JP2004089557A - Cushion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cushion for uniformly supporting the body by obtaining cushioning performance by a gel-like object, causing no damage of a sealing part even if a user sits down like falling, and causing no impairment of durability. <P>SOLUTION: A bag-shaped cushion body 11 is formed by arranging double sealing parts 14 and 15 in both side end parts 12c and 12d and the inside part of an airtight-watertight sheet 11, and is installed on a core material 19 applied to the reverse by bending on the inside of the double sealing part 15. A suspending cloth member 16 is arranged inside. Thus, even when the user sits down on the cushion body 11 like falling, a shock is relieved by the suspending cloth member 16. Since the shock is not directly applied to the sealing part 15 by bending, damage of the sealing part by the shock of a gel-like substance can be prevented so that durability can be improved. The gel-like substance put inside the cushion body 11 does not deviate, and can uniformly support a part of the body without pressing the body. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cushion, in which a cushioning property is obtained with a gel-like substance so that the buttocks can be uniformly supported, and the durability of the sealing portion is not impaired even when sitting down so as to drop the body. It is particularly suitable as a cushion for a wheelchair.
[0002]
[Prior art]
Conventionally, cushions have been used to improve the comfort of sitting on chairs and seats.Wheelchairs used for the movement of people with physical or physical disabilities use canvas or the like so that they can be folded. There are a lot of seats in the room, and there is a need for a cushion that can improve sitting comfort.
[0003]
Conventionally used cushions are generally made of various materials, such as those containing foam made of cotton or synthetic resin, those containing metal springs, and those containing fluids such as water or air. Is used.
[0004]
On the other hand, one of the characteristics required as a cushion for a wheelchair is that a cushion having a so-called body pressure dispersing property, in which a part in contact with the body can be uniformly supported without being pressed, is preferable, and water or a gel-like substance is contained inside. It is conceivable to use a cushion containing a fluid such as.
[0005]
As shown in FIG. 5, for example, a cushion containing a fluid such as a gel-like substance is formed by folding a synthetic resin sheet 1 into two parts and welding the surrounding three sides using a high-frequency welder to form a sealing portion. A cushion 3 is prepared by preparing a bag 3 sealed by forming 2 and filling a fluid into the inside through an inlet 4.
[0006]
When the user sits on the cushion 5 containing such a fluid, the bag 3 is deformed along the user's buttocks, so that the bag can be uniformly supported without being locally pressed.
[0007]
It is disclosed that a hanging cloth is used to suppress the swelling of the upper and lower sheets of such a bag such as a cushion and keep the sheet in a fixed form (for example, Patent Document 1).
[0008]
[Patent Document 1]
JP-A-1-230303
[Problems to be solved by the invention]
However, with the cushion 5 in which a fluid is put into the inside of the bag body 3 serving as the sealing portion 2 by welding the periphery, when a wheelchair is used, many people with a physical disability are required. Since the user sits down on the cushion 5, a large force is applied to the surrounding sealing portion 2 via the fluid inside the cushion 5, and the sealing portion 2 is easily damaged.
[0010]
For this reason, there is also a problem that the sealing portion 2 must be reinforced to withstand an impact, or a high-strength special material or a bag having a special sealing structure must be prepared.
[0011]
The present invention has been made in view of the problems of the related art, and provides a cushioning property with a gel-like substance to uniformly support the buttocks. It is intended to provide a cushion which is not damaged or its durability is impaired.
[0012]
[Means for Solving the Problems]
The cushion according to claim 1 of the present invention, which solves the problem of the prior art, provides a sealing portion by connecting the front and rear ends of an airtight and watertight sheet, and also provides both ends of the sheet and an inner portion thereof. And a double-sided sealing portion is formed in a bag shape, a hanging cloth member connecting the upper and lower sheets of the bag shape is provided, and a cushion body containing a gel-like substance therein, and a cushion body of the cushion body are provided. It is characterized by comprising a core material to which the cushion body which is applied to the back surface and bent inside the double sealing portion is attached, and a cover which covers the cushion body attached to the core material. .
[0013]
According to this cushion, a bag-like cushion body provided with double sealing portions at both side ends and an inner portion of the airtight and watertight sheet is double-sealed on a core material applied to the back surface thereof. In addition to being folded inside the part, a hanging cloth member is provided, so that the impact when the user sits down can be mitigated by the hanging cloth member and can not be directly applied to the sealing part, and The gel-like substance placed inside the cushion body is not biased so that a part of the body can be uniformly supported without being pressed.
[0014]
In the cushion according to a second aspect of the present invention, in addition to the configuration according to the first aspect, the hanging cloth member is disposed in the left-right direction orthogonal to the front-rear direction of the cushion, while preventing the lower surface of the cover from shifting. It is characterized by having a projection.
[0015]
According to this cushion, the hanging cloth member is arranged in the left-right direction orthogonal to the front-rear direction of the cushion, and the impact on the sealing portion at the front and rear ends is reduced by the hanging cloth member, while the lower surface of the cover is shifted. A shift preventing portion for preventing the shift is provided to prevent the cushion from shifting from the seat.
[0016]
Further, in the cushion according to claim 3 of the present invention, in addition to the configuration according to claim 1 or 2, the cushion body attached to the core is covered with an elastic cushion member, and the cushion body is covered by covering the outside of the elastic cushion member. A cover is provided.
[0017]
According to this cushion, the cushion main body attached to the core material is covered with the elastic cushion member, and the cover is provided so as to cover the outside of the elastic cushion member, so that the cushioning property can be further improved by the elastic cushion member. Become like
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
1 to 4 relate to an embodiment of the cushion of the present invention, and FIGS. 1 (a) to 1 (e) are schematic perspective views showing a manufacturing process of the cushion main body, and FIG. 2 is an attachment of the cushion main body to a core material. 3A and 3B are a schematic perspective view of an elastic cushion member, and FIGS. 4A and 4B are an external perspective view and a cross-sectional view of the cushion.
[0019]
The cushion 10 is used, for example, mounted on a wheelchair seat, and includes a cushion body 11 in which a gel-like substance is put.
[0020]
As shown in FIG. 1 together with the manufacturing process, the cushion body 11 uses an airtight and watertight sheet 12 and welds the front and rear ends 12a and 12b together with a high-frequency welder or the like to form a sealing portion 13 so as to be airtight. At the same time, the upper and lower surfaces of both end portions 12c and 12d of the endlessly (annularly) connected sheet 12 having the sealing portion 13 positioned at the middle portion of the back surface are welded by a high frequency welder or the like. Sealing portions 14 and 14 are formed to be in an airtight and watertight state. Sealing portions 15 and 15 are formed in parallel with inside of sealing portions 14 and 14 of both side portions 12c and 12d of these sheets 12, and both side ends are formed. The portions 12c and 12d are formed with double sealing portions 14 and 15, respectively.
[0021]
As the airtight and watertight sheet 12, for example, a polyvinyl chloride sheet is used, and the degree of polymerization is preferably higher than about 1100 to 1300, which is about 1700 in terms of strength. For example, one having a size of about 0.5 mm is used.
[0022]
In addition, as the sheet 12, in addition to the above, a thermoplastic synthetic resin sheet such as polyvinyl chloride leather or tarpaulin, or a laminate of a thermoplastic rigid resin and a woven fabric can be used.
[0023]
In addition, the upper and lower surfaces of the seat 12 are welded to the cushion body 11 by a high-frequency welder or the like, and connected by a welding portion 16a. In the illustrated example, three hanging cloths 16 are attached at substantially equal intervals.
[0024]
The hanging cloth 16 is formed with a hole 16b penetrating the front and back sides (see FIG. 2) so that the gel-like substance put in the cushion body 11 can pass through and move.
[0025]
The hanging cloth 16 prevents the gel-like substance from being biased in the cushion main body 11 during use and prevents the cushion main body 11 from expanding beyond a certain level.
[0026]
As the hanging cloth 16, for example, the same material as the sheet 12 of the cushion body 11 is used, and also a material that can be welded by another high-frequency welder or the like is used.
[0027]
As a mounting structure of the hanging cloth 16, in addition to an I-beam method, an X-beam method, a waffle beam method, and the like, a method of mounting via a hanging cloth reinforcing piece disclosed in JP-A-1-230303 is adopted. .
[0028]
Further, the cushion body 11 is formed with a gel-like substance injection port 17 at a corner on the upper surface so that the cap body 18 can be hermetically sealed.
[0029]
In this manner, the bag-shaped cushion body 11 sealed with the sealing portions 13 at the front and rear ends of the seat 12 and the double sealing portions 14 and 15 at the left and right ends is a sealing portion at the left and right ends. A core material 19 is used to prevent the impact force from being applied to the 14 and 15 via the gel-like substance and to maintain the shape of the cushion body 11.
[0030]
As shown in FIG. 1C, the core material 19 is formed in a rectangular plate shape. For example, a polyethylene foam having a relatively low expansion ratio and a thickness of about 1 mm is used. .
[0031]
The size of the core member 19 is such that the length L1 in the front-rear direction is substantially the same as the length L of the cushion body 11, and the width B1 in the left-right direction orthogonal to this is the double sealing portion 14 of the cushion body 11. , 15 are smaller than the interval B between the sealing portions 15, 15.
[0032]
Thus, when the cushion body 11 is placed on the core member 19 and both end portions thereof are wound, the cushion body 11 is bent inside the sealing portion 15 to form a bent portion 21.
[0033]
As shown in FIG. 1D, the front side of the cushion body 11 and the core member 19 are placed on the core member 19 as shown in FIG. The cushion body 11 is wound so as to be bent further inside than the sealing portion 15 on the inner side to form a bent portion 21, and is removed by the hooks 20 (four in the illustrated example) previously attached to the cushion member 11 and the core member 19. Attach and integrate as possible.
[0034]
In the state where the cushion main body 11 is attached to the core member 19 with the hook 20 and the gel-like substance is put into the interior of the cushion main body 11 from the inlet 17 and sealed with the cap 18 as shown in FIG. Is bent at both ends of the core material 19 to form a bent portion 21 in which the upper and lower sheets 12 are almost in close contact with each other, and even when the user sits down on the cushion body 11, the gel-like substance is substantially bent at the bent portion 21. The movement is restricted by the squeezing effect of the closely-contacted narrow gap, and the impact pressure generated in the gel-like substance is prevented from being directly applied to the sealing portion 15.
[0035]
Thereby, damage to the sealing portion 15 of the cushion body 11 can be prevented, and durability can be improved.
[0036]
Therefore, it is preferable that the gel-like substance filled in the cushion main body 11 has a certain degree of viscosity higher than that of a liquid such as water, so that the speed at which pressure generated when sitting on the cushion main body 11 is transmitted can be reduced. .
[0037]
In the cushion 10, when the cushion body 11 is placed on a wheelchair seat, the bent portions 21 of the cushion body 11 are positioned on both sides, and the hanging cloth 16 is positioned parallel to the left-right direction. With this position, the stability when sitting down is improved.
[0038]
Further, in the cushion 10, the cushion body 11 attached to the core 19 is covered with the elastic cushion member 22.
[0039]
As shown in FIG. 3, for example, the elastic cushion member 22 is adhered with an adhesive or the like so as to cover the upper and lower sides of the frame 22a with the plates 22b and 22c. It is designed to communicate with the inside of the frame 22a without bonding any one surface.
[0040]
Then, as shown in FIG. 3 (b), the non-adhesive surface 22d is deformed so as to open and expand vertically, and the cushion body 11 integrated with the core member 19 is put into the frame 22a from this portion. The state is covered with the elastic cushion member 22.
[0041]
Such an elastic cushion member 22 is made of, for example, urethane foam, and the upper plate 22b serving as the upper surface of the cushion 10 is made softer than the other frame 22a and the lower plate 22c of the lower surface, so that the seating comfort is improved. It is designed to be compatible with shape retention.
[0042]
The elastic cushion member 22 may use urethane or another synthetic resin foam.
[0043]
In this cushion 10, as shown in FIG. 4, a cover 23 is provided so as to cover the outside of the elastic cushion member 22.
[0044]
The cover 23 has a fastener attached to at least one of the four sides (three sides in the illustrated example) so that it can be opened and closed, and the cover 23 can be removed when it becomes dirty. Then, as the anti-slip portion 24, a cloth which has been subjected to dot processing by a synthetic resin such as urethane or acrylic is used on the bottom surface of the cover 23 in contact with the wheelchair seat. A carrying handle 25 is provided on the bottom surface of the cover 23 so that it can be easily attached / detached / transported when the wheelchair is folded.
[0045]
According to the cushion 10 configured as described above, even when the user sits down on the cushion 10, the movement of the gel-like substance in the cushion main body 11 is restricted by the narrowing effect of the narrow gap almost adhered at the bent portion 21, and the gel is not gelled. The impact pressure generated in the substance is prevented from being directly applied to the sealing portion 15.
[0046]
Thereby, damage to the sealing portion 15 of the cushion body 11 can be prevented, durability can be improved, and the body can be evenly supported by the gel-like substance without any one side.
[0047]
Furthermore, in the cushion 10, since the elastic cushion member 22 is provided so as to cover the outside of the cushion main body 11, the cushioning property can be further improved and the sitting comfort can be improved.
[0048]
Further, in the cushion 10, a cover 23 is provided so as to cover the entire outermost portion, and a dot processing by a synthetic resin is performed on a bottom surface thereof as a slip prevention portion 24, so that the cushion 10 is stably mounted on a wheelchair seat. Since the handle 25 is attached to the back surface, the handle 25 can be easily attached and detached or carried by holding the handle 25 with one hand.
[0049]
In this embodiment, the cushion main body 11 is covered with the elastic cushion member 22 and the cover 23 is provided so as to further cover the outside thereof. However, the elastic cushion member 22 is not necessarily required, and the cushion main body is omitted. 11 may be directly covered with the cover 23 to form a cushion.
[0050]
Further, in a case where a stable mounting state can be maintained without providing the slip prevention portion 24 by the material of the cover 23 or the material of the seat on which the cushion is mounted, the slip prevention portion of the cover is omitted. It is also possible.
[0051]
Further, in the above-described embodiment, a cushion placed on a wheelchair seat has been described as an example. However, the present invention is not limited to this and can be applied to cushions of other seats and chairs.
[0052]
【The invention's effect】
According to the cushion according to the first aspect of the present invention, as described above in detail with one embodiment, double sealing portions are provided at both side ends and the inner side of the airtight and watertight sheet. The bag-shaped cushion body is bent and attached to the core material applied to the back surface inside the double sealing portion, and a hanging cloth member is provided inside. The impact can be mitigated by the hanging cloth member, and the pressure of the gel-like substance can be prevented from being directly applied to the sealing portion, so that the sealing portion can be prevented from being damaged and the durability can be improved.
[0053]
Further, the gel-like substance placed inside the cushion main body can be prevented from being biased by the hanging cloth member, and the cushion body containing the gel-like substance can uniformly support a part of the body without pressing.
[0054]
Further, according to the cushion according to claim 2 of the present invention, the suspension cloth member is arranged in the left-right direction orthogonal to the front-rear direction of the cushion, and the displacement preventing portion for preventing displacement is provided on the bottom surface of the cover. Therefore, the impact on the sealing portion at the front and rear ends can be reduced by the hanging cloth member, and the cushion can be prevented from being displaced from the seat by the displacement prevention portion on the lower surface of the cover.
[0055]
Further, according to the cushion according to the third aspect of the present invention, the cushion body attached to the core is covered with an elastic cushion member, and the cover is provided so as to cover the outside of the elastic cushion member. The cushion property can be further improved by the cushion member.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a manufacturing process of a cushion body according to an embodiment of the cushion of the present invention.
FIG. 2 is a partially enlarged cross-sectional view of a mounting portion of a cushion body to a core material according to an embodiment of the cushion of the present invention.
FIG. 3 is a schematic perspective view of an elastic cushion member according to an embodiment of the cushion of the present invention.
FIG. 4 is an external perspective view and a cross-sectional view of the cushion according to the embodiment of the cushion of the present invention.
FIG. 5 is a schematic perspective view showing a conventional cushion manufacturing process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cushion 11 Cushion main body 12 Airtight watertight sheet 13 Sealing part (front and rear end parts)
14 sealing part (left and right outer end parts)
15 Sealing part (left and right inner ends)
16 Hanging cloth (hanging cloth member)
17 Injection port 18 Cap 19 Core material 20 Hook 21 Bend portion 22 Elastic cushion member 23 Cover 24 Anti-slip portion 25 Handle L1 Core material length B1 Core material width L Cushion body length B Sealing portion 15 interval X Left-right direction Y Front-rear direction

Claims (3)

A sealing portion is provided by connecting the front and rear ends of the airtight and watertight sheet, and a double sealing portion is provided on both side edges and the inner side of the sheet to form a bag. A cushion body that provides a hanging cloth member that connects the upper and lower sheets, and a gel substance is placed inside,
A core material to which the cushion body, which is applied to the back surface of the cushion body and bent inside the double sealing portion, is attached;
And a cover for covering the cushion body attached to the core material. The cushion according to claim 1, wherein the suspension cloth member is arranged in a left-right direction orthogonal to a front-rear direction of the cushion, and a shift prevention unit for preventing a shift is provided on a lower surface of the cover. 3. The cushion according to claim 1, wherein the cushion body attached to the core is covered with an elastic cushion member, and the cover is provided so as to cover the outside of the elastic cushion member.

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