# US 7,611,121 B2 · Solenoid control device

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- Number: US 7,611,121 B2
- Document ID: US7611121B2
- Status: Granted
- Kind: B2
- Application number: 11/632,278
- Filed: 2005-07-15
- Published: 2008-07-10
- Granted: 2009-11-03
- Earliest claimed: 2004-07-16
- Assignees: Eagle Industry Co., Ltd.
- Inventors: Toshiaki Iwa; Shinji Sasaki; Ichiro Hirata; Norio Uemura
- Web page: https://patentgrep.com/patent/US7611121B2

## CPC

- F16K 31/0668: {Sliding valves}
- F04B 27/1804: {Controlled by crankcase pressure}
- F16K 31/0613: {with cylindrical slides}
- F04B 2027/1827: {between crankcase and discharge chamber}
- F04B 2027/1831: {between crankcase and suction chamber}
- F04B 2027/1854: {External parameters}
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)

## Abstract

A case main body and an upper plate are reliably fitted together, a seal is formed between the fitting surfaces, and a magnetic circuit is prevented from malfunctioning. A solenoid-controlled valve, which connects a solenoid section (2) and a valve section (30), comprises a cylindrical case main body (3) having a solenoid coil (4) housed therein and having a connecting section (3A) at one end, an upper plate (6) having a locking surface (6B) adapted to be fitted to the connecting section (3A), and a connector (5) integrally provided with the upper plate (6). A seal section (20) is joined to an outer surface between the fitting surfaces of the connecting section (3A) and the upper plate (6).

## Claims

### Claim 1

A solenoid control valve in which a solenoid portion and a valve portion are joined with each other, said solenoid control valve comprising:
(a) a casing main body made of conductive material, having a joint portion on the free end side of a cylindrical portion which contains a solenoid coil therewithin;
(b) an upper plate made of conductive material, having an engagement surface of an annular shape formed on a peripheral surface of a flange and a cylindrical portion protruding from the flange portion to a direction opposite to the solenoid coil, said engagement surface being fitted to said joint portion;
(c) a connector made of resin, formed integrally with said upper plate into one piece so that the cylindrical portion of the upper plate inserted into the connector;
(d) a seal portion attached on an upper surface between an end portion of said joint portion and a peripheral face of the connector; and
(e) a tube of cylindrical design in which a movable core is movably fitted and a fixed core is securely fixed,
wherein the casing main body and the upper plate are directly joined at the joint portion so that both end portions of the tube are held in a coaxial manner by means of a base portion of the casing main body and a fitting surface of the upper plate.

### Claim 2 (depends on 1)

A solenoid control valve as claimed in claim 1 in which said joint portion has a fitting surface and a support surface at a shoulder on the inner circumference, said upper plate rests on said support surface and said engagement surface is fitted to said fitting surface, and said joint portion and said upper plate are clinched by the end portion of said joint portion which is located to the free end side beyond said flange is inclined to said upper plate side.

### Claim 3 (depends on 1, 2)

A solenoid control valve as claimed in claim 1 or claim 2 in which said seal portion is made of a silicone potting.

### Claim 4 (depends on 1, 2)

A solenoid control valve as claimed in claim 1 or claim 2 in which said seal portion is made of a highly resilient rubber material and is attached to a recess formed by said upper plate, said joint portion and said connector.