JP3097837U - Chair cushions and chairs - Google Patents

Abstract

An object of the present invention is to provide a cushion material for a seat chair which disperses body pressure so that a burden is not applied to a waist of a seated person, and a seat chair provided with the cushion material for the seat chair.
A cushion material (10) is provided along the inner rear edge of the seat so as to hit the buttocks of a person sitting on the seat (1) from below and behind the buttocks, in the width direction of the seat. A cross-section having a trapezoid whose lower side 13 is longer than the upper side 12, wherein one of two sides excluding the upper side and the lower side is substantially vertical 14, and the other side is an inclined side 15, characterized in that it is a cushion for a chair and chair. Material and a chair provided with the cushion material for a chair.
[Selection diagram] Fig. 1

Description

[0001]
[Industrial applications]
The present invention relates to a cushion material for a chair and a chair using the cushion material.
[0002]
[Prior art]
In the conventional seat chair, since the surface of the seat and the back in contact with the seated person are basically flat surfaces, when a person sitting on the seat leans on the back, the seated person's buttocks to the waist side A gap was created between the human body part and the seat and back of the chair, and an excessive burden was imposed on the waist of the seated person.
[0003]
[Problems to be solved by the invention]
The present invention solves the above-mentioned inconveniences, and provides a cushion material for a seat chair which disperses body pressure so that a burden is not applied to the waist of a seated person, and a seat chair provided with the cushion material for the seat chair. The purpose is to provide.
[0004]
[Means for Solving the Problems]
The cushioning material for a seat chair according to claim 1, wherein the width direction of the seat along the inner rear edge of the seat so as to hit the buttocks of a person sitting on the seat from under and behind the buttocks. A cushion member having a trapezoidal section whose lower side is longer than the upper side, wherein one side of the two sides excluding the upper side and the lower side is substantially vertical and the other side is an inclined side.
[0005]
According to a second aspect of the present invention, in the cushioning material for a seat and chair according to the first aspect, an inclined side has an inclination angle of 30 degrees.
[0006]
According to a third aspect of the present invention, there is provided a seat chair cushion material according to the first or second aspect.
[0007]
According to a fourth aspect of the present invention, in the seat chair according to the third aspect, the cushion material for the chair is installed between at least two other upper and lower cushion materials laminated inside the seat portion. Features.
[0008]
The seat chair according to claim 5 is characterized in that, in a posture in which a person sitting with his / her back stretched on the seat part of the seat chair composed of the seat part and the back part leans on the back as it is, from the buttocks side of the seated person to the waist. A cushioning material is provided inside the seat portion so as to fill a gap formed between the seat portion and the back portion toward the side.
[0009]
The invention of the chair according to claim 6, wherein the person sitting on the back of the chair with the back stretched on the seat of the seat consisting of the seat and the back rests on the back as it is. A cushioning material is provided inside the seat so as to fill a gap generated between the twisted portion and the seat.
[0010]
According to a seventh aspect of the present invention, in the chair according to any one of the third to fifth aspects, a pair of swelling portions are formed so as to bulge against the waist of a person sitting on the seat and to the left and right sides of the waist. And a cushion member for a seat for a lumbar seat provided with a projection portion is provided on a back portion.
[0011]
According to an eighth aspect of the present invention, in the seat chair according to the sixth or seventh aspect, the protrusion is hemispherical.
[0012]
[Embodiment of the invention]
Embodiment 1 FIG.
In the first embodiment, in a posture in which a person sitting with his / her back stretched on a seat portion of a chair composed of a seat portion and a back portion leans against the back portion as it is, the seated portion extends from the buttocks side to the waist side of the seated person. A seat chair provided with a cushioning material inside a seat portion so as to fill a gap generated between a portion and a back portion, or a waist side portion of a hip and a seat portion.
[0013]
In the present invention, the cushion material provided inside the seat portion is also referred to as a buttocks cushion material for a buttocks or simply a buttocks cushion. Hereinafter, the buttocks cushion will be described with reference to the drawings showing an example of the embodiment. FIG. 1 is a perspective view showing a main part of a chair, and FIG. 2 is an explanatory view.
[0014]
In FIG. 1 and FIG. 2, the buttocks cushion 10 is applied to the buttocks 2 of a person who sits with his or her back naturally stretched on the seat 1 so as to hit the buttocks 2 from below and behind the buttocks 2. A cushioning material is provided along the inner rear edge 11 of the seat 1 extending parallel to the lower edge 31 of the back portion 3 over the width direction of the seat 1.
[0015]
The buttocks cushion 10 shown in the figure has a trapezoidal shape in which the lower side 13 is longer than the upper side 12 in the cross section, and one side 14 of the back 3 side of the two sides excluding the upper side 12 and the lower side 13 is substantially vertical. The other side to be in contact has a trapezoidal shape with an inclined side 15, and the inclined angle of the inclined side 15 is 30 degrees with respect to the lower side 13. Hereinafter, the substantially vertical side 14 is also referred to as a vertical side, and the inclined side 15 is also referred to as an inclined side.
[0016]
In addition, the buttocks cushion 10 shown in the figure is disposed between the upper and lower two other cushioning materials 4 and 5 laminated inside the seat 1, but the upper and lower sides have two or more other cushioning materials. A material (not shown) may be laminated, and no other cushion material is placed on the upper part of the buttocks cushion 10, that is, in the example of FIG. As shown in FIG. 2, the structure may be applied directly to the buttocks.
In both FIGS. 1 and 2, the outer cloth surrounding the seat 1 and the back 3 of the chair is omitted.
[0017]
In this manner, the buttocks cushion 10 arranged along the rear edge 11 of the seat 1 has a posture in which a person sitting with the back muscles naturally extended on the seat 1 leans against the back 3 as it is. It is preferable to provide a space between the buttocks 2 and the waist side between the buttocks 2 and the waist side of a seated person so as to fill the gap, and to appropriately distribute the body pressure in the portion from the buttocks 2 to the waist side.
[0018]
In addition, when using the buttocks cushion 10 having elasticity in which the body pressure in the part extending from the buttocks 2 to the waist side is appropriately dispersed, a gap is formed between the waist and the back 3 as shown in FIG. It may be installed as it is.
That is, in a state where the user sits on the seat 1 with the back muscles extended, the buttocks cushion 10 is formed and arranged so that at least the gap between the seat 1 and the hips of the hips is filled. It should just be.
In any case, the buttocks cushion 10 is attached to the seat 10 such that the buttocks of the person sitting on the seat 1, more precisely, the portion of the buttocks near the waist side rides on the inclined surface 16 of the buttocks cushion 10. Arrange.
[0019]
According to the first embodiment, the gap generated between the seat 1 and the back 3 from the hip 2 side to the waist side of the seated person, or at least the gap between the seat 1 and the waist side of the hip. Since the buttocks cushion 10 is formed so as to fill the gap between the buttocks, by arranging it on the seat 1, the body pressure at the part extending from the buttocks 2 to the waist side, or at least in the related art, in contact with the seat 1 The part of the buttocks 2 that has not been moved toward the waist side contacts the buttocks cushion 10 and is supported by the seat 1 through this.
As a result, the body pressure of the buttocks 2 is appropriately dispersed, and a comfortable posture in which no load is applied to the waist, that is, a state in which the back muscles are naturally stretched in an S shape can be maintained.
[0020]
According to the results of the experiment, it was optimal that the angle of inclination of the inclined side 15 of the buttocks cushion 10 was 30 degrees with respect to the lower side 13 placed horizontally.
Of course, the inclination angle does not need to be exactly 30 degrees, but may be any angle that is sufficient to allow the back muscles to be naturally stretched while sitting, and the angle was about 30 degrees.
[0021]
Embodiment 2 FIG.
The second embodiment is directed to a seat chair in which the buttocks cushion 10 according to the first embodiment is provided on the seat 1, as shown in FIGS. 1 and 2 with respect to the waist of a person sitting on the seat 1. The seat back cushion material (waist cushion material) 30 provided with a pair of projections 31, 31 swelling in a hemispherical shape so as to hit the left and right rear sides of the waist. It is configured.
[0022]
The projections 31, 31 provided on the left and right rear sides of the waist do not necessarily have to be hemispherical. In short, when the body is deposited on the back 3, the left and right sides of the waist are vertically extended. Any protrusion that is held from the side may be used.
As shown in the figure, if the pair of protrusions 31 is formed in a hemispherical shape, the pressure points can be emphasized and felt, and the waist can be held comfortably from the left and right.
[0023]
According to the second embodiment, the back can be easily positioned at the center between the two projections 31 and 31 by the sense of pressure of the two projections 31 and 31 received on the back, and the back muscle is naturally maintained vertically. be able to.
In addition, in combination with the buttocks cushion 10 of the seat 1, it is possible to invite the occupant's back muscles to a natural posture in which the back is stretched vertically in an S-shape, thereby eliminating an extra burden on the waist. Can be done.
[0024]
[Effect of the invention]
According to the first to eighth aspects of the present invention, the burden on the waist of the person sitting on the seat is greatly reduced as compared with the related art, so that the user can sit comfortably for a long time.
[0025]
According to the cushion material for a seat chair (buttock cushion) of claim 1 or claim 2, the cushion material is not only provided inside the seat portion but also formed as a single body separate from the seat chair. By using the conventional seat chair having a flat portion at an appropriate position on the surface of the seat portion, the conventional seat chair can be used without burdening the waist.
[0026]
According to the invention of claim 6, in combination with the buttocks cushion for the seat portion, the back of the occupant can be invited to a natural posture in which the back muscle is vertically extended in an S-shape, and the extra sitting on the waist is further required. The burden can be eliminated.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main part of a chair.
FIG. 2 is a sectional view showing a main part of the chair.
[Explanation of symbols]
1 seat (chair), 2 buttocks,
3 back (chairs),
10 Cushion material for sitting chair (Cushion for buttock)
12 upper side, 13 lower side,
14 vertical sides, 15 inclined sides,
30 cushion material for sitting chair (waist cushion),
31 Projection.

Claims (8)

A cushioning material installed across the width direction of the seat along the inner rear edge of the seat so as to hit the buttocks of a person sitting on the seat from below and behind the buttocks. A cushion material for a seat and chair, wherein a lower side is a long trapezoid, and one side of two sides excluding an upper side and a lower side is substantially vertical and the other side is an inclined side. The cushion material for a seat and chair according to claim 1, wherein the inclined side has an inclination angle of 30 degrees. A seat chair comprising the chair cushion material according to claim 1 or 2. The seat chair according to claim 3, wherein the cushion material for the seat chair is provided between at least two other upper and lower cushion materials laminated inside the seat portion. In a posture in which a person sitting with his / her back stretched on the seat of a chair composed of a seat and a back leans against the back as it is, between the seat and the back from the buttocks side to the waist side of the seated person A seat chair characterized in that a cushioning material is provided inside the seat portion so as to fill the generated gap. In a posture in which a person sitting with his / her back stretched on the seat of a chair composed of a seat and a back leans against the back as it is, between the part from the waist side of the buttocks of the seated person and the seat A seat chair characterized in that a cushioning material is provided inside the seat portion so as to fill the generated gap. A seat cushion material for a waist is provided on a back portion having a pair of protrusions swelled so as to hit left and right rear sides of the waist with respect to the waist of a person sitting on the seat. The seat chair according to any one of claims 3 to 6. The chair according to claim 6 or 7, wherein the projection is hemispherical.

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