JP2007217865A - Automatic opening/closing device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To downsize an automatic opening/closing device for a vehicle, which is equipped with a tensioner mechanism for imparting a predetermined tension to a cable body, and to improve the property of the layout of the automatic opening/closing device and the adaptability of the automatic opening/closing device to other types of vehicles by enhancing the degree of freedom in the pull-out direction of the cable body. <P>SOLUTION: Fixed pulleys 54 and 55 are relatively rotatably mounted on a supporting shaft 61 in an axially superposed state, and a pair of movable pulleys 56 and 57 is provided on both the sides of the fixed pulleys 54 and 55. A closing-side cable 25 is wound around a drum 52 via the fixed pulley 54 and the movable pulley 56, and an opening-side cable 26 is wound around the drum 52 via the fixed pulley 55 and the movable pulley 57. Torsion springs 71 and 72 make the respective movable pulleys 56 and 57 urged in the direction of getting away from the drum 52, so that the predetermined tension can be imparted to the respective cables 25 and 26. <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 body.

  Vehicles such as automobiles are provided with opening / closing bodies such as doors, sunroofs, and window glasses. For example, a sliding door that opens and closes in the vehicle front-rear direction is provided on the side of the vehicle body of a wagon car or one-box car so that boarding and unloading and loading / unloading of luggage can be easily performed.

  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 / closing device, a cable connected to a slide door from the vehicle front-rear direction is guided to a drive unit via reversing pulleys arranged at both ends of a guide rail, and a drum or the like provided in the drive unit is driven. A cable type is known in which a cable is passed over a rotating body for rotation, the drum is rotated by a drive source such as an electric motor, and the sliding door is automatically opened and closed while being pulled by the cable. In addition, as a cable-type automatic opening / closing device, the drive unit is arranged inside the slide door, the cables that are spanned around the drum are fixed to both ends of the guide rail, and the drive unit is allowed to self-run along with the slide door. A self-propelled one 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 for guiding a cable from the drum to the open side and the close side are provided on both sides of the drum, and the pair of movable pulleys are movable between the fixed pulley and the drum. And an automatic opening and closing device in which the movable pulley is pressed against the cable 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 conventional automatic opening / closing device, since a pair of fixed pulleys and a pair of movable pulleys are arranged side by side on both sides of the drum, a large amount of space is required to arrange each pulley. Therefore, this automatic opening / closing device has been hindered in miniaturization.

  In addition, since the fixed pulley is arranged side by side in the cable pulling direction with respect to the movable pulley, the cable pulling direction is limited in consideration of the amount of the cable wound around the fixed pulley. The layout of the automatic switchgear and the suitability for multiple models were to be reduced.

  An object of the present invention is to downsize an automatic opening / closing device for a vehicle that includes a tensioner mechanism that applies a predetermined tension to a rope body.

  Another object of the present invention is to increase the degree of freedom in the direction in which the striated body is pulled out, and to improve the layout and adaptability of the vehicle automatic opening / closing device to multiple vehicle types.

  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 disposed on either the vehicle body or the opening / closing body, and is driven to rotate by a drive source. A driving rotator, a cable body spanned by the driving rotator and connected at either end to either the vehicle body or the opening / closing body, and a driving rotator arranged in parallel with the driving rotator. A fixed pulley that is provided on a support shaft, with a closed side portion of the cable body spanned from one side and an open side portion spanned from the other side, and between the driving rotary body and the fixed pulley, respectively. And a pair of movable pulleys that are urged by an elastic body and apply tension to the strip body.

  The automatic opening / closing device for a vehicle according to the present invention is characterized in that the pair of movable pulleys are arranged on both sides of the fixed pulley.

  The automatic opening and closing device for a vehicle according to the present invention is configured such that a pair of fixed pulleys are mounted on the support shaft so as to be relatively rotatable with respect to each other, and the closed side portion of the cable body is stretched over one of the fixed pulleys. The open side portion of the striated body is stretched over.

  In the automatic opening / closing device for a vehicle according to the present invention, the movable pulley is provided so as to be movable toward and away from the driving rotator, and the elastic pulley biases the movable pulley in a direction away from the driving rotator. It is characterized by doing.

  In the automatic opening and closing device for a vehicle according to the present invention, the elastic body is a torsion spring having a pair of action portions for applying an elastic force to both axial sides of the movable pulley.

  The automatic opening and closing device for a vehicle according to the present invention spans an open side portion of the cable body that is spanned from one side to the fixed pulley to the movable pulley on one side with respect to the fixed pulley, and A closed side portion of the cable body that is stretched over a fixed pulley is stretched over the movable pulley on the other side of the fixed pulley, and a lead-out portion of the cable body is provided in a tangential direction of the fixed pulley. Features.

  In the automatic opening / closing device for a vehicle according to the present invention, the driving rotating body is disposed on the vehicle body, and both ends of the cable body are connected to the opening / closing body from the open side and the closed side via a pair of reversing pulleys. It is characterized by that.

  In the automatic opening / closing device for a vehicle according to the present invention, the driving rotary body is disposed on the opening / closing body, and both ends of the cable body are connected to both ends of a guide member fixed to the vehicle body and guiding the opening / closing body. It is characterized by that.

  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 disposed on either the vehicle body or the opening / closing body, and is driven to rotate by a drive source. A driving rotator, a cable body spanned by the driving rotator and connected at either end to either the vehicle body or the opening / closing body, and a driving rotator arranged in parallel with the driving rotator. A fixed pulley with a closed side portion of the cable body spanned from one side and an open side portion spanned from the other side, and between the driving rotary body and the fixed pulley. A pair of movable pulleys provided on both sides of the fixed pulley so as to be movable toward and away from the driving rotator, the driving rotator, the fixed pulley, and the pair of movable pulleys. Each case and A counter fixed pulley side of the pulley, one end engaged with the case side and the other end and having a pair of torsion springs arranged to impart a pressing force to the movable pulley.

  According to the present invention, since the support shaft of the fixed pulley for applying tension to the closed side portion of the cable body and the support shaft of the fixed pulley for applying tension to the open side portion are shared, this vehicle The automatic opening / closing device can be downsized.

  Further, according to the present invention, since the movable pulley is arranged on both sides of the fixed pulley, the vehicle automatic opening / closing device can be further reduced in size.

  Furthermore, according to the present invention, the pair of fixed pulleys are mounted on the support shaft so as to be relatively rotatable with respect to each other, and the open side portion and the close side portion of the cable body are hung on separate fixed pulleys. Even if a fixed pulley is used, the projected area can be reduced to reduce the size of the automatic opening and closing device for the vehicle. Even if it operates, each fixed pulley can be rotated relative to each other to smoothly operate the cable body.

  Furthermore, according to the present invention, each movable pulley is provided so as to be movable in a direction approaching and moving away from the driving rotating body, so that the moving space of the movable pulley is narrowed, and the automatic opening / closing device for a vehicle is miniaturized. Can do.

  Furthermore, according to the present invention, the elastic body that urges each movable pulley is provided with a pair of action portions, and elastic force is applied to both sides in the axial direction of the movable pulley by these action portions. Can be operated smoothly.

  Furthermore, according to the present invention, the open side portion of the cable body that is spanned from one side to the fixed pulley is spanned to the movable pulley on one side with respect to the fixed pulley, and the cord that is spanned from the other side to the fixed pulley. Since the closed side of the strip is stretched over the movable pulley on the other side of the fixed pulley and the strip is pulled out from the tangential direction of the fixed pulley, the amount of winding of the strip over the fixed pulley Can be more. Accordingly, the degree of freedom in the pulling-out direction of the rope pulling portion for pulling out the rope is increased, and thereby the layout of the automatic opening / closing device and the adaptability to each vehicle type can be improved.

