JP3723037B2 - Automatic opening / closing device for vehicle opening / closing body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic opening / closing device for a vehicle opening / closing body that transmits the driving force of a driving source such as a motor to an opening / closing body of a vehicle such as a slide door, a side door, and a back door via an electromagnetic clutch. About.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an automatic opening / closing device for a vehicle opening / closing body is known in which an 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. In this device, when a user consciously operates an operator provided near a driver's seat or a door handle, a drive source is activated via a controller to open / close the opening / closing body.
[0003]
In addition, this device controls the transmission maintaining force of the electromagnetic clutch interposed between the drive source and the opening / closing body with a controller so that the opening / closing body does not start when the vehicle stops on a slope or manually. It is held so that it can be opened and closed.
[0004]
[Problems to be solved by the invention]
In the above-described prior art, when the battery that supplies power to the controller deteriorates, the output voltage of the battery may drop when the engine is started, and the controller may stop operating. When the controller stops operating, the electromagnetic clutch is turned off (disconnected), and if the vehicle is stopped on a slope, the opening / closing body may be suddenly closed / opened by its own weight.
[0005]
In particular, when a microcomputer (hereinafter referred to as “microcomputer”) is used as the controller, the microcomputer is reset when the power supply voltage decreases in order to prevent runaway at a low voltage. For this reason, as for the capability of the electromagnetic clutch, even if the power supply voltage can hold the opening / closing body, the microcomputer itself is reset, so that control becomes impossible and the electromagnetic clutch is turned off.
[0006]
Japanese Patent Application Laid-Open No. 10-212867 related to the application of the present applicant states that in order to solve the inconvenience, when the power supply voltage supplied to the controller is lowered and the controller becomes inoperative, the clutch device is forcibly A technique has been proposed in which a circuit connected to the circuit is provided independently. However, if the clutch device is forcibly connected, there is a problem that the opening / closing operation of the opening / closing body cannot be manually performed until the power supply voltage is restored to normal.
[0007]
The present invention has been made to solve such a conventional problem. Even when the power supply voltage drops and the controller does not operate, the opening / closing body is gradually opened and closed for a certain time, and then the clutch device is turned off. An object of the present invention is to provide an automatic opening / closing device for a vehicle opening / closing body that can be manually opened and closed.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, an opening / closing body that opens and closes an opening provided in a vehicle body by a moving mechanism, an electromagnetic clutch that transmits power of a drive source to the moving mechanism in an intermittent manner, and intermittent control of the electromagnetic clutch And a voltage reduction control circuit that is activated when the power supply voltage supplied to the controller is reduced, and the voltage reduction control circuit drives the electromagnetic clutch for a certain period of time and then sets the electromagnetic clutch after a set time has elapsed. It is characterized by having a timer for disconnecting and a repetitive waveform generating circuit for generating a repetitive waveform and driving the electromagnetic clutch repeatedly to be intermittently connected .
[0009]
According to the first aspect of the present invention, even when the vehicle is stopped on a slope and the opening / closing body is stopped at an intermediate position, the vehicle is decelerated by driving the intermittent electromagnetic clutch with a repetitive waveform while falling. Therefore, the opening / closing body can be prevented from being suddenly closed or suddenly opened. Since the intermittent electromagnetic clutch is driven by the repetitive waveform for a predetermined time, the opening / closing body can reach and reach a safe position that is either fully closed or fully open.
[0011]
Further, since this electromagnetic clutch disconnects after a predetermined time has elapsed, the opening / closing body after stopping can be opened and closed by a manual force, and is easy to use.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an external perspective view showing an example of an automobile to which an automatic opening / closing device for a sliding door for a vehicle according to the present invention is applied, and shows a state in which a sliding door 3 is mounted on a side surface of a vehicle body 1 so as to be opened and closed in the front-rear direction. Show. FIG. 2 is an enlarged perspective view of the vehicle body 1 showing a state in which the slide door 3 (shown by a chain line) is removed, and FIG. 3 is a perspective view showing only the slide door 3 alone.
[0013]
In these drawings, the slide door 3 includes an upper track 12 in which an upper sliding connector 31 and a lower sliding connector 32 fixed to the inner upper and lower ends are provided on the upper edge of the door opening 11 of the vehicle body 1. Further, the vehicle is suspended in the vehicle body 1 so as to be slidable in the front-rear direction by being linked to the lower track 13 provided on the lower edge.
