JP2537760Y2 - Plastic chair - Google Patents

Description

[Detailed description of the invention]

[Purpose of the invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic chair having a flexure-restricting band made of metal or the like attached to the back.

[0003]

2. Description of the Related Art Conventionally, various chairs referred to as plastic chairs have been manufactured and used. In these chairs, the plastic portion which is visible in appearance often merely serves as a cover. Was. And
Generally, the back (back portion) is reinforced with a metal plate,
The tilting and flexing behavior has been performed by a spring device such as a coil spring or a leaf spring interposed at a joint between the back portion and the seat portion (seat portion), and the cushioning action of the spring device.

[0004]

However, such a conventional plastic chair has a problem in that the overall weight is increased because a large number of cushioning parts such as reinforcing metal plates, coil springs, and leaf springs are used. Was.

The present invention has been made to solve such a conventional problem, and it is an object of the present invention to provide a plastic chair which is lightweight, inexpensive, and in which excessive bending and bending of the back are effectively restricted. And

[Structure of the invention]

[0007]

SUMMARY OF THE INVENTION A plastic chair according to the present invention includes a back and a seat connected in an L-shape, and a leg attached to a bottom surface of the seat, wherein the back has high elasticity. In a plastic chair constituted by connecting a seat outer cover and a back outer cover made of plastic having high rigidity, a plurality of bending restriction bands are arranged along a vertical direction on an inner main surface of the back outer cover. And upper and lower ends thereof are respectively fixed to bosses provided on the upper portion of the back outer cover and the seat outer cover, and the restriction band is positioned at a predetermined position on the inner main surface of the back outer cover from below. It is characterized in that a support receiving projection is provided to support.

[0008]

In the plastic chair of the present invention, the back outer cover and the back outer cover forming the main trunk of the seat and the back connected in an L-shape are made of plastic material having high elasticity and high rigidity. It is configured.

Further, a plurality of bending limiting bands made of metal or the like are provided on the inner main surface of the back outer cover, and upper and lower ends thereof are respectively fixed to bosses provided above the back outer cover and the seat outer cover. Has been
Bending and bending of the back outer cover are limited. Therefore, breakage of the back outer cover due to repeated bending can be prevented.

[0010] Further, since such a restriction band is supported from below by a support receiving projection provided on the inner main surface of the back outer cover, when the back outer cover bends within a prescribed limit, the restriction band is restricted. Is limited in the longitudinal direction, so that the band itself is not bent, and the bending is effectively limited.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1, 2 and 3. FIG.

FIG. 1 is a partial cross-sectional view showing the entirety of a plastic chair according to this embodiment from the side, FIG. 2 is an assembly view of a main part thereof, and FIG. 3 is a side view showing an enlarged main part.

In the chair of the embodiment, as shown in these figures, the back portion 1 and the seat portion 2 are connected in an L-shape, and an inverted L-shaped armrest 3 is straddled between these two side portions. It has a structure in which the legs 5 are attached to the bottom of the seat 2 via the seat receiving device 4 while being fixed.

The lower half of the back portion 1 and the seat portion 2 are made of plastic having high elasticity and rigidity, and are curved in a substantially L-shape, and a seat inner cover 7 and a seat inner cover 7 having substantially the same shape are provided. It is composed of a cushion 8 covered on an inner seat cover 7 and a cover fabric 9. The seat outer cover 6 and the seat inner cover 7 engage with a hooking hole 11 of the seat inner cover 7 with a hooking claw 10 for engagement of a waist inner portion, which will be described later, and a snap protruding from an upper surface of the seat outer cover 6. 12 are fitted into the snap holes 13 of the seat inner cover 7 to be integrated.

The upper portion of the seat outer cover 6 is made of plastic having high elasticity and rigidity, and extends upward from a rear portion of the lower step portion 14 and a waist vertically suspended forward and downward. Back outer cover 1 with inner part
5 is disposed with its stepped portion 14 in contact with the upper edge portion of the seat outer cover 6, and the lower portion (the waist inner portion) of the back outer cover 15 is fastened to the upper portion of the seat outer cover 6 by screws. Have been.

