JPH0588493B2 - - Google Patents
Info
- Publication number
- JPH0588493B2 JPH0588493B2 JP59024411A JP2441184A JPH0588493B2 JP H0588493 B2 JPH0588493 B2 JP H0588493B2 JP 59024411 A JP59024411 A JP 59024411A JP 2441184 A JP2441184 A JP 2441184A JP H0588493 B2 JPH0588493 B2 JP H0588493B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- switch body
- synthetic resin
- convex portion
- contact
- 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
- 229920003002 synthetic resin Polymers 0.000 claims description 26
- 239000000057 synthetic resin Substances 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011800 void material Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- -1 and one of the molds Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Manufacture Of Switches (AREA)
Description
この発明は、押釦スイツチなどのスイツチ本体
に固定接点としての凸部が形成された端子板をイ
ンサート成形するスイツチ本体の製造方法に関す
るものである。
The present invention relates to a method of manufacturing a switch body, such as a push button switch, by insert molding a terminal plate on which a convex portion as a fixed contact is formed.
ラジオ、カセツトテープレコーダ、VTR、
TV等の電子機器には、スイツチ本体に設けられ
た凹所の底面に凸状の固定接点を配設するととも
に、その凹所に可動接点を配設し、スイツチ本体
に装着されたステムを押圧することによつてこの
可動接点と前記固定接点との接続を図る押釦スイ
ツチが広く利用されている。
この種の押釦スイツチのスイツチ本体を製造す
る技術としては、例えば特開昭55−121226号公報
に記載されたものがある。
この製造方法は、スイツチ本体を成形する上型
と下型とからなる金型に固定接点としての凸部が
形成された端子板を装着して、金型内に形成され
たキヤビテイに合成樹脂を注入して、スイツチ本
体に端子板がインサート成形されるものだが、合
成樹脂の射出時に凸部が所定位置からずれるのを
防止するために次のような手段が講じられてい
る。すなわち、キヤビテイ内での合成樹脂の流路
を狭小な〓間にする突起部を、凸部の背後を臨む
下型の上面に立設し、合成樹脂がこの狭小な〓間
を流れるときに発生する流圧によつて凸部の頂面
部を上型下面に密着させるようにしている。
これによれば、合成樹脂は凸部を上型に向けて
押圧しながらその下面側のみを流れることとな
り、凸部の位置ずれが防止される。
ところで、従来のスイツチ本体では、板厚が約
0.3mm程度の端子板が使用されており、この程度
の板厚のものでは上記の流圧によつては変形しな
いだけの強度があるため、上記の流圧によつて凸
部が撓んだり局部的に変形したりして、上型と凸
部の頂面部との間に〓間が生じて、凸部の頂面側
に合成樹脂がまわりこんで成形後に頂面部に合成
樹脂が付着したまま残つてしまう、いわゆる樹脂
かぶりが起こりにくかつた。また、スイツチ本体
の寸法精度も５／100mm程度に設定されていたた
め、凸部の変形は許容できる範囲のものであつ
た。なお、下型に設けられた突起部によつてスイ
ツチ本体の背面側に成形後に形成される空隙は、
接着剤などを充填することで閉塞されていた。
Radio, cassette tape recorder, VTR,
For electronic devices such as TVs, a convex fixed contact is placed on the bottom of a recess in the switch body, and a movable contact is placed in the recess to press the stem attached to the switch body. Push button switches that connect the movable contact and the fixed contact by doing so are widely used. A technique for manufacturing the switch body of this type of push button switch is described, for example, in Japanese Patent Application Laid-Open No. 121226/1983. In this manufacturing method, a terminal plate with a convex portion as a fixed contact is attached to a mold consisting of an upper mold and a lower mold for molding the switch body, and a synthetic resin is poured into a cavity formed in the mold. The terminal board is insert-molded into the switch body by injection, and the following measures are taken to prevent the convex portion from shifting from the predetermined position during injection of the synthetic resin. In other words, a protrusion that creates a narrow gap between the flow paths of the synthetic resin in the cavity is installed on the upper surface of the lower mold facing behind the convex part, and when the synthetic resin flows through this narrow gap, the problem occurs. The top surface of the convex portion is brought into close contact with the lower surface of the upper mold by the fluid pressure generated. According to this, the synthetic resin flows only on the lower surface side while pressing the convex part toward the upper mold, and the positional shift of the convex part is prevented. By the way, the thickness of the conventional switch body is approximately
A terminal board of about 0.3 mm is used, and a board of this thickness is strong enough not to be deformed by the above fluid pressure, so the protrusion may bend due to the above fluid pressure. Due to local deformation, a gap was created between the upper mold and the top of the convex part, and the synthetic resin wrapped around the top of the convex part, causing the synthetic resin to adhere to the top part after molding. It is less likely to cause so-called resin fog that remains. Furthermore, since the dimensional accuracy of the switch body was set to about 5/100 mm, the deformation of the convex portion was within an acceptable range. In addition, the gap formed on the back side of the switch body after molding by the protrusion provided on the lower mold is
It was sealed by filling it with adhesive.
しかしながら、超小型の押釦スイツチの場合、
端子板の板厚は約0.1〜0.2mmとされ、またスイツ
チ本体の寸法精度も２／100mm程度が要求されて
いる。しかも、凸部の断面形状が、例えばハツト
状のように複雑な曲げ加工により形成されること
が多い。この場合において、従来の製造方法を採
用すると、凸部の強度が弱くなつていることと、
より厳しい寸法精度が要求されていることから、
許容できない大きさの〓間が上型と凸部の頂面部
との間に生じた場合、頂面部に樹脂かぶりが発生
しやすいという問題がある。また、スイツチ本体
の背面側に成形後に形成される空隙を閉塞する作
業によつて工数が多くなり、製品コストが増加す
るという不具合もあつた。しかも、接着剤などに
よる空隙の閉塞では、押釦スイツチの永い間の使
用で、固定接点がスイツチ本体内部に徐々に押し
込まれ、接点不良などの不具合を引き起こすおそ
れがあつた。
この発明は、この実情を考えあわせて創作され
たもので、板厚が従来のものより薄くて、その断
面形状が複雑で、スイツチ本体にインサート成形
される端子板の接点部のインサート成形による樹
脂かぶりを防止することができ、また製品コスト
の増加の抑制、接点不良の防止を図ることのでき
るスイツチ本体の製造方法を提供することを目的
としている。
However, in the case of ultra-small push button switches,
The thickness of the terminal board is approximately 0.1 to 0.2 mm, and the dimensional accuracy of the switch body is also required to be approximately 2/100 mm. Furthermore, the cross-sectional shape of the convex portion is often formed by complicated bending, such as a hat shape. In this case, if the conventional manufacturing method is used, the strength of the convex portion will be weakened,
As stricter dimensional accuracy is required,
If an unacceptably large gap occurs between the upper mold and the top surface of the convex portion, there is a problem in that the top surface is likely to be covered with resin. Further, there was also the problem that the work of closing the void formed after molding on the back side of the switch body increased the number of man-hours and increased the product cost. Moreover, if the gap is closed with adhesive or the like, there is a risk that the fixed contact will gradually be pushed into the switch body after long-term use of the push-button switch, causing problems such as contact failure. This invention was created taking these circumstances into consideration.The board is thinner than conventional ones, its cross-section is complex, and the contact part of the terminal board is insert-molded into the switch body using resin. It is an object of the present invention to provide a method for manufacturing a switch body that can prevent fogging, suppress an increase in product cost, and prevent contact failure.
