JP4878560B2 - Automatic switchgear for vehicles - Google Patents

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 body.

  Conventionally, in a wagon car or a one-box car, a sliding 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. Such sliding doors are usually opened and closed manually. However, in recent years, an automatic opening and closing device is mounted on a vehicle, and the automatic opening and closing device automatically opens and closes the sliding door. There are many vehicles.

  As such an automatic opening and closing device, a cable (strip body) connected to the sliding door from the vehicle front-rear direction is guided to a drive unit disposed on the vehicle body via reversing pulleys disposed at both ends of the guide rail, A cable is wound around a drive drum (drive rotator) provided in the drive unit, and the drum is rotated by a drive source such as an electric motor so that the slide door is automatically opened and closed while being pulled by the cable. A cable type is known.

In the cable type automatic opening / closing device, since the moving path length of the cable changes when the sliding door is guided by the curved portion of the guide rail and pulled inside the vehicle body, the change of the moving path length is absorbed. A tensioner mechanism is required. For example, in Patent Document 1, a pair of fixed pulleys that guide a cable drawn from a drum to an open side and a closed side are provided on both sides of the drum, and the fixed pulley is centered between the fixed pulley and the drum, respectively. There is described a tensioner mechanism in which movable pulleys are provided so as to be swingable, and these movable pulleys are urged toward the cable side by an elastic body such as a spring to apply a predetermined tension to the cable.
Japanese Patent Laid-Open No. 10-131612

  However, in the tensioner mechanism disclosed in Patent Document 1, a movable pulley that swings around a fixed pulley is urged in the swing direction by a spring to apply tension to the cable. Can be efficiently transmitted to the movable pulley to increase the responsiveness to changes in the tension of the movable pulley, while when the load is suddenly applied from the cable or the load applied from the cable is suddenly reduced, There is a problem that the vibration in the moving direction is difficult to converge, thereby impairing the smooth operation of the sliding door.

  An object of the present invention is to improve the convergence of the tensioner mechanism against a rapid change in tension of the striated body and increase the operation accuracy of the opening / closing body.

  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 a vehicle body, and is provided in a main body case disposed in the vehicle body, the main body case, and a drive source. A driving rotator that is rotationally driven by the motor, a cord that is wound around the driving rotator at one end, and the other end is connected to the opening / closing member; A tensioner mechanism that applies a predetermined tension to the movable pulley, and the tensioner mechanism has an axial direction with respect to a movable pulley over which the strip body is stretched and a load direction applied from the strip body to the movable pulley. A guide including an inclined guide shaft supported by the main body case, a holder main body portion that rotatably supports the movable pulley, and a slide portion that is movably mounted on the guide shaft along the guide shaft. And Rihoruda, wherein mounted on the guide shaft, characterized in that it comprises a spring member for urging the pulley holder in a direction to impart tension to the rope body.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that an axial direction of the guide shaft is inclined by approximately 45 degrees with respect to a load direction applied from the cable body to the movable pulley.

  The automatic opening and closing device for a vehicle according to the present invention is characterized in that the holder main body is provided so as to be shifted toward the driving rotating body with respect to the slide portion.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the axis of the holder main body is shifted to the spring member side along the axial direction of the guide shaft with respect to the axial center position of the slide portion. To do.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the tensioner mechanism is assembled to the case in a unitized state in advance.

  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 a vehicle body, and is provided in a main body case disposed in the vehicle body, the main body case, and a drive source. A driving rotator that is rotationally driven by the motor, a cord that is wound around the driving rotator at one end, and the other end is connected to the opening / closing member; A tensioner mechanism for applying a predetermined tension to the movable body, the tensioner mechanism rotatably supporting the movable pulley, the guide shaft supported by the main body case, and the movable pulley. A pulley holder having a holder main body portion and a slide portion movably attached to the guide shaft along the guide shaft, and attached to the guide shaft, in the direction of applying tension to the cable body And a spring member for urging the Rihoruda, characterized in that said holder main body is provided by shifting the rotary section for the drive to the sliding portion.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the axis of the holder main body is shifted to the spring member side along the axial direction of the guide shaft with respect to the axial center position of the slide portion. To do.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the tensioner mechanism is assembled to the case in a unitized state in advance.

  According to the present invention, since the guide shaft is inclined in the axial direction with respect to the load direction applied to the movable pulley from the rope body, the load between the guide shaft and the slide portion is caused by the load applied to the movable pulley from the rope body. A sliding resistance is generated in the belt, and this sliding resistance can suppress vibration in the direction along the guide shaft of the pulley holder, that is, the movable pulley, due to the change in the tension of the cable body, thereby smoothly operating the opening / closing body. Can do.

  According to the present invention, since the axial direction of the guide shaft is inclined by approximately 45 degrees with respect to the load direction applied to the movable pulley from the rope body, an appropriate sliding resistance is provided between the guide shaft and the slide portion. The slide part can be smoothly operated while causing

  According to the present invention, the holder main body portion is provided so as to be shifted toward the driving rotary body with respect to the slide portion, so that the slide portion can be smoothly moved while generating an appropriate sliding resistance between the guide shaft and the slide portion. Can be operated.

  According to the present invention, the shaft center of the holder main body is shifted from the axial center position of the slide portion along the axial direction of the guide shaft toward the spring member. It is possible to increase the sliding resistance between the guide shaft and the slide portion by urging the slide portion with respect to the guide shaft by the applied load.

  According to the present invention, since the tensioner mechanism is assembled to the case in a unitized state in advance, the assembly work of the tensioner mechanism to the main body case can be facilitated.

  In addition, according to the present invention, the holder main body portion is provided so as to be shifted toward the driving rotary body with respect to the slide portion, so that it slides between the guide shaft and the slide portion due to the load applied to the movable pulley from the rope body. Resistance is generated, and this sliding resistance can suppress vibration in the direction along the guide shaft of the pulley holder, that is, the movable pulley, due to a change in the tension of the cable body, thereby enabling the opening / closing body to operate smoothly.

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

  FIG. 1 is a side view of a one-box type vehicle, and FIG. 2 is a plan view showing a structure for mounting the slide door shown in FIG.

