WO2019239911A1

WO2019239911A1 - Seat pad

Info

Publication number: WO2019239911A1
Application number: PCT/JP2019/021533
Authority: WO
Inventors: 洋大年; 茂木　学; 五十嵐　哲也
Original assignee: ＴｏｙｏＴｉｒｅ株式会社; 株式会社タチエス
Priority date: 2018-06-12
Filing date: 2019-05-30
Publication date: 2019-12-19
Also published as: JPWO2019239911A1; JP7430635B2

Abstract

[Problem] To provide a seat pad that makes it possible to improve the feeling when sitting. [Solution] The invention is provided with seat occupancy sensors 4 which are in the form of a film affixed to the surface of a patch 3. The patch 3 is provided with cutout sections 30b that are formed at the periphery of the seat occupancy sensors 4 and are configured as through holes extending in the thickness direction of the patch 3. The cutout sections 30b therefore make it easier to deform the patch 3 located at the periphery of the seat occupancy sensors 4. This makes it possible to reduce the reaction force from the patch 3 applied to the edge of the seat occupancy sensors 4 when the load of a seat occupant has been applied to the seat occupancy sensors 4. It is therefore possible to prevent such deformation that the edge of the seat occupancy sensors 4 warps upward (the surface shape of the seat occupancy sensors 4 is easier to maintain). Accordingly, the edge of the seat occupancy sensors 4 can be prevented from making the seat occupant uncomfortable, thus improving the feeling when sitting.

Description

Seat pad

The present invention relates to a seat pad, and more particularly, to a seat pad that can improve a seating feeling.

A technique is known in which a slab pad (applied body) formed softer than the pad body of a seat pad, a film-like seating sensor, a seat heater, or the like (functional component) is attached to the pad body. For example, Patent Document 1 describes a cushion pad (seat pad) in which a slab pad is attached to the surface of a pad body. According to this cushion pad, the slab pad is formed softer than the pad main body, so that the seating feeling can be improved.

Patent Document 2 describes a vehicle seat in which a seating sensor (functional component) made of a membrane switch is attached to the surface of a pad member (pad body). According to this vehicle seat, since the seating sensor can detect that the occupant is seated, for example, based on the detection result, the necessity of the operation of the airbag device or the warning that the seat belt is not worn. It is possible to determine whether or not it is necessary.

JP 2006-020734 A (for example, paragraphs 0003 and 0017, FIG. 3) JP 2014-058291 A (for example, paragraphs 0027 and 0032, FIG. 2)

However, when a functional component is pasted on the surface of the above-described conventional patch, the patch is formed of a softer material than the pad body. Deforms to bite into. Therefore, since the edge of the film-like functional component is easily deformed so as to be warped, the occupant feels uncomfortable with the edge, and there is a problem that the seating feeling is lowered.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a seat pad that can improve a feeling of sitting.

In order to achieve this object, the seat pad of the present invention is a pad body made of a foamed resin, a patch body that is affixed to the surface of the pad body and is made of a softer material than the pad body, A functional part in the form of a film to be attached to the surface of the patch, the patch being formed around the functional component and extending in the thickness direction of the patch. The notch part comprised as follows.

According to the seat pad of claim 1, the film-like functional component is attached to the surface of the patch, and the patch is formed around the functional component and extends in the thickness direction of the patch. Since the notch part comprised as a dent is provided, the sticking body located around the functional component can be easily deformed by the notch part. Thereby, when a seated person's load is added to a functional component, since the reaction force from the sticking body added to the edge of a functional component can be reduced, it can control that the edge of a functional component warps up (function) The surface shape of the parts can be easily maintained). Therefore, it is possible to suppress the edge of the functional equipment from giving a sense of discomfort to the seated person, and thus the seating feeling can be improved.

According to the seat pad of the second aspect, in addition to the effect produced by the seat pad according to the first aspect, since the cut portion is arranged in a manner of surrounding the functional component, the functional component is placed in a region surrounded by the cut portion. By pasting, it is possible to position the functional component pasting position. Therefore, there is an effect that the workability of the functional component pasting work is improved and the function as a ruled line for positioning the functional component can also be used for the cut portion.

According to the seat pad of the third aspect, in addition to the effect produced by the seat pad according to the second aspect, since the cut portion is intermittently formed around the functional component, the cut is made over the entire circumference of the functional component. Compared with the case where a part is formed, the functionality of a patch can be secured. Therefore, even when the cut portion is formed in the patch, there is an effect that a feeling of sitting can be secured.

According to the seat pad according to claim 4, in addition to the effect of the seat pad according to claim 3, the seat pad is provided with wiring connected to the functional component, and the cut portion is formed at a position avoiding the wiring. When the functional component is attached to the body, it is possible to prevent the cut portion from being covered by the wiring connected to the functional component. Thereby, in order to give the notch part the function as the marking for positioning, since it can suppress forming a notch part in the area | region more than necessary, the functionality of a sticking body is securable. Therefore, even when the cut portion is formed in the patch, there is an effect that a feeling of sitting can be secured.

According to the seat pad of the fifth aspect, in addition to the effect produced by the seat pad according to the fourth aspect, since the cut portions are formed in a pair with the wiring interposed therebetween, when the functional component is attached to the patch, The functional component can be easily positioned by passing the wiring between the pair of cut portions. Therefore, there is an effect that the workability of the functional component pasting work is improved.

According to the seat pad of the sixth aspect, in addition to the effect produced by the seat pad according to any one of the third to fifth aspects, the functional component is formed long in one direction, and the cut portion is in the longitudinal direction of the functional component. Since it forms in the edge part side, it can suppress that the longitudinal direction edge part of a functional component warps up and deform | transforms. That is, even when the functional component is formed long in one direction, the longitudinal center of the functional component can be prevented from being bent and deformed, so that the edge on the longitudinal end side of the functional equipment gives a sense of incongruity to the seated person. Can be suppressed. Therefore, there is an effect that the sitting feeling can be improved.

According to the seat pad of the seventh aspect, in addition to the effect produced by the seat pad according to any one of the first to sixth aspects, the cut portion is formed at a position spaced apart from the edge of the functional component by a predetermined distance. When a seated person's load is added to a functional component, the reaction force from a sticking body can be made to act on the whole functional component. Thereby, even when the cut portion is formed in the patch, there is an effect that it is possible to ensure the detection accuracy of the functional component including the pressure sensor.

