JP3480233B2 - Control circuit for vehicle switchgear - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control circuit for a vehicle opening / closing device that controls an opening / closing device such as a power window or a sunroof provided in a vehicle.

[0002]

2. Description of the Related Art FIG. 5 (a) shows a circuit of a conventional control circuit 101 for an automobile power window. The control circuit 101 includes an UP switch 103 that is operated when raising a window glass of an automobile, a DOWN switch 113 that is operated when lowering a window glass, and a motor 109 that switches a rotation direction according to a current flowing direction.
And a battery power source 107 for storing and supplying electric energy generated by a generator mounted on an automobile, and UP relays 105 and D for switching contacts by supplying DC power from the battery power source 107 to an internal coil.
An OWN relay 111 is provided.

The UP switch 10 is operated by the passenger of the vehicle.
When 3 is turned on, the contact point of the UP relay 105 is
The state of being in contact with the X side is switched to the state of being in contact with the W side. In this case, the current from the battery power source 107 is UP
Via the terminal W of the relay 105, the motor 109, the DOW
It flows in the IUP direction from the terminal Z of the N relay 111 to the ground. Corresponding to this current direction, the motor 109 rotates in the direction of raising the window glass. Thus, while the UP switch 103 is on, the motor 109 continues to rotate and raises the window glass.

On the other hand, when the DOWN switch 113 is turned on by the passenger of the automobile, the DOWN relay 1
The contact 11 is switched from the state of being in contact with the Z side to the state of being in contact with the Y side. In this case, the current from the battery power source 107 passes through the terminal Y of the DOWN relay 111,
It flows in the IDOWN direction from the terminal 109 of the motor 109 and the UP relay 105 to the ground. Corresponding to this current direction, the motor 109 rotates in the direction of lowering the window glass.
Thus, while the DOWN switch 113 is on,
The motor 109 continues to rotate and lowers the window glass.

[0005]

FIG. 5B shows that the UP relay 105 and the UP switch 103 are caused by some reason.
It is a figure which shows the equivalent circuit when the connection wire between and is short-circuited, or when the UP relay 105 adheres to the terminal W side.

In this case, since the connection line between the UP relay 105 and the UP switch 103 is short-circuited, the state is the same as when the UP switch 103 is turned on,
The contact of the UP relay 105 continues to maintain the state of being in contact with the W side. Further, a current in the IUP direction flows through the motor 109, and the motor 109 rotates in a direction to raise the window glass.

[0007] At this time, depending on the passenger of the car, the DOWN
When the N switch 113 is turned on, the terminal of the DOWN relay 111 is switched from the Z-side contact state to the Y-side contact state. However, since both ends of the motor 109 have the same potential, no current flows through the motor 109. As a result, even when the DOWN switch 113 was turned on, the motor 109 did not rotate, and the window glass could not be lowered.

As described above, when the connection wire between the UP relay 105 and the UP switch 103 is short-circuited or the UP relay 105 is fixed to the terminal W side, there is a problem that the window glass cannot be lowered. It was The present invention has been made in view of the above, and its purpose is to:
An object of the present invention is to provide a control circuit for a vehicle opening / closing device that can contribute to improving reliability.

[0009]

The invention according to claim 1 is
In order to solve the above problems, a first relay coil is driven in response to an ON operation of an open switch for opening and closing a window provided on one end of a motor for opening and closing the window. While the first relay contact for switching one end of the motor from the ground side to the power supply side is connected to the other end of the motor in response to the ON operation of the closing switch for closing the window. A second relay contact that switches the other end of the motor from the ground side to the power supply side by driving the second relay coil is connected, and the closing switch is connected to the ground side of the second relay coil. The control circuit of the connected vehicle opening / closing device has an interlocking switch for forcibly switching the other end of the motor connected to the power supply side to the ground side in conjunction with the ON operation of the open switch. Essential To.

According to a second aspect of the present invention, in order to solve the above-mentioned problems, the interlock switch is provided on the power source side of the second relay contact or between the second relay contact and the other end of the motor. The main point is to be provided in.

[0011]

[0012]

[0013]

According to the first aspect of the present invention, the other end of the motor connected to the power source side is forcibly switched to the ground side in conjunction with the ON operation of the open switch.
An open drive current can be supplied to the motor, which can contribute to improvement in reliability.

According to the second aspect of the present invention, an interlocking switch is provided between the power source side of the second relay contact or the second relay contact and the other end of the motor. , The other end of the motor connected to the power supply side can be forcibly switched to the ground side in conjunction with the ON operation of the open switch, and the open drive current can be supplied to the motor, improving reliability. Can contribute to.

According to the third aspect of the present invention, the open drive current can be supplied to the motor by forcibly switching the other end of the motor to the ground in conjunction with the ON operation of the open switch. It becomes possible to contribute to the improvement of reliability.

According to the present invention as set forth in claim 4, an interlocking switch is provided between the power source and the second contact, or between the second contact and the other end of the motor. ,
The other end of the motor can be forcibly switched to the ground in conjunction with the ON operation of the open switch, the open drive current can be supplied to the motor, and the reliability can be improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 and 2 show a control circuit 1 for an automobile power window according to a first embodiment of the present invention.
2 is a circuit diagram of FIG. In the figure, the UP switch 3 is a switch for operating when raising (closing) a window glass (not shown), and the DOWN switch 5 is for operating when lowering (opening) the window glass. It is a switch. This UP switch 3 and D
The OWN switch 5 is provided on the side of the door, and is operated by a passenger of the vehicle as needed. Also, DO
The WN switch 5 is connected to the interlock switch 7,
The contacts of the interlocking switch 7 are opened and closed in conjunction with the switch operation of the DOWN switch 5.

The motor 9 rotates in the normal and reverse directions according to the current flowing in the UP direction (close driving current) and the current flowing in the DOWN direction (open driving current). The motor 9 is connected to the window glass by an arm (not shown), and the window glass can be raised and lowered by the rotation of the motor 9. In the present embodiment, the rotation of the motor 9 when raising the window glass is forward rotation, and the rotation of the motor 9 when lowering the window glass is reverse rotation. Further, a detection device (not shown) is provided to detect whether the window glass is fully closed or fully opened. The detection device may detect the position of the window glass by using an encoder or the like, or may detect the fully closed or fully opened state of the window glass by using a limit switch or the like. Furthermore, when the fully closed or fully opened state of the window glass is detected, the rotation of the motor 9 may be controlled to stop.

The battery power source 15 stores and supplies the electric energy generated by the generator mounted on the vehicle, and the UP relay 11 and the DOWN relay 13 have internal coils from the battery power source 15 respectively. The contacts are switched by supplying DC power.

Next, the normal operation of the control circuit 1 will be described with reference to FIGS. FIG. 3A shows the UP switch 3 and the DOWN switch 5.
FIG. 6 is a circuit diagram when is off.

When the UP switch 3 and the DOWN switch 5 are off, the contact point of the UP relay 11 is B
Side, the contact of the DOWN relay 13 maintains the state of being in contact with the D side. In this case, since the motor 9 is not connected to the battery power source 15 and is in a state where no current flows,
The motor 9 does not rotate.

FIG. 2B is a circuit diagram when the UP switch 3 is in the ON state. When an occupant of the vehicle turns on the UP switch 3, an operating current flows through the coil of the UP relay 11, and the contact of the UP relay 11 is switched from the state of contacting the B side to the state of contacting the A side.

In this case, the current from the battery power source 15 is transmitted through the terminal A of the UP relay 11 to the motor 9 and DO.
It flows in the IUP direction from the terminal D of the WN relay 13 to the ground. Corresponding to this current direction, the motor 9 rotates forward in the direction of closing the window glass. Then, while the UP switch 3 is in the ON state, the contact of the UP relay 11 is kept in contact with the A side, so that the motor 9 continues to rotate forward and the window glass continues to rise. When an occupant of the vehicle turns off the UP switch 3, the contact of the UP relay 11 returns from the state of contacting the A side to the state of contacting the B side. Since the motor 9 is not connected to the battery power source 15 and thus no current flows, the rotation of the motor 9 is stopped, and the window glass maintains the position at that time.

FIG. 3C is a circuit diagram when the DOWN switch 5 is in the ON state. The passenger of the car is DOW
When the N switch 5 is turned on, the DOWN relay 13
An operating current flows through the coil of, and the contact of the DOWN relay 13 is switched from the state of contacting the D side to the state of contacting the C side. Further, in conjunction with the switch operation of the DOWN switch 5, the contact of the interlock switch 7 is switched from the state of being in contact with the E side to the state of being in contact with the F side.

At this time, the current from the battery power source 15 is transmitted through the terminal C of the DOWN relay 13 to the motor 9,
It flows in the IDOWN direction from the terminal B of the UP relay 11 to the ground. Corresponding to this current direction, the motor 9 reversely rotates in the direction in which the window glass is lowered. Then, while the DOWN switch 5 is in the ON state, the contact of the DOWN relay 13 remains in contact with the C side, so that the motor 9 continues to rotate in the reverse direction and the window glass continues to descend. When an occupant of the vehicle turns off the DOWN switch 5, the contact of the DOWN relay 13 returns from the state of contacting the C side to the state of contacting the D side. At the same time, the interlock switch 7 also returns from the state in which it contacts the F side to the state in which it contacts the E side. And the motor 9
Is in a state in which no current flows because it is not connected to the battery power source 15, the rotation of the motor 9 is stopped, and the window glass maintains the position at that time.

Next, referring to FIG. 2, the control circuit 1 in the case where the connection line between the UP relay 11 and the UP switch 3 is short-circuited for some reason or the contact point of the UP relay 11 is stuck at the A side. The operation of will be described. In the figure (a), U
It is an equivalent circuit diagram when the connection wire between the P relay 11 and the UP switch 3 is short-circuited, or when the contact of the UP relay 11 is stuck at the A side.

In this case, the state becomes the same as when the UP switch 3 is turned on, and the contact point of the UP relay 11 remains in contact with the A side. Therefore, as in the case where the UP switch 3 is in the ON state, the current from the battery power source 15 passes through the A terminal of the UP relay 11 and the IUP from the D terminal of the motor 9 and the DOWN relay 13 to the ground.
Flow in the direction. Corresponding to this current direction, the motor 9
Rotate forward in the direction of raising the window glass.

FIG. 3B is an equivalent circuit diagram when the DOWN switch 5 is in the ON state.

When an occupant of a vehicle turns on the DOWN switch 5, an operating current flows through the coil of the DOWN relay 13, and the contact of the DOWN relay 13 changes from the state of contacting the D side to the state of the C side. Switch. At the same time, in conjunction with the DOWN switch 5, the contact of the interlocking switch 7 is switched from the state of being in contact with the E side to the state of being in contact with the F side.

At this time, the current from the battery power source 15 is transmitted through the terminal C of the DOWN relay 13 to the motor 9,
The current flows from the terminal A of the UP relay 11 and the terminal F of the interlocking switch 7 to the ground in the IDOWN direction. Corresponding to this current direction, the motor 9 reversely rotates in the direction in which the window glass is lowered. Then, while the DOWN switch 5 is turned on, the contact of the DOWN relay 13 remains in contact with the C side, so that the motor 9 continues to rotate in the reverse direction and the window glass continues to descend.

Therefore, in the case of this first embodiment, U
When the P switch 3 is not turned on, the motor 9
Even when the current in the P direction is supplied, the current in the UP direction supplied to the motor 9 is cut off and the current in the DOWN direction is supplied to the motor 9 in response to the ON operation of the DOWN switch 5. The window glass can be lowered.

(Second Embodiment) Next, the second embodiment of the present invention will be described.
An embodiment will be described. 3 and 4 are diagrams showing a circuit of the control circuit 21 of the vehicle power window according to the second embodiment. In the figure, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

First, the normal operation of the control circuit 21 of the automobile power window will be described with reference to FIGS. 3 (a) to 3 (c). The control circuit 21 of the second embodiment
The feature is that the interlock switch 23 is connected between the UP relay 11 and the motor 9.

FIG. 3A shows the UP switch 29 and the DOW.
It is a circuit diagram when N switch 31 is in an off state. UP
When the switch 29 and the DOWN switch 31 are off, the contact of the UP relay 25 is on the L side, and the DOWN relay 2
The contact 7 is maintained in contact with the N side. in this case,
Since the motor 9 is not connected to the battery power source 15 and is in a state where no current flows, the motor 9 does not rotate.

FIG. 7B is a circuit diagram when the UP switch 29 is in the ON state. When an occupant of the vehicle turns on the UP switch 29, an operating current flows through the coil of the UP relay 25, and the contact point of the UP relay 25 is switched from the L-side contact state to the K-side contact state.

In this case, the current from the battery power source 15 is transmitted through the terminal K of the UP relay 25 to the interlock switch 2
3 from the terminal O, the motor 9 and the terminal N of the DOWN relay 27 to the ground in the IUP direction. Corresponding to this current direction, the motor 9 rotates forward in the direction of raising the window glass. Then, while the UP switch 29 is in the ON state, U
Since the contact of the P relay 25 continues to be in contact with the K side, the motor 9 continues to rotate forward and the window glass continues to rise. Here, the passenger of the vehicle is
When is turned off, the contact point of the UP relay 25 returns from the state in which it contacts the K side to the state in which it contacts the L side. Since the motor 9 is not connected to the battery power source 15 and thus no current flows, the rotation of the motor 9 is stopped, and the window glass maintains the position at that time.

FIG. 7C is a circuit diagram when the DOWN switch 31 is in the ON state. The passenger of the car is a DO
When the WN switch 31 is turned on, an operating current flows through the coil of the DOWN relay 27, and the contact of the DOWN relay 27 switches from the state of being in contact with the N side to the state of being in contact with the M side. Further, interlocking with the switch operation of the DOWN switch 31, the contact of the interlocking switch 23 is switched from the state of being in contact with the O side to the state of being in contact with the P side.

At this time, the current from the battery power source 15 is transmitted through the terminal M of the DOWN relay 27 to the motor 9,
It flows in the IDOWN direction from the terminal P of the interlocking switch 23 to the ground. Corresponding to this current direction, the motor 9 reversely rotates in the direction in which the window glass is lowered. And DOWN
While the switch 31 is in the ON state, the contact of the DOWN relay 27 is kept in contact with the M side, so the motor 9 continues to rotate in the reverse direction and the window glass continues to descend. Here, when an occupant of the vehicle turns off the DOWN switch 31, the contact of the DOWN relay 27 returns from the state of contacting the M side to the state of contacting the N side. At the same time, interlock switch 2
The contact point 3 also returns from the state in which it contacts the P side to the state in which it contacts the O side. Since the motor 9 is not connected to the battery power source 15 and thus no current flows, the rotation of the motor 9 is stopped, and the window glass maintains the position at that time.

Next, referring to FIG. 4, the control circuit 21 when the connection wire between the UP relay 25 and the UP switch 29 is short-circuited for some reason or when the contact point of the UP relay 25 is stuck at the K side. The operation of will be described. The same figure (a)
FIG. 6 is a diagram showing an equivalent circuit in the case where the connection line between the UP relay 25 and the UP switch 29 is short-circuited or the contact point of the UP relay 25 is stuck on the K side.

In this case, the state is the same as when the UP switch 29 is turned on, and the contact of the UP relay 25 is kept in contact with the K side. Therefore, as in the case where the UP switch 29 is in the ON state, the battery power supply 15
Current from the UP relay 25, the terminal O of the interlock switch 23, the motor 9, and the DOWN relay 27.
It flows in the IUP direction from the N terminal to the ground. Corresponding to this current direction, the motor 9 rotates forward in the direction of raising the window glass.

FIG. 6B is a circuit diagram when the DOWN switch 31 is in the ON state. The passenger of the car is a DO
When the WN switch 31 is turned on, an operating current flows through the coil of the DOWN relay 27, and the contact of the DOWN relay 27 switches from the state of being in contact with the N side to the state of being in contact with the M side. At the same time, in conjunction with the switch operation of the DOWN switch 31, the contact of the interlock switch 23 switches from the state of being in contact with the O side to the state of being in contact with the P side.

At this time, the current from the battery power supply 15 is transmitted through the terminal M of the DOWN relay 27 to the motor 9,
It flows in the IDOWN direction from the terminal P of the interlocking switch 23 to the ground. Corresponding to this current direction, the motor 9 reversely rotates in the direction in which the window glass is lowered. And DOWN
While the switch 31 is turned on, the contact of the DOWN relay 27 maintains the state on the M side, so that the motor 9 continues to rotate in the reverse direction and the window glass continues to descend.

Therefore, in the case of this second embodiment, U
Even when the current in the UP direction is supplied to the motor 9 when the P switch 29 is not turned on, the UP supplied to the motor 9 according to the ON operation of the DOWN switch 31.
The window glass can be lowered by cutting off the current in the direction and supplying the motor 9 with the current in the DOWN direction.

In the above embodiment, the control circuit for the power window for the automobile has been described. However, the present invention is not limited to such a case, and the closing operation of the sunroof for the automobile can be similarly performed. It is possible.

[Brief description of drawings]

FIG. 1A is a circuit diagram of a control circuit 1 of a switchgear according to a first embodiment of the present invention in a normal state, and FIG.
Circuit diagram when the switch 3 is turned on, (c) DOW
It is a circuit diagram when the N switch 5 is turned on.

FIG. 2 is a control circuit 1 of the switchgear according to the first embodiment.
(A) Equivalent circuit diagram in the case where the connection line between the UP relay 11 and the UP switch 3 is short-circuited, (b) DOWN
It is an equivalent circuit diagram when the switch 5 is turned on.

FIG. 3A is a circuit diagram of a control circuit 21 of a switchgear according to a second embodiment of the present invention in a normal state, and FIG.
Circuit diagram when the P switch 29 is turned on, (c) D
It is a circuit diagram when the OWN switch 31 is turned on.

FIG. 4 is a control circuit 2 of the switchgear according to the second embodiment.
1, (a) an equivalent circuit diagram in the case where the connection line between the UP relay 25 and the UP switch 29 is short-circuited, (b) DO
It is an equivalent circuit diagram when the WN switch 31 is turned on.

FIG. 5 shows a control circuit 101 of a switchgear according to a conventional example,
(A) Circuit diagram during normal operation, (b) UP relay 105
6 is a circuit diagram in the case where the connection line between the switch and the UP switch 103 is short-circuited. FIG.

[Explanation of symbols]

3,29 UP switch 5,31 DOWN switch 7,23 interlocking switch 9 motors 11,25 UP relay 13,27 DOWN relay 15 Battery power

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-212582 (JP, A) Japanese Patent Publication 3-25594 (JP, B2) Actual Public Publication 3-12070 (JP, Y2) Actual Public Publication 1- 30532 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05F 15/00-15/20 B60J 1/17

Claims (2)

(57) [Claims] 1. A first relay coil is driven in response to an ON operation of an open switch for opening and closing a window provided on a vehicle, the end of a motor being opened and closed.
Is connected to a first relay contact for switching one end of the motor from the ground side to the power supply side , while the other end of the motor is turned on by a closing switch for closing the window. The second relay coil is driven by the
A second relay that switches the other end of the power supply from the ground side to the power supply side.
-The contact is connected and the closing switch is
In the control circuit of the vehicle switchgear connected to the ground side of the second relay coil, the control circuit is connected to the power supply side in conjunction with the ON operation of the open switch.
The control circuit of the vehicle opening and closing apparatus characterized by having an interlocking switch for switching the forced grounding side and the other end of said motor being. Wherein said interlock switch, power supply side of the second relay contacts, or the second re
The control circuit for a vehicle opening / closing device according to claim 1, wherein the control circuit is provided between a relay contact and the other end of the motor.