JP2006022512A - Vehicular automatic opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular automatic opening/closing device which can positively detect pinching of foreign matter by simple control. <P>SOLUTION: When the operator operates an opening/closing switch 22, a slide door 12 provided for a vehicle 11 is driven by an electric motor of the vehicular automatic opening/closing device, and carries out automatic opening/closing operation. The vehicular automatic opening/closing device has a pinching detecting function imparted thereto, and when pinching is detected, the slide door 12 is reversely operated. If the opening/closing switch 22 is switched to termination operation when the slide door 12 under automatic closing operation reaches a position Ps that is immediately before a total closure position, the slide door 12 automatically carries out opening operation to an effective opening position Pv and then stops its operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

  2. Description of the Related Art Conventionally, a vehicular automatic opening / closing device that automatically opens and closes opening / closing members such as a door, a window glass, a sunroof, a back door, and a trunk lid provided in a vehicle such as an automobile is known. For example, Patent Document 1 discloses an automatic opening / closing device that automatically opens and closes a sliding door provided on a side portion of a vehicle.

  Such an automatic opening / closing device has an electric motor as its drive source, and the power of the electric motor is transmitted to the slide door via a power transmission element such as a cable. A control device is connected to the electric motor. When an open / close switch provided in a driver's seat, a door, or a portable terminal is operated, the operation of the electric motor is controlled according to the operation. Thus, an operator such as a driver can automatically open and close the slide door by operating the opening / closing switch. In addition, the sliding door can be stopped at a midway position between the fully open position and the fully closed position by stopping the open / close switch during the automatic opening / closing operation.

On the other hand, such an automatic opening / closing device is provided with a safety mechanism for preventing a person or a luggage from being caught by a sliding door that automatically opens and closes. In the conventional automatic opening and closing device, a rotation sensor that outputs a pulse signal proportional to the rotation speed of the electric motor is provided, and the pinching is detected when the period of the pulse signal extends beyond the pinching determination value. In addition, there is a type in which a current sensor for detecting a current value flowing through the electric motor is provided, and the jamming is detected when the current value becomes equal to or greater than the jamming determination value. When the pinching is detected, the sliding door is stopped or reversed so as to avoid the pinching.
Japanese Patent No. 3494274

  In such an automatic opening / closing device, there is a case where the tensioner for maintaining the tension of the power transmission element is bent immediately after the electric motor is started, and the period of the pulse signal is increased beyond the sandwiching determination value. In addition, a starting current larger than the pinching determination value may flow in the electric motor at the time of starting, and pinching may be erroneously detected due to these factors.

  On the other hand, in order to prevent erroneous detection, if the pinching detection itself based on the pulse period and current value immediately after the start of the electric motor is not performed, it occurs when the sliding door that stops at the position immediately before full closing is closed. It becomes impossible to detect pinching.

  Therefore, in addition to the determination value for determining pinching in order to perform control to determine whether the expansion of the pulse signal or the increase in the current value is caused by motor start or due to pinching, the motor It is necessary to provide a judgment value for determining fluctuations that occur at startup, or to provide other pinching detection sensors that are not affected by the startup of the motor, and the control system of this vehicle automatic opening / closing device is complicated. It was a thing.

  An object of the present invention is to provide an automatic opening and closing device for a vehicle that can reliably detect pinching with simple control.

  An automatic opening and closing device for a vehicle according to the present invention is an automatic opening and closing device for a vehicle that automatically opens and closes an opening and closing member provided in the vehicle, and includes an opening and closing switch operated by an operator, and a drive for opening and closing the opening and closing member. And a control means for controlling the operation of the driving means in response to the operation of the opening / closing switch, and when the opening / closing member has reached the position immediately before full closing during the automatic closing operation of the opening / closing member. When the opening / closing switch is stopped, the opening / closing member is automatically opened to the effective opening position.

  The automatic opening and closing device for a vehicle according to the present invention is characterized in that the opening and closing member that automatically opens is stopped at the effective opening position.

  According to the present invention, when the opening / closing switch is stopped when the opening / closing member reaches the position immediately before full closing, the opening / closing member is automatically opened to the effective opening position and stopped halfway at the position immediately before full closing. Therefore, even if the pinching cannot be detected immediately after the electric motor is started, the pinching can be reliably detected by simple control.

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

  FIG. 1 is a side view showing a vehicle provided with a vehicle automatic opening / closing device according to an embodiment of the present invention, and FIG. 2 is an enlarged front view showing a mounting portion of a slide door shown in FIG.

  The vehicle 11 shown in FIG. 1 is provided with a slide door 12 as an opening / closing member, and an opening 13 a formed in the side portion of the vehicle body 13 is closed by the slide door 12. The slide door 12 is guided by a guide rail 14 fixed to the side surface of the vehicle body 13, and can be opened and closed between a fully open position indicated by a solid line and a fully closed position indicated by a one-dot chain line in the figure, and is provided in the vehicle interior. When getting on and off a second seat or a third seat (not shown) or loading / unloading luggage, the seat is opened to the fully open position.

  As shown in FIG. 2, the slide door 12 has a roller assembly 16, and the roller assembly 16 is guided by a guide rail 14 so that the slide door 12 can move in the front-rear direction of the vehicle 11, that is, can be opened and closed. 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 slide door 12 is flush with the side surface of the vehicle body 13 by the roller assembly 16 being guided by the curved portion 14a. It is drawn into the inside of the vehicle body 13 so as to be closed.

  Although not shown, the roller assembly 16 is also provided in the upper and lower portions (upper portion and lower portion) of the front end portion of the slide door 12 in addition to the portion (center portion) shown in the figure, and the vehicle body 13 corresponding to these. Guide rails corresponding to the upper and lower portions are also provided at the upper and lower portions of the opening 13a, and the slide door 12 is supported by the vehicle body 13 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). When the opening / closing switch 22 provided on the slide door 12 is operated by an operator such as an occupant, the slide door is provided. 12 is automatically opened and closed by an opening / closing device 21.

  The opening / closing device 21 includes an actuator unit 23 fixed to the vehicle body 13 adjacent to a substantially central portion of the guide rail 14 in the vehicle longitudinal direction, and two cables 24a connected to the roller assembly 16 from the vehicle rear side and the front side, respectively. , 24b, and these cables 24a, 24b are guided to the actuator unit 23 via reversing pulleys 25a, 25b provided at the vehicle rear side and front side ends of the guide rail 14. The sliding operation of the sliding door 12 is performed by pulling either one of the cables 24 a and 24 b by the actuator unit 23.

  FIG. 3 is an explanatory diagram showing a control system of the vehicle automatic opening / closing apparatus shown in FIG. 2, and the actuator unit 23 is provided with an electric motor 26 as drive means. A so-called brushed DC motor is used as the electric motor 26, and the rotating shaft 27 rotates forward and backward depending on the direction of a DC current supplied between power terminals (not shown).

  A drive gear 31 is fixed to the rotating shaft 27 of the electric motor 26, and the rotation of the drive gear 31 is transmitted to the driven gear 34 via the large-diameter spur gear 32 and the small-diameter spur gear 33. An output shaft 35 is fixed to the driven gear 34, and a drum 36 is fixed to the output shaft 35. Thereby, the rotation of the rotating shaft 27 is decelerated to a predetermined number of rotations and transmitted to the drum 36.

  Cables 24a and 24b guided to the actuator unit 23 are wound around the drum 36 a plurality of times. When the drum 36 rotates, either one of the cables 24a and 24b is wound to open and close the slide door 12. Further, tensioners 37a and 37b are provided between the drum 36 and the two reversing pulleys 25a and 25b, respectively, and slack of the cables 24a and 24b and the roller generated immediately after the drum 36 is rotationally driven by the electric motor 26. Changes in the circumferential length of the cables 24a and 24b that occur when the assembly 16 passes through the curved portion 14a of the guide rail 14 are absorbed by these tensioners 37a and 37b. As a result, the tension of the cables 24a and 24b is always maintained within a certain range.

