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Front fork of two wheel vehicle

A technology of two-wheeled vehicles and oil cylinders, which is applied to bicycle accessories, axle suspension devices, liquid shock absorbers, etc., can solve problems such as troublesome operations, and achieve the effects of simplified operations, reduced friction, and good sealing

Inactive Publication Date: 2007-08-01
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Furthermore, in the past, the front fork of the central cylinder type, because the bottom casing is also filled with oil, the oil must also be sealed when assembling the cylinder, so the work is very troublesome.

Method used

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  • Front fork of two wheel vehicle
  • Front fork of two wheel vehicle
  • Front fork of two wheel vehicle

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Experimental program
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Embodiment Construction

[0035] Embodiments of the present invention shown in FIGS. 1 to 4 are explained below.

[0036] FIG. 1 is a cross-sectional view showing a state in which the front fork 1 of this embodiment is extended. Fig. 2 is a similar cross-sectional view showing a compressed state. Fig. 3 is an enlarged cross-sectional view of its main parts.

[0037] This front fork 1 is in the inside of the fitting structure of the fork tube 2 corresponding to the inner tube and the bottom sleeve tube 3 corresponding to the outer tube.

[0038] In the buffer cylinder 4 , a tubular piston rod 6 is inserted into a cylindrical bottomed cylinder 5 , and a piston 7 fitted to the upper end of the piston rod 6 is slidably fitted into the cylinder 5 .

[0039] The lower end of the oil cylinder 5 forms an enlarged diameter portion 5b through a stepped portion 5a, and an annular rod guide 8 is fitted in the stepped portion 5a, and the opening edge of the enlarged diameter portion 5b is bent inwardly, and the b...

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Abstract

To reduce a friction and also improve a seal property under a simple seal structure at one seal place by fixing the lower end of a piston rod on the bottom surface of an outer tube for inserting an inner tube to its inside slidably. The lower end of a piston rod 6 is screwed in the bottom center of a bottom case 3 by a bolt 18 screwed in from the outside, while matching to the hole 3a of the bottom center of the bottom case 3. When a front fork enters from an extending time a compression stroke, a fork pipe 2 is inserted together with the rod guide 8 and seal 9 of its lower into the bottom case 3 and elastic force is applied by the compression of a spring 17. The valve function of a piston 7 increases a flow resistance and generates a damping force at the extending time by the elastic restoration force of the spring 17 from this state. The front fork is operated like above and the shock of a wheel received from a road surface can be dumped. A sealed place is one and seal property is excellent.

Description

[0001] This divisional application is based on the divisional application of the Chinese patent application with the application number "96104333.4", the application date being January 25, 1996, and the invention title being "the front fork of a two-wheeled vehicle". technical field [0002] The present invention relates to the structure of the front fork of a motorcycle. Background technique [0003] A front fork that supports the front wheel of a motorcycle through a shaft is integrated with a shock absorber that absorbs the impact on the wheel from the road surface. An example of a common plug-in front fork is shown in FIG. 10 . [0004] The fork tube 01 corresponding to the inner tube can be freely slidably embedded in the bottom sleeve 02 corresponding to the outer tube, and the lower end is fixed on the bottom surface of the bottom sleeve 02 with bolts 05. The elongated oil cylinder 03 penetrates the piston embedded in the lower end of the fork tube 01 04, and inserted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62K25/08F16F9/16
Inventor 槙野博喜
Owner HONDA MOTOR CO LTD
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