Electric bicycle frame

Abstract

The invention discloses an electric bicycle frame which comprises a frame body and a front fork, the frame body comprises a head tube and an inclined tube, the head tube comprises a first inner tube and a first outer tube which are spaced, a plurality of reinforcing ribs are arranged between the first inner tube and the first outer tube, and a first wire passing hole and a limiting hole are formed; the front fork comprises a vertical pipe, a fork shoulder and a fork foot, an annular kidney-shaped hole is formed in one side of the fork shoulder, a protruding positioning piece is arranged on the other side of the fork shoulder, the annular kidney-shaped hole coincides with the first wire passing hole, and the positioning piece is arranged in the limiting hole. The head pipe is of an inner pipe and outer pipe structure, reinforcing ribs are arranged between the head pipe and the outer pipe to form a wire passing hole and a limiting hole, the wire passing hole is used for hiding a cable and a brake cable, the limiting hole is used for guaranteeing movable fit of a frame and a front fork, and the strength requirement of the head pipe is greatly improved; the bottom bracket is circumferentially welded with the upper layer and the lower layer of the seat tube, and the bottom bracket and the bottom fork are welded front and back, so that the strength of the bicycle body is well ensured.

Description

technical field [0001] The invention relates to the field of electric bicycles, in particular to an electric bicycle frame. Background technique [0002] Electric bicycles need to be equipped with cables for providing driving power and brake cables for braking. The cables and brake cables on traditional electric bicycles are exposed, which is very unsightly, and the twisting of the front of the bike will brake the brakes during driving. The cables and cables are squeezed, and there is a risk that the brake cables or cables will be cut after prolonged use. [0003] The head tube part of the traditional electric bicycle is only a single-layer steel pipe, but it is in a high-strength use state and needs to be worked at all times. The lack of structural strength will cause damage to the head tube, which directly affects riding safety. [0004] The five-way components on traditional bicycles are only connected through a single-layer structure, and the connection strength is poor...

AI Technical Summary

Problems solved by technology

[0002] Electric bicycles need to be equipped with cables for driving power and brake cables for braking. The cables and brake cables on traditional electric bicycles are exposed, which is very unsightly, and the twisting of the front during driving will cause the brakes The brake wires and cables will be squeezed, which will cause the risk of the brake wires or cables being cut after long-term use

[0003] The head tube of traditional electric bicycles is only a single-layer steel pipe, but here is a high-strength use state, and work needs to be done all the time. Insufficient structural strength will cause damage to the head tube, which will directly affect riding safety.

[0004] The bottom bracket assembly on a traditional bicycle is only connected through a single-layer structure, the connection strength is poor, the reliability of the welding cannot be guaranteed during welding, and the strength of the body cannot be guaranteed

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