JPH0132341Y2 - - Google Patents
Info
- Publication number
- JPH0132341Y2 JPH0132341Y2 JP5221683U JP5221683U JPH0132341Y2 JP H0132341 Y2 JPH0132341 Y2 JP H0132341Y2 JP 5221683 U JP5221683 U JP 5221683U JP 5221683 U JP5221683 U JP 5221683U JP H0132341 Y2 JPH0132341 Y2 JP H0132341Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- coil case
- resin
- opening
- protrusion
- 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
Links
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関用点火コイルの一種である
モールド型コイルに用いられる絶縁性コイルケー
スに関する。[Detailed Description of the Invention] The present invention relates to an insulating coil case used in a molded coil, which is a type of ignition coil for internal combustion engines.
この種コイルを製造する場合には、一端に開口
部を有する有底筒状をなすコイルケース内に１次
および２次コイル等を配設し、また開口部側端部
外周面に樹脂漏出防止用の弾性筒体を嵌合し、次
いでその筒体を通じてコイルケース内に液状樹脂
を注入し、その後液状樹脂を、それに真空脱泡処
理を施して硬化させるものである。上記筒体は、
液状樹脂の真空脱泡処理後それが減量することを
見越して過剰に注入される液状樹脂を収容すると
共に真空脱泡処理時における液状樹脂面の上昇を
許容するために用いられるものであり、液状樹脂
の硬化後には取外される。 When manufacturing this type of coil, the primary and secondary coils are placed inside a bottomed cylindrical coil case with an opening at one end, and resin leakage is prevented on the outer peripheral surface of the end on the opening side. Then, a liquid resin is injected into the coil case through the cylinder, and then the liquid resin is subjected to a vacuum degassing treatment and hardened. The above cylinder is
It is used to accommodate the liquid resin that is injected in excess in anticipation of the amount of liquid resin being reduced after the vacuum defoaming process, and also to allow the level of the liquid resin to rise during the vacuum defoaming process. It is removed after the resin has hardened.
この場合筒体を平滑なコイルケース外周面に単
に嵌合しただけでは、注入樹脂に対する十分なシ
ール効果が得られないので、従来は筒体をコイル
ケースに接着しているが、このような手段を採る
と製造工数が多くなるだけでなく、製品コストが
上昇するといつた不具合がある。 In this case, simply fitting the cylindrical body onto the smooth outer circumferential surface of the coil case does not provide a sufficient sealing effect against the injected resin, so conventionally the cylindrical body is glued to the coil case, Adopting this method not only increases the number of manufacturing steps, but also raises the cost of the product.
本考案は上記不具合を除去することを目的とす
るもので、極めて簡単な手段により筒体を外周面
全周に亘り確実に密合させて注入樹脂の漏洩を防
止し得るようにした前記コイルケースを提供する
ことを目的とする。 The purpose of the present invention is to eliminate the above-mentioned problems, and the present invention provides the above-mentioned coil case in which leakage of the injected resin can be prevented by reliably fitting the cylindrical body over the entire outer circumferential surface using extremely simple means. The purpose is to provide
以下、図面により本考案の一実施例について説
明すると、１は一端に開口部を有し、合成樹脂よ
り成形された、有底筒状をなす絶縁性コイルケー
スで、その外周面には開口端に位置する環状抜止
め突起１ａと、それとの間に所定の間隔を存して
位置する、その突起１ａより大径の環状漏止め突
起１ｂが形成されている。抜止め突起１ａの外周
面および両突起１ａ，１ｂ間におけるコイルケー
ス１外周面は、それぞれ開口部に向けて先細りの
テーパ面f1，f2に形成される。 Below, one embodiment of the present invention will be described with reference to the drawings. 1 is an insulating coil case having an opening at one end and having a bottomed cylindrical shape molded from synthetic resin; An annular leak-preventing protrusion 1a located at , and an annular leak-preventing protrusion 1b having a larger diameter than that protrusion 1a are formed at a predetermined distance therebetween. The outer circumferential surface of the retaining protrusion 1a and the outer circumferential surface of the coil case 1 between the protrusions 1a and 1b are respectively formed into tapered surfaces f1 and f2 that taper toward the opening.
コイルケース１内には１次コイル２の内側に２
次コイル３を同心状に位置させて両コイル２，３
が配設される。１次コイル２の内端面はコイルケ
ース１の内周面に形成された段部４に衝合され、
これにより１次コイル２が２次コイル３の母線方
向中間部に位置し得るように配設される。２次コ
イル３は合成樹脂製中空ボビン５に巻装されてお
り、その角形中心孔６内にフエライトコア７が嵌
合されると共に２次端子用接続板８が貫通してい
る。接続板８のコイルケース開口部側端末は折曲
げられており、その折曲げ部に２次端子９が半田
を介して接続され、その２次端子９は、合成樹脂
よりなる高圧コード用絶縁性接続筒１０に、その
底部を貫通して取付けられる。また接続板８のコ
イルケース底部側端末は同様に折曲げられてお
り、その折曲げ部に２次コイル３の巻始め端末３
ａが半田を介して接続される。 Inside the coil case 1, there are 2 coils inside the primary coil 2.
The next coil 3 is positioned concentrically and both coils 2, 3
will be placed. The inner end surface of the primary coil 2 abuts against a step 4 formed on the inner peripheral surface of the coil case 1,
Thereby, the primary coil 2 is arranged so that it can be located in the middle of the secondary coil 3 in the generatrix direction. The secondary coil 3 is wound around a hollow bobbin 5 made of synthetic resin, and a ferrite core 7 is fitted into the rectangular center hole 6 of the bobbin 5, and a connecting plate 8 for a secondary terminal passes through the secondary coil 3. The end of the connecting plate 8 on the side of the coil case opening is bent, and a secondary terminal 9 is connected to the bent part via solder. It is attached to the connecting tube 10 by penetrating its bottom. Further, the terminal of the connection plate 8 on the bottom side of the coil case is bent in the same way, and the winding start terminal 3 of the secondary coil 3 is placed at the bent part.
a is connected via solder.
両１次端子１１は同一形状を有し、各端子１１
は低圧コード用接続部１１ａと、それの基端に折
曲げ形成された鉤形取付部１１ｂとよりなる。取
付部１１ｂの、接続部１１ａと反対方向に折曲が
る先端部分には弾性爪１２が、その先端を接続部
１１ａ側に位置させて切起しにより形成され、ま
た接続部１１ａの基部にはコ字形切欠き部１３が
形成される。 Both primary terminals 11 have the same shape, and each terminal 11
consists of a low-voltage cord connecting portion 11a and a hook-shaped attachment portion 11b bent at the base end thereof. An elastic pawl 12 is formed at the tip of the attachment portion 11b that bends in the opposite direction to the connection portion 11a by cutting and bending the tip of the attachment portion 11b toward the connection portion 11a. A letter-shaped notch 13 is formed.
一方の１次端子１１の切欠き部１３には、１次
コイル２の巻始め端末２ａが巻付けられ半田を介
して接続される。また他方の１次端子１１の切欠
き部１３には、１次コイル２と２次コイル３の巻
終り端末２ｂ，３ｂが巻付けられ、同様に半田を
介して接続される。 The winding start end 2a of the primary coil 2 is wound around the notch 13 of one of the primary terminals 11 and connected via solder. Further, the winding end terminals 2b and 3b of the primary coil 2 and the secondary coil 3 are wound around the notch 13 of the other primary terminal 11, and similarly connected via solder.
コイルケース１には、その開口部端面に開口す
る一対の端子位置決め孔１４が180゜の位相差を以
て形成されており、両端子位置決め孔１４には一
対の１次端子１１における取付部１１ｂの先端部
分がその弾性爪１２の弾性力に抗して強制的にそ
れぞれ挿入され、これにより両１次端子１１がコ
イルケース１開口部に位置決め固定される。 A pair of terminal positioning holes 14 are formed in the coil case 1 with a phase difference of 180 degrees, and the ends of the mounting portions 11b of the pair of primary terminals 11 are located in the terminal positioning holes 14. The portions are forcibly inserted against the elastic force of the elastic claws 12, whereby both primary terminals 11 are positioned and fixed in the opening of the coil case 1.
またコイルケース１の開口部内周面には、一対
の切欠状位置決め凹部１５が180゜の位相差を以て
形成されており、両位置決め凹部１５には接続筒
１０の底部外周面に設けられた一対の突出部１６
先端の位置決め突起１７が係合され、これにより
接続筒１０がコイルケース１開口部に位置決めさ
れる。 In addition, a pair of notch-shaped positioning recesses 15 are formed on the inner peripheral surface of the opening of the coil case 1 with a phase difference of 180 degrees, and both positioning recesses 15 have a pair of notch-shaped positioning recesses 15 formed on the outer peripheral surface of the bottom of the connecting tube 10. Projection 16
The positioning protrusion 17 at the tip is engaged, thereby positioning the connecting tube 10 at the opening of the coil case 1.
上記のように、各構成部品をコイルケース１に
配設した後そのケース１内にはエポキシ樹脂等の
熱硬化性合成樹脂Ｒが注入硬化されるが、この作
業に当つては、先ず第５図に示すようにシリコー
ンゴム等よりなる離型性の良い弾性筒体１８が、
その弾性を利用してコイルケース１の漏止め突起
１ｂ外周面全周に密合される。そして筒体１８を
通じてコイルケース１内に液状樹脂を過剰に注入
して開口部より溢れさせ、その樹脂内に開口部を
埋める。次いで真空脱泡処理を施した後液状樹脂
を硬化させる。 As mentioned above, after each component is arranged in the coil case 1, a thermosetting synthetic resin R such as an epoxy resin is injected and hardened into the case 1. As shown in the figure, an elastic cylinder 18 with good mold releasability made of silicone rubber, etc.
Utilizing its elasticity, the leak-proof protrusion 1b of the coil case 1 is tightly fitted to the entire outer circumferential surface of the protrusion 1b. Then, an excessive amount of liquid resin is injected into the coil case 1 through the cylindrical body 18 to overflow from the opening, and the opening is filled with the resin. Next, after performing a vacuum defoaming process, the liquid resin is cured.
上記液状樹脂の注入から硬化までの間、筒体１
８の内周面が漏止め突起１ｂの外周面に密合して
いるので、両者１８，１ｂ間より液状樹脂が漏れ
ることはない。 During the period from injection of the liquid resin to hardening, the cylindrical body 1
Since the inner circumferential surface of 8 is in close contact with the outer circumferential surface of the leak-proof protrusion 1b, liquid resin will not leak from between both 18 and 1b.
液状樹脂が硬化した後、筒体１８をコイルケー
ス１から取外すことにより、第１図に示すモール
ド型コイルＣが得られる。このコイルＣにおいて
は、樹脂Ｒ中に環状抜止め突起１ａが埋設されて
いるので、筒体１８をコイルケース１から取外す
際、その筒体内周面が樹脂Ｒに付着していること
から筒体１８を強く引張つても樹脂Ｒと共に各構
成部品がコイルケース１から抜けるといつた不具
合を生じることがない。この環状抜止め突起１ａ
による樹脂Ｒ等の抜止め効果は完成後のコイルＣ
においても当然に保持される。またコイルケース
１開口部における、それと樹脂Ｒとの接合面は、
環状漏止め突起１ｂ上面、テーパ面f2、抜止め突
起１ａ下面およびそのテーパ面f1によつて屈折し
ているので、この接合面を通じてコイルケース１
内に雨水等が浸入しにくくなつている。 After the liquid resin has hardened, the cylindrical body 18 is removed from the coil case 1 to obtain the molded coil C shown in FIG. 1. In this coil C, since the annular retaining protrusion 1a is embedded in the resin R, when the cylinder 18 is removed from the coil case 1, the cylinder inner peripheral surface is attached to the resin R, so that the cylinder Even if 18 is strongly pulled, there is no problem such as when each component comes off from the coil case 1 together with the resin R. This annular retaining projection 1a
The effect of preventing resin R etc. from coming off is due to the coil C after completion.
Naturally, it is also held. In addition, the joint surface between the opening of the coil case 1 and the resin R is as follows:
Since it is bent by the upper surface of the annular leakage prevention protrusion 1b, the tapered surface f 2 , the lower surface of the retaining projection 1a and its tapered surface f 1 , the coil case 1 is
It is difficult for rainwater etc. to infiltrate inside.
以上のように本考案に係るコイルケース１は、
その開口部側端部外周面に環状漏止め突起１ｂを
有するので、その突起１ｂに弾性筒体１８を、そ
の弾性を利用して嵌合すると両者１ｂ，１８の接
触面積が少ないことから比較的軽い締付力で筒体
１８が漏止め突起１ｂ外周面全周に亘り密合して
十分なシール圧力が得られる。したがつて、この
ような極めて簡単な手段により両者１ｂ，１８間
から液状樹脂が漏出するといつた不具合を確実に
防止することができる。また漏止め突起１ｂはコ
イルケース１の成形と同時に成形されるので、そ
の突起成形のために特別な工程が不要であるとい
つた利点もある。 As described above, the coil case 1 according to the present invention has
Since it has an annular leak-proof protrusion 1b on the outer circumferential surface of the end on the opening side, when the elastic cylinder 18 is fitted to the protrusion 1b using its elasticity, the contact area between both 1b and 18 is relatively small. With a light tightening force, the cylindrical body 18 is tightly fitted over the entire outer peripheral surface of the leak-proof projection 1b, and sufficient sealing pressure can be obtained. Therefore, by such extremely simple means, problems such as leakage of liquid resin from between the two 1b and 18 can be reliably prevented. Further, since the leakage prevention protrusion 1b is molded at the same time as the coil case 1, there is an advantage that no special process is required for forming the protrusion.
第１図は本考案に係るコイルケースを用いたモ
ールド型コイルの縦断正面図で、第２図−線
で切断した場合を示し、第２図は第１図矢視
図、第３図は第１図矢視部の拡大図、第４図は
分解斜視図、第５図はモールド型コイルの製造方
法を示す縦断正面図である。
Ｃ……モールド型コイル、１……コイルケー
ス、１ｂ……漏止め突起、１８……筒体。
FIG. 1 is a longitudinal sectional front view of a molded coil using a coil case according to the present invention, showing the case taken along the line in FIG. FIG. 1 is an enlarged view of the part seen from the arrow, FIG. 4 is an exploded perspective view, and FIG. 5 is a longitudinal sectional front view showing a method of manufacturing a molded coil. C...Mold type coil, 1...Coil case, 1b...Leakproof protrusion, 18...Cylinder body.
Claims (1)
口部側端部外周面に離脱可能に嵌合された樹脂漏
出防止用弾性筒体１８を通じて液状樹脂を注入さ
れるモールド型コイル用絶縁性コイルケースにお
いて、前記外周面に、前記筒体１８の内周面と密
合する環状漏止め突起１ｂを設けたことを特徴と
するコイルケース。 Insulating material for molded coils in which liquid resin is injected through an elastic cylinder 18 for preventing resin leakage, which has a bottomed cylindrical shape with an opening at one end and is removably fitted to the outer peripheral surface of the end on the opening side. A coil case characterized in that the outer circumferential surface is provided with an annular leak-proof protrusion 1b that fits closely with the inner circumferential surface of the cylindrical body 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5221683U JPS59158319U (en) | 1983-04-08 | 1983-04-08 | coil case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5221683U JPS59158319U (en) | 1983-04-08 | 1983-04-08 | coil case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59158319U JPS59158319U (en) | 1984-10-24 |
| JPH0132341Y2 true JPH0132341Y2 (en) | 1989-10-03 |
Family
ID=30182584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5221683U Granted JPS59158319U (en) | 1983-04-08 | 1983-04-08 | coil case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59158319U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4687271B2 (en) * | 2005-06-23 | 2011-05-25 | 株式会社デンソー | Ignition coil manufacturing method |
-
1983
- 1983-04-08 JP JP5221683U patent/JPS59158319U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59158319U (en) | 1984-10-24 |
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