A wheel rim structure of an integrated brake disc for a hub drive

Abstract

The utility model discloses a kind of rim structures of integrated brake disc for hub drive, including rim body and brake disc, the brake disc is annular, its outside has the mounting flange plate around its one week, and the mounting flange plate is integrally formed with brake disc;The brake disc is installed in the rim body by mounting flange plate, and is fixedly connected with rim body;Several ventilation holes are provided on the brake disc around its one week and penetrate its inside and outside side.This utility model integrates brake disc flange and brake disc together, enhances the integration of system;Ventilation hole and mounting flange plate cooperate to form separate air duct, can accelerate heat export, improve system heat dissipation efficiency;And hollow disc structure is used to reduce quality, reduce automobile running resistance.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub drive technology for new energy vehicles, and in particular to a wheel rim structure with an integrated brake disc for wheel hub drive. Background Technology

[0002] As the core component of a car's disc braking system, the brake disc's primary function is to convert the vehicle's kinetic energy into heat energy through friction with the brake pads, thereby achieving deceleration and braking. Structurally, brake discs can be divided into solid discs and ventilated discs. During braking, ventilated discs, through their perforated structure, can quickly dissipate heat, resulting in better braking performance. Therefore, compared to solid discs, ventilated discs have superior braking performance and a longer service life.

[0003] However, traditional ventilated discs are complex in structure and difficult to cast. When facing hub motor drive, electrification and high-performance braking scenarios, they still have problems such as large weight, poor aerodynamic noise suppression, large heat generation and slow heat dissipation.

[0004] Therefore, how to reduce mass while ensuring structural strength and accelerate heat dissipation to achieve intelligent and lightweight braking is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, the purpose of this utility model is to provide a rim structure for an integrated brake disc for hub drive. By integrating the brake disc flange and the brake disc together, the system's integration is enhanced; a streamlined, separate air duct is adopted to accelerate heat dissipation and improve the system's heat dissipation efficiency; and a hollow disc structure is used to reduce weight and lower vehicle drag.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a rim structure for an integrated brake disc for hub drive, comprising a rim body and a brake disc, characterized in that: the brake disc is annular, with a mounting flange around its outer side, and the mounting flange is integrally formed with the brake disc; the brake disc is mounted in the rim body through the mounting flange and is fixedly connected to the rim body; a plurality of ventilation holes penetrating its inner and outer sides are provided around the brake disc.

[0007] Furthermore, the mounting flange is located in the middle of the brake disc in the axial direction, its inner side is embedded in the brake disc, and the part of the ventilation hole near the outer side of the brake disc is divided into two parts.

[0008] Furthermore, the depth of the portion of the mounting flange embedded in the brake disc is greater than or equal to 1 / 4 of the radial width of the brake disc.

[0009] Furthermore, the outer side of the mounting flange has several splines, and the inner side of the rim body has a keyway corresponding to the splines. The brake disc and the rim are fixedly connected by the cooperation of the splines and the keyway.

[0010] Furthermore, the brake disc is located on the side of the rim closer to its open side.

[0011] Furthermore, the mounting flange is made of alloy steel, the brake disc is made of high thermal conductivity silicon carbide material, and the mounting flange and the brake disc are integrally formed.

[0012] Furthermore, the mounting flange and brake disc are integrally formed by fusion casting.

[0013] Furthermore, an annular air duct is formed on the inner side of the brake disc, which is connected to each ventilation hole.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The brake disc and mounting flange are formed as one piece, which enhances the overall integration and improves stability and strength.

[0016] 2. Ventilation holes are provided on the brake disc to form an air duct. The part of the ventilation hole near the outer side of the brake disc is divided into two parts by the mounting flange to form a separate air duct, thereby dividing the airflow into two parts, which can accelerate the heat dissipation and improve the heat dissipation efficiency and effect.

[0017] 3. The brake disc adopts a hollow structure, i.e., the whole is ring-shaped, while ensuring strength and rigidity. This can reduce the weight of the brake disc and reserve installation space for transmission shaft sensors, etc. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the brake disc structure.

[0020] Figure 3 This is a cross-sectional view of the brake disc.

[0021] Figure 4 This is a schematic diagram of the present invention in operation.

[0022] In the diagram: 1—rim, 2—brake disc, 3—mounting flange, 4—ventilation hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example: See Figures 1 to 4A rim structure for an integrated brake disc in a hub-driven system includes a rim body 1 and a brake disc 2. The brake disc 2 is annular, with a mounting flange 3 surrounding it on its outer side, and the mounting flange 3 is integrally formed with the brake disc 2. The brake disc 2 has a hollow structure, which reduces weight and driving resistance, and facilitates the installation of other components such as drive shaft sensors. In practice, the mounting flange 3 is made of alloy steel, and the brake disc 2 is made of high thermal conductivity silicon carbide material, with the mounting flange 3 integrally formed with the brake disc 2. As an optimization, the mounting flange 3 and the brake disc 2 are integrally formed by fusion casting, a mature process with good forming stability. Integrating the brake disc 2 and the mounting flange 3 together not only enhances the overall integration but also greatly improves the overall rigidity and strength.

[0025] The brake disc 2 is mounted on the rim 1 body via a mounting flange 3 and is fixedly connected to the rim 1 body. In practice, the mounting flange 3 has several splines on its outer side; inside the rim 1 body, there is a keyway corresponding to the splines. The brake disc 2 and the rim 1 are fixedly connected through the fit of the splines and the keyway. This makes installation more convenient, improves force transmission performance, and further enhances overall performance. During assembly, the brake disc 2 is located on the side of the rim 1 closest to its open side; thus, the rim 1 has sufficient space to install the hub motor and reduction mechanism, thereby reducing the overall size of the electric drive system.

[0026] A plurality of ventilation holes 4 are provided around the brake disc 2, penetrating its inner and outer sides. During processing, the mounting flange 3 is located at the center of the brake disc 2 in the axial direction, with its inner side embedded in the brake disc 2, dividing the portion of the ventilation holes 4 near the outer side of the brake disc 2 into two parts. This divides the airflow into two parts, effectively guiding the high-speed airflow through the interior of the brake disc, effectively reducing airflow resistance, accelerating heat dissipation, and preventing the brake disc from overheating and causing a decline in braking performance. As an optimization, the depth of the portion of the mounting flange 3 embedded in the brake disc 2 is greater than or equal to 1 / 4 of the radial width of the brake disc 2, thus giving the separation air duct a certain length, which can better guide the airflow and further accelerate heat dissipation. In practice, an annular air duct is formed around the brake disc 2 on the inner side, and this annular air duct is connected to each ventilation hole 4; this can effectively guide the airflow into the ventilation holes 4 (air duct), thereby better dissipating heat from the brake disc 2.

[0027] In this design, airflow enters from the middle of the brake disc 2 during operation, then flows outward through the ventilation hole 4. When the airflow passes through the mounting flange 3, it is separated by the mounting flange 3, forming two airflows. This accelerates the flow of air, thereby accelerating the removal of heat and improving the cooling of the brake disc 2, which is beneficial to ensuring the braking effect of the brake disc 2.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A rim structure for a hub-driven integrated brake disc, comprising a rim body and a brake disc, characterized in that: The brake disc is annular, with a mounting flange around its outer side, and the mounting flange is integrally formed with the brake disc. The brake disc is mounted on the rim body through the mounting flange and is fixedly connected to the rim body. Several ventilation holes penetrating its inner and outer sides are provided around the brake disc.

2. The rim structure for an integrated brake disc for hub drive according to claim 1, characterized in that: The mounting flange is located in the middle of the brake disc in the axial direction, with its inner side embedded in the brake disc, and it divides the part of the ventilation hole near the outer side of the brake disc into two parts.

3. The rim structure for an integrated brake disc for hub drive according to claim 2, characterized in that: The depth to which the mounting flange is embedded in the brake disc is greater than or equal to 1 / 4 of the radial width of the brake disc.

4. The rim structure of an integrated brake disc for hub drive according to claim 1, characterized in that: The mounting flange has several splines on its outer side, and a keyway corresponding to the splines is provided on the inner side of the rim body. The brake disc and the rim are fixedly connected by the cooperation of the splines and the keyway.

5. The rim structure for an integrated brake disc for hub drive according to claim 1, characterized in that: The brake disc is located on the side of the rim closest to its open side.

6. The rim structure of an integrated brake disc for hub drive according to claim 1, characterized in that: The mounting flange is made of alloy steel, and the brake disc is made of high thermal conductivity silicon carbide material. The mounting flange and the brake disc are formed as one piece.

7. The rim structure for an integrated brake disc for hub drive according to claim 6, characterized in that: The mounting flange and brake disc are integrally formed by fusion casting.

8. The rim structure of an integrated brake disc for hub drive according to claim 1, characterized in that: Inside the brake disc, there is a ring-shaped air duct that surrounds the brake disc and is connected to each ventilation hole.

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