KR19980031688A - Car Room Mirror Rotator - Google Patents

Abstract

The present invention relates to a vehicle rearview mirror rotating device, which is connected through the reverse voltage preventing diodes (D5, D6) configured at the contacts of the emergency light switch (12), and the contacts (14a, 14b) of the turn signal switch (14). Connected to each of the negative gates 16 and 17 for inverting the input signal and the reverse voltage preventing diodes D5 and D6 configured at the contacts of the emergency light switch 12, respectively. A plurality of logical product gates 18 connected to the contacts 14a and 14b, respectively, for logically calculating a signal applied from the emergency light switch 12 and the turn signal switch 14 and a signal applied from the negative gates 16 and 17; 19) and a CPU 20 for comparing and determining the signals input from the plurality of logical product gates 18 and 19 to output an optional control signal, and a control signal output from the CPU 20 to a predetermined size. Decoder for converting to voltage signal and outputting (26) ), A plurality of transistors Q1-Q4 to which the voltage signal output from the decoder 26 is applied to the base terminal and switched, and field coils L1-L4 at the collector terminals of the plurality of transistors Q1-Q4, respectively. The stepped motor 28, which is connected and excited by battery power (B +) and rotates forward and backward, rotates the rearview mirror toward the lane to be changed when driving or changing U-turns while driving. It is secured.

Description

Car Room Mirror Rotator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a room mirror of a vehicle, and more particularly, to a room mirror rotating apparatus for a vehicle that rotates the room mirror toward a lane to be changed when the lane is changed or a u-turn is performed while the vehicle is being driven.

Room mirrors for cars are also referred to as inner mirrors or inside mirrors, and are installed on the front of the driver's seat to secure a rear view. In particular, the room mirror is a metal reflective film attached to the glass plate, and reflects the light incident from the rear at night to the driver's eyes to prevent the inconvenience of driving by disturbing the visibility of the front is used to have a low reflectance .

These room mirrors are watched by the driver to check the rear situation before changing lanes, turning left or right, or u-turn, and the rear view mirror can see the situation. However, the rear view mirrors on the left and right sides cannot be seen by the room mirrors, so that the side mirrors are attached to the front door side so that the rear view on the left and right sides can be seen. Therefore, conventionally, in the case of the room mirror, the driver arbitrarily adjusts the reflection angle of the room mirror according to the physique and driving habits of the driver.

In this way, the room mirrors are hardly moved in the state that the driver has once set them. Therefore, when the driver changes lanes or makes u-turns, the room mirrors are operated after checking the room mirrors and the side mirrors. After grasping the situation, I was able to drive the car in the desired direction. Therefore, if the driver does not accurately grasp the rear view, there is a problem that could cause a safety accident with the rear car at the time of lane change.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a room mirror rotating apparatus for a vehicle that allows the driver to rotate the room mirror in a direction to change lanes so that the driver can grasp the rear view more broadly and in detail. The purpose is.

1 is a circuit diagram showing a room mirror rotating device for a vehicle according to the present invention;

2A and 2B are diagrams showing output data values of a CPU to which the present invention is applied.

Explanation of symbols on the main parts of the drawings

10: turn indicator relay 12: emergency light switch

14: turn indicator switch 16, 17: negative gate

18, 19: logical product gate 20: CPU

21-24: turn indicator 26: decoder

28: stepping motor Q1-Q4: transistor

L1-L4: field coil D1-D6: diode

The present invention, in order to achieve the above object, the direction indicator light relay that is turned on or off at a predetermined period, the emergency light switch connected to the direction indicator relay to flash the emergency light, and connected to the direction indicator relay, parallel to the emergency light switch In the emergency and direction display device of the vehicle composed of a turn indicator switch connected to the emergency light and the left or right turn indicators connected to the emergency switch and the turn indicator switch flashing by battery power, the reverse voltage prevention diode configured at the contact point of the emergency light switch Connected through a negative gate for inverting the input signal connected to the contacts of the turn signal switch, and a reverse voltage prevention diode configured at the contact of the emergency light switch, and connected to the contacts of the turn indicator switch, respectively. Switch and direction indicator switch A CPU for comparing and determining a plurality of logical multiply gates that logically computes an applied signal and a signal applied from a negative gate, a signal input from the plurality of logical multiply gates, and outputting a selective control signal; Battery power is connected to a decoder which converts a control signal into a voltage signal of a predetermined magnitude, outputs a plurality of transistors to which a voltage signal outputted from the decoder is applied to a base terminal, and a field coil is connected to a collector terminal of the plurality of transistors. It is characterized by comprising a stepping motor that is excited and reverse rotation.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram illustrating a device in which a vehicle rearview mirror is rotated according to a driving direction of a vehicle.

The negative gates 16 and 17 are connected through the reverse voltage preventing diodes D5 and D6 formed at the contacts of the emergency light switch 12, and are connected to the contacts 14a and 14b of the turn signal switch 14, respectively. By inverting the signals output from the switch 12 and the turn indicator switch 14, the battery power B + applied to the turn indicator relay 10 is converted into a blinking signal of a predetermined period, and the converted blinking signal is Through the emergency light switch 12 and the direction indicator light switch 14 is input to the negative gate (16, 17) is reversed.

Logical gates (18, 19) is the output terminal of the negative gate (16, 17) is connected to the input terminal, the other input terminal through the reverse voltage prevention diodes (D5, D6) configured at the contact of the emergency light switch 12 Connected to the contacts 14a and 14b of the turn signal switch 14 to receive signals from the emergency light switch 12 and the turn signal switch 14 and the signals applied through the negative gates 16 and 17. It calculates the logical product and outputs the calculated value through the output. The logical AND gates 18 and 19 are connected to corresponding contacts of the emergency light switch 12 and the turn signal switch 14, so that two logical AND gates 18 and 19 are used.

The CPU 20 compares and judges each logical signal inputted from the logical product gates 18 and 19 to output a selective or sequential control signal. The decoder 26 converts a control signal input from the CPU 20 into a voltage signal having a predetermined magnitude, and outputs the converted signal by converting only a control signal corresponding to a plurality of control signals output from the CPU 20 into a voltage signal. Output it.

Transistors Q1-Q4 are turned on with the voltage signal output from decoder 26, and the voltage signal of decoder 26 is applied to the base terminal of transistors Q1-Q4 to switch transistors Q1-Q4. Let's do it. The transistors Q1 to Q4 have the same number of voltage signals as those output from the decoder 26.

Stepping motor 28 has a field coil (L1-L4) is coupled to the collector terminal of the transistor (Q1-Q4) is applied to the excitation of the battery power (B +) applied to the magnetic field of the field coil (L1-L4) Reverse rotation. Reverse field voltage preventing diodes D1-D4 are respectively connected in parallel to the field coils L1-L4 to prevent the reverse voltage from being applied. Stepping motor 28 is configured on one side of the room mirror to adjust the reflection angle of the room mirror.

The operation of the device for rotating the vehicle room mirror configured as described above will be described in detail.

The driver operates the turn indicator switch 14 when the driver wants to change lanes during driving of the vehicle or to change the direction of driving such as a U-turn. In addition, the emergency light switch 12 is operated to display an emergency situation. In this case, when the emergency light switch 12 and the direction indicator switch 14 are operated, the direction indicator relay 10 converts the battery power B + into a flashing signal of a predetermined period so that the emergency light switch 12 and the direction indicator switch ( 14) flash the corresponding or all turn indicators (21-24).

That is, when the driver operates the turn indicator switch 14 to the left in order to set the driving direction to the left or to change lanes, the left turn indicators 21 and 22 which are connected to the left contact 14a are first turned on the turn indicator relay. The second negative gate 17 and the contact of the emergency light switch 12, which are flashed by the blinking signal of (10) and which are connected to the left contact 14a of the turn signal switch 14, pass through the reverse voltage preventing diode D6. ) And a flashing signal are applied to the input terminal of the first logical gate 18. Accordingly, a flashing signal is applied to the input terminal of the first logical gate 18 through the left contact 14a of the first negative gate 16 and the turn signal switch 14, and the first negative gate 16 Is connected to the right contact point 14b of the turn signal switch 14, the low signal of the right contact point 14b is inverted and applied as a high signal, and the flashing signal input through the left contact point 14a is a high signal. Is approved. Therefore, the first logical gate 18 outputs the calculated high signal by performing a logical operation on the input signal.

In addition, the second negative gate 17 is connected to the left contact point 14a of the turn signal switch 14 at the input terminal of the second logical gate 19 and the right contact point 14b is connected to the other contact point. The high signal input to the negative gate 17 is inverted and applied as a low signal. Since the right contact 14b of the turn signal switch 14 is open, the low signal is applied. Accordingly, the second logical gate 19 outputs a low signal calculated by performing a logical operation on the input signal.

