Sensor sheet and pad body

Abstract

A sensor sheet according to one embodiment is a sensor sheet that is attached to a pad body and acquires life data of a user of the pad body. The pad body includes a core material made of a flexible material, and a cover cloth that accommodates the core material and is attachable and detachable relative to the core material. The sensor sheet is provided with a sheet-shaped fabric, a filiform sensor embroidered on the sheet-shaped fabric, and a fixing part for fixing the sheet-shaped fabric to the cover cloth, and the fixing part can be assembled and disassembled relative to the cover cloth.

Description

Technical Field

[0001] The present disclosure relates to a sensor sheet and a pad body.

[0002] This application claims priority based on Japanese Application No. 2022-187497 filed on November 24, 2022, and incorporates by reference the entire contents described in the Japanese application. Background Art

[0003] JP-A-2021-185996 discloses a bedding for placing a user's body. The bedding includes a cover cloth and a plurality of filamentous sensors embroidered on the cover cloth. The filamentous sensors acquire time-series data of voltage values. This time-series data is used to acquire data related to the user's breathing, heartbeat, sleep time, etc.

[0004] [Prior Art Documents]

[0005] [Patent Documents]

[0006] [Patent Document 1] JP-A-2021-185996 Summary of the Invention

[0007] [Technical Problem to be Solved by the Invention]

[0008] In the above-mentioned bedding, in addition to suppressing the positional deviation of the filamentous sensors, it is also required to be able to easily wash the cover cloth. The filamentous sensors are sometimes intolerant to water. Therefore, it is desirable to remove the filamentous sensors from the cover cloth when washing the cover cloth. However, in the above-mentioned bedding, since the filamentous sensors are directly embroidered on the cover cloth, it is not easy to remove the filamentous sensors from the cover cloth. The above-mentioned bedding includes a plurality of filamentous sensors in order to acquire a wide range of data (user's vital data). However, if the number of filamentous sensors is large, the number of connectors and the like increases, and the electrical system of the connectors and the like may become complicated. Therefore, it is preferable to acquire a wide range of vital data with a smaller number of filamentous sensors.

[0009] An object of the present disclosure is to provide a sensor sheet and a pad body that can suppress positional deviation, can easily wash the cover cloth, and can further acquire a wide range of vital data with a small number of filamentous sensors.

[0010] [Means for Solving the Technical Problem]

[0011] (1) The sensor sheet of the present disclosure is mounted on a pad body, and the pad body includes a core material made of a soft material and a cover cloth that houses the core material and can be attached to and detached from the core material. The sensor sheet acquires vital data of a user of the pad body. The sensor sheet includes: a sheet-like fabric; a filamentous sensor embroidered on the sheet-like fabric; and a fixing portion that fixes the sheet-like fabric to at least one of the core material and the cover cloth. The fixing portion can be attached to and detached from at least one of the core material and the cover cloth.

[0012] The sensor sheet of the present disclosure includes a fixing portion that fixes the sheet-like fabric to at least one of the core material and the cover cloth. The fixing portion fixes the sheet-like fabric to the core material or the cover cloth, thereby suppressing the positional deviation of the sensor sheet when the body of the user of the pad is placed on the pad. For example, when the filamentous sensor is directly embroidered on the cover cloth, it is not easy to remove the filamentous sensor from the cover cloth, so the cover cloth cannot be washed. In contrast, in this sensor sheet, since the fixing portion can be attached to and detached from at least one of the core material and the cover cloth, the sensor sheet can be easily removed from the cover cloth or the core material from which the cover cloth has been removed. Therefore, the cover cloth can be easily washed. The sensor sheet includes a sheet-like fabric and a filamentous sensor embroidered on the sheet-like fabric. For example, one filamentous sensor can be embroidered and installed so as to expand two-dimensionally in the sheet-like fabric. As a result, a wide range of vital data can be obtained using the filamentous sensor, and the number of filamentous sensors can be reduced. Moreover, the electrical system such as a connector can be simplified.

[0013] (2) In the above (1), it may also be that the core material has an upper surface on which the body of the user is placed, a lower surface facing the side opposite to the upper surface, and a side surface connecting the upper surface and the lower surface. The fixing portion may fix the sheet-like fabric to the cover cloth at a position between the side surface of the core material and the cover cloth. For example, when the fixing portion fixes the sheet-like fabric to the cover cloth at a position between the upper surface on which the body of the user is placed and the cover cloth, when the body of the user is placed on the pad, there is a possibility that the user may feel discomfort because the fixing portion contacts the body of the user. In contrast, when the fixing portion fixes the sheet-like fabric to the cover cloth between the side surface of the core material and the cover cloth, it is possible to avoid causing discomfort to the user.

[0014] (3) In the above (1) or (2), it may also be that the core material and the cover cloth are rectangular in plan view. The cover cloth may also have a plurality of fixed portions for fixing the fixing portion. The plurality of fixed portions may be arranged along the long side direction of the cover cloth. When the body of the user is placed on the pad, for example, the body of the user is placed along the long side direction of the cover cloth. When the plurality of fixed portions are arranged along the long side direction of the cover cloth, the fixing position of the sensor sheet can be changed along the long side direction of the cover cloth. Thus, for example, the position of the sensor sheet in the long side direction of the cover cloth can be adjusted to match the physique of the user. Since the sensor sheet can be arranged at an appropriate position to match the user, more accurate vital data of the user can be obtained.

[0015] (4)In any one of the above (1) to (3), the fixing portion may have a snap fastener. Alternatively, the fixing portion may fix the sheet-like fabric to at least one of the core material and the cover cloth via the snap fastener. In this case, the sensor sheet can be more easily attached to and detached from the cover cloth via the snap fastener. Compared with the case where the fixing portion has a hook-and-loop fastener instead of a snap fastener, the discomfort when the fixing portion comes into contact with the user's body can be reduced.

[0016] (5)In any one of the above (1) to (4), the sheet-like fabric may have an inner fabric with a filamentous sensor embroidered thereon and an outer fabric that houses the inner fabric. The outer fabric may also have waterproof properties. There are cases where the filamentous sensor is intolerant to moisture. In such cases, if the filamentous sensor comes into contact with water, the detection accuracy of the filamentous sensor may decrease. When the inner fabric with the filamentous sensor embroidered thereon is housed in the waterproof outer fabric, contact between moisture and the filamentous sensor can be suppressed. Therefore, a decrease in the detection accuracy of the filamentous sensor can be suppressed.

[0017] (6)In any one of the above (1) to (5), the filamentous sensor may have a curved portion that is curved when viewed from above. In the curved portion where the filamentous sensor is curved, for example, the detection accuracy is higher compared to the straight portion of the filamentous sensor. When the filamentous sensor has a curved portion that is curved when viewed from above, the detection accuracy of the filamentous sensor can be improved.

[0018] (7)In any one of the above (1) to (6), there may also be provided another fixing portion different from the fixing portion. The sheet-like fabric may have a major axis extending in the long side direction and a minor axis extending in the short side direction and intersecting the major axis when viewed from above. The fixing portion may be connected to one end of the sheet-like fabric in the long side direction. The other fixing portion may be connected to the other end of the sheet-like fabric in the long side direction. The core material may have an upper surface on which the user's body is placed, a lower surface facing the side opposite to the upper surface, and a side surface connecting the upper surface and the lower surface. In a state where the sheet-like fabric is disposed on the upper surface of the core material, the fixing portion and the other fixing portion are fixed to each other on the lower surface of the core material, whereby the sheet-like fabric is fixed to the core material. In this case, for example, the sheet-like fabric is fixed to the core material by the fixing portion and the other fixing portion as belt-like members, so that when the user's body of the cushion is placed on the cushion, displacement of the sensor sheet can be suppressed. Since the fixing portion and the other fixing portion can be attached to and detached from the core material, the sensor sheet can be easily detached from the core material with the cover cloth removed.

[0019] (8) In the above (7), it may also be that the fixing part has a first fixing member provided on one end side in the long side direction of the fixing part. It may also be that the other fixing part has a second fixing member provided on the other end side in the long side direction of the other fixing part. It may also be that the fixing part and the other fixing part are fixed to each other via the first fixing member and the second fixing member. In this case, the fixing part and the other fixing part can be more firmly fixed to the core material by the first fixing member and the second fixing member.

