CN102379525A

CN102379525A - Device for adjusting height of table and chair

Info

Publication number: CN102379525A
Application number: CN2011102002722A
Authority: CN
Inventors: 张治宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-11
Filing date: 2011-07-11
Publication date: 2012-03-21

Abstract

The invention discloses a device for adjusting height of a table and chair. The device comprises a small cylinder 1 which is provided with fastening nuts 5 and 13, openings 16 and a bottom 11, wherein the openings 16 are evenly distributed on the small cylinder 1, a bearing 8 is fixed on a big cylinder base 3, and a big cylinder 2 is fixed on the bearing 8 and sleeved on the small cylinder 1. When the big cylinder 2 is rotated, the small cylinder can ascend or descend under the engaging action of outer threads 9 of the small cylinder 1 and inner threads 10 of the big cylinder 2, and thus the height of the table and chair is regulated. The device is convenient to operate and has a simple structure.

Description

A kind of tables and chairs lift in height device

Technical field

Patent of the present invention belongs to a kind of tables and chairs lift in height device.

Background technology

At present about elevatable desk and chair; 86101803,200910179740.5,200810203469.X, 200820048052.6,200920197730.X etc. and the adjusting pin kind that is widely used in fields such as electronics, machinery, chemical industry and people's daily life is also more and more, like patent:.But these inventions can not solve four problems of following existence simultaneously: the one, existing tables and chairs etc. there is not solution preferably, and this problem of existing of middle and primary schools now just; The 2nd, its basic Gao Taigao of existing adjusting pin, practicality is not strong; The 3rd, when regulating and ground produces friction, regulates effort, and there is injury on ground; The 4th, regulate and divide youngster's shelves, can not change continuously.Patent of the present invention can all solve the problems referred to above.

Summary of the invention

Patent of the present invention provides a kind of tables and chairs lift in height device, has overcome deficiency of the prior art, can be widely used in various fields.Patent of the present invention is through rotating big tube 2, and by internal thread 10 engagement of little 1 external screw thread 9 with big tube 2, little tube can rise or descend, and realizes the object of the invention.

Description of drawings

Fig. 1, Fig. 2, Fig. 3 are a kind of structural representations of tables and chairs lift in height device.

Specific embodiments

1, a kind of tables and chairs lift in height device is made up of little tube 1, big tube 2, big tube base 3, clamp nut 5, clamp nut 13 and bearing 8.We prepare arc and 1/4th thin annulus film pads of some multiple sizes in every suit product.

When 2, using; Little tube 1 is enclosed within on table leg or the chair legs, and in general cover is insecure, with between table leg or chair legs and the little barrel with arc or 1/4th approach annulus rubber cushion jam-packs; Tighten with clamp nut 5 then, make on little tube 1 is fixed on table leg or the chair legs firmly.

3, rotate big tube 2, by internal thread 10 engagement of external screw thread 9 with the big tube 2 of little tube 1, little tube can rise or descend, reach the height that needs after, clamp nut 13 is tightened, big tube 2 is fixed on little 1 firmly.Because clamp nut 5, clamp nut 13 and big tube outer surface can have striped or partly be the plane, conveniently rotate during use or tighten, and can use spanner in case of necessity.

4, fixing between the bottom surface of bearing 8 and the big tube base 3, be connected with big tube 2 with the side above the bearing 8.

5, the position at the end 4 of big tube 2 should be after big tube 2 entangles bearing 8, the end 4 of big tube 2 with contact above the bearing 8 so that better bearing capacity is arranged.

Big tube 2 and bearing 8 can cause one when 6, making.

Claims

1. tables and chairs lift in height device; Form by little tube 1, big tube 2, big tube base 3, clamp nut 5, clamp nut 13 and bearing 8; It is characterized in that: through rotating big tube 2, by the external screw thread 9 of little tube 1 and big 2 internal thread 10 engagement, little tube can rise or descend.

2. a kind of tables and chairs lift in height device according to claim 1 is characterized in that: is connected by bearing 8 between big tube 2 and the big tube base 3, big base 3 maintenances were motionless when big tube 2 rotated.

3. based on the described a kind of tables and chairs lift in height device of claim 1, it is characterized in that: between little tube 1 and the big tube 2 is to be connected with a joggle by external screw thread 9 and screw thread 10, when relatively rotating between little tube 1 and the big tube 2, axially moves between little tube 1 and the big tube 2.

4. a kind of tables and chairs lift in height device according to claim 1; It is characterized in that: have on the little tube 1 opening 6 is arranged on clamp nut 5, the little tube more than three uniformly, the last opening 12 uniformly more than three of big tube; Little tube have the end 11 and with clamp nut 5 corresponding screw threads 7, clamp nut 13 is corresponding with the screw thread at big opening 12 places.

5. a kind of tables and chairs lift in height device according to claim 1 is characterized in that: big tube 2 should have the end 4.

6. a kind of tables and chairs lift in height device according to claim 1 is characterized in that: clamp nut 5, clamp nut 13 and big tube 2 outer surfaces can have striped or partly be the plane.