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Body frame for motorcycle

A technology for motorized two-wheeled vehicles and frames, which is applied in the directions of motor vehicles, bicycle frames, motorcycles, etc., to achieve the effects of suppressing stress concentration, continuous joints, and achieving light weight

Inactive Publication Date: 2011-01-26
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if the main frame part composed of pipes and the pivot support frame part composed of multiple plates are different in structure, these structures increase the frame structural parts. On this basis, due to the main frame part and the pivot There is no continuity between the support frame parts, so man-hours are consuming in their welding

Method used

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  • Body frame for motorcycle
  • Body frame for motorcycle
  • Body frame for motorcycle

Examples

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Embodiment 1

[0066] In FIG. 1, the frame F of the motorcycle M is composed of: a tubular main frame portion 2 inclined in a manner descending from the head pipe 1 toward the rear; A pivot support frame part 3 extending below; and a pair of left and right seat rail parts 4, 4. The upper end portion of the inclined portion 4s is constituted by a horizontal portion 4h extending horizontally. The head pipe 1 supports a steering column 6a of a front fork 6 supporting a front wheel 5f. A steering handle 7 is connected to the upper end of the steering column 6a. . A pivot shaft 9 is fixed to the pivot support frame portion 3, whereby the rear fork 8 pivotally supporting the rear wheel 5r is supported vertically. The engine E located between the front wheel 5f and the rear wheel 5r is installed on the main frame part 2 and the pivot support frame part 3, and its power is transmitted to the rear wheel 5r via the chain drive 11. A shock absorber 12 is interposed between the rear fork 8 and the sea...

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Abstract

A body frame (F) for a motorcycle, comprising a pipe-like main frame part (2) and a pivotally supporting frame part (3) extending downward from the rear end part of the main frame part (2). The left side half parts of the main frame part (2) and the pivotally supporting frame part (3) are formed of a semi-cylindrical left side frame half body (27L) formed of a series of plate members, and the right side half parts thereof are formed of a semi-cylindrical right side frame half body (27R) formed of a series of plate members. The opposed end parts of these left side frame half body (27L) and theright side frame half body (27R) are connected to each other to form a continuous hollow structure. In this case, each of the frame half bodies (27L, 27R) is formed by pressing a plate-like blank connected body. Thus, the number of components can be reduced, welding workability can be increased, and the yielding of materials can be increased.

Description

technical field [0001] The present invention relates to an improvement of a frame for a two-wheeled motor vehicle comprising a tubular main frame portion having a head pipe at a front end and extending downward from a rear end portion of the main frame portion And the pivot support frame part which supports the pivot for supporting a rear fork is comprised. Background technique [0002] Such a motorcycle frame is known as disclosed in Patent Document 1. [0003] Patent Document 1: Japanese Patent No. 3548173 [0004] In the two-wheeled motor vehicle frame disclosed in Patent Document 1, the main frame portion is formed of a pipe material, and a pair of left and right pivot support frames made of flat plates are joined by welding to the left and right side surfaces of the rear end portion of the main frame portion. department. In this way, if the main frame part composed of pipes and the pivot support frame part composed of multiple plates are different in structure, thes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62K19/08B62K19/20B62K11/08
CPCB62K11/08
Inventor 藤原清隆铃木和雄山冈直次武田谦三朝稻勉
Owner HONDA MOTOR CO LTD
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