CN2629549Y - Folding chair - Google Patents

Abstract

The utility model discloses a folding chair, which is composed of front braces(7), latter braces (9), chair seat joist (6), a chair seat (4), a back-frame (2) and a seat back cushion (1), the front braces (7) and the latter braces (9) at both sides hinge together through the articulation (8), the latter braces (9) hinge front end of the chair seat joist (6), a pin rod (3) is arranged between the braces (7) at both sides, the rear end of the chair seat joist (6) at both sides is fixedly provided with a connecting support (5), the connecting support (5) is provided with a horizontal scoop channel (10) which is provided with forward opening, the pin rod (3) coordinates with the scoop channel (10); the back-frame (2) hinges the connection support (5). After using the above structure, the front braces (7) and the latter braces (9) connect to chair's four corners, the pin rod (3) is arranged in the scoop channel (10), the center of resistance stress distribution is reasonable, the torsion is small, adopting the fold of chair seat (4) and braces (7)and(9), the seat back cushion (1) folds the dual folding structures, the utility model has the merits such as simple and reasonable structure, same stress, long service life, convenient folding and collection and so on.

Description

Folding seat

One, technical field

The utility model relates to a kind of chair, particularly a kind of foldable chair.

Two, background technology

Now the chair of selling on the market can be divided into two kinds on its version, and a kind of is fixing chair, and another kind is a folding seat.And at present the folding mode great majority of folding seat are that a kind of seat closes up to backrest and folds, and have solved parking space and have taken big problem.But also exist following two drawbacks, the one, after folding seat is folding, highly not only do not reduce, increase to some extent on the contrary, the packing of product, transportation are just brought many inconvenience; The 2nd, existing folding seat stress point torsion is excessive, four pin unbalance stress, and junction and connection bearing pin are easy to generate deformed damaged.

Three, summary of the invention

For overcoming the disadvantage of above-mentioned existence, problem to be solved in the utility model just provides that a kind of simple and reasonable, four pin stressedly are evenly distributed, double folding structure, the convenient folding seat of collection.The technical scheme that the utility model overcomes the above problems employing comprises preceding spike, back lag, seat joist, seat, back rest and backrest, seat is fixed on the seat joist of both sides, backrest is fixed on the back rest, the preceding spike of both sides and back lag are hinged by hinge axis, the front end of back lag and seat joist is hinged, be connected with pin rod between the preceding spike of described both sides, the seat joist rear end of described both sides is fixed with the connection bearing, connect bearing and be provided with opening horizontal groove forward, pin rod matches with groove; Described back rest is with to be connected bearing hinged.After adopting said structure, forward and backward spike is connected four jiaos of chair, and pin rod matches with groove, and the stressed distribution of the strong point is reasonable, and torsion is little; Adopt seat folding, the folding double folding structure of the relative seat of backrest of front and back spike relatively; Have simple and reasonable, stressed evenly, advantage such as long service life, folding storage be convenient.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the utility model folded state structural representation.

Five, the specific embodiment

Fig. 1, shown in Figure 2, specific embodiments for folding seat of the present utility model, it comprises preceding spike 7, back lag 9, seat joist 6, seat 4, back rest 2 and backrest 1, seat 4 is fixed on the seat joist 6 of both sides, backrest 1 is fixed on the back rest 2, the preceding spike 7 of both sides and back lag 9 are hinged by hinge axis 8, back lag 9 is hinged with the front end of seat joist 6, be connected with pin rod 3 between the preceding spike 7 of described both sides, seat joist 6 rear ends of described both sides are fixed with and connect bearing 5, connect bearing 5 and be provided with opening horizontal groove 10 forward, pin rod 3 matches with groove 10; Described back rest 2 is with to be connected bearing 5 hinged.Forward and backward spike 7,9 is connected four jiaos of chair, and pin rod 3 matches with groove 10, makes the support stress point be distributed in four jiaos, and four pin are stressed evenly only to bear support force basically, and torsion is less relatively; Adopt seat 4 relatively before and after 7,9 folding, the backrest 1 relative seat 4 of spikes fold the double folding structures, folding storage, packed and transported are convenient.

Claims (2)

1, a kind of folding seat, comprise preceding spike (7), back lag (9), seat joist (6), seat (4), back rest (2) and backrest (1), seat (4) is fixed on the seat joist (6) of both sides, backrest (1) is fixed on the back rest (2), the preceding spike (7) of both sides and back lag (9) are hinged by hinge axis (8), back lag (9) is hinged with the front end of seat joist (6), it is characterized in that: be connected with pin rod (3) between the preceding spike (7) of described both sides, seat joist (6) rear end of described both sides is fixed with and connects bearing (5), connect bearing (5) and be provided with opening horizontal groove (10) forward, pin rod (3) matches with groove (10).

2, folding seat according to claim 1 is characterized in that: described back rest (2) is with to be connected bearing (5) hinged.

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