Adjustment Device for Chairs

a technology for adjusting devices and chairs, applied in the field of chairs, can solve the problems of inconvenient small rooms, and achieve the effect of reducing the occupying space of chairs and being advantageous for storage and transportation

Inactive Publication Date: 2012-11-01
CHEN CHAO KEN
View PDF13 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]An object of the invention is to provide an adjustment device for chairs, which can perform height adjustment of backrest without protruding the support from the backrest. This can reduce the occupying space of the chair and is advantageous to storage and transportation. Also, the abovementioned knocking-head problem can be solved.

Problems solved by technology

This may cause inconvenience for small rooms.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adjustment Device for Chairs
  • Adjustment Device for Chairs
  • Adjustment Device for Chairs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015]Please refer to FIGS. 1 and 2. The invention includes a support assembly 1. The support assembly 1 has a tube 11 and a fastener 2 penetrating the tube 11. The tube 11 is provided with a plurality of positioning holes 111 longitudinally arranged in a row. Please further refer to FIG. 5, the fastener 2 has a pin 20 penetrating a hollow portion 110 of the tube 11.

[0016]A sleeve 4 is accommodated in the hollow portion 110 of the tube 11. An upper end of the sleeve 4 is formed with a flange 41 by which the sleeve 4 is hung on an upper end of the tube 11. The inside of the sleeve 4 is provided with two longitudinally opposite rails 42 and a though hole 43 penetrating through the sleeve 4 and one of the rails 42. The through hole 43 is corresponding to the fastener 2 in position so that the pin 20 of the fastener 2 is inserted in to the through hole 43. A telescopic post 5 is retractably accommodated in the sleeve 4. The telescopic post 5 is formed with two longitudinal troughs 51 fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The adjustment device for chairs includes a support assembly, a support arm, a telescopic post and a backrest support. The support assembly has a tube and a fastener penetrating the tube. The tube is provided with a plurality of positioning holes longitudinally arranged in a row. An end of the support arm connects to the tube and is provided with a positioning bolt penetrating one of the positioning holes, and the other end is adapted to connect a cushion. The telescopic post is slidably accommodated in the tube and provided with a plurality of adjusting holes longitudinally arranged in a row for being selectively penetrated by the fastener. The backrest support is connected to the telescopic post for being moved with the telescopic post.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The invention relates to chairs, particularly to chairs with backrest and cushion height adjustment.[0003]2. Related Art[0004]Chairs are a requirement in everyday life. Besides utility, chairs also must provide enough comfort to different users. A conventional adjustable chair as shown in FIG. 7 utilizes a vee support 80 for adjustably supporting a backrest 81 and cushion 82. The backrest 801 and cushion 82 are slidably mounted on an upper portion 801 and lower portion 802 of the support 80, respectively. This adjustable structure can satisfy different requirements of various users.[0005]However, the support 80 must occupy a specific space because of its vee shape. This may cause inconvenience for small rooms. Furthermore, the support 80 is not retractable, so the top 803 will awkwardly protrude from the backrest 81 when the backrest 81 is adjusted to a lower position. A user sitting on the chair tends to be knocked on his / her...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A47C3/40A47C3/34
CPCA47C3/34A47C1/023A47C7/402A47C3/40
InventorCHEN, CHAO-KEN
OwnerCHEN CHAO KEN