A height adjustable desktop carrier

Abstract

The utility model discloses a height adjustable desktop object carrier, related to desktop object carrier technical field. Including being equipped with upper platform, middle platform, lower platform, and the two sides of each platform are symmetrically set to lower support and upper support, and the lower bottom surface of adjusting mechanism is installed in upper platform, and it is limited to the height of object carrier, and upper support and lower support are all by two cross -setting and the support rod of interlocking, and one end of support rod all interlocks platform, and the other end sliding connection adjacent platform, and adjusting mechanism is by suspension, ratchet wheel, rack, spring and push rod and is composed of single -row guide mechanism, and the height of object carrier is raised when ratchet wheel rolls, and object carrier is self -locking after stopping rolling. The rack and ratchet wheel no longer engage to reduce height by pushing the push rod lightly. The utility model discloses through increasing adjusting mechanism, and object carrier can be locked at any height, satisfies the need of placing different height articles, and increases its bearing capacity simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of desktop storage rack technology, and more specifically, it relates to a height-adjustable desktop storage rack. Background Technology

[0002] With the fast pace of life and work, people's needs for utilizing and organizing desktop space are increasing. Traditional desktop shelves are mostly fixed structures, bulky, and non-foldable, failing to meet the personalized height requirements of different users in different usage scenarios. Existing height-adjustable shelves are mostly fixed at specific points and have relatively weak load-bearing capacity. Therefore, the market urgently needs a desktop shelf that is height-adjustable, easy to transport and carry, structurally stable, and has a strong load-bearing capacity. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a height-adjustable desktop shelf with a simple and stable structure, strong load-bearing capacity, continuously adjustable height, simple operation, and very convenient use.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a height-adjustable desktop shelf, which is provided in parallel from top to bottom with an upper platform, a middle platform and a lower platform, two lower supports are symmetrically arranged on both sides of the middle platform and the lower platform, two upper supports are symmetrically arranged on both sides of the upper platform and the middle platform, and an adjustment mechanism is connected to the upper supports and installed on the bottom surface of the upper platform. The adjustment mechanism limits the position of the middle platform and the upper platform.

[0005] The upper support includes a first upper support rod and a second upper support rod arranged in a cross configuration, with the two upper support rods hinged at their intersection by a fourth hinge axis; the lower end of the first upper support rod is hinged to the middle platform via a third hinge axis, and the upper end is hinged to a third sliding shaft, which is horizontally slidably connected to the upper platform; the upper end of the second upper support rod is hinged to the upper platform via a fifth hinge axis, and the lower end is hinged to a second sliding shaft, which is horizontally slidably connected to the middle platform.

[0006] The lower support includes a first lower support rod and a second lower support rod arranged in a cross configuration, with the two lower support rods hinged at their intersection by a second hinge shaft; the lower end of the first lower support rod is hinged to the lower platform via the first hinge shaft, and the upper end is hinged to the second sliding shaft, which is slidably connected to the middle platform; the upper end of the second lower support rod is hinged to the middle platform via a third hinge shaft, and the lower end is hinged to the first sliding shaft, which is slidably connected to the lower platform.

[0007] Preferably, the lower platform includes a horizontal part and two vertical parts, the two vertical parts are symmetrically arranged on both sides of the horizontal part, and a second sliding groove is provided horizontally on the vertical part, and the first sliding shaft slides within the second sliding groove.

[0008] Preferably, the second sliding shaft slides within the horizontal groove of the middle platform, and the third sliding shaft slides within the horizontal groove of the upper platform.

[0009] Preferably, the adjustment mechanism includes two connecting rods, a ratchet shaft, a ratchet, a pulley, a rack, a suspension, and a push rod. The two connecting rods are symmetrically arranged on both sides of the upper platform. The two ends of the ratchet shaft are fixedly connected to the two connecting rods, and the other end of the connecting rod is fixedly connected to a third sliding shaft. The pulley is fixedly sleeved and connected to the ratchet shaft. The ratchet rotates and connects to the ratchet shaft. The ratchet meshes with the rack. The suspension is fixedly connected to the lower surface of the upper platform. The rack slides and connects to the suspension. The push rod slides and connects to the suspension. The push rod is fixedly connected to the rack. The push rod drives the rack to slide and move on the suspension.

[0010] Preferably, the suspension is an L-shaped structure consisting of a vertical part and a horizontal part. The vertical part is provided with a first groove, in which a pulley slides. The horizontal part is provided with a slide rail, in which the bottom of a rack slides. The vertical part is provided with a through hole, in which a push rod slides.

[0011] Preferably, the adjustment mechanism further includes a spring, one end of which is connected to the suspension and the other end to the ratchet shaft.

[0012] The beneficial effects of adopting the above technical solution are as follows:

[0013] This utility model, by setting up an adjustment mechanism, utilizes the engagement of a ratchet and a rack in the adjustment mechanism to allow the shelf to be locked at any height, meeting the placement needs of items of different sizes and improving desktop utilization;

[0014] When the shelf is raised, the ratchet of the adjustment mechanism rotates on the rack. Once the shelf reaches the desired height, the ratchet stops rotating. Due to the inherent characteristics of the ratchet, it will not rotate in the opposite direction, thus fixing the intersection angle of each support rod. This keeps the height of the upper and middle platforms constant, completing the limiting of the upper and middle platforms and improving their load-bearing capacity.

[0015] When the shelf is folded, the height of the upper and middle platforms is reduced, and it occupies less space after folding, making it convenient for storage and carrying; the shelf structure is symmetrical and the stress is stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the regulating mechanism;

[0018] Figure 3 This is a schematic diagram of the connection status of the push rod;

[0019] In the diagram: 1. Lower support; 11. First sliding shaft; 12. First hinge shaft; 13. First lower support rod; 14. Second hinge shaft; 15. Second lower support rod; 16. Second sliding shaft; 17. Third hinge shaft; 2. Upper support; 21. First upper support rod; 22. Second upper support rod; 23. Fourth hinge shaft; 24. Fifth hinge shaft; 25. Third sliding shaft; 3. Adjustment mechanism; 31. Connecting rod; 32. Ratchet shaft; 33. Spring; 34. Ratchet; 35. Pulley; 36. Rack; 37. Suspension; 371. First slide groove; 372. Slide rail; 38. Push rod; 4. Upper platform; 5. Middle platform; 6. Lower platform; 61. Horizontal part; 62. Vertical part; 63. Second slide groove. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] like Figure 1 As shown, the shelf is arranged in parallel from top to bottom as an upper platform 4, a middle platform 5, and a lower platform 6. The lower platform 6 includes a horizontal section 61 and two vertical sections 62, which are symmetrically arranged on both sides of the horizontal section 61. A second sliding groove 63 is horizontally provided on the vertical sections 62. The three platforms can adopt the same structure.

[0022] Two lower supports 1 are symmetrically arranged on both sides of the middle platform 5 and the lower platform 6, and two upper supports 2 are symmetrically arranged on both sides of the upper platform 4 and the middle platform 5.

[0023] The upper support 2 includes a first upper support rod 21 and a second upper support rod 22 arranged in a cross configuration. The two upper support rods are hinged at their intersection by a fourth hinge shaft 23. The lower end of the first upper support rod 21 is hinged to the middle platform 5 via a third hinge shaft 17, and the upper end is hinged to a third sliding shaft 25, which slides within a horizontal groove on the upper platform 4. The upper end of the second upper support rod 22 is hinged to the upper platform 4 via a fifth hinge shaft 24, and the lower end is hinged to a second sliding shaft 16, which slides within a horizontal groove on the middle platform 5.

[0024] The lower support 1 includes a first lower support rod 13 and a second lower support rod 15 arranged in a cross configuration. The two lower support rods are hinged at the intersection by a second hinge shaft 14. The lower end of the first lower support rod 13 is hinged to the lower platform 6 by a first hinge shaft 12, and the upper end is hinged to a second sliding shaft 16, which is slidably connected to the middle platform 5. The upper end of the second lower support rod 15 is hinged to the middle platform 5 by a third hinge shaft 17, and the lower end is hinged to a first sliding shaft 11, which slides within the second sliding groove 63.

[0025] The adjustment mechanism 3 is installed on the bottom surface of the upper platform 4, and the adjustment mechanism 3 limits the position of the middle platform 5 and the upper platform 4.

[0026] Specifically, such as Figure 2-3 As shown, the adjustment mechanism 3 includes two connecting rods 31, a ratchet shaft 32, a ratchet 34, a pulley 35, a rack 36, a suspension 37, and a push rod 38. The two connecting rods 31 are symmetrically arranged on both sides of the upper platform 4. The two ends of the ratchet shaft 32 are fixedly connected to the two connecting rods 371, and the other end of the connecting rod 31 is fixedly connected to a third sliding shaft 25. The pulley 35 is fixedly sleeved onto the ratchet shaft 32, and the ratchet 34 is rotatably connected to the ratchet shaft 32. The ratchet 34 meshes with the rack 36. The suspension 37 is fixedly connected to the lower surface of the upper platform 4. The suspension 37 is an L-shaped structure consisting of a vertical part and a horizontal part. The vertical part has a first sliding groove 371, within which the pulley 35 slides. The horizontal part has a sliding rail 372, along which the bottom of the rack 36 slides. A through hole is provided in the vertical part, within which the push rod 38 slides. Push rod 38 is fixedly connected to rack 36, and push rod 38 pushes rack 36 to slide along slide rail 372 on suspension 37. Spring 33 is also provided between suspension 37 and ratchet shaft 32. Spring 33 is a tension spring, which is to make adjustment easier.

[0027] When raising the shelf, simply lift the upper platform 4. The first sliding shaft 11, the second sliding shaft 16, and the third sliding shaft 25 simultaneously slide within their respective grooves. The two support rods of the lower support 1 and the two support rods of the upper support 2 gradually rise upwards. The third sliding shaft 25 drives the ratchet shaft 32 to move together, causing the ratchet 34 to roll on the rack 36. When the shelf reaches the desired height, release the upper platform 4. Because the ratchet 34 has a self-locking mechanism, it will not rotate in the opposite direction. The ratchet 34 stops at the gear 36 and will not roll further. Therefore, the shelf will not collapse and can withstand a large load.

[0028] When lowering the height of the upper platform (5), first push the push rod 38 to make the rack 36 slide along the slide rail 372 and disengage from the ratchet 34. At this time, the first slide shaft 11, the second slide shaft 16, and the third slide shaft 25 slide simultaneously in their respective slide grooves, and the two support rods of the lower support 1 and the two support rods of the upper support 2 gradually become more inclined downwards. When the appropriate height is reached, pull the push rod 38 backwards to make the rack 36 re-engage with the ratchet 34. If the rack 36 cannot engage smoothly with the ratchet 34, fine-tune the ratchet 34 and slightly lift the upper platform 4 so that the ratchet 34 rotates one or two teeth to engage with the rack 36. Fine-tuning the ratchet 34 will not have a significant impact on the height of the shelf.

[0029] Here, to limit the movement of the rack 36 so that it can disengage from the ratchet 34 but not from the suspension 37, a limiting platform can be set on the push rod 38, or a limiting block can be set on the slide rail 372. Since this is a conventional setting, the specific structure will not be described in detail.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A height-adjustable desktop shelf, characterized in that, The upper platform (4), middle platform (5), and lower platform (6) are arranged in parallel from top to bottom. Two lower supports (1) are symmetrically arranged on both sides of the middle platform (5) and the lower platform (6), and two upper supports (2) are symmetrically arranged on both sides of the upper platform (4) and the middle platform (5). The adjustment mechanism (3) is connected to the upper support (2) and installed on the bottom surface of the upper platform (4). The adjustment mechanism (3) limits the position of the middle platform (5) and the upper platform (4). The upper support (2) includes a first upper support rod (21) and a second upper support rod (22) arranged in a cross configuration. The two upper support rods are hinged at the intersection by a fourth hinge shaft (23). The lower end of the first upper support rod (21) is hinged to the middle platform (5) by a third hinge shaft (17), and the upper end is hinged to a third sliding shaft (25). The third sliding shaft (25) is horizontally slidably connected to the upper platform (4). The upper end of the second upper support rod (22) is hinged to the upper platform (4) by a fifth hinge shaft (24), and the lower end is hinged to a second sliding shaft (16). The second sliding shaft (16) is horizontally slidably connected to the middle platform (5). The lower support (1) includes a first lower support rod (13) and a second lower support rod (15) arranged in a cross configuration. The two lower support rods are hinged at the intersection by a second hinge shaft (14). The lower end of the first lower support rod (13) is hinged to the lower platform (6) by a first hinge shaft (12), and the upper end is hinged to the second sliding shaft (16). The second sliding shaft (16) is slidably connected to the middle platform (5). The upper end of the second lower support rod (15) is hinged to the middle platform (5) by a third hinge shaft (17), and the lower end is hinged to the first sliding shaft (11). The first sliding shaft (11) is slidably connected to the lower platform (6).

2. The height-adjustable desktop shelf according to claim 1, characterized in that, The lower platform (6) includes a horizontal part (61) and two vertical parts (62). The two vertical parts (62) are symmetrically arranged on both sides of the horizontal part (61). A second sliding groove (63) is horizontally provided on the vertical part (62), and the first sliding shaft (11) slides within the second sliding groove (63).

3. The height-adjustable desktop shelf according to claim 2, characterized in that, The second slide shaft (16) slides within the horizontal groove of the middle platform (5), and the third slide shaft (25) slides within the horizontal groove of the upper platform (4).

4. The height-adjustable desktop shelf according to claim 1, characterized in that, The adjustment mechanism (3) includes two connecting rods (31), a ratchet shaft (32), a ratchet (34), a pulley (35), a rack (36), a suspension (37), and a push rod (38). The two connecting rods (31) are symmetrically arranged on both sides of the upper platform (4). The two ends of the ratchet shaft (32) are fixedly connected to the two connecting rods (31), and the other end of the connecting rod (31) is fixedly connected to the third sliding shaft (25). The pulley (35) is fixedly sleeved and connected to the ratchet shaft (32). The ratchet (34) is rotatably connected to the ratchet shaft (32). The ratchet (34) is meshed with the rack (36). The suspension (37) is fixedly connected to the lower surface of the upper platform (4). The rack (36) is slidably connected to the suspension (37). The push rod (38) is slidably connected to the suspension (37). The push rod (38) is fixedly connected to the rack (36). The push rod (38) drives the rack (36) to slide on the suspension (37).

5. A height-adjustable desktop shelf according to claim 4, characterized in that, The suspension (37) is an L-shaped structure consisting of a vertical part and a horizontal part. The vertical part is provided with a first groove (371), and the pulley (35) slides within the first groove (371). The horizontal part is provided with a slide rail (372), and the bottom of the rack (36) slides along the slide rail (372). The vertical part is provided with a through hole, and the push rod (38) slides within the through hole.

6. A height-adjustable desktop shelf according to claim 4, characterized in that, The adjustment mechanism (3) also includes a spring (33), one end of which is connected to the suspension (37) and the other end is connected to the ratchet shaft (32).

Images