CN221897004U - Brake disc for inhibiting umbrella-shaped deformation - Google Patents

Abstract

The utility model discloses a brake disc for suppressing umbrella-shaped deformation, comprising: a main disc body, a sub-disc body, a flange support and a flange fixed on the flange support, the main disc body and the sub-disc body are annular, the main disc body and the sub-disc body are fixedly connected by at least a plurality of circumferentially uniformly distributed reinforcing ribs, a heat dissipation duct is provided between the main disc body and the sub-disc body, the inner side ends of the main disc body and the sub-disc body respectively extend to the outer peripheral surface of the flange support and are fixedly connected to the flange support, the flange support is provided with a plurality of circumferentially uniformly distributed support air holes, and the support air holes are communicated with the heat dissipation duct. The connection between the flange support and the main disc body and the sub-disc body is changed from being connected with one disc body to being connected with two disc bodies at the same time, so as to avoid umbrella-shaped deformation caused by inconsistent heat dissipation efficiency of the two disc bodies, thereby greatly slowing down the cracking time of the brake disc and improving the service life of the brake disc. In addition, the forces on the main disc body and the sub-disc body are limited by the reinforcing ribs and the flange support, so as to enhance the rigidity and strength of the brake disc.

Description

Brake disc that suppresses umbrella-shaped deformation

Technical Field

The utility model belongs to the technical field of automobile wheel end assemblies, and in particular relates to a brake disc capable of suppressing umbrella-shaped deformation.

Background Art

The brake disc is used for braking, and its braking force comes from the brake caliper. Generally speaking, the general brake caliper is fixed to the part where the inner brake piston pump is located, and the outer side is a caliper-type structure. The inner brake pad is fixed to the piston pump, and the outer brake pad is fixed to the outside of the caliper. The piston pushes the inner brake pad through the pressure from the brake oil pipe, and at the same time pulls the caliper through the reaction force, so that the outer brake pad moves inward. Both press against the brake disc at the same time, and the braking force is generated by the friction between the brake disc and the inner and outer brake pads.

Most commercial vehicle brake discs are ventilated discs. The brake disc includes two disc bodies and a flange support. The main disc body and the auxiliary disc body are both arranged in a ring shape. The two disc bodies are connected by reinforcing ribs. A heat dissipation duct is formed between the multiple reinforcing ribs between the two disc bodies. Usually the flange support is assembled and connected to the wheel hub. The flange support is only connected to one of the disc bodies. The two braking surfaces are subjected to the same braking force and the temperature rise is the same. However, due to different connection forms, the heat dissipation efficiency is inconsistent, the temperature is uneven, and an umbrella-shaped deformation phenomenon occurs, which ultimately accelerates the cracking of the brake disc and reduces the service life of the brake disc.

Utility Model Content

In view of the above-mentioned shortcomings, the technical problem to be solved by the utility model is to provide a brake disc which can be evenly cooled and heated and has a long service life and can inhibit umbrella-shaped deformation.

In order to solve the above technical problems, the technical solution of the utility model is:

A brake disc for suppressing umbrella-shaped deformation comprises: a main disc body, a sub-disc body, a flange support and a flange fixed on the flange support, the main disc body and the sub-disc body are annular, the main disc body and the sub-disc body are fixedly connected by at least a plurality of circumferentially evenly distributed reinforcing ribs, a heat dissipation duct is provided between the main disc body and the sub-disc body, the inner ends of the main disc body and the sub-disc body extend to the outer circumferential surface of the flange support and are fixedly connected to the flange support, the flange support is provided with a plurality of circumferentially evenly distributed support air holes, and the support air holes are communicated with the heat dissipation duct.

Preferably, a main annular groove is provided at the connection point between the main disc body and the flange support, and a secondary annular groove is provided at the connection point between the secondary disc body and the flange support.

Preferably, the reinforcing ribs include first reinforcing ribs, second reinforcing ribs and third reinforcing ribs which are evenly distributed circumferentially. From the outside to the inside, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are arranged in sequence, adjacent first reinforcing ribs and second reinforcing ribs are staggered, and adjacent second reinforcing ribs and third reinforcing ribs are staggered.

Preferably, the outer end of the second reinforcing rib extends between two adjacent first reinforcing ribs, and the inner end of the second reinforcing rib extends between two adjacent third reinforcing ribs.

