JPH11342807A - Method for preventing sagging of flexible flat cable in power supply device for sliding door for automobile, and structure for preventing sagging of flexible flat cable - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Even if a flexible flat cable in a power supply device for a sliding door for an automobile becomes long or a space between an end portion and a bent portion is wide, a flexible flat cable is surely provided. -To provide a sagging prevention method and a sagging prevention structure capable of preventing sagging of a cable. SOLUTION: In a power supply device 31 of a sliding door for an automobile, a structure for preventing the flexible flat cables 25 from hanging down includes a slider rail 33 constituting the power supply device 31 and a slider rail 3 of the power supply device 31.
Bending auxiliary plate 3 attached to flexible flat cables 25, 25 as circuit bodies that are bent and housed within 3
4 is provided with a magnetized portion 32 for generating a magnetic force, and the slider rail 33 and the auxiliary bending plate 34 are brought into contact with and held through the magnetized portion 32 to thereby provide a slider rail 33.
The flexible flat cable 25, 25 has a structure for preventing the cable from hanging down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a structure for preventing a circuit body disposed between a vehicle body and a slide door of a power supply device for a slide door for a vehicle from hanging, and more particularly, to a method of bending and accommodating the circuit body in a slider rail. The present invention relates to a method and a structure for preventing a flexible flat cable from hanging down.

[0002]

2. Description of the Related Art FIGS. 9 to 11 show a power supply device for a sliding door for an automobile, which was previously filed by the present applicant in Japanese Patent Application No. 10-94708. Hereinafter, the power supply device will be described. 9 and 10, reference numeral 1 denotes a body of a high-roof type automobile, and reference numeral 2 denotes a slide door of the high-roof type automobile. Reference numeral 3 denotes a power supply device for an automobile slide door interposed between the vehicle body 1 and the slide door 2.

The vehicle body 1 has a doorway 5 formed substantially at the center of the vehicle body side wall 4, and a step 6 is formed below the doorway 5. Further, a floor surface 7 in the vehicle interior is provided above the step 6.

Further, below the step 6, a slide door 2 is provided via a hinge roller portion 8 comprising a hinge body 8a (see FIG. 10) and a roller portion 8b (see FIG. 10) provided on the slide door 2. (Not shown) for moving the vehicle so that it can be slidably opened and closed in the front-rear direction of the vehicle body 1
Is provided with a predetermined length.

The power supply device 3 is provided with a rail-shaped slider rail 9 provided on the slide door 2, a slider 10 movably held by the slider rail 9, and bends and stretches in conjunction with the movement of the slide door 2. Rotating shaft 11 serving as one end
a is the vehicle body 1 and the other end of the rotating shaft 11b is the slider 1
And a flexible arm 11 rotatably attached to the first arm 0, and one end 12a is connected to the vehicle body side harness 13 and the other end 12b is connected to the slide door side harness 14 through the inside of the flexible arm 11. Circuit 12 (see FIGS. 10 and 11)
Reference).

The slider rail 9 is fixed to a panel 15 of the slide door 2, and has a hollow portion 16 for the circuit body 12 and a rail portion 17 for the slider 10, as shown in FIG. A terminal block 18 having an outlet 18a for the other end 12b side of the circuit body 12 is provided at one end 16a of the hollow portion 16, and a terminal block serving also to prevent the circuit body 12 from protruding at the other end 16b. 19 are similarly provided. A seat 20 is formed in the terminal block 18.

The slider 10 is provided with three rollers 21 for rolling on the rail 17 on both sides of the main body 10a. In addition, a seat 2 is provided above the main body 10a.
2, a flexible arm 1 is provided at a lower portion of the main body 10a.
One rotation shaft 11b is attached.

As shown in FIG. 9, the flexible arm 11
It is a tubular body which bends and stretches in conjunction with the movement of the slide door 2 and in which a circuit body 12 (see FIG. 10) is routed. The rotating shafts 11a and 11b provided at both ends, and the rotating shafts 11a and 11b, a relatively flexible outer tube 23 made of synthetic resin or synthetic rubber (see FIG. 10), and a flexible inner tube also made of synthetic resin or synthetic rubber (inside the outer tube 23). And not shown), and the outer tube 2
A metal mesh (not shown) is mounted between the inner tube 3 and the inner tube (not shown).

