JPS61134482A - Electromotive opening and closing apparatus of car window - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to improvement of an electric window opening/closing device for automobiles.

(Prior art) Conventionally, in an electric window opening/closing device for an automobile, the motor can be driven by turning on a key switch.
Even after the key switch is released, if the operating switch is turned on within a predetermined time, the motor drive circuit will be closed, and the motor drive circuit will remain closed even if the predetermined time elapses while the motor is being driven. so that the window has a function that allows the window to be moved to a desired opening/closing position, and when the operation switch is once opened after the predetermined time has elapsed, the motor drive circuit is not closed even when the operation switch is turned on again. Things that have been made impossible are well known. A conventional example of such a device is shown in Fig. 3. In Fig. 3, when the key switch f17 is turned on, the DC power supply 11 → key switch 17 → resistor R21 → diode Dot → resistor R23 → base of transistor Tr12 A current flows in this order and the transistor Tr12 is turned on.

When the transistor Tr12 is turned on, the transistor T as a switching element is connected in series to the relay 16 having a normally open contact 16a interposed in the drive circuit of the motor 12.
nl car is turned on, the relay 16 is activated and its normally open contact 16a is closed. In this state, if the window glass raising switch 14 or the window glass lowering switch 15 of the operation switch 13 is selectively turned on as shown by the broken lines,
When the drive circuit force of the motor 12 is closed, the motor 12 rotates forward or backward, and the window glass is raised or lowered via a link mechanism (not shown) or the like.

- Next, when the key switch 17 is opened, the transistor Tr12 and the transistor Tr11 are kept on for a predetermined time due to the electric charge of the capacitor C1l that was charged through the resistor R and the diode Dll when the key switch 170 was turned on, and the relay 16 maintains operation. Here, the capacitor cti and the discharge resistor R22 of the capacitor C1l constitute a timer 18 that holds the transistor Tr11 in the on state for a predetermined period of time (for example, 30 seconds) via the transistor Tr12. Therefore, if the operation switch 13 is turned on within the predetermined time, the drive circuit of the motor 12 is closed, and even if the key switch f17 is in the open state, the window glass can be moved to the desired opening/closing position within the predetermined time. can. Further, if the predetermined time period elapses while the operation switch 13 is turned on, that is, the motor 12 is driven, the drive circuit of the motor 12 is opened, making it impossible to move the window glass. In order to prevent this, the excitation coil 1 is installed in the drive circuit of the motor 12.
9 are connected in series, and the motor 1 is connected to the excitation coil 19 between the DC power supply 11 and the transistor Tr11.
A reed relay 20 is interposed which is activated when the excitation coil 19 is excited by the flow of the drive current No. 2, and the operation of the reed relay 20 maintains the on state of the transistor Tru to continue the operation of the phosphor 16.

By keeping the normally open contact 16a closed, the drive circuit for the motor 12 is closed, allowing the motor 12 to be driven.

Then, when the operation switch 13 is opened as shown by the solid line,
The motor 12 suddenly stops due to the formation of a short circuit, and the excitation coil 19 no longer receives the drive current for the motor 12, so it becomes de-energized, the reed relay 20 becomes inactive, the transistor Trll turns off, and the relay 16 becomes inactive. In the operating state, the normally open contact 16a opens.

Note that when the key switch 17 is in the open state, even if the operating switch 13 is turned on again after the predetermined time has elapsed, the normally open contact 1
Since 6a is in the open state, the drive circuit for the motor 12 remains in the open state, so that the motor 12 cannot be driven.

However, in this conventional device, the key switch f
After opening 17, press the operation switch 1 within the predetermined time.
3 to drive the motor 12, if the predetermined time has elapsed while the motor 12 is being driven, the motor 12
An excitation coil 19 and a reed relay 20 are used to keep the drive circuit closed and enable the motor 12 to be driven. Since the driving current of the motor 12 flows through the excitation coil 19, a relatively large capacity excitation coil 19 is required, which has the disadvantage of increasing the size and cost. Furthermore, since Reedrin-20 was used, there was a risk of damage if a shock was applied during assembly or when dropped.

