A starting device for engines

• Main Authors: Niimi, Masami, Murata, Mitsuhiro
• Format: Patent
• Language: English; French; German
• Published: 02.08.2017
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; COMBUSTION ENGINES; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INDUCTANCES; LIGHTING; MAGNETS; MECHANICAL ENGINEERING; RELAYS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SELECTORS; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR; STARTING OF COMBUSTION ENGINES; TRANSFORMERS; WEAPONS

An electromagnetic switch unit comprises a solenoid device (7) that pushes out a pinion gear to a ring gear side of an engine, and an electromagnetic switch (8) that opens and closes a main point of contact of a motor circuit. The solenoid device (7) and the electromagnetic switch (8) are arranged in series in an axial direction, while a magnetic plate (10a) that forms a part of magnetic circuit between a first coil (11) used for the solenoid device (7) and a second coil (13) used for the electromagnetic switch (8) is shared by the solenoid device (7) and the electromagnetic switch (8). A laminated part formed by laminating a plurality of steel sheets in an axial direction is provided to one or both of the movable iron core and the fixed iron core in the part where the movable iron core is attracted by the magnetized fixed iron core and collide each other. That construction should reduce a collision noise generated when movable parts of the relay collide with each other.