CN217502379U

CN217502379U - Lightweight car brake disc

Info

Publication number: CN217502379U
Application number: CN202221633855.4U
Authority: CN
Inventors: 郑德金; 陈荣中; 黄俍
Original assignee: CSG TRW Chassis Systems Co Ltd
Current assignee: Chenzhi Chongqing Brake System Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-27
Anticipated expiration: 2032-06-27

Abstract

The utility model belongs to the technical field of automobile braking, and relates to a lightweight automobile brake disc, which comprises two symmetrically arranged coaxial brake disc bodies, wherein each brake disc body is of an annular structure, the brake disc body is divided into a plurality of annular areas along the radial direction, and a plurality of radiating ribs distributed in a circular array are arranged in each annular area; the cross section of the heat dissipation rib is strip-shaped and comprises two parallel straight line sections and two circular arc sections arranged at two ends of the straight line sections; the straight line section is connected with the circular arc section in a tangent mode; the radiating ribs are obliquely arranged on the brake disc body according to a set angle, and the oblique directions of the radiating ribs in adjacent annular areas are opposite; annular intervals are arranged between every two adjacent annular areas, and the widths of all the annular intervals are equal; the boundary line of the annular interval is tangent to the heat dissipation ribs distributed on the side of the boundary line. The utility model discloses the radiating surface area of brake disc can effectively be increased to the mode of arrangement of well heat dissipation muscle, enables the brake disc and cools off fast under high temperature.

Description

Lightweight car brake disc

Technical Field

The utility model belongs to the technical field of the car braking, a lightweight car brake disc is related to.

Background

A typical ventilated automotive brake disc has two concentric annular discs, i.e. friction faces of the brake disc, which are connected by reinforcing ribs. The reinforcing ribs and the two brake disc surfaces form a ventilation cooling mechanism. When the vehicle brakes, airflow enters from the ventilation opening at the inner diameter of the brake disc and exits from the ventilation opening at the outer diameter of the brake disc. Therefore, if the flows at the inlet and the outlet are basically consistent, the larger the heat dissipation surface area of the reinforcing ribs is, the better the heat dissipation effect is, and the flow direction and the flow speed of the wind direction in the ventilation mechanism also influence the heat dissipation effect, so that the arrangement of the strong heat dissipation ribs on the brake disc is the key for determining the weight of the ventilation brake disc, the heat carrying capacity and the heat dissipation performance.

When an automobile runs under an actual working condition, the temperature of a brake disc is often too high due to frequent braking, the brake disc is deformed to cause brake shaking, and for the design of the brake disc, the brake disc is uniformly heated and the thermal deformation of the brake disc is small, so that important attention is paid. The temperature of the brake disc can be quickly dissipated by the structure under the same weight, and the research on the structure under the high-temperature working condition under the same working condition is more excellent.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at realizing the brake disc design that the performance is more excellent under the high temperature operating mode of same mass, with continuous temperature rise, provide a lightweight car brake disc.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a light automobile brake disc comprises two symmetrically arranged coaxial brake disc bodies, wherein each brake disc body is of an annular structure, each brake disc body is radially divided into a plurality of annular areas, and a plurality of heat dissipation ribs distributed in a circular array are arranged in each annular area; the cross section of the heat dissipation rib is strip-shaped and comprises two parallel straight line sections and two circular arc sections arranged at two ends of the straight line sections; the straight line section is connected with the circular arc section in a tangent mode;

the radiating ribs are obliquely arranged on the brake disc body according to a set angle, and the oblique directions of the radiating ribs in adjacent annular areas are opposite; annular intervals are arranged between every two adjacent annular areas, and the widths of all the annular intervals are equal; the boundary line of the annular interval is tangent to the heat dissipation ribs distributed on the side of the boundary line.

Further, the heat dissipation ribs are divided into a first heat dissipation rib and a second heat dissipation rib; the annular areas are divided into a plurality of groups by taking every two adjacent annular areas as one group along the radial direction of the brake disc; only the first heat dissipation ribs are arranged on one of the two annular areas in each group, and only the second heat dissipation ribs are arranged on the other annular area;

the symmetric central line AB in the width direction of the first heat dissipation rib forms an included angle of 45 degrees with a radial symmetric line OA passing through the midpoint of a straight line section of the first heat dissipation rib and close to the outer side of the brake disc on the brake disc body; the symmetrical center line of the second heat dissipation rib in the length direction is superposed with the symmetrical center line of the first heat dissipation rib in the width direction.

Further, the radial symmetry line OA of each first heat dissipation rib intersects at least 3 heat dissipation ribs. At least 3 support points are formed in the radial direction of the brake disc, and deformation of the brake disc is reduced.

Further, the ratio of the height h to the width b of the heat dissipation ribs is 2: 1.

Further, the lightweight automobile brake disc further comprises a brake disc mounting cap; the edge of the inner diameter of one of the brake disc bodies is provided with a brake disc neck, and the brake disc neck and the brake disc mounting cap are fixedly connected into a whole through the brake disc neck; the neck of the brake disc is provided with a plurality of ventilation holes which are distributed circumferentially; one end of the ventilation hole is communicated with the gap between the radiating ribs, and the other end of the ventilation hole is communicated with the inner hole of the neck of the brake disc.

The beneficial effects of the utility model reside in that:

1. the utility model discloses the radiating surface area of brake disc can effectively be increased to the mode of arrangement of well heat dissipation muscle, enables the brake disc and cools off fast under high temperature, adds the ventilation hole at the brake disc neck and has still increased the heat dissipation air volume of brake disc when effectively having reduced brake disc weight saving cost, can reach the purpose that makes the brake disc cool off fast under high temperature.

2. The utility model discloses the high temperature state of brake disc can effectively be improved to the brake disc, reduces the brake shake that the brake disc arouses because of high temperature relatively the brake disc installation face simultaneously and consequently lead to, the abnormal sound of braking, the braking risk such as inefficacy, and then has promoted the nature controlled of car, take the travelling comfort.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a structural schematic view of a middle lightweight automobile brake disc of the present invention;

FIG. 2 is a sectional view taken along line H-H in FIG. 1;

fig. 3 is a schematic diagram of the distribution of the medium heat dissipation ribs of the present invention.

Reference numerals: 1-a brake disc body; 2-brake disc neck; 3-a brake disc mounting cap; 4-heat dissipation ribs; 5-a vent hole; 11-an annular region; 12-annular spacing; 41-first heat dissipation ribs; 42-second heat dissipation ribs.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 to 3, a lightweight automobile brake disc includes two symmetrically disposed coaxial brake disc bodies 1, each brake disc body 1 is of an annular structure, the brake disc body 1 is radially divided into a plurality of annular regions 11, and each annular region 11 is provided with 33 heat dissipation ribs 4 distributed in a circular array; the cross section of the heat dissipation rib 4 is in a strip shape and comprises two parallel straight line sections and two circular arc sections arranged at two ends of the straight line sections; the straight line section is connected with the circular arc section in a tangent way; the ratio of the height h to the width b of the heat dissipation ribs 4 is 2: 1.

the heat dissipation ribs 4 are obliquely arranged on the brake disc body 1 according to a set angle, and the inclination directions of the heat dissipation ribs 4 in the adjacent annular areas 11 are opposite; annular intervals 12 are arranged between every two adjacent annular areas 11, and the widths of all the annular intervals 12 are equal; the boundary line of the annular gap 12 is tangent to the heat dissipation ribs 4 distributed on the side of the boundary line.

The heat dissipation ribs 4 are divided into first heat dissipation ribs 41 and second heat dissipation ribs 42; the annular regions 11 are divided into a plurality of groups by taking every two adjacent annular regions 11 as one group along the radial direction of the brake disc; one of the two annular regions 11 in each group is provided with only the first heat dissipation ribs 41, and the other is provided with only the second heat dissipation ribs 42;

the symmetric central line AB of the first heat dissipation rib 41 in the width direction forms an included angle of 45 degrees with the radial symmetric line OA of the middle point of the straight line section of the first heat dissipation rib 41 on the brake disc body 1, which is close to the outer side of the brake disc; the symmetrical center line of the second heat dissipation rib 42 in the length direction coincides with the symmetrical center line of the first heat dissipation rib 41 in the width direction.

The radial symmetry line OA of each first heat dissipation rib 41 intersects with at least 3 heat dissipation ribs, and at least 3 support points are formed in the radial direction of the brake disc, so that the deformation of the brake disc is reduced.

The lightweight automobile brake disc in the embodiment further comprises a brake disc mounting cap 3; the edge of the inner diameter of one brake disc body 1 is provided with a brake disc neck part 2, and the brake disc neck part 2 and a brake disc mounting cap 3 are fixedly connected into a whole; the neck part 2 of the brake disc is provided with a plurality of ventilation holes 5 which are distributed circumferentially; one end of the vent hole 5 is communicated with the gap between the radiating ribs, and the other end is communicated with the inner hole of the neck 2 of the brake disc.

During the in-service use, adopt the high temperature state of lightweight car brake disc can effectively improve the brake disc in this embodiment, reduce the brake disc simultaneously because of the warp deformation of the relative brake disc installation face that high temperature arouses and the risk such as the braking shake, braking abnormal sound, braking inefficacy that consequently leads to, and then promoted the controllability of car, riding comfort.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a lightweight car brake disc, includes the brake disc body with the axle center that two symmetries set up, and the brake disc body is loop configuration, its characterized in that: the brake disc body is divided into a plurality of annular areas along the radial direction, and a plurality of heat dissipation ribs distributed in a circular array are arranged in each annular area; the cross section of the heat dissipation rib is in a strip shape and comprises two parallel straight line sections and two circular arc sections arranged at two ends of each straight line section; the straight line section is connected with the circular arc section in a tangent mode;

2. The lightweight automotive brake disc of claim 1, wherein: the heat dissipation ribs are divided into a first heat dissipation rib and a second heat dissipation rib; the annular areas are divided into a plurality of groups by taking every two adjacent annular areas as a group along the radial direction of the brake disc; only the first heat dissipation ribs are arranged on one of the two annular areas in each group, and only the second heat dissipation ribs are arranged on the other annular area;

3. The lightweight automotive brake disc of claim 2, wherein: the radial symmetry line OA of each first heat dissipation rib intersects at least 3 heat dissipation ribs.

4. The lightweight automotive brake disc of claim 1, wherein: the ratio of the height h to the width b of the heat dissipation ribs is 2: 1.

5. The lightweight automotive brake disc of claim 1, wherein: the lightweight automobile brake disc further comprises a brake disc mounting cap; the edge of the inner diameter of one of the brake disc bodies is provided with a brake disc neck, and the brake disc neck and the brake disc mounting cap are fixedly connected into a whole through the brake disc neck; the neck of the brake disc is provided with a plurality of ventilation holes which are distributed circumferentially; one end of the ventilation hole is communicated with the gap between the radiating ribs, and the other end of the ventilation hole is communicated with the inner hole of the neck of the brake disc.