JP2006328990A - Ignition coil for internal combustion engine - Google Patents

Ignition coil for internal combustion engine Download PDF

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JP2006328990A
JP2006328990A JP2005150419A JP2005150419A JP2006328990A JP 2006328990 A JP2006328990 A JP 2006328990A JP 2005150419 A JP2005150419 A JP 2005150419A JP 2005150419 A JP2005150419 A JP 2005150419A JP 2006328990 A JP2006328990 A JP 2006328990A
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igniter
internal combustion
combustion engine
ignition coil
positioning jig
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JP2005150419A
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Japanese (ja)
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Kokichi Yamada
康▲吉▼ 山田
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Hanshin Electric Co Ltd
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Hanshin Electric Co Ltd
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Priority to JP2005150419A priority Critical patent/JP2006328990A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an ignition coil for an internal combustion engine capable of being accurately positioned, without applying excessive stress to an igniter. <P>SOLUTION: This ignition coil for the internal combustion engine stores the igniter for intermitting a primary current in an auxiliary storage part of an insulating case, and has a pair of arm members for holding the igniter and regulating a lateral position, and can be thereby accurately positioned without applying the excessive stress to the igniter. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、内燃機関用点火コイルに使用されるイグナイタを適正位置に過剰な応力を与えることなく設定することのできる内燃機関用点火コイルに関するものである。   The present invention relates to an ignition coil for an internal combustion engine that can set an igniter used for the ignition coil for an internal combustion engine at an appropriate position without applying excessive stress.

一般に、内燃機関における点火装置に使用されるイグナイタ15は、その機能である、一次電流の通電及び遮断の為に、点火コイルの一次巻線1及び、車両に設置された駆動装置との接続端子2に電気的に接続されて使用される。この電気的接続に際し、例えば、図12、13に示すように、イグナイタ15の正確な位置決めが必要であり、内燃機関用点火コイル3は、本体ケース4に袋状の補助収容部5を設け、該補助収容部5に設けたリブ状の突起6によって囲まれるその間にイグナイタ15を配置し、接続端子2との接続位置が一定になるように配慮されている。   In general, an igniter 15 used in an ignition device in an internal combustion engine has a function of connecting a primary winding 1 of an ignition coil and a drive terminal installed in a vehicle for energization and interruption of a primary current. 2 is used by being electrically connected to 2. For this electrical connection, for example, as shown in FIGS. 12 and 13, it is necessary to accurately position the igniter 15, and the internal combustion engine ignition coil 3 is provided with a bag-like auxiliary housing portion 5 in the main body case 4. An igniter 15 is disposed between the rib-like projections 6 provided in the auxiliary accommodating portion 5 so that the connection position with the connection terminal 2 is constant.

しかし、イグナイタ15は一般的な半導体パッケージを使用しており、外形寸法精度はあまり良くない。
そのため、イグナイタの外径寸法が設定値より大きい場合には、イグナイタに過剰な応力がかかり、イグナイタ15の耐久性に悪影響を及ぼす。そのため、従来は上記誤差を吸収できるようにリブ状の突起の高さ等を設定しており、イグナイタを正確に位置決めすることができなかった。
However, the igniter 15 uses a general semiconductor package, and the external dimension accuracy is not so good.
Therefore, when the outer diameter of the igniter is larger than the set value, excessive stress is applied to the igniter, which adversely affects the durability of the igniter 15. For this reason, conventionally, the height of the rib-like projections is set so as to absorb the above error, and the igniter cannot be positioned accurately.

この発明は、上記に鑑み提案されたもので、補助収容部内に収納されるイグナイタに寸法誤差が存在しても、過度な応力を与えたりすることなく精度よく位置決めすることのできる内燃機関用点火コイルを提供することを目的とするものである。   The present invention has been proposed in view of the above, and an ignition for an internal combustion engine that can be accurately positioned without applying excessive stress even if there is a dimensional error in the igniter housed in the auxiliary housing portion. The object is to provide a coil.

上記目的を達成する為に、本発明の内燃機関用点火コイルは、一次電流を断続するイグナイタを絶縁ケースの補助収容部に収容した内燃機関用点火コイルであって、前記イグナイタを保持し左右位置を規制する一対のアーム部材を備えたことを特徴としている。   In order to achieve the above object, an ignition coil for an internal combustion engine according to the present invention is an internal combustion engine ignition coil in which an igniter that interrupts primary current is housed in an auxiliary housing portion of an insulating case, and holds the igniter in a left-right position. A pair of arm members for regulating the movement.

