JP2023086928A - Cushion device and cushion material - Google Patents

Abstract

To provide a cushion device capable of more effectively transmitting to the body of a user, a push-up motion by a mechanism for bending a cushion material with a projection as a surface on which the body of the user is placed.SOLUTION: A mattress 10 as an example of a cushion device comprises an urethane layer 17 as a cushion material having a placement surface of a user, and an air cell 31 included in a mechanism for bending the cushion material in a direction crossing the placement surface. The urethane layer 17 has a plurality of first parts (crest part 18A) extending in a Y direction as an example of a first direction in a surface inner direction, and second parts (groove part 18B) integrally formed with the first parts between the plurality of first parts, and more deformable than the first parts.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to cushioning devices and cushioning materials.

Patent Document 1 discloses a mat-type massage machine having a mat main body including a plurality of divided bodies arranged along the height direction of the user, and air cells provided in each of the divided bodies. It is This massage machine lifts a part of the body of the user lying on the massage machine by independently controlling the expansion of a plurality of air cells.

JP 2017-143939 A

In a mat-type massage machine such as that disclosed in Patent Document 1, unless the expansion of the air cells is properly transmitted to the user through the mat, the user's body cannot perform the intended motion. In particular, when making the user's body perform complicated movements, it is important to effectively transmit the lifting motion of the mat lifting mechanism such as an air cell to the user's body.

According to one embodiment, a cushion device includes a cushion material having a user placement surface, and a mechanism for bending the cushion material in a direction intersecting the placement surface. a plurality of first portions extending in a first direction in the in-plane direction of the surface; and a second portion formed integrally with the first portions between the plurality of first portions and more easily deformable than the first portions. have.

According to another embodiment, the cushion material has a user placement surface, and includes a plurality of first portions extending in a first in-plane direction of the placement surface, and a plurality of first portions. and a second portion that is more deformable than the first portion integrally formed with the first portion between.
Further details are described as embodiments below.

FIG. 1 is a perspective view showing an outline of a configuration of a sleep device according to an embodiment; FIG. FIG. 2 is a block diagram showing an outline of the configuration of the sleep device. FIG. 3 is an exploded perspective view of a mattress included in the sleeping device; FIG. FIG. 4 is a diagram for explaining the state of arrangement of air cells in a mattress. FIG. 5 is a schematic diagram of a portion of the urethane layer that makes up the mattress. FIG. 6 is a diagram for explaining a specific example of a stretch course stored in a memory included in the control unit of the sleep device. FIG. 7 is a diagram for explaining the influence of the lines provided on the urethane layer on the deformation of the urethane layer. FIG. 8 is a diagram for explaining the influence of the lines provided on the urethane layer on the deformation of the urethane layer. FIG. 9 is a schematic diagram showing the structure of a mattress according to a comparative example. FIG. 10 is a schematic diagram for explaining the structure of the mattress according to the second embodiment. FIG. 11 is a schematic diagram showing another example of the structure of the urethane layer. FIG. 12 is a schematic diagram showing another example of the structure of the urethane layer. FIG. 13 is a schematic diagram showing another example of the structure of the urethane layer. FIG. 14 is a schematic diagram showing another example of the structure of the urethane layer.

[1. Outline of cushioning device and cushioning material]

(1) A cushion device included in the present embodiment includes a cushion material having a user placement surface, and a mechanism for bending the cushion material in a direction intersecting the placement surface. a plurality of first portions extending in a first direction in the in-plane direction of the mounting surface; and a second portion integrally formed with the first portions between the plurality of first portions, the second portion being more deformable than the first portions. and have

A cushioning device is a device having a cushion, and in this case, a device having a cushion including a cushioning material having a surface on which a user rests. This cushioning device is, for example, a mattress, a nursing bed, a massage chair, a chair, a vehicle seat, or the like.

A mechanism for bending the cushion material in a direction intersecting the mounting surface is, for example, a mechanism for pushing up the cushion material when the mounting surface is the upper surface. A mechanism for pushing up the cushion material includes, for example, an air cell. Instead of air cells, actuators or cells filled with fluid such as liquid (fluid cells) may be used. The actuators are, for example, fluid actuators such as motor driven actuators, air cylinders or hydraulic cylinders.

By forming the first portion and the second portion on the upper surface of the cushion material, a mechanism for bending the cushion material in a direction intersecting the mounting surface is provided in a second direction perpendicular to the first direction. The pushing force is absorbed by the second portion and is less likely to be transmitted. Therefore, the range in which the pushing force acts can be localized in the second direction. On the other hand, in the first direction, since the first portion functions as a rib that propagates the upward force, the upward force acts over a wide range. That is, the range in which the cushion material is pushed up can be made different between the first direction and the second direction. As a result, the user on the upper surface of the cushion material can effectively perform, for example, "twisting the waist" or "raising the upper body".

(2) Preferably, the second portion is a groove formed between the plurality of first portions. Since grooves and ridges (lines) extending in the first direction are formed on the upper surface of the cushioning material, when a user placed on the upper surface of the cushioning material is pushed up by inflation of an air cell or the like, the lines are pushed up. transform.

(3) Preferably, the first portion has a triangular cross section orthogonal to the first direction. As a result, the angle of the surface in contact with the user placed on the upper surface of the cushioning material deformed as the line is pushed up changes. Therefore, the user can feel the push-up of the cushioning material even when the cushioning material is in contact with the user.

(4) Preferably, the cushioning material is divided in a second direction orthogonal to the first direction. As a result, not only is the foldability and portability of the cushion material improved, but the propagation of the pushing-up force by the mechanism in the first direction is cut off. Thereby, the force of the mechanism for pushing up can be effectively applied to the user.

(5) Preferably, the first direction is the height direction of the user placed on the placement surface. As a result, in the direction perpendicular to the height direction, the force pushed up by the mechanism for bending the cushion material is absorbed by the groove portion of the line and is less likely to be transmitted. Therefore, the range in which the pushing force acts can be localized in the direction perpendicular to the height direction. On the other hand, in the height direction, the range over which the upward force acts because the line functions as a rib that propagates the upward force is extensive. In other words, the range in which the mattress is pushed up can be made different between the height direction and the direction perpendicular to that direction. As a result, the user on the upper surface of the mattress can effectively perform, for example, "twisting the waist" or "raising the upper body".

(6) Preferably, the cushioning material is a laminate including a first layer forming a mounting surface and a second layer formed of a material harder than the material of the first layer forming a back side of the mounting surface. Structure. By molding the first layer with a soft material, it is possible to ensure the cushioning properties of the first layer for the user. By providing a second layer molded from a harder material below the first layer, the range that can be pushed up by the underlying push-up mechanism is greater than without the second layer. As a result, the pressure per unit area applied to the first layer is reduced, and the material of the first layer is less likely to be crushed. Thereby, the force of the mechanism for pushing up can be effectively applied to the user. Further, when the cushioning material is composed only of the first layer made of a soft material, the first layer sinks too much, and the user may experience a feeling of bottoming out. The bottoming feeling is the contact feeling of the floor, resin plate, push-up mechanism, etc. received through a soft layer. The feeling of bottoming out is reduced by providing a relatively hard second layer.

(7) Preferably, the first portion and the second portion are provided in the first layer. Thereby, the force of the mechanism for bending the cushion material can be effectively applied to the user.

(8) The cushioning material included in the present embodiment is a cushioning material having a user placement surface, and includes a plurality of first portions extending in a first direction in the in-plane direction of the placement surface and a plurality of second portions. a second portion that is more deformable than the first portion integrally formed between the first portions. This cushion material is, for example, for a cushion device having a mechanism for bending the cushion material in a direction intersecting the mounting surface. That is, this cushion material is for a cushion device according to any one of (1) to (7). Therefore, by being used in this manner, the cushion material has the same effect as the cushion device described in (1) to (7).

[2. Examples of cushioning device and cushioning material]
[First embodiment]
<Configuration of sleep device>
FIG. 1 is a perspective view showing a schematic configuration of a sleep device 100 according to this embodiment. FIG. 2 is a block diagram showing an outline of the configuration of the sleep device 100. As shown in FIG. Note that the vertical direction (vertical direction) is the Z direction, one direction (horizontal direction) perpendicular to the Z direction is the X direction, and the direction perpendicular to the Z and X directions (front-rear direction) is the Y direction. In each direction, the direction toward the + side is called the + direction, and the direction toward the − side is called the − direction.