As shown in FIGS. 10 and 11, the circuit body 12 is routed between the vehicle body 1 and the slide door 2 via the inside of the flexible arm 11 and the slider rail 9, and is connected to the vehicle body side harness 13. Harness 24, two flexible flat cables 25, 25 (see FIG. 11) bent and housed in the slider rail 9, and a lead-out port 18a of the terminal block 18, which is connected to the slide door side harness 14. And a harness 26 connected to
Both ends of the flexible flat cables 25, the harness 24 and the harness 26 are connected to the connector 27 and the slider rail 9 provided on the seat 22 of the slider 10.
Are connected by a connector 28 provided on the terminal block 18.

[0010] Flexible flat cable 25,
25, the seat 20 of the slider rail 9 and the slider 10
And a thin plate-shaped bending auxiliary plate 29 made of synthetic resin or convex with both ends screwed and fixed to the seat portion 22 (in the case of convex, usually, it has a half-moon-shaped cross section). Has been formed). This bending assist plate 29
Is flexible, and moves with the flexible flat cables 25, 25 while changing the bending position with the movement of the slider 10.

[0011]

In the above prior art, as shown in FIG. 11, a flexible flat cable 25 is provided in a slider rail 9 so that a flexible flat cable 25 is provided. The flexible flat cable 25, which resists pulling and bending of the cables 25, 25;
25 can be prevented from waving or sagging.

However, if the moving distance of the slider 10 becomes long (including the case where the flexible flat cables 25, 25 are long) with the opening operation of the slide door 2, for example, the flexible flat cables 25, 2
Since the distance between the end portion of 5 and the bent portion is widened, in the case of the flexible auxiliary plate 29 made of synthetic resin (as opposed to the above-mentioned convex type), the rigidity and the change in the environmental temperature may cause a long period of time. If viewed from the viewpoint, there is a possibility that sagging will gradually occur (for example, sagging as indicated by arrow A in FIG. 12).

The flexible flat cables 25, 25 and the bending assist plate 29 are provided in the slider rail 9.
Of the flexible flat cables 25, 25 and the bending auxiliary plate 29 cannot follow the slider 10, and there is a concern that a kink or a bite is likely to occur. .

On the other hand, if the bending auxiliary plate 29 is made of the above-mentioned convex, the improvement can be achieved. However, since special processing and heat treatment are required and there is no limit, it is hardly sufficient. There is something.

The present invention has been made in view of the above circumstances, and ensures that even if the flexible flat cable in the power supply device for a sliding door for an automobile becomes long or the distance between the end portion and the bent portion becomes large, Flexible
An object of the present invention is to provide a sagging prevention method and a sagging prevention structure that can prevent sagging of a flat cable.

[0016]

According to a first aspect of the present invention, there is provided a method for preventing a flexible flat cable from sagging in a power supply apparatus for a sliding door for an automobile according to the present invention. A power supply device for an automobile slide door interposed between movably mounted slide doors is movably held by a rail-shaped slider rail provided on either the vehicle body or the slide door. A slider is arranged between the vehicle body and the slide door through the inside of the slider rail, and one end is provided to a vehicle body side circuit body,
A circuit body having the other end connected to the slide door side circuit body, and a portion of the circuit body wired to the slider rail is used for opening and closing the slide door of the slider. A single-layer or laminated flexible flat cable that follows the movement, and a flexible thin plate-like bending auxiliary plate attached to the flexible flat cable and formed with the slider rail and the bending. The auxiliary flat plate is brought into contact with and held by magnetic force to prevent the flexible flat cable from hanging down in the slider rail.

In the above configuration, the method for preventing the flexible flat cable from hanging down in the power supply device of the sliding door for an automobile includes a slider rail constituting the power supply device and a circuit body bent and housed in the slider rail of the power supply device. The flexible flat cable inside the slider rail is contacted and held by magnetic force with the bending auxiliary plate attached to the flexible flat cable of
A method is used to prevent the cable from sagging.
By adopting such a method, flexible
If the flat cable becomes long or flexible
Even when the distance between the end of the flat cable and the bent portion is widened, in addition to the function originally provided by the bending auxiliary plate, the magnetic contact between the slider rail and the bending auxiliary plate,
The added retention eliminates the risk of sagging of the flexible flat cable. Therefore, the flexible flat cable and the bending auxiliary plate follow forever when the slider is moved in accordance with the opening / closing operation of the sliding door, and thus the kink (ki) is required.
nk) and biting can be reliably prevented.

According to a second aspect of the present invention, there is provided a method for preventing a flexible flat cable from sagging in a power supply apparatus for an automobile slide door according to the present invention. In the drooping prevention method, all or a part of a contact surface of the slider rail with respect to the bending auxiliary plate, all or a part of the bending auxiliary plate, or all or a part of the contact surface of the slider rail and the bending auxiliary It is characterized in that any part of the whole or a part of the plate is magnetized by the magnetizing means.

In the above configuration, all or a part of the contact surface of the slider rail with respect to the bending auxiliary plate, all or a part of the bending auxiliary plate, or all or a part of the contact surface of the slider rail and all of the bending auxiliary plate. Alternatively, any one of the parts is magnetized by the magnetizing means. Therefore, since such a portion is magnetized by the magnetizing means, if the mating side is made of steel, the slider rail and the bending auxiliary plate can be easily brought into contact with and held by the magnetic force, and the slide door or A portion to be magnetized can be appropriately selected according to the specifications of the power supply device.

According to a third aspect of the present invention, there is provided a method for preventing a flexible flat cable from sagging in a power supply device for an automobile slide door according to the present invention. In the sagging prevention method, the magnetizing means forms the part with a magnetic material and performs a permanent magnetizing process, or forms a steel and performs a permanent magnetizing process on the portion, and applies and dries a powder or a coating material made of a magnetic material. And applying a permanent magnet, and attaching a thin tape of a magnet.

In the above-mentioned structure, the magnetizing means may apply a powder or a coating material made of a magnetic material to the above-mentioned portion, which is formed of a magnetic material and subjected to permanent magnetizing treatment, or formed of steel and subjected to permanent magnetizing treatment. One of coating, drying and permanent magnetizing, and attaching a thin tape of a magnet is adopted. Therefore, the magnetizing means can be appropriately selected in consideration of the productivity and workability of the power supply device.

Claim 4 has been made to solve the above-mentioned problem.
The hanging structure of the flexible flat cable in the power supply device for an automotive slide door according to the present invention described above includes a power supply device for an automotive slide door interposed between a vehicle body and a slide door slidably attached to the vehicle body. A rail-shaped slider rail provided on one of the vehicle body and the slide door, a slider movably held by the slider rail, and wiring between the vehicle body and the slide door via the inside of the slider rail. A circuit body having one end connected to the vehicle body side circuit body and the other end connected to the slide door side circuit body, and a portion of the circuit body arranged with respect to the slider rail, A single-layer or laminated flexible flat cable that follows the movement of the slider for opening and closing the slide door. And a flexible thin cable-mounted bending auxiliary plate attached to the flexible flat cable, and the slider rail has at least all or a part of a contact surface of the slider rail with respect to the bending auxiliary plate, Providing a magnetized portion that generates a magnetic force in any part of all or a part of the bending auxiliary plate or all or a part of the contact surface of the slider rail and all or a part of the bending auxiliary plate; It is characterized in that a rail and the bending auxiliary plate are contacted and held via the magnetized portion to prevent the flexible flat cable from hanging down in the slider rail.

In the above structure, the structure for preventing the flexible flat cable from sagging in the power supply device for the sliding door for an automobile includes a slider rail constituting the power supply device and a circuit body bent and accommodated in the slider rail of the power supply device. A magnetized portion that generates a magnetic force is provided on one or both of the bending auxiliary plates attached to the flexible flat cable of the present invention, and the slider rail and the bending auxiliary plate are brought into contact with and held through the magnetized portion, so that the inside of the slider rail is A structure is adopted to prevent the flexible flat cable from sagging. By adopting such a structure, even if the flexible flat cable becomes long or the distance between the end of the flexible flat cable and the bent portion becomes large,
In addition to the function originally provided by the bending auxiliary plate, one or both of the slider rail and the bending auxiliary plate are provided with a magnetized portion capable of making contact and holding by magnetic force, so that the flexible flat cable hangs down. Is no longer a possibility. Therefore, the flexible flat cable and the bending auxiliary plate follow forever when the slider is moved in response to the opening / closing operation of the slide door, so that kink and biting can be reliably prevented.

