JPH0726188Y2 - Sunroof control circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] <Industrial Application Field> The present invention relates to a sunroof control circuit, and more particularly to a sunroof control circuit which is configured to perform a slide-open operation after tilting up and a tilt-down after fully closing the slide. Control circuit for sunroof.

<Prior Art> Conventionally, there are various types of sun roofs for automobiles that automatically open and close. For example, a sun roof panel is tilted up and then slid to be fully opened. There is. In the sunroof of the above type, by temporarily stopping the sunroof panel when the tilt-up is completed, the tilt-up state can be easily maintained, and when the sunroof panel is moved from the slide open state to the fully closed state, the sunroof panel in front of the fully closed position can be maintained. By temporarily stopping at a predetermined position, it is possible to prevent foreign matter from being caught in the fully closed state.

The above-mentioned sunroof control circuit requires an interruption circuit for interrupting the operation of the motor drive circuit and an interruption holding circuit for holding the interruption state. In order to stop the operation, it is possible to control each operation by providing an interruption holding circuit corresponding to each. However, when two interruption holding circuits are provided, not only the circuit becomes complicated, but also the number of parts increases.

<Problems to be Solved by the Invention> In view of the problems of the prior art as described above, the main purpose of the present invention is to provide only one interruption holding circuit, which is used before completion of tilt-up and closing operation. (EN) Provided is a sunroof control circuit capable of interrupting each operation when a predetermined position is reached.

[Structure of the Invention] <Means for Solving the Problems> According to the present invention, the sunroof is driven by a motor so that the slide-opening operation is performed after tilting up and the tilt-down is performed after the slide is completely closed. An opening / closing switch, a motor drive circuit for driving the motor in the forward and reverse directions according to an operating state of the opening / closing switch, a tilting state when the tilt-up completion state is set, and a tilt-down state A tilt-up detection switch that is turned off at the time of, and a slide opening that is turned on before the slide opening reaches a predetermined amount and turned off after the slide opening reaches a predetermined amount. A detection switch, an interruption circuit for interrupting the drive state of the motor drive circuit, and the open / close switch during operation of either of the two. An interruption holding circuit that puts the interruption circuit into the interruption state when the output switch changes into the common insertion state, and releases the interruption circuit from the interruption state when the one operation state of the opening / closing switch is released thereafter. It is achieved by providing a sunroof control circuit characterized by having:

<Operation> With this configuration, when the sunroof panel is completely tilted up, the slide opening detection switch is in the ON state and the tilt-up detection switch is in the ON state, and the sunroof panel slides in the closing direction. When the slide opening position is reached to the predetermined slide opening position, the tilt-up detection switch is in the ON state, and the slide opening detection switch is in the ON state, so in each case,
Since both detection switches are in the closed state and both detection switches are connected in series to the interruption holding circuit, the interruption holding circuit can judge the above condition to interrupt the operation of the motor drive circuit. . Further, after the motor drive circuit is interrupted, the operating state of the open / close switch is released to release the interrupted state. Therefore, the open / close operation can be performed by operating the open / close switch again.

<Embodiment> Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 are schematic explanatory views showing an open / closed state of an automobile sunroof to which the present invention is applied. In FIG. 1, a sunroof panel 4 capable of closing an opening 3 provided in a roof 2 of a vehicle 1 as shown by an imaginary line is driven by a motor (not shown) to form a known link mechanism. The state in which the tilt up is performed in the direction of the arrow in the figure is shown. In FIG. 2, the sunroof panel 4 slides rearward while maintaining the tilt-up state,
The state where the opening 2 is fully opened is shown. Further, FIG. 3 shows that the sunroof panel 4 slides from the fully open state to the fully closed position and reaches a predetermined amount of the slide opening from the fully closed position, for example, the distance from the front edge of the opening 3. A state where the sunroof panel 4 is temporarily stopped is shown at a predetermined position a (for example, 150 mm), and in FIG. 4, a state shown by an imaginary line which is a tilt-up state similar to FIG. 6A to 6C show a state in which the sunroof panel 4 is tilted down in the direction of the arrow in the figure and the opening 3 is fully closed.