(Objective of the Invention) The present invention maintains the closing of the motor drive path by the voltage signal while voltage is applied to the terminals of the motor, and the excitation coil and It is an object of the present invention to provide an electric vehicle window opening/closing device that eliminates the need for reedrin and eliminates the drawbacks of the conventional devices described above.

(Structure of the Invention) The structure of the electric window opening/closing device for an automobile according to the present invention includes an operation switch connected to a drive circuit of a motor to control the drive of the motor, and a normally open contact interposed in the drive circuit of the motor. a switching element that is turned on when the key switch is turned on to operate the relay and close the normally open contact; and a timer that is activated when the key switch is opened and keeps the switching element in the on state for a predetermined period of time. In the electric window opening/closing device for an automobile, a motor drive continuation means is provided for turning on the switching element according to the voltage signal to continue driving the motor while a voltage is applied to the terminals of the motor. It is characterized by

(Example) The present invention will be described below based on an example shown in FIG.

In FIG. 1, numeral 1 is a DC power supply mounted on an automobile, the negative electrode of which is grounded. 2 is a pair of terminals 2a, 2b
It is a motor with 3 is an operation switch connected to the drive circuit of the motor 2 to control the drive of the motor 2;
The operation switch 3 consists of a window glass raising switch 4 and a window glass lowering switch 5. The window glass raising switch 4 is connected to a DC power source 1 via a normally open contact 6a, which will be described later.
The window glass lowering switch 5 has a normally open fixed contact 4a connected to the positive electrode of the windowpane lowering switch 5, a grounded normally closed fixed contact 4b, and a movable contact piece 4c connected to one terminal 2a of the motor 2. , a normally open fixed contact 5a connected to the positive electrode of the DC power supply 1 via the normally open contact 6a, a grounded normally closed fixed contact 5b, and a movable contact piece 5C connected to the other terminal 2b of the motor 2. has. Here, 1. As shown in the figure, the movable contact piece 4
A state where c and 5c are in contact with fixed contacts 4b and 5b, respectively, indicates that the operation switch 3 is in an open state.

A state in which the movable contact piece 4C is in contact with the fixed contact 4a or the movable contact piece 5C is in contact with the fixed contact 5a indicates that the operation switch 3 is in the closed state. In this operation switch 3, when the movable contact piece 4c is in contact with the fixed contact 4a, the other movable contact piece 5C is always in contact with the fixed contact 5.
Contact b.

The structure is such that when the movable contact piece 5C is in contact with the fixed contact 5a, the movable contact piece 4C is always in contact with the fixed contact 4b.

6 is a relay having a normally open contact 6a interposed in the drive circuit of the motor 3, one end of which is connected to the connection point between the positive electrode of the DC power supply 1 and the normally open contact 6a, and the other end is connected as a switching element. It is connected to the collector of transistor Trl.

7 is a key switch. One end of a capacitor C1 is connected in series with the key switch 7 via a resistor R1 and a diode D1, and the other end of the capacitor C1 is grounded. R2 is a resistor for discharging the capacitor C1, and is connected in parallel to the capacitor c1. This resistor R2 and capacitor c1 are activated when the key switch 7 is opened to turn on the switching element Tr1 for a predetermined time. A timer 8 is configured to maintain the state. The base of the transistor Tr2 is connected to the connection point between the diode D1 and the capacitor fcxf via the base resistor R3.

The collector of the transistor Tr2 is connected to the positive electrode of the DC power supply l via a resistor peak, and the emitter thereof is grounded via a resistor R5. Further, the base of the transistor Trl is connected to the connection point between the emitter of the transistor Tr2 and the resistor R5, and the emitter is grounded.

One terminal 2a of the motor 2 is connected to the base of a transistor Trl via a diode and a resistor R6 as motor drive continuation means, and the other terminal 2a is connected to the base of a transistor Trl.
b is connected to the base of the transistor Tr1 via a diode D3 and a resistor R6, which serve as motor drive continuation means.

In other words, the diode D2 serves as a means to continue driving the motor.
, D3 are a pair of terminals 21L of the motor 2, respectively.

2b and the input stage of the switching element Trl. Note that C2 is a protective capacitor for the transistor Tr1.

Next, the operation of the above configuration will be explained.

When the key switch 7 is turned on, a current flows in the order of DC power supply 1 → key switch 7 → resistor R1 → diode D1 → base resistor R3 → transistor Tr2, and the transistor T
r2 is turned on. When the transistor 2 is turned on, the base potential of the transistor Trl goes to a high level, turning the transistor Trl on, operating the subv-6 and closing its normally open contact 6a. In this state, when the window of the operation switch 3 is selectively turned on as shown by the dashed lines, the window glass raising switch 4 or the window glass lowering switch 5 is selectively turned on as shown by the broken lines, the drive circuit of the motor 2 is closed and the motor 2 is in the correct position. The window glass is driven in a rotating direction or a reverse direction, and the window glass is raised or lowered via a link mechanism (not shown) or the like. When the key switch 7 is opened, the resistor R1 and diode D are connected when the key switch 7 is turned on.
The transistor Tr2 maintains the on state due to the electric charge of the capacitor C1 of the timer 8, which has been charged through the transistor Tr1, and the base potential of the transistor Trl remains at a high level, so that the transistor Trl also maintains the on state. Therefore, the operation of the relay 6 is maintained and the normally open contact 6a is maintained in the closed state. These transistors Tr2 and Trr.

The ON state is maintained for a predetermined period of time (for example, 30 seconds) based on a discharge time constant determined by the capacitance of the capacitor C1 constituting the timer 8 and the resistance value of the discharge resistor R2. Therefore, if the operation switch 3 is turned on within the predetermined time, the drive circuit of the motor 2 is closed, and even if the key switch 7 is in the open state, the motor 2 is driven within the predetermined time to move the window glass as desired. Can be moved to open and closed positions.

The operation up to this point is the same as that of the conventional device shown in FIG.

Next, after the key switch 7 is opened, the window glass raising switch 4 or the window glass lowering switch 5 of the operating switch 3 is turned on within the predetermined time, that is, the motor 2
If the predetermined time has elapsed while the is being driven,
The base potential of the transistor Trz becomes low level, and the transistor Tr2 is turned off. However, when the window glass raising switch 4 is turned on, the i emator 2
The voltage signal applied to one terminal 2a of the motor 2 is input to the base of the transistor Trl via the diode D2 and the resistor, and when the window glass lowering switch 5 is turned on, the voltage signal is applied to the other terminal of the motor 2. Since the applied voltage signal is input to the base of the transistor Tr1 through the diode D3 and the resistor R6', the transistor Tr1 still maintains the on state even when the transistor 2 is turned off, and the The normally open contact 6a of No. 6 is kept closed to continue driving the motor 2. Therefore, even if the predetermined time period elapses while the motor 2 is driving, the driving of the motor 2 is continued and the window is closed. The lath can be moved to the desired opening/closing position.After that, when the window glass raising switch 4 or the window glass lowering switch 5 is opened, a short circuit is formed in the motor 2 and the motor 2 stops suddenly. Since no voltage is applied to terminals 2a and 2b of

Transistor Trl is turned off, relay 6 is deactivated, and its normally open contact 6a is opened.

If the main purpose is to completely lock the door, the predetermined period of time has elapsed only when the operating switch 3 (actually, the window raising switch 4) is turned on in the direction of raising the window glass. All you have to do is to continue driving motor 2.

In that case, only one terminal 2a of the motor 2 may be directly connected to the base of the transistor Trl, and the other terminal 2a may be left unconnected.

Here, when the key switch 7 is in the open state, even if the operating switch 3 is turned on again after the elapse of the predetermined time, the normally open contact 6
Since a is in the open state, the drive circuit of the motor 2 remains in the open state, and no voltage is applied to the pair of terminals 2a and 2b of the motor 2.

Therefore, the transistor Trl remains in the off state, and the relay 6 cannot be operated and the motor 2 cannot be driven. Therefore, if the driver leaves the key switch 7 open when leaving the car, the window glass will remain stopped even if, for example, a child turns on the operation switch 3 without permission after the predetermined time has elapsed.
Avoid accidents where your hands or neck get pinched.

Next, FIG. 2 is a circuit diagram of another embodiment of the present invention, in which the same components as those in the embodiment of the present invention shown in FIG. Only parts will be explained.

Tr3 is a transistor as a motor drive continuation means that is turned on by a voltage signal from the terminal 2a of the motor 2, and the base of the transistor Tr3 is connected to the voltage dividing point of the resistors R7 and R8 that divide the voltage of the terminal 2a. The collector is connected to the DC power supply l via the resistor R9, and the emitter is connected to the base of the transistor Tr1.

transistor, and the transistor Tr40 is connected to terminal 2.
A resistor R1o that divides the voltage of b is connected to the voltage dividing point of R11, and its collector is connected to the DC power supply 1 through a resistor R12.
The emitter is connected to the base of the transistor Tr1. In other words, the transistor T
ra and Tr4 are the DC power supply 1 and the switching element 'l'
They are interposed in parallel between the input stages of rl.

In this embodiment, after the key switch f7 is opened, the window glass raising switch 4 or the window glass lowering switch 5 of the operation switch 3 is activated while the timer 8 is operating for a predetermined period of time.
When the predetermined period of time has elapsed while the motor 2 is turned on, that is, the motor 2 is being driven, the voltage signal applied to the terminal 2a of the motor 2 when the switch 4 is turned on When the switch 5 is turned on, the voltage signal applied to the other terminal 2b turns on the transistor Tr3, so even if the transistor Tr2 turns off after the predetermined time has elapsed, the transistor Tr3 turns on. The base potential of Trx remains at a high level, and the transistor Tr1 remains on.

Therefore, the relay 6 maintains its operation, and its normally open contact 6a
is held closed, the drive circuit for the motor 2 remains closed, and the motor 2 continues to be driven.

(Effects of the Invention) As described above, the present invention provides a motor drive continuation means that continues driving the motor using the voltage signal while voltage is applied to the terminals of the motor, thereby closing the motor drive circuit. As a result, it is possible to use simple electronic components such as diodes or transistors as a means to continue driving the motor instead of the excitation coil and reed relay required by conventional devices, which reduces the size of the device. This has the effect of making it easier to use and cheaper.

Furthermore, since no reed relay is used, there is no damage even if a shock is applied during assembly or when dropped, thereby improving reliability.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of the electric vehicle window opening/closing device according to the present invention, FIG. 2 is a circuit diagram showing another embodiment of the electric vehicle window opening/closing device according to the present invention, and FIG. is a circuit diagram showing a conventional example. 1.11...DC power supply, 2,12...motor. 2a, 2b...Motor terminal, 3.13...Operation switch, 6,16...Relay, 6a, 16a
... Normally open contact, 7.17 ... Key switch. 8.18...Timer, Trl, Trll...Transistor as a switching element, D2. D3
...Diode as a means to continue driving the motor. Tr3, Tr4...Transistors as means for continuing motor drive

Claims (1)

[Claims] 1) An operation switch connected to a motor drive circuit to control the drive of the motor, a relay having a normally open contact interposed in the motor drive circuit, and a relay that is turned on when a key switch is turned on. An electric window opening/closing device for an automobile, comprising a switching element that operates the relay to close the normally open contact, and a timer that operates when the key switch is opened and holds the switching element in an on state for a predetermined time, An electric window opening/closing device for an automobile, characterized in that, while a voltage is applied to the terminals of the motor, a motor drive continuation means is provided for turning on the switching element according to the voltage signal to continue driving the motor. 2) The motor vehicle window electric drive according to claim 1, wherein the motor drive continuation means is constituted by a diode interposed between a pair of terminals of the motor and an input stage of the switching element. Switchgear. 3) The motor drive continuation means is turned on by the respective voltage signals from the pair of terminals of the motor, and is constituted by respective diodes interposed in parallel between the DC power supply and the input stage of the switching element. An electric vehicle window opening/closing device according to claim 1, characterized in that: