Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1992-07-14
1994-01-04
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
137884, 25112915, B60T 832
Patent
active
052754782
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is based on a mounting unit, comprising a valve block assembly and a control unit, as defined hereafter.
A mounting unit of this kind is already known (German Offenlegungsschrift 38 13 138), in which the control unit is joined to the valve block assembly using a frame-like adaptor part inserted between the two. Electrical bonding of the valves of the valve block assembly to the control unit is done with the aid of contact prongs, which are part of a stamped grid that forms conduction segments in a housing wall of the control unit. These contact prongs engage spring contact elements of the valves. Because of the engagement of the contact prongs with the spring contact elements that occurs when the control unit is joined to the valve block assembly, very close tolerances must be adhered to when the valves are installed in the valve block assembly, in order to assure a secure electrical connection. Moreover, the control unit is relatively complicatedly made of a plurality of plate-like housing walls, which extend parallel to the plane separating the control unit in the valve block assembly and are joined to a frame by riveting or adhesive bonding. Since the walls carry electronic components, electrically bonded leads must be joined together in various planes. In the known control unit this is done by soldering, after the housing walls and frame are installed; because the soldering points are located at some depth in the control unit, increased labor is required. Another disadvantage of the prior art mounting unit is that the valves are closely adjacent to one of the control unit walls that carries electronic components. These components are therefore subjected to increased strain from the coils of the valves, which give off heat. Although the outer aluminum wall of the control unit is intended to dissipate heat to the ambient air, the wall has a ceramic support plate on the inside, with electronic components, and if this wall suffers sudden strain the danger exists that the support plate will be destroyed, with the consequence of failure of the control unit.
ADVANTAGES OF THE INVENTION
The mounting unit according to the invention, comprising a valve block assembly and a control unit an advantage over the prior art that first, the heat transfer from the valves of the valve block assembly to the control unit is reduced, and second, production and assembly tolerances of the valves have no influence on the relationship between contact sheaths of the valve block assembly and the contact prongs of the control unit. Moreover, the embodiment of the control unit has advantages for mounting purposes and protects the control unit against mechanical attack.
Advantageous further features of and improvements to the mounting unit disclosed are possible with the provisions recited hereinafter.
The embodiment recited herein simplifies the connection of the valves considerably and increases the security of the electrical connections.
With a the further feature of the assembly unit defined herein, secure connections of the leads and contacts are attained, which can be produced simply with the housing part mounted on the valve block assembly, because of the great accessibility.
The provision set forth has the advantage of a placement of the ceramic plate in a manner favorable for mounting purposes, with its electric components readily accessible for testing and electrical bonding purposes.
As a result of the further feature of the mounting unit recited, secure, protected lead connections are attained that enable bonding of the electrical components of the control unit in a manner favorable for mounting.
DRAWING
An exemplary embodiment of the invention is shown in simplified form in the drawing and described in further detail in the ensuing description. Shown are
FIG. 1, a view of a mounting unit comprising a valve block assembly and a control unit, and
FIG. 2, a detail, shown in section, of the mounting unit on a different scale.
DESCRIPTION OF THE EXEMPLARY EMBODIMENT
The moun
REFERENCES:
patent: 5040853 (1991-08-01), Burgdorf et al.
patent: 5137455 (1992-08-01), Moerbe et al.
Moerbe Matthias
Schmitt Edgar
Greigg Edwin E.
Greigg Ronald E.
Oberleitner Robert J.
Robert & Bosch GmbH
Young Lee W.
LandOfFree
Mounting unit, comprising a valve block assembly and a control u does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mounting unit, comprising a valve block assembly and a control u, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mounting unit, comprising a valve block assembly and a control u will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-302464