JP7342793B2 - Vehicle seat seat back - Google Patents

Description

The present invention relates to a seat back for a vehicle seat.

2. Description of the Related Art Conventionally, in the seat back of a rear seat for three people, which is an automobile seat, there is one in which electrical equipment such as an air conditioner is attached inside and a wire harness for supplying power to the back is disposed. Such rear seats sometimes need to be transported between processes or factories, from the seat manufacturing process to the automobile assembly process. Patent Document 1 shows a rear seat having this type of seat back.

Japanese Patent Application Publication No. 2014-205404

In the above-mentioned automobile seats, when transporting the rear seat between processes or between factories, the seat back's wire harness is covered with a transport cover to prevent it from interfering with other parts or the transport container and being damaged. I had something to do. This poses a problem in that materials are required to transport the automobile seat. In addition, there is a problem in that the seat back of the rear seat has a part at the bottom that comes into contact with the car body when it is installed in the car, and it is necessary to attach a separate cover member to prevent damage caused by interference with that part. Ta.

In view of these demands, an object of the present invention is to provide a seat back for a vehicle seat that uses a simple structure to suppress damage to the wire harness during transport of the seat back and damage due to interference with the body when mounted on a vehicle. Our goal is to provide the following.

A first aspect of the present invention includes a seat pad that is a cushioning material and forms the outer shape of the seat, a seat cover that is a skin material that covers the seat pad, and a frame that is a skeleton disposed inside the seat pad. The present invention relates to a seat back for a vehicle seat, including an electric component disposed inside or in contact with the surface of the seat pad. Wiring connected to the electrical component is arranged on the back surface of the seat pad opposite to the seating surface, and a portion of the seat cover is overlapped with a lower portion of the seat pad that contacts the vehicle body. A pocket is provided. A portion of the wiring is inserted into the pocket and held when the seatback is transported within a factory or between factories.

According to the first invention, the seat back can be transported within a factory or between factories with a part of the wiring inserted and held in the pocket, so damage to the wiring during transportation can be suppressed. can. Furthermore, since the pocket is formed by overlapping a portion of the seat cover, damage to the seat pad can be suppressed even if that portion comes into contact with the vehicle body and is subjected to friction. As a result, with a simple structure, damage to the wiring during transportation of the seatback and damage due to interference with the vehicle body when mounted on a vehicle can be suppressed.

A second aspect of the present invention is based on the first aspect, wherein the pocket is provided on both sides of a recessed portion of the seat back in which a center armrest is attached, and the pocket is provided toward the front with the seat back attached to the vehicle body. It is characterized by having an opening that opens.

According to the second invention, when attaching the seat back to the vehicle body, it is easy to take out the wiring from the pocket and connect it to the wiring arranged on the vehicle body side.

FIG. 1 is a perspective view of a seat back of an automobile rear seat according to an embodiment of the present invention, viewed diagonally from the front. The back frame is indicated by a broken line. FIG. 3 is a perspective view of the seat back of the above embodiment as viewed diagonally from the front. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. FIG. 3 is a perspective view of the seat back of the above embodiment as viewed obliquely from the rear. 5 is a diagram showing an enlarged view of the V portion in FIG. 4. FIG.

1-5 illustrate one embodiment of the invention. This embodiment is an example in which the present invention is applied to a seat back 3 of a rear seat 1 for an automobile. In each figure, arrows indicate directions when the automobile rear seat 1 is attached to the automobile. In the following description, descriptions regarding directions will be made with this direction as a reference. The automobile rear seat 1 of this embodiment is a bench seat for three people, and has a length in the left and right direction that is approximately the same as the width of the vehicle interior, and includes a seat cushion 2 that serves as a seating area and a seat back 3 that serves as a backrest. It is equipped with. Here, the automobile rear seat 1 corresponds to a "vehicle seat" in the claims.

As shown in FIG. 1, the seat cushion 2 and the seat back 3 are fixed to the floor F of the automobile. Since the seat cushion 2 has a known configuration, the explanation will be omitted, and the seat back 3 will be explained. Here, the floor F corresponds to a "vehicle body" in the claims.

As shown in FIG. 1, the seat back 3 includes a back frame 10 that forms a skeleton, a back pad 20 that is a cushion material, and a back cover 30 that is a skin material. The seat back 3 includes a pair of left and right seat sections 3A and a center seat section 3B disposed between the left and right seat sections 3A, and is formed in a symmetrical shape. Here, the back frame 10, back pad 20, and back cover 30 correspond to the "frame", "seat pad", and "seat cover" in the claims, respectively.