Referring to the figure, the sleeping device 100 includes a mattress 10 that is a body support and a control unit 40 that controls the sleeping device 100 . FIG. 3 is an exploded perspective view of the mattress 10. FIG. Mattress 10 is an example of a cushioning device.

The mattress 10 is installed on a floor surface or the like so that its upper and lower surfaces are horizontal and its longitudinal direction coincides with the Y direction. The +Z-oriented surface is the top surface, and the back surface thereof (-Z-oriented surface) is the bottom surface. The mattress 10 supports the user P lying on its upper surface. The mattress 10 has a urethane layer 17, air cells 31, a resin layer 16 as a support member for the urethane layer 17 and the air cells 31, and a fabric cover layer 60 as a surface member, which are laminated. The urethane layer 17 of the mattress 10 is a cushion material. The upper surface of the urethane layer 17, that is, the upper surface of the mattress 10 is the surface on which the user rests. The placement surface is not limited to the surface on which the user directly places, but means the surface on the user side placed on the mattress 10 . The cushioning material is, for example, foamed resin having cushioning properties. The foamed resin is, for example, urethane foam, and the urethane layer 17 is made of urethane foam. The air cell 31 and the resin layer 16 are mechanisms for pushing up the urethane layer 17 . Pushing up the urethane layer 17 refers to bending the urethane layer 17 in a direction crossing the upper surface, which is the mounting surface. Directions that intersect the top surface include the +Z orientation and generally the +Z orientation.

The mattress 10 is divided in the X direction so that the three parts of the first mat part 11, the second mat part 12, and the third mat part 13 are arranged in order in the Y direction. When the user P lies on the upper surface of the mattress 10 with his feet facing +Y and his head facing in the opposite direction (-Y), the first mat part 11 supports the head and shoulders of the user P, and the second mat part 12 is supposed to support the trunk, and the third mat part 13 is supposed to support the legs.

A connecting portion 14 having a cutout structure is formed on the lower surface side of the joint surface between the first mat portion 11 and the second mat portion 12 . A similar connecting portion 15 is formed on the upper surface side of the joint surface between the second mat portion 12 and the third mat portion 13 . Thereby, the mattress 10 can be folded in three.

The third mat portion 13 is formed by laminating a resin layer 16F, a urethane layer 17F, and a fabric cover layer 60 as a surface member. As shown in FIG. 3, between the urethane layer 17F and the fabric cover layer 60, a cover layer for the third mat portion 13 may be further laminated. This also applies to other mat portions. Two air cells 31C and 31To are arranged between the resin layer 16F and the urethane layer 17F.

The second mat portion 12 is formed by laminating a resin layer 16B, a urethane layer 17B, and a cloth cover layer 60. As shown in FIG. Four air cells 31HiL, 31HiR, 31L, and 31Th are arranged between the resin layer 16B and the urethane layer 17B. The air cells 31HiL and 31HiR arranged in parallel in the X direction are also referred to as the air cell 31Hi.

The first mat portion 11 is formed by laminating a resin layer 16H, a urethane layer 17H, and a fabric cover layer 60. As shown in FIG. Five air cells 31HeL, 31HeR, 31SL, 31SR, and 31B are arranged between the resin layer 16H and the urethane layer 17H. The air cells 31HeL and 31HeR arranged in parallel in the X direction are representatively called the air cell 31He, and the air cells 31SL and 31SR are representatively called the air cell 31S.

The air cell 31 is connected via an air tube 33 and an electromagnetic valve 34 to a pump box 32 arranged outside. As an example, a connector box 35 is provided at the Y-direction end of the third mat portion 13 . The connector box 35 has a connection port for connecting the air tube 33 extending from the pump box 32 , and connects the air tube 33 extending from the pump box 32 to the air tube 33 inside the mattress 10 via the connection port. The pump box 32 incorporates a pump (not shown). From the pump box 32 to the connector box 35 , in addition to the air tube 33 , distribution lines for supplying power to the electromagnetic valve 34 and the control unit 40 are also connected.

