Patent EP0094610A2 successfully refreshed from Google Patents.
EP0094610A2
Expired / Lapsed
EP
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Solenoid operated valve for oil hydraulic circuit and method for assembling same
Assignee: Bosch Corp
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Filing: 1983-05-11
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Granted: —
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Expires: 2003-05-11
Abstract
Abstract A fixed core is disposed adjacent a main valving unit having inlet and outlet ports, a valve body interposed between the two ports, and a valve chamber accommodating the valve body. The fixed core has a radial flange disposed on one end face of the main valving unit and an axial barrel portion integral with the radial flange, on which a tubular member is fitted. The tubular member accommodates therein a movable core which is drivingly coupled to the valve body and carries a solenoid fitted thereon. A covering means encloses the movable core, the cylindrical member and the solenoid and is fixed to the main valving unit through the radial flange of the fixed core, by a fastening means. Sealing means seal in liquidtight manner between the fixed core and the tubular member, between the main valving unit and the covering means, and between the main valving unit and the fixed core. The fixed core, the tubular member, the solenoid and the covering means are assembled in a manner successively stacked one upon another on the main valving unit, in the order mentioned.
Inventors
- 👤 Nobuyuki Dipl.-Ing. Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:04
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0627; F16K31/0631
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
275 words
A solenoid operated valve for use in an oil hydraulic circuit, comprising: a main valving unit including a valve chamber, a valve body accommodated within said valve chamber, an inlet port and an outlet port, said valve body being arranged between said inlet and outlet ports for displacement to interrupt communication therebetween or establish same; a fixed core disposed adjacent one end face of said main valving unit, said fixed core having a radially extending flange disposed in contact with said one end face of said main valving unit and a barrel portion axially extending integrally from said radially extending flange in a direction away from said main valving unit; a tubular member fitted around said barrel portion of said fixed core, said tubular member being formed of a non-magnetic material; a movable core disposed in said tubular member and axially movable therein; coupling means drivingly coupling said movable core to said valve body of said main-valving unit; a solenoid disposed around said tubular member; covering means enclosing said movable core, said tubular member and said solenoid, said covering means being formed of a magnetic material; whereby when energized, said solenoid cooperates with said fixed core, said movable core and said covering means to form a magnetic loop for causing said movable core and said coupling means to displace said valve body; sealing means sealing in liquidtight manner between said fixed core and said tubular member, between said tubular member and said covering means, and between said main valving unit and said fixed core; and fastening means fixing said covering means to said main valving unit through said radially extending flange of said fixed core.
Claim 2
Dependent Claim
275 words
A solenoid operated valve for use in an oil hydraulic circuit, comprising: a main valving unit including a valve chamber, a valve body accommodated within said valve chamber, an inlet port and an outlet port, said valve body being arranged between said inlet and outlet ports for displacement to interrupt communication therebetween or establish same; a fixed core disposed adjacent one end face of said main valving unit, said fixed core having a radially extending flange disposed in contact with said one end face of said main valving unit and a barrel portion axially extending integrally from said radially extending flange in a direction away from said main valving unit; a tubular member fitted around said barrel portion of said fixed core, said tubular member being formed of a non-magnetic material; a movable core disposed in said tubular member and axially movable therein; coupling means drivingly coupling said movable core to said valve body of said main-valving unit; a solenoid disposed around said tubular member; covering means enclosing said movable core, said tubular member and said solenoid, said covering means being formed of a magnetic material; whereby when energized, said solenoid cooperates with said fixed core, said movable core and said covering means to form a magnetic loop for causing said movable core and said coupling means to displace said valve body; sealing means sealing in liquidtight manner between said fixed core and said tubular member, between said tubular member and said covering means, and between said main valving unit and said fixed core; and fastening means fixing said covering means to said main valving unit through said radially extending flange of said fixed core.
Claim 3
Dependent Claim
44 words
A solenoid operated valve as claimed in Claim 1, wherein said tubular member has one end portion facing said fixed core, said sealing means comprising means brazing said one end portion of said tubular member to said fixed core along a whole periphery thereof.
Claim 4
Dependent Claim
37 words
A solenoid operated valve as claimed in Claim 2, wherein said one end portion of said tubular member is disposed at a boundary between said radially extending flange of said fixed core and said barrel portion thereof.
