JP2700105B2 - Method of forming cover member for push button switch - Google Patents
Method of forming cover member for push button switchInfo
- Publication number
- JP2700105B2 JP2700105B2 JP4059757A JP5975792A JP2700105B2 JP 2700105 B2 JP2700105 B2 JP 2700105B2 JP 4059757 A JP4059757 A JP 4059757A JP 5975792 A JP5975792 A JP 5975792A JP 2700105 B2 JP2700105 B2 JP 2700105B2
- Authority
- JP
- Japan
- Prior art keywords
- push button
- cover member
- button switch
- forming
- unnecessary
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3443—Switches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacture Of Switches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、小型キーボード、電
卓、リモコン、電話などに用いられる押しボタンスイッ
チ用カバー部材の成形方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a cover member for a push button switch used for a small keyboard, a calculator, a remote controller, a telephone and the like.
【０００２】[0002]
【従来の技術】押しボタンスイッチ用カバー部材は、一
般に一つの製品内に複数個の押しボタン部をもってお
り、この押しボタン部の１個の有無で製品が変わってし
まい、押しボタン部の個数、配置パターンによる製品の
変化は、２〜３０種類にまで及ぶ。従来はこれら一つ一
つの製品に対して金型をつくるか、あるいは押しボタン
部がすべて有る製品をつくり、成形後、不必要な押しボ
タン部をカッター等を用いて切除するという方法が用い
られていた。2. Description of the Related Art In general, a cover member for a push button switch has a plurality of push button portions in one product, and the product changes depending on the presence or absence of one push button portion. The change of the product depending on the arrangement pattern ranges from 2 to 30 types. Conventionally, a method has been used in which a mold is made for each of these products, or a product having all push buttons is formed, and after molding, unnecessary push buttons are cut off using a cutter or the like. I was
【０００３】[0003]
【発明が解決しようとする課題】同一製品内の任意の押
しボタン部の有無のみによる製品の違いで、その種類ご
とに金型を作ると、コストが非常に高くつく。また、不
必要な押しボタン部を切除するという方法は切除する不
必要な押しボタン部が１〜５０部分になると切除するの
に要する時間が非常に増し、また切除部分の寸法も安定
したものを得ることが難しいという欠点があった。The cost is extremely high if a mold is made for each type of product due to only the presence or absence of an arbitrary push button in the same product. In addition, the method of cutting off the unnecessary push button part requires an extremely long time to cut off when the unnecessary push button part to be cut becomes 1 to 50 parts, and the size of the cut part is also stable. There was a drawback that it was difficult to obtain.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記した従来
の問題を解決するもので、これは、複数個の押しボタン
部、可動用薄肉部およびベース部を有し、シリコーン弾
性体からなる押しボタンスイッチ用カバー部材の成形方
法であって、金型に設けられた前記押しボタン部を形成
するための複数の凹部のうち、不必要な凹部に、この凹
部に近似する形状と耐熱性を有するゴムで形成された充
填物を詰めて圧縮成形し、この充填物の大きさを前記凹
部の容積の1.0 〜1.2 倍とすることを特徴とする押しボ
タンスイッチ用カバー部材の成形方法を要旨とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and comprises a plurality of push buttons.
Section, a movable thin-walled section and a base section.
Of cover member for push button switch made of sexual body
Forming the push button portion provided on a mold.
Of the plurality of recesses for making
Filled with rubber that has a shape similar to the part and heat resistance
The filling is packed and compression molded, and the size of this filling is
A method of forming a cover member for a push button switch , wherein the volume is 1.0 to 1.2 times the volume of the portion .
【０００５】すなわち、本発明は、複数個の押しボタン
部、可動用薄肉部およびベース部を有するシリコーン弾
性体からなる押しボタンスイッチ用カバー部材を成形す
るに際し、一つの金型内に不必要な押しボタン部を形成
する凹部がある場合の圧縮成形方法である。 具体的に
は、成形用金型の不必要な押しボタン部に相当する凹部
にゴムで、その部分と同じか、類似した形状を有し、そ
の熱膨張率に応じて１．０〜１．２倍の容積のものを詰
める。これによって金型の凹部は弾性を有するゴムで充
満され、よって被成形物が金型の凹部と充填物との隙間
に入り込むことはなく、また、金型を傷めることもな
い。詰めた充填物は必要に応じて取り出したり、また入
れたりすることが容易にできるようあらかじめ賦形され
ており、繰り返し使用できるよう耐熱性のあるゴムで作
られていることが好ましい。That is, according to the present invention , a cover member for a push button switch formed of a silicone elastic body having a plurality of push button portions, a movable thin portion and a base portion is formed.
Unnecessary push button part is formed in one mold when
This is a compression molding method when there is a concave portion to be formed. Specifically
Is a recess corresponding to an unnecessary push button part of the molding die
Rubber with the same or similar shape as the part,
1.0 to 1.2 times the volume depending on the coefficient of thermal expansion
Confuse. As a result, the concave portion of the mold is filled with elastic rubber.
Filled, so that the molded object is the gap between the concave part of the mold and the filling
It does not penetrate and does not damage the mold.
No. The filled filler is preferably shaped in advance so that it can be easily taken out and put in as necessary, and is preferably made of a heat-resistant rubber so that it can be used repeatedly.
【０００６】[0006]
【実施例】（実施例１）シリコーン弾性体から 押しボタンスイッチ用カバー部材
を成形する金型に、製品にとって不必要な押しボタン部
に相当する凹部が５ケ所あり、金型のこの不必要押しボ
タン部の形状は直径３．３ｍｍ、高さ３．５ｍｍの円柱
状である。これに詰める充填物として直径３．８ｍｍ、
高さ３．０ｍｍの円柱状のフッ素ゴムを用意した。この
フッ素ゴムを金型の不必要な凹部に詰め、圧縮成形によ
り１７０℃、３分間成形したところ、製品として不必要
部分のない押しボタンスイッチ用カバー部材が得られ
た。(Embodiment 1) A cover member for a push button switch made of silicone elastic material
Forming the the mold, there recess 5 places corresponding to the unnecessary push button unit <br/> for products, the unnecessary pressing volume of the mold
The shape of the tongue portion is a column having a diameter of 3.3 mm and a height of 3.5 mm. 3.8 mm in diameter as the filling material
A columnar fluororubber having a height of 3.0 mm was prepared. Unnecessary concave portions of the mold were filled with this fluororubber and molded at 170 ° C. for 3 minutes by compression molding. As a result, a cover member for a push button switch having no unnecessary portions as a product was obtained.
【０００７】[0007]
【発明の効果】本発明により、押しボタンスイッチ用カ
バー部材の成形に際して、押しボタン部の個数、配置パ
ターン等の異なる同系異種製品については金型を新規に
作成する必要がなくなり、コストを大幅に下げられる。
また、不必要な押しボタン部を形成しないことから、不
必要な押しボタン部分の切除という作業をなくすという
ことだけでなく、今まで廃棄していた部分がなくなり、
材料の無駄もなくなる。According to the present invention, when forming a cover member for a push button switch, the number and arrangement of the push button portions are reduced.
For similar products of different types such as turns, there is no need to create a new mold, and costs can be significantly reduced.
In addition, since the unnecessary push button part is not formed, not only the work of cutting off the unnecessary push button part but also the part that has been discarded until now disappears,
No waste of materials.
Claims (1)
びベース部を有し、シリコーン弾性体からなる押しボタ
ンスイッチ用カバー部材の成形方法であって、金型に設
けられた前記押しボタン部を形成するための複数の凹部
のうち、不必要な凹部に、この凹部に近似する形状と耐
熱性を有するゴムで形成された充填物を詰めて圧縮成形
し、この充填物の大きさを前記凹部の容積の1.0 〜1.2
倍とすることを特徴とする押しボタンスイッチ用カバー
部材の成形方法。A plurality of push button portions, a movable thin portion,
Push button made of silicone elastic body
This is a method of forming a cover member for
A plurality of recesses for forming the pressed push button portion
Of these, unnecessary concave parts have a shape similar to this concave part and
Packing and compression molding of rubber-made filler
The size of the filler is 1.0 to 1.2 times the volume of the recess.
A method for forming a cover member for a push button switch, characterized in that the cover member is doubled .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4059757A JP2700105B2 (en) | 1992-02-14 | 1992-02-14 | Method of forming cover member for push button switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4059757A JP2700105B2 (en) | 1992-02-14 | 1992-02-14 | Method of forming cover member for push button switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06181020A JPH06181020A (en) | 1994-06-28 |
| JP2700105B2 true JP2700105B2 (en) | 1998-01-19 |
Family
ID=13122458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4059757A Expired - Lifetime JP2700105B2 (en) | 1992-02-14 | 1992-02-14 | Method of forming cover member for push button switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2700105B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0234768B2 (en) * | 1981-07-02 | 1990-08-06 | Matsushita Electric Ind Co Ltd | ITAJOSEIKEIBUTSUNOSEIKEIGATA |
| FI64427C (en) * | 1982-05-13 | 1989-11-08 | Uponor Nv | Floor drain or other cup-shaped water trap. |
| JPS6073827A (en) * | 1983-09-30 | 1985-04-26 | Takara Co Ltd | Method for molding synthetic resin toy |
| JPS6130822U (en) * | 1984-07-30 | 1986-02-24 | 敬介 本多 | Underwater sensor |
| JPH035115A (en) * | 1989-06-02 | 1991-01-10 | Shinobu Takeuchi | Mold structure for resin molding |
-
1992
- 1992-02-14 JP JP4059757A patent/JP2700105B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06181020A (en) | 1994-06-28 |
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