JP2014118132A

JP2014118132A - Front fork friction reduction mechanism

Info

Publication number: JP2014118132A
Application number: JP2012288843A
Authority: JP
Inventors: Yusuke Mashita; 祐輔真下
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-12
Filing date: 2012-12-12
Publication date: 2014-06-30

Abstract

PROBLEM TO BE SOLVED: To reduce friction resistance of a front fork used for a motorcycle and the like.The friction resistance worsens road surface followability.SOLUTION: By reducing friction resistance by a thrust bearing fixed in a fork, road surface followability is improved. As means for solving, mechanisms of 1., and 1., 2., 3., are combined. 1. The thrust bearing is fixed on a center of the fork. 2. A bleeding is provided so as not to divide air volume in the fork. 3. A spring is fixed on the center of the fork in the same mechanism as the bearing.

Description

本発明は、自動二輪車等に用いられるフロントフォークについて、フォークの作動に伴って発生する摩擦を軽減し、路面追従性を向上させるための機構である。 The present invention relates to a front fork used in a motorcycle or the like, which is a mechanism for reducing friction generated with the operation of the fork and improving road surface followability.

調査不足のため、記載せず。 Not listed due to lack of investigation.

自動二輪車等に用いられるフロントフォークは常に上下動を繰り返しており、上下動に伴い発生する各部の摩擦抵抗が乗り心地や走破性に強く影響する。各部の摩擦のうち、フロントフォークスプリングがフォーク内周やスプリング座面に擦れることで発生する摩擦の軽減を課題とした。
本発明をフロントフォークに組み込むことで、摩擦を軽減し、乗り心地の改善を可能にする。Front forks used in motorcycles and the like constantly move up and down, and the frictional resistance of each part generated by the vertical movement strongly affects the ride comfort and running performance. Among the frictions of each part, an object was to reduce the friction generated when the front fork spring rubs against the inner periphery of the fork and the spring seat surface.
By incorporating the present invention into the front fork, friction can be reduced and ride quality can be improved.

摩擦を軽減するため、スプリングの捩れを逃がすスラストベアリングをフォーク内に設け、スプリングの捩れを逃がす。ねじれによってフォークスプリングが格納されるインナーチューブの内壁に擦れ摩擦が発生するが、この摩擦やスプリング座面が回転することによる摩擦を最小化させる。
本装置は、ベアリングをセンターに設置する（請求項１）だけでなく、フォークスプリングをセンターに設置すること（請求項２）もポイントとなる。また、この機構がフォーク内のエアボリュームを分断化しないよう、エアの通り道を設けること（請求項２）もポイントとなる。In order to reduce friction, a thrust bearing that releases the twist of the spring is provided in the fork to release the twist of the spring. Torsion causes rubbing friction on the inner wall of the inner tube in which the fork spring is housed, and this friction and friction due to rotation of the spring seat surface are minimized.
In this apparatus, not only the bearing is installed at the center (Claim 1) but also the fork spring is installed at the center (Claim 2). It is also important to provide an air passage so that this mechanism does not divide the air volume in the fork (Claim 2).

乗り心地の向上、接地感の向上。実際に本装置を組み込み走行したところ、道路のゼブラゾーンを越える際の接地感が向上した。 Improved riding comfort and improved ground contact. When this device was actually installed and run, the feeling of ground contact when crossing the zebra zone on the road was improved.

図３及び図４を参照のこと。 See FIGS. 3 and 4.

オートバイのフロントフォークに組み込む。 Install in the front fork of a motorcycle.

オートバイ、スクーター等、フロントフォーク機構を持つ車両における走行安定性向上。 Improved running stability in vehicles with front fork mechanisms such as motorcycles and scooters.

フォークを縦断面で見た模式図。ベアリングホルダはフォークパイプの内側中心にあるダンパーロッドの外径にあわせた内径を持ち、スラストベアリング内周部でベアリングを固定する。 The schematic diagram which looked at the fork in the longitudinal section. The bearing holder has an inner diameter that matches the outer diameter of the damper rod at the inner center of the fork pipe, and fixes the bearing at the inner periphery of the thrust bearing. フォークを縦断面で見た模式図。ベアリングホルダはフォークパイプの内径にあわせた外径を持ち、スラストベアリング内周部でベアリングを固定する。 The schematic diagram which looked at the fork in the longitudinal section. The bearing holder has an outer diameter that matches the inner diameter of the fork pipe, and fixes the bearing at the inner periphery of the thrust bearing. フォークを縦断面で見た模式図。図１に加え、フォークスプリングを保持するホルダを設ける。フォークスプリング内のエアボリュームを分断しないよう、ホルダに穴を開ける、ないしフォーク内径よりホルダを細くし、エアの通路を設ける。 The schematic diagram which looked at the fork in the longitudinal section. In addition to FIG. 1, a holder for holding the fork spring is provided. A hole is made in the holder so that the air volume in the fork spring is not divided, or the holder is made thinner than the inner diameter of the fork to provide an air passage. フォークを縦断面で見た模式図。図１に加え、フォークスプリングを保持するホルダを設ける。フォークスプリング内のエアボリュームを分断しないよう、ホルダに穴を開ける、ないしフォーク内径よりホルダを細くし、エアの通路を設ける。 The schematic diagram which looked at the fork in the longitudinal section. In addition to FIG. 1, a holder for holding the fork spring is provided. A hole is made in the holder so that the air volume in the fork spring is not divided, or the holder is made thinner than the inner diameter of the fork to provide an air passage.

Claims

In order to reduce the frictional resistance caused by the vertical movement of the front fork of a motorcycle, a structure that installs a thrust bearing that releases the torsion of the spring accompanying the vertical movement of the front fork. The bearing is held at the center of the fork, and the fulcrum that holds the center is a damper rod in the front fork of the motorcycle or the inner periphery of the fork pipe. (See FIG. 1 and FIG. 2) This claim does not apply when the bearing without the holding mechanism is simply inserted below the fork cap or above and below the fork spring.

In addition to claim 1, a structure for fixing the center of the bearing and the center of the front fork spring in order to minimize contact between the inner periphery of the fork spring and the fork pipe. In this structure, an air vent gap is provided so that the air volume in the front fork is not divided. (See Fig. 3 and Fig. 4 for the mechanism)