Frame of motorcycle

Abstract

The invention relates to a frame of a motorcycle, which comprises a vertical pipe, a big left plate, a big right plate, a big left plate body, a big right plate body, an upper left pipe, an upper right pipe, a left stay pipe, a right stay pipe, and an inclined support pipe of an engine, wherein the front ends of the big left plate and the big right plate are connected with the vertical pipe, and the back ends are respectively and correspondingly connected to the middle parts of the big left plate body and the big right plate body; the upper left pipe and the upper right pipe are connected with the left stay pipe and the right stay pipe at the back ends, and the front ends of the upper left pipe and the upper right pipe as well as the left stay pipe and the right stay pipe are connected with the upper parts of the big left plate body and the big right plate body; the outside surfaces of the big left plate, the big right plate as well as the big left plate body and the right plate body are provided with ribs longitudinally extending along the big left plate and the big right plate, and the surfaces outside the ribs are in smooth transition at the rib positions; the upper parts of the big left plate body and the big right plate body are inwards bent in an arc. Compared with a frame of the similar racing-car type ride-motorcycle, the invention has the advantages of high strength, good riding comfort, convenience and labour saving of engine assembly. The frame of a motorcycle is coordinate with the streamline style of the whole motorcycle, which is good for enhancing the appearance of the whole motorcycle.

Description

technical field [0001] The invention belongs to the technical field of motorcycle structures, and in particular relates to a motorcycle frame structure. Background technique [0002] At present, for some sports car riding motorcycles, in order to reflect the overall rough shape of the sports car, reduce the body covering parts and increase the strength of the vehicle, the main beam of the frame is replaced by two flat tube-shaped large plates on the left and right, and the left and right middle tubes It is also made into a flat tube-shaped plate structure. After the whole vehicle is assembled, most of these two parts are exposed on both sides of the car and are not covered by the plastic cover. Therefore, the shape of these two parts not only affects the whole The strength of the car will be affected, and it will also affect the appearance of the whole car. [0003] The vehicle frame of existing this type sports car type ride-on type motorcycle, its left and right large boa...

AI Technical Summary

Problems solved by technology

[0002] At present, for some sports car riding motorcycles, in order to reflect the overall rough shape of the sports car, reduce the body covering parts and increase the strength of the vehicle, the main beam of the frame is replaced by two flat tube-shaped large plates on the left and right, and the left and right middle tubes It is also made into a flat tube-shaped plate structure. After the whole vehicle is assembled, most of these two parts are exposed on both sides of the car and are not covered by the plastic cover. Therefore, the shape of these two parts not only affects the whole It will not only affect the strength of the car, but also affect the appearance of the whole car

[0003] The vehicle frame of existing this type sports car type ride-on type motorcycle, its left and right large boards (equivalent to the main beam on the ordinary riding type motorcycle frame) and the left and right large plate bodies (equivalent to the main beam on the ordinary riding type motorcycle frame) The left and right middle pipes) have a rectangular cross-section, and the strength is not high enough. The outer surface is a monotonous plane shape, which does not match the streamlined shape of the vehicle.

The distance between the upper ends of the left and right large panels is relatively large. After the seat cushion is assembled, the lateral width of the seat cushion is large, and the driver feels uncomfortable when riding.

[0004] In addition, on the frame of the existing sports car type riding motorcycle, the upper end of the engine suspension is connected to the engine slanting tube, and the engine slanting tube is a tubular part whose upper end is obliquely connected to the standpipe. The lower end is relatively lower, which makes the engine assembly space narrow. When assembling the engine, the engine can only be installed from one side according to a certain azimuth angle, which is very laborious; because the engine diagonal support tube is in the middle of the left and right directions, the exhaust pipe drawn from the engine The trachea also happens to pass through this position, so in actual assembly, dimples have to be made on the corresponding parts of the engine slant pipe and the exhaust pipe to give way to each other, but this will reduce their strength and even affect the engine row. Normal ventilatory function of the trachea

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