Preferably, the support air hole is opposite to the third reinforcing rib.

Preferably, a portion of the flange support located between the main disk body and the auxiliary disk body and a connection point between the main disk body and the auxiliary disk body are transitioned with a rounded corner.

Preferably, the connections between the first reinforcing rib, the second reinforcing rib and the third reinforcing rib and the main disk body and the auxiliary disk body are rounded.

Preferably, the main disk body, the auxiliary disk body, the flange support, the flange, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are integrally arranged.

After adopting the above technical solution, the beneficial effects of the utility model are:

The connection between the flange support and the main disc body and the auxiliary disc body is improved from the prior art that the flange support is connected to one disc body to the connection with two disc bodies at the same time. This design can avoid the umbrella-shaped deformation caused by the inconsistent heat dissipation efficiency of the two disc bodies, thereby greatly slowing down the cracking time of the brake disc and improving the service life of the brake disc. In addition, the force of the main disc body and the auxiliary disc body is not only limited by the reinforcing ribs, but also by the flange support, which enhances the rigidity and strength of the brake disc.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of an embodiment of a brake disc for suppressing umbrella-shaped deformation according to the utility model;

FIG2 is a schematic diagram of the three-dimensional structure of an embodiment of the brake disc for suppressing umbrella-shaped deformation of the utility model from another perspective;

FIG3 is a schematic diagram of a radial cross-sectional structure of a brake disc for suppressing umbrella-shaped deformation according to the present invention;

Fig. 4 is a schematic cross-sectional view of the structure along the line A-A in Fig. 3;

FIG5 is an enlarged schematic diagram of the structure of portion B in FIG4 ;

In the figure: 1. main disk body; 11. main ring groove; 2. auxiliary disk body; 21. auxiliary ring groove; 3. flange support; 31. support air hole; 4. flange; 5. heat dissipation air duct; 6. first reinforcing rib; 7. second reinforcing rib; 8. third reinforcing rib.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

As shown in Figures 1 to 5, a brake disc for suppressing umbrella-shaped deformation includes: a main disc body 1, a sub-disc body 2, a flange support 3 and a flange 4 fixed on the flange support 3. The main disc body 1 and the sub-disc body 2 are annular, and the main disc body 1 and the sub-disc body 2 are fixedly connected by at least a plurality of circumferentially uniformly distributed reinforcing ribs. The space between the main disc body 1 and the sub-disc body 2 is formed with a heat dissipation duct 5. The inner ends of the main disc body 1 and the sub-disc body 2 extend to the outer peripheral surface of the flange support 3 and are fixedly connected to the flange support 3. The flange support 3 is provided with a plurality of circumferentially uniformly distributed support air holes 31, and the support air holes 31 are communicated with the heat dissipation duct 5.

The connection between the flange support 3 and the main disc body 1 and the auxiliary disc body 2 is improved from the connection with one disc body in the prior art to the connection with two disc bodies at the same time. This design can avoid the umbrella-shaped deformation caused by the inconsistent heat dissipation efficiency of the two disc bodies, thereby greatly slowing down the cracking time of the brake disc and improving the service life of the brake disc. In addition, the force of the main disc body 1 and the auxiliary disc body 2 is not only limited by the reinforcing ribs, but also by the flange support 3, which enhances the rigidity and strength of the brake disc.

A main annular groove 11 is provided at the connection between the main disc body 1 and the flange support 3, and a secondary annular groove 21 is provided at the connection between the secondary disc body 2 and the flange support 3. The main annular groove 11 and the secondary annular groove 21 are used to optimize the structure of the main disc body 1 and the secondary disc body 2, so that the cross-sections of the connection between the two disc bodies and the flange support 3 are basically the same, so that the heat dissipation efficiency and thermal deformation of the connection are also basically the same, and the umbrella-shaped deformation caused by different heat dissipation efficiencies is further suppressed.

