Method for realizing siesta function on desks and chairs and sitting and lying dual-purpose desks and chairs
A technology for sitting and sleeping, desks and chairs, applied in the field of teaching equipment, can solve problems such as unhealthy and unsafe nap methods, difficult functions, etc., achieve significant social and economic benefits, improve teaching quality, and reduce manufacturing costs.
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Embodiment 1
[0047] A kind of sitting and lying dual-purpose desk and chair, see figure 1 —4, including desk 10 and desk chair 20, desk 10 comprises desk cabinet 11, table leg 12 and desk base 13, school chair 20 comprises chair base 21 and seat board assembly 22, chair base 21 and sit board assembly 22 are hinged to each other; the seat board assembly 22 includes a back board 221, a seat board 222 and a supporting board 223 that are hinged together; its table legs 12 are two fixed columns, and their upper parts are fixedly connected or hinged with the table cabinet 11, and the lower end is connected with the table cabinet 11. The table base 13 is fixedly connected, and a platform 122 is fixed on the table legs for supporting the desk cabinet 11 in a horizontal position; the desk 10 is used together with the chair 20 .
[0048] The seat board 222 of the seat board assembly 22 is a compound seat board 222a, the back board 221 and the compound seat board 222a are connected by a limit hinge 2...
Embodiment 2
[0054] Embodiment two of the present invention is basically the same as example one, as Figure 5 , 6 As shown, the main differences are:
[0055] The seat plate 222 of the seat plate assembly in this example is a simple seat plate 222b, which is hinged with the back plate 221, and an extension plate 2211 is fixed on the lower end of the back plate; the front part of the simple seat plate 222b is hinged with an upper bayonet And the double card link 222b1 of the lower bayonet. The chair base 21 is an inverted T-shaped base 21a, which is hinged with the simple seat plate 222b of the seat board assembly 22, and the side of the upright part of the inverted T-shaped base is fixed with a bayonet pin 213 and hinged with an armrest 214;
[0056] The supporting plate 223 of the seat back plate assembly 22 in this example is a drooping supporting plate 223b, which is hinged with the front end of the seat plate 222, and the supporting plate connecting rod 223b1 is hinged on the back o...
Embodiment 3
[0061] The third embodiment of the present invention is as Figure 7 , 8 As shown, the seat board 222 of the seat board assembly 22 in this example is also a simple seat board 222b, which is hinged with the back board 221, but the chair base 21 is an h-shaped base 21c, including the back legs 21c1 and The seat leg 21c2, the top of the back leg 21c1 and the top of the back board 221 are hinged to each other. The supporting plate 223 of the seat board assembly 22 is a drooping supporting plate 223b, which is hinged with the front end of the seat plate 222, and a supporting plate support 223d is fixed on its back side.
[0062]When the simple seat board 222b is in the flat position, the simple seat board 222b and the back board 221 form an angle close to 90 degrees, and the drooping supporting board naturally droops; when the back board 221 is in an inclined position, the back board 221 and the simple sitting The angle of intersection of plate 222b is close to 180 degrees, and ...
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