[0014]
The slide door 3 is guided by a hinge arm 33 attached to the inner rear end slidably engaged with a guide track 14 fixed in the vicinity of the rear waist portion of the vehicle body 1 so as to guide the door opening 11. From the sealed fully closed position, while projecting slightly outward from the outer surface of the outer panel of the vehicle body 1, it moves rearward in parallel with the side of the exterior panel of the vehicle body 1, and moves to the fully opened position where the door opening 11 is fully opened. It is attached to. Further, a door handle 35 for manually opening and closing is attached to the outer surface of the slide door 3.
[0015]
As shown in FIG. 4, a slide door drive device 5 is mounted behind the door opening 11 of the vehicle body 1 between an outer panel that covers the vehicle body 1 and an inner panel on the indoor side. The slide door drive device 5 moves the cable member 51 disposed in the guide track 14 by driving a motor, and thereby moves the slide door 3 connected to the cable member 51.
[0016]
In this embodiment, the opening / closing switch installed in the vehicle gives an instruction to open / close the slide door 3 and, as shown in FIG. 1, the wireless remote control 9 can also issue an opening / closing instruction from outside the vehicle. Has been. Details of this configuration will be described later.
[0017]
FIG. 5 is a perspective view showing a main part of the sliding door driving device 5. In the figure, the sliding door drive device 5 has a motor drive unit 52 as a “drive source”, and this motor drive unit 52 is forward-reversely rotated on a base plate 53 fixed with a bolt or the like on the indoor side of the vehicle body 1. The sliding door opening / closing motor 54 capable of opening and closing, a drive pulley 55 around which the cable member 51 is wound, and a speed reducing portion 57 incorporating an electromagnetic clutch 56 are fixed.
[0018]
The cable member 51 wound around the drive pulley 55 has an opening 14 a above the guide track 14 that opens outwardly in a U-shape through a pair of guide pulleys 58, 58 provided behind the guide track 14. And the lower opening 14b are wound around in parallel with each other and wound around a reversing pulley 59 provided at the front end of the guide track 14 to form an endless rope.
[0019]
In addition, a moving member 36 is fixed at an appropriate portion of the cable member 51 that travels through the opening 14a of the guide track 14 so that the cable member 51 can travel within the opening 14a without resistance. The cable member 51 has a door closing cable 51a on the front side of the moving member 36 and a door opening cable 51b on the rear side.
[0020]
The moving member 36 is connected to the inner rear end portion of the slide door 3 through the hinge arm 33, and the guide track 14 is pulled by the pulling force of the door closing cable 51a or the door opening cable 51b due to the rotation of the opening / closing motor 54. The inside of the opening 14a is moved forward or backward, whereby the slide door 3 is moved in the closing direction or the opening direction. Therefore, the slide member moving mechanism is configured by the cable member 51, the guide pulley 58, the reverse pulley 59, the hinge arm 33, the moving member 36, and the like.
[0021]
A rotary encoder 60 that measures the rotation angle with high resolution is linked to the rotation shaft of the drive pulley 55. The rotary encoder 60 generates an output signal having a pulse number corresponding to the rotation angle of the drive pulley 55, and can measure the movement amount of the cable member 51 wound around the drive pulley 55, that is, the movement amount of the slide door 3. It is like that. Therefore, if the number of pulses from the rotary encoder 60 is counted up to the fully opened position with the fully closed position of the slide door 3 as an initial value, the position count value N represents the position of the moving member 36, that is, the position of the slide door 3. It will be.
[0022]
FIG. 6 is a schematic plan view showing a moving state of the slide door 3. As described above, the sliding door 3 is held at the front by the upper sliding connector 31 and the lower sliding connector 32 being linked to the upper track 12 and the lower track 13, and the hinge arm 33. Is fixed to the cable member 51 via the moving member 36 so that the rear portion is held.
[0023]
Next, the connection relationship between the sliding door control device 7 and each electrical element in the vehicle body 1 and the sliding door 3 will be described with reference to the block diagram shown in FIG. The slide door control device 7 controls the slide door drive device 5 by program control by a microcomputer, and is arranged, for example, in the vicinity of the motor drive unit 52 in the vehicle body 1.
[0024]
As for the connection between the sliding door control device 7 and each electrical element in the vehicle body 1, a connection to the battery 15 for receiving the DC voltage BV, a connection to the ignition switch 16 for receiving the ignition signal IG, and a parking signal PK. There is a connection with the parking switch 17 for receiving the signal and a connection with the main switch 18 for receiving the main switch signal MA.
[0025]
Further, connection with the door opening switch 19 for receiving the door opening signal DO, connection with the door closing switch 20 for receiving the door closing signal DC, remote control opening signal RO or remote control closing signal RC from the wireless remote controller 9 is received. There is a connection with a keyless system 21 for connecting, a connection with a buzzer 22 that generates an alarm sound for warning that the slide door 3 is automatically opened and closed, and a connection with a vehicle speed sensor 23 for receiving a vehicle speed signal SS. Note that the door opening switch 19 and the door closing switch 20 are each composed of two operators. These switches are installed, for example, in two places, a driver's seat and a rear seat in the vehicle. Is shown.
[0026]
Next, the connection relationship between the slide door control device 7 and the slide door drive device 5 is as follows: connection for supplying power to the opening / closing motor 54, connection for controlling the electromagnetic clutch 56, and pulse signal from the rotary encoder 60. In response to this, there is a connection with a pulse signal generator 61 that outputs pulse signals φ1 and φ2.
[0027]
The connection between the sliding door control device 7 and each electrical element in the sliding door 3 is performed by connecting the vehicle body side connector 24 provided in the door opening 11 and the sliding door 3 in a state where the sliding door 3 is slightly opened from the fully closed state. This is made possible by connecting a door-side connector 37 provided at the open end.
[0028]
The connection relationship between the sliding door control device 7 and each electrical element in the sliding door 3 in this connected state is a closure motor (CM) 38 for tightening the sliding door 3 from the state immediately before the half latch to the full latch state. A connection for supplying power, a connection for supplying power to an actuator (ACTR) 39 for driving the door lock 34 to remove it from the striker 25, and a half latch signal from the half latch switch 40 for detecting a half latch There are a connection for receiving HR, a connection for receiving a door handle signal DH from a door handle switch 35a for detecting an operation of the door handle 35 connected to the door lock 34, and the like. A fully open detection switch 65 that is turned on by the lower sliding connector 32 when the slide door 3 reaches the fully open position is mounted on the lower track 13.
[0029]
FIG. 8 is a block diagram showing the control part of the electromagnetic clutch, which is the main part of the present invention, extracted from the block diagram shown in FIG. In the figure, a sliding door control device 7 has a controller 71 having a microcomputer inside, and repeatedly performs control at regular time intervals.
[0030]
The slide door control device 7 also has a power supply monitoring circuit 72. The power supply monitoring circuit 72 receives a power supply voltage from the battery 15 and generates a power supply voltage Vcc to be supplied to the controller 71. It has a function to monitor voltage.
[0031]
That is, when the power supply monitoring circuit 72 detects that the output voltage of the battery 15 has dropped below a certain value, it outputs a reset signal to the reset terminal of the controller 71 and stops the operation of the controller 71. This is because the microcomputer constituting the controller 71 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).
[0032]
One end of the electromagnetic clutch 56 is connected to the battery 15, and the other end is grounded via a switch element 81 in the slide door control device 7.
[0033]
The slide door control device 7 includes first and second motor control relays 74 and 75. The first motor control relay 74 has one end of the relay coil 74 </ b> L connected to the switch element TR <b> 2 of the controller 71 and the other end connected to the battery 15. The movable terminal of the contact switch 74S is connected to one end of the open / close motor 54, one of the two fixed terminals is connected to the battery 15, and the other is grounded via the contact switch 76S of the motor brake cancel relay 76. Yes.
[0034]
The second motor control relay 75 has one end of the relay coil 75 </ b> L connected to the switch element TR <b> 3 of the controller 71 and the other end connected to the battery 15. The movable terminal of the contact switch 75S is connected to the other end of the motor 54, and one of the two fixed terminals is connected to the battery 15 and the other is grounded.
[0035]
The sliding door control device 7 has a motor brake cancel relay 76, one end of the relay coil 76 </ b> L is connected to the switching element TR <b> 4 of the controller 71, and the other end is connected to the battery 15. The contact switch 76S has a movable terminal connected to the other fixed terminal of the motor control relay 74, and the fixed terminal is grounded.
[0036]
One end of the electromagnetic clutch 56 is connected to the battery 15, and the other end is grounded via a switch element 81 in the slide door control device 7.
[0037]
This switch element 81 is controlled by the output of the OR circuit 82 that takes the OR condition of the inverted value of the A output of the switch element TR 11 of the controller 71 and the output of the AND circuit 83. The AND circuit 83 is an AND condition of the inverted value of the B output of the switch element TR12, the output of the timer 84 having one end connected to the B output of the switch element TR12, and the output of the pulse generating circuit 85 having one end connected to the battery 15. I take the. The timer 84 always outputs “L”, and when the B output becomes “L”, it continuously outputs “H” for a set time from that time, and outputs “L” after the set time elapses. . Since the pulse generation circuit 85 is connected to the battery 15, it constantly outputs a pulse signal that alternately switches between “H” and “L” at a constant cycle. Here, the OR circuit 82, the AND circuit 83, the timer 84, and the pulse generation circuit 85 constitute a voltage reduction control circuit.
In this configuration, during normal operation (power supply voltage of 6.5 volts or more), the microcomputer of the controller 71 is operating, so that the switch element TR12 is controlled so that the B output is constantly at the “H” output. . Then, since the inverted value “L” of the B output is input to the AND circuit 83, “L” is output to the OR circuit 82. Therefore, since the output of the OR circuit 82 becomes an inverted value of the A output, the switch element 81 can be controlled on the controller 71 side.
[0039]
That is, when the A output becomes “H”, the switch element 81 is turned off and the electromagnetic clutch 56 is also turned off. When the A output becomes “L”, the switch element 81 is turned on and the electromagnetic clutch 56 is also turned on.
[0040]
When the door opening switch 19 is turned on, the A output becomes “L”, the switch element 81 is turned on, and the electromagnetic clutch 56 is also turned on. Next, the switch element TR2 is turned on and a current flows through the relay coil 74L of the motor control relay 74, whereby the contact switch 74S is closed. When the contact switch 74S is closed, one end of the open / close motor 54 is connected to the battery 15 and the other end of the open / close motor 54 is grounded via the motor control relay 75, so that the open / close motor 54 opens the slide door 3. It is rotationally driven in the direction of driving in the direction. As a result, the power of the opening / closing motor 54 is transmitted to the cable member 51 via the electromagnetic clutch 56 and the drive pulley 55, and the slide door 3 is driven in the opening direction.
[0041]
When the door closing switch 20 is turned on, the output A is similarly “L”, the switch element 81 is turned on, and the electromagnetic clutch 56 is also turned on. Next, the switch element TR3 is turned on, and a current flows through the relay coil 75L of the motor control relay 75, whereby the contact switch 75S is closed and the other end of the open / close motor 54 is connected to the battery 15.
[0042]
Since one end of the open / close motor 54 is grounded via the motor control relay 74 and the motor brake cancel relay 76, the open / close motor 54 is rotationally driven in a direction for driving the slide door 3 in the closing direction. As a result, the power of the opening / closing motor 54 is transmitted to the cable member 51 via the electromagnetic clutch 56 and the drive pulley 55, and the slide door 3 is driven in the closing direction.
[0043]
FIG. 9 is a time chart showing the operation of the present invention when the power supply voltage is lowered. When the power supply voltage is 6.5 volts or less, a reset signal is output from the power supply monitoring circuit 72 to the controller 71, and the controller 71 enters a reset state. Then, the B output is opened, but is brought into an “L” state by a pull-down resistor. The inverted value “H” of the B output is input to the AND circuit 83.
[0044]
The timer 84 starts timing from the time T1 when the B output becomes “L”, and outputs “H” to the AND circuit 83 for 10 seconds which is a set time. Since the pulse generation circuit 85 always outputs a pulse signal, if the B output and the output of the timer 84 become “H”, the AND condition of the AND circuit 83 is satisfied when the pulse signal becomes “H”. become. That is, the AND circuit 83 outputs an “H” output to the OR circuit 82 at the same timing as the pulse signal generated from the pulse generation circuit 85. At this time, since the inverted value of the A output of the OR circuit 82 is “L”, the output of the OR circuit 82 follows the output of the AND circuit 83.
