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Friction plate detection and alarm system for fixed brake caliper of vehicle disc brake

A disc brake and friction plate technology, which is applied in the direction of brake safety system, brake, brake type, etc., can solve the problems of complex process of arranging parallel resistors, single alarm judgment conditions, and large changes in the structure of the brake caliper, so as to achieve practical The effect of high value, untimely resolution of alarms, and low cost of transformation

Active Publication Date: 2021-12-21
KUNTAI VEHICLE SYST CHANGZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that: this solution needs to set up chutes perpendicular to the surface of the brake disc on both sides of the inner side of the brake bracket, and respectively set bumps corresponding to the chutes at both ends of the back plate of the friction plate, which is very difficult for the brake caliper. The structural changes are relatively large, and the cost is high; the alarm judgment conditions are single, and the alarm has no grades, and it is easy to cause untimely alarms and false alarms, etc., resulting in greater safety hazards
The disadvantages of this solution are: due to the small thickness of the friction plate itself, the arrangement of parallel resistors requires a complicated process, and the structure of the friction plate needs to be modified; False alarms and other situations, thus causing a greater safety hazard

Method used

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  • Friction plate detection and alarm system for fixed brake caliper of vehicle disc brake
  • Friction plate detection and alarm system for fixed brake caliper of vehicle disc brake
  • Friction plate detection and alarm system for fixed brake caliper of vehicle disc brake

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Experimental program
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Embodiment 1

[0043] See figure 1 , the friction plate detection and alarm system of the fixed brake caliper of the vehicle disc brake of the present embodiment includes a vehicle ECU1, a piston displacement sensor 2 electrically connected with the vehicle ECU1, a brake pedal stroke sensor 3 and an audible and visual alarm device 4.

[0044] The piston displacement sensor 2 is used to measure the displacement of the piston relative to the inner wall of the cavity. The specific method is: a rectangular rubber ring 6 for adjusting the brake clearance is installed on the outside of the piston, and the piston displacement sensor 2 is installed on the side of the fixed brake caliper 7. In the cavity of the piston cylinder, the displacement of the rectangular rubber ring 6 is detected, and the displacement of the piston relative to the inner wall of the cavity is reflected by the displacement of the rectangular rubber ring 6 . The principle is: when the friction plate 5 is worn, the piston will ...

Embodiment 2

[0070] This embodiment is basically the same as Embodiment 1, except that the vehicle disc brake of this embodiment adopts a double-sided four-cylinder brake caliper, and four piston displacement sensors are respectively installed in four piston cylinder cavities for Measure the displacement of the four pistons relative to the inner wall of the cavity.

[0071] In this embodiment, the wear thickness of the friction lining of the two-way four-cylinder fixed brake caliper can be estimated by the following method:

[0072] 1) After the vehicle is braked for the first time, the ECU records the coordinate x of the cross-section center of the piston end obtained through the signal of the piston displacement sensor at this time in the global coordinate system 10 、x 20 、x 30 、x 40 .

[0073] 2) When the piston of the hydraulic cylinder completes the nth (n≠1) braking, the ECU obtains the center coordinate positions x of the four piston end sections measured by the piston displacem...

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Abstract

The invention discloses a friction plate detection and alarm system for a fixed brake caliper of a disc brake for a vehicle, comprising a vehicle ECU, a piston displacement sensor electrically connected to the vehicle ECU, a brake pedal stroke sensor and an audible and visual alarm device; The piston displacement sensor is used to measure the displacement of the piston relative to the inner wall of the cavity; the brake pedal stroke sensor is used to input the brake pedal stroke signal to the vehicle ECU and to record the number of braking times; the sound and light alarm device It is used to prompt the driver to replace the friction lining; the vehicle ECU formulates a multi-level alarm strategy based on the signals collected by the piston displacement sensor and the brake pedal travel sensor, and controls the sound and light alarm device to alarm in due course. The vehicle ECU of the present invention formulates a multi-level alarm strategy based on the signals collected by the piston displacement sensor and the brake pedal stroke sensor, and controls the sound and light alarm device to alarm in good time. The modification of the brake caliper structure is small, the modification cost is low, and the practical value is high.

Description

technical field [0001] The invention relates to a friction plate detection and alarm system for a fixed brake caliper of a vehicle disc brake. Background technique [0002] At present, disc brakes have gradually replaced drum brakes as the mainstream solution for vehicle brakes. Friction brake pads are consumable items. If excessive wear occurs, it will seriously affect the braking performance of the vehicle and affect the safe driving of the vehicle. Therefore, it is particularly important to be equipped with an alarm device that detects the thickness of the friction plate. At present, the mainstream friction plate thickness monitoring and alarm system scheme is as follows: [0003] 1. The Chinese patent document with the patent application number CN201520000659.7 discloses "An Automobile Disc Brake Friction Pad Thickness Detection and Alarm Device". The technical solution in this patent document uses the interaction between the Hall element and the magnetic steel to dist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D66/02B60T17/22
CPCF16D66/028F16D66/027B60T17/22B60T2220/04
Inventor 陈晨杨梁符修齐章国栋
Owner KUNTAI VEHICLE SYST CHANGZHOU CO LTD