JP2002168045A - Automatic sliding door controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic sliding door controller capable of preventing the acceleration of a sliding door by dead load. SOLUTION: The sliding door is made to directly invert a driving motor between a fully shut position and a fully opened position (S2) after power to a gearing type electromagnetic clutch is disconnected, and the electromagnetic clutch is disengaged to release a restraining state of the sliding door. Watch and wait until a certain time elapses (S3), and the direction of movement of the sliding door is detected after the clutch is disengaged. Based on that, decision is made whether or not the sliding door is operated in the opening direction (S5), and when it is moved in the opening direction, the electromagnetic clutch is connected and, at the same time, duty ratio to the driving motor is made 25% to drive the sliding door in the direction of the opening operation (S6).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic sliding door control device for controlling a sliding door.

[0002]

2. Description of the Related Art Conventionally, a vehicle is provided with a slide door for opening and closing a door opening, and is equipped with an automatic slide door control device for electrically controlling the opening and closing of the slide door.

In this automatic sliding door control device, a clutch is provided between a motor speed reduction mechanism and a door drive belt (or a wire) so that the door can be opened and closed manually. Is being done.

If the clutch is disengaged when the vehicle is stopped on a slope, the door's own weight acts in a direction downhill, and the door may start moving downhill (open / close). An application has been filed in which the clutch is turned on and connected again in order to make the movement in the downward direction of the slope gentle.
Further, in this application, there is also disclosed an apparatus provided with an inclination angle sensor for detecting a slope to determine whether clutch connection is necessary.

When an electromagnetic clutch is used as a clutch, even if the clutch is turned off, the weight of the door is applied to the teeth of the clutch on a sloping road, so that the clutch is not disengaged and the clutch cannot be disengaged. There is.

In order to prevent the clutch from being disengaged, there is an application in which after the motor and the clutch are turned off, the motor is reversed for a predetermined time to disengage the clutch (Japanese Patent Application Laid-Open No. 10-280806). Reference).

[0007]

However, in such an automatic sliding door control device, if the motor is simply reversed, the reversing direction may be opposite to the downhill direction of the sloping road. The clutch could not be disengaged and the clutch could not be released.

When an inclination angle sensor is used, the number of components increases and tuning is required.

Further, when the clutch is turned on again and the brake by the motor and the speed reduction mechanism is applied in order to make the movement of the door in the downhill direction gentle, if the slope of the slope is gentle (small), The clutch stops and the door stops, and cannot be moved by the slope of the slope or manually.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. The present invention has been made to ensure that the clutch is disengaged, to abolish the use of the inclination angle sensor, and to perform manual operation when the door is stopped. It is an object of the present invention to provide an automatic sliding door control device that can be opened and closed.

[0011]

In order to solve the above-mentioned problems, in an automatic sliding door control device according to the present invention, a driving force from a motor that opens and closes a sliding door is transmitted via a meshing electromagnetic clutch. In the transmitted automatic sliding door control device, when the motor is stopped, the energization of the electromagnetic clutch is stopped and the sliding door is stopped between the fully closed position and the fully opened position, the motor is stopped and the electromagnetic A clutch disengaging means for rotating the motor forward and reverse for a short time to disengage the electromagnetic clutch after stopping the energization of the clutch; When the slide door is displaced after the clutch is disengaged, the clutch is brought into the connected state, and the slide door is moved in the movement direction. And a, a poor ability driving means for driving a poor ability the motor to move.

That is, when the slide door is stopped between the fully closed position and the fully open position, the motor is stopped, the energization of the electromagnetic clutch is stopped, and then the motor is rotated forward and reverse for a short time. This ensures that the clutch is disengaged.

After the clutch is disengaged, the moving direction of the slide door is detected. Thus, a slope or the like is detected without using the inclination angle sensor.

At this time, when the slide door moves after the clutch is disconnected, the clutch is brought into the connected state,
The motor is driven with a small force to move the slide door in the moving direction. Then, the slide door is driven at a very low speed, that is, in a state in which the brake is applied, by a small torque from the motor.

