JP2561331Y2 - Cover member for sign illumination type push button switch - Google Patents
Cover member for sign illumination type push button switchInfo
- Publication number
- JP2561331Y2 JP2561331Y2 JP1991039640U JP3964091U JP2561331Y2 JP 2561331 Y2 JP2561331 Y2 JP 2561331Y2 JP 1991039640 U JP1991039640 U JP 1991039640U JP 3964091 U JP3964091 U JP 3964091U JP 2561331 Y2 JP2561331 Y2 JP 2561331Y2
- Authority
- JP
- Japan
- Prior art keywords
- push button
- cover
- movable contact
- white
- shielding film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005286 illumination Methods 0.000 title description 2
- 239000000463 materials Substances 0.000 claims description 11
- 239000000976 inks Substances 0.000 claims description 10
- 239000011347 resins Substances 0.000 claims description 9
- 229920005989 resins Polymers 0.000 claims description 9
- 239000010410 layers Substances 0.000 claims description 8
- 239000001023 inorganic pigments Substances 0.000 claims description 6
- 229910034341 TiO Inorganic materials 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound 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O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc monoxide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- 235000014692 zinc oxide Nutrition 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229920001971 elastomers Polymers 0.000 description 12
- 238000007639 printing Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 5
- 229920001296 polysiloxanes Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Description
[0001]
INVENTION The present invention relates to, easy to sign illuminated cover for a push button switch is recognized symbol that is displayed on the push button part surface
Regarding members .
[0002]
2. Description of the Related Art As shown in FIGS. 2A and 2B, a push button switch is provided with a cover member for a push button switch (hereinafter simply referred to as a cover ).
Pressing push button portion 1 of that bar members) the movable contact 2, FIG.
The switch terminals 4 and 5 are closed by contacting a fixed contact 3 provided on the circuit board, not shown . Cover member used in the conventional character illuminated push button switch, the transparent or translucent rubber-made cover substrate surface of the push button portion 1, letters, numbers, symbols 6 symbols or the like is displayed, push-button unit
A movable contact 2 made of a black conductive material is provided on the back of
Have been. Push button switch incorporating this cover member
The light source 7 projects light 7 from the lower circuit board so that the reference numeral 6 can be clearly identified even in a dark place.
[0003]
However, when the movable contact 2 made of a black conductive agent obtained by dispersing carbon black in transparent rubber is directly attached to the back surface of the push button portion 1, the movable contact 2 has a reference numeral 6 on the surface of the push button portion. The path of the light 7 for irradiating light is blocked, and the identification of the code is partially hindered, which is not preferable in appearance.
In order to solve this drawback, as shown in FIG. 3, a white insulating rubber 8 is preliminarily laminated on one surface of a movable contact 2 made of black conductive rubber, and the movable contact 2 is connected via the rubber. There has been proposed a structure in which light is circulated from the side of the white insulating rubber to just below the sign by joining and integrating with the back surface of the push button portion 1, but the movable contact is formed in two colors.
In the case of forming by the method, insert the movable contact forming tip into the mold
To do this, always push the white insulating rubber 8 side to the push button
Must be oriented in the direction of the back of 1 and movable contact type
There are disadvantages that the chip for forming itself tends to suffer from defects such as sagging, chipping, and the like, and has poor compatibility with deformed contacts, which limits product design.
[0005]
Means for Solving the Problems The present inventors have conducted various studies and as a result, have found that a cover portion for clearly recognizing the outline of a code.
Heading the structure of the wood, there is of the present invention has been completed, this considered
The cover member of the proposal, the sign illuminated pushbutton switch contacting the movable contacts and the fixed contacts to press the upper surface of the push button portion, the back surface of the <br/> push button portion made of a transparent or translucent material to display the code on the surface And a resin of the same material as the cover
Add 20-60% of the weight of resin with white inorganic pigment such as tan, zinc white
Print or transfer in ring shape with added white ink
After a light shielding film formed of a white insulating layer simply print hereinafter) was heated solidified and heated solidified overprinted thereon, light
It is characterized by having a movable contact made of a shielding film and the black conductive layers of the same planform.
[0006]
DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings . 1, the surface of the push button portion 1 is formed by the sign 6 is printing, Li by printing or transferring on the back surface
A light- shielding film 8 in the shape of a ring, a movable contact 9 and a fixed contact 10 in the same plane as this are sequentially formed. The movable contact 9 and press the push button portion 1, et provided on the circuit board side of the shown omit
Although contact switching operation with the fixed contact 10 which is carried out,
Light emitted from the fixed contact side includes the outside of the light shielding film 8.
Light passing through the inside of the eye (inside of the ring) also proceeds toward the code, and the outline of the code is clearly recognized. At this time, the black
The contour of the movable contact 9 is not recognized at all and is preferable in appearance.
It was.
The transparent or translucent cover member may be, for example, any of rubber and plastic elastomer. The light shielding film 8 is made of a resin of the same material as that of the cover member and a white inorganic pigment having high hiding power, such as titanium oxide or zinc white, added in an amount of 20 to 60% by weight of the resin. Inks are preferred. For the white insulating layer, use resin of the same material as the cover member
This is printed with a white inorganic pigment added to it to block light.
By forming a shielding film, the white insulating layer and the cover member
Strongly adhered, resistant to mechanical and thermal shock, peeling, etc.
It became excellent in nature. The thickness of the light shielding film, the resin material of the ink used, the content of the white inorganic pigments include, but is defined by the intensity of light or the like to be projected from the circuit side, less than 5μm
In this case, since the effect cannot be obtained, it is usually preferable that the thickness be 5 μm or more. On the other hand, if it exceeds 20 μm,
Drying process is required, and the solvent evaporates during drying.
This is not preferable because a foaming phenomenon occurs. Therefore, light shielding
The thickness of the shielding film is preferably in the range of 5 to 20 μm. As the movable contact, a black ink in which conductive particles such as carbon black are dispersed in a resin similar to the cover member is appropriate. These inks, conventionally known methods, such as screen printing, Pas <br/> head printing or by attaching a thin rod or ink to the tip of the tube, a method of transferring this, the rear surface of the push button portion 1 in such After printing or transferring , drying and fixing are performed by an appropriate method such as heating, ultraviolet irradiation, and electron beam irradiation. The fixed contact 10
It is formed in the same manner as the cover member of the conventional sign illumination type push button switch.
[0008]
Example: Silicon rubber, KE951U (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was used, and the shape was 10 (W) × 10
(D) A transparent rubber cover base material having 10 push button portions of 5 (H) mm was prepared, and a black silicone-based printing ink / silmark was placed at the center of the surface of each push button portion of the rubber cover base material. Using BLM (brand name), about 20μ thick
m, numbers of “0” to “9” having an outer diameter of about 5 mm were formed by screen printing.
Next, in the center of the back surface of the push button portion of the rubber cover base material , a white silicone-based printing ink "Silmark WM" (trade name, manufactured by the company; 50 parts by weight of titanium oxide mixed with 100 parts by weight of silicone rubber) Is a thin circle with an outer diameter of 5 mm
After printing the ring shape with a stick , it is dried in a dryer at 200 ° C. for 60 minutes to form a ring shape having a thickness of about 20 μm.
A white light shielding film having a shape was obtained.
Next, the conductive ink PRK-3C (trade name, manufactured by Dow Corning Silicone Co., Ltd., trade name) is superimposed on the white light shielding film with a thin round bar having an outer diameter of 5 mm.
After being transferred to the same plane as the light shielding film , it was dried in a dryer at 200 ° C. for 60 minutes to obtain a movable contact having a thickness of about 50 μm. Thus the sign illuminated push button switch manufactured by using the cover member obtained, by projecting light of 470 candelas from the circuit board side, which is formed on the push button portion upper surface "0" to numeral "9" When the discriminating property was tested, the numbers “0” to “9” were well discriminated without being hindered by the movable contact. As a comparative example, the shape of the light shielding film was
Was performed in the same manner as above except that the thickness was 25 μm.
When a cover member was made in the same manner as in the example,
Poor and sharp code contours are not obtained, and
A drying process is required, and the solvent evaporates during drying.
A foaming phenomenon occurs, which is unfavorable in terms of work efficiency and quality
It was.
[0011]
With the code-illuminated cover member according to the present invention, when light is projected from the circuit board side, the code on the surface of the push button portion is well identified. Light shielding consisting of white insulating layer
Since both the film and the movable contact are formed by printing, productivity is improved compared to the conventional method, and not only the defect rate can be reduced, but also the degree of freedom with respect to the position of the light source is increased, and the responsiveness to the product design is improved. The advantage is given . Light shielding
The resin of the same material as the cover member is used for the white insulating layer that is the film.
Printed with white inorganic pigment added to it
The light shielding film and the cover member are formed by forming the shielding film.
Is firmly adhered and resists mechanical and thermal shocks, peeling, etc.
Excellent resistance. Furthermore, the light shielding film and the movable contact
By making it one plane and ring shape
To allow light from below to pass through from inside the ring
And the outline of the code is clearly recognized and looks good.
It became a thing.
FIG. 1 (a) of the code-illuminated cover member of the present invention.
It is a longitudinal cross-sectional view which follows the XX line.
2 (a) is a plan view of a push button portion of a conventional code illuminated cover member, (b), is a longitudinal sectional view taken along line X-X of (a).
FIG. 3 shows a conventional code-illuminated cover member, and FIG.
It is a longitudinal section along the XX line of (a) .
1 .... push button section 7. light 2. movable contact 8. light shielding film 3 ... Fixed contact, 9. movable contact, 4, 5,... Terminal, 10. fixed contact 6. sign.
Claims (1)
On the back of the push button part made of a resin of the same material as the cover member
White inorganic pigments such as titanium oxide and zinc white
Print or roll into a ring shape with white ink with 60% added
A light shielding film formed of a white insulating layer that copy heated solidified, printed or transferred and heated solidified overlaid on this <br/> on, the same as the light shielding film
Code illuminated pushbutton switch cover member; and a movable contact made of a black conductive layer of one plane-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991039640U JP2561331Y2 (en) | 1991-04-30 | 1991-04-30 | Cover member for sign illumination type push button switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991039640U JP2561331Y2 (en) | 1991-04-30 | 1991-04-30 | Cover member for sign illumination type push button switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04124730U JPH04124730U (en) | 1992-11-13 |
| JP2561331Y2 true JP2561331Y2 (en) | 1998-01-28 |
Family
ID=31920887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991039640U Expired - Lifetime JP2561331Y2 (en) | 1991-04-30 | 1991-04-30 | Cover member for sign illumination type push button switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561331Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62130181A (en) * | 1985-12-02 | 1987-06-12 | Nippon Micro Kooteingu Kk | Manufacture of electrification preventing polishing sheet |
| JPH046049B2 (en) * | 1986-04-24 | 1992-02-04 | Fuji Gomme Kk |
-
1991
- 1991-04-30 JP JP1991039640U patent/JP2561331Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04124730U (en) | 1992-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |