Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1998-04-30
1999-11-02
Hepperle, Stephen M.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
137510, F02M 6954, G05D 1606
Patent
active
059751150
DESCRIPTION:
BRIEF SUMMARY
PRIOR ART
The invention is based on a pressure regulator valve.
A pressure regulator valve that is currently mass produced and widely distributed contains a large number of different individual components which are preassembled into subassemblies, which are then connected to one another chiefly by crimping. One of the subassemblies contains, for example, a membrane and a closing body. The closing body contains, for example, a ball part, a securing element, a spring plate, and a spring. These parts are assembled and caulked. Another subassembly includes a housing part into which a metal nozzle is press fitted. The housing part is comprised of stamped sheet metal with a central opening, wherein the sheet metal is bent over in the region of the central opening. The metal nozzle is press fitted into this central opening. The housing part that holds the metal nozzle is connected by crimping to another housing part that constitutes a top piece. The membrane with the closing body is inserted between the two housing parts before they are connected.
An additional support ring, a sealing element, and a support disk are also mounted to the housing part that holds the metal nozzle. The sealing element is an O-ring between the support ring and the support disk.
In the known pressure regulator valve, the large number of individual parts to be connected to one another by means of assembly is disadvantageous. As a result, a considerable expenditure is necessary in the assembly. Attention must also be paid that the individual parts are reliably connected to one another and are not damaged during assembly.
Since the pressure regulator valve is often required, small savings in the individual pressure regulator valve also result in a large savings, considered as a whole, in the cost for the manufacture of the pressure regulator valve.
ADVANTAGES OF THE INVENTION
The pressure regulator valve according to the invention has the advantage over the prior art that the number of individual parts to be assembled during the assembly of the pressure regulator valve is reduced. As a result, the assembly steps during assembly of the pressure regulator valve can be reduced. This simplifies the assembly significantly and the danger of assembly errors and function interruptions caused by them is considerably reduced.
Advantageous improvements and updates of the pressure regulator valve disclosed are possible by means of the measures taken herein after.
If the fuel return is routed through the injection molded stop piece, then as a result, the number of required components is advantageously reduced and the connection can be eliminated between the housing part and the metal nozzle through which the fuel return is routed in the known pressure regulator valve, which connection is costly to produce and is critical with regard to the known pressure regulator valve.
The valve seat can be provided in a simple manner on the injection molded stop piece. In an advantageously trouble free manner, a material can be used for the injection molded stop piece, which is well suited for the formation of a valve seat.
The housing part of the valve housing can be embodied without a noticeable increase in cost so that the valve seat toward which the closing body is acted upon is formed on the housing part. As a result, the number of individual parts to be assembled is advantageously reduced and from the material, the housing part advantageously has favorable properties that lend it the capacity to be used as a valve seat. It is advantageously possible to mechanically machine the valve seat on the housing part in a trouble free manner.
The injection molded stop piece can be embodied very simply so that the stop piece can be used to produce a seal between the fuel inlet and the fuel return. The seal can also be produced by means of an additional sealing element that is inexpensive to produce, preferably an O-ring. However, the seal can also be produced with the aid of a seal formed directly onto the stop piece. This advantageously further reduces the number of
REFERENCES:
patent: 5076320 (1991-12-01), Robinson
patent: 5105787 (1992-04-01), Imoehl
patent: 5226392 (1993-07-01), Breuer et al.
patent: 5609138 (1997-03-01), Mutschler
Baechle Ludwig
Gregorius Thomas
Herbst Kurt
Hoepft Roland
Schwegler Helmut
Greigg Edwin E.
Greigg Ronald E.
Hepperle Stephen M.
Robert & Bosch GmbH
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