When the vehicle stops on a flat road, the slide door does not move by its own weight, and the movement is not detected. For this reason, the slide door stops at that position while the clutch is in the disconnected state.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a vehicle 1 equipped with an automatic sliding door control device according to the present embodiment. The vehicle 1 of the vehicle 1 is provided with an opening 2 for getting on and off and a step 3 on the side of the vehicle body. In addition, a slide door 4 for opening and closing the entry / exit opening 2 is provided. Further, a weather strip fixed to the vehicle body is provided around the entrance / exit opening 2, and when the slide door 4 is closed, the weather strip comes into contact with the slide door 4, and rainwater or the like enters the vehicle interior. Preventing intrusion.

The upper end of the slide door 4 on the front side of the vehicle 1 is supported by an upper roller 11 that moves along the upper edge of the entry / exit opening 2, and the lower end extends along the side surface 12 of the step 3. Supported by the lower roller 13 that moves. A central portion on the rear side of the vehicle is supported by a rear roller 14 that moves in the vehicle front-rear direction, and is configured to be able to move from the fully open position where the entrance / exit opening 2 is fully opened to the fully closed position where the entrance 2 is fully closed. Have been. A closure unit 15 is provided in the slide door 4, and a receiving terminal 16 for receiving power supply to the closure unit 15 is provided at a front edge of the slide door 4. In addition, a supply terminal 18 that forms a pair with the reception terminal 16 is provided on a pillar 17 that forms an edge of the entry / exit opening 2 on the vehicle front side, and the slide door 4 is located at a position immediately before the fully closed position. From the moved position, it is connected to the receiving terminal 16 so that power can be supplied to the closure unit 15.
The sliding door 4 has an upper portion of the lower roller 13 fixed to a pulling member 19 extending from the side surface 12 of the step 3, so that the sliding door 4 is pulled by the pulling member 19 and moved in the vehicle longitudinal direction. Is configured.

The inside of the step 3 where the traction member 19 extends is, as shown by a broken line in FIG. 2, a moving mechanism 2 for moving the slide door 4 via the traction member 19.
1 is provided. The moving mechanism 21 includes a support member 22 that supports an end of the traction member 19,
, A first and a second guide pulleys 24 and 25 for movably supporting the belt 23 along the side surface 12 of the step 3, and a corner portion 26 of the step 3. And a toothed drive pulley 27 for moving the belt 23.

The driving pulley 27 is axially connected to the final reduction gear 31.
Are meshed with the drive pulley side transmission gear 32. The moving mechanism 21 is provided with a driving motor 33, which transmits the driving force to a motor-side transmission gear 36 via a worm gear reducer 34 and an intermediate gear 35. The motor-side transmission gear 36 and the drive pulley-side transmission gear 32 are provided above and below a meshing electromagnetic clutch 37.
The motor-side transmission gear 36 and the drive pulley-side transmission gear 32
To intermittently. In the vicinity of the toothed drive pulley 27, an installation location of a slide door rotation sensor 53 described later is set so that the slide door position, the moving speed and the moving direction can be detected even when the slide door 4 is manually opened and closed. It is provided on the drive pulley 27 side of the electromagnetic clutch 37. The slide door rotation sensor 53 uses a known contact type two-phase encoder, but may be an optical sensor capable of detecting normal rotation and reverse rotation (moving direction).

As a result, when the electromagnetic clutch 37 is controlled to be turned on, the drive motor 33 and the drive pulley 27 are joined to each other. A cutting state in which the driving motor 33 and the driving pulley 27 are separated from each other is formed, and the slide door 4 can be manually opened and closed. The drive motor 33 and the electromagnetic clutch 37 are connected to an automatic sliding door unit 38 installed in the vehicle 1 as shown in FIG.

This automatic sliding door unit 38
A microcomputer M (microcomputer) having a built-in ROM and RAM is connected to a battery 42 for driving the drive motor 33 via a circuit breaker 41, and an electric power supply 43 for driving the microcomputer. It is connected to the. An ignition switch 44 is connected to the automatic sliding door unit 38, and a shift P switch 45 which is turned on when the select lever is selected to the P range is provided between the ignition switch 44 and the ignition switch 44.
And a stop lamp switch 46 that is turned on when the foot brake is operated. further,
A main switch 47 is connected to the automatic sliding door unit 38, and the sliding door 4 can be driven by operating the main switch 47.

