KR950006995B1 - The auto-converting devices of rear-view angles for auto-car back mirror - Google Patents

Abstract

The device prevents the direct ray of a head light lamp of the rear vehicle from reflectecting in the rear view mirror of driver. The rear view mirror (1) has a hinge shaft (4a) of ball support device (4) engaged with the hinge groove (2a) of the back cover (2); support piece (5) mounted at the end of the device (4) elastically supported by a coil spring (6); a pivot shaft driven by a motor (9) mounted at the bottom of the piece (5); an angle change cam (14) touched with the piece; a switch operating cam (15) for operating the limit switch (16) connected with the circuit (21); photo-sensitive element (18) for applying the current when the direct ray is received, connected with the circuit (21) of the back cover (2).

Description

Rear View Angle Auto Inverter of Automotive Rear View Mirror

1 is an overall perspective view showing the interior of the rearview mirror in which the apparatus of the present invention is implemented.

Figure 2a is an exploded perspective view showing a ball support portion of the rearview mirror implemented of the present invention.

Figure 2b is a partially exploded perspective view showing the main part of the device of the present invention.

3 is a plan view of main parts of the device of the present invention.

Figure 4a, b is a cross-sectional view of the entire one side view of the rearview mirror showing an operating state of the present invention.

5a, b is a schematic diagram showing the main action of the present invention.

6 is a circuit diagram for operating the device of the present invention.

7a, b is a perspective view of the main portion and another plan view showing the action of another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: rearview mirror 2: back cover

3: cover mount 3a: ball

4 ball support 5 support piece

6: coil spring 7: reduction gear box

8,8 ': Worm 8a, 8a': Worm gear

9: motor 9 ': solenoid

9a ': working shaft 10: rotating shaft

10a: plane cutting groove 11: support

12: lock nut 13: accumulator mechanism

14: angle conversion cam 14 ': angle conversion cam protrusion

15: switch operation cam 15b: stepped groove

15c: shaft 15d: concentric circumferential surface

15e: eccentric circumference 16: limit switch

18: light receiving element 20: circuit board

21: circuit 22: link

23: axis R1-R14: resistance

TR1-TR3: Transistor

The present invention relates to a rear view angle automatic conversion device for a rearview mirror for a vehicle designed to prevent the headlight direct sunlight of a rear vehicle from entering a driver's view through a rearview mirror at night.

Specifically, when the rear headlight direct light (light) enters the driver's view through the rearview mirror at night, the rearview mirror is automatically angle-shifted, and the rear headlight direct light directly turns off the rearview mirror. When it is out of the rearview mirror to be automatically converted to the original angle state of the rear view mirror is to provide a rear view angle automatic conversion device for a car.

In general, the rear view mirror of a car is used to adjust the up, down, left, and right angles by manual operation, and once this adjustment is made, the angle mirror is not changed until the angle is adjusted again.

Therefore, at night, when the driver sees the rearview mirror when the headlights of the rear vehicle, especially the direct headlights, are in direct sunlight, the driver is in danger of an accident due to a temporary blindness.

Therefore, in recent years, the rear view mirrors that can weaken the reflected light of the headlights of the rear vehicle to the state that does not dazzle, help the driver at night, but in the case of the downlights, the beam itself is directed toward the ground In the case of the high beam headlight, even though the reflected light itself is weakened through the rearview mirror, the direct ray of light is reflected directly into the driver's vision, causing visual impairment. The problems provided by night traffic accidents remain.

According to the present invention, as described in the introduction, the rearview mirror is automatically converted to an angle when the headlight direct light is reflected directly to the rearview mirror at night, while the rearview mirror is automatically converted to the angle of the automotive rearview mirror which is automatically returned when the headlight is out of the rearview mirror. The purpose is to provide safer night driving and provide the cause of night traffic accidents by providing a device.

In order to achieve the above object, the present invention is installed in a horizontal state with the vehicle body is used a light receiving element for detecting the direct light of the headlights of the rear vehicle while the motor or solenoid is operated in accordance with the detection state of the light receiving element rearview mirror is bound By the angle of the back cover itself to operate the angle of reflection of the direct light of the headlights of the rear vehicle reflected by the rearview mirror is devised so as to deviate from the driver's vision, and will be described in more detail based on the accompanying drawings as follows. .

The rearview mirror is largely divided into a rearview mirror 1 and a back cover 2 to which the rearview mirror 1 is attached and supported, and a cover mount 3 to which the back cover 2 is angle-adjusted.

Both hinge shafts 4a of the ball support 4 are installed in the middle of the back cover 2 so as to be rotatable by being fitted into the hinge grooves 2a, and the upper part of the back cover 2 is provided on the top of the ball support 4. The ball 3a of the cover mount 3, which is assembled through the hole 2b, is inserted so that the ball cover 3a is not detached and the back cover 2 itself is supported and the angle of the back cover 2 can be adjusted. have.

A support piece 5 is attached to the ball support 4 so as to extend outwardly, and a coil spring 6 is installed at the end of the support piece 5 so as to be connected to the back cover 2. It is supposed to pull). Reference numeral 6a denotes a spring set screw.

On the other hand, the reduction gear box (7) installed on one side of the support piece (5) is provided with worms (8), (8 ') and worm gears (8a), (8a') to receive power from the motor (9). The rotation shaft 10 is connected to the worm gear 8a ', which is finally powered, and the rotation shaft 10 is connected to the support 11 attached to the back cover 2 by the lock nut 12. It is built up and supported by the axial support 13 which is stuck.

The rotating shaft 10 penetrating the shaft support 13 has a planar cutting groove portion 10a, which is partially cut, and has a half-round angle conversion cam 14 which is in surface contact with the support piece 5 in the middle portion. ) Is fixedly installed by the binding pin 14a, and the switch operation cam 15 is fixedly installed at the end by the binding screw 15a.

The switch actuating cam 15 is partially formed so that the stepped groove 15b is formed, and about half of the main surface of the stepped groove 15b forms an axial hole 15c and a concentric circumferential surface 15d, and the other main surface Is an eccentric circumferential surface 15e.

On one side of the switch operation cam 15, a limit switch 16 connected to a circuit 21 formed on a circuit board 20 is provided by a support 17, and the circuit 21 is external to the back cover 2. The light receiving element 18 installed in the is connected to form a circuit configuration.

The light receiving element 18 is installed in the cover mounting stand 3 by the fastener 18a as shown in the drawing, but is not necessarily installed in this way, and the position where the headlight of the rear vehicle can receive direct sunlight, that is, the interior of the vehicle. It may be installed on the rear seat shelf or ceiling, but it is important to install it so that the headlight of the rear vehicle can be directly received by installing it so that it is level with the vehicle body.

In the present invention, the power supply of the circuit 21 and the motor 9 is supplied by the power line 19, and by installing a power switch (not shown) in the vicinity of the driver's seat to supply and operate only at night operation. desirable.

The circuit 21 is configured such that the voltage across the resistor R1 is applied to 1c when the headlight direct ray of the rear vehicle is applied to the light receiving element 18 from the outside in the connection circuit constituted by the resistors R1-R4. The amplified voltage is to be amplified again by transistor 1 (TR1).

The output amplified by the transistor 1 (TR1) is the power is amplified again by the transistor 3 (TR3) to drive the motor 9 and the device of the present invention is operated according to the drive of the motor 9, the angle of the rearview mirror When the state is converted, the limit switch 16 is operated so that the motor 9 is stopped, and the circuit is configured to stop. When the headlight direct sunlight of the rear vehicle leaves the light receiving element 18, the output is reversed by the transistor 2 (TR2). The circuit is configured so that the angle-converted rearview mirror is returned to its original angle state as the motor 9 is driven again.

In FIG. 6, the circuit diagram, reference numeral R5-R14 denotes a resistor, D1 and D2 denote a diode, and ZD denotes a zener diode.

Therefore, in the present invention, the normal rearview mirror is in a state in which the half-round angle shift cam 14 and the support piece 5 are in contact with each other, as shown in FIG. At this time, the switch operation cam 15 and the limit switch 16 are in a state in which the switch output terminal 16a enters the stepped groove 15b, as shown in FIG. 5A, and the supply power of the motor 9 is cut off. to be.

In this state, when the direct headlight of the rear vehicle is directly reflected by the light receiving element 18, the power is supplied by the circuit 21 to drive the motor 9, and the rotation shaft 10 rotates. As shown, the angle conversion cam 14 and the support piece 5 are not in contact, that is, the plane cutting groove 10a of the rotational shaft 10 is in contact with the support piece 5 The rotating shaft 10 itself is moved by the distance that the radius of the coaxial 10 and the height of the angle conversion cam 14 are combined, so that the coil spring 6 supports the lower portion of the back cover 2 itself. At the end, the rear cover 2 is slightly rotated upwardly about the hinge axis 4a so that the angle of the rearview mirror 1 is changed.

The switch actuating cam 15 is rotated as shown by the arrow shown in FIG. 5B while the lower portion of the back cover 2 is rotated and the rear view angle of the rear view mirror 1 is changed as described above. Since the switch exit terminal 16a of the < RTI ID = 0.0 > 1) < / RTI > As the rotation shaft 10 stops rotating, the rearview mirror maintains the angle converted state.

As such, when the angle of the rearview mirror 11 of the rearview mirror is changed, the reflection angle of the headlight direct light of the rear vehicle is changed, so that the driver does not receive the visual impairment because the driver does not see the direct light through the rearview mirror.

This does not mean that the driver cannot see the rear view field through the rearview mirror at all. Since the entire back cover 2 including the rearview mirror 1 is not largely angularly converted, only the lower portion of the back cover 2 is rotated slightly so that the rear view is not hindered.

On the other hand, if the headlight direct sunlight of the rear vehicle is out of the light receiving element 18 in the state that the rearview mirror is converted as described above, the power is supplied to the motor 9 by the transistor 2 (TR2) of the output reflection of the circuit 21. The hinge shaft with respect to the support piece 5 which does not move because the rotation shaft 10 is rotated so that the angle conversion cam 14 contacts the support piece 5 as shown in FIGS. 4 and 5a. Since the lower part of the back cover 2 is rotated about 4a, it returns to its original state.

At this time, the switch actuating cam 15 is the limit switch 16, the switch actuating cam 15 is rotated while the switch exit terminal 16a is in contact with the eccentric circumferential surface 15e. When the state is completely returned to the state, the protrusion of the switch exit terminal 16a is inserted into the stepped groove 15b, and thus the power supply to the motor 9 is cut off and the rotation of the rotation shaft 10 is stopped. Therefore, the original state is maintained as it is until the headlight direct sunlight is reflected on the light receiving element 18 again.

On the other hand, Figure 7 is another embodiment of the present invention is to be operated by using an electrically operated solenoid (9 ') instead of the motor (9).

That is, normally, as shown in FIG. 5B, the operating shaft 9'a of the solenoid 9 'is advanced, as shown in the solid line, and the angle conversion cam protrusion 14' at the end of the link 22 is supported by the support piece 5. When the headlight direct sunlight of the rear vehicle enters the light receiving element 18 while being in the original state that is in the bottom state, power is applied to the operating shaft 9'a to be operated backward.

Therefore, when the operating shaft (9'a) is reversed operation, as the link 22 is rotated about the support shaft (23), the angle conversion cam projection 14 'is released from the support piece (5) to the outside and then Since the coil spring 6 pulls the lower part of the back cover 2, the angle is converted. In addition, when the direct light of the headlamp is deviated from the light receiving element 18, the operating shaft 9'a is moved forward again to support the support piece 5. Since the angle conversion cam protrusion 14 'enters the bottom surface and pushes the lower part of the back cover 2 to the support piece 5, it returns to the original state before the angle conversion.

According to the above description, since the present invention does not receive direct light through the rearview mirror of direct headlights during night driving, it provides an effect of avoiding visual impairment, thereby enabling safe driving and preventing accidents. In the drawings, the present invention is illustrated by applying the device of the present invention to an interior rearview mirror, but the device of the present invention is not necessarily applied only to an indoor rearview mirror, but also to an outdoor rearview mirror (outside rearview mirror) attached to both sides of the outside of the vehicle. And can be effective.

Claims (6)

In the rear view mirror into which the hinge shaft 4a of the ball support 4, in which the ball 3a of the cover mounting stand 3 is assembled, is installed in the inner hinge groove 2a of the back cover 2 having the rearview mirror 1. In this case, the coil spring 6 pulling the lower back cover 2 to the support piece 5 installed at the end of the ball support 4 is installed therein and the bottom of the support piece 5 is rotated by the power of the motor 9. The limit switch connected to the circuit 21 on the circuit board 20 and the angle conversion cam 14 is pushed in contact with the support piece 5 to the rotating shaft 10 is laid out ( The switch operation cam 15 for activating 16 is fixed and connected to the circuit 21 to the outer cover of the back cover 2 so that the light receiving element 18 applied to the headlight in direct sunlight is installed horizontally with the vehicle body. Automatic angle conversion device for a rearview mirror for cars, characterized in that the configuration. 2. The rotating shaft (10) according to claim 1, wherein the rotating shaft (10) is powered from the motor (9) via worms (8), (8 ') and worm gears (8a), (8'a) mounted in the reduction gearbox (7). Automatically converting the angle of the rearview mirror configured to be reduced and rotated and installed on the shaft support (13) mounted to the support (11) by the lock nut (12). The rearview mirror automatic conversion device according to claim 1, wherein the planar cutting groove (10a) is formed at the distal end of the rotating shaft (10) so that the semi-round angle conversion cam (14) is installed. The method of claim 1, wherein the stepped groove (15b) is formed on the main surface of the switch operation cam 15 and divided into two equal parts to form a concentric circumferential surface (15d) and an eccentric circumferential surface (15e) for the shaft hole (15c) Angle shifting device of the rearview mirror. 2. The circuit of claim 1, wherein the circuit 21 constitutes a connection circuit between the light receiving element 18 and the resistors R1-R4 so that when the light receiving element 18 is applied, a voltage across the resistor R1 is applied to the IC. The voltage amplified by the IC is amplified again in transistors 1 (TR1) and 3 (TR3) to drive the motor (9), and output by transistor (TR2) when the light-receiving element (18) is cut off. A rearview mirror angle automatic conversion device configured to be inverted so that the motor (9) is driven and the limit switch (16) is connected in parallel with the transistors 1, 2 (TR1), (TR2) and the IC. The angle change of the end of the link 22 according to claim 1, wherein the solenoid 9 'is installed instead of the motor 9, and the link 22 is operated at the link 22 around the support shaft 23 according to the forward and backward operation of the operating shaft 9'a. Automatically converting the rearview mirror angle of the rearview mirror is configured so that the cam projection (14 ') is inserted into and removed from the bottom of the support piece (5) so that the back cover (2) is converted and returned.