JP3602390B2 - Automatic sliding door device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automatic sliding door device that automatically opens and closes a sliding door provided on a side of a so-called one-box car.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an automatic sliding door device, for example, one described in Japanese Patent Application Laid-Open No. H10-280806 is known. This automatic sliding door device is configured to be able to open and close the following three types.
First, a motor is driven to open and close automatically by operating an open / close operation switch provided in a driver's seat or the like. Second, when the door opening operation is detected by a door switch or a manual slide (or speed) of a predetermined distance (or speed), the motor is driven, and thereafter the door is automatically opened and closed. Third, the motor is manually opened and closed without driving the motor. The switching between the automatic opening / closing mode, which is the first and second opening / closing modes, and the manual opening / closing mode, which is the third opening / closing mode, is configured to be performed by a main switch provided near the driver's seat. An electromagnetic clutch that connects and disconnects the motor and the door is provided in the middle of the transmission path of the driving force from the motor to the door. The electromagnetic clutch automatically opens and closes the sliding door in the automatic opening and closing mode. When the manual opening / closing mode is selected, the fastening is released so that the driving mechanism including the motor does not become a load during manual opening / closing.
[0003]
[Problems to be solved by the invention]
As described above, when the automatic opening / closing mode is selected, the opening / closing of the sliding door is performed based on the driving of the motor, so the sliding speed is limited to a predetermined speed or less, and the sliding door is fully opened and closed. The shock that is input when you do it is also suppressed.
On the other hand, in the manual opening / closing mode in which automatic opening / closing is not performed, since the engagement of the electromagnetic clutch is released, the force applied by the operator may be too large, or the sliding door may slide in the sliding direction when parking on a slope. If the door's own weight acts, the sliding speed may be higher than a predetermined value. As described above, when the sliding speed of the sliding door is equal to or higher than the predetermined speed, there is a problem that a loud noise is generated when the sliding door is fully closed or fully opened, or a shock is generated, thereby deteriorating the operation feeling. A large force is also input to the full-open checker, full-close stopper, latch, power supply terminal, etc., which are members that collide when fully opened or fully closed. There is a problem that it is necessary to make a setting that can endure, which leads to an increase in cost.
Also, when the door's own weight is acting in the sliding direction on a steep slope, the door may slide at a speed exceeding the operation speed of the person, and in this case, the person performing the opening operation may Opening and closing operations must be performed while suppressing the sliding speed that accelerates in the opening direction, which is opposite to the direction, and there is a problem that the operation becomes difficult.
[0004]
The present invention has been made in view of the conventional problems described above, and even in the manual opening / closing mode, the opening / closing sliding speed of the sliding door is suppressed, the generation of noise and shock is suppressed, and the operation feeling is deteriorated. In addition to preventing the opening of parts, the load restriction of parts setting is eased to prevent cost increase.In addition, on hills where the weight of the sliding door acts in the opening direction, the difficult operation of performing the opening operation while suppressing the opening speed is reduced. It aims to improve operability by eliminating it.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the invention, the slide door is configured to be able to slide open and close by a driving force transmitted from a motor via a drive transmission mechanism, and in the middle of the drive transmission mechanism, A clutch for switching between a fastened state in which the motor and the sliding door are connected and a released state in which the connection between the motor and the sliding door is disconnected is provided, and a control unit for controlling the driving of the motor is provided. A changeover switch for switching between an automatic opening and closing mode and a manual opening and closing mode is provided. When the changeover switch is set to the automatic opening and closing mode, the motor is driven in a clutch engaged state as necessary based on an input from the input means. When the slide door is automatically opened and closed and the changeover switch is set to the manual open / close mode In an automatic sliding door device configured to release a clutch, a speed detecting means for detecting an opening / closing sliding speed of the sliding door is provided, and the control unit has a manual opening / closing mode selected by a changeover switch. When the detected opening / closing slide speed exceeds a preset upper limit speed, the clutch is engaged to execute a slide speed suppression control for suppressing the slide speed, and when executing the slide speed suppression control, The clutch is released when the opening / closing slide speed of the slide door is lower than a preset control suspension speed lower than the upper limit speed .
[0006]
According to a second aspect of the present invention, in the automatic sliding door device according to the first aspect, the control unit may be configured to intermittently engage a clutch when executing the slide speed suppression control. Good.
[0007]
Also, as described in claim 3, in the automatic sliding door device according to claim 1 or 2, wherein the speed detecting means, provided between the clutch and the sliding door in the drive mechanism, opening and closing sliding It may be constituted by means for outputting a signal corresponding to the speed.