  The vehicle 11 shown in FIG. 1 is provided with a slide door 13 as an opening / closing body on the side of the vehicle body 12. The slide door 13 is guided by a guide rail 14 fixed to the side of the vehicle body 12, and can be opened and closed between a fully closed position indicated by a solid line and a fully open position indicated by a two-dot chain line in FIG. When getting on and off, loading and unloading, etc., it is opened to a desired opening.

  As shown in FIG. 2, the slide door 13 is provided with a roller assembly 15, and the roller assembly 15 is guided by the guide rail 14 so that the slide door 13 is movable in the front-rear direction of the vehicle 11. . In addition, a curved portion 14a that is curved toward the vehicle interior side is provided on the vehicle front side of the guide rail 14, and when the roller assembly 15 is guided to the curved portion 14a, the slide door 13 is flush with the side surface of the vehicle body 12. Thus, it is drawn inside the vehicle body 12 so as to be closed. Although not shown, the roller assembly 15 is also provided in the upper and lower portions (upper portion and lower portion) of the front end portion of the slide door 13 in addition to the portion (center portion) shown in the drawing, and the opening of the vehicle body 12 corresponding to these is provided. Guide rails (not shown) corresponding to the upper and lower portions are also provided in the upper and lower parts, and the slide door 13 is supported by the vehicle body 12 at a total of three locations.

  The vehicle 11 is provided with a vehicle automatic opening / closing device 21 (hereinafter referred to as an opening / closing device 21) in order to automatically open and close the slide door 13. The opening / closing device 21 includes a drive unit 22 disposed inside the vehicle body 12 adjacent to a substantially central portion of the guide rail 14 in the vehicle front-rear direction, and a reversing pulley 23a provided at an end of the guide rail 14 on the vehicle rear side. An open side cable 24a as a cable body connected to the roller assembly 15 (slide door 13) from the open side (vehicle rear side) via a cable, and a reversing pulley 23b provided at the end of the guide rail 14 on the vehicle front side And a closed cable 24b as a cable body connected to the roller assembly 15 (sliding door 13) from the closed side (vehicle front side) through the cable, and by pulling the open cable 24a with the drive unit 22 The sliding door 13 is automatically opened, and the closing cable 24b is pulled by the drive unit 22 so that the sliding door 13 is automatically closed. There.

  3 is a front view showing details of the drive unit shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line AA in FIG.

  As shown in FIGS. 3 and 4, the drive unit 22 includes a resin main body case 25. As shown in FIG. 3, the main body case 25 includes three attachment legs 26. Each of the attachment legs 26 is provided with a bolt hole 26a, and a bolt (not shown) is inserted through each bolt hole 26a. ), The main body case 25, that is, the drive unit 22 is fixed to the panel of the vehicle body 12.

  An electric motor 27 serving as a drive source for the drive unit 22 is attached to the main body case 25. As the electric motor 27, a DC motor with a brush is used, and its rotating shaft 27a is rotatable in both forward and reverse directions. In the present embodiment, the brushed electric motor 27 is used as a drive source. However, the present invention is not limited to this, and another electric motor such as a brushless motor may be used.

  As shown in FIG. 4, the main body case 25 is provided with a speed reduction mechanism accommodation chamber 28, and the speed reduction mechanism accommodation chamber 28 is closed by a resin cover 31 attached to the main body case 25. The electric motor 27 is attached to the main body case 25 adjacent to the speed reduction mechanism accommodation chamber 28, and the rotation shaft 27 a protrudes inside the speed reduction mechanism accommodation chamber 28. The main body case 25 is provided with a drum storage chamber 33 adjacent to the speed reduction mechanism storage chamber 28 via a partition wall 32, and a drive shaft 35 is rotatable in the main body case 25 by a bearing 34 attached to the partition wall 32. It is supported. The drive shaft 35 is disposed across the speed reduction mechanism accommodation chamber 28 and the drum accommodation chamber 33, and its base end protrudes into the speed reduction mechanism accommodation chamber 28 and is rotatably supported by the cover 31 by a bearing 36. Yes.

  A speed reduction mechanism 37 is accommodated in the speed reduction mechanism accommodation chamber 28, and the rotation of the rotary shaft 27 a is reduced to a predetermined rotational speed by the speed reduction mechanism 37 and transmitted to the drive shaft 35. That is, the drive shaft 35 is driven by the electric motor 27 to rotate. The speed reduction mechanism 37 is a worm gear mechanism including a worm 37a and a worm wheel 37b. The worm 37a is formed integrally with the rotary shaft 27a on the outer peripheral surface of the rotary shaft 27a, and the worm wheel 37b is relative to the drive shaft 35. The main body case 25 is supported so that it can rotate freely.

  An electromagnetic clutch 41 is accommodated in the speed reduction mechanism accommodating chamber 28, and power transmission between the worm wheel 37 b and the drive shaft 35 is interrupted by the electromagnetic clutch 41. The electromagnetic clutch 41 is a so-called friction type, and includes a rotor 42 and an armature 43 that are disposed with their friction surfaces facing each other. The rotor 42 is supported by the drive shaft 35 so as to be relatively rotatable, and is connected to the worm wheel 37b via a ring member 44 so as to rotate together with the worm wheel 37b. On the other hand, the armature 43 is connected to the drive shaft 35 via a leaf spring, rotates together with the drive shaft 35, and is movable in a predetermined range in the axial direction. A clutch yoke 45 is disposed on the back surface of the rotor 42, and a clutch coil 46 is accommodated in the clutch yoke 45. When the clutch coil 46 is energized, the armature 43 is attracted to the clutch yoke 45. . Therefore, when the clutch coil 46 is energized, the friction surfaces of the rotor 42 and the armature 43 are brought into pressure contact with each other so that the electromagnetic clutch 41 is connected, and power is transmitted between the worm wheel 37b, that is, the electric motor 27 and the drive shaft 35. The On the other hand, when the energization of the clutch coil 46 is stopped, the frictional force between the rotor 42 and the armature 43 is reduced, and the electromagnetic clutch 41 is disconnected, and the power between the worm wheel 37b and the drive shaft 35 is reduced. The transmission path is interrupted.

  A driving drum 51 as a driving rotator is rotatably accommodated in the drum housing chamber 33. The driving drum 51 is formed in a cylindrical shape having a helical guide groove 51a on the outer peripheral surface by a resin material, and has a cylindrical boss portion 51b at its axis, and the driving drum 51 is driven in the boss portion 51b. Attached to the tip of the shaft 35. That is, the drive drum 51 is mounted on the drive shaft 35 so that the drive shaft 35 is inserted through the boss portion 51b. A metal reinforcing member 52 is embedded in the driving drum 51 so as to be shifted in the axial direction with respect to the boss portion 51 b, and the reinforcing member 52 is engaged with a serration 35 a provided on the driving shaft 35. ing. Further, the reinforcing member 52 abuts on the stepped portion 35 b of the drive shaft 35 to position the drive drum 51 in the axial direction. In this state, the drive drum 51 is attached to the tip of the drive shaft 35 by the nut 53. It is supposed to be fixed. Thereby, when the electric motor 27 is operated, the driving drum 51 rotates together with the driving shaft 35. That is, the driving drum 51 is driven to rotate by the electric motor 27.

  The open-side cable 24 a guided by the drive unit 22 is drawn into the main body case 25 from a cable drawing portion 25 a provided in the main body case 25. The open cable 24a is fixed to a locking portion 55a formed on an axial end surface on the side facing the partition wall 32 of the driving drum 51 at a cable end 54a provided at the end, and the axial end surface It is wound around the driving drum 51 along the guide groove 51a from the side. Similarly, the closed cable 24 b guided by the drive unit 22 is drawn into the main body case 25 from a cable drawing portion 25 b provided in the main body case 25. The closed cable 24b is fixed to a locking portion 55b formed on the axial end surface on the case opening side of the driving drum 51 at a cable end 54b provided at the end thereof, and is guided from the axial end surface side. It is wound around the driving drum 51 in the same direction as the open cable 24a along the groove 51a.

  The drum housing chamber 33 is partitioned and formed by a partition wall 32 and a pair of semi-cylindrical outer peripheral walls 56a and 56b that project from the partition wall 32 in the axial direction, and a portion between the outer peripheral walls 56a and 56b is a cable. It is a drawer part. The outer peripheral surface of the driving drum 51 is covered with these outer peripheral walls 56a and 56b except for the cable lead-out portion, so that the cables 24a and 24b are protected from contact with foreign matter and the like. Yes. Further, the distance between the outer peripheral surface of the driving drum 51 and the inner surfaces of the outer peripheral walls 56a and 56b is equal to or less than the diameter of each cable 24a and 24b, so that the cables 24a and 24b wound around the driving drum 51 are The outer peripheral walls 56a and 56b are held inside the guide groove 51a and are prevented from being detached from the driving drum 51.

  In the present embodiment, the outer peripheral walls 56a and 56b are formed so as to cover the outer peripheral surface of the driving drum 51 in a range excluding the cable pull-out portion. If at least a part of the outer peripheral surface is covered, the size and shape of the outer peripheral walls 56a and 56b can be arbitrarily set.

  FIG. 5 is a cross-sectional view showing details of the temporary holding portion provided on the drive shaft, and FIG. 6 is a cross-sectional view showing a state where the driving drum is temporarily held by the temporary holding portion, and FIGS. (c) is a perspective view which shows the modification of the temporary holding part shown in FIG. 5, respectively.

  The opening / closing device 21 is provided with a temporary holding portion 61 for facilitating the operation of winding the cables 24a, 24b around the driving drum 51. The temporary holding portion 61 is provided on the drive shaft 35 and is formed in a columnar shape aligned in the axial direction with respect to the serration 35 a, and engages with the boss portion 51 b when the drive drum 51 is mounted on the drive shaft 35. It is like that. Here, as shown in FIG. 5, the diameter D1 of the temporary holding portion 61 is formed to be slightly larger than the inner diameter D2 of the boss portion 51b of the driving drum 51, and the temporary holding portion 61 is in relation to the boss portion 51b. It functions as a light press-fit part. That is, by pushing the driving drum 51 in the axial direction toward the driving shaft 35 with a predetermined load that is equal to or more than its own weight, the boss portion 51b is press-fitted into the temporary holding portion 61 so that the driving drum 51 is in a normal fixed position. The reinforcing member 52 can be mounted at a position where it comes into contact with the stepped portion 35b. Therefore, even if the driving drum 51 is attached to the driving shaft 35, the boss portion 51b is not press-fitted into the temporary holding portion 61 by the weight of the driving drum 51. As shown in FIG. In a state where 51b is engaged with the temporary holding portion 61, the temporary holding portion 61 temporarily holds the temporary holding position before the regular fixing position. At this time, the outer peripheral surface of the driving drum 51 protrudes in the axial direction from the drum housing chamber 33, that is, the outer peripheral walls 56a and 56b, by one turn of the cable of the guide groove 51a.

  Next, a procedure for winding the cables 24a and 24b around the driving drum 51 in the opening / closing device 21 provided with such a temporary holding portion 61 will be described.

  First, the cable end 54a of the open-side cable 24a is fixed to the engaging portion 55a of the driving drum 51, and a predetermined number of times along the guide groove 51a from the axial end surface side facing the partition wall 32 of the driving drum 51. The open side cable 24a is wound around the driving drum 51. Next, the driving drum 51 with the open-side cable 24a wound thereon is inserted into the drum housing chamber 33 from the axial direction, and is attached to the driving shaft 35 at the boss portion 51b. At this time, the open-side cable 24a wound around the driving drum 51 is drawn out of the drum housing chamber 33 from the cable drawing portion between the outer peripheral walls 56a and 56b. When the driving drum 51 is mounted on the driving shaft 35, the boss portion 51b engages with the temporary holding portion 61 provided on the driving shaft 35, and as shown in FIG. 61 is temporarily held at the temporary holding position before the regular fixed position.

  When the driving drum 51 is temporarily held by the temporary holding portion 61, one turn of the cable in the guide groove 51a protrudes in the axial direction from the outer peripheral walls 56a and 56b and is exposed to the outside. In this state, the closed cable 24b The cable end 54 b is fixed to the engaging portion 55 b of the drum 51 and the cable 24 b is wound around the guide groove 51 a protruding from the outer peripheral walls 56 a and 56 b of the driving drum 51. As described above, when the operation of winding the closed cable 24b around the driving drum 51 is performed, the driving drum 51 is temporarily held by the temporary holding portion 61, and a part of the guide groove 51a extends from the outer peripheral walls 56a and 56b. Since it protrudes in the axial direction, it is not necessary for the operator to hold the driving drum 51 in the state of being pulled out from the drum housing chamber 33 by hand, and the work of winding the cables 24a, 24b around the driving drum 51 becomes easy.

  When the closed cable 24b is wound around the drive drum 51, a nut 53 is then screwed to the tip of the drive shaft 35. By tightening the nut 53, the boss portion 51b is temporarily loaded with a load greater than a predetermined load. It is press-fitted into the holding part 61. When the driving drum 51 moves to the regular fixed position, the reinforcing member 52 comes into contact with the stepped portion 35b, and the reinforcing member 52 is sandwiched between the nut 53 and the stepped portion 35b. 35 to be fixed. In the present embodiment, the boss portion 51b is press-fitted into the temporary holding portion 61 by tightening the nut 53. However, the present invention is not limited to this, and the operator pushes the driving drum 51 by hand. The nut 53 may be tightened after the 51b is press-fitted into the temporary holding portion 61.

  As described above, in the opening / closing device 21, the temporary holding portion 61 is provided on the drive shaft 35, and a part of the driving drum 51 mounted on the drive shaft 35 by the temporary holding portion 61 is pivoted from the outer peripheral walls 56 a and 56 b. Since the drive drum 51 is temporarily held in a state protruding in the direction, it is not necessary to hold the drive drum 51 by hand, and the winding work of the cables 24a and 24b around the drive drum 51 can be facilitated.

  In the present embodiment, the diameter D1 of the temporary holding portion 61 is formed to be slightly larger than the inner diameter D2 of the boss portion 51b of the driving drum 51. However, the present invention is not limited to this. ), The temporary holding portion 61 may be formed as a protrusion protruding from the outer peripheral surface of the drive shaft 35, and the boss portion 51b of the driving drum 51 may be press-fitted outside these protrusions. Further, as shown in FIG. 7B, the temporary holding portion 61 is formed as a surface processing such as a knurling that roughens the outer peripheral surface of the drive shaft 35 to increase the frictional resistance with the boss portion 51b of the drive drum 51. You may make it function as a light press-fit part. Further, as shown in FIG. 7C, the temporary holding portion 61 may be formed in a serrated shape, and the boss portion 51 b may be press-fitted into the temporary holding portion 61. Although not shown, a temporary holding function may be provided on the boss portion 51b side. For example, the diameter D1 of the temporary holding portion 61 is formed to be slightly larger than the inner diameter D2 of the boss portion 51b of the driving drum 51 as in the above example, and an axial slit or the like is formed in the boss portion 51b of the driving drum 51. The boss portion 51b may be configured to expand in diameter when the boss portion 51b is press-fitted into the temporary holding portion 61.

  In the present embodiment, when the driving drum 51 is temporarily held by the temporary holding portion 61, the outer peripheral surface of the driving drum 51 is projected from the outer peripheral walls 56a and 56b in the axial direction by one turn of the cable. Not limited to this, as long as at least a part around which the cables 24a and 24b of the driving drum 51 are wound protrudes from the outer peripheral walls 56a and 56b in the axial direction, the protruding amount can be arbitrarily set.

  8 is a perspective view showing details of the tensioner mechanism shown in FIG. 3, FIG. 9 is a sectional view taken along line BB in FIG. 3, and FIG. 10 is a sectional view taken along line CC in FIG. is there. 11 is a front view showing the operating state of the tensioner mechanism shown in FIG. 3, and FIG. 12 is a characteristic diagram showing the convergence characteristics of vibration of the tensioner mechanism in comparison with the comparative example.

  As shown in FIG. 3, the main body case 25 is provided with a tensioner storage chamber 62 adjacent to the drive drum 51, that is, the drum storage chamber 33, in the radial direction of the drive drum 51 (upper side in the illustrated case). The tensioner housing chamber 62 has an open side tensioner mechanism 63a for applying a predetermined tension to the open side cable 24a and a close side tensioner mechanism 63b for applying a predetermined tension to the closed side cable 24b. And is housed. As shown in FIG. 4, the tensioner housing chamber 62 is closed by a cover 64, and the tensioner mechanisms 63 a and 63 b are covered by the cover 64.

  The details of the tensioner mechanisms 63a and 63b will be described below. However, the open-side tensioner mechanism 63a and the closed-side tensioner mechanism 63b basically have the same structure. A description will be given based on the tensioner mechanism 63a on the side.

  As shown in FIG. 8, the open-side tensioner mechanism 63a (hereinafter referred to as the tensioner mechanism 63a) includes a guide shaft 65 formed of a steel material in a rod shape having a circular cross section and a resin pulley holder 66. The pulley holder 66 includes a slide portion 66a formed in a cylindrical shape, and the slide portion 66a is mounted on the guide shaft 65 so as to be movable along the guide shaft 65 and rotatable about the axis of the guide shaft 65. Yes. Thus, the pulley holder 66 is movable in the axial direction along the guide shaft 65 and is rotatable around the guide shaft 65 around the axis of the guide shaft 65.

  Stoppers 67a and 67b are provided at both ends of the guide shaft 65, respectively, and the moving range of the slide portion 66a is limited to the inside of these stoppers 67a and 67b. A spring 68 as a spring member is mounted between the one stopper 67a and the slide portion 66a, and the slide portion 66a is urged toward the other stopper 67b by the spring 68.

  The pulley holder 66 includes a holder main body portion 66b formed integrally with the slide portion 66a. The holder main body portion 66b is displaced toward the driving drum 51 with respect to the slide portion 66a, and its axis is located at the slide portion 66a. The axial position of the guide shaft 65 is displaced toward the spring 68 along the axial direction of the guide shaft 65.

  A movable pulley 72 is rotatably supported by the holder main body 66b by a support shaft 71. After the cable 24a drawn into the main body case 25 from the cable drawing portion 25a is passed over the movable pulley 72, a driving drum is provided. 51 is guided. The movable pulley 72 is formed to have a smaller diameter than the driving drum 51, and a groove 72a having a V-shaped cross section for engaging the cable 24a is provided on the outer periphery thereof. Further, in order to prevent the cable 24a from being detached from the movable pulley 72, the holder main body 66b is provided with a guide wall 73 integrally with the holder main body 66b. The guide wall 73 is formed in an arc shape facing the outer peripheral surface of the movable pulley 72 with a predetermined interval, and includes approximately 90 degrees along the outer peripheral surface of the movable pulley 72 including a portion overlapping the slide portion 66a. It is formed in the range. As a result, as shown in FIG. 10, the cable 24 a hung over the movable pulley 72 is disposed between the movable pulley 72 and the guide wall 73, and the tension is excessively loosened so that the cable 24 a is moved to the movable pulley. Even if the cable 24a is detached from the cable 72a, the cable 24a is held between the movable pulley 72 and the guide wall 73. When the tension returns to an appropriate range, the cable 24a naturally engages with the movable pulley 72. Yes.

  The tensioner mechanism 63a is preassembled with a guide shaft 65, a pulley holder 66, a spring 68, etc., and is formed as one unit as shown in FIG. 8, and is assembled to the main body case 25 in such a unitized state. A mounting groove 74 is provided in the main body case 25, and the tensioner mechanism 63 a is assembled in the tensioner housing chamber 62 with both ends of the guide shaft 65 being supported by these mounting grooves 74.

  As shown in FIGS. 3 and 4, a pair of fixed pulleys 75 a and 75 b are rotatably supported by the support shaft 76 in the main body case 25, located inside the tensioner housing chamber 62. These fixed pulleys 75a and 75b are arranged in the axial direction and are disposed between the tensioner mechanisms 63a and 63b, and the open-side cable 24a drawn into the main body case 25 from the cable drawing-in portion 25a passes through the fixed pulley 75a. The closed-side cable 24b drawn from the cable pulling portion 25b to the main body case 25 from the predetermined direction through the fixed pulley 75b from the predetermined direction to the movable pulley 72 of the tensioner mechanism 63a from the predetermined direction. 72. The cable ends 54 a and 54 b of the cables 24 a and 24 b are formed smaller than the distance between the guide wall 73 and the outer peripheral surface of the movable pulley 72, and before the tensioner mechanisms 63 a and 63 b are assembled to the main body case 25. It is inserted between the guide wall 73 and the movable pulley 72.

  When the tensioner mechanism 63a is attached to the main body case 25, the pulley holder 66, that is, the movable pulley 72, is urged by the spring 68 along the guide shaft 65 in a direction away from the driving drum 51 and the fixed pulleys 75a and 75b. Thus, a predetermined tension is applied to the open cable 24a by the open tensioner mechanism 63a. For example, when the roller assembly 15 is guided by the curved portion 14a of the guide rail 14 and the routing route of the cables 24a and 24b becomes longer, the movable pulley 72 resists the spring force of the spring 68 together with the pulley holder 66, as shown in FIG. Then, it moves downward in the figure along the guide shaft 65 to keep the tension of the cables 24a, 24b within a predetermined range.

  Here, as shown in FIG. 11, the guide shaft 65 of the tensioner mechanism 63a has its axial direction parallel to a line segment connecting the axis of the drive drum 51 and the axis of the fixed pulleys 75a and 75b. The axial direction is inclined with respect to the direction of the load applied to the movable pulley 72 from the cable 24a. That is, the guide shaft 65 has an axial direction in which the tension direction T1 of the open side cable 24a1 spanned between the movable pulley 72 and the fixed pulley 75a and the open side spanned between the movable pulley 72 and the driving drum 51. The cable 24a2 is supported by the main body case 25 so as to be inclined with respect to the direction of the resultant force Fc of the tension T2. Accordingly, the frictional resistance between the guide shaft 65 and the slide portion 66a moving along the guide shaft 65 is increased by the component force Fca in the direction orthogonal to the axial direction of the guide shaft 65 of the resultant force Fc. The pulley holder 66 moves along the guide shaft 65 to a position where the component force Fcb in the direction along the guide shaft 65 and the spring force Fk of the spring 68 are balanced. Therefore, even if the load applied to the movable pulley 72 from the open cable 24a, that is, the resultant force Fc, changes abruptly and the pulley holder 66 reciprocates or vibrates in the axial direction along the guide shaft 65, the vibration is generated with the guide shaft 65. It is attenuated by sliding friction with the slide portion 66a.

In the state of FIG. 11, the condition that the movable pulley 72 is stationary in the axial direction is that the spring force of the spring 68 is Fk, the winding angle of the cable 24a around the movable pulley 72 is α, the resultant force Fc and the axial direction of the guide shaft 65 are If the angle formed is β, the coefficient of static friction is μ1, and T1 = T2 = T,
Fk = 2T · SIN (α / 2) * (COSβ−μ1 · SINβ) (1)
It is represented by

Next, the conditions for the movable pulley 72 to move downward in the figure along the guide shaft 65 from the state shown in FIG.
Fk <2T · SIN (α / 2) * (COSβ−μ1 · SINβ) (2)
In addition, the condition for the movable pulley 72 to continue to move in the axial direction along the guide shaft 65 is that Fk <2T · SIN (α / 2) * (COSβ− μ2 · SINβ) (3)
It becomes.

  From the equations (2) and (3), as the angle α approaches 180 ° and the angle β approaches 0 °, the movable pulley 72 becomes easier to move along the guide shaft 65, and the angles α and β approach 90 °. It can be seen that the movable pulley 72 is less likely to move in the direction along the guide shaft 65. Accordingly, it is understood that the tension T of the cable 24a needs to be sufficiently increased with respect to the spring force Fk of the spring 68 in order to smoothly move the movable pulley 72 along the guide shaft 65 downward in the drawing. .

Next, the condition for the movable pulley 72 to move upward in the figure along the guide shaft 65 from the state shown in FIG.
Fk> 2T · SIN (α / 2) * (COSβ + μ1 · SINβ) (4)
The condition for the movable pulley 72 to continue to move in the axial direction along the guide shaft 65 is that Fk> 2T · SIN (α / 2) * (COSβ + μ2 · SINβ) (5)
It becomes.

  From Expressions (4) and (5), as the angle α approaches 180 ° and the angle β approaches 0 °, the movable pulley 72 becomes easier to move along the guide shaft 65, and the angles α and β approach 90 °. It can be seen that the movable pulley 72 is less likely to move in the direction along the guide shaft 65. Accordingly, it is understood that the tension T of the cable 24a needs to be sufficiently reduced with respect to the spring force Fk of the spring 68 in order to smoothly move the movable pulley 72 along the guide shaft 65 upward in the drawing. .

  As described above, in order to smoothly move the movable pulley 72 along the guide shaft 65 and to generate an appropriate frictional resistance between the guide shaft 65 and the slide portion 66a, the resultant force Fc and the shaft of the guide shaft 65 are used. It is desirable to set the angle β formed by the direction to about 45 °. In the present embodiment, when the slide door 13 moves to the vicinity of the fully closed position and the roller assembly 15 is guided by the curved portion 14a of the guide rail 14, the resultant force Fc and the axial direction of the guide shaft 65 are The formed angle is approximately 45 °. As a result, when the slide door 13 is in the vicinity of the fully closed position, the movable pulley 72 is smoothly operated, and an appropriate frictional resistance is generated between the guide shaft 65 and the slide portion 66a to thereby vibrate the movable pulley 72. It can be effectively suppressed.

  In order to smoothly move the movable pulley 72 along the guide shaft 65 and to generate an appropriate frictional resistance between the guide shaft 65 and the slide portion 66a, the movable pulley 72 is applied to the movable pulley 72 from the cable 24a. Even if the guide shaft 65 is not inclined with respect to the direction of the load, frictional resistance can also be generated by shifting the holder body 66b toward the drive drum 51 with respect to the slide 66a.

  In the opening / closing device 21, the guide shaft 65 is inclined with respect to the direction of the load applied to the movable pulley 72 from the cable 24a, thereby generating a sliding resistance between the guide shaft 65 and the slide portion 66a. Therefore, the vibration of the movable pulley 72 can be reduced as compared with the comparative example. In the opening / closing device 21, the holder main body 66b is shifted from the slide portion 66a toward the driving drum 51 so as to generate a sliding resistance between the guide shaft 65 and the slide portion 66a. As a result, vibration of the movable pulley 72 can be reduced. Thereby, as shown in FIG. 12, in this opening / closing device 21, even if the moving speed of the slide door 13 changes in vibration due to an abrupt change in cable tension, the door speed is compared with the comparative example indicated by the broken line in the figure. Thus, the sliding door 13 can be smoothly operated.

  As described above, in the opening / closing device 21, the guide shaft 65 is inclined with respect to the direction of the load applied to the movable pulley 72 from the cables 24a and 24b, whereby the sliding resistance is generated between the guide shaft 65 and the slide portion 66a. Therefore, the sliding resistance can suppress the vibration in the direction along the guide shaft 65 of the movable pulley 72 due to the tension change of the cables 24a and 24b. Thereby, the slide door 13 can be operated smoothly.

  In the opening / closing device 21, the axial direction of the guide shaft 65 is inclined by approximately 45 degrees with respect to the load direction applied to the movable pulley 72 from the cables 24a, 24b. The sliding portion 66a can be smoothly operated along the guide shaft 65 while generating an appropriate sliding resistance therebetween.

  Further, in the opening / closing device 21, the holder main body 66b is shifted from the slide portion 66a toward the drive drum 51, so that an appropriate sliding resistance is provided between the guide shaft 65 and the slide portion 66a. Thus, the slide portion 66a can be smoothly operated along the guide shaft 65.

  Further, in this opening / closing device 21, the shaft center of the holder main body 66b is provided so as to be shifted toward the spring 68 along the axial direction of the guide shaft 65 with respect to the axial center position of the slide 66a. The sliding force between the guide shaft 65 and the slide portion 66a can be increased by urging the slide portion 66a with respect to the guide shaft 65 by a load applied to the movable pulley 72 from 24a and 24b. . Thereby, a damping force can be increased on the slide portion 66a with respect to the guide shaft 65, and vibration in the direction along the guide shaft 65 of the movable pulley 72 can be further efficiently suppressed.

  In the opening / closing device 21, the holder main body 66b is shifted from the slide portion 66a toward the driving drum 51 so as to generate a sliding resistance between the guide shaft 65 and the slide portion 66a. Therefore, the sliding resistance can suppress the vibration in the direction along the guide shaft 65 of the movable pulley 72 due to the change in the tension of the cables 24a and 24b. Thereby, the slide door 13 can be operated smoothly.

  Further, in the opening / closing device 21, since the tensioner mechanisms 63a and 63b are assembled in the tensioner housing chamber 62 in a unitized state, the assembly work of the tensioner mechanisms 63a and 63b to the main body case 25 can be facilitated. it can.

  FIGS. 13A and 13B are explanatory views showing the rotation operation of the movable pulley.

  In the opening / closing device 21, when the driving drum 51 rotates, the drawing positions of the cables 24a and 24b from the driving drum 51 change in the axial direction. Therefore, in the tensioner mechanisms 63a and 63b provided in the opening / closing device 21, as described above, the slide portion 66a of the pulley holder 66 is attached to the guide shaft 65 so as to be rotatable around the guide shaft 65, so that the driving drum 51 is provided. The movable pulley 72 is made to follow the cables 24a and 24b even if the positions where the cables 24a and 24b are pulled out from the cable. That is, as shown in FIG. 13A, when the position where the cable 24 a is pulled out from the driving drum 51 is at a substantially intermediate position in the axial direction of the drum 51, the movable pulley 72 is connected to the cable 24 a from the driving drum 51. The pulling position of the cable 24a rotates from this state to the end of the driving drum 51 in the axial direction. In this case, as shown in FIG. 13B, the movable pulley 72 rotates around the guide shaft 65 together with the pulley holder 66 so as to be positioned between the drawing position from the driving drum 51 and the fixed pulley 75a. It has become. As described above, the movable pulley 72 rotates around the guide shaft 65 together with the pulley holder 66 following the change in the drawing position of the cable 24 a from the driving drum 51. Further, the rotation range of the pulley holder 66 is such that the support shaft 71 that supports the movable pulley 72 abuts against the main body case 25 or the cover 64, and as shown in FIG. Are restricted within an angle range of line segments a1 and a2 connecting both end portions in the axial direction, thereby preventing the movable pulley 72 from rotating excessively.

  Therefore, even if the position where the cable 24a is pulled out from the driving drum 51 changes, the inclination of the movable pulley 72 with respect to the cable 24a, that is, the inclination of the cable 24a with respect to the tangential direction of the movable pulley 72 is reduced. It is possible to prevent rubbing noise from being generated between the two. Further, since the cable 24a is not greatly inclined with respect to the movable pulley 72, the axial dimension of the movable pulley 72 can be reduced, and the switchgear 21 can be downsized.

  As described above, in this opening / closing device 21, the pulley holder 66 that rotatably holds the movable pulley 72 is mounted on the guide shaft 65 so as to be rotatable about the axis of the guide shaft 65. Even if the positions where the cables 24a and 24b are drawn from the driving drum 51 change in the axial direction as the 51 rotates, the movable pulley 72 can be tilted as the cables 24a and 24b move. Therefore, the inclination of the movable pulley 72 with respect to the cables 24a and 24b can be kept small, thereby reducing the rubbing noise between the movable pulley 72 and the cables 24a and 24b. Moreover, since the inclination of the movable pulley 72 with respect to the cables 24a and 24b can be kept small, the cables 24a and 24b can be prevented from being detached from the movable pulley 72 even if the axial dimension of the movable pulley 72 is reduced. . Thereby, the axial dimension of the movable pulley 72 can be reduced, the main body case 25 can be thinned in the axial direction of the drive shaft 35, and the opening / closing device 21 can be miniaturized. Further, when the axial dimension of the movable pulley 72 is reduced, the positions of the cables 24a and 24b inside the groove 72a of the movable pulley 72 are stabilized, so that the rubbing noise between the movable pulley 72 and the cables 24a and 24b is further increased. In addition, the operating resistance of the cables 24a and 24b can be reduced, and the operation of the cables 24a and 24b can be stabilized.

  14 is a perspective view of the drive unit shown in FIG. 3 as seen from the back side, and FIG. 15 is a perspective view showing a state where the substrate case shown in FIG. 14 is removed.

  The drive unit 22 is provided with a control device 81 for controlling the operation of the electric motor 27 and the electromagnetic clutch 41. As can be seen from FIG. 4, the control device 81 has a substrate case 82 fixed to the main body case 25 and a control substrate 83 accommodated in the substrate case 82.

  As shown in FIG. 15, the control board 83 has a structure in which an electronic component 83b such as a CPU or a memory is mounted on a board 83a, and a battery (not shown) mounted on the vehicle via an external connector 84 provided on the board 83a. And an open / close switch. A power supply connector 85 is provided on the substrate 83 a, and the power supply connector 85 is connected to a motor side connector 86 provided in the electric motor 27. Further, a clutch connector 87 is provided on the substrate 83a, and this clutch connector 87 is connected to a clutch side connector (not shown) from the electromagnetic clutch 41.

  When an open / close switch (not shown) is operated, the operation signal is input to the control board 83, and the control board 83 supplies power supplied from the battery according to the operation signal via the power supply connector 85 and the motor side connector 86. It supplies to the electric motor 27 and the operation control of the electric motor 27 is performed. Further, the control board 83 controls the operation of the electromagnetic clutch 41 by supplying electric power supplied from the battery to the electromagnetic clutch 41 via the clutch connector 87 and the clutch side connector at a desired timing.

  Here, as shown in FIG. 4, the main body case 25 is arranged such that the speed reduction mechanism accommodating chamber 28 in which the electromagnetic clutch 41 is accommodated and the tensioner accommodating chamber 62 are arranged in the axial direction and the radial direction with respect to the drum accommodating chamber 33. The control device 81 is located on the side of the speed reduction mechanism in a position overlapping the axial direction side of the driving drum 51 with respect to the tensioner housing chamber 62 of the main body case 25. ing. That is, the control device 81 is disposed in a dead space defined by a portion of the main body case 25 where the speed reduction mechanism accommodation chamber 28 is provided and a portion where the tensioner accommodation chamber 62 is provided. Thereby, the projection area seen from the axial direction of the drive drum 51 of the drive unit 22 is reduced, and the occupied space of the drive unit 22 is reduced.

  As described above, in the opening / closing device 21, the control device 81 is arranged so as to overlap the axial direction side of the driving drum 51 with respect to the portion of the main body case 25 that houses the tensioner mechanisms 63a and 63b. The opening / closing device 21 can be reduced in size by reducing the projected area of the drum 51 viewed from the axial direction. Further, since the control device 81 is arranged in the dead space of the drive unit 22, the occupied space of the drive unit 22 can be reduced.

  In the opening / closing device 21, since the control device 81 is configured to house the control substrate 83 inside the substrate case 82 fixed to the main body case 25, the main body case 25 and the control device 81 are configured integrally. Thus, the switchgear 21 can be reduced in size.

  Further, in the switchgear 21, the control board 83 is accommodated in the board case 82 fixed to the main body case 25, so that the power supply connector 85 of the control board 83 and the motor side connector 86 of the electric motor 27 are directly connected. Can do. Thereby, the external harness etc. for connecting the electric power feeding connector 85 and the motor side connector 86 become unnecessary, and the cost of this switchgear 21 can be reduced.

  Next, the operation of the opening / closing device 21 having such a structure will be described.

  When the opening side of an open / close switch (not shown) is operated and a command signal for operating the sliding door 13 in the opening direction is input to the control board 83, the electromagnetic clutch 41 is switched to the connected state, and then the electric motor 27 is moved in the forward direction. When driven, the driving drum 51 rotates clockwise in FIG. 3, the open cable 24a is wound around the drive drum 51, and the slide door 13 is pulled by the open cable 24a and moves toward the fully open position. To do. On the contrary, when a command signal for operating the sliding door 13 in the closing direction is input to the control board 83 by operating the closing side of the open / close switch, the electromagnetic clutch 41 is switched to the connected state, and then the electric motor 27 is rotated in the reverse direction. When driven, the drive drum 51 rotates counterclockwise in FIG. 3, the closed cable 24b is wound around the drive drum 51, and the slide door 13 is pulled by the closed cable 24b toward the fully closed position. Move. When the sliding door 13 is manually opened and closed, the electromagnetic clutch 41 is switched to the disconnected state while the electric motor 27 is stopped.

  On the other hand, when the slide door 13 is opened or closed automatically or manually and the roller assembly 15 passes through the curved portion 14a of the guide rail 14 to change the route length of the cables 24a and 24b, the movable pulley 72 is moved to the guide shaft 65. The tension of the cables 24a and 24b is adjusted to a predetermined range.

  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 present embodiment, the opening / closing body is a sliding door 13 that opens and closes in a sliding manner. However, the present invention is not limited to this, and a hinged lateral opening door for getting on / off and a back door provided at the rear end of the vehicle Other opening / closing bodies may be used.

  In this embodiment, two cables, that is, the open side cable 24a and the close side cable 24b are used. However, the present invention is not limited to this, and an intermediate portion of one cable is wound around the drive drum 51. The both end portions may be connected to the slide door 13.

It is a side view of a one box type vehicle. It is a top view which shows the attachment structure to the vehicle body of the slide door shown in FIG. It is a front view which shows the detail of the drive unit shown in FIG. It is sectional drawing which follows the AA line in FIG. It is sectional drawing which shows the detail of the temporary holding part provided in a drive shaft. It is sectional drawing which shows the state by which the driving drum was temporarily hold | maintained by the temporary holding part. (A)-(c) is a perspective view which shows the modification of the temporary holding | maintenance part shown in FIG. 5, respectively. It is a perspective view which shows the detail of the tensioner mechanism shown 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 front view which shows the operating state of the tensioner mechanism shown in FIG. It is a characteristic diagram which shows the convergence characteristic of the vibration of a tensioner mechanism compared with a comparative example. (A), (b) is explanatory drawing which shows rotation operation | movement of a movable pulley, respectively. It is the perspective view which looked at the drive unit shown in FIG. 3 from the back side. It is a perspective view which shows the state which removed the substrate case shown in FIG.

Explanation of symbols

11 Vehicle 12 Car body 13 Sliding door (opening / closing body)
14 guide rail 14a curved part 15 roller assembly 21 automatic opening / closing device for vehicle 22 drive unit 23a, 23b reversing pulley 24a open side cable (strand body)
24b Closed cable (strand)
25 Main body case 25a, 25b Cable lead-in part 26 Mounting leg part 26a Bolt hole 27 Electric motor (drive source)
27a Rotating shaft 28 Deceleration mechanism accommodation chamber 31 Cover 32 Partition 33 Drum accommodation chamber 34 Bearing 35 Drive shaft 35a Serration 35b Stepped portion 36 Bearing 37 Deceleration mechanism 37a Worm 37b Worm wheel 41 Electromagnetic clutch 42 Rotor 43 Armature 44 Ring member 45 Clutch yoke 46 Clutch coil 51 Driving drum 51a Guide groove 51b Boss portion 52 Reinforcing member 53 Nut 54a, 54b Cable end 55a, 55b Locking portion 56a, 56b Outer wall 61 Temporary holding portion 62 Tensioner housing chamber 63a Open side tensioner mechanism 63b Close side Tensioner mechanism 64 cover 65 guide shaft 66 pulley holder 66a slide portion 66b holder main body portions 67a, 67b stopper 68 spring (spring member)
71 support shaft 72 movable pulley 72a groove 73 guide wall 74 mounting groove 75a, 75b fixed pulley 76 support shaft 81 control device 82 board case 83 control board 83a board 83b electronic component 84 external connector 85 power supply connector 86 motor side connector 87 clutch connector D1 diameter D2 inner diameter T1, T2 tension Fc resultant force Fca component force Fcb component force Fk spring force a1, a2 line segment

Claims (8)

An automatic opening and closing device for a vehicle that automatically opens and closes an opening and closing body provided on a vehicle body,
A body case disposed on the vehicle body;
A drive rotator housed in the body case and driven to rotate by a drive source;
A rope body wound around the driving rotary body at one end side and connected to the opening / closing body at the other end;
A tensioner mechanism that is housed in the main body case and applies a predetermined tension to the cable body;
The tensioner mechanism is
A movable pulley over which the strip is stretched;
A guide shaft that is supported by the main body case by inclining an axial direction with respect to a load direction applied to the movable pulley from the cord body;
A pulley holder comprising a holder main body portion that rotatably supports the movable pulley and a slide portion that is movably mounted on the guide shaft along the guide shaft;
An automatic opening and closing device for a vehicle, comprising: a spring member attached to the guide shaft and biasing the pulley holder in a direction in which tension is applied to the cable body.   2. The automatic opening and closing device for a vehicle according to claim 1, wherein an axial direction of the guide shaft is inclined by approximately 45 degrees with respect to a load direction applied from the cable body to the movable pulley. apparatus.   The automatic opening / closing device for vehicles according to claim 1 or 2, wherein the holder main body portion is provided so as to be shifted toward the driving rotating body with respect to the slide portion.   4. The automatic opening / closing device for a vehicle according to claim 3, wherein the shaft center of the holder main body is shifted toward the spring member along the axial direction of the guide shaft with respect to the axial center position of the slide portion. An automatic opening / closing device for a vehicle.   The automatic opening and closing device for a vehicle according to any one of claims 1 to 4, wherein the tensioner mechanism is assembled to the case in a unitized state in advance. An automatic opening and closing device for a vehicle that automatically opens and closes an opening and closing body provided on a vehicle body,
A body case disposed on the vehicle body;
A drive rotator housed in the body case and driven to rotate by a drive source;
A rope body wound around the driving rotary body at one end side and connected to the opening / closing body at the other end;
A tensioner mechanism that is housed in the main body case and applies a predetermined tension to the cable body;
The tensioner mechanism is
A movable pulley over which the strip is stretched;
A guide shaft supported by the body case;
A pulley holder comprising a holder main body portion that rotatably supports the movable pulley and a slide portion that is movably mounted on the guide shaft along the guide shaft;
A spring member attached to the guide shaft and biasing the pulley holder in a direction to apply tension to the cable body;
An automatic opening and closing device for a vehicle, wherein the holder main body portion is provided so as to be shifted toward the driving rotary body with respect to the slide portion.   The automatic opening and closing device for a vehicle according to claim 6, wherein the shaft center of the holder main body is shifted toward the spring member along the axial direction of the guide shaft with respect to the axial center position of the slide portion. An automatic opening / closing device for a vehicle.   8. The vehicle automatic opening / closing device according to claim 6 or 7, wherein the tensioner mechanism is assembled to the case in a unitized state in advance.

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