JP3895821B2 - Seat harness wiring structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a harness wiring structure for a seat in which harnesses such as a seat heater and an airbag in a seat back can be pulled out from the side surface of the seat back to the outside without being disconnected.
[0002]
[Prior art]
In general, an automobile seat includes a seat cushion 1 and a seat back 2 as shown in FIG. 9A, and the seat back 2 with respect to the seat cushion 1 as shown in FIG. 9B. Is supported by the first hinge shaft 3 so that it can be reclined.
[0003]
Further, as shown in FIG. 10A, there is a seat (so-called fold-down seat) in which the seat back 2 is supported by the second hinge shaft 4 so as to be able to form a table substantially horizontally.
[0004]
When a seat heater, air bag, lumbar support, etc. are incorporated in the seat back 2, these harnesses, air tubes, wires, etc. (hereinafter referred to as harnesses) 5 are pulled out to the outside and control components Need to connect to.
[0005]
For this reason, as shown in FIG. 10 (B), the harness 5 of the seat back 2 is pulled out from the lower portion of the seat back 2 and wired under the seat cushion 1, or the harness of the seat back 2 The type 5 is pulled out from the back of the seat back 2 and routed through the notch of the seat cushion 1, and a cover that covers the harness 5 is attached to the rear part of the seat back 2 (real fair 1). -8428).
[0006]
[Problems to be solved by the invention]
However, the fold-down seat shown in FIG. 10B that pulls out the harnesses 5 from the back surface of the seat back 2 does not look good, and breaks when the rear seat occupant accidentally pulls the fold-down seat. There is a fear. Further, at the standing position of the seat back 2, the harnesses 5 are loosened and interfere with the seated person of the rear seat.
[0007]
For this reason, it is conceivable that the harnesses 5 are pulled out from the side rather than from the back of the seat back 2, but particularly in a double hinge type fold-down seat, it looks good so that the looseness of the harnesses 3 does not vary. Moreover, it is necessary to devise a new idea for pulling out to avoid disconnection due to bending fatigue or the like.
[0008]
The present invention has been made in order to meet the above-described demand, and allows harnesses such as a seat heater and an air bag in the seat back to be drawn out from the side of the seat back to the outside so as not to break. An object of the present invention is to provide a harness wiring structure for a seat.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is configured such that the seat back is supported by the seat cushion so that the seat back can be reclined by the first hinge shaft of the hinge bracket, and can be tabled by the second hinge shaft of the hinge bracket. On the other hand, harnesses such as seat heaters and airbags in the seat back are pulled out to the outside. The harnesses are pulled out to the outside along the outer surface of the hinge bracket. In addition, the plastic resin protector that holds the harnesses while retaining the slack that can absorb the tension generated by reclining and table formation at the front and rear positions of this locking portion is locked at a position close to each hinge center. This protector has a seatback harness in the middle between the inner and outer ends. The outer end of the hinge bracket overhangs the outer edge of the hinge bracket, bends along the outer surface of the hinge bracket, and the harnesses cross the hinge center of the second hinge shaft. The present invention provides a harness wiring structure for a seat that is guided in the direction of the locking portion .
[0010]
【The invention's effect】
According to the present invention, the harnesses in the seat back are pulled out to the outside along the outer surface of the hinge bracket, and are latched by the locking portion with a slack in the front-rear direction at a position close to each hinge center of the hinge bracket. As a result, the movement of the harnesses associated with the reclining of the seat back and the table formation is reduced, and the bending fatigue is reduced. Therefore, the disconnection is less likely to occur, and the looseness of the harnesses is less likely to vary.
[0011]
In addition, since the protector that protects the harnesses and serves as a guide is attached, the harnesses do not come into direct contact with the sharp outer edge of the hinge bracket. So that the slack is constant.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the same reference numerals are given to the same components and parts as those in the prior art in FIG. 9 and subsequent detailed description.
[0013]
As shown in FIGS. 1 and 3, the upper hinge bracket 7 is supported by the first hinge shaft 3 so as to be able to rotate back and forth on the lower hinge bracket 6 of the seat cushion 1.
[0014]
As shown in detail in FIG. 2, a base bracket 10 is fixed to one side plate 9 of the back frame 8 of the seat back 2 with screws 11, 11. The base bracket 10 has a second hinge shaft 4. The inner end portion is fixed, and a long hole bracket 12 having arc-shaped long holes 12a and 12a centered on the second hinge shaft 4 is fixed with a predetermined gap with respect to the base bracket 10, and fixed. The outer end of the second hinge shaft 4 is fixed to the long hole bracket 12.
[0015]
Between the base bracket 10 and the long hole bracket 12, a support bracket 13 having a center hole 13 a supported by the second hinge shaft 4 so as to be pivotable back and forth is interposed. The inner ends of the support shafts 14 and 14 passing through the long holes 12a and 12a of the long hole bracket 12 are fixed.
[0016]
A stopper pin 23 is fixed between the base bracket 10 and the long hole bracket 12, and a pair of stopper surfaces 13b, 13b are formed on the outer periphery of the support bracket 13, and each of the stopper surfaces 13b. , 13b abuts the stopper pin 23 to regulate the front-rear tilt angle of the seat back 2.
[0017]
A lock lever 25 is rotatably supported by a pin 24 between the base bracket 10 and the long hole bracket 12, and the lock projection 13 c of the support bracket 13 is locked by the lock lever 25, whereby the seat Lock the back 2 in the backward (standing) position. The lock lever 25 is urged in the locking direction by a spring 26a, and a pin 27 fixed to the lock lever 25 engages with the elongated hole 10a of the base bracket 10, so that the rotation angle of the lock lever 25 is restricted. Is done.
[0018]
A release lever 29 is rotatably supported by a pin 28 on the surface of the base bracket 10 on the side plate 9 side. The release lever 29 has a lock lever 25 penetrating through the long hole 10b of the base bracket 10. When the interlocking pin 30 is fixed by the push nut 31 and the release lever 29 is released in the direction of the arrow C, the lock lever 25 is rotated in the unlocking direction, and the lock projection 12b of the long hole bracket 12 is unlocked. Thus, the seat back 2 can be rotated to the forward (table) position. The release lever 29 is urged in the locking direction by the spring 26b, and the rotation angle is regulated by the interlocking pin 30 that passes through the elongated hole 10b of the base bracket 10.
[0019]
As shown in FIG. 1, each side 15 a of the backboard 15 fixed to the back surface of the seatback 2 has each length of the long hole bracket 12 when the long hole bracket 12 is covered from the outside. Elongated holes 15b and 15b through which the support shafts 14 and 14 pass are formed so as to coincide with the holes 12a and 12a, and a screw hole 15c is formed that coincides with the center of the second hinge shaft 4, and this screw The side portion 15a is fixed to the second hinge shaft 4 by inserting the screw 16 from the outside into the hole 15c and screwing it into the outer end portion of the second hinge shaft 4.
[0020]
The screws 17 and 17 are inserted into the screw holes 7a and 7a formed in the upper hinge bracket 7 from the outside and screwed into the outer ends of the support shafts 14 and 14, respectively. Fix to the hinge bracket 7. As a result, the seat back 2 is supported by the second hinge shaft 4 so as to be pivotable back and forth by the upper hinge bracket 7.
[0021]
As shown in detail in FIG. 4, a harness hole 15 d for drawing out harnesses 5 such as a seat heater and an air bag in the seat back 2 continues to the upper hole 15 b on the upper side of the backboard 15. The harnesses 5 that are formed and pulled out from the harness hole 15d are traversed across the hinge center of the second hinge shaft 4 between the screws 17 and 17 along the outer surface of the upper hinge bracket 7. The upper hinge bracket 7 close to the hinge center is locked by band clips 18 and 18 passed through the locking holes 7c and 7c of the rear end protrusion 7b. At the time of this locking, the harnesses 5 are provided with a slack capable of absorbing the tension generated by the clinching or table formation at the front and rear positions of the band clips 18 and 18.
[0022]
As shown in FIG. 5, the harnesses 5 are routed along the outer surface of the lower hinge bracket 6 and similarly locked with a band clip 19 or the like, and connected to a control component.
[0023]
A cover 20 made of synthetic resin that covers the screws 17 and 17 and the harnesses 5 is fixed to the outer surface of the upper hinge bracket 7 with screws 21.
[0024]
With the above configuration, as shown in FIGS. 4A and 5A, the seat back 2 tilts forward and backward (arrow A) at the first hinge shaft 3 of the lower hinge bracket 6 and the upper hinge bracket 7. Can be reclined. Further, as shown in FIGS. 4B and 5B, the seat back 2 is tilted back and forth (see arrow B) between the upper hinge bracket 7 and the second hinge shaft 4 of the seat back 2 to form a table. it can.
[0025]
As the seat back 2 is reclined and made into a table, the harnesses 5 are pulled and moved. The harnesses 5 are placed in the locking holes 7c and 7c of the upper hinge bracket 7 near the hinge shafts 3 and 4, respectively. Since the clips 18 and 18 are locked with slack in the front-rear direction, the harness 5 is less moved when the seat back 2 is reclined or made into a table, and bending fatigue is reduced, so that disconnection hardly occurs. In addition, since the looseness of the front and rear positions of the locking portions of the harnesses 5 is less likely to vary, the appearance is also improved. Furthermore, since the harnesses 5 can be covered by attaching the cover 20 to the outer surface of the upper hinge bracket 7, the appearance is further improved.
[0026]
4A and 4B, when the harness 5 is pulled out from the harness hole 15d of the long hole 15b of the backboard 15, the seat back 2 is tilted forward and backward by the second hinge shaft 4. If it does, there exists a possibility that the harnesses 5 may contact the outer edge 7d of the upper hinge bracket 7, and may be disconnected.
[0027]
Therefore, as shown in FIGS. 6 and 7, a split pipe-shaped synthetic resin protector 35 in which the inner end portion 35 a is bent backward and the outer end portion 35 b is bent downward is provided. The harnesses 5 are accommodated, the intermediate portion 35c of the protector 35 is passed through the hole 9a of the side plate 9 of the back frame 8 corresponding to the harness hole 15d of the backboard 15, and the flange portion 35d of the intermediate portion 35c is inserted. The side plate 9 is fixed with screws 36.
[0028]
The outer end 35b of the protector 35 overhangs the outer edge 7d of the upper hinge bracket 7, bends along the outer surface of the upper hinge bracket 7, and harnesses 5 in the direction of the locking holes 7c and 7c. Is set to guide.
[0029]
If it is said structure, since it will be protected by the protector 35 and the harnesses 5 will not contact the sharp outer edge 7d of the bracket 7 directly, it will become difficult to disconnect, and the harnesses 5 will be engaged by the outer end part 35b. Since it is guided accurately in the direction of the blind holes 7c, 7c, the slackness is constant.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a harness routing structure according to the present invention.
FIG. 2 is an exploded perspective view of a double hinge structure of a seat back.
FIG. 3 is a perspective view of a main part of a double hinge structure.
4A and 4B are main portions of the seat back, in which FIG. 4A is a perspective view of a standing position, and FIG. 4B is a perspective view of a forward (table) position.
5A is a perspective view of an upright position, and FIG. 5B is a perspective view of a forward (table) position. FIG.
FIG. 6 is a perspective view of a seat back frame to which a protector is fixed.
FIG. 7 is an exploded perspective view of the protector.
8A and 8B are main parts of a seat back having a protector, in which FIG. 8A is a perspective view of a standing position, and FIG.
9A is a side view of a standing position, and FIG. 9B is a side view of a reclining position.
10A is a side view of the table position, and FIG. 10B is a perspective view of the table position.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Seat back 3 1st hinge axis | shaft 4 2nd hinge axis | shaft 5 Harnesses 6,7 Hinge bracket 7c Locking hole 8 Back frame 10 Base bracket 12 Long hole bracket 13 Support axis bracket 14 Support axis 15 Back board 15b Long Hole 15d Harness hole 20 Cover 35 Protector 35b Outer edge

Claims (1)

The seat back is supported by the seat cushion so that it can be reclined by the first hinge shaft of the hinge bracket, and supported by the second hinge shaft of the hinge bracket so that it can be tabled. And those that pull out harnesses such as airbags to the outside,
The above harnesses are pulled out along the outer surface of the hinge bracket, locked to the outer surface of the hinge bracket at a position close to each hinge center, and are generated by reclining or table formation at the front and rear positions of the locking portion. A synthetic resin protector that accommodates harnesses is provided, and the protector is provided with an intermediate portion between the inner end portion and the outer end portion as a seat back harness pull-out portion. The outer end overhangs the outer edge of the hinge bracket, bends along the outer surface of the hinge bracket, and the harnesses cross the hinge center of the second hinge shaft while the outer end of the locking portion is fixed. Seat harness wiring structure characterized by guiding in the direction .

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