Chair counterbalanced by mortar

Abstract

The invention discloses a chair counterbalanced by mortar, which is a hollow chair counterbalanced by mortar and relates to the field of chair equipment. the chair of the invention comprises a chair seat shell, a rotating shaft and 2 connecting plates, wherein the rotating shaft transversely penetrates in a position 1 / 3 of the length of a plastic seat near to the lower part of the chair seat shell; the 2 connecting plates is arranged at the two ends of the rotating shaft in a penetrated way and are positioned at two sides of the chair seat shell; the rotating shaft is rotatably connected with the chair seat shell and the 2 connecting plates, the chair seat shell comprises a bottom part of the chair seat shell; solidified mortar is in the bottom part of the chair seat shell, wherein the raw material formula of the mortar counterbalancing weight comprises the following components in mass percent: 25-35% of cement, 64-74% of coarse sand and 0.5-1.5% of glass fiber; and the height of the mortar counterbalancing weight is 1 / 5-1 / 7 of the height of the chair seat shell. Compared with the prior art, the invention has the beneficial effects of small turning and putting force, light sound, elegant appearance, simple manufacturing, durable use, fastness of surface and long service life, the material requested is the cheap mortar, the production cost is reduced, and an internal turning and putting mechanism can not be damaged due to frequent use.

Description

technical field [0001] The invention relates to a seat with mortar counterweight, in particular to a hollow seat with mortar counterweight for large stadiums and large studios. Background technique [0002] Large-scale stadiums are often used to hold various important sports events such as football and basketball; large studios are also often used to hold important performances and record large-scale programs, and have high requirements on the appearance and quality of the plastic folding seats used. As shown in Figure 1 (A), (B), (C) and (D), the original hollow seat is turned over by a torsion spring mechanism. The sitting feeling is comfortable, but its disadvantage is that a shaft runs through 1 / 3 of the seat length, and a torsion spring is sleeved on the shaft, and the seat is turned over by the torsion spring. The torsion spring of the seat has a large turning force and a fast bounce speed, and the noise generated by turning over is relatively loud, and the torsion sp...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the torsion spring of the seat in the above-mentioned prior art has a large turn-over force, a fast bounce speed, relatively loud noise generated by turn-over, and the torsion spring will appear twisting, breaking and other faults during turn-over. The service life is short, or it is difficult to cooperate with the hollow seat caused by the weight of the metal casting, the metal parts are exposed outside the bottom of the seat, the gap is uneven, the surface treatment of the metal ingot is complicated, and the color of the seat is not uniform. The degree of fading of plastic and metal on outdoor venues is different. Over time, it will seriously affect the overall appearance of the seat. In addition, the use of metal cast weights instead of torsion springs has disadvantages such as higher product costs. An alternative configuration is provided. Heavy method: Mortar counterweight to achieve the effect of flipping. Its characteristics are: small turning force, light sound, long service life, no failure, simple materials, and low cost

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