JP2537759Y2 - 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 which can be easily connected with a back (backrest) and a seat (seat) by one-touch operation, has good back cushioning properties, and is easy to assemble.

[0003]

2. Description of the Related Art A chair having a structure in which a back portion tilts and has good cushioning properties has been known.

[0004] In this chair, the back and the seat are connected using bolts, nuts, mounting brackets, and the like, so that they cannot be easily assembled and disassembled.

There is also known a chair provided with a mechanism for tilting the back part back and forth in order to provide cushioning to the back part of such a chair. However, such a tilting mechanism is provided at the joint between the back part and the seat part. In this case, a spring or a leaf spring is interposed between the two to use these buffering functions.

[0006]

However, in such a conventional chair, the structure of the joint between the back and the seat is complicated, it takes a long time to assemble, and the bolt, the nut, the mounting bracket, etc. Since a large number of coupling parts and cushioning parts such as springs and leaf springs are used, there has been a problem that manufacturing costs are high.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and can be manufactured by one-touch connection between the back and the seat and without the need for connecting parts and cushioning parts. It is an object of the present invention to provide a plastic chair that is easy and has a reduced manufacturing cost.

[Structure of the invention]

[0009]

The plastic chair of the present invention is curved in an L-shape from the seating portion to the lower back half, and a plurality of bosses are protruded from the upper surface of the seating portion, and snaps are formed on the tops of these bosses. A seat outer cover attached to the seat outer cover, a stepped portion which comes into contact with an upper side of a lower back half of the seat outer cover, an upper half portion extending upward from a rear portion of the stepped portion, and a hook or a hook hole for engagement; A back outer cover having a waist inner portion hanging down from a front portion of the step portion, and a hook hole or a hook claw that engages with a hook claw or a hook hole of the waist inner portion in a back upper half portion. A seat inner cover having a snap hole on the bottom surface that fits into a snap of the seat outer cover, and a cushion on the upper surface, which is substantially the same shape as the seat outer cover, is attached to the bottom surface of the seat outer cover. With legs It is characterized in that it comprises.

In the present invention, it is preferable that the seat outer cover, the back outer cover, and the seat inner cover are all integrally formed of a synthetic resin material. Further, the cushion is preferably made of a foamed synthetic resin having elasticity such as foamed polyurethane, and it is desirable that the cushion be directly adhered to the seat inner cover.

[0011]

In the plastic chair of the present invention, the step of the back outer cover is brought into contact with the upper side of the lower back half of the seat outer cover from the inside, and the hooking claw for engaging the waist inner portion of the back outer cover is provided. Alternatively, by engaging the hook hole or hook claw of the seat inner cover with the hook hole and fitting the snap protruding from the bottom surface of the seat outer cover into the snap hole of the seat inner cover, the seat Assembly is completed.

[0012]

1 and 2 show an embodiment of the present invention.
This will be described with reference to FIG.

In these figures, a seat outer cover 1, a back outer cover 2, and a seat inner cover 3 are made of a hard synthetic resin having sufficient strength against a load received during use. The back outer cover 2 and the seat outer cover 1 are integrally formed of an impact-resistant rigid resin with a thickness that causes a predetermined bending.

The seat outer cover 1 is curved in an L shape from the seating portion 1a to the lower back half 1b, and a plurality of bosses 4 protrude from the upper surface of the seating portion 1a. And these bosses 4
Snaps 5 are respectively attached to the tops through snap holes. Furthermore, this seat outer cover 1
Is fixed to the leg 6 through the seat receiving device.
The back outer cover 2 has a stepped portion 2a in contact with the upper side of the lower back half 1b of the seat outer cover 1, and has a backed upper half 2b extending upward from the rear of the stepped portion 2a. Also,
At the front of the step 2a, a waist inner portion 2d is provided vertically protruding from the hooks 2c, 2c for upward engagement.

The seat inner cover 3 has hook holes 3b, 3b on the lower back half 3a for engaging the hooks 2c of the back outer cover 2 from below, and the seat outer cover 1 is provided on the bottom surface of the seat 3c. Snap hole 7 into which snap 5 is fitted
And a cushion 8 in which a foam polyurethane or the like is covered with a moquette cloth is stuck on the upper surface.
The seat 3c and the seating portion 3c are curved in an L-shape substantially the same as that of the seat outer cover 1.

Further, the back inner cover 9 has substantially the same shape as the upper back half 2b of the back outer cover 2, and has a cushion 10 in which foam polyurethane or the like is covered with a moquette cloth inside.
Is affixed.

The plastic chair of this embodiment is assembled as follows.

First, the lower back half 1b of the seat outer cover 1
A step 2a of the back outer cover 2 is brought into contact with the upper side of the back outer cover 1 from the inside of the seat outer cover 1, and a hook hole or hook of the seat inner cover 3 is engaged with a hooking claw 2c for engaging the waist inner portion 2d of the back outer cover 2. Engage the pawl. Next, the seat 5 and the back are fixed by fitting the snap 5 protruding from the bottom surface of the seat outer cover 1 into the snap hole 7 of the seat inner cover 3, and the assembly is completed.

Next, the cushion 8 is adhered to the seat inner cover 3 and the cushion 10 is adhered to the back inner cover 9, and this is snapped onto the upper back half 2 b of the back outer cover 2 by snap fitting or the like. By fixing, the chair of the present invention is completed.

[0020]

[Effect of the Invention] As described above, the plastic chair of the present invention can be easily manufactured because the back and the seat can be connected with one touch and no connecting parts or cushioning parts are required. And can be manufactured at low cost.

[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 exploded view showing an assembled state of a main part of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat outer cover 1b ... Lower back half part 2 ... Back outer cover 2a ... Step part 2c ... Hook nail 2d ... Waist inner part 3 ... Seat inner cover 3a ... Lower back half Part 3b: Hook hole 3c: Seating part 4: Boss 5: Snap 6: Leg 7: Snap hole 8, 10, Cushion 9: Back inner cover

Claims (1)

(57) [Scope of request for utility model registration] 1. A seat outer cover in which a plurality of bosses are projected from an upper surface of a seating portion, curved in an L-shape from a seating portion to a lower back half, and snaps are mounted on tops of the bosses, and the seat outer cover. A stepped portion that comes into contact with the upper side of the lower back half of the stepped portion, and has an upper back half that extends upward from the rear of the stepped portion, and a hook or a hook hole for engagement, and hangs down from the front of the stepped portion. A back outer cover having a waist inner portion, and a hook hole or a hook claw that engages with a hook claw or a hook hole of the waist inner portion on the upper back half, and is fitted on a snap of the seat outer cover on a bottom surface. A seat inner cover having a snap hole that fits and having a cushion attached to the upper surface, and having substantially the same shape as the seat outer cover, and a leg attached to the bottom surface of the seat outer cover. Plastic chair.