JPH0712004B2 - Bobbin for coil - Google Patents
Bobbin for coilInfo
- Publication number
- JPH0712004B2 JPH0712004B2 JP63263603A JP26360388A JPH0712004B2 JP H0712004 B2 JPH0712004 B2 JP H0712004B2 JP 63263603 A JP63263603 A JP 63263603A JP 26360388 A JP26360388 A JP 26360388A JP H0712004 B2 JPH0712004 B2 JP H0712004B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- notch
- wall
- bobbin
- collar
- 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
- 238000004804 winding Methods 0.000 description 23
- 239000000463 material Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、内燃機関用点火コイル、フライバックトラン
ス用高圧コイル等の各種コイルを巻装するに適したボビ
ンに関する。Description: TECHNICAL FIELD The present invention relates to a bobbin suitable for winding various coils such as an ignition coil for an internal combustion engine and a high-voltage coil for a flyback transformer.
（従来技術） 従来、この種ボビンのうち、例えば内燃機関用点火コイ
ルのためのボビンにおいては、実開昭57−59420号公報
に示されているように、コイルが巻装されるボビンの複
数の鍔に各鍔毎に順次周方向に180゜ずつ位相をずらせ
て切欠を一つずつ形成して、前記複数の鍔により区分け
される前記コイルの複数のコイル部分のうち、互いに隣
接し合う各一対のコイル部分間の各渡り線を同各一対の
コイル部分間の各鍔の切欠を通してそれぞれ渡すように
したものがある。(Prior Art) Conventionally, among bobbins of this kind, for example, in a bobbin for an ignition coil for an internal combustion engine, as shown in Japanese Utility Model Laid-Open No. 57-59420, a plurality of bobbins around which the coil is wound are provided. Forming a notch on each of the collars by sequentially shifting the phase by 180 ° in the circumferential direction for each collar, and adjoining each other among a plurality of coil portions of the coil divided by the plurality of collars. There is one in which each connecting wire between a pair of coil portions is passed through a notch in each flange between the pair of coil portions.
（発明が解決しようとする課題） しかし、このような構成においては、前記ボビンを形成
する絶縁樹脂材料の熱膨張係数が、前記コイルを形成す
る銅線材料の熱膨張係数よりもかなり大きいために、周
囲温度が変動すると、前記ボビンの切欠の形状が変化し
て当該切欠の内周面角度とこれとの前記渡り線の接触部
分との間にこすれが生じ同渡り線に損傷を招くという不
具合があった。(Problems to be Solved by the Invention) However, in such a configuration, the thermal expansion coefficient of the insulating resin material forming the bobbin is considerably larger than the thermal expansion coefficient of the copper wire material forming the coil. , When the ambient temperature fluctuates, the shape of the notch of the bobbin changes, and rubbing occurs between the inner peripheral surface angle of the notch and the contact portion of the crossover with the notch, which causes damage to the crossover. was there.
そこで、本発明は、このようなことに対処すべく、コイ
ル用ボビンにおいて、ボビンの鍔に形成されるコイルの
渡り線のための切欠の形状が、周囲温度の変動にもかか
わらず、渡り線に損傷を与えるような方向へは殆ど変化
しないようにしようとするものである。Therefore, in order to cope with such a situation, the present invention provides a coil bobbin in which the shape of the notch for the coil connecting wire formed on the collar of the bobbin has a connecting wire despite the fluctuation of the ambient temperature. It tries to make almost no change in the direction that damages the.
（課題を解決するための手段） かかる課題の解決にあたり、本発明の構成上の特徴は、
コイルが巻装される筒体と、この筒体の外周に軸方向に
間隔を付与して突設されて前記コイルを複数のコイル部
分に区分けする複数の鍔とを有するボビンにおいて、前
記複数の鍔に各鍔毎に順次周方向に約180゜ずつ位相を
ずらせて一対の切欠をそれぞれ形成して、前記複数のコ
イル部分のうち互いに隣接し合う各一対のコイル部分間
の各渡り線を同各一対のコイル部分間の各鍔の一方の切
欠を通してそれぞれ渡すようにしたことにある。(Means for Solving the Problems) In solving the problems, the structural features of the present invention are as follows.
A bobbin having a tubular body around which a coil is wound, and a plurality of flanges projecting from the outer periphery of the tubular body at intervals in the axial direction to divide the coil into a plurality of coil portions, A pair of notches are formed on the collar by sequentially shifting the phase by about 180 ° in the circumferential direction, and the crossovers between the pair of adjacent coil portions of the plurality of coil portions are made the same. It is arranged to pass through one notch of each collar between each pair of coil portions.
（作用効果） しかして、このように本発明を構成したことにより、前
記各鍔にそれぞれ形成した一対の切欠が、その熱膨張に
よる形状変化を各鍔毎に互いに相殺し合うので、前記各
鍔の一方の切欠と前記各渡り線との間の熱膨張により円
周方向への相対変動が最小限に抑制される。このため、
前記各鍔の一方の切欠に対する前記各渡り線の接触部の
こすれをほぼなくすことができて同各渡り線にボビンの
熱膨張に伴い生じがちな損傷を未然に防止できる。(Effects) With the above configuration of the present invention, however, the pair of notches formed in each of the collars cancel out the shape change caused by the thermal expansion of each of the notches. Relative fluctuation in the circumferential direction is suppressed to a minimum by thermal expansion between one of the notches and each of the connecting wires. For this reason,
Rubbing of the contact portion of each bridging wire with respect to one notch of each brim can be almost eliminated, and damage to each bridging wire that tends to occur due to thermal expansion of the bobbin can be prevented.
（実施例） 以下、本発明の一実施例を図面により説明すると、第１
図において、符号10はボビンを示し、また、符号20は、
車両用内燃機関に採用される点火コイルを示している。
ボビン10は、絶縁樹脂材料、例えばポリブチレンテレフ
タレート（以下、PBTという）により形成してなるもの
で、このボビン10は、筒体10aと、この筒体10aの外周に
軸方向に所定間隔にて形成した複数の鍔10b〜10kとによ
って構成されている。かかる場合、両鍔10b,10cの各外
径は各鍔10d〜10jの外径よりも小さく、またこれら各鍔
10c〜10jの外径は鍔10kの外径よりも小さくなってい
る。(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.
In the figure, reference numeral 10 indicates a bobbin, and reference numeral 20 indicates
1 shows an ignition coil used in a vehicle internal combustion engine.
The bobbin 10 is made of an insulating resin material such as polybutylene terephthalate (hereinafter referred to as PBT). The bobbin 10 has a cylindrical body 10a and an outer periphery of the cylindrical body 10a at predetermined intervals in the axial direction. It is composed of a plurality of collars 10b to 10k formed. In such a case, the outer diameters of both collars 10b and 10c are smaller than the outer diameters of collars 10d to 10j, and
The outer diameter of 10c to 10j is smaller than the outer diameter of the collar 10k.
各鍔の構成につき両鍔10f,10gを例にとって説明する
と、鍔10fには、上側切欠13a及び下側切欠13bが、第２
図に示すごとく、中心線Lh（第１図及び第２図参照）を
基準として互いに線対称な形状を有するように、中止線
Lpの図示左側にて左方へ開口すべく形成されている。上
側切欠13aは、中心線Lhに平行に形成した半径方向に沿
う下側内壁13a1と、この下側内壁13a1に対し半径方向へ
上方に向け末広がり状に形成した上側内壁13a2とを有し
ており、この上側切欠13aの底壁は筒体10aの外周壁10a1
に一致している。一方、下側切欠13bは、中心線Lhに平
行に形成した半径方向に沿う上側内壁13b1と、この上側
内壁13b1に対し半径方向へ下方に向け末広がり状に形成
した下側内壁13b2とを有しており、この下側切欠13bの
底壁も、上側切欠13aの場合と同様に筒体10aの外周壁10
a1に一致している。なお、両中心線Lh,Lpは筒体10aの軸
心Ｏを通り互いに直交する。The structure of each flange will be described with reference to both flanges 10f and 10g as an example. The flange 10f has an upper cutout 13a and a lower cutout 13b.
As shown in the figure, the stop line should have a shape symmetrical with respect to the center line Lh (see FIGS. 1 and 2).
It is formed to open to the left on the left side of Lp in the drawing. The upper notch 13a is closed and the lower inner wall 13a 1 along a radial direction which is formed in parallel to the center line Lh, an upper inner wall 13a 2 formed in the flared upward in the radial direction with respect to the lower inner wall 13a 1 The bottom wall of the upper cutout 13a is the outer peripheral wall 10a 1 of the cylindrical body 10a.
Is consistent with. On the other hand, the lower notch 13b includes an upper inner wall 13b 1 along a radial direction formed in parallel with the center line Lh, a lower inner wall 13b 2 formed in the flared downward in the radial direction with respect to the upper inner wall 13b 1 The bottom wall of the lower cutout 13b also has an outer peripheral wall 10 of the cylindrical body 10a as in the case of the upper cutout 13a.
Matches a 1 . Both center lines Lh and Lp pass through the axis O of the cylindrical body 10a and are orthogonal to each other.
鍔10gには、上側切欠14a及び下側切欠14bが、第１図及
び第３図に示すごとく、中心線Lhを基準として互いに線
対称な形状を有するように、中心線Lpの図示右側にて右
方へ開口すべく形成されている。上側切欠14aは、中心
線Lhに平行に形成した半径方向に沿う下側内壁14a1と、
この下側内壁14a1に対し半径方向へ上方に向け末広がり
状に形成した上側内壁14a2とを有しており、この上側切
欠14aの底壁は筒体10aの外周壁10a1に一致している。一
方、下側切欠14bは、中心線Lhに平行に形成した半径方
向に沿う上側内壁14b1と、この上側内壁14b1に対し半径
方向へ下方に向け末広がり状に形成した下側内壁14b2と
を有しており、この下側切欠14bの底壁も、上側切欠14a
の場合と同様に筒体10aの外周壁10a1に一致している。
従って、両切欠14a,14bは両切欠13a,13bに対し中心線Lp
を基準として線対称な形状となっている。On the collar 10g, the upper notch 14a and the lower notch 14b are formed on the right side of the center line Lp so as to have shapes symmetrical to each other with respect to the center line Lh as shown in FIGS. 1 and 3. It is formed to open to the right. The upper notch 14a, a lower inner wall 14a 1 along the radial direction formed parallel to the center line Lh,
The relative lower inner wall 14a 1 has an upper inner wall 14a 2 formed in the flared upwardly radially, the bottom wall of the upper notch 14a is coincident with the outer peripheral wall 10a 1 of the cylindrical body 10a There is. On the other hand, the lower notch 14b includes an upper inner wall 14b 1 along a radial direction formed in parallel with the center line Lh, a lower inner wall 14b 2 formed in the flared downward in the radial direction with respect to the upper inner wall 14b 1 The bottom wall of this lower cutout 14b also has an upper cutout 14a.
Similar to the case, the outer peripheral wall 10a 1 of the cylindrical body 10a is matched.
Therefore, the two cutouts 14a, 14b are separated from the two cutouts 13a, 13b by the center line Lp.
The line is symmetrical with respect to.
また、各鍔10d,10h,10jは、鍔10fと同様の構成を有し、
また鍔10bは鍔10fとは外径を異にするのみで、この鍔10
fと実質的に同様の構成を有している。これら各鍔10b,1
0d,10h,10jには、鍔10fの上側切欠13a及び下側切欠13b
にそれぞれ対応する上側切欠及び下側切欠が上側切欠13
a及び下側切欠13dと同様の形状にてそれぞれ形成されて
いる。一方、各鍔10e,10iは、鍔10gと同様の構成を有
し、また鍔10cは鍔10gとは外径を異にするのみでこの鍔
10gと実質的に同様の構成を有している。これら各鍔10
c,10e,10g,10iには、鍔10gの上側切欠13a及び下側切欠1
3bにそれぞれ対応する上側切欠12a,14a,15a及び下側切
欠12b,14b,15b（第１図参照）が上側切欠13a及び下側切
欠13bと同様の形状にてそれぞれ形成されている。Further, each of the collars 10d, 10h, 10j has the same configuration as the collar 10f,
The collar 10b is different from the collar 10f only in the outer diameter.
It has substantially the same configuration as f. Each of these Tsuba 10b, 1
0d, 10h, and 10j have an upper notch 13a and a lower notch 13b of the collar 10f.
The upper notch and the lower notch corresponding respectively to the upper notch 13
It is formed in the same shape as the a and the lower cutout 13d. On the other hand, each of the collars 10e and 10i has the same structure as the collar 10g, and the collar 10c is different from the collar 10g only in the outer diameter.
It has substantially the same structure as 10 g. Each of these Tsuba 10
c, 10e, 10g, 10i have upper notch 13a and lower notch 1 of collar 10g.
Upper notches 12a, 14a, 15a and lower notches 12b, 14b, 15b (see FIG. 1) respectively corresponding to 3b are formed in the same shape as the upper notch 13a and the lower notch 13b.
点火コイル20は、筒体10aの第１図にて図示左端部に設
けた突起10a2から鍔10kの突起10k1にかけて、各鍔10b〜
10jを介し筒体10aの外周壁10a1に一本の銅線材料を順次
巻装して形成されている。かかる場合、点火コイル20
は、両鍔10b,10c間、両鍔10c,10d間、両鍔10d,10e間、
両鍔10e,10f間，・・・，及び両鍔10j,10k間における各
巻装部分にてそれぞれコイル部分20a,20b,20c,20d,・・
・，及び20iを構成する。The ignition coil 20, over the projections 10a 2 provided on the illustrated left end in FIG. 1 of the cylindrical body 10a in the projection 10k 1 of the flange 10k, the flanges 10b~
One copper wire material is sequentially wound around the outer peripheral wall 10a 1 of the cylindrical body 10a via 10j. In such a case, the ignition coil 20
Between both collars 10b and 10c, between both collars 10c and 10d, between both collars 10d and 10e,
Coil portions 20a, 20b, 20c, 20d, ... between the collars 10e, 10f, ..., and the winding portions between the collars 10j, 10k, respectively.
., And 20i.
ここで、各コイル部分20a〜20iの巻装方法及び両隣接コ
イル部分間の銅線材料の渡し方について各コイル部分20
d,20e,20fを例にとって説明する。コイル部分20dは、鍔
10eの第１図にて図示右側表面（以下、背面という）近
傍から筒体10aの外表面10a1上に前記銅線材料の中間部
位を巻始め、以後、同銅線材料を両鍔10e,10f間にて繰
返し層状に所定巻装高さまで巻装し、この巻装を鍔10f
の第１図にて図示左側表面（以下、前面という）近傍に
て終了する。また、このコイル部分20dと同様にして、
コイル部分20eが両鍔10f,10g間にて巻装されるとともに
コイル部分20fが両鍔10g,10h間にて巻装される。Here, regarding the winding method of each coil portion 20a to 20i and the method of passing the copper wire material between both adjacent coil portions, each coil portion 20
Description will be made by taking d, 20e, and 20f as an example. The coil portion 20d is a tsuba.
In Fig. 1 of 10e, an intermediate portion of the copper wire material is started to be wound on the outer surface 10a 1 of the cylindrical body 10a from the vicinity of the right surface (hereinafter referred to as the back surface) shown in Fig. It is repeatedly wound in layers between 10f up to a predetermined winding height, and this winding is used for the collar 10f.
In FIG. 1, the process ends near the surface on the left side of the drawing (hereinafter referred to as the front face). Also, similar to this coil portion 20d,
The coil portion 20e is wound between the collars 10f and 10g, and the coil portion 20f is wound between the collars 10g and 10h.
かかる場合、コイル部分20dの巻終端部20de（第２図参
照）とコイル部分20eの巻始端部20es（第２図参照）と
は、鍔10fにおける上側切欠13aの下側内壁13a1の前縁角
部上の点Ｐ（第２図参照）から上側内壁13a2の背縁角部
上の点ｑ（第２図参照）にかけて渡る前記銅線材料の一
部（以下、渡り線Ldeという）により連続的に接続され
ている。一方、コイル部分20eの巻終端部20ee（第３図
参照）とコイル部分20fの巻始端部20fs（第３図参照）
とは、鍔10gにおける下側切欠14bの上側内壁14b1の前縁
角部上の点ｒ（第３図参照）から下側内壁14b2の背縁角
部上の点ｓ（第３図参照）にかけて渡る前記銅線材料の
一部（以下、渡り線Lefという）により連続的に接続さ
れている。In this case, the winding end portion 20de (see FIG. 2) of the coil portion 20d and the winding start end portion 20es (see FIG. 2) of the coil portion 20e are the front edge of the lower inner wall 13a 1 of the upper cutout 13a in the collar 10f. By a part of the copper wire material (hereinafter referred to as a crossover Lde) extending from a point P on the corner (see FIG. 2) to a point q on the back edge corner of the upper inner wall 13a 2 (see FIG. 2) Connected continuously. On the other hand, the winding end 20ee of the coil portion 20e (see FIG. 3) and the winding start end 20fs of the coil portion 20f (see FIG. 3)
Is the point r (see FIG. 3) on the front edge corner of the upper inner wall 14b 1 of the lower notch 14b in the collar 10g to the point s (see FIG. 3) on the back edge corner of the lower inner wall 14b 2 . ) Is continuously connected by a part of the copper wire material (hereinafter referred to as a crossover Lef).
また、残余の各コイル部分20a〜20c及び20g〜20iについ
ても、上述した各コイル部分20d〜20fと同様にしてその
各両側の鍔間に巻装されている。かかる場合、コイル部
分20aの巻終端部とコイル部分20bの巻始端部との間、コ
イル部分20cの巻終端部とコイル部分20dの巻始端部との
間、及びコイル部分20gの巻終端部とコイル部20hの巻終
端部との間は、両コイル部分20e,20f間の渡り線Lefによ
る場合と同様に、第１図に示すごとく、各鍔10c,10e及
び10iの下側切欠11b,12b及び15bを介し各渡り線Lab,Lcd
及びLghによりそれぞれ連続的に接続されている。一
方、コイル部分20bの巻終端部とコイル部分20cの巻始端
部との間、コイル部分20fの巻終端部とコイル部分20gの
巻始端部との間、及びコイル部分20hの巻終端部とコイ
ル部分20iの巻始端部との間は、両コイル部分20d,20e間
の渡り線Ldeによる場合と同様に、各鍔10d,10h及び10j
の上側切欠を介し各渡り線によりそれぞれ連続的に接続
されている。Further, the remaining coil portions 20a to 20c and 20g to 20i are also wound between the collars on both sides thereof in the same manner as the coil portions 20d to 20f described above. In such a case, between the winding end portion of the coil portion 20a and the winding start end portion of the coil portion 20b, between the winding end portion of the coil portion 20c and the winding start end portion of the coil portion 20d, and the winding end portion of the coil portion 20g. Similar to the case of the connecting wire Lef between the coil portions 20e and 20f, the lower end notches 11b and 12b of the collars 10c, 10e and 10i are provided between the coil portion 20h and the winding end portion, as in the case of the connecting wire Lef between the coil portions 20e and 20f. Each crossing line Lab, Lcd via 15b
And Lgh are connected continuously. On the other hand, between the winding end portion of the coil portion 20b and the winding start end portion of the coil portion 20c, between the winding end portion of the coil portion 20f and the winding start end portion of the coil portion 20g, and between the winding end portion of the coil portion 20h and the coil. Similar to the case of the crossover Lde between the coil portions 20d and 20e, between the winding start end portion of the portion 20i and the collars 10d, 10h and 10j.
