JPH0323367Y2 - - Google Patents

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Publication number
JPH0323367Y2
JPH0323367Y2 JP6888784U JP6888784U JPH0323367Y2 JP H0323367 Y2 JPH0323367 Y2 JP H0323367Y2 JP 6888784 U JP6888784 U JP 6888784U JP 6888784 U JP6888784 U JP 6888784U JP H0323367 Y2 JPH0323367 Y2 JP H0323367Y2
Authority
JP
Japan
Prior art keywords
valve
spring
damper
hydraulic cylinder
spring constant
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
Application number
JP6888784U
Other languages
Japanese (ja)
Other versions
JPS60180616U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP6888784U priority Critical patent/JPS60180616U/en
Publication of JPS60180616U publication Critical patent/JPS60180616U/en
Application granted granted Critical
Publication of JPH0323367Y2 publication Critical patent/JPH0323367Y2/ja
Granted legal-status Critical Current

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  • Fluid-Damping Devices (AREA)

Description

【考案の詳細な説明】 (考案の分野) 本考案は、ばね定数可変型ダンパーの改良に関
するものである。
[Detailed Description of the Invention] (Field of the Invention) The present invention relates to an improvement of a variable spring constant damper.

(従来技術) 車両にとつては、通常走行時にはその乗心地性
を高く保つべくダンパーのばね特性をソフトに、
又、ブレーキング時、或は旋回時にはその走行安
定性を高く保つべくそのダンパーのばね特性をハ
ードに保つことが望ましい。
(Prior art) In order to maintain high ride comfort during normal driving, damper spring characteristics are softened.
Furthermore, it is desirable to keep the spring characteristics of the damper hard in order to maintain high running stability during braking or turning.

そこで、上下動自在なセパレータを中間に介し
てメインスプリングとサブスプリングを直列に配
置し、上記セパレータを油圧シリンダユニツトに
保持せしめ、該油圧シリンダユニツトを連通路を
介してアキユームレータに連通するとともに、上
記連通路の中間に該連通路を開閉すべき開閉弁を
介設して成るばね定数可変型ダンパーが提案され
る。而して、このばね定数可変型ダンパーは、開
閉弁を閉じることによつて油圧シリンダユニツト
とアキユームレータとの連通を遮断し、油圧シリ
ンダユニツトの作動をロツクして一方のクツシヨ
ンスプリングの作用を阻止し、ダンパーのばね定
数を高く調整するものであり、開閉弁としてはス
プール弁等が採用されていた。
Therefore, the main spring and the sub-spring are arranged in series with a vertically movable separator interposed between them, the separator is held in a hydraulic cylinder unit, and the hydraulic cylinder unit is communicated with the accumulator through a communication path. A variable spring constant damper has been proposed in which an on-off valve for opening and closing the communication passage is interposed in the middle of the communication passage. This variable spring constant damper closes the on-off valve to cut off communication between the hydraulic cylinder unit and the accumulator, locking the operation of the hydraulic cylinder unit and reducing the action of one cushion spring. The spring constant of the damper was adjusted to a high value, and a spool valve or the like was used as the on-off valve.

しかしながら、上記ばね定数可変型ダンパーに
あつては、開閉弁からの油のリークが避けられ
ず、油圧シリンダユニツトの作動を完全にロツク
することができず、その機能を完全に果たすこと
ができなかつた。
However, with the variable spring constant type damper, oil leakage from the on-off valve is unavoidable, and the operation of the hydraulic cylinder unit cannot be completely locked, making it impossible to fully perform its function. Ta.

(考案の目的) 本考案は上記不具合を解消すべく成されたもの
で、その目的とする処は、開閉弁からの油のリー
クを阻止してその機能を完全に果たすことができ
るばね定数可変型ダンパーを提供するにある。
(Purpose of the invention) The present invention was made to solve the above-mentioned problems, and its purpose is to provide a variable spring constant that can prevent oil leakage from the on-off valve and completely fulfill its function. There is a mold damper to provide.

(考案の構成) 上記目的を達成すべく本考案は、前述のばね定
数可変型ダンパーにおいて、開閉弁の上流側と下
流側を結ぶバイパス路を設けるとともに、該バイ
パス路中に差圧で作動し、開閉弁の閉時に閉じる
ロツク弁を介設した。
(Structure of the invention) In order to achieve the above object, the present invention provides the above-mentioned variable spring constant damper with a bypass passage connecting the upstream side and the downstream side of the on-off valve, and operates with a differential pressure in the bypass passage. A lock valve was installed that closes when the on-off valve is closed.

