JPH053807B2 - - Google Patents
Info
- Publication number
- JPH053807B2 JPH053807B2 JP61122829A JP12282986A JPH053807B2 JP H053807 B2 JPH053807 B2 JP H053807B2 JP 61122829 A JP61122829 A JP 61122829A JP 12282986 A JP12282986 A JP 12282986A JP H053807 B2 JPH053807 B2 JP H053807B2
- Authority
- JP
- Japan
- Prior art keywords
- display
- display member
- key top
- slide pin
- external member
- 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 - Fee Related
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1681—Making multilayered or multicoloured articles one layer penetrating at one or more areas through another layer
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0025—Opaque
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
-
- 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
- B29L2031/46—Knobs or handles, push-buttons, grips
- B29L2031/466—Keypads, keytops
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Switches (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、カーステレオ・カーラジオ等の各種
入力装置に使用されるキートツプの製造方法に関
し、特に表示部を照光させるキートツプの製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a keytop used in various input devices such as car stereos and car radios, and more particularly to a method of manufacturing a keytop that illuminates a display section.
キートツプの文字などの表示部を成形する方法
としては、一般にいわゆる二色成形法が用いられ
ている。
A so-called two-color molding method is generally used as a method for molding display parts such as characters on key tops.
二色成形法は、表示部を含む表示部材を成形し
た後その表面に表示部の天面のみ残すようにして
外形部材を表示部材上に一体に成形する方法であ
る。 The two-color molding method is a method in which a display member including a display part is molded, and then an external member is integrally molded onto the display member, leaving only the top surface of the display part on the surface thereof.
キートツプの二色成形法を第４図、第５図によ
り説明する。 The two-color molding method for key tops will be explained with reference to FIGS. 4 and 5.
第４図は表示部材を示す斜視図で、第５図は第
４図の表示部材上に外形部材を一体に成形したキ
ートツプを示す斜視図である。１は合成樹脂から
なる表示部材で、この表示部材１の上面に表示部
２を突出させて成形する。次に、表示部材１の外
側に表示部２の天面を露出させるようにして外形
部材６を一体に成形してキートツプ７を形成す
る。 FIG. 4 is a perspective view showing the display member, and FIG. 5 is a perspective view showing a key top in which an external member is integrally molded on the display member shown in FIG. Reference numeral 1 denotes a display member made of synthetic resin, and a display portion 2 is formed on the upper surface of the display member 1 so as to protrude therefrom. Next, the key top 7 is formed by integrally molding the external member 6 so as to expose the top surface of the display section 2 to the outside of the display member 1.
ここで、たとえば数字の“０”，“４”のように
表示部２が周囲を囲まれた閉鎖部３を有する場合
には、表示部材１の成形時に横方向移動可能なス
ライドピン（図示せず）で溝４を形成し、スライ
ドピンを引き抜いた後、溝４を介して閉鎖部３に
外形部材６の樹脂を注入しながら表示部材１上に
外形部材６を一体に成形しキートツプ７を形成し
ていた。 Here, when the display part 2 has a closing part 3 surrounded by the numbers "0" and "4", a slide pin (not shown in the figure) that can be moved laterally during molding of the display member 1 is used. After forming the groove 4 with step 4 and pulling out the slide pin, the outer member 6 is integrally molded on the display member 1 while injecting the resin of the outer member 6 into the closing part 3 through the groove 4, and the key top 7 is formed. was forming.
しかし、上記方法によれば表示部２を透明又は
半透明とし、表示部２のみ照光させるような場合
で、かつ表示部２に閉鎖部３を有する場合には、
表示部２より光透過度の小さい外形部材６が表示
部２下方の溝４に成形されるためその部分が影５
となつて目視されてしまい、表示部２が均一に照
光できないという問題点があつた。
However, according to the above method, when the display section 2 is made transparent or translucent and only the display section 2 is illuminated, and when the display section 2 has the closing section 3,
Since the external member 6 having a smaller light transmittance than the display part 2 is molded in the groove 4 below the display part 2, that part becomes a shadow 5.
Therefore, there was a problem that the display section 2 could not be uniformly illuminated.
〔問題点を解決するための手段〕
本発明は、表示部と台部を有する表示部材上に
外形部材を一体に成形し、表示部材は外形部材よ
りも光透過度の高い樹脂で成形して表示部を照光
させるようにしたキートツプの製造方法におい
て、金型中にスライドピンを介在させて表示部の
閉鎖部とこの閉鎖部の外側におのおの孔を形成す
ると共に、これらの孔の間に台部の厚みより大き
い突出部を形成して表示部材を成形する工程と、
スライドピンを下降させて外形部材を孔を介して
閉鎖部に樹脂を注入しながら表示部材上に一体に
成形する工程と、表示部材の突出部を切断する工
程とからなるキートツプの製造方法である。[Means for Solving the Problems] The present invention is characterized in that an external member is integrally molded on a display member having a display portion and a base portion, and the display member is molded from a resin having higher light transmittance than the external member. In a method of manufacturing a key top in which the display part is illuminated, a slide pin is interposed in the mold to form a closing part of the display part and holes on the outside of this closing part, and a base is inserted between these holes. forming a display member by forming a protrusion larger than the thickness of the display member;
This key top manufacturing method includes the steps of lowering a slide pin and integrally molding the external member onto the display member while injecting resin into the closing part through the hole, and cutting the protruding part of the display member. .
表示部の閉鎖部とこの閉鎖部の外側におのおの
形成された孔から樹脂を注入することにより表示
部の閉鎖部に外形部材を注入、成形し、かつ、こ
れらの孔の間に形成された表示部材の突出部を切
断することにより突出部下方に一体に成形された
外形部材を除去する。
A display formed by injecting and molding an external member into the closing part of the display part by injecting resin through holes formed in the closing part of the display part and the outside of this closing part, respectively, and forming between these holes. By cutting the protrusion of the member, the external member integrally molded below the protrusion is removed.
以下、本発明に係るキートツプの製造方法を図
面を基にして説明する。
Hereinafter, a method for manufacturing a key top according to the present invention will be explained based on the drawings.
第１図は表示部材の金型を示す要部断面図、第
２図は第１図のスライドピンの位置を示す斜視
図、第３図は第１図の表示部材上に外形部材を一
体に成形する金型を示す要部断面図である。 Fig. 1 is a cross-sectional view of the main parts showing the mold of the display member, Fig. 2 is a perspective view showing the position of the slide pin shown in Fig. 1, and Fig. 3 is an integral part of the external member on the display member shown in Fig. 1. FIG. 2 is a cross-sectional view of a main part showing a mold for molding.
まず、第１図のように注入口８から透明樹脂を
注入して金型９，１０により表示部１１と台部１
２を成形し表示部材１３を成形する。この時、第
２図のように突部１４，１５を有するスライドピ
ン１６を金型９，１０中に介在させて表示部１１
の閉鎖部１７とこの閉鎖部１７の外側におのおの
孔１８，１９を設ける。孔１８，１９の間には突
出部２０を形成するが、この突出部２０は台部１
２の厚みにより寸法ｄだけ大きくする。スライド
ピン１６は上下動可能とされている。 First, as shown in FIG. 1, transparent resin is injected from the injection port 8 and molds 9 and 10 are used to form the display part 11 and the base part 1.
2 to form the display member 13. At this time, as shown in FIG.
A closing portion 17 and holes 18 and 19 are provided on the outside of the closing portion 17, respectively. A protrusion 20 is formed between the holes 18 and 19, and this protrusion 20
The thickness of 2 is increased by the dimension d. The slide pin 16 is vertically movable.
次に、第３図のように金型１０を金型２１に交
換して、金型２１を表示部１１の天面２２の位置
に固定し、表示部材１３との間隙に注入口８より
不透明樹脂を注入して外形部材２３を成形する。
この時、スライドピン１６も下動させて不透明樹
脂を表示部１１の閉鎖部１７に注入し成形する。 Next, as shown in FIG. 3, the mold 10 is replaced with a mold 21, and the mold 21 is fixed at the top surface 22 of the display section 11. The external member 23 is molded by injecting resin.
At this time, the slide pin 16 is also moved downward to inject and mold the opaque resin into the closing part 17 of the display part 11.
即ち、スライドピン１６の突部１４，１５を表
示部材１３の突出部２０よりも低い位置まで下動
させることにより表示部材１３の突出部２０とス
ライドピン１６との間に間隙を形成し、不透明樹
脂を孔１８から孔１９を通して表示部１１の閉鎖
部１７へ注入する。その後台部１２の底面の延長
線上もしくは第３図Ａ−Ａ部で自動機（カツタ）
等により突出部２０を切断してキートツプ７が形
成される。この時、突出部２０の下方に一体に成
形された外形部材（不透明樹脂）も一緒に切断、
除去されるので、キートツプ７の背面から照光し
ても表示部１１上に外形部材２３の影が投影され
ることはなく均一な表示を得ることができる。 That is, by moving the protrusions 14 and 15 of the slide pin 16 down to a position lower than the protrusion 20 of the display member 13, a gap is formed between the protrusion 20 of the display member 13 and the slide pin 16, and the opaque The resin is injected into the closing part 17 of the display part 11 through the hole 18 and the hole 19. After that, an automatic machine (cutter) is placed on the extension line of the bottom of the stand 12 or in the section A-A in Fig. 3.
The key top 7 is formed by cutting the protrusion 20 using a method such as the following. At this time, the external member (opaque resin) integrally molded below the protrusion 20 is also cut.
Since it is removed, even if the key top 7 is illuminated from the back surface, the shadow of the external member 23 is not projected onto the display section 11, and a uniform display can be obtained.
以上のように本発明のキートツプの製造方法に
よれば、表示部材が外形部材より光透過度を大き
くして表示部を照光させるキートツプでかつ表示
部に閉鎖部を有する場合であつても外形部材の影
が表示部に投影することはなく均一な表示の行な
えるキートツプを得ることができる。
As described above, according to the method for manufacturing a key top of the present invention, even if the display member is a key top that illuminates the display part with a higher light transmittance than the outer member, and the display part has a closing part, the outer member The shadow of the key top is not projected onto the display section, and a key top that can be displayed uniformly can be obtained.
第１図は本発明の表示部材の金型を示す要部断
面図、第２図は第１図のスライドピンの位置を示
す斜視図、第３図は第１図の表示部材上に外形部
材を一体に成形する金型を示す要部断面図、第４
図は従来の表示部材を示す斜視図、第５図は従来
のキートツプを示す斜視図である。
８…注入口、９，１０…金型、１１…表示部、
１２…台部、１３…表示部材、１４，１５…突
部、１６…スライドピン、１７…閉鎖部、１８，
１９…孔、２０…突出部、２１…金型、２２…天
面、２３…外形部材。
FIG. 1 is a cross-sectional view of a main part showing the mold of the display member of the present invention, FIG. 2 is a perspective view showing the position of the slide pin shown in FIG. 1, and FIG. 4th cross-sectional view of main parts showing a mold for integrally molding
This figure is a perspective view showing a conventional display member, and FIG. 5 is a perspective view showing a conventional key top. 8... Inlet, 9, 10... Mold, 11... Display section,
12... Base part, 13... Display member, 14, 15... Projection, 16... Slide pin, 17... Closing part, 18,
19... Hole, 20... Projection, 21... Mold, 22... Top surface, 23... External member.
Claims (1)
を一体に成形し、表示部材は外形部材よりも光透
過度の高い樹脂で成形して表示部を照光させるよ
うにしたキートツプの製造方法において、金型中
にスライドピンを介在させて表示部の閉鎖部とこ
の閉鎖部の外側におのおの孔を形成すると共に、
これらの孔の間に台部の厚みより大きい突出部を
形成して表示部材を成形する工程と、スライドピ
ンを下降させて外形部材を孔を介して閉鎖部に樹
脂を注入しながら表示部材上に一体に成形する工
程と、表示部材の突出部を切断する工程とからな
るキートツプの製造方法。1. In a method for manufacturing a key top, in which an external member is integrally molded on a display member having a display part and a base part, and the display member is molded with a resin having higher light transmittance than the external member, so that the display part is illuminated. , a slide pin is interposed in the mold to form a closing part of the display part and a hole on the outside of this closing part, and
A process of forming a display member by forming a protrusion larger than the thickness of the base part between these holes, and a step of lowering the slide pin to move the external member onto the display member while injecting resin into the closing part through the hole. A method for manufacturing a key top, which comprises the steps of integrally molding the display member and cutting the protruding portion of the display member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12282986A JPS62279911A (en) | 1986-05-28 | 1986-05-28 | Manufacture of key top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12282986A JPS62279911A (en) | 1986-05-28 | 1986-05-28 | Manufacture of key top |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5325962A Division JP2535308B2 (en) | 1993-11-30 | 1993-11-29 | Key top |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62279911A JPS62279911A (en) | 1987-12-04 |
| JPH053807B2 true JPH053807B2 (en) | 1993-01-18 |
Family
ID=14845669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12282986A Granted JPS62279911A (en) | 1986-05-28 | 1986-05-28 | Manufacture of key top |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62279911A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069878B2 (en) * | 1989-02-07 | 1994-02-09 | 大成プラス株式会社 | Operation button and its manufacturing method |
| JPH0688285B2 (en) * | 1989-04-21 | 1994-11-09 | 大和技研工業株式会社 | Method for manufacturing heat insulating member made of synthetic resin |
| JPH0757501B2 (en) * | 1989-06-10 | 1995-06-21 | 日精樹脂工業株式会社 | Compound injection molding method |
| JPH03208616A (en) * | 1990-01-12 | 1991-09-11 | Hissei Jitsugyo Yugenkoshi | Manufacture of casing for push- button switch using display housing with display cavity and casing for push-button switch manufactured using said casing manufacturing method |
| JP2535308B2 (en) * | 1993-11-30 | 1996-09-18 | アルプス電気株式会社 | Key top |
| JP4109613B2 (en) * | 2003-11-21 | 2008-07-02 | 日精樹脂工業株式会社 | Translucent display and method for manufacturing the same |
| ATE412247T1 (en) * | 2005-08-04 | 2008-11-15 | Silitech Technology Corp | BUTTON MODULE AND METHOD FOR PRODUCING THEREOF |
| KR102369965B1 (en) * | 2020-12-24 | 2022-03-03 | 주식회사 수인산업 | Manufacturing Method of Flood Light Button using Double Injection Molding and The Button |
| KR102369964B1 (en) * | 2020-12-24 | 2022-03-03 | 주식회사 수인산업 | Manufacturing Method of Button using Double Injection Molding and The Button |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166823U (en) * | 1984-10-08 | 1986-05-08 | ||
| JP2950856B2 (en) * | 1989-07-13 | 1999-09-20 | 富士通株式会社 | First-in first-out memory configuration method |
-
1986
- 1986-05-28 JP JP12282986A patent/JPS62279911A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62279911A (en) | 1987-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |