CN216519148U

CN216519148U - Motorcycle engine crankshaft

Info

Publication number: CN216519148U
Application number: CN202122486044.8U
Authority: CN
Inventors: 胡仁学; 徐国刚; 盛先坤
Original assignee: Jiangmen Tianyi Metal Industry Co ltd
Current assignee: Jiangmen Tianyi Metal Industry Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-13
Anticipated expiration: 2031-10-15

Abstract

The utility model relates to a motorcycle engine crankshaft, which comprises a left crank, a timing tooth, a cam and a left box, wherein the timing tooth is arranged on the left crank, the cam is arranged on the left box, and the timing tooth is meshed with a cam gear. The installation position of the left crank timing gear of the motorcycle engine crankshaft moves outwards, so that the timing gear and the cam are in the same plane, and after the gear surfaces are meshed, the noise of the cam is reduced, the use requirements of consumers can be met, and the product satisfaction of the consumers is improved.

Description

Motorcycle engine crankshaft

Technical Field

The utility model belongs to the technical field of motorcycle engine parts, and particularly relates to a motorcycle engine crankshaft.

Background

With the increase of the economic level, the use requirements of the motorcycle by consumers are higher and higher. After the cam of the existing CG motorcycle engine is matched with the timing gear, the double gears are not in the same plane when working. The gear tooth portion has little burr or little deformation after the rounding, and when the double tooth meshing, can produce the abnormal sound, influence the consumer to the experience of engine sound, can't satisfy consumer's operation requirement.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the motorcycle starting crankshaft which is simple in structure and can meet the use requirements of consumers.

Technical scheme

The purpose of the utility model is realized as follows: the utility model provides a motorcycle engine crankshaft, includes left crank, timing tooth, cam, left case, and the timing tooth is installed on left crank, and the cam is installed on left case, and the timing tooth meshes with cam gear, characterized by: the distance between the mounting surface of the left crank timing tooth and the end surface of the left crank is 30.8-31.0mm, and the distance between the upper end surface of the left crank timing tooth and the end surface of the left crank is 45.0-45.7 mm.

Has the advantages that:

due to the adoption of the technical scheme of the utility model: the installation position of the left crank timing gear of the motorcycle engine crankshaft moves outwards, so that the timing gear and the cam are in the same plane, and after the gear surfaces are meshed, the noise of the cam is reduced, the use requirements of consumers can be met, and the product satisfaction of the consumers is improved.

Drawings

The utility model is further illustrated by the following examples in conjunction with the drawings.

FIG. 1 is a schematic view of a crankshaft mounting structure of a motorcycle engine according to an embodiment of the present invention.

FIG. 2 is a front view of a crankshaft of a motorcycle engine according to an embodiment of the present invention.

Detailed Description

The specific structure of the embodiment of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the crankshaft of the motorcycle engine comprises a left crank (1), a timing tooth (2), a cam (3) and a left box (4), wherein the timing tooth (2) is installed on the left crank (1), the cam (3) is installed on the left box (4), the timing tooth (2) is in gear engagement with the cam (3), the distance between a timing tooth installation surface (5) of the left crank (1) and a left crank end surface (6) is 30.8-31.0mm, and the distance between a left crank timing tooth upper end surface (7) and the left crank end surface is 45.0-45.7 mm.

The installation position of the timing tooth (2) of the left crank (1) of the motorcycle engine crankshaft moves outwards, so that the timing tooth (2) and the cam (3) are in the same plane, and after the tooth surfaces are meshed, the noise of the cam is reduced, the use requirements of consumers can be met, and the product satisfaction of the consumers is improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification and equivalent changes and modifications of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a motorcycle engine crankshaft, includes left crank, timing tooth, cam, left case, and the timing tooth is installed on left crank, and the cam is installed on left case, and the timing tooth meshes with cam gear, characterized by: the distance between the mounting surface of the left crank timing tooth and the end surface of the left crank is 30.8-31.0mm, and the distance between the upper end surface of the left crank timing tooth and the end surface of the left crank is 45.0-45.7 mm.