JPH06105574B2 - Rubber cover member for illuminated push button switch and method for manufacturing the same - Google Patents
Rubber cover member for illuminated push button switch and method for manufacturing the sameInfo
- Publication number
- JPH06105574B2 JPH06105574B2 JP62037335A JP3733587A JPH06105574B2 JP H06105574 B2 JPH06105574 B2 JP H06105574B2 JP 62037335 A JP62037335 A JP 62037335A JP 3733587 A JP3733587 A JP 3733587A JP H06105574 B2 JPH06105574 B2 JP H06105574B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- convex portion
- cover member
- masking pattern
- base material
- 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
- 229920001971 elastomer Polymers 0.000 title claims description 27
- 239000005060 rubber Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims description 40
- 230000000873 masking effect Effects 0.000 claims description 27
- 239000003973 paint Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 description 6
- 229920002379 silicone rubber Polymers 0.000 description 4
- 239000004945 silicone rubber Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
Landscapes
- Manufacture Of Switches (AREA)
- Push-Button Switches (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は照光式押しボタンスイッチ用ゴム製カバー部材
およびその製造方法、とくにはキートップ部に透光部を
備えた照光式押しボタンスイッチ、例えば車載用電話
機、車載用の各種押しボタンスイッチ、または暗所用押
しボタンスイッチなどに用いられる、ゴム製カバー部材
およびその製造方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a rubber cover member for an illuminated push button switch and a method for manufacturing the same, and more particularly, an illuminated push button switch having a translucent portion on a key top portion, For example, the present invention relates to a rubber cover member used for an in-vehicle telephone, various in-vehicle push button switches, dark place push button switches, and the like, and a manufacturing method thereof.
（従来技術とその問題点） 近年、不透光性のゴム材料からなる多数のキートップ部
を一体に連設したものが、押しボタンスイッチのカバー
部材として多用されており、これは操作性にすぐれてい
ること、多数のキー部を同時に一体成形できることなど
から、各種産業用機器の入力部に広く利用されている。(Prior art and its problems) In recent years, a large number of key tops made of a non-translucent rubber material that are integrally connected in series have been widely used as a cover member for a push button switch. It is widely used in the input part of various industrial equipment because it is excellent and can mold a large number of key parts simultaneously.
この押しボタンスイッチは、押しボタンが確実に押され
たかどうかを確認するために、また暗い場所での操作性
をあげるために、遮光性のカバー部材の一部に透明また
は半透明の透光部を窓状に設けるとともに、その背面に
光源を置いて照光する方式のものが最近増加してきてい
る。This push button switch has a transparent or semi-transparent translucent part on a part of the light-shielding cover member in order to confirm whether the push button has been pressed firmly and to improve operability in a dark place. In recent years, the number of systems in which a window is provided and a light source is placed behind the window to illuminate is increasing.
この方式が適用されるカバー部材の製造は、通常着色さ
れたゴム部分と透明なゴム部分とを別の金型で成形し、
これらを所定の部位で互いに接着する方法、あるいは着
色されたゴム部分と透明ゴム部分とのいずれか一方を金
型中で成形硬化した後、残りの部分のゴムを仕込んで一
体成形する方法で行なわれている。前者の方法は２種類
の金型を必要とするほか、その接着工程の歩留りが悪
く、外観も見苦しいものになるという不利があり、後者
については二度の成形工程が必要で、金型も複雑なもの
になるという欠点があり、さらに、このいずれの方法で
も比較的小さな細かい形状の透光部を形成することが難
しいという不利がある。To manufacture the cover member to which this method is applied, normally, the colored rubber part and the transparent rubber part are molded by different molds,
These are adhered to each other at a predetermined part, or one of the colored rubber part and the transparent rubber part is molded and cured in a mold, and then the remaining part of the rubber is charged and integrally molded. Has been. The former method requires two types of molds, and has the disadvantage that the yield of the bonding process is poor and the appearance is unsightly. The latter method requires two molding processes and the molds are complicated. However, there is a disadvantage that it is difficult to form a relatively small and fine translucent portion by any of these methods.
