JP2005289601A - Flat cable winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat cable winding device for reducing sliding and bounding noises of a flat cable. <P>SOLUTION: The flat cable winding device comprises a rotor 2 turnably stored in a case 1, a coil spring 3 for rotationally energizing the rotor 2, and the flat cable 4 having one end connected to a fixed body not movable relative to the case 1 and the other end connected to a movable body movable relative to the case 1 and a longitudinal portion spirally wound on a flange portion 21 of the rotor 2. The rotor 2 is rotationally energized in the winding direction of the flat cable 4 by the coil spring 3, and the flat cable 4 is pulled at its movable body side to the opposite direction to the winding direction by the rotation of the rotor 2. A vibration absorbing planar body 6 and a vibration absorbing planar body 5 are laid between the side end on the upper side of the flat cable 4 wound on the flange portion 21 of the rotor 2 and the inner face of the case 1 and between the side end on the lower side and the flange portion 21, respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a flat cable winding device used to electrically connect components whose distances change.

  For example, when a part installed on the vehicle body side (fixed body) and a part installed on the door side such as a luggage door (moving body) are electrically connected with a flat cable, the door side is opened and closed. The distance between the vehicle-side component and the door-side component changes, so that an extra length portion is generated in the flat cable when the door is opened and closed. Therefore, a flat cable winding device that winds up the extra length is required.

  Conventionally, as a flat cable winding device used for the above-mentioned purpose, a moving connector is attached to one end of the flat cable, a fixed connector is attached to the other end, and an intermediate portion in the length direction of the flat cable is taken up as a take-up reel. The flat cable on the moving connector side from the intermediate part is wound on the take-up reel, and the take-up reel is urged in the direction to be taken up by the take-up spring. A cable is known in which a cable is loosely wound around a rotating shaft outside a winding reel to leave room for winding and the winding reel is rotatably accommodated in a case (see, for example, Patent Document 1). .

JP-A 63-176272

  The flat cable winding device described above has the following problems. That is, when the flat cable is pulled out from the case and wound up, if the side end of the flat cable slides on the inner surface of the case, a sliding sound is generated. Further, when the side end portion of the flat cable is struck against the inner surface of the case or the like by vibrations such as when the automobile travels on a rough road, so-called dance noise is generated. This dancing sound is particularly problematic when the flat cable is loosely wound.

  An object of the present invention is to provide a flat cable winding device in which sliding sound and dancing sound of a flat cable are reduced.

A flat cable winding device according to the present invention includes a rotor rotatably accommodated in a case fixed to a mounted portion, and a coil spring that urges the rotor to rotate. And a flat cable in which one end side is connected to the fixed body, the other end side is connected to the moving body, and a part in the longitudinal direction is spirally wound on the flange portion of the rotor. In the flat cable winding device that urges the coil spring to rotate in the coil winding direction and pulls the moving body side of the flat cable in the direction opposite to the winding direction by the rotation of the rotor, the coil is wound on the flange portion of the rotor. Between the side end of the flat cable and the inner surface of the case and / or the side end of the flat cable wound around the rotor It is characterized in that by interposing vibration damping planar element between the flange portion of the terpolymer.
Here, the vibration-proof surface-like body means a sheet or plate-like body that has elasticity and absorbs impact, vibration, and sound to prevent transmission to others.
With such a configuration, when the flat cable wound in a spiral shape moves in the winding device, the side end portions on both sides of the flat cable hit the elastic vibration-proof surface. Therefore, it is possible to reduce sliding noise when the flat cable is pulled out from the case and when it is wound, and dance noise when the automobile travels on a rough road.

According to a second aspect of the present invention, in the first aspect of the invention, the rotor has an annular wall on the flange portion, and the annular wall is provided with a locking portion for locking the flat cable. In the flat cable, a locking member to be locked by the locking portion is attached to an intermediate portion in the longitudinal direction, and the fixed body side is wound spirally from the locking member mounting portion to the inside of the annular wall. The moving member side from the locking member mounting portion is wound outside the annular wall in the same direction as the spiral direction.
With such a configuration, the flat cable is wound in the same direction on the same surface (rotor flange surface), so the case height is lower than when winding with a step, The diameter of the case is reduced as compared with the case of winding to make a U-turn, and the case can be downsized as a whole.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the coil spring is formed by winding a deformed wire having a flat cross section into a cylindrical shape.
With such a configuration, the height of the cylindrical coil for obtaining the same spring elastic force can be reduced and the height of the case can be reduced as compared with the case where a round wire having the same cross-sectional area is used. be able to.

  The flat cable winding device of the present invention is provided between the side end portion of the flat cable wound around the rotor and the inner surface of the case and / or between the side end portion of the flat cable wound around the rotor and the flange portion of the rotor. Since the anti-vibration surface-shaped body is interposed between them, it is possible to reduce sliding noise when the flat cable is pulled out from the case and when it is wound, and dance noise when the automobile is traveling on a rough road. There is an advantage.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a horizontal cross-sectional view of an embodiment of a flat cable winding device according to the present invention, FIGS. 2A and 2B are cross-sectional views corresponding to a cross section taken along line AA in FIG. Part B enlarged view, FIGS. 3A to 3C are a plan view, a left side view, and a front view of the upper case, FIG. 4 is a perspective view of the rotor, and FIGS. 5A and 5B are respectively. They are the top view and front view of a lower case.

In this embodiment, as shown in FIGS. 1 and 2A, a rotor 2 rotatably accommodated in a case 1 fixed to a mounted portion (for example, a vehicle body), and the rotor 2 are rotated. A coil spring 3 for biasing and a moving body (for example, a luggage door) whose one end side is connected to a fixed body (for example, a connector attached to the vehicle body) that does not move with respect to the case 1 and whose other end side moves with respect to the case 1. And a flat cable 4 wound on the flange portion 21 of the rotor 2 at a part in the longitudinal direction.
In the present embodiment, the rotor 2 is rotated and biased by the coil spring 3 in the winding direction of the flat cable 4 (right rotation direction in FIG. 1), and the rotor 2 is rotated in the direction opposite to the rotation biasing direction of the coil spring 3. Then, the flat cable 4 is pulled out in the direction opposite to the winding direction.

The case 1 includes an upper case 11 and a lower case 12.
As shown in FIG. 2A, the upper case 11 is provided with a cylindrical inner annular wall 11a and an outer annular wall 11b that are concentric. In addition, as shown in FIGS. 1 and 3, the upper case 11 is provided with a fixed body side outlet 11c for leading the fixed body side of the flat cable 4 to the outside on the top plate 11d in the radial direction. A U-shaped movable body side outlet 11e (see FIGS. 3A and 3C) for leading the movable body side of the flat cable 4 to the outside is provided so as to protrude from the outer annular wall 11b.
As shown in FIG. 2A, the lower case 12 is provided with a cylindrical inner annular wall 12 a and an outer annular wall 12 b that are concentric. As shown in FIGS. 2A and 5, the inner annular wall 12 a is composed of an outer peripheral wall of a cylindrical convex portion divided in two. Further, as shown in FIG. 5, the lower case 12 is provided with a flat plate-like moving body side outlet 12d that leads the moving body side of the flat cable 4 to the outside so as to protrude from the outer annular wall 12b.
As shown in FIG. 2A, the upper case 11 and the lower case 12 are configured such that the outer annular wall 11b of the upper case 11 and the outer annular wall 12b of the lower case 12 are mutually locked by locking portions 11f and 12e. The case 1 is formed, and as shown in FIG. 1, the movable body side outlet 11e and the movable body outlet 12d are combined to form the movable body outlet.

  As shown in FIGS. 2A and 4, the rotor 2 is provided so that a cylindrical inner annular wall 22 and an outer annular wall 23 are concentric. Inside the inner annular wall 22, as shown in FIG. 2, an annular wall 24 made up of an outer peripheral wall of a cylindrical convex portion divided in two is provided. The annular wall 24 has the same diameter as the inner annular wall 12 a of the lower case 12. As shown in FIG. 1, the outer annular wall 23 is provided with a locking portion 23 a for leading the flat cable 4 from the inside to the outside and locking it.

  In the present embodiment, the rotor 2 is mounted concentrically on the lower case 12. That is, as shown in FIG. 2A, the inner annular wall 12a of the lower case 12 is inserted into the inner annular wall 22 of the rotor 2, and the coil spring 3 is connected to the outer peripheral surface of the inner annular wall 12a of the lower case 12 and the rotor 2. Is vertically wound around the outer peripheral surface of the annular wall 24. The coil spring 3 is formed by winding a rectangular wire with a rectangular cross section so that the long side surfaces overlap. One end 3 a of the coil spring 3 is fastened to a gap 12 c provided in the cylindrical projection divided into two parts of the lower case 12, and the other end 3 b is fastened to a gap 25 provided in the divided cylindrical convex part of the rotor 2. It has been. In this state, the rotor 2 is urged to rotate in the rotational direction (right rotational direction in FIG. 1) in which the flat cable 4 is wound around the lower case 12 by the coil spring 3.

  2A, the upper case 11 is concentrically mounted on the rotor 2, and the inner annular wall 22 of the rotor 2 is inserted into the inner annular wall 11a of the upper case 11 so as to rotate. It is possible to fit. As shown in FIG. 2B, the inner annular wall 11a has an upper inner diameter d2 smaller than a lower inner diameter d1, and an intermediate portion having a smaller inner diameter as it goes upward. The outer diameter d2 of the upper portion is smaller than the outer diameter d1 of the lower portion, and the outer diameter of the intermediate portion becomes smaller as it goes upward, and an annular gap 9 is formed between the inner annular wall 11a and the inner annular wall 22. ing.

  Further, as shown in FIG. 2 (a), a vibration-proof surface-like body 5 made of a hollow disk-like elastic material is attached on the surface of the flange portion 21 of the rotor 2, and the upper case An anti-vibration surface body 6 made of a resilient material having a hollow disk shape is also attached to the inside of the 11 top plates 11d (between the inner annular wall 11a and the outer annular wall 11b).

As shown in FIG. 1, the flat cable 4 has an intermediate portion (fixed portion 4a) in the longitudinal direction fixed to the inner annular wall 11a of the upper case 11 with a pressing member 11g. Further, a locking member 7 for locking to the locking portion 23a of the rotor 2 is provided at a portion (an anchoring portion 4b) separated from the fixed portion 4a of the flat cable 4 by a predetermined distance as will be described later. Is attached.
The fixed body side from the fixed portion 4 a of the flat cable 4 is led out to the outside from the fixed body side outlet 11 c of the upper case 11.
Further, from the fixed portion 4 a to the mooring portion 4 b of the flat cable 4, it loosens along the inner peripheral surface of the outer annular wall 23 of the rotor 2 from the outer peripheral surface of the inner annular wall 11 a of the upper case 11 on the flange portion 21 of the rotor 2. In the mooring portion 4 b, the locking member 7 is locked to the locking portion 23 a of the outer annular wall 23. In other words, as shown in FIG. 2A, the flat cable 4 of this portion is surrounded by the vibration-proof surface bodies 5 and 6 on the upper surface and the lower surface, and surrounded by the inner annular wall 11 a and the outer annular wall 23. It is wound around the annular space 8 in a spiral shape.
Further, the flat cable 4 traverses the outer annular wall 23 from the inner side to the outer side at the mooring portion 4b, the moving body side is wound around the outer surface of the outer annular wall 23 from the mooring portion 4b, and is led out from the moving body side outlet 11e. Yes.

The length L1 wound around the outer surface of the outer annular wall 23 of the flat cable 4 is the distance that the moving body is farthest from the moving body side outlets 11e and 12d (for example, a connector attached to a luggage door). However, it is set to a length equivalent to the distance that is the most distant from the vehicle body when the door is opened and closed.
The length L2 between the fixed portion 4a and the mooring portion 4b of the flat cable 4 is set to the following length. That is, when the flat cable 4 is pulled out from the movable body side outlet 11e, the locking member 7 is locked to the locking portion 23a, and the anchoring portion 4b rotates together with the outer annular wall 23 (in FIG. ), The portion between the fixed portion 4 a and the mooring portion 4 b of the flat cable 4 is wound around the inner annular wall 11 a of the upper case 11. Therefore, the length L2 is such that the anchoring portion 4b can rotate together with the outer annular wall 23 by the number of rotations of the outer annular wall 23 required to draw the flat cable 4 from the movable body side outlet ports 11e and 12d by the length L1. Set. Needless to say, the lengths L1 and L2 may be longer than the set length.

In this embodiment, when the moving body is closest to the moving body side outlet 11e, the rotor 2 is urged to rotate in the winding direction of the flat cable 4 by the coil spring 3 (right rotation direction in FIG. 1). The surplus length portion (length L1) on the moving body side from the mooring portion 4b of the cable 4 is wound around the outer surface of the outer annular wall 23, and a tension is applied. Further, in this state, the portion (length L2) between the mooring portion 4b and the fixing portion 4a of the flat cable 4 is rotated (clockwise in FIG. 1) while the fixing portion 4a is fixed. Therefore, it is wound in a loose state in the annular space 8.
When the moving body is separated from the moving body side outlet 11e, the flat cable 4 is pulled out from the moving body side outlet 11e, and the rotor 2 is unwound in the rewinding direction (in FIG. ), The extra length portion (length L1) wound around the outer surface of the outer annular wall 23 is rewound, and the portion (length) between the anchoring portion 4b and the fixing portion 4a of the flat cable 4 is unwound. L2) is wound around the outer periphery of the inner annular wall 11a in the annular space 8.
Further, when the moving body is farthest from the moving body side outlet 11e, the extra length portion (length L1) wound around the outer surface of the outer annular wall 23 is completely unwound, and the mooring portion of the flat cable 4 A portion (length L2) between 4b and the fixed portion 4a is most tightly wound around the outer periphery of the inner annular wall 11a in the annular space 8.

A characteristic of this embodiment that is different from that of the conventional example is that, as shown in FIG. 2A, a vibration-proof surface is formed on the surface of the flange portion 21 of the rotor 2 (between the inner annular wall 11a and the outer annular wall 23). An anti-vibration surface-like body 6 is attached to the inside of the top plate 11d of the upper case 11 (between the inner annular wall 11a and the outer annular wall 11b), and the body 5 is accommodated in the annular space 8 in a spiral shape. An anti-vibration surface body 5 is interposed between the lower side end portion of the flat cable 4 and the flange portion 21 of the rotor 2, and the anti-vibration surface member is provided between the upper side end portion of the flat cable 4 and the top plate 11 d. That is, the vibrating surface 6 is interposed.
With the above configuration, in this embodiment, the sliding sound when the flat cable 4 loosely and spirally accommodated in the annular space 8 is wound or loosened, or the case 1 vibrates up and down. The dance sound at the time can be reduced.

Further, in the present embodiment, the coil spring 3 is formed by winding a rectangular wire with a rectangular cross section so as to overlap the long side surface, so that it is the same as when using a round wire with the same cross sectional area. The height of the cylindrical shape for obtaining the spring elastic force can be lowered, and the height of the case 1 can be lowered.
Further, the inner annular wall 22 of the rotor 2 is inserted into the inner annular wall 11a of the upper case 11 so as to be turnable, and an annular gap 9 is formed between the inner annular wall 11a and the inner annular wall 22. Therefore, the rotational torque of the rotor 2 can be reduced as compared with the case where the clearance 9 is not provided without the eccentricity of the rotation shaft.
Furthermore, since the flat cable 4 is wound in the same direction on the same surface (the flange portion 21 surface of the rotor 2), the height of the case 1 is lower than that in the case of winding with a step, and the U The diameter of the case 1 becomes smaller than that in the case of winding to make a turn, and the case 1 can be downsized as a whole.

  The present invention is not limited to the above embodiment. For example, the vibration-proof surface-like body may be interposed only between at least one of the side end portion of the flat cable and the inner surface of the case, or between the side end portion of the flat cable and the flange portion of the rotor. The flat cable may be a bundle of a plurality of cables. Moreover, the wire used for the coil spring is not limited to a rectangular cross section, and may be a deformed wire having a flat cross section. Further, the inner annular wall of the upper case and the inner annular wall of the rotor are not limited to the shape of the embodiment as long as the gap is partially formed in the fitted state.

It is a horizontal sectional view of one embodiment of a flat cable winding device concerning the present invention. (A), (b) is sectional drawing equivalent to the AA cross section of FIG. 1, respectively, and the B section enlarged view. (A)-(c) is the top view of the upper case used for the said embodiment, a left view, and a front view, respectively. It is a perspective view of the rotor used for the said embodiment. (A), (b) is the top view and front view of a lower case which were respectively used for the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Rotor 3 Coil spring 4 Flat cable 4a Fixing part 4b Mooring part 5, 6 Anti-vibration surface-like body 7 Locking member 8 Annular space 9, 12c, 25 Crevice 11 Upper case 11a, 12a, 22 Inner annular wall 11b, 12b , 23 Outer annular wall 11f, 12e, 23a Locking part 12 Lower case 21 Flange part 24 Annular wall

Claims (3)

A rotor that is rotatably accommodated in a case fixed to the mounted portion, a coil spring that urges the rotor to rotate, one end side is connected to the fixed body, the other end side is connected to the moving body, and the longitudinal direction is A flat cable wound in a spiral shape on the flange portion of the rotor, the rotor is urged to rotate by the coil spring in the winding direction of the flat cable, and the flat cable is rotated by the rotation of the rotor. In the flat cable winding device that pulls out the moving body side in the direction opposite to the winding direction,
Anti-vibration surface between side end of flat cable wound on flange of rotor and inner surface of case and / or between side end of flat cable wound on rotor and flange of rotor A flat cable winding device characterized by interposing a shaped body. In the invention of claim 1,
The rotor has an annular wall on the flange portion, and the annular wall is provided with a locking portion for locking the flat cable,
In the flat cable, a locking member to be locked by the locking portion is attached to an intermediate portion in the longitudinal direction, and the fixed body side is wound spirally inside the annular wall from the locking member mounting portion. A flat cable winding device, wherein the moving member side is wound from the stop member mounting portion to the outside of the annular wall in the same direction as the spiral direction.   The flat cable winding device according to claim 1 or 2, wherein the coil spring is formed by winding a deformed wire having a flat cross section into a cylindrical shape.

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