Vehicle seat

Abstract

To provide a vehicle seat which can improve the degree of freedom of a wiring path of a wire harness.SOLUTION: A tubular member 30 is buried in a seat cushion pad 24 and the tubular member 30 is arranged so as to communicate to the outside of the seat cushion pad 24. A wire harness 40 is inserted to the tubular member 30. The tubular member 30 comprises: a first tube part 32 which includes one end 32A in the tube axis direction; a second tube part 36 which includes another end 36A in the tube axis direction; and a connection part 34 which connects the first tube part 32 with the second tube part 36. The first tube part 32 is buried on the lower end side of the seat cushion pad 24 and extends linearly along the horizontal direction, and an opening of the one end 32A in the tube axis direction communicates to the outside of the seat cushion pad 24. The second tube part 36 has another end 36A in the tube axis direction communicating to the upper outside of the seat cushion pad 24 and extends to the seat lower side from the other end 36A.SELECTED DRAWING: Figure 1

Description

Technical Field

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

Background Art

[0002] A vehicle seat equipped with electrical components such as a seating sensor in a seat cushion is known (see, for example, Patent Document 1). In such a vehicle seat, a wire harness for supplying power to the electrical components is arranged, and holes may be formed in the cushion pad of the seat cushion, for example, for inserting the wire harness.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when forming holes in the cushion pad using a mold, it is difficult to form the holes in a free shape due to processing constraints, and there is room for improvement in the prior art in terms of improving the degree of freedom of the routing path of the wire harness.

[0005] In consideration of the above facts, an object of the present invention is to obtain a vehicle seat capable of improving the degree of freedom of the routing path of the wire harness.

Means for Solving the Problems

[0006] The vehicle seat according to the first aspect of the present invention includes a seat cushion pad that is a pad material of a seat cushion, and a tubular member that is embedded in the seat cushion pad, formed in a tubular shape, arranged to communicate with the outside of the seat cushion pad, and through which a wire harness is passed. The tubular member includes one end in the tube axis direction of the tubular member, is embedded in the lower end side of the seat cushion pad and arranged along the horizontal direction, and the opening at one end in the tube axis direction communicates with the outside of the seat cushion pad; a first tube portion; a second tube portion that includes the other end in the tube axis direction of the tubular member, the opening at the other end in the tube axis direction communicates with the upper outside of the seat cushion pad, and extends from the other end to the lower side of the seat; and a connecting portion that connects the first tube portion and the second tube portion .

[0007] According to the above configuration, a tubular member is embedded in the seat cushion pad, and the tubular member is arranged so as to communicate with the outside of the seat cushion pad. A wire harness is passed through this tubular member. In such a configuration, by changing the shape of the tubular member and the arrangement position of the tubular member with respect to the seat cushion pad during manufacturing, it is possible to change the routing path of the wire harness.

[0009] Also The tubular member includes a first pipe portion including one end in the pipe axis direction and a second pipe portion including the other end in the pipe axis direction. The second pipe portion has an opening at the other end in the pipe axis direction communicating with the upper outside of the seat cushion pad and extends downward from the other end to the lower side of the seat. Therefore, it can be applied when electrical components are arranged on the upper surface side of the seat cushion pad. Further, the first pipe portion is embedded on the lower end side of the seat cushion pad and arranged along the horizontal direction, and the opening at one end in the pipe axis direction communicates with the outside of the seat cushion pad. Therefore, a seat cushion pad with a certain thickness can be arranged above the first pipe portion. Thus, it is possible to ensure a comfortable sitting feeling even when the first pipe portion is provided.

[0010] Claim 2 The vehicle seat according to the present invention described in claim 1 In the configuration described, the first pipe portion extends linearly from one end in the pipe axis direction to the boundary with the connecting portion.

[0011] According to the above configuration, the wire harness can be routed in such a path that it extends linearly along the horizontal direction inside the first pipe portion, bends upward inside the connecting portion, and further extends upward to the seat side inside the second pipe portion. Therefore, when electrical components are arranged on the upper surface side of the seat cushion pad, it is possible to minimize the routing path of the wire harness for supplying power to the electrical components.