Further, a plurality of metal limiting bands 16 are respectively arranged along the vertical direction from the central portion of the inner main surface of the back outer cover 15 to the lower portion (the screw portion with the seat outer cover 6). The upper and lower ends are fixed to the upper portion of the back outer cover 15 and the upper portion of the seat outer cover 6 by screws as shown below. That is, bosses 17 are provided at the center of the back outer cover 15 and at the top of the seat outer cover 6, respectively. The bosses 17 at the top of the seat outer cover 6 project through the back outer cover 15 and protrude therefrom. I have. Both ends of the restriction band 16 are fastened to these bosses 17 by mounting screws 18 respectively. Further, on the inner main surface of the back outer cover 15, support receiving ribs 19 are formed so as to protrude, and the restricting band 16 is supported by the ribs 19 from below.

A back inner cover 20 is disposed inside the back outer cover 15. A plurality of snaps 21 projecting from the inner main surface of the back outer cover 15 are attached to the back inner cover 20. Are integrated by fitting into the snap holes. Further, the cushion 22 and the cover fabric 23 are covered on the back inner cover 20, thus forming the upper half of the back.

Further, the armrest 3 has an inverted L as a whole.
The mounting brackets 24 at both ends are screwed to the upper surface of the seat outer cover 6 and to both upper side portions. Further, the leg 5 is composed of a trunk cover 25 which is a connecting portion with the seat receiving device 4 and a plurality of legs 26 extending radially in the horizontal direction. Is being worn.

In the plastic chair of the embodiment constructed as described above, a back outer cover 15 also made of high elasticity and rigid plastic is screwed on the upper portion of the plastic outer seat cover 6 having high elasticity and high rigidity. This back outer cover 1 is connected and connected.
5, a metal limiting band 16 is disposed on the inner main surface of the back outer cover 15, and upper and lower ends thereof are screwed to bosses 17 protruding from the back outer cover 15 and the seat outer cover 6, respectively. Bending and flexing are limited. Therefore, excessive bending does not occur, and it is possible to prevent breakage of the back outer cover 15 due to repetition of the bending.

Since an appropriate gap is provided between the mounting hole formed in the limiting band 16 and the mounting screw 18, the back outer cover 15 can be bent or tilted within a specified limit. It has become.

Further, since such a limiting band 16 is supported from below by the support receiving ribs 19 provided on the inner main surface of the back outer cover 15, the back outer cover 15 is kept within a prescribed bending limit. When it deflects,
The length of the restriction band 16 in the longitudinal direction is restricted, and the deflection is effectively restricted.

[0022]

[Effects of the Invention] As is apparent from the above description, in the plastic chair of the present invention, a bending limit band is provided on the inner main surface of the back outer cover, and upper and lower ends of the band are connected to the back outer cover and the seat outer cover. Since each of the bosses is fixed by screws or the like, bending and bending of the back outer cover are limited.

Therefore, it is possible to prevent the back outer cover and the like from being broken due to repeated bending.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing an entire embodiment of the present invention from the side.

FIG. 2 is an assembly view of a main part of FIG. 1;

FIG. 3 is an enlarged side view of a main part of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Back part 2 ... Seat part 3 ... Armrest 4 ... Seat receiving device 5 ... Leg part 6 ... Seat outer cover 7 ... Seat inner cover 8, 22 ... Cushion 9, 23: Cover fabric 12, 21: Snap 13: Snap hole 15: Back outer cover 16: Restricted band 17: Boss 19: Supporting rib 20: Back inner cover 24: … Mounting bracket 25 …… Torso cover 26 …… Support leg 27 …… Caster

Claims (1)

(57) [Scope of request for utility model registration] 1. A seat outer cover and a back outer comprising an L-shaped back portion, a seat portion, and a leg portion attached to a bottom surface of the seat portion, wherein the back portion is made of highly elastic and rigid plastic. In a plastic chair constituted by joining a cover to the back outer cover, a plurality of flexure-restricting bands are disposed on the inner main surface of the back outer cover in a vertical direction, and upper and lower ends thereof are connected to the back outer cover. And a boss provided on an upper portion of the seat outer cover, and a support receiving projection is provided at a predetermined position on the inner main surface of the back outer cover so as to support the restriction band from below. A plastic chair characterized by the following.