（問題点を解決するための手段） 本発明は、このような不利欠点を解決した照光式の押し
ボタンスイッチ用ゴム製カバー部材（以下、単にカバー
部材とする）、およびその製造方法を提供するもので、
このカバー部材はそれぞれの表面に文字、符号または図
形の形をした凸部を有する多数のキートップ部が一体に
連設され、全体が透明または半透明のゴム材料からなる
カバー基材の、凸部の上面を除く外表面に遮光層を設け
てなるものであり、その製造方法はそれぞれの表面に文
字、符号または図形の形をした凸部を有する多数のキー
トップ部が一体に連設されているカバー基材を、透明ま
たは半透明のゴム材料を用いて金型中で加熱形成し、前
記凸部の上面に、カバー基材と接着しない塗料を塗布し
てマスキングパターンを形成し、このマスキングパター
ンの上面を含むカバー基材の外表面全体に、これと接着
する遮光性の着色塗料を塗布して遮光層を形成し、つい
でマスキングパターンをこれを被覆する部分の遮光層と
共に取り除いて凸部の上面のみを透光性にするか、好ま
しくはこの製造方法において、上記凸部の上面へのマス
キングパターンの形成前、または凸部の上面からのマス
キングパターンの除去後に、凸部の上面に、ゴム製カバ
ー基材と接着する透明または光が透過する程度に薄く着
色した塗料を塗布示して透光層を形成するものである。(Means for Solving Problems) The present invention provides a rubber cover member for an illuminated push button switch (hereinafter, simply referred to as a cover member) and a method for manufacturing the same, which solves such disadvantages. Things
This cover member has a large number of key tops each having a convex portion in the shape of a letter, code, or graphic on each surface, and is integrally connected to form a convex portion of a cover base material made of a transparent or translucent rubber material. A light-shielding layer is provided on the outer surface excluding the upper surface of the part, and the manufacturing method is such that a large number of key top parts each having a convex portion in the shape of a letter, code or figure are continuously connected to each surface. The cover base material is heated and formed in a mold using a transparent or translucent rubber material, and a masking pattern is formed by applying a paint that does not adhere to the cover base material on the upper surface of the convex portion. A light-shielding colored paint that adheres to this is applied to the entire outer surface of the cover substrate, including the upper surface of the masking pattern, to form a light-shielding layer, and then the masking pattern is removed together with the light-shielding layer in the portion covering it to form a convex pattern. Or only in the upper surface of the transparent, preferably in this manufacturing method, before forming a masking pattern on the upper surface of the convex portion, or after removing the masking pattern from the upper surface of the convex portion, on the upper surface of the convex portion, The transparent layer that is adhered to the rubber cover base material or that is lightly colored to allow the transmission of light is applied to form the transparent layer.
すなわち、本発明者らは透光部を有するカバー部材の安
価な工業的製造方法について種々検討の結果、それぞれ
の表面に文字、符号または図形の形をした凸部を有する
多数のキートップ部が一体に連設されているカバー基材
を、透明または半透明のゴム材料を用いて、金型中での
加熱加圧という常法によって形成した後、まずその凸部
上面にこのカバー基材を構成しているゴムと接着しない
塗料で所定のマスキングパターンを形成した後、これを
被覆するようにその上方よりカバー基材の外表面にこれ
と接着する遮光性の着色塗料を塗布すると、マスキング
パターン部分を除いたカバー基材の外表面で接着してい
る遮光層が形成されるので、次にこのキートップ部のマ
スキングパターンをこの部分を被覆している遮光層とと
もに除いてやれば、ここが透光性になることを見出した
もので、したがってこの方法によれば、容易にかつ安価
に目的とする透光部を備えたカバー部材が得られること
を確認して本発明を完成させた。That is, as a result of various studies on the inexpensive industrial manufacturing method of the cover member having the translucent portion, the present inventors found that a large number of key top portions having a convex portion in the shape of a character, code or graphic on each surface After forming the cover base material that is integrally connected using a transparent or semi-transparent rubber material by the usual method of heating and pressing in a mold, first, the cover base material is placed on the upper surface of the convex portion. After forming a predetermined masking pattern with a paint that does not adhere to the constituent rubber, apply a light-shielding colored paint that adheres to the outer surface of the cover base material from above to cover the masking pattern. A light-shielding layer adhered on the outer surface of the cover base material excluding the part is formed, so if the masking pattern of this key top part is removed next together with the light-shielding layer covering this part. The present invention has been completed by confirming that a cover member having a desired light-transmitting portion can be easily and inexpensively obtained by this method. It was
以下、本発明に係わるカバー部材について、その一単位
を縦断面図として示した図に基づいて説明する。Hereinafter, the cover member according to the present invention will be described with reference to the drawings in which one unit is shown as a vertical sectional view.
第１図はその一例を示すもので、この本体を構成するゴ
ム製カバー部材（以下、単にカバー基材とする）１は、
筒状のキートップ部２、その底部に連設された、内部に
ドーム状の空所を有する台状支持部３、この底部周縁部
より外方に延出し隣接する同形の単位の脚部（図示せ
ず）に連なる脚部４、およびキートップ部２の上面に設
けられた文字、符号または図形の形をした凸部５からな
る、全体が透明または半透明のゴム材料で形成されてい
て、キートップ部２の底面に設けられた接点部６と共に
一体の構造物となっている。FIG. 1 shows an example thereof, and a rubber cover member (hereinafter, simply referred to as a cover base material) 1 constituting the main body is
A cylindrical key top portion 2, a base-like support portion 3 continuously provided on the bottom portion thereof and having a dome-shaped space therein, leg portions of the same unit extending outward from the peripheral portion of the bottom portion and adjacent to each other ( (Not shown), and a convex portion 5 formed in the shape of a character, a code or a graphic provided on the upper surface of the key top portion 2, and is entirely formed of a transparent or translucent rubber material. , And the contact portion 6 provided on the bottom surface of the key top portion 2 is an integral structure.
一方、このカバー基材１の外表面には、凸部５の上面を
除き、キートップ部２、台状支持部３、脚部４の各部を
被覆してこれと接着する着色塗料による遮光層７が設け
られていて、凸部５の上面だけが透光部８として保持さ
れている。On the other hand, on the outer surface of the cover base material 1, except for the upper surface of the convex portion 5, the light shielding layer made of a colored coating material that covers and adheres to the key top portion 2, the trapezoidal support portion 3, and the leg portion 4 7 is provided, and only the upper surface of the convex portion 5 is held as the light transmitting portion 8.
前述したように、本発明によるカバー部材の本体を構成
するカバー基材１は、透明または半透明のゴム材料であ
ればいかなるものでもよく、したがってこれには天然ゴ
ムまたはポリブタジエン、ポリイソプレン、SBR、ネオ
プレンなどのジエン系合成ゴム、エチレン−プロピレン
系、ウレタン系、シリコーン系などの合成ゴムあるいは
これらの組合せから作られたものなどが例示されるが、
これらの内では透明性がよく、耐熱性、耐候性、電気絶
縁性にもすぐれているシリコーン系ゴムとするのがよ
い。As mentioned above, the cover base material 1 constituting the main body of the cover member according to the present invention may be any transparent or translucent rubber material, and therefore may be natural rubber or polybutadiene, polyisoprene, SBR, Examples include diene-based synthetic rubbers such as neoprene, ethylene-propylene-based, urethane-based, and silicone-based synthetic rubbers, or combinations thereof.
Among these, it is preferable to use a silicone-based rubber that is excellent in transparency, heat resistance, weather resistance, and electric insulation.
また、このカバー基材は接点部とともに全体を絶縁性と
したもの、全体を導電性としたもののいずれであっても
よいが、通常は接点部を導電性としその他の部分を絶縁
性としたものが採用される。なお、これらは圧縮成形、
射出成形、トランスファー成形などの公知の方法によ
り、隣接する多数の同形の単位とともに一体に成形する
ことができ、また必要に応じてこれを同時に多数個取り
して作ることもできる。Further, the cover base material may be either one in which the whole is insulative together with the contact portion, or one in which the whole is electrically conductive, but normally, the contact portion is electrically conductive and the other portions are insulative. Is adopted. In addition, these are compression molding,
By a known method such as injection molding or transfer molding, it can be integrally molded with a large number of adjoining units having the same shape, or, if necessary, a large number of them can be simultaneously produced.
