Back pad and seat back

Abstract

To suppress insertion of a crewman's finger into a clearance between an operation lever member and a trim cover.SOLUTION: In a back pad 24, an opening 26, in which an operation lever member 36 that is provided at a shoulder of a seat back 14R and is fixed to a seat back frame 20 is inserted and located, is formed. Between a marginal part of the opening 26 and the operation lever member 36, a terminal part of a trim cover 28 for the seat back 14R is located. An insert wire 46 is embedded in the marginal part of the opening 26.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a seat back of a vehicle seat and a back pad constituting a cushion material thereof.

Background Art

[0002] The mounting structure of the skin material disclosed in Patent Document 1 below constitutes a cushion material of a seat back of a vehicle seat, and includes a back pad formed with an opening and a slit, a trim cover covering the surface of the back pad and formed with a flap accommodated in the slit, and an operation lever member inserted into the opening in a state where the flap is accommodated in the slit and fixed to a frame of the seat back to press the back pad. Thereby, the skin material is fixed with a simple configuration having a small number of parts.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above prior art, for example, when a passenger touches the periphery of the operation lever member, the back pad is recessed, so that a gap is generated between the operation lever member and the trim cover, and there is a risk that the passenger may insert a finger into the gap.

[0005] In consideration of the above facts, an object of the present invention is to obtain a back pad and a seat back capable of suppressing a passenger from inserting a finger into a gap between an operation lever member and a trim cover.

Means for Solving the Problems

[0006] The back pad according to the first aspect is a back pad that constitutes a cushioning material for the seat back of a vehicle seat, and an opening is formed in the shoulder area of the seat back for inserting and arranging an operation lever member that is provided at the shoulder of the seat back and fixed to the frame of the seat back. The terminal portion of the trim cover of the seat back is disposed between the edge of the opening and the operation lever member, and the back pad has an insert wire embedded in the edge of the opening.

[0007] The back pad according to the first aspect constitutes a cushioning material for the seat back of a vehicle seat. In this back pad, an opening is formed for inserting and arranging an operation lever member that is provided at the shoulder of the seat back and fixed to the frame of the seat back. The terminal portion of the trim cover of the seat back is disposed between the edge of the opening and the operation lever member. Since an insert wire is embedded in the edge of the opening, it is difficult for the back pad to be indented when a passenger touches the periphery of the operation lever member. As a result, it is possible to suppress the occurrence of a gap between the operation lever member and the trim cover, and it is possible to prevent the passenger from inserting a finger into the gap.

[0008] In the back pad according to the second aspect, in the first aspect, the insert wire has a trim locking portion to which the terminal portion of the trim cover is locked using a locking tool.

[0009] In the back pad according to the second aspect, the terminal portion of the trim cover is locked to the trim locking portion of the insert wire embedded in the edge of the opening using a locking tool. This makes it possible to prevent the terminal portion of the trim cover from coming out between the edge of the opening and the operation lever member when the trim cover is pulled by a passenger.

[0010] The seat back according to the third aspect includes a frame, the back pad according to the first aspect or the second aspect attached to the frame, a trim cover covering the back pad, and an operation lever member inserted and arranged in the opening of the back pad and fixed to the frame.

[0011] In the seat back of the third aspect, a trim cover is placed over a back pad attached to a frame, and an operation lever member inserted and disposed in an opening of the back pad is fixed to the frame. Since the above-described back pad is of the first aspect or the second aspect, the above-described effects can be obtained.

Effects of the Invention

[0012] As described above, in the back pad and the seat back according to the present invention, it is possible to prevent a passenger from inserting a finger into the gap between the operation lever member and the trim cover.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0014] Hereinafter, a seat back 14 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. In each figure, some reference numerals may be omitted for ease of viewing the drawings. Also, the arrows FR, LH, and UP appropriately shown in each figure indicate the front, left, and upper directions of a vehicle seat 10 provided with the seat back 14, respectively. Hereinafter, when simply using the directions of front, rear, left, right, up, and down for explanation, it shall indicate the directions with respect to the vehicle seat 10.

[0015] As shown in FIG. 1, the vehicle seat 10 is a three-person split-foldable rear seat, and includes a seat cushion 12 on which an occupant sits, a seat back 14 that supports the occupant's back, and three headrests 16 that support the occupant's head. The seat back 14 is divided into a right seat back 14R for two persons and a left seat back 14L for one person. The right seat back 14R and the left seat back 14L are each connected to the floor of the vehicle body via a hinge bracket 18 and are capable of being folded forward onto the seat cushion 12.

[0016] As shown in FIGS. 1 to 3, the left and right seat backs 14 include a back frame 20 (not shown except in FIG. 3) which is a frame, a back pad 24 which is a cushion material, and a trim cover 28 which is a skin. The back frame 20 is composed of, for example, a press-formed metal plate material or a metal pipe material, and is connected to the floor of the vehicle body via the hinge bracket 18 described above.

[0017] The back pad 24 is composed of, for example, a foam such as urethane foam, and is attached to the back frame 20. This back pad 24 has a rectangular shape when viewed from the front-rear direction of the seat back 14 and has a substantially rectangular plate shape with the front-rear direction of the seat back 14 as the thickness direction. The trim cover 28 is formed in a bag shape by sewing a plurality of skin pieces made of, for example, a cloth material, leather, synthetic leather, etc., and is covered on the back pad 24.

[0018] On the left and right seatbacks 14R and 14L, there are lock devices 32 for restraining the left and right seatbacks 14R and 14L to the side part of the vehicle body (the position shown in FIG. 1; hereinafter referred to as the "upright position") in the upright position. The lock device 32 has a lock body 34 provided on the outer side part in the left-right direction of the left and right seatbacks 14R and 14L, and an operation lever member 36 provided at the shoulder openings on the outer side in the left-right direction of the left and right seatbacks 14R and 14L. The lock body 34 has a latch (not shown) that engages with a striker (not shown) provided on the side part of the vehicle body. By this engagement, the left and right seatbacks 14R and 14L are restrained in the upright position.

[0019] In addition, since the configuration around the lock device 32 in the left and right seatbacks 14R and 14L is basically the same except that it is symmetrically configured, hereinafter, the configuration of the right seatback 14R shown in FIGS. 2 to 4 will be described, and the description of the configuration of the left seatback 14L will be omitted. Also, hereinafter, when using the directions of front-back, left-right, and up-down for description, it shall indicate the directions in the state where the seatback 14R is in the upright position.

[0020] The operation lever member 36 has a case 38 fixed to the back frame 20 of the seatback 14R, an escutcheon 40 attached to the upper end of the case 38, and a lever 42 rotatably attached to the case 38. The case 38, the escutcheon 40, and the lever 42 are manufactured by, for example, injection molding of resin.

[0021] As shown in FIG. 3, the back frame 20 of the seatback 14R has a bracket 22 for fixing the case 38. This bracket 22 is composed of, for example, a metal plate formed by press molding. A hole 23 into which the case 38 is inserted is formed in this bracket 22, and the case 38 is fixed to the bracket 22 by means such as claw fitting.

[0022] The escutcheon 40 is disposed exposed on the upper surface of the seat back 14R and is fixed to the upper end portion of the case 38 by means such as claw fitting. The lever 42 is rotatably attached to the case 38 about an axis along the left - right direction and is connected to the lock body 34 via a cable, link, etc. (not shown). This lever 42 has an operation portion 42A disposed exposed on the upper surface of the seat back 14R. When the occupant operates this operation portion 42A to rotate the lever 42, the latch of the lock body 34 rotates, and the engagement of the latch with the striker on the vehicle body side portion is released. Thereby, the seat back 14R can be reclined forward.

[0023] As shown in FIGS. 3 to 5, an upper wall portion 24A extending rearward is provided at the upper end portion of the back pad 24, and the case 38 of the operation lever member 36 is inserted and disposed in an opening 26 formed in the upper wall portion 24A. This opening 26 penetrates the upper wall portion 24A in the vertical direction and is open at the rear side. The escutcheon 40 of the operation lever member 36 is pressed against the edge portion of the opening 26 of the back pad 24 from above.

[0024] As shown in FIG. 3, the terminal portion 28A of the trim cover 28 is wound around the edge portion of the opening 26 of the back pad 24. This terminal portion 28A is composed of a left winding portion 28A1 wound around the left edge portion of the opening 26, a right winding portion 28A2 wound around the right edge portion of the opening 26, and a front winding portion (not shown) wound around the front edge portion of the opening 26.

[0025] The left winding part 28A1 is sandwiched between the left edge part of the opening 26 and the operation lever member 36, and extends leftward on the lower surface side of the upper wall part 24A. The right winding part 28A2 is sandwiched between the right edge part of the opening 26 and the operation lever member 36, and extends rightward on the lower surface side of the upper wall part 24A. The front winding part is sandwiched between the front edge part of the opening 26 and the operation lever member 36. Trim cords 30 are attached to the tip parts of the left winding part 28A1 and the right winding part 28A2. The trim cords 30 are formed in a substantially plate shape by, for example, a resin material, and are attached to the left winding part 28A1 and the right winding part 28A2 by means such as sewing.

[0026] An insert wire 46 is embedded in the edge part of the opening 26 of the back pad 24. The insert wire 46 is formed by bending a metal wire. The insert wire 46 has a front reinforcing part 46A extending in the left - right direction along the front edge part of the opening 26, a left reinforcing part 46B extending rearward from the left end part of the front reinforcing part 46A and extending in the front - rear direction along the left edge part of the opening 26, and a right reinforcing part 46C extending rearward from the right end part of the front reinforcing part 46A and extending in the front - rear direction along the right edge part of the opening 26.

[0027] Furthermore, the insert wire 46 has a left extending part 46D obliquely extending leftward and downward from the rear end part of the left reinforcing part 46B, a right extending part 46E obliquely extending rightward and downward from the rear end part of the right reinforcing part 46C, a left trim locking part 46F extending forward from the tip of the left extending part 46D, and a right trim locking part 46G extending forward from the tip of the right extending part 46E. The tip parts (front end parts) of the left trim locking part 46F and the right trim locking part 46G are bent into a substantially U - shaped bent part 46F1, 46G1. The left trim locking part 46F and the right trim locking part 46G both correspond to the "trim locking part" in the present invention.

[0028] The left trim locking portion 46F and the right trim locking portion 46G are disposed near the lower surface of the upper wall portion 24A of the back pad 24. A trim cord 30 attached to the tip of the left winding portion 28A1 at the terminal portion 28A of the trim cover 28 is locked to the left trim locking portion 46F using a hog ring 48. Similarly, a trim cord 30 attached to the tip of the right winding portion 28A2 at the terminal portion 28A of the trim cover 28 is locked to the right trim locking portion 46G using a hog ring 48. The above-mentioned hog ring 48 corresponds to the "locking tool" in the present invention. Note that the locking tool in the present invention is not limited to the hog ring 48. For example, a so-called J-hook formed in a J-shaped cross section by a resin material may be used as the locking tool. In FIG. 5, the illustration of the trim cover 28 is omitted.

[0029] In the seat back 14R of the vehicle seat 10 having the above configuration, the trim cover 28 is placed over the back pad 24 attached to the back frame 20. An opening 26 is formed in the back pad 24, into which an operation lever member 36 provided at the shoulder of the seat back 14R and fixed to the back frame 20 is inserted and disposed. The terminal portion 28A of the trim cover 28 of the seat back 14R is disposed between the edge of the opening 26 and the operation lever member 36.

[0030] Since the insert wire 46 is embedded in the edge of the above-mentioned opening 26, the shape reproducibility during the foam molding of the back pad 24 is improved, and it is difficult for a gap to occur between the operation lever member 36 and the trim cover 28. Moreover, since the edge of the opening 26 in the back pad 24 is reinforced by the insert wire 46, it is difficult for the edge of the opening 26 to be dented when the occupant touches the periphery of the operation lever member 36. As a result, it is possible to suppress the occurrence of a gap between the operation lever member 36 and the trim cover 28 due to the dent, and it is possible to prevent the occupant from inserting a finger into the gap.

[0031] Further, in the present embodiment, an insert wire 46 embedded in the edge of the opening 26 of the back pad 24 has a left trim locking portion 46F and a right trim locking portion 46G. A trim cord 30 attached to the tip of the left winding portion 28A1 at the terminal portion 28A of the trim cover 28 is locked to the left trim locking portion 46F using a hog ring 48. Similarly, a trim cord 30 attached to the tip of the right winding portion 28A2 at the terminal portion 28A of the trim cover 28 is locked to the right trim locking portion 46G using a hog ring 48. This makes it possible to prevent the terminal portion 28A of the trim cover 28 from coming out between the edge of the opening 26 and the operation lever member 36 when the trim cover 28 is pulled by the occupant.

[0032] In the above embodiment, the terminal portion 28A of the trim cover 28 is locked to the left trim locking portion 46F and the right trim locking portion 46G of the insert wire 46. However, the present invention is not limited to this, and the terminal portion of the trim cover may not be locked to the trim locking portion of the insert wire.

[0033] In the above embodiment, the seat back 14 is configured to be divided into left and right seat backs 14L and 14R. However, the present invention is not limited to this, and the seat back 14 may not be divided into left and right.

[0034] In addition, the present invention can be implemented with various modifications without departing from the gist thereof. Of course, the scope of the rights of the present invention is not limited to the above embodiment.

Explanation of Reference Numerals

[0035] 10 Vehicle seat 14 Seat back 20 Back frame (frame) 24 Back pad 26 Opening 28 Trim cover 28A Terminal portion 36 Operation lever member 46 Insert wire 46F Left trim locking part (trim locking part) 46G Right trim locking part (trim locking part) 48 Hog ring (fastener)

Claims

1. A back pad that constitutes a cushioning material for a seat back of a vehicle seat, an opening is formed in the shoulder portion of the seat back for inserting and arranging an operation lever member fixed to the frame of the seat back, a terminal portion of a trim cover of the seat back is disposed between an edge portion of the opening and the operation lever member, a back pad having an insert wire embedded in an edge portion of the opening.

2. The back pad according to claim 1, wherein the insert wire has a trim locking portion to which a terminal portion of the trim cover is locked using a locking tool.

3. A frame, the back pad according to claim 1 or claim 2 attached to the frame, a trim cover covering the back pad, an operation lever member inserted and arranged in the opening of the back pad and fixed to the frame, and a seat back provided with the same.

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