Fluid handling – With repair – tapping – assembly – or disassembly means – Solenoid or electromagnetically operated valve
Reexamination Certificate
1999-09-13
2001-08-14
Shaver, Kevin (Department: 3754)
Fluid handling
With repair, tapping, assembly, or disassembly means
Solenoid or electromagnetically operated valve
C137S015090, C137S265000, C137S315090, C137S596170, C251S367000
Reexamination Certificate
active
06273122
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The preset invention relates to a magnetic valve and, more particularly, to a magnetic valve for a module for an electrohydraulic gear unit controller, which can be arranged in a multipart housing and which comprises a valve subassembly and a coil-part group.
2. Prior Art
This kind of magnetic valve has already been used in a module for an electrohydraulic gear unit controller. It includes an expensive valve subassembly group, which comprises many expensive parts, which must be made by turning, drilling and cutting or milling. The displacement of the magnetic valve must be adjusted during assembly in an expensive manner. The sealing of the magnetic valve and the valve subassembly group occurs by means of several O-rings, which are parts that exhibit wear. The coil-part group is often attached to the valve subassembly group with attaching means, such as screws and attaching straps or clips. The attachment of the magnetic valve in the control block occurs by means of an additional strap, which is attached with screws to the control block.
A conventional magnetic valve, as a whole, requires many different parts and many working steps for its manufacture and assembly.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a magnetic valve of the above-described kind, especially for use in a module for an electrohydraulic gear unit controller, which does not have the above-described disadvantages.
This object and others which will be made more apparent hereinafter is attained in a magnetic valve, especially for use in a module of an electrohydraulic gear unit controller, which is arranged in a multipart housing and which comprises a valve-part group and a coil-part group.
According to the invention the valve subassembly is arranged in a valve seat formed in one housing part and the valve subassembly has a punched and deep-drawn valve cap that extends into the valve seat, a punched or stamped seat disk, and a pin insert arranged between the seat disk and the valve cap in such a way that a consumer connection is alternately connectable with an inlet connection or an return connection of the magnetic valve by means of the seat disk, the valve cap and the pin insert.
The magnetic valve according to the invention has the advantage that the valve subassembly is simple to construct and thus economical to manufacture. The displacement of the magnetic valve can advantageously be adjusted prior to its assembly. Only one O-ring is required for sealing it. The valve subassembly is shaped to fit in one housing part and the coil-part group is shaped to fit in the other housing part.
Further advantages and advantageous features are described in the detailed description and the dependent claims appended below.
REFERENCES:
patent: 4756331 (1988-07-01), Stegmaier
patent: 4785848 (1988-11-01), Leiber
patent: 5282329 (1994-02-01), Teranishi
patent: 5335983 (1994-08-01), Beck et al.
patent: 5449019 (1995-09-01), Hara
patent: 5651387 (1997-07-01), Thor
patent: 5735503 (1998-04-01), Hietkamp
patent: 35 03 785 A1 (1986-08-01), None
Beakley Jim
Casari John
Schudt Klaus
Bonderer D A
Robert & Bosch GmbH
Shaver Kevin
Striker Michael J.
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