As shown in FIG. 1, the back frame 10 is formed by combining steel wires having a diameter of about 5 mm, and is insert-molded into a back pad 20, which will be described later, to be integrated with the back pad 20. The back frame 10 includes a pair of left and right outer longitudinal wire portions 11 extending vertically on the outer side of each left and right seat portion 3A in the left and right direction (seat width direction), and a pair of left and right inner longitudinal wire portions 11 extending vertically on the inner side of each left and right seat portion 3A in the left and right direction. It has a vertical wire portion 12. The back frame 10 also includes an upper wire section 13 that extends in the left-right direction to connect the upper part of each outer longitudinal wire part 11 and the upper part of each inner longitudinal wire part 12, and a lower part of each outer longitudinal wire part 11 and each inner longitudinal wire part 12. It has a lower wire part 14 extending and connecting the lower part of the wire part 12 in the left-right direction. Further, the back frame 10 has a pair of left and right upper mounting wire sections 15 and a pair of left and right lower mounting wire sections 16 for attaching the blower device 40 arranged between the outer vertical wire section 11 and the inner longitudinal wire section 12. . Between the left and right upper mounting wire portions 15 and the left and right lower mounting wire portions 16, there are a pair of left and right air blowers that suck air from the seating surface side through through holes (not shown) provided in the back pad 20. A device 40 is installed. A wire harness 41 for supplying power to the blower device 40 is arranged on the side of the back surface 22 of the back pad 20, which is opposite to the seating surface 21. Here, the blower device 40 and the wire harness 41 correspond to "electrical components" and "wiring" in the claims, respectively.

As shown in FIGS. 2 and 3, the back pad 20 is integrally molded from urethane foam with the back frame 10 inserted therein. The urethane foam is a foam of urethane resin, and its density is about 0.04 g/cm ³ . The back pad 20 has a seating surface 21, which is a surface facing the body of the seated person, and a back surface 22, which is a surface opposite to the seating surface 21. The side of the seating surface 21 of the back pad 20 is covered by a back cover 30, and a recess 21a in which a center armrest (not shown) is arranged is formed at the center in the left-right direction.

As shown in FIGS. 2 and 3, the back cover 30 is made of a planar member in which a thin urethane slab pad is integrally laminated on a skin material such as fabric on the seating surface side. It is cut into multiple parts and sewn into one piece. The back cover 30 is attached to the back pad 20 by being placed over the front side (seating surface side) of the back pad 20 and fixing the end portions and the like to the back frame 10. The back cover 30 has good air permeability, and when air is sucked through the through hole (not shown) of the back pad 20, it generates an air flow around the body of the seated occupant and exhibits an air conditioning function. can.

The left and right sides of the recess 21a in the back cover 30 are formed by connecting an upper part 31, a middle part 32, and a lower part 33 at their respective terminal parts by sewing. Specifically, the lower end side of the upper part 31 and the upper end side of the middle part 32 are connected by the first sewing part 31a, and the lower end side of the middle part 32 and the upper end side of the lower part 33 are connected to each other by the second sewing part 31a. They are connected by a sewn portion 32a. On the upper end side of the upper part 31, the upper end of the upper locking part 34 is connected by a third sewing part 31b, and the hook member 34a attached to the lower end of the upper locking part 34 is a part of the back frame 10. It is locked to the upper locking wire 17. A front end portion of a bottom part 35 that covers the lower surface 23 of the back pad 20 is connected to the lower end side of the lower part 33 by a fourth sewn portion 33a. At the rear end of the bottom part 35, the rear end of the pocket forming part 36 and the lower end of the lower locking part 37 are overlapped in this order from the front and connected by a fifth sewing part 35a. A hook member 37a attached to the upper end of the lower locking portion 37 is locked to a lower locking wire 18 that is a part of the back frame 10. The front end portion of the pocket forming portion 36 is folded back toward the rear and sewn by a sixth sewing portion 36a to prevent the end from fraying. The left and right ends of the pocket forming part 36 are connected to the bottom part 35 by the seventh sewing part 36b, whereby the bottom part 35 and the pocket forming part 36 form a pocket part 36d having an opening 36c that opens toward the front. is formed. The upper part 31, the middle part 32, and the lower part 33 are made of fabric whose front side (seating surface side) is decorative, and includes an upper locking part 34, a bottom part 35, a pocket forming part 36, and a lower locking part. 37 is a black fabric with no decoration. The lower surface 23 of the back pad 20 covered by the bottom part 35 and the pocket forming part 36 is a part that may come into contact with the floor F and rub against each other when the seat back 3 is fixed to the floor F. Here, the pocket portion 36d corresponds to a "pocket" in the claims.

