JPS5922356Y2 - hydraulic shock absorber - Google Patents
hydraulic shock absorberInfo
- Publication number
- JPS5922356Y2 JPS5922356Y2 JP8664579U JP8664579U JPS5922356Y2 JP S5922356 Y2 JPS5922356 Y2 JP S5922356Y2 JP 8664579 U JP8664579 U JP 8664579U JP 8664579 U JP8664579 U JP 8664579U JP S5922356 Y2 JPS5922356 Y2 JP S5922356Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- damping force
- control rod
- rod
- oil
- 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
Links
Landscapes
- Fluid-Damping Devices (AREA)
Description
【考案の詳細な説明】
二輪車のリヤークッションその他車体の懸架に用いる油
圧緩衝器において、平坦で良好な道路を走行する場合に
適当な減衰力が得られるように設計すると、凹凸の激し
い路面を走行する場合に緩衝器が極限まで圧縮または伸
長して衝撃を受ける。[Detailed description of the invention] Hydraulic shock absorbers used for motorcycle rear cushions and other vehicle body suspensions are designed to provide an appropriate damping force when traveling on flat, good roads. When the shock absorber is compressed or expanded to the limit, it receives a shock.
また減衰力を大きくしてこのような衝撃を防止すると平
坦な道路を走行する場合の乗心地が劣化する。Furthermore, if such impact is prevented by increasing the damping force, the ride comfort when driving on a flat road deteriorates.
従って本考案は簡単な構造をもって上述のような欠点を
除去したものである。Therefore, the present invention has a simple structure and eliminates the above-mentioned drawbacks.
第１図は本考案実施例の縦断面図、第２図は第１図のＡ
−Ａ断面図で、油１を充填したシリンダ２に減衰力発生
用の油孔３を有するピストン４を摺動自在に嵌合し、か
つ上記シリンダの上端を貯油槽５に連結してこの貯油槽
の内部に高圧気体を封入した気のうを収容しである。Figure 1 is a longitudinal sectional view of the embodiment of the present invention, and Figure 2 is A of Figure 1.
In the -A sectional view, a piston 4 having an oil hole 3 for generating damping force is slidably fitted into a cylinder 2 filled with oil 1, and the upper end of the cylinder is connected to an oil storage tank 5 to store oil. The tank contains an air sac filled with high-pressure gas.
またピストン４には合成樹脂環６を嵌合すると共に油孔
３の下部開口面にばね７で押されたディスクバルブ８を
設けてこのバルブにオリフィス９を形成し、更にＯリン
グ１０およびオイルシール１１を取付けたロッドガイド
１２をシリンダ２の下端に嵌合してスナップリング１３
とかしめ部１４とで固定することにより、ロッドガイド
１２を介してピストンロッド１５を外部に引き出しであ
る。Further, a synthetic resin ring 6 is fitted to the piston 4, and a disc valve 8 pressed by a spring 7 is provided on the lower opening surface of the oil hole 3, an orifice 9 is formed in this valve, and an O-ring 10 and an oil seal are provided. Fit the rod guide 12 with the snap ring 11 attached to the lower end of the cylinder 2, and
By fixing with the crimped portion 14, the piston rod 15 can be pulled out to the outside via the rod guide 12.
このような油圧緩衝器においてピストンロッド１５の中
心軸線上に油路１６を形成し、かつ該ロッドにおけるピ
ストン下部の側面に油孔１７を設けてピストン４の両側
を連結しである。In such a hydraulic shock absorber, an oil passage 16 is formed on the central axis of the piston rod 15, and an oil hole 17 is provided in the side surface of the lower part of the piston in the rod to connect both sides of the piston 4.
またシリンダ２の上底面に減衰力制御ロッド１８を植設
して、このロッドを前記油路１６に摺動自在に嵌合し、
かつ該ロッドの側面に軸方向の凹溝１９を形成してその
断面積を軸方向の位置に応じてそれぞれ適当な大きさと
しである。Further, a damping force control rod 18 is installed on the upper bottom surface of the cylinder 2, and this rod is slidably fitted into the oil passage 16,
Further, an axial concave groove 19 is formed on the side surface of the rod, and its cross-sectional area is set to an appropriate size depending on the axial position.
更にピストンロッド１５の上端には上記制御ロッド１８
に対して比較的密に嵌合した筒体２０を設けて、この筒
体とロッド１５にピストンを固定するためのナツト２１
の内面との間にＯリング２２を嵌合し、蓋板２３で押え
である。Furthermore, the control rod 18 is attached to the upper end of the piston rod 15.
A cylindrical body 20 is fitted relatively tightly to the rod 15, and a nut 21 is provided for fixing the piston to the cylindrical body and the rod 15.
An O-ring 22 is fitted between the inner surface of the cover plate 23 and a cover plate 23 is used to hold it down.
上述の油圧緩衝器が圧縮されてピストン４が第１図の上
方へ移動する場合はバルブ８が開いて比較的小さい減衰
力が発生し、また伸長によりピストンが下降する場合は
バルブ８が閉じるからオリフィス９を油が流通する。When the above-mentioned hydraulic shock absorber is compressed and the piston 4 moves upward in FIG. 1, the valve 8 opens and a relatively small damping force is generated, and when the piston moves downward due to extension, the valve 8 closes. Oil flows through the orifice 9.
かつ同時に矢印ｐのように油路１６内における凹溝１９
を通って油が流通する。At the same time, a concave groove 19 in the oil passage 16 as shown by arrow p
Oil flows through.
このためピストン４がほは゛第１図に示したような位置
を保持して、比較的小さい振幅で上下に移動する場合は
上記凹溝１９を油が流通し、圧縮行程では勿論であるが
伸長行程の減衰力も比較的小さくなる。For this reason, when the piston 4 is held in the position shown in Figure 1 and moves up and down with a relatively small amplitude, oil flows through the groove 19, and of course during the compression stroke, but also during the expansion stroke. The stroke damping force is also relatively small.
従って上記凹溝１９の形状大きさを適当に設計しておく
ことにより平坦な路面を走行する場合の乗心地を良好に
することができる。Therefore, by appropriately designing the shape and size of the groove 19, it is possible to improve the riding comfort when driving on a flat road surface.
また凹凸の激しい路面を走行すると、ピストン４が大き
な振幅をもって上下に移動する。Furthermore, when the vehicle travels on a highly uneven road surface, the piston 4 moves up and down with a large amplitude.
従って図のように凹溝１９を制御ロッド１８の上下端に
近附く程小さく形成しておくと、ピストン４が図の位置
から上昇または下降するに伴って減衰力が増大し、この
ため路面から受ける摘部が極めて大きい場合でも車体の
振動が有効に抑制される。Therefore, if the concave groove 19 is formed smaller as it approaches the upper and lower ends of the control rod 18 as shown in the figure, the damping force will increase as the piston 4 moves up or down from the position shown in the figure, which will cause the road surface to deteriorate. Even when the vibration of the vehicle body is extremely large, vibrations of the vehicle body are effectively suppressed.
すなわち緩衝器が極限まで高速度で伸長または圧縮され
て急激に停止するようなおそれがないから、上述のよう
な悪路においても良好な乗心地が得られる。That is, since there is no fear that the shock absorber will be expanded or compressed at extremely high speed and suddenly stop, a good ride comfort can be obtained even on the rough roads described above.
なお筒体２０はＯリング２２の変形によって半径方向へ
多少揺動し得る。Note that the cylindrical body 20 can swing somewhat in the radial direction due to the deformation of the O-ring 22.
従って筒体２０をロッド１８に比較的密に嵌合して、油
路１６を該ロッドより多少大きく形成しておくことによ
り、ロッド１５と１８の軸線を厳密に一致させる必要が
なく、しかも所定の減衰力特性を得ることができる。Therefore, by fitting the cylindrical body 20 into the rod 18 relatively tightly and forming the oil passage 16 somewhat larger than the rod, it is not necessary to strictly align the axes of the rods 15 and 18, and moreover, it is possible to damping force characteristics can be obtained.
以上実施例について説明したように本考案は、良好な路
面においては減衰力を小さくして乗心地を向上し得る。As described above with respect to the embodiments, the present invention can reduce the damping force on a good road surface and improve ride comfort.
しかも凹凸の激しい悪路ではピストンがシリンダの上端
あるいは下端に近附くに従って減衰力が増大するから、
緩衝器が極限まで高速度で圧縮または伸長して急激に停
止し、その衝撃で乗心地が損われるようなおそれを除く
ことができる。Moreover, on rough roads with severe bumps, the damping force increases as the piston approaches the top or bottom of the cylinder.
It is possible to eliminate the possibility that the shock absorber compresses or expands at an extremely high speed and suddenly stops, resulting in a loss of riding comfort due to the impact.
かつ構造も簡単で、このため安定した減衰力が得られる
。Moreover, the structure is simple and stable damping force can be obtained.
第１図は本考案実施例の縦断面図、第２図は第１図のＡ
−Ａ断面図である。
なお図において、２はシリンダ、３は減衰力発生用の油
孔、４はピストン、１５はピストンロッド、１６はピス
トンの両側を連結する油路、１７は油孔、１８は減衰力
制御ロッド、１９は凹溝、で゛ある。Figure 1 is a longitudinal sectional view of the embodiment of the present invention, and Figure 2 is A of Figure 1.
-A sectional view. In the figure, 2 is a cylinder, 3 is an oil hole for generating damping force, 4 is a piston, 15 is a piston rod, 16 is an oil passage connecting both sides of the piston, 17 is an oil hole, 18 is a damping force control rod, 19 is a concave groove.
Claims (1)
ストンを摺動自在に嵌合すると共にピストンロッドの中
心軸線上に上記ピストンの両側を連結する油路を形成し
て、前記シリンダの底面に植設した減衰力制御ロッドを
上記油路に摺動自在に嵌合し、かつ上記制御ロッドの側
面に、該制御ロッドの上下端に近附く程小さく中央部で
大きくなるよう軸方向の凹溝を形成した油圧緩衝器。A piston having an oil hole for generating damping force is slidably fitted into a cylinder filled with oil, and an oil passage connecting both sides of the piston is formed on the central axis of the piston rod, and the bottom surface of the cylinder is A damping force control rod installed in the control rod is slidably fitted into the oil passage, and a damping force control rod is fitted on the side surface of the control rod in an axial direction such that it becomes smaller near the upper and lower ends of the control rod and becomes larger in the center. Hydraulic shock absorber with concave grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8664579U JPS5922356Y2 (en) | 1979-06-26 | 1979-06-26 | hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8664579U JPS5922356Y2 (en) | 1979-06-26 | 1979-06-26 | hydraulic shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS565842U JPS565842U (en) | 1981-01-19 |
| JPS5922356Y2 true JPS5922356Y2 (en) | 1984-07-04 |
Family
ID=29319892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8664579U Expired JPS5922356Y2 (en) | 1979-06-26 | 1979-06-26 | hydraulic shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5922356Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013204779A (en) * | 2012-03-29 | 2013-10-07 | Hitachi Automotive Systems Ltd | Shock absorber |
| JP6506934B2 (en) * | 2014-09-26 | 2019-04-24 | 日立オートモティブシステムズ株式会社 | Shock absorber |
-
1979
- 1979-06-26 JP JP8664579U patent/JPS5922356Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS565842U (en) | 1981-01-19 |
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