Cycle frame structure of pedal motorcycle

A frame structure and motorcycle technology, applied to motorcycles, bicycle frames, bicycles, etc., can solve the problems of high processing difficulty, small frame rigidity enhancement, and increased processing procedures, so as to reduce the difficulty of manufacturing process and enhance the strength And rigidity, the effect of satisfying rigidity and strength
CN101402384BInactive Publication Date: 2011-07-27CHONGQING LONCIN MOTOR
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING LONCIN MOTOR
Publication Date
2011-07-27
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a frame structure for a pedal motorcycle, which comprises a frame main girder, a lower right pipe and a lower left pipe which are symmetrically arranged, and a right pipe and a left pipe which are symmetrically arranged, wherein front ends of the right pipe and the left pipe are connected through a stamping part with a U-shaped cross section; the opening of the stamping part with the U-shaped cross section is downwards; the stamping part with the U-shaped cross section coats the right pipe and the left pipe into the stamping part and connects the right pipe and the left pipe into a whole; and a left reinforcement tube and a right reinforcement tube for connecting the left and the right are welded between the front end of the right pipe and the U-shaped bottom of the lower right pipe, and between the front end of the left pipe and the U-shaped bottom of the lower left pipe respectively. The frame structure for the pedal motorcycle reduces the difficulty and the cost of the manufacturing technology of a vehicle frame, has better strength, is more convenient to assemble, provides a larger space for assembling an engine, can meet the space demand for assemblingthe engine without performing secondary processing on the vehicle frame, and particularly further reinforces the rigidity and the strength of the frame by making the lower left pipe and the lower right pipe form a quadrangular frame structure through arrangement of the left reinforcement tube and the right reinforcement tube.
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Description

technical field

[0001] The invention relates to a motorcycle frame structure, in particular to a scooter frame structure with simple manufacturing process and good frame rigidity. Background technique

[0002] The motorcycle frame is the basic component of the motorcycle. All the parts must be installed on the frame to keep the parts in a relatively stable position. Impact load. Therefore, the motorcycle frame requires sufficient strength and rigidity, and at the same time strives for a small mass to reduce the weight of the vehicle. There are various types and structures of existing motorcycle frames. According to the materials produced, they can be divided into two types: steel pipe type and steel plate type. Made of steel pipe. The cradle frame is a kind of steel pipe frame. Its structure is relatively complicated, but its strength and rigidity are good, and it is suitable for motorcycles with high power.

[0003] In the prior art, the cradle type motorcycle frame (re...

Claims

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