Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-06-30
1990-12-04
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29467, 29520, 239585, 25112921, B21D 3900
Patent
active
049743120
ABSTRACT:
An electromagnetic fuel injector suitable for use in an automotive engine has a cylindrical yoke constituting a body of the fuel injector, a solenoid coil and a stator core fixedly received in the cylindrical yoke, a movable core adapted to be attracted by the stator core, and a movable valve responsive to the movable core so as to be moved into and out of contact with a fuel injection valve seat in accordance with the balance of force between an electromagnetic force produced by the solenoid coil and a force produced by a spring received in the stator core. The stator core is coaxially received in the cylindrical yoke with a portion of the material of either one of the stator core and the yoke being plastically deformed into an annular groove formed in the opposing surface of the other of the stator core and the yoke. In consequence, the stator core and the yoke are coupled to and held on each other by the contracting force produced by the plastically deformed material in and around the annular groove.
REFERENCES:
patent: 4339873 (1982-07-01), Kanamara et al.
patent: 4392296 (1983-07-01), Kanamara et al.
patent: 4564145 (1986-01-01), Takada et al.
Kanamaru Hisanobu
Kosuge Tokuo
Yokoyama Mizuho
Hall Carl E.
Hitachi , Ltd.
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