また、本発明において、前記アーム部材は、絶縁ケースの補助収容部内壁面から立設されたことを特徴とする。   In the present invention, the arm member is erected from the inner wall surface of the auxiliary housing portion of the insulating case.

また、本発明において、前記アーム部材は補助収容部内に装着可能な位置決め治具から立設されたことを特徴とする。   In the present invention, the arm member is erected from a positioning jig that can be mounted in the auxiliary housing portion.

また、本発明において、前記位置決め治具はイグナイタの底面側を規制する突起を有することを特徴とする。   In the present invention, the positioning jig has a protrusion for regulating the bottom side of the igniter.

この発明は上記した構成からなるので、以下に説明するような効果を奏することができる。   Since this invention consists of an above-described structure, there can exist an effect which is demonstrated below.

本発明では、一次電流を断続するイグナイタを絶縁ケースの補助収容部に収容した内燃機関用点火コイルであって、前記イグナイタを保持し左右位置を規制する一対のアーム部材を備えたので、イグナイタに過剰な応力が加わることなく、精度よく位置決めができる。また、本発明では、前記アーム部材は、補助収容部内に装着可能な位置決め治具から立設されたので、イグナイタを予めこの位置決め治具に取り付けた後に補助収容部内に装着することができるので、取り付け操作が容易である。また、本発明では、前記位置決め治具は、イグナイタの底面側を規制する突起を有するので、イグナイタの左右位置だけでなく、上下位置も精度よく位置決めすることができる。   In the present invention, the ignition coil for an internal combustion engine in which an igniter that interrupts the primary current is accommodated in the auxiliary accommodating portion of the insulating case, and includes the pair of arm members that hold the igniter and restrict the left and right positions. Positioning can be performed accurately without applying excessive stress. Further, in the present invention, since the arm member is erected from a positioning jig that can be mounted in the auxiliary accommodating portion, it can be mounted in the auxiliary accommodating portion after the igniter is previously attached to the positioning jig, Installation operation is easy. In the present invention, since the positioning jig has a protrusion for regulating the bottom surface side of the igniter, not only the horizontal position of the igniter but also the vertical position can be accurately positioned.

内燃機関用点火コイルに装着するイグナイタを一対のアーム部材で、保持し左右位置を規制するので、イグナイタに過剰な応力を発生させることなく、位置決めができ、内燃機関用点火コイルの信頼性を向上するという目的が達成できる。   The igniter to be mounted on the ignition coil for the internal combustion engine is held by a pair of arm members and the left and right positions are regulated so that positioning can be performed without generating excessive stress on the igniter and the reliability of the ignition coil for the internal combustion engine is improved. You can achieve your goal.

以下、一実施の形態を示す図面に基づいて本発明を詳細に説明する。図1は、本発明に係る内燃機関用点火コイルの一例を示す平面図、図2は本発明の内燃機関用点火コイルの縦断面図である。ここで、内燃機関用点火コイル10は、絶縁ケース11内に珪素鋼板を積層して形成した鉄心12を使用した磁気回路に一次コイル13及び二次コイル14を巻回し、前記一次コイル13に流れる電流を絶縁ケース11の補助収容部17に収容したイグナイタ15で断続することにより電磁誘導を起し、それにより発生した逆起電力を前記二次コイル14により昇圧し高電圧を発生させるものであって、このイグナイタ15をその稜線部15fで保持し左右位置を規制する一対のアーム部材16を備えている。   Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment. FIG. 1 is a plan view showing an example of an ignition coil for an internal combustion engine according to the present invention, and FIG. 2 is a longitudinal sectional view of the ignition coil for an internal combustion engine according to the present invention. Here, the ignition coil 10 for an internal combustion engine flows through the primary coil 13 by winding a primary coil 13 and a secondary coil 14 around a magnetic circuit using an iron core 12 formed by laminating silicon steel plates in an insulating case 11. Electromagnetic induction is generated by intermittently passing current through the igniter 15 accommodated in the auxiliary accommodating portion 17 of the insulating case 11, and the counter electromotive force generated thereby is boosted by the secondary coil 14 to generate a high voltage. The igniter 15 is provided with a pair of arm members 16 that hold the ridge line portion 15f and restrict the left and right positions.

アーム部材16は、絶縁ケース11の補助収容部内壁面或いは位置決め治具21から先端が互いに近接するように斜めに立設されている。また、アーム部材16の先端は、折曲部16aを有しており、この折曲部16aで間に装着するイグナイタ15の稜線部を押圧する。   The arm member 16 is erected obliquely so that the distal ends thereof are close to each other from the inner wall surface of the auxiliary housing portion of the insulating case 11 or the positioning jig 21. Moreover, the front-end | tip of the arm member 16 has the bending part 16a, and presses the ridgeline part of the igniter 15 mounted | worn in between by this bending part 16a.

絶縁ケース11の補助収容部17内には、イグナイタ15が収納されその一端が一次端ソケット18から延設された一次端子19と接続される。また、別の端子は、一次コイル13と接続される。更に、絶縁樹脂20を充填し、樹脂の硬化に伴って補助収容部17内に強固に固定する。   An igniter 15 is housed in the auxiliary housing portion 17 of the insulating case 11, and one end of the igniter 15 is connected to a primary terminal 19 extending from the primary end socket 18. Another terminal is connected to the primary coil 13. Furthermore, the insulating resin 20 is filled and firmly fixed in the auxiliary accommodating portion 17 as the resin is cured.

図3は、本発明の内燃機関用点火コイルに使用される位置決め治具21を示す正面図、図4は同位置決め治具21を示す平面図、図5は同位置決め治具21を示す側面図である。ここで、位置決め治具21は、補助収容部17に挿入可能な寸法の基板22とこの基板22の両側から前方に向けて立設されたアーム部材16と半球状突起23を備えている。アーム部材16は、イグナイタ15を左右から挟み込む程度の寸法に配置されており、半球状突起23は、イグナイタ15の下端近傍に形成された孔24に嵌合する寸法に形成されている。また、半球状突起23は、突出方向にバネ付勢されていてもよい。更に、半球状突起自体が弾性部材から構成されていてもよい。   3 is a front view showing a positioning jig 21 used in the ignition coil for an internal combustion engine of the present invention, FIG. 4 is a plan view showing the positioning jig 21, and FIG. 5 is a side view showing the positioning jig 21. It is. Here, the positioning jig 21 includes a substrate 22 of a size that can be inserted into the auxiliary accommodating portion 17, an arm member 16 that is erected forward from both sides of the substrate 22, and a hemispherical protrusion 23. The arm member 16 is sized so as to sandwich the igniter 15 from the left and right, and the hemispherical protrusion 23 is sized to fit into a hole 24 formed near the lower end of the igniter 15. Further, the hemispherical protrusion 23 may be spring-biased in the protruding direction. Furthermore, the hemispherical projection itself may be made of an elastic member.

また、図6(a)は、イグナイタの正面図、(b)は、イグナイタの側面図である。一般に、イグナイタ15は、左右に稜線15fを有するほぼ長方形状の本体15aとそこから上に延設された接続端子15bと、下端に孔24を有する端部15cを備えている。   FIG. 6A is a front view of the igniter, and FIG. 6B is a side view of the igniter. Generally, the igniter 15 includes a substantially rectangular main body 15a having ridge lines 15f on the left and right sides, a connection terminal 15b extending upward therefrom, and an end portion 15c having a hole 24 at the lower end.

以上のように構成した位置決め治具21は、図7に示すように先ずイグナイタ15をアーム部材16、半球状突起23で保持した後、絶縁ケース11の補助収容部17内に装着する。このように予めイグナイタを位置決め治具21で保持した後に補助収容部17に装着し、絶縁樹脂を充填するのでイグナイタの外形寸法にバラツキが存在しても、これらを吸収して精度よく位置決めすることができる。また、アーム部材16は、イグナイタ外装の稜線15f部分を押さえるので、内部の電子回路まで応力が及ぶことがない。   As shown in FIG. 7, the positioning jig 21 configured as described above first holds the igniter 15 with the arm member 16 and the hemispherical protrusion 23 and then mounts it in the auxiliary accommodating portion 17 of the insulating case 11. In this way, the igniter is held in advance by the positioning jig 21 and then attached to the auxiliary accommodating portion 17 and filled with the insulating resin, so that even if there are variations in the external dimensions of the igniter, these can be absorbed and positioned accurately. Can do. Moreover, since the arm member 16 presses the ridge line 15f portion of the igniter exterior, stress does not reach the internal electronic circuit.