[0012] Claim 3 The vehicle seat according to the present invention described in claim 1or in the configuration according to claim 2 in the configuration described above, the outer edge shape of the cross-section orthogonal to the pipe axis direction of each of the first pipe portion and the second pipe portion is a shape having a longitudinal direction.

[0013] According to the above configuration, directivity is imparted to the outer edge shape of the cross-section orthogonal to the pipe axis direction of each of the first pipe portion and the second pipe portion. Thereby, a configuration for suppressing the rotation of the tubular member when the tubular member is set in the mold during manufacturing can be easily adopted.

[0014] claim 4 The vehicle seat of the present invention described in claim 1 ~claim 3 in the configuration according to any one of claims

[0015] in the configuration according to any one of claims

Effect of the Invention

[0016] As described above, according to the vehicle seat of the present invention, there is an excellent effect that the degree of freedom of the routing path of the wire harness can be improved.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0018] [First Embodiment] Hereinafter, with reference to FIGS. 1 to 6, the vehicle seat 10 according to the first embodiment of the present invention will be described. In FIGS. 1 and 2, the arrows FR, UP, and W appropriately shown indicate the forward direction, upward direction, and left-right direction (seat width direction) of the vehicle seat 10, respectively. Hereinafter, when simply describing using the front-rear, up-down, and left-right directions, unless otherwise specified, it shall indicate the front-rear in the seat front-rear direction, the up-down in the seat up-down direction, and the left-right in the seat left-right direction (seat width direction). Also, in each figure, some reference numerals may be omitted for the sake of easy viewing of the drawing.

[0019] (Configuration) FIG. 1 shows a cross-sectional view of a vehicle seat 10 according to a first embodiment as seen from the side of the seat in a simplified manner. As shown in FIG. 1, the vehicle seat 10 according to the present embodiment includes a seat cushion 12 that is a seating portion, and a seat back 14 that is a backrest (only the outer contour line of the lower part of the seat back is shown by a two-dot chain line in the figure).

[0020] The seat cushion 12 includes a seat cushion frame 20, a seat cushion pad 24 that is a pad material attached to the seat cushion frame 20, and a skin 26 that covers the surface of the seat cushion pad 24. For the sake of convenience, the cross-section of the skin 26 is shown by a thick line without showing the thickness, and in order to make the figure easier to view, the portion where the skin 26 is in contact with the seat cushion pad 24 etc. is shown slightly separated.

[0021] The seat cushion frame 20 includes, as an example, a first pipe 20A formed in a U shape with the rear side of the seat open in a plan view of the seat, and a second pipe 20B that connects the rear end portions of the first pipes 20A. Further, a pan frame 22 is bridged over the frontward portion at the intermediate portion in the front-rear direction of the seat cushion frame 20.

[0022] The seat cushion pad 24 is made of a foam such as urethane foam. A recess 24A that opens upward is formed on the front side of the upper surface of the seat cushion pad 24. The internal space of the recess 24A is used as a space for connector connection.

[0023] The tubular member 30 is embedded in the seat cushion pad 24. In FIG. 1, for ease of viewing, the tubular member 30 is shown in a side view instead of a side sectional view. The tubular member 30 is a resin member integrally formed with the seat cushion pad 24, and is formed in a tubular shape and arranged so as to communicate with the outside of the seat cushion pad 24. This tubular member 30 can also be grasped as a hose-like member. The tubular member 30 is formed in a shape bent substantially in an L shape when viewed from the side of the seat, and includes a first pipe portion 32, a connecting portion 34, and a second pipe portion 36.

[0024] The first pipe portion 32 is configured to include one end 32A in the pipe axis direction of the tubular member 30, and is embedded in the lower end portion side of the seat cushion pad 24 and arranged along the horizontal direction, and the opening 32B (see FIG. 3) of the one end 32A in the pipe axis direction communicates with the outside of the seat cushion pad 24 (more specifically, the rear space). A through hole 26A is formed in the skin 26 corresponding to the opening 32B (see FIG. 3) at the tip of the first pipe portion 32 (one end 32A in the pipe axis direction of the tubular member 30). The first pipe portion 32 extends linearly along the front-rear direction of the seat from one end 32A in the pipe axis direction to the boundary with the connecting portion 34 described later.

[0025] The second pipe portion 36 is configured to include the other end 36A in the pipe axis direction of the tubular member 30, and the opening 36B (see FIG. 3) of the other end 36A in the pipe axis direction communicates with the upper outside of the seat cushion pad 24 and extends from the other end 36A to the lower side of the seat. The upper end portion of the second pipe portion 36 (the end portion on the other end 36A side in the pipe axis direction of the tubular member 30) slightly protrudes from the bottom surface of the recess 24A of the seat cushion pad 24.

[0026] The connecting portion 34 connects the first pipe portion 32 and the second pipe portion 36. That is, the connecting portion 34 constitutes a corner portion, and the outer periphery side of the corner extends linearly obliquely forward and upward of the seat when viewed from the side of the seat. This linear portion is formed in a flat plate shape as an example.

[0027] A wire harness 40 extending from the vehicle body side is passed through the tubular member 30. A harness connector 42 is provided on the tip side of the wire harness 40, and the harness connector 42 is disposed inside the upper portion of the second pipe portion 36 (the portion on the other end 36A side in the pipe axis direction of the tubular member 30), facing the inner space of the recess 24A of the seat cushion pad 24.

[0028] FIG. 2 shows an enlarged cross-sectional view of the state cut along the line 2-2 of FIG. 1. In FIG. 2, for convenience, the harness connector 42 is shown in a simplified manner. FIG. 3 shows a perspective view of the state before the tubular member 30 is embedded in the seat cushion pad 24 (see FIGS. 1 and 2). In FIG. 3, for convenience, a part of the longitudinal middle portion of the first pipe portion 32 is omitted from illustration, and the cross-sectional shapes orthogonal to the pipe axis directions of the first pipe portion 32 and the second pipe portion 36 are shown by two-dot chain lines.

[0029] As shown in FIGS. 2 and 3, the cross-sectional shape orthogonal to the pipe axis direction of the second pipe portion 36 is formed in a shape (a so-called racetrack shape) including a pair of straight portions 36X parallel to each other, and a pair of arc portions 36Y that connect the ends on one side and the ends on the other side of the pair of straight portions 36X and are curved so as to be convex outward and face each other. Similarly, the cross-sectional shape orthogonal to the pipe axis direction of the first pipe portion 32 shown in FIG. 3 is formed in a shape (the same shape as the cross-sectional shape orthogonal to the pipe axis direction of the second pipe portion 36) including a pair of straight portions 32X parallel to each other, and a pair of arc portions 32Y that connect the ends on one side and the ends on the other side of the pair of straight portions 32X and are curved so as to be convex outward and face each other.

[0030] In other words, in the tubular member 30, the shape including the pair of straight portions 32X and the pair of arc portions 32Y extends along the pipe axis direction in the first pipe portion 32, and the shape including the pair of straight portions 36X and the pair of arc portions 36Y extends along the pipe axis direction in the second pipe portion 36. The intervals between the pair of straight portions 32X and the intervals between the pair of straight portions 36X are both set in accordance with the dimensions of the harness connector 42 shown in FIG. 2.

[0031] Also, as shown in FIG. 3, the outer edge shape of the cross section orthogonal to the tube axis direction of each of the first tube portion 32 and the second tube portion 36 is a shape having a longitudinal direction. More specifically, in the outer edge shape of the cross section orthogonal to the tube axis direction of the first tube portion 32, the opposing direction of the pair of arc portions 32Y is the longitudinal direction, and the opposing direction of the pair of straight portions 32X is the short direction. Further, in the outer edge shape of the cross section orthogonal to the tube axis direction of the second tube portion 36, the opposing direction of the pair of arc portions 36Y is the longitudinal direction, and the opposing direction of the pair of straight portions 36X is the short direction.

