JPH10285764A - Attaching structure of flat wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low cost attaching structure of a flat wiring harness which can avoid the increase of an opening/closing load and sag caused by the long term usage, even if the number of lines of electrical wirings is increased. SOLUTION: An attaching structure is provided on a rear door and has a main part 16 is which an FFC 15 can be warped and housed, and a pusher 19 and coil springs 21, which are provided on the main part 16 and by which the FFC 15 can be warped and pulled into the main part 16. When a glass hatch is transferred from a closed position to an opened position, the FFC 15 is drawn out of the main part 16 and, when the glass hatch is transferred from the opened position to the closed position, the FFC 15 is pulled into the main part 16 by the pusher 19 and the coil springs 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat wire harness mounting structure, and more particularly, to a flat wire harness in which electric wiring is mounted on a flexible insulating film substrate in the extending direction of the film substrate. The present invention relates to a flat wire harness mounting structure in which a flat wire harness is interposed between, for example, a back door of a vehicle and a glass hatch that can be opened and closed independently of the back door.

[0002]

2. Description of the Related Art Generally, a large number of electric parts are mounted on an automobile or the like, and these electric parts are connected by a wire harness. Also, automobiles are provided with members that can be opened and closed, such as doors and trunks, and the amount of movement between these openable and closable members and the wire harness connected to the vehicle body is increasing.

In recent wagons and the like, a glass hatch that can be opened and closed independently with respect to a back door has appeared, and this glass hatch has a larger opening and closing amount than the back door. Since the opening and closing amount is large, the amount of movement of the wire harness is large, and it is necessary to connect the wire harness to a wiper or the like provided outside the glass hatch. You are using

[0005] In FIGS. 5 and 6, reference numeral 1 denotes a vehicle body, and a glass hatch 3 which can be opened and closed independently is provided on a back door 2 provided at the rear of the vehicle body 1 so as to be openable and closable. The glass hatch 3 is provided with a wiper 4, and a wire harness 6 having a curl cord 5 is interposed between the wiper 4 and the back door 2, and the wire harness 6 on the back door 2 side is a main body. 1 are connected to the electric components provided in the apparatus.

In the wire harness 6 having such a curl cord 5, when the glass hatch 3 is closed, the curl cord 5 contracts as shown in FIG.
When the glass hatch 3 is opened,
As shown in FIG. 7, the movement of the glass hatch 3 is allowed by the extension of the curl cord 5.

[0006]

However, in the wire harness 6 having such a curl cord 5, the curl cord 5 itself is expensive, and if the curl cord 5 is used for a long period of time, the curl cord 5 may be subject to hysteresis. As a result, it is difficult to store it in the vehicle body, and the appearance deteriorates.

When a defogger, a high-mount lamp, or the like is provided on the glass hatch 3, the number of wires of the wire harness 6 increases, so that the wire diameter of the curl cord 5 increases. There is a problem that the switching load of the glass hatch 5 is increased. Therefore, the present invention provides a flat wire harness instead of a curl cord between a fixing member and an opening / closing member that can be opened / closed with respect to the fixing member, so that the opening / closing load increases even when the number of electric wires increases. Can be prevented,
It is an object of the present invention to provide an inexpensive flat wire harness mounting structure that can prevent the occurrence of sagging even when used for a long time.

[0008]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, a flat wire harness having an electrical wiring attached to a flexible insulating film substrate in an extending direction of the film substrate is provided, and the flat wire harness is fixed to a fixing member and the fixing member. In a flat wire harness mounting structure interposed between an open / close member movable between a closed position for closing a member and an open position inclined to open the fixed member, any one of the fixed member and the open / close member A main body that is provided on one of the two sides and that can store the flat wire harness in a curved state; and a retraction unit that is provided on the main body and that can draw in the flat wire harness so as to bend into the main body. When the member moves from the closed position to the open position, the flat wire harness is pulled out of the main body, and the opening / closing member is moved from the open position. When moving to a position, and characterized in that so as to draw the flat wire harness in the body by the retraction mechanism.

In this case, a flat wire harness is used instead of the curl cord, and the flat wire harness is stored in the main body as the opening / closing member is opened / closed or pulled out from the main body, thereby allowing the opening / closing member to be opened / closed. Therefore, even if the number of electric wires increases, only the width of the flat wire harness increases, so that it is possible to prevent the opening / closing load of the opening / closing member from increasing, and to use the battery for a long time. Does not occur, stable opening and closing can be performed.

According to a second aspect of the present invention, in order to solve the above-mentioned problems, in the first aspect of the present invention, the flat wire harness is made of an FFC (flexible flat cable). In that case, the cost can be reduced as compared with the curl code. According to a third aspect of the present invention, in order to solve the above-mentioned problem, in the first or second aspect of the present invention, the retracting means is movably provided in a main body and is provided on a curved inner peripheral surface of the flat wire harness. It is characterized in that it has an abutting member that can be abutted, and an urging member that urges the abutting member in the drawing direction of the flat wire harness.

In this case, since the contact member is urged in the drawing direction of the flat wire harness by the urging member that contacts the curved inner peripheral surface of the flat wire harness, the flat wire harness always tries to be drawn into the main body. A force can be applied, and even when the opening / closing amount of the opening / closing member is large, the flat wire harness can be reliably drawn into the main body, and a highly reliable flat wire harness mounting structure can be obtained.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of a flat wire harness mounting structure according to the present invention. First, the configuration will be described. In FIG. 1, reference numeral 11 denotes a vehicle body, and a back door (fixing member) 12
Are provided to be freely opened and closed. The back door 12 is provided with a glass hatch (opening / closing member) 13 which can be opened and closed independently. The glass hatch 13 is provided with a wiper 14.

Further, between the back door 12 and the glass hack 13, an FFC (flexible flexure) constituting a flat wire harness is provided.
ible flat cable) 15 is interposed.
Is composed of a flexible insulating film substrate in which flat or round electric wirings are buried in parallel in the extending direction of the film substrate. The end of the FFC 15 on the glass hatch 13 side is electrically connected to the wiper 14 via a wire harness 10. The end of the FFC 15 on the side of the back door 12 is connected to an electric component in the vehicle body 11, for example, another wire harness. Connected to electrical components (battery and the like) via

As shown in FIG. 2, a main body 16 is provided inside the back door 12 on the inside of the vehicle body 11, and the main body 16 is attached to the vehicle body 11 by a clip 17 erected on the vehicle body 11. . Instead of the clip 17, an engaging hole 18 indicated by a virtual line is provided in the main body 16, and the engaging hole 18 is engaged with a clip provided in the vehicle body 11, or a bolt is inserted into the engaging hole 18. The main body 16 may be attached to the vehicle body 11 by being inserted therethrough.

An FFC 15 is accommodated in the main body 16 in a curved manner.
, And this end is connected to an electric component (battery or the like) via a wire harness or the like (not shown). Further, a pressing piece (contact member) 19 is provided in the main body 16, and the pressing piece 19 comes into contact with the curved inner peripheral surface of the FFC 15. The shaft 19a of the pressing piece 19 projects outward from slits 16a formed on both side surfaces of the main body 16, and the pressing piece 19 moves inside the main body 16 along the slit 16a.

Further, projections 20 are provided on both side surfaces of the main body 16, and one end of a pair of coil springs (biasing members) 21 is attached to the projections 20. Also, coil spring
The other end of 21 is attached to a shaft portion 19a, and the coil spring 21 urges the pressing piece 19 in the FFC 15 retraction direction. In the present embodiment, the pressing piece 19 and the coil spring 21 constitute a retraction unit.

Next, the operation will be described. First, when the glass hatch 13 is closed, as shown in FIG.
Since the glass hatch 13 is not inclined with respect to 12, FF
C15 is stored in the main body 16 in a curved state. At this time,
The FFC 15 is urged in the retraction direction by a coil spring 21 via a pressing piece 19.

When the glass hatch 13 is opened,
As shown in FIG. 2B, since the glass hatch 13 is inclined with respect to the back door 12, the FFC 15 is pulled with this inclination. At this time, the FFC 15 moves the pressing piece 19 in the pulling-out direction as shown by the imaginary line in FIG. 2B against the urging force of the coil spring 21, and is pulled out from the main body 16 with this movement. Therefore, the opening of the glass hatch 13 is allowed.

On the other hand, when the glass hatch 13 is shifted from the open state to the closed state, the pressing piece 19 is urged by the coil spring 21 and moves in the direction shown by the solid line in FIG. With the shift to the closed state, the FFC 15 is drawn into the main body 16 by the pressing piece 19 so as to bend. Therefore, the closure of the glass hatch 13 is allowed.

As described above, in the present embodiment, the FFC 15 is used in place of the curl cord, and the FFC 15 is stored in the main body 16 with the opening and closing of the glass hatch 13 or pulled out from the main body 16, so that the glass hatch 13 Since the opening and closing are permitted, even if the number of electric wires increases, the width of the FFC 15 only increases, so that it is possible to prevent the opening and closing load of the glass hatch 13 from increasing and to use the glass hatch 13 for a long time. Even when no slack occurs, stable opening and closing can be performed.

The flat wire harness is connected to an FFC15.
Therefore, the cost can be reduced as compared with the curl cord. Further, the retracting means is constituted by a pressing piece 19 movably provided in the main body 16 and capable of abutting against the curved inner peripheral surface of the FFC 15 and a coil spring 21 for urging the pressing piece 16 in the retraction direction of the FFC 15. , F
A force for always pulling the FC 15 into the main body 16 can be applied, and the FFC 15 can be reliably drawn into the main body 16 even when the opening and closing amount of the glass hatch 13 is large. Therefore, a highly reliable mounting structure of the FFC 15 can be obtained.

In this embodiment, the flat wire harness is composed of the FFC 15, but the same effect can be obtained by using a known FPC (flat flexible printed circuit) instead. In the present embodiment, the main body 16 is provided on the back door 12 side, but is not limited to this, and may be provided on the glass hatch 13 side. Also,
The mounting structure of the wire harness according to the present embodiment is interposed between the back door 12 and the glass hatch 13, but includes a fixing member such as a vehicle body and a side door, a vehicle body and a back door, and a trunk and a vehicle body. Alternatively, it may be applied between members that can be opened and closed. Further, the present invention is not limited to automobiles, and may be applied to other devices that connect electric components to each other and have a fixed member and a member that can be opened and closed with respect to the fixed member.

Further, in the present embodiment, an example is shown in which the coil spring 21 is provided outside the main body 16, but the present invention is not limited to this.
It may be provided inside the main body as shown in FIG. In FIG. 4, a pressing piece (contact member) 31 having a C-shaped cross section is provided in the main body 16.
Are provided movably, and the convex portion 31 of the pressing piece 31 is provided.
a abuts against the curved inner peripheral portion of the FFC 15 and has a concave portion 31.
One end of a compression spring (biasing member) 32 is attached to b. The other end of the compression spring 32 is locked to the inner peripheral wall surface of the main body 16.
In the retracting direction.

Even with this configuration, when the glass hatch 13 shifts from the closed position to the open position, the FFC 15
The pressing piece 32 is moved in the drawing direction from the imaginary line of FIG. 4 to the solid line against the urging force of 32, and is pulled out of the main body 16 with this movement to allow the opening of the glass hatch 13. Can be. When the glass hatch 13 is shifted from the open state to the closed state, the pressing piece 31 is urged by the compression spring 32 and moves in the direction indicated by the imaginary line in FIG. 4, so that the glass hatch 13 shifts to the closed state. As a result, the FFC 15 is drawn into the main body 16 so as to be curved by the pressing piece 31, and the closure of the glass hatch 13 can be allowed.

[0025]

According to the first aspect of the present invention, a flat wire harness is used in place of the curl cord, and the flat wire harness is housed in the main body as the opening / closing member is opened / closed or pulled out from the main body. Since the opening and closing of the opening and closing member is permitted, even if the number of electric wires increases, only the width of the flat wire harness increases, so that an increase in the opening and closing load of the opening and closing member can be prevented. At the same time, since no slack occurs even after long-term use, stable opening and closing can be performed.

According to the second aspect of the present invention, the cost can be reduced as compared with the curl cord. According to the third aspect of the present invention, since the contact member is urged in the drawing direction of the flat wire harness by the urging member contacting the curved inner peripheral surface of the flat wire harness, the flat wire harness is always in the main body. The flat wire harness can be reliably pulled into the main body even when the opening / closing amount of the opening / closing member is large, and a highly reliable flat wire harness mounting structure can be obtained. be able to.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a flat wire harness mounting structure according to the present invention, showing a state where the flat wire harness is mounted on a vehicle.

2A is an external view of a flat wire harness mounting structure according to an embodiment, and FIG. 2B is a cross-sectional view thereof.

FIG. 3A is a diagram showing a state of a flat wire harness when the glass hatch of one embodiment is closed, and FIG.
FIG. 3 is a diagram showing a state of a flat wire harness when a glass hatch is opened.

FIG. 4 is a cross-sectional view showing another embodiment of a flat wire harness mounting structure.

FIG. 5 is a diagram showing a state in which the curl cord is attached to a vehicle.

6A is a diagram illustrating a state of a curl cord when the glass hatch is closed, and FIG. 6B is a diagram illustrating a state of the curl code when the glass hatch is opened.

[Explanation of symbols]

 12 Back door (fixing member) 13 Glass hatch (opening / closing member) 15 FFC (flat wire harness) 16 Main body 19, 31 Pressing piece (contact member, retracting means) 21 Coil spring (biasing member, retracting means) 32 Compression spring ( Urging member, retracting means)

Claims (3)

[Claims] 1. A flat wire harness having electrical wiring attached to a flexible insulating film substrate in a direction in which the film substrate extends.
A flat wire harness mounting structure interposed between a fixing member and an opening / closing member movable between a closed position for closing the fixing member and an open position inclined to open the fixing member, wherein the fixing member Or provided on one of the opening and closing members,
A main body capable of accommodating the flat wire harness in a curved state, and a retracting means provided in the main body and capable of retracting the flat wire harness into the main body so as to bend into the main body, wherein the opening / closing member is opened from a closed position. When the flat wire harness is pulled out of the main body when shifting to the position, the flat wire harness is drawn into the main body by the drawing means when the opening / closing member shifts from the open position to the closed position. Flat wire harness mounting structure. 2. The flat wire harness according to claim 1, wherein said flat wire harness is an FFC (fl
2. The flat wire harness mounting structure according to claim 1, comprising an exible flat cable). 3. The flat wire harness according to claim 1, wherein said retracting means is provided movably in the main body, and is capable of abutting against a curved inner peripheral surface of said flat wire harness; The flat wire harness mounting structure according to claim 1, further comprising: a biasing member that biases the flat wire harness.