Vehicle seat

Abstract

To provide a vehicle seat capable of restraining disconnection in a connection part of an operation device and a harness to impression of a repetitive load in a seat pad.SOLUTION: An excess length part 36 is arranged on the vibrator 20R, 20L side in a harness 22, and the excess length part 36 is formed by folding back a cushion pad 14 along elastic deforming and the restoring direction, and a difference in the vertical direction of a connection part 23 of vibrators 20R, 20L and the harness 22 can be absorbed by a change in a folding-back quantity. Thus, the disconnection of the connection part 23 by an impression of the repetitive load generated in the connection part 23 of the vibrators 20R, 20L and the harness 22 can be restrained.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] The vehicle seat (driver's seat) described in the following Patent Document 1 discloses a technology in which a disk-shaped vibrator is disposed between a cushion pad and a seat cover. In this prior art, by disposing the vibrator between the cushion pad and the seat cover, even if the vibrator is small and has a weak vibration force, the vibration of the vibrator can be transmitted to the driver. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-120015 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the vibrator (operating device) is electrically connected to a control unit that operates the vibrator via a harness. Meanwhile, in a vehicle seat, a cushion pad (seat pad) is flexed and deformed when a driver sits on it, and the cushion pad is restored when the driver leaves the seat. That is, a repeated load is applied to the cushion pad, and the vibrator moves along the direction in which the repeated load is input. For this reason, repeated stress acts on the connection between the vibrator and the harness, and there is a concern that the connection of the harness may break.

[0005] In consideration of the above, the present invention provides a vehicle seat that is capable of suppressing disconnection at a connection portion between an actuator and a harness when a repeated load is applied to the seat pad. [Means for solving the problem]

[0006] The vehicle seat according to the invention of claim 1 includes an actuating device provided on a seat pad that elastically supports a seated occupant and that is operable at least when the occupant is seated; a harness provided on the seat pad, electrically connecting the actuating device to a control unit that operates the actuating device, and having an excess portion that allows for movement of the actuating device that moves in conjunction with elastic deformation and restoration of the seat pad; and an arrangement portion provided on the seat pad, through which the harness is arranged and in which a storage portion is formed on the actuating device side to store the excess portion. The extra length portion is formed in an S-shape along a direction in which the seat pad elastically deforms and restores. .

[0007] In the vehicle seat according to the invention of claim 1, an actuating device, a harness, and a wiring section are provided on a seat pad that elastically supports a seated occupant. The actuating device is operable at least when an occupant is seated on the vehicle seat, and the actuating device and a control section that operates the actuating device are electrically connected by a harness. The harness is provided with an excess portion that allows the actuating device to move in accordance with elastic deformation and restoration of the seat pad. Meanwhile, the harness is wired in the wiring section. Here, a storage section is formed on the actuating device side of the wiring section, and the excess portion of the harness is stored in the storage section.

[0008] In a vehicle seat, the seat pad is deflected (elastically deformed) when the driver sits on the seat, and the seat pad is restored (returns to its natural state) when the driver leaves the seat. For example, when the seat pad is applied to a seat cushion, the seat cushion is deflected from its natural state when the driver sits on the seat, and the upper surface of the seat cushion moves downward in the vertical direction of the vehicle. As a result, for example, when an operating device is provided on the upper part of the seat cushion, the position of the operating device moves downward in the vertical direction of the vehicle.

[0009] On the other hand, when the driver leaves the seat, the seat cushion is restored to its original position, whereby the upper surface of the seat cushion moves upward in the vertical direction of the vehicle, and the position of the operating device moves upward in the vertical direction of the vehicle.

[0010] By such movement of the operating device in the vertical direction of the vehicle, the position of the connection part that connects the operating device and the harness moves in the vertical direction of the vehicle.

[0011] In the present invention, the harness is provided with an excess length on the side of the actuator, so that the excess length of the harness can absorb the difference in the vertical direction of the connection with the actuator that moves in the vertical direction of the vehicle as the seat pad elastically deforms and returns to its original position when the driver sits down and leaves the seat. This makes it possible to prevent breakage of the connection between the actuator and the harness due to the application of repeated loads that occur at the connection when the driver sits down and leaves the seat.

[0012] The "seat pad" in the present invention can be applied to a seat back as well as a seat cushion. The "operating device" can be a vibrator (including a vibration device) that vibrates when a dangerous situation of the vehicle is detected, and can also be a speaker, a heater, a blower, or other device. The operating device can be operated when at least an occupant is seated on the vehicle seat, so that the operating device can be operated not only when an occupant is seated on the vehicle seat, but also when no occupant is seated on the vehicle seat.

[0013] Here, in the present invention, the extra length portion is formed in an S-shape along the direction in which the seat pad elastically deforms and restores. .

[0014] Ha The excess length of the wire is It forms an S-shape. Since the seat pad is folded back in the direction of elastic deformation and restoration, the amount of folding back of the excess length portion changes with the elastic deformation and restoration of the seat pad. In other words, the difference in the vertical direction of the connection between the actuator and the harness, which moves in the vertical direction of the vehicle with the elastic deformation and restoration of the seat pad, can be absorbed by the change in the amount of folding back of the excess length portion of the harness.

[0015] For example, when the actuator moves downward due to elastic deformation of the seat pad, the amount of slack in the excess portion of the harness increases, and the amount of fold back in the excess portion increases, whereas when the actuator moves upward due to restoration of the seat pad, the amount of slack in the excess portion of the harness decreases, and the amount of fold back in the excess portion decreases.

[0016] Here, in the present invention, the excess portion of the harness is formed by folding back along the direction in which the seat pad elastically deforms and restores, and the direction in which the excess portion of the harness is folded back is approximately the same as the direction in which the seat pad elastically deforms and restores.

[0017] As a result, in the present invention, compared to a comparative example in which, for example, the direction in which the excess portion of the harness is folded back is formed along a direction perpendicular to the direction in which the seat pad elastically deforms and restores, it becomes possible to smoothly adjust the amount of folding back of the excess portion of the harness that changes in accordance with the elastic deformation and restoration of the seat pad.

[0018] Claim 2 The vehicle seat according to the invention described in claim 1 to In the vehicle seat described in the above, the extra length portion is ,before The seat pad is configured to include a deformation convex portion provided on the operating device side and protruding in the direction in which the seat pad elastically deforms, and a restoration convex portion formed continuously from the deformation convex portion and protruding in the direction in which the seat pad restores.

[0019] Claim 2 In the vehicle seat according to the invention described in ,strange The seat pad is configured to include a deformation convex portion and a restoration convex portion. The deformation convex portion is provided on the actuation device side and protrudes in the direction in which the seat pad elastically deforms. On the other hand, the restoration convex portion is formed continuously with the deformation convex portion and protrudes in the direction in which the seat pad restores its original shape.

[0020] In this way, the excess length ,strangeBy including the shaping convex portion and the restoring convex portion, when the distance between the deforming convex portion and the restoring convex portion is small, the amount of folding back in the excess portion is small, whereas when the distance between the deforming convex portion and the restoring convex portion is large, the amount of folding back in the excess portion is large.

[0021] Claim 3 The vehicle seat according to the invention described in claim 2 In the vehicle seat described in the above, the accommodation portion is provided with a step portion against which the restoring protrusion abuts to limit movement of the seat pad in the restoring direction caused by the restoring protrusion.

[0022] Claim 3 In the vehicle seat of the invention described above, a step portion is provided in the storage portion against which the restoring protrusion abuts, and by abutting the restoring protrusion on the step portion, movement of the seat pad in the restoring direction by the restoring protrusion is restricted.

[0023] When the amount of folding back of the excess portion of the harness is changed, the restoring protrusion of the excess portion abuts against a step provided in the storage section, thereby preventing the excess portion of the harness from slipping out of the storage section.

[0024] Claim 4 The vehicle seat according to the invention described in claims 1 to 5 is 3 In the vehicle seat described in any one of claims 1 to 5, the harness is configured to include a harness main body and an exterior material that exteriorizes the harness main body, and the harness main body is exposed at the excess portion.