[0032] As shown in FIG. 1, on the upper surface side of the seat cushion pad 24, a main body portion 52 (schematically shown in the figure) of the electrical component 50 covered with the skin 26 is arranged. The electrical component 50 is, for example, a seating sensor, a seat heater, a temperature sensor, etc., and is mounted on the seat cushion pad 24. A connector 56 is provided at the tip of a conductive wire 54 (illustrated by a solid line for convenience) extending from the main body portion 52 of the electrical component 50. The connector 56 is arranged in the recess 24A of the seat cushion pad 24 and is connected to the harness connector 42.

[0033] (Molding of Seat Cushion Pad) Next, the molding of the seat cushion pad 24 (manufacture of the seat cushion pad 24 in which the tubular member 30 is embedded) will be described with reference to FIGS. 4 to 6.

[0034] FIG. 4 shows a simplified cross-sectional view of a state in which the tubular member 30 is set in the mold 60 when molding the seat cushion pad 24 (see FIG. 1). In the following description, for convenience, the front-rear direction of the mold 60 refers to the same direction as the front-rear direction of the seat cushion pad 24 (see FIG. 1) to be molded, and the left-right direction of the mold 60 refers to the direction perpendicular to the paper surface of FIG. 4.

[0035] As shown in FIG. 4, the mold 60 is composed of an upper mold 62 and a lower mold 64. The upper mold 62 is a mold for molding the lower part of the sheet cushion pad 24 (see FIG. 1), and the lower mold 64 is a mold for molding the upper part of the sheet cushion pad 24. The reason for using the lower mold 64 instead of the upper mold 62 to mold the upper surface side of the sheet cushion pad 24 is to consider the possibility that cavities may occur in the upper molding part because the gas generated and rising during the molding of the sheet cushion pad 24 cannot escape outside the mold 60.

[0036] On the upper mold 62, a butting surface 62A is formed against which the tip surface (one end 32A in the tube axis direction) of the first tube portion 32 of the tubular member 30 abuts. The butting surface 62A is a surface continuous with the surface 62B that molds the lower rear surface of the sheet cushion pad 24 (see FIG. 1).

[0037] In addition, on the upper mold 62, a plurality of (two as an example) intermediate holding portions 62C for holding the longitudinal intermediate portion of the first tube portion 32 of the tubular member 30 are formed. The intermediate holding portions 62C project downward from the cavity top surface 62D that molds the lower surface of the sheet cushion pad 24 (see FIG. 1) in the upper mold 62.

[0038] FIG. 5 shows an enlarged cross-sectional view of the state cut along the line 5-5 in FIG. 4. As shown in FIG. 5, the intermediate holding portion 62C is formed in an inverted U shape when viewed in the front-rear direction of the mold 60, and the tubular member 30 is sandwiched from both left and right sides by a pair of vertical wall pieces 62C1 of the intermediate holding portion 62C with a pair of straight portions 32X of the first tube portion 32 arranged side by side. The pair of vertical wall pieces 62C1 have flexibility. At the tip ends of the pair of vertical wall pieces 62C1, claw portions 62C2 convex toward the approaching sides are formed. The claw portions 62C2 restrict the downward displacement of the first tube portion 32 with respect to the intermediate holding portion 62C. Also, at the portion connecting the base ends of the pair of vertical wall pieces 62C1 in the intermediate holding portion 62C, an arcuate surface 62C3 recessed upward in an arc shape is formed according to the shape of the arc portion 32Y of the first tube portion 32.

[0039] As shown in FIG. 4, the upper mold 62 is formed with a vertical wall portion 62E that restricts the foremost position of the tubular member 30. The vertical wall portion 62E protrudes downward from the cavity top surface 62D of the mold. A part of the tubular member 30 to be set, which is located on the front side in the sheet front-rear direction of the second tube portion 36, is applied to the rear surface of the vertical wall portion 62E. The lower end position of the vertical wall portion 62E is set slightly above the position of the tip surface (the other end 36A in the tube axis direction) of the second tube portion 36 in the tubular member 30 to be set in the up-down direction of the mold.

[0040] The lower mold 64 is formed with a protrusion 64A for supporting the second tube portion 36 of the tubular member 30 from below. The protrusion 64A protrudes upward from the cavity bottom surface 64B that forms the upper surface of the sheet cushion pad 24 (see FIG. 1) in the lower mold 64. The protrusion 64A includes a flat receiving portion 64A1 against which the tip surface (the other end 36A in the tube axis direction) of the second tube portion 36 of the tubular member 30 abuts when the mold 60 is closed.

[0041] FIG. 6 shows an enlarged view of a state in which the mold 60 (see FIG. 4) is closed and the tip surface (the other end 36A in the tube axis direction) of the second tube portion 36 of the tubular member 30 abuts against the flat receiving portion 64A1 of the protrusion 64A of the lower mold 64. As shown in FIG. 6, in the state where the mold 60 is closed, the rear portion (the right side portion in the figure) of the vertical wall portion 62E of the upper mold 62 is disposed above the front end portion (the left end portion in the figure) of the protrusion 64A of the lower mold 64. Further, the protrusion 64A has an annular protrusion 64A2 that protrudes upward from the mold on the outer peripheral side with respect to the flat receiving portion 64A1. In the state where the mold 60 is closed, the inner peripheral surface of the annular protrusion 64A2 is set to be adjacent to the outer peripheral surface of the tip portion of the second tube portion 36 of the tubular member 30 over the entire circumference.

[0042] The method of forming the seat cushion pad 24 shown in Fig. 1 will be outlined as follows. First, as shown in Fig. 4, a tubular member 30 is set in the upper mold 62. Next, after injecting a liquid urethane raw material into the lower mold 64, the mold 60 is closed as shown in Fig. 6. Note that in Fig. 6, for the sake of convenience, the illustration of the urethane raw material is omitted. When the mold 60 is closed, the vertical wall portion 62E of the upper mold 62 position-regulates (guides) so that the tip surface (the other end 36A in the tube axis direction) of the second tube portion 36 of the tubular member 30 abuts against the flat receiving portion 64A1 of the protrusion 64A of the lower mold 64.

[0043] Next, the urethane raw material is foamed by heating the mold 60 with a heater (not shown) and filled into the cavity 60C of the mold 60 (not shown). At this time, the intrusion of urethane into the second tube portion 36 of the tubular member 30 can be prevented or effectively suppressed by the annular protrusion 64A2. After that, the mold 60 is opened and the seat cushion pad 24, which is the molded product, is taken out. Thus, the seat cushion pad 24 in which the tubular member 30 is embedded is manufactured.

[0044] (Function and Effect) Next, the functions and effects of the above embodiment will be described.

[0045] As shown in Fig. 1, a tubular member 30 is embedded in the seat cushion pad 24, and the tubular member 30 is arranged so as to communicate with the outside of the seat cushion pad 24. A wire harness 40 is passed through this tubular member 30. In such a configuration, by changing the shape of the tubular member 30 and the arrangement position of the tubular member 30 with respect to the seat cushion pad 24 during manufacturing, it becomes possible to change the routing path of the wire harness 40. That is, it is possible to secure the routing path of the wire harness 40 without being affected by the manufacturing conditions of the mold.

[0046] Thus, according to the vehicle seat 10 of the present embodiment, it becomes possible to improve the degree of freedom of the routing path of the wire harness 40.

[0047] In addition, in the present embodiment, the tubular member 30 includes a first pipe portion 32 including one end 32A in the pipe axis direction thereof and a second pipe portion 36 including the other end 36A in the pipe axis direction. The second pipe portion 36 has an opening 36B (see FIG. 3) at the other end 36A in the pipe axis direction communicating with the upper outside of the seat cushion pad 24 and extending downward from the other end 36A to the lower side of the seat. Therefore, it has a configuration that can be applied when the electrical component 50 is disposed on the upper surface side of the seat cushion pad 24. Further, the first pipe portion 32 is embedded in the lower end portion side of the seat cushion pad 24 and disposed along the horizontal direction, and the opening 32B (see FIG. 3) at one end 32A in the pipe axis direction communicates with the outside of the seat cushion pad 24. Therefore, a seat cushion pad 24 having a certain thickness can be disposed above the first pipe portion 32. Thus, even if the first pipe portion 32 is provided, it is possible to ensure a comfortable sitting feeling.

[0048] Furthermore, in the present embodiment, in the tubular member 30, the first pipe portion 32 linearly extends from one end 32A in the pipe axis direction of the tubular member 30 to the boundary with the connecting portion 34. Thereby, the wire harness 40 can be routed in a path that linearly extends along the horizontal direction inside the first pipe portion 32, bends upward inside the connecting portion 34, and further extends upward from the seat inside the second pipe portion 36. Therefore, in the configuration in which the electrical component 50 is disposed on the upper surface side of the seat cushion pad 24, it is possible to realize the shortest routing path of the wire harness 40 for supplying power to the electrical component 50. As a result, it is also possible to reduce costs.

[0049] Also, in the present embodiment, as shown in FIG. 3, the outer edge shape of the cross section orthogonal to the pipe axis direction of each of the first pipe portion 32 and the second pipe portion 36 has a shape having a longitudinal direction, and directionality is imparted to the outer edge shape of the cross section orthogonal to the pipe axis direction of each of the first pipe portion 32 and the second pipe portion 36. Thereby, a configuration for suppressing the rotation of the tubular member 30 when the tubular member 30 is set in the mold 60 (see FIG. 4) during manufacturing can be easily adopted.

[0050] Furthermore, in the present embodiment, the cross-sectional shape orthogonal to the axial direction of the first pipe portion 32 is formed into a shape having directionality, including a pair of straight portions 32X and a pair of arc portions 32Y, and the cross-sectional shape orthogonal to the axial direction of the second pipe portion 36 is also formed into a shape having directionality, including a pair of straight portions 36X and a pair of arc portions 36Y. Therefore, for example, compared with the case where the cross-sectional shape orthogonal to the axial direction of each of the first pipe portion (32) and the second pipe portion (36) is circular, a configuration for suppressing the rotation of the tubular member 30 when the tubular member 30 is set in the mold 60 (see FIG. 4) during manufacturing can be easily adopted. Note that, by suppressing the rotation of the tubular member 30 set in the mold 60 (see FIG. 4), it is possible to effectively suppress or prevent the tubular member 30 from being inadvertently detached from the mold 60.

[0051] In addition, a pair of arc portions 32Y that protrude outward are formed in the cross-section orthogonal to the axial direction of the first pipe portion 32, and a pair of arc portions 36Y that protrude outward are formed in the cross-section orthogonal to the axial direction of the second pipe portion 36, which facilitates passing the harness connector 42 (see FIG. 2) through the first pipe portion 32 and the second pipe portion 36. Supplementary explanation will be given with reference to FIGS. 2 and 3. When the outer shape of the harness connector 42 is substantially rectangular parallelepiped, according to the configuration of the present embodiment, for example, compared with a configuration in which flat plate portions parallel to each other are formed instead of the pair of arc portions 32Y and the pair of arc portions 36Y, the contact area between the harness connector 42 and the first pipe portion 32 and the second pipe portion 36 when passing the harness connector 42 through the tubular member 30 can be reduced. Therefore, it is easy to pass the harness connector 42 through the first pipe portion 32 and the second pipe portion 36.

[0052] Note that, since the connecting portion 34 of the tubular member 30 extends linearly on the outer peripheral side of the corner obliquely forward above the sheet in a side view of the sheet, when bending and passing the wire harness 40 (see FIG. 1) into the tubular member 30, the inner surface on the outer peripheral side of the corner functions well as a guide portion, and it is easy to pass the wire harness 40.

[0053] [Second Embodiment] Next, the vehicle seat according to the second embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 shows a simplified perspective view of a seat cushion 72 of a vehicle seat 70 according to the present embodiment. In FIG. 7, in order to facilitate understanding of the configuration of the seat cushion 72, a part of the skin 76 covering the surface of the seat cushion pad 74, which is a pad material in the seat cushion 72, is cut away to show the seat cushion pad 74. The vehicle seat 70 according to the present embodiment includes a seat back (not shown) and has a substantially the same configuration as the vehicle seat 10 (see FIG. 1) according to the first embodiment, except for the points described below. Therefore, the components having substantially the same configuration as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

[0054] As shown in FIG. 7, the seat cushion 72 includes a tubular member 80 instead of the tubular member 30 (see FIG. 1). The tubular member 80 includes a first tube portion 82 configured to include one end 82A in the tube axis direction of the tubular member 80. The shape of the tubular member 80 is different from the shape of the tubular member 30 (see FIG. 1) in the first embodiment in that the first tube portion 82 is shorter in the longitudinal direction than the first tube portion 32 (see FIG. 1) in the first embodiment, but the other parts are the same as the shape of the tubular member 30 (see FIG. 1) in the first embodiment. For this reason, the connecting portion 34 and the second tube portion 36 of the tubular member 80 are, for convenience, denoted by the same reference numerals as the connecting portion 34 and the second tube portion 36 (both see FIG. 1 etc.) described in the first embodiment.

[0055] The tubular member 80 formed in a tubular shape is embedded in the seat cushion pad 74, arranged so as to communicate with the outside of the seat cushion pad 74, and a wire harness 90 (only a part is shown in the figure) is passed through it. The arrangement position of the tubular member 80 in the seat cushion pad 74 is such that the tubular member 30 (see FIG. 1) in the first embodiment is rotated 90° clockwise around the axis of the second tube portion 36 in a plan view of the seat. That is, the tubular member 80 is arranged such that the first tube portion 82 is embedded in the lower end portion side of the seat cushion pad 74 and extends along the horizontal direction and along the seat width direction. The opening 82B at the tip of the first tube portion 82 (one end 82A in the tube axis direction of the tubular member 80) communicates with the outside of the seat cushion pad 74 (more specifically, the side space). Further, a through hole 76A is formed in the skin 76 corresponding to the opening 82B of the first tube portion 82.

[0056] In addition, in this embodiment, as an example, a detection portion 92 (broadly speaking, the main body portion of an electrical component) of a seating sensor covered with the skin 26 is arranged on the upper surface side of the seat cushion pad 74. A connector (not shown) is provided at the tip of the transmission portion 94 extending from the detection portion 92, and this connector is connected to a harness connector (not shown) arranged in the second tube portion 36. The harness connector is provided on the tip side of the wire harness 90.

[0057] With the configuration of this embodiment as well, the same operations and effects as those of the first embodiment described above can be obtained.

[0058] [Supplementary Explanation of the Embodiment] In addition, in the first and second embodiments described with reference to FIGS. 1 to 7, the first tube portions 32 and 82 of the tubular members 30 and 80 extend linearly, but the first tube portion may be bent as appropriate according to the surrounding configuration and the like. Further, in the first and second embodiments, the tubular members 30 and 80 include the first tube portions 32 and 82, the connecting portion 34, and the second tube portion 36, but the configuration of the tubular member can be appropriately changed according to the arrangement position of the electrical components and the like. Note that when the tubular member does not include the first tube portion, the connecting portion, and the second tube portion of the present invention, it is a reference example rather than an embodiment of the present invention

[0059] In addition, in the first and second embodiments, the outer edge shape of the cross section orthogonal to the tube axis direction of each of the first tube portions 32 and 82 and the second tube portion 36 has a shape with a longitudinal direction. However, the outer edge shape of the cross section orthogonal to the tube axis direction of each of the first tube portion and the second tube portion may be a shape without a longitudinal direction (for example, a square shape or the like). Also, in the first and second embodiments, the cross-sectional shape orthogonal to the tube axis direction of each of the first tube portions 32 and 82 and the second tube portion 36 is a so-called racetrack shape. However, the cross-sectional shape orthogonal to the tube axis direction of each of the first tube portion and the second tube portion may be other shapes such as a hexagonal shape or the like.