According to the seat pad of the eighth aspect, in addition to the effect produced by the seat pad according to any one of the first to seventh aspects, the following effect is achieved. The cut portion is formed as a through hole, and the pad main body is configured as a through hole extending in the thickness direction and includes a positioning portion formed at a position communicating with the cut portion. Thus, by providing a protrusion that can be fitted into the cut portion of the patch and the positioning portion of the pad body on the fixing base (which fixes the pad body when the patch is pasted), the positioning portion is fitted to the protrusion. The pad body can be fixed to the fixed base. Moreover, the sticking body can be positioned with respect to the pad main body by fitting the cut portion into the protrusion protruding from the positioning portion. Therefore, there exists an effect that the function as a through-hole for positioning of a sticking body can be combined with a notch part.

It is a top view of the seat pad in a 1st embodiment of the present invention. (A) is a cross-sectional view of the seat pad taken along line IIa-IIa in FIG. 1, and (b) is a partially enlarged cross-sectional view of the seat pad taken along line IIb-IIb in FIG. It is a perspective view of a fixed base, a pad main body, and a sticking body. (A) is a perspective view which shows the state which fixed the pad main body to the fixing stand, (b) is a perspective view which shows the state which affixed the sticking body on the pad main body from the state of (a). (A) is the elements on larger scale of the seat pad in 2nd Embodiment, (b) is the elements on larger scale of the seat pad in 3rd Embodiment. It is a top view of the seat pad in a 4th embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, with reference to FIG.1 and FIG.2, the seat pad 1 in 1st Embodiment is demonstrated. FIG. 1 is a top view of a seat pad 1 in the first embodiment of the present invention. 2A is a sectional view of the seat pad 1 taken along the line IIa-IIa in FIG. 1, and FIG. 2B is a partially enlarged sectional view of the seat pad 1 taken along the line IIb-IIb in FIG.

In addition, in FIG.1 and FIG.2, the seating sensor 4 and the wiring 5 are typically illustrated. In addition, arrows UD, LR, and FB in FIGS. 1 and 2 indicate the vertical direction (thickness direction), the width direction (left-right direction), and the front-rear direction of the seat pad, respectively. The same applies to.

As shown in FIG. 1, the seat pad 1 is a cushion pad that serves as a base material for a seat cushion disposed at the bottom of the seated person's buttocks. On the surface of the seat pad 1, a skin (not shown) such as fabric, synthetic leather, or leather is attached.

The seat pad 1 includes a pad main body 2 constituting the main body portion, a plurality (three in the present embodiment) of sticking bodies 3 attached to the surface of the pad main body 2, and the surfaces of the plurality of sticking bodies 3. Are provided with a plurality of (three in this embodiment) seating sensors 4 and wirings 5 connected to the seating sensors 4.

The pad main body 2 is a base material for a sheet that is integrally formed of a foamed synthetic resin such as a flexible urethane foam. The pad main body 2 includes a front support portion 20 that supports the back side of the thigh of the seated person, a rear support portion 21 that supports the buttocks, and a side support portion 22 that supports the side portions of the thigh and the buttocks.

Grooves 23 and 24 (grooves recessed in the surface of the pad main body 2) for fixing a skin (not shown) at the boundary between the front support part 20, the rear support part 21 and the side support part 22 ) Is formed.

The groove portion 23 extends along the front-rear direction (arrow FB direction) of the seat pad 1 and a pair is disposed at a predetermined interval in the width direction of the seat pad 1 (arrow LR direction). The pair of groove portions 23 are connected by the groove portion 24 in the width direction of the seat pad 1. A through hole 25 extending in the vertical direction (UD direction) is formed in the groove portion 24. The through holes 25 are formed in pairs near the center in the width direction of the pad body 2 with a predetermined interval in the width direction.

Of the parts taken in by the pair of

groove parts

23 and 24, the part located in the front part of the seat pad 1 is the front support part 20, and the part located in the rear part is the rear support part 21. Also, the side support portion 22 is located at the outer side of the seat pad 1 in the width direction.

The front support part 20 and the rear support part 21 form a rectangular region in a top view, and the patch 3 is attached to each of the front support part 20 and the rear support part 21. That is, the surfaces of the front support part 20 and the rear support part 21 are affixed areas of the patch 3, and the affixed areas are partitioned by the

grooves

23 and 24.

The patch 3 is a slab pad having a rectangular parallelepiped shape (flat plate shape) cut out from a block-shaped molded body obtained by continuously foam-molding a foamed synthetic resin such as a flexible urethane foam. The hardness (100N in the present embodiment) of the patch 3 is set lower than the hardness (200N in the present embodiment) of the pad body 2, and the patch 3 is formed to be softer than the pad body 2. In addition, the hardness of the pad main body 2 and the patch 3 is 25% hardness measured in accordance with the D method defined in JIS K6400-2 (2012 edition).

Moreover, in the following description, among the sticking bodies 3, those pasted on the rear support part 21 are the first sticking bodies 30, and those pasted on the front support part 20 in a pair in the width direction are the second and third sticking bodies. It will be described by defining them as 31 and 32, respectively.

The size in the width direction of the first patch 30 is longer than that of the second patch 31 (third patch 32), and the dimension in the front-rear direction is larger than that of the second patch 31 (third patch 32). Formed short. That is, in the top view of the seat pad 1, the outline of the first patch 30 is formed in a shape different from that of the second and third patches 31 and 32 (in the thickness direction of the first to third patches 30 to 32). The dimensions are the same).

The first patch 30 includes a through hole 30a formed on the rear side (arrow B side) from the center in the front-rear direction, and a plurality (four in this embodiment) formed on the front side of the through hole 30a. ) Incision 30b. The through-hole 30a is a through-hole having a rectangular cross section extending vertically, and the cut portion 30b is a through-hole having a rectangular cross section (elongated slit) extending vertically.

The second patch 31 has the same width and longitudinal dimensions as the third patch 32, and the contours of the second patch 31 and the third patch 32 in the top view of the seat pad 1 are the same. The shape is formed. Each of the second and

third patch bodies

31 and 32 is formed with a cut portion 30b configured as a through-hole having a rectangular cross section (elongate slit shape) extending vertically, like the first patch body 30.

The seating sensor 4 is a film-like pressure-sensitive sensor that is thinner than the sticking body 3 and is formed by sandwiching a spacer between films on which circuits and contacts are printed. When the film is pushed by the load of the seated person, a current flows in the circuit by closing the contact, and the presence or absence of the seating is detected by the current. In addition, you may comprise the seating sensor 4 from the film-like pressure-sensitive sensor from which resistance value changes with the pressure at the time of seating.

The seating sensor 4 includes a pair of circular portions 4a that are formed in a circular shape when viewed from the top and that are spaced apart from each other by a predetermined distance, and a connection portion 4b that connects the pair of circular portions 4a in the front and rear directions. In the present embodiment, it is formed long (vertically long) in the front-rear direction. The width dimension of the connecting portion 4b is set smaller than the width dimension (diameter) of the pair of circular portions 4a, and the seating sensor 4 is formed with a constriction in the center portion in the longitudinal direction.

The seating sensor 4 is attached to each of the first to third stickers 30 to 32, and the wiring 5 is connected to each of the three seating sensors 4. The seating sensor 4 is affixed to the first patch 30 at a position slightly deviated to one side (arrow L side) from the center in the direction, and the second and

third patches

31 and 32 have a rear end side. Thus, the seating sensors 4 are respectively attached to the center side in the width direction of the pad main body 2.

The seating sensor 4 attached to the first patch 30 is connected to the wiring 5 extending forward from the through hole 30a, and the seating sensor 4 attached to the second and

third stickers

31 and 32 is a pair of through holes 25. To the wiring 5 extending forward.

Note that a cut portion 30b is formed in each of the first to third stickers 30 to 32. The position (relative position) of the cut portion 30b with respect to the seating sensor 4 (wiring 5) attached to each sticker is as follows. The same applies to each of the first to third patch bodies 30 to 32. Therefore, the functions of the cut portions 30b formed in each of the first to third stickers 3 to 32 with respect to the seating sensor 4 are substantially the same. Therefore, in the following description, the cut portions 30b of the first paste 30 are described. Only will be described.

The cut portion 30 b is arranged in a manner surrounding the seating sensor 4. Since the cut portion 30b is configured as a vertically extending through hole, the first patch 30 positioned around the seating sensor 4 can be easily deformed by the cut portion 30b. Thereby, when a seated person's load is added to the seating sensor 4, the reaction force from the 1st sticking body 30 added to the edge of the seating sensor 4 can be reduced, Therefore It deform | transforms so that the edge of the seating sensor 4 may warp up. This can be suppressed (the surface shape of the seating sensor 4 can be easily maintained). Therefore, since it can suppress that the edge of the seating sensor 4 gives discomfort to a seated person, a seating feeling can be improved.

Further, since the cut portions 30b are intermittently formed around the seating sensor 4 (four in this embodiment), the cut portions 30b are continuously formed over the entire circumference of the seating sensor 4. In comparison with the above, it is possible to suppress an excessive reduction in the reaction force of the first patch 30 when seated. Therefore, even when the cut portion 30b is formed in the first patch 30, the functionality (desired flexibility) of the first patch 30 can be ensured.

Here, since the seating sensor 4 is formed vertically long in the front-rear direction, when a seated person's load is applied to the seating sensor 4, the seating sensor 4 is easily deformed such that the central portion in the longitudinal direction is bent. Furthermore, in the present embodiment, the seating sensor 4 is formed with a constriction in the central portion in the longitudinal direction (the rigidity of the central portion is lower than the end portion in the longitudinal direction). It becomes easy to be deformed to bend in the vicinity. When such deformation occurs, the both ends of the seating sensor 4 are deformed so as to warp, so that the seated person may feel uncomfortable due to the edges of the longitudinal ends (the pair of circular portions 4a) of the seating sensor 4. .

On the other hand, in the present embodiment, the cut portions 30b are provided facing the edges of the pair of circular portions 4a on the longitudinal direction end portion side of the seating sensor 4 (in the four corners of the attachment region of the seating sensor 4). Therefore, it can suppress that the longitudinal direction edge part of the seating sensor 4 warps up and deform | transforms. That is, even when the seating sensor 4 is formed to be long in one direction, it is possible to prevent the center of the seating sensor from being bent and deformed, so that the edges of the seating sensor 4 in the longitudinal direction (a pair of circular portions 4a) Can prevent the seated person from feeling uncomfortable. Therefore, a seating feeling can be improved.

As described above, in order to suppress the warping of the seating sensor 4, the cut portion 30 b may be formed in the first patch 30. On the other hand, if the cut portion 30 b is excessively formed, the functionality of the first patch 30 is achieved. Decreases. On the other hand, in the present embodiment, the cut portion 30b is formed on the longitudinal end portion side of the seating sensor 4 where warping is likely to occur, whereas the warpage is relatively difficult to occur. In the region (facing the edge of the connecting portion 4b), the cut portion 30b is not formed. Thereby, it can be made to make it compatible to suppress that the seating sensor 4 deform | transforms so that it may curve, and to ensure the functionality of the 1st sticking body 30. FIG.

Here, if it is only intended to suppress the warping of the longitudinal end portion of the seating sensor 4, the longitudinal direction end portion (the pair of circular portions 4 a) of the seating sensor 4 is overlapped (up and down). The cut portion 30b may be formed. However, in such a configuration, when a seated person's load is applied to the seating sensor 4, the reaction force from the first patch 30 is not applied to a part of the seating sensor 4. May fall.

On the other hand, in the present embodiment, the notch 30b is formed at a position spaced from the edge of the seating sensor 4 by a predetermined interval (1 to 5 mm in the present embodiment). When applied, the reaction force from the first patch 30 can be applied to the entire seating sensor 4. Thereby, even when the cut part 30b is formed in the 1st sticking body 30, the detection accuracy of the seating sensor 4 comprised from a pressure sensor is securable.

As shown in FIG. 2A, a through hole 26 extending in the thickness direction (arrow UD direction) of the pad main body 2 is formed at a position corresponding to the through hole 30a in the pad main body 2. The through hole 26 communicates with the through hole 30a and is configured as a through hole having a rectangular cross section having the same cross sectional area as the through hole 30a.

2B, a through hole 27 is formed at a position corresponding to the cut portion 30b of the pad main body 2. As shown in FIG. The through hole 27 is a through hole having a circular cross section extending in the thickness direction of the pad main body 2, and communicates with the cut portion 30 b. A plurality of through holes 27 are formed in the pad main body 2 (four in this embodiment) (see FIG. 3), and these four through holes 27 are formed in the second and

third patch bodies

31 and 32. Among the cut portions 30 b, the cut portions 30 b communicate with the four cut portions 30 b located on the outer edge side in the width direction of the pad main body 2.