[0020] (9) In the above (8), it may also be that the fixing part and the other fixing part respectively have a support body at the adjacent part of the sheet-like fabric. It may also be that the support body of the fixing part is provided at the end part of the fixing part on the side opposite to the first fixing member. It may also be that the support body of the other fixing part is provided at the end part of the other fixing part on the side opposite to the second fixing member. It may also be that, in a state where the sensor sheet is mounted on the core material, the support body of the fixing part and the support body of the other fixing part face the side surface of the core material. In this case, it is possible to suppress the deformation of the fixing part and the other fixing part on the side surface of the core material when the user's body is placed on the sensor sheet. It is possible to suppress the generation of gaps between the side surface of the core material and the fixing part, and between the side surface of the core material and the other fixing part, and it is possible to more reliably suppress the position deviation of the sensor sheet.

[0021] The pad body (10) of the present disclosure includes the sensor sheet according to any one of the above (1) to (9), a core material, and a cover cloth for housing the core material.

[0022] In the pad body of the present disclosure, the sensor sheet has a fixing part that fixes the sheet-like fabric embroidered with the filamentous sensor. Similar to the above-mentioned sensor sheet, it is possible to suppress the position deviation of the sensor sheet when the user's body of the pad body is placed on the pad body. In this pad body, since the fixing part can be attached and detached with respect to at least one of the core material and the cover cloth, the sensor sheet can be easily detached from the cover cloth or the core material from which the cover cloth has been removed. Therefore, it is possible to easily wash the cover cloth. And, in this pad body, similar to the aforementioned sensor sheet, for example, one filamentous sensor can be embroidered and installed in a two-dimensional manner in the sheet-like fabric. It is possible to simplify the electrical system such as a connector, and it is possible to obtain a wide range of life data with a smaller number of filamentous sensors.

[0023] Advantages of the Invention

[0024] According to the present disclosure, it is possible to suppress the position deviation, it is possible to easily wash the cover cloth, and further, it is possible to obtain a wide range of life data with a small number of filamentous sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A It is a schematic perspective view showing a pad body of one embodiment.

[0026] Figure 1B It is a schematic perspective view showing the core material of the cushion body shown in Figure 1A .

[0027] Figure 2 It is a schematic top view showing a sensor sheet of an embodiment.

[0028] Figure 3 It is a schematic view showing an enlarged view of the fixing portion of the sensor sheet and the portion to be fixed of the cover cloth.

[0029] Figure 4 It is Figure 2 a schematic view showing an enlarged view of a part of the sensor sheet shown in

[0030] Figure 5 It is a block diagram showing a sensing system of an embodiment.

[0031] Figure 6 It is a schematic top view showing a sensor sheet of a modified example.

[0032] Figure 7 It is a schematic perspective view showing the core material of the sensor sheet shown in Figure 6 mounted thereon.

[0033] Figure 8A It is a schematic top view showing a sensor sheet of a modified example.

[0034] Figure 8B It is a schematic top view showing a sensor sheet of another modified example. Detailed Embodiment

[0035] Hereinafter, embodiments of the sensor sheet and the cushion body of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. For ease of understanding, the drawings sometimes depict a part in a simplified or exaggerated manner, and the dimensional ratios and the like are not limited to those described in the drawings.

[0036] The cushion body on which the sensor sheet of the present disclosure is mounted will be described. The cushion body is, for example, a bedding. "Bedding" means a bedding that comes into contact with the user's body when the user rests or sleeps. "Bedding" is typically a mattress or a futon, a cushion, a bedspread, a seat cushion, or a pillow. The cushion body may also be, for example, a seat mounted on a vehicle.

[0037] The cushion body is placed on a placement surface for use. The "placement surface" is a surface on which the cushion body is placed, and is, for example, a floor. The cushion body has an upper surface on which the user's body is placed, a lower surface facing the side opposite to the upper surface, and a side surface connecting the upper surface and the lower surface. The "cushion body" is placed on the placement surface in such a manner that the lower surface is in contact with the placement surface. The user's body is placed on the upper surface of the cushion body.

[0038] The cushion body includes a core material made of a soft material and a cover cloth for housing the core material. The cover cloth can be attached to and detached from the core material. "Soft material" refers to a cushioning material that deforms when a user's body is placed on it and bears a load. The soft material is, for example, cloth. "Cover cloth" refers to a bag-shaped fabric that forms the cushion body.

[0039] A "user" is a person who uses the cushion body by bringing their body into contact with it. For example, when the cushion body is a mattress, the user is a person who places their body on the mattress. The user is, for example, a person who places their body on the purchased cushion body, or a person who places their body on the cushion body for the purpose of purchase.

[0040] Figure 1A It is a schematic perspective view of the cushion body 1 showing one embodiment. Figure 1B It shows the constitution of Figure 1A A schematic perspective view of the core material 2 of the cushion body shown. As Figure 1A shown, the cushion body 1 is rectangular in plan view. The cushion body 1 extends in the long side direction D1 and the short side direction D2 orthogonal to the long side direction D1. The cushion body 1 has a thickness in the thickness direction D3 orthogonal to both the long side direction D1 and the short side direction D2.

[0041] The length of the long side direction D1 of the cushion body 1 is, for example, 120 cm or more and 210 cm or less (195 cm as an example). The length of the short side direction D2 of the cushion body 1 is, for example, 70 cm or more and 180 cm or less (97 cm as an example). The length of the thickness direction D3 of the cushion body 1 is, for example, 3 cm or more and 40 cm or less (9 cm as an example).

[0042] In this embodiment, the cushion body 1 is a mattress. The user of the cushion body 1 places their body on the cushion body 1. At this time, the direction in which the body of the lying user extends (i.e., the direction connecting the user's head and legs) is, for example, the same as the long side direction D1 of the cushion body 1.

[0043] As Figure 1B shown, the cushion body 1 has a core material 2 housed inside a cover cloth 3 described later. In this embodiment, the core material 2 is rectangular in plan view. The core material 2 has, for example, a content and a bag body for housing the content. The content is, for example, polyurethane foam or polyester. The material of the bag body is, for example, cotton or polyester.

[0044] The core material 2 is in the shape of a rectangular parallelepiped. The core material 2 has an upper surface 21 on which the user's body is placed and a lower surface 22 facing the side opposite to the upper surface 21. The upper surface 21 is the surface facing the side in the thickness direction D3 ( Figure 1B the upper side in Figure 1B ). The lower surface 22 is the surface facing the other side in the thickness direction D3 ( Figure 1B the lower side in Figure 1B ).

[0045] The core material 2 has a plurality of side surfaces 23 connecting the upper surface 21 and the lower surface 22. Hereinafter, for the sake of convenience of explanation, one side of the plurality of side surfaces 23 facing the short side direction D2 ( Figure 1B the upper right side in) is referred to as the first side surface 24, and the other side of the plurality of side surfaces 23 facing the short side direction D2 ( Figure 1B the lower left side in) is referred to as the second side surface 25. The first side surface 24 and the second side surface 25 extend along the long side direction D1 and the thickness direction D3. The first side surface 24 and the second side surface 25 are orthogonal to the short side direction D2.

[0046] One side of the plurality of side surfaces 23 facing the long side direction D1 ( Figure 1B the upper left side in) is referred to as the third side surface 26, and the other side of the plurality of side surfaces 23 facing the long side direction D1 ( Figure 1B the lower right side in) is referred to as the fourth side surface 27. The third side surface 26 and the fourth side surface 27 extend along the short side direction D2 and the thickness direction D3. The third side surface 26 and the fourth side surface 27 are orthogonal to the long side direction D1.

[0047] As Figure 1A shown, the cushion body 1 has a cover cloth 3. In the present embodiment, the cover cloth 3 is in the shape of a bag. The cover cloth 3 is rectangular in plan view. The cover cloth 3 has, for example, a front cover 31 covering the upper surface 21 of the core material 2, a back cover 32 covering the lower surface 22 of the core material 2, and an opening / closing member 33 connecting the front cover 31 and the back cover 32 to each other. The opening / closing member 33 is provided at a position of the cover cloth 3 facing the side surface 23 of the core material 2. When viewed from the thickness direction D3, the opening / closing member 33 is located outside the side surface 23 of the core material 2. The cover cloth 3 can be attached to and detached from the core material 2. "Can be attached to and detached from the core material" includes rolling up the cover cloth relative to the core material. "Can be detached from the core material" includes rolling up the cover cloth to expose at least a part of the core material.

[0048] As an example, the opening / closing member 33 is a so-called double slider. The opening / closing member 33 may also have two slider members 34 and an opening / closing portion 35 that opens and closes the front cover 31 and the back cover 32 by the sliding of the slider members 34. By opening the front cover 31 and the back cover 32, the front cover 31 is separated from the back cover 32, and by closing the front cover 31 and the back cover 32, the front cover 31 is joined to the back cover 32.

[0049] For example, by sliding one slider member 34 along the opening / closing portion 35 in one direction ( Figure 1A the clockwise direction in), and sliding the other slider member 34 along the opening / closing portion 35 in the other direction ( Figure 1A the counterclockwise direction in), the front cover 31 and the back cover 32 can be opened.

[0050] By sliding one slider member 34 along the opening / closing portion 35 in one direction and sliding the other slider member 34 along the opening / closing portion 35 in the other direction, the front mask 31 and the rear mask 32 can be closed. The opening / closing member 33 is also referred to as a single slider. In this case, the opening / closing member 33 has one slider member 34 and an opening / closing portion 35.

[0051] The cover cloth 3 has a fixed portion 36 to which the fixed portions 71 and 72 described later are fixed. The fixed portion 36 is provided on the back surface of the cover cloth 3. In the present embodiment, the cover cloth 3 has a plurality of fixed portions 36. The fixed portion 36 is provided, for example, at a position in the front mask 31 that faces the first side surface 24 of the core material 2. For example, the fixed portion 36 is provided at a position in the front mask 31 that faces the second side surface 25 of the core material 2.

[0052] A plurality of (eight as an example) fixed portions 36 are arranged along the long side direction D1 of the cover cloth 3. In Figure 1A the example, two fixed portions 36 are arranged along the thickness direction D3. Four columns formed by two fixed portions 36 are arranged along the long side direction D1. For example, the fixed portion 36 is the female member of the snap fastener 73 described later.

[0053] A sensor sheet 4 is mounted on the cushion body 1. The sensor sheet 4 acquires the vital data of the user of the cushion body 1. The vital data includes, for example, information related to the user's heartbeat, breathing, and body movement. The content of the vital data can be appropriately changed. The vital data may also include, for example, information related to blood pressure.

[0054] The sensor sheet 4 is disposed inside the bag-shaped cover cloth 3. More specifically, the sensor sheet 4 is disposed between the core material 2 and the cover cloth 3. When the sensor sheet 4 is mounted on the cushion body 1, the sensor sheet 4 is disposed so as to extend along the short side direction D2 of the cushion body 1.

[0055] The sensor sheet 4 is disposed, for example, at a position in the long side direction D1 of the sensor sheet 4 that faces the user's heart. As an example, the sensor sheet 4 is mounted at a position that is a certain distance away from the position where the user's head is placed along the long side direction D1 of the cushion body 1 ( Figure 1A the lower right position in). The mounting position of the sensor sheet 4 with respect to the cushion body 1 can be changed. The distance from the position where the user's head is placed to the position where the sensor sheet 4 is mounted can be, for example, 40 cm or more and 50 cm or less (50 cm as an example).

[0056] The sensor sheet 4 will be described in more detail. Figure 2FIG. 0 is a schematic top view of the sensor sheet 4 showing one embodiment. The sensor sheet 4 has a rectangular shape extending in one direction. The sensor sheet 4 includes a sheet-like fabric 41, a sensor unit 42, and a power supply unit 43.

[0057] The sheet-like fabric 41 is a sheet-like fabric that is rectangular when viewed from above. "Sheet-like" means a shape that extends in one direction and other directions intersecting with the one direction. That is, "sheet-like" represents a state of two-dimensionally expanding in two directions. Hereinafter, the long side direction of the sheet-like fabric 41 is referred to as the first direction A1, and the short side direction of the sheet-like fabric 41 is referred to as the second direction A2. The direction orthogonal to both the first direction A1 and the second direction A2 is referred to as the third direction A3.

[0058] For example, the length of the sheet-like fabric 41 in the first direction A1 is longer than the length of the short side direction D2 of the cushion body 1. In a state where the sensor sheet 4 is mounted on the cushion body 1, the central portion of the sheet-like fabric 41 is located on the upper surface 21 of the core material 2. In a state where the sensor sheet 4 is mounted on the cushion body 1, both end portions of the sheet-like fabric 41 in the first direction A1 face the side surfaces 23 (the first side surface 24 and the second side surface 25 respectively) of the core material 2. The central portion of the sheet-like fabric 41 faces the upper surface 21 of the core material 2. Both end portions of the sheet-like fabric 41 face the side surfaces 23 of the core material 2 in a state of being folded downward with respect to the central portion.

[0059] The length of the sheet-like fabric 41 in the first direction A1 is, for example, 76 cm or more and 260 cm or less (113 cm as an example). The length of the sheet-like fabric 41 in the second direction A2 is, for example, 10 cm or more and 70 cm or less (23 cm as an example).

[0060] The sheet-like fabric 41, for example, has stretchability. The sheet-like fabric 41 may also have a high stretchability to the extent that it does not interfere with the sleep comfort of the user. From the viewpoint of not interfering with the sleep comfort of the user, the sheet-like fabric 41 may have a stretchability of a certain level or more. On the sheet-like fabric 41, a filament sensor 47 is embroidered. The filament sensor 47 acquires biological data. The sheet-like fabric 41 may also have a low stretchability to the extent that it does not interfere with the acquisition of biological data by the filament sensor 47. From the viewpoint of accurately acquiring biological data, the sheet-like fabric 41 may have a stretchability of a certain level or less.

[0061] As an example, the stretchability of the sheet-like fabric 41 may be evaluated by the elongation elastic modulus. The elongation elastic modulus of the sheet-like fabric 41 is, for example, 15% or more and 35% or less (27.4% as an example). The measurement method of the elongation elastic modulus may use, for example, the method of JIS L1096.

[0062] For example, the sheet-like fabric 41 has a triple structure in which three fabrics are overlapped in the third direction A3. The sheet-like fabric 41 has an inner fabric 44 and a bag-shaped outer fabric 45 that houses the inner fabric 44. Inside the outer fabric 45, the inner fabric 44 and the outer fabric 45 are sewn together. As an example, the peripheral portion of the inner fabric 44 is sewn to the outer fabric 45. The length of the inner fabric 44 in the first direction A1 is shorter than the length of the outer fabric 45 in the first direction A1.

[0063] For example, the outer fabric 45 is made of a waterproof material. As an example, the outer fabric 45 can also be a fabric obtained by laminating or resin-treating the back surface of the fabric (the surface on the inner side of the outer fabric 45). The outer fabric 45 can also be a film fabric. The outer fabric 45 can also have hydrophobicity.

[0064] The sensor unit 42 has a main body unit 46 that acquires biological data and a filamentous sensor 47 that detects biological data. The main body unit 46 is fixed to the end portion of the inner fabric 44 in the first direction A1 ( Figure 2 the left end in the figure). The main body unit 46 outputs the acquired biological data to a device outside the sensor sheet 4. The main body unit 46 has, for example, an electrical function realized by electronic components (or electrical components). The functional structure of the main body unit 46 will be described later.

[0065] The filamentous sensor 47 detects the biological data of the user of the pad body 1. As an example, the filamentous sensor 47 is a piezoelectric sensor. However, the type of the filamentous sensor 47 is not particularly limited. For example, the filamentous sensor 47 is a single sensor, and a single filamentous sensor 47 is embroidered and fixed in the sheet-like fabric 41 in a two-dimensionally expanded manner. In Figure 2 the example, the filamentous sensor 47 has a shape symmetric with respect to the center line L. The center line L passes through the center of the second direction A2 of the sheet-like fabric 41. The center line L extends along the first direction A1.

