JP2002194949A - Drive control device for automatic sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive control device for an automatic sliding door which can smoothly execute operation of a sliding door, and at the same time, prevent the looseness of a wire. SOLUTION: When the operation of the sliding door is started, output from a drive motor is increased with the lapse of time (S3) by gradually increasing a duty ratio of the output to the drive motor, the looseness of a drive wire caused by the energized sliding door is prevented, and the operation is smoothed. And, when an operation speed of the sliding door is more than a pre-determined stipulated value (S4), the target speed to become a control target is set lower than usual (S5), the brakes are applied to the sliding door which is accelerated by the bead weight of the door generated by a slope. Also, when the change of the operation speed of the sliding door is changed much more than the pre-determined value (S6), a gain of an operation expression to calculate the target speed is set lower than usual so as to reduce the output of the drive motor, in order to stabilize the operation, and prevent the looseness of the drive wire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive control apparatus for an automatic sliding door which operates by pulling a sliding door with a wire.

[0002]

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

[0003] As this drive control device, there is known a drive control device which operates by pulling a slide door with a wire. The wire is wound around a drive pulley rotated by a motor, and guide pulleys are provided on the front and rear sides of the door opening or on the door opening side (front) and rear of the vehicle body side panel behind the door opening. , Are provided between the guide pulleys and the drive pulley. Further, tension pulleys are provided between the driving pulley and the front (front) guide pulley and between the driving pulley and the rear (rear) guide pulley to prevent the wires from being loosened. Also,
A clutch that transmits power from a motor to the wire,
A mesh type electromagnetic clutch without play or half clutch is used. In this control device, control is performed such that the opening / closing speed of the slide door becomes a predetermined target speed.

[0004]

However, in such a conventional drive control apparatus for an automatic sliding door, when the motor and the electromagnetic clutch are started to be driven, the motor is rapidly moved from a stopped state to a target speed. In order to increase the speed, the operation speed suddenly increases, the movement of the sliding door gains momentum, and when the target speed is reached, the speed drops rapidly, and the control that the brake is suddenly applied to the movement of the sliding door works. I will. As a result, a sudden increase in the tractive force and a sudden decrease in the tractive force are repeated, and the slide door is suddenly pulled and jumped, rapidly decelerated and stopped,
In addition, the operation of jumping and stopping causes the wire to be rapidly pulled and then loosened repeatedly, thereby applying a discontinuous force to the wire and disturbing the behavior of the sliding door.

In addition, the wire is rapidly pulled on the side where the wire is pulled by the drive pulley, and the wire is pulled between the tension pulley and the drive pulley on the side opposite to the side where the wire is pulled by the drive pulley. The force pulls down the tension pulley, causing a delay in the movement that facilitates the passage of the wire, and the wire may momentarily loosen. The occurrence of the slack adversely affects the operation of the wire and the movement of the slide door.

Further, when the sliding door is operated downhill on a slope, the door's own weight in the downhill direction is applied (fall speed), and the speed is increased. If the sliding door cannot be driven in time, the wire becomes slack. There was a risk of movement protruding from the rail.

Also, not only at the start of driving of the sliding door but also during driving (after the motor is operated), when the sliding door is operated downhill on the slope as described above, the door's own weight in the downhill direction is used. And the speed of the sliding door becomes faster than the target speed. In order to control the speed to the target speed, the speed is reduced. However, the speed is greatly reduced due to the increase in the speed due to the weight of the door, and thereafter, when the speed is increased to the target speed, the speed is greatly increased due to the weight of the door, and the speed greatly varies.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and provides an automatic sliding door drive control device that can smoothly operate a sliding door and prevent a wire from being loosened. It is intended to do so.

[0009]

According to the present invention, there is provided an automatic sliding door drive control device for transmitting a driving force from a motor to a wire via a mesh type electromagnetic clutch. An automatic sliding door drive control device that controls the motor so that the sliding door is pulled in the opening and closing direction by the wire and the moving speed of the sliding door becomes a predetermined target speed.
Start-time output adjusting means for increasing the output from the motor over time within a certain time at the start of sliding door operation,
When the moving speed of the slide door after the motor is operated is faster than a predetermined value, a target speed lowering unit that sets the target speed to be low, and a change in the moving speed of the slide door after the motor is operated is: Output decreasing means for decreasing the output of the motor when the output is greater than a predetermined value.

