JPH08242968A - Support structure for cord in sheet - Google Patents

Abstract

(57) [Summary] [Purpose] A main object of the present invention is to fix a cord-like body of a seat cushion to the seat side by a simple operation and not to increase the number of parts. [Structure] The height adjuster mechanism 25 of the seat cushion 11 is provided with a torsion bar 40. The torsion bar 40 generates a torque that biases the seat cushion 11 upward. A bending portion 60 is provided at an axially intermediate portion of the torsion bar 40.
The harness 80 is passed through 0. A support portion 61 that receives the harness 80 is provided below the bending portion 60, and the support portion 61 supports the harness 80 so that it does not hang down. The torque of the torsion bar 40 can be adjusted by appropriately changing the number and shape of the bent portions 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a cord-like body suitable for mounting a cord-like body such as a harness for electrical equipment on a vehicle seat such as an automobile.

[0002]

2. Description of the Related Art When an electric component is mounted on a vehicle seat, a harness of the electric component is used to supply electric power to the electric component or to send and receive an electric signal for controlling a unique function of the electric component. It is necessary to connect to the harness on the vehicle body side.
As an example of such electrical equipment, in a seatbelt buckle built-in seat, a switch (seatbelt warning switch) for detecting that a tongue is inserted in the seatbelt buckle is provided to check whether or not the seatbelt is properly worn. There is a device which can display the information of the above on a seat belt indicator arranged on the instrument panel or the like.

For example, in a conventional seat 1 shown in FIG. 9, a harness 3 of a seat belt warning switch built in a seat belt buckle 2 is arranged along a bottom portion of a seat cushion 4 and illustrated via a connector 5. Not to be connected to the harness on the vehicle body side. In this case, in order to prevent the harness 3 from being caught in each part of the seat, the middle portion in the length direction of the harness 3 is fixed to the seat frame 7 by the clip 6.

When the seat frame 7 has a pan shape (cushion pan), the conventional clip 6 has a portion 6a inserted into a mounting hole 8 formed in the seat frame 7, as shown in FIG. And a portion 6b through which the harness 3 passes. Further, instead of using the clip 6, the harness 3 may be fixed to the seat side by using a band-shaped binding tool attached to a part of the spring of the seat cushion or the like.

[0005]

The work of fixing the harness 3 to the seat frame 7 by using the clip 6 and the tying tool requires a lot of man-hours and labor, and when the clip 6 is used, the mounting hole 8 is formed in the seat frame 7. Processing is required to form the. In addition, a plurality of clips 6 or a plurality of binders are required to realize reliable fixing, which causes an increase in the number of parts and an increase in cost. In addition, there is room for improvement in that the attachment position of the binding may vary depending on the operator.

On the other hand, conventionally, in order to be able to adjust the height of the seat cushion, for example, an actual open flat 4-11
A seat provided with a height adjuster mechanism as described in Japanese Patent No. 6232 is provided. This height adjuster mechanism is provided with a torsion bar that urges the seat cushion in a direction to raise the seat cushion, and exerts an auxiliary force for pushing up the seat cushion when adjusting the height of the seat cushion.

In a seat provided with such a torsion bar, when it is necessary to change the magnitude of the torque of the torsion bar according to the specifications of the height adjuster mechanism, the wire diameter, material, mounting position, etc. of the torsion bar are changed. Need to change. For this reason, the number of types of parts increases, such as having to prepare a plurality of types of torsion bars and parts for attaching torsion bars, which causes an increase in cost.

Therefore, it is an object of the present invention to utilize a torsion bar mounted on a seat cushion to support a cord or the like such as a harness at a predetermined position on the seat side by a simple operation, and yet to provide a torsion bar. It is an object of the present invention to provide a support structure for a cord in a seat in which the characteristics such as torque can be adjusted without changing the material.

[0009]

A cord-shaped support structure of the present invention developed to achieve the above object is a torsion bar provided on a seat cushion and a cord arranged on the seat cushion. In the seat having, a bending portion is provided at an axially intermediate portion of the torsion bar, and the cord is passed through the bending portion so that the cord is supported by the torsion bar.

The cord is, for example, a harness for a seat belt warning switch, but it is also used for harnesses of electrical equipment having various other functions, wires such as Bowden wire for force transmission, and a tube for air piping. In short, the cord is a cord-shaped member provided on the sheet, and its type does not matter.

[0011]

In the above seat, a cord-like member such as a harness is passed through the bent portion of the torsion bar, and the cord-shaped member is received by the support portion of the bent portion so that the cord-shaped member is held at a predetermined position on the seat cushion side. To be done. The work of passing the cord through the bent portion can be performed easily and in a short time.

Further, in the above-mentioned torsion bar, the magnitude of torque can be changed according to the number of bent portions and the shape or size of the bent portions, and the material, wire diameter or mounting position of the torsion bar can be adjusted when adjusting the torque. There is no need to change etc. Therefore, even if the required characteristics of the torsion bar are changed due to a change in the specifications of the height adjuster mechanism or the like, a common torsion bar material, mounting parts, etc. can be used, and it is possible to deal with them without changing the mounting position. The cost can also be reduced by using common parts.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. An example of the vehicle seat 10 shown in FIG. 4 is a seat cushion 1 on which an occupant is seated.
1, a seat back (backrest portion) 12, a seat belt buckle 13 and the like. FIG. 5 is a plan view of the seat cushion 11 seen from above.

The seat cushion 11 includes a seat frame 15, a pad 16 provided on the seat frame 15, and the like, as in the conventional seat. The pad 16 is mainly made of an elastic synthetic resin such as urethane foam, and is covered with a skin 17.

The seat frame 15 is supported on the upper rail 21 of the seat slide mechanism 20 by a front height adjuster mechanism 25 and a rear height adjuster mechanism 26 so as to be able to move up and down. The upper rail 21 is
It can move in the front-rear direction along the lower rail 28 fixed to the floor side of the vehicle body, and can be fixed in a desired position in the front-rear direction by a lock mechanism (not shown).

Although the front height adjuster mechanism 25 is not limited to the illustrated example, for example, as shown in FIG. 1, a rod 30 extending in the horizontal direction, a sector gear 31 fixed to one end of the rod 30, and a sector gear 31 are provided. A pinion gear 32 that meshes with the first gear 35, a first link 35 that supports the sector gear 31, a lever 36 that is fixed to the rod 30, a bracket 37 that is fixed to the seat frame 15, and an arm provided at the other end of the rod 30. 38, a second link 39 that supports the arm 38, a torsion bar 40 provided along the rod 30, and the like.

Both ends of the rod 30 are rotatably supported by the seat frame 15. The pinion gear 32 can be rotated in both forward and reverse directions by a drive mechanism 45 that uses a motor or a manual lever as a drive source. The lower end of the first link 35 and the lower end of the second link 39 are supported by members on the upper rail 21 side so as to be swingable in the front-rear direction.

The torsion bar 40 is made of well-known spring steel, and has a body portion 50 to which a torsional load is applied, and a body portion 50.
A first end (fixed end) 51 located on one end side of the main body 5
The second end 52 located on the other end side of 0 is provided. The main body 50 extends horizontally along the rod 30. The first end 51 of the torsion bar 40 is bent in a U shape and fixed to the bracket 37. The second end 52 is also bent in a U shape and is locked to the lever 36 in a twisted state of the main body 50 so that a torque for rotating the rod 30 in the direction of arrow R in FIG. 1 is generated.

A bending portion 60 is provided at an axially intermediate portion of the body portion 50 of the torsion bar 40. As shown in FIGS. 2 and 3, the bent portion 60 is formed by spirally looping a part of the main body 50 of the torsion bar 40 around the axis. Therefore, the bent portion 60 has an arc shape, and a support portion 61 curved in an arc shape is formed below the bent portion 60. The number of turns of the bent portion 60 in the illustrated example is 1
Although the number of turns is about one, the number of turns may be one or less, or one or more depending on characteristics such as required torque.

The height adjuster mechanism 25 rotates the pinion gear 32 to rotate the sector gear 31.
When is rotated clockwise or counterclockwise, the rod 30 and the arm 3 are moved in the same direction as the sector gear 31.
8 rotates. In this case, since the lower ends of the links 35 and 39 are supported by the member on the upper rail 21 side, when the sector gear 31 and the arm 38 rotate in the arrow R direction in FIG. 1, the rod 30 moves in the ascending direction. Due to
The front part of the seat cushion 11 rises.

Since the rod 30 is always urged in the direction of arrow R by the torque generated by the torsion bar 40, the seat cushion 1 is operated when the above-described raising operation is performed.
Auxiliary force in the direction of increasing 1 is exerted. Therefore, the raising operation becomes easy. When the pinion gear 32 is rotated in the opposite direction to the above, the sector gear 31 and the arm 38 rotate in the opposite direction, so that the rod 30 moves in the descending direction, so that the front portion of the seat cushion 11 descends.

The height adjuster mechanism 26 on the rear side is provided.
Also has a rod 65 and a torsion bar 66 similar to the rod 30 and the torsion bar 40 of the height adjuster mechanism 25 described above.
In principle, the rear side height of the seat cushion 11 can be adjusted separately from the front height adjuster mechanism 25 by the same configuration and operation.

Anchor portion 7 of the seat belt buckle 13
0 is fixed to a member on the seat frame 15 side,
The tongue 73 of the seat belt 72 is detachably attached to the buckle body 71. The buckle body 71 has a built-in seat belt warning switch 75, which is an example of electrical equipment, so that when the tongue 73 is inserted into a predetermined position of the buckle body 71, the seat belt warning switch 75 performs a switch function. Has become.

The seat belt warning switch 75
The harness 80 is guided to the front of the seat 10 through the bottom portion of the seat cushion 11. The harness 80 is an example of a cord. The connector 8 is attached to the tip of the harness 80.
1 is provided. The connector 81 is connected to a harness (not shown) on the vehicle body side.

