Seat rail structure of motorcycle

A technology for motorized two-wheeled vehicles and seats, applied to motor vehicles, bicycle saddles, bicycles, etc., can solve the problems of assembly man-hours, difficulty in manufacturing corrosion-resistant frames, and difficulty in further improving productivity, etc., to achieve increased productivity , the effect of increasing the section coefficient

Inactive Publication Date: 2008-09-03
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the structure fastened with fastening parts, assembly man-hours are required, so it is difficult to further improve productivity
[0006] Furthermore, in the case of using a magnesium alloy for a vehicle frame, it is difficult to manufacture a vehicle frame that is strong in corrosion resistance while maintaining sufficient strength and rigidity

Method used

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  • Seat rail structure of motorcycle
  • Seat rail structure of motorcycle
  • Seat rail structure of motorcycle

Examples

Experimental program
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Embodiment Construction

[0096] Next, a seat rail structure of a motorcycle according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a left side view showing a motorcycle 10 according to an embodiment of the present invention. The directions used in the following description are based on FIG. 1 . The vertical direction of the vehicle body is the vertical direction in FIG. 1 , the lateral direction of the vehicle body is the direction toward the depth of the drawing in FIG.

[0097] The motorcycle 10 is provided with a double beam frame 20 extending in the front-rear direction, and a head pipe 21 is provided on the front side of the frame 20 . A front fork 31 extending downward is attached to the head pipe 21 , and a handle 33 is connected to the upper side. Furthermore, a front wheel 32 is attached to the lower side of the front fork 31 . A seat rail 40 further extending from the rear end portion toward the rear of the vehicle body is attached t...

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Abstract

The present invention provides a seat rail structure for a motorcycle in which sufficient strength and rigidity are secured while achieving weight reduction of a vehicle body. Means for Resolution A seat rail structure of a motorcycle includes a main frame and a seat rail (40) formed of magnesium alloy to be secured to the main frame, and the seat rail (40) includes a pair of left and right side wall portions (100L,100R) extending rearward from the main frame, and a plurality of connecting portions (210,220,230,240) formed into a substantially angular C-shape in cross section or into a substantially H-shape in cross section for connecting the left and right side wall portions (100L,100R), wherein at least part of the connecting portions (210,220,230,240) are connected at a level flush with or above the upper surface of the side wall portions (100L,100R), and the side wall portions (100L,100R) and the connecting portions (210,220,230,240) are integrally formed by die casting.

Description

technical field [0001] The present invention relates to a seat rail structure of a motorcycle for supporting a seat on which an occupant sits. Background technique [0002] In the prior art, iron-based materials are used for the frame of a motorcycle for the sake of workability and cost. However, in recent years, in order to reduce the weight of the vehicle body, light metals such as aluminum and magnesium have begun to be used as raw materials for vehicle frames. For this reason, a seat rail for supporting a seat is also employing a member cast from aluminum (for example, refer to Patent Document 1). [0003] In addition, the seat rail disclosed in Patent Document 1 has a structure in which the left and right frames are divided, and the left and right frames are fastened by fastening members with a cross member or the like interposed therebetween. [0004] Patent Document 1 Japanese Patent Application Laid-Open No. 2004-98875 [0005] The conventional structure is prefer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62J1/12
CPCB62K11/04B62K19/12B62K19/30
Inventor 甲田敏博上田顺一望月信介川崎洋平
Owner HONDA MOTOR CO LTD
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