JPH01253132A - Switch - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to switches used in various electronic devices.

Conventional technology The conventional technique will be explained with reference to the cross-sectional view of FIG.

According to the figure, 1 is an insulating case formed by planting a common terminal 2 and individual terminals 3, and 4 is placed on this common terminal 2 and individual terminals 3, and the individual terminals are connected with this common terminal 2 as a fulcrum. This is a switching board that performs a seesaw movement to connect and separate the common terminal 3 and the common terminal 2. A pin 6 is housed in the sliding body 7 via a spring 6 and presses the switching plate 4. Reference numeral 8 denotes a frame that covers the opening of the insulating case 71, and reference numeral 9 denotes a frame that is secured to the frame 8 at one end and the sliding member 7 by engaging the other end to the sliding member 7. Spring 1o will be described later.
It is a lock pin that locks against the

Reference numeral 11 denotes a spring 1 installed between the sliding body 7 and the insulating case 71 in order to press the sliding body 7 against one side of the insulating case 1.
A spring stopper plate is attached to the sliding body 7 to prevent the number 0 from being removed. To explain the operation of the above-mentioned switch, when the sliding body 7 is pushed against the spring 10, the pin 6 slides on the switching plate 4 as the sliding body 7 moves, and the switching plate 4
performs seesaw motion with the common terminal 2 as a fulcrum, and the switching plate 4
is brought into contact with the individual terminal 3, and the connection between the common terminal 2 and the individual terminal 3 is turned on. At this time, even if you stop pushing the sliding body 7, the lock pin 9 will keep the spring 1
Locked against zero.

When the sliding body 7 is pushed again, the lock is released and the sliding body 7 is moved by the spring 10.

The switching plate 4 leaves the individual terminal 3 and the common terminal 2
and the individual terminals 3 are in an OFF state.

Problems to be Solved by the Invention In the conventional switch described above, the switching plate 4 only performs a simple seesaw movement, so even if contact welding occurs between the common terminal 2 and the individual terminals 3 due to large current, The strength to peel off this welded contact is weak, and there is a possibility of quality problems such as poor contact due to oxidation of the contact or adhesion of foreign matter.

Means for Solving the Problems In order to solve the above problems, the present invention provides an individual terminal attached to an insulating case and one end placed on the common terminal, which is in contact with the common terminal, and the other end is placed on the individual terminal. and a U-shaped spring that engages the switching plate that connects and separates.

- A switch is constituted by a sliding body provided with a projection on the lower part that slides on the switch plate described in F.

action As described above, the switching plate moves as the sliding body slides.

Since the switch contacts and separates while slidingly contacting the individual terminals, it is possible to provide a switch with stable quality that prevents poor contact due to its self-cleaning action.

Embodiment The present invention will be explained with reference to FIGS. 1 to 3, which are one embodiment. FIG. 1 is a sectional view, and FIG. 2 is an exploded perspective view.

FIG. 3 is an operational diagram illustrating the self-cleaning effect.

12 is an individual terminal 14 having a fixed contact 13 and a common terminal 1
6 is an insulating case, and 16 is placed on this common terminal 16, with one end in contact with the common terminal 15, and the other end in contact with the dogleg-shaped portions provided on both sides of the switching plate 170. A movable contact 19 is provided at one end of the switching plate 17 so as to come into contact with and separate from the fixed contact 13 of the individual terminal 14, using a U-shaped spring that is engaged with the switching plate 17. Reference numeral 20 denotes a sliding body that is slidably attached to the insulating coos 12 and has a protrusion 21 that comes into sliding contact with the back surface of the switching plate 17. A spring 23 is attached to the hollow portion 22 of the sliding body 20 to press the sliding body 20 against one of the inner walls of the insulating case 12.

Reference numeral 24 denotes a pin having one end engaged with the insulating case 712 and the other end engaged with the sliding body 20;
is a frame that covers the opening of the insulating case 12 so as to cover the sliding body 20.

To explain the operation below, Fig. 3a shows the switch O
FIG. 3 shows the FF state, and FIG. 3 shows the switch ON state, and FIG. 3 C shows the sliding body 20 moved further from the position shown in FIG.
7 is slightly moved from the position shown in Fig. 3, and Fig. 3 d is a comparative explanation of the moving state of the switching plate 17 in Figs. The broken line is an explanatory diagram showing the state shown in FIG. 3C.

When the protrusion 21 of the sliding body 20 is on the right side of a point A at the engagement part between the U-shaped spring 16 and the switching plate 17, as shown in FIG. A force acts on the switching plate 17, the movable contact 19 and the fixed contact 13 are separated, and the switch is in the OFF state.

When the sliding body 2o is pushed and the protrusion 21 moves to the left side from the engaging part A point as shown in FIG. The movable contact 19 and the fixed contact 13 come into contact with each other, and the switch is turned on. When the sliding body 2o is further pushed as shown in Figure 3C, the protrusion 21 moves further to the left, but as compared to Figure 3D, the retaining part A moves to the upper right as shown by the broken line. do. At this time, the movable contact 19 of the switching plate 17 slides on the fixed contact 13 at a distance S, so that the movable contact 19
9 and the fixed contact 13 are removed,
A so-called self-cleaning effect will be exhibited.

4 and 6 show another embodiment, FIG. 4 is an exploded perspective view, and FIG. 6 is an operational diagram for explaining the self-cleaning effect.

The structure and operation will be explained below, and the same parts as in FIGS. 1 to 3 are given the same numbers.

Although the explanation will be omitted, the only difference is that the switching plate 17 is provided with an inclined portion 26 by cutting and raising. This inclined portion 26
As shown in FIGS. 6a-d, when the projection 21 of the sliding body 20 moves from the position shown in FIG. A force acts to rotate clockwise, and the retention point A moves to the lower left as shown by the broken line. At this time, the movable contact 19 of the switching plate 17 comes into sliding contact with the fixed contact 13 at a distance S', so that a self-cleaning effect is exerted between the movable contact 19 and the fixed contact.

FIG. 6 shows another embodiment in which the contact between the U-shaped spring 16 and the common terminal 2 is changed from pressure contact as shown in FIGS. It is designed to engage with.

Effects of the Invention The present invention is mounted on one or more individual terminals and a common terminal attached to an insulating case. Consisting of a U-shaped spring whose one end abuts the common terminal and whose other end engages with a switching plate that comes into contact with and separates from the individual terminals, and a sliding body with a protrusion at the bottom that slides on the switching plate. Therefore, when the switching plate and the individual terminals are disconnected, the movable contacts of the switching plate slide on the fixed contacts of the individual terminals, resulting in a self-cleaning effect, so that a highly reliable switch can be provided.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a switch according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of the same, Fig. 3 is an operation diagram explaining the self-cleaning effect, Fig. 4 is an exploded perspective view of a switch according to another embodiment of the present invention, and Fig. 6 is an illustration of the self-cleaning effect. FIG. 6 is a sectional view of a switch according to another embodiment of the present invention, and FIG. 7 is a sectional view of a conventional switch. 12...Insulation case, 14...Individual terminal, 16...Common terminal, 16...U-shaped spring, 17...Switching plate, 20 ...Sliding body,
21... Protrusion. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
25 frames 24D-y7t". , \, /, 5 joints] shoulder length, ゛/7 elutriation/4 knots,: muscle 2nd figure 3rd figure 5th

Claims (1)

[Claims] an insulating case to which a common terminal and individual terminals are attached; a U-shaped spring having one end in contact with the common terminal and a switching plate that engages with the other end to connect to and separate from the individual terminal; and the switching plate. is caused to seesaw movement about the engagement point of the switching plate and the U-shaped spring as a fulcrum, and when the individual terminal and the switching plate are in contact with each other, the switching plate slides over the individual terminal. A switch consisting of a sliding body with a protrusion that slides into contact with the back of the switching plate.