[0066] The filamentous sensor 47 has a curved portion 48 that is curved in a plan view and a straight portion 49 that is straight in a plan view. For example, the curved portion 48 has a waveform shape in a plan view. The "waveform shape" includes a sine wave shape and a circular wave shape. The curved portion 48 has a first waveform portion 51 and a second waveform portion 52 arranged along the second direction A2.

[0067] The first waveform portion 51 is located on the side of the second direction A2 with respect to the center line L ( Figure 2 the upper side in the figure). The first waveform portion 51 has peaks 51a and valleys 51b alternately arranged along the first direction A1. The first waveform portion 51 has a plurality of peaks 51a and a plurality of valleys 51b. The peaks 51a protrude toward the side of the second direction A2 with respect to the center line L. The valleys 51b are portions recessed toward the center line L. In Figure 2In the example, the first waveform portion 51 has five peak portions 51a and four valley portions 51b.

[0068] The second waveform portion 52 is located on the other side of the center line L in the second direction A2 (the side opposite to the first waveform portion 51 when viewed from the center line L). The second waveform portion 52 has peak portions 52a and valley portions 52b that are alternately arranged along the first direction A1. The second waveform portion 52 has a plurality of peak portions 52a and a plurality of valley portions 52b. The peak portion 52a extends toward the other side of the second direction A2 with respect to the center line L. The valley portion 52b is a portion that is recessed toward the center line L. In Figure 2 the example, the second waveform portion 52 has five peak portions 52a and four valley portions 52b. The first waveform portion 51 and the second waveform portion 52 are connected to each other at the end of the sheet-like fabric 41A on the side opposite to the main body portion 46 ( Figure 2 the right end in).

[0069] For example, the length of the first waveform portion 51 in the first direction A1 and the length of the second waveform portion 52 in the first direction A1 are equal to each other. The lengths of the first waveform portion 51 and the second waveform portion 52 in the first direction A1 are, for example, 30 cm or more and 180 cm or less (56 cm as an example).

[0070] The length of the first waveform portion 51 in the second direction A2 and the length of the second waveform portion 52 in the second direction A2 are equal to each other. The lengths of the first waveform portion 51 and the second waveform portion 52 in the second direction A2 are, for example, 2 cm or more and 30 cm or less (6 cm as an example). In addition, the length of the first waveform portion 51 in the second direction A2 is the length along the second direction A2 from the top of the peak portion 51a to the bottom of the valley portion 51b. The length of the second waveform portion 52 in the second direction A2 is the length along the second direction A2 from the top of the peak portion 52a to the bottom of the valley portion 52b.

[0071] The straight portion 49 is a portion that extends along the first direction A1. The straight portion 49 has a first straight portion 53 and a second straight portion 54 that are arranged along the second direction A2. The first straight portion 53 is located at a position on the side of the second direction A2 with respect to the center line L. One end of the first straight portion 53 in the first direction A1 is connected to the end of the first waveform portion 51 in the first direction A1 ( Figure 2 the left end in). The end of the first straight portion 53 on the side opposite to the first waveform portion 51 is connected to the main body portion 46.

[0072] The second straight portion 54 is located on the other side of the center line L in the second direction A2 (the side opposite to the first straight portion 53 when viewed from the center line L). One end of the second straight portion 54 in the first direction A1 is connected to the end portion of the second corrugated portion 52 in the first direction A1. The end portion of the second straight portion 54 on the side opposite to the second corrugated portion 52 is connected to the main body portion 46.

[0073] For example, the lengths of the first straight portion 53 and the second straight portion 54 in the first direction A1 are equal to each other. The length of the first straight portion 53 in the first direction A1 is, for example, 1 cm or more and 50 cm or less (24 cm as an example). The length of the second straight portion 54 in the first direction A1 is, for example, 1 cm or more and 50 cm or less (24 cm as an example).

[0074] In the filamentous sensor 47 serving as one sensor, the first corrugated portion 51, the second corrugated portion 52, the first straight portion 53, and the second straight portion 54 are connected to each other. The filamentous sensor 47 is installed so as to extend along both the first direction A1 and the second direction A2 at the position where the curved portion 48 is disposed.

[0075] The power supply unit 43 supplies power to the main body portion 46. By supplying power from the power supply unit 43 to the main body portion 46, the sensor unit 42 is activated. The power supply unit 43 has, for example, a power cord 61 and a power plug 62. One end of the power cord 61 is connected to the main body portion 46 of the sensor unit 42. A connector 63 connected to the power plug 62 is provided at the other end of the power cord 61. The power cord 61 and the power plug 62 are connected to each other via the connector 63. The type of the connector 63 is not particularly limited. The connector 63 may also be, for example, a connector of the USB (Universal Serial Bus) Type-C (registered trademark) standard.

[0076] The power plug 62 is inserted into, for example, a household socket. The power plug 62 may also be connected to a battery. Different from the example of Figure 2 , the power supply unit 43 may not have the power plug 62. In this case, for example, the connector 63 of the power cord 61 is inserted into the battery. The power supply unit 43 supplies power from the battery to the main body portion 46, thereby activating the sensor unit 42.

[0077] The sensor sheet 4 includes fixing portions 71 and 72. For example, the fixing portions 71 and 72 are portions for fixing the sheet-like fabric 41 to the cover cloth 3. The fixing portions 71 and 72 can be attached to and detached from the cover cloth 3. The fixing portion 71 is provided on one end side of the sheet-like fabric 41 in the first direction A1. The fixing portion 72 is provided on the other end side of the sheet-like fabric 41 in the first direction A1.

[0078] The fixing parts 71 and 72 each have a snap fastener 73. The snap fasteners 73 of the fixing parts 71 and 72 are, for example, male parts of the snap fasteners 73 that are engaged with the female parts of the snap fasteners 73 constituting the fixed part 36 of the cover cloth 3. The fixing parts 71 and 72 each have a plurality (four as an example) of snap fasteners 73.

[0079] In the fixing part 71, two snap fasteners 73 arranged along the first direction A1 are provided on one end side in the second direction A2 of the sheet-like fabric 41. In the fixing part 71, two snap fasteners 73 arranged along the first direction A1 are provided on the other end side in the second direction A2 of the sheet-like fabric 41. In the fixing part 71, the plurality of snap fasteners 73 are arranged in a polygonal shape. However, the plurality of snap fasteners 73 may also be arranged in a straight line. In the present embodiment, the four snap fasteners are arranged in a quadrilateral shape (a rectangular shape as an example). The arrangement of the snap fasteners 73 in the fixing part 72 is the same as the arrangement of the snap fasteners 73 in the fixing part 71. Therefore, the description related to the arrangement of the snap fasteners 73 in the fixing part 72 is omitted.

[0080] In a state where the sensor sheet 4 is attached to the cushion body 1, for example, the first direction A1 of the sensor sheet 4 coincides with the short side direction D2 of the cushion body 1. At this time, the second direction A2 of the sensor sheet 4 coincides with the long side direction D1 of the cushion body 1. The portion of the sheet-like fabric 41 where the fixing parts 71 and 72 are not provided is disposed between the upper surface 21 of the core material 2 and the cover cloth 3. The fixing part 71 is disposed between the first side surface 24 of the core material 2 and the cover cloth 3. The fixing part 72 is disposed between the second side surface 25 of the core material 2 and the cover cloth 3.

[0081] Figure 3 It is a schematic view showing an enlarged view of the fixing part of the sensor sheet 4 and the cover cloth 3. Figure 3 The figure shows a state where the front cover 31 of the cover cloth 3 is rolled up toward the upper surface 21 side of the core material 2 in a state where the sensor sheet 4 is fixed to the cover cloth 3. The fixing parts 71 and 72 fix the sheet-like fabric 41 to the cover cloth 3 at positions between the side surface 23 of the core material 2 and the cover cloth 3. For example, the fixing parts 71 and 72 fix the sheet-like fabric 41 to the cover cloth 3 via the snap fasteners 73.

[0082] In a state where the core material 2 is housed in the cover cloth 3, two snap fasteners 73 are respectively fixed to the fixed part 36 of the cover cloth 3 (refer to Figure 1A ). As described above, the fixed part 36 has two snap fasteners 73 arranged along the thickness direction D3 in the cover cloth 3. Each of the two snap fasteners 73 in the fixing part 72 is engaged with each of the two snap fasteners 73 in the cover cloth 3. The fixing part 71 is also engaged with the snap fasteners 73 of the fixed part 36 of the cover cloth 3 in the same manner as the fixing part 72.

