Friction plate, brake plate, brake and automobile

Abstract

The present invention relates to a friction pad for use in automobile brakes. The right side of the friction pad serves as a friction surface. The upper side of the friction pad slopes downward from right to left, and the lower side of the friction pad slopes upward from right to left. The present invention also provides a brake pad comprising a base plate and the friction pad, wherein the friction pad is fixedly connected to the right side of the base plate. The present invention also provides a brake comprising the brake pad. The present invention also provides an automobile comprising the brake. The present invention can reduce or even eliminate braking noise by rationally designing the friction pad structure.

Description

Technical Field

[0001] The present invention relates to an automobile, in particular to a friction plate, a brake plate, a brake and an automobile. Background Art

[0002] like Figure 1 As shown, the brake pad in the prior art includes a base plate 101 and a friction pad 102. The friction pad 102 usually adopts a positive draft angle, and the side 103 of the friction pad 102 is a slope. The side of the friction pad 102 close to the brake disc is narrower and the side of the friction pad 102 close to the base plate 101 is wider. When the above-mentioned brake pad is in use, the brake disc wears under the friction of the friction pad, and grooves are formed on the worn parts of the brake disc, and convex parts are formed on both sides of the grooves; as the use time goes by, the thickness of the friction pad becomes thinner, and the positive draft angle causes the friction surface of the friction pad to become wider and wider, and the friction surface with increasing width gets closer and closer to the convex parts on both sides of the groove and presses more and more tightly, that is, when the friction pad and the brake disc have a certain amount of wear, the convex parts on both sides of the groove on the brake disc and the edge of the friction pad will produce abnormal friction, thereby generating braking noise; this braking noise is generally generated in the middle and late stages of the use of the friction pad. This braking noise is highly random and is generally high-frequency noise. This braking noise is particularly obvious during moderate and heavy braking. This braking noise will seriously affect the riding comfort of the driver and passengers. This braking noise is not easy to simulate in the early stage of vehicle development, so it is difficult to avoid. Summary of the Invention

[0003] The purpose of the present invention is to provide a friction plate, a brake plate, a brake and a vehicle to reduce or eliminate braking noise.

[0004] The friction plate of the present invention is applied to the brake of an automobile, wherein the right side of the friction plate is a friction surface, the upper side of the friction plate is inclined downward from right to left, and the lower side of the friction plate is inclined upward from right to left.

[0005] Optionally, the front side surface of the friction plate is tilted backward from right to left, and the rear side surface of the friction plate is tilted forward from right to left.

[0006] Optionally, the angle at which the front side surface tilts backward from right to left is not greater than 5°, and the angle at which the rear side surface tilts forward from right to left is not greater than 5°.

[0007] Optionally, the angle at which the upper side surface is tilted downward from right to left is not greater than 5°, and the angle at which the lower side surface is tilted upward from right to left is not greater than 5°.

[0008] Optionally, the left side of the friction plate is a bonding surface for bonding to the base plate of the brake pad.

[0009] Optionally, the friction plate is an integrally formed part.

[0010] The present invention further provides a brake pad, comprising a base plate and any one of the friction pads described above, wherein the friction pad is fixedly connected to the right side of the base plate.

[0011] Optionally, the friction plate is fixedly connected to the base plate by bonding.

[0012] The present invention also provides a brake comprising any one of the brake pads described above.

[0013] The present invention also provides a car comprising the brake.

[0014] The present invention has the following characteristics: by reasonably arranging the structure of the friction plate, the braking noise can be reduced or even eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the brake pad described in the background technology;

[0016] Figure 2 A schematic structural diagram of the brake pad described in a specific embodiment;

[0017] Figure 3 A schematic diagram of the operation of the brake pad described in the specific embodiment;

[0018] Figure 4 for Figure 3 Magnified view of section A.

[0019] Among them, 1 is friction plate; 2 is bottom plate; 3 is brake disc; 11 is friction surface; 12 is bonding surface; 13 is upper side surface; 14 is lower side surface; 31 is groove; 32 is convex part. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0021] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0022] like Figure 2 and Figure 3 A friction plate 1 is shown, which is used for automobile brakes. The right side of the friction plate 1 is a friction surface 11. The upper side 13 of the friction plate 1 is inclined downward from right to left, and the lower side 14 of the friction plate 1 is inclined upward from right to left.

[0023] With the above technical solution, the upper side surface 13 of the friction plate 1 is inclined downward from right to left, and the lower side surface 14 of the friction plate 1 is inclined upward from right to left. As the friction plate 1 is worn and thinned, the distance between the upper edge and the lower edge of the friction surface 11 gradually decreases, that is, as the friction plate 1 is worn and thinned, the width of the friction surface 11 gradually decreases, and the friction surface 11 becomes smaller and smaller as it is worn; Figure 3 and Figure 4 As shown, as the friction plate 1 wears and becomes thinner, the distance between the upper and lower edges of the friction surface 11 and the protrusions 32 on both sides of the groove 31 on the brake disc 3 will gradually increase, thereby avoiding the abnormal friction between the edge of the friction plate 1 and the protrusions 32 on both sides of the groove 31 on the brake disc 3 in the prior art, and can reduce or even eliminate braking noise, especially can reduce or even eliminate braking noise during medium / heavy braking.

[0024] In some embodiments, the front side of the friction plate 1 is tilted backward from right to left, and the rear side of the friction plate 1 is tilted forward from right to left. Using the above technical solution, the draft direction of the side surfaces of the peripheral side of the friction plate 1 is consistent, which is conducive to manufacturing the friction plate 1 by an integrated molding method.

[0025] In some embodiments, the front side surface tilts backward from right to left at an angle of no greater than 5°, and the rear side surface tilts forward from right to left at an angle of no greater than 5°. Using the above technical solution, the draft angle of the friction plate 1 is relatively small. The thickness of the friction plate 1 is generally around 10 mm. The difference in area between the cross-sections of the friction plate 1 with different thicknesses caused by the draft angle is relatively small. From a brand new state to a fully worn state, the area reduction rate of the friction surface 11 of the friction plate 1 is less than 0.5%, and the impact on the performance of the friction plate 1 is negligible.

[0026] In some embodiments, the upper side surface 13 tilts downward from right to left at an angle of no greater than 5°, and the lower side surface 14 tilts upward from right to left at an angle of no greater than 5°. Using the above technical solution, the draft angle of the friction plate 1 is relatively small. The thickness of the friction plate 1 is generally around 10 mm. The difference in area between the cross-sections of the friction plate 1 with different thicknesses caused by the draft angle is relatively small. From a brand new state to a fully worn state, the area reduction rate of the friction surface 11 of the friction plate 1 is less than 0.5%, and the impact on the performance of the friction plate 1 is negligible.

[0027] In some embodiments, the left side of the friction pad 1 serves as a bonding surface 12 for bonding to the brake pad's base plate 2. Adopting the above-described technical solution, the friction pad 1 and base plate 2 are fixedly connected by bonding, which reduces the manufacturing difficulty of the brake pad and facilitates forming the tilted directions of the upper side 13 and lower side 14, as well as the tilted directions of the front and rear sides of the friction pad 1. In the prior art, disc brake pads are typically formed by directly pressing a die onto the brake pad's base plate to heat-press the friction material. The die is then opened to form the friction pad onto the base plate. The friction pad forming and the connection between the friction pad and base plate are completed in one step. This means that conventional friction pads can only be molded with a positive draft angle, meaning the side of the friction pad closest to the brake disc is narrower and the side closest to the base plate is wider. This can easily cause brake noise during braking. Because the edge of the base plate must extend beyond the friction pad, this molding method makes it difficult to form a friction pad with a negative draft angle. This is one of the reasons why conventional friction pads typically use a positive draft angle.

[0028] In some embodiments, the friction plate 1 is a one-piece molded part. A reverse draft angle is used in the mold, so that the upper side 13 of the friction plate 1 slopes downward from right to left, and the lower side 14 of the friction plate 1 slopes upward from right to left. In practice, the friction plate 1 is formed separately using a complete mold and then bonded to the brake pad's base plate 2.

[0029] The present invention also provides a brake pad, such as Figure 2 and Figure 3 As shown, the brake pad includes a base plate 2 and any one of the friction plates 1 described above, and the friction plate 1 is fixedly connected to the right side of the base plate 2.

[0030] In some embodiments, the friction plate 1 is fixedly connected to the base plate 2 by bonding.

[0031] The present invention also provides a brake comprising any one of the brake pads described above.

[0032] As a preferred embodiment, the above-mentioned brake is a disc brake.

[0033] The present invention also provides a car comprising the brake.

[0034] The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the scope of protection of the present invention. In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. mean that the specific features, structures, materials or characteristics of the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0035] In the description of the present invention, it should be understood that the directions indicated by the terms "front", "back", "up", "down", "left", "right" and the like are based on the attached drawings. Figure 2 The orientations represented by the coordinate system are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

Claims

1. A friction plate, which is used for automobile brakes, characterized in that: The right side of the friction plate is the friction surface, the upper side of the friction plate is inclined downward from right to left, and the lower side of the friction plate is inclined upward from right to left, so that: as the friction plate wears and becomes thinner, the distance between the upper and lower edges of the friction surface and the convex parts on both sides of the brake disc groove gradually increases.

2. The friction plate according to claim 1, characterized in that The front side surface of the friction plate is inclined backward from right to left, and the rear side surface of the friction plate is inclined forward from right to left.

3. The friction plate according to claim 2, characterized in that: The angle at which the front side surface tilts backward from right to left is not greater than 5°, and the angle at which the rear side surface tilts forward from right to left is not greater than 5°.

4. The friction plate according to claim 1, characterized in that The angle at which the upper side surface is inclined downward from right to left is not greater than 5°, and the angle at which the lower side surface is inclined upward from right to left is not greater than 5°.

5. The friction plate according to claim 1, characterized in that: The left side of the friction plate is a bonding surface for bonding to the bottom plate of the brake plate.

6. The friction plate according to claim 1, characterized in that The friction plate is an integrally formed part.

7. A brake pad, characterized in that: It comprises a base plate and the friction plate according to any one of claims 1 to 6, wherein the friction plate is fixedly connected to the right side of the base plate.

8. The brake pad according to claim 7, wherein: The friction plate is fixedly connected to the base plate by bonding.

9. A brake, characterized in that: Comprising the brake pad according to claim 7 or 8.

10. An automobile, characterized in that: Including the brake according to claim 9.

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