Brakes – Vehicle – Railway
Patent
1997-02-27
1998-09-29
Oberleitner, Robert J.
Brakes
Vehicle
Railway
188 729, F16D 6516, F16D 6532
Patent
active
058134999
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND AND SUMMARY OF THE INVENTION
The invention relates to a brake caliper unit for disc brakes having a pair of interconnected caliper levers.
In the case of brake caliper units of the concerned type (EP-0132 601 B1, EP-0 499 971 B1), it is customary, for the brake operation, to spread apart the ends of the caliper levers connected in the center by means of a connecting rod optionally constructed as a slack adjusting device by of a brake power unit, particularly a brake cylinder arranged between these ends. It is also known to link the brake cylinder to the central regions of the caliper levers coupled on the end side by an a sleek adjusting device. In this case, it is also known to provide slack adjusting devices integrated in the brake power unit. In all these arrangements, the central linking region of the caliper levers must be situated radially outside the brake disk diameter, and the caliper levers therefore have a considerable length from these linking regions to the linking point of the brake pads. Therefore, for achieving sufficiently large linkage ratios, the calipers levers, as a whole, must be constructed to be very long and therefore, particularly with respect to the required stability, to be very heavy. For avoiding this deficiency, it is known to displace the central linking region of the caliper levers into regions laterally of the brake disk and thereby shorten the caliper lever portion to the brake pad. However, for this purpose, high-expenditure, expensive connection linkages are required for the central caliper lever regions with optionally additional moving joints which were not accepted in practice.
In the case of a disk brake of a different type (DE-30 32 992 A1), it is known to apply the caliper levers by spring force and to release them by a rotary-field magnet which acts by way of an eccentric and has a step-down gear.
It is an object of the invention to develop a brake caliper unit of the initially mentioned type in a simple manner such that, while its space requirement and weight are low, it permits a compact construction and high transmission ratio.
The features of the characterizing part of claim 1 are used for achieving this object.
Advantageous embodiments and further developments of the invention for brake caliper units constructed in this manner are indicated in additional characteristics of the subclaims.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawing illustrates an advantageous embodiment of a, brake caliper unit constructed according to he invention.
FIG. 1 is a partially cut-open top view;
FIG. 2 is a partially cut-open lateral view of the brake caliper unit; and
FIG. 3 is an enlarged detail from FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
According to FIG. 1, the brake caliper unit has two caliper levers 1 and 2 which extend horizontally and mutually approximately in parallel and laterally offset. To one of the ends of the caliper levers, two brake pads 3 and 4 are linked which can be swivelled about vertical axes D1 and D2 and which can be pressed against a brake disc 5 which reaches between them. The other ends of the caliper levers 1 and 2 are rotatably about the vertical axes B1 and B2 and linked to the two ends of a slack adjusting device 6 which is constructed as a pressure rod actuator and which can be operated by the swivelling of an operating device 7. As customary, the slack adjusting device 6 may have a spiral gear which is not shown and has a rotatable screwing part which is coupled by free wheeling mechanisms with the operating device 7 or a non-rotatable part; however, it may also be of a different known construction.
In their central regions, the two caliper levers 1 and 2 have links to a housing 8 which extends essentially between them. The caliper levers 1 and 2 have a double-cheeked construction, as illustrated in FIG. 2, which is a lateral view from the side of the caliper lever which is illustrated to be partially cut away with the two cheeks 9 and 10. The linking of the caliper lever 1 on the housing 8, as illustrated in
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Fuderer Erich
Sponfeldner Oskar
Staltmeir Josef
Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH
Oberleitner Robert J.
Schwartz Chris
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