JP2004262284A - Electric cable extra length absorber for slide door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To absorb the extra length of a flat cable by bending in U-shape and disposing on a loop in a case. <P>SOLUTION: A fixed member 5 leading in the flat cable 4 is fixed to the upper surface 1c of the slender case 1 of rectangular shape in cross section, and a slide member 6 is installed on the lower surface 1d of the case 1 so as to be slidably moved along the longitudinal direction of the case 1. On the outside of the case 1, for example, five sheets of long flat cables 4a to 4e are overlapped with each other, and inside the case 1, the flat cables 4a to 4c and the flat cables 4d and 4e are classified symmetrically in the opposite directions, bent in the U-shape, and generally routed in the loop shape. Then the flat cables 4a to 4e are collected again on the sliding member 6, and led out to the outside through the sliding member 6. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides, for example, a flexible flat cable (hereinafter referred to as a flat cable) in which a plurality of metal foil conductors are covered with an insulating sheet in a case of an extra length absorbing mechanism of an electric wire arranged between a sliding door side of a vehicle and a terminal on a vehicle body side. The present invention relates to an apparatus for absorbing an excess wire length of a slide door for arranging the excess length by arranging the excess wire length.
[0002]
[Prior art]
In order to supply power to a glass window opening / closing motor or the like in a slide door, for example, in a power supply apparatus for a slide door disclosed in JP-A-11-255041 and JP-A-11-348683, a part of the wire extra length absorption mechanism is provided. Flat cables are used by utilizing their flexibility and elasticity.
[0003]
In these extra length absorbing mechanisms, the flat cable is bent in a U-shape, and the amount of retraction is made variable to absorb the extra length associated with opening and closing the slide door.
[0004]
[Problems to be solved by the invention]
However, since the flat cables in these extra length absorbing mechanisms are bent in a U-shape only on one side, the operating force is different between the right and left rows of the flat cable, and there is a possibility of disconnection at the connection point. is there. Further, depending on the number of circuits, a large number of flat cables may need to be stacked, and the resistance may increase due to friction between the flat cables and the like, and there is also a problem that operation requires power.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to balance a stress applied to a flat cable by bending a flat cable in a case into a U-shape in a symmetrical manner and arranging the flat cable in a loop. An object of the present invention is to provide an apparatus for absorbing an excess wire length of a sliding door, which reduces friction between the sliding doors and reduces operating force.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an apparatus for absorbing excess wire length of a slide door according to the present invention is a device for absorbing excess wire length provided in the middle of a wiring structure for wiring between a slide door side and a main body side. And a fixed portion provided on one surface of the case, a sliding portion provided on the other surface, and at least two flat cables connecting the fixed portion and the sliding portion in the case. Are divided into two sides, each of which is bent in a U-shape and arranged in a loop.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in detail based on the illustrated embodiment.
FIG. 1 is a schematic perspective view, and FIG. 2 is a perspective view with a part of the case removed. Reference numeral 1 denotes a case made of metal or synthetic resin and having a built-in mechanism for absorbing an extra length of a flat cable. The door 2 is fixed along the opening and closing direction of the lower side.
[0008]
The case 1 has an elongated shape having a rectangular cross section, and two members 1a and 1b having a U-shaped cross section are assembled in a housing shape with bolts 3 at three locations along the longitudinal direction. A box-shaped fixing member 5 for introducing the flat cable 4 into the case 1 is fixed to the upper surface 1c of the case 1, and a box-shaped sliding member 6 is formed on the lower surface 1d of the case 1 in the longitudinal direction. It is attached so that it can slide along the slit 7 formed.
[0009]
The flat cable 4 introduced into the case 1 via the fixing member 5 has, for example, five long flat cables 4 a to 4 e superimposed outside the case 1, and a connector (not shown) provided on the slide door 2 side. Is connected to the door-side connector 8 that fits into the connector.
[0010]
The flat cables 4a to 4e are bent in the fixing member 5 and changed in direction to be introduced into the case 1. The flat cables 4a to 4c and the flat cables 4d and 4e are connected to the case 1 as shown in FIG. Are symmetrically divided in opposite directions, respectively, are respectively curved in a U-shape, and are arranged in a loop shape as a whole.
[0011]
These flat cables 4a to 4e are again gathered and overlapped on the sliding member 6 on the lower surface 1d via the loop portion, and are led out of the sliding member 6 as they are overlapped by the direction change by bending. , Through a bellows-shaped flexible protective tube 9, and connected to a vehicle-body-side connector 10 disposed at a lower portion of the vehicle body as a crossover portion. In addition, in the protective tube 9, a metal spring plate material can be extended along the flat cables 4a to 4e as necessary.
[0012]
The flat cables 4a to 4e are bent in the fixing member 5 and the sliding member 6, and pins (not shown) provided in the fixing member 5 and the sliding member 6 are inserted through the insulating sheets of the flat cables 4a to 4e. By doing so, it is fixed to the fixing member 5 and the sliding member 6 in a bent state.
[0013]
In the case 1, the flat cables 4 a to 4 e are unfolded in a loop shape on the left and right. However, on both sides of the flat cables 4 a to 4 e so that they can follow the sliding of the sliding member 6 in the left and right directions. Allowance is provided. For the U-shaped bending of the flat cables 4a to 4e in the case 1, a large radius of curvature is selected so as not to exceed the elastic limit.
[0014]
Further, a metal spring plate 11 is provided along the outside of the flat cables 4a to 4e in the case 1 as shown in FIG. 3 to protect the flat cables 4a to 4e and to apply elastic force to the flat cables 4a to 4e. Is given. The length of the flat cables 4a to 4e, including the metal spring plate material 11, is increased toward the outer flat cable so that interference with the inner flat cable such as friction is reduced.
[0015]
The metal spring plate material 11 in the case 1 plays a role of preventing the flat cables 4a to 4e from sliding on the inner surface of the case 1 and causing damage or poor insulation, but the flat cables 4a to 4e are movable. The metal spring plate 11 can be omitted if there is no risk of damage or the like and if it has a sufficient elastic force.
[0016]
As shown in FIG. 4, the sliding member 6 is provided with a width detail 6 a in the upper and lower middle part, and the width detail 6 a can be fitted and slid in the slit 7 along the lower surface 1 d of the case 1. It has been like that. In the upper sliding portion 6b located inside the case 1, as shown in FIG. 5, the flat cables 4a to 4e are moved from the state of the loop shape A whose surface is turned up and down to the front and rear parallel to the sliding direction. In the state of B bent in the direction, it falls in the narrow width portion 6a to reach the lower sliding portion 6c, and in the lower sliding portion 6c, the surface is turned in the left and right direction orthogonal to the sliding direction, The whole is drawn out from the outlet 6d of the sliding member 6 in a state of C bent in the horizontal direction.
[0017]
When the sliding door 2 opens and closes, the case 1 moves together. However, since the vehicle body side connector 10 does not move, the sliding member 6 moves along the slit 7 of the case 1 through the protective tube 9 substantially in a solid line in FIG. From the range indicated by the dotted line. At this time, the flat cables 4a to 4e in the case 1 can move in the case 1 as shown by the dotted lines while maintaining the loop shape, and can adjust the extra length with respect to the vehicle body side connector 10.
[0018]
In this case, if the length of the flat cables 4a to 4e of the transition section protected by the protection tube 9 is made slightly longer so that the flat cables 4a to 4e can be elastically bent, the distance between the sliding member 6 and the vehicle body side connector 10 can be increased. The flat cables 4a to 4e in this portion can be provided with a sufficient space, and no excessive tension is applied. In addition, as described above, the flat cables 4a to 4e in the protection tube 9 are provided with the metal spring plate material so that the flat cable 4a is moved even if the sliding member 6 moves at the outlet 6d from the sliding member 6 to the outside. No.-4e does not bend excessively, and the durability is improved.
[0019]
As described above, in the embodiment, a plurality of flat cables are used seamlessly from the connector 8 to the connector 10, but the flat cable is used only in the case 1, and ordinary wires are used outside the case 1. You can also. Further, the number of superposed flat cables is not particularly limited. However, it is preferable that the numbers of the left and right U-shaped portions in the case 1 are substantially the same in terms of balancing the stress.
[0020]
It has already been demonstrated in various electric devices that the flat cable has sufficient durability as long as the repeated bending of the flat cable does not fall below a predetermined radius of curvature.
[0021]
Further, an inclined portion 1e as shown in FIG. 6, for example, is provided on the lower surface of the case 1 in accordance with the shape of the sliding door, the body, or the movement of the sliding door, and the sliding member 6 is slid along the inclined portion 1e. It can also be moved.
[0022]
In the embodiment, the case where the present invention is applied to an automobile has been described. However, the present invention is not limited to a vehicle and can be used for a sliding door of a building or the like.
[0023]
【The invention's effect】
As described above, the wire slack absorbing device for a slide door according to the present invention, since the flat cables are symmetrically divided into left and right loops in the case, the frictional force between the flat cables is reduced, and the stress is also reduced. Equilibrium reduces operating force.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment.
FIG. 2 is a perspective view showing a state where a part of a case is removed.
FIG. 3 is an explanatory diagram of a flat cable in a case.
FIG. 4 is a perspective view of a sliding member.
FIG. 5 is an explanatory diagram of a bent state of a flat cable in a sliding member.
FIG. 6 is a front view of a case according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Sliding door 4a-4e Flat cable 5 Fixing member 6 Sliding member 7 Slit 8 Door side connector 9 Protection tube 10 Body side connector 11 Metal spring leaf

Claims (4)

In an electric wire excess length absorbing device provided in the middle of a wiring structure for wiring between a sliding door side and a main body side, an elongated case, a fixed portion provided on one surface of the case, and a sliding portion provided on the other surface And at least two flat cables connecting the fixed portion and the sliding portion in the case, and laying the flat cable in a U-shape in a loop shape by dividing the flat cable into two sides. Characteristic wire slack absorbing device for sliding doors. The wire slack absorbing device for a slide door according to claim 1, wherein the flat cables in the case are laminated. 3. The apparatus for absorbing excess wire length of a slide door according to claim 2, wherein the flat cable that is laminated and curved in a U-shape has a greater length as an outer flat cable. 2. The excess wire length absorbing device for a slide door according to claim 1, wherein a leaf spring is curved in a U-shape along the outside of the flat cable.

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