JP2010236243A - Drive unit of power slide apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the layout property of a drive unit. <P>SOLUTION: This drive unit 33 of the power slide apparatus automatically opens/closes the slide door by rotatively driving a drum 59 by means of a motor body 41 so as to drive a pair of cables 31 and 32 wound around the drum 59. A pair of tensioner mechanisms 64a and 64b is assembled in positions to pull out the pair of cables 31 and 32 from the drum 59, respectively. The opening-side tensioner mechanism 64b is arranged in such a manner as to overlap a yoke 44 of the motor body 41 in the rotating shaft direction of the drum 59. Additionally, the pair of tensioner mechanisms 64a and 64b is arranged in a mutually inclined manner so that a spacing between the pair of cables 31 and 32 can become narrower as it gets away from the drum 59. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drive unit for a power slide device that automatically opens and closes a slide door provided in a vehicle.

  Conventionally, in a wagon type or one-box type vehicle, a slide door that opens and closes in the vehicle front-rear direction is provided on the side of the vehicle body so that passengers can easily get on and off and load and unload luggage. A center rail (guide) includes a linear portion extending in the vehicle front-rear direction and a pull-in portion that curves toward the vehicle interior side from the vehicle front side end portion of the linear portion at the upper and lower central portion behind the entrance / exit on the vehicle body side portion. Rail) is fixed. On the other hand, a roller unit that is movably mounted on a center rail is attached to the center of the slide door on the vehicle rear side. The sliding door is opened and closed in a sliding manner as the roller unit moves in the vehicle longitudinal direction along the center rail. In other words, when the roller unit is guided to the straight portion of the center rail, the sliding door is opened, and when the roller unit is guided to the drawing portion of the center rail, the sliding door is drawn into the vehicle interior to be closed. .

  In order to facilitate the opening / closing operation of the sliding door, the vehicle is equipped with a power slide device (automatic opening / closing device) that automatically opens and closes the sliding door by a drive unit. As a power slide device, a cable type device that automatically opens and closes a slide door by pulling a cable by a drive unit is often used. The cable-type power slide device includes a vehicle body built-in type in which a drive unit is mounted on the side of the vehicle body and a door built-in type in which the drive unit is mounted on a slide door.

  The drive unit of such a power slide device includes an electric motor and a drum that is rotationally driven by the output of the electric motor. For example, as described in Patent Document 1, in a drive unit of a door built-in type power slide device, a pair of cables wound around a drum are disposed on the vehicle body side via a pulley and a roller unit arranged in the slide door. Pulled in and routed along the center rail to both ends of the center rail. Then, by winding one cable with the drum and feeding the other cable, the sliding door is pulled by the cable and automatically opens and closes.

  Some drive units include a tensioner mechanism for applying a predetermined tension to the cable. The tensioner mechanism is assembled at a drawing position of a cable routed from the drum. By applying a predetermined tension to the cable by this tensioner mechanism, loosening of the cable is suppressed and the power slide device is operated smoothly.

JP 2003-82927 A

  By the way, in the drive unit of the power slide device described in Patent Document 1, a pair of cables are drawn from both sides of the yoke so as to sandwich the yoke of the electric motor. When the tensioner mechanism is assembled to the drive unit, the tensioner mechanism is disposed on both sides of the yoke, so that the projection area of the drive unit is increased.

  Moreover, in the drive unit of the power slide device described in Patent Document 1, a pair of cables are routed from the drive unit substantially parallel to each other. Therefore, the wiring area of the outer casing through which the cable routed from the drive unit is inserted increases. That is, since the distance between the pair of outer casings is wide, the outer casing occupies a large space in the slide door. Therefore, since a large space is required for mounting the drive unit on the vehicle body or the sliding door, the layout of the drive unit is deteriorated.

  An object of the present invention is to improve the layout of the drive unit.

  The drive unit of the power slide device according to the present invention includes a motor body including a motor shaft and a yoke that rotatably supports the motor shaft, and an output shaft that is rotationally driven by the rotation of the motor shaft and is orthogonal to the motor shaft. And a pair of tensioner mechanisms that apply tension to a pair of cables wound around the drum and are assembled to the drive unit. A drive unit of a power slide device that automatically opens and closes the slide door by driving a cable of the pair, wherein one of the pair of tensioner mechanisms includes an output shaft that supports the drum with respect to the yoke It arrange | positions so that it may overlap in a direction, It is characterized by the above-mentioned.

  The drive unit of the power slide device according to the present invention is characterized in that the pair of tensioner mechanisms are displaced from each other in the direction of the output shaft that supports the drum.

  In the drive unit of the power slide device according to the present invention, the one tensioner mechanism is disposed farther in the output shaft direction for supporting the drum with respect to the yoke than the other tensioner mechanism. .

  In the drive unit of the power slide device according to the present invention, the yoke has a cross-sectional oval shape including a pair of plane portions and a pair of arc portions that respectively connect both ends of the pair of plane portions, and the one tensioner mechanism includes The yoke is disposed so as to face the flat portion of the yoke in the direction of the output shaft that supports the drum.

  The drive unit of the power slide device according to the present invention is characterized in that a tensioner case that houses the tensioner mechanism is formed separately from a motor frame that houses the drive unit.

  In the drive unit of the power slide device according to the present invention, the pair of tensioner mechanisms are arranged so as to be inclined with respect to each other so that the distance between the pair of cables becomes narrower as the distance from the drum increases. And

  The drive unit of the power slide device according to the present invention includes a motor body including a motor shaft and a yoke that rotatably supports the motor shaft, and an output shaft that is rotationally driven by the rotation of the motor shaft and is orthogonal to the motor shaft. And a pair of tensioner mechanisms that apply tension to a pair of cables wound around the drum and are assembled to the drive unit. A drive unit of a power slide device that automatically opens and closes a sliding door by driving a cable of the cable, wherein the pair of tensioner mechanisms is configured such that the distance between the pair of cables decreases from the drum. Further, they are arranged so as to be inclined with respect to each other.

  According to the present invention, since one tensioner mechanism is disposed so as to overlap the yoke in the direction of the output shaft that supports the drum, the projected area of the drive unit can be reduced. Thereby, since the space at the time of mounting a drive unit in a slide door can be made small, it becomes possible to improve the layout property of a drive unit.

  According to the present invention, since one tensioner mechanism is arranged farther away from the yoke in the direction of the rotation axis of the drum than the other tensioner mechanism, the tensioner case is separated from the yoke on the one tensioner mechanism side. One tensioner mechanism and the yoke can be arranged close to each other by forming a stepped shape that bends to the right. Thereby, a drive unit can be reduced in thickness.

  According to the present invention, since one tensioner mechanism is arranged so as to face the drum rotation axis direction with respect to the flat portion of the yoke, the short direction of the yoke is the output shaft direction supporting the drum, that is, the drive unit. It arrange | positions so that it may become a thickness direction. Thereby, a drive unit can be reduced in thickness.

  According to the present invention, since the tensioner case is formed separately from the motor frame, even when one tensioner mechanism is arranged so as to overlap the output shaft direction supporting the drum with respect to the yoke, the motor body is attached to the motor frame. Can be easily magnetized in the yoke.

  According to the present invention, the pair of tensioner mechanisms are arranged so as to be inclined with respect to each other so that the distance between the pair of cables becomes narrower as the distance from the drum increases. Can do. Thereby, the layout property of a drive unit can be improved.

It is a side view which shows a part of vehicle which mounts the power slide apparatus which is one embodiment of this invention. It is a perspective view which shows the detail of a power slide apparatus. It is a rear view which shows the drive unit seen from the vehicle interior side. It is an arrow line view which shows the drive unit seen from the arrow A direction in FIG. It is sectional drawing which follows the BB line in FIG. It is sectional drawing which follows the CC line in FIG. It is a disassembled perspective view of a drive unit. It is explanatory drawing which shows the drive unit at the time of automatic opening operation | movement. It is explanatory drawing which shows the drive unit at the time of automatic closing operation | movement.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  A vehicle 11 shown in FIG. 1 is a one-box type passenger car, and a slide door 14 serving as an opening / closing body for opening and closing an opening 13 for getting on and off is provided on a side portion of the vehicle body 12. The sliding door 14 opens and closes the opening 13 by moving in the vehicle front-rear direction along a center rail 15 as a guide rail fixed to the side of the vehicle body 12.

  As shown in FIG. 2, a concave portion 12 a extending in the vehicle front-rear direction and recessed toward the vehicle interior side is formed in a substantially central portion in the vertical direction behind the opening in the side portion of the vehicle body 12. The center rail 15 is disposed in the recess 12a. The cross section of the center rail 15 is formed in a substantially rectangular shape with an opening formed outside the vehicle compartment. The center rail 15 includes a straight portion 15a that extends in the vehicle front-rear direction along the side portion of the vehicle body 12, and a lead-in portion 15b that curves from the vehicle front side end portion of the straight portion 15a toward the vehicle interior side. ing.

  On the other hand, a roller unit 16 is provided at a substantially central portion in the vertical direction on the vehicle rear side of the slide door 14. The roller unit 16 includes a center arm 19 attached to a bracket 17 fixed to a door panel (not shown) of the slide door 14 via a rotation shaft 18. The center arm 19 is supported so as to be pivotable in the horizontal direction with respect to the slide door 14 by a pivot shaft 18 having an axial direction directed in the vehicle vertical direction. The center arm 19 is provided with a roller mounting portion 19a that is bent toward the center rail 15 side, and a traveling roller 20 and a pair of guide rollers 21 are rotatably mounted on the roller mounting portion 19a. The traveling roller 20 and the guide roller 21 are disposed in the center rail 15 so that the traveling roller 20 travels on the vehicle lower surface of the center rail 15 and the guide roller 21 is supported on both surfaces of the center rail 15 in the vehicle width direction. Thus, the center arm 19 is movably mounted on the center rail 15 by being guided.

  When the center arm 19 moves in the vehicle front-rear direction along the center rail 15, the slide door 14 is slidably opened and closed along the side portion of the vehicle body 12. That is, when the center arm 19 is guided to the straight portion 15 a of the center rail 15, the slide door 14 is opened, and when the center arm 19 is guided to the retracting portion 15 b of the center rail 15, the slide door 14 is It is pulled into the vehicle interior side so as to be flush with the side surface and is in a closed state. When the center arm 19 moves on the retracting portion 15 b of the center rail 15, the center arm 19 is rotated with respect to the slide door 14 about the rotation shaft 18, so that the slide door 14 is attached to the vehicle body 12. The vehicle is moved in the vehicle front-rear direction while being substantially parallel to the side portion.

  As shown in FIG. 1, the roller units 22 and 23 provided at the upper and lower ends of the sliding door 14 on the vehicle front side are an upper rail 24 and a lower rail 25 fixed to upper and lower edges of the opening 13 in the vehicle body 12. Each is attached to be freely movable. Thereby, the sliding door 14 is supported by the vehicle body 12 in a total of three places. As shown in FIG. 2, a cover member 26 that covers the center rail 15 is attached to the side of the vehicle body 12 in order to improve the aesthetics of the vehicle 11.

  The vehicle 11 is provided with a power slide device 30 as a vehicle automatic opening / closing device in order to automatically open and close the sliding door 14. The power slide device 30 is a so-called cable-type opening / closing device including a closed cable 31 and an open cable 32. The power slide device 30 is a door built-in opening / closing device in which a drive unit (PSD motor) 33 as a drive source for driving the pair of cables 31 and 32 is mounted in the slide door 14. The drive unit 33 is disposed in the slide door 14 on the vehicle lower side than the roller unit 16. The closed cable 31 is routed from the drive unit 33 having one end fixed to the vehicle body 12 via a pulley provided on the roller unit 16 and arranged along the center rail 15, and the other end 31a is disposed at the center. In the vicinity of the end of the rail 15 on the closed side (the vehicle front side of the center rail 15), the rail 15 is locked to the side of the vehicle body 12 by a locking unit (not shown). The open cable 32 is routed from the drive unit 33 having one end fixed to the vehicle body 12 via a pulley provided on the roller unit 16 and arranged along the center rail 15, and the other end 32a. In the vicinity of the open end of the center rail 15 (the vehicle rear side of the center rail 15), the side of the vehicle body 12 is locked by a locking unit 34.

  FIG. 3 is a rear view showing the drive unit viewed from the vehicle interior side. As shown in FIG. 3, a closed outer casing 35 and an open outer casing 36 for guiding the cables 31 and 32 are provided between the drive unit 33 and the roller unit 16 in the slide door 14. . The outer casings 35 and 36 are formed in a tube shape from a flexible resin material. The cables 31 and 32 are inserted into the outer casings 35 and 36 and guided along the outer casings 35 and 36.

  End caps 37a and 37b are attached to one end of the outer casings 35 and 36 on the drive unit 33 side. With the end caps 37a and 37b, one end of the outer casings 35 and 36 is assembled to the drive unit 33 with the wiring direction directed toward the roller unit 16 side, that is, the vehicle vertical side. That is, the cables 31 and 32 are routed from the drive unit 33 toward the vehicle upper side by one end of the end caps 37a and 37b and the outer casings 35 and 36. On the other hand, a single casing cap 38 is attached to the other end of the outer casings 35, 36 on the roller unit 16 side. The casing cap 38 is mounted together with the other ends of the outer casings 35 and 36 with the other ends of the outer casings 35 and 36 being arranged side by side in the vehicle vertical direction. With the casing cap 38, the other ends of the outer casings 35 and 36 are assembled to a pulley case 39 provided in the roller unit 16 with the wiring direction thereof directed toward the vehicle front-rear side. That is, the cables 31 and 32 are routed from the roller unit 16 toward the vehicle front-rear side by the casing cap 38.

  One end of each of the outer casings 35 and 36 is assembled toward the vehicle upper and lower sides with respect to the drive unit 33, and the other end is assembled toward the vehicle front and rear sides with respect to the roller unit 16. By being directly connected to 16, it is arranged in a curved state inside the slide door 14, that is, in a state having slack. The cables 31 and 32 are smoothly guided between the drive unit 33 and the roller unit 16 along the outer casings 35 and 36.

  As described above, the drive unit 33 and the roller unit 16 are directly connected by the outer casings 35 and 36 in the slide door 14, and the outer casings 35 and 36 are arranged in a curved state, that is, in a state having slack. The cables 31 and 32 can be smoothly guided along the outer casings 35 and 36 between the drive unit 33 and the roller unit 16. Therefore, it is not necessary to provide a pulley for guiding the cables 31 and 32 between the drive unit 33 and the roller unit 16, and the number of parts can be reduced and the structure of the power slide device 30 can be simplified. Thereby, workability at the time of assembling the power slide device 30 can be improved.

  In addition, it is possible to reduce the wiring area of the outer casings 35 and 36 by reducing the radius of curvature R of the outer casings 35 and 36, thereby reducing the size of the power slide device 30. If the radius of curvature R is excessively small, the sliding friction of the cables 31 and 32 increases, the motor efficiency is lowered, and the outer casings 35 and 36 may be damaged. The curvature radius R is preferably larger than 60 cm. Further, since the pulley case 39 is fixed to the door panel of the slide door 14, the casing cap 38 does not move relative to the slide door 14 when the slide door 14 is opened and closed.

  FIG. 4 is an arrow view showing the drive unit viewed from the direction of arrow A in FIG. 5 is a cross-sectional view taken along line BB in FIG. 4, and FIG. 6 is a cross-sectional view taken along line CC in FIG.

  The drive unit 33 includes a motor main body (electric motor) 41 and a drive unit 42 that drives the cables 31 and 32 by the output of the motor main body 41.

  As shown in FIG. 5, a brushed DC motor is used for the motor main body 41, and a motor shaft 43 as a motor shaft provided in the motor main body 41 can rotate in the forward direction or the reverse direction. The motor main body 41 has a yoke 44 formed by press-forming a thin steel plate or the like into a bottomed stepped cylindrical shape. As shown in FIG. 4, the cross section of the yoke 44 includes a pair of flat portions 44a facing each other and a pair of arc portions 44b respectively connecting both ends of the pair of flat portions 44a, and is orthogonal to the flat portion 44a. It is formed in a substantially oval shape in which the direction to be performed is the short direction. A pair of arc-shaped permanent magnets 45 that are located on the side of the pair of arc portions 44 and are magnetized in the N-pole and S-pole toward the radially inner side are fixed to the inner surface of the yoke 44 in a state of facing each other. Has been.

  Inside the yoke 44, an armature 46 facing each permanent magnet 45 via a minute gap (air gap) is rotatably accommodated. An axially proximal end side of the motor shaft 43 is fixed through the shaft center of the armature 46. When a drive current is supplied to the armature coil 46a of the armature 46 via the pair of brushes 47 and the commutator 48, an electromagnetic force is generated in the armature 46 so that the motor shaft 43 is rotationally driven. The motor body 41 is attached to the motor frame 50 of the drive unit 42 on the opening side of the yoke 44.

  As shown in FIG. 6, the motor frame 50 is formed in a substantially cylindrical shape that opens in a direction (vertical direction in FIG. 6) orthogonal to the axial direction of the motor shaft 43. The motor frame 50 includes a clutch cover 51 that covers an opening on one end side in the axial direction of the motor frame 50 (upper side in FIG. 6), and an opening portion on the other end side in the axial direction of the motor frame 50 (lower side in FIG. 6). A covering drum cover 52 is attached. The opening of the motor frame 50 is closed by the clutch cover 51 and the drum cover 52. A motor connection portion 53 to which the motor main body 41 is attached is integrally formed at a substantially central portion in the axial direction of the motor frame 50. As shown in FIG. 5, the motor connection portion 53 opens in the direction orthogonal to the motor body 41 side, that is, the opening side of the motor frame 50. The motor main body 41 is fixed to the end surface on the opening side of the motor connecting portion 53 with the pair of flat portions 44a of the yoke 44 facing the axial direction of the motor frame 50, and the front end side in the axial direction of the motor shaft 43 is connected to the motor. It protrudes into the frame 50.

  A worm 43 a is integrally formed on the outer peripheral surface of the motor shaft 43 projecting into the motor frame 50 on the front end side in the axial direction. In the motor frame 50, a worm wheel 54 is accommodated which is located at a substantially central portion in the axial direction of the motor frame 50 and meshes with the worm 43a. An output shaft 57 that is rotatably supported with respect to the motor frame 50 by bearings 55 and 56 is inserted into the shaft center of the worm wheel 54. The output shaft 57 is also supported so as to be rotatable relative to the worm wheel 54.

  The output of the motor main body 41 is decelerated by a worm gear mechanism (deceleration mechanism) including the worm 43 a and the worm wheel 54, and is transmitted to the output shaft 57 via the clutch mechanism 58. The clutch mechanism 58 is housed in a clutch housing portion 50 a formed on one end side in the axial direction of the motor frame 50. When the sliding door 14 is manually opened and closed, the power transmission path between the worm wheel 54 and the output shaft 57 is blocked by the clutch mechanism 58.

  A drum 59 having a spiral cable groove 59a around which the pair of cables 31 and 32 are wound is fixed to the other axial end of the output shaft 57. The drum 59 is housed in a drum housing portion 50 b formed on the other axial end side of the motor frame 50. One end of the closed-side cable 31 is fixed to one end in the rotation axis direction of the drum 59 and is wound around the cable groove 59a on one end side in the rotation axis direction of the drum 59, and is drawn out toward the motor body 41 side. Yes. On the other hand, one end of the open side cable 32 is fixed to the other end in the rotation axis direction of the drum 59 and is wound around the cable groove 59 a on the other end side in the rotation axis direction of the drum 59, so On the other hand, the drum 59 is pulled out so as to overlap with the rotation axis direction of the drum 59. That is, the pair of cables 31 and 32 are drawn from the drum 59 in a state of being shifted in the rotation axis direction of the drum 59, that is, in the axial direction of the output shaft 57 that supports the drum 59.

  Further, the pair of cables 31 and 32 are wound around the drum 59 in opposite directions from one end to the other end, so that when the motor body 41 is operated, they are driven in opposite directions. Yes. That is, when the drum 59 is rotated in the clockwise direction in FIG. 3, the open side cable 32 is wound up by the drum 59 and the closed side cable 31 is sent out by the drum 59 so that the slide door 14 is opened. It is pulled automatically to automatically open. On the contrary, when the drum 59 is rotated counterclockwise in FIG. 3, the closed cable 31 is wound up by the drum 59 and the open cable 32 is sent out by the drum 59, so that the slide door 14 is moved. It will be pulled to the closing side and will automatically close.

  FIG. 7 is an exploded perspective view of the drive unit. FIG. 8 is an explanatory diagram showing the drive unit during the automatic opening operation, and FIG. 9 is an explanatory diagram showing the drive unit during the automatic closing operation. In FIG. 7, illustrations of fastening members such as screws and nuts for assembling the constituent members of the drive unit 33 are omitted.

  As shown in FIG. 7, a metal frame-shaped motor bracket 61 is attached to the motor frame 50 that houses the drive unit 42. The motor bracket 61 includes an annular portion 61 a that is fixed to the radially outer side of the substantially central portion in the axial direction of the motor frame 50, and a yoke 44 of the motor main body 41 that extends from the annular portion 61 a in the cable 31 and 32 routing direction. Is provided with a cover portion 61b that covers the other end side in the axial direction of the motor frame 50 (the other end side in the rotation axis direction of the drum 49) and a plurality of leg portions 61c that protrude in the radial direction of the motor frame 50. The drive unit 33 is fixed to the door panel of the slide door 14 at the leg portion 61c of the motor bracket 61 so that the direction in which the cables 31 and 32 are drawn from the drive unit 33 faces the roller unit 16 side.

  As shown in FIG. 8, the drive unit 33 is assembled with an outer push type closing side tensioner mechanism 64 a and an opening side tensioner mechanism 64 b for applying a predetermined tension to the cables 31 and 32. The tensioner mechanisms 64 a and 64 b are accommodated in a tensioner case 65 assembled to the cover portion 61 b of the motor bracket 61 at a position where the cables 31 and 32 are drawn from the drum 59. The tensioner case 65 is formed separately from the motor frame 50 and is assembled to the cover portion 61 b of the motor bracket 61 from the other axial end side of the motor frame 50. The tensioner case 65 opens to the other axial end of the motor frame 50, and a tensioner cover 66 formed integrally with the drum cover 52 is attached. The opening of the tensioner case 65 is formed by the tensioner cover 66. It is blocked.

  In the tensioner case 65, end caps 37a, 37b attached to one end of the outer casings 35, 36 are accommodated so as to be movable back and forth along the direction in which the cables 31, 32 are routed. The tensioner mechanisms 64 a and 64 b include coil springs 67 a and 67 b that urge the end caps 37 a and 37 b in a direction protruding from the tensioner case 65, that is, in a direction away from the drum 59. Further, the open side tensioner mechanism 64b accommodated in the tensioner case 65 is provided with an output shaft 57 that supports the rotation axis direction of the yoke 44 of the motor body 41 and the drum 59, that is, the drum 59, via the cover portion 61b of the motor bracket 61. Are arranged so as to overlap in the axial direction. In other words, the open side tensioner mechanism 64 b is disposed so as to face the rotation axis direction of the drum 59, that is, the axial direction of the output shaft 57 that supports the drum 59, with respect to the flat portion 44 a of the yoke 44.

  As described above, since the outer casings 35 and 36 are arranged in a curved state between the drive unit 33 and the roller unit 16, the end caps 37 a and 37 b are placed in the tensioner case 65 by the tensioner mechanisms 64 a and 64 b. By moving forward and backward, the outer casings 35 and 36 are swung in the vertical direction of the vehicle, and the outer casing length between the drive unit 33 and the roller unit 16 can be changed. That is, when the end caps 37 a and 37 b are urged by the coil springs 67 a and 67 b and protrude from the tensioner case 65, the outer casings 35 and 36 are greatly curved, and the outer between the drive unit 33 and the roller unit 16. The casing length becomes longer. On the contrary, when the end caps 37a and 37b are accommodated in the tensioner case 65 against the urging force of the coil springs 67a and 67b, the outer casing 65 is less bent, and the drive unit 33 and the roller unit 16 are separated from each other. The outer casing length of the is shortened. Accordingly, when the end caps 37a and 37b are protruded from the tensioner case 65 by the tensioner mechanisms 64a and 64b, the outer casing length between the drive unit 33 and the roller unit 16 becomes long. Since the ratio of the outer casing length to the total length is increased, tension is applied to the cables 31 and 32 inserted into the outer casings 35 and 36.

  For example, as shown in FIG. 8, when the slide door 14 is automatically opened, the open-side outer casing 36 is biased by the open-side cable 32 wound around the drum 59 so that the outer casing length is shortened. The end cap 37b is accommodated in the tensioner case 65 against the urging force of the coil spring 67b. Further, the closed side cable 31 sent out from the drum 59 has the end cap 37a protruding from the tensioner case 65 by the urging force of the coil spring 67a and the outer casing length of the closed side outer casing 35 becomes longer, so the closed side tensioner mechanism 64a. Thus, a predetermined tension is applied. Similarly, as shown in FIG. 9, during the automatic closing operation of the slide door 14, the closed outer casing 35 is urged by the closed cable 31 wound around the drum 59 so that the outer casing length is shortened. Therefore, the end cap 37a is accommodated in the tensioner case 65 against the urging force of the coil spring 67a. Further, the open side cable 32 fed out from the drum 59 has the end cap 37b protruding from the tensioner case 65 by the urging force of the coil spring 67b and the outer casing length of the open side outer casing 36 becomes long, so the open side tensioner mechanism 64b. Thus, a predetermined tension is applied.

  Accordingly, the cable lengths of the cables 31 and 32 routed between the drive unit 33 and the both end sides of the center rail 15 are changed by the center arm 19 being guided by the drawing portion 15b of the guide rail 15 or the like. However, since the tension of the cables 31 and 32 is maintained by the tensioner mechanisms 64a and 64b, the cables 31 and 32 are not loosened. Thereby, the power slide device 30 can be operated smoothly.

  As described above, the outer casings 35 and 36 are arranged in a curved state between the drive unit 33 and the roller unit 16, that is, in a state in which the outer casings 35 and 36 are slackened. The length can be easily changed, and the outer push type tensioner mechanisms 64 a and 64 b can be assembled to the drive unit 33. Therefore, there is no need to assemble a tensioner mechanism to the locking unit 34 for locking the other end portions 31a, 32a of the cables 31, 32, so the structure of the locking unit 34 is simplified and the locking unit 34 is downsized. can do.

  Further, since the open-side tensioner mechanism 64b is arranged so as to overlap with the yoke 44 of the motor body 41 in the rotational axis direction of the drum 59, that is, the axial direction of the output shaft 57 that supports the drum 59, the projected area of the drive unit 33 is increased. Can be small. Thereby, since the space at the time of mounting the drive unit 33 in the slide door 14 can be made small, the layout property of the drive unit 33 can be improved.

  Further, since the open side tensioner mechanism 64b is disposed so as to face the flat portion 44a of the yoke 44 in the direction of the rotation axis of the drum 59, the short direction of the yoke 44 is the direction of the rotation axis of the drum 59, that is, the drive unit 33. It arrange | positions so that it may become a thickness direction. Thereby, the drive unit 33 can be reduced in thickness.

  Further, since the tensioner case 65 is formed separately from the motor frame 50, as shown in FIG. 7, even when the open side tensioner mechanism 64b is arranged so as to overlap with the yoke 44 in the rotational axis direction of the drum 59. The yoke 44 can be easily magnetized with the motor main body 41 assembled to the motor frame 50. That is, after magnetizing the inside of the yoke 44 with the motor main body 41 assembled to the motor frame 50, the motor bracket 61 and the tensioner case 65 are attached, so that the yoke does not interfere with the motor bracket 61 and the tensioner case 65. Magnetization within 44 can be performed.

  As shown in FIG. 4, the drawing positions of the pair of cables 31 and 32 from the drum 59 are shifted from each other in the rotational axis direction of the drum 59, that is, the axial direction of the output shaft 57 that supports the drum 59. The tensioner mechanisms 64a and 64b are arranged so as to be offset from each other in the direction of the rotation axis of the drum 59. That is, the distance between the open-side tensioner mechanism 64b in the rotation axis direction of the drum 59 and the axis of the motor body 41 is larger than the distance La between the close-side tensioner mechanism 64a in the rotation axis direction of the drum 59 and the axis of the motor body 41. The open side tensioner mechanism 64b is arranged farther toward the other end side in the rotation axis direction of the drum 59 than the closed side tensioner mechanism 64a so that Lb becomes larger. Therefore, one end of the pair of outer casings 35 and 36 is assembled to the drive unit 33 in a state where they are shifted from each other in the rotation axis direction of the drum 59, that is, in the thickness direction of the drive unit 33.

  Further, since the open side tensioner mechanism 64b is shifted from the closed side tensioner mechanism 64a toward the other end side in the rotation axis direction of the drum 59, the tensioner case 65 and the motor bracket 61 that accommodate the tensioner mechanisms 64a and 64b are disposed. The cover portion 61b can have a stepped shape that bends toward the other end side in the rotation axis direction of the drum 59 on the open side tensioner mechanism 64b side. Thus, the motor main body 41 can be arranged in a state where the yoke 44 protrudes to the other end side in the rotation axis direction of the drum 59 from the closed side tensioner mechanism 64a side of the cover portion 61b.

  As described above, the open side tensioner mechanism 64b is disposed farther in the rotational axis direction of the drum 59 than the closed side tensioner mechanism 64a in the rotation axis direction of the drum 59. Therefore, the cover portion 61b of the tensioner case 65 and the motor bracket 61 is provided. By forming a stepped shape that bends toward the other end side in the rotation axis direction of the drum 59 on the open side tensioner mechanism 64b side, the yoke 44 is connected to the other end in the rotation axis direction of the drum 59 rather than the closed side tensioner mechanism 64a side of the cover portion 61b. It can arrange | position in the state protruded to the side. That is, since the open side tensioner mechanism 64b and the yoke 44 are arranged close to each other, the distance Lb between the open side tensioner mechanism 64b and the axis of the motor body 41 in the rotation axis direction of the drum 59 can be reduced. The drive unit 33 can be thinned.

  In addition, since one end of the pair of outer casings 35 and 36 is assembled to the drive unit 33 in a state in which the outer casings 35 and 36 are displaced from each other in the thickness direction of the drive unit 33, the tensioner mechanisms 64a and 64b Interference with each other when the total length of the pair of outer casings 35 and 36 changes can be suppressed. That is, since the outer casings 35 and 36 swing in the vertical direction of the vehicle, the pair of outer casings 35 and 36 are assembled to the drive unit 33 with one end of the pair of outer casings 35 and 36 being shifted from each other in the lateral direction of the vehicle. , 36 are suppressed from interfering with each other.

  As shown in FIG. 8, the pair of tensioner mechanisms 64 a and 64 b are arranged to be inclined with respect to each other so that the distance between the cables 31 and 32 becomes narrower as the cables 31 and 32 are separated from the drum 59. Yes. That is, the pair of tensioner mechanisms 64a and 64b is such that the distance D2 between the cables 31 and 32 in the vicinity of the end caps 37a and 37b is smaller than the distance D1 between the cables 31 and 32 in the vicinity of the drum 59. The end caps 37a and 37b are arranged close to each other. Thereby, a pair of outer casings 35 and 36 will be arrange | positioned so that a mutual space | interval may become narrow as it separates from the drive unit 33 side.

  As described above, the distance between the pair of cables 31 and 32 becomes narrower as the distance from the drum 59 decreases, that is, the distance between the pair of outer casings 35 and 36 becomes smaller as the distance from the drive unit 33 increases. Since the pair of tensioner mechanisms 64a and 64b are disposed so as to be inclined with respect to each other, the space for arranging the outer casings 35 and 36 can be reduced. Thereby, the layout property of the drive unit 33 can be improved.

  Further, since the pair of outer casings 35, 36 are arranged so that the distance between them becomes smaller as the distance from the drive unit 33 increases, the other end of the pair of outer casings 35, 36 is covered by a single casing cap 38. It becomes possible to install it collectively.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the open side tensioner mechanism 64b and the yoke 44 of the motor main body 41 are arranged so as to overlap in the rotation axis direction of the drum 59, but the closed side tensioner mechanism 64a and the yoke 44 of the motor main body 41 are arranged. May be arranged so as to overlap in the direction of the rotation axis of the drum 59.

  In the above-described embodiment, the drive unit 33 in which the open side tensioner mechanism 64a and the yoke 44 of the motor body 41 are arranged so as to overlap in the rotation axis direction of the drum 59 is applied to the power slide device 30 with a built-in door. However, the drive unit 33 may be applied to a power slide device with a built-in vehicle body.

DESCRIPTION OF SYMBOLS 11 Vehicle 12 Car body 12a Concave part 13 Opening part 14 Sliding door 15 Center rail (guide rail)
15a Linear part 15b Pull-in part 16 Roller unit 17 Bracket 18 Rotating shaft 19 Center arm 19a Roller mounting part 20 Traveling roller 21 Guide roller 22, 23 Roller unit 24 Upper rail 25 Lower rail 26 Cover member 30 Power slide device 31 Closed side cable 31a etc. End 32 Open side cable 32a Other end 33 Drive unit 34 Locking unit 35 Closed outer casing 36 Open side outer casing 37a, 37b End cap 38 Casing cap 39 Pulley case 41 Motor body 42 Drive unit 43 Motor shaft (motor shaft) )
43a worm 44 yoke 44a flat surface portion 44b arc portion 45 permanent magnet 46 armature 46a armature coil 47 brush 48 commutator 50 motor frame 50a clutch housing portion 50b drum housing portion 51 clutch cover 52 drum cover 53 motor connection portion 54 worm wheel 55, 56 bearing 57 Output shaft 58 Clutch mechanism 59 Drum 59a Cable groove 61 Motor bracket 61a Ring portion 61b Cover portion 61c Leg portion 64a Close side tensioner mechanism 64b Open side tensioner mechanism 65 Tensioner case 66 Tensioner cover 67a, 67b Coil spring

Claims (7)

A motor body comprising a motor shaft and a yoke that rotatably supports the motor shaft;
A drive unit that includes a drum that is rotationally driven by the rotation of the motor shaft and is supported by an output shaft orthogonal to the motor shaft;
A tension is applied to a pair of cables wound around the drum, and a pair of tensioner mechanisms assembled to the drive unit.
A drive unit of a power slide device that automatically opens and closes a slide door by driving the pair of cables by rotating the drum,
One of the pair of tensioner mechanisms, the tensioner mechanism is disposed so as to overlap the yoke in the direction of the output shaft that supports the drum.   2. The drive unit of the power slide device according to claim 1, wherein the pair of tensioner mechanisms are arranged so as to be shifted from each other in an output shaft direction for supporting the drum.   3. The drive unit of the power slide device according to claim 2, wherein the one tensioner mechanism is disposed farther in the output shaft direction supporting the drum with respect to the yoke than the other tensioner mechanism. The drive unit of the power slide device.   The drive unit of the power slide device according to any one of claims 1 to 3, wherein the yoke includes a pair of flat surface portions and a pair of arc portions respectively connecting both ends of the pair of flat surface portions. The drive unit of the power slide device is characterized in that the one tensioner mechanism has a shape and is disposed to face an output shaft direction supporting the drum with respect to the flat portion of the yoke.   5. The drive unit of the power slide device according to claim 1, wherein a tensioner case that houses the tensioner mechanism is formed separately from a motor frame that houses the drive unit. The drive unit of the power slide device.   The drive unit of the power slide device according to any one of claims 1 to 5, wherein the pair of tensioner mechanisms are arranged so that a distance between the pair of cables decreases as the distance from the drum decreases. A drive unit for a power slide device, wherein the drive unit is arranged at an angle. A motor body comprising a motor shaft and a yoke that rotatably supports the motor shaft;
A drive unit that includes a drum that is rotationally driven by the rotation of the motor shaft and is supported by an output shaft orthogonal to the motor shaft;
A tension is applied to a pair of cables wound around the drum, and a pair of tensioner mechanisms assembled to the drive unit.
A drive unit of a power slide device that automatically opens and closes a slide door by driving the pair of cables by rotating the drum,
The drive unit of the power slide device, wherein the pair of tensioner mechanisms are arranged so as to be inclined with respect to each other so that a distance between the pair of cables becomes narrower as the distance from the drum increases.

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