(実施例) 以下に本考案の好適一実施例を添付図面に基づ
いて説明する。
(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

図面は本考案に係るばね定数可変型ダンパーの
破断側面図であり、図中、1はシリンダであつ
て、これの内部には図示の如くピストンロツド2
が上方より挿入され、該ピストンロツド2の下端
にはシリンダ1内周に上下摺動自在に嵌合するピ
ストン(図示せず)が結着されている。尚、この
ピストンには減衰力を発生するバルブ機構が設け
られ、シリンダ1内には作動油が封入されてい
る。
The drawing is a cutaway side view of a variable spring constant damper according to the present invention. In the drawing, 1 is a cylinder, and inside this is a piston rod 2 as shown.
is inserted from above, and a piston (not shown) is connected to the lower end of the piston rod 2, which fits into the inner circumference of the cylinder 1 so as to be vertically slidable. The piston is provided with a valve mechanism that generates a damping force, and the cylinder 1 is filled with hydraulic oil.

上記ピストンロツド2の上端部は図示の如く上
下のマウントラバー3,4にて挟持されたブラケ
ツト5を介して車両車体側に連結支持されてい
る。このピストンロツド2の前記マウントラバー
4の下方には下方が開口する筒状カバー6がピス
トンロツド2及びシリンダ1の外周の一部を被う
べく結着されている。尚、図中、7はストツパラ
バーである。
The upper end of the piston rod 2 is connected and supported to the vehicle body via a bracket 5 which is held between upper and lower mount rubbers 3 and 4 as shown. A cylindrical cover 6 which is open at the bottom is connected below the mount rubber 4 of the piston rod 2 so as to cover part of the outer periphery of the piston rod 2 and the cylinder 1. In addition, in the figure, 7 is a stopper lever.

又、前記ブラケツト5の下面には環状のブラケ
ツト8を固設し、このブラケツト8には一定間隔
をおいて複数の取付部8a……を形成し、この取
付部8aに夫々油圧シリンダユニツト10を固設
する。各油圧シリンダユニツト10のシリンダ1
1内にはピストン12が上下摺動自在に嵌装され
ており、このピストン12からはピストンロツド
13が下方に一体に延出している。そして、各ピ
ストンロツド13の下端にはセパレータ14が固
定されており、該セパレータ14とシリンダ1下
部外周に固着されたスプリングシート15間には
メインスプリング16が張架され、セパレータ1
4と前記ブラケツト5間にはサブスプリングSP
が張架されている。
Further, an annular bracket 8 is fixed to the lower surface of the bracket 5, and a plurality of mounting portions 8a are formed at regular intervals on this bracket 8, and a hydraulic cylinder unit 10 is mounted to each of the mounting portions 8a. To be fixed. Cylinder 1 of each hydraulic cylinder unit 10
A piston 12 is fitted in the piston 1 so as to be vertically slidable, and a piston rod 13 integrally extends downward from the piston 12. A separator 14 is fixed to the lower end of each piston rod 13, and a main spring 16 is stretched between the separator 14 and a spring seat 15 fixed to the lower outer periphery of the cylinder 1.
There is a sub spring SP between 4 and the bracket 5.
is being strung up.

而して、各油圧シリンダユニツト10のシリン
ダ11内にピストン12にて区画される油室S1
連通路17を介してダンパー本体とは別設される
アキユームレータ20の油室S2に連通している。
そして、連通路17の中間には両油室S1,S2の連
通を適宜遮断すべき開閉弁たるスプール弁30が
設けられており、該スプール弁30はバルブケー
ス31と該バブルケース31内の連通路32を開
閉すべきスプール33及び該スプール33を駆動
すべきソレノイド等のアクチユエータ34とで構
成される。
Thus, the oil chamber S1 defined by the piston 12 in the cylinder 11 of each hydraulic cylinder unit 10 is connected to the oil chamber S2 of the accumulator 20, which is installed separately from the damper body, via the communication passage 17. It's communicating.
A spool valve 30 is provided in the middle of the communication passage 17 as an on-off valve to appropriately shut off communication between the oil chambers S 1 and S 2 . It is comprised of a spool 33 that opens and closes the communication path 32 and an actuator 34 such as a solenoid that drives the spool 33.

ところで、前記連通路17には上記スプール弁
30の上流側と下流側を結ぶバイパス路35が設
けられており、該バイパス路35には常時スプリ
ング36にて開方向へ付勢されたロツク弁37が
設けられている。
Incidentally, the communication passage 17 is provided with a bypass passage 35 that connects the upstream side and the downstream side of the spool valve 30, and the bypass passage 35 has a lock valve 37 which is always biased in the opening direction by a spring 36. is provided.

次に本ばね定数可変型ダンパーの作用を説明す
る。
Next, the action of this variable spring constant type damper will be explained.

車両の通常走行時においてはスプール弁30と
ロツク弁37は図示の如く共に開いており、従つ
て油室S1とS2とは相連通している。
When the vehicle is normally running, both the spool valve 30 and the lock valve 37 are open as shown, and therefore the oil chambers S1 and S2 are in communication with each other.

