JPH0223384B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field to Which the Invention Pertains] The present invention relates to a wiper control circuit that controls the operation of an automobile wiper. In particular, the rear window of an automobile has a structure in which the rear window is moved up and down by electric drive means and is equipped with a back door that can be opened and closed, and the back door is attached to the vehicle body and can be separated from the roof, which is configured to be detachable from the vehicle body. The present invention relates to a rear window wiper control circuit suitable for controlling a wiper provided on a window.

[Background of the invention]

Power windows that can be remotely controlled from the driver's seat are already in use for the rear windows of automobiles, but there has never been a rear window in the form of a power window with a wiper attached; Some cars are equipped with wipers, but none use power windows.

For regular passenger cars, there is no need to make the rear window a power window.
In van-style automobiles, etc., it is very effective to use a structure in which the rear window can be raised and lowered by remote control from the driver's seat, depending on the structure of the vehicle body or the purpose of the vehicle, and this is what the users demand.

On the other hand, during normal driving, the driver often uses a rear view mirror located in the driver's seat to check the rear view through the rear window. This is not a problem when the weather is sunny, but when it rains, rain falls on the rear window, making it difficult to see behind the vehicle, making it necessary to use wipers.

In order to meet these two demands, the present applicant has already invented and applied for a structure in which the rear window is a power window and a wiper is attached to it. In a vehicle having such a structure, if the wiper operates while the rear window is open, the wiper will be damaged. In other words, a structure is required in which the wiper operates only when the power window is completely closed, and the power window does not operate when the wiper is operating.
Furthermore, cars with this structure that allow the car body and roof to be separated are being considered, but in such cars, it is becoming increasingly necessary for power windows and wipers to work in conjunction with each other to ensure reliable operation. There is.

[Purpose of the invention]

The present invention is provided in an automobile having a structure in which the roof can be separated from the vehicle body, a back door is attached to the vehicle body so as to be openable and closable, the rear window is a power window, and the vehicle controls a wiper provided on the power window. The windshield wipers work reliably only when the power windows are closed, and when the power windows are open, the wipers do not work even if the driver accidentally operates the windshield wipers. The purpose is to provide a control circuit.

[Features of the invention]

The present invention has a structure in which a roof is removably attached to the vehicle body and a back door is separable from the roof.The back door is attached to the vehicle body and can be opened and closed by a lower hinge, and the rear window can be raised and lowered from the back door. The rear window is equipped with a drive mechanism and a motor for moving the window glass up and down, and in the wiper control circuit of the vehicle that controls the wiper installed on the rear window, the window glass is A first detection circuit detects whether the back door is closed, a second detection circuit detects whether the roof is removed from the vehicle body, and a third detection circuit detects whether the back door is opened. It is characterized by comprising a detection circuit and a circuit that prohibits driving of the wiper based on the detection output of any one of the first to third detection circuits.

[Explanation based on examples]

A device according to an embodiment of the present invention will be explained in detail based on the drawings.

Fig. 1 is an assembled rear external view of an automobile equipped with the wiper control circuit of the present invention, Fig. 2 is a roof-side rear external view of an automobile equipped with the inventive wiper control circuit with the roof separated, and Fig. 3 is the invention of the invention. FIG. 4 is an external view of the rear part of the vehicle with the roof of the vehicle equipped with the wiper control circuit in a separated state, and is a circuit diagram of the wiper control circuit of the vehicle of the present invention.

As shown in Fig. 1, this embodiment of the automobile has a structure in which the rear window is equipped with a wiper. Can go up and down. Furthermore, the back door equipped with this rear window is attached to the vehicle body via a lower hinge and can be opened and closed. Furthermore, as shown in FIGS. 2 and 3, this automobile has a structure in which the roof can be separated and removed and used as an open car.

In the wiper control circuit of the present invention shown in FIG. 4, an ignition switch 2 having a built-in wiper power contact ST1 is connected to a battery 1 serving as a power source for the control circuit via a fusible link AM1. Wiper drive contact ST
1 is the fuse of circuit breaker box 3
AM2 is connected to a terminal W of the control relay circuit 4, and this terminal W is connected to a back door warning lamp 5, which is a back door switch having an opening contact 6a and a closing contact 6b. 6 back door opening contact 6
connected to a. Further, the fusible link AM1 is connected to the terminal S of the control relay circuit 4 via the circuit breaker CB of the circuit breaker box 3.

A power window switch 7 having a rising contact 7a and a falling contact 7b is connected to terminals P1 and P2 of the control relay circuit 4, and a rising contact 8a and a falling contact 8b are connected in parallel to the power window switch 7. A power window outside switch 8 is connected to terminals P3 and P4, and the power window inside switch 7 and outside switch 8 are connected to a roof switch 9 having a contact point 9a and a disconnection point 9b. is connected to the closing contact 6b of the back door switch 6.

Furthermore, the terminal L of the control relay circuit 4
is connected to a rear window limit switch 10 that turns on when the rear window is fully closed, a power window regulator motor 11 that rotates forward and reverse in the current direction is connected to terminals M1 and M2, and a rear wiper motor A rear wiper motor circuit 12 having a rise completion switch 12b, a rise solenoid 12c and a blade retraction switch 12d is connected to terminals RS and RM,
Further, a rear wiper switch circuit 13 is connected to terminal B, and a washer motor 14 is connected to this rear wiper switch circuit 13.

The operation of the wiper control circuit of the present invention having such a configuration will be explained. As shown in FIG. 1, when the roof 20 is attached to the vehicle body 21 of the automobile, the back door 22 is completely closed, the rear window 23 is closed, and the wiper 24 is stored in the rest position 25. , roof switch 9
is connected to the arrival side contact 9a, the back door switch 6 is connected to the closing side contact 6b, the rear window limit switch 10 is connected, and the wiper motor circuit 1 is connected to the closing side contact 6b.
The second rise completion switch 12b and blade storage switch 12d are in the off state. The rest position 25 is a position in a stopped state that is outside the rotation angle of the operating state of the wiper.

At this time, when the ignition key is put in the ignition switch 2 and connected to the power contact ST1, the power is transmitted from the battery 1 through the fuse AM2 of the circuit breaker box 3, the terminal W of the control relay circuit 4, the relay coil RC4, and the terminal L. Current flows through the window limit switch 10 to ground. This current causes relay coil RC
4 is energized, and relay switch RY4 is switched to contact a.

Also, from the terminal W, there is a resistor R1, a transistor Q1
Current flows from battery 1 through circuit breaker CB, through terminal S, relay coil RC1, transistor Q1, and terminal E to earth, and the relay switch Bring RY1 into contact state.

When the rear wiper switch circuit 13 is turned on, current flows from the terminal S of the control relay circuit 4 to the relay switch RY4, through the terminal B, to the terminal B of the rear wiper switch circuit 13, and from the same terminal +1 to the rear wiper motor 12a, and the rest The wiper 24 stored in position 25 is moved onto the rear window 23 and the wiper 24 is operated. At this time, the rise completion switch 12b and the blade storage switch 12d are in a closed state.

When it is necessary to wash the rear window 23, by operating the washer button WASH, the washer motor 14 is activated and sprays out washing water.

Next, when the rear wiper switch circuit 13 is turned OFF, the current from terminal B to the rear wiper motor 12a is cut off, stopping the operation of the wiper 24, and passing from terminal C to the rise completion switch 12b to the rise solenoid 12c and terminal -S to ground, the rise solenoid 12c and rear wiper motor 12a continue to operate, and the wiper 24 is stored in the rest position 25 above the window glass. By this storage, the rise completion switch 12b and the blade storage switch 12d are activated.
The current of the rear wiper motor 12a is cut off.

Consider a case where the in-vehicle switch 7 is connected to the contact point 7b on the DOWN side in order to operate the power window. Terminal S of control relay circuit 4,
A current flows between the relay switch RY1, the emitter and base of the transistor Q2, the diode D1, the resistor R3, and the terminal E, so this current flows between the emitter and collector of the transistor Q2 of the control relay circuit 4. , energizes relay coil RC3, and flows from diode D2, terminal P2, power window interior switch 7, roof switch 9, and back door switch 6 to ground. As a result, the relay switch RY3 is connected to the contact d, and the power window regulator motor 11 is rotated in the DOWN direction from the relay switch RY1 of the control relay circuit 4 to the contact d of the relay switch RY3, and from the terminal M2. is descending.

This car is equipped with a switch 8 that allows the power windows to be moved up and down even outside the car. When power window outside switch 8 is connected to contact 8b on the DOWN side, current similarly flows from transistor Q2, relay coil RC3, diode D3, power window 8, roof switch 9, and back door switch 6 to ground, and Therefore, the power window regulator motor 11 is driven from the relay switch RY3 and the terminal M2 to lower the rear window.

To raise the power window, first connect the power window interior switch 7 to the UP side raising contact 7a, then the current passes through the transistor Q2 and excites the relay coil RC2.
Relay switch RY2 is connected to contact e side, and the current flows from diode D4, terminal P1, power window interior switch 7, roof switch 9, and back door switch 6 to ground.

As a result, current flows in the UP direction from relay switch RY1 to relay switch RY2 and through terminal M1 to power window regulator motor 11, driving this power window regulator motor 11 and driving rear window 23. to rise.

Also, power window outside switch 8 is UP.
When connected to contact 8a on the side, transistor Q2, relay coil RC2, diode D5,
Terminal P3, power window outside switch 8,
Current flows from roof switch 9 and back door switch 6 to ground, relay switch RY2 connects to contact e, and current from relay switch RY1 passes through relay switch RY2 and terminal M1 to power window regulator motor. UP 11
direction to raise the rear window 23.

Next, a case will be described in which an attempt is made to operate the wiper while the power window is open. In this state, the rear window limit switch 10 is turned off, so no current flows through the relay coil RC4. Therefore, the relay contact RY4 is connected to the contact b, and the ground potential appears at the terminal B. For this reason, the rear wiper switch circuit 13
Even if it is switched to ON, no current flows through the wiper motor circuit 12 and the wiper operation is prohibited.

Next, a case will be described in which an attempt is made to operate the power window while the wiper 24 is operating. As mentioned above, while the wiper 24 is operating, the blade retraction switch 12d of the rear wiper motor circuit 12 is closed.
A current flows from the emitter of the transistor Q3 to the base, through the terminal RS, and from the blade storage switch 12d to the ground. As a result, a voltage with the same potential as that of the emitter is applied from the collector side of the transistor Q3 to the base of the transistor Q2, and this transistor Q2 is in an off state. Therefore, the current to relay coils RC2 and RC3 is cut off, and relay switch RY2 closes contact f.
side, the contact of relay switch RY3 is connected to the c side, and the power window regulator motor 11
The power to is completely cut off from the relay switch RY1 side. That is, when the wiper 24 is operating, the power window interior switch 7 or the power window exterior switch 8
Even if I turn on the power windows will not work.

When the back door 22 is open, the power
Even if the window is operated, the ground circuit is off because the back door switch 6 is connected to the open contact 6a, and the current from the battery 1 does not flow to the relay coils RC2 and RC3. Relay switches RY2 and RY3 form a circuit to the window regulator motor 11
is off and the power windows do not operate.

Similarly, when the backdoor 22 is open, the rear window limit switch 10 is open, so if the rear wiper switch circuit 13 is turned on in an attempt to operate the wiper 24, the wiper 24 will not operate. . Furthermore, in this state, the back door warning lamp 5 lights up to notify the user that the back door 22 has been opened, so that erroneous operations are unlikely to occur.

〔Effect of the invention〕

As described above, according to the present invention, by adding a control relay to the power window and wiper drive circuit, the vehicle body and roof can be separated, the back door and rear window can be opened and closed, and the wiper can be retracted. To ensure that the wiper used for the rear window of a structural automobile operates reliably when the roof is attached to the car body, the back door is closed, and the rear window is closed, and when the car body and roof are separated and the back door and rear window are open. In some cases, it has the excellent effect of preventing wiper accidents due to discrepancies in operation by not operating the wiper in any of these conditions, and by reliably controlling the related operations of the wiper, roof, back door, and rear window. be.

[Brief explanation of drawings]

FIG. 1 is an assembled rear external view of an automobile equipped with the wiper control circuit of the present invention. FIG. 2 is an external view of the roof-side rear part of an automobile equipped with the wiper control circuit of the present invention, with the roof separated. FIG. 3 is an external view of the rear part of an automobile equipped with the wiper control circuit of the present invention, with the roof separated. FIG. 4 is a circuit diagram of a wiper control circuit for an automobile according to the present invention. 1... Battery, 2... Ignition switch, 3... Circuit breaker box, 4...
Control relay circuit, 5... Back door warning lamp, 6... Back door switch, 7
...Power window interior switch, 8...Power window outside switch, 9...Roof switch, 10...Rear window limit switch, 11...Power window regulator motor, 12...Wiper motor circuit, 13... Rear wiper switch circuit, 14... Washer motor, 20... Roof, 21... Vehicle body, 22...
Back door, 23...Rear window, 24...
Wiper, 25...Rest position.

Claims (1)

[Scope of Claims] 1 The roof is detachably attached to the vehicle body, and the back door is separable from the roof. The rear window is equipped with a drive mechanism and a motor to move the window glass up and down, and the wiper control circuit of the vehicle controls the wiper installed on the rear window. a first detection circuit for detecting whether the glass is closed; a second detection circuit for detecting whether the roof has been removed from the vehicle body; and a second detection circuit for detecting whether the back door is open. A wiper control circuit for an automobile, comprising: a third detection circuit; and a circuit that prohibits driving of the wiper based on the detection output of any one of the first to third detection circuits.