Multifunctional brake disc of electric vehicle

Abstract

The invention relates to a multifunctional brake disc of an electric vehicle, which mainly comprises a brake disc and is characterized in that the inner side of the circumference of the brake disc is provided with a plurality of notches; the outer side of the circumference of the brake disc at corresponding location of the notches is provided with a plurality of lugs; recesses among the lugs are set into locking holes; and the locking holes are matched with a spring bolt. In the multifunctional brake disc of the electric vehicle, as the inner side of the circumference of the brake disc is provided with the notches so as to reduce noise when braking is performed, and the periphery of the brake disc is provided with the lugs, airflow is generated when the brake disc rotates to perform accelerated cooling on heat generated when the braking is performed, and moreover, the recesses among the heat dissipation lugs are used as the locking holes, thus, the multifunctional brake disc of the electric vehicle has a very simple structure, and not only is easy to manufacture, reduces the cost but also improves the braking performance.

Description

technical field [0001] The invention relates to a brake disc of an electric vehicle brake, more specifically, a locking hole capable of muting noise and dissipating heat is arranged around the brake disc. Background technique [0002] At present, ZL200720043570.4, which has been publicly authorized and announced, the brake disc assembly with heat sink for electric vehicle brake is composed of interference fit between the outer ring wall of the brake disc and the heat sink inner ring gear of the heat sink. There is a gap between the ring edge and the outer ring wall of the heat sink, and the bottom of the gap groove is the bottom plane of the gap groove ring. [0003] However, due to the friction of the inner wall of the brake disc when it is subjected to the action of the brake block, heat is generated continuously. Radiating fins are arranged on the wall, but its effect is not obvious enough. When encountering a follow-up lock gate, a lock hole needs to be opened on the br...

AI Technical Summary

Problems solved by technology

[0003] However, due to the friction of the inner wall of the brake disc when it is subjected to the action of the brake block, heat is generated continuously. The heat sink is installed on the wall, but its effect is not obvious enough. When encountering the follow-up lock gate, the lock hole needs to be opened on the brake disc, and its defects are more obvious, and it cannot be installed, so it cannot be widely used.

[0004] Another disclosed brake disc assembly ZL200620073896.7 for electric bicycles, and ZL200620073868.5 brake disc cover for electric bicycles, these two structures are provided with a brake disc cover on the outside of the brake disc, and a lock is opened on the brake disc cover. Holes, the brake disc and the brake disc sleeve are welded and fixed together, so that the outer ring of the brake disc is continuously thickened, which not only increases the cost, but also has poorer heat dissipation, and the manufacturing is very complicated and consumes a lot of steel.

[0005] There is also a disclosed brake disc ZL200620125124.3 for brake discs for servo locks for bicycles and electric vehicles. An integrated brake sleeve is provided on the outer periphery of the brake box, and the unlocking lever hole groove is arranged on the brake sleeve. This structure is more advanced than the first three This structure is advanced, but it is still quite complicated, and the brake pads generate heat after continuous action, and the surface bonding of the brake pads is difficult to eliminate, resulting in noise and affecting the braking effect

[0006] There is another open brake lock, public number: CN2928640Y, the structure of the brake disc part is almost the same as that of the brake disc part in ZL200620125124.3, and the brake sleeve is arranged on the outer periphery of the brake disc to form the outer circumference of the brake disc sleeve and the brake disc. The inner side of the disc is full circle, and the notch is opened on the outer periphery of the brake disc sleeve as the locking hole. The structure is relatively complicated, and the manufacturing cost is high. During continuous use, it will be difficult to eliminate the bonded body on the surface of the brake block, resulting in noise and affecting Braking effect, and consume a lot of materials, manufacturing is very complicated

[0007] There is also a disclosed all-weather forced passive air-cooled brake drum, patent number: 200720126296.7, a certain number of perforations are set on the inner side of the brake drum, and the outer periphery is reinforced by setting ribs to strengthen the perforated killing drum structure. This structure Although it has a certain heat dissipation effect, it is easy for the sediment and sewage in the external environment to enter the internal structure, causing brake pads and drums to wear and generate noise, and the perforated structure is easy to emit noise. This structure seriously affects the braking effect and Brake drum service life, so not widely adopted

[0008] Another automobile drum brake lining, publication number: CN1644952A, has a cooling groove 4 on the inner circular arc surface 2 of the lining main body 1, so as to reduce the cost and accelerate the heat dissipation. The friction area with the wheel drum is greatly reduced, and the braking performance is greatly reduced. In addition, the lining is a fragile piece, and the groove will be ground quickly, losing the effect of heat dissipation. The structure of the lining is fixed, and the wheel The drum rotates, so when braking, the airflow generated in the groove of the lining is limited, and the friction between the lining and the brake drum is continuous friction, and the heat increases continuously during braking, so the heat dissipation performance during friction has not changed, reaching Less than ideal effect

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