Next, a method for manufacturing the seat pad 1 will be described with reference to FIGS. FIG. 3 is a perspective view of the fixed base 10, the pad body 2, and the patch 3. 4A is a perspective view showing a state in which the pad body 2 is fixed to the fixing base 10, and FIG. 4B is a view in which the patch 3 is attached to the pad body 2 from the state of FIG. FIG.

In the manufacture of the seat pad 1, a preparation process for preparing the pad main body 2 and the patch 3, a fixing process for fixing the pad main body 2 prepared by the preparation process to the fixing base 10, and the fixing base 10 by the fixing process. The 1st sticking process which sticks patch 3 on the surface of pad body 2 fixed, and the 2nd sticking which sticks seating sensor 4 on the surface of patch 3 stuck on pad body 2 by the 1st sticking process Steps are performed in order.

As shown in FIG. 3, the preparation step is a step of forming the pad main body 2 and the patch 3 with the above-described configuration. As a method for forming the pad main body 2 and the patch 3 (slab pad), a known method can be adopted, and the description thereof is omitted.

The fixing step is a step of fixing the pad main body 2 to the fixing base 10. The fixed base 10 includes a fixed surface 11 formed in a shape along the back surface of the pad main body 2, a frame portion 12 that surrounds the fixed surface 11 and is substantially rectangular when viewed from above (viewed in the direction of arrow D), and the fixed surface 11. And a plurality (five in the present embodiment) of protrusions 13 to 17 extending upward (in the direction of arrow U).

In the present embodiment, the fixed surface 11 (frame portion 12) is formed with a dimension in which a part of the pad main body 2 protrudes from the frame portion 12 in the fixed state to the fixing base 10 (see FIG. 4A). The fixed surface 11 (frame portion 12) may be formed with a dimension that allows the entire pad body 2 to be accommodated.

The protrusion 13 is formed in a rectangular cross-section, and the cross-sectional shape thereof is formed in substantially the same shape as the through-hole 26 and the through-hole 30a (see FIG. 3). The protrusion 13 is formed at a position where it can be fitted into the through hole 26 and the through hole 30a when the pad main body 2 is fixed to the fixing base 10.

The protrusions 14 to 17 are formed in a columnar shape, and the diameter thereof is set to be approximately the same as the diameter of the through hole 27 and the short-side dimension of the cut portion 30b. When the pad main body 2 is fixed to the fixing base 10, the protrusions 14 to 17 are formed at positions where they can be fitted into the through holes 27 and the cut portions 30b. In the present embodiment, the diameters of the protrusions 14 to 17 are set slightly smaller (for example, 3 mm) than the longitudinal dimension of the cut portion 30b, but have a shape (rectangular cross section) corresponding to the shape of the cut portion 30b. The protrusions 14 to 17 may be formed.

As shown in FIG. 4, in the fixing step, the protrusions 13 to 17 of the fixing base 10 are fitted into the through holes 26 and 27 (see FIG. 3) of the pad main body 2, respectively. As a result, the relative displacement of the pad main body 2 with respect to the fixing base 10 is regulated by the protrusions 13 to 17, and the pad main body 2 is fixed to the fixing base 10. In particular, in the present embodiment, since the two or more protrusions 13 to 17 are fitted into the pad main body 2, the pad main body 2 can be restricted from rotating with respect to the fixed base 10.

When the pad main body 2 is fixed to the fixing base 10, the protrusions 13 to 17 are formed so as to protrude from the through holes 26 and 27 (see FIG. 4A). Projections 13 to 17 protrude from the surface of the main body 2.

In the first pasting step, an adhesive is applied to the surface of the pad body 2 or the pasting surface (or both) of the pasting body 3, and the pasting body 3 is pasted to the surface of the pad body 2. At this time, since the protrusions 13 to 17 protrude from the surface of the pad main body 2, the patch 3 can be positioned with respect to the pad main body 2 by fitting the through holes 30a and the cut portions 30b into the protrusions 13 to 17. it can.

That is, with the protrusions 13 to 17 as a reference, both the fixing position of the pad main body 2 with respect to the fixing base 10 and the attachment position of the sticking body 3 with respect to the pad main body 2 can be positioned. The accuracy of the pasting position can be improved.

In this case, since the projection 13 into which the first patch 30 is fitted and the projections 14 to 17 into which the second and

third patches

31 and 32 are fitted are formed in different cross-sectional shapes, It can suppress sticking to the sticking area | region of the 2 and 3 sticking

bodies

31 and 32. FIG.

That is, since the cross-sectional areas of the protrusions 14 to 17 are set smaller than the protrusion 13, the protrusions 14 to 17 can be inserted into the through hole 30 a of the first patch 30. However, even if the operator tries to insert the protrusions 14 to 17 into the through hole 30a of the first sticking body 30, the second sticking is realized by recognizing that the protrusions 14 to 17 have a shape different from that of the through hole 30a. It can suppress that the 1st patch 30 is affixed accidentally to the sticking area | region of the body 31 and the 3rd patch 32. FIG.

On the other hand, since the cross-sectional areas of the protrusions 14 to 17 are set smaller than the protrusion 13, it is impossible to fit the protrusion 13 into the cut portion 30b of the second adhesive body 31 or the third adhesive body 32. Accordingly, it is possible to reliably suppress the second patch 31 and the third patch 32 from being accidentally pasted on the pasting region of the first patch 30.

Further, since the protrusion 13 has a rectangular cross-sectional shape, the rotation of the first patch 30 relative to the pad body 2 can be restricted by the single protrusion 13. Therefore, it is not necessary to form a plurality of through holes in the attachment region of the first patch 30. Thereby, when the pad main body 2 is fixed to the fixing base 10 or when the first sticking body 30 is positioned to the pad main body 2, it is only necessary to fit the through hole 26 or the through hole 30a into one protrusion 13. The workability in the fixing step and the first pasting step can be improved.

In addition, since the two protrusions 14 and 15 (protrusions 16 and 17) are fitted into the second patch 31 (third patch 32), the second patch 31 (third patch 32) with respect to the pad body 2 is used. Can be restricted by the two projections 14 and 15 (projections 16 and 17). Therefore, since it can suppress that the 2nd sticking body 31 (3rd sticking body 32) rotates with respect to the pad main body 2, the sticking position of the 2nd sticking body 31 (3rd sticking body 32) with respect to the pad main body 2 is demonstrated. Accuracy can be improved.