Claim 5
Dependent Claim
55 words
A solenoid operated valve as claimed in Claim 1, wherein said sealing means comprises an annular groove formed around a boundary between said radially extending flange of said fixed core and said barrel portion thereof, and an annular sealing member disposed in said annular groove and sealing between said fixed core and said tubular member.
Claim 6
Dependent Claim
64 words
A solenoid operated valve as claimed in Claim 4, wherein said tubular member has one end portion facing said fixed core, said one end portion of said tubular member having an outer peripheral surface formed with an annular stepped shoulder, said one end portion being disposed in said annular groove whereby said stepped shoulder urgingly holds said annular sealing member in said annular groove.
Claim 7
Dependent Claim
32 words
A solenoid operated valve as claimed in any of Claims 1 through 5, wherein at least one of said fixed core and said movable core is formed of a magnetic sintered metal.
Claim 8
Dependent Claim
27 words
A solenoid operated valve as claimed in any of Claims 1 through 6, wherein said covering means comprises at least one metallic material which has been stamped.
Claim 9
Dependent Claim
100 words
A solenoid operated valve as claimed in any of Claims 1 through 7, including a support member fitted around said tubular member and supporting said solenoid, and wherein said sealing means comprises an annular recess defined between one end portion of said support member remote from said fixed core and a portion of said tubular member facing said one end portion of said support member, a second annular sealing member disposed in said annular recess, and one end portion of said covering means disposed in said annular recess and urgingly holding said second annular sealing member in said annular recess.
Claim 10
Dependent Claim
116 words
A solenoid operated valve as claimed in any of Claims 1 through 8, wherein said covering means comprises a first covering member having the shape of a cap and enclosing at least part of said movable core, said first covering member having a peripheral surface formed with a radially extending flange, and a second covering member having the shape of a cap and enclosing at least part of said first covering member and said solenoid, said second covering member having a bottom portion engaging said radially extending flange of said first covering member and a peripheral edge formed with a radially extending flange and disposed in contact with said radially extending flange of said fixed core.
Claim 11
Dependent Claim
45 words
A solenoid operated valve as claimed in Claim 9, wherein said radially extending flange of said first covering member and said bottom portion of said second covering member have through holes aligned with each other through which a lead wire leading to said solenoid extends.
Claim 12
Dependent Claim
117 words
ll. A solenoid operated valve as claimed in any of Claims 1 through 10, wherein said main valving unit comprises a valve casing having a recess opening in one end face thereof and said inlet and outlet ports formed therein, an inner member disposed in said recess and having a central hole formed therethrough, an outer member disposed in said recess at a side of said inner member toward said fixed core, said outer member cooperating with said recess to define an opening in which an associated end portion of said fixed core is received, said outer member also cooperating with said recess and said central hole of said inner member to define said valve chamber therebetween.
Claim 13
Dependent Claim
76 words
A solenoid operated valve as claimed in Claim 11, wherein said coupling means comprises a coupling rod extending through first and second central holes formed through said fixed core and said outer member, respectively, said coupling rod having opposite ends thereof disposed for urging contact with said valve body and said movable core, a first spring urging said valve body toward said coupling rod, and a second spring urging said movable core toward said coupling rod.
Claim 14
Dependent Claim
109 words
A solenoid operated valve as claimed in Claim 12, including a return port formed in said valve casing, a communication passage formed in said outer member and communicating at one end with said return port and at another end with said valve chamber, a first through hole axially extending through said barrel portion of said fixed core and communicating with said communication passage, a second through hole axially extending through said movable core and communicating with said first through hole, and an annular gap formed between said second central through hole of said outer member and said coupling rod and communicating with said communication passage of said outer member.
Claim 15
Independent Claim
206 words
A method of assembling a solenoid operated valve for use in an oil hydraulic circuit, comprising the steps of: (a) placing a radially extending flange of a fixed core in contact with one end face of a main valving unit while interposing a first annular member between said radially extending flange of said fixed core and said main valving unit; (b) inserting a coupling rod through a first central hole formed through said fixed core and a second central hole formed through said main valving unit; (c) fitting a tubular member around a barrel portion axially extending integrally from said radially extending flange of said fixed core in a direction away from said main valving unit; (d) placing a solenoid around said tubular member; (f) placing covering means over said movable core, said tubular member and said solenoid in a manner such that said covering means has a radially extending flange disposed in contact with said radially extending flange of said fixed core, while interposing a second annular sealing member between said covering means and said tubular member; and (g) fastening said covering means to said main valving unit by fastening means; wherein said steps (a) through (g) are carried out in the order recited above.
Claim 16
Independent Claim
206 words
A method of assembling a solenoid operated valve for use in an oil hydraulic circuit, comprising the steps of: (a) placing a radially extending flange of a fixed core in contact with one end face of a main valving unit while interposing a first annular member between said radially extending flange of said fixed core and said main valving unit; (b) inserting a coupling rod through a first central hole formed through said fixed core and a second central hole formed through said main valving unit; (c) fitting a tubular member around a barrel portion axially extending integrally from said radially extending flange of said fixed core in a direction away from said main valving unit; (d) placing a solenoid around said tubular member; (f) placing covering means over said movable core, said tubular member and said solenoid in a manner such that said covering means has a radially extending flange disposed in contact with said radially extending flange of said fixed core, while interposing a second annular sealing member between said covering means and said tubular member; and (g) fastening said covering means to said main valving unit by fastening means; wherein said steps (a) through (g) are carried out in the order recited above.
Claim 17
Dependent Claim
39 words
An assembling method as claimed in Claim 14, wherein said step (c) includes brazing one end portion of said tubular member close to said fixed core to said barrel portion of said fixed core along a whole periphery thereof.
Claim 18
Dependent Claim
59 words
An assembling method as claimed in Claim 14, wherein said step (c) includes fitting one end portion of said tubular member close to said fixed core into an annular groove formed in said fixed core at a boundary between said barrel portion and said radially extending flange thereof, while fitting a third annular sealing member into said annular groove.
Claim 19
Dependent Claim
52 words
An assembling method as claimed in any of Claims 14 through 16, wherein said step (g) includes fastening said covering means to said main valving unit by means of a plurality of bolts extending through said radially extending flange of said covering means and said radially extending flange of said fixed core.
Claim 20
Dependent Claim
53 words
An assembling method as claimed in any of Claims 14 through 16, wherein said first annular sealing member is interposed between an inner peripheral surface of a recess formed in said one end face of said main valving unit and an outer peripheral surface of a central protruded portion of said fixed core.
Claim 21
Dependent Claim
54 words
An assembling method as claimed in Claim 16, wherein said step (c) includes fitting said third annular sealing member into said annular groove in said fixed core and urgingly holding said third annular sealing member fitted in said annular groove by a stepped shoulder formed in an outer peripheral surface of said tubular member.
Claim 22
Dependent Claim
159 words
An assembling method as claimed in any of Claims 14 through 16, wherein said covering means comprises a first covering member and a second covering member, each having the shape of a cap, and said step (f) includes fitting said first cover of said covering means onto said tubular member so as to cover at least part of said tubular member and said movable core, and placing said second covering member over said tubular member and said solenoid in a manner such that said first covering member is fitted through a central hole formed through a bottom portion of said second covering member and has a radially extending flange formed at a peripheral surface thereof and engaging said bottom portion of said second covering member, and said radially extending flange of said covering means which is formed on a peripheral edge of said second covering member is disposed in contact with said radially extending flange of said fixed core.
Claim 23
Dependent Claim
45 words
An assembling method as claimed in Claim 20, further including fitting a lead wire leading to said solenoid through a hole formed through said radially extending flange of said first covering member and a hole formed through said bottom portion of said second covering member.
Claim 24
Dependent Claim
84 words
An assembling method as claimed in Claim 20 or Claim 21, wherein said step (f) includes inserting a peripheral edge of said first covering member into an annular recess defined between one end portion of said solenoid remote from said fixed core and a portion of said tubular member facing said one end portion of said solenoid, and interposing said second annular sealing member between said portion of said tubular member and said peripheral edge of said first covering member, within said annular recess.
Claim 25
Dependent Claim
140 words
An assembling method as claimed in any of Claims 14 through 16, wherein said main valving unit includes a vave casing having a return port formed therein, and an outer member disposed therein and having a central hole formed therethrough and a communication passage formed therethrough and communicating with said central hole, the method including fitting said outer member in a recess formed in one end face of said valve casing so as to have said communication passage thereof aligned with said return port, disposing said fixed core in a manner such that a first through hole axially extending through said fixed core is aligned with said communication passage of said outer member, and disposing said movable core in a manner such that a second through hole axially extending through said movable core is aligned with said first through hole.
References Cited (Backward Citations)
No citation records indexed.
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