CN211833315U

CN211833315U - Device for improving telescopic stability of table legs

Info

Publication number: CN211833315U
Application number: CN201922310827.3U
Authority: CN
Inventors: 吴金虎
Original assignee: Tct Nanotec Co ltd
Current assignee: Tct Nanotec Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-11-03
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a device for improving the extension stability of table legs, which comprises an outer tube, an inner tube, a base and a plurality of rollers. The outer tube is a hollow tubular body. One end of the inner tube is inserted into the outer tube, and the tail end of the inner tube is symmetrically provided with a movable groove. The base is fixed in the inner tube corresponding to each movable groove and has a plurality of wheel grooves. Each roller is pivoted with the base and is contained in each wheel groove, and the local protrusion is abutted with the inner diameter surface of the outer pipe. The telescopic action of the inner and outer pipes can be more stable by the components, and the tolerance requirement of the production of the inner and outer pipes can be reduced.

Description

Device for improving telescopic stability of table legs

Technical Field

The utility model relates to the technical field related to lifting tables, in particular to a device for improving the telescopic stability of table legs.

Background

The table leg structure of the lifting table between the workshops roughly comprises an inner pipe and an outer pipe which are sleeved and connected with each other, and the length of the inner pipe extending out of the outer pipe is positioned by matching with a positioning component, so that the height of a table top locked and connected with the inner pipe is lifted.

In the prior art, the inner and outer pipes which are sleeved and connected with each other need to move mutually, so a certain gap is required to be reserved, and in addition, the inner and outer pipes are produced by an extrusion method, so the production tolerance is originally large, and the accumulated tolerance is the same;

if the tolerance is negative, the expansion and contraction process of the inner and outer tubes is very urgent, and the smooth expansion and contraction cannot be maintained, and mutual abrasion is often caused. Therefore, the surfaces of the inner pipe and the outer pipe can only be ground to enlarge the gap, but the rigidity of the ground inner pipe and outer pipe is inevitably reduced, and potential risks are formed.

If the tolerance is positive, the overlarge gap between the inner pipe and the outer pipe leads the offset angle of the inner pipe and the outer pipe to be large in the process of telescopic action, so that the blocking of the offset angle is easy to form, and the lifting is not smooth.

SUMMERY OF THE UTILITY MODEL

In view of the above problems and disadvantages of the prior art, the primary objective of the present invention is to provide an improved device for the extension stability of a table leg, which is designed to make the process of the extension operation of the inner and outer tubes smooth and stable.

According to the above object of the present invention, an improved device for the extension stability of table legs is provided, which comprises:

an outer tube which is a hollow tubular body;

one end of the inner pipe is inserted and contained from the top end of the outer pipe, and the tail end of the inner pipe is provided with a plurality of movable grooves which are symmetrically arranged on the pipe wall of the inner pipe;

a base, which is fixedly arranged in the inner tube corresponding to each movable groove and is provided with a plurality of wheel grooves which are matched with each movable groove and are respectively formed on the outer side surface of the base in a concave manner; and

a plurality of rollers, which are respectively pivoted with the base and accommodated in the wheel grooves, and the outer peripheral side of each roller partially protrudes from each movable groove to the inner pipe and is abutted with the inner diameter surface of the outer pipe.

Preferably, the inner tube has a pin hole; the base is provided with a pin-joint hole concentric with the pin hole and is matched with a pin piece to penetrate and extend to fix the base on the inner pipe.

Preferably, the base has a plurality of shaft holes for each roller to be pivotally connected to the base in cooperation with a wheel axle.

Preferably, the outer periphery of the base has a plurality of abutting portions matching with the local contour of the inner diameter surface of the inner tube and forming a close fit therewith.

Preferably, the outer tube is connected with a foot base at the other end sleeved with the inner tube.

Preferably, the other end of the inner tube, which is different from the outer tube, is connected with a lock seat.

Preferably, the other end of the inner tube, which is different from the outer tube, is connected with a table top.

Preferably, the bottom end of the base extends horizontally and symmetrically outward to form a plurality of limiting protrusions, and the limiting protrusions are abutted to the section of one end of the inner tube.

Preferably, a pipe sleeve is sleeved between the inner pipe and the outer pipe, and the pipe sleeve has a pipe sleeve portion and a pipe buckling portion which is arranged along the outer peripheral side of the pipe sleeve portion and buckles the cross section of the outer pipe.

Preferably, the pipe sleeve part is provided with a pipe boss, and the pipe wall of the outer pipe is provided with a matched limiting hole.

The utility model has the advantages that:

the telescopic action of the inner and outer pipes can be more stable by the components, and the tolerance requirement of the production of the inner and outer pipes can be reduced.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a partial component schematic view of the embodiment of FIG. 1.

FIG. 3 is a cross-sectional view of the embodiment A-A shown in FIG. 2.

FIG. 4 is a cross-sectional view of the embodiment B-B shown in FIG. 2.

FIG. 5 is a partially exploded and cross-sectional view of the embodiment of FIG. 2.

FIG. 6 is a partial component schematic view of the embodiment of FIG. 5.

Names corresponding to the marks in the figure:

10 … outer tube element

12 … foot stool

14 … outer tube

142 … limiting hole

20 … inner tube unit

22 … lock base

24 … inner pipe

242 … movable groove

244 … pinhole

30 … base

31 … working hole

32 … abutment

33 … pivot hole

34 … axle hole

35 … wheel groove

36 … limiting convex part

40 … roller

42 … axle

50 … pipe sleeve

52 … pipe buckle part

54 … pipe sleeve part

56 … pipe boss

T … desktop.

Detailed Description

The following will refer to the related drawings to further illustrate the embodiment of the device for improving the extension stability of the table leg of the present invention. For the convenience of understanding the embodiments of the present invention, the same reference numerals are used for the same parts in the following description.

Referring to fig. 1 to 6, the device for improving the telescopic stability of the table leg of the present invention includes an outer tube unit 10, an inner tube unit 20, a base 30, two rollers 40 and a sleeve 50.

The outer tube unit 10 includes a base 12 and an outer tube 14.

The foot 12 (prior art) is connected to one end of the outer tube 14 for abutting against a support surface (e.g., the ground). In practice, it may be optionally omitted.

The outer tube 14 is a hollow tubular body with a predetermined length and profile, and has a limiting hole 142 formed through the outer tube 14.

The inner tube unit 20 includes a lock housing 22 and an inner tube 24.

The locking seat 22 is disposed at the top end of the inner tube 24 and provides a locking connection with a desktop T.

The inner tube 24, which is inserted and received from the top end of the outer tube 14 at the other end different from the lock seat 22, is a hollow tubular body with a predetermined length and profile, and has two movable slots 242 and a pin hole 244.

The movable grooves 242 are symmetrically disposed on the other end section of the inner tube 24, which is different from the lock seat 22.

The pin hole 244 is formed through the wall of the other end of the different lock seat 22 of the inner tube 24 and is perpendicular to the position of each movable slot 242.

The base 30 is inserted into the end of the inner tube 24 corresponding to the pin hole 244, and has a plurality of working holes 31, a plurality of abutting portions 32, a pivot hole 33, a shaft hole 34, two wheel slots 35, and two limit protrusions 36.

The working holes 31 are formed by penetrating the base 30 from top to bottom, so as to reduce the weight of the base 30 and facilitate the assembly operation by the penetration of a preset tool.

The abutting portions 32 are formed on the outer peripheral side of the base 30 so as to match the local contour of the inner diameter surface of the inner tube 24, and are in close fit with the inner diameter surface of the inner tube 24. In practice, the abutting portions 32 are arranged in a cross.

The pivot hole 33 is formed through the base 30 by a pin hole 244 of the concentric inner tube 24 and communicates with the matching working hole 31. In practice, the base 30 is assembled in the inner tube 24 by engaging the pin member P through the pin hole 244 and the pivot hole 33.

The axial hole 34 is formed through the base 30 in a manner to match the movable groove 242 of the inner tube 24, and communicates with the matched working hole 31.

The wheel grooves 35 are movable grooves 242 that are matched with the inner tube 24, are recessed in the outer side surfaces of the base 30 (the abutting ends 32) and are symmetrical with the matched working holes 31.

