Flexible temperature-dependent material laminated structure and flexible temperature dependent structure

Abstract

To provide a flexible temperature-dependent material laminated structure capable of varying absorption degree of pressure by a magnitude of a temperature, and, having pressure absorption degree to a magnitude of various temperatures and a flexible temperature-dependent structure having structure like this.SOLUTION: A plurality of layers are laminated, including a cushion layer (43) using a resin foam and a flexible temperature-dependent layer (42) using a flexible temperature-dependent material which is flexible and whose flexibility is temperature-dependent, wherein each layer is laminated so as to form a coated area (44) in which the first flexible temperature-dependent layer (42a) overlaps with the cushion layer, and a non-coated area (45) adjacent to the coated area where the first flexible temperature-dependent layer does not overlap with the cushion layer.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a flexible temperature-dependent material laminate structure and a flexible temperature-dependent structure, and more particularly to a flexible temperature-dependent material laminate structure and a flexible temperature-dependent structure formed by laminating multiple layers, including a flexible temperature-dependent layer that uses a flexible temperature-dependent material that is flexible and whose flexibility is dependent on temperature. [Background technology]

[0002] Conventionally, there are pressure buffering structures that use cushioning materials such as resin foam to buffer pressure applied by parts of the human body. For example, there is a vehicle seat that uses polyurethane foam resin foam to absorb downward pressure generated by the body of an occupant (Patent Document 1).

[0003] With such a pressure buffer structure, by varying the material, shape, dimensions, etc. of the cushioning material, various innovations can be made to improve characteristics such as how well the cushioning material absorbs force, the degree of sinking, the degree of rebound from the cushioning material, compatibility with the main body such as the vehicle body, and design. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-23140 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional pressure-cushioning structures can be given distinctive characteristics as a cushioning structure depending on the magnitude of the applied pressure, the direction of the applied pressure, the degree of pressure dispersion, etc. However, it is difficult for conventional pressure-cushioning structures to have distinctive characteristics depending on temperature conditions, such as the temperature of the object of pressure application and the external temperature. For example, in the case of Patent Document 1, it is not possible to change the degree of pressure absorption in a vehicle seat before an occupant gets in and the degree of pressure absorption when the occupant gets in and their body heat is transferred to the seat. As a result, a seat that feels hard when an occupant gets in remains hard thereafter, and a seat that feels soft when an occupant gets in remains soft thereafter.

[0006] In order to solve such problems, the present invention aims to provide a structure capable of changing the degree of pressure absorption depending on the temperature, and a structure having such a structure. [Means for solving the problem]

[0007] (1) The present invention provides a flexible temperature-dependent material laminate structure, characterized in that a plurality of layers including a cushion layer using a resin foam and a flexible temperature-dependent layer using a flexible temperature-dependent material that is flexible and whose flexibility depends on temperature are laminated together, and each of the layers is laminated to form a covered region in which the first flexible temperature-dependent layer overlaps with the cushion layer, and an uncovered region adjacent to the covered region in which the first flexible temperature-dependent layer does not overlap with the cushion layer.

[0008] In other words, the flexibility of the flexible temperature-dependent layer of the flexible temperature-dependent material laminate structure of the present invention increases with increasing temperature, so that when the cushion layer overlapping it is subjected to pressure, the cushion layer can undergo large elastic deformation together with the flexible temperature-dependent layer, thereby allowing the degree of pressure absorption to be changed depending on the temperature.

[0009] Furthermore, the cushion layer deforms in a direction other than the direction of pressure application, allowing it to freely deform in the direction of the uncovered region. Therefore, the cushion layer can deform significantly, resulting in a high degree of pressure absorption. For example, when downward pressure is applied to a flexible temperature-dependent material laminate structure that is flat in the left-right and front-rear directions during a temperature rise, the cushion layer attempts to deform in the left-right and front-rear directions, which are the directions of the uncovered region. Since the cushion layer does not overlap the uncovered region, it can deform significantly without interference from other cushion layers. Thus, the degree of pressure absorption can be significantly changed depending on the temperature.

[0010] Furthermore, the degree of pressure absorption can be adjusted by changing the thickness of the flexible temperature-dependent material. In this way, by changing the properties of the flexible temperature-dependent material laminate structure itself, the rate of change in the degree of pressure absorption with respect to temperature can be changed. This makes it possible to provide flexible temperature-dependent material laminate structures with various pressure absorption characteristics with respect to temperature.

[0011] (2) In addition, in the coated area and the uncoated area, the second flexible temperature-dependent layer may be laminated on the opposite side of the cushion layer from the first flexible temperature-dependent layer, and the first flexible temperature-dependent layer and the second flexible temperature-dependent layer may be welded to each other in part or all of the uncoated area.

[0012] In other words, because the cushion layer is sandwiched between the first flexible temperature-dependent layer and the second flexible temperature-dependent layer, the flexibility of both flexible temperature-dependent layers changes with an increase in temperature, allowing the entire cushion layer to absorb pressure uniformly. This allows the flexible temperature-dependent material laminate structure of the present invention to have the property of more regularly deforming in response to temperature fluctuations.

[0013] Furthermore, because the first and second flexible temperature-dependent layers are welded together in the uncoated region, for example, when multiple layers are stacked vertically, the flexible temperature-dependent layer at the boundary between the coated and uncoated regions forms a three-dimensional shape including sidewalls extending in a generally vertical direction. This change in flexibility of the sidewalls allows the cushion layer to easily deform laterally. Furthermore, because the cushion layer can freely deform toward the uncoated region, it can deform more significantly, increasing its ability to absorb pressure. As a result, the flexible temperature-dependent material laminate structure of the present invention can significantly change its ability to absorb pressure depending on the temperature.

[0014] (3) Furthermore, a plurality of layers including a main body layer, a cushion layer using a resin foam, and a flexible temperature-dependent layer using a flexible temperature-dependent material that is flexible and whose flexibility depends on temperature may be stacked, and the layers may be stacked to form, on the surface of the main body layer, a covered region in which the first flexible temperature-dependent layer covers the cushion layer from the outside, and an uncovered region adjacent to the covered region in which the first flexible temperature-dependent layer does not cover the cushion layer from the outside. (4) Furthermore, the second flexible temperature-dependent layer may be interposed between the main body layer and the cushion layer. (5) The first flexible temperature-dependent layer and the second flexible temperature-dependent layer may be welded to each other in part or all of the uncovered region.

[0015] For example, when multiple layers are stacked vertically and the main layer is placed as the bottom layer, the cushion layer and the flexible temperature-dependent layer are supported by the main layer, so the cushion layer can absorb forces concentrated in the vertical direction. Furthermore, as the temperature rises, the flexibility of the flexible temperature-dependent layer increases, allowing the cushion layer to deform significantly in the lateral direction, thereby increasing the degree of force absorption. Thus, the flexible temperature-dependent material laminate structure of the present invention can more significantly change the degree of pressure absorption depending on the temperature.

[0016] Furthermore, since the cushion layer and the flexible temperature-dependent layer are laminated together with the main body layer, the cushion layer and the flexible temperature-dependent layer do not move away from their fixed positions on the main body, and can stably exert a pressure absorption effect at a fixed position. Thus, the flexible temperature-dependent material laminate structure of the present invention can stably change the degree of pressure absorption in response to high and low temperatures.

[0017] (6) The flexible temperature-dependent material may be a synthetic resin having a glass transition temperature of 23°C or higher and lower than 36°C.

[0018] The flexible temperature-dependent material is a synthetic resin that undergoes a phase transition from a glassy state to a rubbery state when its temperature is higher than its glass transition temperature, and vice versa. That is, an increase or decrease in temperature causes a transition from the glassy state to the more flexible rubbery state, and vice versa. Thus, flexibility is temperature dependent.

[0019] The room temperature where people live is approximately 23°C, and the human body temperature is approximately 36°C. Therefore, when the glass transition temperature of the flexible temperature-dependent material is 23°C or higher and lower than 36°C, the flexibility of the flexible temperature-dependent layer increases from the beginning as the temperature rises from room temperature due to body heat, and the flexible temperature-dependent material laminate structure of the present invention can increase the degree of pressure absorption. Furthermore, the flexibility of the flexible temperature-dependent layer does not increase at temperatures lower than the human living space, and the flexible temperature-dependent material laminate structure of the present invention can maintain its flexibility before the increase.