[0025] Claim 4 In the vehicle seat according to the invention described above, the harness has an exterior covering material on the outside of the harness main body, thereby protecting the harness main body.

[0026] Generally, the seat pad is made of a foam such as urethane foam, and the exterior material is made of a resin material such as polypropylene, nylon, etc. Therefore, when the exterior material comes into contact with the seat pad, there is a large sliding resistance.

[0027] On the other hand, since it is necessary to change the amount of fold back in the excess length of the harness, there is a possibility that the harnesses may come into contact with each other, but if the exterior materials come into contact with each other, sliding resistance is large. Therefore, in the excess length, the harness main body is exposed, which reduces friction caused by contact between the harnesses and allows the amount of fold back to be changed smoothly. In addition, since the parts of the harness other than the excess length are exteriorized with an exterior material, it is possible to fix the harness in a predetermined position relative to the seat pad by utilizing the sliding resistance between the exterior material and the seat pad.

[0028] Claim 5 The vehicle seat according to the invention described in claims 1 to 5 is 4 In the vehicle seat described in any one of claims 1 to 5, the actuating device is a vibrating body that vibrates when a dangerous situation of the vehicle is detected.

[0029] Claim 5 In the vehicle seat according to the invention described above, the actuating device is a vibrating body that vibrates when a dangerous situation in the vehicle is detected.

[0030] Claim 6 The vehicle seat according to the invention described in claims 1 to 5 is 5 In the vehicle seat described in any one of claims 1 to 5, the seat pad is a cushion pad that supports the buttocks and thighs of a seated occupant.

[0031] Claim 6 In the vehicle seat according to the invention described above, the seat pad is a cushion pad that supports the buttocks and thighs of a seated occupant. Effect of the Invention

[0032] As described above, according to the vehicle seat of claim 1, disconnection at the connection between the operating device and the harness can be suppressed when a repeated load is applied to the seat pad.

[0034] Claim 2According to the vehicle seat described in the above, the amount of folding back of the excess length portion of the harness can be changed by changing the distance between the deforming convex portion and the restoring convex portion in the excess length portion.

[0035] Claim 3 According to the vehicle seat described in the above, when the amount of folding back of the excess length of the harness is changed, the excess length can be prevented from slipping out of the housing portion.

[0036] Claim 4 According to the vehicle seat described in the above, the amount of folding back of the extra length of the harness can be smoothly changed, and the harness can be fixed to the seat pad.

[0037] Claim 5 According to the vehicle seat described in the above, it is possible to prepare for dangerous vehicle situations by vibration of the vibrating body.

[0038] Claim 6 According to the vehicle seat described in the above, even if a load is repeatedly applied to the seat cushion, breakage of the connection between the actuator and the harness can be suppressed. [Brief description of the drawings]

[0039] [Figure 1] 1 is a schematic perspective view showing an outline of a seat cushion that constitutes a part of a vehicle seat according to an embodiment of the present invention. [Diagram 2] 2 is an enlarged plan view of a main portion of a seat cushion that constitutes a part of the vehicle seat according to the present embodiment. FIG. [Diagram 3] 1 is a schematic plan view showing a vibrator and a harness provided in a seat cushion constituting a part of a vehicle seat according to an embodiment of the present invention. [Figure 4] 2 is an enlarged cross-sectional view of a main portion including an extra length portion and a housing portion of a harness provided in a seat cushion constituting a part of a vehicle seat according to the present embodiment; FIG. [Diagram 5]1 is an enlarged cross-sectional view of a main portion including an excess portion and a housing portion of a harness when a seat cushion constituting a part of a vehicle seat according to the present embodiment is flexibly deformed; FIG. [Figure 6] 5 is an enlarged cross-sectional view of a main portion showing a change in the amount of folding back of an excess portion of a harness provided in a seat cushion constituting a part of the vehicle seat according to the present embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] Hereinafter, a vehicle seat 10 according to an embodiment of the present invention will be described with reference to the drawings. Note that the arrow FR shown as appropriate in the following drawings indicates the forward direction in the vehicle longitudinal direction (the direction in which the seated person faces), the arrow UP indicates the upward direction in the vehicle vertical direction, and the arrow RH indicates the rightward direction in the vehicle width direction. Hereinafter, when the directions of front-rear, up-down, and left-right are used in the description, they refer to front-rear in the seat longitudinal direction, up-down in the seat vertical direction, and left-right in the seat width direction when facing the vehicle travel direction, unless otherwise specified.

[0041] (Vehicle seat configuration) First, the configuration of a vehicle seat 10 according to this embodiment will be described.

[0042] As shown in FIG. 1, a vehicle seat 10 includes a seat cushion 12 that supports the buttocks and thighs of a driver who is seated in the vehicle, and a seat back (not shown) that supports the driver's waist and back.

[0043] The seat cushion 12 includes a cushion pad (seat pad) 14 for elastically supporting the driver, a seat cover (not shown) that covers the surface of the cushion pad 14, and a seat cushion pan (not shown) that supports the cushion pad 14 from below.

[0044] The cushion pad 14 is formed of a foam such as urethane foam, and the hardness of the cushion pad 14 is set to a hardness appropriate for ride comfort. The seat cover is formed of, for example, a cloth material, leather, synthetic leather, PVC, or the like, and the seat cushion pan is formed of, for example, a steel plate, an aluminum alloy, or the like.

[0045] The cushion pad 14 includes a pad main body 18A provided in the middle in the seat width direction, a pad side portion 18R provided on the right side in the seat width direction, and a pad side portion 18L provided on the left side in the seat width direction. The left and right pad side portions 18R and 18L are formed to bulge (protrude) upward from the pad main body 18A, and the pad main body 18A supports the driver's buttocks and thighs from below, while the left and right pad side portions 18R and 18L support the driver's buttocks and thighs from the sides.

[0046] Although not described, the seat back (not shown) also includes a back pad as a seat pad made of foam or the like, a seat cover that covers the surface of the back pad, and a seat back frame that supports the back pad, similar to the seat cushion 12. The lower end of the seat back frame is connected to the rear end of the seat cushion frame.

[0047] In the present embodiment, in the vehicle seat 10, for example, in the pad main body 18A of the cushion pad 14, vibrators (operating devices) 20R, 20L are provided on the left and right pad side portions 18R, 18L and on the front side of the pad main body 18A. Each of the vibrators 20R, 20L is, for example, an eccentric motor, and is electrically connected to an ECU (Electronic Control Unit) 24 as a control unit via a harness 22 as shown in FIG. 3. An outside camera 25 is electrically connected to the ECU 24. The outside camera 25 is provided, for example, at the front end of the passenger compartment, and obtains image data of the area in front of the vehicle and transmits it to the ECU 24.

[0048] The ECU 24 is configured to recognize the situation ahead of the vehicle (lanes on a road, etc.) by performing a predetermined process on image data transmitted from the exterior camera 25, for example. For this reason, when the ECU 24 detects a dangerous situation of the vehicle (host vehicle), such as the vehicle deviating from a lane, the ECU 24 outputs an electric signal to the vibrators 20R and 20L to activate (vibrate) the vibrators 20R and 20L.

[0049] In addition, Fig. 3 shows a schematic diagram of the connection relationship between the harness 22 and the ECU 24. In Fig. 3, only the vibrating body 20R side shown in Fig. 1 is shown, but the vibrating body 20R and the vibrating body 20L are substantially the same in function, except for the location of the vibrating body 20R on the cushion pad 14. Therefore, for convenience of explanation, the symbol 20L is also given in Fig. 3.

[0050] 2 and 4 to 6, the vibrating bodies are labeled 20R and 20L in the same manner as in Fig. 3. Here, Fig. 2 is an enlarged plan view of the main part in which the peripheral part of the cushion pad 14 on the vibrating body 20R side is enlarged, and Figs. 4 to 6 are enlarged cross-sectional views of the main part in which the main part including the harness 22 connected to the cushion pad 14 on the vibrating body 20R side is enlarged.

[0051] 1, the harness 22 for connecting the vibrating bodies 20R, 20L to the ECU 24 (see FIG. 3) is routed in the cushion pad 14. For this reason, the cushion pad 14 is formed with an arrangement portion 26 for routing the harness 22.

[0052] More specifically, in the cushion pad 14, substantially cylindrical recesses 28 are provided on the left and right pad side portions 18R, 18L of the pad main body 18A and on the front side of the pad main body 18A, and disc-shaped vibrating bodies 20R, 20L are respectively housed in the recesses 28. One end portion (hereinafter referred to as "connection portion") 23 (see FIG. 2) of a harness 22 is connected to the vibrating bodies 20R, 20L.

[0053] The harness 22 connected to the vibrating bodies 20R, 20L is routed between the cushion pad 14 and a cushion pan (not shown) that supports the cushion pad 14. For this reason, as shown in Fig. 4, a storage portion 30 penetrating from the upper surface 14A to the lower surface 14B of the cushion pad 14 is formed on the inner side in the seat width direction of the recess 28 formed in the cushion pad 14.

[0054] Further, a groove (receiving portion) 32 is formed between the recess 28 and the accommodation portion 30, and the harness 22 is routed in the groove 32. That is, the harness 22 connected to the vibrating bodies 20R, 20L is routed from the upper surface 14A side to the lower surface 14B side of the cushion pad 14 through the groove 32 and the accommodation portion 30. Therefore, in this embodiment, the routed portion 26 is configured to include the groove 32 and the accommodation portion 30.

[0055] Here, the storage section 30 is roughly cylindrical, and a step portion 34 is formed at the upper edge of the storage section 30, protruding outward in the seat width direction from the upper edge of the storage section 30 to the upper surface 14A of the cushion pad 14.

[0056] Meanwhile, the harness 22 is provided with extra length portions 36 on the side of the connection portions 23 with the vibrating bodies 20R, 20L, respectively, and the extra length portions 36 are housed in the housing portion 30. The cushion pad 14 is flexibly deformed in a direction in which it is compressed when the driver sits down, and the cushion pad 14 is restored when the driver leaves the seat. For this reason, the extra length portions 36 of the harness 22 are formed by folding back in a substantially S-shape along the direction in which the cushion pad 14 flexibly deforms and restores its original shape (the up-down direction).

[0057] For example, the excess length portion 36 is configured to include a lower convex portion (deforming convex portion) 36A that protrudes downward (along the deformation direction of the cushion pad 14) where the cushion pad 14 flexes and deforms, and an upper convex portion (restoring convex portion) 36B that protrudes upward (along the restoration direction of the cushion pad 14) where the cushion pad 14 restores.

[0058] The upper protrusion 36B is formed continuously with the lower protrusion 36A, and the lower protrusion 36A and the upper protrusion 36B are arranged along the seat width direction. For this reason, as shown in Fig. 6, the inner diameter dimension (Z) of the storage section 30 is set to about twice the minimum bending diameter (D) of the harness 22. In addition, the projection amount (Y) of the step portion 34 is set to be equal to or larger than the minimum bending radius of the harness 22, and is set to a dimension that ensures a gap for the harness 22 to pass through into the storage section 30.

[0059] 4 and 5, the position of the lower convex portion 36A moves in the vertical direction in accordance with the deformation (elastic deformation and restoration) of the cushion pad 14. Following the movement of the lower convex portion 36A, the upper convex portion 36B also moves in the vertical direction.

[0060] In this embodiment, the lower convex portion 36A and the upper convex portion 36B are arranged along the sheet width direction, but this is not limited thereto as long as the upper convex portion 36B can move along the up-down direction following the movement of the lower convex portion 36A. For example, the lower convex portion 36A and the upper convex portion 36B may be arranged along the sheet front-rear direction, or the lower convex portion 36A and the upper convex portion 36B may be arranged along an oblique direction intersecting with the sheet width direction.

[0061] In addition, in this embodiment, the excess length portion 36 of the harness 22 is formed by folding back in a substantially S-shape along the up-down direction, but this is not limited thereto as long as the amount of folding back of the excess length portion 36 can be changed in accordance with the elastic deformation and restoration of the cushion pad 14. For example, although not shown, the excess length portion 36 of the harness 22 may be formed in a spiral shape having a spiral axis formed along the up-down direction, or may be formed in a substantially U-shape.

[0062] In addition, in the present embodiment, as shown in FIG. 4, when the cushion pad 14 is in its natural state (after restoration), with the amount of folding back in the excess length portion 36 reduced, the upper convex portion 36B is able to abut against the step portion 34 formed from the upper edge of the accommodating portion 30 to the upper surface 14A of the cushion pad 14.

[0063] 3, the harness 22 includes, for example, a wire (harness main body) 22A and an exterior material 22B, such as a so-called corrugated tube, that exteriorizes the wire 22A. The wire 22A is formed long and thin, has flexibility, is elastically deformable, and is protected by the exterior material 22B.

[0064] 4, the wires 22A are exposed at the extra length 36 of the harness 22. The exterior material 22B of the harness 22 is in contact with the upper edge 30A of the accommodation portion 30 of the cushion pad 14 and the lower edge 30B of the accommodation portion 30.

[0065] (Function and Effects of Vehicle Seats) Next, the operation and effects of the vehicle seat 10 according to this embodiment will be described.

[0066] 1, in this embodiment, the cushion pad 14 is provided with the vibrating bodies 20R and 20L, a harness 22, and an arrangement section 26. The vibrating bodies 20R and 20L are activated when an occupant is seated in the vehicle seat 10, and the arrangement section 26 is provided with the harness 22 that electrically connects the vibrating bodies 20R and 20L to an ECU 24 that activates the vibrating bodies 20R and 20L.

[0067] As shown in FIG. 6, the harness 22 is provided with an excess length 36, which is accommodated within the accommodation portion 30 and allows the movement of the vibrating bodies 20R, 20L that move in conjunction with the elastic deformation and restoration of the cushion pad 14.

[0068] More specifically, as shown by the two-dot chain line in Fig. 6, the cushion pad 14 is flexed and deformed when the driver sits on the cushion pad 14, and the upper surface 14A of the cushion pad 14 moves downward. As a result, the positions of the vibrators 20R and 20L provided on the upper surface 14A of the cushion pad 14 move downward. On the other hand, as shown by the solid line in Fig. 6, the cushion pad 14 is restored to its original state when the driver leaves the seat. As a result, the upper surface 14A of the cushion pad 14 moves upward, and the positions of the vibrators 20R and 20L move upward.

[0069] By such movement of the vibrating bodies 20R, 20L in the vertical direction, the position of the connection portion 23 that connects the vibrating bodies 20R, 20L to the harness 22 moves in the vertical direction.

[0070] As described above, in this embodiment, the harness 22 is provided with the extra length 36 on the vibrating bodies 20R, 20L side. Therefore, the extra length 36 of the harness 22 can absorb the difference in the vertical direction of the connection portion 23 with the vibrating bodies 20R, 20L that moves in the vertical direction as the cushion pad 14 elastically deforms and restores when the driver sits down and leaves the seat.

[0071] As a result, in this embodiment, it is possible to prevent breakage of the connection 23 between the vibrating bodies 20R, 20L and the harness 22 due to the repeated application of load generated at the connection 23 when the driver sits down and leaves the seat.

[0072] In the present embodiment, the excess length portion 36 of the harness 22 is formed by folding back along the direction in which the cushion pad 14 elastically deforms and restores. As a result, in the present embodiment, the folding back amount of the excess length portion 36 changes in accordance with the elastic deformation and restoration of the cushion pad 14.

[0073] In other words, the difference in the vertical movement of the connection portion 23 between the vibrating bodies 20R, 20L and the harness 22, which moves in the vertical direction as the cushion pad 14 elastically deforms and restores, can be absorbed by changing the amount of foldback in the excess length portion 36 of the harness 22.