As shown in Figure 5, the reinforcing ribs include a first reinforcing rib 6, a second reinforcing rib 7 and a third reinforcing rib 8, which are uniformly distributed circumferentially. The three reinforcing rib arrays can enhance the reliability of the connection between the main disc body 1 and the auxiliary disc body 2. From the outside to the inside, the first reinforcing rib 6, the second reinforcing rib 7 and the third reinforcing rib 8 are arranged in sequence, the adjacent first reinforcing ribs 6 and the second reinforcing ribs 7 are staggered, and the adjacent second reinforcing ribs 7 and the third reinforcing rib 8 are staggered. The airflow between the two first reinforcing ribs 6 is blocked and diverted by the second reinforcing rib 7, and the two airflows flow into the gaps on both sides of the second reinforcing rib 7 respectively. The airflow between the adjacent second reinforcing ribs 7 is blocked and diverted by the third reinforcing rib 8, and the two airflows flow into the gaps on both sides of the third reinforcing rib 8 respectively, which can increase the contact time between the airflow and the brake disc and improve the heat dissipation effect (the opposite is true when the airflow flows from the inside to the outside).

The outer end of the second reinforcing rib 7 extends between two adjacent first reinforcing ribs 6, and the inner end of the second reinforcing rib 7 extends between two adjacent third reinforcing ribs 8, thereby shortening the distance between the first reinforcing ribs 6 and the third reinforcing ribs 8 and the second reinforcing rib 7, which has a significant effect on airflow diversion and can force the airflow to flow along the surface of the reinforcing ribs, thereby enhancing the heat dissipation efficiency.

Furthermore, the support air hole 31 is arranged opposite to the third reinforcing rib 8, and the airflow will not flow directly into the support air hole 31 from between the two third reinforcing ribs 8, but will be blocked and flow to the support air holes 31 on both sides, further increasing the contact time between the airflow and the brake disc and improving the heat dissipation effect.

The portion of the flange support 3 between the main disk body 1 and the auxiliary disk body 2 has a rounded transition at the connection with the main disk body 1 and the auxiliary disk body 2, and the connection between the first reinforcing rib 6, the second reinforcing rib 7 and the third reinforcing rib 8 and the main disk body 1 and the auxiliary disk body 2 is rounded to prevent stress concentration.

The main plate body 1, the auxiliary plate body 2, the flange support 3, the flange 4, the first reinforcing rib 6, the second reinforcing rib 7 and the third reinforcing rib 8 are integrally arranged by casting, and the production process is simple, the cost is low and the production efficiency is high.

The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims (6)

1. A brake disc for suppressing umbrella-shaped deformation, comprising: a main disc body, a sub-disc body, a flange support and a flange fixed to the flange support, the main disc body and the sub-disc body are annular, the main disc body and the sub-disc body are fixedly connected by at least a plurality of circumferentially uniformly distributed reinforcing ribs, a heat dissipation duct is provided between the main disc body and the sub-disc body, characterized in that the inner side ends of the main disc body and the sub-disc body respectively extend to the outer peripheral surface of the flange support and are fixedly connected to the flange support, the flange support is provided with a plurality of circumferentially uniformly distributed support air holes, and the support air holes are communicated with the heat dissipation duct; The reinforcing ribs include first reinforcing ribs, second reinforcing ribs and third reinforcing ribs which are uniformly distributed in the circumferential direction, respectively. From the outside to the inside, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are arranged in sequence, the adjacent first reinforcing ribs and the second reinforcing ribs are staggered, and the adjacent second reinforcing ribs and the third reinforcing ribs are staggered; The outer end of the second reinforcing rib extends between two adjacent first reinforcing ribs, and the inner end of the second reinforcing rib extends between two adjacent third reinforcing ribs. 2. A brake disc for suppressing umbrella-shaped deformation as described in claim 1, characterized in that a main annular groove is provided at the connection between the main disc body and the flange support, and a secondary annular groove is provided at the connection between the secondary disc body and the flange support. 3. A brake disc for suppressing umbrella-shaped deformation as claimed in claim 1, characterized in that the support air hole is opposite to the third reinforcing rib. 4. A brake disc for suppressing umbrella-shaped deformation as claimed in claim 1, characterized in that a portion of the flange support located between the main disc body and the auxiliary disc body is transitioned with a rounded corner at the junction of the main disc body and the auxiliary disc body. 5. A brake disc for suppressing umbrella-shaped deformation according to claim 1, characterized in that the connection between the first reinforcing rib, the second reinforcing rib and the third reinforcing rib and the main disc body and the auxiliary disc body is rounded. 6. A brake disc for suppressing umbrella-shaped deformation as claimed in claim 1, characterized in that the main disc body, the auxiliary disc body, the flange support, the flange, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are integrally arranged.