Starter with pinion rotation restricting structure
AssigneeNippondenso Co., Ltd.
InventorTakeshi Araki
Life of this patent
Estimating the term…
Abstract
A rotation restricting member is driven to engage a pinion moving member by a magnet switch and restricts it to rotate, so that it advances under rotation of an output shaft accompanied with energization of a motor and is engaged with a ring gear. Since it is satisfactory to displace the rotation restricting member in order to cause the pinion restricting member to abut against the pinion moving member under application of residual plunger stroke after both contacts of the magnet switch are abutted, it is not necessary to arrange any resilient member between a plunger and the rotation restricting member, thereby simplifying configuration of the magnet switch.
Claims11
A starter comprising:
- a motor;
- an output shaft driven by said motor;
- a pinion moving member having a pinion fitted on said output shaft through a helical spline engagement for an engagement with and a disengagement from a ring gear of an engine;
- a magnet switch having a plunger movable under an electrical energization of an exciting coil, and a movable contact movable toward a fixed contact under motion of said plunger, said magnet switch performing an electrical energization for said motor under an abutment of said movable contact against said fixed contact;
- and
- pinion restricting means for restricting rotation of said pinion through abutment to said pinion moving member by a movement of said plunger of said magnet switch and for enabling said pinion to move toward said ring gear through said helical spline,
- wherein said pinion restricting means is positioned to abut said pinion moving member after said movable contact of said magnet switch is abutted against said fixed contact and before a start of rotation of said pinion moving member by said output shaft.
Dependencies are inferred from the claim text.