JP3576487B2 - Control system for disengaging clutch when automatic sliding door stops - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automatic sliding door clutch release control device that performs clutch disconnection control when a sliding door is stopped.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a vehicle is provided with a slide door that opens and closes a door opening, and is equipped with an automatic slide door control device that electrically controls the opening and closing of the slide door.
[0003]
This automatic sliding door control device is known in which when the door is fully closed and the door is fully opened, the electromagnetic clutch of the engagement type with the motor is turned off, and then the motor is reversely driven for a predetermined time to release the engagement of the electromagnetic clutch. See JP-A-10-280806).
[0004]
Further, in addition to the present invention, when the motor is stopped, the clutch is disengaged by rotating (reversing) the motor once for a predetermined time (predetermined amount) in a direction opposite to the previous rotation. (See Japanese Patent Application Laid-Open No. 9-279943). The clutch of the present invention is not a mesh type electromagnetic clutch, but when a motor is rotated in either direction, it is mechanically engaged in that direction and rotates in the opposite direction to provide a mechanical engagement. It is also the case.
[0005]
[Problems to be solved by the invention]
However, in such an automatic sliding door control device, in any of the cases described above, the motor is simply reversed, and when the motor is stopped, for example, the driving force of the motor, the driving force of the closure, or the sloping road. Depending on how a force is applied due to a door load or the like, after the clutch is disengaged, it is not known in which direction the force is applied to engage, so the engagement may not be released even if the clutch is reversed.
[0006]
The present invention has been made in view of such a conventional problem, and is not affected by a state at the time of stopping the motor, and is capable of reliably disengaging the meshing type clutch when the door of the automatic sliding door is stopped. It is an object of the present invention to provide a clutch release control device.
[0007]
[Means for Solving the Problems]
In order to solve the above problem, in the clutch release control device of the present invention when the door of the automatic sliding door stops, the driving force from the motor that opens and closes the sliding door is transmitted via a meshing electromagnetic clutch. The automatic sliding door includes a clutch disengaging means for stopping the motor to cut off the power supply to the electromagnetic clutch, and then operating the motor in both rotation directions for a short time to disengage the electromagnetic clutch. .
[0008]
That is, when stopping the slide door, the motor is stopped and the energization to the electromagnetic clutch is cut off, and then the motor is operated in both rotation directions for a short time to put the electromagnetic clutch into a disconnected state.
[0009]
If no force is applied to the electromagnetic clutch when the door is stopped, the electromagnetic clutch enters a disconnected state when the power supply to the electromagnetic clutch is cut off. Further, even when a force is applied and the gears (teeth) in the electromagnetic clutch are in mesh with each other, the mesh is released by either reversing or reversing the motor, and the clutch is disconnected by a spring built in the electromagnetic clutch. At this time, if the electromagnetic clutch is disconnected at the time of motor reversal, it is in a disconnected state, so that it does not mesh again when reversing.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An 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 clutch release control device when the automatic sliding door stops according to the present embodiment. A step 3 is provided, and a slide door 4 for opening and closing the opening / closing 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.
[0011]
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 moves along the side surface 12 of the step 3. It is supported by the lower roller 13. 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 opening / closing opening 2 is fully opened to the fully closed position where the opening / closing opening 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 receiving terminal 16 is provided on a pillar 17 that forms an edge of the entrance 2 for a vehicle on the front side of the vehicle. 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 traction member 19 extending from the side surface 12 of the step 3, and is moved by the traction member 19 in the vehicle front-rear direction. Is configured.
[0012]
A moving mechanism 21 for moving the slide door 4 via the traction member 19 is provided inside the step 3 where the traction member 19 extends, as shown by a broken line in FIG. The moving mechanism 21 supports a support member 22 for supporting an end of the traction member 19, a toothed belt 23 provided with the support member 22, and the belt 23 can be moved along the side surface 12 of the step 3. , And first and second guide pulleys 24 and 25 supported at the corners of the step 3 and a toothed drive pulley 27 for moving the belt 23.
[0013]
The drive pulley 27 is axially connected to a final reduction gear 31, and the final reduction gear 31 is meshed with a 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.
[0014]
The electromagnetic clutch 37 is a clutch that intermittently connects between the motor-side transmission gear 36 and the drive pulley-side transmission gear 32 (not shown). A tooth (gear) is connected, and a door-side tooth (gear) having irregularities meshing with the irregularities of the motor-side teeth is arranged at the tip side of the motor-side teeth. The door-side teeth form a connection state meshed with the unevenness of the motor-side teeth by an 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 drive pulley-side transmission gear 32 is connected to the shaft of the door-side teeth.
[0015]
In the vicinity of the toothed drive pulley 27, an installation location of a slide door rotation sensor 53, which will be described later, is set, and the slide door position, the movement speed and the movement 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 well-known contact type two-phase encoder, but may be an optical sensor capable of detecting normal rotation and reverse rotation (moving direction).