FIG. 4 is a diagram for explaining the arrangement state of the air cells 31 in the mattress 10. As shown in FIG. Referring to FIG. 4, when the user P lies face up on the upper surface of the mattress 10, the air cells 31HeL and 31HeR are placed on the left and right sides of the head of the user P, and the air cells 31SL and 31SR are placed below the left and right shoulders. , Air cells 31B under the back, air cells 31HiL and 31HiR at the left and right waist, air cell 31L under the center of the waist, air cell 31Th under the buttocks, air cell 31C under the back of both knees, air cell 31To on both sides. It is intended to be placed under the calf.

As an example, the control unit 40 is arranged at the end of the third mat portion 13 in the Y direction. The control unit 40 includes a CPU (Central Processing Unit) and a memory 20 (not shown), and controls the sleep device 100 as a whole. The memory 20 stores programs to be executed by the CPU, as well as data relating to the stretching course. A specific example of the stretch course will be described later.

The control unit 40 has a control section 43 that controls driving of the pump built in the pump box 32 and opening/closing of the electromagnetic valve 34 . The controller 43 opens the solenoid valve 34 and drives the pump box 32 , so that the air cell 31 connected to the released solenoid valve 34 among the plurality of air cells 31 expands, and the urethane layer 17 expands. overlapped with the inflated air cell 31 is pushed up. As a result, the part of the body of the user P lying on the upper surface of the mattress 10 that is in contact with the above part is lifted. The maximum expansion state of the air cell 31 can be maintained by the controller 43 continuing to drive the pump. Further, the controller 43 subsequently stops driving the pump and closes the electromagnetic valve 34, thereby maintaining the expanded state of the air cell 31, and as a result, part of the body of the user P is lifted. state is maintained.

The control unit 43 opens the solenoid valve 34 while the pump is not driven, so that the air in the air cell 31 connected to the opened solenoid valve 34 among the plurality of air cells 31 is exhausted, and the expansion occurs. Shrink. As a result, the portion of the urethane layer 17 overlapping the air cell 31 and pushed up returns to its original position. As a result, the part of the lifted body of the user P returns to its original position.

The control unit 40 has a transmission/reception section 44 that enables data transmission/reception with the smartphone 53 . The transmitter/receiver 44 wirelessly communicates with the smartphone 53, for example. Communication between the transmitting/receiving unit 44 and the smartphone 53 may be wired communication. The smartphone 53 is an example of a device that receives an input operation to the control unit 40 by the user P, and may be the remote controller 50 or the like as another example. The communication with the remote controller 50 may be wireless communication or wired communication, like the communication with the smartphone 53 . In the case of wired communication, for example, a communication box 51 is provided at the end of the first mat portion 11 in the -Y direction. The communication box 51 has a connection port for connecting a communication cable to an external device such as the remote control 50, and relays communication with the control unit 40 via the connection port.

<Structure of urethane layer>
FIG. 5 is a schematic view of part of the urethane layer 17, showing the urethane layer 17 placed horizontally as viewed from above. Referring to FIG. 5, urethane layer 17 has a two-layer structure consisting of a first layer 17a on the upper surface side and a second layer 17b on the lower surface side. The first layer 17 a is the layer facing the user P lying on the upper surface of the mattress 10 , and the second layer 17 b is the layer contacting the air cells 31 .

The upper surface of the first layer 17a has a plurality of first portions extending in a first in-plane direction, which is the horizontal direction of the upper surface of the mattress 10, and integrally formed with the first portions between the plurality of first portions. and a second portion that is more deformable than the first portion. In the example of FIG. 5, the in-plane direction is an arbitrary direction within the XY plane. The first direction is orthogonal to the direction in which the mattress 10 is divided. In this embodiment, the direction in which the mattress 10 is divided is the X direction, the first direction is the Y direction (FIG. 5), the first portion is the peak portion 18A extending in the Y direction, and the second portion is adjacent This is the groove portion 18B sandwiched between the peak portions 18A.

Preferably, as shown in FIG. 5, a plurality of grooves 18B are provided in parallel in the X direction. In the following description, a shape in which one or more pairs of peak portions 18A and groove portions 18B are alternately arranged is also called a line. Since the line is formed on the upper surface of the first layer 17a, when the user P lying on the upper surface of the mattress 10 is lifted by the expansion of the air cell 31, the line is deformed with the expansion of the air cell 31, thereby forming the first layer. The position of the layer 17a in contact with the user P changes. Since the peak portion 18A has a triangular cross section parallel to the XZ plane, the angle of the surface in contact with the user P changes when the position of the first layer 17a in contact with the user P changes. For this reason, the user P can feel that the mattress 10 is being pushed up even when the mattress 10 is in contact with the user.

The first layer 17a and the second layer 17b are each made of foamed resin such as urethane foam. For example, the first layer 17a and the second layer 17b are different in material or density. The material of the second layer 17b is harder than the material of the first layer 17a. By molding the first layer 17a with a soft material, it is possible to ensure the cushioning properties of the first layer 17a for the user P. On the other hand, if there is no second layer 17b and only the first layer 17a is made of a soft material, the expansion of the underlying air cells 31 crushes the material of the first layer 17a, causing the person to lie on the upper surface of the mattress 10. In some cases, the user P is not pushed up. Further, when lines are formed on the first layer 17a, when the material of the first layer 17a is crushed, it contacts the user P not by the line but by the surface, which may increase the sense of oppression to the user P. be.

In this respect, by providing the second layer 17b formed of a harder material below the first layer 17a, the range that is pushed up by the expansion of the underlying air cells 31 is wider than when there is no second layer 17b. Become. As a result, the pressure per unit area applied to the first layer 17a due to the expansion of the air cells 31 is reduced, and the material of the first layer 17a is less likely to be crushed. Thereby, the behavior of the air cell 31 can be effectively applied to the user P.

<Control by control unit>
A control section 43 of the control unit 40 controls driving of the pump and opening/closing of the electromagnetic valve 34 according to the stretch course stored in the memory 20 . FIG. 6 is a diagram for explaining a specific example of the stretch courses stored in the memory 20, showing "waist twist", "cross twist", and "upper body raise" among the stretch courses. It is a diagram. The figure shows the passage of time from left to right, with times t1, t2, t3, . . . In the figure, hatched air cells indicate that they are inflated, and non-hatched air cells indicate that they are not inflated.

Referring to the figure, in the “waist twist”, the control unit 43 inflates the air cells 31 below the left and right hips and the center of the waist at time t1, inflates the air cells 31 below the left waist and the center of the waist at time t2, and expands the air cells 31 below the left waist and the center of the waist at time t3. At time t4, the air cells 31 under the left waist and center waist are inflated, and at time t5, the air cells 31 under the right waist and center waist are inflated. By controlling the times t2 to t5, the waist of the user P is stretched by twisting it left and right. By controlling the time t1, the user P can adjust the position on the upper surface of the mattress 10 so that the waist is lifted by the air cell 31. As shown in FIG.

Referring to the figure, in the "cross twist", the control unit 43 inflates the air cells 31 under the left and right shoulders and the left and right hips at time t1, inflates the air cells 31 under the left shoulder and the right hip at time t2, and The air cell 31 under the right shoulder and left waist is inflated at t3, the air cell 31 under the left shoulder and right waist is inflated at time t4, and the air cell 31 under the right shoulder and left waist is inflated at time t5. By controlling the time t2 to t5, the user P is stretched in such a manner that the waist and shoulders are twisted to the left and right in opposite directions. By controlling the time t1, the user P can adjust the positions on the upper surface of the mattress 10 so that the left and right shoulders and the left and right hips match the positions lifted by the air cells 31 .

Referring to the figure, in the "raising the upper body", the control unit 43 inflates the air cells 31 on the left and right of the head, on the left and right shoulders, and on the lower back. By this control, a force acts on the user P in a direction to lift the upper half of the body.