As shown in FIG. 1 and the like, the harness 80 is passed through the bending portion 60 of the torsion bar 40 and is supported by the supporting portion 61 of the bending portion 60 so as not to hang down. In this way, the harness 80 can be supported on the seat cushion 11 side only by passing the harness 80 through the bent portion 60. Moreover, since the harness 80 is not rigidly fixed so as to prevent the rotation of the torsion bar 40 but is supported in a state in which it can move to some extent, even if the harness 80 is supported by the torsion bar 40, the torsion action of the torsion bar 40 does not occur. It has no effect.

According to the support structure of the harness 80 using the torsion bar 40 having the above structure, it is not necessary to separately use a harness fixing component such as a clip for fixing the harness 80 to the seat frame 15. That is, the harness 80 can be supported by using the torsion bar 40 of the height adjuster mechanism 25, the utility value of the torsion bar 40 can be increased, the number of parts can be reduced, and the number of mounting steps can be reduced to contribute to cost reduction.

Moreover, since the torsion bar 40 is provided with the bending portion 60, the flexibility (spring constant) of the main body portion 50 is changed, so that the magnitude of the torque can be changed according to the mode of the bending portion 60. Can be set. For example, when the bent portion 60 is provided at one place, the torque characteristic shown by the one-dot chain line B in FIG. 6 is obtained, and the torque can be reduced as compared with the characteristic A when the bent portion 60 is not provided. . Further, when the bending portion 60 is provided at two places as shown in FIG. 7, the torque can be further reduced as shown by the broken line C in FIG.

That is, in the height adjuster mechanism 25 having the torsion bar 40, the material, wire diameter, mounting pitch, etc. of the torsion bar 40 are changed by changing the number of bent portions 60, the shape and size of the bent portions 60, and the like. It is possible to adjust the magnitude of torque without
No change is required to the mounting parts of the torsion bar 40, such as 8 and the bracket 37.

The bent portion 60 is not limited to the spiral loop. For example, a part of the main body 50 of the torsion bar 40 may be bent into a V shape or a U shape.
Alternatively, as in the modification of the torsion bar 40 shown in FIG. 8, the harness 80 is prevented from slipping out of the bent portion 60 by looping the bent portion 60 a plurality of times in a spiral shape and passing the harness 80 through the loop. You may In short, the bent portion 60 may be one that can support the cord 80 such that the cord 80 is passed through. Further, the bent portion 60 may be provided on the torsion bar 66 of the rear height adjuster mechanism 26.

[0030]

According to the present invention, a cord such as a harness can be supported at a predetermined position on the seat cushion side by utilizing a torsion bar, and the seat cushion can be moved when adjusting the position of the seat. Even in this case, it is possible to prevent the cord-like body from being caught in the sheet. The present invention does not require a separate fixing component such as a clip for supporting the cord-shaped body, and the cord-shaped body can be easily arranged, which reduces the number of mounting steps and the cost. It has a great effect.

Further, the characteristics such as the torque of the torsion bar can be changed by changing the shape of the bent portion and the number of bent portions of the torsion bar.
It is possible to cope with changes in required characteristics such as torque without changing the wire diameter, material, or mounting position of the torsion bar.

[Brief description of drawings]

FIG. 1 is a perspective view of a part of a seat showing an embodiment of the present invention.

FIG. 2 is a perspective view of a torsion bar and cords in the seat shown in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a perspective view of a seat including a seat belt buckle.

5 is a plan view of a seat cushion of the seat shown in FIG.

FIG. 6 is a diagram showing a relationship between a rotation angle of a torsion bar and torque.

FIG. 7 is a perspective view showing a modified example of the torsion bar.

FIG. 8 is a perspective view showing still another modification of the torsion bar.

FIG. 9 is a plan view of a seat cushion using a conventional harness fixing clip.

10 is a sectional view taken along the line aa in FIG.

[Explanation of symbols]

 10 ... Seat 11 ... Seat Cushion 25 ... Height Adjuster Mechanism 40 ... Torsion Bar 60 ... Bend 61 ... Support 80 ... Harness

Claims (4)

[Claims] 1. A seat having a torsion bar provided on a seat cushion and a cord-shaped member arranged on the seat cushion, wherein a bending portion is provided at an intermediate portion in the axial direction of the torsion bar, and the bending portion is provided. A support structure for a cord in a sheet, wherein the cord is supported by a torsion bar by passing the cord. 2. The support structure for a cord-like body according to claim 1, wherein the bent portion is formed in an arc shape, and a support portion for supporting the cord-shaped body is provided below the bent portion. 3. The cord supporting structure according to claim 1, wherein the cord is a harness of electrical equipment mounted on a seat. 4. The seat is provided with a height adjuster mechanism capable of adjusting the height of the seat cushion, and the height adjuster mechanism is provided with a torsion bar for urging the seat cushion upward. The bent portion is provided in the
A supporting structure for a cord as described.