[0020] Furthermore, since the glass transition temperature of the flexible temperature-dependent material is less than 36°C, for example, the flexibility of the flexible temperature-dependent layer, which has been at a temperature higher than body temperature, will not decrease before the temperature drops to human body temperature, and until then, the flexible temperature-dependent material laminate structure of the present invention can maintain its increased flexibility.

[0021] Thus, the flexibility of the flexible temperature-dependent layer changes at temperatures between the room temperature where a person lives and their body temperature. The flexibility of the flexible temperature-dependent material laminate structure of the present invention increases when the body temperature of a person is transferred to it, and returns to its original flexibility when the person removes it and the temperature returns to room temperature. In this way, the degree of pressure absorption can be changed depending on whether or not the body temperature of a person is applied.

[0022] (7) The layers may be laminated to form a plurality of covering regions, including a circular or rectangular covering region. (8) The layers may be laminated to form a plurality of uncovered regions, including circular or rectangular uncovered regions.

[0023] That is, since the flexible temperature-dependent material laminate structure of the present invention has a plurality of circular or rectangular coated regions or uncoated regions, it is possible to change the degree of pressure absorption caused by temperature fluctuations in the arrangement range in which these coated or uncoated regions are arranged. In this case, by changing the degree of pressure absorption in each coated region, it is possible to set the degree of pressure absorption in the arrangement range to be uniform or uneven.

[0024] Furthermore, when circular or angular covered areas or uncovered areas are continuous, the degree of pressure absorption can be increased when a body part is placed on or comes into contact with the arrangement area. This makes it possible to change the degree of sinking and the speed at which the body part sinks when it comes into contact with the arrangement area. Furthermore, by changing the thickness of the flexible temperature-dependent material, it is possible to change the feel and grip of the body part against the unevenness formed by the circular or angular shapes.

[0025] (9) The layers may be laminated to form the covering region extending in a substantially straight line.

[0026] That is, since the flexible temperature-dependent material laminate structure of the present invention has a covering region extending in a substantially linear manner, the degree of absorption of pressure due to high or low temperatures can be changed in the substantially linear convex portions of the covering region. Furthermore, when a part of the body is brought into contact with one or more covering regions in the direction of the surface of the flexible temperature-dependent material laminate structure, the degree of resistance received from each convex portion can be changed. Furthermore, by changing the thickness of the flexible temperature-dependent material, the degree of absorption, resistance, etc. can be adjusted.

[0027] (10) The present invention provides a flexible temperature-dependent structure having a support body, characterized in that it has the aforementioned flexible temperature-dependent material laminate structure, part or all of the surface layer of the support body forms the main body layer, and the upper surface is configured to support the human body.

[0028] That is, in the flexible temperature-dependent structure of the present invention, the surface of the support body forms the main body layer of the flexible temperature-dependent structure, and the cushion layer and flexible temperature-dependent layer are laminated on the surface side of the main body layer. For example, when the flexible temperature-dependent structure is a bed, a mattress, a sofa, or the like, and part or all of the user's body is supported by the flexible temperature-dependent structure, the degree of absorption of pressure due to body weight increases due to body temperature. This makes it possible to obtain a flexible temperature-dependent structure that is soft when standing on it and relatively hard when not standing on it. Furthermore, by changing the thickness of the flexible temperature-dependent material, the softness and hardness during change can be adjusted.

[0029] (11) Also, a flexible temperature-dependent structure having a handle body may have the aforementioned flexible temperature-dependent material laminate structure, and part or all of the surface layer of the handle body may form the main body layer, and the periphery may be configured to be gripped by a user.

[0030] That is, in the flexible temperature-dependent structure of the present invention, the surface layer of the handle body forms the main body layer of the flexible temperature-dependent structure, and the cushion layer and flexible temperature-dependent layer can surround it. For example, if the flexible temperature-dependent structure is a handrail, steering wheel, walking stick, doorknob, or the like, and the user grips the flexible temperature-dependent structure, the degree of absorption of pressure due to gripping changes depending on body temperature. This makes it possible to obtain a flexible temperature-dependent structure that is soft when gripped and relatively hard when not gripped. Furthermore, by changing the thickness of the flexible temperature-dependent material, the softness and hardness during the change can be adjusted.

[0031] For example, when the flexible temperature-dependent structure is a grip for a sporting good such as a tennis racket, badminton racket, or golf club, and the user grips the flexible temperature-dependent structure with their fingers while playing a sport, the degree of absorption of pressure applied by gripping the structure changes depending on body temperature. Furthermore, when the flexible temperature-dependent structure has a covering region that extends in a substantially straight line, the feel and grip of the fingers against the covering region during play changes. Furthermore, the degree of absorption, feel, grip, etc. can be adjusted by changing the thickness of the flexible temperature-dependent material. [Effects of the Invention]

[0032] As described above, the present invention provides a flexible temperature-dependent material laminate structure capable of changing its pressure absorption depending on the temperature, and a flexible temperature-dependent structure having this flexible temperature-dependent material laminate structure. In particular, the present invention provides a flexible temperature-dependent material laminate structure and a flexible temperature-dependent structure capable of increasing or decreasing its pressure absorption depending on the temperature rise caused by body temperature when part or all of a human body comes into contact with the structure and the temperature drop when that part is removed. [Brief explanation of the drawings]

[0033] [Figure 1] 1 illustrates a cross-sectional front view of a flexible temperature dependent material laminate structure according to a first embodiment of the present invention. [Figure 2]2 is a schematic diagram showing a state in which a pressure body is applying downward pressure to the flexible temperature-dependent material laminate structure of FIG. 1 placed on an underlayment. [Figure 3] (a) A schematic diagram of a state in which a pressure body, which is part of the human body, applies downward pressure to the flexible temperature-dependent material laminate structure of Figure 1 placed on a pad. (b) A diagram in which the cushion layer in Figure 1 is added by imaginary lines to the schematic diagram of (a). [Figure 4] 1A is a front cross-sectional view of a flexible temperature-dependent material laminate structure according to a second embodiment of the present invention, and FIG. 1B is a schematic diagram showing a state in which a pressing body, which is part of a human body, applies downward pressure to the flexible temperature-dependent material laminate structure of FIG. [Figure 5] 1A is a front cross-sectional view of a flexible temperature-dependent material laminate structure according to a third embodiment of the present invention, and FIG. 1B is a schematic diagram of a state in which a pressing body, which is part of a human body, is applying downward pressure to the flexible temperature-dependent material laminate structure according to the third embodiment of the present invention. [Figure 6] 1A is a front cross-sectional view of a flexible temperature-dependent material laminate structure according to a third embodiment of the present invention, in which the second flexible temperature-dependent layer and the main body layer are in close contact with each other. FIG. 1B is a partial front cross-sectional view of a flexible temperature-dependent structure having the flexible temperature-dependent material laminate structure of FIG. [Figure 7] 10A shows a plan view of a flexible temperature-dependent material laminate structure according to a fourth embodiment of the present invention, (b) shows a cross-sectional view of the flexible temperature-dependent material laminate structure of (a) taken along line AA, and (b) shows a cross-sectional view of the same structure taken along line BB. [Figure 8] 10A shows a plan view of a flexible temperature-dependent material laminate structure according to a fourth embodiment of the present invention, (b) shows a cross-sectional view of the flexible temperature-dependent material laminate structure of (a) taken along line CC, and (b) shows a cross-sectional view of the same structure taken along line DD. [Figure 9] (a) A partial front cross-sectional view of the flexible temperature-dependent material laminate structure of Figure 7. (b) A schematic diagram of a state in which a pressure body, which is part of the human body, is applying downward pressure to the flexible temperature-dependent material laminate structure of (a) placed on an underlay. [Figure 10]The schematic diagram of FIG. 9(b) is a diagram in which the flexible temperature-dependent material laminate structure in the state of FIG. 9(a) is added by imaginary lines. [Figure 11] 7(a) is a partial front cross-sectional view enlarging a part of the cross-sectional view of FIG. 7(b), and FIG. 7(b) is a schematic diagram showing a state in which lateral tensile forces are applied to the flexible temperature-dependent material laminate structure of FIG. [Figure 12] 1A is a partial front cross-sectional view of a flexible temperature-dependent structure according to a fourth embodiment of the present invention, and FIG. 1B is a cross-sectional view of a flexible temperature-dependent structure according to the fourth embodiment, which is different from FIG. [Figure 13] 10A shows a partial plan view of a flexible temperature-dependent material laminate structure according to a fifth embodiment of the present invention, and FIG. 10B shows a cross-sectional view of the flexible temperature-dependent material laminate structure of FIG. [Figure 14] 10A shows a partial view of a flexible temperature-dependent structure according to a fifth embodiment of the present invention, and FIG. 10B shows a partial cross-sectional view of the flexible temperature-dependent structure of FIG. [Figure 15] 10A shows a partial plan view of a flexible temperature-dependent material laminate structure according to a fifth embodiment of the present invention, which is a strip-shaped body; FIG. 10B shows a cross-sectional view of the flexible temperature-dependent material laminate structure of FIG. 10A along line FF; and FIG. 10C shows a partial cross-sectional view of a flexible temperature-dependent structure having the flexible temperature-dependent material laminate structure of FIG. [Figure 16] (a) A plan view of a flexible temperature-dependent material laminate structure according to a sixth embodiment of the present invention. At the same time, a plan view of a flexible temperature-dependent structure according to the sixth embodiment of the present invention. (b) A plan view of a flexible temperature-dependent material laminate structure according to the sixth embodiment, different from (a), and a plan view of a flexible temperature-dependent structure having this flexible temperature-dependent material laminate structure. DETAILED DESCRIPTION OF THE INVENTION

[0034] [First embodiment] A flexible temperature-dependent material laminate structure according to a first embodiment of the present invention is illustrated using Figures 1 to 3. In the front cross-sectional view of Figure 1, 11 denotes the flexible temperature-dependent material laminate structure. The arrow U indicates the upward direction of the flexible temperature-dependent structure, and the arrow D indicates the downward direction. The arrow L indicates the leftward direction of the flexible temperature-dependent structure, and the arrow R indicates the rightward direction. Furthermore, the arrow F indicates the forward direction of the flexible temperature-dependent structure, and the arrow B indicates the backward direction.

[0035] The flexible temperature-dependent material laminate structure 11 has a flexible temperature-dependent layer 12 and a cushioning layer 13, and is a structure in which these multiple layers are stacked. The flexible temperature-dependent layer 12 shown in the figure is referred to as the first flexible temperature-dependent layer 12a. The first flexible temperature-dependent layer 12a is arranged adjacent to and above the cushioning layer 13. The figure schematically shows an end surface of the flexible temperature-dependent material laminate structure 11 placed on an underlay S1, cut in the left-right direction. The underlay S1 is the surface of a floor, furniture, equipment, sports equipment, clothing, etc., and does not constitute the flexible temperature-dependent material laminate structure 11. The space between the first flexible temperature-dependent layer 12a and the underlay S, which is not occupied by the cushioning layer 13, may be a space E or may be filled with soft padding. Furthermore, since the first flexible temperature-dependent layer 12a covers the entire side surface of the cushion layer 13, there is no need for a space between the first flexible temperature-dependent layer 12a and the underlay S1.

[0036] The first flexible temperature-dependent layer 12a and the cushion layer 13 are laminated to form a covered region 14 and an uncovered region 15 adjacent to the covered region 14. The flexible temperature-dependent material laminate structure 11 in the covered region 14 is formed by overlapping the first flexible temperature-dependent layer 12a and the cushion layer 13. The flexible temperature-dependent material laminate structure 11 in the uncovered region 15 is formed by the first flexible temperature-dependent layer 12a not overlapping with the cushion layer 13. Therefore, the cushion layer 13 is not laminated in the uncovered region 15. The covered region 14 and the uncovered region 15 may be distributed in multiple locations in one flexible temperature-dependent material laminate structure 11.

[0037] The flexible temperature-dependent layer 12 is made of a flexible temperature-dependent material h, which is flexible and whose flexibility is temperature-dependent. This flexible temperature-dependent material h is preferably a synthetic resin with a glass transition temperature of 23°C and less than 36°C. The glass transition temperature refers to the temperature at which a material changes from a glassy state to a rubbery state when the temperature is higher than that temperature. It also refers to the temperature at which a material returns from a rubbery state to a glassy state when the temperature is lower than that temperature. Therefore, the flexibility of the flexible temperature-dependent material h increases significantly when the temperature exceeds the glass transition temperature, and decreases significantly when the temperature is lower than that temperature.

[0038] The upper surface of the first flexible temperature-dependent layer 12 may be covered with a protective cover. The protective cover is made of, for example, a knitted or woven fabric using a blended yarn of polyurethane and polyester. The protective cover is also stretchable.

[0039] A cushioning material such as a resin foam is used as the cushion layer 13. For example, a foam having flexibility and resilience, such as urethane foam or polyethylene foam including EVA foam, can be used. The cushion layer 13 is formed in a circular shape with a center line C in a plan view, for example, as shown in FIG. 1. It may also be a rectangular or irregular shape. It may also be an elongated shape with a longitudinal direction from front to back, for example.

[0040] With the above configuration, the flexibility of the first flexible temperature-dependent layer 12a of the flexible temperature-dependent material laminate structure 11 increases when the temperature rises. Therefore, when the cushion layer 13 overlapping the first flexible temperature-dependent layer 12a is subjected to pressure, the cushion layer 13 can undergo large elastic deformation together with the first flexible temperature-dependent layer 12a. The schematic diagram of FIG. 2 shows a state in which a pressure member S2 is applying downward pressure to the flexible temperature-dependent material laminate structure 11 placed on a base S1. The flexible temperature-dependent material laminate structure 11(e) shown in FIG. 2 with solid lines indicates a state in which pressure is being applied by the pressure member S2. The first flexible temperature-dependent layer 12a(e) ​​and the cushion layer 13(e) also indicate a state in which pressure is being applied, also shown with solid lines. Meanwhile, the cushion layer 13 shown in FIG. 2 with phantom lines is the same as the cushion layer 13 shown in FIG. 1, but without pressure being applied by the pressure member S2.

[0041] At this time, because the flexible temperature-dependent material (h) has flexibility, the first flexible temperature-dependent layer (12a) can follow the cushion layer (13) expanding in the left-right and front-rear directions due to the pressure applied by the pressure applying member (S2). As a result, both the first flexible temperature-dependent layer (12a) and the cushion layer (13) can expand in the left-right and front-rear directions. Furthermore, because the flexibility of the flexible temperature-dependent material (h) depends on temperature, the degree of expansion of the first flexible temperature-dependent layer (12a) and the cushion layer (13) changes depending on the temperature, and the degree of absorption of the pressure applied by the pressure applying member (S2) can be changed.

[0042] Next, if the glass transition temperature of the flexible temperature-dependent material h is equal to or higher than 23°C and lower than 36°C, the flexibility of the first flexible temperature-dependent layer 12a changes at temperatures between the room temperature where a person lives and the body temperature of the person. When the pressure body S2 in FIG. 2 is part of the human body, the flexibility of the flexible temperature-dependent material laminate structure 11 increases as the body temperature of the pressure body S2 is transferred to it. Furthermore, the flexibility decreases as the temperature decreases. Flexibility increases and decreases reversibly. In this way, the degree of pressure absorption can be changed depending on whether or not the body temperature of the human body is applied.

[0043] Next, the cushion layer 13 deforms in a direction other than the direction of the applied pressure, allowing it to freely deform in the direction of the uncovered region 15. Therefore, the cushion layer 13 can deform significantly and has a high degree of pressure absorption. For example, when body heat is transmitted from a pressure member S2, which is part of the human body, to the flexible temperature-dependent material laminate structure 11 in FIG. 2 and downward pressure is applied by the pressure member S2, the cushion layer 13 attempts to deform in the left-right, front-back, or front-to-back directions, which are the directions of the uncovered region 15. This is also true when body heat is transmitted from the pressure member S2 to the flexible temperature-dependent material laminate structure 11 shown in the example of FIG. 3(a) and downward pressure is applied by the pressure member S2. That is, as shown in FIG. 3(b), the cushion layer 13 attempts to deform in the left-right, front-to-back, or front-to-back directions, which are the directions of the uncovered region 15. The covered region of the cushion layer 13 during deformation is indicated by reference numeral 14(e). In the cases of Figures 3(a) and (b), compared to the case of Figure 2, the pressure area of ​​the pressure body S2, which is part of the human body, is smaller, and the flexible temperature-dependent material laminate structure 11 is recessed in the area where the pressure body S2 comes into contact.

[0044] As described above, since the cushion layer 13 does not overlap the uncoated region 15 of the flexible temperature-dependent material laminate structure 11, the first flexible temperature-dependent layer 12a and cushion layer 13 in the covered region 14 as shown in Figures 2 and 3(b) can deform greatly in the front-to-back and left-to-right directions without interference from adjacent uncoated regions 15. In other words, if cushion layers 15 were sandwiched between the uncoated regions 15, adjacent layers would interfere with each other, preventing the first flexible temperature-dependent layer 12a and cushion layer 13 in the covered region 14 from deforming easily, and the cushion layer 15 would have insufficient escape route, making it difficult to absorb pressure. Thus, in the case of the flexible temperature-dependent material laminate structure 11 of the present invention, the degree of pressure absorption can be changed more significantly depending on the temperature caused by body temperature.

[0045] Furthermore, the degree of pressure absorption can be adjusted by changing the thickness of the flexible temperature-dependent material h. In this way, by changing the properties of the flexible temperature-dependent material laminate structure 11 itself, the rate of change in the degree of pressure absorption relative to temperature fluctuations can be changed. This makes it possible to provide flexible temperature-dependent material laminate structures 11 with various pressure absorption characteristics relative to temperature fluctuations.

[0046] Although the figure shows the flexible temperature-dependent material laminate structure 11 placed on an underlay S1, the flexible temperature-dependent material laminate structure 11 does not need to be placed on an underlay or the like. For example, a user may support the flexible temperature-dependent material laminate structure 11 in the air with their fingers. Then, a pressure body 2, which is another part of the human body, may be pressed against the supported flexible temperature-dependent material laminate structure 11. In these cases, the stacking direction, support direction, and pressure direction of the flexible temperature-dependent material laminate structure 11 do not necessarily have to be vertical, but may be horizontal or diagonal.

[0047] [Second embodiment] A flexible temperature-dependent material laminate structure according to a second embodiment of the present invention is illustrated in FIG. 4. In the front cross-sectional view of FIG. 4(a), reference numeral 21 denotes a flexible temperature-dependent material laminate structure. The flexible temperature-dependent material laminate structure 21 has a flexible temperature-dependent layer 22 and a cushion layer 23, and is a laminated structure of these multiple layers. A first flexible temperature-dependent layer 22a is disposed adjacent to the cushion layer 23 above, and a second flexible temperature-dependent layer 22b is disposed adjacent to the cushion layer 23 below. That is, the second flexible temperature-dependent layer 22b is disposed adjacent to the cushion layer 23 on the opposite side of the first flexible temperature-dependent layer 22a. The figure schematically illustrates an end surface of the flexible temperature-dependent material laminate structure 21 placed on a base S1 when cut in the left-right direction. Note that the top surface of the first flexible temperature-dependent layer 22 may be covered with a protective cover. Additionally, the underside of the second flexible temperature dependent layer 23 may be covered by a protective cover.

[0048] The first flexible temperature-dependent layer 22a, the second flexible temperature-dependent layer 22b, and the cushion layer 23 are laminated to form a covered region 24 and an uncovered region 25 adjacent to the covered region 24. The flexible temperature-dependent material laminate structure 21 in the covered region 24 is configured by overlapping the flexible temperature-dependent layers 22a, 22b and the cushion layer 23. The flexible temperature-dependent material laminate structure 21 in the uncovered region 25 is configured by not overlapping the flexible temperature-dependent layers 22a, 22b with the cushion layer 23. Therefore, the cushion layer 23 is not laminated in the uncovered region 25. The covered region 24 and the uncovered region 25 may be distributed in multiple locations in one flexible temperature-dependent material laminate structure 21.

[0049] In this uncoated region 25, the first flexible temperature-dependent layer 22a and the second flexible temperature-dependent layer 22b are welded to each other. That is, the bottom surface 22c of the first flexible temperature-dependent layer 22a and the top surface 22d of the second flexible temperature-dependent layer 22b are welded to each other. These flexible temperature-dependent layers 22a, 22b are heat-welded to each other by heating from above and below. Welding may also be achieved using means other than heat, such as ultrasound. Note that in a flexible temperature-dependent material laminate structure 21 having multiple uncoated regions 25, there may be uncoated regions 25 in which the flexible temperature-dependent layers 22a, 22b are not welded to each other, or all of the uncoated regions 25 may be welded to each other.

[0050] The other configurations are the same as those in the first embodiment.

[0051] 3(a) and 3(b), Fig. 4(b) shows a state in which body heat is transmitted from the pressurizing member S2 to the flexible temperature-dependent material laminate structure 21 and downward pressure is applied by the pressurizing member S2. As shown in Fig. 4(b), the cushion layer 23 attempts to deform in the left-right and front-rear directions, which correspond to the orientation of the uncovered region 25 when viewed from the covered region 24. At this time, because the cushion layer 25 does not overlap the uncovered region 25 of the flexible temperature-dependent material laminate structure 21, the flexible temperature-dependent layers 22a and 22b and the cushion layer 23 of the covered region 24 can deform greatly in the front-rear and left-right directions without interference from the adjacent uncovered region 25.

[0052] With the above-described configuration, the cushion layer 23 is sandwiched between the first flexible temperature-dependent layer 22a and the second flexible temperature-dependent layer 22b, so that the flexibility of both flexible temperature-dependent layers 22a and 22b changes with an increase in temperature, and both the upper and lower flexible temperature-dependent layers 22a and 22b can absorb pressure uniformly. This allows the flexible temperature-dependent material laminate structure 21 to have the property of deforming more regularly in response to temperature fluctuations.

[0053] Furthermore, by welding the first flexible temperature-dependent layer 22a and the second flexible temperature-dependent layer 22b in the uncoated region 25, as shown in FIGS. 4(a) and 4(b), the flexible temperature-dependent layers 22a and 22b form a three-dimensional shape including side walls 26 extending in a generally vertical direction at the boundary between the coated region 24 and the uncoated region 25. The increased flexibility of the side walls 26 allows the cushion layer 23 to easily deform in the front-to-back and left-to-right directions. Furthermore, since the cushion layer 23 can deform freely toward the uncoated region 25, it can deform more greatly, increasing its degree of pressure absorption. Conversely, the reduced flexibility of the side walls 26 makes it more difficult for the cushion layer 23 to deform in the front-to-back and left-to-right directions. Furthermore, the cushion layer 23 becomes less likely to deform, reducing its degree of pressure absorption. As such, the flexible temperature-dependent material laminate structure 21 can significantly change its degree of pressure absorption depending on the temperature.

