JP4220325B2 - Wire surplus length absorber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire surplus length absorbing device that is disposed on the vehicle body side of an automobile, for example, connects a wire to an open / close window glass, and absorbs the surplus length of the wire accompanying opening and closing.
[0002]
[Prior art]
For example, as described in Patent Document 1, a heater wire may be attached to a rear window glass that can be opened and closed, and power may be supplied to the heater wire. As the window glass opens and closes, the power supply line hangs down, so an electric wire surplus absorption device for that purpose may be provided.
[0003]
[Patent Document 1]
JP-A-8-108750 [0004]
[Problems to be solved by the invention]
However, the window glass of an automobile is not a flat surface but often has a gently curved surface, so if the shape of the surplus absorption mechanism is not devised, it becomes an obstacle to opening and closing the window glass, and the space cannot be used effectively. The thickness of the car body increases.
[0005]
The object of the present invention is to solve the above-described problems, and to provide a case having a curved surface corresponding to a moving body having a curved surface, and to move by bending and wiring a flat cable in the case in a U-shape. An object of the present invention is to provide an extra wire length absorbing device adapted to the body.
[0006]
[Means for Solving the Problems]
Electric wire excess length absorbing device according to the present invention for achieving the above object, the extra length of the feed line for feeding the heating wire of the opening and closing the window glass moves along the curved surface direction has a curved surface used in automobile door in electric wire excess length absorbing device which absorbs part, a plurality of first power supply flat cable connected to the heating wire, the extra length portion of the have a curved surface along the curved surface of the closing window glass the feed line An elongated case that is absorbed inside and disposed along the opening and closing direction of the open / close window glass , and a sliding connection part that moves along the curved surface of the case and connects the first feeding flat cable from the outside, a fixed connection unit fixed to a surface of the casing opposite the sliding connection section, and a plurality of second power supply for a flat cable connected from the outside to the fastening interface, disposed within said casing Consists of a few sheets of surplus length absorbing flat cable, the sliding connecting portion and between the fixed connecting part connected by the excess length absorbing flat cable in said casing, said flat cable excess length absorbing the said case In the opposite direction inside each U-shaped symmetrically divided and elastically bent and routed in a loop shape, and moved along the inner curved surface of the case according to the movement of the sliding connection part, The first and second feeding flat cables and the surplus length absorbing flat cable are integral flat cables, and the direction is changed by bending at the sliding connection portion and the fixed connection portion. To do.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the illustrated embodiment.
FIG. 1 is a schematic configuration diagram showing an example applied to an open / close window glass 2 provided on a back door 1 of an automobile and provided with a heating wire. FIG. 1 shows a state in which a window glass 2 having a curved surface is lowered, and a surplus length absorber 3 is disposed in the back door 1 along the opening / closing direction of the window glass 2. Power is supplied from the surplus length absorbing device 3 to the moving body side connector 5 of the window glass 2 through the power feeding line 4, and the surplus length absorbing device 3 is connected to the power feeding line 7 from the door side connector 6 in the back door 1. . Moreover, FIG. 2 has shown the state which raised the window glass 2. As shown in FIG.
[0008]
3 is a perspective view of the surplus length absorbing device 3, and FIG. 4 is a perspective view of the surplus length absorbing device 3 with a part of the case 11 removed. The case 11 is made of metal or synthetic resin, and the surplus length of the electric wire. Built-in mechanism to absorb
[0009]
The case 11 has an elongated shape with a rectangular cross section, and two members 11a and 11b having a "U" cross section are assembled in a casing shape with bolts 12 at three locations along the longitudinal direction. The mating surfaces 13 a and 13 b on both sides of the members 11 a and 11 b are both curved surfaces having the same curvature as the curved surface of the window glass 2. A box-shaped fixing member 14 for introducing the feeder 7 made of a flat cable into the case 11 is fixed to the mating surface 13 a of the case 11. A box-shaped sliding member 16 is attached to the opposite mating surface 13b along a slit 15 provided along the case 11 so as to be slidable.
[0010]
The feeder 7 introduced into the case 11 via the fixing member 14 is, for example, five long flat cables 17a to 17e stacked on the outside of the case 11, and the flat cables 17a to 17c. The flat cables 17d and 17e are changed in direction by bending as shown in FIG. 4 and are divided symmetrically in opposite directions in the case 11, respectively bent in a U shape and routed in a loop shape as a whole. ing.
[0011]
These flat cables 17a to 17e are gathered again on the sliding member 16 of the mating surface 13b through this loop portion and are overlapped, and are supplied to the outside from the sliding member 16 while being overlapped by changing the direction by bending. It is led out as an electric wire 4 and passes through a flexible bellows-shaped protective tube 18 and is connected to the movable body side connector 5 of the window glass 2 as a transition portion. In addition, in the protective tube 18, a metal spring board material can also be put along the flat cables 17a-17e as needed.
[0012]
The flat cables 17a to 17e are bent in the fixing member 14 and the sliding member 16, and for example, pins (not shown) provided in the fixing member 14 and the sliding member 16 are used as insulating sheets of the flat cables 17a to 17e. By being inserted, the fixing member 14 and the sliding member 16 are fixed.
[0013]
In the case 11, the flat cables 17 a to 17 e are developed in a loop shape to the left and right, but spaces are provided on both sides of the case so that they can follow the case 11 in response to the left and right sliding of the sliding member 16. A reasonable margin is provided. For the U-shaped bend of the flat cables 17a to 17e in the case 11, a large curvature radius is selected so as not to exceed the elastic limit.
[0014]
Further, a metal spring plate 19 is provided outside the flat cables 17a to 17e in the case 11 as shown in FIG. 5, and the flat cables 17a to 17e are protected and elastic force is applied to the flat cables 17a to 17e. Is given. The flat cables 17a to 17e, including the metal spring plate material 19, are made larger in length toward the outer flat cable so that interference such as friction with the inner flat cable is reduced.
[0015]
The metal spring plate 19 in the case 11 serves to prevent the flat cables 17a to 17e from sliding on the inner surface of the case 11 and causing damage or poor insulation, but the flat cables 17a to 17e are movable. However, the metal spring plate material 19 can be omitted if there is no fear of damage or the like and it has sufficient elastic force.
[0016]
As shown in FIG. 6, the sliding member 16 is provided with a width detail 16 a at the upper and lower intermediate portions, and the width detail 16 a is fitted into the slit 15 along the mating surface 13 b of the case 11 to slide. It has been made possible. In the upper sliding portion 16b located inside the case 11, as shown in FIG. 7, the flat cables 17a to 17e are front and rear parallel to the sliding direction from the state of the loop shape A with the surface facing up and down. In the state of B bent toward the direction, it falls in the width detail 16a to reach the lower sliding portion 16c, and in the lower sliding portion 16c, the surface is directed in the left-right direction perpendicular to the sliding direction, It is led out from the outlet 16d of the sliding member 16 in the state of C bent as a whole in the horizontal direction.
[0017]
In the embodiment, even if the window glass 2 is opened and closed, the case 11 fixed to the back door does not move. Therefore, when the movable body side connector 5 moves as the window glass 2 rises, the protective tube 18 is interposed. Then, the sliding member 16 slides along the slit 15 of the case 11 as shown by a one-dot chain line in FIG. At this time, the flat cables 17a to 17e in the case 11 move in the case 11 and follow the vertical movement of the sliding member 16 while maintaining the loop shape.
[0018]
In this case, if the length of the flat cables 17a to 17e of the feeder line 4 which is a crossing part protected by the protective tube 18 is made long and can be bent elastically, the sliding member 16 and the window A margin can be provided between the movable body side connectors 5 of the glass 2, and no excessive tension is applied to the flat cables 17a to 17e in this portion. In addition, even if the sliding member 16 moves at the exit 16d from the sliding member 16 to the outside by arranging the metal spring plate material 19 along the flat cables 17a to 17e in the protective tube 18 as described above, the flat cable 17a-17e does not bend excessively and durability improves.
[0019]
In addition , in the right and left U-shaped parts in the case 11, it is preferable that the number of flat cables is substantially the same in order to balance the stress.
[0020]
Further, it has already been demonstrated in various electric devices that the repeated bending of the flat cable has sufficient durability unless it is less than a predetermined radius of curvature.
[0021]
Incidentally, in the embodiment, the mating surface 13a of the case 11, but the 13b both curved, only the curved mating surface 13b of the window glass 2 side, the other mating surface 13a may be flat.
[0022]
【The invention's effect】
As described above, the wire surplus length absorption device according to the present invention has a curved surface matched to a moving body having a curved surface, and the flat cable is bent in a U shape in the case, so that the space is effective. In addition, the frictional force between the flat cables is reduced and the operation force is reduced.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a state in which a window glass is lowered.
FIG. 2 is a configuration diagram in a state where a window glass is raised.
FIG. 3 is a perspective view of the embodiment.
FIG. 4 is a perspective view of a state where a part of the case is removed.
FIG. 5 is an explanatory diagram of a flat cable in a case.
FIG. 6 is a perspective view of a sliding member.
FIG. 7 is an explanatory diagram of a bent state of a flat cable in a sliding member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Back door 2 Window glass 3 Surplus length absorber 4, 7 Feed line 5 Moving body side connector 6 Door side connector 14 Fixing member 15 Slit 16 Sliding members 17a-17e Flat cable 18 Protection tube 19 Metal spring plate material

Claims (4)

In a wire surplus length absorption device that absorbs a surplus length portion of a power supply line that feeds a heating wire of an open / close window glass that has a curved surface and moves along the curved surface direction, which is used for an automobile door, a plurality connected to the heating wire and pieces of first power supply flat cable, the elongated which have a curved surface along the curved surface of the opening and closing the window glass to absorb inside the elongated portion of the feed line is arranged along the opening and closing direction of the closing window glass A case, a sliding connection portion that moves along the curved surface of the case and connects the first power feeding flat cable from the outside, and a fixing that is fixed to the surface of the case opposite to the sliding connection portion A sliding portion comprising a connecting portion, a plurality of second power feeding flat cables connected to the fixed connecting portion from the outside, and a plurality of surplus length absorbing flat cables disposed in the case. Part and between the fixed connecting part connected by the excess length absorbing the flat cable within the casing, resiliently the flat cable excess length absorbing is divided symmetrically to each in opposite directions U-shaped in said casing The first and second power feeding flat cables and the extra length absorbing cable are bent in a loop shape and arranged along the inner curved surface of the case according to the movement of the sliding connection portion. The flat cable is an integral flat cable, and the wire extra length absorbing device is characterized in that the direction is changed by bending at the sliding connection portion and the fixed connection portion . The electric wire surplus length absorption device according to claim 1, wherein the heating wire and the first power feeding flat cable are connected via a connector . The wire surplus length absorbing device according to claim 1, wherein the surplus length absorbing flat cable is laminated in the case. The wire surplus length absorber according to claim 1, wherein a leaf spring is bent in a U-shape along the outside of the surplus length absorbing flat cable.

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