JPH0451395Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotary switch, and particularly relates to the shape of a pattern formed on the surface of a substrate.

[Conventional technology]

Figures 2 to 4 show conventional examples. Figure 2 is a plan view of the rotary switch board, Figure 3 A and B are enlarged views of the main parts of the board, and Figure A shows the arm of the slider. It shows a state in which it is in contact with the end of each contact pattern, and (b) in the same figure shows a state in which it has been slightly rotated counterclockwise from (a) in the same figure. FIG. 4 is a sectional view of the switch.

In FIG. 2, 1 is a switch substrate, A is an outer pattern formed on the substrate 1, and the pattern A consists of a contact pattern 2 and a lead-out pattern 3 derived from the pattern 2. Further, the drawer pattern 3 includes a rising portion 3a extending outward perpendicularly to the end of the contact pattern 2, and an arcuate portion 3b extending in the extension direction of the contact pattern 2 from the rising portion 3a.

B is an inner pattern provided opposite the outer pattern A, and this pattern B is the contact pattern 4.
and a drawer pattern 5 derived from the pattern 4.
It consists of Further, the lead-out pattern 5 has a rising portion 5 extending outward perpendicularly to the end of the contact pattern 4.
a, and a circular arc portion 5b extending in the extending direction of the contact pattern 4 from the rising portion 5a.

In FIG. 4, reference numeral 6 denotes a slider receiver rotatably supported by a shaft 7 on the substrate 1, and a slider 8 is fixed to the slider receiver 6. 8a, 8
b, 8c are branch arms provided on the slider 8, and 8a
is in contact with the outer contact pattern 2, the arm 8b is in contact with the inner contact pattern 4, and the arm 8c is in contact with the common contact pattern 9. In FIGS. 3A and 3B, 10 is a resist painted on the inner drawer pattern 5, and in FIG. 3A, the distance t between the end of the resist 10 and the end of the contact pattern 2 is 0.7 mm or more. prescribed to be separated.

[Problems to be solved by the invention] By the way, in the above structure, the rising portion 5a
Since it is obstructed by the contact pattern 2 and cannot be raised high, the circular arc portion 5b approaches the outer periphery of the contact pattern 4 and extends low. Therefore, the slider receiver 6 moves counterclockwise from the state shown in FIG. 3A. When the arm 8a of the slider 8 rotates and escapes from the contact pattern 2 as shown in FIG. 3B, the arm 8b also escapes from the contact pattern 4 at the same time. The arm 8b of the slider 8 moves outward due to the play between the sliders 8 and 8.
There is a case where the pull-out pattern 5b is contacted, and in this case, the connection between the arm 8b and the contact pattern 4, which should normally be OFF, is turned ON, resulting in a malfunction.

The present invention is intended to eliminate the above-mentioned drawbacks of the conventional technology, and the purpose of the present invention is to provide a rotary switch that will not malfunction even if there is slight play between the slider receiver and the shaft. This is what we intend to provide.

[Means for solving problems]

In order to achieve the above object, the present invention provides that the outer pattern comprises a contact pattern and a lead-out pattern, and the lead-out pattern has a rising part extending outward perpendicularly to the end of the contact pattern. and an arcuate portion extending from the rising portion in the extension direction of the contact pattern, the inner pattern consists of a contact pattern and a drawer pattern, and the drawer pattern extends outward perpendicularly to the end of the contact pattern. In a rotary switch comprising an extending rising portion and an arc portion extending from the rising portion in the extending direction of the contact pattern, the inner pattern is arranged to be offset from the outer pattern in the extending direction of the outer contact pattern, and the inner A resist covering the drawer pattern is positioned in a space defined by the arc portion and the rising portion of the outer drawer pattern.

[Effect]

According to the embodiment of the present invention, since the end of the inner contact pattern is located in the space defined by the rising part and the circular arc part of the outer drawer pattern, this space can be used to draw out the inner drawer. The arc part of the pattern can be completely covered with resist, so even if the slider moves outward due to play between the slider receiver and the shaft, it will still contact the inner contact pattern. The arm of the slider cannot accidentally touch the drawer pattern and therefore the inner contact pattern
This can prevent malfunctions such as accidentally turning on after turning off.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figures 1A and 1B are enlarged views of the main parts of the board on which the present invention has been implemented. Figure 1A shows the arm of the slider in contact with the end of each contact pattern, and Figure 1B shows the same state. This shows the state slightly rotated counterclockwise from the state shown in Figure A.

Note that the same parts as in the conventional example shown in FIGS. 2 to 4 are given the same reference numerals, and redundant explanations will be omitted.

The difference between the present invention and the conventional example is that the inner pattern B is replaced with the outer pattern A as shown in FIG.
Slightly shifted counterclockwise, the contact pattern 4 of the inner contact pattern B is extended to the space C defined by the rising part 3a and the circular arc part 3b of the drawer pattern 3 of the outer pattern A, and the inner pattern Rising part 5a and arc part 5 of drawer pattern 5 of B
A resist 10 covering portions b is positioned within the section C. The length of the arm 8b of the slider 8 is increased by the length of the contact pattern 4.

By adopting the above-described configuration of the embodiment of the present invention, the arms 8a of the slider 8, as shown in FIG.
When the arm 8a of the slider 8 escapes from the contact pattern 2 as shown in FIG. The arm 8b also escapes from the contact pattern 4 at the same time, but in this case, even if the slider receiver 8 is shifted outward due to the play between the slider receiver 6 and the shaft 7, the arm of the slider 8 8b contacts the resist 10;
Since the arm 8b of the slider 8 does not come into direct contact with the arcuate portion 5b of the pull-out pattern 5, after the arm 8b of the slider 8 separates from the contact pattern 4 and turns OFF, the arm 8b is pulled out due to the backlash of the slider 6. It is possible to prevent a malfunction in which the arc portion 5b of pattern 5 is turned on.

[Effect of idea]

According to the present invention, the inner pattern is shifted counterclockwise from the outer pattern so that the end of the inner contact pattern is located in the space defined by the rising part and the arc part of the outer drawer pattern. Therefore, by using this space, the arcuate part of the inner drawer pattern can be completely covered with resist, and therefore, even if the slider is shifted outward due to the play between the slider receiver and the shaft, In this case, the arm of the slider that contacts the inner contact pattern will not accidentally contact the drawer pattern after exiting the contact pattern, and therefore, the slider arm that contacts the inner contact pattern will not accidentally contact the drawer pattern, and therefore the inner contact pattern will not turn ON by mistake after it has been turned OFF.
This can prevent malfunctions such as.

[Brief explanation of the drawing]

Figures 1A and 1B are enlarged views of the main parts of the board on which the present invention has been implemented. Figure 1A shows the arm of the slider in contact with the end of each contact pattern, and Figure 1B shows the same state. This shows the state slightly rotated counterclockwise from the state shown in Figure A. Figures 2 to 4 show conventional examples. Figure 2 is a plan view of the rotary switch board, Figure 3 A and B are enlarged views of the main parts of the board, and Figure A shows the arm of the slider. It shows a state in which it is in contact with the end of each contact pattern, and (b) in the same figure shows a state in which it has been slightly rotated counterclockwise from (a) in the same figure. FIG. 4 is a sectional view of the switch. 1... Switch board, A... Outer pattern,
2...Contact pattern, 3...Drawer pattern, 3
a... Rising part, 3b... Arc part, B... Inner pattern, 4... Contact pattern, 5... Drawer pattern, 5a... Rising part, 5b... Arc part, 6
...Slider receiver, 7...Shaft, 8...Slider, 8
a, 8b, 8c...branched arms.

Claims (1)

[Scope of utility model registration request] The outer pattern consists of a contact pattern and a drawer pattern, and the drawer pattern consists of a rising part rising from the end of the contact pattern and an arcuate part extending from the rising part in the extending direction of the contact pattern. In a rotary switch consisting of a contact pattern and a pull-out pattern, and the pull-out pattern includes a rising part rising from an end of the contact pattern and an arcuate part extending from the rising part in the extending direction of the contact pattern, the inner pattern is arranged to be shifted from the outer pattern in the extension direction of the outer contact pattern, and the resist covering the inner drawer pattern is positioned in the space defined by the arc portion and the rising portion of the outer drawer pattern. Features rotary switch.