[0054] [Third embodiment] A flexible temperature-dependent material laminate structure according to a third embodiment of the present invention is illustrated in FIG. 5. In the front cross-sectional view of FIG. 5(a), reference numeral 31 denotes a flexible temperature-dependent material laminate structure. The flexible temperature-dependent material laminate structure 31 is a laminated structure including a flexible temperature-dependent layer 32, a cushioning layer 33, and a main layer 37. The cushioning layer 33 is disposed above the main layer 37, and a first flexible temperature-dependent layer 32a is disposed adjacent to the cushioning layer 33 above the main layer 37, with a second flexible temperature-dependent layer 32b sandwiched between the cushioning layer 33 and the main layer 37. That is, the second flexible temperature-dependent layer 32b is laminated on the opposite side of the first flexible temperature-dependent layer 32a with respect to the cushioning layer 33. The main layer 37 is formed flat as shown in FIGS. 5(a) and 5(b) and constitutes, for example, the surface layer of a bed, a mattress, a sofa, or a supporter worn on the human body. The main body layer 37 may also be curved and may form the surface layer of, for example, handrails, steering wheels, walking sticks, doorknobs, or grips on sports equipment. FIG. 5(a) shows a schematic cross-sectional view of the flexible temperature-dependent material laminate structure 31 placed on a pad S1. FIG. 5(b) shows a schematic cross-sectional view of the flexible temperature-dependent material laminate structure 31 when not placed on a pad or the like but supported by a user. The upper surface of the first flexible temperature-dependent layer 32a may be covered with a protective cover. The lower surface of the second flexible temperature-dependent layer 32b may also be covered with a protective cover. The protective cover may be formed of, for example, a highly elastic knitted or woven fabric made of synthetic fibers.

[0055] By laminating such a protective cover, the flexible temperature-dependent layers 32a, 32b are less likely to be damaged from the outside. Furthermore, even if dust, dirt, or the like adheres to the flexible temperature-dependent layers 32a, 32b, it can be easily removed by brushing or cleaning the protective cover. Furthermore, by laminating a protective cover that stretches less than the flexible temperature-dependent layers 32a, 32b when pulled in the planar direction, unnecessary stretching and deformation of the flexible temperature-dependent layers 32a, 32b can be suppressed.

[0056] The first flexible temperature-dependent layer 32a, the second flexible temperature-dependent layer 32b, the cushion layer 33, and the main body layer 37 are laminated to form a covered region 34 and an uncovered region 35 adjacent to the covered region 34. The flexible temperature-dependent material laminate structure 31 in the covered region 34 is formed by overlapping the flexible temperature-dependent layers 32a and 32b, the cushion layer 33, and the main body layer 37. The flexible temperature-dependent material laminate structure 31 in the uncovered region 35 is formed by not overlapping the flexible temperature-dependent layers 22a and 22b and the main body layer 37 with the cushion layer 33.

[0057] The first flexible temperature-dependent layer 32a and the second flexible temperature-dependent layer 32b are welded to each other in this uncoated region 35. In a flexible temperature-dependent material laminate structure 31 having a plurality of uncoated regions 35, there may be an uncoated region 35 in which the flexible temperature-dependent layers 32a, 32b are not welded to each other, or all of the uncoated regions 35 may be welded to each other.

[0058] The other configurations are common to the first and second embodiments.

[0059] 5(a) and 5(b) illustrate an example in which the second flexible temperature-dependent layer 32b and the main layer 37 in the uncovered region 35 are vertically spaced apart, with a space E or soft padding or the like between them. However, as shown in FIG. 6(a), the second flexible temperature-dependent layer 32b and the main layer 37 may be in close contact with each other in the vertical direction. Alternatively, they may be fixed together by adhesive, welding, sewing, or other means. Furthermore, as shown in FIG. 6(b), the upper surface of the first flexible temperature-dependent layer 32a and the lower surface of the second flexible temperature-dependent layer 32b may be covered with protective covers 38a and 38b.

[0060] Fig. 6(b) is a partial front cross-sectional view of a flexible temperature-dependent structure having a flexible temperature-dependent material laminate structure 31. Fig. 6(b) illustrates an example in which the surface layer 002a of the support body 002 or handle body 002 of a flexible temperature-dependent structure such as a bed, a mat, a sofa, a support worn on the human body, a handrail, a steering wheel, a walking stick, a doorknob, or a grip for sporting goods is formed by the main body layer 37 of the flexible temperature-dependent material laminate structure 31.

[0061] With the above-described configuration, the cushion layer 33 and the flexible temperature-dependent layers 32a and 32b are supported by the main body layer 37, allowing the cushion layer 33 to absorb forces concentrated in the vertical direction. Furthermore, as the temperature rises, the flexibility of the flexible temperature-dependent layers 32a and 32b increases, allowing the cushion layer 33 to deform significantly in the horizontal direction, thereby absorbing a large amount of force. Thus, the flexible temperature-dependent material laminate structure 31 can more significantly change the degree of pressure absorption depending on the temperature.

[0062] Furthermore, because the cushion layer 33 and the flexible temperature-dependent layers 32a and 32b are layered together with the main layer 37, the cushion layer 33 and the flexible temperature-dependent layers 32a and 32b do not move away from their fixed positions on the main body, and can stably absorb pressure at fixed positions. The second flexible temperature-dependent layer 32b and the main layer 37 can be fixed together by means of bonding, welding, sewing, or the like. Alternatively, they may be temporarily attached by means of adhesive, buttons, snap fasteners, or the like, or may be tightly pressed or tightly wrapped. The same applies when the underside of the second flexible temperature-dependent layer 32b is covered by the lower protective cover 38b. In this way, the flexible temperature-dependent material laminate structure 31 can stably change the degree of pressure absorption in response to high and low temperatures.

[0063] [Fourth embodiment] A flexible temperature-dependent material laminate structure and a flexible temperature-dependent structure according to a fourth embodiment of the present invention are illustrated using FIGS. 7 to 12. In the figures, 41 or 51 denotes a flexible temperature-dependent material laminate structure. The plan view of FIG. 7(a) shows the layers of the flexible temperature-dependent material laminate structure 41, which are laminated to form, for example, 16 covered regions 44 arranged in an array of four rows and four columns, and uncovered regions 45 other than these covered regions 44. Each covered region 44 is formed into a circular shape in plan view. The cross-sectional view of FIG. 7(b) shows a cross-section of the flexible temperature-dependent material laminate structure 41 cut left and right along line AA so as to pass through the four covered regions 44. The cross-sectional view of FIG. 7(c) shows a cross-section of the flexible temperature-dependent material laminate structure 41 cut left and right along line BB so as not to pass through the covered regions 44. Although the figure shows an example in which 16 coated areas 44 are formed, the flexible temperature-dependent material laminated structure 41 may also form coated areas 44 arranged in a combination of a number of rows and columns other than four.

[0064] 7(b), the flexible temperature-dependent material laminate structure 41 in the covered region 44 has a flexible temperature-dependent layer 42, a cushion layer 43, and a protective cover 48, and is a structure in which these multiple layers are stacked. That is, a first flexible temperature-dependent layer 42a is disposed adjacent to and above the cushion layer 43, and a first protective cover 48a is disposed adjacent to and above the first flexible temperature-dependent layer 42a. A second flexible temperature-dependent layer 42b is disposed adjacent to and below the cushion layer 43, and a second protective cover 48b is disposed adjacent to and below the second flexible temperature-dependent layer 42b. On the other hand, the flexible temperature-dependent material laminate structure 41 in the uncovered region 45 has, from top to bottom, a first protective cover 48a, a first flexible temperature-dependent layer 42a, a second flexible temperature-dependent layer 42b, and a second protective cover 48b disposed adjacent to and above each other. That is, the cushion layer 43 is not laminated in the uncovered region 45. The protective covers 48a, 48b are made of a highly elastic fabric, for example, a highly elastic woven or knitted fabric using a blended yarn of polyester fiber and polyurethane fiber.

[0065] In Figure 7(c), similar to the uncoated area 45 in Figure 7(b), from top to bottom, a first protective cover 48a, a first flexible temperature-dependent layer 42a, a second flexible temperature-dependent layer 42b and a second protective cover 48b are arranged adjacent to each other.

[0066] In these uncoated areas 45, the first flexible temperature dependent layer 42a and the second flexible temperature dependent layer 22b are welded to each other.

[0067] 8(a) to 8(c), the flexible temperature-dependent material laminate structure 51 is laminated so as to form 16 uncoated regions 55 arranged in an array of four rows and four columns, opposite to the example of FIGS. 7(a) to 7(b), and coated regions 54, which are regions other than these uncoated regions 55. Each uncoated region 55 is formed in a circular shape in a plan view. Note that, although an example in which 16 uncoated regions 55 are formed is shown, the flexible temperature-dependent material laminate structure 51 may also form uncoated regions 55 arranged in a combination of a number of rows and columns other than four.

[0068] As shown in the cross-sectional view along line CC in Figure 8(b), the flexible temperature-dependent material laminate structure 51 in the covered region 54 has, from top to bottom, a first protective cover 58a, a first flexible temperature-dependent layer 52a, a cushion layer 53, a second flexible temperature-dependent layer 52b, and a second protective cover 58b arranged adjacent to each other. Also, the flexible temperature-dependent material laminate structure 51 in the uncovered region 55 has, from top to bottom, a first protective cover 58a, a first flexible temperature-dependent layer 52a, a second flexible temperature-dependent layer 52b, and a second protective cover 58b arranged adjacent to each other. In the cross-sectional view along line DD in Figure 8(c), the protective covers 57a, 57b, the flexible temperature-dependent layers 52a, 52b, and the cushion layer 53 are arranged adjacent to each other, similar to the covered region 54 in Figure 8(b). In the uncoated area 55, the first flexible temperature dependent layer 52a and the second flexible temperature dependent layer 52b are welded to each other.

[0069] 9(a) and 9(b) are enlarged partial cross-sectional views of a flexible temperature-dependent material laminate structure 41 having a circular covering area 44. FIG. 9(a) shows the flexible temperature-dependent material laminate structure 41 placed on a base S1, immediately after a pressure body S2, which is part of the human body, has come into contact with the flexible temperature-dependent material laminate structure 41 from above. FIG. 9(b) also shows the state in which downward pressure is being applied by the pressure body S2. The temperature of the pressure body S2 is body temperature.

[0070] By welding the first flexible temperature-dependent layer 42a and the second flexible temperature-dependent layer 42b in the uncoated region 45 of the flexible temperature-dependent material laminate structure 41, the flexible temperature-dependent layers 42a and 42b form a three-dimensional shape including side walls 46 extending in a generally vertical direction at the boundary between the coated region 44 and the uncoated region 45, as shown in Figures 9(a) and 9(b). The increased flexibility of the side walls 46 allows the cushion layer 43 to easily deform in the front-to-back and left-to-right directions, increasing the degree of pressure absorption. The thin solid arrows in Figure 9(b) indicate the directions in which the cushion layer 43, the side walls 46, and the protective covers 48a and 48b deform. Conversely, the reduced flexibility of the side walls 46 makes it more difficult for the cushion layer 43 to deform in the front-to-back and left-to-right directions. The cushion layer 43 is therefore less able to deform, resulting in a reduced degree of pressure absorption. As described above, the flexible temperature-dependent material laminated structure 41 can change the degree of pressure absorption to a greater extent depending on whether the temperature is high or low.

[0071] At this time, since the cushion layer 45 does not overlap the uncovered region 45 of the flexible temperature-dependent material laminate structure 41, as shown in Fig. 10, when the flexible temperature-dependent layers 42a, 42b and the cushion layer 43 of the covered region 44(e) are deformed by the pressure body S2, they can deform greatly in the front-to-back and left-to-right directions without being interfered with by the adjacent uncovered region 45. In this way, the flexible temperature-dependent material laminate structure 41 can more greatly change the degree of pressure absorption depending on the temperature caused by body temperature.

[0072] The above-mentioned action also applies to the flexible temperature-dependent material laminate structure 51 shown in Fig. 8. The same applies when the coated area 44 in Fig. 7 or the uncoated area 55 in Fig. 8 is rectangular rather than circular, or when circular and rectangular shapes are mixed.

[0073] Although not shown, the flexible temperature-dependent material laminated structures 41 and 51 may have main body layers 47 and 57 as shown in FIGS. 5(a) and 5(b).

[0074] The other configurations are common to the first, second or third embodiment.

[0075] With the above configuration, the flexible temperature-dependent material laminate structure 41, 51 has a plurality of circular or rectangular covered regions 44 or uncovered regions 55, and therefore the degree of pressure absorption due to temperature fluctuations can be changed in the arrangement range where these covered regions 44, 54 or uncovered regions 45, 55 are arranged. In this case, by changing the degree of pressure absorption in each covered region 44, 54, the degree of pressure absorption in the arrangement range can be set to be uniform or biased.

[0076] Furthermore, when circular or angular covered areas 44 or uncovered areas 55 are continuous, the degree of pressure absorption can be increased when a body part is placed on or comes into contact with the arrangement area. This makes it possible to change the degree and speed of sinking when a body part comes into contact with the arrangement area. Furthermore, by changing the thickness of the flexible temperature-dependent material 41, 51, it is possible to change the feel and grip of the body part against the circular or angular unevenness.

[0077] Furthermore, when applying tensile force in the front-rear and left-right directions to the flexible temperature-dependent material laminate structure 41, 51, the degree of expansion in the front-rear and left-right directions can be changed depending on the temperature. For example, when applying leftward and rightward tensile force to the flexible temperature-dependent material laminate structure 41 in FIG. 11(a) and raising the temperature of the flexible temperature-dependent material laminate structure 41 using a pad S1 and a pressure body S2, which are parts of the human body, respectively, the first flexible temperature-dependent layer 42a and the second flexible temperature-dependent layer 42b of the flexible temperature-dependent material laminate structure 41 have higher flexibility than when the temperature is not raised. As a result, the flexible temperature-dependent material laminate structure 41 can stretch and deform leftward and rightward even when a small tensile force is applied. FIG. 11(b) shows the flexible temperature-dependent material laminate structure 41 after such deformation. Furthermore, since the degree of absorption of vertical pressure by the flexible temperature-dependent material laminated structure 41, 51 can be changed depending on the temperature, the flexible temperature-dependent material laminated structure 41, 51 can be used by changing both the degree of absorption of vertical pressure and the degree of expansion in the front-to-back, left-to-right directions depending on the temperature.

[0078] 12(a) and 12(b) show flexible temperature-dependent structures 101 and 201, each having a flexible temperature-dependent material laminate structure 41. The flexible temperature-dependent structure 101 shown in FIG. 12(a) is, for example, a bed, a mattress, or a sofa, and includes a support body 102, the upper surface of which is configured to support the human body. The surface layer 102a of the support body 102 forms the body layer 47 of the flexible temperature-dependent material laminate structure 41. The flexible temperature-dependent material laminate structure 41 has a cushioning layer 43, flexible temperature-dependent layers 42a and 42b, and protective covers 48a and 48b laminated above the body layer 47. The cushioning layer 43 is not laminated in the uncovered region 45. Note that Figure 12(a) shows a form in which the entire surface layer 102a of the support body 102 forms the main body layer 47 of the flexible temperature-dependent material laminate structure 41, but there may be parts that are not covered by the flexible temperature-dependent material laminate structure 41, and only a part of the surface layer 102a may form the main body layer 47.

[0079] With this configuration, the flexible temperature-dependent structure 101 has the surface 102a of the support body 102 forming the main body layer 47 of the flexible temperature-dependent structure 41, with the cushion layer 43 and flexible temperature-dependent layer 42 laminated on the surface side. When part or all of the body of the user of this flexible temperature-dependent structure 101 is supported from below by the flexible temperature-dependent structure 41, the degree to which pressure due to body weight is absorbed increases due to body temperature. This makes it possible to obtain a flexible temperature-dependent structure 101 that is soft when standing on it and relatively hard when not standing on it. Furthermore, by changing the thickness of the flexible temperature-dependent material h, the softness and hardness during change can be adjusted.

[0080] The flexible temperature-dependent structure 201 shown in the cross-sectional view of FIG. 12(b) is, for example, a handrail, a steering wheel, a walking stick, or a doorknob, and includes a handle body 202, which is configured to be gripped by a user. FIG. 12(b) shows an example of a flexible temperature-dependent structure 201 having a substantially circular cross-section, with the handle body 202 positioned closer to the central axis Ca of the cross-section. The surface layer 202a of the handle body 202 forms the main body layer 47 of the flexible temperature-dependent material laminate structure 41. The flexible temperature-dependent material laminate structure 41 is further configured such that, radially outward from the main body layer 47, a second protective cover 48b, a second flexible temperature-dependent layer 42b, a cushioning layer 43, a first flexible temperature-dependent layer 42a, and a first protective cover 48a are laminated in this order. The cushioning layer 43 is not laminated in the uncovered region 45. Note that Figure 12(b) shows a form in which the entire surface layer 202a of the handle body 202 forms the main body layer 47 of the flexible temperature-dependent material laminate structure 41, but there may be parts that are not covered by the flexible temperature-dependent material laminate structure 41, and only a part of the surface layer 202a may form the main body layer 47.

[0081] With this configuration, the surface layer 202a of the handle body 202 of the flexible temperature-dependent structure 201 forms the main body layer 47 of the flexible temperature-dependent structure 41, and the cushion layer 43 and flexible temperature-dependent layer 42 surround it. When the user grips the flexible temperature-dependent structure 201, the degree to which the structure absorbs pressure due to gripping changes depending on the user's body temperature. This makes it possible to obtain a flexible temperature-dependent structure 201 that is soft when gripped and relatively hard when not gripped. Furthermore, by changing the thickness of the flexible temperature-dependent material h, the softness and hardness during the change can be adjusted.

[0082] Furthermore, because the flexibility of the flexible temperature-dependent layer 42 changes before and after a temperature rise, for example, when the cushion layer 43 before the temperature rise is covered and pressed down by the flexible temperature-dependent layer 42, the flexible temperature-dependent structure 201 can be made relatively small or thin at low temperatures and relatively large or thick at high temperatures. This allows the flexible temperature-dependent structure 201 to be stored in a relatively small space when the user is not touching it, and also makes it possible to manufacture a handle that expands when touched, so that even a user with weak strength can easily grip it.

[0083] [Fifth embodiment] A flexible temperature-dependent material laminate structure and a flexible temperature-dependent structure according to a fifth embodiment of the present invention are illustrated using FIGS. 13 to 15. The plan view of FIG. 13(a) shows a flexible temperature-dependent material laminate structure 61, in which each layer is laminated to form a covered region 64 extending substantially linearly from front to back. As shown in the cross-sectional view of line E-E in FIG. 13(b), the flexible temperature-dependent material laminate structure 61 has a first protective cover 68a, a first flexible temperature-dependent layer 62a, a cushion layer 63, a second flexible temperature-dependent layer 62b, a second protective cover 68b, and a main body layer 67 laminated from top to bottom in the covered region 64. Furthermore, in the non-covered region 65, each layer other than the cushion layer 63 is laminated. Of these layers, the main body layer 67 is formed by a portion of the surface layer of the flexible temperature-dependent structure 301 described below. The flexible temperature-dependent material laminated structure 61 may have a configuration between the two imaginary lines shown in FIGS. 13(a) and 13(b) repeated in the left-right direction.

[0084] 14(a) shows a flexible temperature-dependent structure 301 having a flexible temperature-dependent material laminate structure 61. The flexible temperature-dependent structure 301 is a grip for sports equipment such as a tennis racket, badminton racket, or golf club. The flexible temperature-dependent structure 301 serving as a grip has a handle body 302 near the central axis Cb. A user grips the periphery of the flexible temperature-dependent structure 301 serving as a grip to play sports using the sports equipment.

[0085] As shown in Figure 14(a), in the flexible temperature-dependent material laminate structure 61 of the flexible temperature-dependent structure 301, coated regions 64 and uncoated regions 65 are arranged alternately in the vertical direction of the figure. Figure 14(b) shows a longitudinal cross section of this flexible temperature-dependent structure 301. As shown in Figure 14(b), a part of the surface layer of the handle body 302 forms the main body layer 67 of the flexible temperature-dependent material laminate structure 61.

[0086] In the flexible temperature-dependent structure 301, the coating region 64 is arranged in a spiral shape as shown in Fig. 14(a). That is, the coating region 64 is arranged so as to rotate in a spiral shape around the central axis Cb. As a result, the cross section shown in Fig. 13(b) appears repeatedly in the vertical direction of the cross section of Fig. 14(b).

[0087] To form this flexible temperature-dependent structure 301, for example, a strip 69 as shown in the plan view of Fig. 15(a) and the cross-sectional view of line FF of Fig. 15(b) may be produced and wound around the handle body 302 in a spiral shape centered on the central axis Cb. At this time, only the first protective cover 68a, the first flexible temperature-dependent layer 62a, the cushion layer 63, the second flexible temperature-dependent layer 62b, and the second protective cover 68b are layered on the strip 69 from top to bottom.

[0088] When wrapping the strip 69 around the handle body 302, the uncoated areas 65 may overlap the uncoated areas 65 of the adjacent rows in the longitudinal direction of the handle body 302. Figure 15(c) shows a partial cross-sectional view of the uncoated areas 65 partially overlapping each other.

[0089] The other configurations are common to the first to fourth embodiments.

[0090] With the above configuration, the flexible temperature-dependent material laminate structure 61 has a covered region 64 that extends in a substantially linear manner, and therefore the degree of absorption of pressure due to high and low temperatures can be changed in the substantially linear convex portion of the covered region 64. Furthermore, when a finger touches a single covered region 64 or multiple covered regions 64 that are arranged in a spiral and are aligned substantially parallel to each other in the surface direction of the flexible temperature-dependent material laminate structure 61, the degree of resistance received from each convex covered region 64 can be changed. Furthermore, by changing the thickness of the flexible temperature-dependent material h, the degree of absorption, resistance, etc. can be adjusted.

[0091] Furthermore, when a user of sporting goods whose grip is the flexible temperature-dependent structure 301 grips the grip with their fingers while playing a sport, the degree of absorption of pressure caused by gripping changes depending on body temperature. Furthermore, because the flexible temperature-dependent structure 61 has a covering region 64 that extends in a substantially straight line, the feel of the covering region 64 on the fingers and the degree of gripping change during play. Furthermore, by changing the thickness of the flexible temperature-dependent material h, the degree of absorption, feel, and degree of grip can be adjusted. This makes it possible to increase the lineup of sporting goods with different usability and to meet the needs of individual users regarding usability.

[0092] [Sixth embodiment] A flexible temperature-dependent material laminate structure and a flexible temperature-dependent structure according to a sixth embodiment of the present invention are illustrated using FIG. 16. FIGS. 16(a) and 16(b) show flexible temperature-dependent material laminate structures 71 and 81, respectively, which have different shapes. Of these, FIG. 16(a) shows a flexible temperature-dependent structure 401 having a flexible temperature-dependent material laminate structure 71. FIG. 16(a) shows a plan view of the flexible temperature-dependent material laminate structure 71 and the flexible temperature-dependent structure 401. The flexible temperature-dependent structure 401 is a supporter whose bottom surface is worn on a part of the body such as an elbow or a knee. FIG. 16(b) shows a flexible temperature-dependent structure 501 having a flexible temperature-dependent material laminate structure 81. FIG. 16(b) shows a plan view of the flexible temperature-dependent material laminate structure 81 and the flexible temperature-dependent structure 501. The flexible temperature-dependent structure 501 is an insole that is attached at its bottom to the bottom of footwear and on which the sole of the user's foot rests.

[0093] The flexible temperature-dependent material laminate structure 71 shown in FIG. 16(a) is formed in a substantially circular shape in a plan view, and the flexible temperature-dependent structure 401 having this structure is formed in a substantially circular flat plate shape. Concentric covered regions 74 and uncovered regions 75 are alternately arranged in the flexible temperature-dependent material laminate structure 71. That is, annular cushion layers 73 are laminated in each of the three covered regions 74. The bottom surface of the flexible temperature-dependent structure 401 is attached to a part of the body such as an elbow or knee, and body heat is transferred from this part of the body. Furthermore, as a supporter, pressure is applied from above to the flexible temperature-dependent structure 401, and a tensile force is applied in the surface direction when the elbow, knee, etc. are bent and stretched.

