JPH0225804B2 - - Google Patents
Info
- Publication number
- JPH0225804B2 JPH0225804B2 JP57175180A JP17518082A JPH0225804B2 JP H0225804 B2 JPH0225804 B2 JP H0225804B2 JP 57175180 A JP57175180 A JP 57175180A JP 17518082 A JP17518082 A JP 17518082A JP H0225804 B2 JPH0225804 B2 JP H0225804B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- oil
- reserve tank
- piston
- shock absorber
- 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 - Lifetime
Links
- 239000006096 absorbing agent Substances 0.000 claims description 19
- 230000035939 shock Effects 0.000 claims description 19
- 239000000725 suspension Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 37
- 239000007789 gas Substances 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】
この発明は、車両の懸架用油圧緩衝装置にする
ものである。この種の油圧緩衝装置は油を満たし
たシリンダと、このシリンダ内を摺動するピスト
ンとを具備し、このピストンに設けられたオリフ
イスを流通する油の流動抵抗により減衰力を生じ
させるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hydraulic shock absorber for suspension of a vehicle. This type of hydraulic shock absorber includes a cylinder filled with oil and a piston that slides inside the cylinder, and generates a damping force by the flow resistance of the oil flowing through an orifice provided in the piston. .
ところで、従来の自動二輪車における後輪用油
圧緩衝装置にあつては、比較的重量の重いシリン
ダ側を車体側に取りつけるとともに比較的重量の
軽いピストン側をリアアーム側（車輪側）に取り
つけ（所謂、倒立式）、リアアームを揺動しやす
くして、車輪の路面への追随性を確保している。 By the way, in the conventional hydraulic shock absorber for the rear wheel of a motorcycle, the relatively heavy cylinder side is attached to the vehicle body side, and the relatively light piston side is attached to the rear arm side (wheel side) (so-called, (inverted type), the rear arm can be easily swung to ensure the wheels follow the road surface.
又、油圧緩衝器はリザーブタンクを備え、この
リザーブタンクと前記シリンダとの間において作
動油を往復動させることにより、ピストン杆のシ
リンダへの出入によるシリンダ内に容積変化を調
整している。従来における油圧緩衝器にあつて
は、かかるリザーブタンクの部品点数を少なくす
るとともに油圧緩衝器の維持管理を容易にするた
め、タンク内に作動油とガスとを充填して２相構
成とするとともに作動油の油面を自由面としたも
のを採用している。 Further, the hydraulic shock absorber includes a reserve tank, and by reciprocating hydraulic oil between the reserve tank and the cylinder, changes in volume within the cylinder due to movement of the piston rod into and out of the cylinder are adjusted. In conventional hydraulic shock absorbers, in order to reduce the number of parts in the reserve tank and to facilitate the maintenance and management of the hydraulic shock absorber, the tank is filled with hydraulic oil and gas to create a two-phase configuration. The oil level of the hydraulic oil is used as a free surface.
発明者は、前記倒立式の利点と前記リザーブタ
ンク（油面を自由面とした）の利点とを利用した
後輪用油圧緩衝装置を案出しようした。 The inventor attempted to devise a rear wheel hydraulic shock absorber that utilizes the advantages of the above-mentioned inverted type and the advantages of the reserve tank (with the oil surface as a free surface).
しかしながら、前記シリンダと前記リザーブタ
ンクとをホース等の連通管でつなぐ場合、このシ
リンダがエアーを吸わないようにする必要上、連
通管のリザーブタンク端は常にリザーブタンクの
下部に設置しなければならず、このため、リザー
ブタンクの形状等を考慮した場合、余裕空間の少
ない自動二輪車においてはリザーブタンクを設置
する場所が極めて制限される結果、設置しにくい
という不都合を有した。又、このような構成にす
ると連通ホースが長くなる結果、後輪の近傍に位
置する後輪用油圧緩衝装置にあつては、車輪の巻
き込んだ石等が連通ホースに当たり、このホース
が破損しやすいという不都合を有した。。 However, when connecting the cylinder and the reserve tank with a communication pipe such as a hose, the reserve tank end of the communication pipe must always be installed at the bottom of the reserve tank in order to prevent this cylinder from sucking air. For this reason, when considering the shape of the reserve tank, etc., in a motorcycle with little free space, the place where the reserve tank can be installed is extremely limited, resulting in the inconvenience that it is difficult to install the reserve tank. In addition, with this configuration, the connecting hose becomes longer, and in the case of a rear wheel hydraulic shock absorber located near the rear wheel, stones, etc. caught in the wheels can easily hit the connecting hose, causing damage to the hose. This was an inconvenience. .
