JPS5851415Y2 - Engine ignition power distributor - Google Patents
Engine ignition power distributorInfo
- Publication number
- JPS5851415Y2 JPS5851415Y2 JP1977071209U JP7120977U JPS5851415Y2 JP S5851415 Y2 JPS5851415 Y2 JP S5851415Y2 JP 1977071209 U JP1977071209 U JP 1977071209U JP 7120977 U JP7120977 U JP 7120977U JP S5851415 Y2 JPS5851415 Y2 JP S5851415Y2
- Authority
- JP
- Japan
- Prior art keywords
- power distribution
- transistor
- interrupter
- base plate
- support base
- 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
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
この考案は、点火−次電流を開閉するトランジスタを配
電筐体内に収納し、該トランジスタと配電ロータとを電
気的に遮へいをする機関点火用配電器に関するものであ
る。[Detailed Description of the Invention] This invention relates to an engine ignition power distributor that houses a transistor for switching on and off the ignition current in a power distribution case, and electrically shields the transistor and the power distribution rotor.
従来、この種機関点火用配電器(以下、単に配電器とい
う。Conventionally, this type of engine ignition power distribution device (hereinafter simply referred to as a power distribution device) has been used.
)の中には断続器の動作により点火−次電流を開閉して
二次コイルに高電圧を発生させる、いわゆる断続器接点
方式のものがあった。), there was a so-called interrupter contact system in which the ignition-secondary current was switched on and off by the operation of the interrupter to generate a high voltage in the secondary coil.
ところが、この方式では断続器接点の焼損、摩耗あるい
は酸化等によって二次発生電圧の低下が起こることが少
なくなかった。However, with this system, the secondary generated voltage often decreases due to burnout, wear, or oxidation of the interrupter contacts.
このため従来の断続器接点方式にトランジスタを組合せ
たいわゆるセミトランジスタ方式が提案されている。For this reason, a so-called semi-transistor system has been proposed in which a transistor is combined with the conventional interrupter contact system.
このセミトランジスタ方式では一次電流の大部分は断続
器接点に流さず、トランジスタのスイッチ作用により一
次電流を開閉するものである。In this semi-transistor system, most of the primary current does not flow through the interrupter contact, but the primary current is switched on and off by the switching action of the transistor.
断続器接点に流れる電流はトランジスタのベース電流だ
けとなるので、点火コイルに供給される一次電流よりか
なり小さくなる。The current flowing through the interrupter contact is only the base current of the transistor and is therefore much smaller than the primary current supplied to the ignition coil.
更に断続器接点の開放時の電圧も非常に小さくなりアー
ク発生もなくなるので、断続器接点の焼損、摩耗等が軽
減できる。Furthermore, since the voltage when the interrupter contact is opened is extremely small and no arc occurs, burnout, wear, etc. of the interrupter contact can be reduced.
ところが、トランジスタを断続器接点方式に組合せる場
合、該トランジスタを配電筐体内に配設するときには該
トランジスタと、各シリンダの点火プラグに高電圧を配
電する配電ロータとは適当な絶縁距離を設ける必要があ
る。However, when combining transistors with a circuit breaker contact method, when installing the transistor in a power distribution case, it is necessary to provide an appropriate insulation distance between the transistor and the power distribution rotor that distributes high voltage to the spark plugs of each cylinder. There is.
これは該トランジスタの絶縁耐量と配電ロータに印加す
る高電圧とのレベル差が大きく、例えば前者が約400
V〜500vに対して後者は30Kv〜40Kvである
からである。This is because there is a large level difference between the dielectric strength of the transistor and the high voltage applied to the distribution rotor.
This is because the latter is 30Kv to 40Kv while V is 500v.
しかし、該トランジスタと該配電ロータとの絶縁距離を
設けることは、配電器自体大型になるので=般には困難
であった。However, it is generally difficult to provide an insulating distance between the transistor and the power distribution rotor because the power distributor itself becomes large.
