Anti-lock brake disc

Abstract

The utility model relates to the technical field of vehicle braking, in particular to an anti-lock brake disc, which comprises a brake disc body with a first disc surface and a second disc surface, and is characterized in that an annular brake part on which a brake pad of a brake acts is arranged on the first disc surface and / or the second disc surface; a plurality of smooth transition units are arranged on the annular brake part, and friction surfaces are arranged between the adjacent smooth transition units; the smooth transition unit is a groove and / or a through groove formed in the annular brake part. Compared with the prior art, the anti-lock brake disc has the advantages that the anti-lock control of a vehicle can be realized without additionally arranging a convex part on the disc surface and changing the brake pad, and compared with the traditional convex part, the anti-lock brake disc is smaller in abrasion and longer in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle braking technical field especially relates to a kind of anti-lock brake disc. BACKGROUND

[0002] The popularity of vehicles brings a lot of life convenience to people, especially shortens the time required for unit travel. In order to facilitate parking, various vehicles in daily life have brake systems, and all cars contain anti-lock braking systems, abbreviated as ABS. The function is to automatically control the size of the brake force of the brake when the car is braking, so that the wheels are not locked and are in a state of rolling and sliding to ensure that the adhesion of the wheels to the ground is at a maximum.

[0003] However, in the field of electric vehicles, especially the brake device suitable for two-wheeled electric vehicles, whether it is a hydraulic disc brake or a drum brake, it can only achieve wheel locking during braking. Wheel locking can easily cause the friction between the tire and the ground to decrease, and the tire to lose traction, thereby causing uncontrollable dangerous situations such as vehicle skidding and tail swinging. That is, most current electric vehicles do not have an anti-lock system, which can cause sudden braking during electric vehicle riding, leading to wheel locking, tire skidding, and other serious accidents, especially in rainy, wet, and low adhesion road conditions, which increases the probability of such situations occurring, thereby causing the electric vehicle to lose control and resulting in dangerous accidents.

[0004] To this end, a Chinese invention patent with publication number CN114382807A discloses an anti-lock brake disc, which includes a brake disc and a brake. The brake is provided with a tab inside for contacting the brake disc and stopping its rotation through friction. Along the circumferential direction of the brake disc, there are evenly distributed protruding friction blocks. Between two adjacent protruding friction blocks along the circumferential direction of the brake disc, there is a smooth transition surface. The protruding friction block includes a protruding friction surface parallel to the brake disc and a protruding transition surface arranged around the protruding friction surface. The tab includes a curved tab matching the protruding friction block, which includes a curved friction surface and a curved transition surface arranged around the curved friction surface. The curved friction surface is parallel to the protruding friction surface. This structure design divides the protruding friction block and the smooth transition surface on the brake disc, realizes periodic changes in braking force, thereby preventing the brake pad from locking the brake disc, and the structure is compact and does not require additional auxiliary systems.

[0005] However, if used for a long time, the protruding friction block and the curved tab on the tab, which increase friction by rubbing against each other, will inevitably be worn out, causing the height of the protruding friction block and / or the curved tab to decrease, or even be worn flat, which will significantly reduce or even eliminate the locking effect, thereby losing the anti-lock function.

[0006] In addition, in order to realize the scheme, that is, to set the protruding friction blocks on the surface of the brake disc, and to set the curved flanges matching the protruding friction blocks on the flanges, the machining cost is inevitably increased.

[0007] Therefore, there is an urgent need for a new technical solution to solve the above technical problems. Invention content

[0008] The utility model discloses a kind of anti-lock brake discs, to solve the technical problems that motor module and rotating drive device of auxiliary wheel device are all set on the outer side of auxiliary roller support arm, due to lack of external protection, it is very easy to collide with external object in vehicle driving, and then cause damage, reduce service life;And since motor module is set on the top of the mounting plate perpendicular to fork bracket, it needs electric vehicle to have enough installation space when installing, and the installation of auxiliary wheel device is affected.

[0009] The above object is achieved by the following technical solutions:

[0010] An anti-lock brake disc, comprising a brake disc body having a first disc surface and a second disc surface, characterized in that an annular brake portion for brake pads of a brake is provided on the first disc surface and / or the second disc surface, and a plurality of smooth transition units are provided on the annular brake portion, and the adjacent smooth transition units serve as friction surfaces; the smooth transition unit is a groove and / or a through groove opened in the annular brake portion.

[0011] Further, the shape of the smooth transition unit is smaller than the shape of the brake pad.

[0012] Further, the smooth transition unit comprises at least one groove and / or through groove.

[0013] Further, a friction-reducing module is provided in the groove and / or through groove, and the outer surface of the friction-reducing module is flush with the top of the groove and / or through groove.

[0014] Further, the friction-reducing module is graphite.

[0015] Further, the groove and / or through groove is rectangular and is arranged at equal intervals on the annular brake portion.

[0016] Further, the groove and / or through groove is circular and is arranged at equal intervals on the annular brake portion.

[0017] Further, the brake disc body is of semi-metallic material.

[0018] Further, the brake disc body is of ceramic material.

[0019] Further, the brake pad is a disc brake pad or a caliper pad.

[0020] The anti-lock brake disc provided by the utility model adopts the method of setting the annular brake part overlapping the first disc face and / or the second disc face on the disc body of the brake disc, and setting a plurality of smooth transition units on the annular brake part, so that the surface with small friction and the surface with large friction are created on the annular brake part when the brake disc acts on the brake pad, the rotation of the brake disc relative to the brake pad is realized, the friction is reduced, and the cycle is realized, so that the anti-lock deceleration of the vehicle is realized, and the vehicle is completely stopped. The anti-lock brake disc of the utility model does not need to add the protruding part on the disc face, does not need to change the brake pad, can realize the anti-lock control of the vehicle, has smaller wear relative to the traditional protruding part, and has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure diagram of the smooth transition unit in the anti-lock brake disc is shown in the utility model;

[0022] Figure 2 The structure diagram of the smooth transition unit in the anti-lock brake disc is shown in the utility model;

[0023] Figure 3 The application diagram of the first disc face and the second disc face in the anti-lock brake disc is shown in the utility model;

[0024] Figure 4 The application diagram of the smooth transition unit in the anti-lock brake disc is shown in the utility model;

[0025] Figure 5 The application diagram of the smooth transition unit in the anti-lock brake disc is shown in the utility model;

[0026] Figure 6 The structure diagram of the smooth transition unit in the anti-lock brake disc is shown in the utility model;

[0027] Figure 7 The structure diagram of the smooth transition unit in the anti-lock brake disc is shown in the utility model;

[0028] Figure 8 The diagram of the anti-lock brake disc is shown in the utility model.

[0029] FIGURE MARK:

[0030] 1-Brake disc body, 101-First disc surface, 102-Second disc surface;

[0031] 2- Annular brake part;

[0032] 3-Smooth transition unit, 301-Groove, 302-Through groove;

[0033] 4-Brake, 401-Brake pads;

[0034] 5- Friction Reduction Module. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] like Figures 1-3 As shown, this solution provides an anti-lock brake disc, including a brake disc body 1 having a first disc surface 101 and a second disc surface 102. The characteristic is that an annular brake portion 2 for the brake pad 401 of the brake 4 is provided on the first disc surface 101 and / or the second disc surface 102, and a plurality of smooth transition units 3 are provided on the annular brake portion 2, with adjacent smooth transition units 3 serving as friction surfaces.

[0037] The smooth transition unit 3 is a groove 301 and / or a through groove 302 formed in the annular brake part 2.

[0038] Specifically, this solution provides an anti-lock brake disc that can be used with brake pads 401 of conventional brakes on the market, achieving the purpose of anti-lock braking of the vehicle without modifying the original brake pads 401.

[0039] This anti-lock brake disc has the following specifications:

[0040] Specification 1: An annular brake portion 2 is provided on the first disc surface 101 of the brake disc body 1. Then, a plurality of smooth transition units 3 are provided on the brake portion 2. The smooth transition unit 3 can be a groove 301 formed in the annular brake portion 2, or a through groove 302 formed in the annular brake portion 2, or both. The distance between each smooth transition unit 3 is set according to vehicle control requirements. In this embodiment, it is preferred to set them at equal intervals, which can provide relatively smooth control for the vehicle. Under this specification, anti-lock braking control can be achieved for the brake pad 4 located on one side of the first disc surface 101.

[0041] The specification 2, the first disc surface 101 and the second disc surface 102 of the brake disc body 1 are symmetrically provided with the annular brake part 2, and then a plurality of smooth transition units 3 are symmetrically provided on the two annular brake parts 2. The smooth transition unit 3 can be a groove 301 provided in the annular brake part 2, or a through groove 302 provided in the annular brake part 2, or both the through groove 301 and the groove 302. The distance of each smooth transition unit 3 is set according to the vehicle control requirement. In this embodiment, the equal interval setting is preferred, which can provide relatively stable control for the vehicle. Under this specification, the two brake pads 401 of the brake 4 can act on the first disc surface 101 and the second disc surface 102 at the same time, and the anti-lock effect is more accurate compared with the specification 1.

[0042] The above is only part of the embodiment of the present scheme, and other transformations according to the structure and connection relationship also belong to the protection scope of the present scheme.

[0043] As shown in Figure 4 and Figure 5 , the present scheme uses the annular brake part 2 overlapping with the first disc surface 101 and / or the second disc surface 102 as the main friction surface of the brake pad 401. When braking, the brake pad 401 will completely adhere to it, and the friction will reach the maximum at this time. The smooth transition unit 3 with a lower horizontal height than the friction surface is used as a friction reduction (the brake pad 401 only adheres to the outer part of the annular brake part 2 of the smooth transition unit 3), and the brake pad 401 cannot adhere to it, and then the area has no friction relative to the brake pad 401. At this time, the rotational speed of the brake disc under the action of inertia is greater than the rotational speed when the brake pad 401 acts on the friction surface. Through the alternating friction-friction reduction-friction, the cycle is realized to prevent the vehicle from locking and decelerating until the vehicle completely stops.

[0044] It should be noted that the outer shape of the smooth transition unit 3 in this embodiment is smaller than the outer shape of the brake pad 401, so that the brake pad 401 cannot be completely trapped in the groove 301 or the through groove 302 under the action of external pressure, avoiding the problem of collision between the brake pad 401 and the inner wall of the groove 301 or the through groove 302 during the rotation of the brake disc 1, and then causing the problem of locking.

[0045] The smooth transition unit 3 in this embodiment includes at least one groove 301 and / or through groove 302.

[0046] As the first specific embodiment of the present scheme, the groove 301 and / or the through groove 302 is rectangular and is arranged at equal intervals in the annular brake part.

[0047] As a second embodiment of the present application, the grooves 301 and / or the through grooves 302 are circular and are arranged equidistantly on the annular brake portion.

[0048] As shown in Figure 6 and Figure 7 As a third embodiment of the present application, the smooth transition unit 3 includes three waist-shaped grooves or through grooves arranged equidistantly.

[0049] As shown in Figure 8 The grooves 301 and / or the through grooves 302 are provided with a friction-reducing module 5, and the outer surface of the friction-reducing module 5 is flush with the top of the grooves 301 and / or the through grooves 302, so that the outer surface of the friction-reducing module 5 is horizontal to the first disc surface 101 and / or the second disc surface 102 of the brake disc body.

[0050] In this structure, when the brake pad of the brake passes through the friction-reducing module 5, the surface of the friction-reducing module 5 not only provides smooth sliding support for the brake pad, but also has a small friction coefficient relative to the brake disc body 1, so that the sliding speed of the brake pad on the friction-reducing module 5 is greater than the speed of the friction surface.

[0051] Specifically, the friction-reducing module 5 is made of materials with small friction coefficients such as graphite, molybdenum dioxide, copper powder and lead.

[0052] Graphite is a typical friction-reducing material with a Mohs hardness of less than 2, which can reduce the friction coefficient by forming a lubricating film and improve wear resistance. In the present brake disc, graphite can be used to balance the friction coefficient and thermal stability, reduce noise and dust during braking.

[0053] Molybdenum disulfide has a layered structure, which can effectively reduce the direct contact of the friction surface and reduce the friction coefficient. It is suitable for high temperature working conditions and can improve the heat decay resistance of the brake pad.

[0054] Copper powder can form a transfer film in the friction material, reducing damage to the brake disc and stabilizing the friction coefficient.

[0055] Lead as a soft metal filler can reduce the friction coefficient through plastic deformation.

[0056] When the smooth transition unit 3 is the groove 301, the above-mentioned materials with small friction coefficients are filled in the groove 301, and the surface thereof is ensured to be flush with the first disc surface 101 and / or the second disc surface 102 of the brake pad 401.

[0057] When the smooth transition unit 3 is the groove 301, the material with small friction coefficient is filled in the through groove 302, and the surfaces on both sides are flush with the first disc surface 101 and the second disc surface 102 of the brake pad 401.

[0058] It should be noted that, for the filling or connecting mode of the friction reduction module 5 and the groove or the through groove in the embodiment, common high-temperature and high-pressure sintering, mixed glue bonding and other modes can be used to ensure that it will not fall off.

[0059] As an optimization of the scheme, the brake disc body 1 is a semi-metal material. Specifically, the semi-metal brake pad has a metal content of 30%-65% of iron, copper, steel and other metals as the main component, and the friction performance is enhanced by metal fibers. It has the advantages of low cost, mainstream vehicle factory standard, high temperature resistance up to 500℃ or more, strong braking force.

[0060] A few metal / low metal brake pads can also be used, that is, the metal content is lower than that of semi-metal (10%-30%), and non-metallic materials such as graphite and glass fiber are added, which has the advantages of weight reduction of 15%-20% and noise reduction of about (50 decibels), and is suitable for urban commuter vehicles.

[0061] As a further optimization of the scheme, the brake disc body 1 is a ceramic material, which mainly contains ceramic fibers such as aramid fibers and synthetic graphite, and some high-end products contain silicon carbide reinforcing materials; It has the advantages of high temperature resistance (800℃ or more still maintaining stable friction coefficient), no metal dust and very low noise.

[0062] The brake pad 401 in the embodiment is a disc brake pad or a lining pad, so as to better act on the anti-lock brake disc.

[0063] The above only describes the implementation manner of the utility model, and is not used to limit the utility model. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An antilock brake disc comprising a brake disc body (1) having a first disc face (101) and a second disc face (102), characterized in that The first disc surface (101) and / or the second disc surface (102) is provided with an annular brake part (2) for the brake pad (401) of the brake (4) to act on, and a plurality of smooth transition units (3) are arranged on the annular brake part (2), and the adjacent smooth transition units (3) serve as friction surfaces; The smooth transition unit (3) is a groove (301) and / or a through groove (302) opened in the annular brake part (2).

2. A non-locking brake disc according to claim 1, wherein The outer shape of the smooth transition unit (3) is smaller than the outer shape of the brake pad (401).

3. A non-locking brake disc according to claim 1 or 2, characterised in that, The smooth transition unit (3) includes at least one groove (301) and / or a through groove (302).

4. A non-locking brake disc according to claim 3, wherein The groove (301) and / or the through groove (302) is provided with a friction reduction module (5), and the outer surface of the friction reduction module (5) is flush with the top of the groove (301) and / or the through groove (302).

5. A non-locking brake disc according to claim 4, wherein The friction reduction module (5) is graphite.

6. A non-locking brake disc as defined in claim 3, wherein The groove (301) and / or the through groove (302) is rectangular and is arranged at equal intervals on the annular brake part.

7. A non-locking brake disc as defined in claim 3 wherein, The groove (301) and / or the through groove (302) is circular and is arranged at equal intervals on the annular brake part.

8. A non-locking brake disc as defined in claim 1, wherein The brake disc body (1) is a semi-metallic material.

9. A non-locking brake disc as defined in claim 1, wherein The brake disc body (1) is a ceramic material.

10. The anti-lock brake disc of claim 1 wherein, The brake pad (401) is a disc brake pad or a lining pad.

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