JPS592951A - Tilting device of mirror in motor car - Google Patents

Abstract

PURPOSE:To make a mirror point reliably and to improve safety at the time of backing of a motor car, by a method wherein a mirror designated by a turn signal switch is tilted appropriately for confirmation of a rear wheel by interlocking the mirror with shifting to a reversing position of a transmission. CONSTITUTION:When a trasmission is shifted to a reverse position after a turn signal switch S2 has been closed, a switch S1 is closed and a relay RL1 becomes a contact point (c) side. A transistor T1 is energized, a motor 10 is turned in a positive direction and a mirror is inclined. When the mirror arrives at a pointing position, a lower limit switch 12 becomes open and the rotation of the motor 10 is stopped. When the reversing position is released, the switch S1 is opened, the relay RL1 becomes a contact point (b) side and the transistor T1 becomes nonconducting. A transistor T2 is energized, a relay RL2 is operated, a transistor T3 is energized and the motor 10 is turned reversely owing to electric discharge of a condencer C1. When the mirror is returned to an original position, the rotation of the motor 10 is suspended by a limiter.

Description

[Detailed Description of the Invention] This invention relates to a device for automatically controlling the tilt angle of a mirror in an automobile, and its purpose is to automatically control the angle of inclination of a mirror in an automobile, and its purpose is to control the angle of inclination of a mirror specified by a reverse switch according to the driver's wishes when the automobile is reversing. The side mirrors are automatically tilted to a limited position that allows confirmation of the vicinity of the rear wheels, and when either the reverse designation or the reverse switch is released, the tilted mirrors automatically return to the normal position. The objective is to provide a device that

When backing up a car, drivers traditionally tilted their mirrors to ensure visibility around the rear axle for safety purposes, but now the mirrors must be returned to their original position after reversing. It was difficult to operate. In addition, with conventional models that automatically tilt the mirror in conjunction with the reverse position operation of the transmission to ensure visibility around the rear wheels, even if you want to back up with the mirror in its normal use state, the mirror This was not desirable because it tilted in conjunction with the reverse position operation.

This invention provides for the mirror specified by the turn signal switch to automatically adjust the directional inclination of the mirror specified by the driver to the inclination position for checking the vicinity of the rear wheels when the vehicle is backing up. In conjunction with the reverse position operation of the transmission, the mirror tilting motor is rotated in one direction, tilting the mirror downward, and when the mirror is tilted properly for checking the rear wheels, the lower limit switch is activated to the motor. The power is cut off, and when the reverse designation operation is canceled or the designation of the mirror by the turn signal switch is canceled, the motor is rotated in the other direction to return the mirror to its normal original tilted position. This is what I did.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, left and right mirrors 2 (
(only one of which is shown) is oriented to correspond to a field of view in the direction of the arrow 4, which is substantially horizontal to the eye point 3 indicated by the X in normal use.

When the 1 Herans transmission (not shown) is operated to the reverse position, when the mirror 2 is pointed at the set tilted position as shown by the arrow 6, it will automatically stop and check the vicinity of the rear wheel 5. I'm starting to get it. As shown in FIG. 2, the mirror 2 has a mirror main body 7 that is rotatable around a support shaft 8, and each end of a drive bell 1-9 is fixed to both ends of the mirror main body 7. Reference numeral 9 denotes a mirror tilting motor 1o, which is mounted on a rack 1 and is adapted to control the mirror tilting angle by reversibly rotating the motor 10.

The normally closed lower limit switch 12 has a mirror 2 shown by the arrow 6.
When it is tilted to the pointing position, its lower end 13 comes into contact with it and operates. These mirror-related members are each mounted inside the mirror case 14. FIG. 3 is a control circuit diagram for mirror tilting, and the control circuit is prepared for each mirror. Each terminal Ml, M2 of the motor 10 and the terminal S of the motor field coil CL are connected to a manual switch operation panel G. In operation panel G, terminals B and E receive a positive potential of battery B (hereinafter referred to as potential B) and a ground potential, respectively.

The characters "left", "right", "bottom", and "top" are indicators of the manual operation conditions of the mirror 2, respectively, and the connection state under each condition is an indication.

The forward/reverse switching relay RL1 is located on the side where its contact piece a is always in contact, and at this time, it specifies the stopped state of the motor IO or specifies the rotation of the mirror 2 to return it from the orientation state of arrow 6 to the orientation state of arrow 4. do. When the contact point C side is reached, a transition from the state shown by arrow 4 to the state shown by arrow 6 is specified. The normally open reverse switch S1 is closed by operating the transmission in the reverse position. A normally open turn signal switch S- and a normally open manual switch Si connected in parallel are connected in series with the switch s1, enabling the switch S1 when either of them is closed. The contact a of relay RL1 is switch Sx, Sz
, syo, and when on the contact C side, the potential B is applied to the motor terminal M1 via the diode D1 and to the field coil CL via the diodes 1-2, respectively.

At this time, the transistor board 1 for forward direction drive is operated. When the L transistor '1'1 is in operation, the motor terminal M2 is brought to the ground potential of the battery B via the lower limit switch 12. , 1 range resistor] 2 + 'rv + relay R1,,
2 is for driving the motor 10 in the reverse direction;
1~Resistor R1, R2, capacitor C
Immediately after the contact a of relay RI and 1 shifts from contact C to h, it becomes conductive for a predetermined period of time, during which time the contact of relay RL 2 closes, and at this time, The transistor T-3 becomes conductive to set the motor terminal M1 to the ground potential, and the potential B is applied to the motor terminal M2 via the diode D3 and to the field coil C[, via the diode D4. It has become. The NAND gate NAND receives the potentials of the motor terminal M2 and the contacts C of the relays R and L1, and its output serves as one input of the AND gate AND. The AND gate AND receives as the other input the potential of the contact C of the relay RL 1 and the potential B via the switches St, S2, and S3, and its output is the diode Ds and the resistor R.
3 serves as an input to the capacitor C1. Therefore, contact piece a of relay RL1 is at contact point C, and switches S1 and 52. Alternatively, the capacitor C1 is charged when the set of switches S1 and 83 is closed, and discharged for a predetermined period of time when any switch in the set of switches is opened. The reverse lamp L1 flashes when the reverse switch S1 is operated, and lights up when the transmission is in the reverse position. The control indicator lamp L2 indicates that the mirror 2 is under control or in the position indicated by the arrow 6.

Relays RL, , are for opening and closing reception of potential B and ground potential to manual switch operation panel G in conjunction with the operation of relay RLx.

The operation of the above configuration will be explained below.

When the mirror 2 is oriented in the direction of the arrow 4 and is in normal use, when the turn signal switch S2 is closed,
The mirror is linked to the operation of the 1-lance mill.

When the 1-lance milsion is operated to the reverse position in order to move the car backwards, the reverse switch S1 is closed, the reverse lamps L and 1 light up, and the relays R1 and 1 are operated and their contact a is turned on. This will be the contact C side.

Therefore, transistors 1 to T1 are conductive. The motor lO is
The terminal M1 receives the potential B, the terminal M2 becomes the ground potential, rotates in the forward direction, and when the mirror 2 reaches the pointing position indicated by the arrow 6, the lower limit switch 12 opens and the motor lO
The rotation 4 and 1 are stopped and the mirror 2 is directed to check the rear wheel 5. Capacitor C1 is charged in a short time during this period. Next, when the reverse position release operation of the transmission opens the reverse switch S1, the reverse lamp L1 goes out, the contact piece a of the relay RL1 becomes the contact side, the control display lamp L2 goes out, and the 1~ Transistor T1 becomes non-conductive. When the capacitor C1 starts discharging, the transistor T2 becomes conductive, and the relay RL2 operates to close its contact, and the transistor T:I
conducts. The motor 10 receives a potential B at its terminal M2 as the capacitor c1 discharges, and the terminal M1 becomes ground potential and rotates in the opposite direction. When the mirror 2 reaches the pointing position indicated by the arrow 4, a limiter, which is a separate film, is applied. Stopped by
Cru.

When the manual switch S3 is closed to designate the mirror tilting control described above, the mirror 2 operates in the same manner as the reverse switch S1 opens and closes, regardless of the turn signal switch S2.

As described in 2 above, according to the present invention, when the driver specifies a turn signal switch or a manual switch, the mirror corresponding to the specification is linked with the reverse position operation of the transmission. Since the rear wheel is tilted to the rear wheel pointing position, the mirrors, which require appropriate interlocking, are reliably pointed, improving safety when the vehicle is reversing. When the car is returned to normal operation, the mirrors also automatically return to their normal positions, making these operations easy.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an automobile according to the invention, FIG. 2 is a schematic diagram of a mirror structure showing an embodiment of the invention, and FIG. 3 is a control circuit diagram for tilting the mirror. 2...Mirror, 10-motor for mey-ffilJ+, 12-lower limit switch, sl...reverse switch, S2...turn signal switch, goto...1-transistor (forward drive means), T7. ,
T'-1-1-ra> register (reverse direction driving means).

Claims (1)

[Claims] A mirror tilting motor serving as a drive unit for changing the directional tilt angle of each mirror; A lower limit switch that cuts off power to the mirror tilting motor when the mirror is tilted to the lower limit tilt position of the mirror, and a mirror that is to be tilted controlled among the plurality of mirrors installed on the automobile. a turn signal switch; a reverse switch that operates in conjunction with the reverse position operation of the transmission and specifies energization of the mirror tilting motor to tilt the mirror orientation toward the lower limit tilt position; forward-direction driving means for causing the tilting motor to move in the direction of the lower limit tilt position by rotating in one direction and then stopped by the shutoff by turning the tilting motor in response to the energization designation by the reverse switch for the mirror; Reverse direction driving means for causing the tilting motor to rotate in a limited direction in the other direction on the condition that either the turn signal switch or the reverse switch is released from the designation when the tilting motor is closer to the lower limit tilting position than the normal position; A mirror tilting device for an automobile, which is provided with a mirror tilting device.