<Effect of Embodiment>
In the mattress 10 included in the sleeping apparatus 100 according to this embodiment, one or more lines extending in the Y direction are formed in the first layer 17a of the urethane layer 17, which is a cushion material. 7 and 8 are diagrams for explaining the influence of the lines provided on the urethane layer 17 on the deformation of the urethane layer 17. FIG. 7 shows a cross section of the urethane layer 17 parallel to the XZ plane, and FIG. 8 shows a cross section of the urethane layer 17 parallel to the YZ plane.

FIG. 7 shows the behavior of the air cells 31HeL and 31HeR and the deformation of the urethane layer 17H, taking as an example the urethane layer 17H of the first mat portion 11 and the air cells 31HeL and 31HeR arranged below it and arranged in parallel in the X direction. It explains. 7, only one of the air cells 31HeL and 31HeR arranged in parallel in the X direction (the air cell 31HeL in the example of FIG. 7) expands, and the other air cell (the air cell 31HeL in the example of FIG. 7) expands. 31HeR) is not inflated, the urethane layer 17 directly above the air cell 31HeL is pushed up with the expansion of the air cell 31HeL in the cross section parallel to the XZ plane including the positions directly above the air cells 31HeL, 31HeR of the urethane layer 17. be done. On the other hand, the upward force due to the expansion of the air cell 31HeL is absorbed by the groove portion 18B of the line in the X direction and is difficult to propagate. Therefore, the range to be pushed up can be localized in the X direction.

FIG. 8 shows the behavior of the air cells 31HeR and 31SR and the deformation of the urethane layer 17H, taking as an example the urethane layer 17H of the first mat portion 11 and the air cells 31HeR and 31SR arranged in parallel in the Y direction below it. It explains. 8, only one of the air cells 31HeR and 31SR arranged in parallel in the Y direction (air cell 31HeR in the example of FIG. 8) expands, and the other air cell (air cell 31HeR in the example of FIG. 31SR) is not inflated, the urethane layer 17 directly above the air cell 31HeR is pushed up with the expansion of the air cell 31HeR in the cross section parallel to the YZ plane including the positions directly above the air cells 31HeR and 31SR of the urethane layer 17. be done. In addition, the peaks 18A of the line function as ribs for propagating the pushing force due to the expansion of the air cell 31HeR, and propagating in the Y direction. As a result, the range to be pushed up becomes wide in the Y direction.

As a comparative example of a configuration in which the range pushed up by the air cell 31 is localized in the X direction and widened in the Y direction, the configuration of FIG. 9 can be cited. The configuration according to the comparative example shown in FIG. 9 is divided into two in the X direction and three in the Y direction. , 12L and 13L. An air cell 31 is arranged in each mat portion.

By configuring the mattress 10 as the comparative example shown in FIG. 9, it is possible to cut off the propagation of the upward force due to the expansion of the air cells 31 in both the X direction and the Y direction. That is, each mat portion is pushed up by the expansion of the air cell 31, and the pushing force is not propagated to the adjacent mat portion.

Even if the mattress 10 has such a structure, it seems possible to control the propagation of the upward force due to the expansion of the air cells 31, as in the case of the mattress according to the first embodiment. However, in the configuration of FIG. 9, the foldability and portability of the mattress 10 are inferior. Therefore, considering foldability and portability, the mattress 10 according to the present embodiment has the configuration shown in FIGS. 1 to 5. FIG.

If the upward force due to the expansion of the air cell 31 acts over a wide range in the X direction, the urethane layer 17 may be entirely pushed up in the X direction due to the "waist twist" shown in FIG. As a result, it is not possible to effectively make the user P take different postures on the left and right.

On the other hand, since the pushing force due to the expansion of the air cell 31 is localized in the X direction (FIG. 7), the user P can be effectively placed in different postures such as the "waist twist" shown in FIG. can be made That is, at time t2, the left waist and the center of the waist are lifted, and the right waist is not lifted. Also, at time t3, the right waist and the center of the waist can be lifted, and the left waist can be prevented from being lifted. By repeating this, an effective waist twist is realized.

Also, if the upward force due to the expansion of the air cell 31 becomes localized in the Y direction, the urethane layer 17 may be pushed up in the Y direction only in the vicinity of just above the air cell 31 in the "upper body raising" shown in FIG. be. As a result, the user P cannot be effectively lifted in the height direction.

