JPS63102127A - 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 a switch that is operated by sliding, such as a slide switch or a rotary switch used in the operation panel of an electronic device. Slide switches and rotary switches used in operation panels of electronic devices have been constructed as shown in FIGS. That is, in FIG. 6, there is a contact point 1. A switching plate 3 made of a spring steel plate such as stainless steel is placed on an insulating substrate 2, and a sliding body 6 having a protrusion 4 at the bottom for holding the switching plate 3 is placed on top of the switching plate 3. The operating protrusion 6 is fitted into the window hole 7 of the frame 6 so as to be exposed at the upper part of the frame 6, and the frame e and the insulating substrate 2 are connected to support the sliding body 5.

Further, in FIG. 6, an insulating substrate 9 having contacts 8 is also shown.
A rotary type switching plate 10 is held at the top to be driven by a protrusion 12 provided at the bottom of a sliding body 11, and a shaft 13 of the sliding body 11 passes through a hole 15 provided in a frame 14 and is connected to a knob 16. The sliding body 11 is coupled to the frame 14, and the rotation and sliding of the knob 1e is controlled by the switching plate 10.
It was designed to convey to.

Problems to be Solved by the Invention As mentioned above, in these conventional switches, the sliding body or the operation part and the movable contact part such as the switching plate are integrated and slide directly on the fixed contacts of the insulating substrate. Because of the on-off structure, wear of the fixed contacts has been a major problem. Furthermore, due to the above structure, static electricity easily flashes over from the holes in the frame to the fixed contacts, and the insulation from the outside air is also poor, allowing water droplets, dust, dirt, harmful gases, etc. to enter the contacts, causing the contacts and switching board to It has the disadvantage that it corrodes or hardens the material.

The present invention eliminates the above-mentioned conventional drawbacks, allows the use of opposing contacts with a simple configuration, dramatically improves the service life, allows the use of various contact materials, and allows the use of a variety of contact materials. Water droplets, dust,
The purpose is to eliminate the negative effects of dust, harmful gases, etc.

Means for Solving the Interval Vertex In order to achieve the above object, the present invention allows a sliding body to slide so that a protruding part provided at the lower part of the sliding body can connect with a contact point of a movable contact part provided on an elastic sheet. , and a fixed contact on an opposite insulating substrate are brought into contact to measure continuity.

As a result, the elastic sheet is tightly sandwiched between the frame that holds the sliding body and the insulating substrate, and the contact portion is isolated from the outside.

Example The present invention will be explained in detail below.

As the first embodiment, a slide type switch is shown in Figs. 1 and 2.
The cross-sectional view in Figure 9 is shown in an exploded perspective view. In the same figure, an elastic sheet 21 having a movable part 2o with a movable contact 19 provided at a position facing the fixed contact 17 is placed on an insulating substrate 18 having a fixed contact 17, and an elastic sheet 21 e"i
By arranging the fixed contact 17 and the movable contact 20 to face each other and strongly coupling the insulating substrate 18 to a frame 23 provided with a lip 22 that surrounds the entire switch section, the elastic sheet 21 is insulated by the lip 22. It is pressed against the substrate 18 and seals the fixed contact 17 and the movable contact 20. This frame 23 is provided with a window hole 25 so that the upper part of the sliding body 24 is exposed above the frame 23, and a window hole 25 is provided at a position opposite to the protrusion 26 on the side surface of the sliding body 24 for operating a switch. An uneven portion 27 is provided to generate an appropriate sense of moderation. Further, a bottle 28 is provided at the bottom of the lip 22, and an elastic thin plate 29 placed on the elastic sheet 21 is fixed thereto. A sliding body 24 is disposed between the elastic thin plate 29 and the frame 23, and a protrusion 30 is provided at the bottom of the sliding body 24. With this configuration, the operation is such that the sliding body 24 slides on the thin elastic plate 29, and the protrusion 3o pushes the inclined part 31 at the tip of the thin elastic plate 29 downward, turning on the switch. On the other hand, if this sliding body 24 is slid toward the other side, the switch is turned off by the return force of the movable portion 19 of the thin elastic plate 29 and the elastic sheet 21.

