Adjustable back chair
A backrest and chair technology, applied in the field of adjustable backrest chairs, can solve the problems of unsatisfactory comfort and inability to adjust the backrest, and achieve the effect of simple structure
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[0011] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment
[0012] see figure 1 As shown, a chair with an adjustable backrest includes a square seat board 10 and a backrest 11 fixedly connected with the seat board 10. The angle between the backrest 11 and the seat board 10 is an obtuse angle, and the longitudinal section of the backrest 10 is rectangular. It consists of an upper backrest section 11a and a lower backrest section 11b. One end of the lower backrest section 11b is fixedly connected to the seat board 10, and the other end of the lower backrest section 11b is provided with a groove (shown in the figure) for the upper backrest section to penetrate. The lower backrest section 11b is provided with There is a threaded hole communicating with the groove, and the bolt 13 fixes the backrest upper section 11a through the threaded hole. Preferably, the threaded hole is arranged on the side of the ...
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Abstract
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