JPH0637546Y2 - Sliding switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sliding switch in which the durability of contacts and the operation feeling are improved.

[Prior Art] Conventionally, as this kind of technology, there is one disclosed in Japanese Utility Model Laid-Open No. 61-151214.

The related art is a switch having a structure in which a movable terminal is slid on a fixed terminal fixed to a wafer, in which a protruding portion is formed at the movable terminal return position of the wafer, and the contact of the movable terminal floats when returning. It had been.

Further, with the above structure, since the movable contact is scraped away from the powder, no arc is generated, the withstand voltage is improved, and the product life can be extended.

[Problems to be Solved by the Invention] However, the above-mentioned conventional technique relates to a switch of a response switch type used for a refrigerator door or the like, and consideration was given to an operation feeling in the case of manual operation. It had no structure.

[Means for Solving Problems] The present invention addresses the above-mentioned problems, and an object thereof is to provide a sliding switch having excellent durability and improved operation feeling, and means therefor. As
In a sliding switch having a movable contact piece that slides on an installation surface of a fixed part on which a fixed contact is installed and comes into contact with the fixed contact at an on position, a knob and an operating rod that moves together with the knob. A spring for automatically returning the knob, the fixed contact, the fixed portion on which the movable contact piece slides and the installation surface is flat, and a member for lifting one end side of the movable contact piece at the off position. A mating portion, an action portion that abuts the engagement portion at one end, a support portion that supports the operating rod at the other end, a constant contact portion that is located near the support portion and always abuts the fixed portion, the action The movable contact having a contacting / separating portion located near the contacting portion and contacting / separating from the fixed portion, and a pressing portion located between the contacting / separating portion and the constant contact portion and pressed to the fixed contact side by an elastic member. A piece, a first fixed contact that is in contact with the constant contact portion, and the contact and separation portion. And a said stationary contact comprising a second stationary contact touch.

[Operation] The sliding switch according to the present invention having the above means operates as follows.

For example, when the sliding switch is operated to the ON position, the movable contact piece comes into contact with the fixed contact to form an electrically closed circuit.

Next, when the sliding switch is operated to the off position, one end side of the movable contact piece is lifted against the pressing force of the elastic member, whereby the movable contact piece is separated from the fixed contact and the electric circuit is opened.

[Embodiment] FIG. 1 is a vertical sectional view of a sliding switch A according to a preferred embodiment of the present invention.

In the figure, reference numeral 1 is a knob such as a push button switch, which has an operating rod 1a formed in a protruding manner. The operating rod 1a includes a pin 3 that engages with a cam groove 2a formed on the case 2, a support portion 4b at one end of a movable contact piece 4, and an elastic member 5 including a compression spring.
And support. The pin 3, the movable contact piece 4, and the elastic member 5 move in the case 2 in the left-right direction in the case 2 by the pressing operation of the knob 1.

In the case 2, the knob 1 is arranged on one side so as to be movable back and forth, the connector section 11 is formed on the other side, and the terminal 12 is arranged in the connector section 11. The case 2 includes a first fixed contact 7,
The fixed portion 6 having the second fixed contact 8 and the lamp 9 is internally provided. On the fitting side of the knob 1 of the case 2, an engaging portion 10 which doubles as a light guide of the lamp 9 and which the operating portion 4a of the movable contact piece 4 rides at the off position is integrally formed.

The movable contact piece 4 will be described in detail. The movable contact piece 4 is formed by press-molding a metal material. The movable contact piece 4 is brought into contact with the engaging portion 10 at the off position of the slide switch A and one end of the movable contact piece 4 is contacted. 4a which lifts up and separates the contact / separation part 4d from the second fixed contact 7
A supporting portion 4b located on the opposite side of the operating portion 4a and supported by the operating rod 1a, a first fixed contact 7 between the supporting portion 4b and the operating portion 4a by an elastic member 5, and 2 fixed contact 8
The movable contact piece 4 is pressed to the side, a contacting / separating portion 4d that contacts the second fixed contact 8 at the on position and separates from the second fixed contact 8 at the off position, and the first fixed contact 7 at all times. And a constant contact portion 4e that slides.

In the elastic member 5, the movable contact piece 4 has the first fixed contact 7 and the second fixed contact 7.
This is a spring for urging the fixed contact 8 to press it.

The fixed portion 6 has a first fixed contact 7, a second fixed contact 8 and a lamp 9, and is provided inside the case 2. Movable contact piece 4
The mounting surface 6a of the fixed portion 6 on which the first fixed contact 7 and the second fixed contact 8 are slid on is a flat surface as shown in FIGS. 1 and 2.

In FIG. 1, 13 is a spring for pushing the knob 1 to the left in FIG. 1 to return the knob 1 to the OFF position. The spring 13 is interposed between the operating rod 1a and the fixed portion 6.

Next, the operation of the sliding switch A having the above-mentioned configurations will be described.

First, when the sliding switch A is in the off position as shown in FIG. 1, the action portion 4a of the movable contact piece 4 is in the state of riding on the engagement portion 10, and the movable contact piece 4 is moved from the second fixed contact 8 to Away,
There is no electrical connection between the first fixed contact 7 and the second fixed contact 8.

Next, when the knob 1 is pushed once, the sliding switch A is locked in the ON position by the action of the pin 3 and the cam groove 2a, and the movable contact piece 4 moves to the right in FIG. Two
It will be in the state shown in the figure. At this time, the acting portion 4a of the movable contact piece 4
Is disengaged from the engaging portion 10, and the movable contact piece 4 is brought into contact with the second fixed contact 8.

As a result, the first fixed contact 7 and the second fixed contact 8 are electrically connected.

Further, when the knob 1 is pushed once, the sliding switch A is moved to the pin 3
Also, the locked state due to the cam groove 2a is released, and the cam is returned to the off position again.

More specifically, in FIG. 2, while the movable contact piece 4 moves from the on position shown by the solid line to the off position shown by the phantom line,
The movable contact piece 4 contacts and slides on the first and second fixed contacts 7 and 8 until the action portion 4a hits the engagement portion 10. After the action portion 4a hits the engaging portion 10, the action portion 4a rides on the engaging portion 10 and the movable contact piece 4 moves to the second fixed contact 8
Get away from.

In this way, since the movable contact piece 4 is separated from the second fixed contact 8 as it is lifted in the off position, when the movable contact piece 4 rides on the insulator at the peripheral portion of the second fixed contact 8 and is turned off. Carbonization due to the arc does not occur, the connection life is extended, and the movable contact piece 4 is lifted by the action portion 4a outside the pressing portion 4c, which is the force point, with the support portion 4b as the fulcrum, and is light by the lever principle The above action can be performed by force.

Further, since the installation surface 6a of the fixed portion 6 is a flat surface, when the knob 1 is pressed, the contact / separation portion 4d of the movable contact piece 4 and the constant contact portion 4e slide smoothly on the installation surface 6a. .

That is, the operation of the knob 1 can be performed softly and the operation feeling can be improved.

[Advantages of the Invention] Since the invention has the above-mentioned configuration and operation, it has an excellent effect that it can provide a sliding switch having a long contact life and a good operation feeling.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a preferred embodiment of the present invention. FIG. 2 is an explanatory view showing the action of the movable contact piece shown in FIG. 1 ... Knob, 2 ... Case, 2a ... Cam groove, 3 ... Pin, 4 ... Movable contact piece, 4a ... Working part, 4b ... Support part, 4c
...... Pressing part, 5 ...... elastic member, 6 ...... fixing part, 7 ...... first fixed contact, 8 ...... second fixed contact, 9 ...... lamp, 10 ...
... Engagement part.

Claims (1)

[Scope of utility model registration request] 1. A sliding switch having a movable contact piece that slides on an installation surface of a fixed part on which a fixed contact is installed and comes into contact with the fixed contact at an ON position, the knob and the slider being moved together with the knob. An operating rod, a spring for automatically returning the knob, the fixed contact, the fixed portion on which the movable contact piece slides and the installation surface is flat, and the movable contact piece in the off position. An engaging portion that lifts up one end side, an operating portion that abuts the engaging portion at one end, a support portion that supports the operating rod at the other end, and a contact portion that is located near the support portion and always abuts the fixed portion. A contact part, a contacting / separating part located near the acting part and contacting / separating from the fixed part, and a pressing part located between the contacting / separating part and the constant contact part and pressed to the fixed contact side by an elastic member. The movable contact piece having, and a first fixed contact that is in contact with the constant contact portion, And a fixed contact composed of a second fixed contact that comes into contact with the contacting / separating portion, and a sliding switch.