  Further, according to the present invention, the fixed pulley for applying tension to the closed side portion of the cable body and the fixed pulley for applying tension to the open side portion can be used in common, and on both sides of the fixed pulley. Since a pair of movable pulleys are arranged, and a pair of torsion springs for applying a pressing force to each movable pulley is arranged on the side thereof, the layout of the components of this automatic opening / closing device for vehicles is improved. Thus, the automatic opening / closing device can be configured compactly.

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

  FIG. 1 is a side view showing a one-box type vehicle, and FIG. 2 is a top view showing a vehicle automatic opening / closing device according to an embodiment of the present invention.

  A vehicle 11 shown in FIG. 1 is a one-box type passenger car, and a side door of a vehicle body 12 is provided with a slide door 13 that is an opening / closing body. The slide door 13 is guided by a guide rail (guide member) 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 one-dot chain line in FIG. It is used by opening it to a desired opening when passengers get on and off and load and unload luggage.

  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. . Further, a curved portion 14a that curves toward the vehicle interior side is provided on the vehicle front side of the guide rail 14, and the roller assembly 15 is guided by the curved portion 14a, so that the slide door 13 is flush with the side surface of the vehicle body 12. It is closed in a state of being drawn inside the vehicle body 12 so as to fit. 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.

  As shown in FIG. 2, 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 longitudinal direction of the vehicle, and a pair of reversing pulleys 23 and 24 provided at both ends of the guide rail 14, respectively. And two cables 25 and 26 as cable bodies connected to the roller assembly 15 (slide door 13) at both ends from the closed side (vehicle front side) and the open side (vehicle rear side). The sliding door 13 is automatically closed by pulling the cable 25 constituting the closed side portion of the cables 25, 26 with the drive unit 22, and the cable 26 constituting the open side portion of the cables 25, 26 is moved with the drive unit 22. The sliding door 13 is automatically opened by pulling.

  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. FIG. 5A is a perspective view showing a cable spanning state in the drive unit shown in FIG. 3, and FIG. 5B is a side view showing a cable spanning state in the drive unit shown in FIG. is there. 6 is a side view of the drive unit shown in FIG. 3, and FIG. 7 is a front view showing the operation of the movable pulley.

  As shown in FIGS. 3 and 4, the drive unit 22 has an electric motor 27 as a drive source and a speed reducer 28 fixed to the electric motor 27, and a so-called brushed DC motor is used as the electric motor 27. When a direct current is supplied from the control device 31, the rotary shaft 27a rotates in the forward and reverse directions. On the other hand, the speed reducer 28 has a gear case 32, and an output shaft 33 is rotatably accommodated in the gear case 32. The output shaft 33 engages with a worm 34 formed on the outer periphery of the rotation shaft 27a. 35 is supported so as to be relatively rotatable. Thereby, the rotation of the rotating shaft 27a is decelerated to a predetermined number of rotations and transmitted to the worm wheel 35.

  An electromagnetic clutch 36 is accommodated in the gear case 32, and the rotation of the worm wheel 35 is transmitted to the output shaft 33 through the electromagnetic clutch 36. The electromagnetic clutch 36 is of a so-called friction type, and has a rotor 37 and an armature 38 that are arranged with their friction surfaces facing each other. The rotor 37 is supported on the output shaft 33 so as to be relatively rotatable and the worm wheel 35. The worm wheel 35 is rotated together with the electric motor 27 when the electric motor 27 is operated. The armature 38 is spline-coupled to the base end portion of the output shaft 33 and is urged in a direction away from the rotor 37 by the leaf spring 41, rotates with the output shaft 33, and axially with respect to the output shaft 33. It is free to move. A clutch yoke 42 is disposed on the back side of the rotor 37, and a clutch coil 43 is accommodated in the clutch yoke 42. When electric power is supplied from the control device 31 to the clutch coil 43, a magnetic attractive force is applied to the clutch yoke 42. The armature 38 is attracted in the direction approaching the rotor 37 by the magnetic attraction force. Therefore, when the clutch coil 43 is energized, the friction surfaces of the rotor 37 and the armature 38 are pressed against each other, and the electromagnetic clutch 36 is in a connected state, and power is transmitted between the worm wheel 35, that is, the electric motor 27 and the output shaft 33. The On the other hand, when the energization to the clutch coil 43 is stopped, the armature 38 is biased in the direction away from the rotor 37 by the leaf spring 41, and the frictional force between the rotor 37 and the armature 38 is reduced. The electromagnetic clutch 36 is cut off and the power transmission path between the worm wheel 35 and the output shaft 33 is cut off.