このため、該トランジスタと該配電ロータとの間に電気
的な遮へい板を配置する手段が考えられるが、従来では
かかる手段として該遮へい板を配電筐体に取付ける構成
があったにすぎない。For this reason, it is conceivable to arrange an electrical shielding plate between the transistor and the power distribution rotor, but in the past, the only such means has been a configuration in which the shielding plate is attached to the power distribution case.
このように従来における該遮へい板を該配電筐体に取付
ける作業においては、該配電筐体自体を取扱う作業が不
可欠となり、作業性の向上は期待できなかった。As described above, in the conventional work of attaching the shielding plate to the power distribution case, it was necessary to handle the power distribution case itself, and no improvement in work efficiency could be expected.
殊に、既販車に装着されている断続器接点方式のものに
該トランジスタを組み込みセミトランジスタカ式のもの
に変換することが所望されしかも、該トランジスタを配
電筐体内に配設する試みがなされる。In particular, it is desired to incorporate the transistor into a circuit breaker contact type circuit breaker installed in existing vehicles and convert it to a semi-transistor type circuit, and attempts have been made to place the transistor in a power distribution case. .
かかる場合には該トランジスタと該配電ロータとを電気
的に遮へいをする遮へい板が使用されようが従来ではこ
の遮へい板の取付げに際しては、配電筐体の取付は可能
な加工等が必要となる。In such a case, a shielding plate that electrically shields the transistor and the power distribution rotor may be used, but conventionally, when installing this shielding plate, processing, etc. that is necessary to attach the power distribution case is necessary. .
しかし、一般に該遮へい板を該配電筐体に取付は得るよ
うに構成するには相当な困難性が予想される。However, in general, considerable difficulty is expected in configuring the shielding plate to be attached to the power distribution case.
この考案はかかる不都合を解消するためになされたもの
で、トランジスタを取付ける支持板を設け、この支持板
に遮へい板を装着するという簡単な作業のみで、該トラ
ンジスタと配電ロータとを電気的に遮へいをし得る新規
な機関点火用配電器を提供するものである。This invention was devised to eliminate this inconvenience, and it is possible to electrically shield the transistor and the power distribution rotor by simply providing a support plate for mounting the transistor and attaching a shield plate to the support plate. The present invention provides a novel engine ignition power distribution device that can perform the following functions.
以下、この考案による一実施例を図に基づいて詳細に説
明する。Hereinafter, one embodiment of this invention will be described in detail based on the drawings.
図では上述したセミトランジスタ方式について示すもの
とする。In the figure, the above-mentioned semi-transistor system is shown.
第1図及び第2図において、1は機関により駆動される
回転軸、2はこの回転軸1に設けられたカム、3は回転
軸1を支承する筐体、4は従来断続器を取付けていた合
板で、筐体3に固着されている。In Figs. 1 and 2, 1 is a rotating shaft driven by an engine, 2 is a cam provided on this rotating shaft 1, 3 is a housing that supports the rotating shaft 1, and 4 is a conventional interrupter. It is fixed to the housing 3 using plywood.
5は台板4上に固定された支持台板で、具体的形状につ
いては後述するが、第2図に示すようにその一部がほぼ
直角に折り曲げられ、水平部5a及び垂直部5bから構
成されている。Reference numeral 5 denotes a support base plate fixed on the base plate 4, the specific shape of which will be described later, but as shown in FIG. has been done.
6はスイッチ動作により点火−次電流を開閉するパワー
トランジスタで、支持台板5の垂直部5bに取付けられ
る。Reference numeral 6 denotes a power transistor that opens and closes the ignition-following current by a switch operation, and is attached to the vertical portion 5b of the support base plate 5.
Tは支持台板5の水平部5a上に固定された断続器で、
例えば固定接点7aは支持台板5側に固定され、可動接
点7bを有する可動側は支承軸7cに遊嵌されている。T is an interrupter fixed on the horizontal part 5a of the support base plate 5;
For example, the fixed contact 7a is fixed to the support base plate 5 side, and the movable side having the movable contact 7b is loosely fitted to the support shaft 7c.
この可動側はパワートランジスタ60ベースに接続され
ている。This movable side is connected to the power transistor 60 base.
そしてこれら接点7a、7bに流れる電流はパワートラ
ンジスタ6をオンオフ制御する信号電流のみである。The current flowing through these contacts 7a and 7b is only a signal current for controlling the power transistor 6 on and off.
8は絶縁材料から構成された遮へい板で、パワートラン
ジスタ6及び断続器7を包囲する。A shielding plate 8 is made of an insulating material and surrounds the power transistor 6 and the interrupter 7.
この具体的な構成については後述する。This specific configuration will be described later.
9は回転軸1の先端部に装着された配電ロータの本体部
、10は配電ロータの本体部9に固着された配電電極、
11は配電キャップで、上述した筐体3を除く、他の支
持台板5、遮へい板8、配電ロータの本体部9等を収納
し筐体3と係合するものである。9 is a main body of a power distribution rotor attached to the tip of the rotating shaft 1; 10 is a power distribution electrode fixed to the main body 9 of the power distribution rotor;
Reference numeral 11 denotes a power distribution cap, which accommodates the support base plate 5, shielding plate 8, main body portion 9 of the power distribution rotor, etc. other than the above-mentioned casing 3, and engages with the casing 3.
12は点火コイル(図示せず)に接続するために設けた
中央電極部、13は中央電極部12に設けられ、配電電
極10に接触するコンタクタ、14は機関の点火栓(図
示せず)に接続するために設けた周囲電極である。12 is a central electrode part provided for connection to an ignition coil (not shown), 13 is a contactor provided in the central electrode part 12 and contacts the power distribution electrode 10, and 14 is a contactor provided to the engine's spark plug (not shown). This is a surrounding electrode provided for connection.
第3図は支持台板5の具体的構成を示す斜視図である。FIG. 3 is a perspective view showing the specific structure of the support base plate 5. As shown in FIG.
この支持台板5の水平部5aには、その中央部に回転軸
1が挿入されるために回転軸用孔部5cが設けられ、又
2個のねじ孔部5d、5d及び第1図に示す支承軸7c
に嵌入される支承孔部5eが形成される。The horizontal part 5a of the support base plate 5 is provided with a rotary shaft hole 5c in the center of which the rotary shaft 1 is inserted, and two screw holes 5d and 5c are provided in FIG. Support shaft 7c shown
A support hole 5e is formed into which the support hole 5e is fitted.
垂直部5bには、その両側に夫々突出部5f 、5fを
設けると共に、パワートランジスタ6を取付けるために
4個の孔部5gを設ける。The vertical portion 5b is provided with protrusions 5f and 5f on both sides, respectively, and four holes 5g for mounting the power transistor 6.
第4図は遮へい板8の具体的構成を示す斜視図である。FIG. 4 is a perspective view showing a specific structure of the shielding plate 8. As shown in FIG.
この遮へい板は平担部8aと円筒状のスカート部8bと
からなり、その平担部8aの中央部には配電ロータの本
体部9の下部が挿入されるために孔部8cを設け、スカ
ート部8bの所定部には2カ所に凹部8d、8dを設け
る。This shielding plate consists of a flat part 8a and a cylindrical skirt part 8b, and a hole part 8c is provided in the center of the flat part 8a for inserting the lower part of the main body part 9 of the power distribution rotor, Recesses 8d, 8d are provided at two predetermined locations in the portion 8b.
そして、これら四部8d 、8dには支持台板5の突出
部5f、5fが夫々係合される係合孔8e、8eを形成
する。Engagement holes 8e and 8e are formed in these four parts 8d and 8d, respectively, into which the protrusions 5f and 5f of the support base plate 5 are engaged.
