JP2014019319A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress bending of a conductive skin material near the opening of a groove when the end of the conductive skin material is fitted in the groove of a seat pad in a vehicle seat which includes the seat pad shaping a seating surface and a seat cover covering the seat pad and which is characterized in that, on a surface of the seat pad shaping the seating surface, a surface part capable of directly receiving the load of a seating person, and a groove recessed from the surface part are formed, at least a part of the seat cover is made of a conductive skin material including a conductive fiber, the conductive skin material covers the surface part of the seat pad, and its end is fitted in the groove.SOLUTION: A conductive skin material 43 is set along the outer shape of a seat pad 21 from a part covering a surface part 22 to at least a fitting base point S1 in a groove 27.

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat that is at least partially covered with a conductive skin material containing conductive fibers.

  Conventionally, as this type of seat, there is a sensor configured to cover the seating surface center with a conductive skin material containing conductive fibers, and to determine the presence or absence of seating on the sheet from the capacitance of the conductive fibers. is there. In such a sheet, generally, a connection member is connected to the conductive fiber at the end of the conductive skin material, and the conductive fiber is connected to the capacitance detector via the connection member. . For example, in Patent Document 1, as shown in FIG. 4, the seat cover 111 that covers the seat cushion 101 is configured such that the portion that covers the main top plate 103 at the center of the seat surface is formed of a conductive skin material 113. The left and right end portions are stitched with another skin material 115 that covers the top plate support portion 105 (the seam 113s). And the copper tape 117 as a connection member is affixed to the seam allowance 113n, and the conductive fiber woven in the left-right direction and the copper tape 117 are electrically connected to the conductive skin material 113. A hanging cloth 121 is also sewn to a stitched portion between the conductive skin material 113 and another skin material 115, and a wire 121 w is held at the tip thereof. The wire 121 w is formed in a groove 123 formed in the seat pad 122. It is locked to the insert wire 125 embedded in the bottom. As a result, the stitched portion between the conductive skin material 113 and the other skin material 115 is suspended in the groove portion 123, and the seam allowance 113 n of the conductive skin material 113 to which the copper tape (connecting member) 117 is attached is accommodated in the groove portion 123. Has been. Thus, according to the structure in which the connecting member is accommodated in the groove portion of the seat pad, it is difficult for the seated person to feel uncomfortable due to the connecting member.

JP 2010-94283 A

  As in Patent Document 1, when the connection member (copper tape 117) is connected in the groove 123 to the conductive fiber in the conductive skin material 113, the conductive fiber is surely connected inside and outside the groove 123. Must be conductive. However, in the conventional suspension structure, every time an occupant sits on the seat cushion 101, the conductive skin material 113 is easily bent and stretched near the opening of the groove portion 123, and the conductive fibers are disconnected inside and outside the groove portion 123. There was a fear. 4, the conductive skin material 113 is arranged along the surface of the seat pad 122 in the main top plate portion 103, and an end portion of the seat pad 122 is opened at the groove portion 123. It floats from the surface and is suspended at the approximate center of the groove 123. Therefore, as shown by a two-dot chain line in FIG. 4, when the top plate main portion 103 is recessed due to the load of the seated person H, the portion floating from the surface of the seat pad 122 at the end portion is easily loosened and broken. This is because the fiber is easily fatigued.

  Accordingly, an object of the present invention is to suppress the breaking of the conductive skin material in the vicinity of the opening of the groove portion when the end portion of the conductive skin material is suspended in the groove portion of the seat pad.

  The present invention includes a seat pad that forms a seating surface and a seat cover that covers the seat pad, and a surface portion that can directly receive a seated person's load on the surface that forms the seating surface of the seat pad. And a groove portion recessed from the planar portion, and the seat cover is formed of a conductive skin material at least partially including conductive fibers, and the conductive skin material is formed of the seat pad. A vehicle seat that covers a planar portion and whose end is suspended in the groove portion, wherein the conductive skin material is a suspension base point from the portion covering the planar portion to at least the groove portion Up to this point, the seat pad is in a state along the outer shape of the seat pad.

