Harness arrangement structure and vehicle seat

Abstract

To avoid deterioration of an appearance when a seat cushion is flipped up and to ensure a durability of a harness at the same time.SOLUTION: A harness arrangement structure includes: a seat cushion pad 20; a seat cushion frame 18 that can be flipped up toward a seat back 14 side from a rear end part, and has frame-shaped frame bodies 38, 40 embedded in the seat cushion pad 20 and wire frames 42, 44 fixed to the frame bodies 38, 40 and arranged in an exposed state on an underside of the seat cushion pad 20; a carpet material covering the underside of the seat cushion pad 20 and the wire frames 42, 44; harnesses 26R, 26S, 26L that are arranged between the seat cushion pad 20 and the carpet material; and brackets 28R, 28S, 28L that are attached to the wire frames 42, 44, and portions of the harnesses 26R, 26S, 26L are anchored thereto.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a harness routing structure for a seat cushion. [Background technology]

[0002] The following Patent Document 1 discloses a wiring device for supplying power to the third row seat of a vehicle that slides in the front-to-rear direction, folds the seat back onto the seat cushion, and then flips up sideways toward the side of the vehicle body to a stowed position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-165982 A Summary of the Invention [Problem to be solved by the invention]

[0004] When routing a harness to a seat cushion of a rear seat that can be flipped up toward the seat back, a challenge is to simultaneously avoid a deterioration in appearance when the seat cushion is flipped up while ensuring the durability of the harness.

[0005] In consideration of the above, the present invention has an object to provide a harness routing structure and a vehicle seat that can simultaneously avoid deterioration of the appearance when the seat cushion is in the flipped-up state and ensure the durability of the harness. [Means for solving the problem]

[0006] The harness routing structure of the first embodiment comprises a seat cushion pad, a frame-shaped frame main body embedded in the seat cushion pad and capable of being flipped up toward the seat back from its rear end, and a seat cushion frame having a wire frame fixed to the frame main body and arranged in an exposed state on the underside of the seat cushion pad, carpet material covering the underside of the seat cushion pad and the wire frame, a harness routed between the seat cushion pad and the carpet material, and a bracket attached to the wire frame and to which a portion of the harness is engaged.

[0007] According to the harness arrangement structure of the first aspect, the seat cushion frame has a frame body and a wire frame. The frame body can be flipped up toward the seat back with its rear end as a center, and is embedded in the seat cushion pad. The wire frame is fixed to the frame body and disposed in an exposed state on the underside of the seat cushion pad. The underside of the seat cushion pad and the wire frame are covered with a carpet material. A harness is arranged between the seat cushion pad and the carpet material. A part of the harness is engaged with a bracket attached to the wire frame. As a result, the harness is held by the wire frame, and it is possible to avoid a deterioration in appearance caused by the shape of the harness protruding from the carpet material when the seat cushion is flipped up. In addition, it is possible to suppress inadvertent displacement of the harness relative to the seat cushion frame, and therefore it is possible to ensure the durability of the harness.

[0008] In a harness routing structure of a second aspect, in the first aspect, the seat cushion frame has a plurality of the wire frames, and the bracket is bridged between the plurality of wire frames.

[0009] In the harness routing structure of the second aspect, the bracket is bridged between a plurality of wire frames of the seat cushion frame, which allows the bracket to be firmly attached to the seat cushion frame.

[0010] A vehicle seat of a third aspect includes a seat back and a seat cushion having the harness routing structure of the first or second aspect and capable of being flipped up toward the seat back around the rear end of the frame body.