[0008]
Function and Effect of the Invention
In the automatic sliding door device according to the first aspect, when the manual opening / closing mode is selected, the clutch is released and the connection between the sliding door and the motor is disconnected. Therefore, when the slide door is manually opened and closed, the opening and closing slide can be smoothly performed without applying a load on the motor side.
[0009]
In the state where the manual mode is selected, when a sudden operation is performed, or when the own weight of the sliding door is added in the sliding direction due to parking on a slope, the opening / closing sliding speed of the sliding door is set in advance. It may be faster than the upper limit speed. In this case, the control unit executes the slide speed suppression control to engage the clutch. Therefore, the opening / closing slide of the slide door is loaded by the drive mechanism on the motor side, and the opening / closing slide speed is reduced. Therefore, even when the slide door is manually opened and closed, the opening and closing slide speed of the slide door does not exceed the preset upper limit speed.
[0010]
As described above, according to the present invention, the opening / closing sliding speed of the sliding door during manual opening / closing can be suppressed to the upper limit speed or less, so that a loud noise or a shock is generated when the door is fully closed or fully opened. This improves the operability of the vehicle by eliminating the need for opening / closing operation while suppressing the sliding speed, which accelerates due to the weight of the sliding door when parking on a slope, while improving the operability. The input to the fully open checker, fully closed stopper, latch, power supply terminal, etc., which are parts that collide when fully opened or fully closed, can be suppressed. There is an effect that the load can be eased to prevent an increase in cost.
[0011]
In the execution of the slide speed suppression control, when the opening / closing slide speed of the slide door decreases to the control stop speed, the control unit releases the engagement of the clutch. Therefore, after the clutch is released, it can be opened and closed again by the force applied by a human hand or can be opened and closed by the weight of the sliding door. If it exceeds, the slide speed suppression control is executed, and the opening / closing slide speed is reduced again.
[0012]
Further, in the invention according to claim 2, the control unit intermittently engages the clutch when executing the slide speed suppression control. Accordingly, the opening / closing slide speed can be gradually reduced by intermittently applying a load, and a higher operation feeling can be obtained without the discomfort that the opening / closing slide speed of the slide door suddenly decreases.
[0013]
According to the third aspect of the invention, the speed detecting means outputs a signal corresponding to the opening / closing slide speed, and the control unit executes the slide speed suppression control in response to an input from the speed detecting means. I do.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
FIG. 2 is a perspective view showing a vehicle 1 equipped with the automatic sliding door device according to the embodiment. The vehicle 1 has an opening 2 and a step 3 on a side surface thereof, A slide door 4 that opens and closes the opening 2 is provided.
[0015]
The slide door 4 has an upper end on the front side of the vehicle, a lower end on the front side of the vehicle, and a central part on the rear side of the vehicle supported by the vehicle body. That is, the upper end of the slide door 4 on the vehicle front side is supported by the upper roller member 11 that moves along the upper edge of the entry / exit opening 2, and the lower end of the slide door 4 on the vehicle front side is located on the side surface of the step 3. The slide door 4 is supported by a lower roller member 13 that moves along the rear side of the vehicle, and a center portion of the slide door 4 on the vehicle rear side is supported by a rear roller member 14 that moves along the side surface of the vehicle body.
[0016]
As shown in FIG. 2, the upper part of the lower roller member 13 of the slide door 4 is fixed to a towing member 18 extending from the side surface of the step 3, and the towing member 18 is towed. To slide back and forth.
[0017]
As shown by a broken line in FIG. 1, a motor 31 is provided inside the step 3 where the traction member 18 is extended, and the slide door 4 is moved via the traction member 18. A drive transmission mechanism 21 is provided. The drive transmission mechanism 21 includes a support member 22 that supports an end of the traction member 18, a belt 23 to which the support member 22 is connected, and a belt 23 movably supporting the belt 23 along the side surface of the step 3. A first pulley 24 and a second pulley 25 are provided, and a drive pulley 27 that is provided at the corner of the step 3 and moves the belt 23 is provided. An electromagnetic clutch 28 is provided between the driving pulley 27 and the motor 31. An intermediate gear 29c and an intermediate gear 29b, both of which are connected and disconnected by the electromagnetic clutch 28, are provided at the upper and lower portions of the electromagnetic clutch 28. The motor 31 is connected to the intermediate gear 29c via the worm gear reducer 30, the intermediate gear 29b is connected to the final reduction gear 29a, and the drive pulley 27 is provided coaxially with the final reduction gear 29a.
