CN213298653U

CN213298653U - Brake disc and vehicle

Info

Publication number: CN213298653U
Application number: CN202022101356.8U
Authority: CN
Inventors: 汪德林
Original assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Current assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-05-28
Anticipated expiration: 2030-09-22

Abstract

The application discloses brake disc and vehicle belongs to automobile parts manufacturing and designing field. The brake disc includes: the wheel mounting plate is used for being fixedly connected with a wheel; a first brake pad connected to the wheel mounting plate by a transition connection portion; the transition connecting part is provided with a plurality of heat dissipation bulges or heat dissipation grooves; the second brake block is provided with a plurality of ribs at intervals with the first brake block, heat dissipation channels are formed between adjacent ribs, and the heat dissipation channels are used for guiding airflow in the inner areas of the first brake block and the second brake block to the outer side of the brake disc when the brake disc rotates. The application of the brake disc sets up a plurality of heat dissipation archs or heat dissipation recess on transition connecting portion, under the condition that brake disc structure size does not obviously change, has increased the heat radiating area of transition connecting portion, furthest has promoted the ventilation heat-sinking capability of brake disc.

Description

Brake disc and vehicle

Technical Field

The utility model relates to a automobile parts's manufacturing and designing field, in particular to brake disc and vehicle.

Background

The automobile brake is related to the driving safety, and with the continuous improvement of the safety consciousness of people, an automobile brake disc is used as a core part of a brake system and plays the roles of transmitting brake torque, converting automobile kinetic energy into heat energy and temporarily storing the heat energy, and the heat capacity and the heat dissipation capacity of the brake disc directly influence the braking efficiency and the braking stability of the whole automobile, so that the design key of the brake system is. When an automobile is emergently braked at a high speed or continuously descends a long slope, a large amount of heat energy can be generated in a short time, so that the temperature of an automobile brake disc is rapidly increased, if the ventilation and heat dissipation capacity of the brake disc is poor, thermal deformation, thermal cracks and the like can be generated, and meanwhile, the friction coefficient of a brake pad can be thermally declined due to overhigh temperature, so that the braking performance is attenuated, the braking distance is prolonged, and the driving safety is influenced.

In the prior art, one way is to increase the thermal capacity by increasing the structural size of the brake disc and to increase the heat dissipation capacity by providing ventilation slots. However, the increase in the structural size of the brake disc further increases the weight of the brake disc, which is disadvantageous for lightweight design. The other mode is through punching promotion radiating efficiency at the brake disc working face, though can promote some heat-sinking capability in this kind of mode, nevertheless is subject to the reason of cost, hardly obtains promoting on a large scale. In addition, the inboard space of brake disc transition connecting portion is narrow and small, and the heat is hardly in time distributed away, has great influence to the life of wheel hub bearing.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved is the radiating effect of brake disc among the prior art scheme and remains the problem that improves.

In view of the above technical problems, the present application provides the following technical solutions:

a brake disc, comprising: the wheel mounting plate is used for being fixedly connected with a wheel; a first brake pad connected to the wheel mounting plate by a transition connection portion; the transition connecting part is provided with a plurality of heat dissipation bulges or heat dissipation grooves; the second brake block and the first brake block are arranged at intervals, a plurality of ribs are formed between the second brake block and the first brake block, heat dissipation channels are formed between the adjacent ribs, and the heat dissipation channels are used for guiding airflow in the inner area of the first brake block and the second brake block to the outer side of the brake disc when the brake disc rotates.

In some embodiments of the present application, the transition connection portion includes a cylindrical or conical cylinder, and is a plurality of the heat dissipation protrusions or the heat dissipation grooves are arranged at intervals in the circumferential direction of the cylinder.

In some embodiments of the present application, the heat dissipating protrusion or the heat dissipating groove is formed on the inner wall and the outer wall of the cylinder, and the heat dissipating protrusion or the heat dissipating groove is integrally formed with the cylinder.

In some embodiments of the present application, the heat dissipating protrusion or the heat dissipating groove is formed on the inner wall and the outer wall of the cylinder, respectively.

In some embodiments of this application, the outer wall of barrel sets up a plurality ofly at the interval the heat dissipation is protruding, the inner wall of barrel sets up a plurality ofly at the interval the heat dissipation recess, the heat dissipation protruding with the radial position of heat dissipation recess sets up relatively.

In some embodiments of the present application, the heat dissipation protrusion is formed in an arc shape with the heat dissipation groove, and the heat dissipation protrusion and the heat dissipation groove are formed in an arc shape along the axial direction of the cylinder.

In some embodiments of the present application, the wheel mounting disc is ring-shaped, be equipped with on the wheel mounting disc a plurality of be used for with the mounting hole of wheel connection.

In some embodiments of the present application, the transition connection portion further includes a transition inclined section that is connected between the cylinder and the first brake pad, and a portion of the transition inclined section that is connected to the cylinder is inclined toward the second brake pad.

In some embodiments of the present invention, the first brake pad is formed in a ring shape and is disposed parallel to the wheel mounting plate, and the first brake pad, the intermediate connection portion, and the wheel mounting plate are integrally formed.

In some embodiments of the present invention, the second brake pad is formed in a ring shape, the rib pieces are formed in a long shape, the plurality of rib pieces are uniformly wound around a disc surface of the second brake pad, and the rib pieces extend along an outer circumferential surface of the second brake pad toward an inner circumferential surface of the second brake pad.

The application simultaneously provides a vehicle, and it includes above-mentioned brake disc.

Compared with the prior art, the technical scheme of the application has the following technical effects:

in the brake disc and the vehicle according to the present embodiment, a plurality of ribs are provided at intervals between the second brake pad and the first brake pad of the brake disc, a heat dissipation channel is formed between adjacent ribs, and during high-speed rotation of the brake disc, an air flow flows from the inside of the transition connection portion through the heat dissipation channel and is thrown outward, thereby achieving heat dissipation of the brake disc. Because the transition connecting part is provided with a plurality of radiating bulges or radiating grooves, the radiating area of the transition connecting part is increased under the condition that the structural size of the brake disc is not obviously changed, and the ventilation and radiating capacity of the brake disc is improved to the maximum extent; simultaneously, the effect that heat dissipation arch or heat dissipation groove structure had the strengthening rib has concurrently, has improved the intensity of brake disc, and the wall thickness of transition connecting portion can further reduce, realizes the lightweight design of brake disc.

Drawings

The objects and advantages of this application will be appreciated by the following detailed description of the preferred embodiments thereof, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic structural view of an embodiment of a brake disc according to the present application;

FIG. 2 is another schematic structural view of an embodiment of a brake disk of the present application;

FIG. 3 is a longitudinal cross-sectional view of an embodiment of a brake disk of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a transverse cross-sectional view of an embodiment of a brake disk of the present application;

FIG. 6 is another transverse cross-sectional view of an embodiment of a brake disk of the present application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

The following is a specific embodiment of a brake disc provided by the present application, and is shown in fig. 1 to 6, the brake disc includes a wheel mounting disc 100 fixedly connected to a wheel, and a first brake pad 300 and a second brake pad 200 for cooperating with the brake pads to realize braking of an automobile.

Wherein the first brake pad 300 is connected to the wheel mounting plate 100 by a transition connection part 400; a plurality of heat dissipation protrusions 401 or heat dissipation grooves 402 are arranged on the transition connecting part 400; a plurality of ribs 500 are arranged between the second brake pad 200 and the first brake pad 300 at intervals, a heat dissipation channel a is formed between adjacent ribs 500, and during high-speed rotation of the brake disc, airflow flows through the heat dissipation channel a from the inner side of the transition connection part 400 (i.e., the inner area of the first brake pad 300 and the second brake pad 200) and is thrown out to the outside, so that heat dissipation of the brake disc is realized. In the present application, the plurality is two or more.

In the brake disc in the embodiment, because the plurality of heat dissipation protrusions 401 or heat dissipation grooves 402 are arranged on the transition connection portion 400, the heat dissipation area of the transition connection portion 400 is increased under the condition that the structural size of the brake disc is not obviously changed, and the ventilation and heat dissipation capacity of the brake disc is improved to the maximum extent; meanwhile, the heat dissipation protrusion 401 or the heat dissipation groove 402 has the function of a reinforcing rib, the strength of the brake disc is improved, the wall thickness of the transition connecting part 400 can be further reduced, and the lightweight design of the brake disc is realized.

Specifically, the transition connection portion 400 includes a cylindrical or conical cylinder 403 and a transition slope section 404, the transition slope section 404 is connected between the cylinder 403 and the first brake pad 300, and a portion of the transition slope section 404 connected to the cylinder 403 is sloped toward the second brake pad 200. A plurality of the heat dissipation protrusions 401 or heat dissipation grooves 402 are arranged at intervals along the circumferential direction of the cylinder 403.

Specifically, heat dissipation protrusion 401 or heat dissipation recess 402 with barrel 403 integrated casting shaping, because the casting degree of difficulty is lower, low cost compares other heat radiation structure, and the above-mentioned heat radiation structure of this application more does benefit to and promotes on a large scale.

Specifically, in order to increase the heat dissipation area and reduce the wall thickness of the transition connection part 400 to achieve a light weight design, the heat dissipation protrusion 401 or the heat dissipation groove 402 is respectively formed on the inner wall and the outer wall of the cylinder 403.

In one embodiment, the heat dissipation protrusions 401 or the heat dissipation grooves 402 may be formed on both the inner wall and the outer wall of the cylinder 403; in one embodiment, a plurality of heat dissipating protrusions 401 are provided at intervals on the inner wall of the cylinder 403, and a plurality of heat dissipating grooves 402 are provided at intervals on the outer wall. In another embodiment, as shown in fig. 1 and fig. 2, a plurality of heat dissipation protrusions 401 are disposed at intervals on an outer wall of the cylinder 403, a plurality of heat dissipation grooves 402 are disposed at intervals on an inner wall of the cylinder 403, and the heat dissipation protrusions 401 are disposed opposite to radial positions of the heat dissipation grooves 402. This embodiment increases the space available inside the transition connection 400, improves the air flow and increases the service life of the hub bearing.

Specifically, the heat dissipation protrusion 401 is formed as an arc protrusion, and the heat dissipation groove 402 is formed as an arc groove, so that a large heat dissipation area can be obtained, and the sand core of the brake disc can be conveniently manufactured.

In order to facilitate the demolding in the casting process, the heat dissipation protrusions 401 and the heat dissipation grooves 402 have a draft angle in the axial direction of the cylinder 403, and the draft angle is preferably 2 ° to 5 °.

Specifically, the wheel mounting plate 100 is circular, and a plurality of mounting holes 101 for connecting with the wheels are formed in the wheel mounting plate 100. The brake disc is fixedly connected with the wheel through a fastening bolt passing through the mounting hole 101.

The first brake pad 300 is formed in a ring shape and is parallel to the wheel mounting pad 100, the second brake pad 200 is formed in a ring shape having the same size as the first brake pad 300, the rib 500 is formed in a strip shape, the plurality of ribs 500 are uniformly distributed on the surface of the second brake pad 200, and the rib 500 extends along the outer circumference of the second brake pad 200 and the inner circumference of the second brake pad 200. In this way, the heat dissipation channel a can be formed between the adjacent ribs 500, and during the high-speed rotation process of the brake disc, the airflow flows through the inside of the transition connection part 400 and is thrown out of the heat dissipation channel a to the outside, so that the heat dissipation of the brake disc is realized.

More specifically, the wheel mounting disc 100, the first brake pad 300, the second brake pad 200, the transition connection portion 400, and the rib 500 of the brake disc are integrally cast.

The present application also provides a specific embodiment of a vehicle having the brake disc, and the structure of the brake disc in the vehicle refers to the specific embodiment, which is not described herein again.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the present application.

Claims

1. A brake disc, comprising:

the wheel mounting plate is used for being fixedly connected with a wheel;

a first brake pad connected to the wheel mounting plate by a transition connection portion; the transition connecting part is provided with a plurality of heat dissipation bulges or heat dissipation grooves;

the second brake block is provided with a plurality of ribs at intervals with the first brake block, heat dissipation channels are formed between adjacent ribs, and the heat dissipation channels are used for guiding airflow in the inner areas of the first brake block and the second brake block to the outer side of the brake disc when the brake disc rotates.

2. Brake disc according to claim 1,

the transition connecting part comprises a cylindrical or conical barrel, and a plurality of heat dissipation bulges or heat dissipation grooves are arranged at intervals along the circumferential direction of the barrel.

3. Brake disc according to claim 2,

the heat dissipation protrusions or the heat dissipation grooves are formed on the inner wall and the outer wall of the barrel body, and the heat dissipation protrusions or the heat dissipation grooves and the barrel body are integrally formed.

4. Brake disc according to claim 3,

the outer wall of the barrel is provided with a plurality of heat dissipation bulges at intervals, the inner wall of the barrel is provided with a plurality of heat dissipation grooves at intervals, and the heat dissipation bulges and the radial positions of the heat dissipation grooves are arranged oppositely.

5. Brake disc according to claim 2,

the heat dissipation protrusion and the heat dissipation groove are formed into an arc shape, and a die drawing angle is formed along the axial direction of the cylinder body.

6. Brake disc according to claim 1,

the wheel mounting disc is ring-shaped, and a plurality of mounting holes used for being connected with the wheels are formed in the wheel mounting disc.

7. Brake disc according to claim 2,

the transition connection part further comprises a transition inclined section, the transition inclined section is connected between the cylinder body and the first brake pad, and the part of the transition inclined section, which is connected with the cylinder body, inclines towards the second brake pad.

8. The brake disc of claim 1, wherein the first brake pad is shaped as a ring and is disposed parallel to the wheel mounting disc, and the first brake pad, the transition connection portion, and the wheel mounting disc are integrally formed.

9. The brake disc of claim 1, wherein the second brake pad is shaped as a circular ring, the rib is shaped as a long bar, a plurality of ribs are evenly distributed on the surface of the second brake pad, and the rib extends along the outer circumference of the second brake pad and the inner circumference of the second brake pad.

10. A vehicle, characterized in that it comprises a brake disc according to any one of claims 1 to 9.