JP2014008320A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat in which at least a part of a seat cover is composed of a conductive facing material containing conductive fibers, allowing secure connection of a connecting member to the conductive fibers with a simple structure.SOLUTION: On a surface of a margin 45n at an end of a facing material piece formed of a conductive facing material 43 out of a first facing material piece 45 and a second facing material piece 47, both ends of which are stitched up, a connecting member 51 is superposed, so that conductive fibers contained in the conductive facing material 43 and the connecting member 51 are electrically connected to each other. A stitch-up portion of the ends of the first facing material piece 45 and the second facing material piece 47 is suspended in a groove 27 of a seat pad 21, and the margin 45n of the facing material piece electrically connected to the connecting member 51 is held between both side walls 29w of the groove 27 and pressed by elastic force of the seat pad 21.

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat in which at least a part of a seat cover is made of a conductive skin material containing conductive fibers.

  This type of vehicle seat is disclosed in Patent Document 1, for example. As shown in FIG. 12, the seat of Patent Document 1 includes a conductive skin material 103 at the center portion of the seat surface that directly receives the load of the seated person on the seat cover 101 that covers the seat cushion. A copper tape 105 as a connecting member is affixed to the end of the conductive skin material 103, and conductive fibers woven into the conductive skin material 103 are connected to the capacitance detector via the copper tape 105. A sensor is configured to determine whether or not the person sits on the seat cushion from the difference in capacitance of the conductive fibers. The copper tape 105 is arranged at the seam allowance with the other skin material 107 at the end of the conductive skin material 103, and is drawn into the groove 113 of the seat pad 111 by a so-called hanging structure. That is, a wire 109w is held inside a stitched portion between the conductive skin material 103 and another skin material 107 via a strip-shaped cotton cloth 109, and the wire 109w is an insert embedded in the seat pad 111. The wire 113 w is bound by a C ring 115, and a stitched portion (sewing margin) of the seat cover 101 is drawn into the groove 113. Therefore, the end to which the copper tape 105 of the conductive skin material 103 is affixed is housed in the groove 113 of the seat pad 111, and it is difficult for the seated person to feel discomfort due to the copper tape 105. In the conventional suspending structure, the groove 113 is formed with a width sufficient to retract the seat cover 101 in the entire longitudinal direction, and the caulking work of the C ring 115 is easy.

JP 2010-94283 A

  By the way, when placing the connection member over the conductive skin material, such as by sticking copper tape on the surface of the conductive skin material, it is connected to the conductive fibers in the conductive skin material with a relatively simple configuration. It is possible to connect the members. However, for example, when conductive fibers are woven into the skin material, the conductive fibers are arranged in a state where they float and sink with respect to the surface of the skin material. In order to connect the connecting member more reliably, it is desirable that the adhesion between the skin material and the connecting member is as high as possible. However, in the conventional sheet described above, no means has been proposed for further bringing the copper tape and the conductive skin material into close contact.

  Then, this invention makes it a subject to enable a more reliable connection with a simple structure in connecting a connection member to the electroconductive skin material containing an electroconductive fiber.

  The present invention is a vehicle seat comprising a seat pad that forms an outer shape of a seat, and a seat cover that covers the seat pad, wherein at least a part of the seat cover is made of a conductive skin material containing conductive fibers. The seat cover is formed by sewing a plurality of skin material pieces, and at least one of the first skin material piece and the second skin material piece is stitched at the end portion of the conductive skin material. In the end portion of the skin material piece composed of the conductive skin material among the first skin material piece and the second skin material piece, a connecting member is superimposed on the surface of the seam allowance, Conductive fibers contained in the conductive skin material and the connection member are electrically connected, and a stitched portion at an end of the first skin material piece and the second skin material piece is the seat pad. Groove formed in Is incorporated hanging, characterized in that seam allowance of the connecting member electrically connected to the surface material pieces are pressed by being sandwiched between both side walls of the groove elastic force of the seat pad of the seat pad.

  According to such a vehicle seat, the connection member is superimposed on the surface of the skin material piece formed of the conductive skin material, and the conductive fiber and the connection member included in the conductive skin material are electrically connected. . Here, the connecting member is arranged at the seam allowance of the end portion of the skin material piece, and is arranged inside the seat cover. Then, the stitched portion is suspended in a groove portion provided in the seat pad, and a seam allowance where a connecting member for the skin material piece is arranged is sandwiched between both side walls of the groove portion and pressed by the elastic force of the seat pad. Therefore, the adhesion of the connection member to the conductive skin material is high. Therefore, the connection member can be more reliably connected to the conductive skin material with a relatively simple configuration.

