Vehicle seat

Abstract

To provide a vehicle seat that allows a wire harness to pass through a headrest pillar.SOLUTION: A vehicle seat includes a seat back, a headrest provided on an upper portion of the seat back, and a wiring harness 80 extending from the inside of the headrest to the inside of the seat back. The headrest includes a pair of headrest pillars formed of a hollow pipe material, that extends to the seat back. The wire harness 80 includes a first connector 81, a first wire 82A and a second wire 82B extending from the first connector 81, a second connector 83A connected to the first wire 82A, and a third connector 83B connected to the second wire 82B. The first wire 82A is formed to be longer than the second wire 82B, and the first wire 82A and the second wire 82B pass through the inside of either one of the pair of headrest pillars.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat. [Background technology]

[0002] Patent Document 1 discloses a vehicle seat in which a speaker and a microphone are provided in the headrest. In such a vehicle seat, a control device for the headrest and microphone may be provided in the seat cushion or the seat back. In this case, a headrest pillar extending from the headrest to the seat back may be formed by a pipe, and a wire harness connecting the speaker and microphone to the control device may be disposed inside the pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-188137 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the connector (coupler) provided at the end of the wire harness is large, the connector cannot enter the headrest pillar, and the wire harness cannot be passed through the headrest pillar.

[0005] In view of the above background, an object of the present invention is to provide a vehicle seat in which a wire harness can be passed through a headrest pillar. [Means for solving the problem]

[0006] In order to solve the above problem, one aspect of the present invention is a vehicle seat (1) comprising a seat back (12), a headrest (15) provided on an upper portion of the seat back, and a wire harness (80) extending from the inside of the headrest to the inside of the seat back, the headrest having a pair of headrest pillars (70) formed of hollow pipe material extending to the seat back, the wire harness having a first connector (81), a first wiring (82A) and a second wiring (82B) extending from the first connector, a second connector (83A) connected to the first wiring, and a third connector (83B) connected to the second wiring, the first wiring being formed longer than the second wiring, and the first wiring and the second wiring passing through the inside of one of the pair of headrest pillars.

[0007] According to this aspect, the second connector and the third connector are disposed offset from each other in the longitudinal direction of the wire harness. Therefore, the maximum width of the wire harness is smaller than when the second connector and the third connector are integrally formed. As a result, the second connector and the third connector can pass through the headrest pillar, and the wire harness can pass through the headrest pillar. This makes it possible to provide a vehicle seat in which the wire harness can be passed through the headrest pillar.

[0008] In the above aspect, the first wiring and the second wiring may be covered with an exterior member (85A), and the exterior member may have a hole (87A) for exposing the second connector to the outside.

[0009] According to this aspect, the first wiring and the second wiring can be protected by the exterior member while the second connector and the third connector are exposed to the outside.

[0010] In the above aspect, the first wiring and the second wiring may be covered with an exterior member (85A), and the second connector and the third connector may protrude outward from an end of the exterior member.

[0011] According to this aspect, the first wiring and the second wiring can be protected by the exterior member while the second connector and the third connector are exposed to the outside.

[0012] In the above aspect, the first wiring may have a protection member (95A) at a portion corresponding to the third connector.

[0013] According to this aspect, the portion of the first wiring that comes into contact with the third connector can be protected by the protective member.

[0014] In the above aspect, a combined width of the third connector and the first wiring provided with the protection member may be smaller than an inner diameter of the headrest pillar.

[0015] According to this aspect, the third connector and the first wiring provided with the protective member can pass through the inside of the headrest pillar as a single unit.

[0016] In the above aspect, the wire harness may further include a third wiring (82C) and a fourth wiring (82D) extending from the first connector, a fourth connector (83C) connected to the third wiring, and a fifth connector (83D) connected to the fourth wiring, and the third wiring may be formed longer than the fourth wiring, and the third wiring and the fourth wiring may pass through the inside of the other of the pair of headrest pillars.

[0017] According to this aspect, the wire harness extending from the first connector branches into a set of the first wire and the second wire and a set of the third wire and the fourth wire, thereby reducing the width of the wire harness.

[0018] In the above aspect, the number of pins of the first connector may be equal to the total number of pins of the second to fifth connectors.

[0019] According to this aspect, the width of the second to fifth connectors is small, so that they can pass through the inside of the headrest pillar.

[0020] In the above aspect, the second connector and the fourth connector may have the same structure, and the third connector and the fifth connector may have the same structure.

[0021] In the above aspect, an electrical device (72) is connected to the first connector, and pads (73) are placed over the upper ends of the pair of headrest pillars and the electrical device, and a cover material (74) is placed over the pads.

[0022] According to this aspect, a headrest incorporating an electrical device is configured.

[0023] In the above aspect, it is preferable that a seat cushion (11) is provided below the seat back, and the wire harness passes through the inside of the seat back and extends below the seat cushion. [Effects of the Invention]

[0024] One aspect of the present invention is a vehicle seat (1) comprising a seat back (12), a headrest (15) provided on an upper portion of the seat back, and a wire harness (80) extending from inside the headrest to inside the seat back, the headrest having a pair of headrest pillars (70) formed of hollow pipe material extending to the seat back, the wire harness having a first connector (81), a first wiring (82A) and a second wiring (82B) extending from the first connector, a second connector (83A) connected to the first wiring, and a third connector (83B) connected to the second wiring, the first wiring being formed longer than the second wiring, and the first wiring and the second wiring passing through inside one of the pair of headrest pillars.

[0025] According to this aspect, the second connector and the third connector are disposed offset from each other in the longitudinal direction of the wire harness. Therefore, the maximum width of the wire harness is smaller than when the second connector and the third connector are integrally formed. As a result, the second connector and the third connector can pass through the headrest pillar, and the wire harness can pass through the headrest pillar. This makes it possible to provide a vehicle seat in which the wire harness can be passed through the headrest pillar.

[0026] In the above aspect, the first wiring and the second wiring may be covered with an exterior member (85A), and the exterior member may have a hole (87A) for exposing the second connector to the outside.

[0027] According to this aspect, the first wiring and the second wiring can be protected by the exterior member while the second connector and the third connector are exposed to the outside.

[0028] In the above aspect, the first wiring and the second wiring may be covered with an exterior member (85A), and the second connector and the third connector may protrude outward from an end of the exterior member.

[0029] According to this aspect, the first wiring and the second wiring can be protected by the exterior member while the second connector and the third connector are exposed to the outside.

[0030] In the above aspect, the first wiring may have a protection member (95A) at a portion corresponding to the third connector.

[0031] According to this aspect, the portion of the first wiring that comes into contact with the third connector can be protected by the protective member.

[0032] In the above aspect, a combined width of the third connector and the first wiring provided with the protection member may be smaller than an inner diameter of the headrest pillar.

[0033] According to this aspect, the third connector and the first wiring provided with the protective member can pass through the inside of the headrest pillar as a single unit.

[0034] In the above aspect, the wire harness may further include a third wiring (82C) and a fourth wiring (82D) extending from the first connector, a fourth connector (83C) connected to the third wiring, and a fifth connector (83D) connected to the fourth wiring, and the third wiring may be formed longer than the fourth wiring, and the third wiring and the fourth wiring may pass through the inside of the other of the pair of headrest pillars.

[0035] According to this aspect, the wire harness extending from the first connector branches into a set of the first wire and the second wire and a set of the third wire and the fourth wire, thereby reducing the width of the wire harness.

[0036] In the above aspect, the number of pins of the first connector may be equal to the total number of pins of the second to fifth connectors.

[0037] According to this aspect, the width of the second to fifth connectors is small, so that they can pass through the inside of the headrest pillar.

[0038] In the above aspect, the second connector and the fourth connector may have the same structure, and the third connector and the fifth connector may have the same structure.

[0039] In the above aspect, an electrical device (72) is connected to the first connector, and pads (73) are placed over the upper ends of the pair of headrest pillars and the electrical device, and a cover material (74) is placed over the pads.

[0040] According to this aspect, a headrest incorporating an electrical device is configured.

