CN214759707U - Table lifting mechanism - Google Patents

Abstract

The utility model discloses a desk lifting mechanism, which comprises an aluminum round tube, a screw rod arranged in the aluminum round tube and a gear box body arranged at the top of the screw rod, the top of the aluminum round tube is provided with a top cover connected with the screw rod in a screw way, the bottom of the screw rod is provided with a guide block sleeved in the aluminum round tube, the inner wall of the aluminum round pipe is provided with a guide strip, the guide block is provided with a guide groove corresponding to the guide strip, the top of the screw rod is connected with a first sector gear which is longitudinally arranged, a second sector gear which is transversely arranged and is meshed with the first sector gear is arranged in the gear box body, the top of the screw rod is connected with a first bearing, the lower part of the first sector gear is connected with a second bearing, the two ends of the second sector gear are both connected with third bearings, a ferrule is sleeved at the top of the screw rod, and a check ring is connected to the outer side of the ferrule. The utility model discloses the structure is firm, goes up and down smoothly, and the shake is little during the lift, has the automatic decline function of preventing.

Description

Table lifting mechanism

Technical Field

The utility model relates to a furniture accessory technical field, concretely relates to desk elevating system.

Background

Desk elevating system is one of the important accessories of lift desk, be used for the adjustment to the lift desk height, but the metal gear box that current desk elevating system adopted generally is straight gear structure, this kind of gear structure's metal gear box running noise is big, the cost of manufacture is high, go up and down unsmoothly, the lead screw transmission location sliding gap of current desk elevating system is big simultaneously, the shake is big when the desk goes up and down, whole effect experience is poor, can descend automatically when hand rising speed is fast, leading hand anticlockwise shakes and rotates and drives the gear box and rise. Therefore, there is a need for improvements in the prior art to avoid the disadvantages of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a table lifting mechanism with stable structure and smooth lifting.

The utility model discloses a realize through following technical scheme:

a desk lifting mechanism comprises an aluminum round pipe, a lead screw arranged in the aluminum round pipe and a gear box body arranged at the top of the lead screw, wherein a top cover connected with the lead screw in a threaded manner is arranged at the top of the aluminum round pipe, a guide block arranged in the aluminum round pipe is sleeved at the bottom of the lead screw, a guide strip is arranged on the inner wall of the aluminum round pipe, a guide groove corresponding to the guide strip is arranged on the guide block, a first sector gear longitudinally arranged is connected to the top of the lead screw, a second sector gear transversely arranged and engaged with the first sector gear is arranged in the gear box body, a first bearing is connected to the top of the lead screw, a second bearing is connected to the lower part of the first sector gear, third bearings are connected to the two ends of the second sector gear, and the first bearing, the second bearing and the third bearing are all sleeved on the inner side of the gear box body, the top cover of lead screw is equipped with a lasso, the outside of lasso is connected with a retaining ring, the top surface of retaining ring is the conical setting.

Further, the inner side of the guide block is sleeved with a lower bearing, and the bottom of the screw rod is connected with an inner ring of the lower bearing.

Further, the bottom of the aluminum round pipe is provided with a bottom cover.

Further, the gearbox body is a POM plastic gearbox body.

Furthermore, the gearbox housing comprises a front gearbox housing and a rear gearbox housing which are fixedly connected with the nuts through screws.

Further, a gasket which is propped against the first bearing is arranged at the top of the screw rod.

Furthermore, a positioning column is arranged at the top of the gear box body.

Furthermore, an inner hexagonal adjusting hole is formed in the outer side of the second sector gear.

Compared with the prior art, the utility model has the advantages that the top of the screw rod is connected with the first sector gear which is vertically arranged, the gear box body is internally provided with the second sector gear which is transversely arranged and meshed with the first sector gear, the operation noise of the gear box is small, the manufacturing cost is low, the lifting is smooth, the front hand can be rotated clockwise to drive the gear box body to ascend, the bottom of the screw rod is provided with the guide block which is sleeved in the aluminum round pipe, the inner wall of the aluminum round pipe is provided with the guide strip, the guide block is provided with the guide groove which corresponds to the guide strip, the transmission positioning sliding clearance of the screw rod is small, the side surface and the top part can be fixed in both directions, the table has small shaking when being lifted, the whole effect is good, the top sleeve of the screw rod is sleeved with a sleeve ring, the outer side of the sleeve ring is connected with a retaining ring, the top surface of the retaining ring is in a conical shape, when the lifting speed of the hand is accelerated, the retaining ring can prevent the gear box body from automatically descending, meanwhile, the aluminum round pipe and the spare and accessory parts in the gear box body are easy to assemble and disassemble, the assembly is simple and rapid, and the production efficiency is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a lifting mechanism of a desk of the present invention;

FIG. 2 is an exploded view of the lifting mechanism of the desk of the present invention;

fig. 3 is a longitudinal sectional view of the table lifting mechanism of the present invention.

In the figure: 1-aluminum round pipe; 2-a screw rod; 3-a gear box body; 4-a top cover; 5-a guide block; 6-a guide bar; 7-a guide groove; 8-a first sector gear; 9-a second sector gear; 10-a first bearing; 11-a second bearing; 12-a third bearing; 13-a ferrule; 14-a retainer ring; 15-lower bearing; 16-a bottom cover; 17-front gear box; 18-rear gearbox housing; 19-a gasket; 20-a positioning column; 21-inner hexagonal adjusting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 3, the table lifting mechanism of the present invention comprises an aluminum circular tube 1, a lead screw 2 installed in the aluminum circular tube 1, and a gear box 3 installed on the top of the lead screw 2, a top cover 4 screwed with the lead screw 2 is installed on the top of the aluminum circular tube 1, a set of guide block 5 installed in the aluminum circular tube 1 is installed on the bottom of the lead screw 2, a guide strip 6 is installed on the inner wall of the aluminum circular tube 1, a guide groove 7 corresponding to the guide strip 6 is installed on the guide block 5, a first sector gear 8 vertically arranged is connected to the top of the lead screw 2, a second sector gear 9 transversely arranged and engaged with the first sector gear 8 is installed in the gear box 3, a first bearing 10 is connected to the top of the lead screw 2, a second bearing 11 is connected to the lower portion of the first sector gear 8, third bearings 12 are connected to both ends of the second sector gear 9, the first bearing 10, the second bearing 11 and the third bearing 12 are all sleeved on the inner side of the gear box 3, the top cover of lead screw 2 is equipped with a lasso 13, and the outside of lasso 13 is connected with a retaining ring 14, and the top surface of retaining ring 14 is the conical setting. The top of the screw rod 2 is connected with a first sector gear 8 which is longitudinally arranged, a second sector gear 9 which is transversely arranged and meshed with the first sector gear 8 is arranged in the gear box body 3, so that the running noise of the gear box is low, the manufacturing cost is low, the lifting is smooth, the gear box body 3 can be driven to ascend by clockwise shaking through the front hand, a guide block 5 which is sleeved in an aluminum round pipe 1 is arranged at the bottom of the screw rod 2, a guide strip is arranged on the inner wall of the aluminum round pipe 1, the guide block 5 is provided with a guide groove 7 which corresponds to the guide strip 6, so that the sliding gap of the screw rod transmission positioning is small, the side surface and the top part can be fixed in both directions, the shaking is small when the desk is lifted, the whole effect is good, a ferrule 13 is sleeved on the top of the screw rod 2, the outer side of the ferrule 13 is connected with a retainer ring 14, the top surface of the retainer ring 14 is in a conical shape, when the rising speed of the hand shaking is accelerated, the retainer ring 14 can prevent the gear box body 3 from automatically descending, meanwhile, the aluminum round pipe 1 and the parts in the gear box body 3 are easy to assemble and disassemble, the assembly is simple and fast, and the production efficiency is high.

The inner side of the guide block 5 is sleeved with a lower bearing 15, and the bottom of the screw rod 2 is connected with the inner ring of the lower bearing 15, so that the screw rod 2 can rotate more stably.

The bottom of the aluminum round tube 1 is provided with a bottom cover 16, so that the table lifting mechanism can stand more stably.

The gear box body 3 is a POM plastic gear box body, and POM plastic is firm and durable, has good physical, mechanical and chemical properties and good friction resistance.

The gear box body 3 comprises a front gear box body 17 and a rear gear box body 18 which are fixedly connected through screws and nuts, and installation of spare parts in the gear box body 3 is facilitated.

The top of the screw rod 2 is provided with a gasket 19 which is propped against the first bearing 10, so that the first bearing 10 is prevented from being rubbed when rotating, and the first bearing 10 can rotate more smoothly.

The top of gear box 3 is equipped with reference column 20, makes things convenient for desk elevating system's location installation.

The outer side of the second sector gear 9 is provided with an inner hexagonal adjusting hole 21, which is beneficial to hand-cranking connection and can drive the second sector gear 9 to rotate more easily.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A desk elevating system which characterized in that: the lead screw and the gear box body are arranged at the top of the lead screw, the top cover is arranged at the top of the aluminum round pipe and connected with the lead screw in a threaded manner, the bottom of the lead screw is provided with a guide block which is arranged in the aluminum round pipe in a sleeved manner, the inner wall of the aluminum round pipe is provided with a guide strip, the guide block is provided with a guide groove corresponding to the guide strip, the top of the lead screw is connected with a first sector gear which is longitudinally arranged, a second sector gear which is transversely arranged and meshed with the first sector gear is arranged in the gear box body, the top of the lead screw is connected with a first bearing, the lower part of the first sector gear is connected with a second bearing, the two ends of the second sector gear are connected with third bearings, the first bearing, the second bearing and the third bearing are sleeved on the inner side of the gear box body, and the top of the lead screw is sleeved with a ferrule, the outer side of the ferrule is connected with a retainer ring, and the top surface of the retainer ring is arranged in a conical shape.

2. The table lift mechanism of claim 1, wherein: the inner side of the guide block is sleeved with a lower bearing, and the bottom of the screw rod is connected with the inner ring of the lower bearing.

3. The table lift mechanism of claim 1, wherein: and the bottom of the aluminum round pipe is provided with a bottom cover.

4. The table lift mechanism of claim 1, wherein: the gear box body is a POM plastic gear box body.

5. The table lift mechanism of claim 1, wherein: the gearbox body comprises a front gearbox body and a rear gearbox body which are fixedly connected through screws and nuts.

6. The table lift mechanism of claim 1, wherein: and a washer which is propped against the first bearing is arranged at the top of the screw rod.

7. The table lift mechanism of claim 1, wherein: and a positioning column is arranged at the top of the gear box body.

8. The table lift mechanism of claim 1, wherein: and the outer side of the second sector gear is provided with an inner hexagonal adjusting hole.

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