JPH0218657U

JPH0218657U -

Info

Publication number: JPH0218657U
Application number: JP9531688U
Authority: JP
Priority date: 1988-07-18
Filing date: 1988-07-18
Publication date: 1990-02-07

Description

[Brief explanation of the drawing]

第１図乃至第５図は本考案の一実施例を示し、
第１図は正面図、第２図は断面図、第３図は破断
正面図、第４図は電圧波形図、第５図は実際の電
圧波形図である。第６図乃至第１６図は従来例を
示し、第６図は構成図、第７図は回路図、第８図
乃至第１０図は構成図、第１１図乃至第１４図は
電圧波形図、第１５図は点火角度の説明図、第１
６図は同電圧形図である。１……ロータ、２……磁石、３，４……ポール
コア、６……コイルコア、７……点火コイル、８
……トランジスタ回路、１４……１次コイル、１
５……２次コイル、２３，２４……脚部、２７…
…磁気回路。 1 to 5 show an embodiment of the present invention,
1 is a front view, FIG. 2 is a sectional view, FIG. 3 is a cutaway front view, FIG. 4 is a voltage waveform diagram, and FIG. 5 is an actual voltage waveform diagram. 6 to 16 show conventional examples, FIG. 6 is a configuration diagram, FIG. 7 is a circuit diagram, FIGS. 8 to 10 are configuration diagrams, and FIGS. 11 to 14 are voltage waveform diagrams. Figure 15 is an explanatory diagram of the ignition angle,
Figure 6 shows the same voltage form. 1... Rotor, 2... Magnet, 3, 4... Pole core, 6... Coil core, 7... Ignition coil, 8
...Transistor circuit, 14...Primary coil, 1
5... Secondary coil, 23, 24... Leg, 27...
...magnetic circuit.

Claims

[Scope of utility model registration request]

The rotor 1 of the engine is equipped with magnetic poles N and S, and an ignition coil 7 is wound around a coil core 6 provided on the fixed side opposite to the magnetic poles.
Connect the transistor 9 to the primary coil 14 of
In an ignition device that generates a high voltage in the secondary coil 15 of the ignition coil 7 by on/off control of the transistor 9 to ignite, the rotor 1
The side magnetic poles are two poles, and the coil core 6 is provided with two legs 23 and 24 facing the magnetic poles,
The angle between the centers of the magnetic poles N and S is defined as the ignition angle θ required during forward rotation of the engine, and the angle IGA formed by the center of one of the magnetic poles that passes through the center of the coil core 6 when high voltage is generated. , the sum of the ignition angle θ' required when the engine is reversed, and the angle IGA' formed by the center of the other magnetic pole that passes through the center of the coil core 6 when high voltage is generated (θ + IGA + θ' + IGA'). , the angle between the centers of the two leg portions 23 and 24 of the coil core 6 is approximately the same as the sum (θ+IGA+θ'+IGA'), and the ignition coil 7 is located approximately at the center of the magnetic circuit 27 of the coil core 6. An ignition device for a forward/reverse two-stroke engine, characterized by the following.