[0083] By using a plurality of snap buttons 73 to fix the sensor sheet 4 to the cover cloth 3, it is possible to more reliably suppress the positional deviation of the sensor sheet 4 when the user's body is placed on the mat 1. Since the fixing portions 71 and 72 fix the sensor sheet 4 to the cover cloth 3 via the snap buttons 73, the sensor sheet 4 can be easily detached from the cover cloth 3.

[0084] Figure 4 It is a perspective view showing an enlarged main body portion 46. The main body portion 46 has an electrical functional portion 81, a mounting member 82, and a screw 83. The electrical functional portion 81 is a portion having an electrical function realized by electronic components (or electrical components). For example, the electrical functional portion 81 has an electronic component and a housing 84 that houses the electronic component. The electronic component is electrically connected to the filament sensor 47.

[0085] The housing 84 has an insertion port 84a into which one end of the power supply line 61 is inserted. The insertion port 84a is formed, for example, on the side surface of the housing 84 (as an example, the surface facing the first direction A1). The housing 84 has an insertion hole for inserting the screw 83. The housing 84 has a plurality of (as an example, four) insertion holes. A screw thread groove for screwing the screw 83 is provided on the inner surface of the insertion hole.

[0086] The mounting member 82 is a member for mounting the electrical functional portion 81 on the sheet-like fabric 41. The mounting member 82 has a plate-like portion 85 and a protruding portion 86. The plate-like portion 85 is a plate-like portion extending in the first direction A1 and the second direction A2. The plate-like portion 85 has a through hole 87 that penetrates the plate-like portion 85 in the thickness direction D3. The plate-like portion 85 has a plurality of (as an example, 4) through holes 87. The protruding portion 86 is a portion that protrudes from the end of the plate-like portion 85 in the first direction A1 ( Figure 4 the right lower end in) in the third direction A3.

[0087] When fixing the main body portion 46 to the sheet-like fabric 41, the electrical functional portion 81 is disposed on the sheet-like fabric 41 (the inner sheet fabric 44 or the outer sheet fabric 45). Figure 4 In, an example is shown in which the electrical functional portion 81 is disposed on the surface of the inner sheet fabric 44 ( Figure 4 the upper side surface in). However, the electrical functional portion 81 can also be disposed on the back surface of the inner sheet fabric 44 or the outer sheet fabric 45. The arrangement position of the electrical functional portion 81 with respect to the sheet-like fabric 41 can be appropriately changed. When the electrical functional portion 81 is disposed on the surface of the inner sheet fabric 44, the mounting member 82 is disposed on the back surface of the inner sheet fabric 44 ( Figure 4 the lower side surface in). At this time, the plate-like portion 85 is in contact with the back surface of the inner sheet fabric 44. The plate-like portion 85 has the protruding portion 86 protruding more in the first direction A1 than the end of the inner sheet fabric 44 in the first direction A1 and protruding in the third direction A3 (the direction in which the electrical functional portion 81 is located when viewed from the plate-like portion 85, in Figure 4configured in a protruding manner with the middle being on the upper side).

[0088] Insert the screw 83 through the through-hole 87 along the third direction A3. For example, a hole for inserting the screw 83 is formed in the sheet-like fabric 41 (inner fabric 44 or outer fabric 45). The screw 83 inserted through the through-hole 87 penetrates through this hole. In Figure 4 this example, the electrical functional part 81 is arranged on the inner fabric 44 of the sheet-like fabric 41. Therefore, the through-hole 87 is formed in the inner fabric 44 of the sheet-like fabric 41, and no through-hole 87 is formed in the outer fabric 45. When the electrical functional part 81 is arranged on the outer fabric 45, the through-hole 87 can be formed only in the outer fabric 45, or the through-hole 87 can be formed in both the inner fabric 44 and the outer fabric 45. Thread the screw 83 inserted through the through-hole 87 into the screw engagement groove of the insertion hole of the housing 84. As a result, the inner fabric 44 is sandwiched between the electrical functional part 81 and the mounting part 82, and the main body part 46 is fixed to the sheet-like fabric 41.

[0089] The structure of the main body part 46 and the fixing method relative to the sheet-like fabric 41 are not limited to the above method. The main body part 46 may not be fixed to the sheet-like fabric 41.

[0090] The sensing system 100 including the above-mentioned sensor sheet 4 will be described. Figure 5 It is a block diagram showing the sensing system 100 of one embodiment. The sensing system 100 includes, for example, the aforementioned sensor sheet 4, the server 101, and the terminal 102. The sensor sheet 4 and the server 101 are connected in a communicable manner. The server 101 and the terminal 102 are connected in a communicable manner. The communication between the sensor sheet 4 and the server 101 and the communication between the server 101 and the terminal 102 can be realized, for example, through a wireless communication interface such as a wireless LAN (Local Area Network) or Bluetooth (registered trademark).

[0091] The main body part 46 of the sensor sheet 4 functionally has an acquisition part 103 and an output part 104. The acquisition part 103 acquires the user's vital data acquired by the sensor part 42 (refer to Figure 2 ). The output part 104 outputs the vital data acquired by the acquisition part 103 to the server 101.

[0092] Server 101 outputs the vital data output from the sensor sheet 4 to the terminal 102. The terminal 102, for example, analyzes the vital data obtained from the server 101. The terminal 102 displays the analyzed data to the user of the sensing system 100. The user of the sensing system 100 can be a person who uses the sensing system 100 to sense the sleep of the user of the pad 1, or a person who confirms the analysis result of the vital data output from the sensor sheet 4. The user of the sensing system 100 can be either the user of the pad 1 or a person different from the user of the pad 1.

[0093] The sensing system 100 can also be software that can be downloaded to the terminal 102, for example. In this case, the user of the sensing system 100 who downloads the software to the terminal 102 can display the analysis result of the vital data output from the sensor sheet 4 on the terminal 102. The terminal 102 can be, for example, a smart phone, a tablet computer, or a personal computer. The vital data can also be analyzed by the server 101. In this case, the terminal 102 displays the data analyzed by the server 101. The user of the sensing system 100 obtains information related to the heartbeat, breathing, and body movement of the user of the pad 1 during sleep by confirming the data displayed on the terminal 102. The sensing system 100 may not include the server 101. The sensor sheet 4 and the terminal 102 can also be connected in a manner that enables direct communication with each other.

[0094] The effects of the sensor sheet 4 and the pad 1 will be described. As Figure 1A , Figure 1B , Figure 2 and Figure 3 shown, the sensor sheet 4 and the pad 1 include fixing parts 71, 72 for fixing the sheet-like fabric 41 to the cover 3. By fixing the sheet-like fabric 41 to the cover 3 with the fixing parts 71, 72, when the body of the user of the pad 1 is placed on the pad 1, the positional deviation of the sensor sheet 4 can be suppressed.

[0095] For example, when the filamentous sensor 47 is directly embroidered on the cover 3, it is not easy to remove the filamentous sensor 47 from the cover 3, so the cover 3 cannot be washed. In contrast, in this sensor sheet 4, since the fixing parts 71, 72 can be attached to and detached from the cover 3, the sensor sheet 4 can be easily detached from the cover 3 removed from the core material 2. Therefore, the cover 3 can be easily washed.

[0096] The sensor sheet 4 includes a sheet-like fabric 41 and a filamentous sensor 47 embroidered on the sheet-like fabric 41. For example, one filamentous sensor 47 is embroidered and installed in a two-dimensional extended manner in the sheet-like fabric 41. A wide range of vital data can be obtained through the filamentous sensor 47, and the number of filamentous sensors 47 can be reduced to one. As a result, the electrical system such as connectors can be simplified.

[0097] The core material 2 has an upper surface 21 on which the user's body is placed, a lower surface 22 facing the side opposite to the upper surface 21, and side surfaces 23 connecting the upper surface 21 and the lower surface 22. The fixing parts 71, 72 fix the sheet-like fabric 41 to the cover cloth 3 at positions between the side surfaces 23 of the core material 2 and the cover cloth 3. For example, when the fixing parts 71, 72 fix the sheet-like fabric 41 to the cover cloth 3 at positions between the upper surface 21 on which the user's body is placed and the cover cloth 3, when the user's body is placed on the cushion 1, the fixing parts 71, 72 come into contact with the user's body, which may cause discomfort to the user. In contrast, it is possible to avoid causing discomfort to the user when the fixing parts 71, 72 fix the sheet-like fabric 41 to the cover cloth 3 between the side surfaces 23 of the core material 2 and the cover cloth 3.

[0098] For example, the core material 2 and the cover cloth 3 are rectangular in plan view. The cover cloth 3 has a plurality of parts to be fixed 36 for fixing the fixing parts 71, 72. The plurality of parts to be fixed 36 are arranged along the long side direction D1 of the cover cloth 3. When the user's body is placed on the cushion 1, the user's body is placed along the long side direction D1 of the cover cloth 3. When the plurality of parts to be fixed 36 are arranged along the long side direction D1 of the cover cloth 3, the fixing position of the sensor sheet 4 can be arbitrarily changed along the long side direction D1 of the cover cloth 3. Thus, for example, the position of the sensor sheet 4 in the long side direction D1 of the cover cloth 3 can be adjusted according to the build of the user. Furthermore, the position of the sensor sheet 4 can be freely changed according to the part of the body for which life data is to be measured. Since the sensor sheet 4 can be arranged at an appropriate position relative to the user accurately, the life data of the user can be obtained more accurately.

[0099] For example, the fixing parts 71, 72 have snap buttons 73, and the sheet-like fabric 41 is fixed to the cover cloth 3 via the snap buttons 73. In this case, the sensor sheet 4 can be attached to and detached from the cover cloth 3 more easily via the snap buttons 73. For example, compared with the case where the fixing parts 71, 72 have hook-and-loop fasteners instead of the snap buttons 73, the discomfort when the fixing parts 71, 72 come into contact with the user's body can be reduced.

[0100] For example, the sheet-like fabric 41 has an inner fabric 44 embroidered with the filamentous sensor 47 and an outer fabric 45 that houses the inner fabric 44. The outer fabric 45 has waterproof properties. The filamentous sensor 47 is sometimes intolerant to moisture. In this case, when the filamentous sensor 47 comes into contact with water, the detection accuracy of the filamentous sensor 47 may decrease. When the inner fabric 44 embroidered with the filamentous sensor 47 is housed in the waterproof outer fabric 45, the contact between moisture and the filamentous sensor 47 can be suppressed. Therefore, the decrease in the detection accuracy of the filamentous sensor 47 can be suppressed.

[0101] For example, the filamentous sensor 47 has a curved portion 48 that is curved when viewed from above. In the curved portion 48 where the filamentous sensor 47 is curved, the detection accuracy is higher compared to, for example, the straight portion of the filamentous sensor 47. When the filamentous sensor 47 has a curved portion 48 that is curved when viewed from above, the detection accuracy of the filamentous sensor 47 can be improved.

[0102] The embodiments of the sensor sheet and the pad of the present disclosure have been described above. However, the sensor sheet and the pad of the present disclosure are not limited to the foregoing embodiments and can be appropriately changed within the scope of the gist described in the technical solution.

[0103] The sensor sheet 4 of the foregoing embodiment can be attached to and detached from the inner side (back surface) of the cover cloth 3. However, the sensor sheet can be configured to be attachable to and detachable from the outer side (front surface) of the cover cloth or to be attachable to and detachable from the core material. Hereinafter, a modified sensor sheet 4A will be described. Figure 6 is a schematic plan view showing the modified sensor sheet 4A. In Figure 6 the illustration of the sensor portion 42 and the power supply portion 43 in the structure of the sensor sheet 4A is omitted. Figure 7 is a schematic perspective view showing the core material 2 to which the Figure 6 shown sensor sheet 4A is attached. In the following description, the differences from the foregoing sensor sheet 4 will be mainly described, and the same reference numerals will be used and repeated descriptions will be appropriately omitted.

[0104] The sensor sheet 4A includes a sheet-like fabric 41A having a different form from the sheet-like fabric 41. The length of the first direction A1 of the sheet-like fabric 41A is, for example, substantially the same as the length of the short side direction D2 of the core material 2. The length of the first direction A1 of the sheet-like fabric 41A is, for example, 20 cm or more and 200 cm or less. The length of the second direction A2 of the sheet-like fabric 41A is, for example, 10 cm or more and 70 cm or less.

[0105] Similarly to the above, the sensor sheet 4A has a filamentous sensor 47 embroidered on the sheet-like fabric 41A. The filamentous sensor 47 is a single sensor, and a single filamentous sensor 47 is fixed to the sheet-like fabric 41A in a two-dimensionally expanded manner. The filamentous sensor 47 has a curved portion 48 and a straight portion 49. The curved portion 48 has a waveform shape when viewed from above.

[0106] The sensor sheet 4A has fixing parts 71A and 72A with a different form from the fixing parts 71 and 72. The fixing parts 71A and 72A (other fixing parts) fix the sheet-like fabric 41A to the core material 2. The fixing parts 71A and 72A can be attached to and detached from the core material 2. The fixing parts 71A and 72A are strip-shaped members extending in the first direction A1. The fixing parts 71A and 72A are, for example, in the shape of an isosceles trapezoid. The length of each of the fixing parts 71A and 72A in the second direction A2 becomes shorter as it moves away from the sheet-like fabric 41A.

[0107] The fixing parts 71A and 72A are each made of, for example, a stretchable mesh material. In this case, by making the fixing parts 71A and 72A stretchable, the movement of the sensor sheet 4A can be easily performed, and the air permeability of the fixing parts 71A and 72A can be improved. However, the constituent material of the fixing parts 71A and 72A may not be a stretchable material, and there is no particular limitation. The shape of the fixing parts 71A and 72A may also be, for example, rectangular, and is not limited to the isosceles trapezoid shape.

[0108] For example, the length of each of the fixing parts 71A and 72A in the first direction A1 is shorter than the length of the sheet-like fabric 41A in the first direction A1. For example, the length of the fixing part 71A in the first direction A1 and the length of the fixing part 72A in the first direction A1 are the same as each other. For example, the sensor sheet 4A is mounted on the core material 2 in a manner of being wound around the core material 2. The lengths of the fixing parts 71A and 72A in the first direction A1 may also be different from each other, as long as they are lengths that can be wound around the core material 2.

[0109] The fixing part 71A is connected to one end of the sheet-like fabric 41A in the first direction A1 ( Figure 6 the right end in the figure). The fixing part 71A has a first fixing member 91. The first fixing member 91 is provided on one end side of the fixing part 71A in the first direction A1 ( Figure 6 the right end side in the figure). The first fixing member 91 is, for example, a loop (female member) of a hook-and-loop fastener.

[0110] The fixing part 72A is connected to the other end of the sheet-like fabric 41A in the first direction A1 ( Figure 6 the left end in the figure). The fixing part 72A has a second fixing member 92. The second fixing member 92 is provided on the other end side of the fixing part 72A in the first direction A1 ( Figure 6 the left end side in the figure). The second fixing member 92 is, for example, a hook (male member) of a hook-and-loop fastener.

[0111] The first fixing member 91 and the second fixing member 92 are not limited to hook-and-loop fasteners. The first fixing member 91 and the second fixing member 92 can be, for example, linear fasteners or snap fasteners. When the first fixing member 91 and the second fixing member 92 are snap fasteners, for example, the first fixing member 91 is the female part of the snap fastener and the second fixing member 92 is the male part of the snap fastener.

[0112] The first fixing member 91 and the second fixing member 92 enable the fixing portion 71A to be detachably attached to the fixing portion 72A. The fixing portions 71A and 72A are fixed to each other via the first fixing member 91 and the second fixing member 92. For example, the length of the first fixing member 91 in the first direction A1 is longer than the length of the second fixing member 92 in the first direction A1.

[0113] The fixing portions 71A and 72A each have a support 93 at an adjacent portion of the sheet-like fabric 41A. The support 93 of the fixing portion 71A is provided at an end portion of the fixing portion 71A on the side opposite to the first fixing member 91. The support 93 of the fixing portion 72A is provided at an end portion of the fixing portion 72A on the side opposite to the second fixing member 92.