According to a fifth aspect of the present invention, there is provided a structure for preventing a flexible flat cable from sagging in a power supply apparatus for an automobile slide door according to the present invention. In the sag prevention structure, the magnetized portion is formed of a magnetic material and is subjected to permanent magnetizing processing.
It is formed by applying any of the following: forming a permanent magnet by forming from steel, applying a powder or coating material made of a magnetic material, drying and forming a permanent magnet, and attaching a thin tape of a magnet. It is characterized by:

In the above structure, the magnetized portion is formed of a magnetic material and subjected to permanent magnetizing treatment, formed of steel and subjected to permanent magnetizing treatment, and a powder or a coating material comprising a magnetic material is applied and dried to form a permanent magnet. It is formed by performing any one of processing and attaching a thin tape of a magnet. Therefore, it is possible to appropriately form the magnetized portion in consideration of productivity and workability of the power supply device.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a power supply device showing an embodiment of a structure for preventing a flexible flat cable from hanging down in a power supply device for a sliding door for an automobile according to the present invention. 2 is a sectional view of the slider rail of FIG. 1, FIG. 3 is a perspective view of the flexible flat cable and the bending assist plate of FIG. 2, and FIGS. 4 to 6 are the sliding door of FIG. FIG. 4 is an explanatory diagram for explaining the operation of the flat cable and the bending auxiliary plate. In addition, the same reference numerals are given to the same components as those in the conventional example, and the detailed description is omitted.

In FIG. 1, reference numeral 31 denotes a power supply device for an automobile slide door interposed between the vehicle body 1 and the slide door 2, and a slider rail 33 (to be described later) having a magnetized portion 32 to be described later and a slider rail 33 to be described later. flexible·
An auxiliary bending plate 34 (described later) attached to the flat cables 25, 25 is held in contact with a magnetic force generated in the magnetized portion 32, and the flexible flat cables 25, 25 hang down in the slider rail 33. There is no structure.

The power supply device 31 is provided on the slide door 2 and has a rail-shaped slider rail 33 having a magnetized portion 32, the slider 10 movably held by the slider rail 33, and interlocked with the movement of the slide door 2. The flexible arm 11 (a plurality of arms may be connected to each other) may be configured such that the rotating shaft 11 a serving as one end is rotatably attached to the vehicle body 1 and the rotating shaft 11 b serving as the other end is rotatably attached to the slider 10. ), And one end 12a is arranged on the vehicle body side harness 13 and the other end 12b (see FIG. 2) is arranged on the slide door side harness 14 (see FIG. 2). Circuit body 12 connected to
(See FIG. 2). As described in the conventional example, 4 is a vehicle body side wall, 5 is a doorway, 6 is a step, and 8 is a hinge roller.

The slider rail 33 is fixed to the panel 15 of the slide door 2, and has a cavity 16 for the circuit body 12 and a rail 17 for the slider 10, as shown in FIG. A terminal block 18 having an outlet 18a for the other end 12b side of the circuit body 12 is provided at one end 16a of the cavity 16;
The other end 16b (see FIG. 1) is similarly provided with a terminal block 19 (see FIG. 1) which also serves to prevent the circuit body 12 from protruding. A seat 20 is formed in the terminal block 18.

A magnetized portion 32 made of a magnetic material (eg, ferrite) and subjected to a permanent magnetizing process is provided above the slider rail 33 so as to form a ceiling wall of the cavity 16. They are provided as one piece or separate bodies.

The slider 10 is provided with three rollers 21 for rolling on the rail 17 on both sides of the main body 10a. In addition, a seat 2 is provided above the main body 10a.
2 is provided, and a flexible arm 11 is provided below the main body 10a.
Is attached.

The flexible arm 11 is, as shown in FIG.
It is a tubular body that bends and stretches in conjunction with the movement of the slide door 2 and has a circuit body 12 (see FIG. 2) routed therein, and has rotating shaft portions 11a and 11b formed at both ends.

As shown in FIG. 2, the circuit body 12 is arranged between the vehicle body 1 and the slide door 2 via the inside of the flexible arm 11 and the inside of the slider rail 33, and a vehicle body side harness 13 (see FIG. 1). ), The two flexible flat cables 25 and 25 bent and housed in the slider rail 33, and the lead-out port 18 a of the terminal block 18 and connected to the slide door side harness 14. , And both ends of the flexible flat cables 25, 25, and the harness 24 and the harness 26 are connected to the seat 22 of the slider 10.
And the connector 28 provided on the terminal block 18 of the slider rail 33 (the connection is not limited to the connectors 27 and 28, but appropriate means such as welding can be used).

The flexible flat cable 25,
25, the seat 20 of the slider rail 33 and the slider 1
A thin plate-shaped bending auxiliary plate 34 whose both ends are screwed and fixed to the 0 seat portion 22 is mounted. The bending assist plate 34 has flexibility, and moves along with the flexible flat cables 25 while changing the bending position with the movement of the slider 10. At this time, the auxiliary bending plate 34 is contacted and held by the magnetic force generated in the magnetized portion 32 of the slider rail 33, so that there is no possibility that the auxiliary bending plate 34 hangs down with the flexible flat cables 25.

On the other hand, as shown in FIG. 3, the flexible flat cables 25, 25
A plurality of projections 35 (the number and spacing of which can be appropriately set according to the usage state) are provided on both sides 34a, 34a side along the longitudinal direction.

The protrusion 35 is a narrow plate-like piece having an insertion portion 36 and having an L-shaped cross section, and is integrally formed by stamping a substrate 34b of the bending auxiliary plate 34 by press working. . Further, a tapered portion 35a is formed at the tip of the projection 35 in consideration of the mountability of the flexible flat cables 25, 25. In addition, a plurality of 34c
Indicates a punched hole.

The flexible flat cable 25,
In the case where 25 is to be mounted on the bending assist plate 34 to be supported, mounting in the direction of arrow P and the direction of arrow Q can be considered.
First, in the case of the arrow P direction, one of the flexible flat cables 25, 25 and the bending auxiliary plate 34 is bent in the width direction and then mounted in the insertion portion 36, and the arrow Q direction. In the case of (1), one of the flexible flat cables 25, 25 or the bending auxiliary plate 34 is slid and attached to the insertion portion 36 (in either case of attachment or support, it is easy and quick. Of course, it can be performed, which contributes to improvement of workability).

Incidentally, the flexible flat cable 2
Both ends of the connectors 5 and 25 are connected to the connectors 27 and 28 as described above.
(See FIG. 2), so that the two flexible flat cables 25, 25 that are originally bent when bent are bent at both ends (for example, the two flexible flat cables 25, 25 whose both ends are not fixed). And both ends are displaced)
Is caused by bending at an intermediate portion of the flexible flat cables 25, 25. However, protrusion 3
5 are provided with an interval in the longitudinal direction, the interval absorbs the bending, and there is no particular problem.

In the above configuration, the power supply device 3 operates as shown in FIGS. 4 to 6 in accordance with the opening operation of the slide door 2 (the closing operation is the reverse of the opening operation). . In order to explain the operations of the flexible flat cables 25, 25 and the bending auxiliary plate 34, these are replaced with a cable 37 with a bending auxiliary plate.

When the door is closed as shown in FIG. 4, the flexible arm 11 of the power supply device 3 is bent at an acute angle and is kept in a contracted state at the corner of the step 6 (rear side of the vehicle body 1). The slider 10 connected to the flexible arm 11 is located behind the slider rail 33 on the rear side of the vehicle body 1. The bent portion 37a of the cable 37 with a bending assist plate bent and housed in the slider rail 33 is located at a substantially intermediate portion of the slider rail 33. In this state, about half of the entire length of the bending assist plate 34 is approximately The contact is held by the magnetized part 32.

Then, the slide door 2 is opened, and FIG.
When the door is half-opened, the slider 10 is guided via the slider rail 33 (moves forward in the vehicle body 1) in conjunction with the movement of the slide door 2, and the flexible arm 11 rotates in the direction of the arrow. At this time, the flexible arm 11 slightly expands. In addition, the bent portion 37 of the cable 37 with a bending auxiliary plate
In the case of a, the bending position moves in the forward direction of the vehicle body 1. In this state, the bending assist plate 34 is further contacted and held by the magnetized portion 32 by the amount moved in the forward direction of the vehicle body 1.

Further, when the slide door 2 is moved to the rear of the vehicle body to be fully opened as shown in FIG.
The flexible arm 11 expands to a substantially right angle state in conjunction with the movement of the slider 10 in the forward direction. Further, the bending position of the bending portion 37a of the cable 37 with a bending auxiliary plate moves further in the front direction of the vehicle body 1. In this state, the bending auxiliary plate 34 is contacted and held by the magnetized portion 32 by an amount further moved in the forward direction of the vehicle body 1, and the bending portion of the bending auxiliary plate 34, that is, the cable 37 with the bending auxiliary plate Even if the position of the bent portion 37a is moved sufficiently in the forward direction of the vehicle body 1 than when the door is closed, the bending assist plate 34
Is maintained in contact by magnetic force and does not hang down.

As described above with reference to FIGS. 1 to 6, the flexible flat cable 25,
Even when the length of the flexible auxiliary cable 25 is long or the distance between the end portion of the flexible flat cable 25 and the bent portion is wide, the function originally provided by the bending auxiliary plate 34 (while holding with the plurality of protrusions 35, In addition to preventing the hanging from occurring due to the rigidity), the contact and holding of the slider rail 33 and the auxiliary bending plate 34 due to the magnetic force are added. The flexible flat cables 25, 25 and the auxiliary bending plate 34 follow the movement of the slider 10 in response to the opening and closing operations. Therefore, kink and biting can be reliably prevented.

The magnetized portion 3 described with reference to FIG.
2 indicates the entire upper part of the slider rail 33,
The present invention is not limited to this, and it is also possible to partially provide them. That is, it is possible to provide the magnetized portion 32 in a stripe pattern on the upper portion of the slider rail 33. By providing the magnetized portion 32 on the slider rail 33 side, as described above, the bending auxiliary plate 34 can sufficiently cope with being made of steel,
It is also possible to eliminate the need to use a convex auxiliary plate made of Convex, thereby improving the productivity.

The whole or a part of the upper portion of the slider rail 33 is made of steel, and at least the substrate 34 of the bending assist plate 34 is formed.
It is also possible that b is a magnetized part. That is, the substrate 34b
It is naturally possible to form a magnetic material (for example, ferrite) and to perform a permanent magnetizing process to perform the reverse of the above. Further, the entire or a part of the upper portion of the slider rail 33 and the substrate 34b (see FIG. 3) of the bending auxiliary plate 34 can be formed as the above-described magnetized portion.

Next, another embodiment of a structure for preventing a flexible flat cable from sagging in a power supply device for an automobile slide door according to the present invention will be described with reference to FIGS. Except for the auxiliary bending plate 38 described below, the configuration is the same as that described in the conventional example (see FIGS. 9 to 11), and thus the same reference numerals are given and the detailed description is omitted. Further, at least the upper part of the slider rail 9 is made of steel, and this power supply device is denoted by reference numeral 31 '.

In FIG. 7, a thin plate-shaped bending auxiliary plate 38 is made of synthetic resin, has flexibility, is mounted on the flexible flat cables 25, 25, and has both ends of the slider rail 9 at both ends. The seat 20 and the seat 22 of the slider 10 are fixed by screws. Further, the bending assist plate 38 is adapted to follow the flexible flat cables 25 and 25 while changing the bending position with the movement of the slider 10.

Although not shown, the bending auxiliary plate 38 is provided with projections and ridges similar to the above-mentioned projections 35 on the surface side of the flexible flat cables 25, 25. On the opposite side of the slider rail 9, that is, on the side of the contact surface with respect to the upper portion of the slider rail 9, two thin tapes 39 of a plastic magnet as a magnetized portion are stuck along the longitudinal direction.

In the above configuration, for example, when the slide door 2 is opened, as shown in FIG. 8, the position of the bending portion of the bending auxiliary plate 38 is changed by arrows B and C as the slider 10 moves. , D in this order. Then, the bending auxiliary plate 38 is held in contact with the upper portion of the slider rail 9 by the thin tapes 39 and 39 by the amount of the movement of the bending portion, and the same effect as described above is exerted.

By attaching the thin tapes 39, 39, the auxiliary bending plate 38 can be made of a non-magnetic material (for example, aluminum, copper alloy, laminated material, etc.). Can be selected as appropriate.

It is also possible to provide the thin tapes 39, 39 on the upper part of the slider rail 9 and make the bending auxiliary plate 38 made of steel, and apply a powder of a magnetic material such as ferrite or a coating material to dry. Thereafter, a permanent magnetizing process can be performed (including applying or bonding a magnetized substance). Further, it is naturally possible to magnetize both the upper part of the slider rail 9 and the bending auxiliary plate 38 instead of magnetizing only one of them. In the case of the thin tapes 39, 39, the slider rail 9
The upper portion and the auxiliary bending plate 38 can be made of a synthetic resin material or the above-mentioned nonmagnetic material.

In another embodiment as described above,
As described above, kink and biting can be reliably prevented. In addition, there is no need to use a convex auxiliary plate made of a convex, and the effect that productivity can be improved is also exhibited.

