JP2019038291A - Vehicle seat - Google Patents

Abstract

To hold a wire harness at the rear surface side of a seat pad with a relatively simple structure.SOLUTION: At least a part of a wire harness 10 is inserted into a groove part 20 provided on a rear surface of a seat pad 4P. The groove part 20 is provided with a pair of interference portions (31, 32) which interferes with the wire harness 10 in the groove part 20 from a surface direction of the rear surface of the seat pad 4P to restrict movement of th wire harness 10 relative to the groove part 20 in a falling direction. A first interference portion 31 and a second interference portion 32 which make the pair are provided separating from each other in a direction in which the groove part 20 extends.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat including a seat pad that has a seat outer shape and can elastically support an occupant, and a wire harness that is routed on the back side of the seat pad.

  Various electric parts are mounted on a general vehicle seat, and a wire harness for supplying electric power to the electric parts is routed on the back side of the seat. A clamp or the like is attached to an appropriate position of the wire harness, and the wire harness is held on the back side of the seat via the clamp or the like. By holding the wire harness with a clamp or the like so as not to move to the back side of the seat in this way, it is possible to prevent the wire harness from fluttering and coming into contact with other members and generating abnormal noise. .

  For example, in the vehicle seat disclosed in Patent Document 1, a seat back that is a backrest includes a seat back frame that forms a seat skeleton, a pad made of foamed resin that forms a seat outer shape, and a wire harness. The seat back frame includes a plate-like main body that supports the pad from the back side, and a frame-shaped peripheral wall that is disposed along the periphery of the main body. A stopper for gripping the wire harness is integrated at an appropriate position of the main body. This stopper is made of a plate material having a U-shaped cross section, and has a function as a clamp. And in a well-known technique, the wire harness currently arranged by the back surface side of a pad is latched and hold | maintained to the stop of a main part, arrange | positioning a pad on a seat back frame.

Japanese Patent Laying-Open No. 2006-145001

  However, since the stopper for holding the wire harness is essential in the configuration of the known technology, the increase in the number of parts of the sheet and the manufacturing cost is inevitable. In addition, when the work to lock the wire harness is performed manually, it is necessary to lock the wire harness to the stopper at an appropriate position while bending the wire harness appropriately, and the wiring harness wiring position is likely to vary. It was inferior in composition. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to hold the wire harness on the back side of the seat pad with a relatively simple configuration.

  As means for solving the above-mentioned problems, the vehicle seat of the first invention is arranged on the back side of the seat pad opposite to the seating surface, with a seat pad having an outer shape and capable of elastically supporting an occupant Wire harness. In this type of seat configuration, it is desirable to hold the wire harness on the back side of the seat pad with a relatively simple configuration. So, in this invention, at least one part of a wire harness is inserted in the groove part provided in the back surface of the seat pad. The groove portion is provided with a pair of interference portions that interfere with the wire harness in the groove portion from the surface direction of the back surface of the seat pad and restrict the movement of the wire harness in the drop-off direction with respect to the groove portion, and forms a pair. The first interference site and the second interference site are spaced apart in the direction in which the groove extends. In the present invention, the groove on the back surface of the seat pad is used as a routing route for the wire harness disposed on the back surface of the seat pad. And the 1st interference site | part and 2nd interference site | part which are provided in a groove part and make a pair interfere with a wire harness from the surface direction of the back surface of a seat pad, and control the movement of the drop-off direction. And the 1st interference part and the 2nd interference part are spaced apart and provided in the direction where a groove part extends. Thus, by making each interference site interfere with different positions of the wire harness in the direction in which the groove extends, the wire harness can be held in the groove without using a member such as a clamp. Furthermore, in this invention, a wire harness can be wired and hold | maintained in the appropriate position of the back surface side of a seat pad by the comparatively simple operation | work inserted in a groove part.

  The vehicle seat of the second invention is the vehicle seat of the first invention, wherein the groove portion is disposed opposite to each other across the wire harness in the groove portion in the surface direction of the back surface of the seat pad. And an inner wall. And the 1st interference part is constituted by the 1st projection part projected in the groove part from the 1st inner wall, and the 2nd inner wall part arranged opposite to the 1st projection part, and the 2nd interference part is It is comprised by the 2nd protrusion part which protrudes in the groove part from the 1st inner wall, and the 2nd inner wall part arrange | positioned facing the 2nd protrusion part. In the present invention, the corresponding projections of each interference site are configured to interfere with the wire harness relatively strongly, and both the first projection and the second projection are provided on the first inner wall. Thus, by arranging both protrusions together on the first inner wall side, the wire harness can be inserted into the groove portion relatively smoothly from the second inner wall side.

  The vehicle seat according to a third aspect is the vehicle seat according to the first aspect, wherein the groove portion is disposed opposite to each other across the wire harness in the groove portion in the surface direction of the back surface of the seat pad. And an inner wall. And the 1st interference part is constituted by the 1st projection part projected in the groove part from the 1st inner wall, and the 2nd inner wall part arranged opposite to the 1st projection part, and the 2nd interference part is It is comprised by the 2nd projection part which protrudes in the groove part from the 2nd inner wall, and the 1st inner wall part arrange | positioned facing the 2nd projection part. In the present invention, the corresponding protrusions of each interference portion are configured to interfere with the wire harness relatively strongly, and the first protrusion and the second protrusion are provided on different inner walls. And a 1st interference site | part and a 2nd interference site | part strongly interfere from the different direction with respect to the wire harness in a groove part, and can hold a wire harness in a groove part more stably.

