F - Mech Eng,Light,Heat,Weapons – 02 – N
Patent
F - Mech Eng,Light,Heat,Weapons
02
N
F02N 15/02 (2006.01) F02N 11/00 (2006.01) F02N 15/06 (2006.01)
Patent
CA 2221848
In an engine starter including a solenoid device for actuating a switch for the electric motor and to drive the pinion into mesh with the ring gear of an internal combustion engine, the solenoid device includes an armature outer member which moves in the direction to push out the pinion against the spring force of a first return spring in the energized state of the solenoid device, and an armature inner member which is resiliently urged by a second return spring,and is telescopically disposed with respect to the armature outer member with a coil spring interposed coaxially between them. An annular spring retainer is press fitted into the inner bore of the armature outer member to receive a corresponding coil end of the coil spring. The spring retainer is stamp formed from non-magnetic material so as to have cylindrical portion which is fitted into the bore of the armature inner member, a flange portion which is bent perpendicularly from the cylindrical portion in the manner of an inwardly directed flange tin its installed state, and a guide piece portion which is bent perpendicularly with respect to the axial direction from the free end of the flange portion. The forming of the armature outer member is thereby simplified, and the guide piece portion supports the coil spring with a centering action. More importantly, the spring retainer which may be made of non-magnetic material can prevent any significant leakage of magnetic flux from the spring retainer.
Kimura Eiichi
Nagashima Shinichi
Nara Koji
Ohya Masaaki
Okada Michio
Lesperance & Martineau S.e.n.c.
Mitsuba Corporation
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