CN217683100U

CN217683100U - Lifting upright post

Info

Publication number: CN217683100U
Application number: CN202221139688.8U
Authority: CN
Inventors: 许金东; 刘涛; 王辉
Original assignee: Changzhou Kaidi Electrical Co Ltd
Current assignee: Changzhou Kaidi Electrical Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-10-28
Anticipated expiration: 2032-05-11
Also published as: WO2023217305A3; WO2023217305A2

Abstract

The utility model relates to a lifting stand column, inner tube subassembly and outer tube subassembly including power unit, nested connection, inner tube subassembly include the inner tube and fix the box portion in inner tube one end, and power unit sets up in box portion, is provided with pipe and lead screw subassembly in the inner tube subassembly, and power unit passes through coupling assembling drive pipe, and lead screw subassembly includes that lead screw and cover establish the screw nut on the lead screw, screw nut and pipe and inner tube connection, lead screw and screw nut screw-thread fit, and the one end of lead screw stretches into in the pipe, its other end is fixed in the outer tube subassembly, and the lead screw subassembly still includes the box body, and box body fixed connection is in the other end of inner tube, and the screw nut part or whole parcel are in the box body. The utility model avoids the distortion of the driving component caused by the traditional stress structure; due to the change of the stress structure, the round tube can be made of plastics, so that the use of metal materials is reduced, and the round tube can be made of plastics, thereby reducing the weight and lowering the cost; the assembly and disassembly of the parts are very convenient.

Description

Lifting upright post

Technical Field

The utility model relates to a lifting stand column.

Background

At present, the lifting upright column is generally two-section screw rod lifting upright column and three-section screw rod lifting upright column. Wherein, two sections lead screw lift stands are just put the structure and are put the structure two kinds upside down. The lift stand of current upright structure: chinese patent No. CN209977007U discloses a lifting column, which is a two-section driving mode, when the lifting column is lifted to the maximum distance, the overlap ratio of the sleeve and the screw rod is low, the middle position has no supporting point, and the sleeve and the screw rod are easy to twist. Another chinese patent publication No. CN113243661A discloses a two-section pipe lifting column, which is also a two-section driving mode, and when the column is lifted to the maximum distance, the same problem as the above patent occurs. The current lift stand of inverting structure: chinese patent No. CN214156517U discloses a connecting structure and a lifting column with the connecting structure, which is a lifting column with an inverted structure, and compared with the upright table legs, the inverted table legs have smaller overlap ratio and poorer stability on the premise of ensuring the same installation height and stroke.

On the premise of the same installation height, compared with the lifting upright column with the upright structure and the lifting upright column with the inverted structure, the contact ratio of the inner pipe and the outer pipe is higher, and the stability is better; but at present just putting the lift stand of structure, powerful transmission between its lead screw and the sleeve pipe, and the mid portion lacks corresponding support point, and this leads to just putting the lift stand and produce the vibration easily in the lift in-process, and just putting the drive assembly of structure and need riveting, and the dismouting of spare part is comparatively complicated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a lifting upright post.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a lifting column, includes power unit, nested connection's inner tube subassembly and outer tube subassembly, the inner tube subassembly includes the inner tube and fixes the box portion of inner tube one end, power unit set up in the box portion, be provided with pipe and lead screw subassembly in the inner tube subassembly, power unit passes through the coupling assembling drive the pipe, the lead screw subassembly includes lead screw and cover and establishes screw nut, box body on the lead screw, screw nut with the pipe non-circle is connected, the lead screw with screw nut screw-thread fit, the one end of lead screw is stretched into in the pipe, its other end is fixed in the outer tube subassembly, box body fixed connection in the other end of inner tube, screw nut part or whole parcel in the box body.

Lead screw nut and inner tube subassembly are fixed together through the box body, compromise simultaneously and fix a position the one end of solid lead screw, have guaranteed the stability of lift stand.

Further, the case body is integrated by connecting the cover and the case.

So set up, the installation of the lid and the box of being convenient for has reduced drive assembly's setpoint interval simultaneously, is favorable to drive assembly's stability.

Further, the cover and the case are fixedly coupled by a screw or a snap structure.

Furthermore, the cover is of a plate-shaped structure, and a round hole for the screw rod to pass through is formed in the center of the cover.

So set up, cover simple structure, easy operation.

Furthermore, the center of the box is provided with a through hole for the screw nut to partially pass through and a placing hole for accommodating the screw nut, and the end part of the placing hole is reamed to form a stepped hole.

The placing hole is used for placing the screw nut on one hand, and on the other hand, the placing hole and the cover can form a closed cavity for axial limiting of the screw nut.

Still further, the feed screw nut comprises a spline part and a flange edge positioned at one end of the spline part, and the outer diameter of the flange edge is smaller than the inner diameter of the placing hole and larger than the inner diameter of the passing hole.

Furthermore, the inner walls of the two ends of the circular tube are provided with internal splines, and the spline part of the lead screw nut is connected with the internal splines at one end of the circular tube in a non-circular mode through the holes.

Furthermore, the other end of pipe passes through splined connection with coupling assembling's one end, coupling assembling's the other end is connected with power unit, power unit includes motor and driving medium, the driving medium is connected to the motor, the driving medium is connected with coupling assembling.

Furthermore, a plurality of oil storage tanks are arranged on the peripheral wall of the flange edge of the feed screw nut.

The oil storage tank is arranged, so that the situation that clamping stagnation is generated when the screw rod nut moves is prevented.

Furthermore, a plurality of slotted holes are formed in the peripheral wall of the box, the punching and riveting piece and the through hole are arranged at the pipe opening of the inner pipe assembly, the box is fixed with the inner pipe assembly through the punching and riveting piece punching and entering the slotted holes, and/or the box penetrates through the through hole and is fixed with the inner pipe assembly through the pin shaft.

Further, the inner tube assembly is made of metal, the inner tube assembly and the outer tube assembly are made of round tubes, square tubes or other special tubes, and the round tubes are made of plastic materials.

Further, coupling assembling includes connecting piece and mount pad, the connecting piece part passes the mount pad, connecting piece one end with power unit cooperation, the other end is fixed in the pipe, the mount pad with box portion fixed connection becomes one.

Furthermore, the connecting assembly further comprises a self-locking spring, and the self-locking spring is fixedly connected with the mounting seat.

The atress of lift stand can transmit to the pipe wall of inner tube subassembly on, because the inner tube subassembly adopts the metal material, bears the load, has guaranteed the stability of lift stand, so the pipe can adopt the plastics material, and weight reduction cost again.

The utility model has the advantages that:

1. the cover body is fixed with the inner pipe assembly, and the stress of the lifting upright post is transferred to the pipe wall of the inner pipe assembly, so that the driving assembly is prevented from being distorted and deformed due to a traditional stress structure;

2. the use of metal materials is reduced, the use of the metal materials is reduced, the weight is reduced, and the cost is reduced;

3. because the inner pipe assembly of the lifting upright column is usually of a metal structure, and the inner diameter of the inner pipe is larger than that of the round pipe, the stability of the lifting upright column is better;

4. the punching rivet or pin shaft structure is fully utilized, and the assembly and disassembly of parts are very convenient.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is an assembly view of the present invention.

Fig. 2 is a longitudinal sectional view of fig. 1 assembled.

Fig. 3 is a schematic view of the connection between the middle lead screw, the lead screw nut and the box body of the present invention.

Fig. 4 is a schematic structural diagram of the middle lead screw nut of the present invention.

In the figure:

1. a power mechanism, 11, a motor, 12, a transmission piece,

2. connecting assembly, 21, connecting piece, 22, mounting seat,

3. inner tube assembly, 31, box part, 32, inner tube, 321, rivet sheet, 322, through hole,

4. the circular tube is a circular tube, and the circular tube is a circular tube,

5. screw rod assembly, 51 screw rod, 52 box, 521 through hole, 522 placing hole, 523 slotted hole, 53 screw rod nut, 531 spline part, 532 flange edge, 5321 oil storage tank, 54 cover, 541 round hole,

6. an outer tube assembly.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 and 2, a lifting column, inner tube subassembly 3 and outer tube subassembly 6 including power unit 1, nested connection, inner tube subassembly 3 includes inner tube 32 and fixes the box portion 31 in inner tube 32 one end, and power unit 1 sets up in box portion 31, is provided with pipe 4 and screw mandrel subassembly 5 in the inner tube subassembly 3, and power unit 1 drives through coupling assembling 2 pipe 4, screw mandrel subassembly 5 include lead screw 51 and cover and establish screw nut 53 on lead screw 51, and screw nut 53 is connected with 4 non-circles on the pipe, and lead screw 51 and screw nut 53 screw-thread fit, in lead screw 51's one end stretched into pipe 4, its other end was fixed in outer tube subassembly 6.