  As one embodiment, the seam allowance of the skin material piece electrically connected to the connecting member may be sandwiched and pressed between the side walls of the groove portion by being pushed between the side walls of the groove portion. .

  In addition, a belt-like suspension cloth is sewn on the seat cover along the stitched portions of the end portions of the first skin material piece and the second skin material piece, and the depth direction of the groove portion of the suspension cloth A linear locking tool is held at the tip of the sheet, and a member to be locked is embedded in the seat pad in the depth direction depth of the groove, and the linear locking tool is embedded in the groove. When the bottom part of the groove is pressed in the depth direction of the groove part, the both side walls of the groove part are distorted in a direction approaching each other, and the interval between the both side walls of the groove part is narrowed. In some cases, the stitched portion of the end portion of the first skin material piece and the second skin material piece is suspended in the groove portion.

  ADVANTAGE OF THE INVENTION According to this invention, when connecting a connection member to the electroconductive skin material containing an electroconductive fiber, it can be more reliably connectable by simple structure.

It is a perspective view of a sheet concerning Embodiment 1 of the present invention. It is a top view of the seat cushion shown by FIG. It is a perspective view which expands and shows the stitching | suture location of the 1st skin material piece and 2nd skin material piece of the seat cover which mounts the seat cushion shown by FIG. FIG. 4 is a IV-IV sectional view of the seat cushion shown in FIG. 2. FIG. 4 is a VV cross-sectional view of the seat cushion shown in FIG. 2. It is sectional drawing which shows the cross section of the seat cushion which concerns on Embodiment 2 of this invention corresponding to FIG. It is a top view of the seat cushion which concerns on Embodiment 3 of this invention. FIG. 8 is a view corresponding to the VIII-VIII cross section of the seat cushion shown in FIG. 7 and showing a cross section of the seat pad before the seat cover is locked. FIG. 8 is a VIII-VIII cross-sectional view of the seat cushion shown in FIG. 7, showing a state in which the seat cover is locked to the seat pad. FIG. 10 is a sectional view corresponding to the XX section of the seat cushion shown in FIG. 9 and showing a state before the seat cover is locked to the seat pad. FIG. 10 is a cross-sectional view of the seat cushion shown in FIG. 9 taken along the line XX, showing a state in which the seat cover is locked to the seat pad. It is sectional drawing of a sheet | seat which shows the structure which draws in the seat cover provided in the conventional sheet | seat in the groove part of a seat pad.

[Embodiment 1]
The first embodiment will be described with reference to FIGS. The seat 11 according to the present embodiment includes a seat cushion 13 that constitutes a seating surface 13a, a seatback 15 that constitutes 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. The upper surface of the seat pad 21 mainly forms a substantially flat main top plate portion 23 at the center position for supporting the load of the seated person, and the side support portions 25 and 25 are formed at both side positions, and the seat surface 13a is The shape can be held so as to enclose the seated person. The seat pad 21 is covered with a seat cover 41 along the outer surface thereof.

  The seat cover 41 is formed into a bag shape by sewing a plurality of skin material pieces formed by cutting the skin material. In the present embodiment, as shown in FIG. 2, the portion that covers the seat surface 13 a of the seat cover 41 includes the first skin material piece 45 that covers the main top plate portion 23 and the side support portions 25 and 25. The second skin material pieces 47 and 47 are formed by stitching. The first skin material piece 45 that covers the main top plate portion 23 is obtained by cutting the conductive skin material 43, and the second skin material pieces 47 and 47 that cover the side support portions 25 and 25 are conductive. A skin material that does not have a cut is cut. Further, a bag-like seat cover 41 is formed by stitching with a skin material piece covering the side surface of the seat pad 21.

  The conductive skin material 43 constituting the first skin material piece 45 is a skin material containing conductive fibers 43s. 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 here includes both a material composed of a single surface material exposed on the outer surface of the seat cushion 13 and a composite formed by laminating a thin urethane sheet or the like on the back surface of the surface material. 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.

  As shown in FIGS. 1 and 2, in the present embodiment, a plurality of conductive fibers 43 s are woven into the first skin material piece 45 formed of the conductive skin material 43 along the left-right direction of the sheet 11. The both ends of the conductive fiber 43s reach the left and right ends 45m (see FIG. 3) of the first skin material piece 45 to be sewn to the second skin material pieces 47, 47.

  As shown in FIG. 3, the first skin material piece 45 and the second skin material piece 47 are stitched together by stitching together on the middle surface (sewing line H1), and each skin material piece 45, The ends of 47 are arranged at positions where they are not exposed on the outer surface of the seat cushion 13 inside the seat cover 41 as the seams 45n and 47n. The seam allowance 45n of the first skin material piece 45 made of the conductive skin material 43 is formed wider than the seam allowance 47n of the second skin material piece 47, and is necessary to sew both the skin material pieces 45, 47 together. It is wider than the minimum dimension. That is, the seam allowance 45n of the first skin material piece 45 hangs longer on the inner side of the seat cover 41. Then, the connecting member 51 is superimposed on the seam allowance 45n of the first skin material piece 45 so as to sandwich both surfaces thereof. At the end portion of the first skin material piece 45 on which the connection member 51 is overlaid, the conductive fibers 43s are exposed on at least one of the front and back surfaces. The connection member 51 is a thin belt-like member such as a cloth shape, a sheet shape, a film shape, or a plate shape, and is a member that can be conducted by bringing its surface into contact with the conductive fibers 43s. The connection member 51 of this embodiment is cloth-like, and is made of a woven fabric woven so that conductive fibers are exposed on the surface. As the conductive fiber here, the conductive fiber can be used. The connecting member 51 is folded in half along the longitudinal direction so as to sandwich the end 45m of the first skin material piece 45 from the front and back, and the conductive fibers contained in the tissue are the front and back of the first skin material piece 45. The first skin material piece 45 is sewn to the first skin material piece 45 (sewing line H2).

  The stitched portion of the first skin material piece 45 and the second skin material piece 47 configured as described above is suspended in a groove portion 27 (see FIG. 2) formed on the upper surface of the seat pad 21. Returning to FIG. 3, a hanging cloth 49 is also sewn inside the stitched portion of the first skin material piece 45 and the second skin material piece 47 in relation to the hanging structure. The hanging cloth 49 is formed by folding a belt-like cloth in half, and the overlapped end portion side is stitched together with the first skin material piece 45 and the second skin material piece 47 (sewing line H1). Then, a suspension wire 49w is inserted and held in the trapped tip portion. A plurality of openings 49h are provided at the distal end portion of the suspending cloth 49 which is a tie, with a space in the longitudinal direction, and the suspending wire 49w is exposed.

  As shown in FIG. 2, on the upper surface of the seat pad 21, groove portions 27, 27 extending in the front-rear direction of the seat are formed at the boundary between a portion forming the main top plate portion 23 and a portion forming the side support portions 25, 25. ing. Each groove portion 27 includes a narrow portion 29 and a plurality of wide portions 31 provided at intervals in the longitudinal direction of the narrow portion 29. As shown in FIG. 5 and the like, an insert wire 33 is embedded in the bottom of the groove 27 along the longitudinal direction of the groove 27.

  As shown in FIG. 4, the narrow portion 29 of the groove portion 27 is formed as a narrow gap having a uniform width in the depth direction, and the first skin material piece 45 and the second skin material piece 47 are separated from each other. The seam allowance 45n of the first skin material piece 45, the seam allowance 47n of the second skin material piece 47, and the suspension cloth 49, which are disposed inside the stitched portion, are pushed in. In other words, the narrow portion 29 of the groove portion 27 cannot be inserted unless the width of the first pad material piece 45 is expanded against the elastic force of the seat pad 21 when the seam allowance 45n or the like of the first skin material piece 45 is inserted. It is formed as a narrow gap. Therefore, the portion where the connection member 51 at the end 45m of the first skin material piece 45 is overlapped is sandwiched between the side walls 29w and 29w of the narrow portion 29 and pressed in the thickness direction by the elastic force of the seat pad 21. It is supposed to be in a state.

  On the other hand, as shown in FIG. 5, the wide portion 31 of the groove portion 27 is inserted with a margin for the seam allowance 45n of the first skin material piece 45, the seam allowance 47n of the second skin material piece 47 and the suspension cloth 49. The suspension wire 49w is exposed to the opening 49h of the suspension cloth 49 and the insert wire 33 embedded in the seat pad 21 is bound by a hog ring 35. Thereby, the state where the stitching | suture location of the 1st skin material piece 45 and the 2nd skin material piece 47 was suspended in the groove part 27 is hold | maintained.

  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. Here, when electricity is passed through the conductive fibers 43s, the connection is made by a simple configuration in which the connection member 51 is superimposed on the end of the conductive skin material 43 (first skin material piece 45) including the conductive fibers 43s. The member 51 and the conductive fiber 43s can be made conductive. Then, the end portion of the conductive skin material 43 on which the connection member 51 is superimposed is arranged inside the seat cover 41 as a seam allowance 45n with another skin material piece (second skin material piece 47), and the seat pad 21 is suspended in the groove 27. Therefore, the seated person does not feel discomfort due to the connection member 51. Further, the seam allowance 45n of the conductive skin material 43 (first skin material piece 45) is such that the portion where the connection member 51 is overlapped is formed on the both side walls 29w of the narrow portion 29 by the elastic force of the seat pad 21 in the groove portion 27. , 29w and pressed in the thickness direction. Thereby, since the conductive fiber 43s in the conductive skin material 43 and the conductive fiber in the connecting member 51 are in pressure contact, the electrical connection is reliable.

  In addition, in this embodiment, although the structure which inserts and hold | maintains the suspension wire 49w in the part which became the trap of the suspension cloth 49 was illustrated as a structure which concerns on a suspension structure, it replaces with this structure and is a strip | belt-shaped suspension cloth. A wire may be integrally formed with resin at one end along the longitudinal direction. Further, the configuration for maintaining 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 33 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 in place of the suspension wire 49w, and a locking that can prevent the projection of the linear member in place of the insert wire 33. 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 inner side of the seat cover 41 and the bottom surface of the groove portion 27 of the seat pad 21 may be fastened with a hook-and-loop fastener.

[Embodiment 2]
The second embodiment will be described with reference to FIG. This embodiment is an example of an embodiment in which the shape of the narrow portion 29 of the groove 27 is changed in the first embodiment. In the description of the present embodiment, portions that do not need to be changed from the first embodiment are denoted by the same reference numerals in the drawing, and detailed description thereof is omitted.

  In the present embodiment, the narrow portion 29 of the groove portion 27 formed in the seat pad 21 is formed as a wider loose insertion portion 29a on the depth direction opening side and a narrower pressing portion 29b on the bottom side. Yes. The loose insertion portion 29 a includes a seam allowance 45 n of the first skin material piece 45 arranged on the inner side of the stitched portion between the first skin material piece 45 and the second skin material piece 47, and the second skin material piece 47. The seam allowance 47n and the suspension cloth 49 are formed with a width that can be inserted with a margin. The pressing portion 29b is narrow enough that the portion where the connecting member 51 at the end 45m of the first skin material piece 45 is overlapped cannot be inserted unless it is pushed in, and the first skin is caused by the elastic force of the seat pad 21. The overlapped portion of the connection member 51 at the end 45 m of the material piece 45 can be pressed.

  According to the seat cushion 13 having such a configuration, in addition to the effects of the first embodiment, there is less resistance when the seat cover 41 is pulled into the narrow portion 29 than in the first embodiment.

[Embodiment 3]
The third embodiment will be described with reference to FIGS. In the description of the present embodiment, portions that do not need to be changed from the first embodiment are denoted by the same reference numerals in the drawing, and detailed description thereof is omitted.

  In Embodiment 3, the groove part 61 formed in the boundary of the part which forms the main top-plate part 23 of the upper surface of the seat pad 21 and the part which forms the side support parts 25 and 25 is in the bottom part 63 (refer FIG. 8), A plurality of recesses 67 are provided at intervals in the longitudinal direction. Here, a portion of the bottom 63 where the concave portion 67 is not formed is referred to as a convex portion 65 in order to distinguish it from the concave portion 67. The width of the groove portion 61 is uniform throughout the longitudinal direction, and as shown in FIG. 10, the first skin material piece 45 and the first skin material piece 47 are arranged on the inner side of the stitched portion. The groove width is such that the seam allowance 45n of the outer skin material piece 45, the seam allowance 47n of the second skin material piece 47 and the suspension cloth 49 can be inserted with a margin, and both side walls 61w and 61w bulge in the middle of the depth direction. The groove width is narrow. As shown in FIG. 8, an insert wire 33 is embedded in the seat pad 21 along the longitudinal direction of the groove 61 along the bottom of the recess 67. In other words, the insert wire 33 is disposed at a position that is recessed in the depth direction of the groove portion 61 rather than the convex portion 65 of the groove portion 61.

  When suspending the stitched portion of the first skin material piece 45 and the second skin material piece 47 of the seat cover 41 into the groove portion 61, as shown in FIG. The suspension wire 49w is brought close to the insert wire 33 while pressing and compressing the convex portion 65 of the 63, and the suspension wire 49w and the insert wire 33 are bound by the hog ring 35 in the concave portion 67. Thereby, the state where the stitching | suture location of the 1st skin material piece 45 and the 2nd skin material piece 47 was suspended in the groove part 27 is hold | maintained. Here, as shown in FIG. 11, when the bottom 63 (projection 65) of the groove 61 is pressed in the depth direction of the groove 61, the groove 61 is distorted and the side walls 61 w and 61 w come closer to each other. Thereby, the part where the connection member 51 of the terminal 45m of the 1st skin material piece 45 was piled up is made into the state pressed on the thickness direction between both side walls 61w and 61w. The suspension wire 49w and the insert wire 33 of the present embodiment correspond to the locking tool and the locked member of the present invention, respectively. The form of the locking tool is not limited to a wire, and any linear member having rigidity that can apply pressure to the bottom 63 of the groove 61 of the seat pad 21 to compress the convex 65 can be used. .

  Also with the seat cushion 13 having the above-described configuration, the same operational effects as those of the first embodiment can be obtained. Note that the groove width of the groove portion 61 (interval between the side walls 61w and 61w) must be pushed into the portion where the connection member 51 of the end 45m of the first skin material piece 45 is overlapped before the seat pad 21 is suspended. You may make it the space | interval narrow further by making it so narrow that it does not become, and taking a suspended structure on it. In this case, it is possible to further increase the pressing force applied to the portion where the connection member 51 at the end 45m of the first skin material piece 45 is overlapped by the side walls 61w and 61w.

  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 back 21 Seat pad 27, 27 Groove parts 29w, 29w Side wall 41 Seat cover 43 Conductive skin material 43s Conductive fiber 45 First skin material piece 45n Sewing allowances 47, 47 Second skin Material piece 49w Hanging wire 49 Hanging cloth 51 Connecting member 61 Groove parts 61w, 61w Both side walls 63 Bottom part 65 Convex part 67 Concave part

Claims (3)

A vehicle seat comprising a seat pad that forms the outer shape of the seat, and a seat cover that covers the seat pad, wherein at least a part of the seat cover is made of a conductive skin material containing conductive fibers,
The seat cover is formed by sewing a plurality of skin material pieces, and at least one of the first skin material piece and the second skin material piece, which are composed of the conductive skin material, is stitched at an end portion, Of the first skin material piece and the second skin material piece, an end portion of the skin material piece made of the conductive skin material has a connecting member superimposed on the surface of the seam allowance, and the conductive material The conductive fiber contained in the skin material and the connection member are electrically connected,
The seam allowance of the skin material piece in which the stitched portions of the end portions of the first skin material piece and the second skin material piece are suspended in the groove formed in the seat pad and electrically connected to the connection member Is sandwiched between both side walls of the groove portion of the seat pad and pressed by the elastic force of the seat pad. The vehicle seat according to claim 1,
The seam allowance of the skin material piece electrically connected to the connecting member is pressed between the both side walls of the groove portion so as to be sandwiched and pressed between the both side walls of the groove portion. Sheet. The vehicle seat according to claim 1 or 2,
A belt-like suspension cloth is sewn to the seat cover along the stitched portions of the end portions of the first skin material piece and the second skin material piece, and the depth direction tip of the groove portion of the suspension cloth A linear stopper is held on the
In the seat pad, a locked member is embedded in the depth direction depth of the groove,
When the linear locking tool is locked to the locked member in a state where the bottom of the groove is pressed in the depth direction of the groove, both side walls of the groove are distorted in a direction approaching each other. In the state where the interval between the both side walls of the groove portion is narrowed, the stitched portion of the end portion of the first skin material piece and the second skin material piece is suspended in the groove portion, Vehicle seat.

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