The automatic sliding door unit 3
8 includes a speed sensor 51 for detecting a vehicle speed and a buzzer 5.
2 and the slide door rotation sensor 53 are connected. The slide door rotation sensor 5
3 comprises an encoder, the encoder comprising a first
A pulse output 54 and a second pulse output 55 are provided. The pulses output from the two pulse outputs 54 and 55 are configured such that the period is shortened as the moving speed of the slide door 4 increases, and a pulse having a phase corresponding to the moving direction of the slide door 4 is output. It is configured to The sliding door rotation sensor 53 detects the speed and position of the sliding door 4 from the rotation speed of the encoder and outputs a signal when the sliding door 4 reaches the fully open or fully closed position. Inversion detection output 56
And GND as a ground for matching the voltage with the microcomputer M
A line 57 is provided and connected to the automatic sliding door unit 38.

The automatic sliding door unit 38 has a parking switch 61 that is turned on when a parking brake is operated and a slide door open switch 62 that is operated when the sliding door 4 is opened.
And a slide door close switch 63 operated when the slide door 4 is closed, and a slide door switch 64 provided as a fully closed position detection switch that is turned off when the slide door 4 is fully closed. First and second supply outputs 65 and 66 for supplying power to the closure unit 15 are connected to the supply terminal 18. The first and second supply outputs 65 and 66 are connected to an operating current detector 67 for measuring the passing current and transmitting the measured current to the microcomputer M.

Reference numeral 18 denotes the supply terminal, which is connected to the reception terminal 16 when the slide door 4 is in the fully closed position from a position immediately before the fully closed position.

The control unit 71 of the closure unit 15 which receives power supply from the supply terminal 18 includes a latch release actuator 72 for driving a latch on the slide door 4 side locked by a striker of the vehicle body to release the locked state. A half switch 73 that operates by detecting a half-lock state (half latch) immediately before the latch is locked by the striker, a neutral switch 74 that operates by detecting a neutral state of the latch, A full lock switch 75 that operates by detecting a locked state is connected. The closure unit 15 is connected to a slide door closure motor 76 that pulls the slide door 4 in the half-lock state to the full lock state.

In the embodiment having the above-described configuration, the operation of stopping the slide door 4 between the fully closed position and the fully open position will be described with reference to a flowchart shown in FIG.

That is, while the slide door open / close switches 62 and 63 are operated to automatically open or close,
Alternatively, after it is confirmed that the slide door 4 has been manually opened or closed by a predetermined amount based on pulses from the first and second pulse outputs 54 and 55 of the slide door rotation sensor 53, the slide door 4 is automatically opened or closed. While the automatic closing operation is performed and the sliding door 4 is automatically opened or automatically closed,
By controlling the duty ratio of the duty output to be output to the drive motor 33, the slide door 4 is driven at a constant speed.

In this state, that is, in the state where the slide door 4 is between the fully closed position and the fully open position, it is determined whether or not the condition for stopping the slide door 4 and disconnecting the electromagnetic clutch 37 is satisfied (S1). ). This judgment condition is that if the valve does not fully open or close after a predetermined time, if the lid that closes the fuel filler is opened and the switch that operates in conjunction with the lid open is turned on, If the vehicle speed is detected by the sensor 51 and the main switch 47 is turned off during the opening / closing operation of the sliding door, the door is inverted upon detection of the jamming, and the door is again inverted in the opposite direction to the opening / closing operation of the sliding door. Is repeated. In this determination, when the condition for disconnecting the electromagnetic clutch 37 is satisfied, the duty output is stopped to stop the drive motor 33, and the meshing type electromagnetic clutch 37 is turned off.
3 is rotated forward and backward for a short time (for a moment) (S2) to release the restrained state of the slide door 4 and drive motor 3
The electromagnetic clutch 37 is reliably disconnected by reversing the direction of 3. Here, in order to surely disconnect the electromagnetic clutch 37 after the electromagnetic clutch 37 is turned off, the drive motor 33 is normally inverted because the engagement type electromagnetic clutch 37 has the slide door 4 side (the drive pulley side). Transmission gear 32
Side) and the teeth on the drive motor 33 side (motor-side transmission gear 36 side) of the meshing electromagnetic clutch 37 are simply turned off by turning off the meshing electromagnetic clutch 37, the sliding due to the slope of the hill. This also takes into account the fact that a state in which the door 4 cannot be disengaged while receiving the load is received. Since it is not possible to determine whether or not the slope of the slope is lowered in the operation direction (opening direction or closing direction) of the slide door 4 before the drive motor 33 is stopped and the electromagnetic clutch 37 is turned off, the drive motor 33 is not driven. Is positively inverted for a short time. By reversing the drive motor 33, the teeth of the electromagnetic clutch 37 on the drive motor 33 side are reversed normally, and the teeth on the drive motor 33 side are either forward (reverse or reverse) and slide due to the slope of the slope. It moves in the same direction as the direction in which the load on the door 4 is being received, and at the moment when the load on the slide door 4 is no longer received, it is pulled out of the engagement by the force of the return spring of the electromagnetic clutch 37, and the teeth on the slide door 4 side From the electromagnetic clutch 37
Is disconnected.

