Electric scooter drum brake with brake assembly

Abstract

The utility model discloses an electric scooter drum brake with a brake assembly, which belongs to the technical field of electric scooter drum brakes and comprises a drum brake shell, a rotating shaft is rotatably connected to the inner bottom of the drum brake shell, two groups of brake shoes are arranged on the outer wall of the rotating shaft, mounting blocks are arranged on the inner side walls of the two groups of brake shoes, and two groups of springs are arranged in the drum brake shell. An extrusion block is arranged in the drum brake shell, a rotating rod is arranged at the bottom of the extrusion block, one end of the rotating rod penetrates through the inner bottom of the drum brake shell and is connected with a connecting rod arranged outside, cavities are formed in the two brake shoes, and heat dissipation assemblies are arranged in the two cavities; the heat dissipation effect of the brake pad can be improved under the action of the heat dissipation assembly, the brake pad can rapidly dissipate heat after braking is completed, and the braking effect of the brake pad can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric scooter drum brakes, in particular to an electric scooter drum brake provided with a brake assembly. Background Art

[0002] Battery vehicles are also called "electric vehicles". They are pure electric vehicles that are powered by batteries and driven by electric motors. In recent years, they have been widely popularized in my country. The brake devices of electric scooters mostly adopt drum brake structures. The drum brake structure has the advantages of low cost and strong braking force. Currently, drum brakes mostly use brake pads for braking, but the surface of the brake pads will be in a high temperature state after braking. Currently, the heat dissipation effect of the brake pads is poor and it is difficult to dissipate heat quickly, which will affect the braking effect. Therefore, we propose an electric scooter drum brake with a brake assembly. Utility Model Content

[0003] The purpose of the utility model is to provide an electric scooter drum brake with a brake assembly to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric scooter drum brake with a brake assembly, comprising a drum brake shell, a rotating shaft is rotatably connected to the bottom of the drum brake shell, two groups of brake shoes are arranged on the outer wall of the rotating shaft, the inner side walls of the two groups of brake shoes are provided with mounting blocks, two groups of springs are arranged in the drum brake shell, the two ends of the two groups of springs are respectively connected to one end of the two groups of mounting blocks on the left and right sides, an extrusion block is arranged in the drum brake shell, a rotating rod is arranged at the bottom of the extrusion block, one end of the rotating rod passes through the bottom of the drum brake shell and is connected to a connecting rod arranged on the outside, cavities are opened in the two groups of brake shoes, and heat dissipation components are arranged in the two groups of cavities.

[0005] Furthermore, the heat dissipation assembly includes a second heat conducting plate provided in the cavity, a plurality of groups of heat absorbing blocks are provided on the outer side wall of the second heat conducting plate, one ends of the plurality of groups of heat absorbing blocks are connected to the inner side wall of the brake pad, a first heat conducting plate is provided in the drum brake shell, one end of the first heat conducting plate is connected to the inner side wall of the second heat conducting plate, a heat sink is provided at the bottom of the drum brake shell, three groups of heat conducting blocks are provided on the top of the heat sink, one ends of the three groups of heat conducting blocks pass through the bottom of the drum brake shell and contact the bottom of the first heat conducting plate.

[0006] Furthermore, a plurality of groups of the heat absorption blocks are distributed in a ring array on the outer side wall of the second heat conducting plate.

[0007] Furthermore, the second heat conducting plate is arranged in an arc shape.

[0008] Furthermore, a plurality of heat dissipation holes are provided at the bottom of the heat dissipation plate.

[0009] Compared with the prior art, the utility model has the beneficial effect that the heat dissipation effect of the brake pad can be improved under the action of the heat dissipation component, so that the brake pad can quickly dissipate heat after braking, and the braking effect of the brake pad can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a bottom view of the structure of the utility model;

[0012] Figure 3 It is a top view of the cavity inner wall structure of the utility model.

[0013] In the figure: 1. drum brake housing; 2. rotating rod; 3. connecting rod; 4. extrusion block; 5. brake shoe; 6. brake pad; 7. rotating shaft; 8. spring; 9. mounting block; 10. heat dissipation assembly; 100. heat conduction block; 101. first heat conduction plate; 102. heat dissipation plate; 103. heat dissipation hole; 104. heat absorption block; 105. second heat conduction plate; 11. cavity. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Embodiment 1:

[0016] See also Figure 1-3 The utility model provides a technical solution: an electric scooter drum brake with a brake assembly, comprising a drum brake shell 1, a rotating shaft 7 is rotatably connected to the bottom of the drum brake shell 1, two groups of brake shoes 5 are arranged on the outer wall of the rotating shaft 7, and the inner side walls of the two groups of brake shoes 5 are provided with mounting blocks 9, two groups of springs 8 are arranged in the drum brake shell 1, and the two ends of the two groups of springs 8 are respectively connected to one end of the two groups of mounting blocks 9 on the left and right sides, an extrusion block 4 is arranged in the drum brake shell 1, and a rotating rod 2 is arranged at the bottom of the extrusion block 4, and one end of the rotating rod 2 passes through the bottom of the drum brake shell 1 and is connected to a connecting rod 3 arranged on the outside, and cavities 11 are opened in the two groups of brake shoes 5, and heat dissipation components 10 are arranged in the two groups of cavities 11.

[0017] See also Figure 1-3The heat dissipation component 10 includes a second heat conducting plate 105 provided in the cavity 11, the second heat conducting plate 105 is arranged in an arc shape, and a plurality of groups of heat absorbing blocks 104 are provided on the outer wall of the second heat conducting plate 105, one end of each of the plurality of groups of heat absorbing blocks 104 is connected to the inner wall of the brake pad 6, and the plurality of groups of heat absorbing blocks 104 are distributed in a ring array on the outer wall of the second heat conducting plate 105, a first heat conducting plate 101 is provided in the drum brake shell 1, and one end of the first heat conducting plate 101 is connected to the inner wall of the second heat conducting plate 105, a heat dissipation plate 102 is provided at the bottom of the drum brake shell 1, and a plurality of groups of heat dissipation holes 103 are provided at the bottom of the heat dissipation plate 102, and the heat dissipation effect can be further improved under the action of the heat dissipation holes 103, so as to ensure that the brake pad 6 can quickly dissipate heat after braking, and three groups of heat conducting blocks 100 are provided on the top of the heat dissipation plate 102, and one end of each of the three groups of heat conducting blocks 100 passes through the bottom of the drum brake shell 1 and contacts the bottom of the first heat conducting plate 101.

[0018] Working principle: When the electric scooter needs to brake, the hand squeezes the brake handle, the brake handle drives the brake line to be pulled, the brake line drives the connecting rod 3 to rotate, the connecting rod 3 drives the rotating rod 2 to rotate, the rotating rod 2 drives the extrusion block 4 to rotate, the extrusion block 4 can rotate the brake shoe 5, the brake shoe 5 drives the brake pad 6 to rotate, the brake pad 6 rubs against the inner wall of the drum brake shell 1 to brake, and the friction generates a lot of heat. After the braking is completed, when the brake pad 6 separates from the inner wall of the drum brake shell 1, the first heat conduction plate 101 and the heat conduction plate 102 are connected. The heat block 100 is in contact with the brake pad 6, and under the action of the heat absorbing block 104, the heat generated by the brake pad 6 can be transferred to the second heat conducting plate 105, the first heat conducting plate 101 and the heat conducting block 100 in sequence. The heat conducting block 100 can transfer the heat to the heat sink 102, and the heat sink 102 can dissipate the heat. As the electric scooter runs, the heat sink 102 can fully contact with the air to improve the heat dissipation effect. At the same time, under the action of the heat dissipation hole 103, the heat dissipation effect can be further improved to ensure that the brake pad 6 can quickly dissipate heat after braking.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drum brake for an electric scooter with a brake assembly, comprising a drum brake shell (1), a rotating shaft (7) being rotatably connected to the inner bottom of the drum brake shell (1), two groups of brake shoes (5) being arranged on the outer wall of the rotating shaft (7), and mounting blocks (9) being arranged on the inner side walls of the two groups of brake shoes (5), two groups of springs (8) being arranged in the drum brake shell (1), two ends of the two groups of springs (8) being respectively connected to one end of two groups of mounting blocks (9) on the left and right sides, an extrusion block (4) being arranged in the drum brake shell (1), a rotating rod (2) being arranged at the bottom of the extrusion block (4), one end of the rotating rod (2) penetrating the inner bottom of the drum brake shell (1) and being connected to a connecting rod (3) arranged on the outside, characterized in that: Both groups of brake shoes (5) are provided with cavities (11), and both groups of cavities (11) are provided with heat dissipation components (10).

2. The electric scooter drum brake with a brake assembly according to claim 1, characterized in that: The heat dissipation assembly (10) comprises a second heat conducting plate (105) disposed in the cavity (11); a plurality of groups of heat absorbing blocks (104) are disposed on the outer wall of the second heat conducting plate (105); one end of each of the plurality of groups of heat absorbing blocks (104) is connected to the inner wall of the brake pad (6); a first heat conducting plate (101) is disposed in the drum brake shell (1); one end of the first heat conducting plate (101) is connected to the inner wall of the second heat conducting plate (105); a heat dissipation plate (102) is disposed at the bottom of the drum brake shell (1); three groups of heat conducting blocks (100) are disposed on the top of the heat dissipation plate (102); one end of each of the three groups of heat conducting blocks (100) passes through the bottom of the drum brake shell (1) and contacts the bottom of the first heat conducting plate (101).

3. The electric scooter drum brake with a brake assembly according to claim 2, characterized in that: A plurality of groups of the heat absorbing blocks (104) are distributed in a ring array on the outer side wall of the second heat conducting plate (105).

4. The electric scooter drum brake with a brake assembly according to claim 2, characterized in that: The second heat conducting plate (105) is arranged in an arc shape.

5. The electric scooter drum brake with a brake assembly according to claim 1, characterized in that: A plurality of heat dissipation holes (103) are provided at the bottom of the heat dissipation plate (102).

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