  The vehicle seat of the fourth invention is the vehicle seat of the second invention or the third invention, wherein the first protrusion and the second protrusion are each a groove on the basis of the state before the wire harness is inserted into the groove. It has a surface contact portion capable of surface contact with the inner wire harness. In the present invention, the first protrusion and the second protrusion are provided with surface contact portions that come into surface contact with the wire harness, so that the wire harness in the groove can reliably cause interference.

  The vehicle seat of the fifth invention is the vehicle seat of the second invention or the third invention, wherein the first projecting portion and the second projecting portion are each a groove portion on the basis of the state before the wire harness is inserted into the groove portion. The dimensions are gradually reduced toward the inside. In the present invention, the first protrusion and the second protrusion are made to interfere with the wire harness in the groove at these small portions. Thus, by making each protrusion part interfere locally with respect to the wire harness in a groove part, when inserting a wire harness into a groove part, the resistance which a wire harness receives from each protrusion part can be decreased.

  The vehicle seat of the sixth invention is the vehicle seat of any one of the first to fifth inventions, wherein the first interference site and the second interference site are between the first interference site and the second interference site. A general site where interference with the wire harness in the groove is small compared to the interference site is provided. In this invention, a wire harness can be smoothly inserted in a groove part from the general site | part with relatively small interference. Moreover, in this invention, from a viewpoint of hold | maintaining a wire harness stably, the wire harness in a groove part may be bent in an appropriate direction by interference with each interference part. At this time, since the bending deformation of the wire harness in the general part is avoided as much as possible, the wire harness in the groove can be appropriately bent by each interference part.

  The vehicle seat of the seventh invention is the vehicle seat of any one of the first to sixth inventions, wherein the groove is first curved in a U-shape in one direction in the surface direction of the back surface of the seat pad. A curved portion and a second curved portion that is curved in a U-shape in a direction opposite to the one direction are provided adjacent to each other, a first interference portion is provided at the apex portion of the first curved portion, and the second A second interference site is provided at the apex of the curved site. In this invention, the wire harness in a groove part is made into an appropriate bending shape by each curved part. And by providing the interference site | part corresponding to the vertex part of each bending part used as the bending | flexion base point of a wire harness, the bending shape of the planned wire harness can be more reliably maintained by each interference site | part.

  The vehicle seat of the eighth invention is the vehicle seat of the seventh invention, wherein the first interference part is provided only at the vertex part of the first curved part, and the second interference part only at the vertex part of the second curved part. Is provided. In this invention, since the interference site | part corresponding only to the vertex part of each curved site | part used as the bending | flexion base point of a wire harness is provided, it can avoid bending a wire harness as much as possible in the location which is not planned.

  According to the first invention of the present invention, the wire harness can be held on the back surface side of the seat pad with a relatively simple configuration. According to the second invention, the wire harness can be inserted and held on the back surface of the seat pad with good workability. Moreover, according to the 3rd invention, a wire harness can be stably hold | maintained by the back surface side of a seat pad. Moreover, according to the 4th invention, a wire harness can be hold | maintained more stably to the back surface side of a seat pad. According to the fifth invention, the wire harness can be inserted and held on the back surface of the seat pad with good workability. According to the sixth aspect of the invention, the wire harness can be inserted with good workability through the groove on the back surface of the seat pad and appropriately held. According to the seventh invention, the wire harness can be stably held on the back surface side of the seat pad. And according to the 8th invention, a wire harness can be hold | maintained more stably to the back surface side of a seat pad.

It is a perspective view of a vehicle seat. It is a perspective view of a seat pad. It is a reverse view of a part of seat pad. It is an enlarged back view of a part of the seat pad. It is the expansion perspective view which fractured | ruptured and showed the seat pad partially. It is the perspective view which looked at a part of seat pad of modification 1 from the back side. 10 is an enlarged back view of a part of a seat pad according to a second modification. FIG. 10 is an enlarged perspective view showing a seat pad of Modification 2 with a part thereof broken. It is an enlarged back view of a part of another example seat pad.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each figure, arrows indicating the front-rear direction, the vertical direction, and the left-right direction of the vehicle seat are appropriately illustrated. In FIG. 4, FIG. 6, FIG. 7, and FIG. 9, for convenience, the wire harness is shown with dots. A vehicle seat 2 in FIG. 1 is a bench seat on which a plurality of passengers can be seated. The seat cushion 4 is long in the left-right direction, which is the seat width direction, a plurality of seat backs 6a to 6c, and a plurality of headrests 8a. ~ 8c. And the lower part of each seat back 6a-6c of the standing state is connected with the rear part of the seat cushion 4 (it mentions later in detail) so that raising / lowering is possible respectively. Corresponding headrests 8a to 8c are disposed above the seat backs 6a to 6c in the standing state.

  The seat cushion 4 is formed by covering a seat pad 4P (described later in detail) on a seat frame 4F (not shown) with a seat cover 4S with reference to FIG. Here, the seat frame 4F is typically a substantially rectangular frame, and can be formed of a material such as metal or hard resin having excellent rigidity. The seat cover 4S is a surface material that covers the upper surface forming the seating surface of the seat pad 4P, and can be formed of, for example, a fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather).

[Wire Harness]
Various electric parts (not shown) are mounted on the vehicle seat 2, and a wire for supplying electric power to the electric parts is provided on the back side of the seat pad 4P of the seat cushion 4 shown in FIGS. The harness 10 is routed. The wire harness 10 is a cord-like member that electrically connects an electrical component and a power source, and is drawn into the back surface of the seat pad 4P from a through hole 4H provided on the right side of the seat pad 4P. The wire harness 10 is routed so as to have a generally U-shaped convex shape on the back surface of the seat pad 4P, and is divided into two forks at a portion extending in the left-right direction of the wire harness 10. The left portion of the wire harness 10 and the branch portion 11 branched from the wire harness 10 are each extended rearward and pulled out rearward of the seat pad 4P. And the socket 10a provided in the rear end of the left side of the wire harness 10 is connected to the socket 13a of the wire harness 13 wired by the seat back side. Similarly, a socket 11a provided at the rear end of the branch portion 11 is connected to a socket 12a of a wire harness 12 of a power source (not shown) provided on the body side.

  In the vehicle seat 2 described above, there is a concern that abnormal noise may occur or the wire harness 10 may be damaged due to the wire harness 10 fluttering and coming into contact with the back surface of the seat pad 4P. For this reason, the wire harness 10 is held on the back surface of the seat cushion 4. However, in this type of seat configuration, it is desirable not to use a member such as a clamp as much as possible from the viewpoint of reducing the number of parts of the seat. Therefore, in this embodiment, the wire harness 10 is held on the back surface side of the seat pad 4P with a relatively simple configuration to be described later. Hereinafter, each configuration will be described in detail.

[Seat pad]
2 and 3, the seat pad 4P is a substantially rectangular member as viewed from above that forms the outer shape of the seat cushion, and can elastically expand and contract to support the occupant. The seat pad 4P has a first seat pad part 4Pa, a second seat pad part 4Pb, and a groove 20 described later. The first seat pad portion 4Pa is a substantially rectangular portion that is long in the left and right directions when viewed from above, and has an outer shape including a seating surface (upper surface in each drawing) of the seat pad 4P. This first seat pad part 4Pa is a part that elastically supports the occupant, and can be formed of a foamed resin such as polyurethane foam (density: 10 kg / m ^{3 to} 60 kg / m ³ ).

  The second seat pad part 4Pb is a substantially rectangular frame-like part, which is harder than the first seat pad part 4Pa and is hard to deform (the material of the second seat pad part will be described later). The outer dimension of the second seat pad part 4Pb is a dimension that fits on the outer periphery of the first seat pad part 4Pa when the seat pad 4P is viewed from the back side with reference to FIG. And 2nd seat pad site | part 4Pb is integrated by the back form of 1st seat pad site | part 4Pa in the embedded form. Furthermore, the back surface of the second seat pad portion 4Pb is exposed on the back side of the seat pad 4P and constitutes a part of the back surface of the seat pad 4P. Here, the method for attaching the second seat pad part 4Pb is not particularly limited, but the first sheet pad part 4Pa can be molded simultaneously with the second sheet pad part 4Pb by a technique such as insert molding. Further, after the first seat pad part 4Pa and the second sheet pad part 4Pb are individually formed, both the pad parts 4Pa and 4Pb can be integrated by a technique such as adhesion, fusion or adhesion.

  Here, the first seat pad part 4Pa and the second sheet pad part 4Pb can be formed of different materials, or can be formed of the same kind of material. For example, the second seat pad portion 4Pb can be formed of a different material such as a relatively hard and light polystyrene foam or polypropylene foam from the viewpoint of reducing the weight of the seat pad 4P and providing an appropriate bulk. The second seat pad part 4Pb can also be formed of polyurethane foam in the same manner as the first sheet pad part 4Pa. And a polyurethane foam can change a density and hardness by changing the component and foaming method of a urethane stock solution. That is, a typical polyurethane foam is produced by reacting a polyol and a polyfunctional isocyanate in the presence of a blowing agent, a foam stabilizer and a catalyst. By doing so, it is possible to increase the hardness of the polyurethane foam forming the second seat pad part 4Pb and further reduce the weight of the seat pad 4P by making the density lower than that of the first seat pad part 4Pa.

[Groove]
Referring to FIG. 3, the groove portion 20 is a linear concave portion provided on the rear rear surface of the second seat pad portion 4Pb, and has a pair of interference portions 31, 32 and a general portion 33 which will be described later. ing. The groove portion 20 has a shape that follows the wire harness 10 routed on the back surface of the seat pad 4 </ b> P, and can be used as a routing route for the wire harness 10. That is, the groove portion 20 has a lateral groove portion 21 extending in the left-right direction and a plurality of vertical groove portions (left vertical groove portion 22, central vertical groove portion 23, right vertical groove portion 24) extending in the front-rear direction. ing. The lateral groove portion 21 is a groove portion that extends linearly from the front position of the through hole 4H of the seat pad 4P toward the right. The plurality of longitudinal groove portions 22 to 24 are provided at appropriate intervals in the left-right direction, and communicate with the lateral groove portion 21 at their front ends. And the left vertical groove part 22 is a vertical groove part arrange | positioned at the leftmost side, and is linearly extended toward the through-hole 4H of the seat pad 4P from the left end of the horizontal groove part 21. FIG. The central longitudinal groove portion 23 is a longitudinal groove portion disposed on the right side of the left longitudinal groove portion 22 and linearly extends from the lateral groove portion 21 toward the rear edge of the seat pad 4P. The right vertical groove part 24 is a vertical groove part arranged on the right side of the central vertical groove part 23 and linearly extends from the right end of the horizontal groove part 21 toward the rear edge of the seat pad 4P. And the wire harness 10 is arrange | positioned ranging over the left vertical groove part 22, the horizontal groove part 21, and the right vertical groove part 24, and also the branching part 11 of the wire harness 10 is arrange | positioned in the center vertical groove part 23. FIG.

  Here, since each groove part 21-24 has the same basic composition although extension directions differ, the detail is demonstrated to the right vertical groove part 24 as an example below. 4 and 5, the right vertical groove portion 24 includes a bottom surface 24a extending in the front-rear direction, a first inner wall 24b rising from the left edge of the bottom surface 24a, and a right edge of the bottom surface 24a. It has the 2nd inner wall 24c which has stood up. The first inner wall 24b and the second inner wall 24c extend in the front-rear direction in a state of facing each other, and the wire harness 10 is disposed between the inner walls 24b and 24c. And the opening dimension of the right vertical groove part 24 can be prescribed | regulated by the left-right separation dimension of the 1st inner wall 24b and the 2nd inner wall 24c in general, and is suitably set according to the diameter dimension (phi) of the wire harness 10 so that it may mention later. Further, the other vertical groove portions 22 and 23 shown in FIG. 3 have the same configuration as the right vertical groove portion 24, and the horizontal groove portion 21 has the right vertical groove except that the bottom surface 24a and each inner wall extend in the left-right direction. The structure is the same as that of the part 24.

[Interference part and general part]
Then, in consideration of the shape and dimensions of the wire harness 10 and the like in each of the groove parts 21 to 24 shown in FIG. A part 32) and a general part 33 are provided. For example, in the present embodiment, an example will be described in which a first interference portion 31, a second interference portion 32, and a general portion 33 are provided in the right vertical groove portion 24 shown in FIG. That is, in the right vertical groove part 24, the first interference part 31, the general part 33, and the second interference part 32 are provided adjacently from the rear to the front in this order. The first interference portion 31 and the second interference portion 32 (both described later in detail) are portions that interfere with the wire harness 10 in the groove portion 20 from the surface direction of the back surface of the seat pad 4P (the left-right direction in FIG. 3). Yes, the movement of the wire harness 10 in the drop-off direction (downward) with respect to the groove 20 can be restricted. And in the right vertical groove part 24, the 1st interference part 31 and the 2nd interference part 32 are spaced apart by the suitable space | interval in the front-back direction. Further, the general part 33 is a part that has less interference with the wire harness 10 than the interference parts 31 and 32, and is provided between the first interference part 31 and the second interference part 32. The general portion 33 is configured by the inner walls 24 b and 24 c of the right vertical groove portion 24. And the general site | part 33 of a present Example has the opening dimension W1 wider than the diameter dimension (phi) of the wire harness 10 with reference to FIG. 5, and is a site | part which does not interfere with the wire harness 10 substantially. Note that the right vertical groove part 24 behind the first interference part 31 and the right vertical groove part 24 ahead of the second interference part 32 shown in FIG. It is a groove part.

[First and second interference sites]
And the 1st interference site | part 31 is a groove site | part part which has the opening dimension W2 narrower than the diameter dimension (phi) of the wire harness 10 with reference to FIG. The first interference portion 31 includes a first protrusion 41 provided on the first inner wall 24b and a second inner wall 24c portion that faces the first protrusion 41. The first protrusion 41 is a quadrangular columnar portion formed by the elastically contractible second seat pad portion 4Pb, and has a first surface contact portion 41a that can be brought into surface contact with the wire harness 10. The first surface contact portion 41a is configured by the right surface of the first protrusion 41 that protrudes rightmost in the groove portion 20, and is substantially flat in the vertical and horizontal directions and continues in the depth direction of the groove portion 20. Is formed. The second interference part 32 is also a narrow groove part similar to the first interference part 31 with reference to FIG. 4, and the second protrusion 42 provided on the first inner wall 24b, It is comprised by the 2nd inner wall 24c part arrange | positioned facing the protrusion part 42. FIG. The second protruding portion 42 is a portion having substantially the same configuration as the first protruding portion 41, and has a second surface contact portion 42a. The second surface contact portion 42a is configured by the right surface of the second protrusion 42 that protrudes rightmost in the groove portion 20, and is substantially flat in the vertical and horizontal directions and continues in the depth direction of the groove portion 20. Is formed.

[Holding work of wire harness]
2 and 3, the wire harness 10 is pulled out from the through hole 4H of the seat pad 4P to the back surface and then held on the back surface of the seat pad 4P. In this type of seat configuration, it is desirable that the wire harness 10 can be held on the back side of the seat pad 4P with a relatively simple configuration that does not require a member such as a clamp. Therefore, in this embodiment, as shown in FIG. 3, the wire harness 10 is inserted into the groove portion 20 provided on the back surface of the seat pad 4 </ b> P. 31 and the 2nd interference part 32 are spaced apart and provided in the direction where the groove part 20 is extended. And the 1st interference site | part 31 and the 2nd interference site | part 32 interfere with the wire harness 10 in the groove part 20 from the surface direction of the back surface of the seat pad 4P, respectively, and the movement of the drop direction of the wire harness 10 with respect to the groove part 20 is carried out. It is regulated.

  That is, in this embodiment, with reference to FIG. 4, the wire harness 10 is held in a state of being inserted into the right vertical groove portion 24 of the groove portion 20. At this time, the wire harness 10 can be smoothly inserted into the right vertical groove part 24 from the general part 33 provided between the first interference part 31 and the second interference part 32. In particular, in the present embodiment, the interference portions 31 and 32 are collectively provided on the first inner wall 24b which is one of the pair of inner walls, so that the wire harness 10 is not disturbed by the interference portions 31 and 32 as much as possible. It can be inserted into the groove 20 from the second inner wall 24c side.

  Then, with reference to FIG. 4, the wire harness 10 is inserted into each of the interference sites 31 and 32 while expanding the first interference site 31 and the second interference site 32 to the left and right. Both interference portions 31 and 32 interfere with the wire harness 10 in the right vertical groove portion 24 from the left and right directions. That is, in the 1st interference part 31, with reference to FIG.4 and FIG.5, the 1st projection part 41 protrudes rightward from the 1st inner wall 24b, and the 1st surface contact part 41a of this 1st projection part 41 is a wire. The left side of the harness 10 is in surface contact. The first protrusion 41 in this state is elastically stretched by being pressed against the wire harness 10 and relatively strongly interferes with the wire harness 10. Further, the wire harness 10 is pressed by the first protrusion 41 and pressed against the second inner wall 24c. Since the first protrusion 41 strongly interferes with the left side of the wire harness 10 and the second inner wall 24c interferes with the right side of the wire harness 10 in this way, the direction in which the wire harness 10 drops off at the first interference site 31 (downward) ) Will be restricted. Similarly, also in the second interference part 32 shown in FIG. 4, the second surface contact part 42 a of the second protrusion 42 strongly interferes with the left side of the wire harness 10, and the second inner wall 24 c is on the right side of the wire harness 10. It is interfering. For this reason, also in the 2nd interference site | part 32, the movement of the removal direction of the wire harness 10 will be controlled. In the present embodiment, the first interference site 31 and the second interference site 32 interfere with each other at different positions of the wire harness 10 in the front-rear direction. By holding the wire harness 20 at the two interference sites 31 and 32 in a well-balanced manner in the front-rear direction in this way, the wire harness 10 is held in the right vertical groove portion 24 without requiring a member such as a clamp. I can leave.

  As described above, in this embodiment, the groove portion 20 on the back surface of the seat pad 4P is used as a routing route for the wire harness 10 disposed on the back surface of the seat pad 4P. And the 1st interference site | part 31 and the 2nd interference site | part 32 which are provided in the groove part 20 and make a pair interfere with the wire harness 10 from the surface direction of the back surface of the seat pad 4P, and regulate the movement of the drop-off direction. And the 1st interference part 31 and the 2nd interference part 32 are spaced apart and provided in the direction where the groove part 20 is extended. Thus, by interfering each interference part (31, 32) with a different position of the wire harness 10 in the extending direction of the groove part 20, the wire harness 10 is held in the groove part 20 without using a member such as a clamp. It becomes possible. In particular, the first protrusion 41 and the second protrusion 42 are provided with the surface contact portions 41 a and 42 a that are in surface contact with the wire harness 10, so that the wire harness 10 in the groove 20 can reliably interfere with each other. .

  Furthermore, in this embodiment, the wire harness 10 can be routed and held at an appropriate position on the back side of the seat pad 4P by a relatively simple operation of inserting the wire harness 10 into the groove portion 20. At this time, the wire harness 10 can be smoothly inserted into the groove part 20 from the general part 33 with relatively small interference. In the present embodiment, the corresponding protrusions 41 and 42 of the interference parts 31 and 32 are configured to interfere with the wire harness 10 relatively strongly, and the first protrusion 41 and the second protrusion 42 are further provided. Both are provided on the first inner wall 24b. Thus, by arranging both the protrusions 41 and 42 together on the first inner wall 24b side, the wire harness 10 can be inserted into the groove portion 20 relatively smoothly from the second inner wall 24c side. For this reason, according to the present Example, the wire harness 10 can be hold | maintained to the back surface side of the seat pad 4P with a comparatively simple structure. In this embodiment, since the wire harness 10 is held by using the groove portion 20 of the seat pad 4P, the wiring position of the wire harness 10 is unlikely to vary, and the configuration contributes to the reduction of the sheet manufacturing cost.

[Modification 1]
Here, the configuration of each interference site can take various configurations in addition to the configuration described above. For example, in the right vertical groove part 24 of the first modification, with reference to FIG. 6, the first protrusion 41 and the second protrusion 42 are provided on the inner wall of the right vertical groove part 24 different from the example. Is different. In the right vertical groove part 24, the first interference part 31A (same configuration as the first interference part 31 in FIG. 4), the general part 33A (same configuration as the general part 33 in FIG. 4), and the second interference The part 32A is provided adjacent to the front from the rear in this order. In this modification, the first protrusion 41 of the first interference part 31A is provided on the first inner wall 24b, and the second protrusion 42 of the second interference part 32A is provided on the second inner wall 24c. The second projecting portion 42 is a quadrangular prism-shaped portion that is symmetrical with the first projecting portion 41 and has a second surface contact portion 42a. The second surface contact portion 42a is configured by the left surface of the second protrusion 42 that protrudes leftmost in the groove 20, and is substantially flat in the vertical and horizontal directions and continues in the depth direction of the groove 20. Is formed.

  And the wire harness 10 is hold | maintained in the state inserted in the right vertical groove site | part 24 as shown in FIG. At this time, in the first interference part 31 </ b> A, the first surface contact part 41 a of the first protrusion 41 strongly interferes with the left side of the wire harness 10, and the second inner wall 24 c interferes with the right side of the wire harness 10. On the other hand, in the second interference part 32A, the second surface contact part 42a of the second protrusion 42 strongly interferes with the right side of the wire harness 10, and the first inner wall 24b interferes with the left side of the wire harness 10. Yes. As described above, the first interference site 31A and the second interference site 32A interfere with the wire harness 10 in the groove 20 from different directions (right and left in FIG. 6) in a balanced manner. The harness 10 can be held in the groove 20 more stably. Furthermore, in this modification, the wire harness 10 is slightly curved in an S shape due to the interference from the protrusions 41 and 42 and extends back and forth. As described above, the wire harness 10 is bent and the interference with the inner walls 24b and 24c is increased as compared with the case where the wire harness 10 is arranged in a straight line.

[Modification 2]
Further, referring to FIG. 7, the groove portion 25 of the modified example 2 is substantially curved in an S shape and extends in the front-rear direction, and the point that each of the protrusions 41 </ b> B and 42 </ b> B is a semi-cylindrical shape It is different from the example. The groove portion 25 is a groove portion having the same basic structure as the right vertical groove portion of the embodiment, and has a bottom surface 25a, a left first inner wall 25b, and a right second inner wall 25c. And the groove part 25 is curving in S shape in the surface direction of the back surface of the seat pad 4P, and the 1st curved site | part 51 and the 2nd curved site | part 52 are provided adjacent. The first curved portion 51 is a groove portion that is curved in a U-shape toward the right, and the front and rear portions are curved rightward with the first inner wall 25b portion arranged on the leftmost side as a vertex. ing. Further, the second curved portion 52 is a groove portion that is curved in a U shape toward the left, and the front and rear portions are curved leftward with the second inner wall 25c portion arranged on the rightmost side as a vertex. doing.

  Referring to FIG. 7, the groove portion 25 is provided with a first interference portion 31 </ b> B, a general portion 33 </ b> B, and a second interference portion 32 </ b> B adjacent in this order from the rear to the front. In the present modification, the first interference portion 31 </ b> B is provided at the apex portion of the first curved portion 51. Referring to FIG. 8, the first interference portion 31B includes a first protrusion 41B provided on the first inner wall 25b portion forming the apex, and a second inner wall 25c portion facing the first protrusion 41B. It consists of The first protrusion 41B is a semi-cylindrical part formed by the elastically contractible second seat pad part 4Pb, and the front and rear dimensions are gradually reduced toward the right. Referring to FIG. 7, a second interference site 32 </ b> B is provided at the apex portion of the second curved site 52. The second interference part 32B is composed of a second protrusion 42B provided at the apex of the second inner wall 25c and a first inner wall 25b part facing the second protrusion 42B. The second protrusion 42B is a semi-cylindrical portion formed by the second seat pad portion 4Pb and symmetrical to the first protrusion 41B, and the front and rear dimensions are gradually reduced toward the left. . And the general site | part 33B is a site | part with a small interference with respect to the wire harness 10 compared with each interference site | part 31B and 32B, and is provided between the 1st interference site | part 31B and the 2nd interference site | part 32B. This general part 33B is comprised by each inner wall 25b, 25c of the groove part 25, and is a site | part which does not interfere with the wire harness 10 substantially in a present Example.

  And in this modification, with reference to FIG. 7, by inserting the wire harness 10 in the groove part 25, it is in the curved shape (planned bending shape) along the 1st curved site | part 51 and the 2nd curved site | part 52. Hold intentionally. In this way, by causing the wire harness 10 to be curved in an approximately S shape in the surface direction of the back surface of the seat pad 4P, interference from the inner walls 24b and 24c is increased compared to a case where the wire harness 10 is arranged in a straight line. Omission is preferably avoided. And in this modification, when inserting while bending the wire harness 10, this wire harness 10 can be smoothly inserted in the groove part 25 from the general site | part 33B, curving in an appropriate direction. Moreover, since the bending deformation of the wire harness 10 in the general part 33B is avoided as much as possible, the wire harness 10 in the groove part 25 can be made into an appropriate bent shape by the interference parts 31 and 32 as described later.

  And since the 1st interference site | part 31B and the 2nd interference site | part 32B are interfering in the position where the wire harness 10 differs in the front-back direction, the wire harness 10 can be hold | maintained in the groove part 25. FIG. At this time, in the present modification, interference portions 31 and 32 corresponding to the apex portions of the bending portions 51 and 52 that are the bending base points of the wire harness 10 are provided. For this reason, the planned bending shape of the wire harness 10 can be more reliably maintained by the interference portions 31 and 32. Furthermore, since the interference parts 31 and 32 corresponding only to the apex part of each bending part 51 and 52 used as the bending | flexion base point of the wire harness 10 are provided, it is avoided as much as possible that the wire harness 10 bends in the part which is not planned. can do. Thus, also in this modification, by making each interference part (31B, 32B) interfere with a different position of the wire harness 10 in the extending direction of the groove portion 25, the wire harness 10 can be connected to the groove portion 25 without using a member such as a clamp. It is possible to keep it inside. In the present embodiment, the first protrusion 41B and the second protrusion 42B are caused to interfere with the wire harness 10 at their small end portions. That is, in this modification, each protrusion 41B, 42B is in a state of locally interfering with the wire harness 20 in the groove 25. By doing so, when the wire harness 20 is inserted into the groove 25, the resistance that the wire harness 20 receives from each of the protrusions 41B and 42B can be reduced as much as possible.

[Another example of modification 2]
A groove portion 25 of another example of FIG. 9 is a groove portion having a basic configuration similar to that of the groove portion 25 of the modified example 2 of FIG. 7 except that the first protrusion and the second protrusion are omitted. That is, in the groove portion 25 of another example, the first interference portion 31 </ b> B is provided at the apex portion of the first curved portion 51. The first interference part 31 </ b> B is configured by a second inner wall 25 c part that forms the apex part of the first bending part 51. A second interference part 32 </ b> B is provided at the apex part of the second curved part 52. The second interference portion 32B is configured by a first inner wall 25b portion that forms an apex portion of the second curved portion 52.

  Similarly to the second modification, the wire harness 10 is intentionally held in a curved shape along the first curved portion 51 and the second curved portion 52 by being inserted into the groove portion 25. At this time, in this other example, each interference part 31B, 32B is made to interfere with the wire harness 10 using the force which the wire harness 10 tries to return to an original state (generally linear shape). That is, the second inner wall 25c portion forming the first interference portion 31B protrudes to the left and strongly interferes with the right side of the wire harness 10 that is about to return. Further, the first inner wall 25b portion forming the second interference portion 32B protrudes to the right and strongly interferes with the left side of the wire harness 10 that is about to return to the original position. In this way, also in this example, each interference part (31B, 32B) can be caused to interfere with different positions of the wire harness 10 in the extending direction of the groove 25, thereby restricting the movement of the wire harness 10 in the drop-off direction relative to the groove 25. . And according to this example, it becomes possible to hold | maintain the wire harness 10 in the groove part 25 by the further simple structure which abbreviate | omitted each projection part.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. In the present embodiment, the configurations (shape, dimensions, arrangement position, number of arrangements, etc.) of each interference site 31, 32, etc. and general site 33, etc. are exemplified, but the configuration of each site is not intended to be limited. For example, the groove portion is provided with a plurality of or a plurality of first interference portions and second interference portions, and each of these portions is disposed at an appropriate position of the groove portion (for example, at least one of the groove portions in the embodiment). can do. In addition to the configuration that does not interfere with the wire harness, the general site can be configured to have less interference than each interference site although it interferes with the wire harness.

  In the present embodiment, the configuration (shape, size, arrangement position, number of formations, etc.) of the first projection 41 and the like and the second projection 42 that form each interference portion is exemplified, but the configuration of each projection It is not intended to limit. For example, each of the protrusions of the example and the modification 1 can have various configurations in addition to a rectangular shape, but preferably has a surface contact portion. As the shape of the protrusion having this type of surface contact portion, in addition to a rectangular shape (rectangle) in back view, various shapes such as a square, a parallelogram, and a trapezoid can be adopted, and the surface contact portion and the inner wall are connected. The shape of the side of the protrusion can be linear, curved, stepped, or the like. In addition, each protrusion of Modification 2 can take various shapes with a tapered tip, such as a semicircular shape in a back view, and a polygonal shape such as a semi-elliptical shape or a triangular shape. Further, the protrusion can be provided on at least one of the first inner wall and the second inner wall. At this time, the protrusion can be formed by using the seat pad, and the protrusion can be formed by a member different from the seat pad. . Moreover, as each interference part, the structure of each interference part (protrusion part) of an Example and each modification can be selected suitably, and can be used.

