VALVE SEAL MECHANISM - SMC Corporation

Title:

VALVE SEAL MECHANISM

Document Type and Number:

Japanese Patent JP3796006

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a valve seal mechanism whereby an infiltrating amount of a seating part relating to a seal member constituting the valve seal mecha nism is fixed, quality of a fluid pressure equipment used with this valve seal mechanism can be fixedly maintained.
SOLUTION: When a valve element 102 of a pressure reducing valve 70 is displaced in a direction of arrow mark B, a seal member 106 provided in the valve element 102 is brought into contact with a protruded part 86 of a seating part 84, in the seal member 106, the protruded part 86 is press infiltrated. When an infiltrating amount of the protruded part 86 relating to the seal member 106 obtains i, a contact surface 90a to 90d of a retaining part 89a to 89d is brought into contact with the seal member 106, relating thereto, any more infiltration is impeded. Consequently, the infiltrating amount i in the seal member 106 is maintained in a fixed value. Here, by a groove part 88, the protruded part 86 and the contact surface 9Oa to 90d are separated, the groove part 88 communicates with a primary side port 72 by groove parts 92a to 92d, so as to fixedly hold also a valve seal area.

Inventors:

Takumi Tomita
Araki Mitsunori
Naoyuki Yasuda

Application Number:

JP13720897A

Publication Date:

July 12, 2006

Filing Date:

May 27, 1997

Export Citation:

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