In the state where the first to third adhesive bodies 30 to 32 are attached to the pad body 2, the dimensions of the protrusions 13 to 17 are set so as to protrude from the through hole 30a and the cut portion 30b. Thereby, it is easy to determine whether or not the protrusions 13 to 17 are reliably inserted into the through hole 30a or the cut portion 30b (whether the first to third adhesive bodies 30 to 32 are positioned at desired attachment positions). Can be judged.

In this embodiment, the pressure bonding after the first to third stickers 30 to 32 are attached to the pad main body 2 is performed manually. In this case, the projection 13 is fitted to the rear end side of the first patch 30 and the projections 14 to 17 are fitted to the rear side of the center in the front-rear direction of the second and third patches 31 and 32 (that is, the projections 13 to 17 is fitted on the outer edge side eccentric from the center of the first to third adhesive bodies 30 to 32), so that the projections 13 to 17 interfere with the hands of the operator when the first to third adhesive bodies 30 to 32 are crimped. This can be suppressed. Accordingly, the centers of the first to third adhesive bodies 30 to 32 can be pressed and pressed, and the first to third adhesive bodies 30 to 32 can be easily adhered to the pad main body 2.

Thus, the cut portions 30b of the second and third

adhesive bodies

31 and 32 also have a function as a positioning through-hole when the second and third

adhesive bodies

31 and 32 are attached to the pad main body 2. . Therefore, compared with the case where the positioning through-hole is separately provided in addition to the cut portion 30b, it is possible to suppress the functionality of the second and

third patch bodies

31 and 32 from being lowered, so that the seating feeling can be improved.

Referring back to FIG. 1, the second pasting process will be described. The second sticking step is a step of sticking the seating sensor 4 whose back surface is subjected to adhesive processing to the surfaces of the first to third stickers 30 to 32. As described above, the position (relative position) of the cut portion 30b with respect to the seating sensor 4 (wiring 5) is the same in each of the first to third stickers 30 to 32. Therefore, in the following description, only the case where the seating sensor 4 is affixed to the 1st patch 30 is demonstrated.

Since the cut portion 30b is disposed so as to surround the attachment region of the seating sensor 4, the attachment position of the seating sensor 4 can be easily positioned by attaching the seating sensor 4 in the region. Therefore, the workability of the attaching operation of the seating sensor 4 can be improved, and the function as a positioning rule of the seating sensor 4 can be shared by the cut portion 30b.

Further, when the seating sensor 4 is attached to a region surrounded by the notch 30b, the notch 30b is disposed at a position spaced from the edge of the seating sensor 4 by a predetermined distance (1 to 5 mm in this embodiment). . Thereby, since it becomes unnecessary to affix the seating sensor 4 along the notch part 30b, the workability | operativity of an affixing work can be improved.

In addition, since the cut portion 30b is formed at a position avoiding the wiring 5, the cut portion 30b is covered with the wiring 5 connected to the seating sensor 4 when the seating sensor 4 is attached to the first patch 30. Can be suppressed. Thereby, in order to give the notch part 30b the function as the marking for positioning, it can suppress forming the notch part 30b in an area | region more than necessary, Therefore The functionality of the 1st sticking body 30 is securable. Therefore, even when the cut portion 30b is formed in the first patch 30, a feeling of sitting can be ensured.

Further, the cut portions 30b are formed in a pair with the wiring 5 interposed therebetween, and the cut portions 30b are formed at a predetermined interval (1 to 5 mm in the present embodiment) from the edge of the wiring 5, so that the first patch When the seating sensor 4 is attached to 30, the seating sensor 4 can be easily positioned by passing wiring between the pair of cut portions 30 b. Therefore, the workability of the attaching operation of the seating sensor 4 is improved.

Here, in order to allow the operator to easily specify the region to which the seating sensor 4 is to be attached, the cut portion 30b may be formed in a shape along the edge of the seating sensor 4, for example. That is, for example, in the present embodiment, since the seating sensor 4 includes a pair of circular portions 4a at both ends in the longitudinal direction, the cut portion 30b can be curved along the edge of the circular portion 4a. . However, if the cut portion 30b is formed in a curved shape, the formation cost of the cut portion 30b increases.

On the other hand, in this embodiment, the four cut portions 30b formed at the four corners of the attachment region of the seating sensor 4 are straight lines parallel to the tangential direction of the edges of the opposing circular portions 4a. The seating sensor 4 is formed in a straight line inclined with respect to the longitudinal direction. Thereby, the sticking area | region of the seating sensor 4 can be easily specified by the linear cut | notch part 30b. Therefore, for example, the cut portion 30b can be easily formed as compared with the case where the cut portion 30b is formed in a shape (curved shape or L-shape) along the edge of the seating sensor 4.

Next, the second and third embodiments will be described with reference to FIG. In the first embodiment, the case where the seating sensor 4 includes the circular portion 4a and the connection portion 4b (having a constriction in the central portion in the longitudinal direction) has been described. However, in the second and third embodiments, the seating sensor 204 has a rectangular shape. The case of forming the above will be described. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the description is abbreviate | omitted.

FIG. 5A is a partially enlarged top view of the seat pad 201 in the second embodiment, and FIG. 5B is a partially enlarged top view of the seat pad 301 in the third embodiment. In FIG. 5, the seating sensor 204 and the wiring 5 are schematically illustrated.

As shown in FIG. 5A, the seat pad 201 of the second embodiment includes a seating sensor 204 that is attached to the surface of the first patch 30. The seating sensor 204 is a film-like pressure sensor that is thinner than the patch 3. The seating sensor 204 is formed in a rectangular shape that is long in the front-rear direction when viewed from above, and the wiring 5 is connected to the short side of the rear end portion. In the first patch 30, a plurality of (four in this embodiment) cut portions 230 b are formed so as to surround the four corners of the seating sensor 204.

The notches 230b are formed in an L shape extending in both the longitudinal direction and the short direction of the seating sensor 204, and are separated from the apexes of the four corners of the seating sensor 204 by a predetermined distance (1 to 5 mm in this embodiment). Opposed. Since the cut portion 230b is configured as a slit-like through hole that extends above and below the first patch 30, the first paste 30 positioned around the seating sensor 204 can be easily deformed by the cut portion 230b. .

