JPH1111263A - Switch circuit in automotive rearview mirror - Google Patents

Abstract

(57) [Summary] [Problem] To reduce the number of parts. SOLUTION: Heaters H. on both left and right sides are provided. L, H. R and the first motor M.R. L1, M.P. R1 and the second motor M. L2, M.P. One wiring of R2 is shared by the common wiring 63. As a result, as compared with the conventional switch circuit, the left and right side door mirrors A. L, A. R side terminals L1 to L4 and R1 to R4 to four, switch device SW side terminals S1 to S8 to eight, and left and right side door mirrors A. L, A. R side terminals L1 to L4, R1 to R4
6 between the switch and the terminals S1 to S6 on the switch device SW side
1 to 66 can be reduced to six, respectively, and the number of parts can be reduced accordingly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch circuit for a rearview mirror for an automobile, and more particularly to a switch circuit for tilting mirror bodies on both left and right sides in the vertical and horizontal directions and turning on and off heaters on both right and left sides. In particular, the present invention relates to a switch circuit in an automobile rearview mirror in which the number of parts is reduced by reducing the number of terminals between the motor and heater side terminals, the switch side terminals, and both ends thereof.

[0002]

2. Description of the Related Art A switch circuit in a conventional automotive rearview mirror will be described with reference to FIGS. This example shows an example used for a door mirror attached to the outside of doors on both left and right sides of an automobile. In FIG.
L is the left side mirror, A.L. R indicates a right side door mirror. This door mirror A. L, A. In R, a mirror body (having a mirror surface (mirror surface)) 10 is attached to the mirror housing 1 such that the mirror body 10 can be tilted up, down, left and right. The mirror assembly 11 including the mirror housing 1 and the mirror body 10 is mounted outside the left and right doors (not shown) of the automobile via the mirror base 12.

In such a rearview mirror for an automobile, the mirror bodies 10 on the left and right sides are separately tilted in the vertical and horizontal directions by remote control, or a heater H. L, H. R is turned on and off. The operation of tilting the mirror body 10 in the vertical and horizontal directions and the heater H. L, H. The on / off operation of R is performed via a switch circuit.

As shown in FIGS. 15 and 16, this switch circuit rotates the right mirror body 10 upward or downward by rotating forward or backward to rotate the right first motor M.M. By rotating forward or reverse with R1,
The right second motor M.1 tilts the right mirror body 10 rightward or leftward. R2 to rotate the mirror body 10 left or right in the forward or reverse direction to tilt the left mirror body 10 upward or downward. L1 and the left second motor M.T1 that tilts the left mirror body 10 rightward or leftward by rotating forward or backward. L2
And heaters on the left and right sides for removing water droplets and the like adhering to the mirror bodies 10 on the left and right sides, respectively (for example, a heater having a relatively small power consumption as a PTC planar heating element. A timer controller is connected to this heater. H.) L, H. R and the right first motor M.R. R
1 and the second motor M.1. Forward and reverse rotation of R2,
Or, the first motor M. on the left side. L1 forward rotation, reverse rotation and the second motor M.L1. Four-way remote control switches 21, 22, 23, 24, 25, 26, 27 for switching between L2 normal rotation and reverse rotation
28 and the first motor M.R. R1 and the second motor M.
R2 and the first motor M.R. L1 and the second motor M. L2, and right and left changeover switches 31, 32 for switching between energization of the heaters L2 and H. L2. L, H. R and the first motor M.M on both the left and right sides. L1, M.P. R1 and the second motors M.R. L
2, M. R2 and heaters H.R. L, H. R and
Wirings 51 to 28 electrically connecting the four-way remote control switches 21 to 28, the right and left changeover switches 31, 32, the heater switch 4, the power supply +, and the ground (earth)-.
59.