この発明は、上記の目的を達成するため、可動
接点と接触される固定接点としての凸部が形成さ
れた端子板を、前記凸板に嵌合可能の溝部が形成
された一方の金型と前記凸部の背後の間〓に嵌合
可能の嵌合突起が形成された他方の金型との間に
配設し、前記凸部の頂面部を前記溝部の底壁と前
記嵌合突起とで挟持しつつ、前記一方の金型と前
記他方の金型とから形成されるキヤビテイに合成
樹脂を注入して、前記端子板がインサート成形さ
れたスイツチ本体半製品を仮成形し、次に、前記
他方の金型を取り外し、前記端子板の背面側の空
隙を埋めて補強するために合成樹脂を注入するた
めの補強金型と前記一方の金型とにより前記スイ
ツチ本体半製品を挟持し、前記空隙に合成樹脂を
注入してスイツチ本体完成品を成形することを特
徴としている。
In order to achieve the above-mentioned object, the present invention includes a terminal plate having a convex portion formed thereon as a fixed contact to be brought into contact with a movable contact, and one mold having a groove portion fitable in the convex plate. It is arranged between the other mold having a fitting protrusion that can be fitted between the rear side of the convex part, and the top surface of the convex part is connected to the bottom wall of the groove part and the fitting protrusion. A synthetic resin is injected into the cavity formed by the one mold and the other mold while being held between the two molds, and a semi-finished switch body with the terminal board insert-molded therein is temporarily molded, and then, removing the other mold, sandwiching the semi-finished switch main body between the one mold and a reinforcing mold for injecting synthetic resin to fill and reinforce the gap on the back side of the terminal board; The present invention is characterized in that a synthetic resin is injected into the void to form a completed switch body.
この発明のスイツチ本体の製造方法によれば、
まず、可動接点と接触される固定接点としての凸
部が形成された端子板を、前記凸部に嵌合可能の
溝部が形成された一方の金型と前記凸部の背後の
間〓に嵌合可能の嵌合突起が形成された他方の金
型との間に配設し、前記凸部の頂面部を前記溝部
の底壁と前記嵌合突起とで挟持しつつ、前記一方
の金型と前記他方の金型とから形成されるキヤビ
テイに合成樹脂を注入して、前記端子板がインサ
ート成形されたスイツチ本体半製品を仮成形す
る。このとき、凸部の頂面部と溝部の底壁との間
は密着しているため、頂面部に樹脂かぶりが発生
しない。
さらに、スイツチ本体半製品から前記他方の金
型を取り外し、前記端子板の背面側の空隙を埋め
て補強するために合成樹脂を注入するための補強
金型と前記一方の金型とにより前記スイツチ本体
半製品を挟持し、前記空隙に合成樹脂を注入して
スイツチ本体完成品を成形するようにしているた
め、空隙の閉塞作業を樹脂成形の連続作業で行う
ことができ、工数の低減を図ることができる。し
かも、空隙を閉塞した樹脂はスイツチ本体完成品
の底部に連なつているので、接着剤などと比べて
長期にわたつて接点部を確実に支持することがで
きる。
According to the method for manufacturing a switch main body of this invention,
First, a terminal plate on which a convex part is formed as a fixed contact that comes into contact with a movable contact is fitted between one mold having a groove part that can fit into the convex part and the back of the convex part. and the other mold on which a fitting protrusion that can be fitted is formed, and while the top surface of the convex part is held between the bottom wall of the groove and the fitting protrusion, the one mold A synthetic resin is injected into the cavity formed by the mold and the other mold to temporarily mold a semi-finished switch body into which the terminal plate is insert-molded. At this time, since the top surface of the convex portion and the bottom wall of the groove are in close contact, no resin fogging occurs on the top surface. Furthermore, the other mold is removed from the semi-finished switch main body, and the switch is assembled into a reinforcing mold for injecting synthetic resin to fill and reinforce the gap on the back side of the terminal board and the one mold. Since the finished switch body is molded by holding the semi-finished body and injecting synthetic resin into the gap, the gap can be closed by continuous resin molding, reducing man-hours. be able to. Moreover, since the resin that has closed the gap is connected to the bottom of the completed switch body, the contact portion can be more reliably supported for a longer period of time than adhesives or the like.
