JPH0317334B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention applies to any drive motor for tilting the mirror surface of an electric remote control mirror for automobiles around a horizontal axis or around a vertical axis. This relates to a control switch for forward or reverse rotation.

[Conventional technology]

In an electric remote control mirror device for an automobile, a motor for tilting a mirror surface in vertical and horizontal directions is disposed within a mirror housing. The vertical tilting of the mirror surface is achieved by rotating one corresponding motor in the normal or reverse direction, and the horizontal tilting is achieved by rotating the other corresponding motor in the normal or reverse direction. Control of forward or reverse rotation of the motors is performed by a control switch including a control circuit disposed between each motor and a power source. The control switch is comprised of an operation switch for tilting the mirror up and down and left and right, and a changeover switch for tilting either the left or right mirror of the vehicle. Such a control switch was created by the inventor of the present application and is disclosed in Japanese Patent Application No. 59-271941 filed on December 26, 1988 by the applicant of the present application. A control circuit using such a control switch is shown in FIG. The control switch 10 includes motors A1 and 10 for tilting the left and right mirrors A and B of the automobile around the horizontal axis, respectively.
A first fixed contact 2 connected to one terminal of B1 via a slide contact 70 of a changeover switch.
0, a fixed contact pair 21 and 22 connected to the negative and positive poles of a power source 23, respectively, and a motor A2 for tilting the mirrors A and B around a vertical axis. , the slide contact 7 of the changeover switch is attached to one terminal of B2.
2, the second fixed contact 40 and the power supply 2 are connected via
A second fixed contact group consists of a pair of fixed contacts 41 and 42 connected to the negative and positive poles of the motors A1, B1, A2, and B2, respectively; 3 fixed contacts 50
and a third fixed contact group consisting of a pair of fixed contacts 51 and 52 connected to the negative and positive poles of the power source 23, respectively. These fixed contact groups are formed on the printed circuit board 14, and each fixed contact 20, 40, 50 has a bridge member 25, 45, 55 provided corresponding to each fixed contact group.
is connected to one of the fixed contact pairs. Usually, each fixed contact 20, 40,
50 is connected to the fixed contact connected to the negative pole of the power source 23, but the bridge member is elastically deformed only when the peripheral surface of the corresponding bridge member on the opposite side of the fixed contact receives an external force. Each fixed contact is connected to the one connected to the positive pole of the power source 23. These bridge members are configured to be pressed by a rectangular push plate that has vertical and horizontal tilting direction indicating portions on its surface, and has tapered surfaces on its back surface that contact the circumferential surfaces near both ends of each bridge member. The legs are integrally formed. Each bridge member is elastically deformed by the tapered surfaces of the two legs pressing the peripheral surface of the bridge member downward.

If it is desired to tilt, for example, the left mirror A of the two left and right mirrors using such a control switch, the slide contacts 70 and 72 constituting the changeover switch are slid to the right. The mirror A can be tilted in a desired direction by pushing any one of the U, D, L, and R display portions of the push plate. Figure 14 shows fixed contacts 20, 40, 50 during switching.
shows the polarity of For example, when the U display section is pushed, only the first bridge member 25 is elastically deformed, and only the fixed contact 20 is connected to the positive pole of the power source 23, and the other fixed contacts 40 and 50 are connected to the negative pole. It is in the same state as it is. Therefore motor A1
A current flows from the fixed contact 20 to the fixed contact 50, causing the motor A1 to rotate normally and the mirror A to tilt upward around the horizontal axis. Furthermore, when the D display section is pushed, the second bridge member 45
and the third bridge member 55 are elastically deformed, and both the fixed contact 40 and the fixed contact 50 are connected to the positive pole of the power supply 23, and a current flows from the fixed contact 50 to the fixed contact 20 in the motor A1. As a result, the motor A1 rotates in reverse, and the mirror A tilts downward about the horizontal axis. However, the fixed contact 20 remains connected to the negative pole of the power supply, and both the fixed contact 40 and the fixed contact 50 connect to the positive pole of the power supply 23 at the same time or at an earlier timing than the fixed contact 40. If the motor A1 is connected to the
If the terminal 0 is connected to the positive pole earlier than the fixed contact 50, a potential difference will occur between the input and output terminals of the motor A2 before the motor A1 is driven, which may cause malfunction. This means that
This also applies to the case where the R display section is pushed, and there is a problem that this is not preferable in terms of safe driving.

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly reliable control switch that is free from malfunction during switching.

[Means for solving problems]

In order to achieve the above object, the present invention includes a first fixed contact to be connected to one terminal of a motor for tilting the mirror around a horizontal axis;
a second fixed contact to be connected to one terminal of the motor for tilting the mirror about a vertical axis, a third fixed contact to be connected in common to the remaining terminals of the motor, and each of these fixed contacts; and first to third bridge members formed of conductive elastic bodies, each of which is slidably disposed so as to be connected to the negative pole of the power supply under normal conditions, and to the positive pole in the operating state, respectively. It has up and down and left and right tilting direction indicating parts arranged in relation to the bridge members, and a push plate for operating those bridge members. The first fixed contact pair is connected to the negative and positive terminals of the power supply, respectively.
to the third fixed contact, and the distance between the pair of fixed contacts corresponding to the third fixed contact is equal to the distance between the pair of fixed contacts corresponding to the third fixed contact.
The distance between the fixed contact pairs corresponding to the fixed contacts and the distance between the fixed contact pairs corresponding to the second fixed contacts are set to be smaller than the distances between the fixed contact pairs, so that the first to third bridge members respectively The present invention is characterized in that the sliding amount of the third bridge member is set to be smaller than the sliding amounts of the first and second bridge members when moving from the normal state to the operating state.

[Effect]

When the U display part or the L display part of the push plate is pushed, the first bridge member or the second bridge member is operated independently, and the first fixed contact or the second fixed contact is connected to the positive terminal of the power supply, respectively. , the motor for tilting the mirror around the horizontal axis or the motor for tilting the mirror around the vertical axis are rotated in the normal direction. When the D display portion of the push plate is pushed, both the second bridge member and the third bridge member are operated, but the sliding amount of the third bridge member is smaller than the sliding amount of the second bridge member. Therefore, the third bridge member is connected to the positive terminal of the power source at an earlier timing than the second bridge member, and no malfunction occurs. At this time, the motor that tilts the mirror around the horizontal axis is reversed. Furthermore, when the R display part of the push plate is pushed, both the first bridge member and the third bridge member are operated, but the third bridge member is operated.
Since the sliding amount of the bridge member is set to be smaller than the sliding amount of the first bridge member, the third bridge member is connected to the positive terminal of the power supply at an earlier timing than the first bridge member, which prevents malfunction. Does not occur. At this time, the motor that tilts the mirror about the vertical axis is reversed.

〔Example〕

Hereinafter, one embodiment of the control switch of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an outline of the arrangement of the fixed contact group and bridge member constituting the control switch, and FIG. 2 shows the entire main body. Reference numeral 10 indicates the entire control switch, and reference numeral 12 indicates the outer casing. The control switch 10 is arranged near the driver's seat of the automobile. The outer casing 12 is formed into a rectangular parallelepiped shape with openings at both ends, and a printed circuit board 14 on which a group of fixed contacts, which will be described later, is formed is disposed inside. The printed circuit board 14 is the holder 1
5, and the holder 15 is fitted into the outer casing 12.

As shown in FIG. 2, this control switch 10 has operation switches 16 arranged facing the upper opening 13 of the outer casing 12, which are arranged in correspondence with the four tilting directions of the remote control mirror, that is, the up-down and left-right directions. A switch 1 is in the form of a push plate having a direction indicator, and is used to select one of the mirrors disposed on the left and right sides of the vehicle body.
8 is exposed to the outside from the central opening 17 of the push plate 16 in the form of a switching knob. The four direction indicating portions of the push plate 16 are labeled U, D, L and R, respectively, in FIG.
The control switch 10 includes a switching mechanism and a control circuit that rotates the motor that drives the mirror in a specific direction by pushing one of the direction indicating parts of the push plate 16.
It is provided inside the main body. The details will be explained below.

FIG. 1 schematically shows the positional relationship between a plurality of fixed contact groups formed on the printed circuit board 14 and bridge members disposed corresponding to them.

The printed circuit board 14 is formed into a substantially rectangular shape, and its upper side corresponds to the U display part of the push plate 16, and its lower, left, and right sides are D, respectively.
Corresponds to L and R display sections. A first fixed contact 20 and a corresponding pair of fixed contacts 21 and 22 are arranged along the upper side so as to cover about 1/2 of the upper side. A first bridge member 25 is arranged to connect the first fixed contact 20 to either of the pair of fixed contacts 21 and 22, and normally connects the fixed contact 20 and the fixed contact 21.
A fixed contact 30 and a fixed contact 31 are arranged adjacent to the fixed contact 20, and a bridge member 35 bridges both the fixed contacts 30 and 31. These fixed contacts 30, 31, and bridge members 35 do not directly constitute a switching mechanism for tilting the mirror vertically and horizontally, but are arranged as so-called dummy fixed contacts and dummy bridge members. There is. Similarly, along the lower side of the printed circuit board 14,
The second fixed contact 40 and the corresponding pair of fixed contacts 41, 42 are disposed so as to cover about 1/2 of the lower side, and a second bridge member 45 is disposed correspondingly. The fixed contact 40 and one fixed contact 41 of the fixed contact pair are connected. A third fixed contact 50 is arranged adjacent to the second fixed contact 40. Third fixed contact 5
A fixed contact pair 51, 52 is arranged corresponding to 0,
Furthermore, a third bridge member 55 is correspondingly arranged and normally connects the third fixed contact 50 with one fixed contact 51 of the fixed contact pair. 1st
Fixed contact 20 and corresponding fixed contact pair 2
1, 22, a second fixed contact 40 and a corresponding pair of fixed contacts 41, 42, a third fixed contact 50 and a corresponding pair of fixed contacts 51, 52, a third fixed contact corresponding to the first to third fixed contacts The first to third bridge members 25, 45, and 55 constitute a switching mechanism for tilting the mirror in vertical and horizontal directions. The bridge member 35 is configured to elastically deform together with the first bridge member 25 or the second bridge member 45, respectively, when the U display portion or the L display portion of the push plate 16 is pushed by the operator. consists of push plate 1
Even when the other D display section or R display section 6 is pushed by the operator, the second bridge member 45
and the third bridge member 55 or the first bridge member 25 and the third bridge member 55 are configured to elastically deform in the same manner. That is, the bridge member 35 is disposed in order to obtain a uniform pressing feeling from the push plate 16. Here, the fixed contact pair 2 corresponding to the first fixed contact 20
The distance between 1 and 22 is b, and the fixed contact pair 4 corresponding to the second fixed contact 40
The distance between 1 and 42 is c, and the fixed contact pair 5 corresponding to the third fixed contact 50
If the distance between 1 and 52 is a, then the relationship between these distances is set so that a<b and a<c. That is, the sliding amount due to the elastic deformation of the third bridge member 55 is set smaller than the sliding amount due to the elastic deformation of the first bridge member 25 and the sliding amount due to the elastic deformation of the second bridge member 45.

Furthermore, an opening 57 provided in the center of the printed circuit board 14
A fixed contact 60 and a fixed contact 63 are located across the
and a sliding member 70 on which a fixed contact 65 is arranged.
push plate 1 so as to selectively connect fixed contact 60 to fixed contact 63 and fixed contact 65.
It is arranged parallel to the upper or lower side of 6. Similarly, a fixed contact 62, a fixed contact 64, and a fixed contact 66 are arranged, and a sliding member 72 is arranged correspondingly. These fixed contacts 60,
62, 63, 64, 65, 66 and slide members 70, 72 constitute a switching mechanism for tilting either the left or right mirror of the automobile.

The first bridge member 25, the dummy bridge member 35, the second bridge member 45, and the third bridge member 55 are made of conductive elastic bodies formed to have approximately the same size, and both ends of each are rounded. The bridge members are formed at sliding contacts, each of which has an auxiliary leaf spring disposed inside, reinforcing the elasticity of each bridge member. Furthermore, the slide member 70,
Reference numeral 72 is made of a conductive elastic body with slide contacts at both ends, and forms a switching member of the changeover switch 18, as will be described later, and these two slide members 70 and 72 are moved together. held in a slider. An inner casing 80 having accommodation spaces for accommodating each of the bridge members described above is fixedly held on the printed circuit board 14. The inner casing 80 includes the first bridge member 25 and the dummy bridge member 3.
5, and a box-shaped member 82 that accommodates the second and third bridge members 45, 55.
It is equipped with Each bridge member is housed within a corresponding box-shaped member with their sliding contacts in contact with the printed circuit board 14. A first bridge member 2 is provided in the center of each box-shaped member 81, 82.
Partition walls 86 and 87 are formed for separately accommodating the dummy bridge member 35, the second bridge member 45, and the third bridge member 55, respectively.

The partition wall portion 86 has an inclined surface 86a on the first bridge member 25 side and an inclined surface 86b on the dummy bridge member 35 side. Similarly, the partition wall portion 87 includes inclined surfaces 87a and 87b. These partition walls 8
The inclined surfaces constituting the first bridge member 25, the dummy bridge member 35, the second bridge member 45, and the third bridge member 5, respectively.
The lower ends of each of the partition wall portions 86 and 87 face into the openings 90 and 91, respectively.

Furthermore, holes 93, 94 and holes 95, 96 are formed at both ends of each box-shaped member 81, 82, respectively. Operating rods 100 and 102 formed to contact the circumferential surfaces of the first bridge member 25 and the dummy bridge member 35 on the side of the fixed contacts 21 and 31 are inserted into the holes 93 and 94 of the box-shaped member 81, respectively. ing. Similarly, actuating rods 104, 106 formed to contact the circumferential surfaces of the second and third bridge members 45, 55 on the fixed contacts 41, 51 side are inserted into the holes 95, 96 of the box-shaped member 82, respectively. has been done. Each operating rod 100, 102, 104, 10
6 is formed to be movable with respect to the inner housing 80, and one end of each is formed into a smoothly sloped surface within the box-shaped member, and is in contact with the circumferential surface near the slide contact of the corresponding bridge member, and has a tip end. The portions face holes 110, 112, 114, and 116 formed on the printed circuit board 14. On the other hand, the other end of each actuating rod extends to the outside of the inner housing 80, and the push plate 1
4 actuating rods 100, 102, 104, 10 with 6
It is supported by the protruding end of 6. In order for the push plate 16 to be supported in a horizontal state, it is necessary to maintain an equal amount of protrusion of each operating rod. Abutting stops 120, 122 and 124, 126 are formed. These stops are shown in FIG.

The push plate 16 has a pair of vertical walls 16 extending perpendicularly from a location along the edge of the central opening 12 on the back surface of the push plate 16 on the L display section and R display section sides.
a, 16b, and their lower ends meet the opening 8 of the inner housing 80 when the stopper of each actuating rod is in contact with the inner wall of the box-shaped member.
5 and completely engages with tapered surfaces 80a and 80b formed on the back surface of the inner housing.
For example, when the R display part of the push plate 16 is pressed, the lower end of the back vertical wall 16b on the R display part side of the push plate 16 completely separates from the tapered surface 80b on the back surface of the inner housing.
The vertical wall 16a on the L display side of the push plate and the tapered surface 80a on the back surface of the inner housing are completely engaged, and the engaged point S
It will rotate around the center. As a result, the R display part side of the push plate 16 is lowered by the stroke 1, and the inclined surfaces of the actuating rods 100, 106 corresponding to the R display part are moved to the first and third bridge members 25, respectively. It descends while pressing the circumferential surface of 55. At this time, the first and third bridge members 25, 55 are elastically deformed, and their sliding contacts separate from the fixed contacts 21, 51 and come into contact with the fixed contacts 22, 52, respectively.
At this time, the sliding contact of the third bridge member 55 is moved at a timing earlier than the sliding contact of the first bridge member 25. Similarly, when the L display section is pressed, the lower end of the vertical wall 16a of the push plate 16 is completely separated from the tapered surface 80a, and the vertical wall 16b on the R display section side is completely separated from the tapered surface 80a.
and the tapered surface 80b are completely engaged and rotate around the engaged part, and the L display part side moves down by stroke 1, and the actuating rods 102, 1
Press 04. As a result, the corresponding dummy bridge member 35 and second bridge member 45 are elastically deformed, and the sliding contact of the second bridge member 45 separates from the fixed contact 41 and comes into contact with the fixed contact 42. When the U display section or the D display section is further pressed, the vertical walls 16a and 16b of the push plate engage the ends of the box-shaped member 82 or the box-shaped member 81 with the tapered surfaces 80a and 80b, respectively. It is designed to rotate in the upright position. As a result, the U display section side or the D display section side of the push plate 16 is lowered by the stroke 1, and the actuating rod 100, 102 or 104 corresponding to the U display section or the D display section,
The inclined surfaces 106 each correspond to the first bridge member 2.
5 and the dummy bridge member 35, or the second bridge member 45 and the third bridge member 55, while pressing the peripheral surfaces thereof. At that time, the first bridge member 25 and the dummy bridge member 35 are elastically deformed, the slide contact that is in contact with the fixed contact 21 contacts the fixed contact 22, and the second and third bridge members
The bridge members 45 and 55 are also elastically deformed,
Each sliding contact is separated from the fixed contacts 41 and 51 and comes into contact with the fixed contacts 42 and 52, respectively. The sliding contact of the third bridge member 55 is moved at a timing earlier than the sliding contact of the second bridge member 45. Fixed contact 3
0 and 31 and the bridge member 35 are used not as components of a control circuit for switching as will be described later, but as a dummy to improve the well-balanced operability of the push plate 16. ing. In practice, 4
It is very important in the above-mentioned sense to arrange the four bridge members and the four actuating rods symmetrically, so that no matter which direction indicator on the push plate 16 the driver presses, the same pressing feeling is obtained. This will help you drive safely. Also, the feeling when pressing the push plate 16 is as follows.
A tactile feeling is required, and from this point of view the shape of the inclined surface of each actuating rod must be appropriately selected. This tactile feeling, that is, when the push plate 16 is pressed down and the distance that the push plate descends exceeds a certain distance, the force of the corresponding bridge member pushing up the plate becomes smaller, so that the driver feels a contact sensation. In order to do this, the contact angle between the inclined surface of each actuating rod and the peripheral surface of the corresponding bridge member, that is, the angle that the tangential plane makes with the printed circuit board, must be shaped so that it gradually changes within 45 degrees from the tip of the actuating rod. Just let it form. For example, W is the spring pressure of one bridge member,
If P1 is the force of one bridge member pushing up the push plate, and θ is the angle that the peripheral surface of the bridge member makes with the printed circuit board at the point where it contacts the actuating rod, then W=k1/tanθ and P1=W・sinθ・cos θ, and if r is the frictional force between the printed circuit board and the bridge member or the frictional force between the actuating rod and the bridge member, the force p pushing the push plate is p = 2
It is given by (P1+r)=2r+2kl・cos ² θ. However, k is the spring constant of the bridge member, and 1 is the distance (stroke) that the push plate descends. Here, θ needs to be 45 degrees or less, and if it is 45 degrees or more, r will become large, which is inappropriate.