As described above, when the input signals are all high signals, the first and second logical gates 18 and 19 are logically calculated as the high signal, and when any one of the low signals is input, the calculated result is the low signal. . Accordingly, a high signal is input from the first logical gate 18 and a low signal is input from the second logical gate 19 to the input terminal of the CPU 20. The CPU 20 determines the input signal and determines that the vehicle is going to change lanes to the left or to drive to the left, and outputs a selective control signal to the decoder 26. That is, in the accompanying table of data values output from the CPU as shown in FIG. 2A, the first data D1 is a high signal first, and the second data D1 is a high signal first as a data value of one block. Next, the third data D3 is sequentially output as a high signal, and the fourth data D4 is sequentially output as a high signal. At this time, data that does not correspond to each of the data D1-D4 becomes a low signal.

In this manner, the CPU 20 outputs a high signal only to a suitable number of blocks selectively or sequentially. Therefore, the decoder 26 converts the control signal input from the CPU 20 into a voltage of a predetermined magnitude and applies it to the base end of the first through fourth transistors Q1 through Q4 through the corresponding data D1 through D4. do. The first to fourth transistors Q1 to Q4 are turned on with the voltage signal applied to the base end to excite the field coils L1 to L4 connected to the collector end to move the stepping motor 28 in a predetermined direction (but in the forward rotation). Rotate with). Therefore, the driver can secure the rear clock wider or to the required position when the vehicle turns left.

When the turn signal switch 14 returns to its original position from the left contact 14a after the vehicle has rotated in the left direction, a high signal or a low signal is input to the input terminals of the first and second logical gates 18 and 19, respectively. The first and second logical gates 18 and 19 are applied to the CPU 20 to output the calculated result by calculating the logically multiplied input signal, so that the CPU 20 outputs to the decoder 26. The data D1-D4 are output as shown in FIG. 2B. That is, as shown in the data output value of FIG. 2B, the fourth data D4 is a high signal as one block, the third data D3 is a high signal, and the second data D2 is a high signal. Next, the first data D1 is sequentially output as a high signal. At this time, data that does not correspond to each of the data D1-D4 becomes a low signal.

In this way, the CPU 20 selectively or sequentially outputs a high signal for the same number of blocks as in the forward rotation. Therefore, the decoder 26 converts the control signal input from the CPU 20 into a voltage of a predetermined magnitude and applies it to the base end of the first through fourth transistors Q1 through Q4 through the corresponding data D1 through D4. do. The first to fourth transistors Q1 to Q4 are turned on by the voltage signal applied to the base end to excite the field coils L1 to L4 connected to the collector end to rotate the stepping motor 28 in the reverse rotation direction. Therefore, the room mirror that was rotated forward when the turn indicator switch 14 is positioned to the left direction returns to the same original position as when the turn indicator switch 14 returns to its original position, thereby enabling normal driving.

On the other hand, if the direction indicator switch 14 is operated to the right when driving the vehicle in the right direction or changing lanes, the battery power source B + is output as a blinking signal through the direction indicator relay 10 and the right direction indicator 23 , 24 flashes, and a flashing signal is applied to the first negative gate 16 and the second logical gate 19 connected to the right contact 14b. At this time, the high signal applied through the first negative gate 16 is inverted and applied to the input terminal of the first logical gate 18 as a low signal, and the left contact 14a of the turn indicator switch 14 is applied to the other input terminal. Through the low signal is applied through the logic output value is a low signal. In addition, the low signal input to the second negative gate 17 is inverted and applied to the input terminal of the second logical gate 19 as a high signal, and the high signal is applied to the other input terminal so that the high signal calculated after logic operation is applied. It is output through the output stage.

Therefore, the CPU 20 determines the signals applied through the first and second logical gates 18 and 19 and outputs control signals sequentially or selectively to the decoder 26. The decoder 26 converts the input control signal into a voltage signal having a predetermined size and outputs data as shown in FIG. 2B. That is, in the table showing the data values output from the CPU, the fourth data D4 is the high signal first, the third data D3 is the high signal, and the second data is the first data value. A high signal D2 is next and the first data D1 is sequentially output as a high signal. At this time, data that does not correspond to each of the data D1-D4 becomes a low signal.

In this manner, the CPU 20 outputs a high signal only to a suitable number of blocks selectively or sequentially. Therefore, the decoder 26 converts the control signal input from the CPU 20 into a voltage of a predetermined magnitude and applies it to the base end of the first through fourth transistors Q1 through Q4 through the corresponding data D1 through D4. do. The first to fourth transistors Q1 to Q4 are turned on by a voltage signal applied to the base end to excite the field coils L1 to L4 connected to the collector end to move the stepping motor 28 in a predetermined direction (but reverse rotation). If it is rotated). Therefore, the driver can secure the rear clock at the right turn of the vehicle to a wider or required position.