The screw rod assembly 5 further comprises a box body, the box body is fixedly connected to the other end of the inner pipe 32, and the screw rod nut 53 is partially or completely wrapped in the box body. Connecting assembly 2 includes connecting piece 21 and mount pad 22, and connecting piece 21 part passes mount pad 22, and connecting piece 21 one end cooperates with power unit 1, and the other end is fixed in pipe 4, mount pad 22 and box portion 31 fixed connection. The connection assembly further comprises a self-locking spring (not shown, as is known in the art) which is fixedly connected to the mounting seat 22.

Preferably, the case is formed by joining the cover 54 and the case 52, which may be integrally secured by a screw or snap fit arrangement. The cover 54 and the case 52 may be formed by injection molding, and coupling holes, snaps, slots, etc. may be formed according to the connection requirements. One of the lid 54 and the case 52 is of a plate-like structure and the other is of a case-like structure.

As shown in fig. 3, the cover 54 has a plate-like structure, and a circular hole 541 is formed at the center thereof for the screw rod 51 to pass through. The case 52 is centrally provided with a through hole 521 through which the lead screw nut 53 partially passes and a placing hole 522 which accommodates the lead screw nut 53, and the end of the placing hole 522 is bored as a stepped hole. The circumferential wall of the box 52 is provided with a plurality of slots 523, with reference to fig. 1, the pipe orifice of the inner pipe assembly 3 is provided with a punching and riveting sheet 321 and a through hole 322, the box 52 is punched into the slots 523 by the punching and riveting sheet 321 to be fixed with the inner pipe assembly 3, and/or the box 52 passes through the through hole 322 by a pin shaft to be fixed with the inner pipe assembly 3.

As shown in fig. 4, the feed screw nut 53 includes a spline portion 531 and a flange 532 at one end of the spline portion 531, and the flange 532 has an outer diameter smaller than the inner diameter of the placing hole 522 and larger than the inner diameter through the hole 521. Combine figure 1, the both ends inner wall of pipe 4 all is equipped with the internal spline, screw-nut 53's spline portion is crossed and is passed through the hole 521 and be connected with the internal spline non-circularity of 4 one ends of pipe, and the other end of pipe 4 passes through splined connection with the one end of arresting member 2, can know by figure 1, and the other end and the power unit 1 of arresting member 2 are connected, and power unit 1 includes motor 11 and driving medium 12, and motor 11 connects driving medium 12, and driving medium 12 is connected with coupling assembling 2. Of course, the motor 11 may also be directly connected to the connecting assembly 2, and the connecting assembly 2 may be any one of the components that can achieve the same function in the prior art.

In addition, a plurality of oil reservoirs 5321 are provided on the flange 532 of the feed screw nut 53.

The inner pipe assembly 3 is made of metal materials and can bear load, the inner pipe assembly 3 and the outer pipe assembly 6 are made of round pipes, square pipes or other special pipes, and the round pipes 4 are made of plastic materials.

The stress of the integral structure of the lifting upright column of the embodiment is as follows: when exerting force on outer tube assembly 6, outer tube assembly 6 then transmits through lead screw 51, with power conduction to screw nut 53, the effect of the flange 532 of screw nut 53 can receive the power, then with power transmission to box 54, because box 54 and inner tube assembly 3 have been fixed connection for a whole, box 54 will transmit the power to inner tube assembly 3 this moment, because inner tube assembly 3 adopts the metal material, so can bear this power, guarantee that whole lift stand is stable.

The specific working principle is as follows: the motor 11 rotates forwards, the connecting component 2 is driven to rotate through the transmission component 12, and then the round pipe 4 is driven to rotate, and due to the fact that the round pipe 4 is in threaded connection with the screw rod 5, one end of the screw rod 5 slowly extends downwards out of the round pipe 4, and meanwhile the outer pipe component 6 is driven to extend downwards, and the height of the lifting upright column is increased; the motor 11 reversal drives coupling assembling 2 through driving medium 12 and rotates, and then drives pipe 4 and rotate, because pipe 4 and 5 threaded connection of lead screw for 5 one ends of lead screw slowly indent pipe 4 downwards, drive outer tube subassembly 6 simultaneously and upwards receive, realize the highly diminishing of lift stand.

