Method for achieving function of taking nap on desk chair and sitting-lying dual-purpose desk chair
A technology for sitting and sleeping, desks and chairs, applied in the field of teaching equipment, can solve problems such as difficult functions, unhealthy and unsafe nap methods, etc., and achieve the effects of improving teaching quality, significant social and economic benefits, and simple structure
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Embodiment 1
[0032] A kind of desk and chair for sitting and lying of the present embodiment, such as figure 1Shown in -2, comprise desk 10 and school chair 20, desk 10 comprises desk cabinet 11, table leg 12 and desk base 13, and school chair 20 comprises chair frame 21 and seat board assembly 22, the chair frame of school chair 20 21 and the seat board assembly 22 are movably connected to each other; the chair frame 21 includes a chair base 211, a backrest leg 212 fixed on the base and a chair leg 213 whose lower end is hinged with the chair base, and the chair leg top is also provided with an armrest 2131, which is connected with the chair leg The main body is fixedly connected. The seat board assembly 22 comprises a back board 221 and a seat board 222, which are movably connected to each other, and the seat board 222 front portion is hinged with the upper end of the chair legs 213; A fixed column 121, their tops are fixedly connected or hinged with the table cabinet 11, and their low...
Embodiment 2
[0042] Embodiment 2 of the present invention is basically the same as Example 1, except that the outer end of the hinge shaft of the long-axis hinge 2221 of the articulated seat board 22a of this example is provided with a guide sleeve 22212, and the lower part of the frame 221a1 is provided with a guide post 221a12. The sleeve 22212 is slidingly matched with the guide post. When the class chair is used as a seat, the guide sleeve slides upward along the guide post, and the lower backing board 221a3 is moved up by the hinge shaft of the long-axis hinge, and overlaps the back of the upper backing board 221a2 ,Such as image 3 shown. When the class chair 20 is used as a reclining chair, the guide sleeve slides down to its bottom along the guide post, and the lower backing plate 221a3 is moved to the bottom by the hinge shaft of the long-axis hinge, and is arranged below the upper backing plate 221a2. The rear also drops to its lowest position, where it meets the articulated bac...
Embodiment 3
[0044] Embodiment three of the present invention is basically the same as example one, as Figure 4 Shown in -6, the difference is only: the seat back plate assembly 22 of the class chair 20 is a guide rail type seat back plate 22b, and its back plate 221 is a guide rail type back plate 221b, and the guide rail type back plate includes a guide rail frame 221b1 and The fixed backboard 221b2, the upper end of the backrest leg 212 of the chair frame 21 is provided with a guide wheel 2121, the top of the guide rail type backrest board and the upper end of the backrest leg 212 are connected movably with the guide wheel 2121 with the guideway groove of the guiderail frame, and the seat board 222 The rear part is hinged with the rail-type backrest board 221b, and the backrest leg 212 is provided with a positioning device 2122; On the hinges of the positioning device 2122 and the chair legs 213, the positioning device 2122 locks the seat board 222 in a nearly horizontal position; when...
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