When the turn signal switch 14 returns to its original position from the left contact 14a after the vehicle has rotated to the right, high or low signals are input to the input terminals of the first and second logical gates 18 and 19, respectively. The first and second logical gates 18 and 19 are applied to the CPU 20 to output the calculated result by calculating the logically multiplied input signal, so that the CPU 20 outputs to the decoder 26. The data D1-D4 are output as shown in FIG. 2A. That is, as shown in the data output value of FIG. 2A, the first data D1 is a high signal first, the second data D2 is a high signal first, and the third data D3 is a high signal first. Next, the fourth data D4 is sequentially output as a high signal. At this time, data that does not correspond to each of the data D1-D4 becomes a low signal.

In this way, the CPU 20 selectively or sequentially outputs a high signal for the same number of blocks as in the forward rotation. Therefore, the decoder 26 converts the control signal input from the CPU 20 into a voltage of a predetermined magnitude and applies it to the base end of the first through fourth transistors Q1 through Q4 through the corresponding data D1 through D4. do. The first to fourth transistors Q1 to Q4 are turned on by the voltage signal applied to the base end to excite the field coils L1 to L4 connected to the collector end to rotate the stepping motor 28 in the forward rotation direction. Therefore, when the turn indicator switch 14 is located in the left direction, the room mirror, which has been reversed, returns to the same original position as when the turn indicator switch 14 returns to its original position, thereby enabling normal driving.

In addition, when the emergency light switch 12 is turned on, the flashing signal of the turn signal relay 10 is applied to the turn indicators 21-24 through the reverse voltage preventing diodes D1 and D2 to turn the turn indicators 21-24. Flashes. At this time, a flashing signal is also applied to the first and second negative gates 16 and 17 and the first and second logical gates 18 and 19. When the flashing signal is applied to the first and second negative gates 16 and 17 as a high signal, the signal is inverted to a low signal and input to the input terminals of the first and second logical gates 18 and 19. The high signal applied to the other input terminal of the logical gates 18 and 19 and a logical operation are performed to output a low signal to the output terminals of the first and second logical gates 18 and 19. Therefore, the CPU 20 does not output the separate control signal by determining the input signal. Therefore, when the emergency light switch 12 is operated, the room mirror is not turned left or right.

As described above, the present invention can be rotated in a direction in which the rearview mirror is applied when the driver makes a left or right turn or a U-turn of the car, thereby minimizing the risk of a safety accident. .

As described above, the present invention connects the negative gate and the logical multiplication gate to each contact of the emergency light switch and the direction indicator switch, the CPU is connected to the output terminal of the logical multiplication gate to the sequential or selective control signal of the CPU By rotating the stepping motor forward and backward by rotating the stepping motor to the left or right, the driver can secure a more reasonable rear clock, thereby preventing safety accidents and increasing convenience in the operation of the vehicle.

Claims (1)

A turn signal relay that is turned on or off at regular intervals, an emergency light switch connected to the turn indicator relay to flash an emergency light, a turn indicator switch connected to the turn indicator relay and connected in parallel with an emergency light switch, the emergency switch and In the emergency and direction display device of the vehicle which is connected to the turn signal switch, the left or right turn indicators flashing by battery power, A negative gate connected to the emergency light switch 12 through the reverse voltage preventing diodes D5 and D6 and connected to the contacts 14a and 14b of the turn signal switch 14 to invert the input signal. 16, 17), It is connected through the reverse voltage prevention diodes (D5, D6) configured at the contacts of the emergency light switch 12, and connected to the contacts (14a, 14b) of the direction indicator switch 14, respectively, the emergency light switch 12 and the direction indicator switch A plurality of logical product gates (18, 19) for logically calculating the signal applied from (14) and the signal applied from the negative gates (16, 17), A CPU 20 for comparing and determining signals input from the plurality of logical product gates 18 and 19 and outputting a selective control signal; A decoder 26 for converting and outputting a control signal output from the CPU 20 into a voltage signal having a predetermined size; A plurality of transistors Q1 to Q4 to which a voltage signal output from the decoder 26 is applied to the base terminal and switched; An automotive room comprising a stepping motor 28 connected to field collector coils L1 to L4 of the plurality of transistors Q1 to Q4, respectively, excited by a battery power source B +, and forward and reverse rotation. Mirror rotating device.