[0005] The first motor M. L1,
M. R1 and the second motor M. L2, M.P. R2 and heater H. L, H. R are door mirrors A.R.
L, A. R, respectively, and the above-described four-way remote control switches 21 to 28 and the left / right switch 31,
32 and the heater switch 4 are respectively provided in the switch device SW in the vehicle, and the above-mentioned wirings 51 to 59 are provided with the above-mentioned left and right door mirrors A. L, A. R side terminal L1
To L5 and R1 to R5, the terminals S1 to S7 on the switch device SW side, and the terminal S8 on the switch device SW side,
S9 is electrically connected between the power supply + and ground (earth)-. The above-described four-way remote control switches 21 to 28 are composed of eight normally open movable contacts, and are linked in an upper position “up”, a lower position “down”, a left position “left”, and a right position. Connected to one of "right". In addition, the above-mentioned left and right changeover switches 31 and 32
Is composed of two movable contacts, which are interlocked with each other in a neutral position "N", a left switching position "L", and a right switching position "R".
Connected to either Further, the above-described heater switch 4 is configured by one movable contact, and is turned on “O”
N "or OFF. Further, the above-described switch device SW is electrically connected to a power source and a ground (earth) via terminals S8 and S9, respectively.

Next, the operation of the switch circuit in the above-described rearview mirror for a vehicle will be described. First, the left and right changeover switches 31 and 32 are switched from the neutral position “N” to, for example, the right changeover position “R”. In this state, when the four-way remote control switches 21 and 25 are operated to the upper position “up”, the first motor M. R1 rotates forward and the right side mirror A. R tilts the mirror body upward and operates the four-way remote control switches 22 and 26 to the lower position “down”, so that the right first motor M.R. R1 is reversed and the right side mirror A. R mirror body 10 tilts down,
When the four-way remote control switches 23 and 27 are operated to the right position “right”, the right second motor M. R2 rotates forward and the right side door mirror A. R is tilted rightward and the four-way remote control switches 24 and 28 are operated to the left position “left”, the right second motor M.R. R2 is reversed and the right side door mirror A. R mirror body is 10
Tilt to the left.

Next, the left and right changeover switches 31, 32 are switched from the neutral position "N" to, for example, the left changeover position "L". In this state, the four-way remote control switches 21 and 25
Is operated to the upper position “up”, the left first motor M. L
1 rotates forward and the left side door mirror A. The L mirror body tilts upward and the four-way remote control switch
6 is moved to the lower position “down”, the left first motor M.
L1 is reversed and the left side door mirror A. L mirror body 10 tilts downward, and the four-way remote control switch 2
When the third motor 27 is operated to the right position “right”, the left second motor M. L2 rotates forward and the left side door mirror A. L is tilted rightward and the four-way remote control switches 24 and 28 are operated to the left position “left”, and the left second motor M.L. L2 is reversed and the left side door mirror A. L
Is tilted 10 left.

Further, the heater switch 4 is turned on "ON".
, The heaters H.H. on both the left and right sides as shown by the thick solid line in FIG. L, H. R is energized, and heaters H.H. L, H. R generates heat and mirror body 10
To remove water droplets and the like adhering to the surface. Heater switch 4
Is switched to "OFF", as shown in FIG.
Heaters H. on both left and right sides L, H. Power supply to R is cut off.

[0009]

However, the switch circuit in the above-mentioned conventional rearview mirror for automobiles includes door mirrors A.A. L, A. Five terminals L1 to L on the R side
5 and R1 to R5, nine terminals S1 to S9 on the switch device SW side, and door mirrors A. L,
A. Seven wirings 51 to 5 between the terminals L1 to L5 and R1 to R5 on the R side and the terminals S1 to S7 on the switch device SW side.
7 and the number of parts is large.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a switch circuit in a rearview mirror for an automobile, in which the number of terminals and wirings is reduced to reduce the number of parts.

[0011]

According to the present invention, in order to achieve the above object, one wiring of heaters on both left and right sides and one wiring of first and second motors on both right and left sides are shared. It is characterized by having done.

According to the present invention, as compared with the above-described conventional switch circuit, the present invention has four terminals on the left and right door mirrors, eight terminals on the switch device, and eight terminals on the left and right sides. The number of wires between the terminal on the door mirror side and the terminal on the switch device side can be reduced to six.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Two embodiments of a switch circuit in a vehicle rearview mirror according to the present invention will be described below with reference to FIGS. 1 to 12 show a first embodiment of a switch circuit in a vehicle rearview mirror according to the present invention. This example shows an example used for a door mirror attached to the outside of doors on both left and right sides of an automobile. In the drawing, the same reference numerals as those in FIGS. 14 to 16 denote the same components.

The switch circuit according to the present invention comprises heaters H.R. L, H. R and the first motor M.R. L1, M.P. R1 and the second motor M. L2, M.P. R2
Is shared as the common wiring 63. The left and right shared wires 63 are connected to the ground (earth) via a normally closed first movable contact 71 and a second movable contact 72 of a four-way remote control switch to be described later. L, H. One other wiring 62 of R
Is connected to a power supply via a neutral position "N" of a first movable contact 81 of a left / right switch described later.

The four-way remote control switch includes a normally closed first movable contact 71 and a second movable contact 72, and a normally open third movable contact 73 and a fourth movable contact 74.
, And are connected to any one of the neutral position “middle”, the upper position “up”, the lower position “down”, the left position “left”, and the right position “right”.

The left / right changeover switch has three positions: a neutral position "N", a left position "L", and a right position "R".
The first movable contact 81 and the second movable contact 81
The movable contact 82 is connected to one of the neutral position “N”, the left switching position “L”, and the right switching position “R” in conjunction therewith.

Further, the left and right door mirrors A. L,
A. Wirings 61 to 66 are electrically connected between the terminals L1 to L4 and R1 to R4 on the R side and the terminals S1 to S6 on the switch device SW side. The switch device SW is electrically connected to a power source and a ground (earth) via terminals S7 and S8, respectively.

The switch circuit of the present invention in this embodiment has the above-described configuration, and its operation will be described below with reference to FIGS. First, when the left and right changeover switches 81 and 82 are switched to the neutral position “N”, as shown by the thick solid line in FIG. 2, the current is supplied from the power supply + → the neutral position “N” → terminal S3, L
1, R1 → left and right heaters H. L, H. R → Terminal L
2, R2, S4 → 4-way remote control switch 71, 72 →
Ground (earth)-flows, heater H.H.
L, H. R is energized, and heaters H.H. L,
H. R generates heat and removes water droplets and the like adhering to the surface of the mirror body 10.

Next, when the right and left changeover switches 81 and 82 are switched to the right changeover position "R" or the left changeover position "L",
As shown in FIG. 3 or FIG. L,
H. Power supply to R is cut off.

When the four-way remote control switches 71, 72, 73, 74 are operated to the upper position "up" in a state where the left and right selector switches 81, 82 are switched to the right switching position "R", a thick line in FIG. As shown by the solid line, the current is
→ terminal S7 → four-way remote control switch 72, 71 → terminal S4 → wiring 64 → terminal R2 → right first motor M. R1
→ Terminal R3 → Wiring 65 → Terminal S5 → Left / Right switch 8
1 → 4-way remote control switch 73 → terminal S8 → ground (earth) −, and the right first motor M. R1 rotates forward in the direction of arrow U, and the right mirror body 10 tilts upward.

Next, the four-way remote control switches 71, 7
When 2, 73 and 74 are operated to the lower position “down”, as shown by the thick solid line in FIG.
Direction remote control switch 73 → left / right switch 81 → terminal S5 → wiring 65 → terminal R3 → right first motor M. R
1 → terminal R2 → wiring 64 → terminal S4 → four-way remote control switch 71, 72 → terminal S8 → ground (earth)
-, The right first motor M. R1 is reversed in the direction of arrow D, and the right mirror body 10 tilts downward.

Further, four-way remote control switches 71 and 7
When the members 2, 73 and 74 are operated to the right position “right”, as shown by the thick solid line in FIG.
Direction remote control switch 73 → left / right switch 81 → terminal S5 → wiring 65 → terminal R3 → right second motor M. R
2 → terminal R4 → wiring 66 → terminal S6 → left / right switch 82 → four-way remote control switch 74, 72 → terminal S8 →
Ground (earth)-, and the second motor M. on the right. R2 rotates forward in the direction of arrow R, and the right mirror body 10 tilts rightward.

