JP4597734B2 - 自動二輪車のフロントフォーク - Google Patents
自動二輪車のフロントフォーク Download PDFInfo
- Publication number
- JP4597734B2 JP4597734B2 JP2005089939A JP2005089939A JP4597734B2 JP 4597734 B2 JP4597734 B2 JP 4597734B2 JP 2005089939 A JP2005089939 A JP 2005089939A JP 2005089939 A JP2005089939 A JP 2005089939A JP 4597734 B2 JP4597734 B2 JP 4597734B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- oil
- side tube
- auxiliary
- front fork
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/064—Units characterised by the location or shape of the expansion chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
- B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
- B60G15/061—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper with a coil spring being mounted inside the damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
- B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
- B62K25/08—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/154—Fluid spring with an accumulator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/12—Cycles; Motorcycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/10—Damping action or damper
- B60G2500/11—Damping valves
Description
(1)油溜室と補助油室との連通路にオリフィスを設けるものであるから、ブレーキ作動されていない、フロントフォークの通常圧縮時にも、このオリフィスが減衰力を発生してしまい、クッション性を損なう。
(a)ブレーキ作動されていない、フロントフォークの通常圧縮時には、気体室が圧縮され、油溜室の作動油が通路抵抗を生じない連通路を通って補助油室にスムーズに流れ、補助気体室を収縮させる。ここで、フロントフォーク全体の圧縮荷重は、気体室及び補助気体室の圧縮反力と、懸架スプリングの圧縮反力との合成荷重になり、気体室及び補助気体室の圧縮反力はそれらの全気体室が大容積をなす分だけ低目になり、クッション性を確保する。
(e)ダンパシリンダの下端側の外周に設けられるボトムシリンダの内部に、ダンパシリンダの内部の油室と連通する体積補償室を設け、ボトムシリンダの内面を摺動するフリーピストンにより体積補償室を油溜室に対して区画する。従って、ダンパシリンダの内部の油室への空気の巻き込みを回避し、フロントフォークの伸縮の応答性を向上する。
11 車体側チューブ
12 車輪側チューブ
18 ダンパシリンダ
21 ピストンロッド
25 ピストン
41 ボトムシリンダ
42 フリーピストン
72 補助タンク
73 隔壁部材
75 連通路
76 開閉弁
78 バイパス通路
79 ブロー弁
A1、A2、A3 油室
A4 体積補償室
B1 油溜室
B2 補助油室
C1 気体室
C2 補助気体室
Claims (2)
- 車体側チューブと車輪側チューブを摺動自在に挿入し、
車体側チューブと車輪側チューブの内部に、油溜室と、該油溜室の上部の気体室を設けた自動二輪車のフロントフォークにおいて、
車輪側チューブの下部に補助タンクを連結し、補助タンクの内部に補助油室と、該補助油室と隔壁部材で区画される補助気体室を設け、
前記油溜室と補助油室を連通するとともに、通路抵抗を生じない連通路を設け、ブレーキ作動に連動して該連通路を閉じる開閉弁を設け、
前記連通路をバイパスし、前記油溜室と補助油室を連通するバイパス通路を設け、前記開閉弁が閉じた状態で、前記気体室が所定の圧力に達したときに該バイパス通路を開くブロー弁を設けたことを特徴とする自動二輪車のフロントフォーク。 - 前記車輪側チューブにダンパシリンダを取付け、該ダンパシリンダ内を摺動するピストンを設けたピストンロッドを前記車体側チューブに取付け、
該ダンパシリンダの下端側の外周に設けられるボトムシリンダを車輪側チューブに取付け、該ボトムシリンダの内部に、該ダンパシリンダの内部の油室と連通する体積補償室を設け、ボトムシリンダの内面を摺動するフリーピストンにより体積補償室を前記油溜室に対して区画する請求項1に記載の自動二輪車のフロントフォーク。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005089939A JP4597734B2 (ja) | 2005-03-25 | 2005-03-25 | 自動二輪車のフロントフォーク |
EP20050020473 EP1705396B1 (en) | 2005-03-25 | 2005-09-20 | Front fork of motorcycle |
DE200560005947 DE602005005947T2 (de) | 2005-03-25 | 2005-09-20 | Motorradvorderradgabel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005089939A JP4597734B2 (ja) | 2005-03-25 | 2005-03-25 | 自動二輪車のフロントフォーク |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006264651A JP2006264651A (ja) | 2006-10-05 |
JP4597734B2 true JP4597734B2 (ja) | 2010-12-15 |
Family
ID=35044609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005089939A Expired - Fee Related JP4597734B2 (ja) | 2005-03-25 | 2005-03-25 | 自動二輪車のフロントフォーク |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1705396B1 (ja) |
JP (1) | JP4597734B2 (ja) |
DE (1) | DE602005005947T2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009202783A (ja) * | 2008-02-28 | 2009-09-10 | Showa Corp | 二輪車用後部油圧緩衝器 |
IT1398039B1 (it) * | 2009-02-12 | 2013-02-07 | Zannini | Dispositivo di sospensione regolabile per veicoli. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6159410B2 (ja) * | 1979-06-29 | 1986-12-16 | Kayaba Industry Co Ltd | |
JPH0449238U (ja) * | 1990-09-03 | 1992-04-27 | ||
JPH07133838A (ja) * | 1993-11-10 | 1995-05-23 | Showa:Kk | 二輪車等のフロントフォーク |
JPH08233014A (ja) * | 1995-02-23 | 1996-09-10 | Kayaba Ind Co Ltd | フロントフォーク |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54138249A (en) * | 1978-04-17 | 1979-10-26 | Kayaba Industry Co Ltd | Shock absorber for twoowheel barrow |
JPS6159410A (ja) | 1984-08-31 | 1986-03-26 | Sumitomo Electric Ind Ltd | 内視鏡 |
JP4143782B2 (ja) * | 1999-03-31 | 2008-09-03 | 株式会社日立製作所 | エアサスペンション装置 |
US20020121416A1 (en) * | 2001-02-19 | 2002-09-05 | Yohei Katayama | Hydraulic cylinder apparatus |
DE10153011B4 (de) * | 2001-10-26 | 2006-03-09 | Zf Sachs Race Engineering Gmbh | Schwingungsdämpfer mit einstellbarer Dämpfungskraft |
CN1656325A (zh) * | 2002-05-29 | 2005-08-17 | 进取悬浮公司 | 具有压力调节控制阀和远程压力调整的液压阻尼器 |
EP1597493A2 (en) * | 2003-02-28 | 2005-11-23 | Robert B. Fox | Inertia valve shock absorber |
-
2005
- 2005-03-25 JP JP2005089939A patent/JP4597734B2/ja not_active Expired - Fee Related
- 2005-09-20 DE DE200560005947 patent/DE602005005947T2/de active Active
- 2005-09-20 EP EP20050020473 patent/EP1705396B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6159410B2 (ja) * | 1979-06-29 | 1986-12-16 | Kayaba Industry Co Ltd | |
JPH0449238U (ja) * | 1990-09-03 | 1992-04-27 | ||
JPH07133838A (ja) * | 1993-11-10 | 1995-05-23 | Showa:Kk | 二輪車等のフロントフォーク |
JPH08233014A (ja) * | 1995-02-23 | 1996-09-10 | Kayaba Ind Co Ltd | フロントフォーク |
Also Published As
Publication number | Publication date |
---|---|
EP1705396B1 (en) | 2008-04-09 |
EP1705396A1 (en) | 2006-09-27 |
JP2006264651A (ja) | 2006-10-05 |
DE602005005947D1 (de) | 2008-05-21 |
DE602005005947T2 (de) | 2009-05-20 |
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