JPH0687818B2 - Chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a chair that can be stacked and organized during storage,
It relates to so-called stacking chairs.

[Conventional technology]

Some of these chairs are foldable, but when they are leaned against a wall they may slip and collapse, or when they are stacked on the floor they may lose balance and collapse.

Therefore, as shown in FIG. 17, there is also known a stacking chair in which a chair 1 whose leg intervals are widened downward is obliquely stacked on a carriage 2 in a vertical direction. In this case, a special cart is required, and it involves lifting and stacking,
It may collapse.

Therefore, Japanese Utility Model Publication No. 45-13080 discloses a chair in which the distance between the front legs is narrower than the distance between the rear legs and the rear end of the seating portion is hinged.

[Problems to be Solved by the Invention]

In the case of this chair, the chairs can be stacked horizontally along the floor surface without the need for a trolley, but it is necessary to rotate the seating portion vertically.

Therefore, an object of the present invention is to provide a chair that does not require a dolly and can be stored in a stable state by a simple operation.

[Means for Solving the Problems]

In order to achieve this object, the present invention is designed so that a seat supporting frame that supports a seat above a floor surface can be overlaid by another chair having the same structure, which enters from the rear along the floor surface. , The front cross-sectional shape is smaller than the rear cross-sectional shape.

If the seating part is fixed, it is supported on the seating part support frame so that its front end can be pivoted upward from a substantially horizontal position, or it can be automatically moved to a substantially horizontal position by gravity from the seated position. The seat support frame is supported via a spring so as to rotate so as to be able to return.

If the seat is flexible, the seat may be supported at its front end and its higher rear end on a seat bearing frame, or a flexible seat extending at least partially by the seat,
The seat supporting frame is obliquely supported by its front end portion and its higher rear end portion so as to be displaced to a substantially horizontal position by the seating from a position inclined upward rearward in a compressed state without seating.

[Action]

When stowed, another chair is displaced along the floor from the back of the front chair or from the front of the rear chair along the floor and into the seat support frame with a large rear cross section in the rear and upward. Alternatively, the lower part of the seat part which has been displaced in advance is inserted and overlapped.

When the seating portion has a fixed shape and is supported by the seating portion support frame so as to be rotatable upward from a substantially horizontal position with its front end as a fulcrum, the seating portion is pivoted upward when entering. If it has been pre-rotated by a spring upwards, it can be entered as it is,
When seated, it rotates so that it can automatically return to a substantially horizontal position.

If the seat is flexible and is supported on its seat support frame at its front end and higher rear end, it will deflect upward upon entry. In case of backward ascent in the compressed state, it can be entered as it is, and when seated, it flexes so that it can automatically return to a substantially horizontal position.

Example of Invention

1 to 3 show a chair according to a first embodiment of the present invention.

In FIG. 1, 10 is a chair that is horizontally stacked, and a seating support frame 19 is fixed to both side pipe-like rear legs 12 connected by a back support 11 and connecting pipes 13 therebetween. , And the front leg 14 whose upper end is connected by a bearing shaft 15. The shaft 15 has a hinged front portion that is bent downwardly from a fixed seating portion 18 (see FIG. 2A).

The connecting pipe 13 and the front leg 14 are located inside the rear leg 12 so that another chair having the same structure enters from the rear along the floor from the rear and is stacked horizontally. It is inclined to rise. At the rear end of the seat portion 18, a stopper 18b is provided so as to project in the lateral direction, and the stopper 18b is constrained at the rear end of the connecting pipe 13 (FIG. 2b).
Restrained almost horizontally.

At the time of stacking, as shown in FIG. 3, another chair 10 ₂ of the same structure is made to enter along the floor from behind the chair 10 ₁ at the foremost position in the state shown in FIG. Vertical entry portion, i.e. as cross-sectional shape increases toward the rear, front spacing of the legs 14 is narrower than the spacing of the rear legs 12, and to the connecting pipe 13 is behind uplink, chair 10 ₂ front curved portion 18a of the seat 18 is moved forward sunk on the rear surface while pressing pivoted upward hit the rear end of the chair 10 ₁ of the seat 18. With the advancement of the chair 10 ₂ further rotated upward, the gap of the connecting pipe 13 between stops almost missing restrained position. In this way, the chairs 10 ₃ , 10 _4, ... Are sequentially inserted from the back along the floor surface, so that the stacking in the horizontal direction is performed.

4 and 5 show a second embodiment.

As shown in FIG. 4, the seating support frame 20 is formed by forming the bottom frame 21 in a taper-like shape so as to allow entry from the rear and forming the front leg 22 at the tip. ing. At the upper end of the front leg 22, as shown in FIG.
A bearing 23 with a stopper is provided. That is, the seat 25
The pins fixed to the rear surface of the front end are inserted into the holes on both sides of the bearing 23 and hinged, and the arm is projected from the pin through the opening 23a (neither is shown), and the edge of the opening 23a is used as a stopper. It can be rotated upward from a horizontal position within a range of angles.

When the chair is entered from behind, the front end 25a of the seating portion 25 comes into contact with the front curved rear end 25b, and while moving upward, it advances in the gradually narrowing bottom frame 21. Then, they are sequentially stacked along the floor at positions where they are restrained in the front.

6 and 7 show a third embodiment. The second mentioned above
In a chair having a structure similar to that of the above embodiment, the spring 23 is urged to urge the bearing 23 shown in FIG. 5 between the front leg 22 and the seat portion 25.
b is loaded. As a result, the seating portion 25 is rotated and biased upward by an angle that allows entry from the rear, and it is not necessary to rotate the seating portion of the front chair during horizontal stacking. On the other hand, when seated, the gravity causes the opening 23a.
The lower edge is used as a stopper to rotate toward the lower regulating position.

8 and 9 show a fourth embodiment.

In this case, the seat supporting frame 30 is composed of the rear legs 31 on both sides, the C-shaped bottom frame 32, and the front legs 33. A leaf spring 34 is attached to the upper ends of the front legs 33 in order to rotatably support the seating portion 35 with a simple structure. A pad 31a for supporting the seating portion 35 in a horizontal state is attached to the upper ends of the rear legs 31 so as to abut the projections 35a provided on the rear surfaces on both sides of the rear end of the tapered seating portion 35. At the time of horizontal stacking, the seat portion 35 is pushed upward from the backside against the spring force of the leaf spring 34 to rotate upward.

FIG. 10 shows a fifth embodiment, in which a spring 38 surrounded by a bellows 38a is attached instead of the pad 31a in the fourth embodiment. As a result, the seating portion 35 is biased at the rear part to be rotated upward in advance, and when seated, the spring 38 is compressed by its gravity and becomes substantially horizontal.

FIG. 11 shows a sixth embodiment of the present invention. 40 is a seating part hinged to the front legs of the seating part support frame of the front leg hinge type. Magnets 41 and 42 having different polarities, for example, are embedded in the front portion and the rear portion of the seating portion. When the seating portion 40 is brought close to the seating portion 40 of the front chair during horizontal stacking, the front and back N poles repel each other, causing the front sitting portion 40 to float and rotate upward. When the front surface and the rear surface are made to further approach and approach the front portion, the front rear surface and the rear surface have polarities different from each other, and on the contrary, they are adsorbed and stabilized at a predetermined entrance position.

12 and 13 show a seventh embodiment.

The seat supporting frame 50 includes rear legs 52 on both sides connected by a connecting pipe 51, a bottom frame 53 having a C-shape, and front legs 54 on both sides connected by horizontal pipes 55 and 55a at the upper and lower sides thereof. It is composed of an upper horizontal pipe 55 and an armrest frame 56 connecting the rear legs 52. The armrest frames 56 are parallel to each other, but tilted backwards to allow entry.

The seat 57 is flexible and the seat body is lateral pipe 55.
For example, a flexible sheet 57a formed of a flexible sheet loaded with rubber, urethane, or the like between the cloths fixed on the both sides thereof is followed by a flexible sheet 57a that expands and contracts. Furthermore, the flexible sheet 5
The rear end of 7a is connected to the lower end of a flexible backrest seat 58a, the upper end of which is attached to the horizontal bar 58, above the seating surface. When the seat 57a is not seated, the seat 57a occupies a rearwardly inclined position as shown by the chain double-dashed line in FIG. 12 because the seat 57a is compressed.

At the time of horizontal stacking, as shown in FIG. 13, the claw-shaped connecting frames 53 are sequentially stacked inward by sequentially advancing from the back, the slanted armrest frames 56 are sequentially stacked downward, and the rear legs 52 having the widest spacing are arranged. Stack them backwards in order.

FIG. 14 shows an eighth embodiment of the present invention.

A seat 61 of a flexible sheet is integrally formed with a back support 61a on a seat support frame 60 that allows entry from the rear.
Is installed. An armrest 63 having a rear end bent upward is hinged to the front shaft 62.

During horizontal stacking, when the shaft 62 is inserted between the rear legs 64 with a wider space, the flexible seating portion 61 bends upward, and the armrest 63 pushes the bending portion 63a of the front chair at its front portion, and It sneaks into the armrest 63 of the front chair through the gap 65 between the pad 61a and the rear leg 64. Hereinafter, similarly, the seating portions 61 are stacked by utilizing the flexibility.

15 and 16 show a ninth embodiment of the present invention.

The casters 72 shown in FIG. 16 are attached to the four corners of the bottom surface of the seat supporting frame 71 that hinges the seat 70 at the front. Normally, the ball 72a is urged by a spring 72b so that the case
The chair protrudes from 72c and can be rolled so that the chair can be easily moved. Spring 72 due to gravity when seated
b is compressed, and the bottom surface 72c of the case of the caster 72 comes into contact with the floor surface so that it cannot roll.

〔The invention's effect〕

As described above, according to the present invention, the chairs can be stacked in order from the back or the front in a state where the chairs are installed on the floor surface, and therefore, it is not necessary to fold the chairs for storage or to lift and place them on a trolley. Become. You can do horizontal stacking without turning the seat.

[Brief description of drawings]

FIG. 1 is a perspective view of a chair according to a first embodiment of the present invention, FIG. 2 is a partial perspective view thereof, and FIG. 3 is a schematic side view showing a stacked state of the chair according to the same embodiment. FIG. 4 is a perspective view of a chair according to the second embodiment, and FIG. 5 is a perspective view showing a bearing of the same embodiment. FIG. 6 is a side view of the chairs in the stacked state according to the third embodiment, and FIG. 7 is a perspective view of a bearing portion of the same embodiment. FIG. 8 is a perspective view of a chair according to the fourth embodiment, and FIG. 9 is an enlarged sectional view of an essential part showing a supporting portion of a seat portion of the same embodiment. FIG. 10 is a sectional view of the spring portion of the chair according to the fifth embodiment. FIG. 11 is a side view of the seating portion of the chair according to the sixth embodiment. FIG. 12 is a perspective view of a chair according to the seventh embodiment, and FIG. 13 is a perspective view showing a stacked state of chairs according to the same embodiment. FIG. 14 is a perspective view of a chair according to the eighth embodiment. FIG. 15 is a perspective view of a chair according to the ninth embodiment, and FIG. 16 is a sectional view of a caster portion of the chair according to the same embodiment. FIG. 17 is a side view showing a conventional chair and its stacked state. 19, 20, 30, 50, 60, 71 …… Seating part support frame 18, 25, 35, 40, 57, 61, 70 …… Seating part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Yoshifusa Araya, Nobunta, Tauraminato-cho, Yokosuka, Kanagawa Kanto Automobile Industry Co., Ltd. In-house (72) Inventor Shinichi Saito Nobunta, Tauraminato-cho, Yokosuka City, Kanagawa Kanto Automobile Industry Co., Ltd. Reference: Jikkou 45-13080 (JP, Y1)

Claims (4)

[Claims] 1. A front cross-sectional shape of a seat supporting frame for supporting a seat above a floor surface so that another chair having the same structure can come in from the rear along the floor surface to be stacked. It is configured to be smaller than the rear cross-sectional shape, and the fixed seating part is supported by the seating part support frame so as to be rotatable upward from a substantially horizontal position with its front end as a fulcrum. Chair to 2. A front cross-sectional shape of a seat supporting frame for supporting the seat above the floor surface so that another chair having the same structure can be inserted from the rear along the floor surface and overlapped. It is configured to be smaller than the rear cross-sectional shape, and the fixed-shaped seating part turns automatically from its position pivoted upward with its front end as a fulcrum to the almost horizontal position by gravity due to seating. As described above, the chair, which is supported by the seat supporting frame via the spring. 3. A front cross-sectional shape of a seat supporting frame for supporting the seat above the floor surface so that another chair having the same structure can be inserted from the rear along the floor surface and overlapped. A chair characterized in that it is smaller than the rear cross-sectional shape and that a flexible seat is supported by the seat bearing frame at its front end and its higher rear end. . 4. A front cross-sectional shape of a seat supporting frame for supporting a seat above a floor surface so that another chair having the same structure can come in from the rear along the floor surface to be stacked. The rear seat is designed to be smaller than the rear cross-sectional shape, and the flexible seat that extends at least partially by the seat is located in a substantially horizontal position from the position where it leans upward toward the rear in the uncompressed compressed state. A chair characterized in that it is diagonally supported by a seating support frame at its front end and its higher rear end so as to be displaced.