JP4858307B2 - Door position control device - Google Patents

Description

  The present invention relates to a door position restricting device that restricts the position in the opening direction of a door that is detachably attached to an opening formed in a vehicle body.

  For doors that can be freely opened and closed on the vehicle body, a door checker is installed between the door and the door, and the opening degree of the door and the door holding force to keep it open are adjusted. The holding power is universal and not rainy. For example, if there is an obstacle such as a wall, a pillar, or an adjacent vehicle at a position facing the door, the door opening and door holding force set by the door checker may contact the obstacle. In such a case, the passenger has to regulate the opening degree of the door and get on and off the vehicle, and there is a problem as getting on and off.

Therefore, various devices for controlling the opening angle of the vehicle door have recently been proposed. For example, an obstacle that obstructs the opening of the door or an obstacle that approaches the door is detected by the obstacle detecting means, and the door lock mechanism is activated by the output signal from the obstacle detecting means to automatically open the door. For example, Patent Document 1 proposes a door position regulating device that locks the door.
JP-A-8-128261

  When a motor is used as a driving unit as in Patent Document 1, the driving force (rotation) is generally transmitted to a target object to be moved by a rotation transmission unit such as a gear. Since there is an upper backlash, if it is too narrow, it will become resistance, and if it is too wide, it will be easy to play, and it will be easy to become the person who generates abnormal noise. In particular, when an urging means such as a spring is arranged in the rotation transmitting means and acting in a direction different from the driving force from the driving means, the rotation transmission is performed when the driving force is transmitted from the driving means. Since the means rotates by the amount of backlash, the contact noise between the gears may cause abnormal noise that cannot be ignored. When such a door position restricting device using gears is used for a vehicle door, since the mounting position is close to the occupant, abnormal noise is noticeable, leaving room for improvement. Further, when the mounting position is inside the door, the mounting space is narrow, so it is desirable that the mounting position is as small as possible.

  An object of the present invention is to propose a small door position regulating device while suppressing the occurrence of abnormal noise.

  In order to achieve the above object, the invention according to claim 1 is provided in a device main body in a door position restricting device for restricting a position in an opening direction of a door that is openably / closably attached to an opening formed in a vehicle body. A rotating body (pulley) that is rotatably supported by the first shaft and that winds / feeds the other end of the wire member, one end of which is fixed to the door side, according to the opening and closing of the door, and the first shaft; A fan-shaped gear that transmits the rotation of the rotating body during movement of the door in the opening / closing direction to a toothed wheel train disposed on a second shaft provided in the apparatus main body in parallel with the first shaft; Rotation imparting means for giving rotation behavior in the winding direction of the rotating body, and a clutch gear that is attached to the first shaft and meshes with the final stage gear of the tooth wheel train, and the rotating body rotates in the feeding direction Braking means that sometimes provides frictional resistance to the rotation of the rotating body, and the second shaft And an operating tooth for operating the braking means by transmitting a driving force from the driving means to the second shaft, and an urging means for restricting the rotation of the operating gear. It is characterized by being engaged with an operating gear.

  According to a second aspect of the present invention, in the door position regulating device according to the first aspect of the present invention, there is provided a buffer means for buffering rotation of the sector gear in the winding direction by the rotation imparting means when the driving means is inoperative. Yes.

  According to a third aspect of the present invention, in the door position restricting device according to the second aspect, the buffering means is provided in the sector gear, and is disposed within the moving range of the moving member, the moving member being movable integrally with the gear. When the sector gear rotates in the winding direction by the action of the rotation applying means, it has a buffer member that contacts the moving member and elastically displaces in the moving direction of the moving member.

  According to a fourth aspect of the present invention, in the door position regulating device according to the first, second, or third aspect, the braking means is supported rotatably with respect to the first shaft, and the clutch gear is formed in a part thereof. A cylindrical rotor, a cylindrical casing that is provided integrally with the first shaft and disposed opposite the rotor, is wound around the outer periphery of the rotor and the casing, one end is locked to the casing, and the other end is The torsion coil spring has a torsion coil spring that is detachably connected to the actuating gear. The torsion coil spring is wound by the actuating gear rotating by the driving means and engaging with the other end, and the actuating gear rotates in the opposite direction to the rotation by the driving means And is expanded by engaging with the other end.