[0011] According to the vehicle seat of the third aspect, the seat cushion can be flipped up toward the seat back around the rear end of the frame body. This seat cushion has the harness arrangement structure of the first or second aspect, and therefore the above-mentioned effects can be obtained. Effect of the Invention

[0012] As described above, according to the present invention, it is possible to avoid deterioration of the appearance when the seat cushion is in the flipped-up state, while ensuring the durability of the harness. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view showing a vehicle seat according to an embodiment; [Diagram 2] FIG. 2 is a perspective view showing a main part of a frame of the vehicle seat according to the embodiment. [Diagram 3] 1 is a perspective view showing a vehicle seat according to an embodiment of the present invention as viewed from below; [Figure 4] 4 is a perspective view showing a state in which a seat cushion covering and a carpet material are removed from the configuration shown in FIG. 3. [Diagram 5] 5 is a perspective view showing a state in which a seat cushion pad and the like are removed from the configuration shown in FIG. 4. [Figure 6] FIG. 6 is an enlarged perspective view showing a part of the configuration shown in FIG. 5. [Figure 7]7 is a perspective view showing a state in which the harness and the like are removed from the configuration shown in FIG. 6. [Figure 8] 6 is an enlarged perspective view of another part of the configuration shown in FIG. 5. FIG. [Figure 9] 9 is a perspective view showing a state in which the harness and the like are removed from the configuration shown in FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] A vehicle seat 10 according to an embodiment of the present invention will be described below with reference to Figs. 1 to 9. In each drawing, some reference symbols may be omitted in order to make the drawings easier to see. Arrows FR, LH, RH, and UP, which are appropriately written in each drawing, respectively indicate the front, left, right, and top of the vehicle seat 10. In the following description, when the front-rear, left-right, top-bottom directions are used, they indicate directions relative to the vehicle seat 10.

[0015] 1, a vehicle seat 10 according to this embodiment is a rear seat for seating three people, and includes a seat cushion 12, a seat back 14, and two headrests 16. As an example, the seat cushion 12 is divided into a right seat cushion 12R for seating two people and a left seat cushion 12L for seating one person.

[0016] The seat cushion 12 has a seat cushion frame 18 (see Figure 2) that forms its skeleton, a seat cushion pad 20 (see Figure 4) that is a cushioning material supported by the seat cushion frame 18, a seat cushion cover 22 (see Figure 1) that is a cover material covering the surface of the seat cushion pad 20, a carpet material 24 (see Figure 3) that covers the underside of the seat cushion pad 20, three harnesses 26R, 26S, 26L (see Figures 2, 4, and 5) that are arranged between the seat cushion pad 20 and the carpet material 24, and three brackets 28R, 28S, 28L (see Figures 4 and 5) that are attached to the seat cushion frame 18 and to which the three harnesses 26R, 26S, 26L are respectively attached.

[0017] The seat back 14 has a seat back frame 30 (see FIG. 2) constituting the skeleton thereof, a seat back pad (not shown) supported by the seat back frame 30, and a seat back skin 32 (see FIG. 1) covering the surface of the seat back pad. The head rest 16 has a head rest frame 34 (see FIG. 2) constituting the skeleton thereof, a head rest pad (not shown) supported by the head rest frame 34, and a head rest skin 36 (see FIG. 2) covering the surface of the head rest pad.

[0018] The seat cushion frame 18, the seat cushion pad 20, the carpet material 24, the three harnesses 26R, 26S, 26L, and the three brackets 28R, 28S, 28L constitute a harness arrangement structure according to one embodiment of the present invention. The seat cushion frame 18 is divided into a right cushion frame 18R that constitutes the framework of the right seat cushion 12R, and a left cushion frame 18L that constitutes the framework of the left seat cushion 12L.

[0019] The seat cushion pad 20 is divided into a right cushion pad 20R constituting the cushion material of the right seat cushion 12R and a left cushion pad 20L constituting the cushion material of the left seat cushion 12L. The seat cushion skin 22 is divided into a right cushion skin 22R constituting the skin material of the right seat cushion 12R and a left cushion skin 22L constituting the skin material of the left seat cushion 12L. Similarly, the carpet material 24 is divided into a right carpet material 24R covering the lower surface of the right cushion pad 20R and a left carpet material 24L covering the lower surface of the left cushion pad 20L.

[0020] 2, 4, and 5, the right cushion frame 18R has a frame-shaped frame main body 38 and a plurality of wire frames 42 fixed to the frame main body 38. The left cushion frame 18L has a frame-shaped frame main body 40 and a plurality of wire frames 44 fixed to the frame main body 40. The frame main bodies 38, 40 are formed by, for example, joining metal pipe material or press-formed metal plate material by means of welding or the like, and form a substantially rectangular frame shape in a plan view of the seat cushion 12. The plurality of wire frames 42, 44 are formed, for example, of metal wire material, are arranged in a lattice pattern, and are fixed to the frame main bodies 38, 40 by means of welding or the like.

[0021] The rear end of the frame body 38 of the right cushion frame 18R is connected to the floor of the vehicle via the right hinge bracket 46R and the central hinge bracket 46S. The rear end of the frame body 40 of the left cushion frame 18L is connected to the floor of the vehicle (not shown) via the left hinge bracket 46L and the central hinge bracket 46S. The right hinge bracket 46R is disposed at the right end of the vehicle seat 10, the central hinge bracket 46S is disposed at the middle part of the vehicle seat 10 in the left-right direction, and the left hinge bracket 46L is disposed at the left end of the vehicle seat 10. The right hinge bracket 46R, the central hinge bracket 46S, and the left hinge bracket 46L are fixed to the floor of the vehicle (not shown) by means of bolt fastening or the like.

[0022] The rear end of the frame body 38 of the right cushion frame 18R is rotatably connected to the right hinge bracket 46R and the central hinge bracket 46S via connecting shafts 48R and 48S whose axial direction is in the left-right direction. The rear end of the frame body 40 of the left cushion frame 18L is rotatably connected to the left hinge bracket 46L and the central hinge bracket 46S via connecting shafts 48S and 48L whose axial direction is in the left-right direction (seat width direction). This allows the frame bodies 38 and 40 to be flipped up toward the seat back 14 with the rear end as the center. A plurality of rubber cushion members 50 are attached to the front ends of the frame bodies 38 and 40, which come into contact with the floor of the vehicle when the frame bodies 38 and 40 are not flipped up.

[0023] As shown in Fig. 4, the frame body 38 of the right cushion frame 18R is mostly embedded in the right cushion pad 20R, and the multiple wire frames 42 of the right cushion frame 18R are mostly exposed on the underside of the right cushion pad 20R. The right cushion pad 20R is made of a foam that is foam-molded integrally with the right cushion frame 18R. The multiple wire frames 42 are covered from the lower side of the seat cushion 12 by the right carpet material 24R that covers the underside of the right cushion pad 20R.

[0024] Similarly, the frame body 40 of the left cushion frame 18L is mostly embedded in the left cushion pad 20L, and the multiple wire frames 44 of the left cushion frame 18L are mostly exposed on the underside of the left cushion pad 20L. The left cushion pad 20L is made of a foam that is foam-molded integrally with the left cushion frame 18L. The multiple wire frames 44 are covered from the lower side of the seat cushion 12 by the left carpet material 24L that covers the underside of the left cushion pad 20L.

[0025] Two harnesses 26R, 26S are arranged between the right cushion pad 20R and the right carpet material 24R, and one harness 26L is arranged between the left cushion pad 20L and the left carpet material 24L. The two harnesses 26R, 26S are electrically connected to two seating sensors 52R, 52S (see FIG. 5) arranged on the right seat cushion 12R, and the one harness 26L is electrically connected to one seating sensor 52L (see FIG. 5) arranged on the left seat cushion 12L.

[0026] The seating sensors 52R, 52S, 52L are, for example, pressure sensors, and are embedded in the right cushion pad 20R and the left cushion pad 20L. These seating sensors 52R, 52S, 52L detect whether or not an occupant is seated on the left seat cushion 12L and the right seat cushion 12R. These seating sensors 52R, 52S, 52L constitute a part of a seat belt reminder that reminds the occupant seated on the left seat cushion 12L and the right seat cushion 12R to fasten the seat belt.

[0027] As shown in Figures 4 to 6, two brackets 28R, 28S to which portions of the two harnesses 26R, 26S are anchored are attached to the wire frames 42 of the right cushion frame 18R. As shown in Figures 4, 5 and 8, one bracket 28L to which a portion of the one harness 26L is anchored is attached to the wire frames 44 of the left cushion frame 18L.

[0028] The brackets 28R, 28S, 28L are made of, for example, press-formed metal plate material, and are long plates with the left-right direction as the longitudinal direction. As shown in Figs. 4 to 6, the bracket 28R is disposed on the right side of the right seat cushion 12R. Both left-right end portions (both longitudinal end portions) of the bracket 28R are bent upwardly of the right seat cushion 12R into a crank-shaped cross section, and are fixed by means of welding or the like to two wire frames 42 extending in the front-rear direction of the right seat cushion 12R. In this way, the bracket 28R is bridged between the two wire frames 42.

[0029] As shown in Figs. 4 to 6, the bracket 28S is disposed on the left side of the right seat cushion 12R. A right end portion of the bracket 28S is bent upwardly of the right seat cushion 12R into a crank-shaped cross section, and is fixed by means of welding or the like to a single wire frame 42 extending in the left-right direction of the right seat cushion 12R. A left-right intermediate portion of the bracket 28S is bent upwardly of the right seat cushion 12R into a hat-shaped cross section, and is fixed by means of welding or the like to a single wire frame 42 extending in the front-rear direction of the right seat cushion 12R. In this way, the bracket 28S is bridged between the two wire frames 42.

[0030] 4, 5 and 8, the bracket 28L is disposed in the left-right center of the left seat cushion 12L. Both left-right ends (longitudinal ends) of the bracket 28L are bent upwardly of the left seat cushion 12L into a crank-shaped cross section and fixed by means of welding or the like to two wire frames 44 extending in the front-rear direction of the left seat cushion 12L. In this way, the bracket 28L is bridged between the two wire frames 44.

[0031] As shown in Fig. 6, the tip of the harness 26R is secured to the right side of the lower surface of the bracket 28R using a clip 54, and the middle part of the harness 26S is secured to the right side of the lower surface of the bracket 28R using a clip 56. The connection harness 52R1 of the seating sensor 52R is secured to the left side of the lower surface of the bracket 28R using a clip 58. The harness 26R and the connection harness 52R1 are connected to each other using a connector 60. The clips 54, 56, 58 and the connector 60 are made of, for example, resin, and are fitted and secured to locking holes 62, 64, 66, 68 (see Fig. 7) formed in the bracket 28R.

[0032] The tip of the harness 26S is secured to the right side of the underside of the bracket 28S by a clip 70. The connection harness 52S1 of the seating sensor 52S is secured to the left side of the underside of the bracket 28S by a clip 72. The harness 26S and the connection harness 52S1 are connected to each other by a connector 74. The clips 70, 72 and the connector 74 are made of, for example, resin, and are fitted and secured to locking holes 76, 78, 80 (see FIG. 7) formed in the bracket 28R.

[0033] The middle portions of the harnesses 26R, 26S are secured to the right end portion of the frame main body 38 using a clip 82 similar to that described above. This clip 82 is fitted and secured to a securing hole 84 (see FIG. 7) formed in the frame main body 38. The middle portion of the harness 26S is secured to the wire frame 42, which extends in the left-right direction and is located forward of the bracket 28R of the right seat cushion 12R, using a resin cable tie 86 (see FIG. 6).

[0034] As shown in FIG. 8, the tip of the harness 26L is secured to the left side of the lower surface of the bracket 28L by using a clip 88. The connection harness 52L1 of the seat sensor 52L is secured to the right side of the lower surface of the bracket 28L by using a clip 90. The harness 26L and the connection harness 52L1 are connected to each other by using a connector 92. The clips 88, 90 and the connector 92 are made of, for example, resin, and are fitted and secured to locking holes 94, 96, 98 (see FIG. 9) formed in the bracket 28L. The middle part of the harness 26L is secured to the left end of the frame main body 40 by using a clip 100 similar to the above. This clip 100 is fitted and secured to locking hole 102 (see FIG. 9) formed in the frame main body 40.

