CN215673309U - Ventilation automobile brake disc - Google Patents

Abstract

The utility model belongs to the technical field of automobile brake discs, and relates to a ventilated automobile brake disc which comprises two symmetrically arranged coaxial brake disc bodies, wherein the brake disc bodies are of an annular structure, and long heat dissipation ribs are arranged between the two brake disc bodies and fixedly connected into a whole through the long heat dissipation ribs; short heat dissipation ribs are further arranged on the two brake disc bodies; the width of the section of the short heat dissipation rib is gradually reduced from outside to inside along the radial direction of the brake disc body; gaps are reserved between the short heat dissipation ribs and the outer edge of the brake disc body, and the short heat dissipation ribs extend to 1/3-2/3 in the radial direction of the brake disc body; the long radiating ribs and the short radiating ribs are distributed in a radial shape at intervals in an alternating mode around the axis of the brake disc body. According to the utility model, the short radiating ribs with variable cross sections are arranged on the brake disc body, and the radiating area of the outer side of the brake disc is larger than that of the inner side of the brake disc, so that the radiating effects of the inner side and the outer side of the brake disc are adaptive to the temperature gradient, the temperature is uniform, and the thermal deformation is consistent.

Description

Ventilation automobile brake disc

Technical Field

The utility model belongs to the technical field of automobile brake discs, and relates to a ventilated automobile brake disc.

Background

At present, national regulations have stricter requirements on oil consumption and carbon dioxide emission of automobiles, and each host factory has stricter control on performance and cost of the automobiles. For the brake disc, besides meeting various performance requirements which are severe for customers, the brake disc has advantages in weight and cost to meet market demands.

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. Therefore, there is a need for an automotive brake disc structure that effectively reduces thermal distortion when designing a brake disc and that effectively utilizes design weight to make the temperature distribution of the brake disc friction ring more uniform.

In the prior art, chinese patent with publication number CN213176568U discloses a ventilated type automobile brake disc, including the coaxial brake disc body 1 that a pair of symmetry set up, brake disc body 1 is the loop configuration, and the heat dissipation muscle fixed connection through interval distribution is as an organic whole between two brake disc bodies 1, and brake disc installation cap 2 is coaxial with brake disc body 1, and the brim of a hat of brake disc installation cap 2 is as an organic whole rather than the edge fixed connection of the internal diameter of one of brake disc body 1. The junction of the brake disc body 1 and the brake disc mounting cap 2 is a brake disc neck 21. The heat dissipation muscle includes long heat dissipation muscle 3 and short heat dissipation muscle 4, and short heat dissipation muscle 4 slightly is shorter than long heat dissipation muscle 3, and long heat dissipation muscle 3 and short heat dissipation muscle 4 are radial interval evenly distributed in turn around the axle center of brake disc body 1, and the inner of long heat dissipation muscle 3 extends to the brake disc body 1 internal diameter outside and is connected as an organic whole with brake disc neck 21 fillet, and the outer end of long heat dissipation muscle 3 extends to and is close to the outer border of brake disc body 1 but leaves an outer gap 12 between the border and the outer border, and the distance of outer gap 12 is 5-20 millimeters. An inner gap 11 is reserved between the position of the inner end of the short radiating rib 4 extending to the inner edge close to the brake disc body 1 and the inner edge, and the distance of the inner gap 11 is 5-20 mm. The outer ends of the short radiating ribs 4 extend to the outer edge of the brake disc body 1. The inner gap 11 communicates the short heat dissipation ribs 4 and the spaces between the long heat dissipation ribs 3 on two adjacent sides of the short heat dissipation ribs to form a heat dissipation channel, so that heat dissipation is facilitated.

However, the prior art has the following defects: the temperature unevenness that the friction of brake disc produced can arouse because of the inside and outside linear velocity of brake disc is uneven during braking, leads to brake disc thermal deformation inconsistent, arouses the braking shake.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a ventilated automobile brake disc, which solves the problems of uneven inside and outside temperatures and inconsistent thermal deformation of the brake disc.

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

a ventilated automobile brake disc comprises two symmetrically arranged coaxial brake disc bodies, wherein each brake disc body is of an annular structure, and a long heat dissipation rib is arranged between the two brake disc bodies and fixedly connected into a whole through the long heat dissipation rib; short heat dissipation ribs are further arranged on the two brake disc bodies; the width of the section of the short heat dissipation rib is gradually reduced from outside to inside along the radial direction of the brake disc body; gaps are reserved between the short heat dissipation ribs and the outer edge of the brake disc body, and the short heat dissipation ribs extend to 1/3-2/3 in the radial direction of the brake disc body; the long radiating ribs and the short radiating ribs are distributed in a radial shape at intervals in an alternating mode around the axis of the brake disc body.

According to the basic scheme, the short heat dissipation ribs with variable cross sections are arranged on the brake disc body, the heat dissipation area of the outer side of the brake disc is larger than that of the inner side of the brake disc, and is adaptive to the temperature gradient of the brake disc caused by uneven linear velocity of the inner side and the outer side of the brake disc, so that the heat dissipation area of a high-temperature position is large, the heat dissipation area of a low-temperature position is small, the temperature of the inner side and the outer side of the brake disc is uniform, and the thermal deformation is consistent; meanwhile, a heat dissipation air channel is formed between every two adjacent long heat dissipation ribs, and airflow is driven through rotation of the brake disc, so that the heat dissipation effect is enhanced.

Further, two short heat dissipation muscle symmetrical arrangement on the brake disc body, and leave the gap between two relative short heat dissipation muscle for the area of contact increase of air current and short heat dissipation muscle.

Further, the ventilated 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; gaps are reserved between the long radiating ribs and the outer edge of the brake disc body, and the long radiating ribs extend to the inner diameter edge of the brake disc body and are reserved with the edges of the neck of the brake disc; the size of the long radiating ribs is controlled while the radiating area of the long radiating ribs is increased, so that the weight of the brake disc is controlled.

Furthermore, the long radiating ribs are olive-shaped or shuttle-shaped.

Furthermore, the long heat dissipation ribs are multiple and prime.

Furthermore, the short heat dissipation ribs are in multiple pairs and are prime number pairs.

The utility model has the beneficial effects that:

1) according to the utility model, the long heat dissipation ribs and the short heat dissipation ribs are alternately arranged, so that the heat dissipation area of the outer side of the brake disc is increased, the temperature unevenness of the brake disc caused by different linear speeds of the inner side and the outer side is improved, the thermal deformation and the brake shake, the brake abnormal sound and the brake failure caused by the thermal deformation are reduced, and the controllability and the riding comfort of an automobile are further improved.

2) In the utility model, the number of the long radiating ribs and the logarithm of the short radiating ribs are prime numbers, so that the transmission of vibration waves can be cut off, and the noise is reduced.

Additional advantages, objects, and features of the utility model 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 utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

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

FIG. 1 is a schematic view of a brake disk according to the present invention;

fig. 2 is a cross-sectional view taken along line K-K in fig. 1.

Reference numerals: 1-a brake disc body; 2-long heat dissipation ribs; 3-short heat dissipation ribs; 4-brake disc neck; 5-brake disc mounting cap.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope 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 in a schematic way, 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 utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate 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 components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1-2, a ventilated automobile brake disc includes a pair of symmetrically disposed coaxial brake disc bodies 1, the brake disc bodies 1 are of an annular structure, and the two brake disc bodies 1 are fixed together by long heat dissipation ribs 2; the brake disc body 1 is also provided with short heat dissipation ribs 3; the short heat dissipation ribs 3 are of variable cross-section structures, and the cross-section width gradually decreases from outside to inside along the radial direction of the brake disc body 1; a gap is reserved between the large end of the short heat dissipation rib 3 and the outer edge of the brake disc body 1, and the small end of the short heat dissipation rib 3 extends to 1/2 in the radial direction of the brake disc body 1; the long radiating ribs 2 and the short radiating ribs 3 are distributed in a radial shape at intervals in an alternating manner around the axis of the brake disc body 1.

In this embodiment, the short heat dissipation ribs 3 on two brake disc bodies 1 are symmetrically arranged, and a gap is left between two opposite short heat dissipation ribs 3, so that the contact area between the airflow and the short heat dissipation ribs 3 is increased. The edge of the inner diameter of one brake disc body 1 is fixedly connected with a brake disc mounting cap 5 into a whole through a brake disc neck 4; the outer end of the long heat dissipation rib 2 extends to the position of the outer edge of the brake disc body 1, a gap is reserved between the outer edge and the position of the outer edge, and the inner end of the long heat dissipation rib 2 extends to the inner diameter edge of the brake disc body 1 and a fillet of the neck portion 4 of the brake disc to reserve a gap.

In this embodiment, the long heat dissipating ribs 2 are in a shuttle shape. The number of the long radiating ribs 2 and the logarithm of the short radiating ribs 3 are prime numbers.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on 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 claims of the present invention.

Claims (6)

1. The utility model provides a ventilation car brake disc, includes the brake disc body with the axle center that two symmetries set up, and the brake disc body is the loop configuration, its characterized in that: a long heat dissipation rib is arranged between the two brake disc bodies and fixedly connected into a whole through the long heat dissipation rib; short heat dissipation ribs are further arranged on the two brake disc bodies; the width of the section of the short heat dissipation rib is gradually reduced from outside to inside along the radial direction of the brake disc body; gaps are reserved between the short heat dissipation ribs and the outer edge of the brake disc body, and the short heat dissipation ribs extend to 1/3-2/3 in the radial direction of the brake disc body; the long radiating ribs and the short radiating ribs are distributed in a radial shape at intervals in an alternating mode around the axis of the brake disc body.

2. The ventilated vehicle brake disc of claim 1, wherein: two short heat dissipation muscle symmetrical arrangement on the brake disc body, and leave the gap between two relative short heat dissipation muscle.

3. The ventilated vehicle brake disc of claim 1, wherein: the ventilated 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; a gap is reserved between the long heat dissipation rib and the outer edge of the brake disc body, and the long heat dissipation rib extends to the inner diameter edge of the brake disc body and is reserved with the edge of the neck of the brake disc.

4. The ventilated vehicle brake disc of claim 1, wherein: the long heat dissipation ribs are olive-shaped or shuttle-shaped.

5. The ventilated vehicle brake disc of claim 1, wherein: the long heat dissipation ribs are multiple and prime.

6. The ventilated vehicle brake disc of claim 1, wherein: the short heat dissipation ribs are in multiple pairs and are prime number pairs.

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