[0074] For example, when the actuator moves downward due to elastic deformation of the cushion pad 14, the amount of slack in the excess length 36 of the harness 22 increases, and the amount of fold back in the excess length 36 increases, as shown in Fig. 5. On the other hand, when the actuator moves upward due to the restoration of the cushion pad 14, the amount of slack in the excess length 36 of the harness 22 decreases, and the amount of fold back in the excess length 36 decreases, as shown in Fig. 4.

[0075] For this reason, in the present embodiment, the excess portion 36 of the harness 22 is formed by folding back along the direction in which the cushion pad 14 elastically deforms and restores, and the direction in which the excess portion 36 of the harness 22 is folded back is substantially the same as the direction in which the cushion pad 14 elastically deforms and restores.

[0076] As a result, in this embodiment, compared to a comparative example (not shown), for example, in which the direction in which the excess portion 36 of the harness 22 is folded back is formed along a direction perpendicular to the direction in which the cushion pad 14 elastically deforms and restores, it is possible to smoothly adjust the amount of folding back of the excess portion 36 of the harness 22 that changes in accordance with the elastic deformation and restoration of the cushion pad 14.

[0077] More specifically, in this embodiment, the excess length 36 of the harness 22 is S-shaped along the direction in which the cushion pad 14 elastically deforms and restores, and is configured to include a lower convex portion 36A and an upper convex portion 36B.

[0078] The lower convex portion 36A is provided on the vibrating bodies 20R and 20L side, and protrudes along the direction in which the cushion pad 14 elastically deforms. On the other hand, the upper convex portion 36B is formed continuously with the lower convex portion 36A, and protrudes along the direction in which the cushion pad 14 restores its original shape, and the lower convex portion 36A and the upper convex portion 36B are disposed along the seat width direction.

[0079] In this way, the excess length portion 36 provided on the harness 22 forms an S-shape along the direction in which the cushion pad 14 elastically deforms and restores, and is configured to include a lower convex portion 36A and an upper convex portion 36B, so that as the cushion pad 14 deforms (elastically deforms and restores), the positions of the lower convex portion 36A and the upper convex portion 36B move in the up-down direction as shown in Figures 4 and 5.

[0080] As shown in Fig. 4, when the distance between the lower convex portion 36A and the upper convex portion 36B is small, the amount of slack in the excess length portion 36 of the harness 22 decreases, and the amount of folding back in the excess length portion 36 decreases. On the other hand, as shown in Fig. 5, when the distance between the lower convex portion 36A and the upper convex portion 36B is large, the amount of slack in the excess length portion 36 of the harness 22 increases, and the amount of folding back in the excess length portion 36 increases.

[0081] As described above, in this embodiment, the difference in the vertical movement of the connection portions 23 with the vibrators 20R, 20L, which moves in the vertical direction as the cushion pad 14 elastically deforms and restores, can be absorbed by changing the amount of foldback in the excess length portion 36 of the harness 22.

[0082] As a result, in this embodiment, it is possible to prevent breakage of the connection 23 caused by application of a repeated load F (see FIG. 5) that occurs at the connection 23 between the vibrating bodies 20R, 20L and the harness 22 when the driver sits down and leaves the seat.

[0083] Meanwhile, the accommodation section 30 is provided with a step portion 34 against which an upper protrusion 36B provided on the excess length portion 36 of the harness 22 abuts. The upper protrusion 36B abuts against the step portion 34, thereby restricting the movement of the cushion pad 14 in the restoring direction by the upper protrusion 36B.

[0084] When the amount of folding of the excess portion 36 of the harness 22 is changed, the upper convex portion 36B of the excess portion 36 abuts against the step portion 34 provided in the storage portion 30, thereby preventing the excess portion 36 of the harness 22 from slipping out of the storage portion 30.

[0085] 3, in the harness 22, the outside of the wire 22A is covered with an exterior material 22B to protect the wire 22A. Here, a foam such as urethane foam is used for the cushion pad 14, and a resin material such as polypropylene or nylon is used for the exterior material 22B.

[0086] For this reason, sliding resistance increases when the exterior material 22B comes into contact with the cushion pad 14. Since it is necessary to change the amount of folding back in the excess length portion 36 of the harness 22, the harnesses 22 may come into contact with each other, but if the exterior materials 22B come into contact with each other, sliding resistance increases. Therefore, in the excess length portion 36, the wire 22A is exposed, which reduces friction caused by contact between the harnesses 22 and allows the amount of folding back to be changed smoothly.

[0087] On the other hand, in the harness 22, the portions other than the excess length portion 36 are covered with the exterior material 22B, and therefore, it is possible to fix the harness 22 at a predetermined position relative to the cushion pad 14 by utilizing the sliding resistance between the exterior material 22B and the cushion pad 14.

[0088] In the present embodiment, the vibrating bodies 20R and 20L are vibrating bodies 20R and 20L, and the vibrating bodies 20R and 20L vibrate when a dangerous situation of the vehicle is detected. In other words, the vibration of the vibrating bodies 20R and 20L allows the vehicle to prepare for a dangerous situation.

[0089] In this manner, in this embodiment, when a dangerous situation of the vehicle is detected, the left and right vibrators 20R and 20L are set to operate, but this is not limited thereto. For example, when the vehicle departs from a lane located on the right side of the vehicle, the ECU 24 may output an electric signal only to the vibrator 20R located on the right side in the seat width direction.

[0090] In addition, in the present embodiment, the vibrators 20R and 20L that vibrate when a dangerous situation of the vehicle is detected are described as the operating device, but the present invention is not limited thereto. For example, a speaker that generates a sound indicating an alarm when a dangerous situation of the vehicle is detected may be used. Furthermore, regardless of the presence or absence of a dangerous situation of the vehicle, the operating device may be a heater, a blower, or other device. In addition, in accordance with the application of these operating devices, the position at which the operating device is provided in the cushion pad 14 may be appropriately changed.

[0091] In addition, in this embodiment, the cushion pad 14 of the seat cushion 12 has been described, but the configuration in this embodiment can be applied to a seat back.

[0092] Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it is of course possible to implement the present invention in various other modified forms without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0093] 10 Vehicle seats 12 Seat cushion (seat pad) 14 Cushion pad (seat pad) 20L Vibrator (actuator) 20R Vibrator (actuator) 22 Harness 22A Wire (Harness body, Harness) 22B Exterior material (harness) 24 ECU (control unit) 26 Distribution Department 30 Storage unit 32 Groove (receiving part) 34 Stepped section 36 Extra length 36A Lower convex part (deformed convex part) 36B Upper convex part (restoration convex part)

Claims

1. an actuating device that is provided on a seat pad that elastically supports a seated occupant and that is operable at least when the occupant is seated; a harness provided on the seat pad, electrically connecting the actuating device to a control unit that actuates the actuating device, and having an extra length that allows the actuating device to move in accordance with elastic deformation and restoration of the seat pad; a wiring section provided on the seat pad, in which the harness is wired, and in which a housing section is formed on the operating device side in which the excess length portion is housed; Equipped with The excess portion is formed in an S-shape along a direction in which the seat pad elastically deforms and restores its shape.

2. The excess portion is a deformation convex portion provided on the actuation device and protruding in a direction in which the seat pad elastically deforms; A restoring protrusion formed continuously with the deformation protrusion and protruding along a restoring direction of the seat pad; The vehicle seat according to claim 1 , further comprising:

3. A vehicle seat as described in claim 2, wherein the accommodating portion is provided with a step portion against which the restoring convex portion abuts to limit movement of the seat pad in the restoring direction by the restoring convex portion.

4. A vehicle seat as described in any one of claims 1 to 3, wherein the harness is composed of a harness main body and an exterior material that exteriors the harness main body, and the excess portion exposes the harness main body.

5. A vehicle seat as described in any one of claims 1 to 4, wherein the operating device is a vibrating body that vibrates when a dangerous situation in the vehicle is detected.

6. A vehicle seat as described in any one of claims 1 to 5, wherein the seat pad is a cushion pad that supports the buttocks and thighs of a seated occupant.

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