JP6434340B2 - Power supply mechanism - Google Patents

Description

  The present invention relates to a power feeding mechanism that feeds power, for example, to a sliding door of a vehicle via a wire harness.

  Electric parts such as a power window motor are incorporated in a sliding door used in a one-box car, a wagon car, or the like. In order to supply power to these electrical components, it is necessary to route a wire harness (wiring body) from the vehicle body to the slide door and to allow the wire harness to follow the opening and closing of the slide door.

  On the other hand, if the power supply mechanism of the sliding door is reduced in size or the number of circuits of the wire harness is increased, the rigidity of the wire harness increases due to the increase in the number of circuits, and it is necessary to store the increased rigidity of the wire harness in a narrow case. As a result, since it is difficult for the wire harness to slide smoothly in the case, there has been a limit to the increase in the number of circuits and the miniaturization of the case. Therefore, as a countermeasure, there is a power feeding structure disclosed in, for example, Japanese Patent Laid-Open No. 10-278588 (Patent Document 1).

Japanese Patent Laid-Open No. 10-278588

  In the conventional power supply structure of Patent Document 1, a cable (wire harness) is wound on the same axis as the rotation axis of a drive belt that drives a slide door. For this reason, there is a problem that a space is required in the height direction (rotational axis direction), and the floor surface of the vehicle becomes higher correspondingly. Further, since the winding portion for winding the cable rotates in synchronization with the rotation axis of the drive belt, the rotation direction and the amount of rotation cannot be adjusted to an appropriate one, and it is difficult to handle as the power.

  An object of the present invention is to reduce the size of a power feeding mechanism that feeds power, for example, to a sliding door via a wire harness, and to cope with the multi-circuit of the wire harness.

  According to another aspect of the present invention, there is provided a power supply mechanism that is slidable with respect to a base, a rotational power source that generates rotational power, and the rotational power generated by the rotational power source is slid onto the slide structure. A power feeding mechanism that is applied to a slide mechanism including a drive belt that transmits power as a force, and that feeds power to the slide structure via a wire harness, the movement of a moving end fixed to the slide structure side in the wire harness Along with the surplus length absorbing portion that absorbs the slack portion of the wire harness and at least one pulley of a plurality of pulleys that spans the drive belt, the rotational force of the drive pulley is used as the surplus length. A power transmission member that transmits to the absorption portion, and the rotational power of the rotational power source is forwarded via the drive pulley and the power transmission member. By transmitting to the surplus length absorbing portion, the surplus length absorbing portion absorbs the surplus length portion between the fixed end on the surplus length absorbing portion side of the wire harness and the moving end. And

  A power supply mechanism according to a second aspect is the power supply mechanism according to the first aspect, wherein the extra length absorbing portion is connected to the drive pulley via the power transmission member, and rotates from the driven shaft. A rotating member that receives power, and is configured to wind up the extra length of the wire harness around the rotating member by the rotation of the rotating member.

  The power feeding mechanism according to claim 3 is the power feeding mechanism according to claim 2, wherein the power transmission member is a timing belt stretched between the driving pulley and the driven shaft of the rotating member. It is characterized by.

  The power feeding mechanism according to claim 4 is the power feeding mechanism according to claim 2, wherein the power transmission member is a gear portion provided between the drive pulley and the driven shaft of the rotating member. Features.

  According to the first to fourth aspects of the present invention, for example, the wire harness is moved using power for sliding a slide structure such as a power slide door, so that the power feeding mechanism can be reduced in size and multi-circuited. . Also, both ends of the wire harness are fixed to the slide structure side and the wire harness surplus length absorbing portion, and when the wire harness is accommodated in the wire harness surplus length absorbing portion according to the reciprocating movement of the slide structure, the wire harness is also used. Even when the wire harness is pulled out from the surplus length absorbing portion, both ends of the wire harness are moved simultaneously by the rotational power source and the slide structure, so that unnecessary tension is not applied to the wire harness and the bending durability is improved.

1 is an overall perspective view of a power supply device to which a power supply mechanism of the present invention is applied and a slide door of a slide mechanism in a fully open state. 1 is an overall perspective view of a power supply device to which a power supply mechanism of the present invention is applied and a slide door of a slide mechanism in a fully closed state. It is a principal part enlarged view of FIG. It is a principal part enlarged view of the drive pulley, timing belt, and extra length absorption part of the electric power feeder of embodiment. It is a figure which shows operation | movement of the principal part of the electric power feeder of embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 is an overall perspective view of a power supply apparatus to which the power supply mechanism of the present invention is applied and a slide door of a slide mechanism in a fully opened state, FIG. 2 is an overall perspective view of the power supply apparatus and a slide door of a slide mechanism in a fully closed state, FIG. These are the principal part enlarged views of a drive pulley, a timing belt, and a surplus length absorption part.