On the other hand, since the pushing force due to the expansion of the air cell 31 becomes wide in the Y direction (FIG. 8), it is possible to effectively move the user P in the height direction in "raise the upper body" shown in FIG. can lift.

Furthermore, since the mattress 10 is divided in the direction (X direction) orthogonal to the line extending direction (Y direction), the foldability and portability of the mattress 10 are improved. Propagation of the pushing force in the Y direction is cut off. As a result, in the "cross twist" shown in FIG. 6, etc., the user P can be effectively placed in different postures on the left and right and on the top and bottom.

That is, at time t2, the left shoulder can be lifted while the right shoulder is not lifted, and the right hip can be lifted while the left hip is not lifted. Furthermore, it is possible to lift the left shoulder while not lifting the left hip, and to lift the right hip while not lifting the right shoulder. At time t3, the right shoulder can be lifted while the left shoulder is not lifted, and the left hip can be lifted while the right hip is not lifted. Furthermore, it is possible to lift the right shoulder while not lifting the right hip, and to lift the left hip while not lifting the left shoulder. By repeating this, an effective cross twist is realized.

[Second embodiment]
The direction in which the lines extend (first direction) and the direction in which the mattress 10 is divided (second direction) orthogonal to the direction in which the lines extend are not limited to the Y direction and the X direction, respectively, and may be other directions. may As another example, as shown in FIG. 10, the direction in which the lines extend (first direction) is the X direction, and the direction in which the mattress 10 is divided (second direction) perpendicular to the direction in which the lines extend is the Y direction. There may be.

With such a configuration, the upward force due to the expansion of the air cell 31 acts locally in the Y direction and acts over a wide range in the X direction. The structure for such action is not limited to the lines formed in the first layer 17a of the urethane layer 17. FIG.

[Third Embodiment]
In the mattress 10 according to the first embodiment and the second embodiment, the first part and the second part of the upper surface of the first layer 17a are formed by the shape of the upper surface of the first layer 17a, respectively. 18A and grooves 18B. The first portion and the second portion are not limited to this configuration, and may be other examples such as those shown in FIGS. 11 to 14. FIG. 11 to 14 are views showing other examples of the structure of the first layer 17a of the mattress 10, and are schematic cross-sectional views of the mattress 10 taken along the XZ plane.

In the structure of the first layer 17a illustrated in FIG. 11, the first portions 19A and the second portions 19B are alternately arranged, and the second portions 19B are formed of a material that is more deformable than the first portions 19A. there is Alternatively, the first portion 19A and the second portion 19B are made of the same material, and the second portion 19B is made of a material having a lower density than the first portion 19A.

Alternatively, the first portion and the second portion may be implemented in stepped shapes with different thicknesses. The thicker one is the first part and the thinner one is the second part.

In the structure of the first layer 17a illustrated in FIG. 12, the upper surface of the first layer 17a is formed into a rectangular wave shape. In the structure of the first layer 17a in FIG. 12, peaks 21A and valleys 21B parallel to the top face alternately appear on the top surface of the first layer 17a, and the gap between the peaks 21A and valleys 21B is the first layer 17a. It is a shape connected by a plane 21C orthogonal to the upper surface of 17a. In this case, the thick peak 21A is the first portion, and the thin valley 21B is the second portion.

In the structure of the first layer 17a illustrated in FIG. 13, the upper surface of the first layer 17a is formed into a trapezoidal wave shape. In the structure of the first layer 17a shown in FIG. 13, peaks 22A and valleys 22B parallel to the top face alternately appear on the top surface of the first layer 17a. The hollow peak portion 22A has a shape that is connected to the slope 22C by a symmetrical slope 22D. In this case, the thick peak 22A is the first portion, and the thin valley 22B is the second portion.

The structure of the first layer 17a illustrated in FIG. 14 is formed such that the cross section of the upper portion of the first layer 17a is triangular and the cross section of the lower portion is rectangular. The structure of the first layer 17a shown in FIG. 14 includes a triangular portion 23D composed of slopes 23B and 23C facing each other with a point 23A as a vertex on the top surface of the first layer 17a, and a triangular portion 23D extending parallel to the top surface connecting the slopes 23C and 23B. It is a shape in which valleys 23E appear alternately. In this case, the thick triangular portion 23D is the first portion, and the thin valley portion 23E is the second portion.

The mattress 10 shown in the third embodiment as illustrated in FIGS. 11-14 also provides the same advantages as the mattresses 10 according to the first and second embodiments. That is, in the mattress 10 shown in the third embodiment as well, the range pushed up by the air cells 31 can be local in the X direction and wide in the Y direction.

[Fourth Embodiment]
Cushioning devices are not limited to mattresses only. Other examples include, for example, massage chairs, chairs, vehicle seats, nursing beds, and the like.

[Fifth Embodiment]
The arrangement of the mechanism for bending the cushion material in the direction intersecting the placement surface is not limited to the lower surface side of the urethane layer that is the cushion material. As another example, it may be placed inside the urethane layer and expanded at that position to lift the urethane layer on the upper surface side of the mechanism.

[3. Note]
According to another aspect of the present embodiment, the following cushion device is included. That is, according to one embodiment, a cushion device includes a cushion material having a user placement surface, and a mechanism for bending the cushion material in a direction intersecting the placement surface. It is a laminated structure including a first layer and a second layer formed of a harder material than the material of the first layer and forming the back side of the mounting surface.

The present invention is not limited to the above embodiments, and various modifications are possible.

10: Mattress 11: First mat portion 11L: Mat portion 11R: Mat portion 12: Second mat portion 12L: Mat portion 12R: Mat portion 13: Third mat portion 13L: Mat portion 13R: Mat portion 14: Connecting portion 15 : Connecting portion 16 : Resin layer 16B : Resin layer 16F : Resin layer 16H : Resin layer 17 : Urethane layer 17B : Urethane layer 17F : Urethane layer 17H : Urethane layer 17a : First layer 17b : Second layer 18A : Peak ( first part)
18B: Groove (second portion)
19A: First portion 19B: Second portion 20: Memory 21A: Mountain portion 21B: Valley portion 22A: Mountain portion 22B: Valley portion 22C: Slope 22D: Slope 23A: Vertex 23B: Slope 23C: Slope 23D: Triangular portion 23E: Valley 31 : Air cell 31B : Air cell 31C : Air cell 31He : Air cell 31HeL : Air cell 31HeR : Air cell 31Hi : Air cell 31HiL : Air cell 31HiR : Air cell 31L : Air cell 31R : Air cell 31S : Air cell 31SL : Air cell 31SR : Air cell 31Th : Air cell 31T o : Air cell 32: Pump box 33: Air tube 34: Solenoid valve 35: Connector box 40: Control unit 43: Control unit 44: Transceiver unit 50: Remote control 51: Communication box 53: Smartphone 60: Fabric cover layer 100: Sleeping device P: Use person

Claims (8)

a cushion material having a user placement surface;
a mechanism for bending the cushion material in a direction intersecting the mounting surface;
The cushion material includes a plurality of first portions extending in a first direction in the in-plane direction of the mounting surface, and the first portions formed integrally with the first portions between the plurality of first portions. and a second portion that is more deformable than the cushioning device. The cushioning device according to claim 1, wherein the second portion is a groove formed between the plurality of first portions. The cushion device according to claim 2, wherein the first portion has a triangular cross section perpendicular to the first direction. The cushion device according to any one of claims 1 to 3, wherein the cushion material is divided in a second direction orthogonal to the first direction. The cushion device according to any one of claims 1 to 4, wherein the first direction is the height direction of a user placed on the placement surface. The cushion material has a laminated structure including a first layer forming the mounting surface and a second layer formed of a material harder than the material of the first layer forming the back side of the mounting surface. The cushion device according to any one of claims 1 to 5. 7. The cushioning device according to claim 6, wherein said first portion and said second portion are provided in said first layer. A cushion material having a user placement surface,
a plurality of first portions extending in a first direction in the in-plane direction of the mounting surface; a second portion; and a cushioning material.

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