[0035] In the vehicle seat 10 configured as above, the right cushion frame 18R and the left cushion frame 18L constituting the seat cushion frame 18 have frame bodies 38, 40 and wire frames 42, 44. The frame bodies 38, 40 can be flipped up toward the seat back 14 with their rear ends as the center, and are embedded in the left cushion pad 20L and the right cushion pad 20R. The wire frames 42, 44 are fixed to the frame bodies 38, 40, and are arranged in an exposed state on the lower surface side of the right cushion pad 20R and the left cushion pad 20L. The lower surfaces of the right cushion pad 20R and the left cushion pad 20L and the wire frames 42, 44 are covered by the right carpet material 24R and the left carpet material 24L. The harnesses 26R, 26S, 26L are arranged between the right cushion pad 20R and the left cushion pad 20L and the right carpet material 24R and the left carpet material 24L. Parts of these harnesses 26R, 26S, 26L are engaged with brackets 28R, 28S, 28L attached to wire frames 42, 44. This allows the harnesses 26R, 26S, 26L to be held by the wire frames 42, 44, so that it is possible to prevent the harnesses 26R, 26S, 26L from protruding from the right carpet material 24R and the left carpet material 24L when the seat cushion 12 is in the flipped-up state, thereby preventing the harnesses 26R, 26S, 26L from protruding from the right carpet material 24R and the left carpet material 24L, which would otherwise cause a deterioration in appearance. In addition, it is possible to suppress inadvertent displacement of the harnesses 26R, 26S, 26L relative to the right cushion frame 18R and the left cushion frame 18L, so that it is possible to ensure the durability of the harnesses 26R, 26S, 26L.

[0036] In this embodiment, the brackets 28R, 28S, 28L are each bridged between the two wire frames 42, 44. This allows the brackets 28R, 28S, 28L to be firmly attached to the right cushion frame 18R and the left cushion frame 18L.

[0037] In the above embodiment, the brackets 28R, 28S, and 28L are configured to span between the two wire frames 42 and 44, respectively, but the present invention is not limited to this, and the manner in which the brackets are attached to the wire frames can be changed as appropriate.

[0038] In the above embodiment, the seat cushion 12 is divided into the right seat cushion 12R and the left seat cushion 12R, but the present invention is not limited to this and the seat cushion may be configured not to be divided.

[0039] In addition, in the above embodiment, the three harnesses 26R, 26S, and 26L arranged on the seat cushion 12 are engaged with the three brackets 28R, 28S, and 28L, but this is not limited to the above, and the number of harnesses and brackets can be changed as appropriate.

[0040] In addition, the present invention can be implemented in various modifications without departing from the spirit and scope of the present invention. Furthermore, the scope of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0041] 10 Vehicle seats 12 Seat cushion 14 Seat back 18 Seat cushion frame 20 Seat cushion pad 24 Carpet materials 26R, 26S, 26L Harness 28R, 28S, 28L bracket 38, 40 Frame body 42, 44 Wireframe

Claims

1. Seat cushion pad, a seat cushion frame including a frame-shaped frame body that can be flipped up toward the seat back from a rear end portion thereof and is embedded in the seat cushion pad, and a wire frame that is fixed to the frame body and is disposed in an exposed state on the underside of the seat cushion pad; A carpet material covering the underside of the seat cushion pad and the wire frame; a harness routed between the seat cushion pad and the carpet material; a bracket attached to the wire frame and to which a portion of the harness is secured; A harness routing structure comprising:

2. The seat cushion frame includes a plurality of the wire frames, The harness routing structure according to claim 1 , wherein the bracket is bridged between the plurality of wire frames.

3. Seat back and a seat cushion having the harness arrangement structure according to claim 1 or 2 and capable of being flipped up toward the seat back around a rear end of the frame body; A vehicle seat comprising:

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