Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle brake pad

A vehicle braking and lining technology, applied in friction linings, noise/vibration control, mechanical equipment, etc., can solve the problems of deterioration of vibration damping capacity, deterioration of NVH characteristics, etc., to improve noise damping capacity and braking accuracy. and the effect of improving stability and reducing production costs

Active Publication Date: 2017-06-27
HYUNDAI MOTOR CO LTD
View PDF12 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature is outside the specific temperature range, the vibration damping ability deteriorates significantly, resulting in deterioration of NVH characteristics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle brake pad
  • Vehicle brake pad
  • Vehicle brake pad

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.

[0035] Throughout the drawings, the same reference numerals designate the same or similar parts. Under this rule, description may be made with reference to multiple figures at the same time, and details that may be considered obvious or repetitive to one of ordinary skill in the art may be omitted in this specification.

[0036] The vehicle brake lining according to one embodiment of the invention describes a simplified structure without shims and a specific structure in which the constituent layers have different temperature ranges which ensure the specific damping capacity (SDC ) to attenuate noise with a sound frequency of 20-20000 Hz at a temperature of 100-300°C. Therefore, the present invention increases the temperature range in which noise attenuation of audible ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
dielectric loss factoraaaaaaaaaa
Login to View More

Abstract

A vehicle brake pad includes a back plate layer, an underlayer, an adhesive layer that mediates between the back plate layer and the underlayer, and a friction material layer, wherein the vehicle brake pad does not include a shim and wherein at least one of the back plate layer, the adhesive layer, and the underlayer has a loss factor of 0.2 or higher, calculated according to the following Equation 1, at temperatures from -100 to 300 DEG C to damp noise of a frequency range of 200 to 20,000 Hz at temperatures from -100 to 300 DEG C: (Equation 1) Loss factor eta=(f2-f1) / f0, where eta is a loss factor, f0 is a noise frequency, f1 is a minimum value of amplitude of a noise frequency when a noise level is reduced by 3 dB, and f2 a maximum value of amplitude when the noise level is reduced by 3 dB.

Description

technical field [0001] The present disclosure relates to a brake lining. More specifically, the present disclosure relates to a vehicle brake lining that can increase the frequency range of noise that can be attenuated and increase the temperature range that ensures good damping capacity, and can be used without the use of shims. Improved durability. Background technique [0002] Brakes are one of the most important safety systems in your vehicle. Brakes are classified into disc brakes and drum brakes according to the technology that generates friction. Most current vehicles use disc brakes, which generate less heat and are less subject to degradation of braking force due to thermal deformation of the brakes than drum brakes. [0003] Disc brakes generate braking force using friction created by hydraulic pressure operated pads that are pressed against one or both surfaces of a disc that rotates along the wheel. [0004] figure 1 is a sectional view showing a conventiona...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCC09K3/14F16D69/02F16D2200/0004F16D2200/0056F16D65/0006F16D69/0408F16D2069/0466F16D2069/005
Inventor 李在永李润柱李秉燦韩在玟金润哲
Owner HYUNDAI MOTOR CO LTD