この発明はこれらの不都合を解消するためにな
されたものであり、その要旨は、
油を満たしたシリンダと
このシリンダ内を進退するピストンと、
このピストンを一端に備え他端を前記シリンダ
外に突出したピストンロツドと、
前記シリンダに並列状態で固定されたリザーブ
タンクとを備え、
前記シリンダを車体側に取り付けるとともに前
記ピストンロツドをリアアーム側に取り付け、
且つ、前記リザーブタンクに油とガスとを充填
して２相構成とするとともにこの油部と前記シリ
ンダの上端部とを連通路によつて連通し、この連
通路を介して前記油をリザーブタンクに導くよう
にしてなる自動二輪車における後輪懸架用油圧緩
衝装置において、
前記連通路を前記リザーブタンクの内部に設置
したことを特徴とする自動二輪車における後輪懸
架用油圧緩衝装置である。 This invention was made to eliminate these inconveniences, and its gist is: a cylinder filled with oil, a piston that moves back and forth within the cylinder, and one end of which is provided with the piston and the other end of which protrudes outside the cylinder. and a reserve tank fixed in parallel to the cylinder, the cylinder is attached to the vehicle body side, the piston rod is attached to the rear arm side, and the reserve tank is filled with oil and gas. A hydraulic shock absorber for rear wheel suspension in a motorcycle, which has a phase configuration and communicates the oil part with the upper end of the cylinder through a communication passage, and guides the oil to a reserve tank via the communication passage. The hydraulic shock absorber for rear wheel suspension in a motorcycle is characterized in that the communication passage is installed inside the reserve tank.
次に、この発明の自動２輪車の後輪懸架用油圧
緩衝装置における実施例を図面により説明する。
１は自動２輪車、２は車体、３はリヤアームで、
リヤアーム３はその後端に車軸を介して後輪４が
支持され、ピポツト軸５において車体２に上下方
向に揺動可能に枢支されている。６は油圧緩衝装
置でシリンダ部１０とピストン２０とピストンロ
ツド２２とリザーブタンク３０とからなる。シリ
ンダ部１０の上端の取付部１１は車体２に、ピス
トンロツド２２の下端の取付部２１は、リヤアー
ム３にそれぞれ取付けられて緩衝機能を行なう。 Next, an embodiment of a hydraulic shock absorber for rear wheel suspension of a motorcycle according to the present invention will be described with reference to the drawings.
1 is the motorcycle, 2 is the vehicle body, 3 is the rear arm,
A rear wheel 4 is supported at the rear end of the rear arm 3 via an axle, and the rear arm 3 is pivoted to the vehicle body 2 at a pivot shaft 5 so as to be swingable in the vertical direction. Reference numeral 6 denotes a hydraulic shock absorber comprising a cylinder section 10, a piston 20, a piston rod 22, and a reserve tank 30. An attachment portion 11 at the upper end of the cylinder portion 10 is attached to the vehicle body 2, and an attachment portion 21 at the lower end of the piston rod 22 is attached to the rear arm 3 to perform a buffering function.
シリンダ部１０を説明すると、１２は外筒、１
３は内筒である。内筒１３は本発明でいうシリン
ダに該当し、円筒形鋼管より成る。その上下端は
それぞれ絞り部材１４とオイルシールホルダ１５
により外筒１２に保持され、外筒１２との間に還
状室１６が形成されている。内筒１３の内側には
油が満たされ、オリフイス（図示せず）を具備し
たピストン２０が軸方向に摺動自在に設けられて
いる。 To explain the cylinder part 10, 12 is an outer cylinder, 1
3 is an inner cylinder. The inner cylinder 13 corresponds to a cylinder in the present invention, and is made of a cylindrical steel pipe. Its upper and lower ends are a throttle member 14 and an oil seal holder 15, respectively.
is held by the outer cylinder 12, and a circular chamber 16 is formed between the outer cylinder 12 and the outer cylinder 12. The inside of the inner cylinder 13 is filled with oil, and a piston 20 equipped with an orifice (not shown) is provided to be slidable in the axial direction.
今、リヤアーム３が上方に揺動すると、ピスト
ンロツド２２は内筒１３内に侵入してピストン２
０を上動させるが、そのさいピストン２０のオリ
フイスにより減衰力を生じる。このときピストン
ロツド２２の内筒１３内へ侵入した体積相当分の
油は、絞り部材１４の絞りおよび連通口３２を経
てリザーブタンク３０に至る。リザーブタンク３
０はシリンダ部１０との間以外は密閉形成されて
いてその下半部には油が貯えられ、油面０の上方
には高圧チツ素ガスが貯えられた２相構成となつ
ている。油の連通路は連通口３２と、これに接続
された金属管製連通管３３からなる。この連通路
のリザーブタンク３０内の開口３５は油面０の下
方に位置している。そのため、ピストンロツド２
２の内筒１３内への侵入に伴なつて排出される油
はリザーブタンク３０の油中に確実に案内され、
ガスが混入されることはない。この実施例では油
の連通路を前記のごとく構成したが、リザーブタ
ンク３０の壁内を垂下貫通させて油面下に開口さ
せるように構成してもよい。 Now, when the rear arm 3 swings upward, the piston rod 22 enters the inner cylinder 13 and the piston 2
0 is moved upward, and at this time a damping force is generated by the orifice of the piston 20. At this time, the oil corresponding to the volume that has entered the inner cylinder 13 of the piston rod 22 reaches the reserve tank 30 through the throttle of the throttle member 14 and the communication port 32. Reserve tank 3
0 is hermetically sealed except for between it and the cylinder part 10, and has a two-phase structure in which oil is stored in the lower half and high-pressure nitrogen gas is stored above the oil level 0. The oil communication path consists of a communication port 32 and a metal communication pipe 33 connected to the communication port 32. The opening 35 in the reserve tank 30 of this communication path is located below the oil level 0. Therefore, piston rod 2
The oil discharged as the oil enters the inner cylinder 13 of No. 2 is reliably guided into the oil of the reserve tank 30.
No gas is mixed in. In this embodiment, the oil communication path is configured as described above, but it may also be configured to extend downwardly through the wall of the reserve tank 30 and open below the oil surface.
逆にピストン２０が下動する場合にはピストン
ロツド２２の内筒１３からの退出した体積相当量
の油は前述と逆に油面０下の開口３５から連通口
３２、絞り部材１４を経て内筒１３内に至るの
で、油にガスを混入するおそれがなく、内筒１３
内に確実に油を補給する。 Conversely, when the piston 20 moves downward, the oil equivalent to the volume that has left the inner cylinder 13 of the piston rod 22 flows from the opening 35 below the oil level 0, through the communication port 32, the throttle member 14, and into the inner cylinder. 13, so there is no risk of gas getting mixed into the oil, and the inner cylinder 13
Make sure to replenish oil inside.
ところで、この実施例では次のような構成およ
び機能を具備している。すなわち、オイルシール
ホルダ１５と、第２のオイルシール１７との間に
ピストンロツド２２を囲む環状の空間１８を形成
し、この空間１８と環状室１６とをオイルシール
ホルダ１５に形成した貫通穴１５ｂにより連通さ
せ、かつ、環状室１６は透孔３４によりリザーブ
タンク３０の油面０の上方に形成されたガス空間
と連通させてある。 By the way, this embodiment has the following configuration and functions. That is, an annular space 18 surrounding the piston rod 22 is formed between the oil seal holder 15 and the second oil seal 17, and this space 18 and the annular chamber 16 are connected by a through hole 15b formed in the oil seal holder 15. In addition, the annular chamber 16 is communicated with a gas space formed above the oil level 0 of the reserve tank 30 through a through hole 34.
従つて、オイルシールホルダ１５に設けたオイ
ルシール１５ａの油密保持力が劣化した場合には
内筒１３からもれ出た油が空間１８および環状室
１６にひとまず貯えられる。そして内筒１３内で
のピストン２０の上動にともなうピストン２０下
面側に圧力低下とリザーブタンク３０内のガス圧
により空間１８等に貯えられていた油がオイルシ
ール１５ａとピストンロツド２２との間を経て内
筒１３内に押しもどされる。そのためオイルシー
ルの油密保持力の劣化が直ちには内筒１３内への
エアの吸込みに至らず、油圧緩衝装置を長寿命と
することができる。 Therefore, when the oil-tightness of the oil seal 15a provided in the oil seal holder 15 deteriorates, oil leaking from the inner cylinder 13 is temporarily stored in the space 18 and the annular chamber 16. As the piston 20 moves upward in the inner cylinder 13, the pressure decreases on the lower surface of the piston 20 and the gas pressure in the reserve tank 30 causes the oil stored in the space 18 etc. to flow between the oil seal 15a and the piston rod 22. After that, it is pushed back into the inner cylinder 13. Therefore, the deterioration of the oil seal's oil sealing ability does not immediately lead to air being sucked into the inner cylinder 13, and the hydraulic shock absorber can have a long life.
なお１９はダストシール、４０はコイルスプリ
ング、４１は円筒状のピストンロツドカバーであ
る。 Note that 19 is a dust seal, 40 is a coil spring, and 41 is a cylindrical piston rod cover.
又、この発明における『リザーブタンク内』と
は、リザーブタンクのタンク内のみならず前記し
たようにリザーブタンクの壁内も含むものであ
る。 Furthermore, "inside the reserve tank" in this invention includes not only the inside of the reserve tank but also the inside of the wall of the reserve tank as described above.
この発明の係る自動二輪車における後輪懸架用
油圧緩衝装置は、リザーブタンクがシリンダに固
定されているとともにシリンダとリザーブタンク
とを連通する連通路がかかるリザーブ内に設置さ
れているため、
油圧緩衝器を倒立に設置した場合の利点、即
ち、車輪の路面への追随性の向上、
と、
リザーブタンクの油面を自由面とした利点、
即ち、リザーブタンクの部品点数の減少および
油圧緩衝器の管理が容易化、
とを確保しているにもかかわらず、
自動二輪車へのリザーブタンクの設置が容易で
あり、
且つ、連通路に後輪の巻き込んだ石等が当たる
ことがないため、連通路が損傷しにくく、この結
果、連通路の維持管理がしやすい。 In the hydraulic shock absorber for rear wheel suspension of a motorcycle according to the present invention, the reserve tank is fixed to the cylinder, and the communication path that communicates the cylinder and the reserve tank is installed in the reserve, so that the hydraulic shock absorber The advantages of installing the oil tank upside down are that the wheels follow the road better, and the oil level of the reserve tank is free.
In other words, the number of parts for the reserve tank is reduced and the management of the hydraulic shock absorber is simplified. Since the communication path is not hit by stones or the like that are caught in it, the communication path is less likely to be damaged, and as a result, the communication path can be easily maintained.
図面はこの発明の実施例に関し、第１図は自動
２輪車の後輪懸架装置の側面図、第２図は第１図
に示した油圧緩衝装置の部分断面側面図である。
１０：シリンダ部、１３：内筒（シリンダ）、
２０：ピストン、２２：ピストンロツド、３０：
リザーブタンク、３２，３３：連通路（３２：連
通口、３３：連通管）、３５：開口。
The drawings relate to an embodiment of the present invention, and FIG. 1 is a side view of a rear wheel suspension system of a two-wheeled motor vehicle, and FIG. 2 is a partially sectional side view of the hydraulic shock absorber shown in FIG. 1. 10: Cylinder part, 13: Inner cylinder (cylinder),
20: Piston, 22: Piston rod, 30:
Reserve tank, 32, 33: communication path (32: communication port, 33: communication pipe), 35: opening.
Claims (1)
外に突出させたピストンロツドと、 前記シリンダに並列状態で固定されたリザーブ
タンクとを備え、 前記シリンダを車体側に取り付けるとともに前
記ピストンロツドをリアアーム側に取り付け、 且つ、前記リザーブタンクに油とガスとを充填
して２相構成とするとともにこの油部と前記シリ
ンダの上端部とを連通路によつて連通し、この連
通路を介して前記油をリザーブタンクに導くよう
にしてなる自動二輪車における後輪懸架用油圧緩
衝装置において、 前記連通路を前記リザーブタンクの内部に設置
したことを特徴とする自動二輪車における後輪懸
架用油圧緩衝装置。[Scope of Claims] 1. A cylinder filled with oil, a piston that moves back and forth within the cylinder, a piston rod that has the piston at one end and has the other end protruding outside the cylinder, and is fixed to the cylinder in parallel. The cylinder is attached to the vehicle body side and the piston rod is attached to the rear arm side, and the reserve tank is filled with oil and gas to form a two-phase configuration, and the oil part and the cylinder are connected to each other. A hydraulic shock absorber for a rear wheel suspension of a motorcycle, which is configured to communicate with the upper end part through a communication passage and guide the oil to a reserve tank via the communication passage, wherein the communication passage is connected to the inside of the reserve tank. A hydraulic shock absorber for rear wheel suspension in a motorcycle, characterized in that it is installed in a motorcycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17518082A JPS5963210A (en) | 1982-10-04 | 1982-10-04 | Hydraulic shock absorber for suspension of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17518082A JPS5963210A (en) | 1982-10-04 | 1982-10-04 | Hydraulic shock absorber for suspension of vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5963210A JPS5963210A (en) | 1984-04-10 |
| JPH0225804B2 true JPH0225804B2 (en) | 1990-06-06 |
Family
ID=15991665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17518082A Granted JPS5963210A (en) | 1982-10-04 | 1982-10-04 | Hydraulic shock absorber for suspension of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5963210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07218211A (en) * | 1994-02-02 | 1995-08-18 | Ckd Corp | Position detector for cylinder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6438816B2 (en) * | 2015-03-26 | 2018-12-19 | 株式会社ショーワ | Air suspension |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53128820A (en) * | 1977-04-14 | 1978-11-10 | Honda Motor Co Ltd | Suspension apparatus for car |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4878413U (en) * | 1971-12-25 | 1973-09-27 |
-
1982
- 1982-10-04 JP JP17518082A patent/JPS5963210A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53128820A (en) * | 1977-04-14 | 1978-11-10 | Honda Motor Co Ltd | Suspension apparatus for car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07218211A (en) * | 1994-02-02 | 1995-08-18 | Ckd Corp | Position detector for cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5963210A (en) | 1984-04-10 |
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