JP2000092679A - Cable wiring structure between fixed member and movable member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fully withstand a long-term use by prolonging the life of the cable wiring structure between fixed and movable members. SOLUTION: In the cable wiring structure between fixed and movable members, a fixed member 2 and a movable member 3 that can travel relative to the fixed member 2 are arranged along the traveling direction of the movable member 3, a cable support member 5A made of a band-shaped metal plate 50 that is in a sectional shape for forming a convex surface in a widthwise direction and can be curved and deformation in the longitudinal direction where a middle part is connected by a flexible flat cable 4 that is folded back in a U shape, the middle part is looped back in a U shape along the outside of the flat cable 4, and both ends are connected to the fixed member 2 and the movable member 3. In the cable wiring structure, the cable supporting member 5A joins a film 51 made of a synthetic resin for covering the surface of the band-shaped metal plate 50 to the surface, and stress that acts on the above loop-back part is relaxed by the reaction of the film 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable wiring structure for supplying electricity between a fixed member and a movable member.

[0002]

2. Description of the Related Art Taking a vehicle as an example, a sliding door of a wagon-type car or the like is provided with a power window for automatically moving up and down a door glass, and it is necessary to supply power from the vehicle body to the sliding door. Therefore, between the vehicle body and the slide door, a flexible flat cable that can be bent and deformed is wired so as to be able to stably energize without disconnection in response to the sliding movement of the door by opening and closing the slide door. Electrically connected.

FIG. 5 shows an outline of an example of the wiring structure.
The slide door D is movably supported on the side of the vehicle body by a slide rail (not shown), and moves between a closed position (two-dot chain line) and an open position (solid line). The slide door D is provided with a guide rail 1 extending along the moving direction. A fixed member 2 fixed to the rear end of the guide rail 1 and electrically connected to the slide door D is connected to the vehicle body via a link member 7 so as to be movable along the guide rail 1 and to be mechanically connected. The movable member 3 is provided with a movable member 3. The fixed member 2 and the movable member 3 are electrically connected to each other by a flexible flat cable (hereinafter, referred to as a flat cable) 4 which extends in the moving direction of the movable member 3 and has an intermediate portion folded in a U-shape. . A cable supporting member 5 is formed on the outside of the flat cable 4 by bending the intermediate portion in a U-shape along the flat cable 4 and connecting both ends to the fixed member 2 and the movable member 3, respectively. The flat cable 4 is supported from the outside.

When the sliding door D is opened and closed,
When the movable member 3 connected to the vehicle body relatively moves along the guide rail 1, the cable support member 5 and the flat cable 4 supported by the movable member 3 are bent and deformed freely, respectively. Corresponding to the move.

By the way, if a flat band-shaped metal plate is used as the cable supporting member 5, the folded portion is deformed so as to bulge outward (FIG. 6), and a large space is required. Therefore, in order to impart straightness to the metal plate, as disclosed in Japanese Patent Application Laid-Open No. 63-253813, the cable support member uses a band-shaped metal plate having a cross-sectional shape having a convex curved surface in the width direction, and the folded portion is formed. The folded back diameter is reduced to save space.

[0006]

However, in a cable supporting member using a strip-shaped metal plate having a convex curved surface in the width direction, a tensile stress is applied to the folded portion so as to extend the metal plate in the width direction into a flat plate shape. In addition, a tensile stress acts to extend linearly in the length direction. Therefore, stress is repeatedly applied to the cable support member as the slide door D is opened and closed, causing fatigue damage. In particular, if the cable supporting member has a contact flaw with another member during the assembling work, the cable supporting member is easily damaged from the flaw. Therefore, an object of the present invention is to improve the durability of the cable support member by relaxing the stress acting on the cable support member.

Further, since both ends of the cable support member are firmly fastened to the fixed member 2 and the movable member 3 by the screw members, when the movable member 3 rattles during movement, the folded portion of the cable support member is twisted. Occurs and the torsion occurs in addition to the tensile stress, further shortening the durable life of the cable support member. Accordingly, an object of the present invention is to provide a cable support member mounting structure in which a cable support member is not twisted even when the movable member rattles.

[0008]

SUMMARY OF THE INVENTION The present invention comprises a fixing member,
A movable member that is relatively movable with respect to the fixed member is disposed along the moving direction of the movable member, and the middle portion is connected by a flat cable that is folded back into a U-shape, and along the outside of the flat cable. A cable support member made of a strip-shaped metal plate that is bent in the longitudinal direction and has a cross-sectional shape that forms a curved surface that is convex in the width direction and has both ends connected to the fixed member and the movable member, respectively, In a cable wiring structure between a fixed member and a movable member, wherein the flat cable is supported from the outside by a cable supporting member, a synthetic resin film covering the surface of the cable supporting member is joined to the surface of the cable supporting member. . The tensile stress acting on the cable supporting member is reduced by the reaction force against the elongation of the film.

The above-mentioned synthetic resin film is formed wider than the above-mentioned cable supporting member, and is joined to the outer surface and the inner surface of the cable supporting member, respectively. The protruding edges are joined to each other (claim 2). Since the entire surface of the cable supporting member is covered and protected by the film, the cable supporting member can be prevented from being damaged, and the film is not peeled off because the edges protruding from the cable supporting member are joined to each other.

The cable support member is connected to the fixed member and the movable member so as to be swingable in the width direction. The torsion of the cable support member can be prevented at the connection portions at both ends of the cable support member.

[0011]

FIG. 1 to FIG. 4 show an embodiment in which the present invention is applied to a sliding door of a vehicle. FIG. 1 (A)
As shown in FIG. 1, the guide rail 1 is a long rail member having a rectangular C-shaped cross section (FIG. 2) opened downward, and is provided near the lower end of the slide door D (FIG. 5) so as to follow the moving direction. It is fixed. The guide rail 1 has a lower surface 11
The movable member 3 which is movable along the opening 12 is provided, and the fixed member 2 is fixed to the rear end of the ceiling surface 13 at the rear end.

The fixed member 2 and the movable member 3 are provided with connectors 20 and 30, respectively.
Numerals 0 and 30 are connected by a flat cable 4 having an intermediate portion folded in a U-shape, and the fixed member 2 and the movable member 3 are electrically connected. The flat cable 4 is formed by embedding a plurality of copper wires or a strip-shaped copper plate as a conductor in a thin strip-shaped synthetic resin plate that can be bent and deformed in the length direction.

The fixing member 2 is electrically connected to the slide door D by a power supply line 201 connected to the flat cable 4 via the connector 20. On the other hand, the movable member 3 is electrically connected to the vehicle body by a power supply line 301 connected to the flat cable 4 via the connector 30. Thereby, the slide door D and the vehicle body are electrically connected. The movable member 3 is mechanically connected to the vehicle body via a link member 7.

Further, in the guide rail 1, a cable supporting member 5A is provided outside and along the flat cable 4 to support the flat cable 4 and protect the flat cable 4. FIG. 1B shows the cable supporting member 5.
5A shows a cross section of the cable supporting member 5A. The cable supporting member 5A is made of a synthetic resin (polyester) made of a synthetic steel (polyester) with both sides of a thin (about 0.11 mm) cross-sectionally deformable strip-shaped steel sheet 50 having a convex curved surface in the width direction and capable of being bent and deformed in the length direction. It is covered with a film 51. The film 51 has a thickness of about 30 μm and a width wider than that of the strip-shaped steel sheet 50. The film 51 is firmly adhered to an outer surface and an inner surface of the strip-shaped steel sheet 50 by a thermoplastic adhesive. Both edges of each film 51 protruding from the edge are stuck together to form ears 52 on both edges of the cable support member 5A.

The length of the cable support member 5A is set to be longer than that of the flat cable 4, the intermediate portion is folded back in a U-shape and arranged along the outside of the flat cable 4, and both ends are fixed members 2 respectively. And the movable member 3 (FIG. 1A).

The connection structure of the terminal of the cable supporting member 5A will be described with reference to FIGS. As shown in FIGS. 2 and 3, the movable member 3 includes a first base plate 31 and a second base plate 3 that vertically sandwich the lower surface 11 of the guide rail 1.
The two base plates 31 and 32 are connected by tightening nuts N to bolts B1 and B2 that penetrate both ends vertically. Between the first and second base plates 31, 32, rollers 33,
The roller 33 and 34 are movable by rolling in the opening 12 of the lower surface 11 of the guide rail 1. Reference numerals 35 and 36 in the figure denote plate-like spacers that vertically sandwich the opening edge of the opening 12 of the guide rail 1 and the rollers 33 and 34.

On the upper surface of the first base plate 31, one end of the cable support member 5A is connected and a connector 30 is fixed. At one end of the cable supporting member 5A, a large-diameter through hole 53 through which the head of the bolt B1 is inserted, and a locking hole 54 smaller in diameter than the through hole 53 are formed. On the other hand, a groove 302 which is slightly wider than the cable support member 5A into which the cable support member 5A is fitted and which corresponds to the widthwise curvature of the cable support member 5A is formed in the bottom surface of the connector 30. A projection 303 projecting downward is provided in the groove 302, and a concave portion 304 into which the head of the bolt B1 is fitted is formed.

One end of the cable supporting member 5A is fitted into the groove 302 of the connector 30 and is engaged with the bottom surface of the connector 30 by passing the projection 303 through the locking hole 54. The connector 30 is connected to both side walls 305 of the groove 302.
Are respectively superimposed on the upper surface of the first base plate 31, and the projections 303 are formed in the holes 311 of the first base plate 31.
Into the through hole 5 of the cable supporting member 5A.
3, is disposed in the upper surface of the first base plate 31 by being fitted into the concave portion 304, and is sandwiched from above by a bracket 37 having a substantially Z-shaped cross section, and the bracket 37 is fastened and fixed to the bolt B2 together. It is.

A link member 7 is connected to the lower surface of the movable member 3. The link member 7 has metal terminals 72 and 73 fixed to both ends of a metal wire 71.
Are connected via the bolt B2. The other metal terminal 73 is connected to the vehicle body. In addition, connector 30
The power supply line 301 extending from the connection member 7 is wired along the link member 7.

As shown in FIG. 4, the fixing member 2 is provided with a connector 20 on the lower surface of a base plate 21 fixed to the ceiling surface 13 of the guide rail 1 by bolts B3 and B4, and a bolt B4 on the lower surface of the base plate 21. Cross-section almost fixed together with Z
The other end of the cable support member 5 </ b> A is connected so that the connector 20 is sandwiched and fixed between the brackets 22 having a letter shape and the base plate 21 and the connector 20.

The connection structure between the other end of the cable support member 5A and the fixed member 2 is substantially the same as the connection structure between the one end of the cable support member 5A and the movable member 3 described above. At the other end of the cable support member 5A, a large-diameter through-hole 55 for inserting the head of the bolt B3 and a small-diameter locking hole 56 are formed. On the other hand, a groove 202 is formed on the top surface of the connector 20 to receive the cable supporting member 5A. In the groove 202, a protrusion 2 projecting downward is provided.
03 is protruded, and a recess 204 is formed to fit the head of the bolt B3.

The other end of the cable supporting member 5A is inserted into the groove 202 of the connector 20, and the projection 203 of the connector 20 which is inserted into the hole 211 of the base plate 21 is passed through the locking hole 56. The heads of the bolts B <b> 3 fitted into the recesses 204 are passed through the through holes 55, and the grooves 202 are closed by closing the base 202 with the grooves 202.

At the time of opening / closing operation of the slide door D (FIG. 5),
The movable member 3 connected to the vehicle body moves relatively to the guide rail 1 so as to stay at that position. Following this, the cable supporting member 5A and the flat cable 4 whose outer side is supported by the cable supporting member 5A are each bent and deformed while the folded portion is displaced and moved within the guide rail 1.

Since the cable supporting member 5A is formed into a curved shape having a convex outer surface side, as shown in FIG. 1 (A), the radius of curvature of the folded portion can be reduced, and the portion from the fixed portion 2 to the folded portion can be reduced. Since the portion from the movable member 3 to the folded portion is horizontally parallel to each other, the space can be reduced without contacting the lower surface 11 and the ceiling surface 13 of the guide rail 1. Then, the cable supporting member 5A presses the flat cable 4 from the outside at the folded portion and supports the flat cable 4.

Further, a tensile stress acts on the cable supporting member 5A in the length direction and the width direction at the folded portion. However, since the belt-shaped steel plate 50 has the synthetic resin film 51 adhered to the upper and lower surfaces thereof so as to cover the same, the above-mentioned stress is relieved by the resistance of the film 51. Further, the cable supporting member 5A can prevent the strip-shaped steel plate 50 from being damaged at the time of assembling work or the like. The film 51 is hardly peeled off because the ear portions 52 are provided by bonding both side edges of each film 51 protruding from both side edges of the strip-shaped steel plate 50 to each other. As the film 51, a film of a plastic synthetic resin such as nylon other than polyester is used.

Further, the cable support member 5A connects both ends to the connector 2 of the fixed member 2 and the movable member 3 respectively.
0, 30 are inserted into grooves 202, 302,
3,303 and bolts B1 and B3
Since the base plates 21 and 31 are closed so as to be relatively rotatable in the width direction, the cable support member 5A can be prevented from being twisted when the movable member 3 moves. Therefore, the durability of the cable supporting member 5A is improved by reducing the tensile stress and preventing torsion,
It can withstand long-term use.

[0027]

According to the present invention, the durable life of the cable supporting member can be improved, and stable power supply to a moving body such as a sliding door can be performed for a long period of time.

[Brief description of the drawings]

FIG. 1 shows a cable wiring structure of the present invention.
1A is a partial cross-sectional side view, and FIG. 1B is a cross-sectional view of a cable support member used in the cable wiring structure of the present invention.

FIG. 2 is an exploded perspective view of a movable member of the cable wiring structure of the present invention.

FIG. 3A is a side view of the movable member, and FIG.
FIG. 3B is a cross-sectional view taken along a line IIIB-IIIB in FIG.

FIG. 4 is a side view of a fixing member of the cable wiring structure of the present invention.

FIG. 5 is a schematic side view of a cable wiring structure of a slide door of a vehicle.

FIG. 6 is a side view showing a state where a flat cable supporting member is folded back.

[Explanation of symbols]

 D Slide door 1 Guide rail 2 Fixed member 3 Movable member 30 Connector 4 Flexible flat cable 5A Cable support member 50 Belt-shaped metal plate (Band-shaped steel plate) 51 Film 52 Edge (ear)

Claims (3)

[Claims] 1. A fixed member and a movable member relatively movable with respect to the fixed member are provided along a moving direction of the movable member, and an intermediate portion is connected by a flexible flat cable folded back into a U-shape, In addition, the intermediate portion is folded into a U-shape along the outside of the flexible flat cable, and both ends are connected to the fixed member and the movable member, respectively, and have a cross-sectional shape having a convex curved surface in the width direction, and can be bent and deformed in the length direction. In a cable wiring structure between a fixed member and a movable member, wherein a cable supporting member made of a metal plate is provided and the flexible flat cable is supported from the outside by the cable supporting member, the cable supporting member covers the surface of the cable supporting member. A cable wiring structure between a fixed member and a movable member, wherein a synthetic resin film is joined. 2. The cable of each film, wherein the synthetic resin film is formed wider than the cable support member and is joined to an outer surface and an inner surface of the cable support member, respectively, and covers the outer surface and the inner surface. 2. The cable wiring structure between a fixed member and a movable member according to claim 1, wherein edges protruding from the support member are joined to each other. 3. The cable wiring structure between a fixed member and a movable member according to claim 1, wherein the cable support member is connected to the fixed member and the movable member so as to be swingable in a width direction.