JPH0222154U

JPH0222154U -

Info

Publication number: JPH0222154U
Application number: JP10199088U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1990-02-14
Anticipated expiration: 2003-07-09
Also published as: JPH0527090Y2

Description

[Brief explanation of drawings]

第１図から第６図までは第１実施例を示し、第
１図は椅子の斜視図、第２図は第１図の―視
側断面図、第３図は座体及び背凭部の斜視図、第
４図は第２図の―視断面図、第５図は第３図
の―視拡大断面図、第６図は第５図の断面図
、第７図は第２実施例の斜視図、第８図は背凭部
の裏面図、第９図は第７図の―視断面図であ
る。１……椅子、２……脚支柱、３……支持台、４
……シエル板、５……支持ピン、６……ばね手段
、７……背凭部、８……座体、９，１０……クツ
シヨン材、１１，１１……連接部、１２……自由
端部、１３，２３……補強リブ体、１４，２４…
…膨出部、１７，２８……連動手段、１９……押
圧カム、２０，２２……連結体、３０，３０……
リンク、３２……ばね、３５……回動レバー、３
７……固定手段。 Figures 1 to 6 show the first embodiment, with Figure 1 being a perspective view of the chair, Figure 2 being a cross-sectional side view of Figure 1, and Figure 3 showing the seat and backrest. 4 is a sectional view of FIG. 2, FIG. 5 is an enlarged sectional view of FIG. 3, FIG. 6 is a sectional view of FIG. 5, and FIG. 7 is a sectional view of the second embodiment. FIG. 8 is a rear view of the backrest portion, and FIG. 9 is a sectional view taken along the side of FIG. 7. 1...Chair, 2...Leg support, 3...Support stand, 4
... Shell plate, 5 ... Support pin, 6 ... Spring means, 7 ... Backrest, 8 ... Seat body, 9, 10 ... Cushion material, 11, 11 ... Connection part, 12 ... Free End portion, 13, 23... Reinforcement rib body, 14, 24...
...Bulging portion, 17, 28... Interlocking means, 19... Pressing cam, 20, 22... Connecting body, 30, 30...
Link, 32... Spring, 35... Rotating lever, 3
7...Fixing means.

Claims

[Claims for Utility Model Registration] (1) The backrest of the chair is formed of an elastic plate, and the back of the back has a vertically long shape that can be freely curved in the distance direction with respect to the back of the back. A reinforcing rib body having a bulging portion is provided, and at least one end of the right and left ends of the reinforcing rib body is attached so as to be slidable in the left and right direction of the backrest. A device for adjusting the elasticity of a backrest in a chair, characterized in that an interlocking means is provided on the backside of the backrest for driving the bulging portion of the reinforcing rib body in a distance direction relative to the backside of the backrest. (2) The seat body and backrest of the chair are integrally formed with an elastic board that is approximately L-shaped when viewed from the side, and the rear part of the seat body is integrally connected on both left and right sides with the lower end of the backrest. A reinforcing rib is formed by cutting and molding it into a substantially U-shape when viewed from above to form a free end, and the backrest has a reinforcing rib on the back surface thereof, which is provided with a vertically elongated bulge that can be freely curved in the distance direction with respect to the back surface of the backrest. The reinforcing rib body and the seat body are attached so that at least one of the right and left ends of the reinforcing rib body can be slid in the left and right direction of the backrest. A backrest of a chair characterized in that interlocking means is provided between the free end and the free end to drive the bulging part of the reinforcing rib body in a direction away from the back surface of the backrest in accordance with the downward movement of the free end. Elasticity adjustment device for the butt.