Body frame for motorcycles

A technology for motorized two-wheeled vehicles and car bodies, applied to motor vehicles, bicycle racks, bicycles, etc., can solve problems such as difficult alignment positions, and achieve the effect of easy joint operation and simple joint structure

Active Publication Date: 2019-11-01
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned Patent Document 1, although the technical idea of ​​dividing the head pipe and the main frame and fixing them with bolts is disclosed, it is difficult to connect the head pipe and the main frame in the state where at least one of the head pipe and the main frame is assembled. frame joint
In addition, the joint surface between the left main frame half and the head pipe extends in the vertical direction of the vehicle, and it is difficult to align the positions when joining the left main frame and the head pipe.

Method used

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  • Body frame for motorcycles
  • Body frame for motorcycles
  • Body frame for motorcycles

Examples

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no. 1 approach

[0030] First, in figure 1 Among them, the body frame F of a small motorcycle has a head pipe 11 at its front end, a main frame 12 with a front end joined to the head pipe 11, a front fork 13 supporting a front wheel WF, and a bar-shaped steering handle. 14 is steerably supported on the head pipe 11.

[0031] The main frame 12 is formed integrally with a lower frame portion 12a inclined rearward and downward from the head pipe 11, and a bottom frame extending rearward substantially horizontally from the rear end of the lower frame portion 12a. 12b, and a rear frame portion 12c extending rearward and upward from the rear portion of the bottom frame portion 12b.

[0032] exist figure 2 Among them, a unit swing type power unit P is swingably connected to the rear end portion of the bottom frame portion 12b of the main frame 12 via a link 15, and the rear wheel WR is pivotally supported on the power unit P. rear. In addition, a rear buffer unit 16 is provided between the rear ...

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PUM

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Abstract

Provided is a body frame for a two-wheeled motor vehicle, the body frame comprising: a head pipe which supports steering handle bars in a steerable manner; and a main frame which integrally has a down frame section joined to the head pipe so as to extend rearward and downward from the head pipe and which is formed as a separate member from the head pipe. The down frame section (12a) is provided with a mounting surface (31) which extends left and right in the vehicle width direction, faces upward, and enables the head pipe (11) to be mounted and positioned thereon in a non-joined state. This configuration enables the head pipe and the main frame to be joined while parts are mounted in the head pipe and the main frame, and also enables the head pipe and the main frame to be positioned easily when joining the head pipe and the main frame, thereby facilitating the joining work.

Description

technical field [0001] The present invention relates to a vehicle body frame for a motorcycle, which has: a head tube which supports a steering handle in a steerable manner; and a main frame which integrally has a The lower frame portion to which the tube joins is formed as a separate component from the head pipe. Background technique [0002] In the manufacturing process of motorcycles, parts are usually assembled sequentially on the body frame with the head pipe, but in order to simplify the manufacturing process, it is desirable to establish a head pipe in a state where the head pipe and the main frame are separated and the parts are assembled separately. The manufacturing method of joining the tube and the main frame, in Patent Document 1, has disclosed a frame structure, which divides the main frame left and right, and forms the right main frame half body with the left main frame half body head pipe connection. [0003] The technical problem to be solved by the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62K19/24B62K11/02B62M7/02
CPCB62K11/02B62K19/24B62M7/02
Inventor 池田英喜南中道裕规
Owner HONDA MOTOR CO LTD
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