JP2024015734A - Cushion and adjustment member - Google Patents

Abstract

To provide a cushion and an adjustment member that can provide a preferable sitting feeling irrespective of a type of a chair to which the cushion is used.SOLUTION: A cushion 100 is used for a chair. The cushion 100 includes: a core material 1 including a seat part 2 with a hip support part 4 on which a hip part of a user is placed; and a fabric 20 for covering the core material 1. The fabric 20 includes an adjustment member housing part 25 capable of storing and removing an adjustment member 30 for adjusting a distance K1 between an outside surface 22 of the fabric 20 and an outside surface of the core material 1 between the fabric 20 and the core material 1.SELECTED DRAWING: Figure 6

Description

The present disclosure relates to a cushion and an adjustment member on which a user's buttocks rest.

JP 2020-48972A describes a seat cushion that can be placed on a chair. The seat cushion includes a cushion section that is placed on the seat of the chair, and a closure that covers between a plurality of legs located on the front side of the chair. The cushion portion has a rectangular shape in plan view. The closure body is removably attached to one side of the cushion portion in a plan view, and is attached so as to hang down from the side to the front and below.

In the seat cushion, the above-mentioned closure prevents warm air from escaping from the underside of the seat of the chair. The cushion portion is a cushion material covered with a cover. The cushion material used in the cushion portion is urethane, cotton, or the like. The cover of the cushion section is made of cloth in the form of a bag, and the cushion material can be put in and taken out.

JP2020-48972A

Incidentally, cushions used in chairs are known to have irregular shapes other than rectangular shapes in order to improve sitting comfort. However, even if the cushion has a well-thought-out shape, the comfort of sitting on the cushion depends on the chair in which the cushion is used.

That is, the current situation is that the hardness of the seat and the inclination angle of the seat may vary depending on the type of chair. Therefore, even if the cushion is carefully designed, its height or hardness may vary depending on the type of chair, and it may not be comfortable to sit on. Therefore, there is a need for a cushion that can provide good seating comfort no matter what kind of chair it is.

An object of the present disclosure is to provide a cushion and an adjustment member that can provide good sitting comfort regardless of the type of chair in which the cushion is used.

The cushion according to the present disclosure is a cushion used for a chair. The cushion includes a core material having a seat portion having a buttock support portion on which a user's buttock is placed, and a fabric covering the core material. The fabric has an adjustment member accommodating portion between the core and the core, into which an adjustment member for adjusting the distance between the outer surface of the fabric and the outer surface of the core can be inserted and removed.

In this cushion, the core material includes a seating portion, and the seating portion has a buttock support portion on which the user's buttock is placed. The cushion includes a fabric that covers the core material, and the fabric has an adjustment member accommodating portion between which the adjustment member can be taken in and taken out. The adjustment member adjusts the distance between the outer surface of the fabric and the outer surface of the core material by being moved in and out. Therefore, the distance from the fabric to the core material can be changed by putting the adjustment member in and taking it out of the adjustment member storage portion, thereby improving the sitting comfort of the user of the cushion who sits on the outer surface of the fabric. Therefore, even if the height or hardness of the seat of the chair changes depending on the type of chair in which the cushion is used, the height or hardness can be adjusted by moving the adjustment member in and out. As a result, sitting comfort can be improved regardless of the type of chair.

The adjustment member accommodating portion may be a lower accommodating portion formed between the lower surface of the core material facing vertically downward and the outer surface of the fabric. In this case, the height of the seating section can be changed by moving the adjustment member in and out of the lower storage section. Therefore, the height of the seat of the cushion can be changed depending on the height of the seat of the chair. Therefore, the comfort of sitting on the cushion can be improved regardless of the height of the seat of the chair.

The core material may include a lumbar support portion that abuts the lumbar region of the user seated on the seating portion from behind. The adjustment member receiving portion may be a rear receiving portion formed between the surface of the lumbar support portion facing away from the user and the outer surface of the fabric. In this case, the core material has a waist support part that contacts the user's waist from the rear, and a rear accommodation part is formed between the surface of the waist support part facing away from the user and the outer surface of the fabric. ing. Therefore, the distance from the backrest of the chair to the lumbar support part can be adjusted by moving the adjustment member into and out of the rear housing part. Therefore, since the inclination of the lumbar support portion with respect to the backrest of the chair can be adjusted by moving the adjustment member in and out, the sitting comfort can be further improved.

The adjustment member according to the present disclosure is an adjustment member for adjusting the distance between the outer surface of the fabric of the cushion and the outer surface of the core material of the cushion used in a chair. The distance between the outer surface of the fabric and the outer surface of the core material is adjusted by moving the adjustment member in and out of the adjustment member accommodating portion formed between the fabric and the core material.

This adjustment member can be taken in and out of an adjustment member accommodating portion formed between the core material and the fabric of the cushion, and by being taken in and out, the distance between the outer surface of the fabric and the outer surface of the core material is adjusted. Therefore, the distance from the fabric to the core material can be changed by putting the adjustment member in and taking it out from the adjustment member storage section. Therefore, it is possible to improve the sitting comfort of the user of the cushion seated on the outer surface of the fabric, so that even if the height or hardness of the seat of the chair changes depending on the type of chair in which the cushion is used, it can be adjusted easily. Height or hardness can be adjusted by moving parts in and out. Therefore, it is possible to improve sitting comfort regardless of the type of chair.

According to the present disclosure, comfort can be improved regardless of the type of chair in which the cushion is used.

It is a perspective view showing a core material of a cushion concerning an embodiment. 2 is a plan view showing the core material of FIG. 1. FIG. 2 is a bottom view showing the core material of FIG. 1. FIG. 3 is a sectional view taken along line AA in FIG. 2. FIG. FIG. 2 is a side view showing the core material of FIG. 1; FIG. 2 is a cross-sectional view showing the fabric, adjustment member accommodating portion, and adjustment member of the cushion according to the embodiment. 7(a) is a bottom view schematically showing the adjustment member accommodating portion of the cushion of FIG. 6. FIG. (b) is a bottom view schematically showing an adjustment member accommodating portion according to a modified example. (a), (b), (c), and (d) are sectional views of adjustment members showing various examples of adjustment members according to embodiments. It is a sectional view showing the cloth of the cushion, an adjustment member accommodating part, and an adjustment member concerning a modification.

Hereinafter, embodiments of a cushion and an adjustment member according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and redundant description will be omitted as appropriate. For ease of understanding, some parts of the drawings may be simplified or exaggerated, and the dimensional ratios and the like are not limited to those shown in the drawings.

In embodiments, the cushion is constructed from a flexible material. "Flexible material" refers to a cushioning material that deforms when a body is placed on it and receives a load. Cushions are used in chairs. A "chair" is something for the cushion user to sit on. The cushion includes a core material having a seat portion having a buttock support portion on which the user's buttock is placed, and a fabric covering the core material. When the cushion is "used in a chair," it means that the cushion is used in conjunction with a chair. For example, a cushion being "used on a chair" indicates that the cushion is attached to a chair, such as being placed on a chair or strapped to a chair. An example in which a cushion is placed on a chair will be described below.

"User" indicates a user of the cushion, for example, a person who sits on the cushion. The term "buttocks" refers to the swollen part of the lower back of the body, and is the part of the body located below the waist and above the thighs. "Sitting" indicates sitting on a cushion. The "seating part" refers to the part of the cushion that the buttocks come into contact with when sitting on the cushion. "Thigh" refers to the part of the thigh from the groin to the knee. The buttock support section includes, for example, a pair of ischial support sections. The "ischial bone" indicates the part located at the lowest part of the pelvis when the user is seated on the seating section.

“Core material” refers to the material that makes up the inside of the cushion. "Fabric" refers to the cloth that covers the core material. The fabric has an adjustment member accommodating portion between the core and the core, into which an adjustment member for adjusting the distance between the outer surface of the fabric and the outer surface of the core can be inserted and removed. The "adjusting member" refers to a member housed inside the fabric to adjust at least one of the height, inclination angle, and softness of the cushion.

As will be described in detail later, the "adjustment member" may include, for example, a sheet member made of a flexible member, a bag-like member into which air can be taken in and taken out, and a bag-like member into which a stuffing can be put in and taken out. That's it. "The distance between the outer surface of the fabric and the outer surface of the core material" indicates the thickness of the space formed between the fabric and the core material. The "adjustment member accommodating section" indicates a space formed inside the fabric and capable of accommodating the adjustment member. The "adjustment member housing section" may be a space formed between the fabric and the core material, or may be a bag-shaped portion of the fabric.

FIG. 1 is a perspective view showing a core material 1 of a cushion 100 (see FIG. 6) according to the present embodiment. As shown in FIG. 1, the core material 1 includes a seating part 2 extending in the horizontal direction and a waist support part 3 extending upward from the seating part 2. The core material 1 is made of a flexible material. For example, the core material 1 is made of urethane foam.

As an example, the core material 1 is formed by urethane molding. When the core material 1 is made of urethane foam and formed by urethane molding, the core material 1 made of a flexible material can be easily manufactured. The core material 1 is used, for example, while being accommodated in the fabric 20 (see FIG. 6) of the cushion 100.

Note that the above-mentioned flexible material includes, for example, a thermoplastic elastomer. The flexible material may be a material having enough elasticity to deform according to the load when the body is placed on it. The flexible material may be a resin (eg, polypropylene, polyester, or polyethylene) that deforms when a body is placed on it and subjected to a load. The type of flexible material can be changed as appropriate.

The seating portion 2 extends in a first direction D1 and a second direction D2 intersecting the first direction D1. The first direction D1 is the front-rear direction when viewed from the user sitting on the seating portion 2, and the second direction D2 is the left-right direction when viewed from the user sitting on the seating portion 2. The seating portion 2 has a thickness in a third direction D3 that intersects both the first direction D1 and the second direction D2. For example, the third direction D3 is a vertical direction.

Hereinafter, the front direction as seen from the user seated on the seating section 2 may be referred to as "front", "front side", or "front", and the opposite direction to the front direction may be referred to as "rear", "rear side", etc. ” or “rear”. However, these directions are for convenience of explanation and do not limit the position or orientation of each part.

FIG. 2 is a plan view of the core material 1. As shown in FIGS. 1 and 2, the seating section 2 has a buttock support section 4 on which the user's buttocks are placed, and a thigh support section 5 on which the user's thighs are placed. The buttock support part 4 and the thigh support part 5 are arranged so as to be lined up along the first direction D1. The buttock support section 4 has a pair of ischial bone support sections 6 that support the ischial bones of a user seated on the seating section 2.

For example, the seating portion 2 has a ventilation hole 2b. The ventilation hole 2b penetrates downward from the upper surface 4b of the buttock support section 4 or the upper surface of the thigh support section 5. The upper end of the inner wall defining the ventilation hole 2b may be rounded. In plan view, the plurality of ventilation holes 2b are arranged so as to be lined up from the rear to the front.

For example, in a plan view (a plan view when the lumbar support part 3 is positioned above the seating part 2), a plurality of (six as an example) ventilation holes 2b are provided on both sides (left and right sides) of the second direction D2. may be placed in each of the. For example, three ventilation holes 2b are arranged on each side of the second direction D2.

For example, two ventilation holes 2b are lined up along the second direction D2, and the distance between the two ventilation holes 2b lined up along the second direction D2 is from the buttock support part 4 to the thigh support part 5. It gets longer as you go (toward the front). As an example, the plurality of ventilation holes 2b are arranged in a V-shape when viewed from above.

For example, in the core material 1, the ischial bone support portion 6 (for example, a through hole 6c to be described later) is formed by urethane molding, and the ventilation hole 2b is formed by punching. In this case, the part for forming the ventilation holes 2b in the mold used for manufacturing the core material 1 can be made unnecessary, so that the shape of the mold can be simplified. Furthermore, when molding liquid urethane using the mold, an escape route for air in the liquid urethane can be secured, so that the core material 1 can be finished neatly.

The ischial support part 6 is formed on the upper surface 4b of the buttock support part 4 and is recessed with respect to the upper surface 4b. The buttock support part 4 has a pair of ischial support parts 6 lined up along the second direction D2. The ischial support part 6 has a recessed part 6b depressed from the upper surface 4b of the buttock support part 4. The shape of the ischial bone support portion 6 in plan view has a long axis and a short axis. For example, the shape of the ischial bone support portion 6 in a plan view is an ellipse (for example, an ellipse). However, the shape of the ischial bone support part 6 in plan view is not limited to an elliptical shape or an elliptical shape, but may be a rectangular shape, a rounded rectangular shape, a diamond shape, or a rounded diamond shape, and can be changed as appropriate. .

An extended line L1 of the long axis of one of the pair of ischial support parts 6 and an extended line L2 of the long axis of the other ischial support part 6 of the pair of ischial support parts 6 intersect with each other. There is. The intersection angle θ1 between the extension line L1 and the extension line L2 is, for example, 40° or more and 150° or less. The intersection angle θ1 may be 50° or more, 60° or more, 75° or more, or 90° or more. Further, the intersection angle θ1 may be 135° or less, 120° or less, or 110° or less. As an example, the intersection angle θ1 is 100°.

The intersection P between the extension line L1 and the extension line L2 is located closer to the thigh support part 5 (front) than the pair of ischial support parts 6. The intersection P is located closer to the thigh support portion 5 than the center of each ischial bone support portion 6 in plan view. The intersection P is located on the opposite side of the lumbar support part 3 when viewed from the pair of ischial support parts 6. As a result, the pair of ischial support portions 6 take on an inverted V-shape in plan view (plan view when the lumbar support portion 3 is oriented above the seating portion 2).

The distance between the centers of the pair of ischial support parts 6 (distance between the centers of the pair of ischial support parts 6) is, for example, 7 cm or more and 15 cm or less. As an example, the distance is 10 cm. The distance from the lumbar support part 3 to the center of the ischial support part 6 is, for example, 5 cm or more and 15 cm or less. As an example, the distance from the lumbar support part 3 to the center of the ischial support part 6 is 10 cm. When each length and each distance are within the ranges of the above values, the user's ischial bones can be fitted to each of the pair of ischial support portions 6 more suitably.

For example, each ischial support part 6 has a through hole 6c penetrating downward from the upper surface 4b of the buttock support part 4. Each ischial support part 6 has an inner wall defining a through hole 6c, and a tapered surface 6f located between the inner wall and the upper surface 4b. FIG. 3 is a bottom view showing the core material 1. FIG. As shown in FIGS. 2 and 3, the area of the ischial support portion 6 when viewed from above is larger than the area of the ischial bone support portion 6 when viewed from below.

The core material 1 has a lower surface 1b that contacts the mounting surface S (see FIG. 4) on which the core material 1 is placed. For example, the inner wall defining the through hole 6c connects the lower surface 1b and the tapered surface 6f to each other. At least one of the end of the inner wall of the through hole 6c on the lower surface 1b side and the end of the inner wall on the tapered surface 6f side may be rounded.

The tapered surface 6f forms a recess 6b that is depressed relative to the upper surface 4b. The tapered surface 6f is inclined so that the diameter of the opening end of the tapered surface 6f increases toward the upper surface 4b. For example, the area of the tapered surface 6f in plan view is larger than the area of the through hole 6c in plan view. The tapered surface 6f may include a curved surface that is rounded so that the opening end of the tapered surface 6f is rounded.

FIG. 4 is a cross-sectional view taken along line AA in FIG. 2. As shown in FIGS. 2 and 4, the seating portion 2 has an inclined surface 7 extending obliquely from the buttock support portion 4 toward the thigh support portion 5. As shown in FIGS. For example, the seating portion 2 has a pair of inclined surfaces 7 lined up along the second direction D2. For example, the inclined surface 7 has a linear shape in a cross section taken along a plane extending in the first direction D1 and the third direction D3. The inclination angle θ2 of the inclined surface 7 with respect to the lower surface 1b of the core material 1 is, for example, 5° or more and 15° or less.

When the inclination angle θ2 is 5° or more and 15° or less, the sitting bones of the user seated on the seating portion 2 can be made more difficult to shift forward. Note that, unlike the above example, in the cross section along the plane extending in the first direction D1 and the third direction D3, the slope surface 7 has a curved shape (for example, the slope angle θ2 becomes larger toward the thigh support portion 5). It may also have a curved surface shape.

FIG. 5 is a side view of the core material 1 viewed from the front. As shown in FIGS. 2, 4, and 5, the seating portion 2 is located between a pair of thigh support portions 5 and a pair of thigh support portions 5 lined up along the second direction D2. It has a convex portion 8. Each of the pair of thigh support parts 5 is located on the front side of the inclined surface 7.

The back side of the user's thigh is placed on the thigh support portion 5. That is, the thigh support part 5 supports the back side of the user's thigh. As shown in FIGS. 3 and 5, the thigh support portion 5 has a recess 5b that is recessed in the thickness direction of the core material 1 (third direction D3). The recessed portion 5b is formed on the lower surface 1b of the core material 1.

The core material 1 has a pair of recesses 5b, and for example, the pair of recesses 5b are provided at positions separated from each other. The depth of the recessed portion 5b becomes deeper as the distance from the waist support portion 3 increases (as it goes toward the front side). For example, the thigh support portion 5 has a recess 5b that defines a space between it and the placement surface S on which the core material 1 is placed. The mounting surface S is the upper surface of the seat of the chair. As an example, the space defined between the recess 5b and the mounting surface S is formed so as to expand toward the front.

The convex portion 8 indicates a portion protruding from the inclined surface 7. The width of the convex portion 8 in plan view becomes wider toward the front. For example, the shape of the convex portion 8 in plan view has a parabolic shape that widens toward the front. The height of the convex portion 8 increases toward the center of the core material 1 in the second direction D2.

For example, the seating portion 2 has a pair of convex portions 9 located at both ends of the inclined surface 7 in the second direction D2. The convex portion 9 is a portion that connects the waist support portion 3 and the thigh support portion 5 to each other. The convex portion 9 extends along the first direction D1. By providing the above convex portions 8 and 9, the thigh support portions 5 are formed at respective positions on both sides of the convex portion 8 in the second direction D2 between the pair of convex portions 9. The user's thigh can be easily placed on the thigh support portion 5.

The core material 1 has a slope portion 9c that slopes toward the center of the core material 1 in the second direction D2 as it goes from the convex portion 9 toward the lower surface 1b. The core material 1 has, for example, a pair of inclined portions 9c arranged along the second direction D2. As an example, the core material 1 has a boat shape that projects outward as it becomes farther away from the lower surface 1b.

The waist support portion 3 extends upward from the end (rear end) of the seating portion 2 in the first direction D1. The lumbar support portion 3 includes, for example, a general portion 10 extending in both the second direction D2 and the third direction D3, and a sacral support portion 11 located at the center of the general portion 10 in the second direction D2. The general portion 10 indicates a portion of the lumbar support portion 3 other than the sacral support portion 11.

As shown in FIGS. 2, 4, and 5, the sacral support portion 11 has a convex shape that projects forward. The sacral support part 11 projects forward from the general part 10. As an example, the shape of the sacral support portion 11 when viewed from the front has a long axis and a short axis. For example, the shape of the sacral support portion 11 when viewed from the front is an ellipse (for example, an ellipse).

For example, the sacral support portion 11 has a protruding surface 11d that is curved and protrudes forward. The height of the protruding surface 11d from the general portion 10 increases from the outer edge of the protruding surface 11d toward the inside of the protruding surface 11d. The sacral support portion 11 may have a recessed portion 11f that is recessed rearward from the protruding surface 11d. The recessed portion 11f is a region into which the user's sacrum of the cushion 100 enters.

The recessed portion 11f extends in the second direction D2 and the third direction D3. For example, the length of the recessed portion 11f in the third direction D3 is longer than the length (width) of the recessed portion 11f in the second direction D2. The shape of the recessed portion 11f viewed from the first direction D1 may be a groove shape (or an elliptical shape) extending in the third direction D3.

The recessed portion 11f includes a bottom surface 11g and an inner surface 11h that connects the bottom surface 11g and the protruding surface 11d to each other. When viewed from the first direction D1, the inner surface 11h has an annular shape surrounding the bottom surface 11g. The inner surface 11h may include an R surface that connects the bottom surface 11g and the protruding surface 11d.

In plan view, the bottom surface 11g is curved so as to be depressed backward as it becomes farther away from the end of the recessed portion 11f in the second direction D2. In a cross section (side cross section) perpendicular to the second direction D2, the recessed portion 11f (bottom surface 11g) is curved so as to be recessed toward the rear as it moves away from the end of the recessed portion 11f in the third direction D3.

As shown in FIG. 6, the above core material 1 is accommodated in the fabric 20 of the cushion 100. In the cushion 100, it is possible to improve the comfort of sitting on the cushion 100 by devising the shape of the core material 1, etc. However, the comfort of sitting on the cushion 100 may depend on the placement surface S of the chair on which the cushion 100 is placed.

For example, the hardness of the mounting surface S and the inclination angle of the mounting surface S may change depending on the type of chair. Even if the core material 1 has a well-thought-out shape, the height or hardness may change depending on the condition of the mounting surface S (or the type of chair), which may affect the comfort of sitting. be. Therefore, there is a need for a cushion 100 that provides good seating comfort no matter what kind of chair (placement surface S) it is on.

The cushion 100 includes a core material 1, a fabric 20, and an adjustment member 30, and the core material 1 and the adjustment member 30 can be inserted into and removed from the fabric 20. FIG. 6 is a diagram schematically showing a cross section of the cushion 100 when the cushion 100 is cut along a plane extending in the first direction D1 and the third direction D3. In FIG. 6, the illustration of the core material 1 is simplified.

For example, the fabric 20 has a fastener 21, and by opening the fastener 21, the core material 1 can be taken in and out of the fabric 20. As an example, the fastener 21 extends along the third direction D3 in the waist support part 3. However, the location of the fastener 21 is not limited to the above example, and may extend in the second direction D2 in the seating portion 2, for example.

FIG. 7(a) is a bottom view of the fabric 20. As shown in FIGS. 6 and 7(a), the fabric 20 has an adjustment member accommodating portion 25 between which the adjustment member 30 can be inserted and taken out between the fabric 20 and the core material 1. The adjustment member accommodating portion 25 is configured to allow an adjustment member 30 for adjusting the distance K1 between the outer surface 22 (lower surface 22b) of the fabric 20 and the outer surface (lower surface 1b) of the core material 1 to be inserted or removed. The adjustment member accommodating portion 25 is, for example, a lower accommodating portion 25A located below the core material 1.

The fabric 20 covers the entire core material 1, for example. The outer surface 22 of the fabric 20 includes a lower surface 22b that contacts the placement surface S, a front surface 22c extending upward from the front end of the lower surface 22b, and a rear surface 22d extending upward from the rear end of the lower surface 22b. Furthermore, the outer surface 22 includes a first upper surface 22 f located above the seating section 2 , a curved surface 22 g extending upward from the rear end of the first upper surface 22 f along the sacral support section 11 , and a curved surface 22 g located above the lumbar support section 3 . and a second upper surface 22h located thereon.

The adjustment member housing section 25 has a housing space 26 for the adjustment member 30 into which the adjustment member 30 can be taken in and out. For example, the adjustment member accommodating portion 25 has a plurality of accommodating spaces 26, and each of the plurality of accommodating spaces 26 can accommodate the adjusting member 30. The adjustment member storage section 25 has an inner cloth 27 that contacts the core material 1 and an outer cloth 28 that contacts the mounting surface S, and a storage space 26 is defined by the inner cloth 27 and the outer cloth 28. Furthermore, in the present embodiment, the adjustment member accommodating section 25 has a partition cloth 29 that connects the inner cloth 27 and the outer cloth 28 to each other inside the adjustment member accommodating section 25, and the storage space 26 is divided by the partition cloth 29. It's partitioned off.

The adjustment member accommodating portion 25 has a fastener 25b that opens and closes the accommodating space 26. As an example, the plurality of accommodation spaces 26 include a first accommodation space 26b located below the thigh support part 5 and a second accommodation space 26c located below the buttock support part 4. The fasteners 25b are arranged corresponding to each of the first accommodation space 26b and the second accommodation space 26c.

That is, the adjustment member accommodating portion 25 has two fasteners 25b, one of which allows the first accommodating space 26b to be opened and closed, and the other of the two fasteners 25b to open and close the second accommodating space 26c. It is considered possible. As an example, the two fasteners 25b are arranged so as to line up along the first direction D1 at the end of the adjustment member accommodating portion 25 in the second direction D2.

However, the number and arrangement of the accommodation spaces 26, the arrangement of the fasteners 25b, and the number of fasteners 25b are not limited to the above example. FIG. 7(b) is a bottom view showing an adjustment member accommodating portion 25C according to a modification. As shown in FIG. 7(b), the adjustment member accommodating portion may have three or more accommodating spaces 26. For example, the number of fasteners 25b may be one. Further, the fastener 25b may be omitted, or a folded back may be provided at the entrance/exit of the adjusting member 30 of the adjusting member accommodating portion 25C, and the adjusting member 30 may be accommodated in the adjusting member accommodating portion 25C by the folded back. Further, the partition cloth 29 may have a three-dimensional gusset. Furthermore, instead of the partitioning cloth 29, the accommodation space 26 may be partitioned by a tataki quilt. In this case, for example, the inner cloth 27 is sewn to the outer cloth 28 with the adjustment member accommodating portion 25C loosened like a bag in order to ensure a spacious space. In this way, it is also possible to omit the partition cloth 29.

In the example of FIG. 7(b), the adjustment member accommodating portion 25C has four accommodating spaces 26. The four accommodation spaces 26 are lined up along the first direction D1. The adjustment member accommodating portion 25C has a plurality of partition cloths 29, and the plurality of partition cloths 29 are lined up along the first direction D1. Also in the adjustment member accommodating portion 25C, the adjustment member 30 can be taken in and out of each of the plurality of accommodating spaces 26.

For example, a plurality of adjustment members 30 can be inserted into and taken out of the accommodation space 26. In the example of FIG. 6, two adjustment members 30 are accommodated in each of the first accommodation space 26b and the second accommodation space 26c. The adjustment member 30 adjusts the distance K1 by being taken in and out of the adjustment member storage section 25 (for example, the storage space 26).

That is, the distance K1 becomes longer when the adjusting member 30 is accommodated in the adjusting member accommodating portion 25, and the distance K1 becomes shorter when the adjusting member 30 is removed from the adjusting member accommodating portion 25. Thereby, it is possible to adjust the thickness of the outer portion of the core material 1 in the cushion 100.

When the adjustment member storage section 25 has a plurality of storage spaces 26 and the adjustment member 30 can be taken in and out of the plurality of storage spaces 26, it is possible to partially change the height and softness of the cushion 100. . For example, if the number of adjustment members 30 in the first accommodation space 26b located on the front side is greater than the number of adjustment members 30 in the second accommodation space 26c located on the rear side, the thigh support portion 5 may be tilted further upward. Can be done. Moreover, when the number of adjustment members 30 in the first accommodation space 26b located on the front side is smaller than the number of adjustment members 30 in the second accommodation space 26c located on the rear side, the buttock support part 4 can be tilted further upward. .

For example, a plurality of types of adjustment members 30 having mutually different softness (or height) may be prepared. In this case, by housing the harder adjustment member 30 in the accommodation space 26, the part of the accommodation space 26 can be made harder, and by housing the softer adjustment member 30 in the accommodation space 26, the part of the accommodation space 26 can be made harder. It can be made soft. Further, by housing the higher adjustment member 30 in the housing space 26, the housing space 26 can be made higher, and by housing the lower adjustment member 30 in the housing space 26, the housing space 26 can be lowered. can.

The number of adjustment members 30 accommodated in the accommodation space 26 is adjusted, for example, by the user of the cushion 100. In this case, the user of the cushion 100 can adjust the number of adjustment members 30 by himself/herself. Further, a manual for how to insert the adjustment member 30 may be prepared. This manual describes, for example, the appropriate number of adjustment members 30 and how to insert them depending on the type and situation of the chair on which the cushion 100 is placed. In this case, the user can adjust the number and arrangement of the adjustment members 30 according to the situation while looking at the manual, so that the user can achieve appropriate sitting comfort by himself.

The number of adjustment members 30 accommodated in the accommodation space 26 may be adjusted by, for example, a cushion salesperson or a cushion expert. In this case, the number of adjustment members 30 is appropriately adjusted by the cushion salesperson, so that the salesperson or the like can provide appropriate seating comfort. Note that a salesperson or the like may adjust the number of adjustment members 30 while looking at the above-mentioned manual.

As mentioned above, there are various types of adjustment members 30. 8(a) to 8(d) are cross-sectional views of the adjusting member 30 showing various examples of the adjusting member 30. FIG. As shown in FIG. 8(a), the adjustment member 30 may be an adjustment member 30A that is a flexible sheet. The adjustment member 30A is made of a flexible material. The adjustment member 30A may have a sponge shape. The adjustment member 30A is, for example, a urethane sheet.

As shown in FIG. 8(b), the adjustment member 30 may be a bag-shaped adjustment member 30B in which the flexible contents 31 are accommodated. The flexible content 31 may be inserted into and removed from the adjustment member 30B. In this case, the thickness and softness of the adjustment member 30B can be adjusted. For example, the adjustment member 30B has a fastener 32, and the flexible contents 31 can be taken in and out from the adjustment member 30B with the fastener 32 open. The flexible content 31 is, for example, cotton (grain cotton, for example).

As shown in FIG. 8(c), the adjustment member 30 may be a bag-shaped adjustment member 30C in which the hollow contents 33 are accommodated. The adjustment member 30C may be configured such that the hollow contents 33 can be taken in and taken out. The adjustment member 30C has a fastener 32 like the adjustment member 30B. The hollow contents 33 are, for example, pipe material. Note that a solid content may be accommodated in the adjustment member 30C instead of the hollow content 33. The solid contents are, for example, buckwheat hulls, adzuki beans or cypress.

As shown in FIG. 8(d), the adjustment member 30 may be a bag-shaped adjustment member 30D filled with a plurality of elastic foams 34. A plurality of elastic foams 34 are packed in the adjustment member 30D in a compressed state to the maximum capacity of the adjustment member 30D. The elastic foam 34 has a rectangular parallelepiped shape when it is not packed into the adjustment member 30D and is at room temperature and pressure. The elastic foam 34 may have a rectangular parallelepiped (dice shape) shape made of urethane foam, for example. Since air is contained inside each elastic foam 34, the elastic foam 34 can be compressed and expanded.

For example, the adjustment member 30D has a plurality of internal spaces 35 in which the elastic foams 34 are housed, and the plurality of internal spaces 35 are partitioned from each other via a partition cloth 36. For example, the plurality of internal spaces 35 include a first internal space 35b facing the front side and a second internal space 35c facing the rear side.

The elastic foam 34 is housed in each of the first internal space 35b and the second internal space 35c, and the adjustment member 30D can adjust the amount of air in each of the first internal space 35b and the second internal space 35c. ing. The adjustment member 30D includes a first intake/exhaust valve 37b that adjusts the amount of air in the first internal space 35b, and a second intake/exhaust valve 37c that adjusts the amount of air in the second internal space 35c.

For example, the first intake/exhaust valve 37b is rotatable, and can be rotated by the user to open and close the first internal space 35b. When the first intake/exhaust valve 37b rotates to open the first internal space 35b, air enters the first internal space 35b from the first intake/exhaust valve 37b as the elastic foam 34 expands, and the adjustment member 30D The front part is thicker.

Furthermore, when an external force is applied to the adjustment member 30D with the first internal space 35b open, air is discharged from the first internal space 35b via the first intake/exhaust valve 37b, and in this state, the first intake/exhaust valve By closing 37b, the front portion of adjustment member 30D becomes thinner. In this way, the thickness of the front portion of the adjustment member 30D can be adjusted.

For example, the configuration of the second intake/exhaust valve 37c is the same as the configuration of the first intake/exhaust valve 37b. In this case, when the second intake/exhaust valve 37c rotates to open the second internal space 35c, air enters the second internal space 35c from the second intake/exhaust valve 37c as the elastic foam 34 expands. The rear portion of the adjustment member 30D is thicker. On the other hand, when an external force is applied to the adjustment member 30D with the second internal space 35c open, air is discharged from the second internal space 35c via the second intake/exhaust valve 37c, and in this state, the second intake/exhaust valve By closing 37c, the rear portion of adjustment member 30D becomes thinner.

In the adjustment member 30D, the thickness of each of the front part and the rear part can be adjusted individually. However, the adjustment member 30D may have one internal space 35 and one intake/exhaust valve. In this case, the partition cloth 36 can be omitted. Various examples of the adjustment member 30 have been described above. However, the aspect of the adjustment member can be further modified. For example, as shown in FIG. 6, the stuffing may be directly taken in and out of the storage space 26 of the adjustment member storage section 25. In this case, the "stuffing" is the adjustment member 30.

The above-mentioned "stuffing" is, for example, the aforementioned flexible content 31 such as cotton, hollow content 33 such as pipe material, or solid content such as buckwheat hulls. In this case, the thickness and softness of the cushion 100 can be freely adjusted by taking the stuffing in and out of the accommodation space 26. Further, for example, the adjustment member housing section 25 includes an intake/exhaust valve (an intake/exhaust valve similar to the first intake/exhaust valve 37b described above as an example), and air can be taken in and out of the housing space 26 via the intake/exhaust valve. It may be said that

Next, the effects obtained from the cushion 100 and the adjustment member 30 according to this embodiment will be described in more detail. In the cushion 100, the core material 1 includes a seating portion 2, and the seating portion 2 has a buttock support portion 4 on which the user's buttock is placed. The cushion 100 includes a fabric 20 that covers the core material 1, and the fabric 20 has an adjustment member accommodating portion 25 between the core material 1 and the adjustment member 30 into and out of which the adjustment member 30 can be inserted. The adjustment member 30 adjusts the distance K1 between the outer surface 22 of the fabric 20 and the outer surface of the core material 1. Therefore, the distance K1 from the fabric 20 to the core material 1 can be changed by inserting and removing the adjustment member 30 into and out of the adjustment member accommodating portion 25, so that the user of the cushion 100 who is seated on the outer surface 22 of the fabric 20 is comfortable to sit on. can be made good. Therefore, even if the height or hardness of the seat of the chair changes depending on the type of chair on which the cushion 100 is placed, the height or hardness can be adjusted by moving the adjustment member 30 in and out. As a result, sitting comfort can be improved regardless of the type of chair.

In this embodiment, the adjustment member accommodating portion 25 is a lower accommodating portion 25A formed between the lower surface of the core material 1 facing vertically downward and the outer surface 22 of the fabric 20. In this case, the height of the seating section 2 can be changed by taking the adjusting member 30 in and out of the adjusting member accommodating section 25 as the lower accommodating section 25A. Therefore, the height of the seating portion 2 of the cushion 100 can be changed depending on the height of the seat of the chair. Therefore, the comfort of sitting on the cushion 100 can be improved regardless of the height of the seat of the chair.

Next, a cushion 200 according to a modification will be described with reference to FIG. 9. A part of the configuration of the cushion 200 is the same as a part of the configuration of the cushion 100 described above. Therefore, hereinafter, explanations that overlap with those of the cushion 100 will be given the same reference numerals and omitted as appropriate. The cushion 200 includes a core material 1, a fabric 220, and an adjustment member 30, and the configuration of the fabric 220 is different from that of the fabric 20.

The fabric 220 includes the above-mentioned adjustment member accommodating portion 25 and an adjustment member accommodating portion 225 as a rear accommodating portion 225A located behind the waist support portion 3. The adjustment member accommodating portion 225 is configured to allow an adjustment member 30 for adjusting the distance K2 between the outer surface 22 (rear surface 22d) of the fabric 220 and the outer surface of the core material 1 to be taken in and out.

The adjustment member housing section 225 has a housing space 226 for the adjustment member 30 into which the adjustment member 30 can be taken in and out. For example, the adjustment member accommodating portion 225 has a plurality of accommodating spaces 226, and the adjusting member 30 can be accommodated in the plurality of accommodating spaces 226. The adjustment member accommodating portion 225 has an inner cloth 227 that contacts the core material 1 and an outer cloth 228 that contacts the front surface of the backrest of the chair, and a storage space 226 is defined by the inner cloth 227 and the outer cloth 228.

Furthermore, in this modification, the adjustment member storage section 225 has a partition cloth 229 that connects the inner cloth 227 and the outer cloth 228 to each other inside the adjustment member storage section 225, and the storage space 226 is divided by the partition cloth 229. It's partitioned off. Each of the plurality of accommodation spaces 226 can be opened and closed like each of the plurality of accommodation spaces 26 described above.

The plurality of accommodation spaces 226 are lined up along the third direction D3 (for example, the vertical direction), and the adjustment member 30 can be taken in and out of each of the plurality of accommodation spaces 226. For example, a plurality of adjustment members 30 may be able to be taken in and out of the accommodation space 226. The adjustment member 30 adjusts the distance K2 by being taken in and out of the adjustment member storage section 225 (for example, the storage space 226).

That is, the distance K2 becomes longer when the adjusting member 30 is accommodated in the adjusting member accommodating portion 225, and the distance K2 becomes shorter when the adjusting member 30 is removed from the adjusting member accommodating portion 225. Thereby, it is possible to adjust the thickness of the rear portion of the core material 1 in the cushion 200.

When the adjustment member storage section 225 has a plurality of storage spaces 226 and the adjustment member 30 can be taken in and out of the plurality of storage spaces 226, it is possible to partially change the inclination of the lumbar support section 3 of the cushion 200. be. For example, if the number of adjusting members 30 in the upper accommodation space 226 is greater than the number of adjustment members 30 in the lower accommodation space 226, the upper part of the waist support part 3 can be tilted more forward. Moreover, when the number of adjustment members 30 in the accommodation space 226 located on the upper side is smaller than the number of adjustment members 30 in the accommodation space 226 located on the lower side, the upper part of the waist support part 3 can be tilted further to the rear side.