Through the upper cutout of the above, and are continuously connected by each crossover.
以上のように構成した本実施例において、コイル20を巻
装したボビン10の形状が、周囲温度の変動に伴うその膨
張度合の変化に応じてどのように変化するかにつき、従
来のようにボビン10の各鍔の切欠を単一（第５図参照）
にした場合と比較して説明する。かかる場合、従来のボ
ビン13′の各鍔の切欠は、各鍔毎に順次180゜ずつ位相
を異にして形成されているものとする。また、従来のボ
ビン10′の各鍔の切欠の形状はボビン10の各鍔の切欠の
それと同様である。因みに、第５図で例示する従来のボ
ビン10′の鍔10f′がボビン10の鍔10f（第２図及び第４
図参照）に対応し、また、鍔10f′の切欠10a′、下側内
壁13a1′及び上側内壁13a2′が鍔10fの切欠13a、下側内
壁13a1及び上側内壁13a2にそれぞれ対応するものとす
る。なお、ボビン10′のその他の構成はボビン10と同様
とする。In the present embodiment configured as described above, how the shape of the bobbin 10 around which the coil 20 is wound changes in accordance with the change in the expansion degree of the bobbin according to the change in the ambient temperature. A single notch on each tsuba (see Fig. 5)
The description will be made in comparison with the case of setting. In such a case, it is assumed that the notches of the collars of the conventional bobbin 13 'are sequentially formed 180 degrees out of phase with each other. Further, the shape of the notch of each collar of the conventional bobbin 10 'is the same as that of the notch of each collar of the bobbin 10. Incidentally, the collar 10f 'of the conventional bobbin 10' illustrated in FIG. 5 is the collar 10f of the bobbin 10 (see FIGS. 2 and 4).
Corresponding to FIG see), also 'cut-out 10a' of the flange 10f, corresponding respectively lower inner wall 13 a1 'and the upper inner wall 13 a2' notch 13a of the flange 10f, the lower inner wall 13a 1 and the upper inner wall 13a 2 I shall. The other configuration of the bobbin 10 'is similar to that of the bobbin 10.
まず、従来のボビン10′の形状が、その周囲温度の変動
に伴う膨張度合の変化に応じ、どのように変化するかに
ついて述べる。ボビン10′を形成する絶縁樹脂材料の熱
膨張係数は、点火コイル20を形成する銅線材料の熱膨張
係数よりもかなり大きいため、周囲温度が高くなると、
ボビン10′が点火コイル20に比べて大きく膨張する。か
かる場合、鍔10f′を例にとると、この鍔10f′の外周面
並びに切欠13a′の下側内壁13a1′、上側内壁13a2′及
び底壁が、周囲温度の上昇に応じ、第５図にて図示実線
の位置から図示二点鎖線の位置に移動する。First, how the shape of the conventional bobbin 10 'changes in accordance with the change in the expansion degree due to the change in the ambient temperature will be described. Since the thermal expansion coefficient of the insulating resin material forming the bobbin 10 'is considerably larger than the thermal expansion coefficient of the copper wire material forming the ignition coil 20, when the ambient temperature becomes high,
The bobbin 10 'expands more than the ignition coil 20. In such a case, taking the collar 10f 'as an example, the outer peripheral surface of the collar 10f' and the lower inner wall 13a1 ', the upper inner wall 13a2 ' and the bottom wall of the notch 13a 'are moved to the fifth In the figure, it moves from the position shown by the solid line to the position shown by the chain double-dashed line in the figure.