次に、本発明に係わるカバー部材の製造を、第１図に示
したカバー部材の製造過程を示す第２図に基づいて説明
する。図に示すように、まず上記の従来公知の方法で作
られたカバー基材１のキートップ部の上面のみに、この
カバー基材とは接着性を持たない剥離可能な塗料を塗布
することにより、所定の形状のマスキングパターン９を
形成する。ここで用いられる塗料は、カバー基材がシリ
コーン系ゴムからなるときはポリエステル系樹脂、エポ
キシ系樹脂などによるものが、またこれがウレタン系ゴ
ム、エチレン−プロピレン系ゴムからなるときはシリコ
ーン系樹脂というように、カバー基材の材料の種類に応
じて剥離可能な塗料の中から任意に選択することができ
る。この塗布は、スクリーン印刷などで厚さが５μｍ以
上になるように行なえばよい。Next, the manufacturing of the cover member according to the present invention will be described with reference to FIG. 2 showing the manufacturing process of the cover member shown in FIG. As shown in the figure, first, a releasable paint having no adhesiveness with the cover base material 1 is applied only to the upper surface of the key top portion of the cover base material 1 produced by the above-mentioned conventionally known method. , A masking pattern 9 having a predetermined shape is formed. The paint used here is made of polyester resin, epoxy resin, etc. when the cover base material is made of silicone rubber, and is called silicone resin when it is made of urethane rubber or ethylene-propylene rubber. In addition, it can be arbitrarily selected from the paints that can be peeled off according to the kind of the material of the cover base material. This application may be performed by screen printing or the like so that the thickness is 5 μm or more.
つぎに、マスキングパターンを形成したカバー基材１
は、その外表面に、マスキングパターン９を被覆するよ
うに、その上方より基材１と接着する遮光性の着色塗料
を塗布し、必要に応じ加熱してこれを硬化させると、マ
スキングパターンの部分を除いたカバー基材の外表面で
強固に接着している遮光層７が形成される。Next, the cover substrate 1 on which a masking pattern is formed
Is coated with a light-shielding colored paint that adheres to the base material 1 from above so as to cover the masking pattern 9 on its outer surface, and heats it as necessary to cure it. The light-shielding layer 7 that is firmly adhered to the outer surface of the cover base material except for is formed.
ここに使用される塗料は、このカバー基材がシリコーン
系ゴムからなる場合にはシリコーン系のものとすること
がよく、これにシリコーン系以外の他の種類のものを使
用するときはあらかじめシリコーン系のシーラント、プ
ライマーを塗布しておくことがよく、これには例えば特
開昭58−8642号公報の「シリコーン系成形体」に示され
る方法などを採用すればよい。なおこの塗料塗布部分は
照光部と明瞭に区別するため遮光性の強いものとするこ
とが望ましく、したがってこの塗料には通常黒色、灰色
などの着色剤を混入したものが用いられ、その塗膜の厚
さは遮光性の程度に応じて５〜15μｍ程度のものとすれ
ばよい。The paint used here is preferably of silicone type when the cover base material is made of silicone rubber, and when other types other than silicone type are used, the silicone type is used in advance. It is preferable to apply the above-mentioned sealant and primer. For this, for example, the method shown in "Silicone-based molding" of JP-A-58-8642 can be adopted. In addition, it is desirable that the paint application part has a strong light-shielding property so as to be clearly distinguished from the illuminated part. Therefore, this paint is usually mixed with a coloring agent such as black or gray. The thickness may be about 5 to 15 μm depending on the degree of light shielding property.
このようにして外表面に遮光層７を形成したカバー基材
１はキートップ部２を被覆しているマスキングパターン
９およびその上の部分の遮光層７を除去することによ
り、ここに透光部８を形成するのであるが、この除去に
際してマスキングパターン９の上面に塗布されている遮
光層７を形成している接着性の塗料塗膜をブラシ、布、
サンドペーパーなどで取り除くか、あるいは適当な溶剤
で溶出させれば、その下のマスキングパターン９がカバ
ー基材１に接着していないので、これも容易に取り除く
ことができる。In the cover base material 1 having the light-shielding layer 7 formed on the outer surface in this manner, the masking pattern 9 covering the key top portion 2 and the light-shielding layer 7 on the masking pattern 9 are removed to form the light-transmitting portion. 8 is formed, and at the time of this removal, the adhesive paint film forming the light shielding layer 7 applied to the upper surface of the masking pattern 9 is applied with a brush, cloth,
If the masking pattern 9 thereunder is not adhered to the cover substrate 1 by removing it with sandpaper or the like or eluting it with an appropriate solvent, this can also be easily removed.
第３図は本発明に係わるカバー部材の別の実施態様を示
すもので、本例ではカバー基材11の凸部５の上面に透明
または透光性の塗料による透光層10が設けられているほ
かは、第１図に示したものと同じ構成をしている。FIG. 3 shows another embodiment of the cover member according to the present invention. In this example, a transparent layer 10 made of a transparent or transparent paint is provided on the upper surface of the convex portion 5 of the cover base material 11. Other than that, the configuration is the same as that shown in FIG.
このカバー部材の製造はキートップ部２の上面にカバー
基材11と接着するが透明または光が透過する程度に薄く
着色した塗料で、前例におけるマスキングパターン９を
形成する前か、あるいはマスキングパターン９を取り除
いた後に、塗膜を形成することによって達成される。The cover member is manufactured by adhering to the cover base material 11 on the upper surface of the key top portion 2 but using a paint which is transparent or lightly colored to the extent that light is transmitted, before forming the masking pattern 9 in the previous example, or the masking pattern 9. This is accomplished by forming a coating after removing the.
つぎに本発明の実施例をあげるが、例中の部は重量部を
示したものである。Next, examples of the present invention will be given. Parts in the examples are parts by weight.
（実施例） まず、シリコーンゴム・KE−951U（信越化学工業社製商
品名）100部にカーボンブラック40部を混合したものを
金型内で180℃、200kg/cm2で成形して直径4mm、厚さ0.5
mmの可動接点を作った後、これを金型内面の各キートッ
プ部の凸部に対応する位置に０から９までの数字が形作
られている金型内に載置し、こゝに前記したのと同じシ
リコーンゴム100部に加硫剤Ｃ−８（信越化学工業社製
商品名）２部を加えたシリコーンパウンドを充てんし、
180℃、30kg/cm2に加熱加圧したところ、第１図に示し
た構造のものが10個連なった形状の透明なカバー基材が
得られた。(Example) First, a mixture of 100 parts of silicone rubber KE-951U (trade name of Shin-Etsu Chemical Co., Ltd.) and 40 parts of carbon black was molded in a mold at 180 ° C and 200 kg / cm 2 to have a diameter of 4 mm. , Thickness 0.5
After making a movable contact of mm, place it in the mold in which the numbers from 0 to 9 are formed at the positions corresponding to the convex parts of each key top on the inner surface of the mold, and place it in the above. Fill 100 parts of the same silicone rubber with 2 parts of vulcanizing agent C-8 (trade name manufactured by Shin-Etsu Chemical Co., Ltd.),
When heated and pressed at 180 ° C. and 30 kg / cm 2 , a transparent cover base material having a shape in which 10 pieces having the structure shown in FIG. 1 were connected was obtained.
このカバー基材の各キートップ部の凸部上面に、分子量
約1000の線状ポリエステル樹脂を酢酸エチルで溶解して
約1000cSの粘度に調整したものを塗布して、マスキング
パターンを形成した後、この上に黒色に着色されたシル
マーク（信越化学工業社製商品名）を厚さ15μｍで塗布
し、200℃で30分間加熱してこれをカバー部材に焼き付
けた。On the upper surface of the convex portion of each key top portion of this cover substrate, a linear polyester resin having a molecular weight of about 1000 is dissolved in ethyl acetate to have a viscosity adjusted to about 1000 cS, and then a masking pattern is formed. A black-colored sill mark (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was applied on this to a thickness of 15 μm, and heated at 200 ° C. for 30 minutes to be baked on the cover member.
つぎに、このマスキングパターン上のシルマークによる
塗膜をナイロン製ブラシを用いてマスキングパターンと
ともに削り取ったところ、各キートップ部の凸部上に０
から９までの数字状の透光部をもつカバー部材が得られ
た。Next, when the coating film with the sill mark on the masking pattern was scraped off together with the masking pattern using a nylon brush, 0 was formed on the convex portion of each key top portion.
A cover member having a number-shaped transparent portion from 9 to 9 was obtained.
（発明の効果） 本発明によれば、各キートップ部に透光部をもつカバー
部材を、１個の金型の使用だけで比較的小さな細かい形
状の透光部を持つものとして、安価かつ容易に得ること
ができ、またカバー基材全体が透明または半透明のゴム
材料からなるので、導光路板などを別途用いなくても、
一つの光源で、よく文字、符号または図形がコントラス
トよく浮き上がって見える。(Effect of the Invention) According to the present invention, a cover member having a light-transmitting portion on each key top portion has a light-transmitting portion having a relatively small and fine shape by using only one die, which is inexpensive and inexpensive. It can be easily obtained, and since the entire cover base material is made of a transparent or translucent rubber material, it is possible to use a light guide plate etc. separately.
With one light source, letters, codes, or figures often appear in high contrast.
図面はいずれも本発明に係わるカバー部材をその一単位
についての縦断面図として示すもので、第１図はその一
実施態様についての縦断面図、第２図は第１図における
カバー部材の製造過程を示す縦断面図、第３図は別の実
施態様についての縦断面図である。 図中、 １、11…ゴム製カバー部材、 ２…キートップ部、５…凸部、７…遮光層、 ９…マスキングパターン である。Each of the drawings shows a cover member according to the present invention as a vertical cross-sectional view of one unit thereof. FIG. 1 is a vertical cross-sectional view of one embodiment thereof, and FIG. 2 is a manufacturing process of the cover member in FIG. FIG. 3 is a vertical sectional view showing the process, and FIG. 3 is a vertical sectional view of another embodiment. In the figure, 1, 11 ... Rubber cover member, 2 ... Key top part, 5 ... Convex part, 7 ... Light-shielding layer, 9 ... Masking pattern.
Claims (3)
形をした凸部を有する多数のキートップ部が一体に連設
され、全体が透明または半透明のゴム材料からなるカバ
ー基材の、凸部の上面を除く外表面に遮光層を設けてな
ることを特徴とする照光式押しボタンスイッチ用ゴム製
カバー部材。1. A cover base material made of a transparent or translucent rubber material, in which a large number of key top portions each having a convex portion in the shape of a character, a code or a figure are integrally connected to each surface, A rubber cover member for an illuminated push-button switch, characterized in that a light-shielding layer is provided on the outer surface of the convex portion excluding the upper surface.
形をした凸部を有する多数のキートップ部が一体に連設
されているカバー基材を、透明または半透明のゴム材料
を用いて金型中で加熱形成し、前記凸部の上面に、カバ
ー基材と接着しない塗料を塗布してマスキングパターン
を形成し、このマスキングパターンの上面を含むカバー
基材の外表面全体に、これと接着する遮光性の着色塗料
を塗布して遮光層を形成し、ついでマスキングパターン
をこれを被覆する部分の遮光層と共に取り除いて、凸部
の上面のみを透光性にすることを特徴とする照光式押し
ボタンスイッチ用ゴム製カバー部材の製造方法。2. A cover base material, in which a large number of key top portions each having a convex portion in the shape of a character, a code or a graphic on each surface thereof are integrally connected, are made of a transparent or translucent rubber material. It is formed by heating in a mold, a coating material that does not adhere to the cover base material is applied to the upper surface of the convex portion to form a masking pattern, and the masking pattern is formed on the entire outer surface of the cover base material including the upper surface of the masking pattern. Illumination characterized by applying a light-shielding colored paint to be adhered to form a light-shielding layer, and then removing the masking pattern together with the light-shielding layer in the portion covering the light-shielding layer so that only the upper surface of the convex portion is made transparent. Method for manufacturing a rubber cover member for a push button switch.
形成前、または凸部の上面からのマスキングパターンの
除去後に、凸部の上面に、ゴム製カバー基材と接着する
透明または光が透過する程度に薄く着色した塗料を塗布
して透光層を形成することを特徴とする特許請求の範囲
第２項記載の照光式押しボタンスイッチ用ゴム製カバー
部材の製造方法。3. The transparent or light which adheres to the rubber cover substrate is transmitted to the upper surface of the convex portion before the masking pattern is formed on the upper surface of the convex portion or after the masking pattern is removed from the upper surface of the convex portion. The method for manufacturing a rubber cover member for an illuminated push-button switch according to claim 2, characterized in that the light-transmitting layer is formed by applying a paint that is lightly colored to the extent that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62037335A JPH06105574B2 (en) | 1987-02-20 | 1987-02-20 | Rubber cover member for illuminated push button switch and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62037335A JPH06105574B2 (en) | 1987-02-20 | 1987-02-20 | Rubber cover member for illuminated push button switch and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63205016A JPS63205016A (en) | 1988-08-24 |
| JPH06105574B2 true JPH06105574B2 (en) | 1994-12-21 |
Family
ID=12494748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62037335A Expired - Lifetime JPH06105574B2 (en) | 1987-02-20 | 1987-02-20 | Rubber cover member for illuminated push button switch and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06105574B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05174664A (en) * | 1991-12-24 | 1993-07-13 | San Aroo Kk | Illuminated key |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53141475A (en) * | 1977-05-16 | 1978-12-09 | Toshimichi Naoe | Method of manufacturing key top |
-
1987
- 1987-02-20 JP JP62037335A patent/JPH06105574B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63205016A (en) | 1988-08-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |