JP2023060752A - Chiropractic cushion - Google Patents

Abstract

To provide a chiropractic cushion for allowing a posture of a seated person to be suitably kept in a correct posture.SOLUTION: A chiropractic cushion 10 includes: a cushion body 11 formed by a cushion material; and a board 12 arranged inside the cushion body 11. The cushion body 11 includes: a support part 13 for supporting hip parts and thigh parts of a seated person; and a swelling part 14 swelled upward from a rear part of the support part 13. The board 12 is arranged to be extended in a front and rear direction and in a right and left direction. Cushion layers 18, 19 by the cushion material are formed on both of upper and lower sides holding the board 12 between them. In the board 12, its front end part is positioned on a lower side of the thigh parts of the seated person supported by the support part 13, and a rear side part 12b including its rear end part enters the swelling part 14 by upward deformation toward a rear side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a massage cushion.

2. Description of the Related Art Conventionally, there has been known a body massage cushion that is placed on the seat surface of a chair or the like and used to adjust the posture of a seated person. As such an osteopathic cushion, for example, Patent Document 1 discloses a cushion whose entire cushion is made of a cushioning material such as urethane foam. This body shaping cushion includes a seat portion that supports the buttocks of the seated person, and a back portion that supports the lower back portion of the seated person.

JP 2014-012130 A

By the way, when a seated person performs desk work, the seated person may sit while leaning forward. In this case, the pelvis of the seated person is tilted backward, and the posture of the seated person may deteriorate. Therefore, in such a case, it is conceivable to use the cushion for manipulative treatment of Patent Document 1 to support the pelvis from the rear by the back, thereby maintaining the correct posture of the seated person.

However, since the cushion for manipulative treatment of Patent Document 1 is entirely formed of a flexible cushioning material, even if an attempt is made to support the pelvis with the back, the back falls or collapses backward, and the pelvis is stabilized. may not be supported by Therefore, it is thought that it is difficult to maintain the correct posture of the seated person with the massage cushion of Patent Literature 1.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a body massage cushion that can suitably maintain the posture of a seated person in a correct posture.

In order to solve the above problems, the massage cushion of the present invention
A cushion for manipulative treatment that adjusts the posture of a seated person,
A cushion body formed of a cushion material is provided,
The cushion body is
a support for supporting the buttocks and thighs of the seated person from below;
a raised portion that rises upward from the rear portion of the support portion and supports the buttocks of the seated person from behind;
and
A board extending in the left-right direction and the front-rear direction is provided inside the cushion body,
A cushion layer made of the cushion material is formed on each of the upper and lower sides sandwiching the board,
The board has a front end portion positioned below the thighs of the seated person supported by the support portion, and a rear portion including a rear end portion of the board that is displaced upward as it goes rearward. getting into

According to the present invention, when the seated person sitting on the bodywork cushion leans forward, the seated person's center of gravity is positioned forward, and the seated person's thighs move from the seated person's thighs to the front end of the board via the cushion layer. load is applied. Then, the front portion of the board tilts downward, and along with this, the rear portion of the board rises forward inside the raised portion of the cushion body. As a result, the back portion of the board can support the buttocks of the seated person via the protuberance, thereby allowing the pelvis of the seated person to stand upright. Therefore, the posture of the seated person can be preferably maintained in a correct posture.

(a) is a plan view showing the body massage cushion, (b) is a front view, and (c) is a side view. (a) is a plan view showing a cushion main body, (b) is a front view, and (c) is a side view. (a) is a plan view showing the board, (b) is a front view, and (c) is a side view. FIG. 2 is an exploded perspective view showing the body care cushion in an exploded state; FIG. 11 is a side view for explaining the action of the body shaping cushion;

An embodiment embodying the present invention will be described below with reference to the drawings. FIG. 1 : (a) is a plan view showing the massage cushion 10, (b) is a front view, and (c) is a side view. 2, (a) is a plan view showing the cushion body 11, (b) is a front view, and (c) is a side view. 3, (a) is a plan view showing the board 12, (b) is a front view, and (c) is a side view. FIG. 4 is an exploded perspective view showing the massage cushion 10 in an exploded state.

The bodywork cushion 10 is placed on the seat surface of a chair, the floor, or the like, and the seated person sits on the seated bodywork cushion 10 (see FIG. 5). As shown in FIGS. 1(a) to 1(c), the massage cushion 10 includes a cushion body 11 and a board 12 provided inside the cushion body 11. As shown in FIGS. The cushion main body 11 is made of a cushioning material, such as urethane foam. In addition, the cushion body 11 has a symmetrical shape. Although not shown, the cushion body 11 is covered with a cushion cover.

As shown in FIGS. 2(a) to 2(c), the cushion body 11 includes a support portion 13 having a predetermined thickness and extending in a substantially horizontal direction, and a raised portion 14 rising upward from the rear portion of the support portion 13. have. The support portion 13 is a portion that supports the buttocks and thighs of the seated person from below, and has a substantially rectangular shape in a plan view. The upper surface of the support portion 13 is a seating surface on which a seated person sits. The upper surface of the support portion 13 extends generally horizontally, and more specifically, the central portion in the left-right direction is slightly raised upward on the front end side. In addition, the lower surface of the support portion 13 serves as a mounting surface to be mounted on a seat surface of a chair, a floor surface, or the like. The lower surface of the support portion 13 is a flat surface extending horizontally. Specifically, the entire lower surface of the support portion 13, and thus the entire lower surface of the cushion body 11, is flat.

The raised portion 14 is a portion that supports the buttocks of the seated person from behind, and is raised from the entire area of the support portion 13 in the left-right direction. The raised portion 14 raised from the support portion 13 has a raised height of about 80 to 120 mm. The front surface of the protuberance 14 is formed as an inclined surface that slopes backward, and is continuous with the upper surface of the support portion 13 via a smooth arc surface. Further, the front surface of the raised portion 14 has a gently curved shape that is recessed toward the rear.

The raised portion 14 has a recessed portion 16 that is recessed downward at the central portion in the left-right direction. The concave portion 16 is open on both sides in the front-rear direction. As a result, it is possible to ensure ventilation when the seated person is seated. In addition, the left and right portions of the raised portion 14 sandwiching the recessed portion 16 form a pair of mountain portions 17 formed in a mountain shape.

The board 12 is made of hard resin, such as ABS resin. As shown in FIGS. 1(a) to 1(c), the board 12 is entirely formed with a predetermined (constant) thickness, and is provided so as to expand in the front-rear direction and the left-right direction inside the cushion body 11. ing. The board 12 is arranged so as to cover most of the cushion body 11 in plan view. The board 12 has a bilaterally symmetrical shape, and is arranged so that the center portion in the left-right direction is positioned at the center portion in the left-right direction of the cushion body 11 . Also, the board 12 is elastically deformable.

Cushion layers 18 and 19 made of cushion material are formed on both upper and lower sides of the cushion body 11 with the board 12 interposed therebetween. Of the cushion layers 18 and 19 , the cushion layer 18 is the lower cushion layer 18 formed below the board 12 , and the cushion layer 19 is the upper cushion layer 19 formed above the board 12 . Both of the cushion layers 18 and 19 are formed over the entire area of the board 12 in plan view.

The lower surface of the lower cushion layer 18 is flat and forms part of the lower surface (back surface) of the cushion body 11 . The upper surface of the lower cushion layer 18 is curved along the curved shape of the board 12 . As a result, the entire upper surface of the lower cushion layer 18 overlaps the lower surface of the board 12 . The upper surface of the upper cushion layer 19 forms part of the upper surface (surface) of the cushion body 11 . The lower surface of the upper cushion layer 19 is curved along the curved shape of the board 12 . As a result, the entire lower surface of the upper cushion layer 19 is overlaid on the upper surface of the board 12 .

Here, in this embodiment, as shown in FIG. 4, the cushion main body 11 has a cushion upper portion 11a and a cushion lower portion 11b that are divided into upper and lower portions. The upper cushion portion 11a and the lower cushion portion 11b are integrated by bonding or heat welding with the board 12 interposed between them. Thus, in this embodiment, the cushion main body 11 containing the board 12, that is, the massage cushion 10 is manufactured. More specifically, a housing recess 21 for housing the board 12 is formed on the upper surface of the cushion lower portion 11b, and the cushion upper portion 11a and the cushion lower portion 11b are integrated with the board 12 housed in the housing recess 21. Note that the accommodation recess 21 may be formed on the lower surface of the cushion upper portion 11a instead of the cushion lower portion 11b.

Incidentally, the manufacturing method of the osteopathic cushion 10 does not necessarily have to be the manufacturing method described above. A manufacturing method in which the board 12 and the cushion body 11 are integrally formed may be adopted.

The board 12 has a front portion 12a including its front end and a rear portion 12b including its rear end. The front portion 12a of the board 12 is provided inside the support portion 13 of the cushion body 11 and extends substantially horizontally in the front-rear direction. The front end portion of the front portion 12a is positioned below the thighs of the seated person supported by the support portion 13 (see also FIG. 5). Further, the rear end of the front portion 12a is located at substantially the same position as the front end of the raised portion 14 in the front-rear direction.

A rear portion 12b of the board 12 is curved so as to be displaced upward toward the rear. Specifically, the rear portion 12b has a curved shape that is convex obliquely downward to the rear. The rear portion 12b enters the raised portion 14 from the support portion 13 of the cushion body 11, and its upper end is located above the central portion of the raised portion 14 in the height direction.

The board 12 has a curved shape that protrudes downward so that both ends in the left-right direction are positioned above the central side in the left-right direction. Specifically, the board 12 has the above-described curved shape over the entire area in the front-rear direction. In addition, the board 12 has a length in the left-right direction (that is, a lateral width) that increases toward the front, and more specifically, the length in the left-right direction increases continuously toward the front.

The rear portion 12b of the board 12 is formed with a notch 23 that is open at the rear end (in other words, the upper end). The notch 23 is formed in the center of the board 12 in the left-right direction and at a position facing the coccyx of the seated person. The notch 23 has a substantially elliptical shape extending in the front-rear direction (in other words, the up-down direction). Therefore, the lateral width (length in the left-right direction) of the notch 23 is smaller on the rear end side of the notch 23, that is, on the open side of the notch 23, than on the central side of the notch 23 in the front-rear direction. ing.

The left and right portions of the rear portion 12b sandwiching the notch portion 23 are inserted into the peak portions 17 of the raised portion 14, respectively. Further, the upper edge portions of the left and right side portions of the rear portion 12b are inclined downward toward the notch portion 23 in the left and right direction.

Next, the operation of the body shaping cushion 10 described above will be described with reference to FIG. FIG. 5 is a side view for explaining the action of the massage cushion 10. FIG. Here, it is assumed that the seated person uses the bodywork cushion 10 when he or she sits on a chair and performs desk work.

As shown in FIGS. 5(a) and 5(b), when using the body shaping cushion 10, the body shaping cushion 10 is placed on the seat surface of the chair S. As shown in FIGS. Then, the seated person H sits on the massage cushion 10 in the placed state. In this case, the seated person H sits with the buttocks and thighs placed on the support portion 13 . Also, at this time, the seated person H sits in a state in which the buttocks are pressed against the raised portion 14 from the front.

When the seated person H performs desk work, it is assumed that the seated person H sits while bending forward. In that case, the pelvis of the seated person H may tilt backward, and the posture of the seated person H may deteriorate. In this respect, according to the massage cushion 10 described above, when the seated person H leans forward and the center of gravity of the seated person H is positioned forward, as shown in FIG. The load of the seated person H acts on the front end of the board 12 from the thigh through the upper cushion layer 19 . Then, the front portion 12a of the board 12 tilts downward inside the support portion 13, and accordingly the rear portion 12b of the board 12 rises forward inside the raised portion 14 (rises). As a result, the rear portion 12b of the board 12 can support the buttocks of the seated person H through the protuberance 14, and thus the pelvis of the seated person H can be erected. Therefore, the posture of the seated person H can be preferably maintained in a correct posture.

Moreover, it is assumed that the pelvis of the seated person H tilts backward due to the seated person H tilting backward. In that case, the waist of the seated person H may be burdened. In this regard, according to the above-described massage cushion 10, as shown in FIG. Can receive. Therefore, it is possible to suppress the waist of the seated person H from being burdened.

According to the configuration of the present embodiment described in detail above, the following excellent effects are obtained.

- While the rear portion 12b of the board 12 is displaced upward as it goes rearward, the front portion 12a of the board 12 extends substantially horizontally in the front-rear direction. In this case, as the front portion 12a of the board 12 tilts downward, the rear portion 12b of the board 12 can be raised forward.

A notch portion 23 that is open at the rear end is formed in the rear portion 12b of the board 12 at a position facing the coccyx of the seated person H at the center in the left-right direction. In this case, when the rear portion 12b of the board 12 supports the buttocks (pelvis) of the seated person H, it is possible to prevent the coccyx of the seated person H from being pressed by the board 12 . In addition, since the notch portion 23 is formed in the rear portion 12b of the board 12, it is possible to suppress excessive support force acting on the buttocks from the rear portion 12b. As a result, the posture of the seated person H can be maintained in a comfortable state.

In addition, since both sides of the rear portion 12b of the board 12 sandwiching the notch portion 23 are separated to the left and right, when the seated person H turns his or her body to the left or right, the separated both side portions follow the direction. will deviate to Therefore, since the buttocks of the seated person H are supported from behind by the board 12, the seated person H can easily turn their body to the left and right.

- Since the protuberance part 14 has the recessed part 16 which dents below in the center part of the left-right direction, the seated person H can turn a body to right and left more easily.

・Since the length (width) of the board 12 in the left-right direction is longer toward the front, even if the seated person H sits with their legs spread or sits with their legs laid down, the seated person H cannot It is easy to apply a load from the thigh to the board 12 when bending forward. Therefore, regardless of how the seated person H sits, the rear portion 12b of the board 12 can be raised, and the pelvis of the seated person H can be erected.

The front portion 12a of the board 12 has a curved shape that protrudes downward so that both ends in the left-right direction are positioned above the central side in the left-right direction. In this case, the left and right ends of the board 12 can hold the thighs of the seated person H from both the left and right sides. Thereby, the posture of the seated person H can be adjusted so as to face the front.

Further, the surface of the lower cushion layer 18 provided on the lower side of the board 12 facing the front portion 12a of the board 12 is a curved surface along the curved shape of the front portion 12a. The front part 12a thus formed can be stably supported from below.

The width of the notch 23 is smaller on the open side (upper end side) of the notch 23 than on the central side of the notch 23 in the vertical direction. In this case, even in the configuration in which the notch 23 is provided in the rear portion 12b of the board 12, it is easy to secure the left-right length of the upper edge of the rear portion 12b, and the pelvis of the seated person H can be properly erected. can

The present invention is not limited to the above embodiments, and may be implemented as follows, for example.

- The form of the cushion main body 11 is not necessarily limited to that of the above embodiment. For example, the raised portion 14 may not be provided with the recessed portion 16 . Further, instead of the raised portion 14 having the recessed portion 16, a pair of raised portions may be provided so as to be spaced apart from each other to the left and right.

- As the cushion material forming the cushion main body 11, it is not always necessary to use urethane foam, and other cushion materials such as polyethylene foam may be used.

- The form of the board 12 is not necessarily limited to that of the above embodiment. For example, in the above-described embodiment, the board 12 has a curved shape that is curved in the left-right direction so that both ends in the left-right direction are positioned above the center side in the left-right direction. It is also possible to adopt a shape that does not curve sharply, that is, a shape that is located at the same height position over the entire area in the left-right direction.

- Although the notch 23 is formed in the rear portion 12b of the board 12 in the above embodiment, a hole may be formed instead of the notch 23 in order to suppress pressure on the coccyx.

- As a material of the board 12, it is not always necessary to use ABS resin, and other hard resin materials such as PP resin may be used. Also, the board 12 may be made of a metal material instead of the hard resin material.

DESCRIPTION OF SYMBOLS 10... Chiropractic cushion, 11... Cushion main body, 12... Board, 13... Support part, 14... Protruding part, 16... Concave part, 18, 19... Cushion layer, 23... Notch part.

Claims (6)

A cushion for manipulative treatment that adjusts the posture of a seated person,
A cushion body formed of a cushion material is provided,
The cushion body is
a support for supporting the buttocks and thighs of the seated person from below;
a raised portion that rises upward from the rear portion of the support portion and supports the buttocks of the seated person from behind;
and
A board extending in the left-right direction and the front-rear direction is provided inside the cushion body,
A cushion layer made of the cushion material is formed on each of the upper and lower sides sandwiching the board,
The board has a front end portion positioned below the thighs of the seated person supported by the support portion, and a rear portion including a rear end portion of the board that is displaced upward as it goes rearward. Chiropractic cushion inside. 2. The body shaping cushion according to claim 1, wherein the front portion of the board, which is on the front side of the rear portion, extends substantially horizontally in the front-rear direction. 3. The rear portion according to claim 1 or 2, wherein a cutout portion opened at the rear end portion is formed at a position facing the coccyx of the seated person at a center portion in the left-right direction. Chiropractic cushion. 4. The body shaping cushion according to claim 3, wherein the protuberance has a recess recessed downward at the central portion in the left-right direction, or a pair of the protuberances are provided spaced apart in the left-right direction. The body shaping cushion according to any one of claims 1 to 4, wherein the board is formed such that the length in the left-right direction increases toward the front. In the board, the front portion on the front side of the rear portion has a curved shape that protrudes downward so that both ends in the left-right direction are positioned above the center side in the left-right direction,
6. The cushion layer according to any one of claims 1 to 5, wherein the surface facing the front portion of the cushion layer on the lower side of the board is a curved surface that follows the curved shape of the front portion. Body cushion.

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