JP2021115271A - Cushion structure - Google Patents

Abstract

To provide a cushion structure to be used for a chair or a seat part and/or a back part of a couch where body pressure can be excellently dispersed.SOLUTION: A cushion structure to be used for a chair a seat part and/or a back part of a couch 1 forms openings 4, 6 on a seat frame 2 and/or a back frame 5 and is fitted by frames 2, 5 so as to cover the openings 4, 6 by warping cloths 7, 13 composed by yarns that have no elasticity. A cushion material is disposed above the cloth 7 of the seat part and/or on the front side of the cloth 13 of the back part.SELECTED DRAWING: Figure 9

Description

The present invention relates to a cushion structure used for the seat and / and back of a chair or sofa.

Conventionally, elastic S springs and cloth springs are arranged on the seat frame of a chair, and a cushion material is arranged on the seat frame to form a seat portion. A chair is known that is comfortable to sit on by deforming to fit the shape of the buttocks and the like.

However, in the above-mentioned conventional chair, when the seated person sits on the seat, the elastic S spring or cloth spring stretches, and a force for contracting (restoring) the spring is generated, so that the seated person's buttocks or the seat There is a problem that a repulsive force is applied to the thigh and the body pressure cannot be dispersed well.

Further, when an S spring or a cloth spring is used, there is a problem that a feeling of bottoming occurs unless the cushion material placed on the S spring or the cloth spring is thickened.

Therefore, an object of the present invention is to provide a cushion structure used for the seat and / or back of a chair or sofa that can better disperse body pressure as compared with the cushion structure of the conventional chair. be.

In order to solve the above-mentioned problems, the invention according to claim 1 is a cushion structure used for a seat or / and a back of a chair or a sofa.
An opening is formed in the seat frame and / and the back frame, and the fabric made of the non-stretchable thread is attached to the frame so as to bend so as to cover the opening, and the upper side of the fabric of the seat and / and / or It is characterized in that a cushioning material is arranged on the front side of the cloth on the back.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the attachment position on the fabric side with respect to the frame is located outside the attachment position on the frame side over the entire circumference thereof. It is something to do.

In the invention according to claim 3, in the invention according to claim 1 or 2, an urging member is provided at the rear part of the seat frame and / or at the upper part of the back frame, and the urging member is used to form a part of the peripheral edge portion of the fabric. It is characterized by being urged toward the frame side.

The invention according to claim 4 is the invention according to claim 1 or 2 or 3, so that the fabric can be expanded and contracted in an inclined direction with respect to the front-rear direction of the seat portion of the chair or sofa or the vertical direction of the back portion. It is characterized by being configured.

According to the present invention, an opening is formed in the seat frame and / and the back frame to cover the opening so as to bend the fabric composed of the non-stretchable thread, and a cushioning material is provided on the upper side and / and the front side of the fabric. By arranging the arrangement, when the seated person is seated, the repulsive force from the fabric to the seated person can be reduced and the body pressure dispersibility can be improved.

Further, even if the cushion material is thin, the feeling of bottoming can be eliminated, so that the cushion material can be formed thin, the repulsive force due to the cushion material can be reduced, and the body pressure dispersibility can be improved.

The perspective view of the sofa which concerns on embodiment of this invention. The front view of the frame used in the Example of this invention. Top view of FIG. The right side view of FIG. The perspective view of FIG. A partially enlarged bottom view showing the relationship between the seat fabric and the seat frame in the embodiment of the present invention. FIG. 6 is a schematic view in which the shape of the seat fabric is exaggerated. The relationship between the first back cloth, the second back cloth, and the back frame in the embodiment of the present invention is shown, and the first back cloth and the second back cloth are partially enlarged front views provided only in one back opening. The second back fabric is located behind the first back fabric and should be indicated by a broken line, but since the shape is difficult to understand, it is indicated by a solid line. The vertical sectional view of the state of being seated on the sofa of FIG.

A mode for carrying out the present invention will be described based on examples.

The cushion structure of the present invention can be used for a chair such as a sitting chair or a chair for a vehicle such as an automobile, a seat or / or a back of a sofa for one person or a sofa for multiple people. , The cushion structure of the present invention will be described based on an embodiment applied to a sofa for three people.

FIG. 1 is a perspective view of the sofa 1 according to the first embodiment. Hereinafter, the rear side, which is the back side of the sofa 1, will be referred to as A, the front side, which is the opposite seating side, will be referred to as B, the right side as seen from the front side B will be referred to as C, and the left side will be referred to as D.

The sofa 1 has a wooden frame 10 shown in FIGS. 2 to 5. The frame 10 has a seat frame 2, and legs 3 protruding downward from the seat frame 2 are fixedly fixed to the four corners of the seat frame 2.

As shown in FIG. 3, the seat frame 2 includes a pair of left and right seat side frames 2a and 2a, a seat front frame 2b erected between the front ends of the seat side frames 2a and 2a, and rear ends of the seat side frames 2a and 2a. A partition 2d erected between the seat rear frame 2c and the seat front frame 2b and the seat rear frame 2c, and provided between the seat side frames 2a and 2a in the left-right direction (CD direction). It is composed of. The seat side frame 2a, the seat front frame 2b, the seat rear frame 2c, and the partition 2d are integrally formed.

In the seat frame 2, the seat side frames 2a and 2a, the seat front frame 2b, the seat rear frame 2c, and the seat opening 4 surrounded by the partitions 2d and 2d are formed in the left-right direction (CD direction). Three are formed. It should be noted that the partition 2d between the openings 4 and 4 of the adjacent seats may not be provided, and the openings 4 of one seat may be used. Further, in this embodiment, three seat openings 4 are formed in the left-right direction (CD direction), but the number of seat openings 4 may be one or two or more, and may be arbitrary. Can be set.

As shown in FIGS. 2 to 5, a back frame 5 is erected and fixed in the vertical direction on the rear side A of the seat frame 2.

As shown in FIG. 2, the back frame 5 is formed between a pair of left and right back frame 5a, 5a, a back frame 5b erected between the upper ends of the back frames 5a, 5a, and the lower ends of the back frames 5a, 5a. A partition 5d erected between the dorsal frame 5c, the dorsal frame 5b, and the dorsal frame 5c, and provided between the dorsal frames 5a and 5a in the left-right direction (CD direction). And the dorsal frame 5a, 5a, or the reinforcing member 5e erected between the dorsal frame 5b and the dorsal frame 5c.

In the back frame 5, the back opening 6 surrounded by the back frames 5a and 5a, the back frame 5b, the back frame 5c, and the partitions 5d and 5d is formed in the left-right direction (CD direction). Three are formed. It should be noted that the partition 5d between the adjacent back openings 6 and 6 may not be provided, and the back openings 6 may be one. In this embodiment, three back openings 6 are formed in the left-right direction (CD direction), but the number of back openings 6 may be one or two or more, and may be arbitrarily set. be able to.

As shown in FIG. 6, the opening 4 of the seat is covered with a seat fabric 7 made of a fabric woven or woven with a non-stretchable thread. In this embodiment, the fabric used for the seat fabric 7 is composed of warp knitting, does not expand and contract in the front-rear direction and the left-right direction of the sofa 1, and inclines with respect to the front-rear direction when a force is applied. A knitted yarn is used so that it can be stretched only in a direction, but a fabric that cannot be stretched in any direction may be used. Since the seat fabric 7 is made of a non-stretchable thread, even when the seated person sits on the sofa 1, no contraction force (restoring force) is generated on the seat cloth 7, and the seating material 7 repels the seated person. The force can be kept low.

The seat cloth 7 is attached to a seat frame 2 whose peripheral edge portion is located on the outer peripheral portion of the opening 4 of the seat over the entire circumference. As shown in FIG. 6, the attachment position (two-dot chain line) 7a with respect to the seat frame 2 on the seat fabric 7 side is located outside the attachment position (broken line) 2e on the seat frame 2 side over the entire circumference thereof. In addition, the seat cloth 7 is formed to be large.

FIG. 7 is an exaggerated view of the shape of the mounting position (two-dot chain line) 7a with respect to the seat frame 2 on the seat fabric 7 side with respect to the mounting position (broken line) 2e on the seat frame 2 side. As shown in the above, the rear side A at the mounting position (two-dot chain line) 7a of the seat fabric 7 with respect to the seat frame 2 is located outside the front side B with respect to the mounting position (broken line) 2e on the seat frame side. , In the left-right direction, it is located more outward from the side to the center. Further, both sides of the seat fabric 7 at the mounting position (dashed line) 7a with respect to the seat frame 2 are closer to the mounting position (broken line) 2e on the seat frame side from the front side B portion to the rear side A portion, respectively. It is designed to be located on the outside.

In addition, in FIGS. 6 and 7, the outer shape of the seat fabric 7 and the mounting (fixed) state are not shown in order to avoid the complexity of the drawings. Further, in order to show the mounting position of the urging member 9 with respect to the seat frame 2, the state of the urging member 9 in the state where the seat cloth 7 is attached to the seat frame 2 is shown.

As described above, in the seat cloth 7, the seat cloth is located so that the mounting position (two-dot chain line) 7a with respect to the seat frame 2 on the seat cloth 7 side is located outside from the mounting position (broken line) 2e on the seat frame 2 side. By enlarging 7 and attaching it to the seat frame 2, the seat fabric 7 is attached in a bent state without applying tension in the front-rear direction and the left-right direction, and when the seated person sits on the sofa 1, the figure shows. As shown in 9, the shape is similar to the shape of the body such as the buttocks.

Further, a total of two urging members 9 such as coil springs are provided on both sides of the rear side A of the opening 4 of the seat and on the lower side of the seat fabric 7. One end of the urging member 9 is fixed to the seat frame 2, and the other end of the urging member 9 is attached to both sides of the rear side A of the seat fabric 7. Further, the urging member 9 is arranged so that the urging direction (expansion / contraction direction) is oblique to the front-rear direction of the sofa 1 as shown in FIGS. 6 and 7.

By the urging force of the urging member 9, both side portions of the rear portion, which is a part of the peripheral edge portion of the seat fabric 7, are urged toward the seat frame 2 side, and the seat is seated in a state where the seater is not sitting on the sofa 1. The bending of the fabric 7 is reduced so that the fabric 7 becomes substantially flat. Further, the urging direction (expansion / contraction direction) of the urging member 9 is arranged so as to be oblique to the front-rear direction of the sofa 1 and at a position where it does not easily interfere with the seating position of the seated person. Therefore, the influence of the urging force of the urging member 9 on the seated person can be suppressed to a low level.

As shown in FIG. 9, a seat cushion material 11 made of an arbitrary cushion material is placed on the upper surface of the seat fabric 7. The cushion structure 12 used for the seat is composed of the seat fabric 7 and the cushion material 11.

As shown in FIGS. 8 and 9, the front side of the back opening 6 is covered with a first back cloth 13 made of a cloth made of non-stretchable threads. In this embodiment, the fabric used for the first back fabric 13 is composed of warp knitting, does not expand and contract in the vertical direction and the horizontal direction of the sofa 1, and when a force is applied, it is in the vertical direction. The thread is knitted so that it can only stretch in the direction of inclination

However, a fabric that cannot be stretched in any direction may be used.

Since the first back fabric 13 is made of a non-stretchable thread, the first back fabric 13 has a contraction force (restoring force) even when the seated person sits on the sofa 1 and leans on the back. It does not occur, and the repulsive force against the seated person can be suppressed to a low level.

The first back fabric 13 is formed so that the attachment position on the back frame 5 on the first back fabric 13 side is located outside the attachment position on the back frame 5 side over the entire circumference thereof.

Further, as shown in FIGS. 8 and 9, the lower part of the opening 6 of the back and the rear side A of the first back cloth 13 are made of a second cloth made of a non-stretchable thread. The back fabric 14 is provided over the entire left-right direction of the back opening 6. As a result, even when the seated person sits on the sofa 1 and leans against the back, no contraction force (restoring force) is generated in the second back fabric 14, and the repulsive force to the seated person can be suppressed to a low level.

The second back fabric 14 is formed so that the mounting position on the back frame 5 on the second back fabric 14 side is located outside the mounting position on the back frame 5 side over the entire circumference thereof, and the second back fabric is formed. 14 is attached in a bent state without tension being applied to the back frame 5.

Further, the amount of bending of the second backing cloth 14 when the seated person sits on the sofa 1 is set to be lower than the amount of bending of the first backing cloth 13.

By attaching the first back fabric 13 and the second back fabric 14 to the back frame 5 in this way, the first back fabric 13 in the portion where the second back fabric 14 is not provided bends without applying tension. When the seated person sits on the sofa 1 and leans back on the sofa 1, the portion where the seated person's scapula or the like touches bends into a shape close to the shape of the body, as shown in FIG. Further, the waist portion provided with the second back fabric 14 can suppress the amount of bending, the spine of the seated person can maintain an S-shaped curve, and stress on the back and waist of the seated person can be reduced.

Further, a total of two urging members 15 such as coil springs are provided on both sides of the upper portion of the back opening 6 and on the rear side A of the first back fabric 13. One end of the urging member 15 is fixed to the back frame 5, and the other end of the urging member 15 is attached to both sides of the upper part of the first back fabric 13. Further, the urging direction (expansion / contraction direction) of the urging member 15 is arranged so as to be oblique to the vertical direction of the sofa 1.

By the urging force 15 of the urging member, both side portions of the upper portion, which is a part of the peripheral edge portion of the first back fabric 13, are urged toward the back frame 5 side, and the seater is not sitting on the sofa 1. , The bending of the first back fabric 13 is reduced so that the first back fabric 13 becomes substantially flat. Further, the urging member 15 is arranged so that the urging direction (expansion / contraction direction) is oblique to the vertical direction of the sofa 1 and is arranged at a position where it does not easily interfere with the seating position of the seated person. Therefore, the influence of the urging force of the urging member 15 on the seated person can be suppressed to a low level.

As shown in FIG. 9, a back cushion material 17 made of an arbitrary cushion material is placed on the front side of the first back fabric 13. The first back fabric 13 and the cushion material 17 constitute a cushion structure 18 used for the back.

With the above configuration, in the sofa 1 of the present invention, the cushion fabric 7, the first back fabric 13, and the second back fabric 14 are made of non-stretchable threads and are stretched in a bent state. As a result, even when the seated person sits on the sofa 1, no contraction force (restoring force) is generated in the cushion cloth 7, the first back cloth 13, and the second back cloth 14, and the repulsive force to the seated person is generated. It can be kept low, and the body pressure dispersibility can be improved as compared with the cushion structure of the conventional chair.

Further, the seat fabric 7, the first back fabric 13, and the second back fabric 14 bend in a shape corresponding to the line of the seated person's body, so that the thickness of the seat cushion material 11 and the back cushion material 17 is reduced. Even so, since the feeling of bottoming can be eliminated, the thickness of the seat cushion material 11 and the back cushion material 17 can be made thin as shown in FIG. Further, by reducing the thickness of the cushion material 11 of the seat and the cushion material 17 of the back, the repulsive force to the seated person can be reduced and the body pressure dispersibility can be improved.

Further, when the seated person is not sitting on the sofa 1, the urging forces of the urging members 9 and 15 can reduce the dents in the seat cloth 7 and the first back cloth 13 and improve the aesthetic appearance of the sofa 1.

The urging directions (expansion and contraction directions) of the urging members 9 and 15 are arranged so as to be oblique to the front-rear direction of the seat or the vertical direction of the back, and interfere with the seating position of the seated person. Since it is arranged in a difficult position, when the seated person sits on the sofa 1, the spring, which is an urging member, expands, and the repulsive force generated by the contraction force can be suppressed to a low level.

In the sofa 1 of the first embodiment, the cushion structure 12 used for the seat portion and the cushion structure 18 used for the back portion are used, but only one of them may be used.

1 Sofa 2 Seat frame 4, 6 Opening 5 Back frame 7, 13 Cloth 9, 15 Biasing member 11, 17 Cushion material 12 Cushion structure used for seat 18 Cushion structure used for back

Claims (4)

Cushion structure used for the seat and / and back of a chair or sofa.
An opening is formed in the seat frame and / and the back frame, and the fabric made of the non-stretchable thread is attached to the frame so as to bend so as to cover the opening, and the upper side of the fabric of the seat and / and / or A cushion structure characterized in that a cushioning material is arranged on the front side of the fabric on the back. The cushion structure according to claim 1, wherein the mounting position of the fabric side with respect to the frame is located outside the mounting position of the frame side over the entire circumference thereof. 1. Cushion structure. The cushion structure according to claim 1, 2 or 3, wherein the fabric is configured to expand and contract in an inclined direction with respect to the front-rear direction of the seat portion of the chair or the sofa or the vertical direction of the back portion. ..

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