  A case 51 is fixed to the drive unit 22, and a drum 52 serving as a drive rotator is accommodated in the case 51. The drum 52 is fixed to the tip of the output shaft 33 and is rotatable inside the case 51, and is driven by the electric motor 27 to rotate. A spiral guide groove 52 a is formed on the outer peripheral surface of the drum 52, and the cable 25 guided by the drive unit 22 is stretched over the drum 52 along the guide groove 52 a, and is fixed to the drum 52 at the end thereof. The cable 26 is stretched over the drum 52 along the guide groove 52a in the same direction as the cable 25, and is fixed to the drum 52 at its end. When the drum 52 is driven by the electric motor 27 to rotate forward or reverse, either the open side portion or the closed side portion of the cables 25 and 26 is wound around the drum 52 and the other side is wound around the drum 52. The sliding door 13 is automatically opened and closed while being pulled by the cable 25 or 26.

  The drive unit 22 is provided with a tensioner mechanism 53 in order to apply a predetermined tension to the cables 25 and 26. The tensioner mechanism 53 has a pair of fixed pulleys 54 and 55 parallel to the drum 52, and a pair of movable pulleys 56 and 57 provided between the fixed pulley 54 and the drum 52.

  The case 51 is provided with a single support shaft 61 in parallel with the output shaft 33. As shown in FIG. 4, the fixed pulleys 54 and 55 are rotatable relative to each other on the support shaft 61 and overlap in the axial direction. It is attached to be able to. That is, the fixed pulleys 54 and 55 are arranged in parallel with the drum 52 in the axial direction. As shown in FIG. 5 (a), the closed side portion of the cables 25, 26 (portion drawn from the drum 52 of the cable 25 to the front side of the vehicle 11) is stretched from the front side of the vehicle to one fixed pulley 54. On the other fixed pulley 55, the open side portions of the cables 25, 26 (portions pulled out from the drum 52 of the cable 26 to the vehicle rear side) are spanned from the vehicle rear side. Cables 25 and 26 are stretched in opposite directions.

  The case 51 is provided with a pair of drawer portions 62 and 63 in the tangential direction of the fixed pulleys 54 and 55, and the cable 25 spanned to the fixed pulley 54 is directed from the drawer portion 62 on the vehicle front side toward the reverse pulley 23. The cable 26 pulled out from the case 51 and spanned to the fixed pulley 55 is pulled out from the case 51 from the pull-out portion 63 on the vehicle rear side toward the reversing pulley 24. An outer tube C is attached to each of the drawer portions 62 and 63, and the cables 25 and 26 are inserted into the outer tube C between the drive unit 22 and the reversing pulleys 23 and 24, respectively.

