Lifting type writing desk

Abstract

The utility model discloses a lifting type writing desk which comprises a desktop, lifting supporting mechanisms are arranged on the two sides of the lower end of the desktop, each supporting mechanism comprises a fixing block, a rotating shaft and a supporting rod, the fixing blocks are fixedly arranged at the lower end of the desktop, the number of the fixing blocks is four, and the fixing blocks are symmetrically arranged at the lower end of the desktop in pairs; a rotating shaft is movably arranged between the fixing blocks through a bearing, supporting rods are fixedly arranged on the two sides of the surface of the rotating shaft, and a clamping mechanism used for clamping and fixing the rotating shaft is arranged between the lower end of the table top and the rotating shaft. The lifting table is good in using effect, a traditional screw lifting mode is abandoned, so that a screw and a complex gear transmission mechanism can be omitted, meanwhile, compared with a traditional lifting table, the table legs of the lifting table can be completely folded, and therefore the occupied space for containing the whole lifting table can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of writing tables, in particular to a lifting type writing table. Background Art

[0002] In daily life, everyone uses a writing table. If the structural height of a daily study table is fixed, it will not be suitable for all people. For example, there will definitely be huge differences in the user experience of adults and children using the same height study table. For people of the same height, the requirements for the height of the table are also different. Some people are used to studying in a standard sitting posture, while others are used to studying in a relatively low sitting posture. Therefore, the height of the study table will affect the user experience to a certain extent.

[0003] Therefore, the height lifting function of the table is particularly important. At present, when the table in the prior art is lifted or lowered, most of them are achieved by making use of the table leg assembly made by the self-locking function of the screw. For example, the Chinese patent application No. 201621368429.7 is a lift-type study table. At this time, in order to ensure that the table can be lifted and lowered normally and prevent it from getting stuck, the screw cannot be only on one side of the table leg. Two screws are often required to ensure that the table legs on both sides can be lifted and lowered together. At this time, it is necessary to use a complex gear and connecting rod transmission mechanism to link the screws on both sides together, which leads to a complex structure of the entire device. In addition, in order to ensure the transmission accuracy, the screw and the gear must also ensure a high processing accuracy, which makes the original simple table cost more to install more expensive parts in order to be able to lift and lower. Therefore, an improved lift-type writing table is needed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting writing table to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a lifting writing table, comprising a desktop, both sides of the lower end of the desktop are provided with lifting support mechanisms, the support mechanisms include a fixed block, a rotating shaft, and a support rod, the lower end of the desktop is fixedly provided with a fixed block, and four fixed blocks are provided, two by two in a group symmetrically arranged at the lower end of the desktop, specifically, Figure 3 As shown, a rotating shaft is movably arranged between the fixed blocks via bearings, support rods are fixedly arranged on both sides of the rotating shaft surface, and a clamping mechanism for clamping and fixing the rotating shaft is arranged between the lower end of the table top and the rotating shaft.

[0006] Preferably, the locking mechanism comprises a cylindrical block, a first limit block, a second limit block, a mounting block, a connecting rod, and a limit frame, wherein one end of the rotating shaft is fixedly provided with a cylindrical block, the side of the cylindrical block away from the rotating shaft is fixedly provided with the first limit block, and the side of the rotating shaft away from the first limit block is fixedly provided with the second limit block, and the mounting block is fixedly provided in the middle of the lower end of the desktop, and a connecting rod is movably inserted inside the mounting block so that the connecting rod can slide left and right inside the mounting block, and the limiting frames are fixedly provided at both ends of the connecting rod, and the limiting frame is movably sleeved on the outer surfaces of the first limit block and the second limit block, and the first limit block and the second limit block can be locked and engaged by the locking mechanism, so that the rotating shaft cannot rotate, in this way, the rotation angle of the rotating shaft and the support rod can be fixed, so that the desktop height of the entire device can be fixed; and when the rotating shaft needs to be rotated to adjust the desktop height, the connecting rod is pushed so that the connecting rod and the limit frame move to the right, reference is made here Figure 3 , the limit frame on the right side can be directly separated from the second limit block, and the limit frame on the left side can be sleeved on the outer surface of the cylindrical block, and can also be separated from the first limit block. In this way, the first limit block and the second limit block lose their limits, so that the rotating shaft and the support rod can be rotated, so that the support rod can be supported at different angles, thereby changing the height of the desktop.

[0007] Preferably, the cross-section of the first limit block and the second limit block is a regular polygonal structure, that is, the first limit block and the second limit block can be a regular tetrahedron, a regular hexahedron, a regular octahedron or the like. The more faces there are, the more rotation limit gears there are for the support rod, and the more adjustable heights there are for the desktop. The specific polygon can be selected according to needs.

[0008] Preferably, a limiting ring is fixedly provided on the outer surface of the connecting rod, and a spring is sleeved on the outer surface of the connecting rod between the limiting ring and the mounting block, one end of the spring is fixedly connected to the limiting ring, and one end of the spring away from the limiting ring is fixedly connected to the mounting block, and the spring can automatically drive the connecting rod and the limiting frame to move to the left and reset.

[0009] Preferably, a support foot is movably provided at the lower end of the support rod via a pin, and the support foot provided via the pin enables the support foot to have a rotation function, so that no matter to which angle the support rod is rotated, the support foot can support the entire device vertically downward.

[0010] Preferably, a rubber pad is fixedly provided at the lower end of the support foot, and the rubber pad can increase the friction of the support foot, thereby improving the supporting and stabilizing effect of the support foot.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When the utility model adjusts the height, the connecting rod is pushed to make the connecting rod and the limit frame move to the right, so that the limit frame on the right side can be directly separated from the second limit block, and the limit frame on the left side will move and be sleeved on the outer surface of the cylindrical block, and at this time it will also be separated from the first limit block, so that the first limit block and the second limit block both lose their limits, so that the rotating shaft and the support rod can be rotated, so that the support rod is supported at different angles, so that the height of the desktop can be changed. In this way, the device abandons the traditional screw lifting method, thereby eliminating the need for a screw and a complex gear transmission mechanism to save costs.

[0013] After the utility model is adjusted to the target angle, the connecting rod is loosened, and the connecting rod can automatically reset to the left under the action of the spring, and drive the limit frame to be re-mounted on the outer surfaces of the first limit block and the second limit block, so that the rotating shaft is limited from both ends, thereby ensuring the stability of the limit.

[0014] The utility model also has a function that the table legs are completely foldable, which is not available in traditional lifting tables. The function is to rotate the shaft so that the support rod is parallel to the ground. Figure 1 As shown, the device can now be completely folded up, greatly reducing the space occupied by the device and making it easier to store. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a lifting writing table of the utility model;

[0016] Figure 2 This is a support view of a support rod of a lifting writing table of the utility model;

[0017] Figure 3 This is an overall structural view of a locking mechanism in a lifting writing table of the utility model;

[0018] Figure 4 This is a right shift view of a limit frame in a liftable writing table of the utility model;

[0019] Figure 5 This utility model is a lifting writing table Figure 2 Magnified view at A in the middle.

[0020] In the figure: 1, table top; 2, fixing block; 3, rotating shaft; 4, supporting rod; 5, cylindrical block; 6, first limiting block; 7, second limiting block; 8, mounting block; 9, connecting rod; 10, limiting frame; 11, limiting ring; 12, spring; 13, supporting foot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] See also Figure 1-5 The utility model provides a technical solution: a lifting writing table, including a desktop 1, both sides of the lower end of the desktop 1 are provided with lifting support mechanisms, the support mechanisms include a fixed block 2, a rotating shaft 3, and a support rod 4, the lower end of the desktop 1 is fixed with a fixed block 2, the fixed block 2 can be fixed to the lower end of the desktop 1 by welding or screws, the welding should take into account the material of the desktop 1, and can be selected according to needs, and four fixed blocks 2 are provided, two by two in a group, symmetrically arranged on the lower end of the desktop 1, and can be specifically as follows Figure 3 As shown, a rotating shaft 3 is movably arranged between the fixed blocks 2 via a bearing, and the rotating shaft 3 can rotate around itself between the fixed blocks 2. Support rods 4 are fixedly arranged on both sides of the surface of the rotating shaft 3, and a locking mechanism for locking the rotating shaft 3 and fixing it is arranged between the lower end of the desktop 1 and the rotating shaft 3.

[0023] The engaging mechanism includes a cylindrical block 5, a first limiting block 6, a second limiting block 7, a mounting block 8, a connecting rod 9, and a limiting frame 10. The cylindrical block 5 is fixedly arranged at one end of the rotating shaft 3, the first limiting block 6 is fixedly arranged at the side of the cylindrical block 5 away from the rotating shaft 3, and the second limiting block 7 is fixedly arranged at the side of the rotating shaft 3 away from the first limiting block 6. The mounting block 8 is fixedly arranged at the middle part of the lower end of the desktop 1, and the connecting rod 9 is movably interspersed inside the mounting block 8 so that the connecting rod 9 can slide left and right inside the mounting block 8. A limit frame 10 is fixedly provided at both ends, and the limit frame 10 is movably sleeved on the outer surfaces of the first limit block 6 and the second limit block 7. The first limit block 6 and the second limit block 7 can be locked and engaged through the locking mechanism, so that the rotating shaft 3 cannot rotate, so that the rotation angle of the rotating shaft 3 and the support rod 4 can be fixed, so that the height of the desktop 1 of the entire device can be fixed; and when it is necessary to rotate the rotating shaft 3 to adjust the height of the desktop 1, push the connecting rod 9, so that the connecting rod 9 and the limit frame 10 move to the right, here reference Figure 3, the right limit frame 10 can be directly separated from the second limit block 7, and the left limit frame 10 will be sleeved on the outer surface of the cylindrical block 5, and at this time it will also be separated from the first limit block 6, so that the first limit block 6 and the second limit block 7 both lose their limits, so that the rotating shaft 3 and the support rod 4 can be rotated, so that the support rod 4 is supported at different angles, thereby changing the height of the desktop 1; the cross-section of the first limit block 6 and the second limit block 7 is a regular polygonal structure, that is, the first limit block 6 and the second limit block 7 can be a regular tetrahedron, a regular hexahedron, a regular octahedron and other structures, the more the number of faces, the more the rotation limit gears of the support rod 4, and the more the adjustable height of the desktop 1; the specific multihedron can be selected according to needs; the outer surface of the connecting rod 9 is fixedly set There is a limiting ring 11, and a spring 12 is sleeved on the outer surface of the connecting rod 9 between the limiting ring 11 and the mounting block 8. One end of the spring 12 is fixedly connected to the limiting ring 11, and the end of the spring 12 away from the limiting ring 11 is fixedly connected to the mounting block 8. The spring 12 can automatically drive the connecting rod 9 and the limiting frame 10 to move to the left and reset; the lower end of the support rod 4 is movably provided with a support foot 13 through a pin shaft, and the support foot 13 set by the pin shaft makes the support foot 13 have a rotation function, so that no matter what angle the support rod 4 is rotated to, the support foot 13 can support the entire device vertically downward; the lower end of the support foot 13 is fixedly provided with a rubber pad, and the rubber pad can increase the friction of the support foot 13, thereby improving the supporting stability effect of the support foot 13.

[0024] Working principle: When using the device, the height of the entire desktop 1 is adjusted by the rotation angle of the rotating shaft 3 and the support rod 4. When adjusting, the connecting rod 9 is pushed to make the connecting rod 9 and the limit frame 10 move to the right, so that the limit frame 10 on the right side can be directly separated from the second limit block 7, and the limit frame 10 on the left side will move and be sleeved on the outer surface of the cylindrical block 5, and at this time it will also be separated from the first limit block 6, so that the first limit block 6 and the second limit block 7 both lose their limits, so that the rotating shaft 3 and the support rod 4 can be rotated, so that the support rod 4 is supported at different angles, so that the height of the desktop 1 can be changed. In this way, the device abandons the traditional screw lifting method, thereby eliminating the screw and complex gear transmission mechanism. The cost is reduced, and after adjusting to the target angle, the connecting rod 9 is released, and the connecting rod 9 can be automatically reset under the action of the spring 12, and drive the limit frame 10 to be re-mounted on the outer surfaces of the first limit block 6 and the second limit block 7, so that the rotation shaft 3 is limited from both ends, thereby ensuring the stability of the limit, and when the device is in use, the first limit block 6 and the second limit block 7 can be regular tetrahedrons, regular hexahedrons, regular octahedrons and other structures. The more faces there are, the more rotation limit gears of the support rod 4, and the more adjustable heights of the desktop 1; the specific several faces can be selected according to needs, and the device also has a function of completely folding the table legs that traditional lifting tables do not have. You only need to rotate the rotating shaft 3 to make the support rod 4 parallel to the ground, such as Figure 1 As shown, the device can be completely folded up at this time, which greatly reduces the space occupied by the device and is convenient for storage. This is the working principle of the lifting writing table of the utility model.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting writing table, comprising a tabletop (1), characterized in that: Both sides of the lower end of the desktop (1) are provided with support mechanisms that can be raised and lowered, and the support mechanisms include a fixed block (2), a rotating shaft (3), and a support rod (4). The lower end of the desktop (1) is fixedly provided with a fixed block (2), and four fixed blocks (2) are provided, which are symmetrically arranged in groups of two at the lower end of the desktop (1). A rotating shaft (3) is movably arranged between the fixed blocks (2) via a bearing, and support rods (4) are fixedly arranged on both sides of the surface of the rotating shaft (3). A clamping mechanism for clamping and fixing the rotating shaft (3) is provided between the lower end of the desktop (1) and the rotating shaft (3).

2. The liftable writing table according to claim 1, characterized in that: The engaging mechanism comprises a cylindrical block (5), a first limiting block (6), a second limiting block (7), a mounting block (8), a connecting rod (9), and a limiting frame (10); a cylindrical block (5) is fixedly arranged at one end of the rotating shaft (3); a first limiting block (6) is fixedly arranged at a side of the cylindrical block (5) away from the rotating shaft (3); a second limiting block (7) is fixedly arranged at a side of the rotating shaft (3) away from the first limiting block (6); a mounting block (8) is fixedly arranged at the middle part of the lower end of the table top (1); a connecting rod (9) is movably inserted inside the mounting block (8) so that the connecting rod (9) can slide left and right inside the mounting block (8); limiting frames (10) are fixedly arranged at both ends of the connecting rod (9); and the limiting frames (10) are movably sleeved on the outer surfaces of the first limiting block (6) and the second limiting block (7).

3. The liftable writing table according to claim 2, characterized in that: The cross-sections of the first limiting block (6) and the second limiting block (7) are regular polygonal structures.

4. The liftable writing table according to claim 2, characterized in that: A limiting ring (11) is fixedly arranged on the outer surface of the connecting rod (9); a spring (12) is sleeved on the outer surface of the connecting rod (9) between the limiting ring (11) and the mounting block (8); one end of the spring (12) is fixedly connected to the limiting ring (11); and one end of the spring (12) away from the limiting ring (11) is fixedly connected to the mounting block (8).

5. The liftable writing table according to claim 1, characterized in that: A support foot (13) is movably provided at the lower end of the support rod (4) via a pin.

6. The liftable writing table according to claim 5, characterized in that: A rubber pad is fixedly provided at the lower end of the support foot (13).

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