[0060] Also, as a modification of the first and second embodiments, the electrical component attached to the seat cushion (12, 72) and powered using the wire harness (40, 90) may be other electrical components such as a seat belt reminder.

[0061] Also, in the first and second embodiments, the connecting portion 34 of the tubular members 30 and 80 extends linearly from the outer peripheral side of the corner obliquely forward above the seat in a side view of the seat. However, as a modification of the first and second embodiments, the connecting portion of the tubular member may be bent with a certain curvature, for example, on the outer peripheral side of the corner in a side view of the seat.

[0062] In addition, in the above embodiment, the protrusion 64A shown in FIG. 6 has an annular protrusion 64A2 that protrudes upward from the mold from a portion on the outer peripheral side with respect to the flat receiving portion 64A1, and such a configuration is preferable. However, as a modification of the above embodiment, a configuration without the annular protrusion 64A2 can also be adopted, or a configuration in which protrusions protruding upward from the mold from a portion on the outer peripheral side with respect to the flat receiving portion (64A1) are intermittently formed in the circumferential direction can also be adopted.

[0063] Note that the above embodiment and the plurality of modifications described above can be implemented in appropriate combinations.

[0064] Although an example of the present invention has been described above, the present invention is not limited to the above, and it goes without saying that various modifications can be made and implemented within the scope not departing from the gist of the invention other than the above.

Explanation of Reference Numerals

[0065] 10 Vehicle seat 12 Seat cushion 24 Seat cushion pad 30 Tubular member 32 First pipe portion 32A One end in the pipe axis direction 32B Opening at one end in the pipe axis direction 32X Straight portion 32Y Arc portion 34 Connecting portion 36 Second pipe portion 36A The other end in the pipe axis direction 36B Opening at the other end in the pipe axis direction 36X Straight portion 36Y Arc portion 40 Wire harness 70 Vehicle seat 72 Seat cushion 74 Seat cushion pad 80 Tubular member 82 First pipe portion 82A One end in the pipe axis direction 82B Opening at one end in the pipe axis direction 90 Wire harness

Claims

1. A seat cushion pad which is a pad material for a seat cushion, a tubular member which is embedded in the seat cushion pad, formed in a tubular shape, arranged so as to communicate with the outside of the seat cushion pad, and through which a wire harness is passed, and having, the tubular member, a first pipe portion which is configured to include one end in the pipe axis direction of the tubular member, is embedded in the lower end side of the seat cushion pad, is arranged along the horizontal direction, and the opening of the one end in the pipe axis direction communicates with the outside of the seat cushion pad, a second pipe portion which is configured to include the other end in the pipe axis direction of the tubular member, the opening of the other end in the pipe axis direction communicates with the upper outside of the seat cushion pad, and extends from the other end to the lower side of the seat, and a connecting portion connecting the first pipe portion and the second pipe portion, A vehicle seat comprising.

2. The vehicle seat according to claim 1, wherein the first pipe portion extends linearly from one end in the pipe axis direction to the boundary with the connecting portion.

3. The vehicle seat according to claim 1 or claim 2, wherein the outer edge shape of the cross section orthogonal to the pipe axis direction of each of the first pipe portion and the second pipe portion has a shape having a longitudinal direction.

4. The cross-sectional shape of each of the first pipe portion and the second pipe portion orthogonal to the pipe axis direction is formed in a shape including a pair of straight portions parallel to each other, and a pair of arc portions that connect the ends on one side and the ends on the other side of the pair of straight portions and are curved so as to be convex outward and face each other. The vehicle seat according to any one of claims 1 to 3.

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