JP3843711B2 - cushion - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cushion suitably used for a chair back or seat.
[0002]
[Prior art]
Cushions are available everywhere. For example, a back and a seat constituting a chair have a cushion used as a core material and a surface of which is covered with a tension fabric. And it is usual that foam materials, such as urethane, are adopted for the cushion.
[0003]
[Problems to be solved by the invention]
However, the foam material is excellent in cushioning properties, but has a relatively high density and poor air permeability. For this reason, it is difficult to dry when splashed with water, and inconvenience such as stuffiness may occur on the surface of the seated person by sitting for a long time. In addition, since materials such as urethane also cause environmental destruction, it is desirable to use more environmentally friendly materials.
[0004]
[Means for Solving the Problems]
In order to eliminate the above-mentioned problems, the present invention is intended to provide a cushion having excellent air permeability without impairing good cushioning properties and sitting comfort.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Therefore, the cushion of the present invention constitutes the seat of the chair and is formed by polymerizing three cushion layers, and the first and third cushion layers are relatively high in density and elastic. poor consists stereoscopic fiber structure, the second cushion layer is Ri Do the three-dimensional fiber structure rich in elasticity relatively low density, said first and third cushion layers on both sides of the second cushioning layer arranged, with which is supported by the receiving seat of the third cushion layer, the cushion layer, characterized in der Rukoto those woven regularly by a double Raschel machine so as to form a solid resin striatum.
[0006]
If comprised in this way, a required cushioning property can be ensured by the 2nd cushion layer rich in elasticity, and a favorable contact feeling can be ensured by the fine 1st cushion layer. For this reason, the function equivalent to a foaming cushion can be exhibited effectively. In addition, since the cushion of the present invention is fibrous, it has good air permeability through the air gap, and can be made to be less likely to cause stuffiness or the like even if it drains well and the body contacts for a long time. In addition, if an olefin-based material is used, it is relatively easy to dispose compared to urethane or the like, so that it is possible to effectively reduce inconveniences that lead to environmental destruction.
[0007]
Furthermore, since the cushion layer is formed by regularly knitting a resin filament with a double raschel machine so as to form a solid body, such a cushion layer can be effectively and easily realized. In addition, since the third cushion layer with fine texture is supported by the seat support, it is possible to avoid supporting the second cushion layer with coarse texture directly to the seat support, and to the seat support of the cushion. The fixing state can be improved.
[0008]
As a specific embodiment of the cushion layer, the cushioning property changes according to the roughness of the eyes, the first cushion layer is relatively finely structured, and the second cushion layer is The structure is relatively coarse, or the cushioning property changes according to the thickness of the fiber, and the first cushion layer has a relatively thin fiber shape, and the second cushion. Examples of the layer include those having a relatively thick fibrous shape.
[0009]
The present invention, as described above because construction is a useful Te because very as a component of the chair seat.
[0010]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0011]
FIG. 1 shows a chair to which this embodiment is applied, and FIG. 2 shows a partially exploded perspective view of the chair. In this chair, a seat 3 is supported on a leg 1 via a seat receiver 2, and a backrest 4 is supported by a back support rod 4a attached to an appropriate part. The cushion of the example is applied.
[0012]
More specifically, as shown in FIGS. 2 and 3, the seat 3 includes a tension member 20 stretched in an opening 2 a provided in the center of the seat receiver 2 and a cushion 5 disposed on the seat receiver 2. The peripheral portion 5a of the cushion 5 is wound around the lower surface 2b side of the seat receiver 2, and the peripheral portion 5a is fixed to the seat receiver 2 by appropriate means.
[0013]
On the other hand, as shown in FIG. 4, the cushion 5 of this embodiment is configured by polymerizing a first cushion layer 51, a second cushion layer 52, and a third cushion layer 53 from above.
[0014]
The first cushion layer 51 has a three-dimensional fiber structure having a relatively high density and poor elasticity with respect to the second cushion layer 52, and the second cushion layer 52 is relative to the first cushion layer 51. In particular, it has a three-dimensional fiber structure that is low in density and rich in elasticity. In this embodiment, since the third cushion layer 53 is basically the same as the first cushion layer 51, the first and second cushion layers will be described when each cushion layer is described below. The relationship between 51 and 52 is mainly taken up.
[0015]
These cushion layers 51 to 53 are formed by regularly knitting resin filaments made of olefin resin or the like so as to form a solid, and are manufactured using a double raschel machine or the like. As shown in FIG. 5, the double raschel machine is knitted so that diamond-shaped stitches appear on the front surface portion 5a and the back surface portion 5b, and the middle portion between the front surface portion 5a and the back surface portion 5b is a vertical fiber. It is a well-known warp knitting machine which is knitted together so as to be continuous by 5c, has two rows of needle beds mainly using latch needles, and can make a change knitted fabric with a large number of armatures or jacquard devices is there.
[0016]
When this knitting method is adopted, the cushioning property of the cushion layer can be changed depending on the roughness of the eyes and the thickness of the fibers. In the present embodiment, the first cushion layer 51 is relatively thin with respect to the second cushion layer 52 using relatively thin fibers while basically performing the same knitting method. The second cushion layer 52 is knitted into the first cushion layer 51 so that the eyes are coarsened using relatively thick fibers, whereby the first cushion layer 51 is The fiber structure having a relatively high density and poor elasticity with respect to the cushion layer 52, and the second cushion layer 52 having a relatively low density and rich in elasticity with respect to the first cushion layer 51. And make it possible. As an example, one side of the eye forming the rhombus of the first cushion layer 51 is about 2 mm, and one side of the eye forming the rhombus of the second cushion layer 52 is about 15 mm, and these eyes are similar to each other. The thing which was made into a special relationship is mentioned. In this embodiment, the thickness is about 3.5 mm for the first cushion layer 51 and about 17 mm for the second cushion layer 52. In this way, the first cushion layer 51 (the same applies to the third cushion layer 53) is made thinner than the second cushion layer 52 so as to cover the periphery of the second cushion layer 52. Thus, the first cushion layer 51 is used as a seat cover with respect to the second cushion layer 52.
[0017]
As described above, the cushion 5 of the present embodiment has a fiber structure in which the first cushion layer 51 has a relatively high density and poor elasticity with respect to the relationship between the two cushion layers 51 and 52 to be polymerized with each other. The second cushion layer 52 has a fiber structure that is relatively low in density and rich in elasticity.
[0018]
If comprised in this way, the required cushioning property is ensured by the second cushion layer 52 rich in elasticity, and at the same time, the second cushion layer is made by using the first cushion layer 51 having a fine mesh as a surface layer. It is possible to eliminate the sensation of feeling that occurs when sitting directly on the layer 52, and to disperse the load suitably to ensure a good feeling of contact. For this reason, it becomes possible to exhibit the function equivalent to a foaming cushion effectively. Moreover, since the cushion 5 of this embodiment is made of a fiber, it has good air permeability through the air gap, and even if it spills water, it drains well, and even if it sits for a long time, the body surface of the seated person is stuffy. The inconvenience which arises can be eliminated effectively. In addition, when making such a knitted shape, it is possible to use an olefin-based fiber material, so there is less damage even if discarded as it is compared to urethane, etc., and there is an inconvenience leading to environmental destruction Can be reduced. In this embodiment, the third cushion layer 53 avoids the direct support of the second cushion layer 52 with a coarse mesh on the seat receiver 2, so that the cushion 5 is well fixed to the seat receiver 2. It plays the role of
[0019]
Since the second and third cushion layers 52 and 53 are base layers, it is possible to use a reproduction material with poor color, and it is easy to respond to a request for recycling.
[0020]
In particular, the stitch structure by the double raschel machine employed in the present embodiment is such that the cushioning property changes depending on the roughness of the eyes, and the first cushion layer 51 is made relatively fine, and the second cushion layer. By making the eyes 52 relatively rough and adjusting the degree of both, it is possible to pursue a balance between good cushioning properties and contact feeling. Further, since the cushioning property can be changed depending on the thickness of the fiber, the first cushion layer 51 is made into a relatively thin fiber shape, the second cushion layer 52 is made into a relatively thick fiber shape, It is also possible to make it easier to pursue a compatible point by adjusting the degree.
[0021]
In particular, in this embodiment, the resin layers are knitted regularly into the cushion layers 51, 52, etc. so as to form a solid, and can be knitted by a double raschel machine. The present invention can be simply configured without cost.
[0022]
Since the present invention is configured as described above, it is very frequently used and exhibits extremely useful effects when applied to a chair seat 3 that requires excellent cushioning and breathability.
[0023]
The specific configuration of each unit is not limited to the above-described embodiment. For example, the cushion layer of the above embodiment is woven so as to form a diamond-shaped stitch, but it is also possible to change the knitting method so as to produce a turtle shell pattern and other various stitches. In addition, even if the cushion layer is a resin wire body that is randomly entangled so as to form a solid {for example, Breath Air (registered trademark of Toyobo Co., Ltd.)}, the same effect as described above is exhibited. The Furthermore, although the cushion of the present invention is used as a component of the seat in the above-described embodiment, it can of course be used as a component of the back as well.
[0024]
Other configurations can be variously modified without departing from the spirit of the present invention.
[0025]
【The invention's effect】
The present invention is implemented in the form as described above, and has the effects described below.
[0026]
That is, the cushion of the present invention is constituted by polymerizing at least two cushion layers, and by changing the density of the three-dimensional fiber structure formed by both cushion layers, effective elasticity is ensured in one cushion layer. The other cushion layer ensures a fine and fine contact feeling.
[0027]
For this reason, even if it is a three-dimensional fiber structure, the function equivalent to a urethane cushion can be comprised effectively. And since it is a fiber structure, favorable air permeability can be ensured through a space | gap, and even if a body is closely_contact | adhered for a long time, it can have a characteristic which is hard to produce a stuffiness. In addition, since materials such as olefins can be used, it is possible to expect utility value as an environmentally friendly cushion.
[0028]
Furthermore, since the cushion layer is formed by regularly knitting a resin filament with a double raschel machine so as to form a solid body, the above parameters can be easily adjusted, and the present invention can be easily configured. .
[0029]
In addition, since the third cushion layer with fine texture is supported by the seat support, it is possible to avoid supporting the second cushion layer with coarse texture directly to the seat support, and to the seat support of the cushion. The fixing state can be improved.
[0030]
At this time, a cushion layer whose cushioning properties change according to the roughness of the eyes is adopted, the first cushion layer is configured with relatively fine eyes, and the second cushion layer is relatively structured. The first cushion layer is made of a relatively thin fiber and the second cushion layer is made of a relatively thick fiber. If it has a shape, etc., it is possible to effectively pursue improvements in the function of the total chair taking into account the air permeability, contact feeling, etc. including cushion function by changing these parameters in various ways Become.
[0031]
As described above because construction is that, the present invention provides cushioning and breathability, useful Te because very as a component of the seat of the chair that must be met contact feeling like simultaneously.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a seat in the same embodiment.
FIG. 3 is a partial cross-sectional view of the seat of the embodiment.
4 is a further exploded perspective view of FIG. 2. FIG.
FIG. 5 is a partially enlarged perspective view showing a stitch structure of the embodiment.
[Explanation of symbols]
3 ... Seat 4 ... Back 5 ... Cushion 51 ... First cushion layer 52 ... Second cushion layer

Claims (3)

It constitutes the seat of the chair and is formed by polymerizing three cushion layers, and the first and third cushion layers have a three-dimensional fiber structure with relatively high density and poor elasticity. 2 of the cushion layer is Ri Do the three-dimensional fiber structure rich in elasticity relatively low density, arranged said first and third cushion layers on both sides of the second cushioning layer, the third cushion layer Is supported by the seat,
Cushion cushion layer, characterized in der Rukoto those woven regularly by a double Raschel machine so as to form a solid resin striatum. The cushion layer has a cushioning property that changes depending on the roughness of the eyes, the first cushion layer has a relatively fine eye, and the second cushion layer has a relatively coarse eye. The cushion according to claim 1. The cushion layer has a cushioning property that changes depending on the thickness of the fiber. The first cushion layer has a relatively thin fiber shape, and the second cushion layer has a relatively thick fiber shape. The cushion according to claim 1 or 2.

Images