又平担部8aの内側には第4図に示すように4個の案内
突出部8fを設け、夫々相対向する2個の案内突起部8
f 、8f間の距離tは支持台板5の垂直部5bの厚さ
が挿入し得る程度に設定する。Moreover, as shown in FIG. 4, four guide protrusions 8f are provided inside the flat part 8a, and two guide protrusions 8 facing each other are provided on the inside of the flat part 8a.
The distance t between f and 8f is set to such an extent that the thickness of the vertical portion 5b of the support base plate 5 allows insertion.
又、坪担部8aの内側には第2図に示すように支承軸7
cの先端に係止するように係止片8gを設けるものであ
る。Furthermore, a support shaft 7 is provided inside the support portion 8a as shown in FIG.
A locking piece 8g is provided so as to lock at the tip of c.
しかして、支持台板5の垂直部5bにパワートランジス
タ6を取付け、この支持台板5の支承孔部5eに支承軸
1cを嵌入せしめると共に、ねじis、isにより、支
持台板5を台板4に配設する。Then, the power transistor 6 is attached to the vertical part 5b of the support base plate 5, and the support shaft 1c is fitted into the support hole 5e of the support base plate 5. 4.
このとき、断続器7も支持台板5に取付ける。つぎに、
遮へい板8の案内突出部8f、8fの間に支持台板5の
垂直部5bを挿入するように配置すると共に、案内突起
部8f、8fに案内させて垂直部5bに遮へい板8を支
持する。At this time, the interrupter 7 is also attached to the support base plate 5. next,
The vertical portion 5b of the support base plate 5 is inserted between the guide projections 8f, 8f of the shielding plate 8, and the shielding plate 8 is supported on the vertical portion 5b by being guided by the guide projections 8f, 8f. .
このとき、垂直部5bの突出部5f、5fを遮へい板8
の係合孔8e、8eに夫々係合させる。At this time, the protrusions 5f, 5f of the vertical portion 5b are covered by the shielding plate 8.
are engaged with the engagement holes 8e and 8e, respectively.
一方遮へい板8の平担部8aに設けられた係止片8gを
支承軸7cの先端に係止せしめる。On the other hand, a locking piece 8g provided on the flat portion 8a of the shielding plate 8 is locked to the tip of the support shaft 7c.
こうして、遮へい板8の回転軸1の径力向の移動に対し
ては案内突出部8fと支持台板5の垂直部5b、更に係
止片8gと支承軸7eとの夫々の係止により抑制せしメ
ルト共に、回転軸1の軸力向の移動に対しては、支持台
板5の突出部5f 、5fと遮へい板8の係合孔8e、
8cとの係合により抑制している ここに、遮へい板8
は支持台板5に強固に支持される。In this way, movement of the rotation shaft 1 of the shielding plate 8 in the radial force direction is suppressed by the respective locks between the guide protrusion 8f and the vertical portion 5b of the support base plate 5, as well as between the locking piece 8g and the support shaft 7e. With respect to the movement of the rotary shaft 1 in the axial force direction, the protrusions 5f, 5f of the support base plate 5 and the engagement hole 8e of the shielding plate 8,
The shielding plate 8 is suppressed by engaging with the shielding plate 8c.
is firmly supported by the support base plate 5.
従って、遮へい板8の平担部8aをバフ−トランジスタ
6と配電ロータの配電電極10との間に介在せしめ、こ
れらパワートランジスタ6と配電電極10とを電気的に
遮へいすることができる。Therefore, the flat portion 8a of the shielding plate 8 is interposed between the buff transistor 6 and the power distribution electrode 10 of the power distribution rotor, and these power transistors 6 and the power distribution electrode 10 can be electrically shielded.
殊に、既販車に装着されている断続器接点あ式のものを
パワートランジスタ6を筐体3及び配電キャップ11内
に組み込むセミトランジスタ方式のものに変換する場合
にも、上述のように支持台板5及び遮へい板8を用意し
、パワートランジスタ6を取付けた支持台板5を台板4
に固着し、かつ遮へい板を配設する等により簡単に変換
することができる。In particular, when converting a circuit breaker contact type installed in existing vehicles to a semi-transistor type in which the power transistor 6 is incorporated into the housing 3 and the power distribution cap 11, the support stand is used as described above. A plate 5 and a shielding plate 8 are prepared, and the support base plate 5 on which the power transistor 6 is attached is attached to the base plate 4.
It can be easily converted by fixing it to the base and installing a shielding plate.
ナオ、上述ノー実施例ではセミトランジスタ方式のもの
について説明したが、この考案は断続器7を使用せず、
この断続器7を更にトランジスタに置換した、いわゆる
フルトランジスタ方式のものにも適用することが可能で
ある。Nao, in the above-mentioned non-example, a semi-transistor system was explained, but this invention does not use the interrupter 7,
It is also possible to apply the circuit breaker 7 to a so-called full transistor system in which the interrupter 7 is further replaced with a transistor.
以上説明したように、この考案による機関点火用配電器
は、配電ロータおよび断続器とトランジスタとを電気的
に遮へいする遮へい板とを備えた機関点火用電器におい
て、配電筐体に固着された合板に水平部及び垂直部を有
する支持台板の上記水平部を取付けるとともに、この支
持台板の水平部に断続器を、垂直部にトランジスタをそ
れぞれ取付け、上記遮へい板の裏面に支持台板の垂直部
上端に嵌合される案内突出部と断続器の支承軸に係止さ
れる係止片とを設け、この案内突出部および係止片を上
記垂直部上端および支承軸に嵌合させて断続器およびト
ランジスタをこれらを包囲する上記遮へい板によって配
電ロータから電気的に遮へいするような構成であるから
、従来のように遮へい板を配電筐体自体に取付けるので
はなく、従って上記配電筐体を直接取扱う作業は不要と
なるので、作業が容易となる利点がある。As explained above, the engine ignition power distribution device according to this invention is an engine ignition power device that is equipped with a power distribution rotor, a shielding plate that electrically shields the interrupter, and the transistor. Attach the above-mentioned horizontal part of the support base plate having a horizontal part and a vertical part to the support base plate, and install an interrupter on the horizontal part of this support base plate and a transistor on the vertical part, respectively, and install the vertical part of the support base plate on the back side of the above-mentioned shielding plate. A guide protrusion that is fitted to the upper end of the vertical part and a locking piece that is locked to the support shaft of the interrupter are provided, and the guide protrusion and the locking piece are fitted to the upper end of the vertical part and the support shaft to disconnect the interrupter. Since the structure is such that the shield plate surrounding the transistors and the transistors is electrically shielded from the power distribution rotor, the shield plate is not attached to the power distribution case itself as in the conventional case. Since there is no need for direct handling work, there is an advantage that the work becomes easier.
殊に、既販単に装着されている断続器接点方式のものを
上記トランジスタを配電筐体内に設けた例えばセミトラ
ンジスタ方式のものに変換する場合にも、上記支持板に
上記遮へい板を装着する等により簡単に変換可能となる
。In particular, when converting a circuit breaker contact system that is simply installed on the market to, for example, a semi-transistor system in which the transistor is installed inside the power distribution case, it is necessary to attach the shielding plate to the support plate, etc. can be easily converted.
第1図はこの考案による機関点火用配電器の一実施例を
示す平面図、第2図は第1図の切線11−■で切断した
ときの断面図、第3図は第1図及び第2図に示す支持台
板の詳細斜視図、第4図は第1図及び第2図に示す遮へ
い板の詳細斜視図である。
なお、図中同一符号は同−又は相当部分を示すものとす
る。
1・・・回転軸、2・・・カム、3・・・筐体、4・・
・台板、5・・・支持台板、6・・・パワートランジス
タ、7・・・継続器、8・・・遮へい板、9・・・配電
ロータの本体部、10・・・配電電極、11・・・配電
キャップ、12・・・中央電極部、13・・・コンタク
タ、14山周囲電極、15.16・・・ねじ。Fig. 1 is a plan view showing an embodiment of the engine ignition power distributor according to this invention, Fig. 2 is a sectional view taken along the line 11-■ in Fig. 1, and Fig. 2 is a detailed perspective view of the support base plate shown in FIG. 2, and FIG. 4 is a detailed perspective view of the shield plate shown in FIGS. 1 and 2. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1... Rotating shaft, 2... Cam, 3... Housing, 4...
- Base plate, 5... Support base plate, 6... Power transistor, 7... Continuing device, 8... Shielding plate, 9... Main body of power distribution rotor, 10... Power distribution electrode, DESCRIPTION OF SYMBOLS 11... Power distribution cap, 12... Center electrode part, 13... Contactor, 14 ridge surrounding electrode, 15.16... Screw.
Claims (1)
トランジスタと、トランジスタをオンオフ制御するため
の断続器と、配電ロータとトランジスタとを電気的に遮
へいする遮へい板とを備えた機関点火用配電器において
、配電筐体に固着された合板に水平部及び垂直部を有す
る支持台板の上記水平部を取付けるとともに、この支持
台板の水平部に断続器を、垂直部にトランジスタをそれ
ぞれ取付け、上記遮へい板の裏面に支持台板の垂直部上
端に嵌合される案内突出部と上記断続器の可動側を支承
する支承軸に係止される係止片とを設け、この案内突出
部を上記垂直部上端に嵌合させるとともに、上記係止片
を上記支承軸に係止させて断続器およびトランジスタを
これらを包囲する上記遮へい板によって上記配電ロータ
から電気的に遮へいするように構成したことを特徴とす
る機関点火用配電器。An engine ignition power distribution device comprising a power distribution rotor, a transistor that opens and closes the ignition current by opening and closing operations, an interrupter for controlling on/off of the transistor, and a shielding plate that electrically shields the power distribution rotor and the transistor. At the same time, the above-mentioned horizontal part of the support base plate having a horizontal part and a vertical part is attached to the plywood fixed to the power distribution case, and an interrupter is attached to the horizontal part of this support base plate, and a transistor is attached to the vertical part, and the above-mentioned A guide protrusion that fits into the upper end of the vertical part of the support base plate and a locking piece that is engaged with a support shaft that supports the movable side of the interrupter are provided on the back surface of the shield plate, and this guide protrusion is connected to the The locking piece is fitted to the upper end of the vertical portion, and the locking piece is locked to the support shaft so that the interrupter and the transistor are electrically shielded from the power distribution rotor by the shielding plate that surrounds them. Features a power distribution device for engine ignition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977071209U JPS5851415Y2 (en) | 1977-05-31 | 1977-05-31 | Engine ignition power distributor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977071209U JPS5851415Y2 (en) | 1977-05-31 | 1977-05-31 | Engine ignition power distributor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53165129U JPS53165129U (en) | 1978-12-25 |
JPS5851415Y2 true JPS5851415Y2 (en) | 1983-11-22 |
Family
ID=28981741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1977071209U Expired JPS5851415Y2 (en) | 1977-05-31 | 1977-05-31 | Engine ignition power distributor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5851415Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4892730A (en) * | 1972-03-13 | 1973-12-01 | ||
JPS50139236A (en) * | 1974-04-25 | 1975-11-07 |
-
1977
- 1977-05-31 JP JP1977071209U patent/JPS5851415Y2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4892730A (en) * | 1972-03-13 | 1973-12-01 | ||
JPS50139236A (en) * | 1974-04-25 | 1975-11-07 |
Also Published As
Publication number | Publication date |
---|---|
JPS53165129U (en) | 1978-12-25 |
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