Adjustable ergonomic workstation

Abstract

This disclosure provides an adjustable ergonomic workstation that includes first platform and a second platform that is coupled to and positioned below the first platform, wherein the first platform may be moved between at least a lowered position and a first raised position and wherein the coupling of the second platform to the first platform includes a tilt adjustment assembly wherein the second platform may be adjusted between at least a first angular position and a second angular position relative to the first platform.

Claims

1. An adjustable ergonomic workstation comprising: a base, a leg assembly, a first platform and a second platform; the leg assembly being coupled to and extending between the base and the first platform, and being adjustable to move the first platform between at least a lowered position and a first raised position; the second platform being coupled to and positioned below the first platform; the coupling of the second platform to the first platform including a tilt adjustment assembly wherein the second platform is adjustable between at least a first angular position and a second angular position relative to the first platform; the tilt adjustment assembly including two pair of upper and lower brackets, with each upper bracket connected to the first platform, and each lower bracket connected to the second platform proximate a rear portion of an opposed side of the second platform; wherein at least one of the upper brackets and at least one of the lower brackets are pivotally coupled to each other about a pivot that is in a fixed location relative to the first and second platforms and that is spaced from a clamping mechanism by which the at least one of the upper brackets is held in a selected position relative to the at least one of the lower brackets so as to hold the lower platform at a selected angle relative to the upper platform; wherein the leg assembly further comprises two pair of legs coupled to the base and to the platform, wherein each pair of legs includes a forward leg and a rearward leg; wherein the first platform includes spaced apart mounting brackets, and each leg of each pair of legs is pivotally coupled at an upper end to one of the mounting brackets of the first platform and is pivotally coupled to a stabilizer bracket, and the stabilizer bracket is separately pivotally coupled to the same respective mounting bracket of the first platform; wherein an upper surface of the first platform generally comprises a first planar surface and an upper surface of the second platform generally comprises a second planar surface, and the at least first and second angular positions of the second platform include a first position in which the second planar surface is parallel to the first planar surface, and a second position in which the second planar surface has a forward angle relative to the first planar surface; and wherein the tilt adjustment assembly is adjustable to at least a third angular position of the second platform in which the second planar surface has a rearward angle relative to the first planar surface.

2. The adjustable ergonomic workstation of claim 1, wherein the leg assembly is adjustable to move the first platform to at least a second raised position that is between the lowered position and the first raised position.

3. The adjustable ergonomic workstation of claim 1, wherein each pair of legs of the leg assembly together with the base and the first platform forms a four bar linkage.

4. The adjustable ergonomic workstation of claim 1, wherein a cross member is connected to each rearward leg of the two pair of legs.

5. The adjustable ergonomic workstation of claim 1, wherein the base further comprises at least two spaced apart base members, and each leg of each pair of legs is coupled at a lower end to one of the respective base members.

6. The adjustable ergonomic workstation of claim 5, wherein the base further comprises a cross member that extends between and is connected to the base members.

7. The adjustable ergonomic workstation of claim 1, further comprising a height adjustment assembly having at least one gas cylinder that assists in supporting the first platform when moving the first platform between the lowered and first raised positions.

8. The adjustable ergonomic workstation of claim 7, further comprising a cable system that is actuatable to operate a locking mechanism on the at least one gas cylinder.

9. The adjustable ergonomic workstation of claim 8, wherein the cable system further comprises at least one paddle that is used to actuate a cable.

10. The adjustable ergonomic workstation of claim 1, wherein the first and second platforms are generally rectangular in shape.

11. The adjustable ergonomic workstation of claim 1, wherein the second platform includes a portion extending forward of the first platform.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In describing the example apparatus and methods disclosed herein, reference is made to the accompanying drawings wherein like parts have like reference numerals, and wherein:

(2) FIG. 1 is a front perspective view that shows an example of an adjustable ergonomic workstation having first and second platforms and being in a lowered position, and with portions of the height adjustment assembly removed for easier viewing of the underlying structure;

(3) FIG. 2 is a front perspective view of the example workstation shown in FIG. 1, in a first raised position, having the second platform in an angular position parallel to the first platform, and with portions of the height adjustment assembly removed for easier viewing of the underlying structure;

(4) FIG. 3 is a side view of the example workstation in the position shown in FIG. 2;

(5) FIG. 4 is a front view of the example workstation in the position shown in FIG. 2;

(6) FIG. 5 is a cross-section side view of the example workstation in the position shown in FIG. 2, and showing a right portion with the second platform in a generally horizontal position;

(7) FIG. 6 is a front perspective view of the example workstation in the position shown in FIG. 2, and with the platforms and portions of the height adjustment assembly removed for easier viewing of the underlying structure;

(8) FIG. 7 is a front perspective view of the example workstation in the position shown in FIG. 1, and with the platforms and portions of the height adjustment assembly removed for easier viewing of the underlying structure;

(9) FIG. 8 is a close-up perspective partially exploded view of a tilt adjustment assembly of the example workstation shown in FIG. 1;

(10) FIG. 9 is a cross-section side view of a right portion of the example workstation with the first platform in the first raised position shown in FIG. 2 but with the second platform in an angular position tilted rearward, and with portions of the height adjustment assembly removed for easier viewing of the underlying structure; and

(11) FIG. 10 is a cross-section side view of a right portion of the example workstation with the first platform in the first raised position shown in FIG. 2 but with the second platform in an angular position tilted forward, and with portions of the height adjustment assembly removed for easier viewing of the underlying structure.

(12) It should be understood that the drawings are not necessarily to scale and that actual embodiments may differ. While some mechanical details, including some details of fastening or connecting means and other plan and section views of the particular components are not included, such details are considered within the comprehension of those of ordinary skill in the art in light of the present disclosure. It also should be understood that the claims are not limited to the particular examples illustrated, but rather cover various configurations of adjustable ergonomic workstations.

DETAILED DESCRIPTION

(13) This disclosure presents an example and discusses alternative adjustable ergonomic workstations and methods of using the same, which may be embodied in several forms. Persons of ordinary skill in the art will appreciate that the teachings of this disclosure are in no way limited to the example embodiment. On the contrary, it is contemplated that the teachings of this disclosure may be implemented in alternative configurations and environments.

(14) Referring to FIGS. 1-10, it will be appreciated that an example adjustable ergonomic workstation 10 is provided for use between a lowered position, such as may be used when a user is seated, and a first raised position, such as may be used when a user is standing. As will be described in further detail herein, the workstation 10 includes a base 20, a leg assembly 30, a first platform 40 and a second platform 50. The leg assembly 30 is coupled to and extends between the base 20 and the first platform 40, and is adjustable to move the first platform 40 between at least a lowered position, as may be seen in FIG. 1, and a first raised position, as may be seen in FIG. 2. The second platform 50 is coupled to and positioned below the first platform 40. Also, the coupling of the second platform 50 to the first platform 40 includes a tilt adjustment assembly 60, wherein the second platform 50 may be adjusted between at least a first angular position and a second angular position relative to the first platform 40.

(15) As may be seen in FIG. 2, the base 20 includes a pair of spaced apart base members 21, which in this example workstation 10 are laterally spaced apart. The base 20 further includes a base cross member 22 that extends between and is connected to the base members 21. The connection of the base cross member 22 to the base members 21 helps to keep the base members 21 evenly spaced apart, for improved stability of the workstation 10. The base cross member 22 is located near the rear of the base members 21, so as to provide unobstructed space between the base members 21.

(16) The base members 21 also are shown in a configuration that generally is L-shaped, with a flat lower portion 23 and an upstanding portion 24. The base cross member 22 is shown in a configuration that generally is a single U-shaped channel that is open downward, but it will be appreciated that more than one base cross member may be used and that the one or more base cross members may have a different configuration. The base members 21 and base cross member 22 may be constructed of rigid materials, such as metal, plastic or the like, and may be connected together by suitable means, such as by welding, adhesives or use of fasteners or the like. The base members 21 may have pads 25 located on their lower surface for floor protection and/or anti-skid purposes. The base members 21 also may include covers 26 for aesthetics and/or to shield moving parts and avoid potential pinch points. The covers may be constructed of suitable materials, such as plastic, metal or the like, and may be connected by snap fit, press fit, the use of fasteners or other suitable means of connection.

(17) As may be seen in FIGS. 1 and 2, the first platform 40 has an upper surface that generally comprises a first planar surface 41 and includes a pair of spaced apart mounting brackets 42 connected to its lower surface. The second platform 50 has an upper surface that generally comprises a second planar surface 51. It will be appreciated that the first and second platforms 40, 50 preferably are constructed of rigid materials, such as wood, metal or plastic, may be generally rectangular in shape and may include apertures, impressions and/or upstanding features, although it will be appreciated that other shapes or configurations may be used. For instance, the first platform 40 of the example workstation 10 is shown with an aperture 47 for accommodating electrical cables or wiring, and may include an insert for aesthetics to limit the size of the opening after passing cable or wiring ends through the aperture 47. Also, because the second platform 50 is coupled to and positioned below the first platform 40, for convenience and to provide a significant unobstructed work area, the second platform 50 may include a rear portion 52 directly below the first platform 40 and a portion 53 that extends forward of the first platform 40, as may be seen in FIGS. 1-3 and 5.

(18) The leg assembly 30 of the example workstation 10 includes two pair of legs coupled to the base 20, such as at the upstanding portion 24, and to the first platform 40, such as at the mounting brackets 42. Each pair of legs includes a forward leg 31 and a rearward leg 32. For improved rigidity and aesthetics, as well as to avoid pinch points, each leg 31, 32 of the example workstation 10 has an elongated L-shape, and each pair of legs has overlapping parallel planar portions of the respective L-shaped legs 31, 32. For instance, as may be seen in FIGS. 2, 3 and 5, an outer planar portion of the forward leg 31 may overlap an outer planar portion of the rearward leg 32. With each forward leg 31 being pivotally coupled to the first platform 40 at an upper end at pivot 43 and to the base 20 at a lower end at pivot 27, and each rearward leg 32 being pivotally coupled to the first platform 40 at an upper end at pivot 44 and to the base 20 at a lower end at pivot 28, it will be appreciated that each pair of legs 31, 32 of the leg assembly 30 together with the base 20 and first platform 40 forms a four bar linkage. The pivots used throughout the workstation 10 may be formed using any suitable fasteners, including tubular nuts that may be welded in place and accommodate bolts, or press fit or welded pins, rivets or the like. The pivots also may include bushings or other suitable means to reduce friction and enhance smooth operation.

(19) It will be appreciated that the leg assembly 30 is adjustable to move the first platform 40 to at least a second raised position that is between the lowered position shown in FIG. 1 and the first raised position shown in FIG. 2. Indeed, with the particular example workstation 10 shown, the leg assembly 30 does not have predetermined intermediate positions, but rather is adjustable in a manner that permits the first platform 40 to be positioned at any height between the lowermost and uppermost positions.

(20) To provide for better durability and smoother operation, the example workstation 10 includes upper stabilizer brackets 45. On each side of the example workstation 10, an upper stabilizer bracket 45 is coupled to the mounting bracket 42 and the upper end of the forward leg 31 at the pivot 43, is coupled to the same mounting bracket 42 and the upper end of the rearward leg 32 at the pivot 44, and is separately coupled at a post 46 to the same mounting bracket 42. The couplings of each stabilizer bracket 45 in this example are at pivots 43 and 44 and at post 46, but it will be appreciated that the stabilizer brackets 45 help to disperse the loads otherwise asserted at the upper pivots 43, 44. It also will be appreciated that the example workstation 10 includes lower stabilizer brackets that are similar to the upper stabilizer brackets 45, but which are not shown because they are hidden from view by the covers 26 of the base 20. The lower stabilizer brackets are coupled to the side members 21 of the base 20 at the lower ends of the forward and rearward legs 31, 32 at the respective pivots 27, 28 while also being separately coupled at a post 29, so as to provide benefits similar to those provided by the upper stabilizer brackets 45.