  The power supply apparatus 10 of this embodiment is applied to a slide mechanism 10A that opens and closes a slide door (slide structure) 20 of an automobile. The power supply apparatus 10 and the slide mechanism 10A are behind a base 30 that is a door step of a vehicle. It is mounted on the (lower side). The sliding mechanism 10 </ b> A extends in the sliding direction of the sliding door 20 provided to be slidable with respect to the base 30, the rotational power source 1 that generates rotational power, and the rotational power of the rotational power source 1. Drive belt 2 that conveys a sliding force to the slide door 20, a plurality of pulleys 3 (3a, 3b, 3c, 3d) that stretch the drive belt 2, and a slightly curved slide door rail that extends in the front-rear direction of the vehicle 4 and a slide door arm 5 that connects the slide door 20 and the slide door rail 4 to each other. The slide door rail 4 is a groove-shaped rail having a U-shaped cross section, and a part of the slide door arm 5 is slidably held in the U-shaped groove. The slide door arm 5 is connected to the drive belt 2.

  The rotational power source 1 is provided adjacent to an end of the sliding door rail 4 on the vehicle front side. The rotational power source 1 includes a power slide door motor 11, a speed reduction unit 12 that decelerates the rotation of the power slide door motor 11, and a sprocket 13 that outputs rotational power via the speed reduction unit 12.

  As shown in FIG. 1, the drive belt 2 includes a pulley 3a provided on the front side of the vehicle, a pulley 3d provided on the rear side of the vehicle, a sprocket 13 of the rotational power source 1, a pulley 3c, a pulley It is stretched endlessly between 3b. As a result, the vehicle extends and extends substantially in the front-rear direction of the vehicle so as to extend in the sliding direction of the slide door 20.

  The power feeding device 10 includes a wire harness 6 that feeds power to the slide door 20, a surplus length absorbing portion 7 that absorbs a slack portion of the wire harness 6, and one pulley (drive pulley) of the plurality of pulleys 3. A timing belt (power transmission member) 8 (see FIG. 3) that transmits the rotational power 3a (rotational power of the rotational power source 1) to the surplus length absorber 7.

  The wire harness 6 is a flexible flat harness composed of a plurality of electric wires (not shown), and one end is fixed to the slide door arm 5 and connected to the slide door 20 via a connector (not shown). The other end of the wire harness 6 is connected to the vehicle floor side (battery side) through a surplus length absorbing portion 7 by a connector (not shown). The side fixed to the slide door arm 5 of the wire harness 6 is a moving end 6 </ b> A that moves together with the slide door 20. Further, the end on the surplus length absorbing portion 7 side is a fixed end 6B. That is, since the surplus length absorbing portion 7 is fixed to the base 30, the surplus length absorbing portion 7 is substantially in a fixed relationship with the fixed end 6 </ b> B of the wire harness 6.

  The surplus length absorbing portion 7 is provided adjacent to the end portion of the slide door rail 4 on the vehicle front side. The surplus length absorbing portion 7 includes a rotor (rotating member) 72 having a plurality of pins 72 a on a lower surface of the vehicle in a cylindrical case 71. As shown in FIG. 3, an opening is formed at the center of the upper surface 71 a on the base 30 side of the case 71, and a large gear 73 fixed to the rotor 72 is inserted through this opening. Further, a pinion (driven shaft) 74 that meshes with the large gear 73 is rotatably provided on the upper surface 71 a of the case 71.

  As shown in FIG. 3, the timing belt 8 is stretched between a pulley 3 a provided on the front side of the vehicle and a pinion 74 of the surplus length absorbing portion 7. When the pulley 3a is rotated by this movement, this rotational power is transmitted to the pinion 74. The pinion 74 transmits the rotational power to the rotor 72 via the large gear 73, and the rotor 72 rotates.

  As described above, the extra length absorbing portion 7 winds the extra length portion of the wire harness 6 around the plurality of pins 72 a provided on the rotor 72 as the rotor 72 rotates. The pinion 74 and the large gear 73 reduce the rotation of the pulley 3a and transmit it to the rotor 72. By setting the gear ratio of the pinion 74 and the large gear 73, the rotational speed of the pulley 3a, that is, the drive belt 2 ( And the moving speed of the sliding door arm 5) and the winding speed of the wire harness 6 in the surplus length absorbing portion 7 can be synchronized.

  When the slide door 20 is closed from the fully opened state in FIG. 1, the operation is as follows. At this time, the main part rotates and moves as shown by the arrows in FIG. First, by the operation of the power slide door motor 11, one side of the drive belt 2 near the slide door arm 5 starts to move toward the front side of the slide door 20 (the front side of the vehicle). At this time, since the slide door arm 5 also moves simultaneously, the moving end 6 </ b> A of the wire harness 6 fixed to the slide door arm 5 is pushed toward the surplus length absorbing portion 7. As the drive belt 2 moves, the pulley 3a starts rotating and is transmitted to the timing belt 8 connected thereto. The power transmitted by the timing belt 8 is transmitted to the surplus length absorbing portion 7 where the surplus length portion of the wire harness 6 is wound up.

  When the sliding door 20 is opened from the fully closed state shown in FIG. 2, the following operation is performed. At this time, the main part rotates and moves in the direction opposite to the arrow shown in FIG. First, by the operation of the power slide door motor 11, one side of the drive belt 2 near the slide door arm 5 starts to move toward the rear side of the slide door 20 (the rear side of the vehicle). At this time, since the slide door arm 5 also moves simultaneously, the moving end 6 </ b> A of the wire harness 6 fixed to the slide door arm 5 is pulled away from the surplus length absorbing portion 7. As the drive belt 2 moves, the pulley 3a starts rotating and is transmitted to the timing belt 8 connected thereto. The power transmitted by the timing belt 8 is transmitted to the surplus length absorbing portion 7, the wire harness 6 wound around the surplus length absorbing portion 7 is developed, and the moving end 6 </ b> A together with the slide door arm 5 is on the rear side of the door. Move to the rear of the vehicle.

  Thus, in the slide mechanism, the power harness door motor 11 of the rotary power source 1 for sliding the slide door 20 is used to move the wire harness 6 when the slide door 20 is opened and closed. Further, since a separate line motor or the like for moving the wire harness 6 is not required, the power feeding mechanism can be reduced in size. Further, the rotational power of the power slide door motor 11 is sufficient to move the slide door 20, and sufficient power can be obtained to move the wire harness 6 having increased rigidity due to the multi-circuit construction. Therefore, it becomes possible to cope with the multi-circuit.

  Further, both ends of the wire harness 6 are fixed to the slide door arm 20 side and the surplus length absorbing portion 7, and when the wire harness 6 is accommodated in the surplus length absorbing portion 7 according to the reciprocating movement of the slide door 20, Even when the wire harness 6 is pulled out from the surplus length absorbing portion 7, both ends of the wire harness 6 are moved simultaneously by the rotary power source 1 and the slide door 20, so that unnecessary tension is not applied to the wire harness 6 and bending durability is improved. .

  In the embodiment, the case where the power transmission member is a timing belt has been described. However, the power transmission member is a gear portion provided between a pulley 3a as a drive pulley and a pinion 74 as a driven shaft that drives the rotor 72. It may be.

  Although the extra length absorption part 7 of embodiment is a winding type which winds the wire harness 6 around the rotor 72, for example, the rotating member rotated by a power transmission member is arranged close to the side surface in a rectangular case Then, the wire harness 6 may be sandwiched between the rotating member and the side surface of the case, and the wire harness 6 may be drawn into the case with the rotation of the rotating member by the frictional force between the rotating member and the wire harness 6. In this case, the extra length portion drawn into the case may be formed by U-shaped or S-shaped folding.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to the said embodiment. That is, those skilled in the art can implement various modifications in accordance with conventionally known knowledge without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as the configuration of the power feeding mechanism of the present invention is provided.

  For example, in the above embodiment, the vehicle door step is used as the base and the slide door is used as the slide structure. However, the present invention is not limited to this. For example, the base may be a building and the sliding structure may be a door attached to the building.

  Moreover, in the said embodiment, although it was set as the structure which stretches the drive belt 2 endlessly, it is not limited to this, It extends in the sliding direction of a sliding door (door arm 7), and drives this. If it is possible, it is not limited to this. For example, the drive belt 2 can be wound up at both ends so as to extend in the sliding direction of the slide door arm 5, and the drive belt 2 is wound up at either one end to It is good also as a structure which moves.

10 Power Feed Device 20 Slide Door (Slide Structure)
10A Slide mechanism 30 Base 1 Rotation power source 11 Power slide door motor 12 Deceleration unit 13 Sprocket 2 Drive belt 3a Pulley (drive pulley)
4 sliding door rail 5 sliding door arm 6 wire harness 6A moving end 6B fixed end 7 surplus length absorbing portion 71 case 72 rotor (rotating member)
73 Large gear 74 Pinion (driven shaft)
8 Timing belt (power transmission member)

Claims (4)

A slide structure provided slidably with respect to the base; a rotational power source that generates rotational power; and a drive belt that transmits the rotational power generated by the rotational power source to the slide structure as a sliding force. A power supply mechanism that is applied to a slide mechanism provided to supply power to the slide structure via a wire harness,
A surplus length absorbing portion that absorbs a surplus length portion that becomes slack of the wire harness as the moving end fixed to the slide structure side in the wire harness moves;
A power transmission member that transmits the rotational force of the drive pulley to the surplus length absorbing portion using at least one pulley of the plurality of pulleys that spans the drive belt as a drive pulley;
With
The rotational power of the rotational power source is transmitted to the surplus length absorbing portion via the drive pulley and the power transmission member, so that the surplus length absorbing portion has a fixed end on the surplus length absorbing portion side of the wire harness. A power feeding mechanism characterized in that the extra length portion between the movable end and the moving end is absorbed.   The surplus length absorbing portion includes a driven shaft connected to the drive pulley via the power transmission member, and a rotating member that receives rotational power from the driven shaft, and the rotation of the rotating member causes the wire harness of the wire harness to rotate. The power feeding mechanism according to claim 1, wherein the surplus portion is wound around the rotating member.   The power feeding mechanism according to claim 2, wherein the power transmission member is a timing belt stretched between the driving pulley and the driven shaft of the rotating member.   The power feeding mechanism according to claim 2, wherein the power transmission member is a gear portion provided between the drive pulley and the driven shaft of the rotating member.

Images