Power plants – Pressure fluid source and motor – Pulsator
Patent
1997-09-04
2000-05-23
Ryznic, John E.
Power plants
Pressure fluid source and motor
Pulsator
60533, 92161, B60T 1300, F01B 2900
Patent
active
06065290&
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a brake-control device comprising a vacuum-type booster, a master cylinder and an electro-hydraulic module for controlling the braking pressure, in which device the booster has a front shell and a rear shell of cylindro-frustoconical shape and of given respective outside radii and in which the master cylinder and the module are secured to the front shell.
BACKGROUND OF THE INVENTION
In a device of this type, at least known to those skilled in the art through public use, the electro-hydraulic module is mounted on a mounting plate itself carried by the mechanical connection which joins the master cylinder to the front shell of the booster.
However, bearing in mind the weight of the module, such a solution requires a modification to the thickness of the front shell, the arrangement and dimensions of the mechanical connection between the booster and the master cylinder, and therefore also the booster and the master cylinder at this mechanical connection.
SUMMARY OF THE INVENTION
The invention falls within this context and its object is to propose a brake-control device which, although composed of the same components and having the same compactness, can be produced from standard components without increasing the amount of material in, or making major modifications to, the components.
To this end, the brake-control device according to the invention is essentially characterized in that the module is secured to the front shell at least at three fixing points which belong to a peripheral ring of the front shell, delimited by an inside radius at least equal to half the outside radius of the front shell.
In practice, it is preferable to secure the module to the front shell by means of at least two straps.
The module can be held in place even better by giving the peripheral ring an inside radius substantially equal to the outside radius of the front shell.
In this case, the fixing points preferably belong to hooping encircling the front shell, it being possible for this hooping to be crimped, with the front shell, to the rear shell.
Further characteristics and advantages of the invention will emerge clearly from the description thereof which is given hereafter by way of non-limiting indication with reference to the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view of a brake-control device which is known through prior public use;
FIG. 2 is a front-on view of the device of FIG. 1;
FIG. 3 is a side view of a brake-control device in accordance with a first embodiment of the invention;
FIG. 4 is a front-on view of the device of FIG. 3;
FIG. 5 is a side view of a brake-control device in accordance with a second embodiment of the invention;
FIG. 6 is a front-on view of the device of FIG. 5;
FIG. 7 is a side view of a brake-control device in accordance with a third embodiment of the invention;
FIG. 8 is a front-on view of the device of FIG. 7;
FIG. 9 is an enlarged sectional view of region 9 of the device of FIG. 7;
FIG. 10 is a side view of a brake-control device in accordance with a fourth embodiment of the invention; and
FIG. 11 is a front-on view of the device of FIG. 10.
DETAILED DESCRIPTION OF THE INVENTION
The invention applies to a brake-control device of a type known per se (FIGS. 1 and 2) comprising a vacuum booster 1, a master cylinder 2, provided with a reservoir 20, and an electro-hydraulic module 3 allowing the braking pressure which normally comes from the master cylinder 2 to be controlled, for example in order to prevent the wheels from locking and/or spinning.
The booster traditionally includes a front shell 10 and a rear shell 11, these shells both having a cylindro-frustoconical shape and having very similar respective outside radii R10 and R11, the master cylinder 2 being secured to the front shell 10 by means of nuts 5 and bolts 4.
In the known device, the module 3 is carried by a mounting plate 6, an extension 60 of which is trapped between the booster 1 and the master cylinder 2 by means of the nuts and bolts such as 5 and 4 used to secure t
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Leboisne Cedric
Verbo Ulysse
Bosch Systems de Freinage
Comstock Warren
McCormick, Jr Leo H
Ryznic John E.
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