In addition, it goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

[0054]

As described above, according to the first aspect of the present invention, a method for preventing a flexible flat cable from hanging down in a power supply device for a sliding door for an automobile is provided by a slider rail constituting a power supply device. When,
The flexible flat cable as a circuit body bent and accommodated in the slider rail of the power supply device is brought into contact with and held by a bending auxiliary plate attached to a flexible flat cable by a magnetic force, and the flexible flat cable hangs down in the slider rail. The method of preventing is adopted. By adopting such a method, flexible flat
If the cable becomes long or flexible flat
Even when the distance between the end of the cable and the bent portion is widened, in addition to the function originally provided by the bending assist plate, the slider rail and the bending assist plate are added to the magnetic contact and holding, so that the flexibility is increased. Eliminates the risk of sagging of the flat cable. Therefore, the flexible flat cable and the bending auxiliary plate follow forever when the slider is moved in accordance with the opening / closing operation of the slide door, so that kink and biting can be reliably prevented. Play.

According to the second aspect of the present invention, all or a part of the contact surface of the slider rail with respect to at least the bending auxiliary plate, all or a part of the bending auxiliary plate, or all of the contact surface of the slider rail. Alternatively, any part of the part and the whole or part of the bending auxiliary plate is magnetized by the magnetizing means. Therefore, since such a portion is magnetized by the magnetizing means, if the mating side is made of steel, the slider rail and the bending auxiliary plate can be easily brought into contact with and held by the magnetic force, and the slide door or There is an effect that a portion to be magnetized can be appropriately selected according to the specifications of the power supply device.

According to the third aspect of the present invention, the magnetizing means forms a permanent magnet on the above-described portion by using a magnetic material, and forms a permanent magnet by using steel. Either of applying a powder made of a magnetic material or a coating material, drying and applying a permanent magnet, or attaching a thin tape of a magnet is adopted.
Therefore, there is an effect that the magnetizing means can be appropriately selected in consideration of productivity and workability of the power supply device.

According to the fourth aspect of the present invention, a flexible power supply device for an automobile slide door is provided.
The hanging prevention structure of the flat cable may be provided by either a slider rail constituting the power supply device or a bending auxiliary plate mounted on a flexible flat cable as a circuit body bent and housed in the slider rail of the power supply device or A magnetized part that generates magnetic force is provided on both sides, and the slider rail and the bending auxiliary plate are contacted and held through the magnetized part, adopting a structure that prevents the flexible flat cable from hanging down in the slider rail. I have. By adopting such a structure, even if the flexible flat cable becomes long or the interval between the end portion of the flexible flat cable and the bent portion becomes wide, the flexible auxiliary cable originally has In addition to the function, one or both of the slider rail and the bending assist plate are provided with a magnetized portion capable of making contact and holding by magnetic force, so that there is no danger of the flexible flat cable hanging down. Therefore, the flexible flat cable and the bending auxiliary plate follow forever when the slider is moved in accordance with the opening / closing operation of the slide door, so that kink and biting can be reliably prevented. Play.

According to the fifth aspect of the present invention, the magnetized portion is formed of a magnetic material and is subjected to permanent magnetizing treatment.
It is formed by applying any of the following: a permanent magnet made by forming a steel, a powder or a coating material made of a magnetic material is applied and dried to make a permanent magnet, and a thin tape of a magnet is attached. It has become. Therefore,
There is an effect that the magnetized portion can be appropriately formed in consideration of productivity and workability of the power supply device.

[Brief description of the drawings]

FIG. 1 is a perspective view of a power supply device showing an embodiment of a structure for preventing a flexible flat cable from sagging in a power supply device for an automobile slide door according to the present invention.

FIG. 2 is a sectional view of the slider rail of FIG. 1;

FIG. 3 is a perspective view of the flexible flat cable and the bending assist plate of FIG. 2;

FIG. 4 is an explanatory view at the time of closing the door for explaining the operation of the sliding door of FIG. 1, the flexible flat cable and the bending assist plate of FIG. 2;

5 is an explanatory view at the time of closing the door for explaining the operations of the slide door of FIG. 1, the flexible flat cable and the bending assist plate of FIG. 2 when the door is half-opened from the state of FIG. 4;

6 is an explanatory diagram at the time of closing the door for explaining the operations of the sliding door of FIG. 1, the flexible flat cable and the bending auxiliary plate of FIG. 2 when the door is fully opened from the state of FIG. 5;

FIG. 7 is a perspective view of a power supply device showing another embodiment of a structure for preventing a flexible flat cable from sagging in a power supply device for an automobile slide door according to the present invention.

FIG. 8 is a sectional view of the slider rail of FIG. 7;

FIG. 9 is a perspective view showing a power supply device for a conventional slide door for an automobile.

FIG. 10 is a side view when FIG. 9 is viewed from the front direction of the vehicle body.

FIG. 11 is a sectional view of the slider rail of FIG. 9;

12 is a cross-sectional view of the slider rail for explaining a state in which the flexible flat cable hangs down in the slider rail of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Slide door 10 Slider 11 Flexible arm 12 Circuit body 13 Vehicle body side harness 14 Slide door side harness 25 Flexible flat cable 31, 31 'Power supply device 32 Magnetization part 33 Slider rail 34 Bending auxiliary plate 35 Projection 36 Insertion part 37 Cable with bending auxiliary plate 37a Bending part 38 Bending auxiliary plate 39 Thin tape (magnetized part)

Claims (5)

[Claims] 1. A power supply device for a vehicle slide door interposed between a vehicle body and a slide door slidably mounted on the vehicle body, comprising a rail-shaped slider rail provided on one of the vehicle body and the slide door. A slider which is movably held by the slider rail, and which is arranged between the vehicle body and the slide door through the slider rail, one end of the slider being on the vehicle body side circuit and the other being on the slide door side circuit body. And a circuit body connected to the slider rail, and a portion of the circuit body arranged on the slider rail is formed as a single layer or a laminate that follows movement of the slider in opening and closing the slide door. A flexible flat cable, a thin plate-shaped bending auxiliary plate attached to the flexible flat cable, and having flexibility. A power supply device for a sliding door for an automobile, wherein the slider rail and the auxiliary bending plate are contacted and held by magnetic force to prevent the flexible flat cable from hanging down in the slider rail. To prevent sagging of flexible flat cable. 2. A method for preventing a flexible flat cable from sagging in a power supply device for a sliding door for an automobile according to claim 1, wherein all or a part of a contact surface of the slider rail with respect to at least the bending auxiliary plate, the bending. An automobile characterized in that magnetizing means magnetizes either all or a part of an auxiliary plate, or all or a part of the contact surface of the slider rail and all or a part of the bending auxiliary plate. Flexible power supply for sliding doors
How to prevent flat cable from sagging. 3. A method for preventing a flexible flat cable from sagging in a power supply device for an automobile slide door according to claim 2, wherein the magnetizing means is formed of a magnetic material with respect to the portion to form a permanent magnet. One of the following: to be processed, to be made of steel and made into a permanent magnet, to be applied to a powder or coating material made of a magnetic material and dried to be made into a permanent magnet, and to be attached with a thin tape of a magnet. A method for preventing sagging of a flexible flat cable in a power supply device for an automobile slide door. 4. A power supply device for a vehicle slide door interposed between a vehicle body and a slide door slidably mounted on the vehicle body, comprising a rail-shaped slider rail provided on one of the vehicle body and the slide door. A slider which is movably held by the slider rail, and which is arranged between the vehicle body and the slide door through the slider rail, one end of the slider being on the vehicle body side circuit and the other being on the slide door side circuit body. And a circuit body connected to the slider rail, and a portion of the circuit body arranged on the slider rail is formed as a single layer or a laminate that follows movement of the slider in opening and closing the slide door. A flexible flat cable, a thin plate-shaped bending auxiliary plate attached to the flexible flat cable, and having flexibility. All or a part of the contact surface of the slider rail with respect to the bending auxiliary plate, all or a part of the bending auxiliary plate, or all or a part of the contact surface of the slider rail and the bending auxiliary plate A magnetized portion that generates a magnetic force is provided in any or all of the portions, and the slider rail and the bending assist plate are brought into contact with and held through the magnetized portion, and the flexible rail in the slider rail is held. A structure for preventing a flat cable from sagging in a power supply device for an automobile slide door, which prevents the flat cable from sagging. 5. The hanging prevention structure of a flexible flat cable in the power supply device for a sliding door for an automobile according to claim 4, wherein the magnetized portion is formed of a magnetic material and processed to be a permanent magnet. The permanent magnet, and then apply and dry a powder or coating material made of a magnetic material to make a permanent magnet, and attach a thin tape of a magnet. A structure for preventing a flexible flat cable from sagging in a power supply device for an automotive slide door.