[0094] The flexible temperature-dependent material laminate structure 81 shown in FIG. 16(b) and a flexible temperature-dependent structure 501 having the same are formed to resemble the sole of a human foot in plan view. The flexible temperature-dependent material laminate structure 81 has an outer uncovered region 85 arranged near the outer edge, and an outer covered region 84 arranged inside that. An inner uncovered region 85 is arranged inside that, and an inner covered region 84 is arranged inside that. In this way, the multiple covered regions 84 and the multiple uncovered regions 85 are arranged alternately from outside to inside. Cushion layers 83 of the same shape are laminated in each covered region 84. The user places their sole on the flexible temperature-dependent structure 501, and body heat is transferred from the sole of the foot. Furthermore, pressure is applied from above to the flexible temperature-dependent structure 501 as an insole.

[0095] The other configurations are common to the first to fourth embodiments.

[0096] [Example] The inventors have fabricated a prototype 50 of a flexible temperature-dependent structure having a flexible temperature-dependent material laminate structure 41 as shown in Figure 7. They have also fabricated a prototype 60 of a flexible temperature-dependent structure having a flexible temperature-dependent material laminate structure 51 as shown in Figure 8. The cross-sectional structures of these structures conform to the cross-sectional view shown in Figure 12(a).

[0097] The flexible temperature-dependent layers 42, 52 of these prototypes 50, 60 were made of HUMOFIT (registered trademark), a flexible temperature-dependent material h manufactured by Mitsui Chemicals, Inc., a 0.5 mm-thick olefin-based resin sheet. The glass transition temperature of this flexible temperature-dependent material h was approximately 28°C. The cushion layers 43, 53 were made of Sunpelca (registered trademark), a polyethylene foam manufactured by Sanwa Kako Co., Ltd. Furthermore, the protective covers 48a, 48b, 58a, 58b were made of Torinocool (registered trademark), a fabric material made of polyester fiber and polyester fiber blend yarn manufactured by Kawada Knit Co., Ltd.

[0098] The repulsive force received from prototypes 50 and 60 when finger pressure was applied from above to prototypes 50 and 60 was compared with the repulsive force received from prototypes 50 and 60 when finger pressure was also applied from above via a board. This board was made of wood with a thickness of 20 mm, and even if the temperature of its upper surface rose due to the fingers, the increased temperature was not transferred to the lower surface, causing a rise in temperature.

[0099] As a result of this comparison, the repulsive force received when pressure was applied directly (not through a plate) was clearly smaller than the repulsive force received when pressure was applied indirectly (through a plate). In other words, the degree of pressure absorption when pressure was applied directly was greater than the degree of pressure absorption when pressure was applied indirectly. Thus, the flexible temperature-dependent material laminate structures 41, 51 and flexible temperature-sensitive structures including these have a high degree of pressure absorption when the body temperature of the human body is transmitted.

[0100] That is, since the room temperature where people live is approximately 23°C, the glass transition temperature of the flexible temperature-dependent material h used in prototypes 50 and 60 is approximately 28°C, and the human body temperature is approximately 36°C, the temperature rise from room temperature due to body heat increased the flexibility of flexible temperature-dependent layers 42 and 52 from the beginning. In this way, flexible temperature-dependent material laminate structures 41 and 51 were able to increase the degree of pressure absorption.

[0101] Although the embodiments of the present invention have been described above as examples, the present invention is not limited to these embodiments, and various modifications are possible without departing from the spirit of the present invention.

[0102] For example, although examples have been given in which the shape of the coated region in plan view is circular or angular, and the shape of the uncoated region is also circular or angular, these coated regions or uncoated regions may have other shapes. That is, they may be elongated or irregular. Furthermore, the shapes of the coated regions or the uncoated regions in a single flexible temperature-dependent material laminate structure may be inconsistent.

[0103] Furthermore, although examples of configurations in which protective covers are laminated on the flexible temperature-dependent material laminate structures in the fourth and fifth embodiments have been shown, protective covers may not be laminated on some or all of the flexible temperature-dependent layers as long as there is no risk of the flexible temperature-dependent layers being damaged, there is little risk of dust or the like directly adhering to the flexible temperature-dependent layers, and there is no risk of the flexible temperature-dependent layers being unnecessarily stretched. The same applies to the sixth embodiment. [Industrial Applicability]

[0104] The present invention can be used for flexible temperature-dependent structures such as beds, mats, sofas, grips for sports equipment, and supports. [Explanation of symbols]

[0105] 11, 21, 31, 41, 51, 61, 71, 81 Flexible temperature dependent laminate structure 12, 22, 32, 42, 52, 62 flexible temperature dependent layer 13, 23, 33, 43, 53, 63, 73, 83 Cushion layer 14, 24, 34, 44, 54, 64, 74, 84 Coverage Area 15, 25, 35, 45, 55, 65, 75, 85 Uncovered area 26, 46 side wall 37, 47, 67 Main layer 38, 48, 58 cover layers 69 Band 002, Support body, handle body 002a, 102a, 202a surface layer 101, 201, 301, 401, 501 Flexible temperature-dependent structures 102 Support body 202, 302 Handle body S1 Desk Pad S2 pressure body

Claims

1. a cushion layer using a resin foam and a flexible temperature-dependent layer using a flexible temperature-dependent material having flexibility whose flexibility depends on temperature; The layers are stacked to form a covered region where the first flexible temperature-dependent layer overlaps the cushioning layer, and an uncovered region adjacent to the covered region where the first flexible temperature-dependent layer does not overlap the cushioning layer.

1. A flexible temperature dependent material laminate structure comprising:

2. a second flexible temperature-dependent layer is laminated to the cushioning layer on an opposite side of the first flexible temperature-dependent layer in the covered and uncovered regions; The first flexible temperature-dependent layer and the second flexible temperature-dependent layer are welded to each other in part or all of the uncovered region.

2. The flexible temperature dependent material laminate structure of claim 1.

3. a plurality of layers including a main body layer, a cushion layer using a resin foam, and a flexible temperature-dependent layer using a flexible temperature-dependent material having flexibility and whose flexibility depends on temperature, laminated together; The layers are laminated to form, on the surface of the main body layer, a covered region in which the first flexible temperature-dependent layer is configured to cover the cushion layer from the outside, and an uncovered region adjacent to the covered region in which the first flexible temperature-dependent layer is configured not to cover the cushion layer from the outside.

1. A flexible temperature dependent material laminate structure comprising:

4. The second flexible temperature dependent layer is interposed between the body layer and the cushion layer.

4. The flexible temperature dependent material laminate structure of claim 3.

5. The first flexible temperature-dependent layer and the second flexible temperature-dependent layer are welded to each other in part or all of the uncovered region.

5. The flexible temperature dependent material laminate structure of claim 4.

6. The flexible temperature-dependent material is a synthetic resin, the glass transition temperature of which is greater than or equal to 23°C and less than 36°C.

4. The flexible temperature dependent material laminate structure according to claim 1 or 3.

7. The layers are stacked to form a plurality of covering regions, including a circular or rectangular covering region.

6. A flexible temperature dependent material laminate structure according to any one of claims 1 to 5.

8. The layers are laminated to form a plurality of uncovered areas, including circular or rectangular uncovered areas.

6. A flexible temperature dependent material laminate structure according to any one of claims 1 to 5.

9. The layers are stacked to form the covering region extending in a substantially linear manner.

6. A flexible temperature dependent material laminate structure according to any one of claims 1 to 5.

10. A flexible temperature dependent structure comprising a support body, A flexible temperature-dependent material laminate structure according to any one of claims 3 to 5, a part or all of the surface layer of the support body forms the body layer; The upper surface is configured to support the human body.

1. A flexible temperature dependent structure comprising:

11. A flexible temperature dependent structure comprising a handle body, A flexible temperature-dependent material laminate structure according to any one of claims 3 to 5, A part or all of the surface layer of the handle body forms the main body layer, The periphery is configured to be grasped by the user.

1. A flexible temperature dependent structure comprising:

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