Thereby, when a seated person's load is added to the seating sensor 204, the reaction force from the 1st sticking body 30 added to the edge of the seating sensor 204 can be reduced, Therefore It deform | transforms so that the edge of the seating sensor 204 may warp up. This can be suppressed. Furthermore, the notch 230b is formed so as to face the apex of the seating sensor 204, which makes it easy for the seated person to feel uncomfortable, so that the apex of the seating sensor 204 can be prevented from feeling uncomfortable.

Further, the cut portion 230b is provided on the longitudinal end side of the seating sensor 204, and the cut portion 230b is not formed in the region facing the long side near the longitudinal center of the seating sensor 204. Thereby, it can be made to make it compatible to suppress that the longitudinal direction edge part of the seating sensor 204 deform | transforms so that the functionality of the 1st patch 30 may be ensured.

Further, since the cut portion 230b is formed at a position spaced from the edge of the seating sensor 204 by a predetermined interval (1 to 5 mm in the present embodiment), the detection accuracy of the seating sensor 204 is secured and the first patch 30 is secured. The workability of the pasting work of the seating sensor 204 can be improved.

In addition, the cut portions 230b are formed in a pair with the wiring 5 interposed therebetween, and the pair of cut portions 230b are formed at a position spaced from the edge of the wiring 5 by a predetermined distance (1 to 5 mm in this embodiment). The seating sensor 204 can be easily positioned by passing the wiring between the pair of cut portions 230b.

Moreover, since the cut portion 230b is formed in an L shape, the cut portion 230b can be disposed along the edge of the rectangular seating sensor 204. That is, since the cut portion 230b is formed in a shape along the edge of the seating sensor 204, the accuracy of the attachment position of the seating sensor 204 with respect to the first patch 30 can be improved. Furthermore, since the cut portion 230b is formed in a shape along the edge of the seating sensor 204, the pasting area of the seating sensor 204 can be easily specified, so that the workability of the pasting work can be improved. it can.

Further, in the cut portion 230b, the length of the portion extending in the long side direction of the seating sensor 204 (dimension in the long side direction) and the length of the portion extending in the short side direction (dimension in the short side direction) are substantially the same. However, the facing distance between the portion extending in the short side direction and the seating sensor 204 is set narrower than the facing distance between the portion extending in the long side direction and the seating sensor 204. Thereby, since the 1st sticking body 30 becomes easy to deform | transform in the area | region which opposes the longitudinal direction edge part of the seating sensor 204, it suppresses more effectively that the longitudinal direction edge part of the seating sensor 204 warps. it can.

As shown in FIG. 5B, the seat pad 301 of the third embodiment includes a seating sensor 204 that is attached to the surface of the first patch 30. Since the seating sensor 204 has the same configuration as that of the second embodiment, the same reference numerals are given and description thereof is omitted.

In the first patch 30, two cut portions 330 b are formed at positions facing the front and rear short sides of the seating sensor 204. The cut portion 330b is formed in a straight line extending in the short side direction of the seating sensor 204, and is disposed to face the short side of the seating sensor 204 with a predetermined interval (1 to 5 mm in this embodiment).

Since the cut portion 330b is configured as a slit-like through-hole extending up and down of the first patch 30, the first paste 30 positioned around the seating sensor 204 can be easily deformed by the cut portion 230b. . Thereby, when a seated person's load is added to the seating sensor 204, the reaction force from the 1st sticking body 30 added to the edge of the seating sensor 204 can be reduced, Therefore It deform | transforms so that the edge of the seating sensor 204 may warp up. This can be suppressed.

In addition, the cut portion 330b is provided opposite to the short side of the seating sensor 204 on the longitudinal direction end portion side of the seating sensor 204, and the cut portion 330b is not formed in the entire region facing the long side of the seating sensor 204. It is supposed to be formed. Thereby, it can be made to make it compatible to suppress that the longitudinal direction edge part of the seating sensor 204 deform | transforms so that the functionality of the 1st patch 30 may be ensured.

Further, since the cut portion 330b is formed at a position spaced from the edge of the seating sensor 204 by a predetermined interval (1 to 5 mm in this embodiment), the detection accuracy of the seating sensor 204 is ensured and the first patch 30 is secured. The workability of the pasting work of the seating sensor 204 can be improved.

Further, the size of the cut portion 330b in the short side direction of the seating sensor 204 is formed to be substantially the same as the short side of the seating sensor 204. Thereby, even when the cut portion 330b is not formed in the entire region facing the long side of the seating sensor 204, the accuracy of the attaching position of the seating sensor 204 in the short side direction can be improved.

In addition, since the cut portion 330b is formed in a straight line shape, the cut portion 330b can be easily formed as compared with the case where the cut portion 330b is formed in a shape (for example, an L shape) along the edge of the seating sensor 204. Can do.

Next, a fourth embodiment will be described with reference to FIG. In the first to third embodiments, the

seating sensors

4 and 204 are illustrated as an example of functional components to be attached to the patch 3, but in the fourth embodiment, a case in which the seat heater 404 is attached to the patch 3 will be described. To do. The same parts as those in the first to third embodiments described above are denoted by the same reference numerals, and the description thereof is omitted.

FIG. 6 is a top view of the seat pad 401 in the fourth embodiment. In FIG. 6, the seat heater 404 and the wiring 5 are schematically illustrated.

As shown in FIG. 6, the seat pad 401 includes a sheet heater 404 that is attached to the surface of each of the first to third stickers 30 to 32. The sheet heater 404 is a film-like (sheet-like) heater thinner than the patch 3, and a known configuration can be adopted, and thus detailed description thereof is omitted.

The seat heater 404 is formed in a rectangular shape that is long in the left-right direction and is attached to the first patch 30, and is formed in a rectangular shape that is long in the front-rear direction and is attached to the second and

third patches

31, 32. A front portion 404b to be pasted and an intermediate portion 404c for connecting the front portion 404b and the rear portion 404a in the front-rear direction are provided.

The dimension of the intermediate part 404c in the left-right direction is set smaller than the dimension in the left-right direction of the rear part 404a and the front part 404b, and the seat heater 404 is formed with a constriction at the center in the front-rear direction. Note that the dimensions of the rear part 404a and the front part 404b in the left-right direction are set substantially the same, and the dimension of the rear part 404a in the front-rear direction is set smaller than that of the front part 404b.

A plurality of (four in this embodiment) cut portions 430b are formed in the first patch 30 so as to surround the four corners of the rear portion 404a, and the front portions 404b are formed in the second and

third patches

31 and 32, respectively. A plurality of cut portions 430b (in this embodiment, two in each of the second and

third patch bodies

31 and 32, a total of four) are formed so as to surround the four corners.

The notches 430b are formed in an L shape extending in both the longitudinal direction and the short direction of the rear portion 404a (front portion 404b), and are spaced apart from the apexes at the four corners of the rear portion 404a (front portion 404b) (in this embodiment). 1 to 5 mm). Since the cut portion 430b is configured as a vertically extending through hole, the first to third stickers 30 to 32 positioned around the rear portion 404a and the front portion 404b can be easily deformed by the cut portion 430b.

As a result, when the seated person's load is applied to the seat heater 404, the reaction force from the first to third stickers 30 to 32 applied to the edge of the seat heater 404 can be reduced, so that the edge of the seat heater 404 is warped. It can suppress that it deform | transforms. Furthermore, the notch 430b is formed so as to face the apex of the seat heater 404 where the seated person is likely to feel uncomfortable, so that the apex of the seat heater 404 can be effectively suppressed from giving the uncomfortable feeling to the seated person.

In addition, the cut portion 430b is provided on the longitudinal end side of the rear portion 404a (front portion 404b), and in the region near the longitudinal center of the rear portion 404a (front portion 404b) (opposite the long side), the cut portion 430b is not formed. As a result, it is possible to achieve both the suppression of deformation of the rear end portion 404a (front portion 404b) in the longitudinal direction and the securing of the functionality of the first to third adhesive bodies 30 to 32. Can do.

Further, since the cut portion 430b is formed at a predetermined distance (1 to 5 mm in the present embodiment) from the edges of the rear portion 404a and the front portion 404b, the seat heater 404 to the first to third stickers 30 to 32 is formed. The workability of the pasting work can be improved.

Further, since the cut portion 430b is formed in an L shape, the cut portion 430b can be disposed along the edge of the rectangular rear portion 404a (front portion 404b). That is, since the cut portion 430b is formed in a shape along the edge of the rear portion 404a (front portion 404b), the accuracy of the attachment position of the sheet heater 404 with respect to the first to third stickers 30 to 32 can be improved. . Furthermore, by forming the cut portion 430b in a shape along the edge of the seat heater 404, the pasting area of the seat heater 404 can be easily specified, so that the workability of the pasting work can be improved. it can.

In addition, the cut portion 430b formed in the second and

third patch bodies

31 and 32 is smaller in the short side direction of the portion facing the short side than the dimension in the long side direction of the portion facing the long side of the front portion 404b. The dimension is set longer. That is, in the region facing the longitudinal end portion of the front portion 404b, the cut amount of the cut portion 430b (the amount of lightening of the second and third patch bodies 31 and 32) is set larger. Thereby, it can suppress more effectively that the longitudinal direction edge part of the front part 404b deform | transforms.

Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment, and various modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

The seat pad may be configured by combining part or all of the seat pad in each of the above embodiments with part or all of the seat pad in the other embodiments. For example, the cut portion 30b of the first embodiment is applied to the

seat pads

201 and 301 of the second and third embodiments, and the

cut portions

230b and 330b of the second and third embodiments are applied to the seat pad 1 of the first embodiment. It is of course possible to apply to.

Moreover, in 2nd Embodiment, the structure by which the opposing space | interval of the seating sensor 204 in the long side direction and the notch part 230b is set narrower than the opposing space | interval of the seating sensor 204 and the notch part 230b in a short side direction. In the fourth embodiment, the configuration in which the thickness of the second and

third patch bodies

31 and 32 is increased toward the end in the longitudinal direction of the front portion 404b of the seat heater 404 has been described. Of course, the invention can be applied to the seat pad of the embodiment. Further, the cross-sectional area of the cut portion may be changed in order to change the amount of lightening of the patch.

In each of the above embodiments, the case where the

seat pads

1, 201, 301, 401 are configured as cushion pads has been described, but the present invention is not necessarily limited thereto. For example, the

seat pads

1, 201, 301, 401 may be configured from back pads. That is, the technical idea of the present invention can be applied as long as it has a configuration for attaching a patch that is more flexible than the pad body.

In each of the above-described embodiments, the

seating sensors

4 and 204 and the seat heater 404 are illustrated as examples of functional components, but are not necessarily limited thereto. For example, a film-like (sheet-like) functional component that is harder than the patch 3 and thinner than the patch 3 (that is, a problem that the patch 3 is likely to be warped by being bitten by the load) may occur. If so, the technical idea of the present invention can be applied.

Further, although the case where the functional components (the

seating sensors

4 and 204 and the seat heater 404) are formed in a rectangular shape or a shape that combines a circular shape and a rectangular shape has been described, it is not necessarily limited thereto. For example, even when the functional component is formed in a square, other polygons, a circle, an ellipse, or a shape combining straight lines and curves, the technical ideas of the above embodiments can be applied.

That is, regardless of the shape of the functional component, if the cut portion is formed continuously or intermittently along the outer edge, the functional component can be prevented from warping and deforming. In addition, regardless of the shape of the functional component, when the functional component has a vertex (a portion that protrudes toward the outer side of the pasting area), the position facing the vertex portion (in the protruding direction) It is preferable to form a notch part in the (opposite position). Thereby, it can suppress that this vertex part gives discomfort to a seated person.

In each of the above embodiments, the case where the patch 3 is a slab pad made of a foamed synthetic resin such as a flexible urethane foam has been described, but the present invention is not necessarily limited thereto. For example, as long as it is softer than the pad main body 2, the material is not limited. Therefore, for example, the patch 3 may be composed of a rubber sponge or the like.

In each of the above embodiments, the case where the hardness of the patch 3 is 100 N and the hardness of the pad body 2 is 200 N has been described, but the present invention is not necessarily limited thereto. For example, the hardness of the patch 3 may be set to 50 N or more and 200 N or less, and the hardness of the pad body 2 may be set to 150 N or more and 350 N or less. That is, if the hardness of the patch 3 is smaller than the hardness of the pad main body 2, it is possible to prevent the edge of the functional equipment from giving a sense of discomfort to the seated person by forming the cut portion around the functional component.

In each of the above-described embodiments, the case where three stickers 3 (first to third stickers 30 to 32) are attached to the pad main body 2 has been described, but the present invention is not necessarily limited thereto. For example, a configuration in which one, two, or four or more sticking bodies 3 are attached to the pad main body 2 may be employed.

