JP2000253947A - Furniture provided with backrest having bending function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide furniture in which an upper part of a backrest follows the form of the back of a seating person to bend as the back on the backrest is bent backward, so the back is bent backward from an upper part to a head part, and in which axial thickness of the backrest can be thin. SOLUTION: In furniture such as a chair, a sofa, and a bed in which a back spring 2, a back plate 3, and a crossbar 4 provided on an upper part of the back plate 3 are included in a backrest, a height of the crossbar 4 is set to be a height in the middle of the back of a person seated on a seat 5, and the back spring 2 are disposed in a height direction of the back plate 3. An upper part 6 of the back spring 2 is protruded above the crossbar 4, so the upper part 6 of the back spring 2 is bent backward as the back of the person is put on the backrest. The back spring 2 is composed of two or more springs disposed at an interval from each other in a width direction of the backrest, lower ends of the springs 7 are fixed to a back spring bearing 8 in the backrest, upper ends of them are connected to each other by a connection device 9 disposed in an arrangement direction of the springs 7, and they are fixed to the crossbar 4 around the crossbar 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of furniture such as chairs, sofas and beds provided with a backrest. More specifically, the present invention relates to furniture having a backrest with a bending function in which when a person sitting on a chair or a bed leans against the backrest, an upper portion of the backrest is bent (bending) rearward. .

[0002]

2. Description of the Related Art Conventionally, there are various kinds of furniture such as chairs, sofas and beds provided with a backrest, and an example of these is a sofa as shown in FIG. In this sofa, as shown in FIG. 5, a plurality of springs A are vertically arranged along a back plate C of a backrest B, and the upper end of each spring A is fixed to a cap D at the upper end of the back plate C. The lower end is fixed to the back spring receiver E at the lower end of the back plate C, the periphery of the spring A, the back plate C, and the seat plate F are covered with a cushion material G (FIG. 6), and the outside thereof is covered with a dress material H (FIG. 6). ).

[0003]

The above-mentioned conventional furniture with a backrest has the following problems. (1) If the back leaned against the backrest is bent back, the back is stretched and comfortable, but this type of conventional backrest usually has a wooden back plate and a fixed shape. Even if it is warped backward, the backrest does not curve backward. For this reason,
Even if you are sitting on a conventional sofa with a backrest or a bed and trying to warp your back backwards, your back does not warp sufficiently. (2) There is a reclining type of conventional backrest, but it does not change the shape of the back plate, but only changes the angle back and forth with the same shape, so it follows the shape of the warped back. Does not bend and the back does not warp sufficiently. (3) As shown in FIG. 7, the inner surface H of the backrest B is inclined rearward from bottom to top. For this reason, when the backrest B is raised, the width of the upper end of the backboard C is reduced, and the width W of the cap D disposed between the upper ends of the backboard C is also reduced. However, since the width W of the cap D is determined as the minimum required width in view of the strength, it is not allowed that the width W of the cap D becomes narrow due to the height of the back plate C. Therefore, when the backboard C becomes high, the entire width of the backboard C must be widened in order to allow the hems D having the minimum required width to be arranged at the upper end of the backboard C. In this case, the depth of the sofa is increased as shown by the imaginary line in FIG. 7 by the width of the back plate C, and there is a problem that a large installation space is required.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to make the back leaning against the backrest warp backward, and the upper portion of the backrest follows the shape of the warped back, thereby bending (bending).
An object of the present invention is to provide furniture including a backrest with a bending function that can bend rearward from the upper part of the back to the head and reduce the thickness of the backrest in the front-rear direction.

The furniture provided with the first backrest with a bending function according to the present invention is a furniture such as a chair, a sofa, a bed and the like in which a backrest has a built-in back spring, a backboard, and a coping provided on an upper part of the backboard. , The height of the backboard and the cap is the height of the back of the person sitting on the seat, the backspring is placed in the height direction of the backboard, and the upper part of the backspring protrudes above the cap ,
When the back rests against the backrest, the upper part of the back spring curves backward.

The furniture having the second backrest with a bending function according to the present application is constituted by two or more springs in which a back spring is arranged at intervals in the width direction of the backrest. It is fixed to the back spring receiver in the backrest, and the upper end is connected by a connecting tool arranged in the arrangement direction of each spring,
The area around the Kasagi is fixed to the Kasagi.

[0007]

(First Embodiment) A first embodiment of a furniture having a backrest with a bending function according to the present invention will be described in detail with reference to FIGS. What is shown in these figures is a case where the furniture of the present invention is a one-seat sofa. This sofa is a seat 5 on which a person sits as shown in FIG.
And a backrest 1 on which a person sitting on the seat 5 leans his back.

A wooden frame 10 as shown in FIG. 1 is built in the seat 5 and the backrest 1, and the frame 10 is substantially formed by a back plate 3 and a seat plate 13 as shown in FIG. The two L-shaped endplates 16 are arranged laterally apart, the front and rear of the opposing right and left endplates 16 are connected by a connecting member 19, and the upper end of the opposing left and right backboards 3 is connected by a cap 4. The lower ends are connected by a back spring receiver 8. Backboard 3 and Kasagi 4
Is set to a height (almost in the middle) in the middle of the back of the person sitting on the seat 5 as shown in FIG.

As the back spring 2, a plurality of steel springs (commonly referred to as "S springs") 7 obtained by bending a steel material in a meandering S-shape are used. The S springs 7 are arranged at intervals in the width direction of the coping 4. The lower end of the S spring 7 is laterally connected by a lower deco 22, the lower deco 22 is fixed to the back spring receiver 8, and the central part (near the Kasagi 4) is laterally connected by an upper deco 25. The deco 25 is fixed to the cap 4. The upper end of the S spring 7 is laterally connected by a steel connecting member (end wire) 9. The lower deco 22 and the upper deco 25
Is a steel material that is bent by meandering in a rectangular shape, and is disposed on the back spring receiver 8 and the cap 4 in a horizontal direction, and the back spring receiver 8 and the back spring receiver 8 are respectively provided by stoppers 27 as shown in FIG. It is fixed to Kasagi 4.

The S springs 7 at both ends in the width direction of the back spring 2 in FIG. 1 are connected and fixed by a connection fitting 30 with the two S springs 7 facing each other. By using two S-springs 7 in this way, the elastic force can be increased, and the shape of the spring can be reduced. In this case, instead of using two S springs 7 of the same shape in combination at both ends in the width direction, the S
For example, use a spring made of steel that is thicker than spring 7.
The strength of the back spring 2 can be improved or the elastic force can be adjusted by using a spring having another shape. The elastic spring is not only at the both ends in the width direction of the back spring 2,
It can be used for the middle part or not for both ends but only for the middle part.

Although not shown, a seat spring is arranged and fixed inside the seat plate 16 of FIG. 1 similarly to this type of sofa. In the present invention, the outer peripheries of the frame 10, the back spring 2, and the seat spring of FIG. 1 are covered with a cushion material 33 similarly to this type of sofa (FIG. 2), and the outer perimeter is covered with a dress material 36 (FIG. 2). ). As the cushion material 33, for example, hard urethane or soft urethane, a mixture thereof, cotton, or the like can be used. Needless to say, other desired ones can also be used. For the outer material 36, for example, cloth, leather, a sheet made of synthetic resin, or the like can be used, and other materials can also be used. Further, as shown in FIG. 2, a leg 40 is provided at the bottom of the frame body 10 so that the sofa can be installed in a stable state, and the upper surface (seat surface) of the seat 5 has an optimal height for sitting thereon. It is made to be. The legs 40 may be covered with the outer material 36,
It can be left uncovered and exposed to the outside. When the leg portion 40 is not covered with the outer material 36.
To make the legs 40 using beautiful wood grain,
It is desirable to improve the appearance by painting the surface.

[0012] In the sofa of FIG.
It can be used like a normal sofa by leaning the back on the backrest 1. In this case, the height of the back plate 3 and the cap 4 is the height in the middle of the back of the seated person,
Since the upper part 6 of the back protrudes above the coping 4, if the back is warped backward, the upper part of the back and the head make the back spring 2.
The upper part 6 of the backrest is pushed rearward and curved in the same direction, and the upper part of the backrest 1 is curved in the same direction. When the back is returned, the curved back spring 2 returns by the restoring force.

Further, as shown in FIG. 3, the backrest 1 is arranged at or near the center of the backrest 1, so that the thickness of the backrest 1 by the width W is smaller than that of the conventional sofa shown in FIG. Become thin. In addition, since the upper portion of the backrest 1 is bent rearward by the weight of the leaning person and the force of the backward bending, the backrest 1 is bent so as to slightly project forward (toward the seat 5) as shown in FIG. Can be kept. In this way, the depth of the entire sofa can be reduced as compared with the conventional sofa.

(Embodiment 2) A furniture according to a second embodiment of the present invention having a backrest with a bending function will be described with reference to FIG. This embodiment shows a case where the furniture of the present invention is a bed, and FIG. 4 shows a backrest 1 provided on the bed. The basic structure of the backrest 1 is the same as that shown in FIG. However, in the case of a bet, the width of the back spring 2 is wider than that of the sofa (the number of S springs 7 is increased). Spring 7 is also S spring 7
Are connected and fixed by the connection fitting 30 with two of them facing each other. Also in this case, instead of using two S springs 7 of the same shape in combination, a spring using a steel material thicker than the other portion of the S spring 7 is used, or a spring of another shape is used. To improve the strength of the back spring 2,
The elastic force can also be adjusted. The elastic springs can be used not only at the four ends at the both ends in the width direction and at the center of the back spring 2 but also between them. As in the above, the outer periphery of the back spring 2 is covered with a cushion material similarly to this type of bed, and the outer periphery is covered with a surface material.

[0015]

The furniture provided with the backrest with the first bending function of the present application has the following effects. (1) Make the upper part of the back spring protrude above the Kasagi,
When the back is leaned against the backrest, the upper part of the back spring is curved backward, so that the back leaning on the backrest can be warped backward, and the part from the warped back to the head. Is supported by the moderate elastic force of the curved back spring, and is very comfortable to sit on. (2) In the present invention, as shown in FIG. 3A, the upper end of the back plate is lower than that of the conventional furniture (sofa) shown in FIG. be the minimum required width (the same width as the coping of conventional sofa) from the intensity surface, the width of the back plate can be a narrow, narrows the depth W of the overall furniture by W ₁ shown in FIG. 3 (b) , Can be placed in narrow places.

The furniture provided with the second backrest with a bending function of the present application has the following effects. (1) The back spring is composed of two or more springs arranged at intervals in the width direction of the backrest, and each spring has a lower end fixed to a back spring receiver in the backrest and an upper end of each spring. Furniture equipped with a backrest with a bending function can be realized at low cost because it has a simple structure in which it is connected by connecting tools arranged in the arrangement direction and the vicinity of the kasagi is fixed to the kasagi. In addition, because of its simple structure, it is very durable and can withstand years of use.

[Brief description of the drawings]

FIG. 1A is an explanatory view showing a first embodiment of a backrest with a bending function according to the present invention, and FIG. 1B is a partially enlarged view of FIG.

FIG. 2 is an explanatory view showing the function of the backrest with a bending function of the present invention shown in FIG. 1;

FIG. 3A is a side view illustrating a backrest with a bending function of the present invention, and FIG. 3B is a side view illustrating a conventional backrest.

FIG. 4 is an explanatory view showing a second embodiment of a backrest with a bending function.

FIG. 5 is an explanatory view showing an example of the structure of a conventional sofa with a backrest.

FIG. 6 is an explanatory view showing an example of a conventional sofa with a backrest.

FIG. 7 is an explanatory view showing a problem of a conventional backrest.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Backrest 2 Back spring 3 Back plate 4 Kasagi 5 Seat 6 Upper part of back spring 7 Spring 8 Back spring receiver 9 Connector

Claims (2)

[Claims] A chair, a sofa, a bed or the like in which a backrest (1) is provided with a back spring (2), a back plate (3), and a cap (4) provided on an upper portion of the back plate (3). , The height of the Kasagi (4) is the height of the back of the person sitting on the seat (5), and the back spring (2) is arranged in the height direction of the back plate (3). ), The upper part (6) of the back spring (2) bends backward when the back rest (1) is leaned against the backrest (1) by projecting the upper part (6) of the backrest (1) upward. Furniture with a backrest with bending function. 2. The back spring (2) is composed of two or more springs (7) arranged at intervals in the width direction of the backrest (1), and the lower end of each spring (7) has a backrest ( 1) The upper end is fixed to the back spring receiver (8), the upper end is connected by the connecting tool (9) arranged in the arrangement direction of the respective springs (7), and the vicinity of the coping (4) is fixed to the coping (4). 2. Furniture provided with a backrest with a bending function according to claim 1.