Starter adapted to idle stop system of vehicle

摘要

An electromagnetic solenoid of a starter includes: a main solenoid forming an electromagnet to pull a plunger when being energized, a contact unit that controls the motor current ON and OFF.;The contact unit includes a motor power switch including fixed contacts and a movable contact driven by the main solenoid; a regulation member disposed to be movable between a regulated position and a released position and a sub solenoid that drives the regulation member to the regulated position and releases the regulation member to the released position.;The sub solenoid drives the regulation member to the regulated position before the motor power switch is closed to regulate movement of the movable contact and releases the regulation member to the released position when a predetermined time elapses after the plunger is pulled by the electromagnet to release the movable contact.

主权项

1. A starter for starting an engine mounted on a vehicle, the starter comprising:
a motor that generates rotational force by being energized; a pinion that transmits the rotational force of the motor to a ring gear of the engine when the pinion engages with the ring gear; and an electromagnetic solenoid that includes a main solenoid including a plunger and a fixed core, the main solenoid forming a main electromagnet when energized, the electromagnetic solenoid pushing the pinion out towards the ring gear in response to a movement of the plunger moving in an axial direction of the electromagnetic solenoid when the plunger is attracted to the fixed core by the main electromagnet, the electromagnetic solenoid integrating a contact unit that controls current flowing into the motor to be ON and OFF, the contact unit including:
a motor power switch including: (i) a pair of fixed contacts disposed at a starting circuit of the motor, and (ii) a movable contact driven by the main solenoid to open and close between the pair of fixed contacts;a regulation member configured to move between a regulated position and a released position, the regulated position regulating movement of the movable contact not to contact the pair of fixed contact when the motor power switch is being closed, the released position releasing movement of the movable contact so as to allow the movable contact to contact the pair of fixed contacts; anda sub solenoid forming a sub electromagnet when energized, the sub solenoid: (i) driving the regulation member to be at the regulated position when the sub electromagnet is ON, and (ii) releasing the regulation member to be at the released position when the sub electromagnet is OFF, the sub solenoid being configured to control the sub electromagnet to be ON and OFF such that the regulation member is: (1) driven to be at the regulated position before the motor power switch is closed when the main solenoid starts to operate so as to regulate the movement of the movable contact, and (2) released to be at the released position when a predetermined time elapses after the plunger is attracted by the fixed core so as to release the movement of the movable contact.