[0045]
The pulse signal output from the OR circuit 82 turns on and off the switch element 81 at the same timing. As the switch element 81 is turned on / off, the electromagnetic clutch 56 is repeatedly turned on / off.
[0046]
By doing so, even when the vehicle stops on a slope and the slide door 3 stops at a midway position, the slide door 3 moves in the falling direction while receiving deceleration by the intermittent electromagnetic clutch 56 driven by a pulse signal. Therefore, it is possible to prevent the slide door 3 from being suddenly closed or opened. Since the intermittent driving of the electromagnetic clutch 56 by the pulse signal is continued for 10 seconds, the slide door 3 can reach a safe position in either the fully closed state or the fully open state and stop.
[0047]
The timer 84, which continues to measure time, switches the output to “L” at time T2 when 10 seconds have elapsed. Then, the AND condition of the AND circuit 83 is not satisfied, and the “H” output to the OR circuit 82 is switched to “L”. As a result, the OR circuit 82 does not satisfy the OR condition and turns off the output to the switch element 81. Since the switch element 81 is turned off, the electromagnetic clutch 56 is also turned off. Since this electromagnetic clutch 56 is turned off after a lapse of a predetermined time, the slide door 3 after being stopped can be opened and closed by a manual force and is easy to use.
[0048]
In this embodiment, the repetitive waveform generation circuit is a pulse generation circuit that generates a pulse waveform. Can be replaced.
[0049]
【The invention's effect】
According to the first aspect of the present invention, even when the vehicle is stopped on a slope and the opening / closing body is stopped at an intermediate position, the vehicle is decelerated by driving the intermittent electromagnetic clutch with a repetitive waveform while falling. Therefore, the opening / closing body can be prevented from being suddenly closed or suddenly opened. Since the intermittent electromagnetic clutch is driven by the repetitive waveform for a predetermined time, the opening / closing body can reach a safe position of either fully closed or fully open and stop.
[0050]
Further, since this electromagnetic clutch disconnects after a predetermined time has elapsed, the opening / closing body after stopping can be opened and closed by a manual force, and is easy to use.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing an example of an automobile to which the present invention is applied.
FIG. 2 is an enlarged perspective view of the vehicle body showing a state where the sliding door of FIG. 1 is removed.
FIG. 3 is a perspective view showing the sliding door of FIG. 1;
4 is a perspective view showing a mounting portion of the sliding door as seen from the vehicle inner side of FIG. 1. FIG.
5 is a perspective view showing a main part of the sliding door drive device of FIG. 1. FIG.
6 is a schematic plan view showing a moving state of the slide door of FIG. 2. FIG.
7 is a block diagram showing a connection relationship between the sliding door control device of FIG. 2 and peripheral electrical elements. FIG.
8 is a block diagram of an embodiment in which the main part of the present invention of FIG. 2 is extracted and shown.
9 is a time chart showing the operational relationship of the sliding door control device of FIG. 7. FIG.
[Explanation of symbols]
1 Car body 3 Sliding door (opening / closing body)
DESCRIPTION OF SYMBOLS 5 Sliding door drive device 7 Sliding door control device 19 Door opening switch 20 Door closing switch 33 Hinge arm 36 Moving member 51 Cable member 52 Motor drive part (drive source)
54 Opening and Closing Motor 56 Electromagnetic Clutch 58 Guide Pulley 59 Reverse Pulley 71 Controller 72 Power Supply Monitoring Circuit 81 Switch Element 82 OR Circuit (Voltage Reduction Control Circuit)
83 AND circuit (voltage reduction control circuit)
84 Timer 85 Pulse generator (repetitive waveform generator)

Claims (1)

An opening / closing body that opens and closes an opening provided in the vehicle body by a moving mechanism, an electromagnetic clutch that transmits power of a driving source to the moving mechanism in an intermittent manner, a controller that controls the electromagnetic clutch intermittently, and a controller that is supplied to the controller And a voltage reduction control circuit that starts when the power supply voltage drops.
The voltage reduction time control circuit includes a timer which disconnects the electromagnetic clutch after a predetermined time elapses after the electromagnetic clutch is driven a predetermined time, a repeating waveform generator circuit to drive to repeat intermittent electromagnetic clutch to generate a repetitive waveform An automatic opening / closing device for a vehicle opening / closing body.

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