以下、この発明の実施例を図面にもとづいて説
明する。
第１図において、１は押釦スイツチで、この押
釦スイツチ１は、後述する製造方法によつて得ら
れる合成樹脂製のスイツチ本体完成品（以下、ス
イツチ本体という）３と、第２図に示すように、
このスイツチ本体３とともにインサート成形され
る端子板４，５（４ａ，５ａがその埋設部）と、
このスイツチ本体３に装着されるステム７とから
大略構成されている。
端子板４，５は、断面凸状に形成された固定接
点としての凸部４ｃ，５ｃを備えている。
ステム７は、蓋体９に形成された挿通孔９ａに
挿通され、この蓋体９はスイツチ本体３の上部に
取り付けられている。ステム７の下端部には、球
状突起８が設けられ、一方、スイツチ本体３の凹
部には、弾発力を備えた可動接点６が収納され、
ステム７を押圧操作することによつて、球状突起
８と可動接点６とが離接し、これにより凸部４
ｃ，５ｃと可動接点６の接点部６ａとの離接が図
られている。
スイツチ本体３は、以下の工程により製造され
る。
まず、第４図において、１０は第１次金型で、
スイツチ本体３の半製品となるスイツチ本体半製
品１３（第３図参照）を成形するキヤビテイ１１
ａを備えた上型１１とキヤビテイ１２ａを備えた
下型１２とから構成されている。
上型１１の下面には、端子板４の凸部４ｃが嵌
合可能に設定された溝部１１ｂが形成されてい
る。
下型１２の上面には、凸部４ｃの背後の間〓に
嵌合可能に設定された嵌合突起１２ｂが形成され
ている。
端子板４は、凸部４ｃの背後の間〓に嵌合突起
１２ｂが嵌合され、脚部４ａを下型１２の所定位
置に固定され、この上から上型１１が装着され、
凸部４ｃが溝部１１ｂに嵌合され、第１次金型１
０の型締めが行われる。このとき、溝部１１ｂの
下面が凸部４ｃの頂面部と密着することになり、
凸部４ｃは溝部１１ｂと嵌合突起１２ｂとで確実
に嵌着状態で挟持される。これと同様にして、凸
部５ｃも確実に挟持される。なお、端子板５の脚
部５ａも所定位置に固定されるものである。
この状態で、キヤビテイ１１ａおよびキヤビテ
イ１２ａ内に合成樹脂が注入される。したがつ
て、溝部１１ｂの底壁と凸部４ｃの頂面部との間
から合成樹脂がまわりこむことを阻止することが
でき、板厚が従来のものよりも薄く、しかも形状
が複雑な固定接点であつても、合成樹脂の注入時
に撓みや局部的な変形が発生せず、厳しい寸法精
度のもとで所要のインサート成形ができる。
合成樹脂を注入した後所定時間冷却して、第１
次金型１０を型開きすると、第３図に示すような
スイツチ本体半製品１３が得られる。
このスイツチ本体半製品１３の背面側には、下
型１２の嵌合突起１２ｂと同形の空隙１３ａが外
部から凸部４ｃの下面にまでわたつて形成されて
いる。なお、凸部５ｃについても、同様の空隙
（図示省略）が形成される。
このようにして得られたスイツチ本体半製品１
３の背面側を、オートデイツプ半田によつて装置
基盤などに固定する場合には、フラツクスが空〓
１３ａを通つて凸部４ｃの下面にまで侵入するお
それがある。
そこで、以下の工程を行う。
第５図において、１５は第２次金型で、前記上
型１１と補強金型１６とから構成されている。
補強金型１６は、スイツチ本体半製品１３の背
面側に形成された空隙１３ａをすべて含むキヤビ
テイＣを備えている。
スイツチ本体半製品１３を、前記上型１１とこ
の補助金型１６とで挟持して型締めを行う。この
とき、空隙１３ａはすべて補強金型１６のキヤビ
テイＣに含まれている。
この状態で、キヤビテイＣ内に合成樹脂が注入
されて、第１図に示すようなスイツチ本体３が得
られる。このようにして得られたスイツチ本体３
は、凸部４ｃの頂面部の樹脂かぶりが完全に防止
されている上に、空隙１３ａ内がスイツチ本体半
製品１３と同質の合成樹脂にて完全に閉塞され、
しかもこの工程で充填された合成樹脂はスイツチ
本体３の底部にまで連なつているので、取り付け
時のフラツクス侵入や長期にわたる押釦スイツチ
の使用に際しての埃や水分の侵入、可動接点によ
る固定接点の押し込みを完全に防止することがで
きる。
しかも、この製造方法は、従来のように空隙１
３ａにいちいち接着剤を別の工程で注入する手間
を省くことができるもので、大量ロツト生産に敵
したものとなつている。
なお、上記の第１次金型から第２次金型への型
換え、すなわち下型１２と補強金型１６との交換
は、従来の樹脂射出成形技術で行われている自動
型換えで行われるものである。
Embodiments of the present invention will be described below based on the drawings. In FIG. 1, 1 is a push button switch, and this push button switch 1 is made of a synthetic resin finished switch body (hereinafter referred to as the switch body) 3 obtained by the manufacturing method described later, and as shown in FIG. To,
Terminal plates 4 and 5 (4a and 5a are the buried parts) which are insert-molded together with this switch body 3,
It is generally composed of a stem 7 attached to the switch body 3. The terminal plates 4 and 5 are provided with convex portions 4c and 5c, which serve as fixed contacts and have a convex cross section. The stem 7 is inserted into an insertion hole 9a formed in a lid 9, and the lid 9 is attached to the upper part of the switch body 3. A spherical protrusion 8 is provided at the lower end of the stem 7, while a movable contact 6 with elastic force is housed in the recess of the switch body 3.
By pressing the stem 7, the spherical protrusion 8 and the movable contact 6 are brought into contact with and separated from each other, whereby the protrusion 4
c, 5c and the contact portion 6a of the movable contact 6 are brought into and out of contact with each other. The switch body 3 is manufactured by the following steps. First, in Fig. 4, 10 is the primary mold,
Cavity 11 for molding a semi-finished switch body 13 (see Figure 3), which is a semi-finished product of the switch body 3
It is composed of an upper mold 11 having a cavity 12a and a lower mold 12 having a cavity 12a. A groove portion 11b is formed in the lower surface of the upper die 11, into which the convex portion 4c of the terminal plate 4 can fit. A fitting protrusion 12b is formed on the upper surface of the lower mold 12 so as to be able to fit into the space behind the convex portion 4c. In the terminal board 4, the fitting protrusion 12b is fitted into the space behind the convex part 4c, the leg part 4a is fixed at a predetermined position on the lower mold 12, and the upper mold 11 is mounted on top of this.
The convex portion 4c is fitted into the groove portion 11b, and the primary mold 1
0 mold clamping is performed. At this time, the lower surface of the groove portion 11b comes into close contact with the top surface portion of the convex portion 4c,
The convex portion 4c is securely held between the groove portion 11b and the fitting protrusion 12b in a fitted state. In the same manner, the convex portion 5c is also securely held. Note that the leg portions 5a of the terminal board 5 are also fixed at predetermined positions. In this state, synthetic resin is injected into the cavities 11a and 12a. Therefore, it is possible to prevent the synthetic resin from coming around from between the bottom wall of the groove 11b and the top surface of the convex part 4c, and the plate thickness is thinner than that of conventional fixed contacts, and the fixed contact has a complicated shape. Even if the synthetic resin is injected, there will be no bending or local deformation, and the required insert molding can be performed with strict dimensional accuracy. After injecting the synthetic resin, it is cooled for a predetermined time and the first
Next, when the mold 10 is opened, a semi-finished switch body 13 as shown in FIG. 3 is obtained. A gap 13a having the same shape as the fitting protrusion 12b of the lower die 12 is formed on the back side of the semi-finished switch body 13, extending from the outside to the lower surface of the convex portion 4c. Note that a similar gap (not shown) is also formed in the convex portion 5c. Switch main body semi-finished product 1 obtained in this way
When fixing the back side of 3 to a device board etc. using auto-dip solder, make sure the flux is empty.
