Lifting type study desk

Abstract

The utility model provides a lifting type study desk, and belongs to the technical field of desks. The lifting learning table solves the problems that an existing lifting learning table is generally only provided with one or two table legs, when the area of a table board is large, the supporting mode of the two table legs is not stable, and the table board can incline and shake. The table comprises a supporting assembly and a table board arranged on the supporting assembly, the supporting assembly comprises a fixed supporting foot and a movable supporting foot, the movable supporting foot is movably arranged on the fixed supporting foot in the vertical direction, and the table board is fixedly arranged on the movable supporting foot; the number of the supporting assemblies is four, and a lifting connecting structure is arranged between the fixed supporting foot and the movable supporting foot of each supporting assembly. The lifting mechanism has the advantages that the two first transmission gears or the two second transmission gears are connected through the transmission shaft between every two adjacent supporting assemblies to enable the two first transmission gears or the two second transmission gears to rotate synchronously, the second transmission gears drive the first transmission gears meshed with the second transmission gears to rotate, and therefore synchronous lifting of the four sets of movable supporting feet is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of desks and relates to a lifting study desk. Background Art

[0002] At present, there are many lifting study desks on the market, and the height of the tabletop is adjusted by adjusting the length of the table legs. Generally, such study desks include a support assembly and a tabletop arranged on the support assembly. The support assembly includes a fixed support leg and a movable support leg. The movable support leg is movably arranged on the fixed support leg in the vertical direction, and the tabletop is fixedly arranged on the movable support leg. By adjusting the height of the movable support leg relative to the fixed support leg, the height of the tabletop is adjusted.

[0003] A common adjustment method is to provide a plurality of vertically spaced threaded holes on the movable support leg and a jack on the fixed support leg. By lifting the tabletop, the position of the jack corresponds to the position of one of the threaded holes, and a fastener or a handle passes through the jack and is screwed and fixed with the threaded hole, so as to adjust the height of the tabletop.

[0004] This adjustment method is not only time-consuming and laborious to operate, and the height of each table leg needs to be fixed separately, but also difficult for children to operate independently, and the adjustment method is complex and cumbersome.

[0005] For the existing liftable study desks of this kind, generally there is only one or two table legs. When the area of the tabletop is large, the support method of the two table legs is unstable. When there are too many or too heavy items placed on the tabletop, the tabletop will tilt and shake. Content of the Utility Model

[0006] The purpose of the utility model is to provide a study desk which is convenient to adjust and the height of each table leg can be adjusted synchronously aiming at the above problems existing in the existing liftable study desks.

[0007] The purpose of the utility model can be realized by the following technical solutions:

[0008] A lifting study desk includes a support assembly and a tabletop arranged on the support assembly. The support assembly includes a fixed support leg and a movable support leg. The movable support leg is movably arranged on the fixed support leg in the vertical direction, and the tabletop is fixedly arranged on the movable support leg;

[0009] It is characterized in that there are four groups of support assemblies in total. A lifting connection structure is arranged between the fixed support leg and the movable support leg of each group of support assemblies. The lifting connection structure includes a lead screw rotatably arranged in the movable support leg, a nut fixedly connected with the fixed support leg, a lower bevel gear fixedly connected with the lead screw, and a first transmission bevel gear horizontally rotatably arranged on the movable support leg. The first transmission bevel gear meshes with the lower bevel gear to drive the lead screw to rotate and drive the movable support leg to lift;

[0010] A transmission connection structure is provided between two adjacent groups of support components. The transmission connection structure includes a transmission shaft and a second transmission bevel gear horizontally and rotatably arranged on the movable support leg. Both ends of the transmission shaft are fixedly connected to the first transmission bevel gear or the second transmission bevel gear on two adjacent groups of support components respectively;

[0011] A handle is further provided on one of the groups of support components. The handle is rotatably arranged on the movable support leg of the support component and fixedly connected to the first transmission bevel gear. Rotating the handle drives the first transmission bevel gear, the lower bevel gear and the lead screw to rotate so as to drive the movable support leg to lift and lower. At the same time, the first transmission bevel gear on the other three groups of support components is synchronously driven to rotate through the transmission shaft, so that the four movable support legs lift and lower synchronously.

[0012] In the above-mentioned lifting study desk, a mounting seat is fixedly provided at the top of the movable support leg. The first transmission bevel gear, the second transmission bevel gear and the lower bevel gear are rotatably arranged on the mounting seat.

[0013] In the above-mentioned lifting study desk, the movable support leg is a hollow square tube, and the movable support leg is sleeved on the outer periphery of the fixed support leg.

[0014] In the above-mentioned lifting study desk, the fixed support legs are grouped in pairs of two. A horizontal tube is connected between the two left fixed support legs and between the two right fixed support legs respectively. A 90° elbow is connected between the vertical fixed support leg and the horizontal tube.

[0015] In the above-mentioned lifting study desk, among the four movable support legs, a connecting tube is fixedly provided between two of the movable support legs. A reverse U-shaped frame structure is formed by enclosing the four groups of support components and the connecting tube. The open end of the U-shaped frame structure serves as the seating opening for the user.

[0016] In the above-mentioned lifting study desk, only the first transmission bevel gear and the lower bevel gear are provided on the support components on the left and right sides of the seating opening, and the first transmission bevel gear, the second transmission gear and the lower bevel gear are provided on the other two support components.

[0017] In the above-mentioned lifting study desk, the first transmission bevel gear on the support components on the left and right sides of the seating opening is fixedly connected to the first transmission bevel gear on the adjacent support component through a transmission shaft, and the two second transmission bevel gears on the other two groups of support components are fixedly connected through a transmission shaft.

[0018] In the above-mentioned lifting study desk, the transmission shaft on one of the support components on the left and right sides of the seating opening extends outward through the first transmission bevel gear to form an extended section, and the handle is fixedly provided at the end of the extended section.

[0019] In the above-mentioned lifting study desk, the transmission shaft has a non-circular cross-sectional shape, and mounting holes are provided on the first transmission bevel gear and the second transmission bevel gear. The cross-sectional shape of the mounting hole is adapted to the cross-sectional shape of the transmission shaft.

[0020] Compared with the prior art, the utility model drives the lead screw to rotate through the lower bevel gear, so as to drive the lead screw and the movable support leg to lift. The lower bevel gear in each support assembly is driven by the first transmission gear. Between two adjacent support assemblies, the two first transmission gears are connected by a transmission shaft to rotate synchronously, and the two second transmission gears are connected by another transmission shaft to rotate synchronously, and the second transmission gear drives the first transmission gear meshed with it to rotate, so as to realize the synchronous lifting of the four groups of movable support legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the lifting study desk of the utility model;

[0022] Figure 2 is a schematic diagram of the structure of the support assembly of the utility model;

[0023] Figure 3 is an enlarged schematic diagram of the internal structure of the mounting seat of one of the support assemblies of the utility model;

[0024] Figure 4 is a schematic diagram of the transmission relationship between the first transmission bevel gear, the second transmission bevel gear and the lower bevel gear of the utility model;

[0025] Figure 5 is an enlarged schematic diagram of the support assembly of the utility model.

[0026] In the figure, 1, table board; 2, fixed support leg; 3, movable support leg; 4, lead screw; 5, first transmission bevel gear; 6, lower bevel gear; 7, second transmission bevel gear; 8, handle; 9, transmission shaft; 10, mounting seat; 11, horizontal pipe; 12, 90° elbow; 13, connecting pipe; 14, extension section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following are specific embodiments of the utility model and in conjunction with the drawings, the technical solutions of the utility model are further described, but the utility model is not limited to these embodiments.

[0028] As Figure 1 shown, a lifting study desk of the utility model includes a support assembly and a table board 1 arranged on the support assembly. The support assembly includes a fixed support leg 2 and a movable support leg 3. The movable support leg 3 is movably arranged on the fixed support leg 2 in the vertical direction, and the table board 1 is fixedly arranged on the movable support leg 3.

[0029] As Figures 2 to 4As shown in the figure, there are four groups of support components. Between the fixed support feet 2 and the movable support feet 3 of each group of support components, there is a lifting connection structure. This lifting connection structure includes a lead screw 4 rotatably arranged in the movable support foot 3, a nut fixedly connected to the fixed support foot 2, a lower bevel gear 6 fixedly connected to the lead screw 4, and a first drive bevel gear 5 horizontally rotatably arranged on the movable support foot 3. The first drive bevel gear 5 meshes with the lower bevel gear 6 to drive the lead screw 4 to rotate and drive the movable support foot 3 to lift. Between two adjacent groups of support components, there is a transmission connection structure. This transmission connection structure includes a transmission shaft 9 and a second drive bevel gear 7 horizontally rotatably arranged on the movable support foot 3. The two ends of the transmission shaft 9 are respectively fixedly connected to the first drive bevel gear 5 or the second drive bevel gear 7 on two adjacent groups of support components;

[0030] On one of the groups of support components, there is also a handle 8. The handle 8 is rotatably arranged on the movable support foot 3 of this support component and is fixedly connected to the first drive bevel gear 5. Rotating the handle 8 drives the first drive bevel gear 5, the lower bevel gear 6, and the lead screw 4 to rotate to drive the movable support foot 3 to lift. At the same time, through the transmission shaft 9, the first drive bevel gears 5 on the other three groups of support components are synchronously driven to rotate, so that the four movable support feet 3 are synchronously lifted and lowered. A mounting seat 10 is fixedly provided at the top of the movable support foot 3. The first drive bevel gear 5, the second drive bevel gear 7, and the lower bevel gear 6 are rotatably arranged on this mounting seat 10.

[0031] The transmission shaft 9 has a non-circular cross-sectional shape. Mounting holes are provided on the first drive bevel gear 5 and the second drive bevel gear 7. The cross-sectional shape of the mounting holes is adapted to the cross-sectional shape of the transmission shaft 9. The cross-sectional shape of the transmission shaft 9 includes a regular polygon, a semi-circle, etc. In this embodiment, the cross-sectional shape of the transmission shaft 9 is a regular hexagon.

[0032] As Figure 5 shown, the movable support foot 3 is a hollow square tube, and the movable support foot 3 is sleeved on the outer periphery of the fixed support foot 2. The fixed support feet 2 are grouped in pairs. Between the two left fixed support feet 2 and between the two right fixed support feet 2, they are both connected by a horizontal tube 11. Between the vertical fixed support feet 2 and the horizontal tube 11, they are connected by a 90° elbow 12. Among the four movable support feet 3, a connecting tube 13 is fixedly provided between two of the movable support feet 3. A U-shaped frame structure is formed by enclosing the four groups of support components and this connecting tube 13. The open end of the U-shaped frame structure serves as the seating entrance for the user.

[0033] On the support components on both the left and right sides of the seating inlet, only the first transmission bevel gear 5 and the lower bevel gear 6 are provided, and on the remaining two support components, the first transmission bevel gear 5, the second transmission gear, and the lower bevel gear 6 are all provided. The first transmission bevel gear 5 on the support components on both the left and right sides of the seating inlet is fixedly connected to the first transmission bevel gear 5 on the adjacent support component through the transmission shaft 9, and the two second transmission bevel gears 7 on the remaining two groups of support components are fixedly connected through the transmission shaft 9. The transmission shaft 9 on one of the support components on both the left and right sides of the seating inlet extends outward after passing through the first transmission bevel gear 5 to form an extended section 14, and the handle 8 is fixedly arranged at the end of the extended section 14.

[0034] The adjustment method of the present utility model is as follows:

[0035] Starting from the support component where the handle 8 is installed as the starting end, along the U-shaped frame structure route, it is successively divided into the first support component, the second support component, the third support component, and the fourth support component. Rotate the handle 8 to drive the first transmission bevel gear 5 in the first support component to rotate. The first transmission bevel gear 5 drives the lower bevel gear 6 and the lead screw 4 to rotate, thereby driving the movable support feet 3 of the first support component to rise and fall;

[0036] At the same time, the transmission shaft 9 fixedly connected to the handle 8 drives the first transmission bevel gear 5 in the second support component to rotate, thereby realizing synchronous lifting and lowering of the movable support feet 3 of the second support component;

[0037] At the same time, the first transmission bevel gear 5 in the second support component drives the second transmission bevel gear 7 to rotate. The second transmission bevel gear 7 is fixedly connected to and drives the second transmission bevel gear 7 in the third support component through the transmission shaft 9, thereby realizing synchronous lifting and lowering of the movable support feet 3 of the third support component;

[0038] At the same time, the first transmission bevel gear 5 in the third support component is fixedly connected to and drives the first transmission bevel gear 5 in the fourth support component through the transmission shaft 9, thereby realizing synchronous lifting and lowering of the movable support feet 3 of the fourth support component.

[0039] It should be understood that in the claims and the description of the present utility model, all "including..." should be understood in an open sense, that is, its meaning is equivalent to "at least containing...", rather than in a closed sense, that is, its meaning should not be understood as "only containing...".

[0040] The specific embodiments described herein are only illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A lifting study table, comprising a support assembly and a table top (1) arranged on the support assembly, wherein the support assembly comprises a fixed support leg (2) and a movable support leg (3), wherein the movable support leg (3) is movably arranged on the fixed support leg (2) in a vertical direction, and the table top (1) is fixedly arranged on the movable support leg (3); It is characterized in that There are four groups of support assemblies, and a lifting connection structure is provided between the fixed support leg (2) and the movable support leg (3) of each group of support assemblies. The lifting connection structure comprises a screw rod (4) rotatably arranged in the movable support leg (3), a nut fixedly connected to the fixed support leg (2), a lower bevel tooth (6) fixedly connected to the screw rod (4), and a transmission bevel tooth (5) rotatably arranged on the movable support leg (3). The transmission bevel tooth (5) is meshed with the lower bevel tooth (6) to drive the screw rod (4) to rotate and drive the movable support leg (3) to lift and lower. A transmission connection structure is provided between two adjacent groups of support assemblies, the transmission connection structure comprising a transmission shaft (9), a transmission bevel gear 2 (7) horizontally rotatably arranged on a movable support foot (3), and two ends of the transmission shaft (9) are respectively fixedly connected to the transmission bevel gear 1 (5) or the transmission bevel gear 2 (7) on the two adjacent groups of support assemblies; One of the supporting components is also provided with a handle (8), which is rotatably arranged on the movable supporting foot (3) of the supporting component and is fixedly connected to the transmission bevel gear one (5). The handle (8) is rotated to drive the transmission bevel gear one (5), the lower bevel gear (6) and the screw rod (4) to rotate so as to drive the movable supporting foot (3) to rise and fall. At the same time, the transmission bevel gear one (5) on the other three supporting components is synchronously driven to rotate through the transmission shaft (9), so that the four movable supporting feet (3) are synchronously raised and lowered.

2. A lifting study table according to claim 1, characterized in that: A mounting seat (10) is fixedly provided on the top of the movable support foot (3), and the transmission bevel gear 1 (5), the transmission bevel gear 2 (7) and the lower bevel gear (6) are rotatably arranged on the mounting seat (10).

3. The liftable study table according to claim 1, characterized in that: The movable support leg (3) is a hollow square tube, and the movable support leg (3) is sleeved on the outer circumference of the fixed support leg (2).

4. The liftable study table according to claim 1, characterized in that: The fixed legs (2) are arranged in pairs, and the two fixed legs (2) on the left and the two fixed legs (2) on the right are connected by a transverse tube (11), and the vertical fixed legs (2) and the horizontal transverse tube (11) are connected by a 90° elbow (12).

5. The liftable study table according to claim 1, characterized in that: Among the four movable supporting legs (3), a connecting pipe (13) is fixedly arranged between two of the movable supporting legs (3), and the four groups of supporting components and the connecting pipe (13) are combined to form an inverted U-shaped frame structure, and the open end of the U-shaped frame structure serves as a seat entrance for users.

6. The liftable study table according to claim 5, characterized in that: The support components on the left and right sides of the seat entrance are only provided with a transmission bevel gear 1 (5) and a lower bevel gear (6), and the other two support components are both provided with a transmission bevel gear 1 (5), a transmission gear 2 and a lower bevel gear (6).

7. The liftable study table according to claim 6, characterized in that: The transmission bevel gear 1 (5) on the support components on the left and right sides of the seat entrance is fixedly connected to the transmission bevel gear 1 (5) on the adjacent support component via a transmission shaft (9), and the two transmission bevel gear 2 (7) on the remaining two groups of support components are fixedly connected via a transmission shaft (9).

8. The liftable study table according to claim 5, characterized in that: A transmission shaft (9) on one of the support components on the left and right sides of the seat entrance passes through the transmission bevel gear (5) and then extends outward to form an extension section (14), and a handle (8) is fixedly arranged at the end of the extension section (14).

9. The liftable study table according to claim 1, characterized in that: The transmission shaft (9) has a non-circular cross-sectional shape, and mounting holes are provided on the first transmission bevel gear (5) and the second transmission bevel gear (7), and the cross-sectional shape of the mounting holes is compatible with the cross-sectional shape of the transmission shaft (9).

Images