JPS63202170U

JPS63202170U -

Info

Publication number: JPS63202170U
Application number: JP9363587U
Authority: JP
Priority date: 1987-06-18
Filing date: 1987-06-18
Publication date: 1988-12-27

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る磁石発電機を
示す正面図、第２図は前記磁石発電機によつて発
生した交流電圧および信号を用いて機関を好適な
時期に点火させるコンデンサ放電形点火回路図、
第３図はフライホイール内周面の磁石における磁
束波形に対応させて点火用発電コイルの出力波形
等を示す波形図、第４図はフライホイール内周面
の磁石の２つを長くしその増加分を隣接する２つ
の磁石の長さを短縮して吸収した場合の磁石発電
機を断片的に示す正面図、第５図は従来の磁石発
電機を示す正面図、第６図は従来のコンデンサ放
電形点火回路図、第７図は第５図の磁石発電機の
磁石における磁束波形に対応させて点火用発電コ
イルの出力波形等を示す波形図である。３……固定子、４……鉄芯、４ａ……突極、５
……点火用発電コイル、６……付加電力用発電コ
イル、３０…磁石発電機、３１……フライホイー
ル、３２……第１の磁石、３３……第２の磁石、
３４……第３の磁石、３５……第４の磁石、３６
……トリガーポール、３７……電磁ピツクアツプ
装置。なお、各図中同一符号は同一部分又は相当
部分を示す。 FIG. 1 is a front view showing a magnet generator according to an embodiment of the present invention, and FIG. 2 is a capacitor discharge for igniting the engine at a suitable time using the AC voltage and signal generated by the magnet generator. shaped ignition circuit diagram,
Figure 3 is a waveform diagram showing the output waveform of the ignition generator coil in correspondence with the magnetic flux waveform in the magnet on the inner circumference of the flywheel, and Figure 4 shows an increase in the output waveform by lengthening two of the magnets on the inner circumference of the flywheel. Fig. 5 is a front view showing a conventional magnet generator, and Fig. 6 is a conventional capacitor. Discharge type ignition circuit diagram, FIG. 7 is a waveform diagram showing the output waveform of the ignition generator coil in correspondence with the magnetic flux waveform in the magnet of the magnet generator of FIG. 5. 3... Stator, 4... Iron core, 4a... Salient pole, 5
...Generating coil for ignition, 6... Generating coil for additional power, 30... Magnet generator, 31... Flywheel, 32... First magnet, 33... Second magnet,
34...Third magnet, 35...Fourth magnet, 36
...Trigger pole, 37...Electromagnetic pick-up device. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Claims for Utility Model Registration] (1) A bowl-shaped flywheel that rotates in synchronization with an engine has magnetic poles oriented toward the inner and outer circumferential sides, and the magnetic poles are alternately aligned in the circumferential direction. a large number of magnets provided, a large number of power generating coils positioned opposite to the magnets on the inner circumferential surface of the flywheel in the inner space of the flywheel, and including one power generating coil for ignition; a trigger pole of an angular position detection device that is provided on a rotary body that rotates in synchronization with the engine and generates a reference signal for ignition timing control at a predetermined crank position of the engine, and the plurality of magnets have a length a plurality of first magnets, arranged adjacent to each other in the circumferential direction and having _a length (l+
l ₁ ), two second magnets arranged at both ends in the circumferential direction so as to sandwich the two adjacent second magnets, and having a length K that is slightly larger or approximately equal to the pole tip of the ignition generator coil. 3 magnets, and a fourth magnet of length M disposed adjacent to each third magnet, (l ₁ +K+M) equal to 2l; With the rotation of the two second
The mounting position is such that when the polarity of the output voltage generated in the ignition generator coil changes when the magnetic flux of the magnet interlinks with the ignition generator coil, both ends of the ignition generator coil pass through the electromagnetic pickup device of the angular position detector. A magnetic generator characterized by a set length. (2) The magnet generator according to claim 1, wherein the length l of the first magnet is 1/12 of the inner circumference length of the flywheel peripheral wall.