Then, it waits until a certain time has passed (S
3) During that time, the first of the sliding door rotation sensors 53
And 2 from the input pulses from the second pulse outputs 54 and 55
By detecting the phase relationship between the phase signals, the moving direction of the slide door 4 after the clutch is disconnected is detected.
Then, the weak output timer is started (S4).
That is, the drive motor 33 is stopped, the drive motor 33 after the electromagnetic clutch 37 is turned off is reversely operated for a short time, and after a lapse of a predetermined time (S3), the weak output timer is started (S4). At this time, when the vehicle 1 is parked on a sloping road, the slide door 4 may move in either the opening direction or the closing direction due to its own weight, and therefore, whether the slide door 4 in the free state is operated in the opening direction. (S5), and if it has moved in the opening direction, the electromagnetic clutch 37 is energized to be in the connected state, the duty ratio of the duty output is set to 25%, and the drive motor 33 is turned on. The drive is performed in a direction in which the slide door 4 is opened, that is, the slide door 4 moves in the same direction as the movement direction after the clutch is disengaged (downward on the slope).
The drive motor 33 is driven with a small force (S6).

Thus, the driving force from the drive motor 33 can be transmitted through the worm gear reducer 34 and the like, and the slide door 4 can be driven at a very low speed by the small torque from the drive motor 33. . Therefore, as compared with the conventional art in which the electromagnetic clutch 37 is simply disengaged when the slide door 4 is stopped, even when the vehicle is suddenly stopped on a sloping road, the acceleration of the sliding door 4 due to its own weight applied by the inclination of the sloping road is performed. Can be prevented.
Therefore, the structure for absorbing the impact from the slide door 4 can be simplified.

Next, it is determined whether or not a preset weak power output time has elapsed since the start of the weak power output timer (S4) (S7). While branching to step S5 and continuing the above-described operation, if the set weak force output time has elapsed, the duty output is stopped, the drive motor 33 is stopped, and the electromagnetic clutch 37 is turned off.
After that, the drive motor 33 is rotated forward and reverse for a short time (S7), and each process is terminated.

Note that the set slight force output time is a very low speed by the output of the duty ratio 25%,
Is set to the time required to reach the fully open position from the fully closed position.

As a result, the opening operation is continued for the set minute force output time, and the slide door 4 can reach the fully open position. When the slide door 4 reaches the fully open position at a slow speed, the slide door 4 can be held by the fully open checker provided at the fully open position. Thereby, it is possible to reliably prevent the slide door 4 from being inadvertently moved after the stop.

On the other hand, if it is determined in step S5 that the sliding door 4 in the free state has not moved in the opening direction, the sliding door rotation sensor 53 is operated for a predetermined time after the clutch is disconnected. First and second pulse output 5
By detecting the phase relationship between the two signals from the input pulses from the input pulses 4 and 55, it is determined whether or not the slide door 4 has been operated in the closing direction after the clutch is disconnected (S9). As a result, if it has moved in the closing direction, the electromagnetic clutch 3
7 is energized to establish a connection state, the duty ratio of the duty output is set to 25%, and the drive motor 33 is driven in a direction in which the slide door 4 is closed.
That is, the drive motor 33 is driven with a small force so that the slide door 4 moves in the same direction as the movement direction after the clutch is disengaged (downward of the slope) (S10).

As described above, by transmitting the driving force from the drive motor 33 through the worm gear reducer 34 and the like, the slide door 4 is driven at a very low speed by the weak torque from the drive motor 33 as described above. can do. Therefore, similarly to the above, even when the vehicle is suddenly stopped on a slope, it is added by the slope of the slope. Sliding door 4
Acceleration due to its own weight can be prevented, and the structure for absorbing the impact from the slide door 4 when opening and closing can be simplified.

Then, as described above, it is determined whether a preset weak power output time has elapsed since the start of the weak power output timer (S4) (S7), and the set weak power output time has not elapsed. In this case, the step S5
If the set power output time has elapsed while the above operation is continued, the duty output is stopped, the drive motor 33 is stopped, and the electromagnetic clutch 37 is turned off. The motor 33 is rotated forward and reverse for a short time (S8), and each process is terminated.

Further, as described above, the set slight force output time is set to a time at which the slide door 4 can reach the fully open position from the fully closed position at a very low speed by the output of the duty ratio 25%.

Thus, the closing operation is continued for the set minute force output time, and the slide door 4 can reach the fully closed position. In addition, since the slide door 4 reaches the fully closed position at a slow speed, the slide door 4 can be held at the fully closed position by the closure, thereby preventing accidental movement of the slide door 4 after stopping. be able to.

If it is determined in step S9 that the sliding door 4 has not moved in the closing direction after the clutch has been disengaged, the sliding door 4 is moved in either the opening direction or the closing direction. Since the vehicle is stopped without stopping, it can be determined that the vehicle is stopped on a flat road. That is, when the vehicle is stopped on a flat road, the slide door 4 does not move by its own weight, so that the electromagnetic clutch 37 is turned off (disconnected) (S11), and the process proceeds to step S7.
Thus, since the electromagnetic clutch 37 is disconnected, the slide door 4 can be manually opened and closed after the slide door is stopped, and is manually moved to the fully open position or the fully closed position. The door is locked and held by the movement to the fully closed position by the holding or the closure, so that careless movement of the sliding door 4 after stopping can be prevented.

[0040]

As described above, in the automatic sliding door control device of the present invention, when the sliding door is stopped, the motor is rotated forward and backward for a short time after the energization of the electromagnetic clutch is stopped. Even on a slope, the clutch can be reliably disengaged.

Further, by detecting the moving direction of the slide door after the clutch is disengaged, the slope can be detected without using an inclination angle sensor, and the inclination angle sensor can be eliminated.

At this time, when the slide door is displaced after the clutch is disengaged, the clutch is connected and the motor is driven with a small force to move the slide door in the moving direction. Thus, even if the slide door moves downhill, the motor can be driven by a small force to apply a brake and move at a slow speed.

Further, it is possible to solve the problem that even when the vehicle is on a gentle slope, the sliding door is moved by a small force of the motor, the sliding door is not moved while being half-open, and the sliding door cannot be moved manually.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a view shown by an arrow A in FIG. 1;

FIG. 3 is a block diagram according to the embodiment;

FIG. 4 is a flowchart showing an operation of the embodiment.

[Explanation of symbols]

 Reference Signs List 4 slide door 33 drive motor 37 mesh type electromagnetic clutch 38 auto slide door unit M microcomputer

Continued on the front page F term (reference) 2E052 AA09 BA02 CA06 DA00 DA01 DA04 DA08 DB00 DB01 DB04 DB08 EA16 EB01 EC01 GA03 GA06 GA09 GA10 GB06 GB12 GB13 GB15 GD03 GD05 GD09 HA01 KA02 KA13 KA15 KA16 KA27 LA06 LA09

Claims (1)

[Claims] 1. An automatic sliding door control device in which a driving force from a motor for opening and closing a slide door is transmitted via a mesh type electromagnetic clutch, wherein the motor is stopped, and the energization of the electromagnetic clutch is stopped. When stopping the slide door between the fully closed position and the fully open position, after stopping the motor and stopping the energization of the electromagnetic clutch, the motor is rotated forward and reverse for a short time to disconnect the electromagnetic clutch. Disengagement means, after-disengagement movement direction detection means for detecting the movement direction of the slide door after clutch disengagement, and when the slide door after clutch disengagement moves, the clutch is brought into the connected state. And a micro-force driving means for micro-driving the motor so that the slide door moves in the moving direction. Over door sliding door control device.