Brake drum convenient for heat dissipation

Abstract

The utility model discloses a brake drum convenient to dissipate heat, and belongs to the technical field of automobiles. The problem that in the prior art, an automobile brake drum is poor in heat dissipation performance is solved. The brake device mainly comprises an annular protection plate, an annular brake plate is arranged in the protection plate, a heat dissipation cavity is formed between the protection plate and the brake plate, a plurality of air guide ribs are installed between the protection plate and the brake plate, and each air guide rib comprises multiple layers of air guide rings distributed at intervals in the vertical direction; each layer of air guide ring comprises a plurality of air guide blocks distributed at intervals in the circumferential direction, and the air guide blocks on every two adjacent layers of air guide rings are arranged in a staggered mode. And a plurality of ventilation holes are formed in the protection plate.

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology, and more specifically, it relates to a brake drum that facilitates heat dissipation. Background Technology

[0002] Drum brakes have been used in automobiles for nearly a century. Due to their reliability and powerful braking force, drum brakes are still used in many vehicle models (mostly on the rear wheels). Currently in the Chinese market, due to price differences in brakes, drum brakes remain the preferred choice for rear brakes on commercial vehicles, and brake drum products, as the main braking component, are constantly emerging. However, the failure rate of widely used brake drum products remains consistently high, and a major reason for this high failure rate is poor heat dissipation. Summary of the Invention

[0003] The purpose of this invention is to provide a brake drum that facilitates heat dissipation, thereby overcoming the problem of poor heat dissipation in existing automotive brake drums.

[0004] This utility model is achieved by the following technical solution: a brake drum that facilitates heat dissipation, comprising an annular protective plate, an annular brake plate disposed inside the protective plate, a heat dissipation cavity provided between the protective plate and the brake plate, and multiple air guide ribs installed between the protective plate and the brake plate. The air guide ribs include multiple layers of air guide rings distributed vertically at intervals, each layer of air guide rings including multiple air guide blocks distributed circumferentially at intervals, with the air guide blocks on adjacent layers of air guide rings arranged alternately; the protective plate has multiple ventilation holes.

[0005] Furthermore, the lower inner wall of the protective plate is provided with an annular boss, and the bottom of the brake plate is fixedly connected to the boss.

[0006] Furthermore, an inwardly extending inner flange is installed at the bottom of the protective plate, and a fixing hole is provided on the inner flange.

[0007] Furthermore, the air guide rib includes five layers of air guide rings distributed at vertical intervals.

[0008] Furthermore, in the five-layer air guide ring, the air guide blocks in the middle three layers are all cylindrical.

[0009] Furthermore, in the five-layer air guide ring, the inner end face of the air guide block in the uppermost air guide ring is an arc-shaped surface, and the inner end face of the air guide block in the lowermost air guide ring is an arc-shaped surface.

[0010] Furthermore, hoop rings are installed on the upper and lower sides of the protective plate respectively.

[0011] Furthermore, the hoop rings on both the upper and lower sides are interference-fitted with the protective plate, and the hoop rings on both the upper and lower sides are fixedly connected to the protective plate by screws.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features a double-layered brake drum structure, with a brake plate inside the protective plate and a heat dissipation cavity between the protective plate and the brake plate. Compared to the existing one-piece brake drum, the heat dissipation cavity can dissipate heat from the brake plate more quickly, thus dissipating heat from the brake drum more quickly.

[0014] This invention designs the air guide ribs as a multi-layer air guide ring structure, with each layer including multiple air guide blocks spaced apart along the circumference. The air guide blocks on adjacent layers are arranged in an alternating manner, which allows the air channels in the heat dissipation cavity to be interconnected, enhancing the air circulation of the heat dissipation cavity, thereby improving the heat dissipation capacity and making the heat dissipation in the entire heat dissipation cavity more uniform. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 and Figure 3 These are cross-sectional views of this utility model;

[0017] Figure 4 This is a perspective view of the present invention when the hoop is installed.

[0018] In the diagram: 1. Protective plate; 2. Braking plate; 3. Heat dissipation cavity; 4. Air guide rib; 5. Air guide ring; 6. Air guide block; 7. Ventilation hole; 8. Boss; 9. Inner flange; 10. Arc surface; 11. Hoop ring. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort should fall within the scope of protection of this utility model.

[0020] A brake drum that facilitates heat dissipation includes an annular protective plate 1, an annular brake plate 2 disposed inside the protective plate 1, and an annular boss 8 provided on the lower inner wall of the protective plate 1. The bottom of the brake plate 2 is fixedly connected to the boss 8. In this utility model, the protective plate 1 and the brake plate 2 are fixedly connected.

[0021] A heat dissipation cavity 3 is provided between the protection plate 1 and the brake plate 2. By providing the heat dissipation cavity 3, compared with the integral brake drum in the prior art, the heat dissipation cavity 3 can dissipate heat from the brake plate 2 more quickly, that is, dissipate heat from the brake drum more quickly.

[0022] Multiple air guide ribs 4 are installed between the protective plate 1 and the brake plate 2. Each air guide rib 4 includes multiple layers of air guide rings 5 ​​spaced vertically. Each layer of air guide ring 5 includes multiple air guide blocks 6 spaced circumferentially. The air guide blocks 6 on adjacent layers of air guide rings 5 ​​are staggered. The air guide blocks 6 are fixedly connected to the protective plate 1 and the brake plate 2, respectively. This invention designs the air guide ribs 4 as a multi-layered air guide ring 5 structure, with each layer of air guide ring 5 including multiple air guide blocks 6 spaced circumferentially, and the air guide blocks 6 on adjacent layers of air guide rings 5 ​​being staggered. This allows the air ducts within the heat dissipation cavity 3 to be interconnected, enhancing the airflow of the heat dissipation cavity 3, thereby improving the heat dissipation capacity and making the heat dissipation within the entire heat dissipation cavity 3 more uniform.

[0023] The protective plate 1 has multiple ventilation holes 7. By opening ventilation holes 7 on the protective plate 1, this utility model can improve the ventilation of the heat dissipation cavity 3, thereby improving the heat dissipation capacity of the heat dissipation cavity 3.

[0024] The bottom of the protective plate 1 is fitted with an inwardly extending inner flange 9, which has a fixing hole.

[0025] The air guide rib 4 includes five layers of air guide rings 5 ​​arranged vertically at intervals. In the five layers of air guide rings 5, the air guide blocks 6 in the middle three layers of air guide rings 5 ​​are all cylindrical. In the five layers of air guide rings 5, the inner end face of the air guide block 6 in the uppermost air guide ring 5 is an arc-shaped surface 10, and the inner end face of the air guide block 6 in the lowermost air guide ring 5 is also an arc-shaped surface 10. This utility model enhances the airflow in the heat dissipation cavity 3 between the protective plate 1 and the brake plate 2 by designing the air guide blocks 6 in the middle three layers of air guide rings 5 ​​as cylindrical, the inner end face of the air guide block 6 in the uppermost air guide ring 5 as an arc-shaped surface 10, and the inner end face of the air guide block 6 in the lowermost air guide ring 5 as an arc-shaped surface 10.

[0026] Hoops 11 are respectively installed on the upper and lower sides of the protective plate 1.

[0027] Both the upper and lower hoop rings 11 are interference-fitted with the protective plate 1, and both the upper and lower hoop rings 11 are fixedly connected to the protective plate 1 by screws. By setting the upper and lower hoop rings 11, this utility model can significantly improve the structural strength of the brake drum. Currently, the upper and lower end faces of the brake drum are prone to deformation and failure due to the force and force transmission. The hoop rings 11 can effectively suppress the deformation of the brake drum.

Claims

1. A brake drum that facilitates heat dissipation, characterized in that, The device includes a ring-shaped protective plate (1), inside which is a ring-shaped brake plate (2). A heat dissipation cavity (3) is provided between the protective plate (1) and the brake plate (2). Multiple air guide ribs (4) are installed between the protective plate (1) and the brake plate (2). Each air guide rib (4) includes multiple layers of air guide rings (5) distributed vertically. Each layer of air guide ring (5) includes multiple air guide blocks (6) distributed circumferentially. The air guide blocks (6) on adjacent layers of air guide rings (5) are staggered. Multiple ventilation holes (7) are provided on the protective plate (1).

2. The brake drum for easy heat dissipation according to claim 1, characterized in that, The lower inner wall of the protective plate (1) is provided with an annular boss (8), and the bottom of the brake plate (2) is fixedly connected to the boss (8).

3. The brake drum for easy heat dissipation according to claim 1, characterized in that, The bottom of the protective plate (1) is fitted with an inwardly extending inner flange (9), and a fixing hole is provided on the inner flange (9).

4. The brake drum for easy heat dissipation according to claim 1, characterized in that, The air guide rib (4) includes five layers of air guide rings (5) distributed vertically at intervals.

5. The brake drum for easy heat dissipation according to claim 4, characterized in that, In the five-layer air guide ring (5), the air guide blocks (6) in the middle three layers of air guide ring (5) are all cylindrical.

6. The brake drum for easy heat dissipation according to claim 5, characterized in that, In the five-layer air guide ring (5), the inner end face of the air guide block (6) in the uppermost air guide ring (5) is an arc-shaped surface (10), and the inner end face of the air guide block (6) in the lowermost air guide ring (5) is an arc-shaped surface (10).

7. The brake drum for easy heat dissipation according to claim 1, characterized in that, Hoop rings (11) are installed on the upper and lower sides of the protective plate (1).

8. The brake drum for easy heat dissipation according to claim 7, characterized in that, The hoop (11) on both the upper and lower sides are both interference fit with the protective plate (1), and the hoop (11) on both the upper and lower sides are both fixedly connected to the protective plate (1) by screws.

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