換言すれば、周囲温度の上昇に応じ、切欠13a′がその
周方向開口幅を狭くしながら半径方向へ外方に向け膨張
するので、両コイル部分20d、20e間の渡り線Ldeがその
渡り始め部分（即ち、コイル部分20dの巻終端部）にて
点Ｐの位置から点Ｐ′の位置まで伸長されることとな
る。従って、ボビン10′の周囲温度の高低が繰返えされ
ると、点Ｐ′と点Ｐとの間にて渡り線Ldeの渡り始め部
分が切欠13a′の下側内壁13a1′の前縁角部に沿い繰返
し伸長されながら移動して同前縁角部によりこすられて
損傷する。In other words, as the ambient temperature rises, the notch 13a 'expands radially outward while narrowing its circumferential opening width, so that the crossover Lde between both coil portions 20d, 20e begins to cross over. At the portion (that is, the winding end portion of the coil portion 20d), it is extended from the position of the point P to the position of the point P '. Thus, 'when the level of ambient temperature is Kukaee, point P' bobbin 10 the leading edge angle of the 'lower inner wall 13a 1 of the' crossover start portion of the connecting wire Lde in between the point P is cut-out 13a It moves while being repeatedly stretched along the part and is rubbed and damaged by the front edge corner part.
一方、本実施例におけるボビン10を形成する絶縁樹脂材
料の熱膨張係数も、ボビン10′の場合と同様に、点火コ
イル20を形成する銅線材料の熱膨張係数よりもかなり大
きいため、周囲温度が高くなると、ボヒン10が点火コイ
ル20に比べ大きく膨張する。かかる場合、鍔10f′に対
応する鍔10f（第４図参照）を例にすると、この鍔10fの
外周面、上側切欠13aの上側内壁13a2及び底壁、並びに
下側切欠13bの下側内壁13b2及び底壁が、周囲温度の上
昇に応じ、第４図にて図示実線の位置から図示二点鎖線
の位置に移動する。On the other hand, the thermal expansion coefficient of the insulating resin material forming the bobbin 10 in the present embodiment is also much larger than the thermal expansion coefficient of the copper wire material forming the ignition coil 20 as in the case of the bobbin 10 ', so that the ambient temperature Becomes higher, the Bohin 10 expands more than the ignition coil 20. In such a case, when an example flange 10f (see FIG. 4) corresponding to the flange 10f ', the outer peripheral surface, an upper inner wall 13a 2 and the bottom wall of the upper cutout 13a, and the lower inner wall of the lower notch 13b of the flange 10f 13b 2 and the bottom wall move from the position indicated by the solid line in FIG. 4 to the position indicated by the alternate long and two short dashes line in FIG. 4 in response to an increase in the ambient temperature.
換言すれば、周囲温度の上昇に応じ、鍔10fの上側切欠1
3aの上側内壁13a2及び下側切欠13bの下側内壁13b2は、
鍔10f′の切欠13a′の上側内壁13a2′と同様に移動する
が、上側切欠13aの下側内壁13a1及び下側切欠13bの上側
内壁13b1は、切欠13a′の下側内壁13a1′とは異なり、
半径方向に向け外方へそのまま伸長するのみで、上側切
欠13a及び下側切欠13bの各開口幅を狭くする方向には殆
ど移動しない。従って、ボビン10の周囲温度の高低が繰
返されても、渡り線Lde（第４図参照）がその渡り始め
部分にて切欠13aの下側内壁13a1の前縁角部に沿いこす
られることなく繰返し移動するのみとなるので、渡り線
Ldeの渡り始め部分が損傷することはない。かかる場
合、点火コイル20も半径方向に伸縮するので、渡り線Ld
eの渡り始め部分の上述のような繰返し移動量は更に減
少する。In other words, as the ambient temperature rises, the upper notch 1 of the collar 10f
The upper inner wall 13a 2 of 3a and the lower inner wall 13b 2 of the lower notch 13b are
The upper interior wall 13 a2 of the flange 10f 'of the notch 13a''to move in the same manner as is the upper inner wall 13b 1 under an upper notch 13a side inner wall 13a 1 and the lower notch 13b is notched 13a' below the inner wall of 13 a1 'Unlike,
It only extends outward in the radial direction as it is, and it hardly moves in the direction in which the opening widths of the upper notch 13a and the lower notch 13b are narrowed. Therefore, even if the ambient temperature of the bobbin 10 is repeated, the crossover Lde (see FIG. 4) does not rub along the front edge corner of the lower inner wall 13a 1 of the cutout 13a at the crossover start portion. Since it only moves repeatedly, the crossover
The starting part of the Lde will not be damaged. In this case, since the ignition coil 20 also expands and contracts in the radial direction, the crossover Ld
The above-mentioned repetitive movement amount of the transition start portion of e is further reduced.
ここで、両鍔10f,10f′間において上述のような作用効
果上の差異が生じる根拠について説明する。Here, the reason why the above-mentioned difference in operational effect occurs between the collars 10f and 10f 'will be described.
（１）鍔10fにおいては、鍔10f′とは異なり、二つの切
欠（上側切欠13a及び下側切欠13b）が形成されてるの
で、上側切欠13aの下側内壁13a1と下側切欠13bの上側内
壁13b1との間で鍔10fの外周面が形成する円弧長ｌ（第
４図参照）が、鍔10f′の切欠13a′の開口部分を除く外
周面が形成する円弧長ｌ′（第５図参照）よりも著しく
短くなる。従って、上側切欠13aの下側内壁13a1上のＰ
点が鍔10fの膨張に応じて上側切欠13a内に向け円周方向
へ移動する長さは、切欠13a′の下側内壁13a1′上の点
Ｐが鍔10f′の膨張に応じて切欠13a′内に向け円周方向
へ移動する長さに比べて著しく短くなる。(1) In the flange 10f, unlike the flange 10f ', the upper two notches (upper cutouts 13a and lower notches 13b) so is formed, the lower inner wall 13a 1 of the upper notch 13a and a lower notch 13b arc length outer peripheral surface of the flange 10f is formed between the inner wall 13b 1 l (see FIG. 4) is arc length l of the outer peripheral surface except for the opening of the 'cut-out 13a' of the flange 10f is formed '(fifth (See figure) Therefore, P on the lower inner wall 13a 1 of the upper notch 13a
Notch 13a in response to the expansion of the length of the point is moved in the circumferential direction toward the inside of the upper cutout 13a in response to the expansion of the flange 10f is a notch 13a P is flange 10f terms of 'lower inner wall 13 a1 of' on ' It will be significantly shorter than the length of movement in the circumferential direction toward the inside.
（２）さらに、鍔10fの上側切欠13aと下側切欠13bと
が、中心線Lhを基準として線対称な形状に形成されてい
るので、上側切欠13aの下側内壁13a1及び下側切欠13bの
下側内壁13b1の膨張に伴う移動長が互いにほぼ相殺され
ることとなる。従って、下側内壁13a1及び上側内壁13b1
は周囲温度の変動時にも円周方向に移動することなく半
径方向にのみ伸縮することとなる。(2) Further, since the upper notch 13a and the lower notch 13b of the collar 10f are formed in line-symmetrical shapes with respect to the center line Lh, the lower inner wall 13a 1 and the lower notch 13b of the upper notch 13a are formed. The movement lengths due to the expansion of the lower inner wall 13b 1 cancel each other out. Therefore, the lower inner wall 13a 1 and the upper inner wall 13b 1
Does not move in the circumferential direction even when the ambient temperature changes, and expands and contracts only in the radial direction.
なお、上記（１）（２）の根拠により上述の作用効果上
の差異が生じることは実験によっても確認済みである。
また、渡り線Ldeを除く残余の各渡り線についても上述
と同様の作用効果を確保し得る。In addition, it has been confirmed through experiments that the above-mentioned differences in action and effect are caused by the grounds (1) and (2).
Further, the same operational effects as described above can be secured for each of the remaining crossover lines except the crossover line Lde.
また、本発明の実施にあたっては、ボビン10の各鍔の一
対の切欠のうち前記実施例にて渡り線を渡すために使用
しなかった残りの各切欠を、前記実施例とは逆方向への
コイルの巻装にあたり使用するようにしてもよい。Further, in the practice of the present invention, among the pair of notches of each collar of the bobbin 10, the remaining notches not used for passing the crossover wire in the above-mentioned embodiment, the opposite direction to the above-mentioned embodiment. It may be used for winding the coil.
また、本発明の実施にあたっては、車両用内燃機関の点
火コイル用ボビンに限ることなく、フライバックトラン
ス用高圧コイルのためのボビン等、各種ボビンに本発明
を適用して実施してもよい。In implementing the present invention, the present invention is not limited to the ignition coil bobbin of the vehicle internal combustion engine, and the present invention may be applied to various bobbins such as a bobbin for a high-voltage coil for a flyback transformer.
第１図は本発明の係るボビンに点火コイルを巻装した斜
視図、第２図は第１図におけるボビンを第１図にて図示
左方から見た場合の一鍔の左側面図、第３図は同他の鍔
の左側面図、第４図は第２図における鍔の熱膨張による
変化を示す図、及び第５図は従来の鍔の熱膨張による変
化を示す図である。 符号の説明 10……ボビン、10a……筒体、10b〜10j……鍔、11a,11
b,12a,12b,13a,13b,14a,14b,15a,15b……切欠、20……
点火コイル、20a〜20i……コイル部分、Lab,Lcd,Lde,Le
f,Lgh……渡り線。FIG. 1 is a perspective view of an ignition coil wound around a bobbin according to the present invention, and FIG. 2 is a left side view of one collar when the bobbin in FIG. 1 is viewed from the left in FIG. FIG. 3 is a left side view of the other flange, FIG. 4 is a view showing a change due to thermal expansion of the flange in FIG. 2, and FIG. 5 is a view showing a change due to thermal expansion of a conventional flange. Explanation of symbols 10 …… bobbin, 10a …… cylindrical body, 10b to 10j …… tsuba, 11a, 11
b, 12a, 12b, 13a, 13b, 14a, 14b, 15a, 15b ...... notch, 20 ......
Ignition coil, 20a to 20i …… Coil part, Lab, Lcd, Lde, Le
f, Lgh ... Crossover.
Claims (1)
周に軸方向に間隔を付与して突設されて前記コイルを複
数のコイル部分に区分けする複数の鍔とを有するボビン
において、前記複数の鍔に各鍔毎に順次周方向に約180
゜ずつ位相をずらせて一対の切欠をそれぞれ形成して、
前記複数のコイル部分のうち互いに隣接し合う各一対の
コイル部分間の各渡り線を同各一対のコイル部分間の各
鍔の一方の切欠を通してそれぞれ渡すようにしたことを
特徴とするコイル用ボビン。1. A bobbin having a tubular body around which a coil is wound, and a plurality of flanges projecting from the outer periphery of the tubular body at intervals in the axial direction to divide the coil into a plurality of coil portions. In the above, the plurality of collars are sequentially arranged in the circumferential direction for about 180
Form a pair of notches by shifting the phase by °,
A bobbin for a coil, wherein each connecting wire between a pair of adjacent coil portions among the plurality of coil portions is passed through one notch of each collar between the pair of coil portions. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63263603A JPH0712004B2 (en) | 1988-10-19 | 1988-10-19 | Bobbin for coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63263603A JPH0712004B2 (en) | 1988-10-19 | 1988-10-19 | Bobbin for coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02110905A JPH02110905A (en) | 1990-04-24 |
| JPH0712004B2 true JPH0712004B2 (en) | 1995-02-08 |
Family
ID=17391836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63263603A Expired - Lifetime JPH0712004B2 (en) | 1988-10-19 | 1988-10-19 | Bobbin for coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712004B2 (en) |
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| WO2010038836A1 (en) | 2008-10-03 | 2010-04-08 | 富士フイルム株式会社 | Dispersed composition, polymerizable composition, light shielding color filter, solid-state imaging element, liquid crystal display device, wafer-level lens, and imaging unit |
| WO2010082554A1 (en) | 2009-01-15 | 2010-07-22 | 富士フイルム株式会社 | Novel compound, polymerizable composition, color filter and process for produciton thereof, solid-state imaging element, and lithographic printing original plate |
| EP2221665A2 (en) | 2009-02-19 | 2010-08-25 | Fujifilm Corporation | Dispersion composition, photosensitive resin composition for light- shielding color filter, light-shielding color filter, method of producing the same, and solid-state image sensor having the color filter |
| WO2011062198A1 (en) | 2009-11-20 | 2011-05-26 | 富士フイルム株式会社 | Dispersion composition, photosensitive resin composition, and solid-state image pickup element |
| EP2402818A1 (en) | 2010-06-30 | 2012-01-04 | FUJIFILM Corporation | Photosensitive composition, pattern forming material, and photosensitive film, pattern forming method, pattern film, low refractive index film, optical device and solid-state imaging device each using the same |
| WO2013099948A1 (en) | 2011-12-28 | 2013-07-04 | 富士フイルム株式会社 | Optical member set and solid-state image sensor using same |
| WO2014034813A1 (en) | 2012-08-31 | 2014-03-06 | 富士フイルム株式会社 | Dispersion composition, and curable composition, transparent film, microlens and solid-state imaging element using same, and polymer compound |
| WO2014034815A1 (en) | 2012-08-31 | 2014-03-06 | 富士フイルム株式会社 | Dispersion composition, and curable composition, transparent film, microlens and solid-state imaging element using same |
| WO2014034814A1 (en) | 2012-08-31 | 2014-03-06 | 富士フイルム株式会社 | Dispersion composition, and curable composition, transparent film, microlens and solid-state imaging element using same |
| EP3124548A1 (en) | 2012-08-31 | 2017-02-01 | FUJIFILM Corporation | Dispersion composition, curable composition using the same, transparent film, microlens, and solid-state imaging device |
| EP3135733A1 (en) | 2012-08-31 | 2017-03-01 | FUJIFILM Corporation | Dispersion composition, and curable composition, transparent film, microlens and solid-state imaging element using same |
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| Publication number | Publication date |
|---|---|
| JPH02110905A (en) | 1990-04-24 |
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