  On the other hand, the movable pulleys 56 and 57 are positioned on both sides of the fixed pulleys 54 and 55 and accommodated in the case 51, and the cable 25 is a vehicle between the fixed pulley 54 and the drum 52 relative to the fixed pulleys 54 and 55. The cable 26 is stretched between a fixed pulley 54 and a drum 52 and a movable pulley 57 on the rear side of the vehicle with respect to the fixed pulleys 54 and 55 between the fixed pulley 54 and the drum 52. As shown in FIGS. 5A and 5B, the movable pulleys 56 and 57 are formed to have substantially the same thickness as the drum 52, and the slidable contact surfaces 56a and 57a over which the cables 25 and 26 are stretched are axially arranged. It is formed wide. The movable pulleys 56 and 57 are rotatably supported by movable shafts 64 and 65, respectively. The movable shafts 64 and 65 are movable along slits 66 and 67 provided in the case 51. Thus, each of the movable pulleys 56 and 57 is movable in a direction toward and away from the drum 52. In addition, a pair of torsion springs 71 and 72 as elastic bodies are mounted on the side of the movable pulleys 56 and 57 in the case 51 opposite to the fixed pulleys 54 and 55, and each of the movable pulleys 56 and 57 is provided with these torsion springs 71 and 72. Therefore, it is biased in a direction away from the drum 52. 3 and 6, the torsion spring 71 has a spring portion 71a supported on a support shaft 68 provided upright on the case 51, and an intermediate portion between a pair of action portions 71b extending from both ends thereof and the spring portion 71a. The engaging portion 71 b is engaged with both ends of the movable shaft 64, and the engaging portion 71 c is engaged with a bracket 73 fixed to the case 51. Similarly, the torsion spring 72 has a spring portion 72a supported on a support shaft 69 erected on the case 51, a pair of action portions 72b extending from both ends thereof, and a locking portion extending from an intermediate portion of the spring portion 72a. 72c, and these action portions 72b are engaged with both ends of the movable shaft 65, and the locking portion 72c is engaged with a bracket 74 fixed to the case 51. Thereby, an elastic force is applied to both sides in the axial direction of the movable pulleys 56 and 57 from the action portions 71b and 72b of the torsion springs 71 and 72, respectively. The movable pulleys 56 and 57 are urged away from the drum 52 by the torsion springs 71 and 72, whereby the cable 25 is pushed by the movable pulley 56 and given a predetermined tension, and the cable 26 is moved to the movable pulley. A predetermined tension is applied by being pushed by 57.

  Next, the operation of the switchgear having such a structure will be described.

  For example, 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 device 31, the electromagnetic clutch 36 is switched to the connected state, and then the electric motor 27 is rotated in the forward direction. 3, the drum 52 rotates clockwise in FIG. 3, the cable 26 is wound around the drum 52, and the slide door 13 moves toward the fully opened position while being pulled by the cable 26. Conversely, when the closing signal of the open / close switch is operated and a command signal for operating the sliding door 13 in the closing direction is input to the control device 31, the electromagnetic clutch 36 is switched to the connected state, and then the electric motor 27 is rotated in the reverse direction. When driven, the drum 52 rotates counterclockwise in FIG. 3, the cable 25 is wound around the drum 52, and the slide door 13 moves toward the fully closed position while being pulled by the cable 25. Further, when the sliding door 13 is manually opened and closed, the electromagnetic clutch 36 is switched to the disconnected state while the electric motor 27 is stopped, thereby reducing the manual opening / closing operation force of the sliding door 13. .

  At this time, one of the cables 25 and 26 wound around the drum 52 is wound up by the rotation of the drum 52 and the other is fed out. As the drum 52 rotates, the drawing positions of the cables 25 and 26 with respect to the drum 52 are displaced in the direction of the output shaft 33, but the sliding contact surfaces 56a and 57a of the movable pulleys 56 and 57 are formed wide. Since the change can be followed, the cables 25 and 26 are prevented from being detached from the movable pulleys 56 and 57.

  On the other hand, when the sliding path 13 is opened or closed automatically or manually and the moving path length of the cables 25 and 26 is changed by the roller assembly 15 passing through the curved portion 14a of the guide rail 14, as shown in FIG. The movable pulleys 56 and 57 move, the tension of the cables 25 and 26 is maintained within a predetermined range, and the cables 25 and 26 are prevented from being slackened. For example, when the cable 25 is slack, the movable pulley 56 on the vehicle front side is moved away from the drum 52 by the spring force of the torsion spring 71, and the slack of the cable 25 is absorbed by the movable pulley 56. On the contrary, when the tension of the closed side portion of the cable 25 becomes too high, the movable pulley 56 moves in the direction approaching the drum 52 against the spring force of the torsion spring 71, and the tension of the cable 25 falls within a predetermined range. Adjusted. Similarly, when the cable 26 is slack, the movable pulley 57 on the vehicle rear side is moved away from the drum 52 by the spring force of the torsion spring 72, and the slack of the cable 26 is absorbed by the movable pulley 57. . On the other hand, when the tension at the open side portion of the cable 26 becomes too high, the movable pulley 57 moves toward the drum 52 against the spring force of the torsion spring 72 and the tension of the cable 26 falls within a predetermined range. Adjusted.

