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Office chair

a technology for office chairs and backrests, applied in the field of chairs, can solve the problems of increased chair weight, manufacture cost, and increased weight of chairs, and achieve the effects of strong strength, low manufacturing cost, and convenient coupling of backrests

Inactive Publication Date: 2010-09-30
HO MIN CHUN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides an office chair that is strong enough to support the user's body and has a lower manufacturing cost compared to conventional chairs. The chair has a seat that includes a support member that is integrally formed with the seat and can be directly mounted on a chair leg. The seat can also have a pressure adjustment unit for seat height adjustment and can be easily coupled with a backrest. This allows for adjustable seat height and reduces manufacturing costs."

Problems solved by technology

Thus, the base 31 is usually made of metal and is formed thick enough to provide sufficient strength, which increases the weight of the chair and the manufacture cost.
Therefore, it is an important issue to design a chair that can reduce the manufacture cost and still have sufficient structural strength.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0014]Referring to FIG. 3, an office chair according to an embodiment of the present invention comprises a chair leg 30, a seat mounted on the chair leg 30 and a backrest (not shown in figures). The seat includes a seat cushion 11′, a seat frame 12′, two reinforcement beams 13′ disposed in the seat frame 12′ and a support member 14 disposed between the reinforcement beams 13′. The support member 14 is in a plate shape that extends upwards at edges to define an open space in which a plurality of ribs 144 is arranged across one another for reinforcing the support member 14. Thus, it reduces the amount of plastic material used during plastic injection molding, and also facilitates mold release. A primary feature of the present invention is that a central region of the support member 14 has an axle connecting portion 141 surrounded by the ribs 144. A bottom of the axle connecting portion 141 has an axle hole 1411. A side of the axle connecting portion 141 has a pivot portion 143 provide...

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PUM

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Abstract

A chair includes a chair leg, a backrest, a seat and a support member. The chair leg includes a stem that has a connecting end at a top thereof. The seat is integrally formed and has a seat frame, two reinforcement beams and a support member disposed between the reinforcement beams. The support member includes a plurality of ribs, and an axle connecting portion and an adjusting portion surrounded by the ribs. The axle connecting portion has an axle hole to couple with the connecting end. The support member has a support portion below the axle connecting portion. The adjusting portion includes a fixation hole. A bottom of the support member includes an axle mounting flange. One end of a support beam connects with the backrest and the other end of the support beam pivotally connects with the axle mounting flange.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to a chair, and more particularly to an office chair whose seat has a support member disposed under the seat. The support member can sustain the user's body weight and does not need other parts to reinforce the structure of chair. Thus, the manufacture cost is reduced.[0003]2. The Prior Arts[0004]Referring to FIG. 1, a conventional office chair comprises a seat 10, a backrest 20 and a chair leg 30. The seat 10 includes a seat frame 12 on which is placed a seat cushion 11. Two reinforcement beams 13 are mounted under the seat frame 12 for supporting the weight of the seat frame 12 and reinforcing the seat frame 12. The reinforcement beam 13 is provided with a plurality of assembly holes, whereas the seat cushion 11 may be a foam pad or a mesh stretched across the seat frame 12. The backrest 20 includes a back frame 22 on which is disposed a backrest cushion 21. The backrest cushion...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47C3/00
CPCA47C3/00
Inventor HO, MIN-CHUN
Owner HO MIN CHUN