JP2007023700A - Automatic opening/closing device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic opening/closing device for a vehicle which protects a portion to be detected from foreign matters and enables reduction of a size. <P>SOLUTION: The automatic opening/closing device 13 for the vehicle which automatically opens/closes a slide door to be an opening/closing body has a drum 20 which is rotatably stored inside a storage case 21 and is rotated by an electric motor and cables 15, 16 which are provided between a power transmitting part 25 of the drum 20 and the slide door and transmit power of the drum 20 to the slide door. A disc member 44 with a magnet 40 at the outer periphery is incorporated in a recessed storage part 41 formed at one end in an axial direction of the drum 20. A magnetic sensor 45 which detects rotation of the drum 20 with the disc member 44 is mounted in the storage case 21 to face the magnet 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an automatic opening / closing device for a vehicle that automatically opens and closes an opening / closing body provided in a vehicle.

  Vehicles such as passenger cars are provided with opening / closing bodies such as doors, back doors, and sunroofs. For example, a side door of a wagon car or one-box car is provided with a sliding door that opens and closes the opening by moving in the vehicle front-rear direction so that entry / exit from the side of the vehicle and loading / unloading of luggage can be performed easily. ing.

  A vehicle such as a passenger car may be equipped with an opening / closing device for automatically opening and closing these opening / closing bodies. For example, the vehicle disclosed in Patent Literature 1 is equipped with an opening / closing device that can open and close the sliding door by pulling out a cable connected to the sliding door. The switchgear disclosed in Patent Document 1 has an electric motor as a driving source and a drum that rotates by driving the electric motor, and the cable is wound around the drum by controlling the driving of the electric motor. I'm trying to withdraw and withdraw.

Thus, in an open / close device using an electric motor as a drive source, in order to control the open / close operation of the open / close body, for example, as disclosed in Patent Document 1, S poles and N poles are alternately magnetized on the outer periphery. Some disc members having an annular magnet are fixed to a rotating shaft on which a drum is mounted, and a magnetic sensor is provided opposite to the magnet. The magnetic sensor outputs a pulse signal according to the polarity alternately switched by the rotation of the magnet that rotates integrally with the rotating shaft, and the power supply control to the electric motor is performed based on this output signal, thereby opening and closing the opening / closing body. Operation is controlled. In order to secure the resolution of rotation detection, it is necessary to magnetize a large number of magnetic poles on the outer periphery of the disk member, which has been a problem in miniaturizing the disk member provided with the magnet.
Japanese Patent Laid-Open No. 2005-83169

  When the rotating body is rotatably accommodated in the housing case and the rotating body and the opening / closing body exposed to the outside are connected using a power transmission member such as a cable, a part of the power transmission member is exposed to the outside. (See Patent Document 1) Rainwater flowing on the side of the opening / closing body may enter the inside of the housing case through the power transmission member. If foreign matter such as rainwater that has entered the inside of the storage case is scattered and adheres to the detected part such as a magnet, the detection accuracy of the magnetic sensor may decrease, so it is necessary to protect the foreign part from adhering to the detected part. There is. In the opening / closing device disclosed in Patent Document 1, a disk member having a magnet is disposed between a drum as a rotating body and a gear case in which a worm reduction mechanism is accommodated, and extends between the drum and the disk member. Thus, by providing the storage case with a partition wall that forms a labyrinth seal, foreign matter such as rainwater that has entered the storage case is prevented from adhering to the magnet.

  By the way, if the magnet can be protected from foreign matters without providing a partition wall that forms such a labyrinth seal, the axial dimension of the switchgear can be shortened accordingly, and the overall size of the device can be reduced. it can.

  An object of the present invention is to provide an automatic opening / closing device for a vehicle that can protect a detected portion from foreign matters and can be downsized.

  An automatic opening / closing device for a vehicle according to the present invention is an automatic opening / closing device for a vehicle that automatically opens and closes an opening / closing body provided in the vehicle, and is rotatably accommodated inside a housing case and is rotationally driven by a drive source. A rotating body, a power transmission member that is provided between the power transmission unit of the rotating body and the opening / closing body, and that transmits power of the rotating body to the opening / closing body, and a detection target portion on the outer periphery, and in a disc shape A detection object formed and incorporated in a concave accommodation part formed at one axial end of the rotary body and rotated together with the rotary body, and mounted on the accommodation case facing the detection part. And a detection body that detects the rotation of the rotating body by the detected body.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the housing portion is formed at an axial end opposite to the drive source of the rotating body.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the power transmission portion and the accommodating portion are integrally formed of a resin material.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that an outer diameter of the housing portion is formed larger than an outer diameter of the power transmission portion.

  The automatic opening / closing device for a vehicle according to the present invention is provided with a power transmission unit facing surface disposed near the power transmission unit and a housing unit facing surface disposed near the housing unit in the housing case, A gap between the housing case and the rotating body is formed in a labyrinth shape.

  In the vehicle automatic opening and closing device of the present invention, the power transmission portion has a cylindrical surface in which a guide groove is formed in a spiral shape, and a cable as the power transmission member is wound around the guide groove, The accommodation case is formed with an entry / exit hole through which the cable can move freely and a discharge port through which foreign matter entering the inside of the accommodation case through the cable is discharged.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that a rotation center axis of the rotating body is arranged vertically, and the accommodating portion is arranged above the power transmission portion.

  According to the present invention, since the detected object is incorporated in the housing part of the rotating body, the housing case can be directly joined to the drive source side, and the axial dimension of the vehicle automatic opening / closing device can be shortened. Thus, it is possible to reduce the size of the vehicle automatic opening / closing device.

  According to the present invention, the diameter of the detected body is secured to a predetermined value or more in order to ensure the resolution of rotation detection by forming the accommodating portion at the axial end of the rotating body opposite to the drive source. Even if it does, it can arrange | position with sufficient layout property.

  According to the present invention, the rotating body can be processed with good moldability by integrally forming the power transmission portion and the accommodating portion from the resin material.

  According to the present invention, it is possible to form the stepped portion on the outer peripheral surface of the rotating body by forming the outer diameter of the housing portion larger than the outer diameter of the power transmission portion, and transmit the power transmission member to the inside of the housing case. The detected part can be protected from the foreign substance by receiving the foreign substance that has entered the step part.

  According to the present invention, the housing case is provided with the power transmission portion facing surface disposed in proximity to the power transmission portion and the housing portion facing surface disposed in proximity to the housing portion, and the clearance between the housing case and the rotating body. By forming the labyrinth into a labyrinth, it effectively suppresses the movement of foreign matter such as rainwater that has entered the housing case through the power transmission member in a direction that passes through the labyrinth-shaped gap, that is, a direction that enters the housing portion. It is possible to protect the detected portion from foreign matter.

  According to the present invention, it is possible to form an entrance / exit hole through which the cable can move in and out of the housing case and a discharge port through which foreign matter that has entered the housing case through the power transmission member is discharged. As a result, foreign matter such as rainwater that has entered the housing case through the cable access hole can be discharged to the outside from the discharge port, and the detected part can be protected from foreign matter by improving the drainage of the housing case. Can do.

  According to the present invention, the rotation center axis of the rotating body is arranged vertically, and the housing part is arranged on the upper side of the power transmission part, so that rainwater or the like that flows downward through the power transmission member enters the power transmission part. The detected part can be protected from foreign matter.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing a vehicle provided with an opening / closing body. As shown in FIG. 1, an opening 1 a is formed on a side surface of the vehicle 1, and a slide door 2 as an opening / closing body that opens and closes the opening 1 a is provided on a side of the vehicle 1. The slide door 2 is movable between a fully open position indicated by a solid line and a fully closed position indicated by a dotted line in the drawing. When getting on and off the second seat 3 or the third seat 4 provided in the passenger compartment or carrying in / out the luggage, the slide door 2 is moved to the fully open position to open the opening 1a.

  A lower arm 5 is fixed to the lower portion of the slide door 2, and a center arm 6 is fixed to a substantially central portion in the vertical direction of the slide door 2. A lower rail 9 is fixed to the lower surface of the floor panel 8 that forms the vehicle floor portion, and a center rail 10 is fixed to the side panel 7 that forms the rear fender portion of the vehicle 1. The lower rail 9 and the center rail 10 incorporate roller assemblies 11 and 12 as slide mechanisms that move along the rails 9 and 10, respectively, and the roller assembly 11 is swingably connected to the tip of the lower arm 5. At the same time, the roller assembly 12 is swingably connected to the tip of the center arm 6 so that the slide door 2 is supported so as to be movable in the longitudinal direction of the vehicle. An upper arm (not shown) is fixed to the upper part of the slide door 2 and is supported by an upper rail provided along the upper edge of the opening 1a. The slide door 2 is supported at three points with respect to the vehicle 1. Has been.

  The lower rail 9 includes a straight portion 9 a that extends linearly along the front-rear direction of the vehicle 1 and a lead-in portion 9 b that bends toward the inside of the vehicle 1. When the roller assembly 11 moves to the rear side of the vehicle body and is guided to the linear portion 9a, the slide door 2 moves to the fully open position that opens the opening 1a, while the roller assembly 11 moves to the front side of the vehicle body and pulls in the drawing portion 9b. , The slide door 2 is drawn into the vehicle 1 so as to be in the same plane as the side surface of the vehicle 1 and moves to a fully closed position that closes the opening 1a.

  An automatic vehicle opening / closing device 13 according to an embodiment of the present invention is provided near the front end of the lower rail 9, and a reversing pulley 14 is provided near the rear end of the lower rail 9. The vehicular automatic opening / closing device 13 has an open side cable 15 as a power transmission member that extends toward the reverse pulley 14 and spans the reverse pulley 14. The open side cable 15 is connected to the roller assembly 11 from the rear side of the vehicle body. It is designed to be connected. Further, the vehicle automatic opening / closing device 13 has a closed side cable 16 as a power transmission member directed toward the roller assembly 11 along the lower rail 9, and the closed side cable 16 is connected to the roller assembly 11 from the front side of the vehicle body. It has become so. As described above, the cables 15 and 16 are coupled to the roller assembly 11 from both the front and rear directions of the vehicle body so as to face each other, and the sliding door 2 is moved in the opening direction by pulling the opening cable 15. The sliding door 2 can be moved in the closing direction by pulling the closing cable 16.

  FIG. 2 is a perspective view showing the vehicle automatic opening / closing apparatus shown in FIG. The vehicle automatic opening / closing device 13 is driven by an electric motor 17 as a drive source, and the drive of the electric motor 17 is controlled by a control unit 19.

  The control unit 19 has a CPU, a memory, and the like, and controls power supply to the electric motor 17 in accordance with a predetermined operation signal. For example, when an opening / closing switch (not shown) provided in the driver's seat is operated in the opening direction, the control unit 19 drives the electric motor 17 to rotate in the forward direction, winds the open side cable 15 and sends out the closed side cable 16 to slide the door. 2 is moved in the opening direction. On the other hand, when the open / close switch is operated in the closing direction, the electric motor 17 is driven in the reverse direction to wind up the closing cable 16 and send out the opening cable 15 to move the sliding door 2 in the closing direction. Yes.

  FIG. 3 is an enlarged perspective view showing the vehicular automatic opening / closing apparatus shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. The vehicular automatic opening / closing device 13 has a housing case 21 that rotatably accommodates a drum 20 as a rotating body, and the housing case 21 is fastened to the floor panel 8 so as to cover the drum 20. 22 is assembled by fastening bolts 23. The drum 20 includes a resin-made power transmission unit 25 having a cylindrical surface 25a in which two guide grooves 24 are formed in a spiral shape. The guide groove 24 includes an open side cable 15 as a power transmission member and a closed side. The cable 16 is wound a plurality of times in opposite directions. The storage case 21 is provided with access holes 26 and 27 through which the cables 15 and 16 are movably inserted, and drainage that discharges foreign matter such as rainwater that has entered the storage case 21 through the cables 15 and 16 to the outside. An outlet 28 is formed. In FIG. 3, a path for discharging foreign matters such as rainwater is indicated by arrows.

  As shown in FIG. 4, a gear case 29 is assembled to the lower side of the housing case 21 using fastening bolts 23, and a rotary shaft 30 having a tip projecting from the housing case 21 is provided in the gear case 29. Is rotatably incorporated via a bearing 31. A drum 20 is attached to the tip of the rotating shaft 30, and the drum 20 is rotatable about the rotating shaft 30 as a rotation center axis. A reduction mechanism 32 and an electromagnetic clutch 33 are accommodated in the gear case 29, and the rotation shaft 30 of the drum 20 and the output shaft of the electric motor 17 are connected via the reduction mechanism 32 and the electromagnetic clutch 33. The drum 20 is rotationally driven by the electric motor 17 so that power is transmitted to the slide door 2 via the cables 15 and 16. A clutch cover 34 is attached to the gear case 29 so as to cover the electromagnetic clutch 33.

  As the speed reduction mechanism 32, a worm gear mechanism including a worm (not shown) formed on the outer periphery of the output shaft of the electric motor 17 and a worm wheel 35 rotatably incorporated in the gear case 29 is used. The rotation of the electric motor 17 is decelerated to a predetermined number of revolutions by the reduction mechanism 32 and transmitted to the rotary shaft 30. As the speed reduction mechanism 32, another type of speed reduction mechanism such as a combination of spur gears having different numbers of teeth may be used.

  The electromagnetic clutch 33 is a so-called electromagnetic meshing type, and includes a drive disk 36, a driven disk 37, and a clutch coil 38. The drive disk 36 is formed in a disk shape from a steel material, and is connected to the worm wheel 35 so as to rotate integrally with the worm wheel 35. The driven disk 37 is formed in a disk shape from a steel material, and is spline-engaged with the rotary shaft 30 to rotate integrally with the rotary shaft 30 and is movable in the axial direction with respect to the rotary shaft 30. The clutch coil 38 is accommodated in a coil bobbin 39 and generates a magnetic force when electric power is supplied from the control unit 19.

  When a magnetic force is generated in the clutch coil 38, the driven disk 37 moves in a direction approaching the drive disk 36, and the respective disks 36 and 37 are engaged with each other on their meshing surfaces. As a result, the worm wheel 35 and the rotary shaft 30 are connected to each other via the disks 36 and 37 so that the worm wheel 35, that is, the rotation of the electric motor 17 is transmitted to the rotary shaft 30. . Further, when the power supply to the clutch coil 38 is stopped, the electromagnetic attractive force between the respective disks 36 and 37 is reduced, and the worm wheel 35 and the rotary shaft 30 are in a power cut-off state. In this way, the power transmission between the electric motor 17 and the rotary shaft 30 is interrupted by the electromagnetic clutch 33. For example, when the sliding door 2 is manually opened and closed, the electromagnetic clutch 33 is powered. The sliding door 2 can be easily opened and closed by setting the shut-off state.

  FIG. 5 is an enlarged view of a main part of the vehicle automatic opening / closing apparatus shown in FIG. As shown in FIG. 5, a concave accommodating portion 41 into which the detection object is incorporated is formed at the axial end portion of the drum 20 on the opposite side to the electric motor 17, and above the power transmission portion 25. The rotation shaft 30 that is the rotation center axis of the drum 20 is arranged vertically so that the housing portion 41 is arranged.

  As the detected body, a disk member 44 formed in a disk shape having a magnet 40 as a detected portion on the outer periphery is used, and the magnet 40 has an S pole and an N pole along the outer periphery of the disk member 44. An annular multipolar magnetized magnet is used in which are alternately magnetized. In order to ensure the resolution of rotation detection, it is necessary to magnetize a large number of magnetic poles on the outer periphery of the disk member 44, and it is difficult to reduce the diameter of the magnet 40. Since the outer diameter of 41 is set larger than the outer diameter of the power transmission unit 25, a magnet 40 having a predetermined diameter can be incorporated. Thus, the step part 42 is formed in the outer peripheral surface of the drum 20 by making the outer diameter of the accommodating part 41 different from the outer diameter of the power transmission part 25.

  The disk member 44 is disposed in the accommodating portion 41 of the drum 20 and fastened to the distal end side of the rotating shaft 30 together with the drum 20 using the nut 43, and the disk member 44 and the magnet 40 are synchronized with the rotation of the rotating shaft 30. Thus, the drum 20 rotates as a unit. As described above, by incorporating the disk member 44 as the detected body into the housing portion 41, the housing case 21 is electrically driven as compared with the case where the drum and the disk member are disposed so as to sandwich the partition wall as in the prior art. It is possible to directly join the gear case 29 on the motor 17 side, the axial dimension of the vehicle automatic opening / closing device 13 can be shortened, and the vehicle automatic opening / closing device 13 can be downsized. Further, by forming the accommodating portion 41 at the end portion in the axial direction of the drum 20 on the opposite side to the electric motor 17, the diameter of the magnet 40 may be secured at a predetermined value or more in order to ensure detection accuracy. They can be arranged with good layout without interfering with the electric motor 17 and the electromagnetic clutch 33. The power transmission part 25 and the accommodating part 41 can be integrally formed of a resin material. In this case, the drum 20 can be processed with good moldability.

  A magnetic sensor 45 serving as a detection body that detects the rotation of the magnet 40, that is, the drum 20 from the change in the magnetic field generated by the magnet 40 is disposed in the housing case 21 so as to face the magnet 40. Is mounted through. As the magnetic sensor 45, two Hall elements that are shifted from each other in the circumferential direction by a predetermined angle with respect to the magnet 40 are used, and the phases of detection signals generated by the same magnetic pole are shifted by 90 °. With such a configuration, when the magnet 40 rotates together with the drum 20, the magnetic sensor 45 outputs a detection signal having a period corresponding to the rotation of the drum 20 in a pulse shape in response to a change in the magnetic pole of the opposing magnet 40. These magnetic sensors 45 are mounted on a sensor substrate 46 and mounted in a sensor housing portion 47 provided in the housing case 21.

  The control unit 19 controls the operation of the electric motor 17 based on the detection signal from the magnetic sensor 45. For example, the opening / closing position of the slide door 2 is calculated by integrating pulse signals starting from the time when the slide door 2 is in the fully open position, and the moving speed of the slide door 2 that has moved close to the fully closed position is reduced. Pinch prevention control that performs slow stop control or stops or reverses the movement of the sliding door 2 according to the foreign object pinching detected when it is determined that the period extension of the pulse signal is equal to or greater than a predetermined value. To go.

  In order to house such a drum 20 in the housing case 21, the housing case 21 has a cylindrical surface-shaped power transmission portion facing surface 48 disposed close to the power transmission portion 25, and a space close to the housing portion 41. A housing space 50 including a cylindrical housing portion facing surface 49 is formed, and a step surface 51 continuous to each of the power transmission portion facing surface 48 and the housing portion facing surface 49 is a step portion of the drum 20. 42 is arranged opposite to 42. Thus, the gap formed between the drum 20 including the power transmission unit 25 and the storage unit 41 having different outer diameters and the storage case 21 including the power transmission unit facing surface 48 and the storage unit facing surface 49 is illustrated in FIG. As shown in FIG. 5, it can be formed in a labyrinth shape from the power transmission portion 25 toward the housing portion 41.

  In the illustrated case, a concave portion 52 is formed at the axial end of the drum 20 on the opposite side to the accommodating portion 41, and the concave portion 52 extends along the gear case 29 toward the rotary shaft 30. A part of the housing case 21 is inserted, whereby a labyrinth-like gap is formed from the power transmission portion 25 toward the rotating shaft 30.

  When the sliding door 2 that is exposed to the outside and the vehicle automatic opening / closing device 13 that automatically opens and closes the sliding door 2 are connected using the cables 15 and 16, a part of the cables 15 and 16 is externally connected. Because of the exposure, for example, foreign matter such as rain water containing dust flowing on the side surface of the slide door 2 may enter the housing case 21, that is, the housing space 50 through the cables 15 and 16. However, since the accommodating portion 41 is disposed above the power transmission portion 25 around which the cables 15 and 16 are wound, the magnet 40 incorporated in the accommodating portion 41 is not easily affected by foreign matter such as rainwater flowing downward. It has become. In addition, by allowing the foreign matter that has entered the inside of the housing case 21 to be received by the step portion 42, movement in the direction from the power transmission unit 25 toward the housing unit 41 is effectively suppressed, and the power transmission unit 25 to the housing unit 41. Since the gap in the direction toward the head is formed in a labyrinth shape, the foreign matter does not easily enter the direction from the power transmission portion 25 toward the housing portion 41. Further, the storage case 21 is formed with a discharge port 28 for discharging foreign matter that has entered the inside, thereby ensuring the discharge. In the vehicle automatic opening / closing device 13 having such a structure, it is difficult for foreign matter that has entered the inside of the housing case 21 to adhere to the magnet 40, and the magnetic sensor 45 is protected from the foreign matter to detect the magnetic sensor 45. Accuracy is ensured.

  In the illustrated case, the gap in the direction from the power transmission unit 25 toward the rotary shaft 30 is also formed in a labyrinth shape, and a part of the storage case 21 in which foreign matter that has entered the storage case 21 enters the recess 52 is illustrated. It is difficult to get over the rotary shaft 30 and the bearing 31.

  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 present embodiment, the slide door 2 is illustrated as an opening / closing body, but the present invention is not limited to this, and the present invention is also applied to a back door, a sunroof, a trunk lid for opening / closing a trunk room, and the like. be able to. Although a Hall element is used as the magnetic sensor 45 as the detection body, the present invention is not limited to this, and other magnetic sensors may be used as long as the change in the magnetic field of the magnet 40 accompanying the rotation of the drum 20 can be detected. Anyway.

  In the present embodiment, the cable as the power transmission member is divided into the open side cable 15 and the closed side cable 16, but one continuous cable may be used. One end side is used as the open side cable 15, and the other end side of the cable is used as the closed side cable 16. Further, as the power transmission member, a belt, a chain or an arm may be used in addition to the cables 15 and 16, and when using a belt, a pulley is used as a rotating body, and when using a chain, a rotating body is used. Sprockets are used as

  In the present embodiment, the outer diameter of the accommodating portion 41 is formed larger than the outer diameter of the power transmission portion 25, but the outer diameter of the power transmission portion 25 may be larger.

  Further, in the present embodiment, the accommodating portion 41 is provided at the end portion in the axial direction on the opposite side of the electric motor 17 of the power transmission portion 25, but not limited thereto, the shaft on the electric motor 17 side of the power transmission portion 25. It may be provided at the end of the direction, and this makes it possible to implement the present invention even if the in-vehicle layout of the automatic opening / closing device changes. At that time, as a structure for attaching the power transmission unit 25 to the storage case 21, the power transmission unit facing surface 48 part of the storage case 21 is formed as a separate body, and after the power transmission unit 25 is incorporated into the storage case 21, A cylindrical member having the power transmission portion facing surface 48 is assembled in a watertight state and covered with the case cover 22.

It is a top view which shows the vehicle provided with the opening / closing body. FIG. 2 is a perspective view showing the vehicle automatic opening / closing apparatus shown in FIG. It is a perspective view which expands and shows the automatic opening / closing apparatus for vehicles shown in FIG. It is sectional drawing of the direction in alignment with the AA shown in FIG. It is a principal part enlarged view of the automatic opening / closing apparatus for vehicles shown in FIG.

Explanation of symbols

1 Vehicle 2 Sliding door (opening / closing body)
13 Automatic opening / closing device for vehicle 15 Open side cable (power transmission member)
16 Closed cable (power transmission member)
17 Electric motor (drive source)
20 drums (rotating body)
21 Storage Case 24 Guide Groove 25 Power Transmission Part 25a Cylindrical Surface 26 Entrance / Exit Hole 28 Discharge Port 30 Rotating Shaft (Rotation Center Axis)
40 Magnet (Detected part)
41 container 44 disk member (detected body)
45 Magnetic sensor (detector)
48 Power transmission part facing surface 49 Housing part facing surface

Claims (7)

An automatic opening and closing device for a vehicle that automatically opens and closes an opening and closing body provided in a vehicle,
A rotating body that is rotatably housed inside the housing case and is driven to rotate by a drive source;
A power transmission member provided between the power transmission portion of the rotating body and the opening / closing body, and transmitting power of the rotating body to the opening / closing body;
A detected body that is formed in a disc shape with a detected portion on the outer periphery, and is rotated into the concave housing portion formed at one axial end of the rotating body and rotates together with the rotating body,
An automatic opening and closing device for a vehicle, comprising: a detection body that is mounted on the housing case so as to face the detected portion and detects the rotation of the rotating body by the detected body.   2. The automatic opening / closing device for a vehicle according to claim 1, wherein the housing portion is formed at an axial end opposite to the drive source of the rotating body.   The automatic opening / closing device for a vehicle according to claim 1 or 2, wherein the power transmission portion and the housing portion are integrally formed of a resin material.   The automatic opening / closing device for a vehicle according to any one of claims 1 to 3, wherein an outer diameter of the housing portion is formed larger than an outer diameter of the power transmission portion.   5. The automatic opening / closing device for a vehicle according to claim 1, wherein the power transmission unit facing surface disposed in the housing case in the vicinity of the power transmission unit and the housing unit are disposed in the housing case. An automatic opening / closing device for a vehicle, wherein a gap between the housing case and the rotating body is formed in a labyrinth shape.   The automatic vehicle opening / closing device according to any one of claims 1 to 5, wherein the power transmission portion has a cylindrical surface in which a guide groove is formed in a spiral shape, and the guide groove is used as the power transmission member. The housing case is formed with an entrance / exit hole through which the cable can move freely and a discharge port through which foreign matter that has entered the housing case through the cable is discharged. An automatic opening and closing device for a vehicle.   The automatic opening and closing device for a vehicle according to any one of claims 1 to 6, wherein a rotation center axis of the rotating body is arranged vertically, and the housing portion is arranged above the power transmission unit. Automatic vehicle opening and closing device.

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