The limiting protrusions 36 are formed by extending horizontally and outwardly from the bottom end of the predetermined outer end surface of the base 30 (abutting end 32) to abut against the end cut surface of the inner tube 24.

The roller 40 is pivotally disposed on the base 30 in cooperation with the axle 42 through the axle hole 34 and is accommodated in the wheel groove 35, and the outer peripheral side of the roller 40 partially protrudes from the movable groove 242 to the inner tube 24 and abuts against the inner diameter surface of the outer tube 14. In practice, the rollers 40 may be selected from rigid wheels or flexible wheels.

The sleeve 50 is a hollow tubular body having a buckle portion 52, a sleeve portion 54 and a tubular rib 56.

The tube fastening portion 52 is formed along an outer side surface of one end of the tube housing portion 54 and extends radially outward to fasten against a cut surface of a predetermined end of the outer tube 14.

The sleeve portion 54 is received within the outer tube 14 to match the inner diameter profile of the outer tube 14 and provides for the inner tube 24 to extend therethrough. In practice, the cross-section of the sleeve portion 54 may be a closed annular profile, or an open annular profile resembling a C-shape.

The tube boss 56 is formed in the tube housing portion 54 to be inserted into the stopper hole 142, and is matched with the stopper hole 142 of the outer tube 14.

The above is the description of the improved device for the telescopic stability of the table legs and the assembly method provided by the present invention, and the actuation characteristics of the embodiment of the present invention are described as follows.

Referring to fig. 1 to 6, when the inner tube 24 moves up and down along the outer tube 14, the roller 40 abuts against the inner diameter surface of the outer tube 14 with a predetermined pressure, so that the inner tube 24 can be smoothly extended and retracted.

In addition, the roller 40 (axle 42) can be matched with lubricating oil with high viscosity to be used as damping, so that the phenomenon that the load of the table top T slides down quickly to cause danger in the adjusting process of the inner pipe 24 is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the embodiments of the present invention, which is intended to cover all equivalent variations, modifications, and equivalents of the present invention, which would be obvious to those skilled in the art, and which are within the scope of the present invention.

Claims

1. Device is improved to flexible stability of table foot, its characterized in that includes:

an outer tube which is a hollow tubular body;

2. The device for improving the telescopic stability of a table leg as claimed in claim 1, wherein the inner tube has a pin hole; the base is provided with a pin-joint hole concentric with the pin hole and is matched with a pin piece to penetrate and extend to fix the base on the inner pipe.

3. The device for improving the telescopic stability of a table leg as claimed in claim 1, wherein the base has a plurality of shaft holes for providing the rollers to be pivotally connected to the base respectively in cooperation with a wheel shaft.

4. A device for improving the telescopic stability of a table leg as claimed in claim 1, wherein the outer periphery of the base has a plurality of abutting portions matching and forming a close fit with the local contour of the inner diameter surface of the inner tube.

5. The device for improving the telescopic stability of the table legs as claimed in claim 1, wherein the outer tube is connected with a leg base at the other end sleeved with the inner tube.

6. The device for improving the telescopic stability of the table legs as claimed in claim 1, wherein the other end of the inner tube, which is different from the end of the outer tube, is connected with a lock seat.

7. The device for improving the telescopic stability of the table legs as claimed in claim 1, wherein the other end of the inner tube, which is different from the end of the outer tube, is connected with a table top.

8. The device for improving the telescopic stability of the table legs as claimed in claim 1, wherein the bottom end of the base is horizontally and symmetrically extended outwards to form a plurality of limiting protrusions, and the limiting protrusions are abutted with the section of one end of the inner tube.

9. A device for improving the telescopic stability of a table leg as claimed in claim 1, wherein a tube housing is provided between the inner tube and the outer tube, the tube housing having a tube housing portion and a tube fastening portion disposed along the outer circumference of the tube housing portion and fastened against the cross-section of the outer tube.

10. The device for improving the telescopic stability of the table legs as claimed in claim 9, wherein the tube sleeve part has a tube boss, and the wall of the outer tube has a matching limit hole.