JPS6131569B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact circuit for a switch. especially,
The present invention relates to a contact circuit for a switch suitable as a remote control switch for an automobile rear endoscope that tilts the left and right rear endoscopes up and down and left and right, respectively.

A conventional circuit of this kind, for example, used for tilting a remotely controllable rear endoscope for an automobile, uses two changeover switches A and B, as schematically shown in FIG.
By operating one switch A, the left rear scope is moved vertically by motor Ma.
By operating the other switch B, the right rear endoscope is tilted vertically by motor Mb, and horizontally by motor Mb'.

In this way, the motors Ma, each acting independently,
In the above-mentioned device equipped with a set of motors Ma' and a set of motors Mb and Mb', independent changeover switches A and B are usually used for each set, and the changeover switches are used selectively. Therefore, it is necessary to connect the changeover switch of each group to the pair of motors of that group, which not only complicates the wiring structure but also leads to misuse. There is a risk.

The present invention improves the problems of the prior art as described above, allows one four-way sliding switch to be used in common for two sets of energized parts, and particularly simplifies its wiring structure. The present invention aims to provide a contact circuit for a switch that can perform the following functions.

An embodiment of the present invention will be described below.

In this example, the switch contact circuit of the present invention is applied to a remotely controllable automobile rear endoscope, and the energized part consists of a pair of motors that tilt the rear endoscope left and right and up and down. There are two sets of such energized parts, one for operating the left rear scope and the other for operating the right rear scope. Further, as a changeover switch, a single four-way sliding switch configured to achieve a desired changeover is used, and an auxiliary switch is also used.

In other words, the switch contact circuit of this example is as follows:
As shown in FIG. 1, a four-way sliding switch 1 configured to achieve desired switching, an auxiliary switch 5 having three contacts, and energized parts 7a and 7b consisting of a pair of energized members (motors) The central contact 52a of the auxiliary switch 5 is connected to the common contact 42 of the four-way sliding switch 1, and the contact 52b on one side of the auxiliary switch 5 is connected to one of the energized parts. The contact 52c on the other side of the auxiliary switch 5 is connected to the common contact of the pair of current-carrying members (motors M ₁ , M ₂ ) of the group 7a, and the contact 52c on the other side of the auxiliary switch 5 is connected to the common contact of the pair of current-carrying members (motors M 1 , M 2 ) of the group 7a. Current-carrying member (motor
Connect to the common contact of M ₃ , M ₄ ).

With the above configuration, when the switching contact 51 of the auxiliary switch 5 is brought into contact with the contact 52b, only one energized part 7a is energized, and in this example, the right rear endoscope is operated. The installed motors M ₁ and M ₂ come into operation. Conversely, when the switching contact 51 is brought into contact with the contact 52c, the other energized part 7b is energized, and the motors M ₃ and M _{4 are} energized.
This allows you to operate the left rear endoscope.

One terminal of each of the motors M ₁ and M ₂ becomes a common contact point by double inserting the harness into the insertion position 60' in the connector 60,
Connect to contact 52b of auxiliary switch 5. Similarly, the motors M ₃ and M ₄ also have a common contact at the insertion position 61' of the connector 61, and are connected to the contact 52c of the auxiliary switch 5.

The four-way slide switch has common contacts and is configured to achieve the desired switching.
That is, on the conductive portion 4 formed on the substantially square nonconducting planar member 3, substantially right triangular contact pieces 2a and 2b made of a good conductive metal are placed on the substantially square nonconducting planar member 3, respectively. The right triangles are arranged oppositely so that the right angles correspond to the vertices of the diagonal squares. The contact pieces 2a, 2b have contact portions 21a, 22a, 23a, and 21 near the positions corresponding to the apexes of the triangle.
b, 22b, and 23b are provided protrudingly.

The conductive part 4 of this four-way sliding switch includes a first conductive part 41 formed in a substantially square shape at one corner of the substantially square planar member 3, and a first conductive part 41 formed in a substantially square shape at the opposite corner. A fourth conductive portion 44 formed in the above-mentioned shape extends from approximately the center of two sides of the planar member 3 so as to surround the first conductive portion 41, meets at the center of the planar member 3, and further surrounds the fourth conductive portion 44. a second conductive part 42 which is divided into two parts and is located approximately in the center one-third of the other two sides of the planar member 3 to form a common contact point;
It consists of a third conductive part 43 extending in a horizontal L-shape from another corner, and a fifth conductive part 45 extending in an inverted L-shape from a corner opposite to this corner. Therefore, this conductive part 4 has a shape that is line symmetrical with respect to the diagonal line connecting the corner part of the first conductive part 41 and the corner part of the fourth conductive part 44. Circular notches 41' and 44' are provided slightly inside the center of the first conductive part 41 and the fourth conductive part 44.

Both terminals of the power supply V are connected to such a conductive part, the first conductive part 41 and the fourth conductive part 44, and the center contact 52a of the auxiliary switch 5 is connected to the second conductive part 42 which forms a common contact. The third conductive part 43 is connected to one terminal of the motors M ₁ and M ₄ , and the fifth conductive part 45 is connected to one terminal of the motors M ₂ and M ₃ . In this way, desired switching is performed by simultaneously sliding the contact pieces 2a and 2b using an arbitrary sliding mechanism.

Hereinafter, an example will be described in which the switching contact 51 of the auxiliary switch 5 is pushed in the direction of the arrow R to energize the energized member 7a (the tilting motors M ₁ and M ₂ of the right rear endoscope).

In the neutral position, the first contact portion 21a of the contact piece 2a is located on the notch 41', and the second contact portion 2a is located on the notch 41'.
2a is located on the insulation part between the second conductive part 42 and the third conductive part 43, and the third contact part 23a is located on the insulation part between the second conductive part 42 and the fifth conductive part 45. Arrange it so that it does. Similarly, the contact piece 2b is arranged symmetrically thereto, and each contact part is configured so as not to come into contact with any conductive part.

With this setting, when the contact pieces 2a and 2b are slid upward, as shown in FIG.
The first contact portion 21a comes off from the cutout portion 41 and comes into contact with the first conductive portion 41, and the second contact portion 22a comes into contact with the second conductive portion 41.
Contact with the conductive part 42. The third contact portion 23a remains not in contact with the conductive portion. At the same position, the first contact part 21b of the contact piece 2b is removed from the notch 44' and comes into contact with the fourth conductive part 44, and the second contact part 2
2b does not contact the conductive part, and the third contact part 23b contacts the third conductive part 43. Therefore, in this position, power supply V→first conductive part 41→contact piece 2a
→ Second conductive part 42 → Auxiliary switch 5 → Motor M ₁
→Third conductive portion 43→Contact piece 2b→Fourth conductive portion 44
→The circuit called power supply is closed and motor _M1 rotates.

Next, when the contact parts 2a and 2b are slid downward, the first contact part 21a of the contact piece 2a is removed from the cutout part 41 and the first conductive part 41 is removed, as shown in FIG.
The second contact portion 22a contacts the third conductive portion 43, and the third contact portion 23a does not contact the conductive portion. Further, at the same position, the first contact portion 21b of the second contact piece 2b similarly contacts the fourth conductive portion, the second contact portion 22b does not contact the conductive portion, and the third contact portion 23b contacts the second conductive portion. 42. Therefore, in this position, power supply V → first conductive part 41 → contact piece 2a → third conductive part 43 → motor M ₁ → auxiliary switch 5 → second conductive part 42 → contact piece 2b → fourth conductive part 44 →The circuit called power supply V is closed, and motor _M1
The motor M1 is energized, but the direction of the current is reversed, so the motor _M1 rotates in the opposite direction.

Next, when the contact pieces 2a and 2b are slid to the left, the first contact part 21a of the contact piece 2a comes into contact with the first conductive part 41, and the second contact part 2
2 a does not contact the conductive part, and the third contact part 23 a contacts the second conductive part 42 . Further, at the same position, the first contact portion 21b of the contact piece 2b contacts the fourth conductive portion 44, and the second contact portion 22b contacts the fifth conductive portion 44.
5, and the third contact portion 23b does not contact the conductive portion. Therefore, at this position, the power supply V→
First conductive part 41 → contact piece 2a → second conductive part 42 →
Auxiliary switch 5 → motor M ₂ → fifth conductive part 45 →
The circuit of contact piece 2b→fourth conductive portion 44→power supply V is closed, and motor _M2 rotates.

Next, when the contact pieces 2a and 2b are slid to the right, the first contact part 21a of the contact piece 2a comes into contact with the first conductive part 41, and the second contact part 2
2 a is not in contact with the conductive part, and the third contact part 23 a is in contact with the fifth conductive part 45 . Further, at the same position, the first contact portion 21b of the contact piece 2b contacts the fourth conductive portion 44, and the second contact portion 22b contacts the second conductive portion 44.
2, and the third contact portion 23b does not contact the conductive portion. Therefore, in this position, power supply V → first conductive part 41 → contact piece 2a → fifth conductive part 45 → motor M ₂ → auxiliary switch 5 → second conductive part 42 → contact piece 2b → fourth conductive part 44 →The circuit called power supply V is closed, and motor _M2 rotates in the opposite direction.

In this case, when motor _M1 rotates forward, the rear scope tilts upward, and when it rotates backward, it tilts downward.
If motor _M2 is set so that it tilts to the left when it rotates forward, and tilts to the right when it rotates in the reverse direction, the rear scope will also tilt in the same direction as the contact pieces 2a and 2b are slid. Tilt. For example, when the contact piece is slid upward as shown in FIG. 2, the rear endoscope is also tilted upward. In this way, the direction in which the switch is operated and the direction in which the rear endoscope is tilted match, so that the switch can be operated with the same feeling as if it were operated directly, and erroneous operations are extremely reduced.

In the above, the case where the auxiliary switch 5 is placed beside the energized part 7a has been explained, but the same applies when the energized part 7b (that is, the motors M ₃ and M ₄ that tilt the left rear scope) is energized. It is.

As described above, the contact circuit for a switch of the present invention includes a four-way sliding switch configured to achieve desired switching, an auxiliary switch having three contacts, and two sets of energized parts each consisting of a pair of energized members. The four-way sliding switch has a conductive part formed on a substantially square non-conducting flat member, and a substantially right triangular conductive part arranged so as to be able to slide horizontally and vertically on the conductive part. Consisting of a pair of contact pressure made of metal,
The conductive parts include a first conductive part formed in a substantially square shape at one corner of the substantially square nonconducting planar member, and a fourth conductive part formed in a similar shape at the opposite corner. a conductive portion, extending from approximately the center of two sides of the planar member so as to surround the first conductive portion, meeting at the center of the planar member, and further dividing into two so as to surround the fourth conductive portion, and the other side of the planar member. Approximately the middle third of the two sides
a second conductive part forming a common contact located over a certain distance, and a third conductive part extending in a horizontal L-shape from the other corner part.
It is composed of a conductive part, and a fifth conductive part extending in an inverted L shape from a corner opposite to the corner of the third conductive part, and is an abbreviation of the first conductive part and the fourth conductive part. A notch is provided in the center, and the pair of contact pieces are
First to third contact portions are provided protrudingly at positions corresponding to each vertex of the triangle, and in the neutral position, the first contact portion of each contact piece is located on the notch, and the second and third contact portions are located on the notch portion. The third contact part is the second
The auxiliary switch is arranged so as to be located on the insulating part between the conductive part and the conductive part adjacent to the conductive part on the opposite side of the first and fourth conductive parts, and the four-way sliding A second conductive part, which is a common contact of the switch, is connected, and a contact on one side of the auxiliary switch is connected to a common contact of a pair of current-carrying members of one set of the current-carrying parts, and the other side Since the contact is connected to the common contact of the other pair of current-carrying members of the current-carrying parts, it is possible to operate two sets of current-carrying parts with one four-way sliding switch. In particular, the wiring structure can be significantly simplified.

In the illustrated embodiment, the tilting direction of the rear endoscope, which is the operated member, matches the operating direction of the four-way sliding switch, so the operation is intuitively easy, and erroneous operations are further reduced. It has the effect of being

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention. FIGS. 2 to 5 are explanatory diagrams showing the contact relationships at different operating positions of the four-way sliding switch used in this example. FIG. 6 is a schematic diagram showing a conventional example. 1... Four-way sliding switch, 41 to 45... First to fifth conductive parts, 2a, 2b... Contact piece, 21
a~23a, 21b~23b...Contact part, 5...
Auxiliary switch, 52a... central contact of the auxiliary switch, 52b, 52c... contacts on both sides of the auxiliary switch, 7a, 7b... energized parts.

Claims (1)

[Claims] 1. A four-way sliding switch configured to achieve the desired switching, and an auxiliary switch with three contacts,
Two sets of energized parts each consisting of a pair of energized members are provided,
The four-way sliding switch has a conductive part formed on a substantially square non-conducting planar member, and a substantially right triangular good conductive metal arranged so as to be able to slide left and right, up and down on the conductive part. a pair of contact pieces; a fourth conductive part formed in a similar shape to the first conductive part; and a fourth conductive part extending from approximately the center of two sides of the planar member so as to surround the first conductive part, joining at the center of the planar member, and further surrounding the fourth conductive part. and approximately the center 3 of the other two sides of the planar member.
A second conductive part forming a common contact located over about one-quarter of the width of the second conductive part, a third conductive part extending in a horizontal L-shape from another corner, and a third conductive part facing the corner of the third conductive part. a fifth conductive part extending in an inverted L shape from a corner, and the first conductive part and the fourth conductive part.
A notch is provided approximately in the center of the conductive part, and each of the pair of contact pieces has first to third contact parts protruding at positions corresponding to the vertices of the triangle, and each contact piece in the neutral position. The first contact portion of the piece is located on the notch, and the second and third contact portions are located between the second conductive portion and the adjacent conductive portion on the opposite side from the first and fourth conductive portions. The central contact of the auxiliary switch has a second contact, which is a common contact of the four-way sliding switch.
The conductive parts are connected, and the contact on one side of the auxiliary switch is connected to the common contact of a pair of current-carrying members in one set of the current-carrying parts, and the contact on the other side is connected to the common contact of a pair of current-carrying members in one set of the current-carrying parts. A contact circuit for a switch, characterized in that the contact circuit is connected to a common contact of a pair of energized members of the other set.