(21) To add further stability and ensure coordinated movement of all components within the leg assembly 30 on the left and right sides of the example workstation 10, a leg cross member 33 is connected to each rearward leg 32 of the pair of legs. The leg cross member 33 is shown as a single rectangular tube, but it will be appreciated that more than one leg cross member may be used and that the one or more leg cross members may have a different configuration and be connected in different ways. The legs 31, 32 and leg cross member 33 may be constructed of rigid materials, such as metal or plastic, and may be connected by suitable means, such as by welding, adhesives or use of fasteners or the like.

(22) To provide for the adjustment of the height of the first platform, the leg assembly 30 of the example workstation 10 further includes a height adjustment assembly 70 that may be best seen in FIGS. 4 and 5. The height adjustment assembly 70 includes at least one gas cylinder 71 that assists in supporting the first platform 40, and thereby also the second platform 50, when moving the first platform 40 between the lowered position shown in FIG. 1 and the first raised position shown in FIG. 2. In this example, the height adjustment assembly 70 happens to include two gas cylinders 71. It will be appreciated that use of a gas cylinder or gas spring is one alternative means of providing lift and height adjustment to a workstation. One of ordinary skill in the art will understand that other lifting and/or load bearing structures may be utilized for height adjustment of a workstation, whether using other configurations of a gas spring, or using more traditional coil or leaf springs, or other suitable structures that may provide lift or counterbalance.

(23) Each gas cylinder 71 is coupled to a pair of legs 31, 32, including being pivotally coupled at an upper end to a forward leg 31 at a pivot 72, and pivotally coupled at a lower end to a rearward leg 32 at a pivot 73. Each gas cylinder 71 also includes a locking mechanism 74 at its lower end, and the workstation 10 includes a cable system 75 that is actuatable to operate the locking mechanism 74 on the at least one gas cylinder 71. Each lower pivot 73 and locking mechanism 74 is protected by a cover 34, which shields the moving parts and avoids potential pinch points. The cable system 75 includes a paddle 76 at an upper end, which is pivotally coupled to the first platform 40 by a housing 77 that is connected to the lower surface of the first platform 40, and a lever 78 at a lower end to actuate the locking mechanism 74 of the gas cylinder 71. A cable 79 is connected at its upper end to the paddle 76 and at its lower end to the lever 78. The paddle 76 is used to actuate the cable 79, and therefore, the locking mechanism 74. The pressure in the gas cylinder 71 provides the return bias for the cable system 75, to return the paddle 76 to a ready position shown in FIG. 4. The locking mechanism 74 of each gas cylinder 71 permits the example workstation 10 to be adjusted to essentially any desired height between the lowered position shown in FIG. 1 and the first raised position shown in FIG. 2. Covers 34 may be used for aesthetics, to provide protection and reduce pinch points by shielding the locking mechanism 74, lever 78 and lower end of the cable 79 along the inner side of each rear leg 32. The covers 34 may be constructed of similar materials and installed in a similar manner to the aforementioned covers 26.

(24) The tilt adjustment assembly 60 of the example workstation 10 is coupled to the first platform 40 and the second platform 50. In this example, on each side of the workstation 10, the tilt adjustment assembly 60 includes an upper bracket 61 that is connected to the first platform 40 and a lower bracket 62 that is connected to the second platform 50. For improved support and aesthetics, the upper bracket 61 is connected to the lower surface of the first platform 40, and the lower bracket 62 extends along recessed areas 54 in the sides of the second platform 50, as may be seen in FIGS. 1-3, and is connected to the lower surface of the second platform 50. The connection of the upper and lower brackets 61, 62 to the upper and lower platforms 40, 50 is shown simplistically by fasteners, such as screws, but it will be appreciated that the connections may be made by suitable means, such as by adhesives, other fasteners or the like.

(25) As may be appreciated from FIGS. 4-6 and 8-10, on each side of the workstation 10, the upper and lower brackets 61, 62 are pivotally coupled at a pivot 63. In this example, each upper bracket 61 further includes an arcuate opening 64 that is spaced from the pivot 63 and each lower bracket 62 includes an aperture 65 that is aligned with the arcuate opening 64. On the left side of the example workstation 10, the tilt adjustment assembly 60 further includes a post 66 that may be provided for instance by a bolt and nut, which are not tightened to the point of applying a clamping load. On the left side, the post 66 extends from the aperture 65 in the lower bracket 62 and is located within and slidable relative to the arcuate opening 64 in the upper bracket 61.

(26) On the right side of the example workstation 10, the tilt adjustment assembly 60 includes a clamping mechanism 67, which includes a threaded bolt 68 and a corresponding threaded knob 69. The bolt 68 is located in the aperture 65 of the lower bracket 62 and extends through the arcuate opening 64 in the upper bracket 61. When the knob 69 is loosened, the lower bracket 62 is pivotable relative to the upper bracket 61 about the pivot 63, as the bolt 68 moves within the arcuate opening 64. This permits angular adjustment of the second platform 50 relative to the upper platform 40. When a desired angular position of the second platform 50 is selected, the knob 69 may be tightened by hand to apply a clamping load to prohibit further pivotal movement of the lower bracket 62 and the second platform 50 relative to the upper bracket 61 and the first platform 40. It will be appreciated that while the example workstation 10 conveniently includes a single clamping mechanism on the right side of the workstation and uses a bolt and knob, alternative tilt adjustment assemblies may be utilized in other configurations and on a single side or both sides of the workstation.

(27) One may consider the first platform 40 to have an upper surface that generally comprises a first planar surface 41 and the second platform 50 to have an upper surface that generally comprises a second planar surface 51. The tilt adjustment assembly 60 may be adjusted to have at least first and second angular positions of the second platform 50 relative to the first platform 40. For instance, a first angular position may be achieved when the second planar surface 51 of the second platform 50 is parallel to the first planar surface 41 of the first platform 40, such as may be seen in FIGS. 2, 3 and 5. A second angular position may be achieved when the second planar surface 51 has a rearward angle relative to the first planar surface 41, such as may be seen in FIG. 9, where the second planar surface 51 is tilted toward the user. Alternatively, a workstation may have first and second angular position where the first angular position is when the second planar surface 51 is parallel to the first planar surface 41, such as again may be seen in FIGS. 2, 3 and 5, and with the second angular position being achieved when the second planar surface 51 has a forward angle relative to the first planar surface 41, such as may be seen in FIG. 10, where the second planar surface 51 is tilted away from the user. Of course, as is shown with the example workstation 10, if one considers the second angular position to be when the second planar surface 51 has a forward angle relative to the first planar surface 41, then the tilt adjustment assembly 60 may provide at least a third angular position of the second platform 50 when the second planar surface 51 has a rearward angle relative to the first planar surface 41, such as may be seen in FIG. 9.

(28) While the present disclosure shows and describes example apparatus for adjustable ergonomic workstations, and methods of using the same, the example and alternatives discussed are merely illustrative and are not to be considered limiting. It will be apparent to those of ordinary skill in the art that apparatus in accordance with the present disclosure may be provided in various configurations, constructed of various materials and may be constructed to be used on various surfaces, such as a desk top, table top or other suitable surfaces, without departing from the scope or spirit of the present disclosure. Any variety of suitable materials of construction, configurations, shapes and sizes for the components and methods of coupling and connecting the components within the scope of the claims may be utilized to meet the particular needs and requirements of an end user. Thus, although example embodiments and methods of assembly relating to the adjustable ergonomic workstations have been described herein, the scope of coverage of this patent is not limited to the examples illustrated. On the contrary, this patent covers all methods, apparatus and articles of manufacture fairly falling within the scope of the appended claims either literally or under the doctrine of equivalents.