  According to a fifth aspect of the present invention, in the door position restricting device according to the fourth aspect, the braking means is disposed inside the rotor and has a cylindrical collar member mounted on the first shaft, and wound around the outer periphery of the collar member. A spiral spring having one end locked to the collar member and the other end locked to the casing, and having a clutch mechanism for intermittently connecting the rotor and the first shaft.

  According to the present invention, the rotating member that winds / feeds the wire member fixed to the door side according to the opening / closing of the door is rotatably supported by the first shaft provided in the apparatus main body, and the opening / closing direction of the door is determined. A fan-shaped gear that transmits the rotation of the rotating body during movement to the toothed wheel train disposed on the second shaft provided in the main body of the apparatus parallel to the first shaft is provided on the first shaft, and is rotated with respect to the fan-shaped gear. Rotation imparting means is given by the rotation imparting means in the winding direction of the body, and there is a clutch gear meshing with the gear of the final stage of the tooth wheel train, and friction resistance to the rotation of the rotating body when the rotating body rotates in the opening direction of the door When the driving means is driven, the braking means for attaching the driving means is mounted on the first shaft, and the operating gear for transmitting the driving force from the driving means to the second shaft to operate the braking means is mounted on the second shaft. The operating gear mounted on the second shaft is driven to rotate and the braking means is connected via the clutch gear. To use. For this reason, braking is given to rotation of a rotary body, sending-out of a wire member is controlled, and a door can be held in an open state.

  In addition, the sector gear is used to rotate in the winding direction by the action of the rotation imparting means. However, since the operating gear is regulated by the biasing means, the sector gear connected thereto is equally regulated. The rotation of the gear and the tooth wheel train meshing with the gear can be prevented, and the generation of abnormal noise can be reduced. Furthermore, since the operating gear is mounted on the second shaft on which the tooth wheel train is mounted, and the braking means is disposed on the first shaft on which the rotating body and the fan-shaped gear are mounted, the apparatus can be downsized. .

  According to the present invention, when the drive means is not in operation, the rotation in the winding direction of the sector gear by the rotation applying means is buffered by the buffer means, so the rotational force of the sector gear is buffered by the buffer means. The rotation of the gear and the toothed wheel train meshing with the gear can be further prevented, and the generation of abnormal noise can be reduced.

  According to the present invention, the cylindrical rotor on which the clutch gear is formed is rotatably supported with respect to the first shaft, and the cylindrical casing disposed to face the rotor is provided integrally with the first shaft. A torsion coil spring having one end locked to the casing and the other end detachably connected to the operating gear on the outer periphery of the rotor and casing, and the operating gear is rotated by the driving means and engaged with the other end As a result, the torsion coil spring is tightened, and the operating gear rotates in the opposite direction to the rotation by the driving means and engages with the other end, so that when the driving means is operated, the rotor and the casing are integrated. Since it rotates and friction braking is given to rotation of a rotary body, it can hold | maintain in the open state of a door.

  According to the present invention, a cylindrical collar member mounted on the first shaft, and a spiral having one end locked to the collar member and the other end locked to the casing inside the rotor constituting the braking means. Since the spring has a clutch mechanism that winds around the outer periphery of the collar member and intermittently connects the rotor and the first shaft, even if the rotor and the casing are integrated by the torsion coil spring, Since the clutch function constituted by the spiral spring and the collar member is formed on the first shaft in accordance with the torque difference between them, the overload from the rotating body and the operating gear side can be reduced while reducing the size of the device. The torque liter against the overload can be configured, and damage to the apparatus can be prevented.

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

  FIG. 1 shows a door opening operation control system provided with a door position restricting device 1 according to the present invention. The door opening operation control system includes a door position restricting device 1 that restricts a position in an opening direction of a door 22 that can be freely opened and closed in an opening 21A formed in a vehicle body 21, a door checker 23, a wire member 24, and a door. A controller 27 of a drive motor 26, which will be described later, of the position regulating device 1, a door opening / closing sensor 28, an obstacle sensor 29, a vehicle side operation unit 30, an outside operation lever 31, a door holding switch 32, an electronic control device, ECU40 etc. which become. The door 22 is rotatably attached to the vehicle body 21 via a door hinge (not shown). The door holding switch includes a switch 32A that is operated from the inside of the vehicle and a switch 32b that is operated from the inside of the vehicle. Reference numeral 32 is used when these switches 32A and 32B are expressed together.

  As shown in FIG. 2, the door checker 23 is inserted into an opening (not shown) provided in the door 22, and includes a hinge part 23A, an arm part (arm) 23B, a sliding member 23C, and a stopper part 23D. . The hinge portion 23 </ b> A protrudes from the opening of the door 22 and is fixed to the vehicle body 21. One end of the arm part 23B is connected to be rotatable about the hinge part 23A, and a stopper part 23D having a diameter sufficiently larger than the arm part 23B is formed integrally with the arm part 23B on the other end side.

  The sliding member 23C is provided with a slider (not shown) that moves relative to the arm portion 23B while being pressed against the peripheral surface of the arm portion 32B by an elastic force, and is fixed to the inside of the door 22 with a bolt or the like. Has been. Then, the arm part 23B is inserted into an opening provided in the central part of the sliding part 23C, and the arm part 23B is moved with respect to the sliding part 23C according to the opening / closing operation of the door 22 as shown by a two-dot chain line in FIG. By relatively moving forward and backward, the slider of the sliding member 23C and the arm portion 23B are configured to slide.

  The sliding range between the slider of the sliding member 23C and the arm portion 23B is configured to be regulated by the sliding portion 23C coming into contact with the stopper portion 23D. That is, the position where the slider of the sliding member 23 </ b> C contacts the stopper 23 </ b> D is the maximum door opening of the door 22.

  A recess 23E for defining the intermediate holding position of the door 22 is provided in the vicinity of the center of the arm portion 23B. The slider of the sliding member 23C presses against the bent surface of the recess 23E, thereby causing a large sliding. Due to this sliding resistance, the operating force (operation torque) required to open and close the door and the holding force to hold the door 21 when the door is moved in the opening and closing direction are set appropriately. ing.

  As shown in FIG. 1, one end (tip portion) of the wire member 24 is connected to the stopper portion 23 </ b> D of the door checker 23. The other end side (base end portion) of the wire member 24 is fixed to a pulley 25 that is a rotating body provided in the door position regulating device 1, and is wound / sent out by the pulley 25 according to opening / closing of the door 22. It is configured to be. That is, the pulley 25 is rotated according to the relative displacement of the arm portion 23 </ b> B that is interlocked with the opening / closing of the door 22, and the wire member 24 is wound / delivered from the pulley 25. Although the detailed configuration will be described later, the pulley 25 is urged in the winding direction of the wire member 24 (that is, the closing direction of the door 22), and the wire member 24 becomes a pulley as the door 22 moves in the closing direction. It is comprised so that it may be wound by 25.

  The vehicle interior side operation unit 30 is attached to an inner panel (vehicle interior side panel) of the door 22, and a door holding switch 32 </ b> A is attached in the vicinity of the vehicle interior side operation unit 30. The vehicle compartment side operation unit 30 is provided with a door opening lever 30A for releasing engagement of a door latch (not shown) and a door lock button 30B for locking and unlocking the door 22. The outside operation lever 31 is attached to an outer panel (outside panel) of the door 22, and a door holding switch 32 </ b> B is attached in the vicinity of the outside operation lever 31. The outside operation lever 30 is a lever for releasing the engagement of the door latch, and also serves as a door handle.

  Each of the door holding switches 32A and 32B is configured as a push button, and is configured to be switched on when the button is pressed once and switched off when the button is pressed twice within one second. The reason for pressing the button twice when the switch is turned off is to prevent the switch from being turned off against the intention of the door operator due to an erroneous operation or the like. Alternatively, the switch may be turned on and off. The door holding switch 32B may also be used as a switch of another system such as a keyless operation system.

  The ON signals of the door holding switches 32A and 32B are input to the ECU 40. The door holding switches 32A and 32B are provided with LEDs (light emitting diodes) 32C and 32D, respectively, and the LEDs 32C and 32D are turned on when the opening of the door 32 is regulated as described later. Yes. That is, here, the lighting of the LED allows the door operator to visually recognize whether or not the opening of the door 22 is being regulated by the lighting of the LED, but the lighting of this LED is omitted. Also good. Instead of the LED, other visual recognition means or auditory recognition means such as a buzzer may be used.

  The door open / close sensor 38 is a sensor that detects the open / closed state of the door 22, and hereinafter, the door open / close sensor 38 is turned on when the door 22 is open. When the door opening / closing sensor 38 is on, an on signal is input to the ECU 40.

  The obstacle sensor 29 is provided at the lower part of the door 22 on the rear side of the vehicle, and detects the approach of an obstacle that obstructs the opening operation of the door 22. When the approach of the obstacle is detected, An ON signal is input to the ECU 40. The drive motor 26 is activated when the obstacle sensor 29 is turned on, and is deactivated when the obstacle sensor 29 is turned off. The rotation of the pulley 25 of the door position restriction device 1 is restricted by the operation / non-operation of the drive motor 26.

  Here, the functional configuration of the ECU 40 will be described. As shown in FIG. 3, the ECU 40 is input with respective ON signals from a door opening / closing sensor 28, an obstacle sensor 29, and door holding switches 32A, 32B. In FIG. 3, the door holding switches 32A and 32B are illustrated as one switch and the LEDs 32C and 32D of the door holding switches 32A and 32B are illustrated as one to simplify the expression.

  The ECU 40 transmits a drive signal for driving the drive motor 26 to the drive motor 26 when the door open / close sensor 28 is on (door open) and the obstacle sensor 29 and / or the door holding switch is on. Is configured to do.

  Next, the structure of the door position control apparatus 1 will be described. As shown in FIGS. 4 and 5, in the door position regulating device 1, a support shaft 3 serving as a first shaft and a rotating shaft 4 serving as a second shaft are parallel to each other in a case 2 serving as a device body. As shown in FIG. In the case 2, the pulley 25, the drive motor 26, the fan-shaped gear 5, the toothed wheel train 6, the braking means 7 that gives friction resistance to the rotation of the pulley 25 when the pulley 25 rotates in the delivery direction, and the fan-shaped gear 5 are provided. On the other hand, a gear spring 10 serving as a rotation imparting means for imparting a rotation habit in the winding direction of the pulley 25, an operating gear 9 for transmitting the rotation of the drive motor 26 to the sector gear 5, and for the gear when the drive motor 26 is not operated. A buffering means 8 for buffering the rotation of the sector gear 5 in the winding direction by the spring 10 and a torsion coil spring 19 serving as a biasing means for restricting the rotation of the operating gear 9 are provided.

  The support shaft 3 is fixed to the side surfaces 2 </ b> A and 2 </ b> B of the case 2. On the support shaft 3, as shown in FIGS. 4, 5, and 6, a pulley 25, a sector gear 5, a buffering means 8, and a braking means 7 are mounted from the side surface 2B toward the side surface 2A. The pulley 25 is rotatably supported on the outer peripheral surface of the cylindrical holder 12 that is fixed to the side surface 2B. One end of the support shaft 3 penetrates the inside of the holder 12 and is supported rotatably.

  The sector gear 5 is engaged with the engaging portion 12A of the holder 12 so as not to rotate on the support shaft 3, and is rotatably supported on the outer periphery of the boss portion 13A of the cylindrical casing 13 inserted through the support shaft 3. And is provided so as to be integrally rotatable with the pulley 25. A circumferential wall 2 </ b> C that is concentric with the support shaft 3 is formed in the case 2 located above the pulley 25. As shown in FIG. 7, one end of the circumferential wall 2 </ b> C is locked to the pulley 25 and the other end is locked to the case 2 side, so that the pulley 25 can be turned in the winding direction. A pulley spring 11 is attached in an annular shape. Inside the circumferential wall 2 </ b> C, one end is locked to the sector gear 5 and the other end is locked to the case 2, and the gear spring 10 is annularly arranged. The gear spring 10 and the pulley spring 11 are accumulated when the sector gear 5 and the pulley 25 rotate in the feeding direction, and when the rotational force in the feeding direction is lost, the sector gear 5 and the pulley 25 are wound in the winding direction. And function to rotate.

  As shown in FIGS. 6 and 8, the buffer means 8 is provided in the sector gear 5 and is disposed within a moving range of the moving member, the stopper member 14, and the stop member 14 that can move integrally with the gear. When the sector gear 5 is rotated in the winding direction by the action of the gear spring 10, the buffer member 15 includes a buffer protrusion 15 </ b> A that contacts the stop member 14 and elastically displaces in the moving direction of the stop member 14. And have. The buffer member 15 is formed of an elastic member such as rubber or resin, and is attached to the outer peripheral surface of the boss portion 13A of the casing 13, and the buffer protrusion 22A is formed when the stopper member 14 rotates in the winding direction. It is configured to abut against the stopper member 14 and absorb the impact.

  As shown in FIGS. 6 and 9, the braking means 7 is rotatably supported with respect to the support shaft 3 and has a cylindrical rotor 17 in which a clutch gear 16 is formed in a part thereof, and is disposed opposite to the rotor 17. And a torsion coil spring 18 wound around the outer periphery of the casing 13. One end of the torsion coil spring 18 is locked to the casing 13, and the other end 18 </ b> B is disposed so as to be detachable from the engagement step portion 9 </ b> A formed on the operating gear 9 as shown in FIG. 10. When the operating gear 9 is rotated by the drive motor, the torsion coil spring 18 is wound by the other end 18B engaging with the engaging step portion 9A and moving in the winding closing direction, and the operating gear 9 is driven by the drive motor 26. The tightening is released by rotating in the direction opposite to the rotation and moving in the direction of expanding by engaging with the other end 18B.

  As shown in FIG. 6, the braking means 7 includes a clutch mechanism 40 therein. The clutch mechanism 40 includes a cylindrical collar member 41 disposed inside the rotor 17 and a spiral spring 42 wound around the outer periphery of the collar member 41. As shown in FIG. 11, the collar member 41 is attached to the support shaft 3 inside the rotor 17, and a spring hooking portion 41A is formed in a part thereof. A spring hook 13B is formed in the casing 13 as shown in FIG. As shown in FIG. 13, the spiral spring 42 has notches 42C and 4D formed at one end 42A and the other end 42B. The notch 42C is a spring hook 13B of the casing 13 and the notch 42D is a collar member. By being engaged with the spring hooking portion 41 </ b> A of 41, it is arranged in the braking means 7.

  As shown in FIGS. 5 and 14, the rotation shaft 4 is rotatably supported on the side surfaces 2 </ b> A and 2 </ b> B. A toothed wheel train 6 and an operating gear 9 are mounted on the rotating shaft 4 so as to be rotatable together with the rotating shaft 4. The toothed wheel train 6 is composed of a small-diameter gear 6A that meshes with the sector gear 5 and a large-diameter gear 6B that meshes with the clutch gear 15 and constitutes the final gear of the toothed wheel train 6. And the small-diameter gear 6 </ b> A mesh with each other, the large-diameter gear 6 </ b> B rotates, and the rotation is decelerated and transmitted to the clutch gear 16.

  The operating gear 9 is provided so as to be rotatable integrally with the support shaft 4 and, as shown in FIGS. 5 and 10, a tooth portion 9B that meshes with a pinion gear 26B attached to the output shaft 26A of the drive motor 26. And the circular arc surface 9C which is smaller in diameter than the tooth portion 9A and does not mesh with the pinion gear 26B is formed. The above-mentioned engagement step portion 9A is formed on the circular arc surface 9C.

  As shown in FIGS. 10 and 14, the torsion coil spring 19 has one end 19a locked to the middle plate 2D of the case 2 and the other end 19b close to the outer periphery of the operating gear 9, so that the operating gear 9 rotates. It works to limit the movement in the direction and return to the initial position.

  According to such a door position regulating device 1, when the door 22 is moved in the opening direction in a non-operating state where the drive motor 26 is not driven, the wire member 24 is pulled out and the pulley 25 rotates freely. As shown in FIG. 5, when the pulley 25 rotates in the feed-out direction, the sector gear 5 rotates integrally, and the rotation of the sector gear 5 is transmitted to the small diameter gear 6A. As a result, the rotating shaft 4 rotates, and the rotation is transmitted from the large-diameter gear 6B to the clutch gear 16 to rotate the rotor 5. However, the torsion coil spring 18 does not wind around the outer periphery of the rotor 17 and the casing 13, so Power does not act on the pulley 22 and the door 22 can be moved.

  When the door 22 is moved in the closing direction when the drive motor 26 is not driven, the sector gear 5 and the pulley 25 are rotationally driven in the winding direction by the action of the gear spring 10 and the pulley spring 11, and this operation As a result, the wire member 24 is wound around the pulley 25. For this reason, the slack of the wire member 24 at the time of winding can be prevented. Further, when the sector gear 5 is rotationally driven in the winding direction by the action of the gear spring 10, conventionally, there has been a concern that contact noise of the sector gear 5 is generated.

  However, in this embodiment, as shown in FIG. 10, since the movement of the operating gear 9 in the rotational direction is restricted by the torsion screw coil spring 19, as shown in FIG. The rotation of the sector gears 5 connected via 6 is equally restricted, the rotation of the sector gears 5 and the toothed wheel train 6 can be prevented, and the generation of abnormal noise can be reduced. Further, since the pulley 25, the sector gear 5, the buffering means 8, and the braking means 7 are mounted on the support shaft 3 and arranged coaxially, the apparatus can be reduced in size. Further, since the buffer member 15 including the buffer protrusion 15A that is elastically displaced in the moving direction of the stop member 14 integral with the sector gear 5 is provided, the sector gear 5 is wound by the stop member 14 and the buffer protrusion 15A. Since the rotation in the take-off direction is buffered, the contact sound with the sector gear 5 can be reduced.

  In this embodiment, inside the rotor 17 constituting the braking means 7, a cylindrical collar portion 41 material mounted on the support shaft 3, one end is locked to the collar member 42, and the other end is locked to the casing 13. Since the spiral spring 42 wound around the outer periphery of the collar member 1 has a clutch mechanism for intermittently connecting the rotor 15 and the rotary shaft 3, the rotor 17 and the casing 13 are integrated by the torsion coil spring 18 and rotated. However, since the spiral spring 42 and the collar member 41 slide according to the torque difference between the rotor 17 and the support shaft 3 integral with the casing 13, the overload from the pulley 25 and the like can be reduced while reducing the size of the device. A torque liter against an overload from the operating gear 9 side can be configured, and damage to the apparatus can be prevented.

  Next, the operation modes of the ECU 40 and the drive motor 26 will be described with reference to FIG. 15. At the time T0, only the door opening / closing sensor 8 is in an on state, and at this time, the drive motor 26 is in an inoperative state (off). Since the pulley 25 maintains the rotation free state, the movement of the door 22 in the opening direction is not restricted as described above.

  When the door operator presses one of the door holding switches 32A and 32B at time T1, the door holding switch is turned on, and an on signal is input to the ECU 40. At this time, the door open / close sensor signal is turned on and the door holding switch 32 is turned on, and the ECU 40 transmits the drive signal to the drive motor 26 to operate the drive motor 26. Then, the rotation of the drive motor 26 is transmitted from the pinion gear 26B to the operating gear 9. Then, the operating gear 9 rotates in the feeding direction, and the other end 18B of the torsion coil spring 18 moves in the winding direction as shown in FIG. 9, so that the rotor 17 and the casing 13 are integrated by the winding of the torsion coil spring 18. At this time, the support shaft 3 is fixed to the case 2 by the engagement of the holder 12 and the casing 13, so that the braking force by the braking means 7 is transmitted to the pulley through the toothed wheel train 6 and the sector gear 5, Braking is applied to the rotation of the pulley 25.

  When braking is applied to the rotation of the pulley 25 and the movement of the door 22 in the opening direction is sufficiently restricted, the opening operation control of the door 22 is on (that is, the opening of the door 22 is being regulated). Each LED 32C, 32D is lit to indicate that it is.

  When the drive motor 26 is controlled as described above, the rotation of the pulley 25 is restricted by the drive motor 26 and the delivery of the wire member 24 from the pulley 25 is restricted, and the arm portion 23B of the door checker 23 is moved to the door. The movement in the opening direction of the door 22 is restricted without being relatively displaced in the opening direction of the door 22.

  Next, at time T2, the door operator turns off the door holding switch signal by pressing one of the buttons of the door holding switches 32A and 32B twice within one second. When the door holding switch signal is turned off, the ECU 40 transmits a stop signal 3 for the drive motor 26 to the controller 27. At this time, the restriction on the opening of the door 22 is released, and the lighting of the LEDs 32C and 32D is also stopped.

  Thereafter, at time T3, the door holding switch signal is turned on again. The ECU 40 transmits a signal to the controller 27 to operate the drive motor 26. When the opening of the door is sufficiently restricted, the LEDs 32C and 32D are turned on.

  At time T4, the door 22 is completely closed and the door opening / closing sensor is turned off. The ECU 40 transmits a signal to the controller 27 so as to stop energization of the drive motor 26 after a predetermined time (1 to 2 seconds) from the time when the door opening / closing sensor signal is turned off.

  Next, the opening amount (sliding amount) until the door position restricting device 1 functions and the door 22 stops will be described. The opening amount (sliding amount) is the amount until the opening speed becomes zero when the regulating force (braking force) of the door position regulating device 1 acts on the door 22 and the braking force after the door position regulating device 1 operates. It is the amount that opens before (braking force) starts to work.

  That is, the amount of slip when the opening speed of the door 22 becomes zero is obtained by Equation 1, and the opening degree of the door 22 that is opened before the drive motor 25 is operated is obtained by Equation 2.

(1) M _b : Brake moment [Nm]
(2) M _f : Input moment [Nm]
(Moment loaded in the opening direction due to people, wind, and inclination)
(3) I: Moment of inertia around the hinge axis [kg · m ^ 2]
(4) θ _i : Opening amount until stop [rad] = Rotation angle from start of function operation to stop position (5) t: Time from brake function operation to start of braking (time to complete actuator operation)
Using these mathematical expressions, the operation timing of the drive motor 26 when the input in the opening direction is taken into consideration can be obtained by Equations 3 and 4.

(6) θ _{i + α} : Opening angle + door angle in front of α pulse [rad]
(7) dθ _{i + α} / dt: Opening angle ₊ Door opening angular velocity before α pulse [rad / s]
(8) d ² θ _{i + α} / dt ² : Opening angle + door opening angular acceleration before α pulse [rad / s ^ 2]
The (slip amount) of the door 22 is obtained from such a mathematical expression, it is determined whether or not this value exceeds a threshold value stored in advance in the ECU 40, and if it exceeds, the drive motor 26 may be operated.

  When the operation timing of the drive motor 26 is controlled without considering the input in the opening direction, Equation 5 is used.

(9) θ _{i + α} : Opening amount + α Door angle in front of α pulse [rad]
(10) dθ _{i + α} / dt: Opening angle ₊ door opening angular velocity in front of α pulse [rad / s]
The (slip amount) of the door 22 is obtained from such a mathematical expression, it is determined whether or not this value exceeds a threshold value stored in advance in the ECU 40, and if it exceeds, the drive motor 26 may be operated.

  If the calculation processing time in the ECU 40 is not negligible in the equations 4 and 5, the door opening speed and the calculation processing time are calculated and provided in the ECU 40 before the α pulse of (8) and (10). What is necessary is just to determine the presence or absence of a threshold excess.

It is a schematic block diagram of the principal part of the door opening operation control system provided with the door position control apparatus which concerns on this invention. It is an expanded sectional view of the attachment part of a vehicle body, a door, and a door checker. It is an electric circuit diagram concerning the control system of a door opening operation control system. It is a perspective view which shows the internal structure of the door position control apparatus shown in FIG. It is sectional drawing which shows the structure of the principal part of the door position control apparatus shown in FIG. It is sectional drawing of the line of FIG. 4A-A which shows the structure of the member with which the 1st axis | shaft was mounted | worn. It is a top view near the 1st axis for explaining the wearing state of a rotation grant member. It is a top view near the 1st axis for explaining the composition of a buffer means. It is an expansion perspective view which shows the structure of a braking means. It is a top view for demonstrating the relationship between the structure of a structure of a braking means, and an operating gearwheel. It is an expansion perspective view which shows the internal structure of the rotor which comprises a braking means and a clutch mechanism. It is an expansion perspective view which shows the internal structure of the casing which comprises a braking means and a clutch mechanism. It is an expansion perspective view which shows the structure of the spiral spring which comprises a clutch mechanism. It is sectional drawing of the line of FIG. 4B-B which shows the structure of the member with which the 2nd axis | shaft was mounted | worn. It is an action | operation chart of each switch of a door opening operation control system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door position control apparatus 2 Apparatus main body 3 1st axis | shaft 4 2nd axis | shaft 5 Fan-shaped gear 6 Gear chain 6B Final stage gear 7 Braking means 8 Buffer means 9 Actuation gear 10 Rotation provision means 13 Casing 14 Moving member 15 Buffer Member 16 clutch gear 17 rotor 18 torsion coil spring 18B other end 19 biasing means 21 vehicle body 21A opening 22 door 24 wire member 25 rotating body 26, drive means 40 clutch mechanism 41 color member 42 spiral spring

Claims (5)

In a door position restricting device for restricting a position in an opening direction of a door that is detachably attached to an opening formed in a vehicle body,
A rotating body that is rotatably supported by a first shaft provided in the apparatus main body and winds up / sends the other end of the wire member, one end of which is fixed to the door side, according to the opening and closing of the door;
A toothed wheel train disposed on a second shaft provided on the apparatus body in parallel with the first shaft for rotating the rotating body when the door is moved in the opening / closing direction. Fan-shaped gears that transmit to
A rotation imparting means for imparting a rotation habit in the winding direction of the rotating body to the sector gear; and a clutch gear that is attached to the first shaft and meshes with a gear at the final stage of the tooth wheel train, Braking means for providing a frictional resistance to the rotation of the rotating body during rotation of the rotating body in the delivery direction;
An operating gear mounted on the second shaft and transmitting the driving force from the driving means to the second shaft to operate the braking means;
Biasing means for regulating the rotation of the operating gear;
The door position restricting device, wherein the sector gear is engaged with the operating gear when the device is operated. The door position restricting device according to claim 1,
A door position restricting device comprising buffer means for buffering rotation of the sector gear in the winding direction by the rotation imparting means when the drive means is not in operation. The door position restricting device according to claim 2,
The buffer means is provided in the sector gear, and is disposed within a movement range of the movement member that can move integrally with the gear, and the fan gear is wound in the winding direction by the action of the rotation imparting means. And a buffer member that contacts the moving member and elastically displaces in the moving direction of the moving member when rotating. The door position restricting device according to claim 1, 2, or 3,
The braking means is rotatably supported with respect to the first shaft, and is provided integrally with the first shaft, a cylindrical rotor having the clutch gear formed in a part thereof, and the rotor A cylindrical casing disposed opposite to the rotor, and a torsion coil spring wound around the outer periphery of the rotor and the casing, one end locked to the casing, and the other end detachably connected to the operating gear. The torsion coil spring is wound by the operating gear rotated by the driving means and engaged with the other end, and the operating gear is rotated in the opposite direction to the rotation by the driving means and engaged with the other end. The door position restricting device is characterized by being expanded. The door position restricting device according to claim 4,
The braking means includes a cylindrical collar member disposed inside the rotor and mounted on the first shaft, wound around the outer periphery of the collar member, one end locked to the collar member, and the other end A door position restricting device comprising: a spiral spring locked to the casing; and a clutch mechanism for intermittently connecting the rotor and the first shaft.

Images