  Moreover, in this embodiment, although the structure (shape, dimension, formation position, number of formation, etc.) of the groove part 20 etc. was illustrated, it is not the meaning which limits the structure of a groove part. For example, the groove portion can take various shapes that follow the wire harness. For example, when the wire harness has a plurality of branch portions, the groove portion can take a shape that follows each branch portion. Moreover, as long as a groove part can hold | maintain a wire harness, only a part of wire harness may be inserted, and in this case, the other part of a wire harness does not insert in a groove part of a seat pad. Arranged on the back side. Moreover, in the groove part 25 of the modification 2, the example which provided the U-shaped 1st curved part 51 and the 2nd curved part 52 adjacently was demonstrated. In addition to the case where the U-shaped curved portion is exactly U-shaped, the U-shaped shape also includes a shape that gradually expands toward the front and rear as in the modified example, and is generally C-shaped, V-shaped, etc. Are also included in the U-shape. Moreover, the 1st curved site | part and the 2nd curved site | part should just make U shape substantially, and it is not necessary for the shape of these curved site | parts to be left-right symmetric completely, and it may be left-right asymmetric.

  In the present embodiment, the configuration (shape, dimensions, constituent members, etc.) of the vehicle seat 2 is exemplified, but the configuration of the vehicle seat is not limited, and a vehicle seat for one person may be used. Further, the seat pad can be configured only by the first seat pad portion. In addition to the seat cushion, the configuration of the present embodiment can be applied to various seat components such as a seat back and a headrest. And the structure of this embodiment is applicable to vehicle seats, such as a vehicle, an aircraft, and a train.

2 Vehicle seat 4 Seat cushions 6a to 6c Seat backs 8a to 8c Headrest 4F Seat frame 4S Seat cover 4P Seat pad 4Pa First seat pad part 4Pb Second seat pad part 4H Seat pad through-hole 10 Wire harness 11 Wire harness Branch part 20 Groove part 21 Horizontal groove part 22 Left vertical groove part 23 Central vertical groove part 24 Right vertical groove part 24a Bottom face 24b First inner wall 24c Second inner wall 31 First interference part 32 Second interference part 33 General part 41 First Protrusion 41a First surface contact portion 42 Second protrusion 42a Second surface contact portion 51 First curved portion 52 Second curved portion

Claims (8)

In a vehicle seat comprising a seat pad that can elastically support an occupant in the form of a seat, and a wire harness that is routed on the back side of the seat pad opposite to the seating surface,
At least a part of the wire harness is inserted into the groove provided on the back surface of the seat pad,
The groove portion is provided with a pair of interference portions that interfere with the wire harness in the groove portion from the surface direction of the back surface of the seat pad and restrict movement of the wire harness in the drop-off direction with respect to the groove portion. A vehicle seat in which a first interference site and a second interference site are spaced apart in the direction in which the groove extends. The groove portion has a first inner wall and a second inner wall that are arranged to face each other across the wire harness in the groove portion in the surface direction of the back surface of the seat pad,
The first interference part is composed of a first protrusion protruding into the groove from the first inner wall and a second inner wall portion arranged to face the first protrusion, and the second interference 2. The vehicle seat according to claim 1, wherein the portion is configured by a second projection protruding from the first inner wall into the groove and a second inner wall portion disposed to face the second projection. . The groove portion has a first inner wall and a second inner wall that are arranged to face each other across the wire harness in the groove portion in the surface direction of the back surface of the seat pad,
The first interference part is composed of a first protrusion protruding into the groove from the first inner wall and a second inner wall portion arranged to face the first protrusion, and the second interference 2. The vehicle seat according to claim 1, wherein the portion is configured by a second projection protruding from the second inner wall into the groove and a first inner wall portion disposed to face the second projection. .   On the basis of the state before the wire harness is inserted into the groove, the first protrusion and the second protrusion each have a surface contact portion capable of surface contact with the wire harness in the groove. The vehicle seat according to any one of claims 2 and 3.   The dimension of the said 1st projection part and said 2nd projection part is gradually made small as it goes in the said groove part on the basis of the state before the said wire harness is inserted in the said groove part, respectively. The vehicle seat according to any one of claims.   Between the first interference site and the second interference site, a general site is provided that has less interference with the wire harness in the groove than the first interference site and the second interference site. The vehicle seat according to any one of claims 1 to 5. In the groove portion, in the surface direction of the back surface of the seat pad, a first curved portion that is curved in a U shape in one direction, and a second curve that is curved in a U shape in a direction opposite to the one direction. A part is provided adjacent to it,
The said 1st interference part is provided in the vertex part of said 1st curved part, and said 2nd interference part is provided in the vertex part of said 2nd curved part. The vehicle seat described. The vehicle seat according to claim 7, wherein the first interference part is provided only at a vertex part of the first curved part, and the second interference part is provided only at a vertex part of the second curved part. .

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