Moreover, it is not the structure arranged side by side in the width direction like the 2nd and 3rd sticking

bodies

31 and 32, but a some sticking body is juxtaposed in the front-back direction or the width direction (for example, a 1st patch, 2nd The technical idea of the present invention can also be applied to a configuration in which the patch and the third patch are juxtaposed in the front-rear direction.

In each of the above-described embodiments, the case where the first to third stickers 30 to 32 are formed of the same material (the functions such as cushioning and breathability are the same) has been described. However, the present invention is not necessarily limited thereto. It is not a thing. For example, the first to third stickers may have different materials (functionality).

In each of the above embodiments, the case where the

cut portions

30b, 230b, 330b, and 430b are configured as through holes has been described, but the present invention is not necessarily limited thereto. For example, the cut portion may be formed in a groove shape, a part of the cut portion may be formed in a groove shape, and the other portion may be formed as a through hole. When at least a part of the cut portion is groove-shaped, the cut portion may be formed over the entire periphery of the edge of the functional component (the

seating sensors

4 and 204 and the seat heater 404).

In each of the above embodiments, the case where the

cut portions

30b, 230b, 330b, and 430b are formed in a straight or L-shaped slit shape has been described, but the present invention is not necessarily limited thereto. For example, a configuration in which the cut portion is extended in a curved shape, or a configuration in which the cut portion is extended in combination with a straight line or a curve may be used. That is, by appropriately setting the shape of the cut portion according to the shape of the edge of the functional component, it is possible to suppress the warping of the edge of the functional component.

In each of the above embodiments, the description has been given of the case where the

notches

30b, 230b, 330b, and 430b are disposed at a predetermined interval from the edges of the functional components (the

seating sensors

4, 204 and the seat heater 404). It is not limited. For example, as long as the function of the functional component is not affected, the edge of the functional component and the cut portion may be arranged so as to overlap each other.

In the first embodiment, the case where the cross-sectional shapes of the through hole 30a and the through

holes

26 and 27 are rectangular or circular has been described, but the present invention is not necessarily limited thereto. For example, the cross-sectional shapes of the through hole 30a and the through

holes

26 and 27 may be formed from a polygon other than a rectangle, an ellipse, or a combination of straight lines and curves. That is, the cross-sectional shape is not limited as long as the displacement of the pad main body 2 and the patch 3 can be regulated by the engagement between the protrusion and the through hole.

In the first embodiment described above, the case where one or two protrusions 13 to 17 are inserted through one patch 3 is not necessarily limited to this. For example, a configuration in which three or more protrusions are inserted through one patch 3 may be provided, and a through hole corresponding to the number of protrusions may be provided in the pad main body 2 or the patch 3.

In the first embodiment, the case where the patch 3 is positioned by inserting the protrusions 14 to 17 of the fixed base 10 through the cut portion 30b has been described, but the present invention is not necessarily limited thereto. For example, the patch 3 may be positioned by forming a separate through-hole in the patch 3 and inserting a protrusion through the through-hole. In this case, a protrusion may be provided at a position corresponding to the through hole.

In addition, the positioning of the patch 3 with respect to the pad main body 2 is not performed by inserting the protrusion of the fixing base 10, but the positioning is performed by providing the pad main body 2 and the patch 3 with concavities and convexities that can be fitted to each other. Also good.

In the first embodiment, the case where the patch 3 is manually pasted on the surface of the pad body 2 in the first pasting step has been described, but the present invention is not necessarily limited thereto. For example, you may perform the crimping | compression-bonding of the sticking body 3 with respect to the pad main body 2 with the apparatus provided with the fixing stand 10 (lower mold) and an upper mold | type. In the case of performing pressure bonding with such an apparatus, for example, a pressure bonding surface along the upper surfaces of the pad main body 2 and the sticking body 3 is formed on the upper mold, and the rear end of the frame 12 of the fixing base 10 (the end on the arrow B side). ), The upper die is pivotally supported, and the upper die may be moved up and down by an actuator.

In this case, it is possible to suppress the protrusion from interfering with the upper mold by providing the upper mold with a recess through which the protrusion of the fixing base 10 can be inserted, or by raising and lowering the protrusion in conjunction with the elevation of the upper mold. As a means for raising and lowering the projection, for example, a configuration in which a concave portion into which the projection can be fitted is provided on the fixed surface 11, and the projection is supported by a spring or an actuator inside the concave portion. If the structure is supported by a spring, the protrusion of the upper die contacts the protrusion, and the protrusion shortens toward the inside of the recess (against the biasing force of the spring). In the case of the structure supported by the actuator, it is possible to suppress the protrusions from interfering with the upper mold by extending and contracting the actuator in conjunction with the raising and lowering of the upper mold.

1, 201, 301, 401 Seat pad 2 Pad body 27 Through hole (positioning part)
3 Attached body 30b Cut section 4,204 Seat sensor (functional part)
404 Seat heater (functional parts)
5 Wiring

Claims

In a seat pad comprising a pad body made of a foamed resin, and a patch body made of a material softer than the pad body while being affixed to the surface of the pad body,
A film-like functional component that is attached to the surface of the patch,
The said pad is provided with the notch part comprised as a through-hole or a dent which is formed in the circumference | surroundings of the said functional component and extends in the thickness direction of the said patch.
The seat pad according to claim 1, wherein the cut portion is arranged in a manner of surrounding the functional component.
3. The seat pad according to claim 2, wherein the cut portion is intermittently formed around the functional component.
Comprising wiring connected to the functional component;
The seat pad according to claim 3, wherein the cut portion is formed at a position avoiding the wiring.
The seat pad according to claim 4, wherein the cut portions are formed in a pair with the wiring interposed therebetween.
The functional component is formed long in one direction,
The seat pad according to any one of claims 3 to 5, wherein the cut portion is formed on a longitudinal end side of the functional component.
The functional component is configured as a pressure-sensitive sensor that detects a load of a seated person,
The seat pad according to any one of claims 1 to 6, wherein the cut portion is formed at a position spaced a predetermined distance from an edge of the functional component.
The notch is formed as a through hole,
The sheet according to any one of claims 1 to 7, wherein the pad main body is configured as a through hole extending in a thickness direction of the pad main body and includes a positioning portion formed at a position communicating with the cut portion. pad.