Chair padding with air cushion
A padding device mounted in each of seat and backrest of a chair is disclosed. The device comprises a support board and a pad assembly secured between the support board and a supporting framework or a vertically stationary upright backrest support attached to the supporting framework, the pad assembly including a pad formed of foam rubber, an airtight cloth enclosed the pad and the support board, and a valve projected from the cloth for communicating air within the pad and external air. Air within the pad is adapted to increase or decrease by adjusting the valve responsive to sitting by a person. In another configuration the seat and the backrest are integrally formed. The temporarily deformed pad assembly can provide the buttocks and the back of a seated person with a degree of comfort by sharing weight of the person by both air within the pad and the pad.
1. Field of the Invention
The present invention relates to improvements of chair padding and more particularly to a chair (e.g., office chair) having both seat and backrest padded with foam rubber and adjustable air cushion so as to be adapted to users of different weights.
2. Description of Related Art
Conventionally, the seat and the backrest of a chair (e.g., office chair) is padded with foam rubber or the like for providing the user with a degree of comfort while sitting thereon. One such office chair is shown in
In a case of a person sat on the seat 1, the pad 3 is compressed. However, the prior art suffered from several disadvantages. For example, the person may feel discomfort, particularly the vertebra, after a long period of sitting since the pad 3 is completely compressed to be very firm. Thus, the desired degree of comfort of sitting is compromised. Also, ventilation of the seat 1 is poor, especially in hot summer days. Thus, the need for improvement still exists.
SUMMARY OF THE INVENTIONIt is an object of the present invention to provide a padding device mounted in each of a seat and a backrest of a chair, comprising a support board; a pad assembly secured on the support board, the pad assembly including a pad formed of foam rubber, an airtight first cloth enclosed the pad and the support board, and a valve projected from the first cloth for communicating air within the pad and external air; a second cloth enclosed the pad assembly with the valve being projected therefrom; and a frame member secured between the pad assembly and a supporting framework or a vertically stationary upright backrest support attached to the supporting framework, wherein air within the pad is adapted to increase or decrease by adjusting the valve in response to pressing either the seat or the backrest. By utilizing the present invention, a number of advantages are obtained. For example, the temporarily deformed pad assembly can provide the buttocks and the back of a seated person with a degree of comfort. Also, the weight of the person is supported by both air within the pad and the pad itself similar to air cushion device. Moreover, heat generated on the buttocks or the back during sitting is substantially absorbed by air within foam rubber of the pad.
It is another object of the present invention to provide a padding device mounted in an integral seat and backrest assembly of a chair, comprising a support board; a pad assembly secured on the support board, the pad assembly including a pad formed of foam rubber, an airtight first cloth enclosed the pad and the support board, and a valve projected from the first cloth for communicating air within the pad and external air; a second cloth enclosed the pad assembly with the valve being projected therefrom; and a frame member secured between the pad assembly and a supporting framework, wherein air within the pad is adapted to increase or decrease by adjusting the valve in response to pressing either the seat or the backrest.
The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
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While the invention herein disclosed has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
Claims
1. A padding device mounted in each of a seat and a backrest of a chair, comprising:
- a support board; and
- a pad assembly secured between the support board and a supporting framework or a vertically stationary upright backrest support attached to the supporting framework, the pad assembly including a pad consisting essentially of a foam rubber, an airtight first cloth enclosed the pad and tho support board, and a valve projected from the first cloth for communicating air within the pad and external air,
- wherein air within the pad is adapted to increase or decrease by adjusting the valve in response to pressing either the seat or the backrest, and the foam rubber is selected such that the pad becomes firmer when inflated and softer when deflated.
2. The padding device of claim 1, further comprising a second cloth enclosed the pad assembly with the valve being projected therefrom.
3. The padding device of claim 2, further comprising a frame member secured between the pad assembly within the second cloth and the supporting framework or the vertically stationary upright backrest support.
4. A padding device mounted in an integral seat and backrest assembly of a chair, comprising:
- a support board; and
- a pad assembly secured between the support board and a supporting framework, the pad assembly including a pad consisting essentially of a foam rubber, an airtight first cloth enclosed the pad and the support board, and a valve projected from the first cloth for communicating air within the pad and external air,
- wherein air within the pad is adapted to increase or decrease by adjusting the valve in response to pressing either the seat or the backrest, and the foam rubber is selected such that the pad becomes firmer when inflated and softer when deflated.
5. The padding device of claim 4, further comprising a second cloth enclosed the pad assembly with the valve being projected therefrom.
6. The padding device of claim 5, further comprising a frame member secured between the pad assembly within the second cloth and the supporting framework.
Type: Application
Filed: Jan 20, 2004
Publication Date: Aug 4, 2005
Inventor: Tun-Jen Ku (Da-Li City)
Application Number: 10/762,131