The embodiment is a lifting column with two sections of upright structures, and the lifting column with three sections of upright structures is also applicable to the related structure of the embodiment.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a lifting column, includes power unit (1), nested inner tube subassembly (3) and outer tube subassembly (6), inner tube subassembly (3) include inner tube (32) and fix box portion (31) of inner tube (32) one end, power unit (1) set up in box portion (31), its characterized in that: be provided with pipe (4) and lead screw subassembly (5) in inner tube subassembly (3), power unit (1) drives through coupling assembling (2) pipe (4), lead screw subassembly (5) include lead screw (51) and cover and establish lead screw nut (53), box body on lead screw (51), lead screw nut (53) with pipe (4) noncircular connection, lead screw (51) with lead screw nut (53) screw-thread fit, the one end of lead screw (51) is stretched into in pipe (4), its other end is fixed in outer tube subassembly (6), box body fixed connection in the other end of inner tube (32), lead screw nut (53) part or whole parcel in the box body.

2. The lifting column of claim 1, wherein: the box body is integrated by connecting a cover (54) and a box (52).

3. The lifting column of claim 1, wherein: the box body is provided with a cavity for accommodating a screw rod nut (53) and a through hole for penetrating a screw rod (51).

4. The lifting column of claim 2, wherein: the cover (54) and the box (52) are fixedly connected into a whole through a screw or a buckling structure.

5. The lifting column of claim 2, wherein: the cover (54) is of a plate-shaped structure, and the center of the cover is provided with a round hole (541) for the screw rod (51) to pass through.

6. The lifting column of claim 2, wherein: the box (52) is provided with a through hole (521) through which the lead screw nut (53) partially penetrates and a placing hole (522) for accommodating the lead screw nut (53) at the center, and the end of the placing hole (522) is reamed to form a stepped hole.

7. The lifting column of claim 6, wherein: the feed screw nut (53) comprises a spline part (531) and a flange edge (532) located at one end of the spline part (531), wherein the outer diameter of the flange edge (532) is smaller than the inner diameter of the placing hole (522) and larger than the inner diameter of the passing hole (521).

8. The lifting column of claim 7, wherein: the inner walls of the two ends of the circular tube (4) are provided with internal splines, and the spline part (531) of the screw rod nut (53) is connected with the internal splines at one end of the circular tube (4) in a non-circular mode through the hole (521).

9. The lifting column of claim 8, wherein: the other end of pipe (4) passes through splined connection with the one end of coupling assembling (2), the other end and power unit (1) of coupling assembling (2) are connected, power unit (1) includes motor (11) and driving medium (12), driving medium (12) is connected in motor (11), driving medium (12) are connected with coupling assembling (2).

10. The lifting column of claim 7, wherein: and a plurality of oil storage tanks (5321) are arranged on the flange edge (532) of the feed screw nut (53).

11. The lifting column of claim 6, wherein: the peripheral wall of the box (52) is provided with a plurality of slotted holes (523), the pipe orifice of the inner pipe assembly (3) is provided with a punching and riveting sheet (321) and a through hole (322), the box (52) is punched into the slotted hole (523) through the punching and riveting sheet (321) to be fixed with the inner pipe assembly (3), and/or the box (52) penetrates through the through hole (322) through a pin shaft to be fixed with the inner pipe assembly (3).

12. The lifting column of claim 1, wherein: the inner tube assembly (3) is made of metal, the inner tube assembly (3) and the outer tube assembly (6) are made of round tubes, square tubes or other special tubes, and the round tubes (4) are made of plastic.

13. The lifting column of claim 1, wherein: coupling assembling (2) are including connecting piece (21) and mount pad (22), connecting piece (21) part is passed mount pad (22), connecting piece (21) one end with power unit (1) cooperation, the other end are fixed in pipe (4), mount pad (22) with box portion (31) fixed connection.

14. The lifting column of claim 13, wherein: coupling assembling (2) still include the auto-lock spring, the auto-lock spring with mount pad (22) fixed connection.