  According to such a vehicle seat, since the conductive skin material does not float from the seat pad even near the opening of the groove portion, it is difficult to break even if seating is repeated. Therefore, the conductive fibers contained in the conductive skin material are not easily fatigued and are not easily disconnected.

  As one embodiment, the conductive skin material has a hanging cloth sewn at the end thereof, and the leading end of the hanging cloth is locked to the bottom of the groove portion, so that the hanging cloth is sewn. The bottom portion of the groove, where the tip of the suspension cloth is locked, is suspended from the surface of the planar portion covered with the conductive skin material. There is one characterized in that it is a position that is shifted closer to the planar portion covered with the conductive skin material than a position at which the side wall of the side wall protrudes most. In this case, it is easy to fit the conductive skin material along the outer shape of the seat pad.

  Further, when the side wall of the groove portion covered with the conductive skin material has an arc shape that swells inward of the groove portion, the conductive skin material is more closely aligned with the outer shape of the seat pad. Easy to put.

  According to the present invention, when the end portion of the conductive skin material is suspended in the groove portion of the seat pad, the breakage of the conductive skin material in the vicinity of the opening of the groove portion can be suppressed.

It is a perspective view of a sheet concerning Embodiment 1 of the present invention. It is II-II sectional drawing of the sheet | seat shown by FIG. It is a figure which shows the cross section of the sheet | seat which concerns on Embodiment 2 of this invention corresponding to FIG. It is sectional drawing of the sheet | seat which shows the structure which suspends the seat cover provided in the conventional sheet | seat in the groove part of a seat pad.

<Embodiment 1>
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat 11 according to the present embodiment includes a seat cushion 13 constituting a seating surface 13a, a seat back 15 constituting a backrest surface 15a, and a headrest 17. The present embodiment is an example of an embodiment in which the present invention is applied to the seat cushion 13. In the present specification, the front, rear, left and right of the seat are shown as directions viewed from the occupant seated in the normal seating posture on the seat.

  The seat cushion 13 is formed with an outer shape of a seating surface 13a by covering a seat frame (not shown) with a seat pad 21. About this structure, a change is not required from the conventional sheet | seat. As shown in FIG. 2, the upper surface of the seat pad 21 that forms the outer shape of the seating surface 13 a includes a planar portion 22 that can directly receive a seated person's load, and a groove portion 27 that is recessed from the planar portion 22. Have The planar portion 22 mainly constitutes a substantially flat main top plate portion 23 at a central position for supporting a seated person's load, and both side portions constitute side support portions 25 and 25 which are raised, and the seat surface 13a is It has a shape that can hold a seated person so as to wrap up. The groove portion 27 is formed to extend in the front-rear direction of the seat cushion 13 at the boundary between the main top plate portion 23 and the side support portions 25, 25. The groove part 27 is formed as a substantially L-shaped cavity as viewed in a cross section perpendicular to the longitudinal direction. The vicinity of the opening of the groove portion 27 is connected to the main top plate portion 23 or the side support portion 25 by forming a gentle curve, the opposing side walls 29 and 31 are gradually narrowed in the depth direction, and the main portion is located at the bottom portion. An intrusion portion 33 extending in the direction of entering the top plate portion 23 is extended. An insert wire 35 is embedded along the longitudinal direction of the groove portion 27 in the inner portion of the intrusion portion 33. The seat pad 21 is covered with a seat cover 41 along the outer surface thereof, and the seat cover 41 is suspended in the groove portion 27. The hanging structure will be described later.

  The seat cover 41 is formed into a bag shape by sewing a plurality of cover pieces (small pieces of skin material) formed by cutting the skin material. As shown in FIG. 1, the portion that covers the seat surface 13 a of the seat cover 41 includes a central cover piece 45 that covers the main top plate portion 23 of the seat pad 21, and side cover pieces that cover the side support portions 25 and 25. 47 and 47 are stitched together. The central cover piece 45 covering the main top plate portion 23 is obtained by cutting the conductive skin material 43, and the side cover pieces 47, 47 covering the side support portions 25, 25 are made of a non-conductive skin material. It has been cut. Further, a cover piece covering the side surface of the seat pad 21 is stitched to form a bag-like seat cover 41, which is put on the seat pad 21.

  The conductive skin material 43 constituting the central cover piece 45 is a skin material containing conductive fibers 43s. In the present embodiment, a woven fabric in which conductive fibers 43 s are woven is used as the conductive skin material 43. The conductive fiber 43s is a conductive fiber. The material and form of the conductive fiber 43s are not limited, and examples thereof include a fiber made of a metal or alloy such as copper or stainless steel, a fiber obtained by plating a metal or alloy on the surface of a core fiber, or a carbon fiber. . These fibers may be used alone or twisted with other fibers. The skin material in the present invention is composed of a single surface material exposed on the outer surface of the seat cushion 13 and a composite in which a thin foamed urethane sheet or the like is laminated on the back surface of the surface material. Includes both. The surface material is made of, for example, a woven fabric, a knitted fabric, a non-woven fabric, leather or synthetic leather. As a form in which the conductive fiber 43s is included in the conductive skin material 43, for example, a conductive fiber 43s is woven, knitted, sewn, or bonded to the surface material.

  The central cover piece 45 is obtained by cutting the conductive skin material 43 so that the conductive fibers 43 s are oriented in the left-right direction of the sheet 11, and is conductive along the left-right direction of the sheet 11 as shown in FIG. 1. A plurality of conductive fibers 43 s are woven, and both ends of the conductive fibers 43 s reach left and right ends that are sewn together with the side cover pieces 47, 47 of the central cover piece 45.

  As shown in FIG. 2, the conductive skin material 43 (center cover piece 45) and the side cover piece 47 are stitched together by stitching together in the middle surface (seam S1), and the respective end portions are The seam allowances 43n and 47n are arranged inside the seat cover 41, that is, at positions not exposed to the outer surface of the seat cushion 13. A connecting member 51 is sewn to the seam allowance 43n of the conductive skin material 43 so as to sandwich the front and back surfaces thereof, and the conductive fibers 43s in the conductive skin material 43 and the connection member 51 are connected. That is, the surface of the conductive fiber 43 s floats and sinks in the fabric structure of the conductive skin material 43. The connection member 51 is also made of a woven fabric so that the conductive fibers are exposed on the surface, and the conductive fiber in the connection member 51 is superposed on the conductive skin material 43 so that the conductive fiber in the conductive skin material 43 is conductive. It can be made to conduct | electrically_connect with the fiber 43s. In addition, as the conductive fiber woven into the connection member 51, the conductive fiber can be used.

  The stitched portion between the conductive skin material 43 and the side cover piece 47 configured as described above is suspended in the groove 27 of the seat pad 21. In relation to the hanging structure, a hanging cloth 49 is also sewn at a stitched portion between the conductive skin material 43 and the side cover piece 47. The hanging cloth 49 is formed by folding a belt-like cloth in half, and the overlapped end side is stitched together with the conductive skin material 43 and the side cover piece 47 (seam S1). A suspension wire 49w is inserted into and held by the trapped tip portion 49t. A plurality of openings 49h are provided at a distal end portion 49t of the suspending cloth 49 at intervals in the longitudinal direction, and the suspending wire 49w is exposed.

  The suspension wire 49w exposed from the opening 49h of the suspension cloth 49 and the insert wire 35 embedded in the seat pad 21 are bound by a hog ring 37. Thereby, the end portions of the conductive skin material 43 and the side cover piece 47 are suspended in the groove portion 27 with the sewn portion (seam S1) of the suspension cloth 49 as a base point. Here, the front end portion 49t of the hanging cloth 49 is shifted to the main top plate portion 23 side from the most protruding portion 29a of the side wall 29 on the main top plate portion 23 side. Thereby, the conductive skin material 43 covering the main top plate portion 23 is in a state along the outer shape of the seat pad 21 along the opening edge of the groove portion 27 and at least until the seam S1 which is the base point of suspension. Has been.

  According to the seat cushion 13 having the above configuration, the conductive fibers 43s are arranged on the main top plate portion 23 mainly contacted by the seated person, and the conductive fibers 43s are, for example, electrodes of a capacitive sensor, It can be used as a heater. And since the edge part of the conductive skin material 43 which coat | covers the main top-plate part 23 is in the state along the opening edge of the groove part 27, a seated person's load acts on the main top-plate part 23 repeatedly. It is hard to break. Therefore, the conductive fibers 43s are not easily fatigued and are not easily disconnected.

