JPS6317874Y2 - - Google Patents
Info
- Publication number
- JPS6317874Y2 JPS6317874Y2 JP1983129407U JP12940783U JPS6317874Y2 JP S6317874 Y2 JPS6317874 Y2 JP S6317874Y2 JP 1983129407 U JP1983129407 U JP 1983129407U JP 12940783 U JP12940783 U JP 12940783U JP S6317874 Y2 JPS6317874 Y2 JP S6317874Y2
- Authority
- JP
- Japan
- Prior art keywords
- damping force
- shock absorber
- hydraulic shock
- piston rod
- rotary valve
- 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
- 238000013016 damping Methods 0.000 claims description 50
- 230000035939 shock Effects 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 239000003921 oil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Sliding Valves (AREA)
- Fluid-Damping Devices (AREA)
Description
【考案の詳細な説明】
本考案は減衰力を低、中、高の３段に切り換え
られる油圧緩衝器に関する。[Detailed Description of the Invention] The present invention relates to a hydraulic shock absorber that can switch the damping force into three stages: low, medium, and high.
自動車の懸架ばねはやわらかくすると路面から
受けるシヨツクを大幅に低減できるが、逆にばね
自体が生じる振動が長びくので、今日では吸振作
用する油圧緩衝器が併用されている。また、この
油圧緩衝器に於ける吸振用振動減衰部として、シ
リンダ中を摺動するピストンボデイに減衰弁を設
けるとともに、この減衰弁をバイパスする油路径
を３段階に切り換えることによつて、減衰力を高
Ｈ、中Ｎ、低Ｌの３段階に調節できるものが提供
されている。 If the suspension springs of an automobile are made softer, they can greatly reduce the shock they receive from the road surface, but on the other hand, the vibrations generated by the springs themselves are prolonged, so today hydraulic shock absorbers are also used to absorb vibrations. In addition, as a vibration damping part for vibration absorption in this hydraulic shock absorber, a damping valve is provided on the piston body that slides in the cylinder, and the diameter of the oil passage that bypasses this damping valve is switched in three stages. There is a device that allows you to adjust the force to three levels: high H, medium N, and low L.
ところが、この様に３段階の切り換えを行うア
クチユエータにあつては、１段目のＬから３段目
のＨに減衰力を切り換えたい場合には、２段目の
Ｎの切り換え位置を経由して回転操作などが行わ
れねばならない。特に、アクチユエータの操作方
向が電気的、機械的性能から一方向に限定される
場合には、かかる経由動作を避けられない。 However, with an actuator that switches in three stages like this, if you want to switch the damping force from the first stage L to the third stage H, the damping force must be changed via the second stage N switching position. Rotation operations etc. must be performed. Particularly, when the operating direction of the actuator is limited to one direction due to electrical and mechanical performance, such intermediate operation is unavoidable.
しかしながら、自動車の走行状態、例えば低速
走行中に急カーブする場合や急ブレーキをかけた
状態では、所定の車輪側にある油圧緩衝器を低減
衰力から高減衰力に急速に切り換えることによつ
てアンチロール対策やアンチノーズダイブ対策
し、自動車の姿勢制御をする必要があるのに、２
段目の中減衰力の切り換え位置を経由するため
に、低減衰力から高減衰力に切り換わる速度が遅
くなり、所望の姿勢制御効果が十分に得られない
という欠点があつた。 However, in driving conditions of a car, such as when making a sharp turn while driving at low speed or applying sudden braking, the hydraulic shock absorber on the specified wheel side is rapidly switched from low damping force to high damping force. Although it is necessary to take anti-roll measures, anti-nose dive measures, and control the vehicle's attitude, 2.
Since the damping force passes through the intermediate damping force switching position in the second stage, the speed at which the damping force is switched from low damping force to high damping force is slow, resulting in a drawback that the desired attitude control effect cannot be sufficiently obtained.
本考案は上記従来の欠点に鑑みなされたもので
あり、特に、高、中、低の３種の減衰力を任意に
切り換える場合に、低減衰力または中減衰力から
直接高減衰力に折り換え制御できる油圧緩衝器を
提供することを目的とする。 The present invention has been developed in view of the above-mentioned drawbacks of the conventional technology, and is particularly designed to directly switch from low or medium damping force to high damping force when arbitrarily switching between three types of damping force: high, medium, and low. The purpose is to provide a hydraulic shock absorber that can be controlled.
