CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application No. 60/811,265, filed Jun. 6, 2006, the entirety of which is hereby incorporated by reference herein.
BACKGROUND OF THE INVENTION 1. Field of the Invention
The present inventions relate to slide assemblies, and more particularly, to a slide assembly for a rack structure that houses servers or other computer hardware components.
2. Description of the Related Art
Computer servers for computer systems are often mounted in rack structures for convenience and to conserve floor space. Typically, several computer servers are spaced vertically and mounted in each rack structure. To facilitate access to the individual servers for maintenance, repairs, service and/or upgrades, each server is typically mounted on a pair of slide assemblies to allow the server to slide into and out of the rack structure.
Typical slide assemblies comprise two or more telescoping slide segments. An outer or stationary slide segment is mounted to a frame of the rack structure, and an inner or load-carrying slide segment is mounted to the server. The stationary slide segment is usually C-shaped and defines a channel in which the inner slide segment is slidable to extend or retract the slide assembly. A ball-bearing assembly may be positioned within the channel, between the inner and outer slide segments, to facilitate sliding movement of the inner slide segment with respect to the outer slide segment. In other arrangements, direct contact between the outer slide segment and the inner slide segment may occur, which is often referred to as a solid-bearing slide assembly.
Many slide assemblies additionally include an intermediate slide segment that interconnects the stationary slide segment and the load-carrying slide segment and allows a length of extension greater than the length of any individual segment, thus allowing a rack-mounted server to extend beyond the confines of the rack structure for increased access. Many slide assemblies further contain a lock-out mechanism to maintain the position of the server computer once the slide assembly is fully extended. The lock-out feature conveniently allows the slide assembly to remain securely extended while performing work on the computer.
SUMMARY In some embodiments, the slide assembly comprises a slide segment which is configured to receive one or more rollers attached to a chassis or other surface. Once placed within the channel or other closure feature provided by the slide segment, the rollers can advantageously move relative to the slide segment. In some embodiments, this can allow the chassis or other components comprising one or more rollers to be moved (e.g., slid, rotate, etc.) relative to the slide assembly. In some embodiments, the slide assembly further comprises a second slide segment which is configured to move relative to the first slide segment. In some embodiments, the first slide segment is slidably positioned within the second slide segment. In yet other embodiments, the slide assembly can comprise one or more additional slide segments. In still other embodiments, the slide assembly can comprises one or more lockarms to prevent the slide segments from detaching from each other and/or to allow the slide assembly to be selectively locked into or unlocked from one or more desired locations.
In one embodiment, a slide assembly comprises a first slide segment defining a first channel and one or more mounts configured to be secured to a chassis. The first channel is configured to slidably receive the mount. In some arrangements, the mount comprises a roller. In other embodiments, the mount is configured to rotate about a center axis when secured to a chassis. In yet another embodiment, the roller is manufactured of nylon. In still another embodiment, the slide assembly further comprises a second slide segment defining a second channel such that the first slide segment is movable within said second channel from a retracted position to an extended position relative to said second slide segment. In some embodiments, the slide assembly additionally comprises one or more ball bearings situated between the first and second slide segments.
In another embodiment, a slide assembly system comprises a first slide segment defining a first channel, a chassis defining a surface for receiving a mount and one or more mounts attached to the surface of the chassis. The first channel is configured to slidably receive the mounts to at least partially support the chassis. In other embodiments, the mount comprises a roller. In yet another arrangement, the slide assembly system further comprises a second slide segment defining a second channel such that the first slide segment is movable within said second channel from a retracted position to an extended position relative to said second slide segment. In still other embodiments, the slide assembly system further comprises one or more ball bearings situated between the first and second slide segments.
In one embodiment, the chassis further comprises at least one locking member, which is configured to statically retain the position of the chassis relative to the first slide member. In another arrangement, the locking member comprises a release member that is configured to disengage the locking member to permit the chassis to move relative to the first slide member. In other embodiments, the slide assembly further comprises one or more mounting brackets that are slidably connected to the second slide segment. The mounting bracket is configured to be at least partially secured within a mounting structure. In yet another arrangement, the mounting structure comprises a server cabinet. In still other embodiments, the mount is attached to the chassis using a fastener.
In one embodiment, a chassis for slidable placement within a structure comprises a surface configured to receive at least one mount and at least one mount secured to that surface. The mount is configured for placement within a member defining a channel. In another embodiment, the mount comprises a roller. In some arrangements, the surface is substantially planar. In other embodiments, the mount is attached to the surface using a fastener. In still another embodiment, the mount is configured to rotate about a center axis when secured to the chassis.
One aspect of the present invention includes separate mounts that attach to a chassis. In some embodiments, the mounts comprise rollers that attach to one or more side surfaces of the chassis. In one arrangement, the chassis has a generally flat side wall, to which one or more mounts are attached. The separate mounts can be attached to a variety of chassis structures, thereby enhancing the flexibility of a slide assembly design. Embodiments of slide assemblies that utilize rollers and/or other mounts directly on a chassis sidewall eliminate the need for an inner slide channel. This increases the available space in the enclosure for items that improve the overall computing capability of a system, including computing power, server heat dissipation equipment and the like.
In addition, the use of removable rollers or other mounts facilitates the warehousing, packaging and transportation of the chassis, as the need to attach slide segments to or form slide segments from the chassis wall is eliminated. For example, the chassis can be boxed and shipped in their original containers. In addition, the likelihood of damaging a slide segment attached to or formed from the chassis wall is reduced. The warehousing, transportation and general handling of the slide assembly are also improved, as the use of mounts replaces a slide segment from the slide assembly design. The relatively small size of the rollers or other mounts, which can be easily attached and removed from the chassis, further facilitate with the storage and handling of the slide assemblies.
BRIEF DESCRIPTION OF THE DRAWINGS These and other features, aspects and advantages of the present devices and methods are described in detail below with reference to drawings of certain preferred embodiments, which are intended to illustrate, but not to limit, the present inventions. The drawings contain twenty-five (25) figures. It is to be understood that the attached drawings are for the purpose of illustrating concepts of the present inventions and may not be to scale.
FIG. 1A is a perspective view of a slide assembly according to one embodiment;
FIG. 1B is a different perspective view of the slide assembly of FIG. 1A;
FIG. 2 is a perspective view of a chassis comprising rollers and lockarm members according to one embodiment;
FIG. 3 is a perspective view of a chassis slidably connected to a slide assembly according to one embodiment;
FIG. 4 is a schematic of a server cabinet or other enclosure comprising two of the slide assemblies of FIG. 1A to cooperatively support a chassis;
FIG. 5 is a perspective view of two slide segments of the slide assembly of FIG. 1A separated from one another;
FIGS. 6A-6C are schematic views of a slide assembly, illustrating one embodiment of a sequence of extension of the chassis and the individual segments of the slide assembly;
FIG. 7A is a cross-sectional view of the slide assembly of FIG. 1A, taken along line 7A-7A;
FIG. 7B is the cross-sectional view of FIG. 7A, with a roller positioned within the channel of the inner slide segment;
FIG. 8A is a perspective view of a roller configured to be received within a slide assembly segment according to one embodiment;
FIG. 8B is a top view of the roller of FIG. 8A;
FIG. 8C is a side view of the roller of FIG. 8B;
FIG. 8D is a perspective view of a screw configured to secure a roller to a chassis;
FIG. 9 is a perspective view of a chassis slidably connected to a slide assembly and comprising two lockarm members;
FIG. 10A is a perspective view of one of the lockarm members of FIG. 9;
FIG. 10B is a top view of the lockarm member of FIG. 10A;
FIG. 10C is a cross-sectional view of the lockarm member of FIG. 10B;
FIG. 11 is a perspective view of the front mounting bracket of FIG. 1A;
FIG. 12 is a perspective view of the rear mounting bracket of FIG. 1A;
FIG. 13 is a perspective view of a slide assembly comprising front and rear mounting brackets in relation to a rack structure;
FIG. 14A is a perspective view of a slide assembly configured for attachment to one or more rails of an enclosure;
FIG. 14B is a detailed perspective view of the slide assembly of FIG. 14A; and
FIG. 15 is a perspective view of a locking member configured to attach to an enclosure rail and a mounting bracket.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference to Prior Applications
Certain embodiments of a slide assembly are described and illustrated herein. With reference to FIG. 1A, the illustrated slide assembly 12 can be similar to the slide assemblies taught in U.S. patent application Ser. No. 10/254,826, entitled FRONT RELEASE FOR A SLIDE ASSEMBLY, filed on Sep. 25, 2002, now U.S. Pat. No. 6,883,885, U.S. patent application Ser. No. 10/872,969, entitled FRONT-RELEASE LOCK ARRANGEMENT FOR SLIDE ASSEMBLY, filed on Jun. 21, 2004, and U.S. patent application Ser. No. 10/873,418, entitled SPLIT LOCK ARM FOR THREE-PIECE SLIDE ASSEMBLY, filed on Jun. 21, 2004. The above-mentioned patent applications are hereby incorporated by reference in their entirety herein and made a part of this specification.
Rollers Attached to Chassis
The slide assemblies and related devices, systems and methods disclosed herein may be used to support various components in a cabinet, enclosure, rack structure and/or the like. According to some embodiments, the slide assemblies are configured to increase available space within such enclosures while still maintaining the desired functionality. In some embodiments, the increased space around the sides of the cabinet or other enclosure advantageously allows more room for items to be stored thereon, such as, for example, electronics, cooling apparatuses and/or the like. It will be appreciated that the slide assembly and roller embodiments disclosed herein can be used on storage structures other than server cabinets and the like.
In some embodiments, the slide assembly comprises a slide segment which is configured to receive one or more rollers or mounts attached to a chassis or other surface. Once placed within the channel or other closure feature provided by the slide segment, the rollers can advantageously move relative to the slide segment. In some embodiments, this can allow the chassis or other components comprising one or more rollers to be moved (e.g., slid, rotated, etc.) relative to the slide assembly. In some embodiments, the slide assembly further comprises a second slide segment which is configured to move relative to the first slide segment. In some embodiments, the first slide segment is slidably positioned within the second slide segment. In yet other embodiments, the slide assembly can comprise one or more additional slide segments. In still other embodiments, the slide assembly can comprises one or more lockarms to prevent the slide segments from detaching from each other and/or to allow the slide assembly to be selectively locked into or unlocked from one or more desired locations. The terms “roller” and “mount” may be used interchangeably herein.
With reference to the embodiments illustrated in FIGS. 1A and 1B, the slide assembly 12 can comprise a first or inner slide segment 16 and a second or outer slide segment 20. As illustrated in FIGS. 1A and 1B, and detailed in FIGS. 11 and 12, the slide assembly 12 can also include a rear mounting bracket 24 and/or a front mounting bracket 28. In other embodiments, a slide assembly can have more or fewer components (e.g., mounting brackets, segments, etc.) as required or desired.
With continued reference to the embodiment in FIGS. 1A and 1B, the inner slide segment 16 can be generally adapted to receive two or more rollers or similar members connected to a chassis, drawer or other load, such as, for example, a server computer. The outer slide segment 20 can be generally adapted for mounting to a stationary structure, such as, for example, an outer case, cabinet, enclosure, rack structure and/or the like, either directly or through the use of mounting brackets 24, 28. As used herein, the term “stationary structure” is a broad term, and is used in accordance with its ordinary meaning and may include, without limitation any apparatus, device or system that is used to store or otherwise house items. The terms “stationary structure,” “case,” “cabinet,” “enclosure,” “closet” and “rack structure” may be used interchangeably herein.
In FIG. 2, a chassis 10 or similar device or structure can include rollers 30 distributed on a first side surface. In the illustrated embodiment, the chassis 10 comprises a total of six rollers 30 on each side. However, it will be appreciated that in other embodiments, a chassis 10 or similar device can have fewer or more than six rollers 30. The rollers 30 can be advantageously aligned along a single longitudinal axis 32 so that they can be easily positioned within a channel portion of the inner slide segment (FIGS. 1A and 1B). In some embodiments, as will be described in greater detail herein, the rollers 30 are attached to the chassis 10 using a bolted connection that allows the rollers 30 to freely rotate about an axis while being securely fastened to the chassis 10.
Although not illustrated in FIG. 2, the opposite side surface of the chassis 10 can similarly include a plurality of rollers 30 which are configured to fit within a corresponding inner slide segment. In addition, as discussed below, the chassis 10 can also have one or more lockarms members 80, 80A secured on its side surfaces to immobilize the chassis relative to the slide assembly 12 and/or to prevent the chassis 10 from accidentally sliding off the adjoining inner slide segments 16.
In the embodiment depicted in FIG. 3, rollers 30 positioned along the side of the chassis 10 have been received by the channel portion of the adjacent inner slide segment 16 of the slide assembly 12. A similar interface between rollers and a slide assembly can advantageously exist on the opposite side of the chassis 10. Consequently, the chassis 10 can slide relative to the adjacent inner slide segments 16 within a particular range of motion.
FIG. 4 illustrates an exemplary use environment wherein the chassis 10 of a server computer or the like is supported by a pair of slide assemblies 12. In the illustrated embodiment, each chassis 10 is supported in a server rack 14 or similar structure by a pair of slide assemblies 12, one on either side of the chassis 10, to allow the chassis 10 to selectively slide in and out of the server rack structure 14. Each slide assembly 12 can include an outer slide segment 20 and an inner slide segment 16. In addition, the sides of the chassis 10 can be provided with a plurality of rollers 30 that are configured to be slidably received by the corresponding inner slide segment 16. In other embodiments, however, the chassis 10 may be supported by one slide assembly 12, such as, for example, a slide assembly centered below the chassis 10. This could allow the chassis 10 to selectively slide in an out of the server rack structure. Thus, the slide assembly 12 may be mounted in a vertical orientation, a horizontal orientation and/or any other type of orientation. As discussed, it will be appreciated that the various embodiments of the slide assembly discussed and illustrated herein can be used is storage structures other than server cabinets and the like.
According to some embodiments, the two-segment structure of the slide assembly 12 and the plurality of rollers 30 attached to the chassis 10 advantageously permit the entire chassis 10 to be extended beyond the confines of the server rack 14. Such a feature can be particularly helpful in providing a secure position in which to perform maintenance, repairs, servicing and/or other activities on the chassis 10 or components contained thereon. However, it will be appreciated that the slide assembly 12 can be used in operating environments which are different that the server rack 14 depicted in FIG. 4. For example, the slide assembly 12 and the rollers 30 can be used in storage structures that are not associated with servers or similar components. In some embodiments, such a system can be implemented in other types of storage structures, such as, for example, tool and/or inventory closets, other types of storage trays and/or the like.
Additional applications and environments for such slide assembly systems can include the support of various types of loads of selectively movable trays or other storage structures. In addition, the slide assembly systems can include varying mounting locations. In some embodiments, for example, slide assemblies can be mounted on opposing sides of a chassis 10 or similar structure, on the bottom of a chassis 10 or similar structure, on top of a chassis 10 or similar structure and/or on any other location. Further, other features whether or not disclosed herein, such as, for example, including the front and rear mounting brackets and the use of lockarms positioned directly on the chassis, can be adapted for use in connection with other types of systems or assemblies.
FIG. 5 illustrates an embodiment of an inner slide segment 16 separated from an accompanying outer slide segment 20. As depicted, the slide segments 16, 20 can be approximately the same length. In other embodiments, however, the inner slide segment 16 may be shorter or longer than the outer slide segment 20. In the depicted embodiment, the ends of the outer slide segment 20 are curved, forming a channel-like cross section through which the inner slide segment 16 can be received. The inner slide segment 16 can include a similar channel-like cross section configured to receive one or more rollers positioned on an adjacent surface of a chassis 10. Preferably, the slide segments are preferably manufactured from one or more rigid and/or semi-rigid materials configured to withstand the stresses and forces to which they will be exposed. Non-limiting examples of materials that can be used include cold rolled steel, stainless steel, iron, alloys, other metals, polymeric materials, other synthetic materials and/or the like.
FIGS. 6A-6C schematically illustrate one embodiment of a sequencing arrangement for the extension of a slide assembly 12 relative to a chassis 10 supported thereon. As shown, the inner slide segment 16 can be configured to extend relative to the outer slide segment 20 upon the application of a force F. According to some embodiments, only after the inner slide segment 16 has reached a substantially fully extended state relative to the outer slide segment 20, are the rollers 30 on the chassis 10 permitted to extend relative to the inner slide segment 16. However, in other embodiments, the slide assembly 12 and chassis 10 can be configured to permit the chassis 10 to move relative to the inner slide segment 16 before or at the same time as the inner slide segment 16 moves relative to the outer slide segment 20.
Moreover, the slide mechanism 12 can include one or more locking members to restrict the movement between the outer slide segment 20 and the inner slide segment 16. In addition, as will be described in greater detail below, the chassis 10 can include one or more lockarm members to restrict the movement between the inner slide segment 16 and the chassis 10. FIG. 6C schematically illustrates the chassis 10 in a fully extended state relative to the inner slide segment 16 and the outer slide segment 20. It will be appreciated that the slide assembly 12 may be provided with additional slide segments to further increase the range of motion of the chassis 10 relative to the rack structure 14.
FIG. 7A illustrates a cross-sectional view of the slide assembly 12 of FIG. 1A, taken along line 7A-7A. As shown, the outer slide segment 20 can have a generally C-shaped cross-section which is configured to slidably receive the inner slide segment 16. Likewise, in some embodiments, the inner slide segment 16 also has a generally C-shaped cross-section configured to receive one or more rollers or other members that are attached to the chassis. The slide segments 16, 20 of the slide assembly 12 are sized and shaped to provide the desired spacing between adjacent surfaces. This ensures that the inner slide segment 16 can freely and smoothly slide within the outer slide segment 20 free of binding and other movement difficulties. Further, adjacent surfaces of the slide segments 16, 20 may be advantageously configured to further minimize the effects of friction. For example, the surfaces of the slide segments 16, 20 may be polished or otherwise smoothed. In other embodiments, the slide segments 16, 20 can include one or more low-friction materials, layers, coatings, lubricants and/or the like. To further facilitate the longitudinal sliding movement of the slide assembly segments, one or more bearing assemblies (not shown) may be positioned between the outer slide segment 20 and the inner slide segment 16.
The cross-section of FIG. 7B illustrates the slide assembly of FIG. 7A with a roller 30 positioned within the channel portion of the inner slide segment 16. As shown, the two ends 18 of the inner slide segment 16 define a partially enclosed area 22 into which the rollers 30 may be positioned. In certain embodiments, the inner slide segment 16 and the rollers 30 are sized and shaped to permit the rollers 30 to freely slide relative to the inner slide segment 16. The rollers 30 can be rotatably attached to the chassis so that rollers may turn or rotate within the inner slide segment 16, either in addition to or in lieu of sliding. In the illustrated embodiment, the height of the roller, HR, is greater than the height of the opening, HO, to the partially enclosed area.
FIGS. 8A-8C illustrate one embodiment of a roller 30 configured for attachment to a chassis and slidable placement within an inner slide segment 16. As shown, the roller 30 can have a generally circular cross section with a longitudinal step feature 38 at which the outer diameter of the roller 30 sharply changes. This can create a flange-like portion 34 along one side of the roller 30. As is illustrated in FIG. 7B, such a flange-like portion 34 is particularly well suited for securement within the partially enclosed area 22 of the inner slide segment 16. Consequently, the cross-sectional clearance required in the enclosed area 22 can be decreased thereby resulting in a smaller overall cross-sectional width for the slide assembly 12. In addition, incorporation of a flanged-like portion 34 can advantageously permit reduction of the minimum spacing between the chassis and the adjacent surface of the slide assembly 12.
In other embodiments, the roller 30 may have a more or less intricate shape. Further, the size, features, clearances, dimensions and/or other characteristics of the rollers 30 can vary. In certain embodiments, the rollers 30 are constructed of one or more durable materials that are configured to resist the forces, moments and other stresses to which they will be exposed during the operation of the slide assembly system.
With continued reference to FIGS. 8A-8C, the roller 30 has a center opening 40 through which a fastener (e.g., bolt, screw, pin, etc.) may be passed. In the illustrated embodiment, the flange-like portion 34 of the roller 30 includes a center recessed area 42. Such a recessed area 42 can be shaped, sized and otherwise configured to completely accommodate the head portion of a fastener or similar item that secures the roller 30 to the adjacent surface of the chassis 10. Thus, the exterior surface of the flange-like portion 34, which in some embodiments is configured to slide within the inner slide segment 16, can be generally straight.
In some embodiments, the rollers 30 are attached to the chassis 10 in such a way as to permit the rollers 30 to rotate freely about their center axis. As discussed above, the ability of the rollers 30 to turn or rotate within the inner slide segment 16 can further enhance the longitudinal movement of the chassis 10 relative to the slide assembly 12. In one embodiment, the rollers 30 are configured to rotate as a result of not completely tightening the bolt or other fastener used to connect the rollers 30 to the chassis 10.
Alternatively, a cylindrical fitting or other member can be inserted between the opening 40 of the roller 30 and the fastener that attaches the roller 30 to the chassis 10. When the roller 30 is secured to the chassis 30, the cylindrical fitting, which has a smaller outside diameter that the diameter of the opening 40, can preferably extend from the chassis wall to the recessed area 42 of the roller 30. Consequently, the roller 30 is permitted to freely rotate within the cylindrical fitting as the fastener is prevented from directly engaging the roller 30. Those of skill in the art will appreciate that other methods of rotatably securing the rollers 30 to the chassis can also be used, either in lieu of or in addition to the methods disclosed herein.
FIG. 8D illustrates one embodiment of a screw 44 that is configured to secure a roller (not shown) to the exterior of a chassis or similar surface. As shown, the screw 44 is shaped and sized to fit within the opening 40 (FIGS. 8A-8C) of the roller 30. Thus, in the illustrated embodiment, the screw 44 comprises a stepped portion 48 which corresponds to the flanged shape of the opening 40 within the roller 30. The outside face of the screw can include a recessed area 46 which is configured to receive the working edge of a screwdriver or other tool. Such a tool can facilitate securement of the screw 44 to the chassis or other surface. As discussed, the screw 44 can be configured to secure the roller 30 to a chassis 10 while simultaneously permitting it to freely rotate about the screw 44.
In other embodiments, the rollers 30 can be configured to not rotate at all. For example, the screws, bolts and/or other fasteners used to secure the rollers 30 to the chassis 10 can be configured to forcibly engage the rollers 30 against the chassis wall. Alternatively, other methods of completely and/or partially immobilizing the rollers 30 relative to the chassis 10 may be used. For example, the rollers 30 may be glued, snap fitted, welded, threaded and/or otherwise attached to the chassis 10. In other embodiments, the rollers 30 or similar members can also be molded or otherwise formed directly into the structure of the chassis 10.
As illustrated in FIG. 2, the rollers 30 can be aligned along a single longitudinal axis 32 of the chassis side surface. However, in other embodiments, other general arrangements and/or alignments of the rollers 30 can be used. For instance, the rollers 30 can be positioned along two or more different longitudinal axes. In one such embodiment, the rollers 30 are configured for placement within a single inner slide segment 16, with rollers 30 engaging different portions (e.g., top, bottom, etc.) of such an inner slide segment 16. Alternatively, the rollers 30 can be positioned within different inner slide segments 16, which may be included as part of the same of different slide assembly 12.
In some embodiments, the rollers 30 are manufactured from nylon and/or other polymeric materials. Typically, such synthetic materials are durable and capable of providing relatively smooth surfaces. However, one or more other materials can also be used, either in lieu of or in addition to polymeric materials. For example, the rollers 30 can comprise one or more metals, ceramics, other synthetic materials and/or the like. The quantity, size, thickness, materials/methods of manufacture, spacing and/or other characteristics of the rollers 30 used on a particular chassis 10 can vary. For example, in some embodiments, such characteristics may depend, inter alia, on the dimensions and weight of the chassis 10 and items situated thereon.
To reduce friction, one or more of the surfaces of the rollers 30, especially those which contact adjacent surfaces of the slide assembly 12, can be relatively smooth. One or more lubricants (e.g., grease, oil, synthetic lubricants, etc.) can be optionally applied to the surface of the rollers and/or the inner slide segment 16 to further minimize the effects of friction.
Although the rollers illustrated in the figures and described herein have a generally circular shape, those of skill in the art will appreciate that rollers with one or more other shapes may be otherwise used, including square, rectangular, triangular, elliptical, hexagonal, other polygonal, irregular, etc. In some preferred embodiments, the inner slide segment 16 is configured to receive the rollers regardless of their exact shape, size and other characteristics. In fact, in some embodiments, a single inner slide segment 16 may be configured to accommodate two or more differently shaped rollers.
To further facilitate the sliding movement between a roller 30 and the slide assembly 12, the surfaces of the inner slide segment 16 that may contact the roller 30 can be relatively smooth. For example, in some embodiments, the inner slide segment 16 includes one or more smooth materials, layers, coatings, lubricants and/or the like. In other arrangements, the inner slide segment 16 may include a rail or other similar feature intended to provide a better contact surface for the adjacent rollers. The friction between the rollers 30 and the inner slide segment 16 can also be reduced by minimizing the total contact area between adjoining surfaces. For example, instead of being generally flat, as shown in FIGS. 8A-8C, the outer circumferential surface of the roller 30 may be curvate or pointed.
Lockarms Attached to Chassis
In some embodiments, the chassis 10 can further include one or more lockarm members to prevent the rollers 30 from sliding off the inner slide segment 16. In addition, the lockarm members can be configured to retain the chassis 10 in a stationary position relative to the slide assembly 12. This can advantageously facilitate the performance of maintenance, servicing, repairs and/or other activities when the chassis has been retracted out of the rack structure in which it is housed (e.g., server cabinet). With reference to FIG. 2, two lockarm members 80, 80A are positioned near the center of the chassis sidewall, along the same surface as the rollers 30. In other arrangements, however, fewer or more lockarm members can be provided. Moreover, any suitable orientation, spacing and/or general orientation can be used to distribute the lockarm members along one or more surfaces of a chassis. In certain embodiments, lockarm members are symmetrically provided on both sides of the chassis.
FIGS. 10A-10C illustrate a lockarm member 80 similar to those shown attached to the chassis in FIG. 2. As depicted, the lockarm member 80 comprises a base portion 82 that physically contacts an adjacent chassis surface when the lockarm member 80 is affixed to the chassis. The base portion 82 can include one or more openings 84 through which a fastener may pass to secure the lockarm member 80 to the chassis. However, it will be appreciated that other methods and/or devices for securing the lockarm member 80 to the chassis may also be used, such as, for example, welds, rivets, adhesives, snap fittings, friction fittings, pins and/or the like.
With continued reference to the embodiment illustrated in FIGS. 10A-10C, the lockarm member 80 also includes a resilient portion 86 that extends from and is angled relative to the base portion 82. Further, as illustrated in FIG. 10A, the resilient portion 86 can include an elevated end portion 88 that defines an engagement surface 90 along the edge of the lockarm member 80. In one embodiment, the lockarm member 80 is approximately 55 mm long, 10 mm wide and 0.6 mm thick. The lockarm member 80 can be manufactured from one or more rigid or semi-rigid materials. For example, the lockarm member 80 can comprise stainless steel, other metals, polymeric materials and/or the like. However, it will be appreciated that the shape, size, spacing, orientation, dimensions, materials of construction, resiliency, rigidity and/or other characteristics or properties of the lockarm member 80 can vary in order to accommodate a particular chassis and/or slide assembly. In some embodiments, the lockarm member 80 can be manufactured from non-resilient materials. In such embodiments, the required resiliency in the lockarm member 80 may be furnished by a strategically positioned spring or other biasing member.
With reference to the embodiments illustrated in FIGS. 2 and 9, the lockarm members 80, 80A are oriented so that their elevated end portions 88, 88A face one another. As shown, each lockarm member 80, 80A is attached to the chassis 10 using one or more bolts or other fasteners. The engagement surfaces 90, 90A of the lockarm members 80, 80A are advantageously configured to engage one or more corresponding surfaces of the inner slide segment 16. For example, in the embodiment illustrated in FIG. 9, the engagement surface 90 of a first lockarm member 80 abuts an inner surface of a rectangular slot 50 that is situated near one end of the inner slide segment 16. Likewise, the engagement surface 90A of a second lockarm member 80A can abut the end portion of the inner slide segment 16. Thus, the angle or bend between the base portion 82 and the resilient portion 86 of a lockarm member 80 can be advantageously selected to ensure that the engagement surface 90 contacts a target surface of the adjacent inner slide segment 16. In some embodiments, this angle varies between 0 and 45 degrees. However, in other embodiments, such an angle can be greater that 45 degrees.
With continued reference to the embodiment illustrated in FIG. 9, the chassis 10 is not permitted to move relative to the inner slide member 16. As shown in FIGS. 5 and 9, the slot 50, which can include a generally rectangular shape, is positioned near the end portion of the inner slide segment 16. Such placement of the slot 50 maximizes the distance away from the server cabinet or other rack structure that the chassis 10 can be retracted. Consequently, a user is given additional space for servicing the chassis 10 and/or items supported thereon. In alternative embodiments, the slot 50 can have a non-rectangular shape and/or may be positioned anywhere along the inner slide segment 16, as desired or required by a particular application. Further, a slide segment 16 can include more than one slot 50, providing additional locations along its length for restraining contact between an engagement surface and a slot.
In FIG. 9, the relationship between the lockarm members 80, 80A and the inner slide segment 16 can be achieved by retracting the chassis away from its common position within the rack structure in a direction illustrated by arrow F. In the depicted position, the end portion of the inner slide segment 16 is effectively locked between the lockarm members 80, 80A. The slide segment 16 may be released to permit the chassis 10 to return to its original position within the cabinet by applying a downward force on the lockarm member 80A. In some embodiments, the force is applied to the elevated end portion 88A of the resilient portion 86A. The engagement surface 90A is thus lowered below the corresponding contact surface formed by end of the inner slide segment 16, allowing the lockarm member 80A to be tucked underneath the slide segment 16. Consequently, the chassis 10 can be permitted to move relative to the inner slide segment 16 in a direction indicated by the arrow R.
With continued reference to FIG. 9, as the chassis 10 is continued to be moved towards the rack structure, the other lockarm member 80 will eventually encounter the opposite end 52 of the slot 50. However, given the orientation of the lockarm member 80 in relation to the slot 50, the resilient portion 86 of the lockarm member 80 may be biased underneath the inner slide segment 16. Thus, in some embodiments, lockarm member 80 does not restrict the movement of the chassis 10 relative to the inner slide segment 16 in direction R.
The resilient portion 86A of lockarm member 80A can be preferably positioned slightly higher than the resilient portion 86 of lockarm member 80. Therefore, the resilient portion 86A of lockarm member 80A can be prevented from being resiliently released within the slot 50. Instead, in some embodiments, the top edge of the resilient portion 86A stays underneath the inner slide segment 16 as the lockarm member 80A moves past the slot 50. Alternatively, lockarm member 80A can be configured to permit the release of its resilient portion 86A within the slot 50. However, in such embodiments, the resilient portion 86A of the lockarm member 80A may need to be lowered (e.g., pressed, pulled, etc.) while the chassis 10 is moved in direction R in order to overcome the restrictive contact between the engagement surface 90A and the side surface 52 formed by the slot 50.
In some embodiments, the lockarm members 80, 80A are retained below the inner slide segment 16 within the normal range of motion of the chassis 10 relative to the slide assembly 12. This is often typical for slide assemblies that utilize an inner slide segment 16 having few slots or other openings, such as the one illustrated in FIG. 5. In other embodiments, however, the inner slide segment 12 includes additional slots which may be strategically positioned at different locations along the length of the slide segment 12. Such a configuration can enable the chassis 10 to be selectively locked at various distances relative to the slide assembly 12. Since, in the illustrated embodiments, the lockarm members 80, 80A are resiliently biased towards the inside surface of the inner slide segment 16, one or more friction-reducing measures can be provided. For example, the corresponding contacting surfaces of the inner slide segment 16 and the lockarm members 80, 80A may be polished and/or constructed of low friction materials (e.g., smooth metals, ceramics, synthetic polymers, etc.). Alternatively, one or more low friction coatings, layers, lubricants and/or the like can be used.
In FIG. 9, the chassis 10 can be removed from the inner slide segment 16 and thus, from the entire slide assembly 12, by lowering the resilient portion 86 of lockarm member 80. This can permit the engagement surface 90 to move underneath the inner slide segment 16, allowing a user to pull the chassis 10 away from the slide assembly 12. Likewise, in some embodiments, when inserting the chassis 10 into the cabinet or similar rack structure, the rollers 30 located near the rear portion of the chassis 10 are first inserted within the channel of the inner slide segment 16. The chassis 10 can then be advanced relative to the inner slide segment 16, toward the cabinet, causing lockarm member 80 to move underneath the inner slide segment 16 in the direction of the slot 50. Once the lockarm member 80 moves into the slot 50, the position of the chassis 10 may be locked relative to the inner slide segment 16.
Mounting Brackets
With reference to FIGS. 1A, 1B and 13, the slide assembly 12 can include a rear mounting bracket 24 and/or a front mounting bracket 28 to facilitate the installation of a slide assembly 12 within a server cabinet, other rack structure or any other storage apparatus. As illustrated, the rear mounting bracket 24 and the front mounting bracket 28 can be attached at opposite ends of the outer slide segment 20. Similar to the slide segments 16, 20 of the slide assembly 12, the mounting brackets 24, 28 are preferably constructed from rigid or semi-rigid materials having sufficient strength, durability and other characteristics to withstand the forces, moments and/or other stresses that the slide assembly may encounter. For example, in some embodiments, the mounting brackets comprise cold rolled steel, stainless steel, iron, other metals, metal alloys, composites, polymeric materials, other synthetics and/or the like.
FIG. 11 illustrates one embodiment of a front mounting bracket 28 positioned on an outer slide segment 20. As depicted, the front mounting bracket 28 is secured to the generally flat surface of the outer slide segment 20 using three fasteners 90 (e.g., bolts, screws, rivets, pins, snap connections, etc.). It will be appreciated that fewer or more fasteners may be used. In addition, it will be appreciated that the front mounting bracket 28 may be joined to the adjacent surface of the outer slide segment 20 using one or more other suitable methods or devices, such as, for example, welds, snap fittings, glues or other adhesives, clamps and/or the like. The front mounting bracket 28 can include one or more protrusion members 92 that are configured to engage corresponding openings 102 within the rack structure (FIGS. 13, 14A, 14B). Further, at least one opening 94 can also be provided to securely attach the front mounting bracket 28 to the rack structure or other portion of the storage apparatus.
With continued reference to FIG. 11, two protrusion members 92 and a single opening 94 are positioned on a flange portion 96 of the front mounting bracket 28. As depicted, the flange portion 96 is generally perpendicular to the larger surface of the front mounting bracket 28 to which the outer slide segment 20 is attached. Moreover, the protrusion members 92 and opening 94 are aligned along the same vertical axis. In certain embodiments, the main portion of the front mounting bracket 28 that contacts the outer slide segment 20 is approximately 76 mm wide, 43 mm tall and 1.4 mm thick, and the flange portion 96 is approximately 16 mm wide, 43 mm tall and 1.4 mm thick. Further, the protrusion members 92 are approximately 6 mm in diameter and 11 mm long. Those of skill in the art will recognize that the exact number of protrusion members 92 and openings 94 may vary. In addition, the size, shape, location, spacing, orientation and/or other characteristics of the mounting brackets 24, 28, the protrusion members 92 and openings 94 positioned thereon can be different than illustrated and discussed herein.
FIG. 12 illustrates a rear mounting bracket 24 slidably connected to an outer slide segment 20. As shown, the rear mounting bracket 24 can include one or more slotted openings 110, 112 oriented parallel to one another and the main longitudinal axes of both the rear mounting bracket 24 and slide assemblies 12. Alternatively, the slotted opening can have a different orientation than illustrated and discussed herein.
In the embodiment depicted in FIG. 12, the outer slide segment 20 is secured to the rear mounting bracket 24 by fasteners 120, 122 that are placed through the outer slide segment 20 and the slotted openings 110, 112. The position of the fasteners 120, 122 can be advantageously moved within the slotted openings 110, 112 to adjust the position of the rear mounting bracket 24 relative to the outer slide segment 20. Consequently, the distance between the outer slide segment 20 and the inner slide segment 16 can be selectively varied. Further, it will be appreciated that a sufficient amount of slack can be provided between the fasteners 120, 122 and the slotted openings 110, 112 in order to freely adjust the position of the rear mounting bracket 24 relative to the outer slide segment 20.
In some embodiments, the rear mounting bracket 24 is additionally equipped with a spring 118 and an accompanying slot 114 through which the spring 118 may be stretched. One end of the spring 118 can be connected to the rear mounting bracket 24 and the other end to the outer slide segment 20. In FIG. 12, the spring 118 is configured to exert a constant force on the rear mounting bracket 24 relative to the outer slide segment 20 in a direction indicated by arrow F. Thus, the spring 118 acts to minimize the distance between the front mounting bracket 28 and the rear mounting bracket 24. Alternatively, the spring 118 can be oppositely configured so that it tends to maximize the distance between the front mounting bracket 28 and the rear mounting bracket 24. Further, additional springs and/or other types of biasing members may be used to selectively modify the tension between the outer slide segment 20 and the rear mounting bracket 24. In other embodiments, the front mounting bracket 28 includes similar slotted openings and/or biasing members, either in addition to or lieu of the rear mounting bracket 24.
In some embodiments, as illustrated in FIGS. 1A, 1B and 13, the rear mounting bracket 24 is generally longer than the front mounting bracket 28 secured at the opposite end of the outer slide segment 20. However, those of skill in the art will recognize that the length of the rear mounting bracket 24 can be shorter or substantially the same as that of the front mounting bracket 28. In one embodiment, the portion of the rear mounting bracket 24 that abuts the outer slide segment 20 is approximately 350 mm long, 43 mm tall and 1.4 mm thick. Similar to the front mounting bracket 28, the rear mounting bracket 24 can preferably include a flange portion 96A that is substantially perpendicular to the portion that abuts the outer slide segment 20. Further, one or more protrusion members 92A and openings 94A can be positioned on the flange portion 96A. In some embodiments, the protrusion members 92 on the front mounting bracket 28 face in the opposite direction than the protrusion members 92A on the rear mounting bracket 24.
With reference to the embodiment illustrated in FIG. 13, a slide assembly 12 that is configured to be installed within a server computer cabinet or similar rack structure includes a front mounting bracket 28 and a rear mounting bracket 24. FIG. 13 schematically illustrates surfaces S of the rack structure or other storage apparatus to which the mounting brackets 24, 28 can be attached. In the depicted embodiment, openings 102 in the front portion of the cabinet are sized, shaped and otherwise configured to receive the protrusion members 92 of the front mounting bracket 28. Likewise, openings 102A is the rear portion of the cabinet can be advantageously sized and shaped to receive the protrusion members 92A of the rear mounting bracket 24. In addition, in some embodiments, both the front and rear portions of the rack structure include openings 104, 104A corresponding to openings 94, 94A in the mounting brackets 28, 24.
According to one embodiment of installing the slide assembly 12 within the rack structure, a user first places the protrusion members 92A of the rear mounting bracket 24 within the corresponding openings 102A of the rack structure. The openings 102A may be formed directly into the body of the rack structure or may be included in a separate member (e.g., frame, channel, angle, etc.) that is attached to the structure. Once the protrusion members 92A are within the openings 102A, the rear mounting bracket 24 may be secured to the rack structure by advancing one or more fasteners (e.g., bolts, screws, clips, pins, etc.) through openings 94A in the mounting bracket 24 and corresponding openings 104A in the rack structure. Similarly, the protrusion members 92 of front mounting bracket 28 can then be placed within the corresponding openings 102 located near the front of the rack structure. If a spring 118 biasly is used to connect the outer slide segment 20 to either or both of the mounting brackets 24, 28, as described herein, a tension or compression force may exist between the front mounting bracket 28 and the rear mounting bracket 24. Thus, the user may need to use some force to position the front mounting bracket 28 to the proper location.
Next, the front mounting bracket 28 can be secured to the rack structure by installing one or more fasteners through openings 94 in the front mounting bracket 28 and corresponding openings 104 in the structure.
Alternatively, those of skill in the art will appreciate that the order in which the mounting brackets 24, 28 are secured to the rack structure is not important. Thus, the front mounting bracket 28 can be secured to the cabinet before, after or at the same time the rear mounting bracket 24 is installed. In certain embodiments, both slide assemblies 12 include rear and front mounting brackets 24, 28 to facilitate installation within a cabinet. Further, the installation process described above may be reversed to provide an easy method of removing the slide assemblies 12 from the cabinet.
FIGS. 14A and 14B illustrate another embodiment of an attachment method of slide assemblies 12 to an enclosure or other storage structure. As shown, the server cabinet, enclosure and/or other storage apparatus includes one or more rails 200 to which the slide assemblies 12 can be secured. For clarity, only a single rail 200 is illustrated in FIGS. 14A and 14B. The depicted rail 200 is configured to receive and secure the front mounting bracket 28 of one of the slide assemblies 12. However, it will be appreciated that in some embodiments, the enclosure or other structure comprises two or more rails 200, which are configured to receive other mounting brackets 24, 28 and/or other components of the slide assemblies 12. For example, in one embodiment, the enclosure includes a total of four vertical rails 200, each of which is configured to receive and secure a rear or a front mounting bracket 24, 28.
As illustrated in the detailed perspective view of FIG. 14B, the rail 200 can include a plurality of openings 210. The rail 200 can be constructed of one or more rigid or semi-rigid materials, such as, for example, steel, iron, polymeric materials, fiberglass and/or the like. In the embodiment of FIGS. 14A and 14B, the rail 200 comprises a metal angle. However, in other embodiments, the rail 200 can include any other structural or non-structural member, such as, for example, a beam, a channel, a square or the like.
With continued reference to FIG. 14B, the openings 210 in the rail 200 are sized, spaced and otherwise configured to receive corresponding protrusion members 92, 92A of the front or rear mounting brackets 28, 24 (FIGS. 11 and 12). In the illustrated embodiment, the openings 210, which are generally rectangular, are configured to receive generally circular protrusion members 92, 92A. However, in other embodiments, it will be appreciated that the openings 210 and/or the protrusion members 92, 92A can have a different shape. The plurality of openings 210 in the rail 200 can help a user choose and/or adjust the vertical position of the slide assemblies secured within an enclosure.
Thus, according to the illustrated embodiments, in order to secure a slide assembly within an enclosure, the protrusion members 92, 92A are passed through the openings 210 of the corresponding rail 200. As shown, a bolt 220 can be passed though both the opening 210 in the rail and the corresponding opening 94, 94A (FIGS. 11 and 12) of the front or rear mounting brackets 28, 24, before engaging a nut (e.g., PEM® nut, hex nut, weld nut, other fastener, etc.) on the opposite side of the bracket 28, 24. The nut (not shown) can be separate from or attached to the adjacent bracket 24, 28.
With reference to FIGS. 14B and 15, the mounting brackets 24, 28 can be further secured to the corresponding rail 200 using a latching member 240. In some embodiments, the latching member 240 comprises one or more openings 248 through which a bolt 250, 252 or other fastener may pass. Thus, such bolts 250, 252 or other fasteners can be passed through the openings 248 of the latching members 240 and engage the corresponding protrusion member openings of the mounting brackets 24, 28 (FIGS. 11 and 12). In some embodiments, the protrusion member openings are threaded to help create a secure connection between the bolts 250, 252 and the mounting brackets 24, 28. However, it will be appreciated that the protrusion member openings need not be threaded. For example, a nut or other fastener can be used to secure the bolts 250, 252 in place.
In some embodiments, as illustrated in FIGS. 14B and 15, the latching member 240 comprises an overhang portion 242. The overhang portion can be used to further secure the server or any other components stored within the enclosure. For example, the server (not shown) can comprise a corresponding component or feature that latches or otherwise connects to the latching member 240 using this overhang portion 242. However, it will be appreciated that the latching member 240 can have any other type of latching member, feature or mechanism to secure the server or other components being stored within the enclosure. Such features can also be designed for easy disconnection or unlatchment to permit the server or other component to be unlocked.
Although this invention has been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof. In addition, while a number of variations of the invention have been shown and described in detail, other modifications, which are within the scope of this invention, will be readily apparent to those of skill in the art based upon this disclosure. It is also contemplated that various combinations or subcombinations of the specific features and aspects of the embodiments may be made and still fall within the scope of the invention. Accordingly, it should be understood that various features and aspects of the disclosed embodiments can be combined with or substituted for one another in order to form varying modes of the disclosed invention.
