JP3042571B2 - Distributor for internal combustion engine and electromagnetic signal generator - Google Patents
Distributor for internal combustion engine and electromagnetic signal generatorInfo
- Publication number
- JP3042571B2 JP3042571B2 JP5167151A JP16715193A JP3042571B2 JP 3042571 B2 JP3042571 B2 JP 3042571B2 JP 5167151 A JP5167151 A JP 5167151A JP 16715193 A JP16715193 A JP 16715193A JP 3042571 B2 JP3042571 B2 JP 3042571B2
- Authority
- JP
- Japan
- Prior art keywords
- signal generator
- terminal
- electromagnetic signal
- change
- pole piece
- 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
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【0001】[0001]
【産業上の利用分野】内燃機関用配電器等に用いられる
電磁式信号発生器に関し、高電圧印加による内燃機関の
制御装置の破壊を防止することのできる電磁式信号発生
器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic signal generator used in a power distribution device for an internal combustion engine and the like, and more particularly to an electromagnetic signal generator capable of preventing a control device of an internal combustion engine from being destroyed by application of a high voltage.
【0002】[0002]
【従来の技術】内燃機関用配電器において、配電キャッ
プ側電極の外部側と点火プラグとを接続する高電圧用電
線が接続部で外れる等導通しなくなった場合、配電キャ
ップ側電極でなく他の金属部に配電ロータから高電圧が
印加される。内燃機関の動力軸の回転数を検知する電磁
式信号発生器と配電キャップ側電極とが対向して配置さ
れている構造の場合、電磁式信号発生器の端子に高電圧
が印加され、該端子に接続している内燃機関の電子制御
装置が破壊されてしまう。これを防止するため、従来
は、実開平2−122170号公報に示されるように電
磁式信号発生器を電気的な絶縁部材によりおおう構造と
なっていた。このため、部品点数や重量が増加し、配電
器の組立作業性を悪化させるというコストの上昇の問題
があった。2. Description of the Related Art In a power distribution device for an internal combustion engine, when a high-voltage electric wire connecting the outside of a power distribution cap side electrode and a spark plug is disconnected at a connection portion or the like and becomes non-conductive, not a power distribution cap side electrode but another power supply terminal is used. A high voltage is applied to the metal part from the distribution rotor. In the case of a structure in which the electromagnetic signal generator for detecting the rotation speed of the power shaft of the internal combustion engine and the power distribution cap side electrode are arranged to face each other, a high voltage is applied to the terminal of the electromagnetic signal generator, The electronic control unit of the internal combustion engine connected to the engine is destroyed. In order to prevent this, conventionally, as shown in Japanese Utility Model Laid-Open No. 2-122170, an electromagnetic signal generator is covered with an electrically insulating member. For this reason, the number of parts and the weight increase, and there has been a problem of an increase in cost, which impairs the workability of assembling the distributor.
【0003】[0003]
【発明が解決しようとする課題】本発明の目的は、電磁
式信号発生器への高電圧印加を防止し、これによって内
燃機関の電子制御装置の破壊を防止することにある。さ
らに、簡単な構成とすることにより、コストの上昇を防
ぐことを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to prevent the application of a high voltage to an electromagnetic signal generator, thereby preventing the destruction of an electronic control unit of an internal combustion engine. It is another object of the present invention to prevent a rise in cost by adopting a simple configuration.
【0004】[0004]
【課題を解決するための手段】上記目的は、電磁式信号
発生器の端子の近傍にアース電位と導通する導電性部材
を設けることにより達成できる。さらに、この導電性部
材は、電磁式信号発生器の永久磁石に接触したステータ
の一部を折曲し又は延長して形成することにより、上記
目的を達成できる。The above object can be attained by providing a conductive member which is electrically connected to the ground potential near the terminal of the electromagnetic signal generator. Further, the above object can be achieved by forming the conductive member by bending or extending a part of the stator in contact with the permanent magnet of the electromagnetic signal generator.
【0005】[0005]
【作用】導電性部材はアース電位と導通しているので、
誘雷針としての機能を持つ。その結果、高電圧は電磁式
信号発生器の端子よりも、端子の近傍にあるこの導電性
部材に印加しやすくなり、端子への高電圧印加を防止す
ることができる。さらに、この導電性部材をステータの
一部を折曲し又は延長して形成するようにしたことによ
り、簡単に形成でき、従来技術のような部品点数及び重
量の増加し、配電器の組立作業性の悪化がなくなり、コ
ストの上昇を抑えることができる。Since the conductive member is electrically connected to the ground potential,
It has a function as a lightning rod. As a result, the high voltage is more easily applied to the conductive member near the terminal than the terminal of the electromagnetic signal generator, and the application of the high voltage to the terminal can be prevented. Further, since the conductive member is formed by bending or extending a part of the stator, the conductive member can be easily formed, the number of parts and the weight increase as in the prior art, and the assembly work of the power distributor. The deterioration of the performance is eliminated, and an increase in cost can be suppressed.
【0006】[0006]
【実施例】以下、本発明の第一実施例を、図1から図2
を用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG.
【0007】図1において、シャフト1はハウジング2
に回転自在に組付けられ、シャフト1には所定の凸状部
又は溝部を有したリラクタ3と配電ロータ4とが取付け
られている。電磁式信号発生器5は、ハウジング2の底
部にリラクタ3に対向して取付られている。配電キャッ
プ6はハウジング2の開口側に取付けられている。In FIG. 1, a shaft 1 includes a housing 2
The shaft 1 is provided with a reluctor 3 having a predetermined convex portion or groove and a power distribution rotor 4. The electromagnetic signal generator 5 is attached to the bottom of the housing 2 so as to face the reactor 3. The power distribution cap 6 is mounted on the opening side of the housing 2.
【0008】このような構造の内燃機関用配電器におい
て、シャフト1が図示しない内燃機関の動力軸と同期し
て回転し、シャフト1に取付けられているリラクタ3の
凸状部又は溝部がハウジング2に取付けられている電磁
式信号発生器5のポールピース8で検知されて出力信号
を得る。ここで得られた出力信号は、電磁式信号発生器
5の端子11から図示しない信号線により配電器の外部
に出力され、図示しない内燃機関の電子制御装置へ入力
されて内燃機関の点火時期が演算される。この点火時期
は図示しない点火コイルに伝えられて高電圧が発生し、
配電キャップ6の中心電極62から配電ロータ4へ高電
圧が伝えられ、シャフト1とともに回転する配電ロータ
4から配電キャップ側電極61へ伝えられ、図示しない
高電圧用電線から図示しない点火プラグへ配電される。In the power distribution device for an internal combustion engine having such a structure, the shaft 1 rotates in synchronization with the power shaft of the internal combustion engine (not shown), and the convex portion or the groove portion of the reluctor 3 attached to the shaft 1 has the housing 2. Is detected by the pole piece 8 of the electromagnetic signal generator 5 attached to the power supply and an output signal is obtained. The output signal obtained here is output from the terminal 11 of the electromagnetic signal generator 5 to the outside of the power distribution device via a signal line (not shown), and is input to an electronic control unit (not shown) of the internal combustion engine to set the ignition timing of the internal combustion engine. Is calculated. This ignition timing is transmitted to an ignition coil (not shown) to generate a high voltage,
A high voltage is transmitted from the central electrode 62 of the power distribution cap 6 to the power distribution rotor 4, transmitted from the power distribution rotor 4 rotating together with the shaft 1 to the power distribution cap side electrode 61, and distributed from a high-voltage electric wire (not shown) to a spark plug (not shown). You.
【0009】次に、本発明の電磁式信号発生器5の構成
を以下説明する。Next, the configuration of the electromagnetic signal generator 5 of the present invention will be described below.
【0010】図2において、モールド成形された樹脂製
のボビン7には、ポールピース8、永久磁石9、ピック
アップコイル10、ステータ14が組み込まれている。
ポールピース8の外周にはポールピース8とボビン7で
電気的に絶縁されたピックアップコイル10が巻装さ
れ、コイル巻始め及び終わりに各々接続されている端子
11がインサート成形され、コの字形状に形成され、ボ
ビン7の外側2側面を覆うとともに永久磁石9と接触し
たステータ14がインサート成形されている。ステータ
14の一部は延長されて、電磁式信号発生器5を配電器
の内部に取付けるための取付足13を有している。さら
に、ステータ14の他の一部は前記端子11の近傍で延
長されて折曲されている。In FIG. 2, a pole piece 8, a permanent magnet 9, a pickup coil 10, and a stator 14 are incorporated in a molded resin bobbin 7.
A pickup coil 10 which is electrically insulated by the pole piece 8 and the bobbin 7 is wound around the outer periphery of the pole piece 8, and terminals 11 respectively connected to the start and end of the coil winding are insert-molded to form a U-shape. And a stator 14 that covers the two outer side surfaces of the bobbin 7 and is in contact with the permanent magnet 9 is insert-molded. A portion of the stator 14 is extended and has mounting feet 13 for mounting the electromagnetic signal generator 5 inside the power distributor. Further, another part of the stator 14 is extended and bent near the terminal 11.
【0011】以上の構成の配電器において、図示しない
内燃機関の点火プラグに高電圧を伝えるための高電圧用
電線が、配電キャップ6から外れた場合を考えると、高
電圧は配電ロータ4から配電キャップ側電極61には配
電されずに、配電器内部の他の金属部に配電され、高電
圧が印加されることになる。この高電圧が電磁式信号発
生器5の端子11に印加されることを防ぐ手段を講じて
いないと、高電圧は図示しない信号線を伝わり図示しな
い内燃機関の電子制御装置に印加されて該電子制御装置
を破壊してしまう。しかし、本発明においては、電磁式
信号発生器5の端子11の近傍にアース電位と導通する
ステータ14を延長し折曲した延長部12を設けたの
で、この延長部12が誘雷針となって、端子11への高
電圧印加を防止することができ、図示しない内燃機関の
電子制御装置の破壊を防止することができる。さらに、
前記誘雷針はもともと電磁式信号発生器5の一構成部品
であるステータ14の一部を追加加工したものであるか
ら、低コストで製造でき、コストの上昇を防止できる。In the above-described power distribution device, considering that a high-voltage electric wire for transmitting a high voltage to a spark plug (not shown) of the internal combustion engine is detached from the power distribution cap 6, the high voltage is distributed from the power distribution rotor 4. The power is not distributed to the cap-side electrode 61 but is distributed to another metal part inside the distributor, and a high voltage is applied. Unless measures are taken to prevent this high voltage from being applied to the terminal 11 of the electromagnetic signal generator 5, the high voltage is transmitted through a signal line (not shown) and is applied to an electronic control unit of an internal combustion engine (not shown) to The control device is destroyed. However, in the present invention, since the stator 14 that is electrically connected to the ground potential is extended and bent in the vicinity of the terminal 11 of the electromagnetic signal generator 5, the extension 12 is provided. Thus, application of a high voltage to the terminal 11 can be prevented, and destruction of an electronic control unit (not shown) of the internal combustion engine can be prevented. further,
Since the lightning rod is originally obtained by additionally processing a part of the stator 14 which is a component of the electromagnetic signal generator 5, it can be manufactured at low cost and increase in cost can be prevented.
【0012】本発明の第二実施例を図3に示す。本実施
例は図2の実施例と比較して、ステータ14の延長部1
2の形状が若干異なり、折曲を2回行って傾斜部を設け
たものである。本実施例では図2の実施例よりも延長部
12の高さを高くし、かつ、端子11に傾斜部を近付け
ることにより、より確実に誘雷針の効果を狙ったもので
ある。FIG. 3 shows a second embodiment of the present invention. This embodiment is different from the embodiment of FIG.
2 has a slightly different shape, and is provided with an inclined portion by bending twice. In the present embodiment, the height of the extension portion 12 is made higher than that of the embodiment of FIG. 2 and the inclined portion is brought closer to the terminal 11, whereby the effect of the lightning rod is more reliably aimed.
【0013】本発明の第三実施例を図4に示す。配電器
のリラクタ3と反対側になるステータ14の一部を端子
11の方向へ延長して、誘雷針の機能を延長部12に付
与したものである。本実施例では折曲部を有しないの
で、第一実施例よりも低コストで製造することができ
る。FIG. 4 shows a third embodiment of the present invention. A part of the stator 14 on the opposite side to the reluctor 3 of the power distributor is extended in the direction of the terminal 11 so that the function of a lightning rod is imparted to the extension 12. In this embodiment, since there is no bent portion, it can be manufactured at lower cost than in the first embodiment.
【0014】[0014]
【発明の効果】本発明によれば、電磁式信号発生器への
高電圧印加を防止でき、これによって内燃機関の電子制
御装置の破壊を防止できる。また、簡単な構成で目的を
達成できるため、部品点数及び重量の増加、配電器の組
立作業性の悪化、他構成部品との干渉の問題等を解消で
き、コストの上昇を防止できる。According to the present invention, the application of a high voltage to the electromagnetic signal generator can be prevented, whereby the destruction of the electronic control unit of the internal combustion engine can be prevented. Further, since the object can be achieved with a simple configuration, an increase in the number of parts and weight, deterioration in workability of assembling the distributor, a problem of interference with other components, and the like can be solved, and an increase in cost can be prevented.
【図1】本発明になる電磁式信号発生器を組み込んだ内
燃機関用配電器の縦断面図。FIG. 1 is a longitudinal sectional view of a distributor for an internal combustion engine incorporating an electromagnetic signal generator according to the present invention.
【図2】本発明の第一実施例の電磁式信号発生器。FIG. 2 is an electromagnetic signal generator according to a first embodiment of the present invention.
【図3】本発明の第二実施例の電磁式信号発生器。FIG. 3 is an electromagnetic signal generator according to a second embodiment of the present invention.
【図4】本発明の第三実施例の電磁式信号発生器。FIG. 4 shows an electromagnetic signal generator according to a third embodiment of the present invention.
3…リラクタ、5…電磁式信号発生器、7…ボビン、1
0…ピックアップコイル、11…端子、12…延長部、
14…ステータ。3 ... reactor, 5 ... electromagnetic signal generator, 7 ... bobbin, 1
0: pickup coil, 11: terminal, 12: extension,
14 ... Stator.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大槻 英樹 茨城県勝田市大字高場字鹿島谷津2477番 地3 日立オートモティブエンジニアリ ング株式会社内 審査官 阿部 寛 (56)参考文献 実開 昭64−36670(JP,U) (58)調査した分野(Int.Cl.7,DB名) F02P 7/067 F02P 7/00 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideki Otsuki 2477 Kashimayatsu, Kata-shi, Ibaraki Pref. Hitachi Automotive Engineering Co., Ltd. Examiner Hiroshi Abe Hiroshi Abe (56) Reference Shokai Sho 64- 36670 (JP, U) (58) Fields studied (Int. Cl. 7 , DB name) F02P 7/067 F02P 7/00
Claims (4)
るシャフト1、 該シャフト1に結合され一体に回転するとともに、凸状
部又は溝部を有するリラクタ3、 磁束の変化を検知するポールピース8と、該ポールピー
ス8に接触する永久磁石9と、該永久磁石と磁気回路を
形成するステータ14とを備え、かつ前記リラクタ3の
回転によって前記凸状部又は溝部の有無の変化を検知し
て信号を発生する電磁式信号発生器5、 前記シャフト1に結合され一体に回転するとともに、配
電キャップ側電極61へ高電圧を供給する配電ロータ4
から構成される内燃機関用配電器において、 前記電磁式信号発生器5にアース電位と導通する導電性
部材12を前記ステータ14を延長して設けたことを特
徴とする内燃機関用配電器。1. A shaft 1 which rotates in synchronization with the rotation of a power shaft of an internal combustion engine, a reactor 3 which is coupled to the shaft 1 and rotates integrally and has a convex portion or a groove portion, a pole for detecting a change in magnetic flux A piece 8, a permanent magnet 9 in contact with the pole piece 8, and a stator 14 forming a magnetic circuit with the permanent magnet, and a change in the presence or absence of the convex portion or the groove portion is detected by rotation of the retractor 3. An electromagnetic signal generator 5 for generating a signal; a power distribution rotor 4 coupled to the shaft 1 and rotating integrally and supplying a high voltage to the power distribution cap side electrode 61
An internal combustion engine power distribution device comprising: an electromagnetic signal generator 5 and a conductive member 12 that is electrically connected to a ground potential;
るシャフト1、 該シャフト1に結合され一体に回転するとともに、凸状
部又は溝部を有するリラクタ3、 磁束の変化を検知するポールピース8と、該ポールピー
ス8に接触する永久磁石9と、該永久磁石と磁気回路を
形成するステータ14とを備え、かつ前記リラクタ3の
回転によって前記凸状部又は溝部の有無の変化を検知し
て信号を発生し、電気接続用の端子11を介して該信号
を出力する電磁式信号発生器5、 前記シャフト1に結合され一体に回転するとともに、配
電キャップ側電極61へ高電圧を供給する配電ロータ4
から構成される内燃機関用配電器において、 前記端子11と前記配電キャップ側電極61とを対向的
に配置するとともに、 前記端子11の近傍にアース電位と導通する導電性部材
12を前記ステータ14を延長して前記電磁式信号発生
器5に設けたことを特徴とする内燃機関用配電器。2. A shaft 1 which rotates in synchronization with the rotation of a power shaft of an internal combustion engine, a reactor 3 which is coupled to the shaft 1 and rotates integrally and has a convex portion or a groove, and a pole for detecting a change in magnetic flux. A piece 8, a permanent magnet 9 in contact with the pole piece 8, and a stator 14 forming a magnetic circuit with the permanent magnet, and a change in the presence or absence of the convex portion or the groove portion is detected by rotation of the retractor 3. An electromagnetic signal generator 5 that generates a signal and outputs the signal through a terminal 11 for electrical connection, is coupled to the shaft 1, rotates together, and supplies a high voltage to a distribution cap side electrode 61. Power distribution rotor 4
In the power distribution device for an internal combustion engine, the terminal 11 and the power distribution cap-side electrode 61 are disposed so as to face each other, and the conductive member 12 that is electrically connected to the ground potential near the terminal 11 is connected to the stator 14. A distributor for an internal combustion engine, which is extended and provided in the electromagnetic signal generator 5.
付足13を有するステータ14、 巻線よりなり、前記ポールピース8の磁束の変化により
電圧を誘起するピックアップコイル10、 これらを一体成形により保持する樹脂製のボビン7、 前記ピックアップコイル10に接続された端子11とか
ら構成される電磁式信号発生器において、 前記ボビン7の前記端子11が設けられている側に、前
記ステータ14の一部を延長し折曲して、前記端子11
の近傍に延長部12を配置したことを特徴とする電磁式
信号発生器。3. A pole piece 8 for detecting a change in magnetic flux; a permanent magnet 9 in contact with the pole piece 8; a stator 14 having a mounting leg 13 in contact with the permanent magnet 9 to form a magnetic circuit; A pickup coil 10 for inducing a voltage due to a change in magnetic flux of the pole piece 8, a resin bobbin 7 for holding these by integral molding, and a terminal 11 connected to the pickup coil 10. In the signal generator, on the side of the bobbin 7 where the terminal 11 is provided, a part of the stator 14 is extended and bent so that the terminal 11
An electromagnetic signal generator characterized in that an extension part 12 is arranged near the device.
付足13を有するステータ14、 巻線よりなり、前記ポールピース8の磁束の変化により
電圧を誘起するピックアップコイル10、 これらを一体成形により保持する樹脂製のボビン7、 前記ピックアップコイル10に接続された端子11とか
ら構成される電磁式信号発生器において、 前記ボビン7の前記端子11が設けられている側に、前
記ポールピース8が磁束の変化を検知する側と反対側の
前記ステータ14の一部を延長して、前記端子11の近
傍に延長部12を配置したことを特徴とする電磁式信号
発生器。4. A pole piece 8 for detecting a change in magnetic flux, a permanent magnet 9 in contact with the pole piece 8, a stator 14 in contact with the permanent magnet 9 to form a magnetic circuit, and having a mounting foot 13. A pickup coil 10 for inducing a voltage due to a change in magnetic flux of the pole piece 8, a resin bobbin 7 for holding these by integral molding, and a terminal 11 connected to the pickup coil 10. In the signal generator, a part of the stator 14 on the side opposite to the side where the pole piece 8 detects a change in magnetic flux is extended to the side of the bobbin 7 where the terminal 11 is provided, and the terminal 11 An electromagnetic signal generator characterized in that an extension part 12 is arranged near the device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5167151A JP3042571B2 (en) | 1993-07-06 | 1993-07-06 | Distributor for internal combustion engine and electromagnetic signal generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5167151A JP3042571B2 (en) | 1993-07-06 | 1993-07-06 | Distributor for internal combustion engine and electromagnetic signal generator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP830399A Division JPH11287175A (en) | 1999-01-14 | 1999-01-14 | Distributor for internal combustion engine and electromagnetic type signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0727038A JPH0727038A (en) | 1995-01-27 |
JP3042571B2 true JP3042571B2 (en) | 2000-05-15 |
Family
ID=15844373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5167151A Expired - Fee Related JP3042571B2 (en) | 1993-07-06 | 1993-07-06 | Distributor for internal combustion engine and electromagnetic signal generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3042571B2 (en) |
-
1993
- 1993-07-06 JP JP5167151A patent/JP3042571B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JPH0727038A (en) | 1995-01-27 |
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