JPS61275040A - Mirror control device for vehicle - Google Patents

Abstract

PURPOSE:To allow the driving sight to be kept clear when a car makes a right urn by moving a mirror to the direction that the dead angle of the driving sight for the forward right side can be minimized, based on a signal detected by a right turn detecting means. CONSTITUTION:When signals such as a winker signal, a steering angle sensor signal, and an envelop sensor signal are detected by a right turn detecting means 1, a right turn signal is outputted to a control means 2. When receiving the above said signal, the control means 2 outputs a command signal to move a mirror section 4 by the specified amount in order to minimize the dead angle of the driving sight for the forward right side. And the said signal allows a driver 3 to drive the mirror 4. As soon as the right turn signal diminishes, the control means outputs a command signal to restore the mirror section permitting the mirror to return to the original position.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mirror control device for a vehicle, and is particularly made to reduce blind spots when turning right due to a mirror provided on the right side of a vehicle body. be.

[Conventional technology]

Currently, the exterior mirrors of wagons, cab-over trucks, buses, etc. are attached to the front pillars, doors, etc.
When making a right turn, a blind spot is created in the driver's field of vision in the direction facing the driver. This tendency is particularly noticeable in modern wagons, which have become larger to ensure rearward visibility.

Although there are some door mirrors that can be folded inward manually, it is very cumbersome to fold them every time a person makes a right turn, which impedes driving operation and is dangerous.

[Problem that the invention seeks to solve]

The present invention has been made in view of the above points, and a technical object thereof is to automatically reduce the blind spot in the driver's field of view due to the outside mirror when turning right.

[Means for solving problems]

Therefore, in order to achieve the above technical problem, the present invention provides a mirror provided on the right side of a vehicle body, a drive means for rotating this mirror to an arbitrary position, and a right turn detection for detecting a right turn operation of the vehicle. and control means for receiving a right turn operation detection signal from the right turn detection means, outputting a control signal to the drive means, and moving the mirror in a direction that reduces a blind spot in the driver's field of view on the right side of the vehicle. A technical means called a vehicle mirror control device is adopted.

[For production]

By adopting the above technical means, the mirror on the right side of the vehicle body automatically moves to a position that reduces the blind spot in the driver's field of view on the right side in response to the right turn operation by the occupant.
Even when making a right turn, the occupant can maintain a good driving field of view on the right side without affecting the driving operation.

〔Example〕

The present invention will be explained in detail below based on embodiments shown in the drawings.

FIG. 1 is a block diagram showing the configuration of this device, which is composed of right turn detection means 1, control means 2, driver 3, and mirror part 4. As input to the right turn detection means 1, a blinker signal, a steering angle sensor signal, an surrounding sensor signal, etc. are applied from the right turn operation signal output means.

When the right turn detection means 1 detects a right turn operation from these signals, it outputs a right turn signal to the control means 2. Control means 2
In response to this, a command signal is output to move the mirror part 4 by a certain amount in order to reduce the blind spot in the driver's field of view on the right side. The driver 3 drives the mirror part 4 receiving this signal. When the right turn signal disappears, the control means 2 outputs a command signal to return part of the mirror to its original position, and the mirror returns to its original position.

In this way, when turning right, visibility in the direction in which the vehicle automatically turns can be ensured.

If it is desired to prohibit the movement of the mirror when changing lanes on a highway or the like, the operation can be prohibited using a prohibition switch 5 connected to the right turn detection section 1.

Next, the configuration of each part shown in FIG. 1 will be explained in detail below.

FIG. 2 shows a case where the present invention is applied to a right side door mirror 40 of a wagon, and a housing 400 in which the door mirror 40 is provided is attached to the driver's door by stays 401 and 402.

FIG. 3 shows the internal structure of the housing 400 and the stay 402. A part of the housing 400 is a hollow cylinder 400b, and the cylinder 400b and the stays 401 and 402 are connected by bearings 406 and 407. Rotatably connected. A drive motor 403 is disposed inside the cylinder 400b, and an electric wire 409 disposed within the stay 402 is connected. This motor 4
The output shaft of 03 is equipped with a reduction mechanism 404 consisting of a plurality of gears.
is provided. Final stage gear 405 of reduction mechanism 404
is formed on the stay 401.

Here, when the motor 403 is energized, rotational force is transmitted to the final stage gear 405 via the reduction mechanism 404, and the mirror housing 406 to which the one-sided mirror is attached is moved to the stay 401.
, 402.

Next, an electric circuit that controls the above configuration will be explained. Detailed electrical circuit diagrams corresponding to the block diagram shown in FIG. 1 are shown in FIGS. 4 and 5.

FIG. 4 shows a specific example of the right turn operation signal output means, in which a flasher 601 is connected to a turn signal switch 602, and left and right turn signal lamps 603 and 604 are connected via left and right turn signal relays 605 and 607. connected. Note that a diode 606.60B for absorbing current surge is connected to the relay 605.607.

Here, the right terminal (R) of the blinker switch 602 is provided with a terminal 610 for taking out a right turn operation signal. This terminal 610 is connected to the detection circuit 1 shown in FIG.
It is connected to the.

This right turn detection circuit 1 includes an input protection circuit 101 having a noise filter consisting of a resistor and a capacitor, a waveform shaping circuit 102 consisting of a Schmitt trigger, and one-shot multi-vibration breaks 103 and 104 (TC4528BP manufactured by Toshiba).
) AND gate 105°106, delay circuit 107 using a resistor capacitor, EXOR gate 108, OR gate 1
It is composed of 09. The control circuit 2 connected to this detection circuit is an RS flip-flop 201 (Toshiba TC
40138P) Inverter 202, AND gate 203
．． 204, OR gates 205, 206, current detection transformer 207, amplifier 208 consisting of an operational amplifier, comparator 209, Zener diode 210, Schmitt trigger 211, mirror movement measurement counter 212 (RC
TC40103BE manufactured by Company A), travel amount setting switch 21
3. Consists of inverters 214 and 215.

3 is a driver (Mitsubishi Electric M54543) for driving the motor of the Mira part.

Further, the operation stop circuit 5 in FIG. 5 is provided with a prohibition switch 501 that prohibits the operation of the mirror when turning right, and a position setting switch 502 that adjusts the lowest position of the mirror.
Signals from both switches are press-fitted into the right turn detection circuit 1.

In FIG. 5, the reference numeral 7 is a power supply circuit, which includes a reverse connection prevention diode 701. Zener diode 7 for surge protection
02.3 terminal regulator 703 (Motorola MC7
805), a resistor, and a capacitor, it converts 12V from the vehicle pantry to 5V and supplies it to the circuit.

A description will be given of how the present device operates in this embodiment having the above configuration. If the driver is about to turn right and flips the blinker switch 602 to the right, the relay 602
7 becomes energized and the contact is closed. Therefore, the intermittent voltage sent from the flasher 601 is applied to the right blinker lamp 604, causing the right blinker lamp to blink. At the same time, 12V (rlj level) is applied to the WINK terminal connected to the R contact of the blinker switch 602.
voltage is applied. This voltage is the WINK of the right turn detection circuit 1.
It is input to terminal 610. For this reason, Schmitt trigger 1
The output of 02 is input to the OR gate 109, and the output 1a from the OR gate becomes the "0" level. (OR gate 1
The other input of 09 is normally at rOJ level. ) Since this signal is input to the S terminal of the one-shot multi-vibrator 103, the one-shot multi-vib break 103 outputs a "0" level pulse 1b with a constant width determined by the time constant of an external CR (capacitor and resistor). output from the terminal. At this time, it is important to set the time constant of CR to a time that has enough time for the mirror part 4 to move to the set position.

The same is true for the one-shot multi-bye break 104, which means that when la rises to "1", it stays at "0" for a certain period of time.
”. This is to eliminate the problem of the setting position of a part of the mirror changing due to a short turn-on/off operation of the blinker.

The la, lb ratio output is ANDed (logical product), and the IC is at the "1" level while the 1b signal is at the rOJ level.

This passes through a delay circuit 107 and an EXOR gate 108, and outputs a short rlJ level trigger pulse 1d at the falling edge. This is the S of the RS flip-flop 201 of the control unit 2.
Since the signal is input to the terminal, the terminal Q of the RS flip-flop 201 becomes "1" level.

As a result, the output of AND gate 203 becomes "1" level, the output of OR gate 205 becomes "1" level, and 3
The motor 403 of the mirror part 4 is driven by driving the driver to flow a current in the 01-02 direction. As a result, the mirror housing 400a begins to rotate toward the front of the vehicle.

207 is a transformer for pick-amplifying the current change when the motor rotates; this output is AC amplified by the amplifier 208, converted to a rectangular wave by the comparator 209, level-converted to 0 to 5 V, and then sent via the Schmitt trigger 211. is added to the mirror movement amount measurement counter 212. A movement amount setting switch 213 is connected to this counter 212 in advance, and this setting value is preset in the counter by the trigger pulse 1a described above.
The pulse is subtracted according to the rotation of 3. When the input pulse becomes equal to the set value, the W terminal of the counter 212 becomes the "0" level, which is inputted to the ffl terminal via the inverter 215. At this point, the counter 212 stops counting. This signal 2a is input to the R terminal of the RS flip-flop mentioned above, and is input to the Q terminal of the RS flip-flop 201.
The terminal becomes rOJ level, AND gate 203, OR
The output of the gate 205 becomes "0" level, the motor driver 3 stops outputting current, and the motor 403 stops. Therefore, the door mirror 40 moves from the state before right turn shown in FIG. 6 to the state at the time of right turn shown in FIG. 7. In addition, D m in FIG.

Dpl indicates the blind spot caused by the mirror and the pillar before turning right, and in FIG. 7, Dm2°D p t indicates the blind spot caused by the mirror, □, and the blind spot caused by the pillar when turning right.

It is clearly seen from FIGS. 6 and 7 that the blind spot due to the door mirror 40 on the right front of the vehicle is reduced when turning right.

Next, when the right turn is completed and the blinker switch 602 is returned to its original state, the WINK terminal becomes OV (rOJ level), and therefore the output 1a of the Schmitt trigger 102 via the OR gate 109 becomes the "1" level.

The single output of the one-shot multi-by-break 103 returns to the "1" level after a while after the Mira part moves to the predetermined position, but the output of the 104 becomes the rOJ level for a certain period of time at the rise of 1a. , when this output returns to the "1" level, the AND gate 1 that receives these outputs returns to "1" level.
The output of 05 becomes "1" level, and therefore AND gate 1
The output 1C of 06 becomes ``1'' level, and at its rise, the output of EXOR gate 108 emits a short ``1'' level trigger pulse 1d. Therefore, RS Frisobfurofup 2
The Q output of 01 becomes "1" level, and this time, the outputs of AND gate 204 and OR gate 2o6 become "1", contrary to the previous one.
level, and a current flows in the motor 403 in the 02-01 direction. As a result, the motor 403 rotates in the opposite direction by the amount set by the aforementioned movement amount setting switch 213, returning to the original normal mirror position (the position shown in FIG. 6).

From the above explanation, it can be seen that a part of the mirror moves a certain amount by the turn signal when turning right, and returns to its original position exactly when the turn signal is turned off.

The prohibition switch 501 and the position setting switch 502 have their middle point and one side contact connected to 5V, respectively. Now, when the prohibition switch is turned on, the signal 5INH goes to the "1" level, and the "1" level signal is input to the OR gate 109, so the output of the OR gate 107 remains at the "1" level, and when turning right, the WINK Even if the signal reaches the "1" level, the motor will not be driven.

The position setting switch is used by the driver to determine the optimum mirror position; when it is turned to the SR side, the signal SR becomes the "1" level, which is directly connected to the 11 terminal of the motor driver 3 via the OR gate 205. '' level signal is applied, and as a result, the mirror 4 moves in a fixed direction while the SR signal is at the ``1'' level. If the SL signal is "1", a part of the mirror 4 is sent in the opposite direction to the SR.
moves.

The mirror position set by this switch becomes the initial position when automatically driving the mirror.

It goes without saying that it is clear from Figure 2 that the forward visibility is not affected by the installation of this device. Regarding rear visibility, when the device is in operation, it cannot be obtained from the right door mirror, but apart from changing lanes, when turning right, visibility in the direction of the turn is much more important, and it is effective in the sense of expanding the necessary visibility. It is. If the driver changes lanes frequently, it would be more troublesome if the mirror moved each time, so the operation using the prohibition switch 501 is prohibited at that time.

It goes without saying that the present invention is not limited to the above-described embodiments, but can be implemented in various ways.

For example, the following modifications are possible.

In the above embodiment, the mirror part 4 is driven by a motor, but this can also be achieved by using a solenoid or the like.

It is also possible to use a pulse motor.

The drive is not limited to gears, but any belt, rim, etc. may be used.

Further, as a sensor for detecting a right turn, a steering angle (steering wheel cut) sensor, a direction sensor, etc. can be used.

Further, although the amount of mirror movement (motor rotational speed) is detected by pick-amplifying the current change using a transformer, it is also possible to use a resistor instead of the transformer to perform current-voltage conversion and detect this. Alternatively, a rotation sensor may be installed separately to detect the amount of movement.

[Effects of the Invention] As described above, according to the present invention, it is possible to maintain a good driving field of view to the right side when turning right without complicating driving operations, so that the road condition on the right side when turning right can be maintained. This has the excellent effect of being able to accurately determine information and preventing collisions and the like at intersections.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of the device of the present invention, and FIG.
The figure is a perspective view of a wagon equipped with the device of the present invention, FIG. 3 is a partially enlarged sectional view of FIG. 2, and FIGS. 4 and 5 are detailed electrical circuit diagrams of the components shown in FIG. FIGS. 6 and 7 are schematic diagrams showing the state of the mirror at the right turn section and at the time of right turn, respectively. DESCRIPTION OF SYMBOLS 1... Right turn detection means, 2... Control means, 3... Driver (driving means), 4... Mirror, 40... Door mirror. 403...Motor, 602...Blinker switch. 601... Flasher, 603.604... Turn signal lamp.

Claims (1)

[Scope of Claims] A mirror provided on the right side of a vehicle body, a drive means for rotating the mirror to an arbitrary position, a right turn detection means for detecting a right turn operation of the vehicle, and a right turn detection means for detecting a right turn operation of the vehicle. A vehicle mirror control comprising: a control means that receives a right turn operation detection signal, outputs a control signal to the drive means, and moves the mirror in a direction that reduces a blind spot in the driving field of view on the right side of the vehicle. Device.