JPH11123986A - Mirror controller for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mirror controller for vehicle capable of supplying a wide visual field angle without using an aspherical mirror or the like. SOLUTION: When an operation switch 1 is turned on, an energizing control means 12 logically-synthesizes the output signals of a first and a second timers 4, 6 through NAND gates 5, 7, and energizing is applied to a mirror driving motor 11 in the energizing direction F (one direction) for the time T. After a door mirror is turned to the outside from a prescribed position, energizing is applied to the mirror driving motor 11 in the energizing direction R (reverse direction) for the time T to turn the door mirror to the inside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle mirror control device in which a view angle can be changed by rotating a vehicle outer mirror or a mirror body of the vehicle outer mirror.

[0002]

In recent years, an outer mirror, for example, a door mirror of an automobile as a vehicle, sometimes employs an aspherical mirror so as to secure a wider viewing angle than a normal mirror. By employing this aspherical mirror, the driver can recognize the situation behind the vehicle in a wider range when changing lanes while traveling on a wide road such as three lanes. Can be enhanced.

[0003] However, since the mirror image of the aspherical mirror is unnaturally distorted, a phenomenon called so-called "mirror sickness" may occur for some drivers, which makes the driver feel sick during driving. It is pointed out.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle mirror control device that can obtain a wide viewing angle without using an aspherical mirror or the like.

[0005]

In order to achieve the above object, a vehicle mirror control device according to claim 1 is provided.
A mirror driving motor for rotating a vehicle outer mirror or a mirror main body of the vehicle outer mirror in a direction corresponding to an energizing direction; an operation switch; and when the operation switch is turned on, the mirror driving motor has a time relative to the mirror driving motor. T
And energization control means for controlling the energization direction so that energization is performed in one direction only, and then energized in the reverse direction for a time T.

With this configuration, when the driver momentarily turns on the operation switch, the energization control means energizes the mirror driving motor in one direction for a time T and then reverses the current for a time T. By energizing in the direction, the outer mirror or the mirror body of the outer mirror rotates in one direction from a predetermined position and then rotates in the opposite direction to return to the predetermined position. Therefore, the driver can operate the outer mirror or the outer mirror body by the simple operation to set the time T to the outer mirror.
It is possible to obtain a wide viewing angle according to the range of rotation within the camera.

In this case, as described in claim 2, the energization control means is provided on one terminal side of the mirror driving motor, and connects the one terminal to a power supply in accordance with energization of the excitation coil. 1 to switch between ground side and earth side
A relay, a second relay provided on the other terminal side of the mirror driving motor, for switching the connection of the other terminal between a power supply side and a ground side in accordance with energization of an excitation coil, and an operation switch of the operation switch Time 2 from the point when it was done
A first timer that outputs a high-level signal for T, a second timer that outputs a high-level signal for a time T from the time the operation switch is turned on, and an output signal of the first and second timers. While both the excitation coils of the first relay are energized while both are at the high level, the excitation of the second relay is energized while the output signal of the first timer is at the high level and the output signal of the second timer is at the low level. It is preferable to include a logic circuit for performing logic synthesis so that only the coil is energized.

With this configuration, the logic circuit of the power supply control means logically combines the output signals of the first and second timers and sequentially supplies power to the exciting coils of the first relay and the second relay for a time T. Thereby, the energizing direction to the mirror driving motor is switched. Therefore, the power supply control means can be simply configured.

According to a third aspect of the present invention, the power supply control means performs logic synthesis so as to invalidate a new ON operation of the operation switch while power is supplied to the mirror driving motor. It is preferable that the logic circuit is configured to include a logic circuit. With such a configuration, the energization control means invalidates a new on-operation while the mirror driving motor is operated by the operation switch being once turned on, so that the outer mirror or the mirror body of the outer mirror is turned off. The intended turning operation can be reliably performed.

Further, as described in claim 4, it is preferable that all the logic circuits are constituted by NAND gates, and all the logic circuits can be constituted by one kind of logic element.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a door mirror (outer mirror) of an automobile as a vehicle will be described below with reference to the drawings. FIG. 1 is a diagram showing an electrical configuration. In FIG. 1, one end of a normally open operation switch 1 is connected to a control power supply VC generated from a vehicle battery power supply VB, and the other end is connected to a resistor 2.
, And to one input terminal of the NAND gate 3. The operation switch 1 includes a momentary push switch or the like, and is provided, for example, near a steering wheel of an automobile.

An output terminal of the NAND gate 3 is connected to one input terminal of a NAND gate 5 via a first timer 4 and to both input terminals of a NAND gate 7 via a second timer 6. Have been. The first timer 4 and the second timer 6 are configured to output a high-level signal during time 2T and time T, respectively, when detecting that the input signal has become low.

The output terminal of the first timer 4 is NAN
Connected to both input terminals of the D gate 8,
The output terminal of the AND gate 8 is connected to the other input terminal of the NAND gate 3. Incidentally, the NAND gates 7 and 8 are substantially used as inverters because the two input terminals are connected in common.

These first and second timers 4 and 6 are:
Commercially available timer IC (with two built-in timers)
Can be used, and the setting of time 2T and time T is
This can be performed by connecting a resistor and a capacitor to the control input terminal of the timer IC and appropriately adjusting the magnitude of the time constant given.

The first and second relays 9 and 10 are provided with exciting coils 9C and 10C and changeover switch type relay switches 9S and 10S. The output terminal of the NAND gate 5 is connected to the battery power supply VB via the exciting coil 10C, and the output terminal of the NAND gate 7 is connected to the other input terminal of the NAND gate 5 and the exciting coil It is connected to the fixed contact 9a of the relay switch 9S via 9C. In addition, four NA
As the ND gates (logic circuits) 3, 5, 7, and 8, one commercially available logic circuit IC (for example, one having four pins and four elements built-in) may be used.

Fixed contact 10a of relay switch 10S
Are connected to the battery power supply VB and to the fixed contact 9a of the relay switch 9S. Also,
The fixed contact 9b of the relay switch 9S and the fixed contact 10b of the relay switch 10S are both connected to the ground. The movable contact 9c of the relay switch 9S is connected to one terminal 11a of a mirror driving motor (hereinafter simply referred to as a motor) 11, and the relay switch 9S
The S movable contact 10c is connected to the other terminal 11b of the motor 11.
It is connected to the.

The motor 11 is for rotating a door mirror (not shown) of the automobile.
(The energizing direction F), the door mirror is turned outward (i.e., in the right-hand side of the driver's seat side, counterclockwise to the traveling direction of the vehicle).
When power is supplied in the direction from the terminal 11b to the terminal 11a (power supply direction R), the door mirror is turned inward (clockwise on the driver's seat side).

The movable contacts 9c and 10c of the relay switches 9S and 10S are connected to the fixed contacts 9b and 10b when no power is supplied to the exciting coils 9C and 10C, and the power is supplied to the exciting coils 9C and 10C. Is performed, the connection is switched to the fixed contacts 9a and 10a. The components excluding the operation switch 1 and the motor 11 from the above constitute the energization control means 12.

Next, the operation of the present embodiment will be described with reference to FIG. It is assumed that the door mirror is at a predetermined position in which the viewing angle has been adjusted by the driver before the driving of the automobile starts. Then, it is assumed that, for example, when the driver changes lanes while driving the automobile, the operation switch 1 is turned on at time A in order to know the situation behind the vehicle in a wider range. Then, at that moment, one input signal of the NAND gate 3 becomes high level (see FIG. 2A).

In an initial state before the operation switch 1 is turned on, the output signal of the first timer 4 is at a low level, and the other input signal of the NAND gate 3 is at a high level (see FIG. 2B). ). Therefore, when the operation switch 1 is turned on, the output signal of the NAND gate 3 goes low (see FIGS. 2A and 2B).
Then, the input signals of the first timer 4 and the second timer 6 change from the high level to the low level, so that the output signals of the first timer 4 and the second timer 6 and the time 2T and T respectively from the time point High level (Fig. 2
(C) and (d), see time point B).

When the output signal of the first timer 4 goes high, the other input signal of the NAND gate 3, which is the inverse of the output signal, goes low. Therefore, N
The output signal of the AND gate 3 changes to the high level at the same time when the output signal of the first timer 4 changes to the high level (see FIGS. 2B and 2C, time point B). by this,
Time 2 during which first timer 4 outputs a high-level signal
During T, even if a new ON operation of the operation switch 1 is performed, it is invalidated. In addition, time point A
The interval between -B is actually a very short time, but is exaggerated in FIG.

Here, the output signals of the NAND gates 5 and 7 and the initial state of the output are the first and second timers 4 and 6 respectively.
Are both at the low level because both of the output signals are at the low level. From this state, when both the output signal and the output signal change to the high level, the output signal of the NAND gate 7 goes to the low level (see FIG. 2 (f), time point B). Therefore, the output signal of the NAND gate 5 goes to the high level. (See FIG. 2 (e), time point B).

When the output signal of the NAND gate 7 goes low, the exciting coil 9C of the first relay 9 is energized, and the movable contact 9c of the relay switch 9S switches from the fixed contact 9b to the 9a. Then, motor 1
1 is a battery power supply VB, contacts 10a, 9a and 9c,
Electricity is supplied in the path of terminals 11a → 11b, contacts 10c and 10b, and the ground, that is, in the electric conduction direction F. Then, the motor 11 rotates the door mirror outward from the predetermined position.
This state continues from time B for a time T (for example, 5 seconds) during which the output signal of the second timer 6 is at the high level.

When the time T has elapsed from the time point B, the output signal of the second timer 6 goes low (see FIG. 2D, time point C). Then, the inverted NAND gate 7
Changes to a high level, thereby causing N
The output signal of the AND gate 5 changes to the low level (see the time point C in FIGS. 2E and 2F).

When the signal goes high, the first
The energization of the exciting coil 9C of the relay 9 is stopped, the movable contact 9c of the relay switch 9S is switched from the fixed contact 9a side to the 9b side, the signal becomes low level, and the second relay 1
0 excitation coil 10C is energized, and the relay switch 10
The S movable contact 10c switches from the fixed contact 10b side to the 10a side.

Then, the motor 11 is driven by the battery power supply VB
, Contacts 10a, 10c, terminal 11b → 11a, contact 9
Electric current is supplied in the path of the electric currents c, 9b and the ground, that is, in the electric current direction R. Then, the motor 11 rotates the door mirror inward. This state continues from time C for a time T during which the output signal of the first timer 4 is at the high level.

Then, when the time T elapses from the time point C,
When the output signal of the first timer 4 becomes low level, the output signal of the NAND gate 5 changes to high level, and the power supply to the motor 11 is stopped (FIG. 2).
(E), see time point D).

That is, when the motor 11 is energized in the energizing direction F (one direction) for the time T, the door mirror
When the motor 11 is rotated outward from the predetermined position for a time T, and then the motor 11 is energized in the energizing direction R (reverse direction) for the time T, the door mirror is moved from the rotated position for a time T. During this time, and returns to the originally specified position.

As described above, according to the present embodiment, when the operation switch 1 is turned on, the energization control means 12 energizes the motor 11 in the energization direction F for a time T,
After turning the door mirror outward from a predetermined position, the motor 11 is energized in the energizing direction R for a time T,
The door mirror is rotated inward.

Therefore, when the driver turns on the operation switch 1 with one push, the door mirror automatically swings. For example, when changing lanes on a wide road having three or more lanes. In addition, the rear situation such as another lane can be known in a wide range without using an aspherical mirror or the like for the mirror body, so that safety can be improved.

According to the present embodiment, the power supply control means 1
2 is constituted by the first and second relays 9 and 10, the first and second timers 4 and 6, and the NAND gates 3, 5, 7 and 8, so that two relays, one timer IC and one Can easily be configured with the logic circuit IC.

Further, according to the present embodiment, the power supply control means 1
2 is to invalidate a new ON operation of the operation switch 1 while the motor 11 is energized, so that an unnecessary input signal is supplied to the first and second timers 4 and 6. Therefore, the desired turning operation of the door mirror can be reliably performed.

The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications or extensions are possible. When the driving capability is insufficient, the NAND gates 7 and 9 may be of an open collector type, or a driving transistor may be added to the output side. An inverter gate may be used instead of the NAND gates 3 and 5. The mirror driving motor is not limited to a motor for rotating the door mirror itself, and may be a motor for rotating the mirror body of the door mirror. The time T is not limited to 5 seconds and may be changed as appropriate. The present invention is not limited to door mirrors, and can be applied to any outer mirror such as a fender mirror, and can be applied to general vehicles without being limited to automobiles.

[0034]

Since the present invention is as described above,
The following effects are obtained. According to the vehicle mirror control device of the first aspect, when the operation switch is turned on, the energization control means energizes the mirror driving motor in one direction for the time T, and then energizes the mirror driving motor for the time T. When the driver turns on the operation switch momentarily, the outer mirror or the mirror body turns in one direction from a predetermined position and then turns in the opposite direction. To return to the predetermined position. Therefore, the driver can obtain a wide viewing angle according to the range in which the outer mirror or the mirror body rotates within the time T by a simple operation, and can enhance safety.

According to the vehicle mirror control device of the present invention, the power supply control means is provided on the first and second terminals of the mirror driving motor on the one and second terminal sides, respectively.
A relay, first and second timers that output a high-level signal for a time 2T and a time T from a time point when the operation switch is turned on, and output signals of the first and the second timers which are both at a high level. The logic synthesis is performed such that only the exciting coil of one relay is energized, and only the exciting coil of the second relay is energized while the output signal of the first timer is at a high level and the output signal of the second timer is at a low level. Since the configuration includes the logic circuit, the power supply control means can be easily configured.

According to the vehicle mirror control device of the third aspect, the power supply control means performs logic synthesis so as to invalidate a new ON operation of the operation switch while power is supplied to the mirror driving motor. Since the configuration includes a logic circuit that performs the above operation, the outer mirror or the mirror main body of the outer mirror can reliably perform the intended rotation operation.

According to the vehicle mirror control device of the fourth aspect, since all the logic circuits are constituted by NAND gates, the energization control means can be more easily constituted by using one kind of logic element.

[Brief description of the drawings]

FIG. 1 is a diagram showing an electrical configuration according to an embodiment of the present invention.

FIG. 2 is a timing chart.

[Explanation of symbols]

1 is an operation switch, 3, 5, 7, and 8 are NAND gates (logic circuits), 4 and 6 are first and second timers, 9 is a first relay, 9C is an exciting coil, 10 is a second relay, 10
C denotes an exciting coil, 11 denotes a mirror driving motor, and 12 denotes a power supply control unit.

Claims (4)

[Claims] A mirror driving motor for rotating a vehicle outer mirror or a mirror main body of the vehicle outer mirror in a direction corresponding to an energizing direction; an operation switch; After energizing the motor in one direction for a time T,
A mirror control device for a vehicle, comprising: an energization control unit that controls an energization direction so that energization is performed in a reverse direction for a time T. 2. A first relay provided on one terminal side of the mirror driving motor, for switching connection of the one terminal between a power supply side and a ground side in accordance with energization of an exciting coil. A second relay that is provided on the other terminal side of the mirror driving motor and that switches connection of the other terminal between a power supply side and a ground side in accordance with energization of an exciting coil; and that the operation switch is turned on. A first timer that outputs a high-level signal for a time 2T from the time when the operation switch is turned on, a second timer that outputs a high-level signal for a time T from the time when the operation switch is turned on, and the first and second timers While both output signals are high level, only the exciting coil of the first relay is energized, and the output signal of the first timer is high level and the output signal of the second timer is high. Signal vehicle mirror control apparatus according to claim 1, characterized in that it is configured to include a logic circuit for logically combining to perform energization only the exciting coil of the second relay between the low level. 3. The energization control means includes a logic circuit for performing logic synthesis so as to invalidate a new ON operation of the operation switch while energizing the mirror driving motor. The mirror control device for a vehicle according to claim 2, wherein: 4. The mirror control device for a vehicle according to claim 2, wherein the logic circuits are all constituted by NAND gates.