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Actuator for parking brake

A technology of parking brakes and actuators, applied in the direction of brake types, brake components, brake actuators, etc., can solve the problems of complex manufacturing and assembly of cages, complex facilities, etc.

Active Publication Date: 2013-03-20
FRENI BREMBO SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In both cases, cage fabrication and its assembly were shown to be very complex due to the number of parts required and the sequence and number of steps
Furthermore, complex facilities are required both during the insertion of the retaining ring and when the cage is folded during the cage assembly step

Method used

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  • Actuator for parking brake
  • Actuator for parking brake
  • Actuator for parking brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Referring to the above-mentioned figures, an actuator for a parking brake according to the invention is generally indicated at 10 . In particular, this is a disc brake.

[0021] refer to figure 1 , the actuator comprises a housing 12 defining a recess 14 . According to a possible embodiment, the housing is provided by the body of the disc brake caliper, preferably also operating as a service brake.

[0022] According to a possible embodiment, the actuator 10 comprises a drive device 16 operatively interposed between a drive member 18 and a not shown brake member. In the case of a disc brake, the braking member is constituted by, for example, a brake pad housed in a caliper.

[0023] According to what has been illustrated in the figures, the drive member is formed, for example, by a rod that rotates about the drive axis 20 . Such a rod has an end adapted to be fastened to an actuation cable eg actuatable by a pedal or handle inside the inner chamber. There is also p...

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PUM

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Abstract

The invention relates to an actuator (10) for parking brake comprising a housing (12) defining a recess (14), and driving means (16) operatively interposed between a driving member (18) and a braking member. The driving means (16) are at least partially housed in the recess (12), and comprise a first washer (26), a second washer (28) translatable relative to the first washer (26) along a drive axle (20) upon the action of the driving member (18), and a pushing device (30) translatable along the drive axle (20) following the relative movement of the two washers. The pushing device (30) is operatively associated to the braking member. The actuator further comprises a cage (56) adapted to at least partially house first washer (26), second washer (28), and a portion of the pushing device (30), and to define an abutment for return means (58). The cage (56) comprises snap-coupling portions on the first washer (26).

Description

technical field [0001] The invention relates to an actuator for a parking brake. Background technique [0002] It is known that the actuator is housed within a caliper that also typically operates as a hydraulic service caliper. When used as a service brake, as the hydraulic pressure in the brake circuit increases, pistons housed in the calipers push the corresponding brake pads towards the brake discs associated to the wheels. When used as a parking brake, the piston can further be operated by mechanical means comprising, for example, a drive rod rotating about a drive axis following drive applied on a pedal or handle inside the inner chamber. The mechanism operating the piston can comprise two washers capable of relative translation along the drive axis as the drive rod rotates. [0003] Such actuators are not without drawbacks. In fact, it is known to provide a cage housing two gaskets. In some cases, the cage extends radially outward and then terminates axially on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/18
CPCF16D2125/36F16D2123/00F16D2121/02F16D2121/14F16D65/567F16D65/18
Inventor 沃尔特·卡诺瓦安德烈亚·泰鲁齐达维德·伦齐
Owner FRENI BREMBO SPA