Lifting type desk

Abstract

The utility model discloses a lifting type desk which comprises a desk plate and desk legs and further comprises a positioning mechanism installed at the bottom of the desk plate, each desk leg comprises a supporting column, a moving rod is arranged on the upper side of each supporting column in a sliding mode, the moving rods are fixedly connected with the desk plate, the positioning mechanism comprises an object placing block fixedly connected with the desk plate, and the object placing blocks are fixedly connected with the desk plate. A guide groove is formed in the lower side of the storage block, a sliding block is installed in the guide groove, a supporting rod is hinged to the lower side of the sliding block, the side, away from the sliding block, of the supporting rod is hinged to the supporting column, convex teeth are fixedly installed on the surface of the sliding block, a toothed plate is slidably installed on the storage block, and a driving piece for driving the toothed plate to move is installed on the table plate. When the height of the table plate is adjusted, the toothed plate is manually driven to be far away from the convex teeth through the driving piece, an upward or downward force is applied to the table plate at the moment, the table plate moves, the sliding block moves in the sliding groove, when the table plate is fixed, the rack is meshed with the convex teeth on the sliding block, the height of the table plate is fixed, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of desks, in particular to a lifting desk. Background Art

[0002] Traditional desks and chairs are fixed and their height cannot be adjusted. However, there is a certain height difference among students of the same grade. Therefore, it is unreasonable to limit the height of desks and chairs used by all students to the same height.

[0003] For this reason, some existing desks are designed to be height-adjustable, generally including two bases arranged opposite to each other, with lifting columns installed on the bases, the lifting columns are fixed to the desk board, and multiple positioning holes are opened on the lifting columns and the bases. Bolts are passed through the positioning holes on the base and the lifting columns for positioning. According to the required desk height, the bolts are passed through different positioning holes to adjust the height of the desk board.

[0004] However, after the heights of the two lifting columns are adjusted, the bolts need to be installed in the corresponding positioning holes respectively, and the bolts need to be installed on the bases on both sides. It is inconvenient for one person to operate, and there are many operation steps, which takes a long time. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the present utility model is to provide a lifting desk, which is convenient for adjusting the height of the desk and simple to operate.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting desk, including a table board and table legs, and also including a positioning mechanism installed at the bottom of the table board. The table legs include two support columns relatively arranged on both sides of the table board, and a bottom plate is fixedly installed at the bottom of each support column, and a moving rod is slidably arranged on the upper side of each support column, and the moving rod is fixedly connected to the table board. The positioning mechanism includes a storage block fixedly connected to the table board, and a guide groove is opened on the lower side of the storage block. A slider is installed in the guide groove, and a support rod is hinged on the lower side of the slider. The side of the support rod away from the slider is hinged to the support column, and a convex tooth is fixedly installed on the surface of the slider, and a tooth plate is slidably installed on the storage block. A driving member that drives the tooth plate to move is installed on the table board. When the height of the table board needs to be adjusted, the tooth plate and the convex tooth are in a separated state, and when the table board needs to be positioned, the tooth plate and the convex tooth are in a meshing state.

[0007] Furthermore, a guide hole is provided on the upper side of the support column, and part of the moving rod is slidably arranged in the guide hole.

[0008] Furthermore, the tooth plate is located on the horizontal side of the storage block.

[0009] Furthermore, a bearing block is fixedly mounted on the side of the placement block, a slide groove is provided on the bearing block, the tooth plate is slidably arranged in the slide groove, and a through hole connecting the guide groove and the slide groove is provided on the side of the placement block.

[0010] Furthermore, the driving member includes a pull rod, a handle is fixedly installed on one side of the pull rod, and the other side of the pull rod is fixedly connected to the tooth plate. The supporting block is provided with a through hole for the pull rod to pass through, and a spring is fixedly installed on the tooth plate and the inner wall of the slide groove.

[0011] Furthermore, there are two sliders, which are respectively arranged on both sides of the guide groove. When the table top is positioned, the protruding teeth on the two sliders are in meshing state with the tooth plate.

[0012] Furthermore, a table drawer is fixedly installed on the lower side of the table top, and the storage block is fixedly installed on the lower side of the table drawer.

[0013] Compared with the prior art, the beneficial effect of the utility model is as follows: when the height of the table top needs to be adjusted, the tooth plate is manually driven away from the convex teeth through the driving member, so that the slider can slide in the guide groove. At this time, an upward or downward force is applied to the table top, the table top moves, driving the moving rod to move, and then the slider moves in the slide groove, wherein the driving member is installed on the table top, so that the drive moves with the table top, which is convenient for fixing the table top, driving the rack to engage with the convex teeth on the slider, and then limiting the movement of the slider, so that the slider is in a static state relative to the object block, so that the support rod cannot rotate relative to the support column, thereby limiting the movement of the table top, so that the height of the table top is fixed, and the operation is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the positioning mechanism of the utility model;

[0017] Figure 4 This is an exploded first-view diagram of the positioning mechanism of the utility model;

[0018] Figure 5 This is an exploded second viewing angle diagram of the positioning mechanism of the utility model.

[0019] In the figure: 1. table top; 2. table legs; 21. support column; 22. bottom plate; 23. guide hole; 24. moving rod; 3. positioning mechanism; 31. storage block; 32. guide groove; 33. slider; 34. support rod; 35. baffle; 36. convex teeth; 37. tooth plate; 38. driving member; 39. pull rod; 40. handle; 41. through hole; 42. spring; 4. load-bearing block; 5. slide groove; 6. through hole; 7. table drawer. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 and Figure 2 This embodiment provides a lifting desk, including a desk top 1 and table legs 2, wherein the length of the table legs 2 is adjustable, and also includes a positioning mechanism 3.

[0022] The role of the positioning mechanism 3 is as follows: when the table leg 2 is adjusted to a suitable position, the length of the table leg 2 is fixed to limit the extension and retraction of the table leg 2; when the height of the table board 1 needs to be adjusted, the length limit of the table leg 2 is released through the adjustment mechanism, so that the length of the table leg 2 can be adjusted again, thereby facilitating the height adjustment of the table board 1.

[0023] The table legs 2 include two groups of supporting columns 21 arranged opposite to each other, each group of supporting columns 21 has two supporting columns, and a base plate 22 is fixedly installed at the bottom of each group of supporting columns 21. A guide hole 23 is opened on the upper side of the supporting column 21, and a moving rod 24 is slidably arranged in the guide hole 23. The moving rod 24 is fixedly connected to the table top 1.

[0024] When it is necessary to adjust the length of the table leg 2, the positioning mechanism 3 releases the limit on the table leg 2, that is, the moving rod 24 is moved in the vertical direction relative to the support column 21, and then the table top 1 is manually moved in the vertical direction. The table top 1 drives the moving rod 24 to move relative to the support column 21, thereby adjusting the height of the table top 1. After the adjustment is completed, the positioning mechanism 3 is used to limit the movement of the moving rod 24 relative to the support column 21.

[0025] See also Figure 2-Figure 5, wherein the positioning mechanism 3 is installed at the bottom of the table board 1, the positioning mechanism 3 includes a storage block 31 fixedly connected to the table board 1, a guide groove 32 is opened on the lower side of the storage block 31, a slider 33 is installed in the guide groove 32, a support rod 34 is hinged on the lower side of the slider 33, a baffle 35 for supporting the slider 33 is fixedly installed at the bottom of the storage block 31, the side of the support rod 34 away from the slider 33 is hinged to the support column 21, a convex tooth 36 is fixedly installed on the surface of the slider 33, a tooth plate 37 is slidably installed on the storage block 31, and a driving member 38 for driving the tooth plate 37 to move is installed on the table board 1. When the height of the table board 1 needs to be adjusted, the tooth plate 37 and the convex tooth 36 are in a separated state, and when the table board 1 needs to be positioned, that is, when the table board 1 is fixed relative to the support column 21, the tooth plate 37 and the convex tooth 36 are in a meshing state.

[0026] When the height of the table top 1 needs to be adjusted, the tooth plate 37 is manually driven by the driving member 38 to move away from the convex teeth 36. At this time, the convex teeth 36 on the slider 33 are no longer limited by the tooth plate 37, and the slider 33 can slide in the guide groove 32. When the height of the table top 1 needs to be adjusted upward, an upward force is manually applied to the table top 1, and the table top 1 moves upward, driving the moving rod 24 to move upward, thereby causing the slider 33 to move toward one side of the moving rod 24 hinged to the support rod 34, that is, reducing the angle between the support rod 34 and the moving rod 24. When it is adjusted to the required height, the tooth plate 37 is driven by the driving member 38 to move in the direction of the slider 33, so that the tooth plate 37 is meshed with the convex teeth 36 on the slider 33, and then the limiting slider 33 moves, so that the slider 33 is in a static state relative to the object block 31, so that the support rod 34 cannot rotate relative to the support column 21, thereby limiting the movement of the table top 1, so that the height of the table top 1 is fixed;

[0027] When the height of the table top 1 needs to be adjusted downward, after the tooth plate 37 is separated from the convex tooth 36, the table top 1 moves downward, and the slider 33 moves to the side away from the moving rod 24 hinged to the support rod 34, that is, the angle between the support rod 34 and the moving rod 24 is increased. When it is adjusted to the required height, the driving member 38 drives the tooth plate 37 to move in the direction of the slider 33, so that the tooth plate 37 engages with the convex tooth 36 on the slider 33, so that the slider 33 is in a static state relative to the object block 31, and finally the height of the table top 1 is positioned.

[0028] Since the driving member 38 is located on the table top 1, the driving member 38 moves with the table top 1, which is convenient for manual operation. Compared with installing a limit member on the moving rod 24 and the support column 21, as described in the background technology, the operation is simpler. Since the limit member is installed on the support column 21, the limit member cannot move. When the table top 1 is moved to a high position, the low-position limit member needs to be adjusted, which is inconvenient.

[0029] See also Figure 2 and Figure 4 The tooth plate 37 is located on the horizontal side of the placement block 31, a bearing block 4 is fixedly installed on the side of the placement block 31, a slide groove 5 for the movement of the tooth plate 37 is opened on the bearing block 4, and a through hole 6 connecting the guide groove 32 and the slide groove 5 is opened on the side of the placement block 31.

[0030] The tooth plate 37 moves in the slide groove 5 under the drive of the driving member 38 , and when engaging with the convex teeth 36 , the tooth plate 37 passes through the through hole 6 and engages with the convex teeth 36 .

[0031] See also Figure 3-Figure 5 The driving member 38 includes a pull rod 39, a handle 40 is fixedly installed on one side of the pull rod 39, and the other side of the pull rod 39 is fixedly connected to the tooth plate 37. A through hole 41 is opened on the bearing block 4 for the pull rod 39 to pass through, and a spring 42 is fixedly installed on the tooth plate 37 and the inner wall of the slide groove 5.

[0032] When the height of the table top 1 needs to be adjusted, the handle 40 is pulled manually, and the handle 40 drives the tooth plate 37 to separate from the convex teeth 36 through the pull rod 39. When the tooth plate 37 moves, the spring 42 is squeezed, and elastic potential energy is accumulated inside the spring 42. When the table top 1 needs to be limited, the pulling force on the handle 40 is manually released, and under the action of the spring 42, the tooth plate 37 moves to engage with the convex teeth 36.

[0033] See also Figure 3 There are two sliders 33, which are respectively arranged on both sides of the guide groove 32. When the table board 1 is positioned, the protruding teeth 36 on the two sliders 33 are in meshing state with the tooth plate 37.

[0034] Through the two sliding blocks 33 , the support rods 34 on the two sliding blocks 33 respectively support the support rods 34 on both sides, so that the force on the table top 1 is more uniform.

[0035] See also Figure 1 A table drawer 7 is fixedly installed on the lower side of the table board 1, and a storage block is fixedly installed on the lower side of the table drawer 7.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A lifting desk, comprising a desk top (1) and desk legs (2), and also comprising a positioning mechanism (3) mounted at the bottom of the desk top (1), wherein the desk legs (2) comprise two supporting columns (21) arranged opposite to each other on both sides of the desk top, a bottom plate (22) being fixedly mounted at the bottom of each supporting column (21), and a moving rod (24) being slidably mounted on the upper side of each supporting column (21), wherein the moving rod (24) is fixedly connected to the desk top (1), and characterized in that: The positioning mechanism (3) comprises a storage block (31) fixedly connected to the table top (1), a guide groove (32) being provided on the lower side of the storage block (31), a slider (33) being installed in the guide groove (32), a support rod (34) being hinged on the lower side of the slider (33), a side of the support rod (34) away from the slider (33) being hinged to a support column (21), a convex tooth (36) being fixedly installed on the surface of the slider (33), a tooth plate (37) being slidably installed on the storage block (31), a driving member (38) for driving the tooth plate (37) to move being installed on the table top (1), when the height of the table top (1) needs to be adjusted, the tooth plate (37) and the convex tooth (36) are in a separated state, and when the table top (1) needs to be positioned, the tooth plate (37) and the convex tooth (36) are in a meshing state.

2. The liftable desk according to claim 1, characterized in that: A guide hole (23) is provided on the upper side of the support column (21), and a portion of the moving rod (24) is slidably disposed in the guide hole (23).

3. The liftable desk according to claim 1, characterized in that: The tooth plate (37) is located on the horizontal side of the storage block (31).

4. The liftable desk according to claim 3, characterized in that: A bearing block (4) is fixedly mounted on the side of the placement block (31), a slide groove (5) is provided on the bearing block (4), the tooth plate (37) is slidably arranged in the slide groove, and a through hole (6) communicating with the guide groove (32) and the slide groove (5) is provided on the side of the placement block (31).

5. The liftable desk according to claim 4, characterized in that: The driving member (38) comprises a pull rod (39), a handle (40) is fixedly mounted on one side of the pull rod (39), the other side of the pull rod (39) is fixedly connected to the tooth plate (37), a through hole (41) for the pull rod (39) to pass through is formed on the bearing block (4), and a spring (42) is fixedly mounted between the tooth plate (37) and the inner wall of the slide groove (5).

6. The liftable desk according to claim 1, characterized in that: There are two sliders (33), which are respectively arranged on both sides of the guide groove (32). When the table top (1) is positioned, the protruding teeth (36) on the two sliders (33) are in meshing state with the tooth plate (37).

7. The liftable desk according to claim 1, characterized in that: A table drawer (7) is fixedly mounted on the lower side of the table top (1), and the storage block (31) is fixedly mounted on the lower side of the table drawer (7).

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