JP2002045261A - Cushion of chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair fit for an individual person to sit on without regard to the personal difference in the physique, the way of sitting of each person, etc. SOLUTION: The chair comprises a cushion main body 21 (22) made of a cushioning material and an auxiliary cushion material 3, a separate body from the cushion main body 21 (22), whose cushioning performance can be varied. The cushion main body 21 (22) and the auxiliary cushion material 3 are layered in the direction of the compression load to be applied when used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion used for a chair for improving a sitting comfort and a feeling of a backrest.

[0002]

2. Description of the Related Art Conventionally, a cushion is usually mounted on a seat or a back in order to make a seating feeling or a backrest feeling preferable. It is also known to make them partially different. As an example, a relatively hard cushion material is used for a peripheral portion of a seating surface, and a soft cushion material is used for a central portion.

[0003]

However, in the above-described chair in which the cushioning property and the shape cannot be adjusted by the occupant, there is an individual difference in the physique and sitting style of the occupant. May be dissatisfied with the comfort.

[0004] On the other hand, there is known an air cushion which can change the cushioning property at the time of use by adjusting the amount of internal air. However, in such a case, for example, if the internal air amount falls below a predetermined value,
There is a problem that the cushioning property is completely lost. In addition, the cushioning property using only air is so different from that of a cushion using a normal cushioning material such as sponge, urethane, cotton, or the like, that a feeling of discomfort or the like may occur.

[0005] In view of the above problems, the present invention provides a cushion body having a predetermined cushioning property and an auxiliary cushioning material having a variable cushioning property, which are separately laminated. It is a primary object to provide a chair cushion that can be individually matched in shape to individual users.

[0006]

That is, a cushion according to the present invention has a cushion body formed of a material having a cushioning property, and is formed separately from the cushioning body so that the cushioning property can be changed. An auxiliary cushion material is provided, and the cushion main body and the auxiliary cushion material are laminated along a direction in which a compressive load acts upon use.

With this structure, the cushioning properties of the auxiliary cushioning material can be variously changed in use, and the position of the auxiliary cushioning material can be changed because the auxiliary cushioning material and the cushion main body are separated. And the shape can be easily changed. Therefore, it is possible to provide a chair that optimizes the sitting comfort of each user in terms of both cushioning and shape.

Further, since the cushion body and the auxiliary cushioning material are laminated, even if the cushioning property of the auxiliary cushioning material is eliminated, the cushioning property of the cushioning body is secured at a minimum. Furthermore, since the cushioning properties of the cushion body are always exerted and only the cushioning properties of the auxiliary cushioning material are not exerted, there is no extreme difference from the cushioning property of a normal cushion unlike the air cushion described above. ,
It is possible to prevent a feeling of incongruity with a conventional one from being greatly reduced in a seating feeling, a backrest feeling, and the like.

[0009] Specific embodiments of the auxiliary cushioning material capable of easily changing the cushioning property while maintaining the lightness include:
The auxiliary cushioning material includes a flexible hollow body capable of enclosing a gas, and an openable and closable gas outlet for introducing the gas into and out of the internal space of the hollow body. The cushioning property can be changed depending on the amount of the gas. In addition, with such an auxiliary cushioning material, by partially disposing the auxiliary cushioning material on a seating surface or a backrest surface, gas can be taken in and out, and unevenness can be made or eliminated on the seating surface and the backrest surface. become able to.

In order to make it possible to partially change the cushioning properties of the auxiliary cushioning material and to make it possible to finely adjust the seating comfort, etc., the hollow body must have a plurality of internal spaces that are airtight with each other. It is preferable that the gas outlet is provided for each unit space.

In order to facilitate the adjustment of the cushioning property of the auxiliary cushioning material, it is preferable to provide an operation portion for externally performing the operation of introducing and introducing gas into and from the hollow body.

An embodiment in which the actual sitting comfort is particularly good may be one in which an auxiliary cushion material is sandwiched between a pair of cushion bodies.

[0013] In order to improve the fit and stability when seated, an auxiliary cushioning material may be arranged in a partial area of a seating surface or a backrest surface. More specifically, the auxiliary cushioning material is arranged from the rear edge of the seating surface to all or a part of both side edges, or all or part of both side edges of the seating surface, and the center of the front edge. It is preferable to dispose it on all or a part of both side edges of the backrest surface.

[0014]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a chair 10 to which the cushion 1 according to the present embodiment is applied.

The chair 10 has a leg base 12 having a caster 11 attached to the tip, a column 13 having a lower end supported by the leg base 12 and standing upright, and a pivotally supported upper end of the column 13. The seat 14 includes a seat 14 and a back 15.

As shown in FIG. 2, the seat 14 has a bowl-shaped seat 17 mainly composed of a wire frame YF, which protrudes downward, the cushion 1 supported on the seat 17, and the seat 14. It comprises a receiver 17 and an outer cover 16 (omitted in FIG. 2) for covering the cushion 1 from the outside.

In this embodiment, as shown in FIG. 1, the cushion 1 is made of a pair of cushion bodies 2 formed of a material having a certain cushioning property.
1 and 22, and an auxiliary cushion material 3 which is formed separately from the cushion main bodies 21 and 22 so as to be able to change the cushioning property.

More specifically, the cushion bodies 21, 22
Is, for example, in the form of a plate formed by regularly weaving a resin filament made of an olefin-based resin or the like so as to form a three-dimensional shape, while laminating these in the thickness direction,
The seat 14 is arranged over the entire seating surface. The upper cushion body 21 is further covered with a cloth middle cover 23. In addition, this cushion body 21,
It is a matter of course that a material using another material or a manufacturing method may be used for 22.

As shown in FIGS. 3 and 4, the auxiliary cushion member 3 is formed of, for example, a resin thin film and has a flexible hollow body 31 capable of enclosing gas, and an internal space 3S of the hollow body 31. And a gas outlet 32 that can be opened and closed to draw gas into and out of the cushion body 2.
1 and 22 so as to be sandwiched between them.

More specifically, the hollow body 31 has a substantially C-shape in plan view, which is disposed from the rear edge to both side edges of the cushion bodies 21 and 22. 22 is adhered to the upper surface. A hand pump (not shown) of a grip type is connected to the gas outlet 32 via, for example, a communication pipe (not shown). By operating the grip pump, air can be drawn into and out of the internal space 3S. I have. This manual pump also serves as an operation unit and is arranged at a position that can be operated from the outside. The pump may be not only a manual type but also an electric type.

Next, such cushion bodies 21 and 22
A method of assembling the seat 14 using the above will be briefly described with reference to FIG.

First, the lower cover 24 is mounted on the seat 17. The lower cover 24 is made of cloth and is mounted along the seat 17. Next, the lower cushion main body 22 is placed on the lower cover 24 so that the auxiliary cushion material 3 faces upward. Thereafter, the upper cushion body 21 covered by the middle cover 23 is replaced with the lower cushion body 2.
2 and the auxiliary cushioning material 3 is sandwiched therebetween. This intermediate state is shown in FIG. Furthermore, the outer cover 16 is put on from above, and the seat 15 is formed. Here, the lower cover 24 and the lower cushion main body 22 are not fixed to each other, and neither the lower cushion main body 22 nor the upper cushion main body 21 are fixed to each other.

In order to adjust the sitting comfort when seating, the inside air is taken in and out by the handgrip type manual pump. FIG. 6 is a partial sectional side view showing a state where the hollow body 31 of the auxiliary cushion material 3 is filled with air. FIG. 7 is a partial sectional side view showing a state where air is exhausted from the hollow body 31 of the auxiliary cushioning material 3.

According to the present embodiment configured as described above,
The cushioning properties of the auxiliary cushioning material 3 can be variously changed when used, and the auxiliary cushioning material 3 and the cushion bodies 21 and 22 are separated from each other. It is easily possible. Therefore, it is possible to provide a sitting comfort that meets the individual user's preference in terms of both the cushioning property and the shape.

Further, since the cushion bodies 21 and 22 and the auxiliary cushioning material 3 are laminated along the direction in which a compressive force acts by using the cushioning material, only the cushioning property of the auxiliary cushioning material 3 is not exhibited. . Therefore,
The cushioning properties of the cushion bodies 21 and 22 having ordinary cushioning properties are always superimposed on the overall cushioning properties, and it is possible to prevent the seating feeling from being significantly changed from the conventional one.

Particularly, in this embodiment, the auxiliary cushion material 3
From the shape and its arrangement position, if the inside air is evacuated, it can be used as a normal chair with a flat seating surface, and if it is filled with air, the rear edge and side edge of the seating surface are raised,
A chair suitable for a pregnant woman, a person having hemorrhoids, a person requiring care, or the like can be provided.

The present invention is not limited to the above embodiment.

For example, the hollow body 31 of the auxiliary cushion material 3
May be divided into a plurality of airtight unit spaces, and a gas outlet 32 may be provided for each unit space. Specifically, taking the auxiliary cushion material 3 having the same shape as that of the above embodiment as an example, as shown in FIGS. 8 and 9, the outer unit space 31S and the inner unit space 32S are divided into two or a rear edge. It is conceivable to divide the space into three, namely, the unit space 33S and the side edge unit spaces 34S and 35S.

By doing so, the cushioning properties of the auxiliary cushioning material 3 can be partially changed, and finer adjustments to sitting comfort can be made.

For the same purpose, it is conceivable to provide a plurality of auxiliary cushion members 3 and arrange them at different positions. As a typical example that can contribute to the sitting comfort, as shown in FIG.
Are provided at three places on both sides of the seat 14 and the center of the front edge.

Further, such a cushion 1 may be provided on the back 15 of the chair (shown in FIG. 11) or on the headrest (shown in FIG. 12). For example, in FIG. 11, the cushion body (not shown) is arranged over the entire backrest surface, and the auxiliary cushioning material 3 is arranged on both sides thereof. Thus, if the auxiliary cushion material 3 is inflated, the posture of the seated person can be fixed.

Of course, only one auxiliary cushion member and one cushion body may be laminated, or a plurality of all may be provided to form a multilayer structure.

In addition, the present invention is not limited to the above illustrated example,
Various changes can be made without departing from the spirit of the invention.

[0035]

As described in detail above, according to the present invention,
The cushioning properties of the auxiliary cushioning material can be changed variously when used, and the auxiliary cushioning material and the cushion main body are separated from each other, so that the position of the auxiliary cushioning material and the shape can be easily changed. Therefore, it is possible to provide a sitting comfort that meets the individual user's preference in terms of both the cushioning property and the shape.

Further, since the cushion main body and the auxiliary cushioning material are laminated, even if the cushioning property of the auxiliary cushioning material is lost, the cushioning property of the cushion main body is secured at a minimum. Furthermore, since the cushioning properties of the cushion body are always exerted and the cushioning properties of the auxiliary cushioning material are not exhibited only, there is an extreme difference from the cushioning properties of a normal cushion like the air cushion described in the conventional example. It does not occur, and it is possible to prevent a feeling of incongruity in the seating feeling, the backrest feeling and the like from the conventional one.

More specifically, the auxiliary cushioning material comprises a flexible hollow body capable of enclosing gas, and an openable and closable gas outlet for introducing gas into and out of the internal space of the hollow body. Provided that the cushioning property can be changed according to the amount of gas sealed in the hollow body, the cushioning property can be easily changed while maintaining the lightness, and the cushioning property can be partially changed to the seating surface or the backrest surface. , The gas can be taken in and out, and the seating surface and the backrest surface can be made uneven or not.

On the other hand, if the hollow body divides its internal space into a plurality of airtight unit spaces and the gas outlet is provided for each unit space, the auxiliary cushion material Can partially change the cushioning property of the vehicle, and finer adjustment of sitting comfort and the like can be performed.

[0039] If an operation section for externally performing the operation of introducing and introducing gas into and from the hollow body is provided, it is possible to facilitate the adjustment of the cushioning property of the auxiliary cushioning material.

As long as the auxiliary cushioning material is sandwiched between the paired cushion bodies, it can be extremely preferable in actual sitting comfort.

By arranging the auxiliary cushioning material on a part of the seating surface or the backrest surface, it is possible to improve the fit and stability when the user sits on the seat, or to make it easier for a specific person to sit. it can.

For example, if the auxiliary cushioning material is arranged over all or a part of the side edges from the rear edge of the seating surface, it can be preferable for pregnant women, etc. All or a part of the edge and the center of the front edge, or all or a part of both side edges of the backrest surface, respectively, can improve the sense of stability when seated. .

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an overall configuration of a chair according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the internal structure of the chair according to the embodiment.

FIG. 3 is an exemplary plan view showing a state in which air is removed from the auxiliary cushion material in the embodiment.

FIG. 4 is an exemplary perspective view showing a state in which air of an auxiliary cushion material in the embodiment is filled;

FIG. 5 is an exemplary perspective view showing a state in which the chair according to the embodiment is being assembled;

FIG. 6 is a partial side sectional view showing a state in which air is introduced into an auxiliary cushion material in the seat of the embodiment.

FIG. 7 is a partial side sectional view showing a state in which air is extracted from the auxiliary cushion material in the seat of the embodiment.

FIG. 8 is a perspective view showing an auxiliary cushion material according to another embodiment of the present invention.

FIG. 9 is a perspective view showing an auxiliary cushion material according to another embodiment of the present invention.

FIG. 10 is a perspective view showing a chair according to another embodiment of the present invention.

FIG. 11 is a perspective view showing a chair according to another embodiment of the present invention.

FIG. 12 is a perspective view showing a chair according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cushion 21, 22 ... Cushion main body 3 ... Auxiliary cushion material 31 ... Hollow body 32 ... Gas outlet 3S ... Internal space 31S-35S ... Unit space

Claims (10)

[Claims] 1. A cushion body formed of a material having cushioning properties, and an auxiliary cushioning material formed separately from the cushioning body and configured to be able to change the cushioning properties. A cushion for a chair, comprising a cushion material and a cushion material laminated in a direction in which a compressive load acts upon use. 2. An auxiliary cushion material comprising: a flexible hollow body capable of enclosing a gas; and an openable and closable gas outlet for introducing a gas into and out of the internal space of the hollow body. 2. The cushion for a chair according to claim 1, wherein the cushioning property can be changed according to the amount of gas sealed in the hollow body. 3. The chair cushion according to claim 1, further comprising a plurality of auxiliary cushion members arranged at different positions from each other. 4. The hollow body according to claim 3, wherein the hollow space is divided into a plurality of airtight unit spaces, and a gas outlet is provided for each unit space. Chair cushion. 5. A cushion for a chair according to claim 3, further comprising an operation portion for externally performing an operation for introducing and introducing gas into and from the hollow body. 6. The cushion for a chair according to claim 1, further comprising a pair of cushion bodies, wherein an auxiliary cushion material is interposed between the cushion bodies. 7. The chair according to claim 1, wherein the auxiliary cushioning material is arranged in a part of a seating surface or a backrest surface of the chair.
The cushion of the chair according to 2, 3, 4, 5, or 6. 8. The cushion of a chair according to claim 7, wherein the auxiliary cushion material is arranged from the rear edge to the both side edges of the seating surface. 9. The cushion for a chair according to claim 7, wherein the auxiliary cushioning material is arranged at the center of both side edges and the front edge of the seating surface. 10. The chair cushion according to claim 7, wherein the auxiliary cushion members are arranged on both side edges of the backrest surface.