Housing block

Details Housing block Housing block

1999-09-20

2001-01-23

Fox, John (Department: 3753)

Fluid handling

With closure

C072S067000, C072S335000

Reexamination Certificate

active

06176266

ABSTRACT:

PRIOR ART
The invention is based on a housing block for a hydraulic subassembly of a brake system for a motor vehicle.
The reference WO 97/12790 has disclosed a housing block of this generic type for a hydraulic subassembly of a motor vehicle brake system. The housing block has bores for receiving hydraulic valves, pump elements, and accumulator pistons, as well as connecting bores for hydraulic brake lines and hydraulic conduits inside the housing block for connecting the hydraulic valves at least with the connecting bores, wherein the conduits are sealed in relation to the outside. The conduits are produced by boring holes starting from at least one housing block side and by inserting a plug into the beginnings of such holes so that they have plugs. The plug parts are alternatively embodied in the form of balls that can be press-fitted, specially formed stoppers, or cover caps formed out of sheet metal. In order to fix the position of the plug parts, which can be subjected to a high degree of hydraulic stress, the reference proposes forming caulking beads out of the material of the housing block that are directed toward the plug parts. The caulking beads can thereby additionally be used as sealing elements.
ADVANTAGES OF THE INVENTION
The housing block, which can be used in a hydraulic vehicle brake system, has the advantage that the cost for producing, inserting, and if need be press-fitting plug parts such as balls, stoppers, covers, or the like is eliminated. Consequently, the previously required storage, as well as the expenditure for separation, transportation, and assembly devices are eliminated.
The disclosure sets forth an inexpensive process for producing the housing block wherein depending on the process, in comparison to the compressive force expenditure for an extrusion die, lesser forces already suffice for the penetration of the wobble tool into the housing block and the resultant production of the closure.


REFERENCES:
patent: 4313248 (1982-02-01), Fujikake
patent: 6018976 (2000-02-01), Wolf

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