Metal working – Method of mechanical manufacture – Valve or choke making
Patent
1995-01-23
1996-11-26
Vo, Peter
Metal working
Method of mechanical manufacture
Valve or choke making
29890124, 25112915, 3031192, 303901, B21K 124, B60T 836, F16K 3106
Patent
active
055773222
ABSTRACT:
A process of assembling an electromagnetic valve in which a gap provided between a core and a plunger can be maintained properly without an increase in a number of parts or deterioration in assembly performance. The electromagnetic valve has a shaft, a valve element, which opens and closes a channel, being provided at an end portion of the shaft; a plunger fixed to another end portion of the shaft at the opposite side of the valve element; a valve seat forming body which is positioned further toward the valve element than the plunger, the valve seat forming body forming a valve seat at which the valve element is set; and a sleeve which provided at a periphery of the plunger, a core which opposes the plunger being fixed to the sleeve, and the sleeve being fixed to a housing by caulking. The process of assembling the electromagnetic valve includes steps of: fixing the core to the sleeve; inserting the plunger, to which the shaft is fixed, into the sleeve; integrally forming a valve unit by inserting the valve seat forming body into the sleeve and fixing the valve seat forming body to the sleeve; and inserting the sleeve of the valve unit into the housing and fixing the sleeve to the housing.
REFERENCES:
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patent: 5267785 (1993-12-01), Maisch
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patent: 5335984 (1994-08-01), Alaze et al.
patent: 5364067 (1994-11-01), Linkner, Jr.
patent: 5445448 (1995-08-01), Wolff et al.
Ohshita Kouji
Tamaoki Akifumi
Toyota Jidosha & Kabushiki Kaisha
Vo Peter
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