  A multipolar magnetized magnet 41 magnetized to 10 poles is fixed to the rotating shaft 27 of the electric motor 26, and two multipolar magnetized magnets 41 have two phase differences of 90 degrees near each other. Hall ICs 42a and 42b are provided. Each of these Hall ICs 42a and 42b can output a pulse signal each time the multi-pole magnetized magnet 41 rotates and the magnetic field changes. When the rotating shaft 27 makes one rotation, the Hall ICs 42a and 42b are phase-shifted. Are output for 10 periods of pulse signals with 90 degrees shifted. That is, these Hall ICs 42a and 42b output pulse signals proportional to the rotational speed of the electric motor 26. The Hall IC is a sensor that converts a magnetic field change into a voltage.

  The actuator unit 23 is connected to a control device 43 serving as a control means having a function as a so-called microcomputer having a microprocessor (CPU), a ROM, a RAM, and the like (not shown). Control is performed by the control device 43.

  An open / close switch 22 is connected to the control device 43, and when the open / close switch 22 is operated by an operator such as a passenger, an operation command signal is input from the open / close switch 22 to the control device 43.

  Further, the above-described Hall ICs 42a and 42b are connected to the control device 43, and the rotational speed of the electric motor 26, that is, the moving speed of the slide door 12 is detected based on the period of the pulse signal input from the Hall ICs 42a and 42b. Be able to. Further, the control device 43 can detect the rotation direction of the electric motor 26, that is, the moving direction of the sliding door 12 based on the appearance timing of these pulse signals. The open / closed position of the slide door 12 can be detected by integrating or counting the pulse signals input from the Hall ICs 42a and 42b starting from the closed position.

  Then, the control device 43 calculates the open / close position and open / close speed of the slide door 12 and the operation command signal from the open / close switch 22 in accordance with a control program stored in the memory. A direct current from a power supply is supplied to the electric motor 26 to perform its operation control. That is, the control device 43 controls the operation of the electric motor 26 according to the operation of the opening / closing switch 22.

  With this structure, for example, when the opening / closing switch 22 is opened, an opening operation command signal for operating the slide door 12 in the opening direction is input to the control device 43, and the drum 36 is rotated counterclockwise in FIG. The sliding door 12 is automatically opened toward the fully opened position while being pulled by the cable 24a. On the contrary, when the opening / closing switch 22 is closed, a closing operation command signal for operating the sliding door 12 in the closing direction is input to the control device 43, the electric motor 26 reverses and the sliding door 12 is pulled by the cable 24b. Automatically closes toward the fully closed position. At this time, the moving speed of the slide door 12 is controlled to be a target speed set in advance for each moving section of the slide door 12. As described above, when the operator operates the open / close switch 22, the slide door 12 is driven to open and close by the electric motor 26 and automatically opens and closes. Further, when the opening / closing switch 22 is stopped during the automatic opening operation or the automatic closing operation, the slide door 12 can be stopped at an intermediate position between the fully open position and the fully closed position.

  The opening / closing device 21 is provided with a pinching prevention function in order to prevent pinching by the slide door 12 and improve the safety of the vehicle 11.

  In order to detect pinching, a current sensor 44 is provided between the control device 43 and the electric motor 26, and a current value detected by the current sensor 44 is stored in a predetermined memory stored in the memory of the control device 43. When the pinch determination current value is exceeded, the pinch is detected by the control device 43. The controller 43 also detects pinching when the period of the pulse signal input from each Hall IC 42a, 42b is equal to or greater than a predetermined pinching determination period stored in advance in the memory. When the pinching is detected, the control device 43 reverses the sliding door 12, that is, reverses the moving direction of the sliding door 12 from the closing direction to the opening direction, and quickly releases the pinched obstacle from the pinching. Note that the slide door 12 that is reversed by detecting the pinching is stopped at a position advanced in the opening direction by a predetermined distance after the reversing operation, but may be moved to a fully opened position.

  4 (a) to 4 (c) are explanatory views showing the operation of the slide door when the open / close switch is stopped when the slide door reaches the position immediately before full closing, and FIG. 5 shows FIG. It is a flowchart figure which shows the control procedure for controlling an action | operation.

  In the switchgear 21, the tensioners 37a and 37b may bend immediately after the electric motor 26 is started, and the period of the pulse signal input from the Hall ICs 42a and 42b may fluctuate. If the determination cycle is exceeded, pinching may not be detected accurately. In addition, since a starting current flows through the electric motor 26 immediately after starting, if the starting current exceeds a pinching determination current value, pinching may not be detected accurately. Therefore, the opening / closing device 21 does not detect pinching immediately after the electric motor 26 is started.

  On the other hand, in the opening / closing device 21, the slide door 12 that automatically closes from the fully open position or midway position as shown in FIG. 4A is positioned immediately before the fully closed position as shown in FIG. 4B. In other words, when the open / close switch 22 is stopped when the position Ps immediately before full closing is reached, the slide door 12 is not stopped at the position Ps immediately before full closing, but is set in advance as shown in FIG. The automatic opening operation is performed up to the opening position Pv and then stopped.

  In this case, as shown in FIG. 4B, the position Ps immediately before the fully closed is set within a range within the determination distance L1 immediately before the fully closed from the fully closed position, whereby the slide door 12 is fully closed with respect to the fully closed position. When approaching within the immediately preceding determination distance L1, it is determined that the current position is at the position Ps immediately before full closure.

  On the other hand, as shown in FIG. 4C, the effective opening position Pv is set at a position separated from the fully closed position by an effective distance L2 (for example, about 20 cm). When the slide door 12 is automatically closed toward the fully closed position starting from here, the effective opening position Pv is bent before the slide door 12 reaches the fully closed position. This position is set to such an extent that the starting current flowing through the motor 26 converges and pinching detection becomes effective.

  In the case shown in the figure, the determination distance L1 immediately before full closure and the effective distance L2 are set to the same value, but the effective opening position Pv is set closer to the full opening position than the range of the position Ps immediately before full closure. May be.

  Below, based on FIG. 5, the control procedure when the open / close switch 22 is stopped when the slide door 12 reaches the position Ps immediately before full closing will be described.

  First, when the open / close switch 22 is closed in step S1 when the slide door 12 is in the fully open position or in the middle position between the fully open position and the fully closed position, the electric motor 26 is activated and the slide door is started in step S2. 12 starts the automatic closing operation toward the fully closed position. When the slide door 12 starts the automatic closing operation, it is determined whether or not the open / close switch 22 is stopped in step S3. If it is determined that the stop operation is not performed, the slide door 12 is fully closed in step S4. The automatic closing operation is continued until it is determined that the position has been reached. When it is determined in step S4 that the slide door 12 has reached the fully closed position, the electric motor 26 is stopped in step S5, and the slide door 12 stops in the fully closed position.

  On the other hand, if it is determined in step S3 that the opening / closing switch 22 has been stopped, it is determined in step S6 whether or not the slide door 12 has reached the position Ps immediately before full closing. If it is determined in step S6 that the slide door 12 has not reached the position Ps immediately before full closing, that is, if it is determined that the slide door 12 is in the middle position between the effective opening position Pv and the fully open position, step S5 is performed. Then, the electric motor 26 is stopped and the slide door 12 stops at a midway position. That is, when the open / close switch 22 is stopped when the slide door 12 is on the open side from the position Ps immediately before full closure, the slide door 12 stops at the position where the stop operation is performed.

  On the other hand, if it is determined in step S6 that the slide door 12 has reached the position Ps immediately before full closure, the slide door 12 is automatically opened in step S7. When the sliding door 12 starts the automatic opening operation, it is determined in step S8 whether or not the sliding door 12 has reached the effective opening position Pv. If it is determined that the sliding door 12 has reached the effective opening position Pv, the electric motor 26 is determined in step S5. Is stopped and the sliding door 12 stops at the effective opening position Pv. That is, when the opening / closing switch 22 is stopped while the slide door 12 has reached the position Ps immediately before full closure, the slide door 12 stops after being automatically opened to the effective opening position Pv.

  Thus, in this opening / closing apparatus 21, even if the opening / closing switch 22 is stopped when the sliding door 12 reaches the position Ps immediately before full closing, the sliding door 12 does not stop at the position Ps immediately before full closing, but is effectively opened. The automatic opening operation until the position Pv is stopped. That is, since the slide door 12 does not stop at the position Ps immediately before the fully closed position that is on the closing side with respect to the effective opening position Pv, when the slide door 12 stopped at the midway position is closed, the slide door 12 is always fully closed. Before the closing position is reached, the bending of the tensioners 37a and 37b and the starting current flowing in the electric motor 26 immediately after starting converge. Therefore, when the slide door 12 reaches the fully closed position, the pinch detection is in an effective state, so that even if the pinch detection cannot be performed immediately after the electric motor 26 is started, a new sensor or a complicated It is possible to reliably detect pinching by simple control without performing control.

  FIG. 6 is a flowchart showing a control procedure for closing a slide door that stops halfway at the effective opening position. Hereinafter, a control procedure for closing the slide door 12 stopped halfway at the effective opening position Pv will be described.

  When the open / close switch 22 is closed in step S1 with the slide door 12 stopped halfway at the effective opening position Pv, a buzzer sounds as an alarm sound in step S2, and then in step S3, the buzzer buzzes. The automatic closing operation is started. Therefore, when closing the sliding door 12 that stops halfway at the effective opening position Pv, a buzzer is sounded before the sliding door 12 starts to operate, thereby alerting to pinching and safety of the opening / closing device 21. Will improve.

  When the sliding door 12 starts the automatic closing operation, the automatic closing operation is continued until it is determined in step S4 that the opening / closing switch 22 has been stopped or until it is determined in step S5 that the sliding door 12 has reached the fully closed position. Is done. At this time, the moving speed of the slide door 12 may be operated at a lower speed than normal so as to increase the safety against pinching.

  When it is determined in step S4 that the open / close switch 22 has been stopped, or when it is determined in step S5 that the slide door 12 has reached the fully closed position, the electric motor 26, that is, the slide door 12 is moved in step S6. Stopped.

  Note that the buzzer may continue to sound while the slide door 12 performs the automatic closing operation.

  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 member is the sliding door 12 that opens and closes in a sliding manner. Or it is good also as other opening-and-closing members, such as window glass.

  In the above embodiment, the open / close switch 22 is provided on the slide door 12. However, the present invention is not limited to this. For example, the open / close switch 22 is provided on a portable terminal carried by an operator such as a driver or a driver's seat of a vehicle. May be.

  Furthermore, in the above embodiment, the electric motor 26 is used as the driving means. However, the driving means is not limited to this, and driving means other than the electric motor such as hydraulic equipment may be used. Moreover, even if it is an electric motor, not only with a brush but you may use other types of electric motors, such as a brushless motor.

1 is a side view showing a vehicle provided with an automatic opening / closing device for a vehicle according to an embodiment of the present invention. It is a front view which expands and shows the attachment part of the slide door shown in FIG. It is explanatory drawing which shows the control system of the vehicle automatic opening / closing apparatus shown in FIG. (A)-(c) is explanatory drawing which shows the action | operation of a slide door when an opening-and-closing switch is stop-operated, when the slide door reached the position just before a full closure. It is a flowchart figure which shows the control procedure for controlling the action | operation shown in FIG. It is a flowchart figure which shows the control procedure at the time of closing the sliding door stopped on the way at an effective opening position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Vehicle 12 Slide door 13 Car body 13a Opening 14 Guide rail 14a Bending part 16 Roller assembly 21 Automatic vehicle opening / closing device 22 Open / close switch 23 Actuator unit 24a, 24b Cable 25a, 25b Reverse pulley 26 Electric motor 27 Rotating shaft 31 Drive gear 32 Large Diameter spur gear 33 Small diameter spur gear 34 Driven gear 35 Output shaft 36 Drum 37a, 37b Tensioner 41 Multipolar magnetized magnets 42a, 42b Hall IC
43 Control Device 44 Current Sensor Ps Fully Closed Position Pv Effective Opening Position L1 Fully Closed Determination Distance L2 Effective Distance

Claims (2)

An automatic opening and closing device for a vehicle that automatically opens and closes an opening and closing member provided in a vehicle,
An open / close switch operated by an operator;
Drive means for opening and closing the opening and closing member;
Control means for controlling the operation of the drive means according to the operation of the open / close switch,
During the automatic closing operation of the opening and closing member,
An automatic opening / closing device for a vehicle, wherein when the opening / closing switch is stopped while the opening / closing member reaches a position immediately before full closing, the opening / closing member is automatically opened to an effective opening position. 2. The automatic opening / closing device for a vehicle according to claim 1, wherein the opening / closing member that automatically opens is stopped at the effective opening position.

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