JPH04334826A - Interlocking type push-button switch - Google Patents

Abstract

PURPOSE:To reduce the number of part items, to improve assembly efficiency, and to simplify the constitution of a complicated switch circuit. CONSTITUTION:This interlocking type push-button switch furnishes a switch case 1, switch knobs 2 and 3, switch springs 4 and 5, a change-over piece 6, movable armatures 7, 8, and 9, and a moderating means 11. The change-over piece 6 is installed rotatable to the switch case 1. The change-over piece 6 furnishes the movable armatures 7, 8, and 9, and connected to the switch knobs 2 and 3. All functions are incorporated in such a constitution.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to improvements in interlocking pushbutton switches such as two-interlocking pushbutton switches.

0002

[Prior Art] Conventionally, this type of interlocking pushbutton switch has a converter provided for interlocking each switch knob,
In order to open and close the switch, components such as a movable platen and a movable contact piece were formed separately. For example, in the interlocking type push button switch disclosed in Japanese Utility Model Application Publication No. 63-6636, a converter is pivotally supported in a switch case, a switch knob is engaged with each end of the converter, and a moderation member is attached to the switch knob. The movable platen with the moderation member inserted therein was engaged with the movable platen, and a movable contact piece was further provided which oscillated when pressed by the moderation member.

0003

[Problems to be Solved by the Invention] In this way, the conventional interlocking type pushbutton switch has at least the converter, movable platen, and movable contact piece formed separately, and has a large number of parts, making it difficult to assemble. It's bad. Furthermore, it was difficult to configure a complex switch circuit.

0004

[Means for Solving the Problems] In view of the drawbacks of the prior art, it is an object of the present invention to reduce the number of parts and improve ease of assembly by integrating the functions of a converter, a movable platen, and a movable contact piece. The present invention also aims to simplify the configuration of a complicated switch circuit. For details, in order to achieve the above purpose,
a switch case; a plurality of switch knobs housed in the switch case; a spring that urges the switch knobs outward from the switch case; a converter engaged with the converter; a movable contact piece provided on the converter and slidingly in contact with a fixed contact formed on an inner wall of the switch case; and a movable contact piece provided to hold the converter at a predetermined position within a swing range. To provide an interlocking type pushbutton switch characterized in that it is equipped with a moderation means.

[0005]

[Embodiment] Figures 1, 2, and 3 are drawings showing preferred embodiments of the present invention. Figure 1 is a front view of a switch case equipped with a converter, and Figure 2 is a switch case equipped with a fixed contact. A front view of the board, and FIG. 3 is a sectional view of the main part.

In the figure, 1 is a switch case, 2 and 3 are a plurality of switch knobs housed in the switch case 1, and 4 and 5 are switch knobs 2 and 3 attached to the outside of the switch case 1. It is a spring that acts as a force. Also, 6 is
This is a converter that is pivotably supported on the switch case 1 and engaged with the switch knobs 2 and 3. Also 7,
Reference numerals 8 and 9 designate movable contact pieces that are provided on the converter 6 and that slide into fixed contacts 10b to 10g formed on the inner wall 10a of the pole plate 10, which is a part of the switch case 1. Further, reference numeral 11 denotes moderation means provided to hold the converter 6 at a predetermined position within the swinging range.

More specifically, the switch case 1 has two guide plates 1b and 1c integrally formed on the inner wall 1a. The guide plates 1b and 1c are connected to the switch knobs 2 and 3.
They are inserted into slits 2a and 3a provided in the switch knobs 2 and 3 to guide the springs 4 and 5 and to support the lower ends of the springs 4 and 5. The switch case 1 further includes a shaft portion 1d that pivotally supports the converter 6, and the moderation means 1.
A cylindrical portion 1e constituting a part of the cylindrical portion 1 is integrally formed. The cylindrical portion 1e has two grooves 1f and 1g on the opening side of the side wall, and accommodates a spring 1h and a ball 1i inside.

The switch knobs 2 and 3 have support holes 2b and 3b for supporting the springs 4 and 5, and long holes 2c and 3c for engaging the converter 6, in addition to the slits 2a and 3a. Specifically, the converter 6 and the long holes 2c and 3c of the switch knobs 2 and 3 are engaged with each other via engagement pins 6a and 6b provided on the converter 6.

The converter 6 has the engaging pins 6a and 6.
In addition to b, there are square holes 6c for housing the movable contact pieces 7, 8 and 9,
6d and 6e, a round hole 6f into which the shaft portion 1d of the switch case 1 is fitted, and a protrusion 6g which constitutes the moderating means 11 together with the cylindrical portion 1e, the grooves 1f, 1g, the spring 1h and the ball 1i. The projection 6g is in contact with the ball 1i. Further, springs 6h, 6i and 6j are mounted inside the square holes 6c, 6d and 6e to urge the movable contact pieces 7, 8 and 9 toward the pole plate 10 side.

As shown in FIG. 3, the pole plate 10 has a plurality of conductor plates 10h formed by insert molding, one end of which is exposed on the inner wall 10a of the pole plate 10, and fixed contacts 10b to
10g is integrally constructed, and the other end protrudes into the connector portion 10i to integrally constitute a terminal 10j.

The embodiment described above operates as follows. That is, when the switch knob 3 is pushed in the direction of the arrow A in FIG. 1, the switch knob 3 moves to the B position and the converter 6 swings counterclockwise. Then, the protrusion 6g of the converter 6 rides over the ball 1i against the repulsive force and holds it at the rotational position C in FIG. 1. As a result, the movable contact 7 bridges between points a and b shown in FIG. 2, similarly, the movable contact 8 bridges between points c and d, and the movable contact 9 bridges between points e and f. get in touch. At this time, the switch knob 2 protrudes to the D position.

Next, when the switch knob 2 is pushed in the direction of arrow E in FIG. 1, the switch knob 2 moves to position B, and the converter 6 swings clockwise. Then, in the converter 6, the protrusion 6g overcomes the ball 1i against the repulsive force, as shown in FIG.
Hold it at rotational position F. As a result, movable contacts 7, 8
and 9 bridge the points g and h, the points i and j, and the points k and l shown in FIG. 2, respectively. At this time, the switch knob 3 projects to the D position. The connection relationships of the fixed contacts 10b to 10g of the pole board 10 are changed by the swinging motion of the converter 6 in response to the operation of the switch knobs 2 and 3.

[0013]

[Effects of the Invention] As explained in detail above, the interlocking type pushbutton switch according to the present invention integrates the functions of the converter, movable platen, and movable contact piece, so that the number of parts can be reduced. In addition, the assembly is easy to assemble, and a complex switch circuit can be easily constructed.

[Brief explanation of drawings]

FIG. 1 is a front view of a switch case equipped with a converter showing a preferred embodiment of the present invention.

FIG. 2 is a front view of a pole board that is combined with the switch case shown in FIG. 1;

FIG. 3 is a sectional view of a main part showing a preferred embodiment of the present invention.

[Explanation of symbols]

1 Switch case 2, 3 Switch knob 4,5 Spring 6　Converter 7, 8, 9 Movable contact piece 10　Kokuban 10b-10g Moderation means

Claims (1)

[Claims] 1. A switch case, a plurality of switch knobs housed in the switch case, a spring that urges the switch knobs outward from the switch case, and a switch knob rotatably supported on the switch case, and a converter engaged with the switch knob, a movable contact piece provided on the converter and slidingly in contact with a fixed contact formed on an inner wall of the switch case, and a movable contact piece that moves the converter at a predetermined position within a swing range. An interlocking type pushbutton switch characterized by comprising: a moderation means provided to hold the switch.