Abstract: A suspending arm combined to a screen supporting frame comprises an upper supporting arm; a lower supporting arm; a supporting seat joint having a first adaptor unit and a first pivot unit; the first pivot unit being pivoted to the upper supporting arm and lower supporting arm; a screen joint including a second adaptor unit and a second pivot unit; the second pivot unit being pivoted to the upper supporting arm and lower supporting arm; one end of the connecting block being pivoted into the screen joint; an air pressure; one end of an air pressure bar being pivoted to the lower supporting arm and another end of air pressure bar being pivoted to the connecting block; a fine adjusting unit including a screw and a positioning block; the screw passing through the positioning block and being then screwed to the connecting block.

Abstract: A mounting system for mounting a display device to a surface, the mounting system adjustable in multiple degrees of freedom to selectively position and orientate the attached device relative to the mounting surface and/or other collocated display devices. According to various embodiments, a surface bracket is configured to attach to a mounting surface and an arm assembly operatively couples the surface bracket with a mount carriage. A mount bracket is movably coupled to the mount carriage and is selectively movable in a plane substantially parallel to the surface. A plurality of device bracket assemblies are coupled to the mount bracket. Each of the device bracket assemblies is selectively movable to translate, pivot and tilt the attached device.

Abstract: In an example embodiment, a mounting structure for mounting a display monitor to a panel. The mounting allows the display monitor to be rotated so that it can be seen from either side of the panel.

Abstract: The present invention is directed to a display mounting apparatus for mounting a flat screen television monitor or the like to a wall. The mounting apparatus provides four degrees of freedom for the flat screen display in lateral translation, tilt, swivel and pan directions. The combination of two two-link arms, counterbalancing torsion springs and friction mechanisms provides for ±20 degrees in the tilt and swivel directions.

Abstract: A display mount includes a wall interface that can be attached on a wall and a display interface that can be attached to a flat panel display. The width of the wall interface can be adjusted to accommodate flat panel display of different sizes. The display interface can be positioned on the mounting interface and adjusted to achieve a desired viewing angle of flat panel display. The display mount enables the flat panel display to be self balancing at any point along the tilting travel of the display and avoids contact between the wall and the display when the display is tilted.

Abstract: A device and method for securing a bow while hunting is provided. The device generally includes a base, a support arm rotatably mounted to the base, a connecting arm connected to the support arm, and a retaining arm rotatably connected to the connecting arm and mounted for rotation between an open position and a closed position to secure the limb of the bow. The support arm acts as a lever arm wherein the weight of the bow causes the connecting arm to move and the retaining arm to rotate from an open position to a closed position to secure the limb of the bow.

Abstract: A collapsible cable management arm is foldable with a plurality of heat dissipation apertures. The collapsible cable management arm includes a plurality of racks pivotally connected together which gives a zigzag chain structure being retractable. The rack is formed by a primary and a secondary plate. The secondary plate resembles the size and shape of the primary plate. The secondary plate slides into the tray-like primary plate to form the individual rack with hollow compartment there-between. The thickness of the rack arises from a primary positioning portion of the primary plate. The hollow compartment is further divided into connection and cable compartments by at least one pair of primary and secondary partitions.

Abstract: An apparatus for supporting medical devices, in particular operation theatre lamps, on the ceiling of an operation theatre uses a vertical pillar 8 at which bearing heads 3 are selectively mounted. Cantilevers of different lengths may be secured at one bearing head 3.

Abstract: An adjustable holding apparatus for an endoscope or other medical device having a proximal end and a distal end, the adjustable holding apparatus having a device for holding an endoscope or other medical device that includes a number of arm segments between the proximal end and the distal end, a number of lockable joints that each connect two of the number of arm segments with one another in jointed fashion, and a compensation device for at least partial compensation of the weight impact of the holding apparatus in a pivoting or sliding of at least one arm segment in the vertical direction.

Abstract: A device mount for affixing a device to a surface such as a wall. The device mount has a surface bracket, an articulation mechanism, and a device mount plate. In various embodiments, the device mount further includes a tilt assembly. The surface mount bracket includes an upper surface bracket, a lower surface bracket and a vertical support positioned there between and connected to the lower all bracket and the upper surface bracket. The articulation mechanism has an inner articulating arm pivotally connected to the surface mount bracket and an outer articulating arm is rotatably connected to the inner articulating arm such that it maybe disposed substantially within a void of the inner articulating arm. The tilt assembly is connected to the outer articulating arm and pivotally connected to the device mount plate that is adapted to have a device mounted thereto, such that the device mount plate is selectively tiltable.

Abstract: A plate carrier for mounting at the upper end of the upper element of a central pole of a plate hoist device includes at least one longitudinal central body formed by two substantially rectangular plates separated by three longitudinal walls forming two central sheaths and two peripheral grooves. Each central sheath accommodates a generally T-shaped transverse arm which includes a longitudinal median branch slidably mounted in a sheath and a transverse tubular part welded to a free end of the median branch. The transverse tubular part extending substantially in a plane of the central body.

Abstract: A plate carrier for mounting at the upper end of the upper element of the central pole of a “plate hoist” device or the like comprises at least one longitudinal central body having two substantially rectangular plates separated by three longitudinal walls forming at least two central sheaths. Each central sheath accommodates a generally T-shaped transverse arm which includes a longitudinal median branch slidably mounted in a sheath and a transverse tubular part welded to the free end of the median branch. The transverse tubular part extends substantially in the plane of the central body.

Abstract: An exemplary electronic device includes an electronic component, a heat dissipation device, a fixing member and a casing contained the electronic component, the heat dissipation device and the fixing member therein. The heat dissipation device thermally contacts the electronic component. The fixing member includes a main body and an engaging portion extending from the main body. The engaging portion fixes the heat dissipation device to the fixing member. Fasteners extend through the casing and engage the main body of the fixing member to secure the fixing member on the casing.

Abstract: Disclosed is an adjustable holder for devices with a simplified design for accommodating devices of various form factors and shapes. The adjustable holder comprises at least a pair of offset, generally parallel arms that are slidable within corresponding openings of a support in order to adjust the arms and fixedly position the arms at varying distances relative to the support. The adjustable holder further comprises a gripping member coupled to a distal end of each of the arms to grip a device at opposing sides of the device. In some embodiments, the arms are adjustable via a two-part ratcheting mechanism. In yet other embodiments, the gripping members are rotatable to accommodate devices of various geometries. The holder can fit onto a stand or structure to hold a device in a fixed position.

Abstract: A storage device including a body defining at least one receiver and at least one clamping member. The clamping member includes a first position for receiving an accessory for storage and a second position to apply force to secure an accessory to the receiver for storage. A handle actuator may actuate movement of the clamping member. The clamping member may translate from the first position to the second position to apply force to secure an accessory for storage. The clamping member may be held in the secure position by a releasable braking lever.

Abstract: One embodiment provides a counterbalancing arrangement, including: a pin arrangement attached to a monopole; the pin arrangement rotating with respect to the monopole such that roll movement of the monopole imparts yaw movement to the pin arrangement; the pin arrangement having a gimbal; a camera mounting platform having an upper and lower surface; the gimbal connecting to the lower surface of the camera mounting platform; the gimbal having a yaw degree of freedom locked with respect to the camera mounting platform; and a counterbalancing arm attached to the camera mounting platform. Other aspects are described and claimed.

Abstract: A support arm includes a support mechanism, a wall-mounted mechanism, and an arm mechanism. The support mechanism includes a support plate having a first pivot pillar and a first pivot base having a first eccentric rod and sleeving the first pivot pillar. The wall-mounted mechanism includes a wall-mounted plate detachably disposed on a display monitor and having a second pivot pillar and a second pivot base sleeving the second pivot pillar. The arm mechanism includes a casing, an arm body disposed in the casing and having first and second pivot ends, a first spring connected to the arm body and the first eccentric rod, a first shaft passing through the first pivot base and the first pivot end, a second shaft passing through the second pivot base and the second pivot end, and a damping member sleeving the first shaft for increasing a rotating torque of the first shaft.

Abstract: A balancer swivel arm assembly includes an articulated arm configured to be pivotably attached to a work station at a proximal end. A linear slider is slidably mounted on a distal end of the articulated arm. A spring balancer is mounted on the distal end of the articulated arm and is coupled to the linear slider. The spring balancer is configured to support the linear slider and a tool mounted to the linear slider through a linear range of motion along an axis.

Abstract: A road finishing machine includes a control panel that can be selectively swiveled about a first swivel axis and a second swivel axis, where one operational control each is provided for the first and the second swivel axes for separately unlocking and/or locking a swiveling capacity around the respective swivel axis. One counter surface is fixed to the control panel for each of the operational controls. The swivel axes can be unlocked by pulling the respective operational control in the direction of the respective counter surface, and the control panel can be swiveled into the same direction.

Abstract: A musical instrument stand includes a frame unit, and at least one support unit. The frame unit includes two side modules, a top bar mounted between the side modules, and a bottom bar mounted between the side modules. The support unit includes a supporting seat for supporting a musical instrument, and a mounting sleeve connected with the supporting seat and rotatably mounted on the bottom bar of the frame unit. Thus, the support unit is pivotally mounted on the frame unit, so that a user only needs to place the musical instrument on the support unit and to push the musical instrument toward the top bar of the frame unit, so as to pivot the support unit and to support the musical instrument between the top bar of the frame unit and the supporting seat of the support unit.

Abstract: A knuckle assembly for mounting an electrical device includes a rotatable knuckle mount, an articulated knuckle and an electrical device mount. Two knuckle elements forming the articulated knuckle each include an open cavity, which together form a closed cavity. One of the knuckle elements is pivotally attached to the rotatable knuckle mount and the other includes the electrical device mount. A grommet is positioned in the closed cavity; and a fastener engages the knuckle elements and extends through the grommet. The grommet includes spherical or spheroidal segments complementary to the inner surfaces of the closed cavity and in interfering fit when assembled. The grommet is in non-rotational engagement with one of the knuckle elements. Wires extend through the grommet adjacent a central through hole. A fastener extending through the central through hole draws the knuckle elements together to fix the grommet and seal the assembly.

Abstract: Provided is a display apparatus. A stand type of the display apparatus may be converted into a tilt type or a flip type as necessary.

Abstract: A supporting apparatus for a display device is provided. The supporting apparatus may include a stationary unit coupled to an installation site, a device supporting unit that supports the display device, a connection unit that connects the stationary unit to the device supporting unit and that guides motion of the device supporting unit, and a tilting frictional unit interposed between the connection unit and the device supporting unit to guide a tilting motion of the device supporting unit. The tilting frictional unit may include a first arc member fixed to the connection unit and a second arc member fixed to the device supporting unit. The first and second arc members contact each other to generate frictional force.

Abstract: Embodiments of organizers for point-of-sale systems are disclosed. In one embodiment, an organizer includes a planar surface, a mounting bracket, a pole, and an adjustable arm. The pole illustratively fits within apertures in the planar surface and the mounting bracket, and the adjustable arm is connected to the pole and to a monitor mounting plate. In another embodiment, an organizer includes a surface, a mounting bracket, and a monitor support. The surface is configured to be positioned above a cash drawer and is held in place utilizing a front lip and side lips. The mounting bracket is configured to be positioned below the surface and behind the cash drawer. The monitor support passes through apertures in the surface and the mounting bracket, and is configured to position a monitor relative to the cash drawer.

Abstract: The attachment device has a fixing member fixed to an attachment surface, first and second operating parts are configured to be manipulated from one side in the first direction parallel to the attachment surface, a first member fixed movably in the first direction relative to the fixing member, the first member being configured to move the display device in the first direction relative to the fixing member based on the operation amount of the first operating part, and a second member fixed rotatably relative to the first member, the second member being rotated based on the operation amount of the second operating part and being configured to move the display device in the second direction relative to the fixing member.

Abstract: A support apparatus for suspending a display includes two suspenders and two repositioning units. Each suspender includes a connection member, a joint member, and two parallel arms extending between and pivoted to the connection member and the joint member. Each repositioning unit is connected between a corresponding arm and a corresponding one of the connection member and the joint member, and includes a variable-length cylinder. One of the repositioning units further includes a linking rod having opposite ends connected pivotally and respectively to a corresponding variable-length cylinder and a corresponding one of the connection member and the joint member of a respective suspender.

Abstract: A support system with a locking mechanism for positioning and securing electronic equipment. The support system includes a base, a riser coupled to the base, a support coupled to the riser and a locking mechanism positioned at a distal end of the riser. The locking mechanism includes a first block, a second block and a fastener. The first block has a first aperture, a first inclined surface and distal surface including a lip. The second block comprising a second aperture and a second inclined surface, wherein tightening the fastener slides the first block with respect to the second block, such that the first inclined surface wedges against the second inclined surface. Methods of locking a support to a riser using the locking mechanism.

Abstract: A fixing bracket includes a bracket body, at least one connecting rod assembly, and at least one elastic buckling arm. One side of the bracket body has a first pivoting point and a second pivoting point. The at least one connecting rod assembly includes a first rod, a second rod, a third rod. The first rod has a third pivoting point and a fourth pivoting point. The second rod has a first limiting part, a fifth pivoting point, and a sixth pivoting point. The third rod has a second limiting part, a seventh pivoting point, and a eighth pivoting point. The at least one elastic buckling arm is located on the first rod. The connecting rod assembly drives the elastic buckling arm to move between a release position and a fastening position. When located at the fastening position, the first limiting part is against the second limiting part.

Abstract: An apparatus for supporting a tablet includes a case for receiving the tablet. A swivel includes a socket and a ball disposed and retained therein. The ball is selectively rotatable relative to the socket. The ball is coupled to the case and the socket is coupled to a mounting post. The mounting post is releasably fixed to a mounting bar. The mounting bar defines a mounting slot configured to fix the apparatus relative to a structure, such as a microphone stand or the like. The apparatus includes clamping mechanisms to enable a user to selectively fix and release the components of the apparatus such that a user can configure and fix the apparatus to a desired position for interfacing with the tablet, and then lock the apparatus in that desired position.

Abstract: A swivel attachment and/or branch line restraint device with angular versatility and mobility for facilitating connection of installation components to support a pipe or other load relative to a support surface is provided. Advantageously, embodiments of the device provide a plurality of rotational or swivel degrees of freedom, which are substantially independently controllable, for its mating portions, which respectively engage corresponding mating portions of other installation components. The device embodiments can desirably be configured in male-female, male-male or female-female arrangements to enhance device utility and/or versatility, thereby advantageously allowing for use in a myriad of applications and installations, such as construction, utilities and the like, among others, to reliably support loads.

Abstract: A suspending apparatus is used for suspending an electronic device on a surface. The suspending apparatus includes a base fixed on the surface, a suspending assembly assembled to the electronic device and detachably suspended on the base and having a limiting unit, and a locking assembly configured on the suspending assembly and including a locking unit and a moving unit connected to an end of the locking unit. The locking unit leans upon the limiting unit. In an unlocking process, the moving unit is forced to move along a first path and drives the locking unit. The locking unit unlocks the base with rotating along a second path and moving along a third path while being restricted by the limiting unit, wherein the first and the third paths have an included angle. In a locking process, the locking unit rotates along the second path to lock the base.

Abstract: A multi-joint fixture including a proximal base unit, one or more arms serially connected by electromagnetically lockable ball joints, and a distal hub. The ball joints unlock when not powered. A centering mechanism biases the ball joints toward a neutral position. A control system activates the electromagnetic brake with a high-then-low voltage profile. A headpiece attaches to the hub and holds a drape that covers the fixture. A connector connects a surgical device to the headpiece. A switch on the hub can be actuated via actuators on the headpiece or connector.

Abstract: The present invention relates to a screen supporter comprising an upper support used for fastening a screen, a base and a support arm. The support arm is pivoted with the upper support through an upper rotation shaft, and pivoted with a torque device on the base through a lower rotation shaft. When the screen and support arm are rotated for lowering the height and folded, the support arm drives a lower core shaft, the lower core shaft drives a cam of the torque device to rotate for changing the position of a contact part which compresses an elastic unit, so a proper supporting torque is generated for working with the downward-pressing torque generated by the screen at different positions thereby fully supporting the screen, and a greater downward-pressing force doesn't required to be applied for lowering the height and folding the screen, thereby saving the required force for operation.

Abstract: A shaft assembly that has a flexible shaft and a series of alternating rigid beads around the flexible shaft that ensure the shaft is kept rigid while in any position when the shaft is locked. The flexible shaft having a proximal end that is operatively coupled to the handle assembly and a distal end that operatively coupled to the gripping assembly. The shaft assembly also has a rigid element that can be placed in a first position where the rigid element supports the shaft in a manner where the shaft cannot be bent, and in a second position where the shaft can be bent. The series of alternating beads is made up of an alternating series of 2 types of beads.

Abstract: A display fixture includes a fixed component including a product receiving portion and an elongated spine portion, a first adjustable component insertably engaged with the elongated spine portion and including a product receiving portion and an adjustment portion, a second adjustable component insertably engaged with the elongated spine portion and including a product receiving portion and an adjustment portion, a third adjustable component insertably engaged with the elongated spine portion and including a product receiving portion and an adjustment portion. The first adjustable component operates to slidably adjust a distance between the product receiving portion of the fixed component and the product receiving portion of the first adjustable component, while the second adjustable component and the third adjustable component operate to slidably adjust a distance between the product receiving portion of the second adjustable component and the product receiving portion of the third adjustable component.

Abstract: The present invention is directed to a ladder apparatus capable of being mounted to a vehicle. The ladder apparatus generally comprises a mounting support, a main ladder support for receiving an extension ladder, and a torsion support. The mounting support, the main ladder support and the torsion support are pivotally connected so that the apparatus can be raised from a retracted home position to an extended position. When the apparatus is in the extended position it can be set to a desired height and/or rotational position.

Abstract: An adjustable display mounting bracket assembly includes a mounting bracket, a linkage unit, and a fixing plate. The mounting bracket includes a main body, at least one first connecting member, at least one second connecting member, and a support body. The first and second connecting members are pivotally connected to the main body and the support body. The second connecting member can slide relative to the main body for adjusting the mounting bracket. The linkage unit is pivotally connected to the mounting bracket on one end and the fixing plate on opposite end. The linkage unit allows the distance between the mounting bracket and the fixing plate to be adjustable.

Abstract: A luggage connector that may be used with a baby stroller or wheelchair to transport rolling luggage is disclosed. In a particular embodiment, the connector includes a first arm and a second arm. Clamps are disposed at a distal end of each arm. The clamps are used to secure the connector to a handle of luggage and a portion of a frame such as a stroller or wheelchair frame. Each arm is adapted to rotate about a central axis so that each respective clamp may be rotated and positioned appropriately to secure the connector to the frame. In addition, a rotating hinge is provided to adjust to a desired angle between the two arms to accommodate the connector being secured to the frame and rolling luggage.

Abstract: A support mechanism (16) supports a first object (12) relative to a second object (14), in which the relative positioning is able to be changed in at least two dimensions, and preferably in three dimensions. The support mechanism (16) comprises a first fixing member (20) for fixing to the first object (12) and a second fixing member (22) for fixing to the second object (14). The support mechanism (10 also comprises a first movement mechanism (30,32, 34) which allows movement of a connection point (24) in a first direction relative to the first fixing member (20 and supports the connection point (24) relative to the first fixing member (20). The first direction may be fixed or it may be variable within a first plane. The first plane may be fixed or variable relative to the first fixing member.

Abstract: A camera and accessories clamping mount that includes an assembly of ball and socket members rotatably and moveably interconnectable having an anterior end and a posterior end, a top connector disposed atop the anterior end and a bottom connector disposed on the posterior end, wherein the bottom connector is releasably attachable to a clamp, said clamp attachable to an extant surface, and an extant camera, or other accessory device having a ¼-20? female thread mount, is releasably attachable to the top connector, whereby said camera or other accessory device is supportable and positionable through a range of positions by means of the assembly of ball and socket members.

Abstract: A universal mounting bracket for outboard marine equipment is provided. The universal mounting bracket includes a first member mounted to one end of an arm, and a second member mounted to the other end of the arm. The first and second members mate with the arm to define respective first and second adjustment axes. The arm is adjustable relative to the first member about the first axis. The second member is adjustable relative to the arm about the second axis. Adjustment about the first and second axes allows a user to govern the distance of marine equipment mounted to the second coupling relative to a watercraft.

Abstract: A support apparatus for suspending a display includes two suspenders and two repositioning units. Each suspender includes a connection member, a joint member, and two parallel arms extending between and pivoted to the connection member and the joint member. Each repositioning unit is connected between a corresponding arm and a corresponding one of the connection member and the joint member, and includes a variable-length cylinder. One of the repositioning units further includes a linking rod having opposite ends connected pivotally and respectively to a corresponding variable-length cylinder and a corresponding one of the connection member and the joint member of a respective suspender.

Abstract: An equipment transfer device is provided that is transferable from one support to another support. The transport device is formed as a housing that has two spaced apart, generally parallel recesses, which form docking cups that are open to the bottom. Each docking cup is configured to receive a docking cone that is supported on a structure and is capable of moving in generally a vertical direction into engagement or out of engagement with their respective docking cups. A support post is also supported by the housing and protrudes from the upper end thereof as a base to which an equipment support structure is attached. In this manner the transfer device can be transferred from one docking cone to another with minimal handling and virtually no possibility of dislodgement.

Abstract: A user input device support apparatus is provided for supporting right or left handed users of a computer keyboard and mouse. The user input support apparatus includes a base configured to couple to a mobile or fixed mounting system. The keyboard support further includes a tray configured for supporting a user input device, such as a computer keyboard. Further, the tray includes a lip, wherein the lip is configured to at least partially engage the base. Here, the tray is further configured to slide with respect to the base, thereby accommodating right or left-handed users of the keyboard and a mouse.

Abstract: Described herein is a method and system for gimbaled mounting of satellite dishes. The gimbaled mount for satellite systems overcomes some of the most common negative events affecting satellite communications. The system is a cost effective solution that amortizes the cost of the additional equipment to well over the customary three to five years for satellite use and extends its working life expectancy to 20 years or more. Utilization of stainless steel rather than normal steel or lighter duty aluminum further extends the mounting systems longevity. The inclusion of an environmental feedback system for both snow and ice damage, wind damage, and earthquake damage increases the projected useful life of the mounting system.

Abstract: A device mount for affixing a device to a surface such as a wall. The device mount has a surface bracket, an articulation mechanism, and a device mount plate. In various embodiments, the device mount further includes a tilt assembly. The surface mount bracket includes an upper surface bracket, a lower surface bracket and a vertical support positioned there between and connected to the lower all bracket and the upper surface bracket. The articulation mechanism has an inner articulating arm pivotally connected to the surface mount bracket and an outer articulating arm is rotatably connected to the inner articulating arm such that it maybe disposed substantially within a void of the inner articulating arm. The tilt assembly is connected to the outer articulating arm and pivotally connected to the device mount plate that is adapted to have a device mounted thereto, such that the device mount plate is selectively tiltable.

Abstract: Some embodiments provide a pivot mechanism and/or system that includes a support member defining a cavity and an extension member at least partially located within the cavity. In some cases one or more inner surfaces of the cavity can provide one or more pivots defining multiple pivot axes about which the extension member is generally pivotable through corresponding pivot ranges. The extent of the pivot ranges can be defined by the cavity within the support member. In some cases cooperating clamp members engage the extension member and the support member to retain the extension member within the cavity. The clamp members may also include sliding surfaces that slidingly engage with the support member to provide frictional resistance to pivoting movement of the extension member. Electronic display pivoting and positioning systems are also provided as are methods for positioning and pivoting electronic displays.

Abstract: A suspending arm comprises a multifunction head provided with a main transversal slide able to receive the engagement of a secondary slide of an electrical appliance, and a main electrical plug coupled with actuation means arranged so as to move the plug longitudinally between a retracted position in which it is retracted and an advanced position in which it protrudes so that it can be engaged with a secondary electrical plug of the electrical appliance, and thus ensure the mechanical and electrical connection between the multifunction head and the electrical appliance. An equipment for an operating room comprises a suspending arm supporting an electrical appliance comprising a secondary slide and a secondary electrical plug.

Abstract: An adjustable-position load supporting arm (4) comprises a framework having the shape of a deformable parallelogram one free end (5) of which is able to support a load and a jack (12) able to deform the deformable parallelogram, the jack (12) being of the adjustable-pressure type so that the pressure inside the jack (12) is adjustable according to the weight of said load supported by the supporting arm (4). It comprises, at the free end (5), a connecting piece (6) able to support said load and has, in a first configuration, an axis of orientation (A) that is fixed with respect to said fixed link (9a) and, in a second configuration, an axis of orientation (B) that is variable with respect to said fixed link (9a) when said supporting arm (4) shifts position.

Abstract: A chassis module for fixing electronic devices includes a fixing chassis unit and a first movable chassis unit. The fixing chassis unit has a fixing chassis body and a first fixing retaining structure disposed on a first lateral wall of the fixing chassis body. The first movable chassis unit is detachably disposed in the fixing chassis body. The first movable chassis unit has a first movable chassis body, a first movable retaining structure disposed on a first lateral wall of the first movable chassis body and mated with the first fixing retaining structure, and at least one support element bent downwardly and extended from one lateral wall of the first movable chassis body. Therefore, after the first movable chassis unit is assembled in the fixing chassis unit, the support element provides support function for the first movable chassis unit to prevent the first movable chassis unit from inclining or collapsing.