JPH10266691A - Automatic sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability by applying a regenerative brake to a motor when opening-closing operation is stopped in the middle, and releasing the regenerative brake by interlocking with manual opening closing operation. SOLUTION: A control means is composed of an operation means to apply a regenerative brake to a motor in a condition where opening-closing operation of a door is stopped in the middle and a means to release the regenerative brake by interlocking with manual opening-closing operation of the door. When the door is stopped in the middle by turning on an operation switch during automatic opening-closing operation of the door on a steep slope, a release means is turned on in an OFF condition of a handle switch and a motor driving circuit is closed, and the motor is put on dynamic braking, and the regenerative brake is applied and prevents a sudden slide down of a door by dead weight. When a door handle is pulled for manual opening-closing in this condition, the handle switch is turned on, a release means circuit is turned off by interlocking with this, and a motor driving circuit is opened. Since the dynamic braking of the motor is released, the motor can freely rotate, and manual operation force is reduced. Therefore, safety and convenience in use can be improved.

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 opening and closing a sliding door of a vehicle or the like by forward / reverse rotation of a motor, and more particularly to a manual operation when a sliding door being opened and closed on a steep slope is stopped halfway. The present invention relates to a technique which is effective when applied to an automatic sliding door device suitable for control by a computer.

[0002]

2. Description of the Related Art For example, as a technique studied by the inventor, in an automatic sliding door device for opening and closing a sliding door of a vehicle or the like by forward / reverse rotation of a motor, the sliding door is fixed to a substantially central portion of a wire, and Both ends of the wire are fixed to the winding drum.For example, the operation switch provided in the driver's seat or the like rotates the motor to which the winding drum is fixed in the normal direction and winds one end of the wire to open the sliding door. A drive mechanism or the like is conceivable in which the slide door is operated in a direction in which the slide door is closed by operating the motor and, conversely, reversing the motor to wind up the other end of the wire.

In such an automatic sliding door apparatus which automatically opens and closes the sliding door by operating an operation switch, the opening and closing speed of the sliding door is determined by the power supply to a battery which supplies power when the motor is rotated forward / reversely. In order to adjust the opening / closing speed of the slide door, for example, a method of adjusting the opening / closing speed of the slide door by PWM (Pulse Width Modulation) control of a pulse signal for energizing the battery to the motor is generally used. I have.

Further, as a technique relating to such a sliding door opening / closing device, for example, techniques described in Japanese Patent Publication No. 7-8159 and Japanese Utility Model Publication No. 7-47585 are mentioned. When the motor opens and closes smoothly in three stages by rotating the motor at high speed, braking operation, and low speed, it is a technology that automatically adjusts the braking operation appropriately according to the weight of the door. This is a technology that enables the door to be opened automatically by operating a switch, and also to be opened and closed manually.

[0005]

In the technique of adjusting the opening / closing speed of the slide door by the PWM control as described above, for example, when the vehicle is stopped on a steep uphill or downhill, the opening / closing operation is performed. When the regenerative brake is not applied to the motor when the slide door is stopped halfway, the slide door slides down by its own weight, so that the slide door cannot be stopped halfway, which is inconvenient and dangerous.

In particular, in a clutchless mechanism system,
Since the sliding door and the motor mechanism are always interlocked, it is necessary to reduce the friction of the motor in order to reduce the manual operation force for ease of use. The slipping speed becomes faster, and when the regenerative brake is applied to the motor with the motor stopped halfway, when the motor is opened and closed again manually, the operation becomes heavy and the usability is poor.

Further, Japanese Patent Publication No. 7-8159 described above,
The technology relating to the sliding door opening / closing device described in Japanese Utility Model Publication No. 7-47585 does not take into account that the sliding door slides down in a steep slope due to its own weight, and in any case, the sliding door opens and closes on a steep slope. It is not intended for control by manual operation when the operating sliding door is stopped halfway, and with such a sliding door opening / closing device, the sliding door is always easy to use without being affected by the stop position of the vehicle. It is desired to be able to open and close by manual operation.

Accordingly, an object of the present invention is to release the regenerative brake of the motor in conjunction with the manual opening / closing operation of the sliding door from the partially stopped state when the sliding door being opened / closed on a steep slope is stopped halfway. In addition, the present invention provides an automatic sliding door device suitable for a clutchless mechanism system in which the sliding door can be easily opened and closed manually by improving the usability of the sliding door, and in particular, the sliding door and the motor mechanism are always in an interlocked state. Is to do.

The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0010]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

That is, the automatic sliding door device of the present invention is applied to an automatic sliding door device that opens and closes a sliding door by forward / reverse rotation of a motor.
An operation means for stopping the opening / closing operation of the slide door halfway, applying a regenerative brake to the motor in the halfway stop state, and releasing the regenerative brake in conjunction with a manual opening / closing operation of the slide door in the regenerative brake state of the motor. Release means.

Therefore, when the opening / closing operation of the slide door is stopped halfway by the operating means on a steep slope, the regenerative brake is applied to the motor to prevent the slide door from sliding down suddenly by its own weight, and furthermore, the slide door is stopped halfway. When opening and closing manually, the regenerative brake of the motor can be released by the release means in conjunction with this operation, and the motor can be set to the free state. Usability can be improved.

In particular, in a clutchless mechanism system in which the slide door and the motor mechanism are always interlocked, the usability of the slide door can be improved.
This usability can reduce the manual operation force from the stoppage of the slide door only when the user has intention to manually open and close the slide door again,
The regenerative brake can be released by, for example, releasing the regenerative brake only when the handle of the slide door is once pulled or when the handle is kept being pulled.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is a timing chart showing a control operation of a motor drive circuit used in an automatic sliding door device according to Embodiment 1 of the present invention, and FIG. 2 is a motor drive in Embodiment 1 of the present invention. It is a circuit diagram showing a circuit.

First, a control operation realizing means of a motor drive circuit used in the automatic sliding door device according to the first embodiment will be described with reference to FIG.

The control operation realizing means of the motor drive circuit according to the first embodiment is applied to, for example, an automatic slide door device which opens and closes a slide door of a vehicle such as an automobile by forward / reverse rotation of a motor. Operating means for applying a regenerative brake to the motor while the motor is stopped halfway, and releasing means for releasing the regenerative brake in conjunction with the manual opening and closing operation of the slide door in the regenerative braking state of the motor. The operating means and the releasing means are electrically connected to a motor for opening and closing the slide door.

The operating means is, for example, a seesaw type push button switch provided near the driver's seat, near the entrance of the sliding door, or both, and when the opening side or the closing side is pressed, the sliding door is completely opened. It can be automatically opened and closed until it becomes a state or a closed state, and during this opening and closing operation, for example, by pressing the open side or the closed side again, the opening and closing of the slide door can be stopped halfway,
In this halfway stop state, regenerative braking is applied to the motor.

The release means comprises, for example, a transistor circuit which is controlled indirectly in conjunction with a handle switch provided on a handle portion of the slide door, and is linked to the manual operation when the slide door is manually opened / closed. By temporarily pulling the handle and controlling the release means in conjunction with this, it is possible to release the regenerative brake applied to the motor in the middle stop state.

The operating means and the canceling means for realizing the above control operation are constituted as circuit elements of a motor drive circuit as shown in FIG. 2, for example. This motor drive circuit includes two microcomputers IC1 and IC2, four MOS type N-channel FETs T1 to T4, a plurality of NPs.
N-type or PNP-type transistors T5 to T17, etc., and the releasing means are transistors T10 to T13,
It comprises a transistor circuit consisting of T14 to T17.

The input signals to the microcomputer IC1 include a door open signal SI1 / close signal SI2 by switching the operation switch S1 (operation means), a door full open signal SI3 by detection of the full open switch S2, and a full close switch S3. , A release signal SI5 by a handle switch S4 for indirectly controlling the release means, and the like, and control the microcomputer IC1 and the microcomputer IC2 based on these input signals. This microcomputer IC
Control signals O1 to O4 for controlling the respective FETs T1 to T4 are output as output signals from 2 in order to rotate the motor M forward / reverse.

In addition, a control signal SO3 for controlling the motor M to the regenerative braking state / free state is output as an output signal from the microcomputer IC1, and after input of the open signal SI1 / close signal SI2 by the operation switch S1,
Before the fully open signal SI3 from the fully open switch S2 or the fully closed signal SI4 from the fully closed switch S3 is input, the open signal SI1 / close signal SI from the operation switch S1 is again input.
2 is input, the control signal SO3 is set to a high level to put the motor M in the regenerative braking state, and the release of the regenerative braking state is controlled in conjunction with the input of the release signal SI5 by the handle switch S4. The signal SO3 is set to a low level, and the transistors T10 to T13, T14 to T
17 can be performed by controlling the transistor circuit.

The control operation realizing means of the motor drive circuit configured as described above is used, for example, in an automatic sliding door device of a vehicle such as an automobile, and a sliding door disposed on a side surface of a vehicle body so as to be openable and closable has a wire. The motor M, to which the winding drum is fixed, is rotated in the normal direction by an operation switch S1 provided at the driver's seat or the like, and the motor M is fixed at substantially the center and both ends of the wire are fixed to the winding drum. By winding one end, the sliding door can be automatically operated in the opening direction, and conversely, by rotating the motor M in the reverse direction and winding the other end of the wire, the sliding door can be automatically operated in the closing direction.

In addition to the automatic operation by the operation switch S1, it is also possible to manually open and close the slide door from the inside or outside of the vehicle body. It can be opened by moving it slightly parallel to the outside and then moving it rearward in parallel with the side of the car body.On the contrary, when closing the slide door manually, opposite to the operation when opening the slide door, After being moved forward in parallel, the vehicle can be closed by slightly translating it inward from the outside of the vehicle body.

Further, a motor drive circuit controlled by the control operation realizing means is built in the control device of the automatic sliding door device. The control device includes a battery as a power source, a motor M, and a fully open switch S2. And a fully-closed switch S3 is connected. For example, when the sliding door is opened by the forward rotation of the motor M, the open state is detected by the fully-open switch S2, and when the sliding door is closed by the reverse rotation of the motor M, The closed state can be detected by the fully closed switch S3.

Further, in this automatic sliding door device, the above-mentioned handle switch S4 is provided at the handle portion of the sliding door. In particular, when the sliding door is manually opened and closed from the regenerative braking state, it is interlocked with this manual operation. By temporarily pulling the handle and controlling the transistor circuit composed of the transistors T10 to T13 and T14 to T17 in conjunction with the handle, the regenerative brake applied to the motor M can be released in the middle stop state. I have.

Next, regarding the operation of the first embodiment, the basic operation of opening and closing the slide door by forward or reverse rotation of the motor M will be described first.

For example, in the case of a vehicle in which the motor M rotates forward when the sliding door is opened, a current from the power source side by a battery is supplied to the motor M from a terminal in the forward direction to ground. Let it flow to the side. That is, FETT1 and FETT4 of the motor drive circuit are
Set to N state. Thereby, the motor M is energized and rotates in the normal rotation direction, so that, for example, a closed slide door can be opened.

On the other hand, when the opened slide door is closed, the current from the power source side by the battery is supplied to the motor M from the terminal in the reverse direction to flow to the ground side. That is, the FET of the motor drive circuit
T2 and FET T3 are turned on. As a result, the motor M is energized and rotates in the reverse direction, thereby closing the opened slide door.

In the opening / closing operation of the slide door as described above, the opening / closing speed can be controlled by PWM control. That is, by arbitrarily setting the high-level or low-level pulse width of the pulse signal, for example, by increasing the high-level pulse width, the rotational speed of the motor M during forward or reverse rotation is increased, and By increasing the opening / closing speed and increasing the low-level pulse width, the number of rotations of the motor M at the time of forward rotation or reverse rotation can be reduced, and the opening / closing speed of the sliding door can be reduced.

Incidentally, the PWM of the motor M as described above
Also in the control, when the sliding door during the opening and closing operation is stopped halfway while the vehicle is stopped on a steep slope, the sliding door slides down by its own weight unless the regenerative brake is applied to the motor M. Therefore, it cannot be stopped halfway, which is inconvenient and dangerous.

Therefore, in the first embodiment, when the opening / closing operation of the slide door is stopped halfway on a steep slope, the regenerative brake is applied to the motor M to prevent the slide door from slipping down suddenly by its own weight. When the door is manually opened / closed, the regenerative brake of the motor M is released in conjunction with this operation, and the manual operation force of the opening / closing operation can be reduced by setting the motor M to a free state. Hereinafter, a specific description will be given based on the timing chart of FIG.

For example, while the sliding door is being opened and closed on a steep slope, the slide door can be stopped halfway by turning on the operation switch S1. In this halfway stop state, when the handle switch S4 is in the OFF state, the transistor circuit of the release means is in the ON state, the drive circuit of the motor M is closed, and the motor M is in the power generation braking operation. Becomes

That is, when the high-level control signal SO3 is output from the microcomputer IC1 and the transistor circuit of the releasing means is turned on, the transistor circuit composed of the transistors T10 to T13, FE
TT3, motor M, FET T4, transistor T14 ~
The motor M can be brought into the regenerative braking state by closing the transistor circuit composed of T17. Therefore,
The sliding door does not slide down suddenly under its own weight even on steep slopes.

From this state, for example, the user's will works, and the operation of pulling the handle of the slide door once to manually open and close the slide door, that is, pulling the handle turns the handle switch S4 ON and interlocks with this. Then, the transistor circuit of the release unit is turned off. In this state, the drive circuit of the motor M becomes an open circuit, and the motor M does not perform the power generation braking operation, so that the motor M is in a free state in which it can rotate freely.

That is, when the low-level control signal SO3 is output from the microcomputer IC1 and the transistor circuit of the releasing means is turned off, the transistor circuit composed of the transistors T10 to T13, F
ETT3, motor M, FETT4, transistor T14
The motor M can be brought into a free state by opening the transistor circuit consisting of T17. Therefore, the manual operation force after the slide door stops halfway is reduced, and the user can easily open and close the slide door manually.

As described above, even when the slide door is prevented from suddenly slipping under its own weight even when the slide door is stopped halfway on a steep slope, and when the slide door is manually opened / closed, the motor M is free from the regenerative braking state. In this state, the manual operation force is reduced, and the manual opening and closing operation of the slide door based on the user's intention can be easily performed.

Therefore, according to the motor drive circuit of the first embodiment, the operation switch S1 for applying the regenerative brake to the motor M when the opening / closing operation of the slide door is stopped halfway.
And a transistor circuit that releases the regenerative brake of the motor M in conjunction with the handle switch S4 for manually opening and closing the slide door,
When the opening / closing operation of the slide door is stopped halfway by the operation switch S1 on a steep slope, the regenerative brake is applied to the motor M to prevent the slide door from slipping down suddenly by its own weight, and when the slide door is manually opened / closed. To
In conjunction with this operation, the regenerative brake of the motor M can be released by the transistor circuit and the motor M can be set in the free state, so that the manual operation force of the opening and closing operation can be reduced and the usability of the slide door can be improved. .

Particularly, in a system of a clutchless mechanism in which the sliding door and the mechanism of the motor M are always interlocked, the friction of the motor M is set to be reduced to reduce the manual operation force for the sake of convenience. Even when the regenerative brake is applied to the motor M at a stop halfway, the usability of the slide door is improved in the middle stop and the manual operation from the middle stop in consideration of the sliding speed of the slide door in the downward direction on a steep slope. Can be.

(Embodiment 2) FIG. 3 is a timing chart showing a control operation of a motor drive circuit used in an automatic sliding door device according to Embodiment 2 of the present invention.

The control operation realizing means of the motor drive circuit according to the second embodiment is applied to an automatic slide door device which opens and closes a slide door of a vehicle such as an automobile by forward / reverse rotation of a motor as in the first embodiment. However, the difference from the first embodiment is that in the manual opening / closing operation after the slide door is stopped halfway, the regenerative brake of the motor is released only while the handle of the slide door is being pulled. .

That is, in the second embodiment, as shown in FIG. 3, for example, by turning on the operation switch S1 (operation means) while the slide door is opening and closing on a steep slope, the slide door is moved halfway. Can be stopped. In this halfway stop state, the steering wheel switch S4
In the FF state, the transistor circuit of the release means is turned on, the drive circuit of the motor M is closed, and the motor M is in the power generation braking operation, so that the motor M is in the regenerative braking state. Therefore, the sliding door does not slip down suddenly by its own weight even on a steep slope.

From this state, for example, the user's intention is activated, and the handle switch S4 is turned ON only while the handle of the slide door is being pulled to open and close the slide door manually, that is, while the handle is being pulled. In conjunction with this, the transistor circuit of the release means is turned off. In this state, the drive circuit of the motor M becomes an open circuit, and the motor M does not perform the power generation braking operation, so that the motor M is in a free state in which it can rotate freely. Therefore, the manual operation force after the slide door stops halfway is reduced, and the user can easily open and close the slide door manually.

As described above, even when the slide door is stopped halfway on a steep slope, it is possible to prevent the slide door from suddenly slipping under its own weight, and to manually open and close the slide door, only when the steering wheel is being pulled. Release means OFF
In this state, the motor M is changed from the regenerative braking state to the free state, the manual operation force is reduced, and the manual opening / closing operation of the slide door based on the user's intention can be easily performed.

Therefore, according to the motor drive circuit of the second embodiment, the same operation switch S1 as that of the first embodiment is used.
When the opening / closing operation of the sliding door is stopped halfway by the operation switch S1 on a steep slope, the regenerative brake is applied to the motor M to cause the sliding door to lose its own weight. When the sliding door is prevented from suddenly falling and when the sliding door is manually opened / closed, the regenerative brake of the motor M is turned on by the handle switch S4 in conjunction with this operation.
Since the motor M can be released by the transistor circuit only during the N state, the manual operation force of the opening / closing operation can be reduced and the usability of the slide door can be improved similarly to the first embodiment. Can be.

Particularly, in the second embodiment, as compared with the first embodiment, the handle switch S4 is turned ON and the motor M is set in the free state only while the handle of the sliding door is being pulled. For example, if the handle is released before the slide door is completely opened or closed, the handle switch S4 is turned off at the time when the handle is released as shown by a dashed line in FIG. The motor M can be brought into the regenerative braking state again at the separated position and stopped halfway at a different position.

Although the invention made by the present inventor has been specifically described based on the first and second embodiments of the present invention, the present invention is not limited to the above embodiment and does not depart from the gist of the invention. It goes without saying that various changes can be made within the range.

For example, in the motor drive circuit of the above-described embodiment, the case where the release means controlled in conjunction with the handle switch is constituted by a transistor circuit composed of a plurality of transistors has been described. The present invention is not limited to the form, and can be widely applied to a case where a mechanical contact such as a relay is used, or a case where a release unit having another circuit configuration is used.

Although the case where the handle switch is provided on the handle portion of the slide door has been described, the present invention is also applicable to a case where the handle switch is provided near the slide door which can be operated in conjunction with the slide door.

In the above description, the case where the invention made mainly by the present inventor is applied to an automatic sliding door device used in a vehicle such as an automobile, which is a technical field to which the invention belongs, has been described. However, the present invention is not limited to this. Instead, the present invention can be widely applied to other vehicles such as a train, and to a general device that opens and closes a slide door by forward / reverse rotation of a motor.

[0051]

Advantageous effects obtained by typical ones of the inventions disclosed in the present application will be briefly described.
It is as follows.

(1) Operating means for applying a regenerative brake to the motor in a state where the opening / closing operation of the slide door is stopped halfway,
In a regenerative braking state of the motor, a release means for releasing the regenerative brake in conjunction with a manual opening / closing operation of the slide door is provided. When the sliding door is opened and closed manually by the self-weight, and when the sliding door is manually opened and closed from the partially stopped state, the manual operation force of the opening and closing operation can be reduced in conjunction with this operation. Can be improved.

(2) Even in a system of a clutchless mechanism in which the slide door and the motor mechanism are always interlocked, the friction of the motor is set to be reduced in order to reduce the manual operation force for ease of use. In this case, in consideration of the case where the regenerative brake is applied to the motor in the middle stop, the usability of the slide door in the middle stop and the manual operation from the middle stop can be improved.

(3) In the manual operation after the slide door is stopped halfway, if the motor is set to the free state only when the release means is in the ON state, the time of the ON state by the release means , The slide door can be stopped again at a different position.

[Brief description of the drawings]

FIG. 1 is a timing chart showing a control operation of a motor drive circuit used in the automatic sliding door device according to the first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a motor drive circuit according to the first embodiment of the present invention.

FIG. 3 is a timing chart showing a control operation of a motor drive circuit used in the automatic sliding door device according to the second embodiment of the present invention.

[Explanation of symbols]

 IC1, IC2 Microcomputer T1 to T4 FET T5 to T9 Transistor T10 to T17 Transistor (release means) S1 Operation switch (operation means) S2 Fully open switch S3 Fully close switch S4 Handle switch M Motor

Claims (1)

[Claims] 1. An automatic sliding door device for opening and closing a slide door by forward / reverse rotation of a motor, wherein the opening and closing operation of the slide door is stopped halfway, and a regenerative brake is applied to the motor in the halfway stopped state. Means for releasing the regenerative brake in conjunction with a manual opening / closing operation of the slide door in a state of regenerative braking of the motor by the operating means. The release means stops the slide door halfway. Wherein the regenerative brake is released to put the motor in a free state, and the slide door is manually opened and closed.