CN201683317U

CN201683317U - Table-chair split lifting frame

Info

Publication number: CN201683317U
Application number: CN2010201482600U
Authority: CN
Inventors: 黄良孟
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-04
Filing date: 2010-03-04
Publication date: 2010-12-29
Anticipated expiration: 2020-03-04

Abstract

The utility model relates to office furniture, in particular to a table-chair split lifting frame for adjusting the height of a table, a tabletop or a chair when being applied to the table, the worktable or the chair. The table-chair split lifting frame comprises a first tube, a second tube and a tube sleeve between the first tube and the second tube. The first tube comprises an upper pin which can be inserted into a hollow lower pin of the second tube, self clinching nuts with thread holes are arranged at different heights of the upper pin, and through holes matching with the thread holes are arranged on the lower pin and the tube sleeve. Compared with the prior art, the lifting frame has the advantages that the tube sleeve is arranged between the first tube and the second tube to avoid scratch to the lifting frame in use, as the thread holes on the self clinching nuts have certain depth, firmness degree of threaded connection can be increased, and the tube sleeve can eliminate gap between the first tube and the second tube, and avoids vibration in use.

Description

Tables and chairs split crane

Technical field

The utility model relates to a kind of office furniture, when particularly being applied to desk, workbench or chair, regulates the tables and chairs split crane of desk, table top or chair height.

Background technology

In the adjustment action for the desk height, lifting is to realize by stretching of table pin length.In the market, the desk at child below 10 years old has the function of regulating height.

In the conventional art, this crane comprises two joints hollow iron pipe or steel pipe with holes, and a joint hollow iron pipe wherein or the hole on the steel pipe are that the hole on a row screwed hole, another joint hollow iron pipe or the steel pipe that is arranged on the differing heights is a through hole.The nut reach through hole also is connected on the screwed hole, and this two joint hollow iron pipe or steel pipe with holes is fixed up.By selecting through hole to match, can make crane obtain different height with different screwed holes.

Because this screwed hole is machined directly on the tube wall of hollow iron pipe or steel pipe, and the pipe thickness of hollow iron pipe or steel pipe is thinner, makes that the degree of depth of screwed hole is limited.Adopt being threaded that this mode sets up not have enough intensity, after crane uses after a while, often occur insecure, the loosening phenomenon that is threaded easily.

Moreover, because two joint hollow iron pipes on this crane or steel pipe are directly contacts, therefore, in being to use process, can there be following two problems:

One if the two joint hollow iron pipes that cooperatively interact or the quality of fit of steel pipe do not have sufficiently high words, can make to have the gap between the two, makes tables and chairs in use produce vibration;

Its two, in this crane of lifting, can there be friction in two joint hollow iron pipes or steel pipes, thereby stay scratch.This scratch not only influences attractive in appearancely, and after hanging antirust paint, iron pipe or steel pipe get rusty easily, and shorten the physical life of crane.

Summary of the invention

The purpose of this utility model is to provide a kind of split crane of firm connection, and is firm in structure, durable, and is difficult for producing vibration.

For achieving the above object, the utility model has been realized a kind of like this tables and chairs split crane, it comprises: first body, second body and the pipe box between described both bodys, described first body comprises pin, described going up in the following pin of hollow that pin can insert described second body, be furnished with the self-clinching nut that is threaded the hole on the described differing heights position of going up on the pin, described pin down and described pipe box are provided with the through hole that is complementary with described screwed hole.

Preferably,, therefore, on described pipe box, also be provided with a groove, be used to avoid described self-clinching nut because the head of described self-clinching nut protrudes from described going up on the pin.

Compare with conventional art, the beneficial effects of the utility model are:

1, is provided with the pipe box of plastic material at first body and second body, makes crane in the process of using, can not produce scratch;

2, because the screwed hole on the self-clinching nut has certain degree of depth, can improve the firm degree that is threaded;

3, pipe box can be eliminated the gap between first body and second body, avoids producing in the use vibration.

By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.

Description of drawings

Fig. 1 is an assembled state structural representation of the present utility model;

Fig. 2 is a disassembly and assembly structure schematic diagram of the present utility model;

Fig. 3 is the complete section structural representation in the A-A cross section along Fig. 1 of the present utility model;

Fig. 4 is the complete section structural representation in the B-B cross section along Fig. 3 of the present utility model.

Fig. 5 is an adjusting pipe box vertical view of the present utility model.

Among the figure: 2 screws, 10 first bodys, pin on 11,12 self-clinching nuts, 20 pipe boxes, 21 pipe box inwalls, 22 pipe box outer walls, 23 canister apertures, 24 grooves, 30 second bodys, 31 times pins, 32 times pin hole.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is an assembled state structural representation of the present utility model, and Fig. 2 is a disassembly and assembly structure schematic diagram of the present utility model.In a specific embodiment of the present utility model, the utility model crane comprises first body 10, second body 30 and the pipe box 20 between both bodys.The last pin one 1 of hollow is set on first body 10, is furnished with the self-clinching nut 12 that is threaded the hole on the differing heights position of last pin one 1.The following pin 31 of hollow is set on second body 30, and following pin 31 is provided with the following pin hole 32 that the screwed hole on size and the self-clinching nut 12 is complementary.Pipe box 20 is a plastic material, it is provided with the canister aperture 23 that the screwed hole on size and the self-clinching nut 12 is complementary, the shape of the pipe box inwall 21 of pipe box 20 and the outer wall of last pin one 1 are complementary, and the shape of the pipe box outer wall 22 of pipe box 20 and the inwall of following pin 31 are complementary.

Fig. 3 is the complete section structural representation in the A-A cross section along Fig. 1 of the present utility model, and Fig. 4 is the complete section structural representation in the B-B cross section along Fig. 3 of the present utility model, and Fig. 5 is an adjusting pipe box vertical view of the present utility model.After self-clinching nut 12 was connected to pin one 1, the head of self-clinching nut 12 protruded from pin one 1.Also be provided with a groove 24 on the pipe box 20, be used to avoid the head of self-clinching nut 12.

Be described in detail below in conjunction with the operation principle of Fig. 1-5 pair of the utility model comb for dyeing in a specific embodiment:

Last pin one 1 inserts in the pipe box 20, and both one-tenth insert down pin 31 in combination.Select different self-clinching nuts 12, to obtain needed height.Regulate pipe box 20 and following pin 31, the axis of screwed hole, canister aperture 23 and the following pin hole 32 of self-clinching nut 12 is positioned on same the axis.Then, screw 2 passes canister aperture 23 and reaches pin hole 32 down, and is connected on the screwed hole of self-clinching nut 12, to finish connection.If select different height, can unclamp screw 2, select different self-clinching nuts 12, finish connection more again and get final product.

At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Such as: the upper-lower position of first body and second body can be changed mutually.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. tables and chairs split crane, it comprises: first body (10), second body (30) and be positioned at pipe box (20) between described both bodys (10,30), described first body (10) comprises pin (11), described going up in the following pin (31) of hollow that pin (11) can insert described second body (30) is characterized in that: be furnished with the self-clinching nut (12) that is threaded the hole on the described differing heights position of going up pin (11).

2. tables and chairs split crane according to claim 1 is characterized in that: also be provided with a groove (24) on the described pipe box (20), be used to avoid described self-clinching nut (12).