<Embodiment 2>
Hereinafter, another embodiment of the present invention will be described with reference to FIG. In the description of the present embodiment, portions that are not changed from the first embodiment are denoted by the same reference numerals in the drawing, and detailed description thereof is omitted.

  In the second embodiment, the shape of the groove portion 27 is different from that of the first embodiment, and the side wall 30 on the main top plate portion 23 side on which the conductive skin material 43 is disposed has an arc shape that swells inward of the groove portion 27. ing. And the front-end | tip part 49t of the hanging cloth 49 is latched by the main top-plate part 23 side rather than the part (vertex) 30a which swelled inward most of this circular arc-shaped groove part 27a.

  As described above, when the side wall 30 has an arc shape, the conductive skin material 43 can be easily fitted along the outer shape of the seat pad 21. Therefore, the conductive skin material 43 is less likely to be broken, and the conductive fibers 43 s are less likely to be fatigued, so that it is difficult to disconnect.

<Other embodiments>
In the above embodiment, as a configuration related to the suspension structure, a configuration in which the suspension wire 49w is inserted and held in the part of the suspension cloth 49 that is trapped is illustrated. However, instead of this configuration, a belt-shaped suspension cloth is used. Alternatively, the wire may be integrally formed with resin. Further, the configuration for holding the state in which the seat cover 41 is suspended from the seat pad 21 is not limited to the method of binding the suspension wire 49w on the seat cover 41 side and the insert wire 35 on the seat pad 21 side. Absent. For example, a linear member provided with a plurality of locking projections at intervals in the longitudinal direction instead of the suspension wire 49w, and a locking that can prevent the projection of the linear member from replacing the insert wire 35 A member having a hole is embedded in the seat pad 21, and the locking projection of the linear member on the seat cover 41 side is inserted into the locking hole on the seat pad 21 side to prevent the suspension, thereby maintaining the suspended state. be able to. Further, for example, the hanging cloth 49 and the seat pad 21 may be fastened with a hook-and-loop fastener.

  The present invention can be applied not only to the seat cushion 13 but also to the seat back 15.

DESCRIPTION OF SYMBOLS 11 Seat 13 Seat cushion 13a Seat surface 21 Seat pad 22 Planar part 23 Main top plate part 25, 25 Side support part 27 Groove part 29 Side wall 30 Side wall 33 Intrusion part 35 Insert wire 41 Seat cover 43 Conductive skin material 43n Sewing allowance 43s Conductivity Fiber 45 Central cover piece 47, 47 Side cover piece 49w Wire 49 Hanging cloth 51 Connection member

Claims (3)

A seat pad that forms a seating surface and a seat cover that covers the seat pad, and a surface that forms the seating surface of the seat pad includes a planar portion that can directly receive a seated person's load, and the surface A groove portion that is recessed from the shape portion, and the seat cover is formed of a conductive skin material at least partly containing conductive fibers, and the conductive skin material is formed of the planar portion of the seat pad. A vehicle seat that is covered and whose end is suspended in the groove,
The vehicle seat according to claim 1, wherein the conductive skin material is in a state along an outer shape of the seat pad from a portion covering the planar portion to at least a suspension base point to the groove portion. The vehicle seat according to claim 1,
The conductive skin material has a hanging cloth sewn at its end, and the tip of the hanging cloth is locked to the bottom of the groove, so that the sewn part of the hanging cloth is used as a suspension base point. The position in the width direction of the bottom portion that is suspended in the groove portion, and the tip of the hanging cloth in the groove portion is locked, protrudes most on the side wall on the side of the planar portion covered with the conductive skin material. A vehicle seat, wherein the vehicle seat is located at a position shifted from the position closer to the planar portion covered with the conductive skin material. The vehicle seat according to claim 1 or 2, wherein
The vehicle seat according to claim 1, wherein a side wall of the groove portion covered with the conductive skin material has an arc shape that swells inward of the groove portion.

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