Mitsubishi Denki Kabushiki Kaisha

Yoshihide Masumoto

Shinji Baba

Fumito Uemura

Tomokazu Umezaki

Power generation efficiency of a magneto generator is improved. A guard ring made of a material of high magnetic permeability such as carbon steel plate is arranged inside a flywheel for the purpose of holding and guarding magnets . the guard ring is provided with opening portions at positions where the guard ring coincides with adjacent two end portions of the neighboring magnets . Magnetic flux is prevented from flowing into the neighboring magnets 12 through the guard ring at the time of power generation. The magnetic flux flows into an iron core of a magneto coil , and generation efficiency is effectively improved.

Magneto generator

Ventilation efficiency inside a flywheel is improved. Plural vent holes are formed on a side wall portion of a flywheel formed by a circumferential wall portion and the side wall portion on one end side of the circumferential wall portion, and fins protruding toward inside of the flywheel are formed between the neighboring vent holes The fins are formed integrally at the time of filling with a resin with which a space between a guard ring for guarding plural magnets arranged inside the circumferential wall portion of the flywheel and the flywheel is filled, and the magnets are embedded in the resin In generating electric power, the fins rotate synchronously with the flywheel a negative pressure is generated at the vent hole portions, and outside air is introduced into the flywheel and ventilation is performed.

The connector of an electronic circuit apparatus has a locking portion formed on its outer circumference. An engagement body for engaging with this locking portion is provided at a through portion of a housing. With a non-elastic engagement of the engagement body with the locking portion, a sealing effect can be obtained, and the connector and the housing can be formed in one piece. Therefore, vibrations are prevented from occurring in an electronic circuit apparatus mounted in the circuit apparatus, so that high reliability can be obtained.

Growing community of inventors

Tokyo, Japan

Yoshihide Masumoto