Note that the switch portion in the above configuration may be configured using pressure-sensitive electrodynamic rubber instead of the movable contact portion.

As a second embodiment, a rotary switch will be described with reference to the sectional view and exploded perspective view of FIGS. 3 and 4. In the same figure, an elastic sheet 35 provided with a movable part 34 having a movable contact is placed on an insulating substrate 33 having a fixed contact 32, and an elastic thin plate fixed with a pin 37 provided on a frame 36 is placed on top of the elastic sheet 35. Place 3B. This frame 36 has a hole 41 through which the shaft 4o of the sliding body 39 passes upward, and a recess 42 for housing the sliding body 39 is provided at its lower part, and the sliding body 39 is housed in the recess 42, The sliding body 39 is supported by coupling the knob 43 to the shaft 4o that projects upward. Further, a cylindrical protrusion 44 is provided at the lower part of the sliding body 39.

With this configuration, the operation is performed by rotating the knob 43 to move the protrusion 44 at the lower part of the sliding body 39 to the elastic thin plate 3.
The switch is turned on by moving the movable part 46 of No. 8 to the tip and pushing the movable part 34 provided on the elastic sheet 35 disposed below it downward. Furthermore, sliding body 3
9 in the opposite direction to insert the protrusion 44 into the hole 46 of the elastic thin plate 38.
By moving the movable parts 34 and 35 of the elastic sheet 36 and the elastic thin plate 38 back to their original positions.

Since this embodiment is configured as described above, these contact portions are V-blocked from the outside. Furthermore, since the sliding motion is converted into an up-and-down motion and the contact portion has an on-off structure by the up-and-down motion, it is possible to use a carbon-based material as the carbon contact material.

The thin elastic plate may be supported by being sandwiched between the frame and the elastic sheet, or by being welded and fixed using pins provided on the frame.

Effects of the Invention As described above, according to the present invention, by sandwiching the elastic sheet between the lip provided on the frame and the insulating substrate, the contact portion is isolated from the outside, making it waterproof.

The contact part is highly dust-proof, and the use of vertically operating contacts dramatically improves durability, allowing the use of carbon-based materials, etc., without the need for expensive gold plating on the contact part. It is a practical dog that is low cost, durable, and environmentally resistant.

[Brief explanation of the drawing]

1 and 2 are a cross-sectional view and an exploded perspective view of a first embodiment of the present invention, and FIGS. 3a and 4 are a cross-sectional view and an exploded perspective view of a second embodiment of the present invention. Figure 3 is a plan view of the elastic thin plate used in the second embodiment, Figures 5, 6 & are cross-sectional views of the conventional example, and Figure 6 is a plan view of the switching plate used in the example of Figure 6a. FIG. 17, 32...Fixed contact, 18.33...
...Insulating board, 19.34...Movable part, 2o
......Movable contact, 21.35...Elastic sheet, 24, 39...Sliding body, 26...
...Protrusion, 29, 38... Elastic thin plate, 30.
44... Protruding part, 31... Inclined part, 4
6...Moving part. Name of agent: Patent attorney Toshio Nakao and 1 other person17
---Kaisei Yataka, 18--Regular notice 19--1 moving loss h, 20-11 moving name- 21-11 bullet 7 t-sheet 22-m- sub 23-m- flame? 4--- 1'+ 29--11 explosives 2nd figure 32-11 Identification, 33-11 Zetsuzai 1 anti 34--1 moving part (Go 5--1 bullet ) t33, ;L・-toA11-Frame 37---Pin shout---Disappearance~---Movable lips Fig. 4

Claims (1)

[Claims] An elastic sheet having a movable contact part that moves in the vertical direction is arranged on an insulating substrate having fixed contacts, and a movable part that moves in the vertical direction is provided on the elastic sheet at a position facing the fixed contacts. A switch that moves the movable contact up and down by arranging a thin plate and a sliding body having a protrusion at the bottom, and moving the movable part up and down with the protrusion of the sliding body.