That is, when the operation of the slide door is started, the output from the motor that drives the slide door increases with time, that is, gradually increases. As a result, it is possible to suppress the sudden increase in the traction force of the slide door immediately after the operation and the repetition of the rapid decrease in the traction force after the increase in the traction force, suppress the momentum of the slide door, and apply the action of the discontinuous force to the wire. In addition, it is possible to prevent the behavior of the sliding door from being disturbed and to prevent the wire from becoming loose.

If the moving speed of the sliding door at the start of the motor operation is faster than a predetermined value, the target speed is set lower. Accordingly, control is performed to suppress the speed of movement of the slide door from being increased due to the weight of the door when the slide door is being operated downhill on a slope, and the occurrence of slack in the wire is suppressed.

If the change in the moving speed of the slide door after the operation of the motor is larger than a predetermined value,
The output of the motor is reduced. As a result, even when the sliding door is operating, when the sliding door is being operated downhill on a slope, a large change in the speed of the sliding door due to the application of the weight of the door is suppressed, and the operation of the sliding door becomes smooth, and the slack of the wire is reduced. Can be prevented.

[0013]

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 diagram showing a vehicle 1 equipped with a drive control device for an automatic sliding door according to the present embodiment.
And a step 3, and a slide door 4 for opening and closing the opening / closing opening 2.
A weather strip fixed to the vehicle body is provided around the entry / exit opening 2, and when the slide door 4 is closed, the weather strip comes in contact with the slide door 4 and the vehicle compartment such as rainwater. To prevent intrusion.

The slide door 4 has an upper end on the front side of the vehicle supported by an upper roller bracket 12 which moves along an upper guide rail 11 provided on an upper edge of the entrance opening 2 and a lower end. The step 3 is supported by a lower roller bracket 13 that moves along a lower guide rail provided on the lower surface. Also,
A rear roller bracket 1 that moves along a rear guide rail 14 provided on a side surface of the vehicle body is provided at a central portion on the rear side of the vehicle.
5 and is configured to be able to move from a fully open position where the getting-on / off opening 2 is fully opened to a fully closed position where it is fully closed.

A closure unit 21 is provided in the slide door 4, and a receiving terminal 22 for receiving power supply to the closure unit 21 is provided at a front edge of the slide door 4. . In addition, a supply terminal 24 that forms a pair with the reception terminal 22 is provided on a pillar 23 that forms an edge of the entry / exit opening 2 on the front side of the vehicle. From the moved position, it is connected to the receiving terminal 22 so that power can be supplied to the closure unit 21. In the slide door 4, the rear roller bracket 15 is connected to a drive wire 25.

The drive wire 25 is provided in a loop inside the vehicle body, and is connected to the rear roller bracket 15 of the slide door 4 at a door mounting portion 31 provided in the middle as shown in FIG. And the drive transmission mechanism 32
The driving force is input from the driving motor 33 to the slide door 4 via the sliding door 4. The drive wire 25 is supported by the guide pulleys 34a and 35a at the front and rear and extends in the front and rear direction along the rear guide rail 14 (see FIG. 1), and the intermediate portion is wound around the drive pulley 34,
A predetermined tension is applied by tension mechanisms 35 provided before and after the portion wound around the drive pulley 34.

As shown in FIG. 3, the tension mechanism 35 has a base 42 fastened and fixed to the vehicle body with a bolt (not shown) inserted through a bolt hole 41, and a base 2 rotatably supported by the base 42. Guide pulleys 43 and 44 and these two
The drive wire 2 is provided between the two guide pulleys 43 and 44, and a support shaft 45 serving as a rotation center is movably supported along a guide long hole 46 provided in the base 42.
A tension pulley 47 supported movably in a direction perpendicular to the direction in which the extension 5 extends, a support rod 48 supporting the support shaft 45, and a biasing force applied to the support rod 48 to apply the tension pulley A spring 49 for applying a predetermined tension to the drive wire 25 via a 47; and a stopper rod 51 for supporting the spring 49 and restricting the support rod 48 from moving in a direction opposite to the direction of applying tension at a predetermined position. And Note that the outer periphery of the driving wire 25 is covered and the driving wire 25 is
Guide tube 5 which slidably supports and guides
2 is fixed to the vehicle body by a mounting bracket 53.

As shown in FIG. 2, the drive pulley 34 is axially connected to the final reduction gear 61 and rotates integrally with the final reduction gear 61. Also, this final reduction gear 61
A pulley-side gear 62 is meshed with a motor-side gear 63 provided on the shaft extension of the pulley-side gear 62, and a meshing electromagnetic clutch 64 is provided between the motor-side gear 63 and the pulley-side gear 62. The electromagnetic clutch 64
Are engaged, the two gears 62, 63 rotate integrally. On the other hand, when the electromagnetic clutch 64 is released, the two gears 62, 63 are rotated.
Is disconnected.

That is, the electromagnetic clutch 64 is a clutch that intermittently connects the motor-side gear 63 and the pulley-side gear 62 (not shown), and the rotating shaft of the motor-side gear 63 has an electromagnetic The motor-side teeth of the clutch 64 are connected, and the door-side teeth of the electromagnetic clutch 64 having irregularities meshing with the irregularities of the motor-side teeth are arranged at the distal ends of the motor-side teeth. The door-side teeth form a connection state meshed with the unevenness of the motor-side teeth by electromagnetic action when the internal coil is energized, and when the energization to the coil is cut off, the internal spring The cutting force apart from the unevenness of the motor-side teeth can be formed by the urging force. The pulley-side gear 62 is connected to the shaft of the door-side teeth.

The motor-side gear 63 is connected through an intermediate gear 71 to a worm 73 provided on a drive shaft 72 of the drive motor 33. Thus, by driving the drive motor 33 with the electromagnetic clutch 64 engaged, the drive pulley 34 is rotated, and the slide door 4 is pulled by the drive wire 25 and can be slid. When the drive of the drive motor 33 is stopped, the slide of the slide door 4 can be restricted by the mechanical load of the drive transmission mechanism 32. On the other hand, when the electromagnetic clutch 64 is released, the slide door 4 can be manually slid without applying the above-mentioned mechanical resistance.

In the vicinity of the final reduction gear 61,
An encoder 75 (for example, a known contact type two-phase encoder) that generates a pulse in accordance with the rotation of the final reduction gear 61, that is, in accordance with the sliding of the slide door 4, is provided. This encoder 75 is used for the sliding door 4
Although it is provided as means for detecting the position, speed and direction of movement, it can be replaced with an encoder using an optical sensor capable of detecting normal rotation and reverse rotation (movement direction) or other position detection switches. It is.

The encoder 75 is provided closer to the slide door 4 than the electromagnetic clutch 64, so that the position, the moving speed, and the moving direction of the slide door 4 can be detected even when the slide door 4 is manually opened and closed. is there.

The drive motor 33 and the electromagnetic clutch 64 are connected to an automatic sliding door unit 76 installed in the vehicle, as shown in FIG.

This automatic sliding door unit 76
A microcomputer M (microcomputer) having a built-in ROM and RAM is connected to a battery 82 for driving the drive motor 33 via a circuit breaker 81, and an electric power supply 83 for driving the microcomputer. It is connected to the. An ignition switch 84 is connected to the automatic sliding door unit 76, and a shift P switch 85 that is turned on when the select lever is selected to the P range is provided between the ignition switch 84 and the ignition switch 84.
And a stop lamp switch 86 that is turned on when the foot brake is operated. further,
A main switch 87 is connected to the automatic sliding door unit 76, and the slide door 4 can be driven by operating the main switch 87.

The automatic sliding door unit 7
6, a speed sensor 91 for detecting the vehicle speed and an alarm buzzer 92 are connected, and a slide door rotation sensor 93 is connected. The slide door rotation sensor 93 includes the encoder 75 described above, and the encoder 75 includes a first pulse output 94 and a second pulse output 95. The pulses output from the pulse outputs 94 and 95 are configured such that the period becomes shorter as the moving speed of the slide door 4 increases, and the pulses output in phase according to the moving direction of the slide door 4 are output. It is configured to be. The sliding door rotation sensor 93 detects the speed and position of the sliding door 4 from the rotation speed of the encoder 75 and outputs a signal when the sliding door 4 reaches the fully open or fully closed position. An inversion detection output 96 and a GND line 97 serving as a ground for matching the voltage with the microcomputer M are provided, and are connected to the automatic sliding door unit 76.

Further, the automatic sliding door unit 76 includes a parking switch 101 which is turned on when a parking brake is operated and a sliding door open switch 1 which is operated when the sliding door 4 is opened.
02, a slide door close switch 103 that is operated when the slide door 4 is closed, and a slide door switch 104 that is turned off when the slide door 4 is fully closed. The first and second supply outputs 105 and 106 for supplying the first supply and the second supply are connected to the supply terminal 24. These first and second
The supply outputs 105 and 106 are connected to an operating current detection unit 107 which measures a passing current and transmits the measured current to the microcomputer M. The supply terminal 24 is connected to the supply terminal 22 when the slide door 4 is in a fully closed position from a position immediately before the fully closed position.

The control unit 111 of the closure unit 21 that receives power supply from the supply terminal 24 includes a latch release actuator 112 that drives a latch on the slide door side locked by a striker of the vehicle body to release the lock state, A half switch 113 that operates by detecting a half lock state (half latch) immediately before the latch is locked by the striker and a full lock switch 114 that operates by detecting a state in which the latch is locked by the striker are connected. Have been. The closure unit 21 is connected to a slide door closure motor 115 that pulls the slide door 4 in the half lock state to the full lock state. Further, there is provided a neutral switch 116 that operates by detecting the neutral state of the sliding door closure motor 115 in a state where the sliding door closure motor 115 has returned to the original position (neutral position) before the sliding door closure motor 115 operates.

In the present embodiment having the above-described configuration, an operation when the slide door 4 is operated will be described with reference to a flowchart shown in FIG.

First, a slide door open or close switch 10
It is determined whether or not the operations 2 and 103 have been performed (S
1). Here, if the remote control can be automatically opened and closed, it may be added to determine whether or not an automatic opening or automatic closing operation has been performed by the remote control. If the switch operation has not been performed, the process branches to step S4, while at the time of operation, it is determined whether or not the operation has started (S2).

At this time, when the operation is started, the duty of the duty output to be output to the drive motor 33 is controlled before the drive motor 33 is controlled so that the operation speed of the slide door 4 becomes a predetermined target speed. The ratio is gradually increased within a certain time, and the output from the drive motor 33 for driving the slide door 4 is increased with time, that is, gradually increased (S3). As a result, it is possible to suppress the sudden increase in the traction force of the slide door 4 immediately after the operation and the repetition of the rapid decrease in the traction force after the increase in the traction force, suppress the momentum of the slide door 4, and discontinuous connection to the drive wire 25. The action of the force and the disturbance of the behavior of the slide door 4 can be prevented. Therefore, the slack of the drive wire 25 that pulls the slide door 4 can be prevented, and the operation of the slide door 4 can be made smooth.

In step S2, when the operation is not started, that is, when the operation is being performed, step S4 is bypassed and the process branches to step S4. Thus, the process of step S3 for gradually increasing the duty ratio to the drive motor 33 can be applied only when the door is stopped and the operation is being performed.

In step S4, it is determined whether or not the operation speed of the slide door 4 after the operation of the motor is equal to or higher than a predetermined value. If less than the specified value,
On the other hand, when the process branches to step S6, if the operating speed is higher than the specified value, that is, the operating speed is higher than the specified value, the target speed as a control target is set lower than usual (S5). This allows
Control is performed to prevent the moving speed of the slide door 4 from increasing due to the application of the weight of the door when the slide door 4 is operated downhill on a hill, so that the slack of the drive wire 25 is suppressed. Further, the brake can be applied to the sliding door 4 accelerated by the weight of the door generated on the slope. Therefore, it is possible to prevent the drive wire 25 from being loosened, and it is possible to prevent a problem that the drive wire 25 is loosened from the rail.