Further, a four-way remote control switch 7
When 1, 72, 73 and 74 are operated to the left position “left”, as shown by the thick solid line in FIG.
7 → 4-way remote control switch 74 → left / right switch 8
2 → terminal S6 → wiring 66 → terminal R4 → second motor M. R2 → terminal R3 → wiring 65 → terminal S5 → left / right switch 81 → 4-way remote control switch 73 → terminal S8 →
Ground (earth)-, and the second motor M. on the right. R2 is reversed in the direction of arrow L, and the right mirror body 10 tilts leftward.

When the four-way remote control switches 71, 72, 73, 74 are operated to the upper position "up" with the left and right selector switches 81, 82 switched to the left switching position "L", the thick line in FIG. As shown by the solid line, the current is: power supply + → terminal S7 → four-way remote control switch 72, 71 → terminal S4 → wiring 64 → terminal L2 → left first motor M. L
1 → terminal L3 → wiring 61 → terminal S1 → left / right switch 81 → four-way remote control switch 73 → terminal S8 → ground (earth) −. L1
Rotates forward in the direction of arrow U, and the left mirror body 10 tilts upward.

Next, the four-way remote control switches 71, 7
When 2, 73 and 74 are moved to the lower position “down”, as shown by the thick solid line in FIG.
4-way remote control switch 73 → left / right switch 81 →
Terminal S1 → wiring 61 → terminal L3 → left first motor M.
L1 → terminal L2 → wiring 64 → terminal S4 → 4-way remote control switch 71, 72 → terminal S8 → ground (earth).
-, The first motor M. on the left side. L1 is reversed in the direction of arrow D, and the left mirror body 10 tilts downward.

Further, four-way remote control switches 71 and 7
When 2, 73 and 74 are operated to the right position "right", as shown by the thick solid line in FIG.
4-way remote control switch 73 → left / right switch 81 →
Terminal S1 → wiring 61 → terminal L3 → left second motor M.
L2 → terminal L4 → wiring 62 → terminal S2 → left / right switch 82 → four-way remote control switch 74, 72 → terminal S8
→ Ground (earth)-flows and the second motor M. on the left. L2 rotates forward in the direction of arrow R, and the left mirror body 10 tilts rightward.

Further, a four-way remote control switch 7
When 1, 72, 73 and 74 are operated to the left position "left", as shown by the thick solid line in FIG. 12, the current is changed from power supply + → terminal S7 → four-way remote control switch 74 → left / right switch 82 → terminal S2 → Wiring 62 → Terminal L4 → Second motor M. L2 → terminal L3 → wiring 61 → terminal S1 → left / right switch 81 → four-way remote control switch 73 → terminal S8
→ Ground (earth)-flows and the second motor M. on the left. L2 is reversed in the direction of arrow L, and the left mirror body 10 tilts leftward.

As described above, the switch circuit in the rearview mirror for a vehicle according to the present invention according to this embodiment includes heaters H.R. L, H. One wiring of R and the first on both sides
Motor M. L1, M.P. R1 and the second motor M. L2,
M. One wiring of R2 is shared as the common wiring 63. As a result, as compared with the conventional switch circuit, the left and right side door mirrors A. L, A. R side terminals L1 to L
4, R1 to R4 into four terminals S on the switch device SW side
1 to S8, and left and right door mirrors A. L,
A. The number of wirings 61 to 66 between the terminals L1 to L4 and R1 to R4 on the R side and the terminals S1 to S6 on the switch device SW side can be reduced to six, respectively, and the number of components can be reduced.

In particular, in this embodiment, the left and right changeover switches 81 and 82 comprise three position changeover switches of a right side change position, a neutral position and a left side change position. L, H. R is connected to the ground and the power supply via the shared wiring 63 and other wiring 62, and the neutral position “N” of the four-way remote control switches 71 and 72 and the left / right switch 81. As a result, when the left and right changeover switches 81 and 82 are switched to the neutral position “N”, the heaters H.H. L, H. R can be energized, and when the left and right changeover switches 81 and 82 are switched to the right side change position “R” or the left side change position “L”, the heaters H.R. L,
H. Power supply to R is cut off. Therefore, a switch dedicated to heater ON / OFF is not required, and the number of parts can be further reduced.

In this embodiment, the four-way remote control switch is connected to the heaters H.sub. L, H. R
Normally closed first movable contact 71 and second movable contact 72 whose common wiring 63 is connected to the ground, and normally open third movable contact 73 and fourth movable contact 74
And a conventional switch circuit (FIG. 1).
4 to 16), the number of movable contacts of the four-way remote control switch can be reduced to four, and the number of parts can be reduced accordingly, and the reliability and durability of the switch operation can be improved. Can be.

FIG. 13 shows a second embodiment of the switch circuit in the rearview mirror for a vehicle according to the present invention. In the drawings, the same reference numerals as those in FIGS. 1 to 12 and 14 to 16 denote the same components.

The switch circuit according to the present invention in this embodiment includes the left and right shared wires 63 and the left and right heaters H.H. L, H. R and another one of the wirings 62 side, the heater H. L, H. An indicator lamp (light emitting diode) 9 is provided for lighting and displaying when R is in a heat generating state. This indicator light 9
Is disposed, for example, in the switch device SW.

The switch circuit of the present invention in the above-described embodiment is an example in which the switch circuit of the present invention is used for a door mirror attached to the outside of doors on both the left and right sides of an automobile. Rearview mirror,
For example, it can be used for a fender mirror.

In the above embodiment, the heaters H.H. L, H. R shared wiring 63 is connected to ground (earth) via normally closed first movable contact 71 and second movable contact 72 of the four-way remote control switch, and heaters H.R. L, H. Another one of R
The wiring 62 is connected to the power supply through the neutral position "N" of the first movable contact 81 of the left / right changeover switch. In the switch circuit of the present invention, conversely, the heaters on both the left and right sides are connected. H. L, H. R common wiring 63 is connected to the power supply via a neutral position “N” of the first movable contact 81 of the left / right switch, and the heaters H.R. L, H.
The other wiring 62 of R is a normally closed first movable contact 71 and a second movable contact 7 of a four-way remote control switch.
2 may be connected to the ground (earth) via 2.

The switch circuit according to the present invention is similar to the switch circuit shown in FIGS. L, H. R and the first motor M.R. L1, M.P. R1 and the second motor M. L2, M.P.
R2 and one wiring, the door mirrors A.R. L, A. The terminals L1 and R1 on the R side, the terminal S3 on the switch device SW side, and the wiring 53 therebetween are omitted, and a conventional switch circuit (see FIGS. 14 to 16).
And four terminals on the left and right door mirrors, eight terminals on the switch device side, and six wires between the left and right door mirror terminals and the switch device side. Each book can be reduced, and the number of parts can be reduced.

[0036]

As described above, the switch circuit in the rearview mirror for an automobile according to the present invention comprises one of the heaters on both the left and right sides.
Since the wiring is shared with one wiring of the first motor and the second motor on both the left and right sides, each terminal on the door mirror side on the left and right sides is four terminals in comparison with the conventional switch circuit.
The number of terminals on the switch device side can be reduced to eight, and the wiring between the left and right door mirror side terminals and the terminal on the switch device side can be reduced to six, thereby reducing the number of parts. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic view of a switch circuit in a rear view mirror for a vehicle according to a first embodiment of the present invention, showing left and right door mirrors, a switch device, and wiring.

FIG. 2 is an electric circuit diagram showing a state in which a left / right switch is switched to a neutral position and power is supplied to heaters on both left and right sides.

FIG. 3 is an electric circuit diagram showing a state in which the left and right changeover switches are similarly switched to a right side changeover position to cut off the power supply to the left and right heaters.

FIG. 4 is an electric circuit diagram showing a state in which the left and right changeover switches are similarly switched to a left side changeover position, and energization to both right and left heaters is cut off.

FIG. 5 is an electric circuit diagram showing a state where the upper mirror is operated on the right mirror surface.

FIG. 6 is an electric circuit diagram showing a state in which the same operation has been performed on the lower mirror surface on the right side.

FIG. 7 is an electric circuit diagram showing a state where the right mirror surface has been operated to the right.

FIG. 8 is an electric circuit diagram showing a state where the left mirror surface is operated on the right mirror surface.

FIG. 9 is an electric circuit diagram in a state where the same operation has been performed on the left mirror surface.

FIG. 10 is an electric circuit diagram showing a state where the mirror has been operated downward on the left mirror surface.

FIG. 11 is an electric circuit diagram showing a state where the same operation has been performed on the right side of the left mirror surface.

FIG. 12 is an electric circuit diagram showing a state where the left mirror surface is operated to the left side.

FIG. 13 is an electric circuit diagram showing a second embodiment of the switch circuit in the automotive rearview mirror of the present invention.

FIG. 14 is a schematic diagram of a left and right side door mirror, a switch device, and wiring showing a switch circuit of a conventional automotive rearview mirror;

FIG. 15 is an electric circuit diagram when a heater switch is in an off state.

FIG. 16 is an electric circuit diagram when a heater switch is in an ON state.

[Explanation of symbols]

A. L: Left side door mirror, A. R: Right side door mirror, H. L: left heater, H. R: heater on the right,
M. L1... Left first motor; L2: second motor on the left side; R1... Right first motor; R2: Right second motor, SW: Switch device, 1: Mirror housing, 10: Mirror body, 11: Mirror assembly, 12: Mirror base, L1 to L4: Terminal on the left side door mirror side, R1 to R4: Right side Terminals on the door mirror side, S1 to S8... Terminals on the switch device side, 61 to 68.
Wiring, + power,-ground (earth), 71 to 7
4. Four-way remote control switch, 81, 82 Left / right switch, 9 Indicator light.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H02J 1/00307 H02J 1 / 00307Z

Claims (4)

[Claims] 1. A rearview mirror for a vehicle, comprising: a mirror housing; and a mirror body attached to the mirror housing so as to be tiltable in up, down, left, and right directions. A first motor on the right that inclines the right mirror body upward or downward by reversing, and a right motor that inclines the right mirror body right or left by forward or reverse rotation. A second motor; a first motor on the left side that causes the left mirror body to tilt upward or downward by rotating forward or backward; and a left motor body that rotates rightward by rotating forward or reverse. Alternatively, a left second motor that is tilted leftward, and left and right both sides that respectively remove water droplets and the like attached to the left and right mirror bodies. Switching between forward rotation and reverse rotation of the first motor on the right side, forward rotation and reverse rotation of the second motor, or forward rotation and reverse rotation of the first motor on the left side and forward rotation and reverse rotation of the second motor. A left / right switch that switches between energization of the first motor and the second motor on the right side and energization of the first motor and the second motor on the left side; A heater switch for turning on and off a heater; a first motor on the left and right sides; a second motor on the left and right sides; a heater on the left and right sides; the four-way remote control switch; And a wiring electrically connected between a power supply and a ground, comprising: a first motor, a second motor, and a heater-side terminal on both the left and right sides; And Ji and left and right changeover switch and the heater switch side terminals, in order to reduce the number of wiring between the two terminals, 1 of the left and right sides of the heater-side
A switch circuit in a rearview mirror for an automobile, wherein a common wiring is shared with a single wiring on a first motor and a second motor on the left and right sides. 2. The left and right selector switch comprises a three-position selector switch including a right-side switching position, a neutral position, and a left-side switching position in order to omit the heater switch. Connected to the ground and the power supply via the other one wiring of the side and the neutral position of the four-way remote control switch and the left / right changeover switch. When the left / right changeover switch is located at the neutral position, the left and right 2. The switch circuit according to claim 1, wherein the heaters on both sides generate heat. 3. The four-way remote control switch includes a normally closed first movable contact and a second movable contact in which a common wire or another wire of the heaters on the left and right sides is connected to a ground or a power supply. 3. The switch circuit according to claim 2, further comprising an open third movable contact and a fourth movable contact. 4. An indicator lamp, which is lit and displayed when the heater is in a heat generating state, is provided between the common wiring of the heaters on the left and right sides and the other wiring. Item 4. A switch circuit in an automotive rearview mirror according to item 2 or 3.