[0016]
Thus, when the electromagnetic clutch 37 is controlled to be on, the drive motor 33 and the drive pulley 27 are joined to each other, and when the electromagnetic clutch 37 is controlled to be off, the drive motor 33 is controlled to be engaged. A cutting state is formed in which the sliding door 4 is separated from the driving pulley 27, and the sliding 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.
[0017]
The automatic sliding door unit 38 is mainly composed of a microcomputer M (microcomputer) having a built-in ROM and RAM, and is connected via a circuit breaker 41 to a battery 42 for driving the driving motor 33 described above. Are connected to an electric power supply 43 for driving the microcomputer. An ignition switch 44 is connected to the automatic sliding door unit 38, and a shift P switch 45 that 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. A stop lamp switch 46 that is turned on when the foot brake is operated is connected. 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.
[0018]
Further, a speed sensor 51 for detecting a vehicle speed and an alarm buzzer 52 are connected to the automatic sliding door unit 38, and a sliding door rotation sensor 53 is connected to the automatic sliding door unit 38. The slide door rotation sensor 53 includes an encoder. The encoder includes a first pulse output 54 and a second pulse output 55. The pulses output from both the pulse outputs 54 and 55 are configured such that the period becomes shorter as the moving speed of the sliding door 4 increases, and the pulses output in phase according to the moving direction of the sliding door 4 are 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. An inversion detection output 56 and a GND line 57 as a ground for matching the voltage with the microcomputer M are provided, and are connected to the automatic sliding door unit 38.
[0019]
Further, the automatic sliding door unit 38 includes a parking switch 61 that is turned on when a parking brake is operated, a sliding door open switch 62 that is operated when opening the sliding door 4, and a closing switch 62 that is operated when closing. 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 is connected to the closure unit 15. First and second supply outputs 65 and 66 for supplying power are connected to the supply terminal 18. The first and second supply outputs 65 and 66 are connected to an operating current detecting unit 67 which measures a passing current and transmits the measured current to the microcomputer M.
[0020]
Reference numeral 18 denotes the supply terminal, which is connected to the supply terminal 16 when the slide door 4 is in the fully closed position from the position immediately before the fully closed position.
[0021]
The control unit 71 of the closure unit 15 that receives power supply from the supply terminal 18 includes a latch release actuator 72 that drives a latch on the slide door 4 side locked by a striker of the vehicle body to release a locked state, Is connected to a half switch 73 that detects and operates a half lock state (half latch) immediately before is locked by the striker, and a full lock switch 75 that detects and operates when the latch is locked to the striker. I have. The closure unit 15 is connected to a slide door closure motor 76 that draws the slide door 4 in the half-lock state to the full-lock state. Further, there is provided a neutral switch 74 which operates by detecting the neutral state of the slide door closure motor 76 in a state where it has returned to the original position (neutral position) before the slide door closure motor 76 operates.
[0022]
In the present embodiment according to the above configuration, an operation when the slide door 4 is stopped will be described with reference to a flowchart shown in FIG.
[0023]
In other words, while the slide door open / close switches 62 and 63 are operated to automatically open or close, or when the slide door 4 is manually opened or closed by a predetermined amount, the first of the slide door rotation sensors 53 is operated. And pulses from the second pulse outputs 54 and 55 are output. When it is confirmed that the slide door 4 has been manually opened or closed by a predetermined amount based on the pulses, the slide door 4 automatically opens or closes. When the slide door 4 is automatically opened or automatically closed, the duty ratio of the duty output outputted to the drive motor 33 is controlled to drive the slide door 4 at a constant speed (step S1: Step display is omitted below).
[0024]
Then, it is determined whether or not each of the switches 62 and 63 has been operated (S2). If the switch is operated, it is determined whether or not the switch has been turned off during the operation (S3). At this time, when the corresponding switch is turned off, the driving motor 33 is stopped and the connected state of the electromagnetic clutch 37 is maintained (S4), and the process proceeds to the step S2. If it is determined in step S2 that the switch has not been operated by the switch operation, or if the switch has not been turned off during the operation in step S3, the process branches to step S5.
[0025]
In this step S5, it is determined from the state of the slide door switch 64 whether or not the slide door 4 has been fully closed, and if so, the power supply to the drive motor 33 is cut off and the drive motor 33 is stopped. Then, the power supply to the electromagnetic clutch 37 is cut off (S6). In this state, after the power is supplied to the drive motor 33 for a short time (for a moment) so that the drive motor 33 operates in the closing direction (S7), the power supply to the drive motor 33 is cut off (S8). Then, after the power is supplied to the drive motor 33 for a short time (for a moment) so that the drive motor 33 operates in the opening direction (S9), the power supply to the drive motor 33 is cut off (S10), and each process is terminated. .
[0026]
At this time, when the vehicle 1 is stopped on a flat place and no force is applied to the motor-side teeth and the door-side teeth of the electromagnetic clutch 37, the internal spring is turned off when the power supply to the electromagnetic clutch 37 is cut off. By the biasing force, the unevenness of the internal door-side teeth is separated from the unevenness of the motor-side teeth to be in a cut state.
[0027]
On the other hand, even when the force is applied and the unevenness of the door-side teeth in the electromagnetic clutch 37 and the unevenness of the motor-side teeth are engaged, when the drive motor 33 is rotated for a short time in either the closing direction or the opening direction. In addition, the engagement can be released, and the disconnected state can be formed by the spring built in the electromagnetic clutch 37. At this time, if the electromagnetic clutch 37 is disconnected during normal rotation of the motor (when the motor rotates in the closing direction), the electromagnetic clutch 37 is in a disconnected state, and does not mesh again when the motor reverses (rotates in the opening direction).
[0028]
As described above, in the case of using the meshing type electromagnetic clutch 37 for disengaging the door-side teeth and the motor-side teeth (gears) to form a cut state, a force is applied to the door-side teeth (gears) and the motor-side teeth. Even when the (gears) are engaged, the meshing can be released and a cut state can be formed by rotating the drive motor 33 forward or reverse.
[0029]
Therefore, even when it is not known to which side the motor driving force, the closure driving force, or the door load due to the slope is applied, the electromagnetic clutch 37 can be securely mounted without being affected by the state when the motor is stopped. Can be cut off.
[0030]
If it is determined in step S5 that the sliding door 4 has not reached the fully closed position, the sliding door 4 reaches the fully open position from the accumulated pulses obtained by counting the first and second pulse outputs 54 and 55 of the encoder. It is determined whether or not it has been performed (S11). If the full-open position has not been reached, the process branches to step S1 to perform constant speed control, while if the full-open position has been reached, the process proceeds to step S12.
[0031]
In this step S12, by adjusting the duty output to the drive motor 33, the slide door 4 is actuated with a slight force in the closing direction for a short time, and the slide door 4 is provided at a closed position substantially equal to a roller dimension (not shown) of the rear roller 14 from the fully opened position. After being moved to a position as close as possible to the checker, the power supply to the drive motor 33 is cut off to stop the drive motor 33, and the power supply to the electromagnetic clutch 37 is cut off (S13). The checker (not shown) is provided in the closing direction by a distance substantially equal to the roller size from the fully opened position of the guide rail of the slide door 4. When the slide door 4 opens and closes, the roller provided on the slide door 4 side passes through the checker. The roller is pushed to allow the roller to pass, and after the roller passes, the resilient force of the return spring or the like of the checker protrudes into the guide rail, and the roller is locked so as not to move in the closing direction by the spring force. Then, the drive motor 33 is energized for a short time (for a moment) so that the drive motor 33 operates in the opening direction for a short time (S14), and the energization of the drive motor 33 is cut off (S15), and each process is terminated. I do.
[0032]
Here, in the present embodiment, the slide door 4 after moving to the fully open position is moved in the closing direction with a slight force to stop the slide door 4 as close as possible to the checker. Make sure that there is no space between the rollers and that the external force applied to the sliding door 4 after full opening does not apply the moving force and inertia of this space to the checker. Has been prevented.
[0033]
For this reason, if the drive motor 33 is operated in the closing direction and the opening direction as shown in steps S7 and S9 after the electromagnetic clutch 37 is turned off at the time of full opening, there is a risk of getting over this checker. The stop control (S12 to S15) is different from the above-described steps S6 to S10.
[0034]
In the present embodiment, an example in which the sliding door does not stop in the middle of opening and closing (half open), that is, a device that drives to fully open when opened and to fully closed when closed is taken as an example. Although described above, the present invention is not limited to this, and the above-described door stop-time control (S6 to S10) may be performed in the case where the door stops halfway open.
[0035]
Also, when the checker is not provided, or when the checker is fully opened at the time of full opening even when the checker is attained, and the control for short-time operation in the closing direction is not performed after reaching the fully opened position, similarly, at the time of full opening, the above described Door stop control (S6 to S10) may be performed.
[0036]
Further, in the above-described door stop control (S6 to S10), the reversal is performed after the short-time inversion, but the reversal may be performed after the short-time inversion.
[0037]
【The invention's effect】
As described above, in the clutch release control device when the door of the automatic sliding door is stopped according to the present invention, a force is applied to the engagement type electromagnetic clutch that disengages the gears (teeth) to form a disconnected state. Even if the gears (teeth) are engaged, the engagement can be released and a disconnected state can be formed by stopping the motor, turning off the electromagnetic clutch, and then rotating and reversing the motor.
[0038]
Therefore, even when it is not known to which side the motor driving force, the closure driving force, or the door load due to the sloping road is applied, the electromagnetic clutch is surely not affected by the state when the motor is stopped. It can be in a disconnected state.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a diagram showing an arrow A of 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]
4 Slide door 33 Drive motor 37 Mesh-type electromagnetic clutch 38 Auto slide door unit M Microcomputer

Claims (1)

In an automatic sliding door in which a driving force from a motor that opens and closes the sliding door is transmitted through a meshing electromagnetic clutch,
An automatic slide, comprising: clutch disengaging means for stopping the motor to cut off the power supply to the electromagnetic clutch, and then operating the motor for a short time in both rotation directions to disengage the electromagnetic clutch. Control system for releasing the clutch when the door stops.

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