Constituting the control switch of the present invention,
The control circuit for adjusting the tilting of the mirror surface is the first one.
This is shown in Figure 1. Fixed contact pair 21, 22; 4
1, 42; Fixed contacts 21, 4 among 51, 52
1 and 51 are each connected to the negative pole of the power source 23, and the fixed contacts 22, 42, and 52 are each connected to the positive pole. A first fixed contact 20 corresponding to the fixed contact pair 21 and 22 is connected to a fixed contact 60 and selectively connected to a fixed contact 63 or 65 via a slide member 70.
The fixed contact 63 is connected to one terminal of the motor A1 for tilting the left side mirror 120 of the car about the horizontal axis, and the fixed contact 65 is connected to one terminal of the motor B1 for tilting the right side mirror 122 of the car about the horizontal axis. connected to one terminal. The second fixed contact 40 corresponding to the fixed contact pair 41 and 42 is connected to the fixed contact 62 and connected to the fixed contact 6 via a slide member 72.
4 or 66. The fixed contact 64 is connected to one terminal of a motor A2 for tilting the left side mirror 120 of the car about a vertical axis, and the fixed contact 66 is connected to one terminal of a motor A2 for tilting the right side mirror 122 of the car about a vertical wall. It is connected to one terminal of B2. Further, a third fixed contact 50 corresponding to the fixed contact pair 51, 52 is connected to the motor A1, A2, B.
It is commonly connected to the remaining terminals of 1 and B2.

The control switch of the present invention includes:
The configuration of the changeover switch 18 for tilting either the left or right mirror of the automobile will be explained.

The changeover switch 18 is rotatably attached to a support 150 fixed to the holder 15. The support body 150 has a pair of ribs 152, which pass through a central opening 160 of the printed circuit board 14 and protrude toward the fixed contact side of the printed circuit board 14, and which are formed on the main body of the switch 18. A pair of protrusions are supported by a pair of small holes in the rib 152. The slide members 70 and 72 are sliders 154
housed within two elongated compartments formed in the
When the slider 154 moves, the two slide members 70 and 72 move simultaneously. There is an opening 15 approximately in the center of the slider 154.
6 is provided, and the shaft portion of the changeover switch 18 is inserted through this opening, and its lower end movably engages with a guide path 158 fixed to the holder 15. That is, a compression coil spring 181 is provided within the shaft portion 180.
A ball 182 is disposed, and a portion of the ball 182 is held in a state slightly protruding outward from the lower end of the shaft portion 180. Further, a cut groove 183 is formed at the tip of the shaft portion 180 and engages with a guide path 158 fixed to the support body 150. The state shown in FIG. 6 is a neutral position, in which the ball 182 is pushed into the shaft portion 180 against the elastic force of the coil spring 181, and a portion of the ball 182 is in the guide path 158. It is in contact. On the other hand, the operating knob 184 of the changeover switch 418 is inserted through the central opening 85 of the inner casing 80 and protrudes outward from the central opening 17 of the push plate 16 . When the operating knob 184 is rotated from the neutral position toward the R display section, the shaft section 183 pushes the opening wall of the slider 154 and the slider 154
slides U toward the L display section, and conversely, when the knob 184 is rotated toward the L display section, the slider 154 moves toward the R display section.
It is configured to slide toward the display section.
At this time, fixed contacts 60 and 62 are respectively fixed contacts 6
3, 64 or fixed contacts 65, 66.

Next, the operation of the control circuit using the control switch according to the present invention will be explained. First, when tilting the mirror 120 attached to the left side of the automobile, the operating knob 18 of the changeover switch 18
4 toward the R display portion of the push plate 16. Thereby, the fixed contacts 60 and 62 are connected to the fixed contacts 63 and 63, respectively. Fixed contact 6
0 and 62 are motor A1 and motor A2, respectively.
Since it is connected to two terminals, those terminals are connected to the negative pole of the power supply 23. The fixed contact 50 is always connected to the motor A1,
Since they are commonly connected to the remaining terminals of motors A2, B1, and B2, the remaining terminals of motors A1 and A2 are connected to the negative pole of the power source 23. In this state, all terminals of motors A1 and A2 are connected to the negative pole of power supply 23. Then, by pressing any display part of the push plate 16 with your finger, the motor A is activated.
Either A1 or A2 can be rotated forward or reverse.

For example, change the U display part of the push plate to
When pushed in the direction of the arrow in the figure, the corresponding actuating rod 10
0,102 is lowered, the actuating rod 100 acts on the first bridge member 25 to elastically deform it, and the first fixed contact 20 is connected to the fixed contact 22 connected to the positive pole of the power source 23. Therefore, as shown in FIG. 12, the fixed contact 63 connected to one terminal of motor A1 has a positive potential, the fixed contact 64 connected to one terminal of motor A2 has a negative potential, and Motor A
Since the third fixed contact 50 commonly connected to the other terminals of A1 and A2 is held at a negative potential, as a result, the motor A1 has a fixed contact 63.
A current flows from the third fixed contact 50 to the third fixed contact 50, causing the motor A1 to rotate normally, and the mirror 120 to tilt upward. Motor A2
The two terminals of are held at negative potential so that they are inactive. Next, when you press the D display, the corresponding actuating rods 104 and 106
act on the second and third bridge members 45 and 55, respectively, to elastically deform them. At this time, both the second and third fixed contacts 40 and 50 are connected to the fixed contacts 42 and 52, respectively, which are connected to the positive pole of the power source 23, but the sliding contact of the third bridge member 55 is connected to the second It moves at an earlier timing than the slide contact of the bridge member 45. Therefore, the fixed contact 63 connected to one terminal of the motor A1 has a negative potential,
The fixed contact 64 connected to one terminal of the motor A2 has a positive potential, and the third fixed contact 5
Since 0 is also held at a positive potential, as a result, the motor A1 has a voltage from the third fixed contact 50 to the fixed contact 6.
3, the motor A1 rotates in reverse, and the mirror 120 tilts downward. The two terminals of motor A2 are at the same positive potential, so they do not operate. Next, when you press the L display, the corresponding actuating rods 102 and 10
4 is activated, the dummy bridge member 35 and the second bridge member 45 are elastically deformed, and the second fixed contact 40 is held at a positive potential.

Therefore, the fixed contact 63 is held at a negative potential, the fixed contact 64 is held at a positive potential, and the third fixed contact 50 is held at a negative potential, so that as a result, the motor A
2, a current flows from the fixed contact 64 to the third fixed contact 50, causing the motor A2 to rotate normally and the mirror 120 to tilt leftward. Motor A
The two terminals of 1 are at the same negative potential, so they do not operate. Incidentally, when the U display section and the D display section are pressed, the dummy bridge member 35 is elastically deformed, but does not contribute to switching. Similarly R
When the display is pushed in the direction of the arrow in FIG.
and the third bridge member 55 are elastically deformed. At this time, the sliding contact of the third bridge member 55 moves at an earlier timing than the sliding contact of the first bridge member 25. At this time, the fixed contact 63 is held at a positive potential, the fixed contact 64 is held at a negative potential, and the third fixed contact 50 is held at a positive potential. A current flows toward the motor A2, causing the motor A2 to reverse, and the mirror 120 to tilt to the right. It can be seen that the two terminals of motor A1 do not operate because they have the same positive potential.

Mirror 12 attached to the right side of the car body
2, the operation knob 184 of the changeover switch 18 is rotated toward the L display portion of the push plate 16. As a result, the fixed contacts 60, 62
After connecting to the fixed contacts 64 and 65, respectively,
The same thing can be done if you perform the operations described above.

The control switch of the present invention can tilt a predetermined mirror only while pressing any one of the four directional support parts U, D, L, and R of the push plate 16, as shown in FIG. If the operating knob 184 is held at the neutral position as shown, the motor can be configured so that it will not operate even if the direction indicator is pushed by mistake.

In this embodiment, four bridge members 2
5, 35, 45, and 55 are formed to have the same size, but this is to improve the balance of the switching operation, and the bridge member 35 is essentially used as a dummy.
It should not be limited to these structures.

〔Effect of the invention〕

As explained above, the control switch of the present invention includes a first fixed contact to be connected to one terminal of the motor for tilting the mirror around the horizontal axis, and a first fixed contact to be connected to one terminal of the motor for tilting the mirror around the vertical axis. A second fixed contact to be connected to one terminal of the motor, a third fixed contact to be commonly connected to the remaining terminals of the motor, and each of these fixed contacts is normally connected to the negative pole of the power supply. , and first to third bridge members formed of a conductive elastic body, which are slidably arranged so as to be connected to the positive electrode in the operating state, and arranged in relation to these bridge members. It has vertical and horizontal tilting direction indicating parts, and is composed of a push plate for operating these bridge members. Pairs of fixed contacts connected to the negative and positive poles of the power source are arranged corresponding to the first to third fixed contacts, and the distance between the pair of fixed contacts corresponding to the third fixed contact is equal to The distance between the fixed contact pairs corresponding to the contacts and the distance between the fixed contact pairs corresponding to the second fixed contacts are set to be smaller than the distances between the fixed contact pairs corresponding to the contacts, so that the first to third bridge members each normally When moving from the state to the operating state, the sliding amount of the third bridge member is set to be smaller than the sliding amount of the first and second bridge members, so each direction indicating portion of the push plate is pressed. When the motor moves, the first fixed contact and the second fixed contact are not connected to the positive pole of the power supply earlier than the third fixed contact, so malfunction of the motor can be completely prevented. .

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the contact structure constituting the control switch of the present invention, Fig. 2 is a perspective view showing the entire control switch, Fig. 3 is a longitudinal sectional view,
4 is an exploded perspective view, FIG. 5 is a rear view of the closure housing the bridge member, FIG. 6 is a sectional view taken along line 6-6 in FIG. 2, and FIG. 7 is 7-7 in FIG. 2.
8 is an explanatory diagram of the operation of the push plate and the operating rod, FIGS. 9 and 10 are explanatory diagrams of the operation switch, and FIG. 11 is a control circuit diagram using the control switch of the present invention. FIG. 12 is an explanatory diagram of the operation of the control circuit, FIG. 13 is a diagram of a control circuit using a conventional control switch, and FIG. 14 is an explanatory diagram of the operation of the control circuit. 10... Control switch, 12... Outer casing, 14... Printed circuit board, 15...
...Holder, 16...Push plate, 18...
...Switchover switch, 20, 21, 22... Fixed contact, 25... First bridge member, 35... Dummy bridge member, 40, 41, 42... Fixed contact, 45... Second bridge member, 50, 51,
52... Fixed contact, 55... Third bridge member, 60, 62, 63, 64, 65, 66... Fixed contact, 70, 72... Slide member, 80...
Closing body, 80a, 80b...Tapered surface, 81, 8
2...Box-shaped part, 100, 102, 104, 10
6... Operating rod, 120, 122... Mirror, 15
0... Support body, 152... Rib, 154... Slider, 184... Operation knob.

Claims (1)

[Claims] 1. A first fixed contact connected to one terminal of a motor for tilting the mirror surface of an electric remote control mirror for an automobile around a horizontal axis, and one of the motors for tilting a mirror surface of an electric remote control mirror for an automobile around a vertical axis. a second fixed contact connected to the terminal of the two motors, and a third fixed contact commonly connected to the other terminal of the two motors.
The fixed contact and the first to third fixed contacts are each formed of a conductive elastic body that is slidably disposed so as to be connected to the negative pole of the power supply under normal conditions, and to be connected to the positive pole in the operating state. It is composed of a first to third bridge member, and a push plate provided with a vertical and horizontal tilting direction indicating section disposed in relation to the first to third bridge member, and the push plate is configured to indicate each direction of the push plate. In the control switch for tilting the mirror in a predetermined direction by operating a related bridge member by pressing a part, a fixed contact pair connected to a negative pole and a positive pole of the power source, respectively, is connected to the first or a third fixed contact, and the distance between the pair of fixed contacts corresponding to the third fixed contact is equal to the distance between the pair of fixed contacts corresponding to the first fixed contact and the second fixed contact. The distance between the corresponding pairs of fixed contacts is set to be smaller than the distance between the pairs of fixed contacts, so that the sliding amount of the third bridge member is smaller than the sliding amount of the first and second bridge members. A control switch characterized by being set to .