In step S6, it is determined whether or not the change in the operating speed of the slide door 4 after the operation of the motor has changed more than a predetermined value. When there is no change larger than the above value, each process is terminated, and when a large change has occurred, the gain of the arithmetic expression for calculating the target speed is set lower than usual, and the drive motor The output from 33 is reduced. As a result, when the change in the operating speed of the slide door 4 changes greatly, that is, at the start of driving when the drive motor 33 and the electromagnetic clutch 64 are energized, the speed is rapidly increased from the motor stopped state to the target speed. When the speed is reached, control is performed such that the speed is rapidly reduced, and the movement of the slide door 4 is suddenly braked, and a rapid increase in the traction force and a rapid decrease in the traction force are repeated, and the slide door 4 is rapidly pulled. The operation of bouncing, rapidly decelerating and stopping, and also bouncing and stopping, causes the drive wire 25 to be pulled abruptly and then loosened repeatedly, so that a discontinuous force is applied to the drive wire 25 and the sliding door Even if the behavior of No. 4 is disturbed, it is possible to stabilize the operation by reducing the output from the drive motor 33. Therefore, careless loosening of the drive wire 25 can be prevented.

[0034]

As described above, in the drive control apparatus for an automatic sliding door according to the present invention, when the operation of the sliding door is started, the output from the motor driving the sliding door is gradually increased. Thus, the traction force of the sliding door immediately after the operation can be suppressed. As a result, it is possible to suppress the sudden increase in the traction force of the slide door immediately after the operation and the repetition of the rapid decrease in the traction force after the increase in the traction force, suppress the momentum of the slide door, and apply the action of the discontinuous force to the wire. In addition, it is possible to prevent the behavior of the slide door from being disturbed, to prevent the wire from becoming loose, and to smoothly operate the slide door.

When the moving speed of the sliding door is faster than the specified value, the moving speed of the sliding door can be controlled to be slow by setting the target speed of the sliding door low. As a result, when the sliding door is operated in the downhill direction on the slope, control is performed to suppress the speed of movement of the sliding door from being increased due to the weight of the door itself. The brake can be applied to the sliding door accelerated by the weight of the door generated by the sliding door. Therefore, the slack of the wire can be prevented, and the problem that the slack wire protrudes from the rail can be prevented.

If the change in the moving speed of the slide door after the operation of the motor is larger than a predetermined value,
The output of the motor is reduced. As a result, even when the sliding door is operating, when the sliding door is being operated downhill on a slope, a large change in the speed of the sliding door due to the application of the weight of the door is suppressed, and the operation of the sliding door becomes smooth, and the slack of the wire is reduced. Can be prevented.
Further, even when the behavior of the sliding door is disturbed, the operation from the motor can be reduced to stabilize the operation.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram showing a drive transmission mechanism of the embodiment.

FIG. 3 is a diagram showing a tension mechanism of the embodiment.

FIG. 4 is a block diagram according to the embodiment;

FIG. 5 is a flowchart showing an operation of the embodiment.

[Explanation of symbols]

 4 Sliding door 25 Drive wire 33 Drive motor 64 Electromagnetic clutch 76 Auto slide door unit M Microcomputer

Continued on front page F-term (reference) 2E052 AA09 BA02 BA04 CA06 DA00 DA01 DA03 DA08 DB00 DB01 DB03 DB08 EA16 EB01 EC01 GA03 GA06 GA10 GB12 GB15 GC01 GC05 GC10 GD07 GD08 KA02 KA06 KA15 KA16 KA25 KA27 LA06 LA08 LA09

Claims (1)

[Claims] 1. A driving force from a motor is transmitted to a wire via a meshing electromagnetic clutch, the wire is used to pull a slide door in an opening and closing direction, and a moving speed of the slide door is set to a predetermined target speed. An automatic slide door drive control device that controls the motor so that the output from the motor increases with time within a certain period of time when the slide door starts to operate; When the moving speed of the sliding door is higher than a predetermined value, target speed lowering means for setting the target speed to be lower; and a change in the moving speed of the sliding door after the motor is operated,
An output reduction unit that reduces the output of the motor when the output is greater than a predetermined value.