[0114] The support 93 is made of a material that is less deformable than the constituent materials of the fixing portions 71A and 72A. For example, the hardness of the support 93 is higher than the hardness of the fixing portions 71A and 72A. The hardness of the support 93, the fixing portion 71A, and the fixing portion 72A can be measured, for example, using the measurement method specified by JIS K7215:1986. The support 93 is, for example, in the shape of an isosceles trapezoid. The support 93 is formed, for example, along the shape of the end portion of the fixing portions 71A and 72A close to the sheet-like fabric 41A. In this case, the support 93 is in the shape of a trapezoid. The support 93 is arranged such that the lower base of the support 93 extends along the lower base of the trapezoid-shaped fixing portions 71A and 72A, and the waist of the trapezoid of the support 93 extends along the waist of the trapezoid of the fixing portions 71A and 72A.

[0115] As Figure 7 shown, the sensor sheet 4A is mounted on the core material 2 for use. A method of mounting the sensor sheet 4A on the core material 2 will be described. First, the sheet-like fabric 41A of the sensor sheet 4A is disposed on the upper surface 21 of the core material 2. For example, the sheet-like fabric 41A is disposed on the upper surface 21 in a state where the first direction A1 of the sheet-like fabric 41A is aligned with the short side direction D2 of the core material 2.

[0116] As described above, the length of the first direction A1 of the sheet-like fabric 41A may also be substantially the same as the length of the short side direction D2 of the core material 2. In this case, in a state where the sheet-like fabric 41A is disposed on the upper surface 21 of the core material 2, it is disposed over the entire short side direction D2 of the core material 2. In a state where the sheet-like fabric 41A is disposed on the upper surface 21 of the core material 2, the fixing portions 71A and 72A are disposed on the lower surface 22 of the core material 2. At this time, the fixing portions 71A and 72A are bent downward with respect to the sheet-like fabric 41A, respectively, and the bent fixing portions 71A and 72A are moved downward below the lower surface 22. The fixing portions 71A and 72A are fixed to each other on the lower surface 22 of the core material 2. The hook (second fixing member 92) of the fixing portion 72A is engaged with the loop (first fixing member 91) of the fixing portion 71A. Thus, the fixing portions 71A and 72A are fixed to each other via the first fixing member 91 and the second fixing member 92.

[0117] In a state where the sensor sheet 4A is mounted on the core material 2, the support body 93 of the fixing portion 71A faces the first side surface 24 of the core material 2. The support body 93 of the fixing portion 72A faces the second side surface 25 of the core material 2. As described above, the lengths of the first direction A1 of the fixing portions 71A and 72A may also be the same as each other. The fixing portions 71A and 72A are fixed to each other substantially at the center in the short side direction D2 of the lower surface 22 of the core material 2. The sensor sheet 4A is mounted on the core material 2 in a manner of being wound around the core material 2. Through the above steps, by housing the core material 2 on which the sensor sheet 4A is mounted in the cover cloth, the mat body on which the sensor sheet 4A is mounted is completed.

[0118] The function and effect of the sensor sheet 4A will be described. The sensor sheet 4A includes fixing portions 71A and 72A that fix the sheet-like fabric 41A to the core material 2. The fixing portions 71A and 72A fix the sheet-like fabric 41A to the core material 2, thereby being able to suppress the positional deviation of the sensor sheet 4A when the body of the user of the mat body is placed on the mat body. In the sensor sheet 4A, since the fixing portions 71A and 72A can be attached to and detached from the core material 2, the sensor sheet 4A can be easily detached from the core material 2 from which the cover cloth has been removed.

[0119] The sensor sheet 4A includes a sheet-like fabric 41A and a filamentous sensor 47 embroidered on the sheet-like fabric 41A. A wide range of biological data can be obtained through the filamentous sensor 47, and the number of filamentous sensors 47 can be reduced. As a result, the electrical system such as a connector can be simplified.

[0120] When the mat body having the sensor sheet 4A is placed on the placement surface (such as the floor surface, etc.), the back surface of the mat body (the surface on the lower surface 22 side of the core material 2) contacts the placement surface. At this time, the fixing portions 71A and 72A are sandwiched between the lower surface 22 of the core material 2 and the placement surface, thereby being able to suppress the accidental movement of the sensor sheet 4A. Therefore, it is possible to further reliably suppress the positional deviation of the sensor sheet 4A.

[0121] In the sensor sheet 4A, the fixing portions 71A and 72A extending from both ends in the first direction A1 of the sheet-like material 41A are fixed to be detachable from each other via the first fixing member 91 and the second fixing member 92. By the first fixing member 91 and the second fixing member 92, the fixing portions 71A and 72A can be fixed to the core material 2 more firmly.

[0122] The first fixing member 91 and the second fixing member 92 can be removed, and the sensor sheet 4A can be easily moved to a desired portion of the core material 2. Since the sensor sheet 4A can be easily moved to a desired portion of the core material 2, for example, the position of the sensor sheet 4A in the long side direction D1 of the core material 2 can be adjusted according to the physique of the user.

[0123] For example, when the user's head is placed on one end side in the long side direction D1 of the mat body and used for a long time, there may be a situation where the sinking amount of this one end side is too large due to aging. In this case, sometimes the user's head is placed on the other end side in the long side direction D1 of the mat body to use the mat body. In the case of using the mat body in this way, the sensor sheet 4A can also be easily moved to a desired portion of the core material 2. Therefore, for example, according to the direction in which the body of the user placed on the mat body extends, the position of the sensor sheet 4A in the long side direction D1 of the core material 2 can be easily adjusted.

[0124] In the sensor sheet 4A, the length of the first fixing member 91 in the first direction A1 is longer than the length of the second fixing member 92 in the first direction A1. In this case, the fixing position of the second fixing member 92 relative to the first fixing member 91 can be arbitrarily changed along the first direction A1. Since the length of the fixing portions 71A and 72A wound around the core material 2, that is, the length of the portions of the fixing portions 71A and 72A wound around the core material 2, can be freely changed, the sensor sheet 4A can be mounted on mats of various sizes.

[0125] When the user's body is placed on the sensor sheet 4A, the sensor sheet 4A may be flattened in the thickness direction D3 due to the user's weight. At this time, the sensor sheet 4A sometimes extends in the short side direction D2 of the core material 2, and a gap may be generated between the side surface 23 of the core material 2 and the fixing portions 71A, 72A. As a result, the fixing of the sensor sheet 4A by the fixing portions 71A, 72A becomes insufficient, and the position of the sensor sheet 4A may shift.

[0126] In contrast, in the sensor sheet 4A, the fixing portions 71A, 72A each have a support body 93. In a state where the sensor sheet 4A is attached to the core material 2, the support body 93 faces the side surface 23 of the core material 2. Thereby, it is possible to suppress deformation of the fixing portions 71A, 72A on the side surface 23 of the core material 2 when the user's body is placed on the sensor sheet 4A. As a result, it is possible to suppress the generation of a gap between the side surface 23 of the core material 2 and the fixing portions 71A, 72A, and it is possible to more reliably suppress the position shift of the sensor sheet 4A.

[0127] The deformation examples of the sensor sheet and the pad body of the present disclosure have been described above. However, the sensor sheet and the pad body of the present disclosure can be further deformed. For example, in the above, an example in which the curved portion 48 of the filamentous sensor 47 has a waveform shape has been described. However, the shape of the filamentous sensor 47 is not limited to the waveform shape. For example, the filamentous sensor 47 may not have the curved portion 48. As Figure 8A shown, the filamentous sensor 47 may have a triangular wave shape. In this case, the first waveform portion 51 and the second waveform portion 52 arranged in the second direction A2 are formed by the filamentous sensor 47 arranged in a straight line. The filamentous sensor 47 may have a rectangular wave shape or a diamond wave shape. As Figure 8B shown, the filamentous sensor 47 may have a sawtooth shape. In this case, the filamentous sensor 47 does not have two waveform portions arranged in the second direction A2, but has one waveform portion. This waveform portion is formed by the filamentous sensor 47 arranged in a straight line.

[0128] In the above, an example in which the sensor sheet 4 has the fixing portions 71, 72 for fixing the sheet-like fabric 41 to the cover cloth 3 has been described. However, the fixing portions 71, 72 may also fix the sheet-like fabric 41 to the core material housed in the cover cloth. The fixing portions 71, 72 may be configured to be detachable from the core material. In this case, the fixing portions 71, 72 may fix the sheet-like fabric 41 to the core material via the snap fastener 73. When the fixing portions 71, 72 fix the sheet-like fabric 41 to the core material, the core material 2 of the above-described embodiment may also have the fixed portions 36 on the first side surface 24 and the second side surface 25 of the core material 2. For example, a plurality of the fixed portions 36 may be arranged in the long side direction D1 of the core material 2.

[0129] In the above-described embodiment, an example in which the sensor sheet 4 is disposed between the upper surface 21 of the core material 2 and the surface 31 of the cover cloth 3 when the sensor sheet 4 is mounted on the cushion body 1 has been described. When the sensor sheet 4 is disposed between the upper surface 21 of the core material 2 and the front cover 31 of the cover cloth 3, the detection accuracy of the sensor sheet 4 can be improved. However, the sensor sheet 4 may also be disposed between the lower surface 22 of the core material 2 and the back cover 32 of the cover cloth 3.

[0130] In the above, an example in which the fixing portions 71, 72 have the snap fasteners 73 has been described. However, the fixing portions 71, 72 may also have fixing members other than the snap fasteners 73. For example, the fixing portions 71, 72 may have at least one of a hook-and-loop fastener and a linear fastener instead of the snap fasteners 73. In this case, the core material 2 or the cover cloth 3 has a hook-and-loop fastener or a linear fastener as the fixed portion 36.

[0131] In the above, an example in which the fixing portions 71A, 72A of the sensor sheet 4A each have the support body 93 has been described. However, the fixing portions 71A, 72A may not have the support body 93 respectively. In the above, an example in which the fixing portion 71A has the first fixing member 91 and the fixing portion 72A has the second fixing member 92 has been described. However, the fixing portions 71A, 72A may not have the fixing members (the first fixing member 91 or the second fixing member 92). In this case, the sheet-like fabric 41A may also be fixed to the core material 2 by sandwiching the fixing portions 71A, 72A between the lower surface 22 of the core material 2 and the placement surface.

[0132] In the above, an example in which the lengths of the fixing portions 71A, 72A are such that they can be wound around the core material 2 has been described. However, when the sensor sheet 4A is fixed to the core material 2 by sandwiching the fixing portions 71A, 72A between the lower surface 22 of the core material 2 and the placement surface, the lengths of the fixing portions 71A, 72A may also be shorter than those in the above-described modification example. More specifically, the lengths of the fixing portions 71A, 72A only need to be such that, on the basis of disposing the sheet-like fabric 41A on the upper surface 21 of the core material 2, the fixing portions 71A, 72A can be sandwiched between the lower surface 22 of the core material 2 and the placement surface.

[0133] In the above, an example in which the sheet-like fabric 41 is rectangular in plan view has been described. And an example in which the sheet-like fabric 41A is rectangular in plan view has been described. However, the shapes of the sheet-like fabrics 41, 41A only need to be sheet-like and are not limited to rectangular shapes. For example, the sheet-like fabrics 41, 41A may also have a major axis extending in the long side direction and a minor axis extending in the short side direction and intersecting the major axis in plan view. The sheet-like fabrics 41, 41A may also be, for example, oval-shaped extending in the long side direction or polygonal shapes other than rectangular shapes.

[0134] [Description of Reference Numerals]

[0135] 1…Pad body, 2…Core material, 3…Cover cloth, 4, 4A…Sensor sheet, 21…Upper surface, 22…Lower surface, 23…Side surface, 24…First side surface, 25…Second side surface, 26…Third side surface, 27…Fourth side surface, 31…Front cover, 32…Back cover, 33…Opening / closing member, 34…Slider member, 35…Opening / closing part, 36…Fixed part, 41, 41A…Sheet-like fabric, 42…Sensor part, 43…Power supply part, 44…Inner side fabric, 45…Outer side fabric, 46…Main body part, 47…Filamentous sensor, 48…Curved part, 49…Straight part, 51…First waveform part, 51a, 52a…Peak part, 51b, 52b…Valley part, 52…Second waveform part, 53…First straight part, 54…Second straight part, 61…Power line, 62…Power plug, 63…Connector, 71, 71A, 72…Fixing part, 72A…Fixing part (other fixing part), 73…Snap fastener, 81…Electrical function part, 82…Mounting part, 83…Screw, 84…Housing, 84a…Insertion port, 85…Plate-like part, 86…Protrusion, 87…Through hole, 91…First fixing member, 92…Second fixing member, 93…Support body, 100…Sensing system, 101…Server, 102…Terminal, 103…Obtaining part, 104…Output part, A1…First direction (long side direction), A2…Second direction (short side direction), A3…Third direction, D1…Long side direction, D2…Short side direction, D3…Thickness direction, L…Center line.

Claims

1. A sensor sheet is installed on a cushion body and obtains life data of a user of the cushion body. The cushion body includes a core material made of a flexible material and a cover cloth that houses the core material and can be attached to and detached from the core material. The sensor sheet includes: A sheet-like fabric; A filamentous sensor embroidered on the sheet-like fabric; and A fixing portion that fixes the sheet-like fabric to at least one of the core material and the cover cloth, The fixing portion can be attached to and detached from at least one of the core material and the cover cloth.

2. The sensor sheet according to claim 1, wherein The core material has an upper surface on which the user's body is placed, a lower surface facing the side opposite to the upper surface, and a side surface connecting the upper surface and the lower surface, The fixing portion fixes the sheet-like fabric to the cover cloth at a position between the side surface of the core material and the cover cloth.

3. The sensor sheet according to claim 2, wherein The core material and the cover cloth are rectangular in plan view, The cover cloth has a plurality of fixing parts for fixing the fixing portion, The plurality of fixing parts are arranged along the long side direction of the cover cloth.

4. The sensor sheet according to claim 1 or 2, wherein The fixing portion has a snap fastener, and the sheet-like fabric is fixed to at least one of the core material and the cover cloth via the snap fastener.

5. The sensor sheet according to any one of claims 1 to 3, wherein The sheet-like fabric has an inner side fabric on which the filamentous sensor is embroidered and an outer side fabric that houses the inner side fabric, The outer side fabric has waterproof properties.

6. The sensor sheet according to any one of claims 1 to 3, wherein The filamentous sensor has a curved portion that is curved in plan view.

7. The sensor sheet according to claim 1 or 2, wherein The sensor sheet further includes another fixing portion different from the fixing portion, The sheet-like fabric has a long axis extending in the long side direction and a short axis extending in the short side direction and intersecting the long axis in plan view, The fixing portion is connected to one end of the sheet-like fabric in the long side direction, The other fixing portion is connected to the other end of the sheet-like fabric in the long side direction, The core material has an upper surface on which the user's body is placed, a lower surface facing the side opposite to the upper surface, and a side surface connecting the upper surface and the lower surface, In a state where the sheet-like fabric is disposed on the upper surface of the core material, the fixing portion and the other fixing portion are fixed to each other on the lower surface of the core material, so that the sheet-like fabric is fixed to the core material.

8. The sensor sheet according to claim 7, wherein The fixing portion has a first fixing member provided on one end side in the long side direction of the fixing portion, The other fixing portion has a second fixing member provided on the other end side in the long side direction of the other fixing portion, The fixing portion and the other fixing portion are fixed to each other via the first fixing member and the second fixing member.

9. The sensor sheet according to claim 8, wherein The fixing part and the other fixing part respectively have supports at the adjacent parts of the sheet-like fabric. The support of the fixing part is provided at the end of the fixing part on the side opposite to the first fixing member. The support of the other fixing part is provided at the end of the other fixing part on the side opposite to the second fixing member. In a state where the sensor sheet is mounted on the core material, the support of the fixing part and the support of the other fixing part face the side surface of the core material.

10. A cushion body, comprising: The sensor sheet according to any one of claims 1 to 3; The core material; and The cover cloth for housing the core material.

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