DE102023202889A1 - BRAKE PAD ARRANGEMENT - Google Patents

Abstract

A brake pad assembly is disclosed here. The brake pad assembly includes a back plate facing a brake disk, a friction pad disposed on a front surface of the back plate to be in contact with a friction surface of the brake disk, and a disc disposed on a rear surface of the back plate to reduce braking noise, wherein a fillet weld is performed on a side surface of the disc and the rear surface of the back plate, or the back plate includes a plurality of support members on the rear surface of the back plate.

Description

BACKGROUND

1. AREA

Embodiments of the present disclosure relate to a brake pad assembly, and more particularly to a brake pad assembly having a disc attached to a back plate.

2. DESCRIPTION OF THE STATE OF THE ART

Generally, vehicles necessarily have braking systems for braking. A caliper brake is one of such braking systems. In the caliper brake, a hydraulic or electronic mechanism and a brake pad are attached to a side surface of a brake disc that rotates along with the wheels of the vehicle, and when a pedal is depressed, the brake pad is pressed against the brake disc so that a frictional force generated thereby is used as a braking force to stop a vehicle.

In such a caliper brake, noise and vibration are inevitably generated when the brake disc comes into contact with the brake pad. In particular, a squeaking noise generated at a frequency between 100 Hz and 16,000 Hz is a problem, and brake engineers are looking for various methods to suppress the squeaking.

Typically, a disc or plate element is added to a back plate. In particular, a disc made of a metallic material is provided to change the frequency of the sound, or a disc made of an elastic material is provided to absorb or isolate the sound.

Conventionally, the coupling of the back plate and the disk has used a method that uses an adhesive or a method that attaches a separate member passing through the disk to the back plate. However, such coupling methods have a problem that the adhesive force of the adhesive decreases due to an increase in the internal temperature when the brake is applied, or the coupling becomes loose when the elastic material such as rubber is compressed. As a result, when the brake is applied, the disk on the back plate cannot completely suppress the squeak.

Therefore, in a brake pad assembly of a caliper brake, a device is needed in which a disc can be fixed to a back plate even when a brake is continuously applied.

STATE OF THE ART

PATENT DOCUMENT

Korean Patent Application Laid-Open No. 10-2010-0081115 2010 (Disclosed on July 14, 2010)

DEMOLITION

Therefore, it is an aspect of the present disclosure to provide a brake pad assembly that reduces the squealing noise of a caliper brake.

Another aspect of the present disclosure is to provide a brake pad assembly in which the position of a disc on a backing plate is maintained even as the internal temperature increases during continuous application of a caliper brake.

Another aspect of the present disclosure is to provide a brake pad assembly in which the position of a disc on a backing plate is maintained even when the disc is compressed during continuous application of a caliper brake.

It is another aspect of the present disclosure to provide a brake pad assembly in which the manufacturing cost of a brake is reduced by fixing the position of a disc on a back plate using a simple structure.

To achieve the stated object, a brake pad arrangement according to claim 1 or claim 4 is proposed. Particular embodiments are disclosed in the dependent claims.

According to one aspect of the present disclosure, a brake pad assembly includes a back plate facing a brake disk, a friction pad disposed on a front surface of the back plate to contact a friction surface of the brake disk, and a disc disposed on a rear surface of the back plate to reduce braking noise, wherein a fillet weld is performed on a side surface of the disc and the rear surface of the back plate.

The fillet weld can be partially carried out on the side surface of the disc.

The fillet weld can be made symmetrical to the disc.

According to another aspect of the present disclosure, a brake pad assembly includes a back plate facing a brake rotor, a friction pad disposed on a front surface of the back plate to contact a friction surface of the brake rotor, and a disc disposed on a rear surface of the back plate to reduce braking noise, the back plate including a plurality of support members supporting the disc on the rear surface of the back plate.

The support elements can be arranged symmetrically to the pane.

The support elements can be arranged near the vertices or corners of the disc or plate.

Each of the support members may be attached to the back plate and one side of each of the support members may be in contact with and support the disc.

The disc may have an adhesive layer on a surface of the disc that is in contact with the backing plate.

The disc may contain a metal layer containing copper.

The disc may contain an elastic layer made of an elastic material.

SHORT DESCRIPTION OF THE DRAWINGS

• 1 eine Seitenansicht ist, die eine Bremsbelaganordnung zeigt, bei der eine Kehlnahtschweißung an einer Seitenfläche einer Scheibe und einer hinteren Fläche einer Rückenplatte gemäß einem ersten Ausführungsbeispiel der vorliegenden Offenbarung ausgeführt ist, von der Seite gesehen;
• 2 eine Vorderansicht ist, die einen Zustand zeigt, in dem die Kehlnahtschweißung an der gesamten Seitenfläche der Scheibe und der hinteren Fläche der Rückenplatte gemäß dem ersten Ausführungsbeispiel der vorliegenden Offenbarung ausgeführt wird, von vorne gesehen;
• 3 eine Vorderansicht ist, die einen Zustand veranschaulicht, in dem eine Kehlnahtschweißung an einem Teil einer Seitenfläche einer Scheibe und einer hinteren Fläche einer Rückenplatte gemäß einem zweiten Ausführungsbeispiel der vorliegenden Offenbarung ausgeführt ist, von vorne gesehen;
• 4 eine Vorderansicht ist, die einen Zustand veranschaulicht, in dem ein Stützelement auf einer hinteren Fläche einer Rückenplatte vorgesehen ist und eine Scheibe in Kontakt mit dem Stützelement steht und von diesem gestützt wird, gemäß einem dritten Ausführungsbeispiel der vorliegenden Offenbarung, von vorne gesehen; und
• 5 eine Vorderansicht ist, die einen Zustand veranschaulicht, in dem eine Kehlnahtschweißung an einem Teil einer Seitenfläche einer Scheibe und einer hinteren Fläche einer Rückenplatte ausgeführt ist und ein Stützelement an der hinteren Fläche der Rückenplatte vorgesehen ist, um mit der hinteren Fläche in Kontakt zu sein und diese zu stützen, gemäß einem vierten Ausführungsbeispiel der vorliegenden Offenbarung, von vorne gesehen.

These and/or other aspects of the disclosure will become clear and better understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

• 1 is a side view showing a brake pad assembly in which fillet welding is performed on a side surface of a disk and a rear surface of a back plate according to a first embodiment of the present disclosure, viewed from the side;
• 2 is a front view showing a state in which fillet welding is performed on the entire side surface of the disk and the rear surface of the back plate according to the first embodiment of the present disclosure, viewed from the front;
• 3 is a front view illustrating a state in which fillet welding is performed on a part of a side surface of a disk and a rear surface of a back plate according to a second embodiment of the present disclosure, viewed from the front;
• 4 is a front view illustrating a state in which a support member is provided on a rear surface of a back plate and a disk is in contact with and supported by the support member according to a third embodiment of the present disclosure, viewed from the front; and
• 5 is a front view illustrating a state in which fillet welding is performed on a part of a side surface of a disk and a rear surface of a back plate and a support member is provided on the rear surface of the back plate to contact and support the rear surface, according to a fourth embodiment of the present disclosure, viewed from the front.

DETAILED DESCRIPTION

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The following embodiments are provided to fully convey the spirit of the present disclosure to those skilled in the art. The present disclosure is not limited to the embodiments disclosed herein and may be implemented in various forms. In the drawings, parts unrelated to the description may be omitted to make the present disclosure clearer, and components may be exaggerated to facilitate understanding of the present disclosure.

1 is a side view illustrating a brake pad assembly 10 in which the fillet weld 340 is performed on a side surface of a disk 300 and a rear surface of a back plate 100 according to a first embodiment of the present disclosure, viewed from the side, and 2 is a front view illustrating a state in which the fillet weld 340 is formed on the entire side surface of the disk 300 and the rear surface of the back plate 100 according to the first embodiment. exemplary embodiment of the present disclosure, viewed from the front.

As in the 1 and 2 As shown, the brake pad assembly 10 in a brake caliper includes the back plate 100, a friction pad 200, and the disc or shim or pad or intermediate layer 300.

The back plate 100 is arranged to face a brake disk, and the friction pad 200 may be arranged on a front surface of the back plate 100 and come into contact with a friction surface of the brake disk.

Since the caliper brake uses frictional force as braking force, noise and vibration are generated when the brake is operated. A squeaking noise is specifically a noise with a frequency between 1,000 Hz and 16,000 Hz that is unpleasant for a passenger.

The disk 300 is a member for reducing braking noise. The disk 300 is in the form of a plate and is disposed on the rear surface of the back plate 100. The disk 300 may include a metal layer 320 or an elastic layer 330 for noise reduction, and the disk 300 may include an adhesive layer 310 that is in contact with the back plate 100.

The metal layer 320 may contain copper. In the copper-containing metal layer 320, a higher damping is achieved compared to other materials, such as steel, due to its internal structure at high temperatures. In addition, the copper-containing metal layer 320 separates the vibrations generated by the brake in normal, radial and tangential directions in order to improve the noise behavior.

The elastic layer 330 may be formed of an elastic material such as rubber. The elastic layer 330 formed of an elastic material may absorb or dampen noise in a dynamic sense.

The adhesive layer 310 may be disposed on one side in contact with the back plate 100 to secure the disc 300 to the back plate 100.

Typically, an adhesive layer 310 in the form of an adhesive or a separate member that passes through the disk 300 is used to firmly connect the disk 300 to the back plate 100. However, during operation of the brake, a problem occurs in which the connection between the back plate 100 and the disk 300 loosens because the adhesive force of the adhesive layer 310 decreases due to a high temperature condition in the brake or the volume of the disk 300 decreases due to a high pressure condition in the brake. That is, there is a problem that the disk 300 moves on the back plate 100 and thus the squeaking cannot be reduced. Accordingly, the embodiments of the present disclosure use the fillet weld 340 or provide a separate support member 110 to fix the disk 300 to the back plate 100 during operation of the brake.

The fillet weld 340 is a welding method for joining two materials by welding a base material and another material in a triangular shape along an intersection line. In the first embodiment of the present disclosure, the fillet weld 340 is performed between the entire side surface of the shim 300 and the back surface of the back plate 100, as shown in FIGS. 1 and 2 In the disk or intermediate layer 300 in which the adhesive layer 310, the metal layer 320 and the elastic layer 330 are stacked one after the other, the fillet weld 340 can be carried out only on one side surface of the adhesive layer 310 and one side surface of the metal layer 320, so that a volume change of the elastic layer 330 is not influenced.

3 is a front view illustrating a state in which a fillet weld 340 is performed on a part of a side surface of a shim 300 and a back surface of a back plate 100 according to a second embodiment of the present disclosure, as viewed from the front. Unlike the first embodiment in which the fillet weld is performed on the entire side surface of the shim 300, in the second embodiment of the present disclosure, a partial side surface of the shim 300 is welded.

When the partial fillet weld 340 is performed on the side surface of the disk 300, the fillet weld 340 may be performed symmetrically to the disk 300. However, in the present disclosure, a shape or arrangement by the partial fillet weld 340 is not limited to the embodiment of the present disclosure, and the present disclosure includes any shape or arrangement capable of firmly connecting the disk 300 to the back plate 100.

4 is a front view illustrating a state in which a support member 110 is provided on a rear surface of a back plate 100 and a disk 300 is in contact with and supported by the support member 110 according to a third embodiment of the present disclosure, as viewed from the front.

Referring to 4 In contrast to the first and second embodiments, in the third embodiment the support element 110 is provided instead of the fillet weld 340.

The support member 110 is provided so as to protrude from the rear surface of the back plate 100. That is, the support member 110 may be fixed to the back plate 100, and one side thereof may be in contact with and support the disk 300. In this case, the support member 110 may be attached by driving a rivet or a nail into the rear surface of the back plate 100. The support member 110 fixes the disk 300 to the back plate 100 without deforming the shape of the disk 300, for example, by penetrating through the disk 300. Accordingly, the disk 300 can be stably fixed to the back plate 100 even when the adhesive force of an adhesive layer 310 decreases at high temperature or when the volume of the disk changes due to compression of the disk 300 at high pressure.

The support element 110 may be provided as a plurality of support elements 110 and arranged on the rear surface of the back plate, and referring to the 4 In this case, the support elements 110 in the third embodiment of the present disclosure may be arranged near the vertices of the disk 300 and symmetrically with respect to the disk 300.

The support elements 110 have the advantage that they can fix the disc 300 to the back plate 100 more stably than the fillet weld 340. On the other hand, the fillet weld 340 has the advantage that it is easy to implement compared to the support element 110 and can be easily used even when the support elements 110 are difficult to install depending on the type of back plate 100.

5 is a front view illustrating a state in which a fillet weld 340 is performed on a part of a side surface of a disk 300 and a rear surface of a back plate 100 and support members 110 are provided on the rear surface of the back plate 100 to be in contact with and support the disk 300 according to a fourth embodiment of the present disclosure, as viewed from the front.

Referring to 5 In a method for attaching the disk 300 to the back plate 100 according to the fourth embodiment of the present disclosure, both the partial fillet weld 340 of the second embodiment and the support element 110 of the third embodiment are provided.

Specifically, according to the fourth embodiment of the disclosure, the support members 110 are arranged near four vertices of the disk 300, and the fillet weld 340 is performed between the support members 110 on four surfaces of the disk 300. In this case, the support members 110 may be arranged symmetrically, and the fillet weld 340 may be performed symmetrically with respect to the disk 300. Accordingly, when attaching the disk 300 to the back plate 100, both the advantage of the fillet weld 340 and the support members 110 can be utilized.

In the brake pad assembly 10 according to the present embodiment having such a structure, in order to fix the disk 300, which includes an adhesive layer 310, a metal layer 320, and an elastic layer 330 and is capable of reducing squeaking noise, to the back plate 100, the support members 110 are provided on the back plate 100, or a fillet weld 340 is performed between the side surface of the disk 300 and the rear surface of the back plate 100. Accordingly, the disk 300 can be prevented from moving on the back plate 100 even if the adhesive force of the adhesive layer 310 decreases when the internal temperature of the brake increases or the volume of the disk 300 changes due to compression of the disk 300 under high pressure according to the operation of a brake. That is, the disk 300 can stably reduce a squealing noise by being held in a state where the disk 300 is fixed to the back plate 100. Since the fillet weld 340 is formed with a simple structure or the support members 110 have a simple structure, the manufacturing cost of the brake can be reduced, thereby improving the marketability of a vehicle.

As can be seen from the above description, a brake pad assembly is provided in which the squeal of a caliper brake is reduced.

A brake pad arrangement in which the position of a disc on a backing plate is maintained even when the internal temperature increases during continuous operation of a caliper brake.

A brake pad assembly in which the position of a disc on a backing plate is maintained even when the disc is compressed when a caliper brake is continuously applied is provided.

A brake pad assembly in which the manufacturing cost of a brake is reduced by fixing the position of a disc on a back plate using a simple structure is provided.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• KR 10201000811152010 [0007]

Claims (10)

A brake pad assembly (10) comprising: a back plate (100) facing a brake disk; a friction pad (200) disposed on a front surface of the back plate (100) to be in contact with a friction surface of the brake disk; and a disk (300) disposed on a rear surface of the back plate (100) to reduce braking noise, wherein a fillet weld (340) is performed on a side surface of the disk (300) and the rear surface of the back plate (100). Brake pad arrangement (10) according to Claim 1 , wherein the fillet weld (340) is partially carried out on the side surface of the disc (300). Brake pad arrangement (10) according to one of the Claims 1 or 2 , wherein the fillet weld (340) is symmetrical with respect to the disc (300). A brake pad assembly (10) comprising: a back plate (100) facing a brake disk; a friction pad (200) disposed on a front surface of the back plate (100) to be in contact with a friction surface of the brake disk; and a disk (300) disposed on a rear surface of the back plate (300) to reduce braking noise, wherein the back plate (100) comprises a plurality of support members (110) supporting the disk (300) on the rear surface of the back plate (100). Brake pad arrangement (10) according to claim 4 , wherein the support elements (110) are arranged symmetrically with respect to the disc (300). Brake pad arrangement (10) according to one of the Claims 4 or 5 , wherein the support elements (110) are arranged near the corner points of the disc (300). Brake pad arrangement (10) according to one of the Claims 4 until 6 wherein: each of the support members (110) is secured to the back plate (100); and one side of each of the support members (110) is in contact with and supports the disc (300). Brake pad arrangement (10) according to one of the Claims 1 until 7 wherein the disc (300) has an adhesive layer (310) on a surface of the disc (300) that is in contact with the back plate (100). Brake pad arrangement (10) according to one of the Claims 1 until 8 , wherein the disc (300) has a copper-containing metal layer (320). Brake pad arrangement (10) according to one of the Claims 1 until 9 , wherein the disc (300) has an elastic layer (330) made of an elastic material.

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