JP3851117B2 - Automatic opening and closing device for vehicle door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, the driving force of a driving source such as a motor is transmitted to the door, such as sliding door via the clutch mechanism, an automatic opening and closing device for a vehicle door for opening and closing movement of the door.
[0002]
[Prior art]
An automatic opening / closing device for a vehicle opening / closing body is known in which a sliding door (opening / closing body) attached to a side surface of a vehicle body so as to be slidable in the front-rear direction is opened and closed by a driving source such as a motor. (See Kaihei 10-212867). In this apparatus, when a user consciously operates a switch provided near a driver's seat or a door handle, a drive source is activated via a controller, and a slide door is automatically opened and closed.
[0003]
In addition, this device controls the transmission maintaining force of the clutch mechanism interposed between the drive source and the slide door with a controller so that the slide door does not start when the vehicle stops on a slope or is manually operated. It is held so that it can be opened and closed.
[0004]
However, in such control by the controller, if the battery that supplies power to the controller deteriorates, the controller may stop operating. When the controller stops operating, the clutch mechanism is turned off (disconnected), and when the vehicle is stopped on a slope, the slide door may be suddenly closed or opened suddenly by its own weight.
[0005]
For this reason, conventionally, a control circuit is provided that forcibly connects the clutch mechanism by supplying the power supply voltage directly to the clutch mechanism when the power supply voltage supplied to the controller decreases. Therefore, even when the power supply voltage is lowered, the clutch mechanism is kept connected, and sudden closing / opening due to the weight of the sliding door is prevented.
[0006]
[Problems to be solved by the invention]
However, such a conventional technique has a structure in which the clutch mechanism is forcibly maintained when the power supply voltage is lowered, so that the power supply voltage is recovered thereafter, or a fuse or Unless the battery is removed and the current supply to the clutch mechanism is stopped, the sliding door cannot be moved manually, which is inconvenient.
[0007]
The present invention has been made by paying attention to such a conventional technique, and has a clutch connection holding function for preventing sudden closing / opening due to a decrease in power supply voltage, and also manually operating an opening / closing door . It is an object of the present invention to provide a highly convenient automatic opening / closing device for a vehicle door .
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided an opening / closing door that is opened and closed by an opening / closing movement mechanism provided on a vehicle body, a clutch mechanism that intermittently transmits power of a drive source to the opening / closing movement mechanism, and a controller that controls the clutch mechanism intermittently. When, along with connecting the clutch mechanism during drop in the power supply voltage supplied to the controller, the door open door, by operating at least one switch for operating the closing or switching of the automatic / manual opening and closing, And a control circuit for releasing the connection of the clutch mechanism when the power supply voltage drops.
[0009]
According to the first aspect of the present invention, when the power supply voltage is lowered, the clutch mechanism is connected to prevent the door from being suddenly closed / opened, and the door is opened / closed or automatically / manually opened / closed. Since the connection of the clutch mechanism can be released by operating at least one of the switches for operating the switching, it is possible to manually operate the open / close door , and the convenience is improved.
[0010]
According to a second aspect of the invention, the control circuit includes a NAND circuit which the door open door, closing, or at least from one of the output signal of the switch for operating the automatic / manual switching of opening and closing is input, NAND circuit The NOR circuit to which the output signal from the controller and the CPU output signal from the controller are input, the OR circuit to which the output signal from the NOR circuit and the clutch output signal from the controller are input, and the output signal from the OR circuit are input And a clutch drive element.
[0011]
According to the second aspect of the present invention, the control circuit can be formed with a simple configuration using a NAND circuit, a NOR circuit, an OR circuit, and a clutch drive element.
[0012]
According to a third aspect of the present invention, the open / close door is a slide door that is opened and closed along a guide track provided on the vehicle body.
[0013]
According to the invention described in claim 3, since the opening / closing door is a sliding door that is liable to cause inconvenience due to sudden closing / opening, the present invention is compared with other opening / closing doors (side door, back door, trunk, etc.). Great effect when applied.
[0014]
According to a fourth aspect of the present invention, the switches for operating the slide door are a manual operation changeover switch, an open / inside handle opening switch, and an out / inside handle closing switch.
[0015]
According to the fourth aspect of the present invention, the switch for operating the open / close door is a manual operation changeover switch, an out / inside handle opening switch, and an out / inside handle closing switch. Even if you do not know the function of the present invention, you can release the clutch mechanism of the sliding door that is locked when the power supply voltage is reduced. Can be operated.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS.
[0017]
FIG. 1 is an external perspective view showing an example of a vehicle, for example, an automobile, to which an automatic opening / closing device according to the present invention is applied. A slide door 2 as an “opening / closing body” is provided behind the front side door 1 of the vehicle body. The slide door 2 can be slid in the front-rear direction in order to open and close the door opening 3 formed on the side portion of the vehicle body. The upper and lower ends of the slide door 2 are connected to upper and lower track portions (not shown) provided above and below the door opening 3 so as to be slidable back and forth, and the center portion is fixed near the rear waist portion of the vehicle body. The truck 4 is slidably engaged and guided, and is mounted so as to move from a fully closed position where the door opening 3 is sealed to a fully open position where the door opening 3 is fully opened.
[0018]
Furthermore, an outside handle 5 for manually opening and closing is attached to the outer surface of the slide door 2. When the outside handle 5 is tilted to the rear side, the opening switch S4 (see FIG. 2) is turned on, and when the outside handle 5 is tilted to the front side, the closing switch S5 is turned on. Inside the sliding door 2, an inside handle (not shown) is also provided. When the inside handle is also tilted to the rear side, the opening switch S4 is turned on. When the inside handle is tilted to the front side, the closing switch S5 is turned on. .
[0019]
An endless loop cable (not shown) that is moved by driving by a motor (drive source) 7 is arranged in a guide track 5 provided on the side of the vehicle body, and a slide door 2 is connected to a part of the cable. Has been. In this embodiment, the “open / close moving mechanism” is constituted by the guide track 4, the cable, and the like.
[0020]
An electromagnetic clutch mechanism 8 is provided between the motor 7 and the cable. By automatically disconnecting and connecting the cable and the slide door 2 with the clutch mechanism 8, the automatic opening / closing and manual operation of the slide door 2 are performed. Switching between opening and closing.
[0021]
Next, FIG. 2 is a block diagram showing an extracted slide door control device 9 of the clutch mechanism 8 which is a main part of the present invention. In the figure, a sliding door control device 9 has a controller 10 having a microcomputer inside, and repeatedly performs control at regular time intervals.
[0022]
Further, the slide door control device 9 has a power supply monitoring circuit 11, which receives a power supply voltage from the battery 12 and generates a power supply voltage to be supplied to the controller 10, and also outputs an output voltage of the battery 12. Has a function of monitoring.
[0023]
That is, when the power supply monitoring circuit 11 detects that the output voltage of the battery 12 has dropped below a certain value, it outputs a reset signal to the reset terminal of the controller 10 and stops the operation of the controller 10. This is because the microcomputer constituting the controller 10 may run away when the battery voltage becomes lower than the rated voltage. The rated voltage varies depending on the type of microcomputer and voltage drop in the power supply circuit, but is reset when the battery voltage is around 6.5 volts (about 4 volts as the voltage to the microcomputer itself).
[0024]
Various switches S1 to S5 are connected to the controller 10 via an interface (I / F). When the manual operation changeover switch S1 is ON, the clutch mechanism 8 is disengaged and the manual open / close mode is set. The manual operation change-over switch S1 is normally OFF and is in a state where the clutch mechanism 8 is connected, so that the slide door 2 can be automatically opened and closed.
[0025]
The door open switch S2 and the door close switch S3 are operated when the manual operation changeover switch S1 is OFF and in the automatic opening / closing mode. When the door open switch S2 is ON, the slide door 2 is opened. When the door close switch S3 is ON, the slide door 2 automatically moves in the closing direction.
[0026]
As described above, the opening switch S4 and the closing switch S5 are turned on when the outside handle 5 (or inside handle) is tilted to the rear side, and the opening switch S4 is turned on when the outside handle 5 is tilted to the front side. It becomes ON. The opening switch S4 and the closing switch S5 are effective when the manual operation change-over switch S1 is OFF and in the manual opening / closing mode.
[0027]
And the above-mentioned motor 7 is connected to the controller 10 via the motor control relay 13, and the rotation direction of the motor 7 is determined according to the output signal from said various switches S1-S5.
[0028]
In addition, a foreign matter sensor 14 is connected to the controller 10 via an interface (I / F). That is, the slide door 2 is provided with a closure motor (not shown) for tightening the slide door 2 from just before the half latch to the fully latched state, in addition to the motor 7 for automatic opening and closing. If a foreign object is caught between the slide door 2 and the door opening 3 immediately before this half latch until the full latch state, the state is detected by the foreign object sensor 14 and the closure motor (not shown) is reversed. The slide door 2 is prevented from being damaged.
[0029]
The clutch mechanism 8 is connected to the clutch mechanism 8 via the control circuit 15. The control circuit 15 includes a NAND circuit 16, a NOR circuit 17, an OR circuit 18, and a clutch mechanism 8. Among the various switches S1 to S5, the NAND circuit 16 receives ON signals of the manual operation changeover switch S1, the opening switch S4, and the closing switch S5 related to the manual operation.
[0030]
The NOR circuit 17 receives an output from the NAND circuit 16 and an A signal related to the CPU output from the controller 10. An output signal from the NOR circuit 17 and a B signal related to the clutch output from the controller 10 are input to the OR circuit 18. An output signal from the OR circuit 18 is input to the clutch drive element 19.
[0031]
Next, the operation of the sliding door control device 9 will be described with reference to FIGS. 3 to 5 in which only the main part of the present invention is extracted from FIG.
[0032]
Maintaining clutch mechanism connection at normal power supply voltage (Fig. 3):
Normally, since the slide door 2 is automatically opened and closed, the automatic manual operation changeover switch S1 is in an OFF state. The opening switch S4 and the closing switch S5 for manual operation are also in the OFF state. Accordingly, an H signal is input to the NAND circuit 16 from each of the switches S 1, S 4, and S 5, and an L signal is output from the NAND circuit 16 to the NOR circuit 17.
[0033]
The A signal related to the CPU output output to the NOR circuit 17 outputs an H signal when the power supply voltage is normal. Therefore, the L signal is output from the NOR circuit 17. Further, when the power supply voltage is normal, the B signal related to the clutch output also outputs the H signal. Therefore, the L signal from the NOR circuit 17 and the H signal from the controller 10 are input to the OR circuit 18, and the H signal is output from the OR circuit 18. When the H signal is input from the OR circuit 18 to the clutch drive element 19, the connection state of the clutch mechanism 8 is maintained.
[0034]
Maintaining clutch mechanism connection due to power supply voltage drop (Fig. 4):
When the power supply voltage decreases from the state of FIG. 3, the A signal related to the CPU output from the controller 10 changes to the L signal. Therefore, the H signal is output from the NOR circuit 17 to the OR circuit 18, but the other B signal input to the OR circuit 18 is also changed to the L signal due to a decrease in the power supply voltage. An H signal is output from 18 to maintain the clutch mechanism 8 in the connected state.
[0035]
Disengagement state of clutch mechanism by manual switch operation (Fig. 5):
When at least one of the manual switches S1, S4, S5 (in this embodiment, the manual operation changeover switch S1) is turned on from the state of FIG. 4, the H signal is output from the NAND circuit 16, thereby the NOR circuit 17 Since the L signal is output from the OR circuit 18, the L signal is output from the OR circuit 18, and the clutch mechanism 8 can be disconnected. Therefore, the slide door 2 can be moved freely, which is convenient.
[0036]
The switches for releasing the connected state of the clutch mechanism 8 are a manual operation changeover switch S1, an open / inside handle opening switch S4, and an out / inside handle closing switch S5. Since it is operated when trying to move, even a person who does not know the function of the present invention naturally releases the clutch mechanism 8 of the sliding door 2 that is locked when the power supply voltage is lowered, and manually operates the sliding door 2. Can be operated with.
[0037]
【The invention's effect】
According to the present invention, when the power supply voltage is lowered, the clutch mechanism is connected to prevent the door from being suddenly closed / opened, and the door is opened / closed, or automatic / manual switching between opening / closing is operated. Since the connection of the clutch mechanism can be released by operating at least one of the switches to perform, manual operation of the open / close door is possible, and convenience is improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing an example of an automobile to which an automatic opening / closing device according to an embodiment of the present invention is applied.
FIG. 2 is a block diagram of the sliding door control device of FIG.
FIG. 3 is a block diagram showing a main part of the present invention extracted from the sliding door control device of FIG. 2 at a normal voltage.
4 is a block diagram corresponding to FIG. 3, showing a state when the voltage drops.
FIG. 5 is a block diagram corresponding to FIG. 3 and illustrating a case where at least one of the switches related to manual operation is operated at the time of voltage drop.
[Explanation of symbols]
2 Sliding door (opening / closing body)
7 Motor (drive source)
8 Clutch mechanism 10 Controller 15 Control circuit 16 NAND circuit 17 NOR circuit 18 OR circuit 19 Clutch drive element S1 Manual operation switch S2 Door open switch S3 Door close switch S4 Open switch S5 Close switch

Claims (4)

An opening and closing door that is opened and closed by an opening and closing movement mechanism provided on the vehicle body;
A clutch mechanism for intermittently transmitting the power of the drive source to the open / close moving mechanism;
A controller for intermittently controlling the clutch mechanism;
While engaging the clutch mechanism upon drop in the power supply voltage supplied to the controller, the door open door, by operating at least one switch for operating the closing or switching of the automatic / manual opening and closing, the power supply voltage automatic opening and closing device for a vehicle door, characterized in that it comprises a control circuit for releasing the engagement of the clutch mechanism at the time of reduction. An automatic opening / closing device for a vehicle opening / closing door according to claim 1,
The control circuit is configured to input an output signal from at least one of a switch that opens / closes the door and opens / closes the door, or an automatic / manual switching of opening / closing, an output signal from the NAND circuit, and an output from the controller A NOR circuit to which a CPU output signal is input, an OR circuit to which an output signal from the NOR circuit and a clutch output signal from a controller are input, and a clutch drive element to which an output signal from the OR circuit is input. An automatic opening / closing door device for opening and closing a vehicle. An automatic opening / closing device for a vehicle opening / closing door according to claim 1 or 2,
Closing door, automatic closing device for a vehicle door, characterized in that the sliding door which is opened and closed along the guide track provided on the vehicle body. An automatic opening / closing device for a vehicle opening / closing door according to claim 3,
An automatic opening / closing device for an opening / closing door for a vehicle, characterized in that the switch for operating the sliding door is a manual operation changeover switch, a switch for opening the outside / inside handle, and a switch for closing the outside / inside handle.

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