[0018]
As shown in FIG. 3, the worm gear reducer 30 includes a multi-worm worm 33 provided on the rotation shaft of the motor 31, and a worm wheel 34 that meshes with the multi-worm 33 and meshes with the intermediate gear 29. Consists of Thus, when the electromagnetic clutch 28 is turned off and disconnected, the motor 31 and the gears on the motor 31 side, that is, the worm gear reducer 30, the intermediate gear 29d and the intermediate gear 29c, and the driving pulley 27 and the gear on the driving pulley 27 side, that is, The final reduction gear 29a and the intermediate gear 29b are separated from each other, and a state where the slide door 4 can be opened and closed manually is formed. On the other hand, when the electromagnetic clutch 28 is engaged and controlled to be engaged, the motor 31 and the gear on the motor side are connected to the drive pulley 27 and the gear on the drive pulley so that the slide door 4 can be automatically opened and closed. Is done.
[0019]
A full-open limit switch 41 is provided at a position along the movement path of the belt 23 and near the second pulley 25. The fully open limit switch 41 detects that the slide door 4 has reached the fully open position by detecting the support member 22 when the slide door 4 is moved to the fully open position.
[0020]
An intermediate switch 42 is provided between the second pulley 25 and the first pulley 24. The intermediate switch 42 detects that the slide door 4 has reached an intermediate position between the fully open position and the fully closed position by detecting the support member 22 at this position.
[0021]
Although not shown in detail, a fully-closed limit switch 43 that is closed when the slide door 4 is fully closed is provided at the rear end edge of the entry / exit opening 2 (see FIG. 4). .
[0022]
An encoder 44 having a disk that is rotated by the rotation of the drive pulley 27 is provided coaxially with the drive pulley 27. The encoder 44 detects the opening / closing slide speed of the slide door 4. That is, when the slide door 4 slides automatically, the operation of the motor 31 rotates the motor-side gear, the electromagnetic clutch 28, the drive pulley-side gear, and the drive pulley 27. When the slide door 4 is manually slid, the belt 23 moves and the drive pulley 27 rotates. Accordingly, a pulse signal corresponding to the rotation speed of the driving pulley 27 is output from the encoder 44 both in the automatic mode and the manual mode.
[0023]
The switches 41, 42, 43 and the encoder 44 described above are connected to the control unit 40. Further, as shown in FIG. 4, an ignition switch 51, an opening / closing operation switch 52, a main switch (switching switch) 53, a motor 31, and an electromagnetic clutch 28 are connected to the control unit 40, and the main switch 53 is turned on. In this state, the automatic open / close mode is set. When the main switch 53 is not turned on, the manual open / close mode is set and the slide speed suppression control, which is a feature of the present embodiment, is executed.
[0024]
The opening / closing control in the automatic opening / closing mode and the slide speed suppression control in the manual opening / closing mode will be described with reference to a flowchart shown in FIG.
In step 101, based on whether or not the main switch 53 is turned on (ON), if it is turned on (if it is ON), the process proceeds to the automatic opening and closing mode of step 102 and subsequent steps. If so, the process proceeds to the slide speed suppression control in the manual opening / closing mode in step 107 and subsequent steps. That is, the main switch 53 corresponds to a switch in claims for switching between the automatic opening and closing mode and the manual opening and closing mode, and is installed near the driver's seat.
[0025]
In the automatic opening / closing mode, first, in step 102, it is determined whether or not the opening / closing operation switch 52 is ON. Execute. That is, the open / close operation switch 52 is provided near the driver's seat or is a remote control switch operated from the outside. The open / close switch 52 includes an open switch and a close switch, and when the open switch is turned on, The slide door 4 is opened at a predetermined constant speed, and when the close switch is turned on, the slide door 4 is closed at a predetermined constant speed.
[0026]
On the other hand, if it is OFF in step 102, the process proceeds to step 103 to determine whether the opening / closing slide speed is faster or slower than the preset assist setting speed Vc. If it is faster than Vc, the process proceeds to step 104.
Further, in step 104, it is determined whether or not the state in which the slide opening / closing speed is higher than the assist set speed Vc is longer than a predetermined set time T. If shorter than the set time T, the process returns to step 101. If it is longer, the routine proceeds to step 105, where open / close constant speed control is executed.
That is, even when the opening / closing operation switch 52 is not operated, when the slide door is manually slid in the opening direction or the closing direction, the state where the speed is faster than the assist set speed Vc is maintained longer than the set time T. Then, it is determined that the sliding door 4 is about to be opened or closed, and the sliding door 4 is automatically slid in the sliding direction at a constant speed.
[0027]
In the opening / closing control in the above-mentioned automatic opening / closing mode executed when the main switch 53 is turned on, the electromagnetic clutch 28 is normally turned off and the opening / closing constant speed control in step 105 or 106 is performed. Is performed, the electromagnetic clutch 28 is engaged (ON) to drive the motor 31.
[0028]
Next, a description will be given of the slide speed suppression control subsequent to step 107. First, in step 107, it is determined whether or not the slide opening / closing speed of the slide door 4 is higher than a preset upper limit speed VA. If the slide door 4 slides at a high speed, the process proceeds to step 108, where the electromagnetic clutch 28 is turned on and engaged.
On the other hand, if the slide opening / closing speed is lower than the upper limit speed VA in step 107, the process proceeds to step 109 to determine whether or not the slide opening / closing speed is higher than a preset control suspension speed VB. Returning to step 101, if the speed is lower than the control suspension speed VB, the routine proceeds to step 110, where the clutch is turned off to release the engagement. Incidentally, the control suspension speed VB is set lower than the upper limit speed VA to prevent chattering from occurring.
[0029]
Note that the engagement of the electromagnetic clutch in step 108 may be intermittent or complete. In the former case, the opening / closing slide speed of the slide door 4 is gradually reduced. On the other hand, in the latter case, the opening / closing slide speed of the slide door 4 is instantaneously reduced, but the engagement of the electromagnetic clutch 28 is immediately released based on the processing of steps 109 → 110, that is, such an engagement Since the release is repeated, the speed gradually decreases in this case as well.
[0030]
Next, the operation of the embodiment will be described.
B) Automatically opening and closing the slide door 4 When automatically opening and closing the slide door 4, the main switch 53 is turned on. In this state, when the driver or the like operates the open / close operation switch 52, the electromagnetic clutch 28 And the motor 31 is driven, and the slide door 4 automatically slides at a constant speed in either the opening direction or the closing direction according to the operation state of the opening / closing operation switch 52.
[0031]
Alternatively, even if the opening / closing operation switch 52 is not operated, if the slide door 4 is manually opened and closed at a speed higher than the assist set speed Vc for more than a predetermined time T, the electromagnetic clutch 28 is automatically turned on. And the motor 31 is driven to slide the slide door 4 at a constant speed.
B) When opening and closing the slide door 4 manually
To completely open and close the slide door 4 manually, the main switch 53 is switched to the OFF side. In this case, the electromagnetic clutch 28 is turned off, and the drive pulley 27, the final reduction gear 29a, and the intermediate gear 29b are disconnected from the intermediate gear 29c, the intermediate gear 29d, the worm gear reducer 30, and the motor 31, and the intermediate gear is disconnected. Since the load is not applied to the 29c, the intermediate gear 29d, the worm gear reducer 30 and the motor 31, the slide door 4 can be manually opened and closed by sliding. Note that the final reduction gear 29a and the drive pulley 27 are coaxial, and the final reduction gear 29a has an overwhelmingly larger number of teeth than the intermediate gear 29b. Thus, the force for rotating the intermediate gear 29a may be small, and the force acting as a load for manual sliding opening and closing of both gears 29a and 29b is extremely small.
[0033]
In the state of the manual opening / closing mode, when the vehicle is tilted and its own weight acts on the slide door 4 to increase the slide speed or performs a violent operation, the slide door 4 is moved to the upper limit speed. If the slide is performed at a speed higher than VA, the slide speed suppression control is executed and the electromagnetic clutch 28 is engaged (the flow of steps 101 → 107 → 108). Therefore, the intermediate gears 29c and 29d, the worm gear reducer 30, and the motor 31 act as loads on the slide door 4, and the opening / closing slide speed is reduced. Thereafter, when the opening / closing slide speed becomes lower than the control suspension speed VB due to this deceleration, the engagement of the electromagnetic clutch 28 is released (the flow of steps 101 → 107 → 109 → 110). Can be continued.
[0034]
As described above, in the present embodiment, when the slide door 4 is opened and closed at a rapid speed higher than the upper limit speed VA in the manual mode in which the main switch 53 is turned off, the speed is automatically reduced to a predetermined value. Is not opened / closed at a speed exceeding the upper limit speed VA, the fully open checker (not shown) for holding the slide door 4 at the full open position with a predetermined holding force at the time of full open or full close, It is possible to reduce the maximum input to a latch (not shown) that locks when the slide door 4 is fully closed and a power supply terminal (not shown) connected between the vehicle body and the slide door when the slide door 4 is fully closed. The effect that the cost of parts can be reduced can be obtained, and the generation of noise and vibration can be suppressed. In addition, even when the self-weight of the slide door 4 is acting in the sliding direction on a steep slope, the slide at a speed exceeding the operation speed of the person is no longer performed, and the person who manually operates the slide door 4 is accelerated. It is no longer necessary to open and close while holding down the sliding door 4 that moves. Therefore, the operation feeling can be improved.
[0035]
Further, in the present embodiment, since the worm gear reducer 30 is used as the drive transmission mechanism 21, when the electromagnetic clutch 28 is engaged and the motor 31 is not driven, the load on the slide door 4 is large, 4, the opening / closing slide speed can be reliably reduced.
[0036]
Although the embodiment has been described with reference to the drawings, the present invention is not limited to this. For example, in the embodiment, the opening / closing of the slide door 4 is performed as speed detection means for detecting the opening / closing slide speed of the slide door 4. Although the encoder 44 that outputs a pulse according to the slide speed is used, the present invention is not limited to this, and a unit that outputs a signal having a pulse width corresponding to the opening and closing slide and a unit that detects the moving distance of the slide door 4 Various means such as combining means for detecting the passage of time may be used.
[0037]
Although the belt 23 is shown as a means for transmitting the driving torque of the driving pulley 27 to the slide door 4, other means such as a chain or a wire may be used.
[Brief description of the drawings]
FIG. 1 is a plan view showing an automatic sliding door device according to an embodiment of the present invention.
FIG. 2 is a perspective view of a vehicle equipped with the automatic sliding door device of the embodiment.
FIG. 3 is a sectional view of a main part of the embodiment.
FIG. 4 is a block diagram showing a control unit according to the embodiment.
FIG. 5 is a flowchart illustrating a control flow according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle 2 Boarding opening 3 Step 4 Slide door 11 Upper roller member 13 Lower roller member 14 Rear roller member 18 Traction member 21 Drive transmission mechanism 22 Support member 23 Belt 24 First pulley 25 Second pulley 27 Drive pulley 28 Electromagnetic clutch 29a Final deceleration Gear 29b Intermediate gear 29c Intermediate gear 29d Intermediate gear 30 Worm gear reducer 31 Motor 33 Multiple worm 34 Worm wheel 40 Control unit 41 Fully open limit switch 42 Intermediate switch 43 Fully closed limit switch 44 Encoder 51 Ignition switch 52 Opening / closing operation switch T Setting time VA upper limit speed VB control stop speed Vc assist set speed

Claims (3)

The sliding door is configured to be able to open and close by a driving force transmitted from a motor via a driving transmission mechanism,
In the middle of the drive transmission mechanism, a clutch is provided for switching between a fastened state in which the motor and the sliding door are connected and a released state in which the motor and the sliding door are disconnected, and a control unit for controlling the driving of the motor. Is provided,
The control unit is provided with a switch for switching between an automatic opening and closing mode and a manual opening and closing mode,
When the changeover switch is set to the automatic opening / closing mode, the motor is driven in the clutch engaged state as necessary based on the input from the input means to automatically open and close the sliding door, and the changeover switch is set to the manual opening / closing mode. In an automatic sliding door device configured to release the clutch when set,
Speed detecting means for detecting the opening and closing slide speed of the slide door is provided,
The control unit performs a slide speed suppression control that suppresses the slide speed by engaging the clutch when the detected open / close slide speed exceeds a preset upper limit speed when the manual open / close mode is selected by the changeover switch. When the slide speed suppression control is executed, the clutch is released when the opening / closing slide speed of the slide door is lower than a preset control stop speed lower than the upper limit speed . An automatic sliding door device, characterized in that: The automatic slide door device according to claim 1, wherein the control unit is configured to intermittently engage a clutch when executing the slide speed suppression control. The said speed detection means is provided between the clutch and the slide door in the said drive mechanism, and is comprised by the means which outputs the signal according to opening / closing slide speed, The Claims 1 or 2 characterized by the above-mentioned. Automatic sliding door device.

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