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PROBLEM TO BE SOLVED: To reduce the leakage of magnetic flux, and improve attraction against a plunger by forming at least one side of an output shaft and a thrust spline by a magnetic body material having a relative magnetic permeability lower than that of iron, or a material formed by thermally tr...

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Bibliographische Detailangaben
Hauptverfasser:	KATAYAMA HIDEKAZU, KOBAYASHI TAKEHIRO, KAMEI KOICHIRO, YAMAGUCHI TADANORI, TSUKAHARA MASAHIKO, KURAGAKI AKIRA, HIRAO JIRO, SHIROYAMA SHIGERU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the leakage of magnetic flux, and improve attraction against a plunger by forming at least one side of an output shaft and a thrust spline by a magnetic body material having a relative magnetic permeability lower than that of iron, or a material formed by thermally treating martensite stainless. SOLUTION: A starter for an engine is covered with a front bracket 20, a center bracket 30, and a rear bracket 40, and is provided with an annular electromagnetic switch 2, an overrunning clutch 3, a plunger (a movable iron core) 4, and the like on a circumference of an output shaft 1 driven by a d.c. electric motor M. In this case, a magnetic body material having a relative magnetic permeability lower than that of iron, or a material formed in such a way that high frequency hardening treatment is carried on martensite stainless out by micro wave, are used in the output shaft 1. Accordingly strength of the output shaft 1 is ensured, it is reduced that magnetic flux is leaked to the output shaft 1 and a thrust spline 3A, and attraction against of the plunger 4 is also improved.