As described above, in this modification, the core material 1 has the waist support part 3 that comes into contact with the waist of the user seated on the seating part 2 from behind. The adjustment member accommodating portion 225 is a rear accommodating portion 225A formed between the surface (rear surface) of the waist support portion 3 facing away from the user and the outer surface 22 of the fabric 220. Therefore, the core material 1 has the waist support part 3 that abuts the user's waist from the rear, and the rear side is accommodated between the surface of the waist support part 3 facing away from the user and the outer surface 22 of the fabric 220. A portion 225A is formed.

Therefore, the distance from the backrest of the chair to the lumbar support section 3 can be adjusted by moving the adjustment member 30 in and out of the rear storage section 225A. Therefore, the inclination of the lumbar support part 3 with respect to the backrest of the chair can be adjusted by moving the adjustment member 30 in and out, thereby making it possible to further improve the sitting comfort. In this modification, an example has been described in which the fabric 220 includes the adjustment member accommodating part 25 located below the core material 1 and the adjustment member accommodating part 225 located behind the core material 1. However, the fabric may not have the adjusting member accommodating part 25 but only have the adjusting member accommodating part 225.

The embodiments and modifications of the cushion and adjustment member according to the present disclosure have been described above. However, the present disclosure is not limited to the embodiments or modified examples described above, and can be modified as appropriate within the scope of the gist described in the claims. That is, the shape, size, number, material, and arrangement of each part of the cushion and adjustment member according to the present disclosure can be changed as appropriate within the scope of the above-mentioned gist.

For example, in the embodiment described above, the core material 1 including the seating portion 2 and the waist support portion 3 has been described. However, the shape, size, and material of the core material 1 can be changed as appropriate. For example, the height of the waist support section 3 can be changed as appropriate. For example, the height of the upper end of the lumbar support part 3 may be the height of the user's back, the height of the user's shoulders, or the height of the user's head. There may be one, and there is no particular limitation. In this case, the cushion can be used as a chair such as a gaming chair.

For example, the cushion may be a cushion in which the lumbar support part is foldable with respect to the seating part. In this case, the cushion can be used as an office chair, recliner or full-flat seat. The cushion may be a seat used in a transportation machine such as an automobile, a railroad vehicle, or an aircraft. As described above, the cushion may be a seat of a transportation machine, a gaming chair, or the like, or may be integrated with the chair. Furthermore, the cushion may be a cushion used for a chair for telework, a chair for study, a chair placed in an office space, or a chair for nursing care, and the use of the cushion can be changed as appropriate. It is.

DESCRIPTION OF SYMBOLS 1...core material, 1b...lower surface, 2...seating part, 2b...ventilation hole, 3...lumbar support part, 4...buttock support part, 4b...upper surface, 5...thigh support part, 5b...recessed part, 6...ischial bone Support part, 6b... recessed part, 6c... through hole, 6f... tapered surface, 7... inclined surface, 8, 9... convex part, 9c... inclined part, 10... general part, 11... sacral support part, 11d... protruding surface, 11f... hollow part, 11g... bottom surface, 11h... inner surface, 20... fabric, 21... fastener, 22... outer surface, 22b... lower surface, 22c... front surface, 22d... rear surface, 22f... first upper surface, 22g... curved surface, 22h ...Second upper surface, 25, 25C...Adjustment member accommodating part, 25A...Lower side accommodating part, 25b...Zipper, 26...Accommodating space, 26b...First accommodating space, 26c...Second accommodating space, 27...Inner cloth, 28 ...Outer cloth, 29...Inner partition cloth, 30, 30A, 30B, 30C, 30D...Adjustment member, 31...Flexible content, 32...Zipper, 33...Hollow content, 34...Elastic foam, 35...Inner space , 35b...first internal space, 35c...second internal space, 36...partition cloth, 37b...first intake/exhaust valve, 37c...second intake/exhaust valve, 100,200...cushion, 220...fabric, 225...adjustment member Accommodating part, 225A... Rear accommodating part, 226... Accommodating space, 227... Inner cloth, 228... Outer cloth, 229... Inner partition cloth, D1... First direction, D2... Second direction, D3... Third direction, K1 , K2...Distance, L1, L2...Extension line, P...Intersection, S...Placement surface, θ1...Intersection angle, θ2...Inclination angle.

Claims (4)

A cushion used for a chair,
a core material comprising a seating part having a buttock support part on which a user's buttock is placed;
A fabric that covers the core material;
Equipped with
The fabric has, between the core material and an adjustment member accommodating part, an adjustment member for adjusting the distance between the outer surface of the fabric and the outer surface of the core material.
cushion. The adjustment member accommodating part is a lower accommodating part formed between the lower surface of the core material facing vertically downward and the outer surface of the fabric.
The cushion according to claim 1. The core material has a waist support part that comes into contact with the waist of the user seated on the seating part from behind,
The adjustment member accommodating portion is a rear accommodating portion formed between the surface of the waist support portion facing away from the user and the outer surface of the fabric.
The cushion according to claim 1. An adjustment member for adjusting the distance between the outer surface of a fabric of a cushion used for a chair and the outer surface of a core material of the cushion,
The distance between the outer surface of the fabric and the outer surface of the core material is adjusted by being inserted into and removed from an adjustment member accommodating portion formed between the fabric and the core material.
Adjustment member.

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