[0041] In the above aspect, it is preferable that a seat cushion (11) is provided below the seat back, and the wire harness passes through the inside of the seat back and extends below the seat cushion. [Brief explanation of the drawings]

[0042] [Figure 1] FIG. 1 is a perspective view of a seat according to an embodiment; [Figure 2] Bottom view of the seat [Figure 3] FIG. 1 is a front view of a seat back according to an embodiment; [Figure 4] An explanatory diagram showing the inside of the headrest [Figure 5] FIG. 1 is an explanatory diagram illustrating an example of a wire harness. [Figure 6] FIG. 1 is an explanatory diagram illustrating an example of a wire harness. [Figure 7] FIG. 10 is an explanatory diagram of an upper portion of a seat back according to another embodiment; [Figure 8] FIG. 10 is an explanatory diagram of an upper portion of a seat back according to another embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0043] Hereinafter, an embodiment in which the vehicle seat of the present invention is applied to a vehicle seat will be described with reference to the drawings. In this embodiment, an example in which the seat is the left seat of an automobile will be described.

[0044] As shown in Figure 1, the seat 1 has slide rails 3 connected to the floor 2 of the vehicle and a seat body 4 supported by the slide rails 3. The slide rails 3 have left and right rails 6 (lower rails) connected to the floor 2, and left and right sliders (upper rails) slidably supported on the left and right rails 6, respectively. Each rail 6 extends in the front-to-rear direction.

[0045] The seat body 4 has a seat cushion 11 that supports the buttocks of the occupant from below, a seat back 12 that supports the back of the occupant from behind, and a headrest 15 provided on the upper part of the seat back 12. The seat back 12 is supported on the rear part of the seat cushion 11 so as to be rotatable.

[0046] The seat body 4 has a seat frame 13 and a flexible pressure-receiving portion 14 that is supported inside the seat frame 13 to support a seated occupant. The seat body 4 also has a pad that is supported by the seat frame 13 and the pressure-receiving portion 14, and a covering material that covers the surface of the pad.

[0047] The seat frame 13 includes a seat cushion frame 13A that constitutes the seat cushion 11 and a seat back frame 13B that constitutes the seat back 12. The pressure receiving portion 14 includes a seat cushion pressure receiving portion 14A that is supported on the inside of the seat cushion frame 13A and a seat back pressure receiving portion 14B that is supported on the inside of the seat back frame 13B.

[0048] The seat cushion frame 13A includes left and right seat cushion side members 21 extending in the front-rear direction, a front member 22 extending left and right and connected to the front ends of the left and right seat cushion side members 21, a rear member 23 extending left and right and connected to the rear ends of the left and right seat cushion side members 21, and a seat cushion intermediate member 24 extending left and right behind the front member 22 and connected to intermediate portions of the left and right seat cushion side members 21. The front member 22 is preferably a pan frame formed in a flat plate shape. The left and right seat cushion side members 21 are connected to corresponding sliders on the left and right.

[0049] The seatback frame 13B has left and right seatback side members 26 that extend vertically, an upper member 27 that extends horizontally and is joined to the upper ends of the left and right seatback side members 26, a lower member 28 that extends horizontally and is joined to the lower ends of the left and right seatback side members 26, and a seatback intermediate member 29 that extends horizontally below the upper member 27 and is joined to intermediate portions of the left and right seatback side members 26. The lower ends of the left and right seatback side members 26 are supported by the rear ends of the corresponding seat cushion side members 21 on the left and right via reclining devices 31.

[0050] The reclining device 31 changes the angle of the left and right seatback side members 26 relative to the left and right seat cushion side members 21. The reclining device 31 is driven by an electric actuator 32. As shown in FIG. 3 , the electric actuator 32 is provided on the inner surface of one of the left and right seatback side members 26. However, the electric actuator 32 may also be provided on the outer surface of the seatback side member 26.

[0051] A back plate 33, which is a resin plate member, is provided behind the seat back frame 13B. The back plate 33 may be joined to the seat back frame 13B, or may be sewn to the cover material of the seat back 12.

[0052] The seat cushion pressure receiving portion 14A is spanned between the seat cushion intermediate member 24 and the rear member 23. The seat cushion pressure receiving portion 14A has a flexible metal wire 35 spanned across the seat cushion frame 13A, and a flexible resin plate 36 supported by the metal wire 35. The metal wire 35 is preferably a wire spring. The metal wire 35 is preferably insert-molded into the plate 36. A front hook 37 that hooks onto the seat cushion intermediate member 24 is provided at the front end of the seat cushion pressure receiving portion 14A. A rear hook 38 that hooks onto the rear member 23 is provided at the rear end of the seat cushion pressure receiving portion 14A.

[0053] The seatback pressure receiving portion 14B is spanned between the seatback intermediate member 29 and the lower member 28. The seatback pressure receiving portion 14B has a flexible metal wire 41 spanned across the seatback frame 13B, and a flexible resin plate 42 supported by the metal wire 41. The metal wire 41 is preferably a wire spring. The metal wire 41 is preferably insert-molded into the plate 42. The seat cushion pressure receiving portion 14A is preferably secured to the seatback intermediate member 29 and the lower member 28 by the metal wire 41.

[0054] The seat body 4 is provided with a control device 45 and a wire harness connected to the control device 45. The control device 45 is an electronic control unit (ECU) including a processor such as a CPU, a non-volatile memory (ROM), and a volatile memory (RAM). The control device 45 executes various applications by executing arithmetic processing in the processor according to programs stored in the non-volatile memory. As shown in FIG. 2, the control device 45 is preferably provided in the seat frame 13. In this embodiment, the control device 45 is coupled to the underside of the front member 22.

[0055] A first wire harness 51 is attached to the seat frame 13. Specifically, the first wire harness 51 is connected to the underside of the front member 22 by a plurality of clips 55. One end of the first wire harness 51 is connected to the control device 45. A first connector 61 is provided at the other end of the first wire harness 51.

[0056] A second wire harness 52 is attached to the seat cushion pressure receiving portion 14A. Specifically, the second wire harness 52 is connected to the underside of the plate 36 of the seat cushion pressure receiving portion 14A by a plurality of clips 55. A second connector 62 is provided at one end of the second wire harness 52. The second connector 62 is electrically and mechanically connectable to the first connector 61. A third connector 63 is provided at the other end of the second wire harness 52.

[0057] The first wire harness 51 and the second wire harness 52 are preferably attached to the seat cushion 11 at positions that avoid the contact surface between the seat cushion pressure receiving portion 14A and the pad. Specifically, the first wire harness 51 and the second wire harness 52 are preferably attached to the underside of the seat cushion pressure receiving portion 14A. Furthermore, portions of the first wire harness 51 and the second wire harness 52 may be fixed to any of the seat cushion frame 13A, the metal wire 35 of the seat cushion pressure receiving portion 14A, or the metal wire 41 and plate 42 of the seat back frame 13B.

[0058] The first connector 61 is preferably attached to the seat frame 13. More specifically, the first connector 61 is preferably attached to the underside of the front member 22. This determines the position of the first connector 61. At this time, the second connector 62 is preferably a free end. The position of the second connector 62 is determined by connecting the second connector 62 to the first connector 61. For example, a locking claw for locking the first connector 61 is preferably provided on the underside of the front member 22.

[0059] In another embodiment, the second connector 62 may be attached to the seat cushion pressure receiving portion 14A. Specifically, the second connector 62 may be coupled to the lower surface of the plate 36 of the seat cushion pressure receiving portion 14A. This determines the position of the second connector 62. In this case, it is preferable that the first connector 61 has a free end. The position of the first connector 61 is determined by connecting the first connector 61 to the second connector 62. For example, it is preferable that a locking claw for locking the second connector 62 is provided on the lower surface of the plate 36 of the seat cushion pressure receiving portion 14A.

[0060] The third wire harness 53 is attached to the seat back pressure receiving portion 14B. A fourth connector 64 is provided at one end of the third wire harness 53. The fourth connector 64 is electrically and mechanically connectable to the third connector 63. The other end of the third wire harness 53 is connected to second to fifth connectors 83A to 83D of a fourth wire harness 80, which will be described later.

[0061] Each of the first to third wire harnesses 51 to 53 may be a single wire harness or a bundle of multiple wire harnesses. In this embodiment, each of the first to third wire harnesses 51 to 53 is a bundle of multiple wire harnesses.

[0062] The third connector 63 may be attached to the seat cushion pressure receiving portion 14A. Specifically, the third connector 63 may be coupled to the underside of the plate 36 of the seat cushion pressure receiving portion 14A. This determines the position of the third connector 63. At this time, the fourth connector 64 may be a free end. The position of the fourth connector 64 is determined by connecting the fourth connector 64 to the third connector 63. For example, a locking claw for locking the third connector 63 may be provided on the underside of the plate 36 of the seat cushion pressure receiving portion 14A.

[0063] In another embodiment, the fourth connector 64 may be attached to the seat back pressure receiving portion 14B. Specifically, the fourth connector 64 may be coupled to the rear surface of the plate 42 of the seat back pressure receiving portion 14B. This determines the position of the fourth connector 64. In this case, the third connector 63 preferably has a free end. The position of the third connector 63 is determined by connecting the third connector 63 to the fourth connector 64. For example, a locking claw for locking the fourth connector 64 may be provided on the rear surface of the plate 42 of the seat back pressure receiving portion 14B.

[0064] 3, the headrest 15 includes left and right headrest pillars 70 that extend vertically, connecting members 71 that extend horizontally and are joined to the upper ends of the left and right headrest pillars 70, an electrical device 72 supported by the connecting members 71, a pad 73, and a cover material 74. The left and right headrest pillars 70 are formed from hollow pipe material and are open at their upper and lower ends.

[0065] As shown in Fig. 4, the electrical device 72 is a headset and includes left and right speakers 72A and left and right microphones 72B. The left and right microphones 72B may be attached to the lower parts of the corresponding left and right speakers 72A. The left and right speakers 72A and the left and right microphones 72B are integrally connected to a base 72C to form a unit. The electrical device 72 may be connected to the upper parts of the left and right headrest pillars 70 or to a connecting member 71.

[0066] The lower portions of the left and right headrest pillars 70 protrude downward from the upholstery material 74. The upper member 27 is provided with left and right pillar support portions 75 that receive the lower portions of the left and right headrest pillars 70 so that they can move up and down. The left and right pillar support portions 75 are cylindrical and penetrate vertically. The lower portion of each headrest pillar 70 penetrates the corresponding pillar support portion 75. The lower portion of each headrest pillar 70 protrudes downward from the corresponding pillar support portion 75. As shown in FIG. 4 , a plurality of locking grooves 76 are formed on the side surface of the headrest pillar 70, and the pillar support portion 75 is provided with a locking claw 77 that can engage with one of the locking grooves 76. The height of the headrest 15 relative to the seat back 12 is determined by the locking claw 77 engaging with one of the locking grooves 76. In other embodiments, the headrest pillar 70 may be connected to the pillar support portion 75 so that it cannot move up and down.

[0067] Resin grommets 107 are attached to the top and bottom ends of the left and right headrest pillars 70 to protect the edges. The grommets 107 are provided with locking claws to prevent them from coming loose and locking projections to prevent them from rotating, and are fixed by fitting into through holes and recesses, respectively, provided in the ends of the headrest pillars 70. In the headrest pillars 70, the through holes and recesses are preferably provided on the same surface, and may be provided on the surface opposite the locking grooves 76 or on the same surface.

[0068] The electrical device 72 is connected to the fourth connector 64 of the third wire harness 53 by a fourth wire harness 80 that extends from inside the headrest 15 to inside the seat back 12. That is, the control device 45 and the electrical device 72 are electrically and mechanically connected by the first to third wire harnesses 51 to 53 and the fourth wire harness 80. The fourth wire harness 80 preferably extends inside the headrest 15, passing through a hanging groove formed in the pad 73.

[0069] The fourth wire harness 80 has a first connector 81, a first wiring 82A, a second wiring 82B, a third wiring 82C, and a fourth wiring 82D extending from the first connector 81, a second connector 83A connected to the first wiring 82A, a third connector 83B connected to the second wiring 82B, a fourth connector 83C connected to the third wiring 82C, and a fifth connector 83D connected to the fourth wiring 82D.

[0070] 5, the first wiring 82A is formed to be longer than the second wiring 82B. As a result, the second connector 83A and the third connector 83B are arranged to be offset from each other in the longitudinal direction of the fourth wire harness 80. The third wiring 82C is formed to be longer than the fourth wiring 82D. As a result, the fourth connector 83C and the fifth connector 83D are arranged to be offset from each other in the longitudinal direction of the fourth wire harness 80.

[0071] The sum of the diameters of the first wiring 82A and the second wiring 82B is preferably smaller than the width of each of the second connector 83A and the third connector 83B. Furthermore, the sum of the diameters of the third wiring 82C and the fourth wiring 82D is preferably smaller than the width of each of the fourth connector 83C and the fifth connector 83D.

[0072] The first wiring 82A and the second wiring 82B are covered with a first exterior member 85A. The third wiring 82C and the fourth wiring 82D are covered with a second exterior member 85B. The first exterior member 85A and the second exterior member 85B are flexible tubular members. The first exterior member 85A and the second exterior member 85B protect the first to fourth wirings 82A to 82D from external forces. The first exterior member 85A and the second exterior member 85B may be made of, for example, resin. The first exterior member 85A and the second exterior member 85B may be made of, for example, corrugated tubes.

[0073] The first exterior member 85A may have a hole 87A that exposes the second connector 83A to the outside. The second exterior member 85B may have a hole 87B that exposes the fourth connector 83C to the outside. In another embodiment, as shown in FIG. 6, the second connector 83A and the third connector 83B may protrude outward from the end of the first exterior member 85A. That is, the first exterior member 85A is formed shorter than the second wiring 82B. The fourth connector 83C and the fifth connector 83D may protrude outward from the end of the second exterior member 85B. That is, the second exterior member 85B is formed shorter than the fourth wiring 82D. Also, as shown in FIG. 6, the first exterior member 85A and the second exterior member 85B may be formed as a single continuous exterior member. In this case, a hole 87C through which the first to fourth wirings 82A to 82D pass may be formed at the boundary between the first exterior member 85A and the second exterior member 85B.

[0074] The fourth wire harness 80 branches from the first connector 81 into a set of first wiring 82A and second wiring 82B and a set of third wiring 82C and fourth wiring 82D. As shown in FIG. 4, the first connector 81 is fixed to the connecting member 71. A branch portion 88 of the fourth wire harness 80 may be formed in a T-shape or a Y-shape. The first connector 81 is fixed to the center of the connecting member 71 in the left-right direction. The branch portion 88 may be disposed between the left end and the right end of the connecting member 71 in the left-right direction.

[0075] The first wiring 82A, the second wiring 82B, and the first exterior member 85A pass through the interior of one of the pair of headrest pillars 70. The third wiring 82C, the fourth wiring 82D, and the second exterior member 85B pass through the interior of the other of the pair of headrest pillars 70. The second to fifth connectors 83A to 83D are disposed inside the seat back 12.

[0076] An electrical equipment connector 90 is connected to the first connector 81, which is connected to four wires extending from the electrical equipment 72. The four wires are connected to left and right speakers 72A and left and right microphones 72B. The number of pins in the first connector 81 is equal to the total number of pins (terminals) in the second to fifth connectors 83A to 83D. For example, the first connector 81 has eight pins, and the second to fifth connectors 83A to 83D each have two pins. The second connector 83A and the fourth connector 83C preferably have the same structure. Furthermore, the third connector 83B and the fifth connector 83D preferably have the same structure.

[0077] The first wiring 82A has a first protective member 95A at a portion corresponding to the third connector 83B. The first protective member 95A may be a tape wrapped around the outer periphery of the first wiring 82A or a flexible tube attached to the outer periphery of the first wiring 82A. The tube may be made of rubber, for example. The first protective member 95A protects the first wiring 82A from external forces. This allows the first protective member 95A to protect the portion of the first wiring 82A that contacts the third connector 83B. The first protective member 95A may be provided over the entire length of the first wiring 82A, or may be provided only on the portion facing the third connector 83B.

[0078] The third wiring 82C has a second protective member 95B in a portion corresponding to the fifth connector 83D. The configuration of the second protective member 95B may be the same as that of the first protective member 95A. This allows the portion of the third wiring 82C that comes into contact with the fifth connector 83D to be protected by the second protective member 95B. The second protective member 95B may be provided over the entire length of the third wiring 82C, or may be provided only in the portion that faces the second connector 83A.

[0079] The combined width of the third connector 83B and the first wiring 82A provided with the first protective member 95A is smaller than the inner diameter of the headrest pillar 70. This allows the third connector 83B and the first wiring 82A provided with the first protective member 95A to pass through the inside of the headrest pillar 70 as a single unit.

[0080] The combined width of the fifth connector 83D and the third wiring 82C provided with the second protective member 95B is smaller than the inner diameter of the headrest pillar 70. This allows the third connector 83B and the third wiring 82C provided with the second protective member 95B to pass through the inside of the headrest pillar 70 as a single unit.

[0081] As shown in Fig. 3, the seat back frame 13B is provided with a bracket 100 for attaching a blower 101. The bracket 100 spans between the upper member 27 and the seat back intermediate member 29. The bracket 100 is also disposed between the left and right headrest pillars 70. The blower 101 is coupled to the front surface of the bracket 100.

[0082] Blower 101 includes blower case 102, a motor housed in blower case 102, and a fan connected to the rotating shaft of the motor. Blower case 102 is generally cylindrical with a surface facing forward and backward. Blower case 102 may be provided with at least one fixing member 103 for attaching a connector.

[0083] The fixing member 103 has a base portion that is connected to the blower case 102 and a fixing portion that protrudes from the base portion. The fixing member 103 is, for example, a resin clip. The base portion may be connected to the blower case 102 by being connected to a through-hole provided in the blower case 102. The fixing portion fixes wiring or a connector. The fixing portion may be, for example, a band or a clamp. The fixing member 103 may also be formed integrally with the blower case 102.

[0084] In this embodiment, the first to fourth wirings 82A to 82D are fixed to the fixing member 103. More specifically, the first to fourth wirings 82A to 82D protrude downward from the lower end of each headrest pillar 70, and after being fixed to the fixing member 103, further extend rearward of the seatback frame 13B. This determines the positions of the first to fourth wirings 82A to 82D. In this case, it is preferable to arrange the first protective member 95A and the second protective member 95B at positions where the fixing portion of the fixing member 103 contacts the first wiring 82A and the third wiring 82C.

[0085] In another embodiment, the second to fifth connectors 83A to 83D may be fixed to the rear surface of the seatback intermediate member 29 of the seatback frame 13B. In this case, as shown in FIG. 7(A), the first to fourth wirings 82A to 82D protrude downward from the lower ends of the headrest pillars 70, form loops 105 facing downward and rearward, and then connect to the second to fifth connectors 83A to 83D, and the second to fifth connectors 83A to 83D are fixed to the bracket 100. The loops 105 are formed between the seatback frame 13B and the back plate 33. This prevents excessive tension from being applied to the first to fourth wirings 82A to 82D due to changes in the shape of the loops 105 even when the headrest pillar 70 moves up and down (see FIG. 7(B)).

[0086] Furthermore, when the seatback intermediate member 29 is disposed below the lower end of the headrest pillar 70, the loop 105 may be formed facing upward and rearward, as shown in Fig. 8(A). This prevents the first to fourth wirings 82A to 82D from moving forward of the seatback intermediate member 29 even when the headrest pillar 70 moves up and down (see Fig. 8(B)).

[0087] Although the description of the specific embodiment has been completed above, the present invention is not limited to the above embodiment and its modifications, and can be modified in a wide range of ways.

[0088] For example, the second to fifth connectors 83A to 83D may be fixed to the rear surface of the metal wire 41 or the plate 42 of the seatback pressure receiving portion 14B supported by the seatback frame 13B. When the second to fifth connectors 83A to 83D are fixed to the metal wire 41, for example, the second to fifth connectors 83A to 83D may be provided with locking claws for locking onto the metal wire 41.

[0089] The left and right headrest pillars 70 and the connecting member 71 may be formed by bending a single hollow pipe. In this case, it is preferable that an insertion hole for passing the fourth wire harness 80 is formed in the upper end portion of the left and right headrest pillars 70 or the connecting member 71.

[0090] The seat body 4 may be provided with other electrical devices such as a vibration device or a sensor. Examples of the other electrical devices include sensors, electric motors, electric fans, electric compressors, and electric heaters. Examples of the sensors include seating sensors, reclining angle sensors, heart rate sensors, and temperature sensors. When other electrical devices are provided in the seat cushion 11 of the seat body 4, the first to third wire harnesses 51 to 53 are preferably attached at positions that avoid the other electrical devices when viewed from the front. Furthermore, the first to third wire harnesses 51 to 53 are preferably attached at positions that avoid the other electrical devices when viewed from above.

[0091] The seat 1 may have a height adjustment mechanism for adjusting the height of the seat cushion 11 relative to the floor 2.

[0092] The vehicle in which the seat 1 is installed may be an automobile such as an internal combustion engine vehicle, an electric vehicle (EV), or a fuel cell vehicle (FCEV), an airplane, a ship, a spacecraft, a drone, etc. The electrical device 72 installed in the headrest 15 may be a sensor, a display, a light, a vibration device, a scent generator, etc. instead of the speaker 72A and the microphone 72B.

[0093] In addition, the specific configuration, arrangement, quantity, material, etc. of each member or part can be changed as appropriate within the scope of the spirit of the present invention. Furthermore, all of the components shown in the above embodiment are not essential and can be selected as appropriate. [Explanation of symbols]

[0094] 1: Sheet 11: Seat cushion 12: Seat back 15: Headrest 70: Headrest pillar 72: Electrical equipment 73: Pad 74:Skin material 80: 4th wire harness 81: First connector 82A: First wiring 82B: Second wiring 82C: Third wiring 82D: 4th wiring 83A: Second connector 83B: Third connector 83C: 4th connector 83D: 5th connector 85A: First exterior member 87A: Hole 95A: First protective member

Claims

1. A vehicle seat, Seat back and a headrest provided on an upper portion of the seat back; a wire harness extending from inside the headrest to inside the seat back, the headrest has a pair of headrest pillars formed by hollow pipe members extending to the seat back; The wire harness includes a first connector, first wiring and second wiring extending from the first connector, a second connector connected to the first wiring, and a third connector connected to the second wiring, The first wiring is formed longer than the second wiring, The vehicle seat, wherein the first wiring and the second wiring pass through the inside of one of the pair of headrest pillars.

2. the first wiring and the second wiring are covered with an exterior member; 2. The vehicle seat according to claim 1, wherein the exterior member has a hole through which the second connector is exposed to the outside.

3. the first wiring and the second wiring are covered with an exterior member; 2. The vehicle seat according to claim 1, wherein the second connector and the third connector protrude outward from an end of the exterior member.

4. 4. The vehicle seat according to claim 2, wherein the first wiring has a protective member at a portion corresponding to the third connector.

5. The vehicle seat according to claim 4 , wherein a combined width of the third connector and the first wiring provided with the protection member is smaller than an inner diameter of the headrest pillar.

6. the wire harness further includes a third wiring and a fourth wiring extending from the first connector, a fourth connector connected to the third wiring, and a fifth connector connected to the fourth wiring; The third wiring is formed longer than the fourth wiring, 5. The vehicle seat according to claim 4, wherein the third wiring and the fourth wiring pass through the inside of the other of the pair of headrest pillars.

7. 7. The vehicle seat according to claim 6, wherein the number of pins of the first connector is equal to the total number of pins of the second to fifth connectors.

8. 7. The vehicle seat according to claim 6, wherein the second connector and the fourth connector have the same structure, and the third connector and the fifth connector have the same structure.

9. an electrical device is connected to the first connector; 2. The vehicle seat according to claim 1, wherein upper ends of the pair of headrest pillars and the electrical device are covered with pads, and the pads are covered with a covering material.

10. A seat cushion is provided below the seat back, 2. The vehicle seat according to claim 1, wherein the wire harness passes through the interior of the seat back and extends below the seat cushion.

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