JPH03134921A - Switch mechanism - Google Patents

Abstract

PURPOSE:To obtain a switch mechanism assembled easily and having a moving section with a stable action by connecting or disconnecting a contact section via a contact connection section based on the suction/repulsion movement of the second magnet against the first magnet provided on an operating section. CONSTITUTION:When an operating section 8 is thrust against the exciting force of a coil spring 15, a moving section 20 is excited downward by the repulsion between the first magnet 10 and the second magnet 21 in the initial thrust position. When the magnet 10 is lowered to the position slightly lower than the magnet 21, the moving section 20 is sprung up by the repulsive movement of the magnet 21, thereby a horizontal connection section 22a is hooked on both horizontal sections 25 from below. The connected state is obtained by both horizontal connection sections 22a as a result, and a switch signal is outputted from a vertical section 24. The positional relation that the magnet 10 is lowered to the position slightly lower than the magnet 21 is obtained by setting the size (a) on the moving section 20 larger than the size (b) on the operating section 9.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a switch mechanism such as a push button switch.

(Prior art) In a normal push button switch, an actuating body is actuated by pushing the operating part, and in conjunction with this actuating body, a conductive movable piece made of a leaf spring is reversely displaced to open and close the contact. The structure is as follows.

(Problem to be Solved by the Invention) However, in the case of a push button switch having such a configuration, it is very time-consuming to attach the movable piece made of a small leaf spring to a predetermined shape during assembly, and furthermore,
There is a basic problem that if the spring force of the movable piece varies or if the spring force changes due to long-term use, the contacts will not open and close properly.

The present invention was made in view of the above problems, and an object of the present invention is to provide a switch mechanism in which a movable part made of a leaf spring is not used and the movable part is stably operated using a magnet. do.

(Means for Solving the Problems) In order to achieve such an object, the present invention includes a switch mechanism including an operating section and an operating section that is interlocked with the operating section and is provided with a first magnet. , a second magnet is provided that attracts/repulses when the first magnet approaches, and a movable part in which a contact connection part is integrally provided, and the actuating part and the movable part approach/separate from each other. a movable guide body disposed near the movable guide body, the actuating part being close to the movable part, and the movable part being caused by attraction/repulsion movement of the second magnet; and a pair of contact portions that are connected/separated by the contact connecting portion when approaching/separating from the actuating portion.

(Function) According to the above configuration, when the actuating part is actuated by the operation of the operating part and the first magnet approaches the second magnet of the movable part, the second magnet moves with attraction/repulsion. The movable part approaches/removes from the actuating part, thereby connecting/separating the contact part by means of the contact connecting part integral with the actuating part.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of a switch mechanism configured as a push button switch, and FIG. 2 is a horizontal sectional view.

In these figures, reference numeral 1 denotes a base body, and the base body 1 is composed of a base portion 2 and a pair of rising portions 3 that are erected from both sides of the base portion 2 so as to face each other. On the inner surface of the rising portion 3, two pairs of grooves 4 serving as movement guides are vertically provided at opposing positions.

Reference numeral 7 denotes a push button, which is constructed by continuously and integrally providing an upper operating section 8 and a lower operating section 9.
A first magnet 10 is attached to the lower part of the inner surface. Convex stripes II are attached to both sides of the actuating portion 9,
Each of the protrusions 11 is fitted into the groove 4, and the push button 7 is provided between the rising portions 3 so as to be movable up and down.

Reference numeral 15 denotes a coil spring, which is fitted into a coil mounting hole I7 formed in a boss 16 projecting from the base portion 2, so that the push button 7 is always urged upward.

Reference numeral 20 denotes a movable part, and a second magnet 21 is attached to the inner surface of the movable part 20, and a T-shaped metal connection piece 22 is provided protruding from the lower part of the movable part 20. Movable part 2
0 is provided with protrusions 29 on both sides, and these protrusions 2
9 are respectively fitted into the grooves 4 on the other side, and the movable part 20 is provided between the rising parts 3 so as to be movable up and down.

The first and second magnets 10.21 are mounted such that the same poles are located on opposing surfaces so that they repel each other when they approach each other. 8 in the above movable part 20
The dimensions are designed to be larger than the five dimensions in the actuating section 9.

Each of 23 is a contact terminal member, which is L-shaped and has a vertical portion 2.
4 and a horizontal part 25, the vertical part 24 is provided so as to protrude downward from both end positions of the base part 2, and the horizontal part 25
is positioned floating on the two surfaces of the base portion at a predetermined distance from the two surfaces of the base portion. Each of the horizontal portions 25 is connected to the horizontal connecting portion 22a at a predetermined interval.
5, the movable part 20 is located in a direction orthogonal to the horizontal parts 25, and the movable part 20 is normally provided with its lower surface placed on each horizontal part 25.

The switch mechanism is constructed as described above, and is actually completed by attaching the outer casing 30.

Next, the operation will be explained.

FIG. 1 shows a state in which the operating part 8 is not pushed in. In this state, the push button 7 is urged upward by the coil spring 15, and the movable part 3 is placed on the horizontal part 25 of the contact terminal member 23. The situation is as follows. Each of the horizontal portions 25 is not connected to the horizontal connection portion 22a but is separated from the horizontal connection portion 22a.

Next, when the operating part 8 is pushed in against the biasing force of the coil spring 15, the first magnet 10 is pushed in at the initial pushed-in position.
The movable part 20 is urged downward by the repulsion between the second magnet 21 and the second magnet 21, but when the first magnet 10 descends to a position slightly lower than the second magnet 2I, as shown in FIG. Second
Due to the repulsive movement of the magnet 21, the movable part 20 springs up, whereby the horizontal connecting part 22a is locked to the rain horizontal part 25 from below. As a result, the rain horizontal portion 25 is connected to the horizontal connection portion 22.
The vertical section 24 outputs a switch signal in a state where it is connected by a. The positional relationship in which the first magnet 10 is lowered to a slightly lower position than the second magnet 21 is as follows:
This is obtained by making the three dimensions IJ of the movable part 20 larger than the five dimensions of the actuating part 9.

When the push-in of the operating section 8 is released and the operating section 9 rises,
At a position where the first magnet 10 is above the second magnet 21, the movable part 20 descends due to the repulsive force of each of the magnets 10 and 21 and the weight of the movable part 20, thereby causing the horizontal connection part 22a to descend. The connection of the rain horizontal portion 25 is then released.

In the above embodiment, the contact portions are separated by the repulsive force of each magnet, but bow-sucking force may be used, or the contact portions may be connected.

Furthermore, in the above embodiment, a push button switch with the simplest configuration as a switch mechanism was shown, but when the first push is made, the actuating part is held in the push position and the switch output is maintained, and when the second push is made, the switch output is maintained. It is also possible to configure it as an alternate type push button switch or the like in which the switch output is stopped when the holding of the actuating part is released.

(Effects of the Invention) Therefore, according to the present invention, the contact connecting portion is activated based on the movement of the movable portion accompanying the attraction/repulsion movement of the second magnet with respect to the first magnet provided in the actuating portion. Since the contact portions are connected/separated from each other in this way, a switch mechanism can be obtained that is easy to assemble and allows the movable portion to operate stably without using a movable piece as in the prior art.

[Brief explanation of the drawing]

1 to 3 relate to embodiments of the present invention, in which FIG. 1 is a longitudinal cross-sectional view of a switch mechanism configured as a push button switch, FIG. 2 is a cross-sectional view of the same, and FIG. FIG. 6 is a vertical cross-sectional view in different states. 4... Concave strip (movement guide body), 8... Operating section, 9... Operating section, 10... First magnet, 20... Movable section, 21... Second magnet , 22a...Horizontal connection part (contact connection part), 25...Horizontal part (contact part). one

Claims (1)

[Claims] (1) an operating section; an operating section that is interlocked with the operating section and is provided with a first magnet; and a second magnet that attracts/repulses when the first magnet approaches.
a movable part that is provided with a magnet and is integrally provided with a contact connection part; a movable guide that allows the actuating part and the movable part to move toward and away from each other; and the movable guide. arranged nearby, and connected by the contact connection portion when the actuating portion approaches the movable portion and the movable portion approaches/leaves the actuating portion due to attraction/repulsion movement of the second magnet. A switch mechanism comprising: a pair of contact portions separated from each other;