Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1991-05-16
1994-03-15
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
25112915, 336 92, H01F 500, F16K 3102
Patent
active
052949044
DESCRIPTION:
BRIEF SUMMARY
INTRODUCTION
The present invention relates to a valve block, in particular for slip-controlled hydraulic brake systems according to the preamble of claim 1.
BACKGROUND OF THE INVENTION
A like valve block is known from patent application P 37 01 019.0. The external housing of the valve block is fixed on the valve block housing by a catch-type arrangement in this design, and the electric conductors and the magnet coils are soldered and are guided with a contact member designed as a multipoint plug in the housing cover to connect to a control unit. The requirement of a separate housing cover and soldering of the coils and the conducting paths have to be regarded as not favorable, since the comparatively great expenditure entailed for soldering the conducting path and the coils has adverse affects on manufacturing costs. Moreover, the complicated assembly of the large number of component parts, the risk of corrosion in the event of insufficient plug sealing and cover sealing as well as the insufficient heat emission through the housing cover and the heat expansion resulting therefrom are regarded as disadvantageous in the known conventional valve block design.
BRIEF DESCRIPTION OF THE INVENTION
Therefore, the present invention has for its object to improve upon a valve block of the species referred to initially to such effect that the aforementioned shortcomings are overcome and there is accomplished considerable simplification of the linkage technology, while the modular design is taken into consideration at the same time, as well as augmented ease of repair.
This object is achieved according to the present invention by the features characterizing patent claim 1.
An advantageous embodiment of this invention resides in compensating for fit-responsive and temperature-responsive variations between magnet coil and contact carrier by virtue of elastic linkages which permit to relieve the current conductors embedded in the elastic linkages from tensile load, preferably by way of small-surface resilient-tab-like or spider-type linkings.
Furthermore, it is provided by the subject matter of this invention to combine the insulating stuffing of the magnet coil in the yoke with the manufacture of the contact carrier by shaping the contact carrier out of the same insulating material in one working operation by plastic injection moulding.
Besides, the embodiment of the subject matter of this invention permits to position the current conductors on the magnet coils as desired in relation to the valve block housing--irrespective of their design, no matter whether cable, punched grid or wire--and to subsequently extrusion-coat them with the contact carrier in an anti-corrosion as well as tension-relieving manner.
Further features, advantages and possibilities of application of this invention can be gathered from the description of a plurality of drafted embodiments which will be described in more detail hereinbelow.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings,
FIG. 1, is a partial cross-sectional view of the inventive valve block;
FIG. 2, is the top view on the valve block showing three designs of the linkage between contact carrier and magnet coil;
FIG. 3, is an alternative form of presentation showing the side view of the valve block with the inventive membrane-type linkage between contact carrier and magnet coil;
FIG. 4, is a spatial presentation of the spider-type or, respectively, S-shaped elastic linkage between the contact carrier and the magnet coil.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION
FIG. 1 shows a section of a valve block with a magnet coil 1 which is shown in partial cross-section, which is extrusion-coated by insulating material 10 in a yoke 9, with magnet coil wire designed as current conductor 4 extending out of the yoke 9 in direct linkage and being shaped to form a contact carrier 2 preferably in one working operation by being extrusion-coated with the insulating material 10. To fasten the contact carrier 2 on a valve block housing 8, preferably, there is provis
REFERENCES:
patent: 3949338 (1976-04-01), Burson
patent: 4898360 (1990-02-01), VonHayn et al.
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