As shown in FIGS. 4 and 5, a part of the wire harness 41 disposed on the back surface 22 side of the back pad 20 is provided with an extending portion 41a that extends away from the back surface 22 of the back pad 20. ing. A connector 41b made of hard resin is attached to the distal end portion of the extending portion 41a. The extended portion 41a is a portion that may interfere with and damage other parts or a transportation container when the seat back 3 is transported between processes or between factories. Therefore, when transporting the seat back 3 between processes or factories, the extension part 41a is inserted into the pocket part 36d. Specifically, the extending portion 41a is bent, and with the connector 41b protruding from the pocket portion 36d, the bent portion is inserted into and held in the pocket portion 36d. After the transportation is completed, by pulling the connector 41b, the bent portion is pulled out from the pocket portion 36d, the extension portion 41a is extended, and the connector 41b is attached to the connector (not shown) disposed on the floor F side. engage. Here, the extending portion 41a corresponds to "a part of the wiring" in the claims.

The embodiment configured as described above has the following effects. Since the seat back 3 can be transported within a factory or between factories with the extension portion 41a of the wire harness 41 inserted and held in the pocket portion 36d, damage to the wire harness 41 during transportation can be suppressed. be able to. In addition, since the pocket part 36d is formed by overlapping the bottom part 35 of the back cover 30 and the pocket forming part 36, even if that part comes into contact with the floor F and receives friction, the back pad 20 is prevented from being damaged. It can be suppressed. This makes it possible to suppress damage to the wire harness 41 when transporting the seat back 3 and damage to the back pad 20 due to interference with the floor F when the seat back 3 is mounted on a vehicle. Furthermore, the pocket portion 36d is provided on both left and right sides of the recess 21a in which the center armrest is attached in the seat back 3, and has an opening 36c that opens toward the front when the seat back 3 is attached to the floor F. . Accordingly, when attaching the seat back 3 to the floor F, it is easy to take out the extension part 41a from the pocket part 36d and connect it to a connector disposed on the floor F side.

Although specific embodiments have been described above, the present invention is not limited to their appearance and configuration, and various changes, additions, and deletions can be made without changing the gist of the present invention. Examples include:

1. In the embodiment described above, the pocket portion 36d is formed by the bottom part 35, which is a non-decorative black fabric, and the pocket forming portion 36. However, the present invention is not limited thereto, and like the upper part 31, the middle part 32, and the lower part 33, they may be made of a decorative fabric.

2. In the embodiments described above, the present invention is applied to a car seat, but it may also be applied to a seat mounted on an airplane, a ship, a train, etc.

1 Automobile rear seat (vehicle seat)
2 Seat cushion 3 Seat back 10 Back frame (frame)
20 Back pad (seat pad)
21 Seating surface 21a Recess 22 Back surface 23 Lower surface 30 Back cover (seat cover)
35 Bottom part 36 Pocket forming part 36c Opening part 36d Pocket part (pocket)
40 Air blower (electrical parts)
41 Wire harness (wiring)
41a Extension part (part of wiring)
F floor (vehicle body)

Claims (2)

A seat pad that is a cushion material and forms the outer shape of the seat; a seat cover that is a skin material that covers the seat pad; a frame that is a skeleton disposed inside the seat pad; and an interior or surface portion of the seat pad. A seat back for a vehicle seat, comprising: an electrical component disposed in contact with the seat back;
Wiring connected to the electrical component is arranged on the back surface of the seat pad opposite to the seating surface,
A pocket formed by partially overlapping the seat cover is disposed in a lower portion of the seat pad that contacts the vehicle body,
A seat back for a vehicle seat, wherein a portion of the wiring is inserted and held in the pocket when the seat back is transported within a factory or between factories. In claim 1, the pocket is provided on both sides of a recess in the seat back to which a center armrest is attached, and has an opening that opens toward the front when the seat back is attached to the vehicle body. Seat backs for vehicle seats.

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