そして、その目的達成のため、本考案はシリン
ダ内を減衰弁を持つたピストンによつて２油室に
区画し、上記減衰弁をバイパスして上記２油室に
連通する通路をピストンロツドに設け、この通路
断面積をピストンロツド内に設けたロータリバル
ブによつて３段階に切り換える減衰力調整可能な
油圧緩衝器に於いて、上記ロータリバルブによる
減衰力が、低減衰力または中減衰力からそれぞれ
中減衰力または低減衰力を介さず、高減衰力に切
り換えることができる様な構成にしたのである。 In order to achieve this objective, the present invention divides the inside of the cylinder into two oil chambers by a piston having a damping valve, and provides a passage in the piston rod that bypasses the damping valve and communicates with the two oil chambers. In a hydraulic shock absorber with adjustable damping force in which the passage cross-sectional area is switched in three stages by a rotary valve provided in the piston rod, the damping force by the rotary valve is changed from low damping force or medium damping force to medium damping, respectively. The structure is such that the damping force can be switched to high damping force without using force or low damping force.
以下に、本考案の実施例を図面について説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本考案の油圧緩衝器を具体的に示す図
である。１は外筒、２は外筒１内にあつて、内部
にピストンボデイ３を摺動自在に有するシリン
ダ、４はこのシリンダ２と外筒１との間に形成し
たリザーバである。このリザーバ４は下部のボト
ムバルブを介してシリンダ２内に連通しており、
この中には作動オイルと加圧ガスが充満してい
る。 FIG. 1 is a diagram specifically showing the hydraulic shock absorber of the present invention. Reference numeral 1 denotes an outer cylinder, 2 a cylinder located within the outer cylinder 1 and having a piston body 3 slidably therein, and 4 a reservoir formed between the cylinder 2 and the outer cylinder 1. This reservoir 4 communicates with the inside of the cylinder 2 via a bottom valve at the bottom,
This is filled with hydraulic oil and pressurized gas.
上記ピストンボデイ３はシリンダ２内を２油室
に区画しており、減衰力を弱めるときに減衰力発
生弁５によつて開かれるオリフイス６を有する。 The piston body 3 divides the inside of the cylinder 2 into two oil chambers, and has an orifice 6 that is opened by a damping force generating valve 5 when damping force is weakened.
上記ピストンボデイ３はシリンダ２内を出入す
るピストンロツド７端に固定されており、このピ
ストンロツド７には中空孔８が設けられている。
この中空孔８は上記調整ロツド挿入孔、下部が作
動オイルの通路となつていて、挿入孔には調整ロ
ツド９が挿通され、通路には調整ロツド９下端に
一体に設けた筒状のロータリバルブ１０が回転自
在に挿通されている。このロータリバルブ１０に
は１個の比較的大きい切換孔１１が貫通して設け
られ、これに対向する部位のピストンロツド７に
は、第２図に示す様に開口面積が大きいオリフイ
ス１２、小さいオリフイス１３、中ほどのオリフ
イス１４、小さいオリフイス１５がそれぞれ円周
方向に、順次等間隔で穿設されている。 The piston body 3 is fixed to the end of a piston rod 7 that moves in and out of the cylinder 2, and the piston rod 7 is provided with a hollow hole 8.
This hollow hole 8 is an insertion hole for the adjustment rod, and the lower part is a passage for operating oil.An adjustment rod 9 is inserted into the insertion hole, and a cylindrical rotary valve integrally provided at the lower end of the adjustment rod 9 is inserted into the passage. 10 is rotatably inserted. A relatively large switching hole 11 is provided through the rotary valve 10, and an orifice 12 with a large opening area and an orifice 13 with a small opening area are provided in the piston rod 7 at a portion opposite to this, as shown in FIG. , a middle orifice 14, and a small orifice 15 are sequentially bored in the circumferential direction at equal intervals.
また、調整ロツド９が挿通される通路およびロ
ータリバルブ１０の筒孔は、切換孔１１とオリフ
イス１２乃至１５のいずれかとが連通したとき、
ピストンボデイの減衰バルブをパイパスして、上
記区画した２つの油室を連通する様になつてい
る。 Furthermore, when the passage through which the adjustment rod 9 is inserted and the cylindrical hole of the rotary valve 10 communicate with the switching hole 11 and any of the orifices 12 to 15,
Bypassing the damping valve of the piston body, the two partitioned oil chambers are communicated with each other.
なお、調整ロツド９はステツプモータなどのア
クチユエータによつて、等しい角度だけ一定方向
に回転駆動される。 The adjustment rod 9 is rotated by an equal angle in a fixed direction by an actuator such as a step motor.
かかる構成の油圧緩衝器にあつては、自動車の
走行状態および荷重状態に応じて、自動的にまた
は任意に調整ロツド１９が中空孔８内に所定量回
転し、切換孔１１がオリフイス１２乃至１５のい
ずれかに開口して、各オリフイス径に応じた作動
オイルを、減衰弁５をバイパスして両油室間に通
じ、減衰弁５による減衰量を調節することにな
る。 In the hydraulic shock absorber having such a configuration, the adjustment rod 19 is automatically or arbitrarily rotated into the hollow hole 8 by a predetermined amount depending on the driving condition and load condition of the automobile, and the switching hole 11 is rotated through the orifices 12 to 15. The hydraulic oil according to the diameter of each orifice is opened between the two oil chambers, bypassing the damping valve 5, and the amount of damping caused by the damping valve 5 is adjusted.
かかる場合に於いて、自動車が低中速で走行中
に急カーブしたり、急ブレーキを掛けたりする場
合があるが、例えば、低速時では、第２図に示す
様に、切換孔１１が開口断面積の最も大きいオリ
フイス１２に対向しているため、ピストンロツド
７の伸縮時に両油室間にバイパスして流れる作動
オイルの量が多くなり、減衰力が低くなつていた
ものが、アクチユエータによつて調整ロツド９を
90゜右回転させるだけで、切換孔１１をオリフイ
ス１３に開口させることができ、そのオリフイス
径に合つた高い減衰力を直ちに得ることができ
る。 In such a case, the vehicle may make a sharp turn or apply sudden brakes while driving at low to medium speeds. For example, at low speeds, the switching hole 11 may open as shown in FIG. Because it faces the orifice 12 with the largest cross-sectional area, the amount of working oil that bypasses and flows between both oil chambers when the piston rod 7 expands and contracts increases, reducing the damping force. Adjustment rod 9
By simply turning the switch 90° clockwise, the switching hole 11 can be opened to the orifice 13, and a high damping force matching the diameter of the orifice can be immediately obtained.
同様にして、切換孔１１が、第３図に示す様
に、中減衰力を発生させるオリフイス１４に開口
している場合に於いて、高減衰力を得る場合に
は、調整ロツド９を90゜右回転させるだけ良い。
この様に、低減衰力または中減衰力のいずれから
も速かに高減衰力に入らせることができるため、
低中速域走行におけるローリングやノーズダイビ
ングに対して時間遅れなく、自動車の姿勢制御を
確実に行うことができる。 Similarly, when the switching hole 11 opens into the orifice 14 that generates a medium damping force, as shown in FIG. Just rotate it to the right.
In this way, it is possible to quickly enter high damping force from either low or medium damping force,
It is possible to reliably control the attitude of the vehicle without any time delay in response to rolling or nose diving when driving in the low to medium speed range.
なお、上記実施例に於いては、切換孔１１をロ
ータリバルブ１０側に設け、オリフイス１２乃至
１５をピストンロツド７側に設けたのであるが、
切換孔１１をピストンロツド７側に設け、オリフ
イス１２乃至１５をロータリバルブ１０側に設け
ることによつても、上記同様の効果が得られる。 In the above embodiment, the switching hole 11 was provided on the rotary valve 10 side, and the orifices 12 to 15 were provided on the piston rod 7 side.
The same effect as described above can also be obtained by providing the switching hole 11 on the piston rod 7 side and the orifices 12 to 15 on the rotary valve 10 side.
すなわち、これらの各実施例によれば、調整ロ
ツド９を一方向回転する場合でも、低減衰力を中
減衰力モードにいれることなく、高減衰力に直接
切り換えて入れることができるため、特に、低速
時に於ける急カーブ時や急ブレーキ時に於けるア
ンチロールおよびアンチノーズダイブの姿勢制御
の応答性を改善することができるものである。 That is, according to each of these embodiments, even when the adjustment rod 9 is rotated in one direction, the low damping force can be directly switched to the high damping force mode without having to enter the medium damping force mode. This makes it possible to improve the responsiveness of attitude control for anti-roll and anti-nose dive during sharp curves and sudden braking at low speeds.
以上説明した様に、本考案の油圧緩衝器では、
減衰力を低、中、高の３段階に分けて切り換えら
れる様にした場合に、低減衰力から高減衰力への
切り換えを迅速に行わしめうるので、低速走行時
のローリングおよびノーズダイビングに直ちに対
処して、自動車の姿勢を迅速に正すことができる
という効果が得られるものである。 As explained above, in the hydraulic shock absorber of the present invention,
If the damping force can be switched in three stages: low, medium, and high, it will be possible to quickly switch from low damping force to high damping force, making it easy to roll and nose dive when driving at low speeds. This has the effect of being able to quickly correct the attitude of the vehicle.
第１図は本考案の油圧緩衝器か一部切断して示
した正面図、第２図および第３図はピストンロツ
ドとロータリバルブの関係を示す説明図的断面図
である。
２……シリンダ、３……ピストンボデイ、５…
…減衰力発生弁、７……ピストンロツド、８……
通路、９……調整ロツド、１０……ロータリバル
ブ、１１……切換孔、１２，１３，１４，１５…
…オリフイス。
FIG. 1 is a partially cutaway front view of the hydraulic shock absorber of the present invention, and FIGS. 2 and 3 are explanatory sectional views showing the relationship between the piston rod and the rotary valve. 2...Cylinder, 3...Piston body, 5...
...Damping force generating valve, 7... Piston rod, 8...
Passage, 9... Adjustment rod, 10... Rotary valve, 11... Switching hole, 12, 13, 14, 15...
...orifice chair.
Claims (1)
により２油室に区画し、上記減衰弁をバイパス
して上記２油室に連通する通路をピストンロツ
ドに設け、この通路断面積をピストンロツド内
に設けた一方向回転型のロータリバルブによつ
て３段階に切り換える様にした減衰力調整可能
な油圧緩衝器に於いて、上記ロータリバルブは
低減衰力から、中減衰力を介さず、直ちに高減
衰力に切換可能に構成したことを特徴とする油
圧緩衝器。 (2) ロータリバルブはアクチユエータによつて回
転角を制御される様にした実用新案登録請求の
範囲第１項に記載の油圧緩衝器。 (3) ロータリバルブが２油室に連通する通路に通
じる一個の切換孔を有し、この切換孔がピスト
ンロツドを貫通しかつ開口面積の異る４個のオ
リフイスに選択的に開口する様にした実用新案
登録請求の範囲第１項に記載の油圧緩衝器。 (4) ４個のオリフイスが大、中、小の順序で、ピ
ストンロツドの円周方向に設けられてなる実用
新案登録請求の範囲第１項に記載の油圧緩衝
器。[Claims for Utility Model Registration] (1) The inside of the cylinder is divided into two oil chambers by a piston having a damping force generating valve, and a passage is provided in the piston rod that bypasses the damping valve and communicates with the two oil chambers; In a hydraulic shock absorber with adjustable damping force in which the cross-sectional area of the passage is switched in three stages by a unidirectional rotary valve installed in the piston rod, the rotary valve has a low damping force to a medium damping force. A hydraulic shock absorber characterized in that it is configured to be able to immediately switch to a high damping force without using force. (2) The hydraulic shock absorber according to claim 1, wherein the rotary valve has a rotation angle controlled by an actuator. (3) The rotary valve has one switching hole that communicates with the passage that communicates with the two oil chambers, and this switching hole passes through the piston rod and selectively opens into four orifices with different opening areas. A hydraulic shock absorber according to claim 1 of the utility model registration claim. (4) The hydraulic shock absorber according to claim 1, wherein four orifices are arranged in the order of large, medium, and small in the circumferential direction of the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12940783U JPS6037643U (en) | 1983-08-22 | 1983-08-22 | hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12940783U JPS6037643U (en) | 1983-08-22 | 1983-08-22 | hydraulic shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6037643U JPS6037643U (en) | 1985-03-15 |
| JPS6317874Y2 true JPS6317874Y2 (en) | 1988-05-20 |
Family
ID=30293223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12940783U Granted JPS6037643U (en) | 1983-08-22 | 1983-08-22 | hydraulic shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037643U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60102538U (en) * | 1983-12-20 | 1985-07-12 | トキコ株式会社 | hydraulic shock absorber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5565741A (en) * | 1978-11-10 | 1980-05-17 | Tokico Ltd | Shock absorber |
| JPS5868527A (en) * | 1981-10-16 | 1983-04-23 | Kayaba Ind Co Ltd | Regulator for damping force of strut type shock absorber |
| JPS6026344B2 (en) * | 1979-04-10 | 1985-06-22 | 富士通株式会社 | Clock signal generation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026344U (en) * | 1983-07-30 | 1985-02-22 | 厚木自動車部品株式会社 | hydraulic shock absorber |
-
1983
- 1983-08-22 JP JP12940783U patent/JPS6037643U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5565741A (en) * | 1978-11-10 | 1980-05-17 | Tokico Ltd | Shock absorber |
| JPS6026344B2 (en) * | 1979-04-10 | 1985-06-22 | 富士通株式会社 | Clock signal generation method |
| JPS5868527A (en) * | 1981-10-16 | 1983-04-23 | Kayaba Ind Co Ltd | Regulator for damping force of strut type shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6037643U (en) | 1985-03-15 |
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