JP2001152746A - Automatic sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain an opening/closing slide speed of a sliding door even in a manual opening/closing mode, to prevent the deterioration of an operation feeling by restraining generation of noise and a shock, to relieve load limiting for setting a part, and to prevent a cost increase. SOLUTION: In an automatic sliding door device constituted in such a way that a sliding door 4 is automatically slidingly opened/closed by driving a motor 31 in a clutch fastening state when necessary when a control unit 40 for opening/closing the sliding door 4 by controlling driving of the motor 31 is set in an automatic opening/closing mode and an electromagnetic clutch 28 is released when set in a manual opening/closing mode, the control unit 40 is constituted so as to practice slide speed restraining control for restraining a slide speed by fastening the electromagnetic clutch 28 when an opening/closing slide speed exceeds a preset upper limit speed at manual opening/closing mode selecting time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic sliding door device for automatically opening and closing a sliding door provided on a side of a so-called one-box car.

[0002]

2. Description of the Related Art Conventionally, as an automatic sliding door device,
For example, the one described in JP-A-10-280806 is known. This automatic sliding door device is configured to be able to open and close the following three types. First, the 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 opening operation of the door is detected by a door switch or manual sliding of a predetermined distance (or speed), the motor is driven, and thereafter, the door is automatically opened and closed. Third
Are manually opened and closed without driving the motor. In addition,
An automatic opening / closing mode as the first and second opening / closing modes described above;
Switching to the manual opening / closing mode, which is the third opening / closing mode, is performed by a main switch provided near the driver's seat. An electromagnetic clutch for connecting and disconnecting the motor and the door is provided in the middle of the driving force transmission path from the motor to the door.
When the sliding door is automatically slid in the automatic opening / closing mode, the door is fastened, and when the manual opening / closing mode is selected, the fastening is released, and the driving mechanism including the motor does not become a load during manual opening / closing. It is configured as follows.

[0003]

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 that the sliding speed is limited to a predetermined speed or less. The shock that is input when fully opened or fully closed is also suppressed. On the other hand, in the manual opening / closing mode in which automatic opening / closing is not performed, the engagement of the electromagnetic clutch is released, so the force applied by the operator is too large, or the sliding door moves 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, a shock is generated, and the operation feeling is deteriorated. A large force will be input to the full-open checker, fully-closed 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 weight of the door 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 Opening and closing operations are performed while suppressing the slide speed of accelerating in the opening direction, which is opposite to the direction, and there is a problem that the operation becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. Even in the manual opening / closing mode, the opening / closing sliding speed of the sliding door is suppressed, and the operation feeling is suppressed while suppressing the generation of noise and shock. In addition to preventing the deterioration of the sliding door, the load limit of the part setting is eased to prevent cost increase, and in addition, the opening operation is performed while suppressing the opening speed on a slope where the weight of the sliding door acts in the opening direction. It aims to improve operability by eliminating difficult operations.

[0005]

In order to achieve the above object, according to the present invention, the slide door is configured to be capable of opening and closing by a driving force transmitted from a motor via a drive transmission mechanism. In the middle of the drive transmission mechanism, a fastening state in which the motor and the slide door are connected,
A clutch for switching a motor and a sliding door to a disconnected state is provided, a control unit for controlling driving of the motor is provided, and the control unit includes a switch for switching between an automatic opening and closing mode and a manual opening and closing mode. Is provided, and 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 slide door,
In an automatic sliding door device configured to release a clutch when a changeover switch is set to a manual opening / closing mode, speed detection means for detecting an opening / closing sliding speed of the sliding door is provided, and the control unit includes a switching unit. When the manual opening / closing mode is selected by the switch, if the detected opening / closing slide speed exceeds a preset upper limit speed, the clutch is engaged to execute slide speed suppression control for suppressing the slide speed. It is characterized by being.

[0006] Also, as described in claim 2, claim 1
In the automatic sliding door device described in the above, the control unit may be configured to intermittently engage a clutch when executing the sliding speed suppression control.

Alternatively, according to the third aspect of the present invention, in the automatic sliding door device according to the first or second aspect, when the control unit executes the slide speed suppression control, the opening / closing slide speed of the slide door is reduced. The clutch may be released when the speed falls below a preset control suspension speed lower than the upper limit speed. According to a fourth aspect of the present invention, in the automatic sliding door device according to any one of the first to third aspects, the speed detecting means is provided between the clutch and the sliding door in the driving mechanism to open and close the sliding speed. May be configured to output a signal corresponding to

[0008]

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.

When the manual mode is selected as described above, when a sudden operation is performed, or when the 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. The speed may be faster than the set upper limit speed. In this case, the control unit executes the slide speed suppression control to engage the clutch. Therefore, the motor-side drive mechanism acts as a load on the opening / closing slide of the slide door, and the opening / closing slide speed is reduced. Therefore, even when the sliding door is manually opened and closed, the opening and closing sliding speed of the sliding door does not exceed a preset upper limit speed.

As described above, according to the present invention, the opening and closing sliding speed of the sliding door at the time of manual opening and closing can be suppressed below the upper limit speed, so that a loud noise or a shock is generated when the door is fully closed or fully opened. This prevents the opening and closing operation from being performed while suppressing the sliding speed, which accelerates due to the weight of the sliding door when parking on a slope, as well as having the effect that a good operation feeling can be obtained. It has the effect of improving the operability, and can reduce 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. In this case, it is possible to reduce the load limitation in the setting of (1) and prevent an increase in cost.

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 sense of incongruity that the opening / closing slide speed of the slide door suddenly decreases.

According to the third aspect of the present invention, the control unit releases the engagement of the clutch when the opening / closing slide speed of the slide door decreases to the control stop speed in the execution of the slide speed suppression control. Therefore, after the clutch is released, the clutch 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 to reduce the opening / closing slide speed again.

According to the fourth aspect of the present invention, the speed detecting means outputs a signal corresponding to the opening / closing slide speed, and the control unit controls the slide speed in response to an input from the speed detecting means. Execute control.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view showing a vehicle 1 including the automatic sliding door device according to the embodiment,
A side surface of the vehicle 1 is provided with an entrance / exit opening 2 and a step 3, and a slide door 4 for opening and closing the entrance / exit opening 2 is provided.

The sliding door 4 has an upper end portion on the front side of the vehicle, a lower end portion on the front side of the vehicle, a central portion on the rear side of the vehicle,
Is 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 slide door 4
The lower end of the front side of the vehicle is supported by a lower roller member 13 that moves along the side surface of the step 3, and the center portion of the slide door 4 on the rear side of the vehicle is supported by a rear roller member 14 that moves along the side surface of the vehicle body. ing.

As shown in FIG. 2, the upper portion of the lower roller member 13 of the slide door 4 is fixed to a traction member 18 extending from the side surface of the step 3, and the traction member 18 It is configured to slide back and forth by being performed.

In the step 3 where the traction member 18 is extended, as shown by a broken line in FIG.
1 and a drive transmission mechanism 21 for moving the slide door 4 via the traction member 18. 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 driving 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 drive 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 on the upper and lower portions of the electromagnetic clutch 28. The motor 31 is connected via the intermediate gear 29c and the worm gear reducer 30, the intermediate gear 29b and the final reduction gear 29a are connected, and the drive pulley 27 is provided coaxially with the final reduction gear 29a.

As shown in FIG. 3, the worm gear reducer 30 includes a multiple worm 33 provided on the rotating shaft of the motor 31 and a worm that meshes with the multiple worm 33 and meshes with the intermediate gear 29. And a wheel 34. Accordingly, when the electromagnetic clutch 28 is turned off and disconnected, the motor 31 and the gear on the motor 31 side
That is, the worm gear reducer 30, the intermediate gear 29d, the intermediate gear 29c, the drive pulley 27 and the drive pulley 27
Side gears, ie, final reduction gear 29a, intermediate gear 29
b is separated, 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 with the ON control, 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.

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 full open limit switch 41 detects that the slide door 4 has reached the full open position by detecting the support member 22 when the slide door 4 is moved to the full open position.

The second pulley 25 and the first pulley 2
4, an intermediate switch 42 is provided. In this position, the intermediate switch 42
Is detected, it is detected that the slide door 4 has reached an intermediate position between the fully open position and the fully closed position.

Although not shown in detail, a fully closed limit switch 43, which 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. 1). 4).

An encoder 4 having a disk which is coaxial with the driving pulley 27 and rotates by the rotation of the driving pulley 27.
4 are provided. 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.

The switches 41, 42, 43 and the encoder 44 are connected to the control unit 40. Further, as shown in FIG. 4, an ignition switch 51,
When the opening / closing operation switch 52, the main switch (switching switch) 53, the motor 31, and the electromagnetic clutch 28 are connected and the main switch 53 is turned on,
When the automatic opening / closing mode is set and the main switch 53 is not turned on, the manual opening / closing mode is set and the slide speed suppression control which is a feature of the present embodiment is executed.

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, if the main switch 53 is turned on (O) based on whether or not the main switch 53 is turned on (O),
If N (if N), the process proceeds to the automatic opening / closing mode of step 102 and below. 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.

In the automatic open / close mode, first, at step 102, it is determined whether or not the open / close operation switch 52 is ON. Execute speed control. 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, and includes an open switch / close switch. 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.

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 a preset assist set speed Vc. When the speed is higher than the assist set speed 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 in which the speed is faster than the assist set speed Vc is maintained longer than the set time T. When it is determined that the slide door 4 is about to be opened or closed, the slide door 4 is automatically slid in the sliding direction at a constant speed.

In the opening / closing control in the above-mentioned automatic opening / closing mode executed when the main switch 53 is turned on, normally, the electromagnetic clutch 28 is turned off.
When the state is set and the opening / closing constant speed control in step 105 or 106 is executed, the electromagnetic clutch 28 is engaged (ON) to drive the motor 31.

Next, a description will be given of the slide speed suppression control following step 107. First, in step 107, it is determined whether or not the slide opening / closing speed of the slide door 4 is faster than a preset upper limit speed VA. If the slide door 4 slides at a speed faster than VA, the process proceeds to step 108, where the electromagnetic clutch 28 is turned on.
As a conclusion. 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, where it is determined whether 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. By the way, the control suspension speed VB is
The speed is set lower than the upper limit speed VA to prevent chattering from occurring.

The engagement of the electromagnetic clutch in step 108 may be intermittent or complete. In the former case, the opening / closing sliding speed of the sliding door 4 is gradually reduced. On the other hand, in the latter case, the opening / closing sliding 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 actually decreases gradually in this case as well.

Next, the operation of the embodiment will be described. B) Automatically opening and closing the slide door 4 To automatically open and close 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 is opened.
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.

Alternatively, even if the opening / closing operation switch 52 is not operated, when the slide door 4 is manually opened and closed beyond a predetermined time T at a speed higher than the assist set speed Vc, the slide door 4 is automatically slid. The electromagnetic clutch 28 is engaged and the motor 31 is driven, so that the slide door 4 slides at a constant speed. B) When opening and closing the slide door 4 manually

When the slide door 4 is completely opened and closed 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 29
b, the intermediate gear 29c, the intermediate gear 29d, the worm gear reducer 30, and the motor 31 are disconnected from each other, and the intermediate gear 29c, the intermediate gear 29d, the worm gear reducer 30, and the motor 31 do not become a load. Thereby, the sliding door 4 can be opened and closed.
The final reduction gear 29a and the driving pulley 27 are coaxial, and the final reduction gear 29a has an overwhelmingly larger number of teeth than the intermediate gear 29b. Therefore, the force for rotating the intermediate gear 29a is small, and the force acting as a load for manual opening and closing of the two gears 29a and 29b is extremely small.

In the state of the manual opening / closing mode, when the vehicle is inclined and its own weight acts on the slide door 4 to increase the slide speed, or the violent operation is performed, the slide door 4 is operated. Is the upper limit speed V
When the slide is performed at a speed higher than A, 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
The motor 31 acts as a load on the sliding door 4 to reduce the opening / closing sliding speed. Thereafter, when the opening / closing slide speed becomes lower than the control suspension speed VB due to the deceleration,
Since the engagement of the electromagnetic clutch 28 is released (step 1
01 → 107 → 109 → 110), and the opening and closing can be continued again by the force of the human hand.

As described above, in this 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. Since the door is not opened and closed at a speed exceeding a predetermined upper limit speed VA, a fully open checker (not shown) for holding the slide door 4 at a full open position with a predetermined holding force at the time of full opening or full closing, A latch (not shown) for locking the door 4 in a fully closed state,
When the slide door 4 is fully closed, the maximum input to a power supply terminal (not shown) connected between the vehicle body side and the slide door side can be reduced, so that the effect of reducing the cost of these parts can be obtained and noise can be obtained. And generation of vibration can be suppressed. Further, even when the self-weight of the slide door 4 is acting in the sliding direction on a steep slope, the slide door 4 does not slide at a speed exceeding the operation speed of a person.
Will not be opened and closed while holding down the sliding door 4 that is accelerating. Therefore, the operation feeling can be improved.

In this embodiment, the drive transmission mechanism 2
Since the worm gear reducer 30 is used as 1, when the electromagnetic clutch 28 is engaged and the motor 31 is not driven, the load on the sliding door 4 is large, and it is ensured that the opening and closing sliding speed of the sliding door 4 is reduced. Can be performed.

Although the embodiment has been described with reference to the drawings, the present invention is not limited to this. For example, in the embodiment, a sliding door is used as speed detecting means for detecting the opening / closing sliding speed of the sliding door 4. 4. An encoder 44 that outputs a pulse corresponding to the opening / closing slide speed
However, the present invention is not limited to this. For example, a unit that outputs a signal of a pulse width corresponding to the opening and closing slide, a unit that detects the moving distance of the sliding door 4 and a unit that detects the passage of time, and the like may be used. Many means may be used.

Although the belt 23 is shown as a means for transmitting the drive torque of the drive 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 according to 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 Entry / exit 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 Multi-start 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

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiro Inaba 10-1 Amanuma, Hiratsuka-shi, Kanagawa F-term in Nissan Shatai Co., Ltd. (reference) 2E052 AA09 CA06 DA01 DA03 DA04 DA08 DB01 DB03 DB04 DB08 EA16 EB01 EC01 GA00 GA03 GA05 GA10 GB12 GB13 GB15 GC02 GC06 GD03 GD07 GD08 KA10 KA13 KA15 KA16 KA25 LA09

Claims (4)

[Claims] 1. A 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 fastening state in which the motor and the slide door are connected. And a clutch for switching between a motor and a slide door to be released from a disconnected state. A control unit for controlling driving of the motor is provided. The control unit switches between an automatic opening and closing mode and a manual opening and closing mode. A changeover switch is provided, and when the changeover switch is set to the automatic opening / closing mode, the slide door is automatically opened / closed and slid by driving the motor in a clutch engaged state as necessary based on an input from the input means. The clutch is configured to release when the switch is set to manual open / close mode. In the automatic sliding door device, a speed detecting means for detecting an opening / closing sliding speed of the sliding door is provided, and the control unit detects the opening / closing slide detected when a manual opening / closing mode is selected by a changeover switch. When the speed exceeds a preset upper limit speed, an automatic slide door device is configured to execute a slide speed suppression control for engaging a clutch to suppress a slide speed. 2. The automatic sliding door device according to claim 1, wherein the control unit is configured to intermittently engage a clutch when executing the sliding speed suppression control. 3. The control unit, when executing the slide speed suppression control, releases the clutch when the opening / closing slide speed of the slide door is lower than a preset control stop speed lower than the upper limit speed. The automatic sliding door device according to claim 1, wherein the automatic sliding door device is configured. 4. The apparatus according to claim 1, wherein the speed detecting means is provided between the clutch and the sliding door in the driving mechanism, and is configured to output a signal corresponding to the opening / closing sliding speed. 4. The automatic sliding door device according to any one of 1 to 3.