図8は、同位置決め治具の他の実施例を示す正面図、図9は、同位置決め治具の他の実施例を示す平面図、図10は、同位置決め治具の他の実施例を示す側面図である。本実施例の位置決め治具25は、イグナイタ15の両側面にアーム部材16が底面側に弾性部材26が配設されており、このアーム部材で狭持する。アーム部材16は、互いに近接するように傾斜して左右に対向配置されている。また、弾性部材26は、イグナイタ15の端部15cを下から押さえるように立設されている。図11(a)は、同位置決め治具にイグナイタ15を装着した状態を示す正面図、(b)は、その側面図である。   FIG. 8 is a front view showing another embodiment of the positioning jig, FIG. 9 is a plan view showing another embodiment of the positioning jig, and FIG. 10 is another embodiment of the positioning jig. FIG. In the positioning jig 25 of the present embodiment, arm members 16 are disposed on both side surfaces of the igniter 15, and elastic members 26 are disposed on the bottom surface side. The arm members 16 are inclined so as to be close to each other, and are arranged opposite to each other on the left and right. The elastic member 26 is erected so as to hold the end 15c of the igniter 15 from below. FIG. 11A is a front view showing a state where the igniter 15 is mounted on the positioning jig, and FIG. 11B is a side view thereof.

以上のように構成した位置決め治具25は、半導体パッケージの外形寸法精度が不揃いであっても、イグナイタに応力を掛けることなく位置決めすることができる。したがって、応力によるイグナイタの故障等の発生を未然に防止することができる。   The positioning jig 25 configured as described above can be positioned without applying stress to the igniter even if the external dimensional accuracy of the semiconductor package is not uniform. Therefore, it is possible to prevent the occurrence of an igniter failure due to stress.

他の実施例として、イグナイタ15を狭持するアーム部材16を絶縁ケース11の補助収容部17の内壁面から直接立設させて構成してもよい。アーム部材16は、イグナイタ15に無理な力を加えない範囲で狭持するように配置する。   As another embodiment, the arm member 16 that holds the igniter 15 may be configured to stand directly from the inner wall surface of the auxiliary housing portion 17 of the insulating case 11. The arm member 16 is disposed so as to be held within a range in which an excessive force is not applied to the igniter 15.

以上のように構成した内燃機関用点火コイル20は、イグナイタ15の外形寸法にバラツキが存在しても、過度な応力が加わることなく位置決めすることができる。したがって、イグナイタが応力で破損するのを未然に防止することができる。   The ignition coil 20 for an internal combustion engine configured as described above can be positioned without applying excessive stress even if the external dimensions of the igniter 15 vary. Therefore, it is possible to prevent the igniter from being damaged by stress.

図1は、本発明に係る内燃機関用点火コイルの一例を示す平面図である。FIG. 1 is a plan view showing an example of an ignition coil for an internal combustion engine according to the present invention. 図2は、同内燃機関用点火コイルの縦断面図である。FIG. 2 is a longitudinal sectional view of the ignition coil for the internal combustion engine. 図3は、本発明の内燃機関用点火コイルに使用される位置決め治具を示す正面図である。FIG. 3 is a front view showing a positioning jig used in the ignition coil for an internal combustion engine of the present invention. 図4は、同位置決め治具を示す平面図である。FIG. 4 is a plan view showing the positioning jig. 図5は、同位置決め治具を示す側面図である。FIG. 5 is a side view showing the positioning jig. 図6(a)は、イグナイタの正面図、(b)は、イグナイタの側面図である。FIG. 6A is a front view of the igniter, and FIG. 6B is a side view of the igniter. 図7(a)は、同位置決め治具にイグナイタを装着した状態を示す正面図、(b)は、その側面図、(c)は、その平面図である。FIG. 7A is a front view showing a state where an igniter is mounted on the positioning jig, FIG. 7B is a side view thereof, and FIG. 7C is a plan view thereof. 図8は、同位置決め治具の他の実施例を示す正面図である。FIG. 8 is a front view showing another embodiment of the positioning jig. 図9は、同位置決め治具の他の実施例を示す平面図である。FIG. 9 is a plan view showing another embodiment of the positioning jig. 図10は、同位置決め治具の他の実施例を示す側面図である。FIG. 10 is a side view showing another embodiment of the positioning jig. 図11(a)は、同位置決め治具にイグナイタを装着した状態を示す正面図、(b)は、その側面図である。Fig.11 (a) is a front view which shows the state which mounted | wore the same positioning jig with the igniter, (b) is the side view. 図12は、従来の内燃機関用点火コイルの一例を示す平面図である。FIG. 12 is a plan view showing an example of a conventional ignition coil for an internal combustion engine. 図13は、従来の内燃機関用点火コイルの一例を示す縦断面図である。FIG. 13 is a longitudinal sectional view showing an example of a conventional ignition coil for an internal combustion engine.

符号の説明Explanation of symbols

10 内燃機関用点火コイル
11 絶縁ケース
12 鉄心
13 一次コイル
14 二次コイル
15 イグナイタ
16 アーム部材
16a 折曲部
17 補助収容部
18 一次端ソケット
19 一次端子
20 絶縁樹脂
21 位置決め治具
22 基板
23 半球状突起
24 孔
25 位置決め治具
26 弾性部材
DESCRIPTION OF SYMBOLS 10 Ignition coil 11 for internal combustion engines Insulating case 12 Iron core 13 Primary coil 14 Secondary coil 15 Igniter 16 Arm member 16a Bending part 17 Auxiliary accommodating part 18 Primary end socket 19 Primary terminal 20 Insulating resin 21 Positioning jig 22 Substrate 23 Hemispherical Protrusion 24 Hole 25 Positioning jig 26 Elastic member

Claims (4)

一次電流を断続するイグナイタを絶縁ケースの補助収容部に収容した内燃機関用点火コイルであって、
前記イグナイタを保持し左右位置を規制する一対のアーム部材を備えたことを特徴とする内燃機関用点火コイル。
An ignition coil for an internal combustion engine in which an igniter that interrupts primary current is housed in an auxiliary housing portion of an insulating case,
An ignition coil for an internal combustion engine, comprising: a pair of arm members that hold the igniter and restrict a left-right position.
前記アーム部材は、絶縁ケースの補助収容部内壁面から立設されたことを特徴とする請求項1に記載の内燃機関用点火コイル。   The ignition coil for an internal combustion engine according to claim 1, wherein the arm member is erected from an inner wall surface of the auxiliary housing portion of the insulating case. 前記アーム部材は、補助収容部内に装着可能な位置決め治具から立設されたことを特徴とする請求項1に記載の内燃機関用点火コイル。   The ignition coil for an internal combustion engine according to claim 1, wherein the arm member is erected from a positioning jig that can be mounted in the auxiliary housing portion. 前記位置決め治具は、イグナイタの底面側を規制する突起を有することを特徴とする請求項3に記載の内燃機関用点火コイル。   The ignition coil for an internal combustion engine according to claim 3, wherein the positioning jig has a protrusion that regulates a bottom surface side of the igniter.
JP2005150419A 2005-05-24 2005-05-24 Ignition coil for internal combustion engine Withdrawn JP2006328990A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009270490A (en) * 2008-05-08 2009-11-19 Hanshin Electric Co Ltd Ignition coil for internal combustion engine
JP2009302356A (en) * 2008-06-16 2009-12-24 Denso Corp Ignition coil
JP2010010241A (en) * 2008-06-25 2010-01-14 Denso Corp Ignition coil
JP7484600B2 (en) 2020-09-10 2024-05-16 株式会社デンソー Ignition coil for internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009270490A (en) * 2008-05-08 2009-11-19 Hanshin Electric Co Ltd Ignition coil for internal combustion engine
JP2009302356A (en) * 2008-06-16 2009-12-24 Denso Corp Ignition coil
JP2010010241A (en) * 2008-06-25 2010-01-14 Denso Corp Ignition coil
JP7484600B2 (en) 2020-09-10 2024-05-16 株式会社デンソー Ignition coil for internal combustion engine

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