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Vehicle body frame of motorcycle

一种车身框架、摩托车的技术，应用在摩托车、机动车、自行车等方向，能够解决尺寸大、阻碍车身框架重量减小、增加成本等问题，达到减少部件数量、实现成本和重量、低成本的效果

Inactive Publication Date: 2008-09-10
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to provide rigidity to the engine mounting bracket, the engine mounting bracket becomes larger in size thereby increasing the cost
In addition, this is also the reason that hinders the weight reduction of the body frame

Method used

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  • Vehicle body frame of motorcycle
  • Vehicle body frame of motorcycle
  • Vehicle body frame of motorcycle

Examples

Experimental program
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Embodiment Construction

[0022] Hereinafter, the body frame of the motorcycle of the present invention will be explained in conjunction with the explanatory drawings. Figure 1 is a side view of the motorcycle, figure 2 Is a perspective view of the body frame, Figure 3 is a side view of the body frame, Figure 4 Is a rear view of a part of the body frame, Figure 5 Is a cross-sectional view taken along the line V-V in Figure 3, Figure 6 Is a cross-sectional view taken along the line VI-VI in Figure 3, Figure 7 It is a cross-sectional view taken along the line VII-VII in FIG. 3.

[0023] The motorcycle 1 implementing this mode of the present invention includes a body frame 2. The front fork 4 is rotatably installed on the steering head tube 3 provided to the front end of the body frame 2, the front wheel 5 is installed on the lower part of the front fork 4, and the steering handle 6 is installed on the steering shaft 50 provided on the upper part of the front fork 4 .

[0024] A pair of main frames 7 dive...

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PUM

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Abstract

A vehicle body frame of a motor vehicle has a left and right pair of main frames and a left and right pair of rear arm brackets. The left and right pair of main frames branches away from a steering head pipe to the left and right of the vehicle and extends toward the rear, below the vehicle. The left and right pair of rear arm brackets each extends with bend from the rear end of the corresponding main frame toward below the vehicle. The steering head pipe is divided into the left and right, and the vehicle body frame is integrally formed as a pair of left-right divided frames where the left-right divided steering head pipe, the left and right pair of main frames, and the left and right pair of rear frame brackets are divided into the left and right. The left and right portions of the steering head pipe are fastened together to pivotally support a steering shaft. Engine installation boss portions are integrally formed with the pair of main frames of the pair of left-right divided frames. The boss portions are arranged in an inwardly extending manner within the width of the main frames of the left-right divided frames, and an engine is mounted on the boss portions. With the structure above, engine mounting is possible with the reduced number of components, so that costs and weight can be reduced. Further, since the boss portions are formed within the width of the main frames, the main frames and the boss portions have rigidity. Therefore, the boss portions are not particularly necessary to be large in size for rigidity, an engine can be mounted on the vehicle body frame at low costs, and the vehicle body frame can be reduced in weight.

Description

Technical field [0001] The invention relates to a body frame of a motorcycle, which can suspend an engine while reducing the number of parts. Background technique [0002] In recent years, with regard to racing motorcycles that require high rigidity in the body frame or motorcycles that replicate the design of such racing motorcycles, a motorcycle body frame has been proposed, which includes a steering head tube to the left. A pair of main frames that diverge from the side and right side and extend backward and downward, and a pair of left and right rear arm brackets extending downward from the rear ends of the respective main frames, where the steering head tube is divided into left and right split steering head tubes, The left and right split steering head pipe, the left and right main frame pairs, and the left and right rear arm bracket pairs are integrally formed in a left and right split state, thereby forming a pair of left and right split frames (for example, Patent Docume...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62K11/04B62M7/02
CPCB62K11/04
Inventor 川濑正雄
Owner YAMAHA MOTOR CO LTD
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