JPH0516492U - Electric retractable mirror actuating device - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the operation of the operation switch of the electric retractable mirror and to give a margin for driving and other operations. A configuration is such that a relay unit electrically energized for a certain period of time in response to an operation of an operation switch drives a mirror by supplying a voltage to a motor, and a current flowing through the relay unit. Is detected and the mirror reaches the first position or the second position and the current flowing through the relay means becomes zero, the relay operation stop circuit stops the operation of the relay means.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an actuator for an electric retractable mirror.

[0002]

[Prior Art]

 As shown in FIG. 2, the conventional electric retractable mirror has a structure in which a switch S directly controls a motor M for directly rotating and driving the mirror MR via a connector. When moving the mirror in the first position F to the second position K, the power of the power supply B is operated while the first contact S1 of the operation switch is kept pressed (ON state). It is supplied to the motor M through the terminal KS of the switch, the motor M rotates, and the sliding terminal ST moves from the first position F to the second position K on the fixed terminal FT in conjunction with the movement of the mirror MR. Keep sliding. When the mirror MR reaches the second position K 1 and the terminal circuit composed of the sliding terminal ST and the fixed terminal FT is opened, the mirror MR stops at the second position.

When moving from the second position K to the first position F, if the second contact S2 of the operation switch is kept pressed, the power of the power supply B is in turn supplied via the terminal FS of the operation switch to the motor. It is supplied to M, the motor M rotates in the reverse direction, and the sliding terminal ST continues to move on the fixed terminal FT from the second position K to the first position F in conjunction with the movement of the mirror MR. Similarly, when the first position F is reached and the terminal circuit composed of the sliding terminal ST and the fixed terminal FT is opened, the mirror MR stops at the first position F.

[0004]

[Problems to be solved by the device]

 The conventional electric retractable mirror MR moves while the first or second contacts S1 and S2 of the operation switch are pressed (ON state), but when the operation switch is released, the terminal FS or the terminal Since KS is turned off, the electric power of the power source B is not supplied to the motor M, so that the motor M and the mirror MR immediately stop. In other words, when moving the mirror, there is a problem that the operator has to keep pressing the switch, and there is a problem that the margin for driving and other operations is reduced because the operation is troublesome.

[0005]

[Means for Solving the Problems]

 The electric retractable mirror actuating device of the present invention comprises a switch means including a first switch and a second switch which are turned on and off at least in response to the operation of the operation buttons in the first position and the second position, and a direct current. Power supply means for supplying a voltage, a motor for rotating the mirror to a first position or a second position, a plurality of fixed terminals and sliding for sliding on the fixed terminals in association with rotation of the motor. A terminal circuit consisting of a terminal, a relay means connected between the power supply means and the motor and electrically energized in conjunction with the switch means to energize and hold the contact, and to detect the current flowing through the relay means. When the detected current is small, the relay operation stop circuit outputs a signal for stopping the energization of the relay means.

[0006]

[Action]

 In the electric retractable mirror actuating device of the present invention having the above-described structure, for example, when the motor is at the first position, the biasing state of the relay means is maintained even if the operating button is once moved to the second position and then immediately released. It is held and drives the motor to rotate to move the mirror to the second position, and when the mirror reaches the second position, the terminal circuit opens so that no current flows to the motor and the motor and mirror stop completely. Since the current flowing through the relay contact of the relay means also becomes 0, the relay operation stop circuit releases the holding of the relay means and stops the energization.

On the contrary, when the motor is in the second position as well, even if the operation button is once operated to the first position and then released, the relay means of the relay means is operated in the same manner as described above until the first storage position is reached. The urging state is maintained, the mirror is continuously moved, and when the mirror reaches the first position, the mirror is stopped and the holding of the relay means is released to stop the urging.

[0008]

[Effect of the device]

 The actuating device of the electric retractable mirror of the present invention has the above-mentioned effect due to the above-mentioned structure. Therefore, when the mirror is moved from the first position to the second position or from the second position to the first position, the operation switch is operated. Even if the second switch or the first switch of is once turned on and then released, the mirror automatically continues to move toward the second position or the first position, and then the second position or the first position. When the position 1 is reached, the effect of automatically stopping is provided, and therefore, the operation is easy for the operator, and there is an effect that a margin is provided for driving and other operations.

[0009]

【Example】

 Next, an embodiment of the present invention will be described.

First Embodiment As shown in FIG. 1, an electric retractable mirror actuating device according to a first embodiment has a storage switch 11 and a storage switch 11 which are turned on / off in response to an operation of an operation button at a storage position and a return position, for example. And a return switch 12, a switch means 1, a DC power supply 2 for supplying a required DC voltage, a DC motor 3 for rotationally driving the mirror MR to a storage position or a return position, and a plurality of fixed terminals 41, 42 and 43. And a sliding terminal 40 that slides on a fixed terminal in synchronization with the rotation of the motor 3, a DC power source 2 and a storage relay 51 and a direct current power source 2 connected to the first fixed terminal. A relay means 5 consisting of a relay relay 52 connected to the DC motor 3 and a shunt resistor interposed between the relay means 5 and the ground. When the current flowing through the relay means 5 is zero, it is composed of a resistor 62 and a comparator 62 which compares the voltage corresponding to the current acting on the relay means detected by the detection resistance 61 with the reference voltage corresponding to the reference current. , A relay operation stop circuit 6 that outputs an operation stop signal to the storage relay 51 or the return relay 52.

The switch means 1 is composed of a storage relay 51 and a return relay 52, which will be described later, and a storage switch 11 and a return switch 12 which are electrically operated in conjunction with each other. Connection of control terminals 11C and 12C connected to a DC power source (not shown) according to operation of operation buttons, switching terminals 11A and 12A connected to each other, and terminals 11B and 12B connected to ground. The relationship is switched and controlled by the control levers 11L and 12L.

The DC power supply 2 supplies a constant voltage using, for example, the voltage of an on-vehicle battery.

The DC motor 3 is configured to generate a rotational torque sufficient to drive the mirror MR and its drive mechanism, and the terminal 31 is connected to the DC power supply 2.

The terminal circuit 4 is concentrically arranged outside the first fixed terminal 41 with a semicircular ring-shaped first fixed terminal 41 at a constant interval, and the right end in FIG. 1 is the left end. The semi-circular ring-shaped second fixed terminal 42 formed shorter than the second fixed terminal 42 and the second fixed terminal 42 are concentrically arranged outside the right half of the second fixed terminal 42, and the upper end in FIG. 1 is formed shorter than the right end. A third fixed terminal 43 in the form of a quarter circle ring and slides on the fixed terminal in conjunction with the rotation of the mirror MR around the center of the fixed terminals 41, 42 and 43. The rod-shaped sliding terminal 40 is connected in antiparallel to each other, one end of which is connected to the other end 32 of the DC motor 3 and the other end of which is connected to the upper end of the third fixed terminal 43, and the DC motor 3 to the third fixed terminal 4 are connected. Three The first diode 44 for passing a current in the direction of, and one end connected to the other end 32 of the DC motor 3 and the other end connected to the left end of the second fixed terminal 42. The first fixed terminal 41 is connected to the storage relay 51 through the terminal C2 of the connector C at the left end of the first fixed terminal 41 in the figure.

The relay means 5 comprises a self-holding type storage relay 51 and a return relay 52 having a self-holding circuit electrically linked to the storage switch 11 and the return switch 12 of the operation button. The first switching end 51A of the storage relay 51 is connected to the DC power source 2 and the second switching end 51B is connected to the ground, and the control end 51C is the first fixing of the terminal circuit 4 via the terminal C2 of the connector C 1. It is connected to the left end of terminal 41. When the storage switch 11 is turned on (the control lever 11L is connected to the control end 11C and the storage terminal 11B) by operating the operation button as shown by the broken line in the figure, the storage relay 51 is switched to the broken line in the figure. As shown, the relay element 51L is in a state in which the first switching end 51A and the control end 51C are connected. The first switching end 52A of the return relay 52 is connected to the DC power supply 2, the second switching end 52B is connected to the earth, and the control end 52C is connected to the end 31 of the DC motor 3 via the terminal C1 of the connector C. It is connected to the. When the return switch is turned on (the control lever 12L is in contact with the control end 12C and the return terminal 12B) as shown by the solid line in the figure by operating the operation button, the return relay 52 is shown by the solid line in the figure. Thus, the relay element 52L is in a state in which the first switching end 52A and the control end 52C are connected.

The relay deactivation circuit 6 is composed of a shunt resistor having a constant resistance value, which is interposed between the storage relay 51 and the second switching ends 51B and 52B of the return relay 52 of the relay means 5 and the ground. The detection resistor 61 is connected to one input end and the second switching ends 51B and 52B of the storage relay 51 and the return relay 52 of the relay means 5, and the other input end corresponds to the shunt current reference value. It is connected to the variable resistor 63 adjusted to the value, and the output terminal is composed of the storage relay 51 and the comparator 62 connected to the control terminals of the return relay 52. When the DC motor 3 stops, the current flowing through the DC motor 3 Becomes zero, and therefore the current flowing through the relay means 5 also becomes zero, so that when the sliding terminal 40 reaches the retracted fixed position K or the reset fixed position F, the comparator. Reference numeral 63 outputs a stop signal to stop the operation of the self-holding circuit of the self-holding type storage relay 51 or the return relay 52 and stop the energization of the relay.

(Operation of the First Embodiment) In the electric retractable mirror actuating device of the first embodiment having the above-described structure, the mirror MR is at the storage position, that is, the sliding terminal 40 of the terminal circuit 4 in FIG. When moving to the return position F shown by the broken line in the storage position K shown by the solid line, the return switch 12 of the switch means 1 is shown by the solid line in the figure when the operator presses the return button of the operation button. Then, the control lever 12L is connected to the control end 12C connected to the power source and the return terminal 12B connected to the ground, and is turned on. Therefore, by energizing the coil of the return relay 52 of the relay means 5 that is electrically linked to the return switch 12, the contact is turned on, that is, the relay element 52L is a DC power source as shown by the solid line in the figure. The first switching end 52A connected to No. 2 and the control end 52C connected to the DC motor 3 are connected to each other and held by the self-holding circuit to supply power to the DC motor 3.

On the other hand, in the storage switch 11 of the switch means 1, as shown by the solid line in the figure, the control lever 11L is connected to the first switching end of the return relay to connect the first switching end 11A and the control end 11C. Connected. Therefore, since the coil of the storage relay 51 of the relay means 5 electrically linked to the storage switch 11 is not energized, the relay element 51L is connected to the ground as shown by the solid line in the figure.

The electric power supplied to the DC motor 3 via the terminal C1 of the connector C is supplied from the third fixed terminal 43 to the sliding terminal 40 shown by the solid line via the first diode 44, and Is supplied from the fixed terminal 41 to the ground via the terminal C2 by the relay element 51L of the storage relay 51. Therefore, the DC motor 3 is rotationally driven.

Further, the DC motor 3 drives the sliding terminal 40 in the counterclockwise direction and continues the rotational driving of the electric mirror MR until it reaches the return position shown by F in the drawing. When the sliding terminal 40 reaches the vicinity of the return position F, the upper end of the third fixed terminal 43 is formed to be short, so that the connection with the fixed terminal 43 is cut off, so that power is not supplied and the DC motor 3 Stops rotating.

At this time, the detection resistor 61 of the relay operation stop circuit 6 connected to the relay means 5 detects the current acting on the relay means 5 every moment, and the sliding terminal 40 of the terminal circuit 4 is the first. When the distance from the upper end of the fixed terminal 3 is exceeded, the electric power is not supplied to the DC motor 3 and the current acting on the relay means 5 becomes zero.

As a result, the comparator 62 determines that the voltage detected by the detection resistor 61 has decreased with respect to the reference voltage adjusted by the variable resistor 63, that is, the shunt current flowing through the relay means 5 has decreased. The energizing of the return relay 52 of the relay means 5 is stopped.

As described above, in the electric retractable mirror actuating device of the first embodiment, the mirror MR is automatically moved to the retracted position and stopped only by the operator pressing the return button of the operation button once. become.

Similarly, when the mirror MR is at the return position, that is, when the sliding terminal 40 of the terminal circuit 4 is at the position F shown by the broken line in the figure, the operator only pushes the storage button of the operation button once. Then, the storage switch 11 and the return switch 12 of the switch means 1 and the storage relay 51 and the return relay 52 of the relay means 5 in FIG. Is supplied to the first fixed terminal 41 of the terminal circuit 4 through the sliding terminal 40 and further supplied to the DC motor 3 through the second fixed terminal 42 to rotate the DC motor 3. , Mirror MR and sliding of terminal circuit 4 Rotate terminal 40. The current supplied to the DC motor 3 further flows to the ground via the return relay 52 of the relay means 5.

When the sliding terminal 40 reaches the storage position K shown by the solid line in the figure, the right end of the second fixed terminal 42 is formed shorter than the left end, so that the sliding terminal 40 and the second fixed terminal are formed. The connection with 42 is released, the supply of electric current to the DC motor 3 is blocked, and the rotation is stopped. Therefore, the rotation of the mirror MR and the sliding terminal 40 is stopped at the storage position, and the storage relay 51 is also biased. Be stopped.

Further, when the mirror MR is in the inclinable position (that is, when the sliding terminal 40 of the terminal circuit 4 is in the position T in the figure), when the operator presses the storage button of the operation button once, By the same operation as described above, it automatically rotates to the storage position K and is stopped.

When the return switch 12, the storage switch 11 or the emergency switch (not shown) is turned on while the mirror MR is moving to the storage position K or the return position F, the storage relay 51 and the return relay described above are used. Both 52 cause the power supply voltage to act on both ends of the DC motor 3, and as a result, the potential difference between both ends of the DC motor 3 becomes zero, so that the DC motor 3 stops immediately. At this time, since the two relays 51 and 52 are both turned on, no current flows through the detection resistor 61, so that the energization of the two relays 51 and 52 is stopped and power is supplied to the DC motor 3. It will not be done. When the return switch 12 is turned on to move to the return position K again or the storage switch 11 is turned on to move to the storage position K, the return relay 52 or the storage relay 51 operates. Then, the supply of electric power to the DC motor 3 is restarted, so that the mirror MR is moved to the return position F or the storage position K again.

(Effects of the First Embodiment) With the actuating device of the first embodiment relating to the above-described configuration and operation, the operator can press the operating button once, and the mirror MR can be automatically set to a predetermined value without continuously pressing the operating button. Since it moves to a position and then stops, it is easy to operate, and has the effect of giving the operator a margin in terms of driving and the like.

Further, in the operating device of the first embodiment, when the direct current motor 3 reaches each predetermined position and the connection with the direct current power source 2 is cut off, the control circuit 6 immediately releases the energization of the coil of the related relay. Therefore, there is an effect of reducing unnecessary power consumption of the DC power supply, that is, the on-vehicle battery and the like.

Further, since the actuating device of the first embodiment makes it possible to stop in the middle of an emergency as described above, it is possible to effectively prevent damage to the mirror MR and also to perform smooth re-operation. It is something to do.

The above-mentioned embodiment is shown as an example for the purpose of explanation, and the present invention is not limited to them, and does not contradict the spirit of the present invention described in the scope of claims for utility model registration. Modifications and additions are possible as long as possible.

For example, as a modified example of the first embodiment, a current probe that directly detects a current can be used instead of the shunt resistor 61, and the same operational effect as the first embodiment can be obtained. Play.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an operating device of an electric retractable mirror according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a conventional electric retractable mirror actuating device.

[Explanation of symbols]

 1 Switch Means 2 DC Power Supply 3 DC Motor 4 Terminal Circuit 5 Relay Means 6 Relay Operation Stop Circuit 61 Detection Resistor

Claims (1)

[Scope of utility model registration request] 1. A switch means comprising at least a first switch and a second switch which are turned on / off in response to an operation of an operation button at a first position and a second position, and a power supply means for supplying a DC voltage. A motor for rotating the mirror to the retracted position or the return position, a terminal circuit including a plurality of fixed terminals and a sliding terminal that slides on the fixed terminals in association with the rotation of the motor, and between the power supply means and the motor. A relay means that is connected and is energized in an electrically interlocked manner with the switch means to turn on and hold the contact, and a signal that detects the current flowing through the relay means and stops the energization of the relay means when the detected current is small. An electric retractable mirror actuating device comprising a relay stop circuit for outputting.