CN217152786U

CN217152786U - Brake disc and new energy automobile with same

Info

Publication number: CN217152786U
Application number: CN202220837968.XU
Authority: CN
Inventors: 王俊龙; 陆兆纳; 缪伟志
Original assignee: NANTONG INSTITUTE OF TECHNOLOGY
Current assignee: NANTONG INSTITUTE OF TECHNOLOGY
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-08-09
Anticipated expiration: 2032-04-12

Abstract

The application discloses brake disc and have its new energy automobile, including the disc, the disc has the braking face, the disc is provided with a plurality of ventilation hole groups, a plurality of ventilation hole groups set up along the circumference interval of disc, and every ventilation hole group all has a plurality of first ventilation holes along the radial interval arrangement of disc, a plurality of first ventilation holes are the step hole, the step hole is including continuous first hole section and second hole section, the second hole section is located one side that braking face was kept away from to first hole section and the diameter of first hole section is greater than the diameter of second hole section, wherein, in the radial outside direction along the disc, the diameter of the first hole section in a plurality of first ventilation holes increases gradually. The application provides a brake disc and have its new energy automobile, has not only increased the heat radiating area of disc, and has still improved the heat dissipation equilibrium performance of disc, has promoted the radiating effect of disc, and then has improved new energy automobile's brake performance.

Description

Brake disc and new energy automobile with same

Technical Field

The utility model relates to an automobile technical field, concretely relates to brake disc and have its new energy automobile.

Background

Because the new energy automobile is provided with a heavier battery, the weight of the new energy automobile is increased, and the new energy automobile is required to be provided with a brake with better braking performance. Most new energy vehicles are provided with a ventilation disc brake, and the ventilation disc brake comprises two brake discs. At present, most brake discs are provided with ventilation straight holes, but the brake discs have the disadvantages of general heat dissipation performance and poor heat dissipation balance.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies in the prior art, it is desirable to provide a brake disc and a new energy automobile having the same.

The application provides a brake disc, including the disc, the disc has the braking face, the disc is provided with a plurality of ventilation hole groups, a plurality of ventilation hole groups set up along the circumference interval of disc, and every ventilation hole group all has a plurality of first ventilation holes of radial interval arrangement along the disc, a plurality of first ventilation holes are the step hole, the step hole includes continuous first hole section and second hole section, the second hole section is located one side that braking face was kept away from to first hole section and the diameter of first hole section is greater than the diameter of second hole section, wherein, in the radial outside direction along the disc, the diameter of the first hole section in a plurality of first ventilation holes increases gradually.

Further, the depth of the first hole section of the plurality of first ventilation holes gradually increases in a radially outward direction of the disk.

Further, the maximum depth of the first hole section is greater than or equal to half the thickness of the disc.

Further, one end of the first hole section is intersected with the braking surface, and a chamfer is arranged at the intersection of the first hole section and the braking surface.

Furthermore, a plurality of vent hole groups are symmetrically distributed on the disk.

Furthermore, the number of the two disks is two, and the two disks are arranged oppositely, wherein the two disks are both provided with a plurality of vent hole groups, and the vent hole groups on the two disks are arranged in a staggered manner along the circumferential direction of the disks.

Further, an antirust metal layer is arranged on the inner wall surface of the stepped hole.

Further, the rustproof metal layer comprises a first rustproof part, the first rustproof part covers the step surface of the step hole, and a heat dissipation protruding part is arranged on one side, away from the step surface, of the first rustproof part.

Furthermore, the heat dissipation convex part is of an annular structure.

In a second aspect, the application further provides a new energy automobile, which comprises a brake disc.

The application provides a brake disc and have its new energy automobile, be provided with a plurality of ventilation hole groups through the disc, a plurality of first ventilation holes in every ventilation hole group are the step hole, the step hole is including continuous first hole section and second hole section, the diameter that the second hole section is located the inboard of first hole section and first hole section is greater than the diameter of second hole section, the diameter of the first hole section in a plurality of first ventilation holes increases gradually in the radial outside direction along the disc, the heat radiating area of disc has not only been increased, and the heat dissipation balance performance of disc has still been improved, the radiating effect of disc has been promoted, and then new energy automobile's brake performance has been improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic front view of a brake disc provided in an embodiment of the present application;

FIG. 2 is a schematic rear view of a brake disc provided in an embodiment of the present application;

fig. 3 is a schematic half-sectional view of a first vent hole according to another embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

Referring to fig. 1-2, embodiments of the present application provide a brake disc for a vented disc brake. The brake disc includes a disc body portion and a hub portion 200, and the hub portion 200 is mounted to a middle portion of the disc body portion. The disc body comprises two discs 100, the two discs 100 are oppositely arranged, and the two discs 100 are connected through a plurality of connecting columns. The disc 100 has a disk shape, and the disc 100 has a braking surface which is a surface contacting with a brake pad, that is, an outer end surface of the disc 100. The disk 100 is provided with a plurality of vent hole groups 110, and the plurality of vent hole groups 110 are arranged at intervals in the circumferential direction of the disk 100. The ventilation hole sets 110 are uniformly spaced along the circumferential direction of the disc 100, which is helpful to improve the heat dissipation balance of the brake disc. Each of the ventilation hole groups 110 has a plurality of first ventilation holes 111 provided through the disk 100, and the plurality of first ventilation holes 111 are provided at intervals in a radial direction of the disk 100 to facilitate processing of the first ventilation holes 111.

The plurality of first vent holes 111 are stepped holes, specifically: the stepped bore includes a first bore section 1111 and a second bore section 1112 connected together, both the first bore section 1111 and the second bore section 1112 are straight and coaxially disposed, the first bore section 1111 intersects the braking surface, the second bore section 1112 is located at a side of the first bore section 1111 away from the braking surface, and a diameter of the first bore section 1111 is greater than a diameter of the second bore section 1112. Wherein the diameter of the first hole section 1111 of the plurality of first ventilation holes 111 gradually increases in a radially outward direction of the disc 100. By providing the ventilation hole group 110, not only the heat dissipation area of the disk 100 can be increased by the stepped holes, but also the increase of the heat dissipation area of the disk 100 is gradually increased in the radial outward direction of the disk 100 by the diameter of the first hole section 1111 of the plurality of first ventilation holes 111 being gradually increased, that is, the increase of the heat dissipation area of the disk 100 is gradually increased in the radial outward direction of the disk 100, so that the heat dissipation performance of the disk 100 from the inner end to the outer end is gradually increased, the heat distribution of the disk 100 is matched with the heat dissipation performance, and the heat dissipation balance of the disk 100 is improved. For example: when the disc 100 is braked, the heat at the outer end of the disc 100 is more than the heat at the inner end, and the heat dissipation performance at the outer end of the disc 100 is higher than that at the inner end, so that the disc 100 can dissipate heat uniformly. At the same time, the weight of the disk 100 can be reduced, contributing to the reduction in weight of the disk 100.

The diameter of the second hole segment 1112 in each ventilation hole group 110 can be the same, so that the difficulty of punching the disc 100 is reduced; alternatively, the diameter of the second bore segments 1112 in each vent hole set 110 may be different, such as increasing the diameter of the second bore segments 1112 in a direction radially outward of the disk 100.

In each ventilation hole group 110, the diameter difference between the first hole section 1111 with the largest diameter and the first hole section 1111 with the smallest diameter is within 30% of the smallest diameter, so that the overall structural strength of the disc 100 is considered as much as possible while increasing the heat dissipation performance and the heat dissipation balance.

In some embodiments of the present application, the depth of the first hole section 1111 of the plurality of first ventilation holes 111 gradually increases in a radially outward direction of the disk 100, and thus the heat dissipation area and the heat dissipation balance of the disk 100 can be further increased.

The maximum depth of the first hole section 1111 is greater than or equal to half of the thickness of the disc 100, that is, the depth of the first hole section 1111 is less than or equal to the depth of the second hole section 1112, so that the heat dissipation performance and the heat dissipation balance can be increased, and the overall structural strength of the disc 100 can be considered as much as possible.

In some embodiments of the present application, one end of the first bore section 1111 intersects the braking surface and the intersection of the first bore section 1111 and the braking surface is provided with a chamfer. By providing the chamfer, friction between the outer edge of the first vent hole 111 and the brake pad can be reduced.

In some embodiments of the present application, the plurality of ventilation hole sets 110 are symmetrically distributed on the disk 100, so as to not only further improve the heat dissipation balance of the disk 100, but also help to improve the dynamic balance performance of the disk 100 structure.

In some embodiments of the present application, the two disks 100 are each provided with a plurality of ventilation hole sets 110, and the ventilation hole sets 110 on the two disks 100 are staggered in the circumferential direction of the disks 100, so that the distribution of the first ventilation holes 111 in the circumferential direction of the disk can be made denser while the overall structural strength of the disks 100 is not reduced, which is beneficial to further improving the heat dissipation performance.

In some embodiments of the present application, each of the ventilation hole sets 110 further includes a second ventilation hole 112 penetrating through the disk 100, the second ventilation hole 112 is located at one side of the plurality of first ventilation holes 111 and is disposed corresponding to one ventilation hole set 110 in another disk 100, and the second ventilation hole 112 is disposed coaxially with one first ventilation hole 111 in the ventilation hole set 110 disposed correspondingly, so that a convection reinforcement hole can be formed by using the second ventilation hole 112 and the first ventilation hole 111 coaxial therewith, thereby further increasing a heat dissipation effect.

The number of the second ventilation holes 112 should be as small as possible and disposed in the middle of the disk 100, and the number may be, for example, one or two.

The second vent hole 112 may also be a step hole shape, and has a structure consistent with that of the first vent hole 111.

In some embodiments of the present application, the two ends of the connection column are provided with circumferential extensions, and the circumferential extensions are annular structures and are integrated with the connection column. The circumferential extending part is fixedly connected with the discs 100, so that the connecting area between the connecting column and the discs 100 is increased, the connecting strength between the two discs 100 is improved, and the heat dissipation area is further improved.

Referring to fig. 3, in some embodiments of the present application, the inner wall surface of the stepped hole is provided with a rust-proof metal layer 120, so that the risk of rusting of the inner wall of the first ventilation hole 111 can be reduced, and the service life of the brake disc can be prolonged. The antirust metal layer 120 may be made of iron oxide, which has good binding property with the disc 100 made of cast iron alloy, and is firmly connected.

In some embodiments of the present application, the rust inhibitive metal layer 120 includes a first rust inhibitive portion 121, the first rust inhibitive portion 121 is disposed corresponding to the step surface 1113 of the step hole, and the first rust inhibitive portion 121 covers the step surface 1113 of the step hole. The step surface 1113 of the step hole refers to an annular surface of the inner wall surface of the step hole, which is located between the first hole section 1111 and the second hole section 1112 and perpendicular to the axes of the first hole section 1111 and the second hole section 1112. One side that first rust-resistant portion 121 deviates from step face 1113 is provided with heat dissipation convex part 122, so set up, can be to the realization carry on rust-resistant while to first ventilation hole 111, can also increase the heat radiating area of first ventilation hole 111 department.

The heat dissipating protrusion 122 is of an annular structure, so that the heat dissipating area of the first vent hole 111 can be further increased.

Of course, in other embodiments, the step surface 1113 may be provided with unevenness to increase the heat dissipation area.

The application also provides a new energy automobile, including foretell brake disc.

It will be understood that any reference to the above orientation or positional relationship as indicated by the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is intended to be based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered as limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means three or more unless otherwise specified.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A brake disc, characterized in that, includes the disc, the disc has the braking face, the disc is provided with a plurality of ventilation hole groups, a plurality of ventilation hole groups are followed the circumference interval setting of disc, and every the ventilation hole group all has along a plurality of first ventilation holes of the radial interval arrangement of disc, a plurality of first ventilation holes are the step hole, the step hole is including continuous first hole section and second hole section, the second hole section is located first hole section is kept away from the one side of braking face just the diameter of first hole section is greater than the diameter of second hole section, wherein, along the radial outside direction of disc, in a plurality of first ventilation holes the diameter of first hole section increases gradually.

2. The brake disc of claim 1, wherein the first segment of the plurality of first vent holes increases in depth in a radially outward direction of the disc.

3. Brake disc according to claim 2, characterized in that the maximum depth of the first hole section is greater than or equal to half the disc thickness.

4. The brake disc of claim 1, wherein one end of the first bore segment intersects the braking surface and the intersection of the first bore segment and the braking surface is provided with a chamfer.

5. The brake disc of claim 1, wherein the plurality of sets of ventilation holes are symmetrically distributed in the disc.

6. The disc according to claim 1, wherein the number of the discs is two, and the two discs are disposed opposite to each other, wherein the two discs are each provided with the plurality of ventilation hole sets, and the plurality of ventilation hole sets on the two discs are staggered in a circumferential direction of the discs.

7. The brake disc according to any one of claims 1 to 6, wherein an inner wall surface of the stepped hole is provided with a rust-proof metal layer.

8. The brake disc of claim 7, wherein the rust-resistant metal layer comprises a first rust-resistant portion covering the step surface of the step hole, and a heat-dissipating protrusion is disposed on a side of the first rust-resistant portion facing away from the step surface.

9. The brake disc of claim 8, wherein the heat dissipating protrusions are annular structures.

10. A new energy automobile, characterized by comprising a brake disc according to any one of claims 1 to 9.