FIG. 5 shows a sunroof control circuit according to the present invention. A pair of main fuses FL1, FL2 are connected in parallel to the positive terminal of the battery 6, and one main fuse FL1 is the fuse F1 and the power supply relay RL1.
Is connected to the power supply terminal T1 of the control unit 7 which constitutes the main circuit of the present control circuit via the normally open contact of. The other main fuse FL2 is grounded through the ignition switch 8, the fuse F2, and the coil of the relay RL1 in series. The negative terminal of the battery 6 has an open switch 9 connected in parallel with each other.
, And the corresponding input terminals T2, T3 of the control unit 7 via the close switch 10, respectively.

Both terminals of a motor 11 for driving the sunroof panel 4 are connected to a pair of output terminals T4 and T5 provided in the control unit 7, respectively. In the control unit 7, the output terminals T4 and T5 are connected to the common terminals of the contacts S2 and S3 of the pair of drive relays RL2 and RL3 for driving the motor 11, The normally open terminals of the contacts S2 and S3 are connected to the power supply terminal T1, and the normally closed terminals of the contacts S2 and S3 are connected to the negative terminal of the battery 6 via the terminal T6. It is grounded together with. Therefore, the motor 11 can be driven by driving either one of the drive relays RL2 and RL3.

Further, the terminal T7 provided in the control unit 7 and the battery 6
A tilt-up detection switch 12 and a slide opening detection switch 13 are connected in series with each other between the negative side terminal of and. Each of the switches 12 and 13 is, for example, a limit switch that is turned on / off according to the operation of the sunroof panel 4, and is operated by a dog (not shown) fixed to the sunroof panel 4. When the tilt-up detection switch 12 is between the tilt-up completion position shown in FIG. 1 and the fully open position shown in FIG. 2, the tilt up detection switch 12 is in the ON state as the first state and the fully closed position and tilt When it is between the up-completion position, that is, when the tilt-down is performed, the cut state is set as the second state. As shown in FIG. 3, the slide opening degree detection switch 13 is provided at a position where the slide opening degree reaches a predetermined amount,
When the sunroof panel 4 is between the fully closed position shown in the figure, the sunroof panel 4 is likewise in the closed state, and when the sliding opening is between the position where the predetermined amount is reached and the fully opening position, that is, the sliding opening is After reaching the predetermined amount, the cut state is set as the second state.

Next, the internal circuit of the control unit 7 is shown below. Capacitor C1 connected in parallel to power supply terminal T1
And the compensating resistor R1 through the diode D3 in the forward direction,
The open switch 9 is connected to the connected terminal T2. Similarly, a capacitor C2 and a compensating resistor R2 connected in parallel to the power supply terminal T1 are connected to a terminal T3 connected to the close switch 10 via a diode D4 in the forward direction.

Further, the power supply terminal T1 is connected to the emitter of the PNP type transistor Q1 via the resistor R3, and the collector of the transistor Q1 is connected to the base of the NPN type transistor Q2 via the resistor R4. The base of the transistor Q2 is connected to the terminal T2 via the resistor R5 and the diode D1 in the forward direction.
The diode D2 connected in parallel with the diode D1 is also connected to the terminal T3 via the forward direction. The base of the transistor Q1 has a resistor R6 and a stabilizing capacitor C3 connected in parallel to the power supply terminal T1.
A resistor R7 is connected between the base of the transistor Q1 and the collector of the transistor Q2, and the emitter of the transistor Q2 is connected to the pair of diodes D1 and D2 described above via the resistor R8. ing.

The base of the transistor Q1 is connected to the terminal T7 via the diode D5 in the forward direction, the capacitor C4 and the resistor R14 in this order, and the diode D6 in the forward direction. Between the diode D5 and the capacitor C4, through the diode D7 in the forward direction, and further through the resistor R10, the power supply terminal T
Connected to 1.

The emitter of a PNP transistor Q3 is connected to the power supply terminal T1, and the base of the transistor Q3 is connected to the collector of the transistor Q2 via the resistor R9 and the diode D8 in the forward direction. There is. A resistor R11 is connected between the emitter and base of the transistor Q3, and the collector of the transistor Q3 is connected to the pair of diodes D1 and D2 described above via the resistor R12. Further, the Zener diode ZD and the resistor R13 connected in parallel to the power supply terminal T1 are connected to the capacitor C4 and the resistor R4.
The resistor R15 connected to the power supply terminal T1 is connected between the resistor R14 and the diode D6.

The stabilizing capacitor C5 and the resistor R16, which are connected to the power supply terminal T1 in parallel with each other, are connected between the collector of the transistor Q3 and the resistor R12 via the resistor R17.
PNP transistor Q4 whose emitter is connected to the power supply terminal T1
It is also connected to the base of. The collector of the transistor Q4 has a relay RL for driving the motor 11, for example, in the forward direction to slide the sunroof panel 4 in the opening direction.
The second coil L2 is connected, and the coil L2 is connected to the terminal T2 via the diode D3 described above. A back electromotive force preventing diode D9 is connected in parallel to the coil L2. By exciting the coil L2, the contact S2 is normally connected to the open side terminal.

Similarly to the above, the stabilizing capacitor C6 and the resistor R18, which are connected to the power supply terminal T1 in parallel with each other, are connected between the collector of the transistor Q3 and the resistor R12 via the resistance R19, and the power supply terminal T1. It is also connected to the base of a PNP transistor Q5 whose emitter is connected to. To the collector of the transistor Q5, a coil L3 of a relay RL3 for driving the motor 11, for example, in the reverse direction to slide the sunroof panel 4 in the closing direction is connected, and the coil L3 is connected via the diode D4 described above. It is connected to terminal T3. The coil L3 is also connected to the diode D4 through the diode D11 in the forward direction. Further, a diode D10 for preventing back electromotive force is also connected in parallel to this coil L3. By exciting the coil L3 in the same manner as described above, the contact S3 described above is connected to the normally open side terminal.

Thus, the pair of transistors Q4, Q5 and the corresponding relays RL2, RL3 constitute the motor drive circuit 15. Further, when the transistor Q3 is turned on, the base potential of each of the transistors Q4, Q5 rises into a so-called pull-up state, and the operation of each of the transistors Q4, Q5 is interrupted. It is configured. Further, in order to hold the operating state of the transistor Q3, the interruption holding circuit 14 is constituted by both the transistors Q1 and Q2.

Next, the operation procedure of the control circuit in this embodiment will be described below with reference to the time chart shown in FIG.

First, when the open switch 9 is turned on to tilt up the sunroof panel 4 in the fully closed state, the line via the resistor R17, the resistor R12 and the diode D1 is grounded and the coil L2 of the relay RL2 is turned on. Diode D
Since it is grounded via 3, the base of transistor Q4
A potential difference occurs between the emitters, turning on the transistor Q4. Then, the coil L2 is excited and the contact S2 is normally connected to the open side terminal, so that the power supply voltage is supplied to the terminal T4 and the contact S3 is normally connected to the closed side terminal, that is, the grounded state. A current flows in the direction 11 from the terminal T4 to the terminal T5 in FIG. 5, the motor 11 rotates in the normal direction, and the sunroof panel 4 tilts up as shown in FIG.

When the sunroof panel 4 is completely tilted up, the tilt-up detection switch 12 is turned on, and in that state, the slide opening detection switch 13 is turned on. Therefore, both switches 12 and 13 are in the operating state. And terminal T7 is grounded. Therefore, the line from the base of the transistor Q1 to the terminal T7 via the diode D5, the capacitor C4, the resistor R14, and the diode D6 is grounded, so that the capacitor C4 starts charging,
Q1 turns on and the transistors Q2 and Q3 turn on. When transistor Q3 turns on, transistor Q3
Since the potential between the collector and the resistor R12 is pulled up, the potential at the base of the transistor Q4 rises, the potential difference between the base and emitter of the transistor Q4 does not occur, and the transistor Q4 is turned off. Then, even if the open switch 9 is continuously operated, the motor drive circuit 15 is suspended, the motor 11 is stopped, and the sunroof panel 4 is held in the tilt-up state.

When the open switch 9 is turned off, the ground side of each of the transistors Q1 and Q2 is in an open state, so that the interruption holding circuit 14 is in the self-holding state, that is, the pull-up of the potential between the collector of the transistor Q3 and the resistor R12. When the state is released and the open switch 9 is turned on again, the transistor Q4 can be turned on. Therefore, the motor 11
Starts to rotate in the normal direction, and the sunroof panel 4 is slid backward as shown in FIG.
When the sunroof panel 4 slides from the tilt-up completed state toward the fully open position, when the sunroof panel 4 passes a predetermined slide opening position a distance a from the front edge of the opening 3, as described above, the slide opening is performed. The frequency detection switch 13 is turned off, which causes the interruption holding circuit 14 to be in an open state, and the potential between the collector of the transistor Q3 and the resistor R12 is pulled up as described above. Therefore, the motor drive circuit 15 is not interrupted.

Next, when the close switch 10 is turned on to slide the sunroof panel 4 toward the fully closed position, the resistance
The line of R19, the resistor R12, and the diode D2 is grounded, and the collector of the transistor Q5 is grounded via the coil L3 and the diode D4, so that the transistor Q5 is turned on as described above. Therefore, a current flows in the motor 11 in the direction from the terminal T5 to the terminal T4 in FIG. 5, the motor 11 rotates in the reverse direction, and the sunroof panel 4 slides in the closing direction as shown in FIG.

As described above, when the sunroof panel 4 reaches the predetermined slide opening position, the tilt-up detection switch 12 is in the ON state, and the slide opening detection switch is
Since 13 is turned on, the terminal T7 is grounded, the interruption holding circuit 14 is activated again, and the transistor Q5 is turned off. Even at this time, the motor drive circuit 15 is in a suspended state, and even if the close switch 10 is continuously operated, the motor 11
Stops, and the sunroof panel 4 is temporarily held at a predetermined slide opening position. Further, by turning off the close switch 10, the ground side of each of the transistors Q1 to Q3 becomes an open state, similarly to the above, so that the interruption holding circuit 14 is in the self-holding state, that is, the transistor described above.
When the pull-up state of the potential between the collector of Q3 and the resistor R12 is released and the close switch 10 is turned on again, the transistor Q5 can be turned on.

When the close switch 10 is turned on again, the motor 11 starts to rotate in the reverse direction even if the transistor Q5 is turned on as described above, and the sunroof panel 4 is tilted down after passing through the tilt-up completion position as shown in FIG. Then, it becomes a fully closed state. When the sunroof panel 4 reaches the tilt-up position, the tilt-up detection switch 12 is turned off, but similarly to the above, the motor drive circuit 15 is not interrupted.

[Effects of the Invention] As described above, according to the present invention, two detection switches for detecting the tilt-up completion position and the slide predetermined opening position are connected in series to the interruption holding circuit, and one detection switch is turned on. Since the change is input to the interruption holding circuit via the ON state of the other detection switch, only one interruption holding circuit stops at the tilt-up completion position in the opening operation,
And the closing operation can be stopped at a predetermined slide opening position, the circuit can be simplified and the number of parts can be reduced, so that the effect is extremely large.

[Brief description of drawings]

1 to 4 are schematic explanatory views showing the open / closed state of a sunroof panel to which the present invention is applied. FIG. 5 is a diagram showing a sunroof control circuit according to the present invention. FIG. 6 is a diagram showing a time chart based on the sunroof control circuit. 1 ... Vehicle, 2 ... Roof 3 ... Opening, 4 ... Sunroof panel 6 ... Battery, 7 ... Control unit 8 ... Ignition switch 9 ... Open switch 10 ... Close switch 11 ... Motor 12 ...... Tilt up detection switch 13 …… Slide opening detection switch 14 …… Interruption holding circuit, 15 …… Motor drive circuit 16 …… Interruption circuit

Claims (1)

[Scope of utility model registration request] 1. A control circuit for a sunroof, which is driven by a motor so as to perform a slide opening operation after tilting up and a tilting down after fully closing the slide, the control circuit depending on an opening / closing switch and an operating state of the opening / closing switch. Motor drive circuit for driving the motor in the forward and reverse directions, a tilt-up detection switch which is in a closed state when the tilt-up is completed and is in a cut state when the tilt-down is in a state, and the slide opening is set to a predetermined amount. A slide opening detection switch which is in a closed state before reaching and a cut state after the slide opening reaches a predetermined amount, and a slide opening detection switch connected in series with the tilt up detection switch, and the motor drive circuit. An interruption circuit for interrupting the drive state and both of the detection switches during operation of either the opening or closing of the open / close switch. An interruption holding circuit that puts the interruption circuit into the interruption state when the switch changes into a common state and then releases the interruption state of the interruption circuit when the one operating state of the open / close switch is released. A sunroof control circuit having: