JPH0612680Y2 - Folding chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a folding chair that can be flatly folded.

(Conventional Technology and Problems) Conventionally, folding chairs have various configurations. For example, a rear leg of the same width as the front leg is pivotally attached to the rear side of the front leg, and the rear frame is pivotally attached to the front leg. In a chair with a structure in which the end and the rear leg are connected by a link, when folded, the front leg and the rear leg are folded, so there is at least two pipes thick, and a considerable space for transportation, storage etc. I need.

A link connecting the seat frame and the rear leg is provided between the outer surface of the seat frame and the inner surface of the rear leg, and an appropriate stopper provided on the seat frame is engaged with the link to open the leg. Most of them are held, but such a structure has complicated movements, is troublesome to manufacture, and may cause a failure or an accident.

(Problem to be Solved by the Invention) In view of the above situation, an object of the present invention is that, when folded, it can be folded to a thickness of about one pipe, and the folding structure is simplified and stacked in a stable state. It is to provide a folding chair that is made possible.

(Means for Solving the Problem) According to the present invention, the object is to foldably attach the rear leg to the inside of the front leg, and pivotally attach the rear part of the seat to the front leg above the pivotal attachment part. This can be achieved by a folding chair in which one end of the connecting rod is pivotally attached to the front part and the other end of the connecting rod is slidably connected to the tips of the rear legs.

(Operation) When the seat is rotated with the front end of the seat, the connecting rod slides in the direction of coming out from the tip of the rear leg, and the rear leg is pulled toward the front leg, and the rear leg and the seat are placed in the front leg. Is folded into a stored state.

Also, when the seat is rotated from the folded state in the direction in which the seat is deployed,
The connecting rod attached to the seat slides in the direction of entering the tip of the rear leg, opens the rear leg, and opens and sits until the tip of the rear leg contacts the lower surface of the seat. it can.

(Example) Below, it demonstrates in full detail with an Example.

As shown in FIGS. 1 to 3, the front leg (1) made of a metal pipe material is formed in a substantially inverted U shape having a series of back frames (2) on its upper side. The rear leg (4), which has an outer dimension smaller than the inner dimension of the front leg so as to be inscribed in the front leg and is formed in a substantially U shape so as to have the lower side (3), can be folded with the collar (5) sandwiched therebetween. It is pivotally attached (6) to the front leg (1).

The seat (7) is made of a plastic material, a metal material, a wood material, or any other suitable material. And as shown in FIG. 3, the peripheral edge (8) of the back surface of the seat (7) is raised from the center of the rear surface, and when folded and stacked upward, the portion surrounded by the peripheral edge (8). The upper surface (9) of the seat of the lower chair is inserted into the. In addition,
A recess (10) is formed on the back surface, and the outer shape of the seat (7) does not come into contact with the lower edge of the back portion (11) attached to the back frame (2) when the outer edge is folded, Alternatively, it is formed in a shape that is thicker than the thickness of the leg pipe and does not overlap even if it abuts.

Bolts (15) are screwed into the nuts (12) and (12) provided on the back surface of the seat (7) through the mounting holes (14) of the seat frame (13) (Figs. 5 and 6). ). The seat frame (13) is constructed such that the front and rear side edges of the plate-shaped main body (16) are raised upward and the mounting pieces (17), (1
8) is formed, and the front end head (20) of the connecting rod (19) is pivotally attached to the front mounting piece (17). The rear mounting piece (18) is bent to form the receiving groove (22) so that the connecting rod (19) is inserted when folded, and the pivot (23) is provided on the side. . The seat frame (13) has a groove (2) formed on the back surface of the seat (7).
4) It fits snugly inside (Fig. 4), and the periphery of the rear mounting piece (18) is surrounded by a flange (25).

When the pivot shaft (23) of the attachment piece (18) of the seat frame (13) is inserted into the attachment hole (26) provided above the pivotal attachment portion (6) of the leg, the seat (7) has a rear portion. The front leg (1) is pivotally attached to the front leg (1).

The lower end of the connecting rod (19) is slidably inserted into a bearing piece (27) formed at the tip of the rear leg (4). In the figure, the connecting rod (19) is a rod, and the rod is used as a bearing piece (2
It is made to slide on 7), and the bearing piece (2
7) abuts on the tip head (20) (Fig. 5) The back part (11) is made of a plastic material, and has a ridge (28) formed on the back surface thereof, and when the ridge (28) is stacked, the ridge is formed. (28) engages with the recess on the front surface. Further, it has a concave groove (29) on the periphery thereof, and the concave groove (29) is fitted into the back frame (2) and fixed on both sides with screws (30) and (30). The back portion (11) may be made of a metal material, a wood material, or another material, and its thickness may be approximately the same as or slightly thicker than the thickness of the leg.

At the lower end of the front leg (1) and the lower side (3) of the rear leg (4), the floor contact piece (3
1) and (32) are provided. When the floor-contacting pieces (31) and (32) are made of urethane rubber material or the like, they are convenient because they are hard to slip when leaning against a wall or the like. Floor contact piece (3
In 1), the lower surface is formed in an arc shape and the receiving groove (33) is formed on the upper surface, and when stacked, the receiving groove (33) receives the peripheral surface of the upper front leg (1).

Thus, as shown in FIGS. 1 to 3, in the deployed state, the seat (7) has its rear portion supported by the pivot (23) and its front portion supported by its rear legs (4).
Since it is placed at the tip of the, it is possible to sit down.

When the seat (7) is rotated, as shown in FIG.
The seat frame (13), the seat frame (13) and the rear leg (4) are arranged in a substantially parallel state and can be folded to have a thickness of a leg pipe as shown in FIG.

Therefore, the chairs folded as described above can be stacked in a flat state.

(Effects of the Invention) Since the present invention is configured as described above, when the seat is rotated, the connecting rod and the rear leg are aligned in parallel with the inside of the front leg through the seat frame, and in the folded state, the leg pipe. Almost 1
It can be folded to the thickness of a book, and when stacking the chairs folded in this way, the upper surface of the lower chair sits in the center of the back of the upper chair, and the lower chair Since the lower peripheral surface of the front leg is supported by the receiving groove of the flooring piece of, and the upper and lower chairs engage, it can be easily stacked without slipping sideways, and the back part of the back has a raised part that goes into the front concave part. If formed, it will be more resistant to skidding and can be stacked in an orderly manner, and will not collapse or drop when transported by a trolley in a stacked state, the structure is simple, and the folding mechanism is simple and there are few failures. It's durable.

[Brief description of drawings]

1 shows a perspective view of the present invention, FIG. 2 is a front view, FIG. 3 is a central sectional view, FIG. 4 is a rear perspective view of a part of a seat, FIG. Fig. 6 shows the relationship between the seat frame and the front and rear legs. Fig. 5 is a perspective view in a developed state, Fig. 6 is a perspective view in a folded state, and Fig. 7 is an exploded view showing a state in which the back portion is attached to the back frame. FIG. 8 is a perspective view, FIG. 8 is an enlarged cross-sectional view of a mounting portion of a back frame and a back portion, FIG. 9 is an enlarged perspective view of a floor-contact piece, and FIG. 10 is a side view in a folded state. 1 ... front leg, 4 ... rear leg, 7 ... seat, 11 ... back part, 1
3 ... Seat frame, 19 ... Connecting rod, 31, 32 ... Floor piece

Claims (2)

[Scope of utility model registration request] 1. A front leg and a rear leg having an outer dimension smaller than an inner dimension of the front leg are foldably pivotally mounted, and a seat frame has a mounting piece having a receiving groove formed in a rear portion thereof. The connecting rod pivotally attached to the front leg above the pivotal attachment portion of the leg and pivotally attached to the side of the mounting piece formed on the front portion of the seat frame is slidable on the bearing piece formed on the tip of the rear leg. And the connecting rod is stored in the receiving groove of the seat frame in a folded state,
The seat attached to the seat frame has a peripheral edge of the back surface protruding from the center of the back surface so that the top surface of the seat enters the center of the back surface of the seat when folded and stacked. Is a folding chair that has a receiving groove on the upper surface to support the peripheral surface of the front legs. 2. The front leg has a back frame formed in series on the upper side thereof, and a back portion having a ridge formed on the back surface is fitted to the inner peripheral edge of the back frame so as to enter the recess formed on the front surface when stacked. The folding chair according to claim 1, which is fixed.