  As described above, since the tensioner mechanism 53 is provided in the opening / closing device 21, a predetermined tension can be applied to the cable 25 on the closed side and the cable 26 on the open side to prevent the cables 25 and 26 from loosening. .

  Further, in this opening / closing device 21, since the pair of fixed pulleys 54, 55 constituting the tensioner mechanism 53 are arranged coaxially with the support shaft 61, the space of the pair of fixed pulleys 54, 55 is shared, This switchgear 21 can be reduced in size.

  Furthermore, in this opening / closing device 21, the movable pulleys 56, 57 are arranged on both sides of the fixed pulleys 54, 55. Therefore, the opening / closing device 21 can be further downsized by providing a compact arrangement around each pulley. it can.

  Further, in this opening / closing device 21, the pair of fixed pulleys 54, 55 are mounted on the support shaft 61 so as to be relatively rotatable with each other, and the cables 25, 26 are hung on the separate fixed pulleys 54, 55. Even if the cables 25 and 26 operate at different speeds due to differences or the like, the fixed pulleys 54 and 55 can rotate relative to each other to smoothly operate the cables 25 and 26, that is, the slide door 13.

  Further, in the opening / closing device 21, since the movable pulleys 56 and 57 are provided so as to be movable toward and away from the drum 52, it is not necessary to provide a space for the movable pulleys 56 and 57 in a direction protruding from the case 51. . Therefore, the opening / closing device 21 can be reduced in size by minimizing the moving space of the movable pulleys 56 and 57.

  Further, in the opening / closing device 21, a pair of action portions 71b and 72b are provided on the torsion springs 71 and 72 for urging the movable pulleys 56 and 57, and the axial directions of the movable pulleys 56 and 57 are provided by these action portions 71b and 72b. Since the elastic force is applied to both sides of the movable pulleys 56 and 57, the movable pulleys 56 and 57 can be smoothly operated without causing the movable pulleys 56 and 57 to be twisted by the elastic force from the torsion springs 71 and 72. .

  8 is a front view showing a modification of the opening / closing device shown in FIG. 3. In the opening / closing device 21 shown in FIG. 3, the drawer portions 62 and 63 are provided in the case 51 so as to be parallel to the vehicle longitudinal direction. However, in the vehicle automatic opening / closing device 81 shown in FIG. 8 (hereinafter referred to as the opening / closing device 81), the drawers 62 are arranged diagonally forward while the arrangement of the fixed pulleys 54, 55, the movable pulleys 56, 57, etc. is not changed. In the case 51, the drawer portion 63 is provided obliquely rearward. Even in this case, the drawer portions 62 and 63 are provided in the tangential direction of the fixed pulleys 54 and 55, and the closed side portions of the cables 25 and 26 that span the fixed pulley 54 from the drawer portion 62 on the vehicle front side are The open side portions of the cables 25 and 26 that are hung on the movable pulley 56 on the front side of the vehicle and on the fixed pulley 55 from the drawer 63 on the rear side of the vehicle are hung on the movable pulley 57 on the rear side of the vehicle. As a result, even if the direction in which the cables 25 and 26 are pulled out is changed upward as compared with the case shown in FIG. 3, the winding angle of the cables 25 and 26 with respect to the fixed pulleys 54 and 55 does not change greatly and is movable. There is no significant effect on the tension applied to the cables 25 and 26 by the pulleys 56 and 57. Therefore, in this switchgear 21, the degree of freedom in the pulling direction of the cables 25 and 26 can be increased, for example, the drawers 62 and 63 are directed obliquely upward as in the switchgear 81 shown in FIG.

  As described above, in the opening / closing devices 21 and 81, the cable 25 that spans the fixed pulley 54 from the front side of the vehicle is spanned to the movable pulley 56 that is on the front side of the vehicle with respect to the fixed pulley 54. Since the cable 26 that is stretched over 55 is stretched over the movable pulley 57 on the vehicle rear side with respect to the fixed pulley 55 and the cables 25 and 26 are pulled out from the tangential direction of the fixed pulleys 54 and 55, The amount of winding around the 26 fixed pulleys 54 and 55 can be increased. Accordingly, the degree of freedom in the pulling-out direction of the pull-out portions 62 and 63 for pulling out the cables 25 and 26 from the case 51 is increased, thereby improving the layout of the switchgears 21 and 81 and the adaptability to each vehicle type. .

  In FIG. 8, members corresponding to the members described above are denoted by the same reference numerals.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the opening / closing body is the 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 and off or a back door provided at the rear end of the vehicle. Other opening / closing bodies may be used.

  In the above-described embodiment, the drive unit 22, that is, the drum 52 is arranged on the vehicle body 12, and both ends of the cables 25 and 26 are connected to the slide door 13. That is, the drum 52 may be disposed inside the slide door 13 and both ends of the cables 25 and 26 may be connected to both ends of the guide rail 14. In this case, the drive unit 22 is a so-called self-propelled type that moves together with the slide door 13.

  Furthermore, in the above embodiment, the electric motor 27 is used as a drive source. However, the present invention is not limited to this, and any device that can rotationally drive the drum 52 may be used.

  Furthermore, in the above-described embodiment, the pair of fixed pulleys 54 and 55 that are mounted on the support shaft 61 so as to be relatively rotatable are provided in the drive unit 22. Both 25 and 26 may be used. Thereby, this opening / closing device 21 can be further reduced in size.

  Further, in the above-described embodiment, the sliding contact surfaces 56a and 57a of the movable pulleys 56 and 57 are formed wide. However, the present invention is not limited to this, and the movable pulleys of the cables 25 and 26 drawn from the drum 52 are used. Other shapes may be used as long as they can be prevented from coming off.

  Furthermore, in the above-described embodiment, the elastic body is the torsion springs 71 and 72 having a pair of action portions. However, the present invention is not limited to this, as long as the movable pulleys 56 and 57 can be urged. Alternatively, an elastic body such as a spring or rubber having another shape may be used.

  Furthermore, in the above-described embodiment, the pair of elastic bodies 71 and 72 is used as the elastic body. However, the present invention is not limited to this, and a single unit having two action portions capable of urging each movable pulley 56 and 57 is used. You may comprise with an elastic body.

  Furthermore, in the said embodiment, although the cables 25 and 26 are used as a rope body, you may make it use not only this but a wire, a belt, etc., for example.

  Furthermore, in the above-described embodiment, a pair of cables 25 and 26 are used. However, the present invention is not limited to this, and an intermediate portion of one cable is wound around the drum 52 and both ends thereof are connected to the slide door 13. It may be.

It is a side view showing a one-box type vehicle. It is a top view which shows the automatic opening / closing apparatus for vehicles which is one embodiment of this invention. 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. FIG. 4A is a perspective view showing a cable spanning state in the drive unit shown in FIG. 3, and FIG. 4B is a side view showing a cable spanning state in the drive unit shown in FIG. FIG. 4 is a side view of the drive unit shown in FIG. 3. It is a front view which shows the action | operation of a movable pulley. It is a front view which shows the modification of the opening / closing apparatus shown in FIG.

Explanation of symbols

11 Vehicle 12 Car body 13 Sliding door (opening / closing body)
14 Guide rail (guide member)
14a curved portion 15 roller assembly 21 automatic opening / closing device for vehicle 22 drive unit 23, 24 reversing pulley 25 cable (strand body, closed side portion)
26 Cable (strip, open side)
27 Electric motor (drive source)
27a Rotating shaft 28 Reducer 31 Control device 32 Gear case 33 Output shaft 34 Worm 35 Worm wheel 36 Electromagnetic clutch 37 Rotor 38 Armature 41 Leaf spring 42 Clutch yoke 43 Clutch coil 51 Case 52 Drum (Driving body for driving)
52a Guide groove 53 Tensioner mechanism 54, 55 Fixed pulley 56, 57 Movable pulley 56a, 57a Sliding surface 61 Support shaft 62, 63 Drawer 64, 65 Movable shaft 66, 67 Slit 68, 69 Support shaft 71, 72 Torsion spring ( Elastic body)
72a Spring portion 72b Action portion 72c Locking portion 73, 74 Bracket 81 Automatic opening / closing device for vehicle

Claims (9)

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 driving rotator disposed on either the vehicle body or the opening / closing body and driven to rotate by a driving source;
A cord body that is stretched over the driving rotary body and has both ends connected to either the vehicle body or the opening and closing body;
A fixed pulley that is provided on a support shaft that is arranged in parallel with the driving rotary body, the closed side portion of the cable body is stretched from one side, and the open side portion is stretched from the other side;
A vehicle having a pair of movable pulleys that are movably provided between the driving rotating body and the fixed pulley and that are urged by an elastic body to apply tension to the cable body. Automatic switchgear.   2. The automatic opening / closing device for a vehicle according to claim 1, wherein the pair of movable pulleys are arranged on both sides of the fixed pulley.   3. The automatic opening and closing device for a vehicle according to claim 1 or 2, wherein a pair of fixed pulleys are mounted on the support shaft so as to be relatively rotatable with each other, and the closed side portion of the cable body is stretched over one of the fixed pulleys. An automatic opening / closing device for a vehicle, wherein an open side portion of the cable body is spanned over the fixed pulley.   The automatic opening and closing device for a vehicle according to any one of claims 1 to 3, wherein the movable pulley is provided so as to be movable in a direction approaching and separating from the driving rotating body, and the driving rotating body is provided by the elastic body. An automatic opening / closing device for a vehicle, wherein the movable pulley is biased in a direction away from the vehicle.   The automatic opening and closing device for a vehicle according to any one of claims 1 to 4, wherein the elastic body is a torsion spring having a pair of action portions that apply elastic force to both sides in the axial direction of the movable pulley. 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 5, wherein an open side portion of the cable body spanned from the one side to the fixed pulley is on one side with respect to the fixed pulley. Hang over the movable pulley, the closed side portion of the strip body that is spanned from the other side to the fixed pulley is spanned over the movable pulley on the other side with respect to the fixed pulley, An automatic opening / closing device for a vehicle, which is provided in a tangential direction of the fixed pulley.   The automatic opening and closing device for a vehicle according to any one of claims 1 to 6, wherein the driving rotating body is disposed on the vehicle body, and both ends of the cable body are opened via a pair of reversing pulleys. An automatic opening and closing device for a vehicle, wherein the opening and closing body is connected from a closed side.   The automatic opening and closing device for a vehicle according to any one of claims 1 to 6, wherein the driving rotating body is disposed on the opening and closing body, and is fixed to the vehicle body at both ends of a guide member that guides the opening and closing body. An automatic opening / closing device for a vehicle, wherein both ends of the cable body are connected. 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 driving rotator disposed on either the vehicle body or the opening / closing body and driven to rotate by a driving source;
A cord body that is stretched over the driving rotary body and has both ends connected to either the vehicle body or the opening and closing body;
A fixed pulley that is provided on a support shaft that is arranged in parallel with the driving rotary body, the closed side portion of the cable body is stretched from one side, and the open side portion is spanned from the other side;
A pair of movable pulleys provided between the driving rotator and the fixed pulley, and movable on both sides of the fixed pulley in a direction approaching and separating from the driving rotator;
A case in which the rotating body for driving, the fixed pulley, and the pair of movable pulleys are housed;
The movable pulley includes a pair of torsion springs on the side opposite to the fixed pulley and having one end engaged with the case and the other end arranged to apply a pressing force to the movable pulley. Automatic vehicle opening and closing device.

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