There is a possibility that the particles may penetrate into the lower surface of the convex portion 4c through the convex portion 13a. Therefore, the following steps are performed. In FIG. 5, reference numeral 15 denotes a secondary mold, which is composed of the upper mold 11 and a reinforcing mold 16. The reinforcing mold 16 includes a cavity C that includes all the voids 13a formed on the back side of the semi-finished switch body 13. The half-finished switch body 13 is clamped between the upper die 11 and the auxiliary die 16 and clamped. At this time, all of the voids 13a are included in the cavity C of the reinforcing mold 16. In this state, a synthetic resin is injected into the cavity C to obtain the switch body 3 as shown in FIG. Switch body 3 obtained in this way
In addition to completely preventing the top surface of the convex portion 4c from being covered with resin, the space 13a is completely closed with a synthetic resin of the same quality as the semi-finished switch body 13.
Moreover, since the synthetic resin filled in this process extends to the bottom of the switch body 3, flux may enter during installation, dust and moisture may enter during long-term use of the push-button switch, and fixed contacts may be pushed in by movable contacts. can be completely prevented. Moreover, this manufacturing method is different from the conventional one in that the gap is 1.
This eliminates the need to inject adhesive into each 3a in a separate process, making it suitable for mass lot production. Note that the above-mentioned mold change from the primary mold to the secondary mold, that is, the exchange of the lower mold 12 and the reinforcing mold 16, is performed by automatic mold change performed in conventional resin injection molding technology. It is something that can be done.
以上、説明したように、この発明のスイツチ本
体の製造方法によれば、溝部に接点部を嵌合さ
せ、接点部の背後の間〓に嵌合凸部を嵌合させた
状態で、合成樹脂の注入が行われるので、端子板
の位置ずれが発生せず、接点部の頂面部と溝部の
底壁との間の密着状態が維持され、接点部の頂面
部に樹脂かぶりが発生しない。また、このように
して得られたスイツチ本体半製品の背面側に形成
された空隙をキヤビテイとする補強金型と前記一
方の金型とによりこのスイツチ本体半製品を挟持
し、空隙に合成樹脂を注入してスイツチ本体完成
品を成形するようにしているため、空隙の閉塞作
業を樹脂成形の連続作業で行うことができ、工数
の低減を図ることができる。しかも、空隙を閉塞
した樹脂はスイツチ本体完成品の底部に連なつて
いるので、接着剤などと比べて長期にわたつて接
点部を確実に支持することができる。
As explained above, according to the method of manufacturing a switch main body of the present invention, the contact part is fitted into the groove part, and the fitting convex part is fitted into the space behind the contact part, and then the synthetic resin is injected, the terminal board is not misaligned, the contact state between the top surface of the contact portion and the bottom wall of the groove portion is maintained, and resin fogging does not occur on the top surface portion of the contact portion. Further, the half-finished switch body product thus obtained is held between a reinforcing mold whose cavity is the void formed on the back side of the half-finished switch body product, and one of the molds, and a synthetic resin is injected into the void. Since the resin is injected and the completed switch body is molded, the gap can be closed in a continuous resin molding operation, and the number of man-hours can be reduced. Furthermore, since the resin that has closed the gap is connected to the bottom of the completed switch body, it can support the contact portion more reliably for a long period of time than with adhesives or the like.
第１図はこの発明により製造されたスイツチ本
体を備えた押釦スイツチの断面図、第２図はスイ
ツチ本体の平面図、第３図は第２図中−矢視
断面図、第４図は第１次金型に固定接点を配設し
た状態を示す要部断面図、第５図は補助金型の要
部断面図である。
３……スイツチ本体（スイツチ本体完成品）、
１３……スイツチ本体半製品、４，５……端子
板、４ｃ，５ｃ……凸部（固定接点），６……可
動接点、１０，１５……金型、１１……上型（一
方の金型）、１１ａ……上型のキヤビテイ、１１
ｂ……溝部、１２……下型（他方の金型）、１２
ａ……下型のキヤビテイ、１２ｂ……嵌合突起、
１６……補強金型、Ｃ……補強金型のキヤビテ
イ。
Fig. 1 is a sectional view of a push button switch equipped with a switch body manufactured according to the present invention, Fig. 2 is a plan view of the switch main body, Fig. 3 is a sectional view taken along the arrow in Fig. FIG. 5 is a cross-sectional view of a main part showing a state in which fixed contacts are arranged in a primary mold, and FIG. 5 is a cross-sectional view of a main part of an auxiliary mold. 3...Switch body (completed switch body),
13... Switch body semi-finished product, 4, 5... Terminal board, 4c, 5c... Convex part (fixed contact), 6... Movable contact, 10, 15... Mold, 11... Upper mold (one side mold), 11a...upper mold cavity, 11
b...Groove, 12...Lower mold (other mold), 12
a...lower mold cavity, 12b...fitting protrusion,
16...Reinforcement mold, C...Reinforcement mold cavity.
Claims (1)
が形成された端子板を、前記凸部に嵌合可能の溝
部が形成された一方の金型と前記凸部の背後の間
〓に嵌合可能の嵌合突起が形成された他方の金型
との間に配設し、前記凸部の頂面部を前記溝部の
底壁と前記嵌合突起とで挟持しつつ、前記一方の
金型と前記他方の金型とから形成されるキヤビテ
イに合成樹脂を注入して、前記端子板がインサー
ト成形されたスイツチ本体半製品を仮成形し、次
に、前記他方の金型を取り外し、前記端子板の背
面側の空隙を埋めて補強するために合成樹脂を注
入するための補強金型と前記一方の金型とにより
前記スイツチ本体半製品を挟持し、前記空隙に合
成樹脂を注入してスイツチ本体完成品を成形する
ことを特徴とするスイツチ本体の製造方法。1. Fit a terminal plate on which a convex portion is formed as a fixed contact that comes into contact with a movable contact between one mold in which a groove portion that can fit into the convex portion is formed and the back of the convex portion. and the other mold on which a fitting protrusion is formed, and while the top surface of the convex portion is held between the bottom wall of the groove and the fitting protrusion, Synthetic resin is injected into the cavity formed from the other mold to temporarily mold the switch main body semi-finished product in which the terminal board is insert-molded, and then the other mold is removed and the terminal board is inserted into the cavity. The half-finished switch body is sandwiched between a reinforcing mold for injecting synthetic resin to fill and reinforce the gap on the back side of the switch body, and the one mold, and the synthetic resin is injected into the gap to form the switch body. A method for manufacturing a switch body, which is characterized by molding a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2441184A JPS60170118A (en) | 1984-02-14 | 1984-02-14 | Method of producing switch body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2441184A JPS60170118A (en) | 1984-02-14 | 1984-02-14 | Method of producing switch body |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17045192A Division JPH0679458B2 (en) | 1992-06-29 | 1992-06-29 | Push button switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60170118A JPS60170118A (en) | 1985-09-03 |
| JPH0588493B2 true JPH0588493B2 (en) | 1993-12-22 |
Family
ID=12137414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2441184A Granted JPS60170118A (en) | 1984-02-14 | 1984-02-14 | Method of producing switch body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60170118A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4628778B2 (en) * | 2004-12-24 | 2011-02-09 | 株式会社鷺宮製作所 | Insert molded part for switch, manufacturing method thereof, and pressure switch |
| JP6580058B2 (en) | 2014-10-15 | 2019-09-25 | シチズン電子株式会社 | Switch and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55121226A (en) * | 1979-03-12 | 1980-09-18 | Alps Electric Co Ltd | Housing for electronic device with stationary contact and method of forming same |
| JPS55152236A (en) * | 1979-05-14 | 1980-11-27 | Sekisui Chemical Co Ltd | Building |
-
1984
- 1984-02-14 JP JP2441184A patent/JPS60170118A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55121226A (en) * | 1979-03-12 | 1980-09-18 | Alps Electric Co Ltd | Housing for electronic device with stationary contact and method of forming same |
| JPS55152236A (en) * | 1979-05-14 | 1980-11-27 | Sekisui Chemical Co Ltd | Building |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60170118A (en) | 1985-09-03 |
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