FLAT PANEL MONITOR SUPPORT ARM
A support arm for components such as flat screen monitors. In one embodiment, the support arm includes rigid arm segment and a flexible arm segment. The flexible arm segment may be mounted adjacent to the supported component. The flexible arm segment includes a plurality of flexible tubes, each having a core surrounding by a filling material and a flexible coiled tube. Preferably, at least one of the flexible tubes is fixed at both ends while at least one of the flexible tubes includes a free floating end that is permitted to move longitudinally with respect to the fixed tube as the flexible arm is moved.
The present invention relates to support arms, and more particularly to an adjustable support arm for components such as flat panel monitors.
Conventional CRT computer monitors suffer in that they are large and relatively heavy. As a result of their weight, conventional CRT monitors are typically placed directly on a desk or other work surface. Although conventional CRT monitors are mounted on support arms in some applications, this option in not practical in many situations. Support arms for conventional CRT monitors are relatively expensive and they must be mounted to a strong and durable mounting structure. Accordingly, conventional CRT monitors often occupy valuable desk space that could be better used for other things.
As a result of these and other problems, there is a steady increase in the use of flat panel monitors as a replacement for conventional CRT computer monitors. Flat panel monitors occupy dramatically less space and are significantly lighter in weight than conventional CRT computer monitors. As a result of their reduced weight, flat panel monitors are also more easily supported above a desk or other work surface by a support arm. Although they are lighter than conventional CRT monitors, flat panel monitors are relatively heavy and still require strong and durable support arms. Conventional support arms typically include large rigid arm segments that are joined by complex durable joints. Although these conventional joints provide a level of adjustability, they are often difficult to operate and provide a limit range of adjustability. With many conventional support arms, the joints must be unlocked to make adjustments to the position of the monitor and then relocked once the monitor is in place. Accordingly, conventional support arms are typically relatively expensive, provide limited range of motion and require significant effort to adjust. As a result, there remains a continuing need for a flat panel monitor support arm that is inexpensive, easy to operate and highly adjustable.
SUMMARY OF THE INVENTIONThe aforementioned problems are overcome by the present invention wherein a support arm for a component, such as a flat panel monitor, is provided with a plurality of flexible support members. The flexible support members are preferably mounted adjacent to one another to cooperatively provide sufficient support for the component. In one embodiment, one end of at least one of the flexible support members is free floating to permit it to move longitudinally with respect to the other flexible support members as the arm is support arm moved.
In one embodiment, the support arm includes two flexible support members, one disposed vertically above the other. The two support members each include a first end that is fixed to a common base at one end and a second end that terminates at a component mount. The component mount is adapted to receive a component, such as a flat panel monitor. The second end of one of the two support members is fixed to the component mount while the second end of the other support member is left free floating within a slide channel. This permits the support members to move longitudinally with respect to one another as the flexible support members are moved.
In one embodiment, each flexible support member includes a spiral-wrapped, flexible steel tube, a solid core disposed coaxially within the flexible tube and a filler material filling the space between the tube and the core. The filler material may be a conventional silicone caulking.
In another embodiment, the support arm includes a rigid lower arm segment and a flexible upper arm segment. By locating the flexible arm segment adjacent to the component, the moment arm applied to the flexible arm segment is reduced. In heavier applications, this can eliminate or dramatically reduce any creep that may occur in the flexible arm segment.
The present invention provides an inexpensive and highly adjustable support arm. The flexible support members provide essentially infinite adjustability without the need to operate the locking and release mechanisms incorporated into conventional rigid joints. The use of a flexible tube with one free-floating end facilitates movement of the flexible arms, maintaining support while making it easier to move the arm through a wider range of motion. The flexible arm segments are inexpensive and easily manufacture from conventional components. The combination of a solid core, coiled steel tube and silicone filling material provide the desired strength, while still permitting easy adjustment of the supported structure. The precise strength of the flexible support members can be easily controlled by varying the characteristics of the various components, for example, by varying the material or diameter of the core. Further, by providing a rigid lower arm segment and a flexible upper arm segment, the present invention is easily adapted for use in supporting heavier objects.
These and other objects, advantages, and features of the invention will be readily understood and appreciated by reference to the detailed description of the preferred embodiment and the drawings.
A flat panel monitor support arm in accordance with a preferred embodiment of the present invention is shown in
In the illustrated embodiment, the base assembly 12 generally includes a clamp 20, a lower swivel mount 22 and an upper swivel mount 24 (See
The upper swivel mount 24 is rotatably mounted to the lower swivel mount 22 to permit the support arm 10 to rotate in through a generally horizontal plane. Referring again to
As noted above, the lower arm segment 14 includes a plurality of flexible tubes 52a-c (See
It is desirable to match the strength (e.g. flexibility or resistance to bending) of the lower arm segment 14 to the weight of the component to be support, such as a flat panel monitor 200. As the force required to bend the lower arm segment 14 increases, so does the effort required to adjust the position of the monitor 200. On the other hand, if the force required to bend the lower arm segment 14 is too low, the support arm 10 may creep or fall under the weight of the monitor 200. With a conventional 15″ flat panel monitor weighing approximately 7 to 9 pounds, the desired balance can be achieved by providing a core 58 of conventional annealed steel or annealed aluminum round stock with a diameter of 0.156 inches, a filler 60 of 100 percent silicone caulking, a casing 62 of conventional five eighth inch outer diameter flexible steel tube and a sleeve 64 of heat-shrink plastic.
Referring again to FIGS. 2A and 3A-B, the support arm 10 includes a coupling 68 that mounts to the free end of the lower arm segment 14. In this embodiment, two of the flexible tubes 52a-b are fixedly secured to the coupling 68, while the third flexible tube 52c is free floating with respect to the coupling 68. More specifically, the coupling 68 defines three lower arm mounting bores 70a-c, which preferably extend parallel to one another and to the central axis of the coupling 68 (See
The upper arm segment 16 of the described embodiment extends from the coupling 68 to support the upper joint assembly 18. In this embodiment, the upper arm segment 16 includes two adjacent segments of rigid tube 84a-b, for example, 0.720 inch diameter steel tube (See FIGS. 2A and 3A-B). The size, shape and configuration of the upper arm segment 16 may vary from application to application depending primarily on the desired strength and aesthetic characteristics. For example, the rigid tube segments 84a-b may be replaced by other rigid materials or by a flexible upper arm segment 16, such as the three flexible tubes 52a-c of the lower arm segment 14.
An upper joint assembly 18 is mounted to the free end of the upper arm segment 16. The upper joint assembly 18 mounts to the flat panel monitor 200 and is adjustable in various directions to control the position of the flat panel monitor 200. As perhaps best shown in
The various components of the support arm 10 are manufactured using conventional techniques and apparatus. In one embodiment, the lower swivel mount 22, upper swivel mount 24, coupling 68, head 78, first joint member 80 and second joint member 82 are machined from nylon (e.g. nylon 616) round stock having a diameter of approximately 2 inches. The nylon may be reinforced, for example, with glass fibers if desired. These components may, however, be manufactured using other conventional techniques and apparatus, such as injection molding or die casting, and using other conventional materials, such as metal, thermoplastic.
To provide a mechanism for routing power cords and other wires, the support arm 10 may includes a plurality of cord clips 170 (See
The present invention is described above in connection with a support arm 10 intended to support a conventional 13-15 inch flat panel monitor. The design and configuration of the support arm can be varied to adapt the support arm to other uses. For example, the strength of the flexible lower arm segment 14 can be increased to support heavier objects or reduced to support lighter objects. Further, the size or material types of the various support arm components can be changed to provide increased or decreased strength as desired. The configuration of the support arm may also be varied, for example, by reversing the position of the lower arm segment and upper arm segment so the flexible arm segment is located adjacent to the joint assembly. In some application, the rigid arm segment may be eliminated all together to provide an arm that is flexible along its entire length. Further, in some applications it may be desirable to vary the number of flexible tubes that are free floating at one end.
To illustrate the adaptability of the present invention, a first alternative embodiment is described in connection with
In this embodiment, the lower arm segment 14′ is rigid and the upper arm segment 16′ is flexible. As perhaps best shown in
The support arm 10′ includes a coupling 68′ interconnecting the lower arm segment 14′ and the upper arm segment 16′. In this embodiment, the coupling 68′ provides a joint that permits pivot movement of the upper arm segment 16′. The coupling 68′ generally includes a lower half 122′ and an upper half 124′. The lower half 122′ defines three lower arm mounting bores 70a-c′ that are fitted over the upper ends of the rigid tubes 86a-c′. The lower half 122′ preferably defines three set screw holes 160a-c′ for securing the coupling to the lower arm segment 14′ by set screws 162a-c′. The lower half 122′ also defines a through bore 126′ for pivotally mounting the lower half 122′ to the upper half 124′. The through bore 126′ is preferably threaded to receive a mounting fastener 128′. To permit pivotal movement in the coupling 68′ the mounting fastener 128′ is tightened only to the point where the desired resistance to pivotal movement is achieved. A jam screw 146′ is threadedly inserted into through bore 126′ to jam-lock the fastener 128′ in place. The upper half 124′ is similar to the lower half 122′, being configured to mount to upper arm segment 16′. The upper half 124′ defines three upper arm mounting bores 72a-c′. The upper half 124′ preferably defines two set screw holes 164a-b′ for securing the coupling to the upper arm segment 16′ by set screws 166a-b′. The upper half 124′ also defines a through bore 130′ for pivotally mounting the lower half 122′ to the upper half 124′. The through bore 130′ is counter-bored to seat the head of fastener 128′. In the illustrated embodiment, the coupling 68′ also includes a plunger assembly for locking the coupling 68′ in one of a variety of positions. The plunger assembly generally includes a plunger pin 136 mounted in the upper half 124′ that interacts with a plurality of spaced locking holes 142 defined in the lower half 122′. The plunger pin 136 is mounted in a through bore 144 defined in the upper half 124′. The plunger pin bore 144 is counter-bored to seat a plunger spring 138 around the plunger pin 126 for biasing the plunger pin 136 into engagement with the locking holes 142. The plunger pin 136 protrudes from the upper half 124′ and includes a knob 140 to facilitate its actuation. In operation, the user simply disengages the plunger pin 136 by pulling on the knob 140 and then pivots the coupling 68′ to the desired position. When the plunger pin 136 is released, the spring 138 will push the plunger pin 136 into engagement with any aligned locking hole 142. The plunger assembly 134 can be incorporated into one or more of the other pivot locations on the support arm 10′ as desired.
The upper arm segment 16′ includes three flexible tubes 52a-c′. The flexible tubes 52a-c′ are generally identical to flexible tubes 52a-c′, each including a core (not shown) of conventional 0.156 inch annealed steel or annealed aluminum round stock, a filler (not shown) of conventional 100 percent silicone caulking, a casing (not shown) of conventional five eighth inch outer diameter flexible steel tube and a sleeve (not numbered) of heat shrink plastic. As in support arm 10, flexible tubes 52a-b′ are fixed at both ends, while flexible tube 52c′ has at least one free end. In the illustrated alternative embodiment, flexible tube 52c′ is fixed at one end to the upper swivel mount 24′ and its other end is free floating with respect to the coupling 68′. Movement of flexible tube 52c′ is perhaps best seen by comparing the position of the free end 53′ of tube 52c′ in
The upper joint assembly 18′ is largely identical to upper joint assembly 18 except as described below. As perhaps best shown in
In this alternative embodiment, the bracket 112′ is pivotally mounted to the upper joint assembly 18′ to permit rotational movement of the flat panel monitor 200. As shown in
A second alternative embodiment is shown in
The above description is that of various preferred embodiments of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular.
Claims
1. A support arm comprising:
- a base having a mounting means for mounting said base to a mounting structure;
- a rigid arm segment;
- a flexible arm segment, said rigid arm segment and said flexible arm segment being connected to one another, said interconnected segments having a first end and a second end, said first end being connected to said base; and
- a component mount connected to said second end of said interconnected segments.
2. The support arm of claim 1 wherein said flexible arm segment includes a plurality of discrete flexible tubes extending substantially parallel to one another.
3. The support arm of claim 2 wherein each of said plurality of flexible tubes includes a first end and a second end, at least one of said flexible tubes including a fixed first end and a fixed second end, at least one of said flexible tubes including a free floating first end.
4. The support arm of claim 3 further comprising a joint interconnecting said rigid arm segment and said flexible arm segment.
5. The support arm of claim 4 wherein said joint includes a locking mechanism for selectively locking said joint in a desired position.
6. The support arm of claim 3 further comprising a joint disposed between said interconnected segments and said component mount.
7. The support arm of claim 1 wherein said flexible arm segment includes at least one flexible tube, said flexible tube including a core, a flexible casing surrounding said core in a spaced apart relationship to define a void, and a filler material substantially filling said void.
8. The support arm of claim 7 wherein said core is a solid metal round stock.
9. The support arm of claim 8 wherein said filling material is a silicone caulk.
10. The support arm of claim 9 wherein said casing is a flexible coiled steel tube.
11. The support arm of claim 5 wherein said rigid arm segment is secured to said base and said flexible arm segment is secured to said component mount.
12. The support arm of claim 1 further comprising a second rigid arm segment, a second flexible arm segment and a second component mount; and
- wherein said second rigid arm segment, said second flexible arm segment and said second component mount are connected to said base.
13. A support arm comprising:
- a mounting base;
- a first arm segment mounted to said base;
- a second arm segment mounted to said first arm segment opposite said base; and
- a component mount connected to said second arm segment,
- wherein at least one of said first arm segment and said second arm second is a flexible arm segment.
14. The support arm of claim 13 wherein said flexible arm segment includes a plurality of discrete flexible tubes extending substantially parallel to one another.
15. The support arm of claim 13 wherein each of said plurality of flexible tubes includes a first end and a second end, at least one of said flexible tubes is a fixed tube including a fixed first end and a fixed second end, at least one of said flexible tubes is a floating tube having at least one free floating end.
16. The support arm of claim 15 wherein at least one of said plurality of flexible tubes includes a core, a casing surrounding said core in a spaced relationship to define a void between said core and said casing, and a filling material substantially filling said void.
17. The support arm of claim 14 wherein said first arm segment is connected to said second arm segment by a first joint, said first joint permit pivotal movement between said first arm segment and said second arm segment in at least one direction.
18. The support arm of claim 17 wherein said second arm segment is connected to said component mount by a second joint, said second joint permit pivotal movement between said first arm segment and said second arm segment in at least one direction.
19. The support arm of claim 18 wherein said flexible arm segment is further defined as said second arm segment.
20. The support arm of claim 19 wherein said fixed tube and said floating tube are vertically offset from one another.
21. The support arm of claim 13 further comprising a third arm segment, a fourth arm segment and a second component mount; and
- wherein said second third arm segment, said fourth arm segment and said second component mount are connected to said base and to one another to provide a support for a second component.
22. A support arm comprising:
- a mounting base;
- a flexible arm segment mounted to said base, said flexible arm segment including a plurality of discrete flexible tubes extending substantially parallel to one another; and
- a component mount connected to said arm segment.
23. The support arm of claim 22 wherein each of said plurality of flexible tubes includes a first end and a second end, at least one of said flexible tubes is a fixed tube including a fixed first end and a fixed second end, at least one of said flexible tubes is a floating tube having at least one free floating end.
24. The support arm of claim 23 wherein at least one of said plurality of flexible tubes includes a core, a casing surrounding said core in a spaced relationship to define a void between said core and said casing, and a filling material substantially filling said void.
25. A support arm comprising:
- a mounting base;
- a flexible arm segment mounted to said base, said flexible arm segment including a core, a casing surrounding said core in a spaced relationship to define a void between said core and said casing, and a filling material substantially filling said void; and
- a component mount connected to said arm segment.
26. The support arm of claim 25 wherein said flexible arm segment includes a plurality of discrete flexible tubes extending substantially parallel to one another.
27. The support arm of claim 26 wherein each of said plurality of flexible tubes includes a first end and a second end, at least one of said flexible tubes is a fixed tube including a fixed first end and a fixed second end, at least one of said flexible tubes is a floating tube having at least one free floating end.
Type: Application
Filed: May 12, 2008
Publication Date: Apr 9, 2009
Inventors: GERALD W. HENNING (Spring Lake, MI), Bruce R. Johnson (Muskegon, MI)
Application Number: 12/119,236
International Classification: A47B 96/06 (20060101);