而して、路面起伏に追従してシリンダ1とピス
トンロツド2とが相対伸縮動を繰り返せば、メイ
ンスプリング16とサブスプリングSPは伸縮し、
これに伴いセパレータ14及びピストンロツド1
3……は上下動し、油は油室S1,S2間を往復動す
る。このときのダンパーのばね定数はメインスプ
リング16とサブスプリングSPそれぞれのばね
定数を合成した比較的低い値を示し、従つてこの
通常走行時においては微小振動が効果的に吸収さ
れ、車両の乗心地性は比較的良好なものとなる。
Therefore, when the cylinder 1 and the piston rod 2 repeat relative expansion and contraction movements following the undulations of the road surface, the main spring 16 and the sub-spring SP expand and contract.
Along with this, the separator 14 and the piston rod 1
3... moves up and down, and the oil moves back and forth between the oil chambers S 1 and S 2 . The spring constant of the damper at this time is a relatively low value that is a combination of the spring constants of the main spring 16 and the sub-spring SP. Therefore, during normal driving, minute vibrations are effectively absorbed and the ride quality of the vehicle is improved. The properties are relatively good.

次に車両のブレーキング時、或は旋回時におい
て、アクチユエータ34を駆動し、スプール弁3
0を閉じれば、該スプール弁30の上流側の高い
油圧がバイパス路35を介してロツク弁37の端
面に作用し、該ロツク弁37をスプリング36の
弾発力に抗して閉じさせる。このようにスプール
弁30が閉じると同時にロツク弁37も閉じるた
め、たとえスプール弁30から油がリークして
も、この油はロツク弁37にてアクチユエータ3
4側へのリークを完全に阻止される。この結果、
油室S1と油室S2との連通は完全に遮断され、油圧
シリンダユニツト10……の各ピストンロツド1
3及びこれに保持されるセパレータ14はその上
下動が完全にロツクされ、メインスプリング16
のみが伸縮動し、他方のサブスプリングは機能し
ない。従つて、ダンパーのばね定数はメインスプ
リング16の比較的高いばね定数に等しくなり、
このブレーキング時、或は旋回時の走行安定性が
比較的高く保たれる。
Next, when the vehicle is braking or turning, the actuator 34 is driven to close the spool valve 3.
0, the high oil pressure on the upstream side of the spool valve 30 acts on the end face of the lock valve 37 via the bypass path 35, closing the lock valve 37 against the elastic force of the spring 36. Since the lock valve 37 also closes at the same time as the spool valve 30 closes, even if oil leaks from the spool valve 30, this oil will flow through the lock valve 37 to the actuator 3.
Leakage to the 4th side is completely prevented. As a result,
The communication between the oil chamber S1 and the oil chamber S2 is completely cut off, and each piston rod 1 of the hydraulic cylinder unit 10...
3 and the separator 14 held therein are completely locked in their vertical movement, and the main spring 16
Only one sub-spring expands and contracts, and the other sub-spring does not function. Therefore, the spring constant of the damper is equal to the relatively high spring constant of the main spring 16,
Running stability during braking or turning is maintained relatively high.

(考案の効果) 以上の説明で明らかな如く本考案によれば、油
圧シリンダユニツトの油室とアキユームレータの
油室との連通を開閉弁とロツク弁とで二重に遮断
するようにしたため、当該ばね定数可変型ダンパ
ーはその本来の機能を完全に発揮することができ
るようになる。。
(Effect of the invention) As is clear from the above explanation, according to the invention, communication between the oil chamber of the hydraulic cylinder unit and the oil chamber of the accumulator is doubly blocked by the on-off valve and the lock valve. , the variable spring constant damper can fully demonstrate its original function. .

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案に係るばね定数可変型ダンパーの
破断側面図である。 尚、図面中、1はシリンダ、2はピストンロツ
ド、10は油圧シリンダユニツト、14はセパレ
ータ、16はメインスプリング、17は連通路、
20はアキユームレータ、30はスプール弁、3
5はバイパス路、36はスプリング、37はロツ
ク弁、S1,S2は油室である。
The drawing is a cutaway side view of a variable spring constant damper according to the present invention. In the drawings, 1 is a cylinder, 2 is a piston rod, 10 is a hydraulic cylinder unit, 14 is a separator, 16 is a main spring, 17 is a communication passage,
20 is an accumulator, 30 is a spool valve, 3
5 is a bypass passage, 36 is a spring, 37 is a lock valve, and S 1 and S 2 are oil chambers.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上下動自在なセパレータを中間に介してメイン
スプリングとサブスプリングを直列に配置し、上
記セパレータを油圧シリンダユニツトに保持せし
め、該油圧シリンダユニツトを連通路を介してア
キユームレータに連通するとともに、上記連通路
の中間に該連通路を開閉すべき開閉弁を介設して
成るばね定数可変型ダンパーにおいて、前記開閉
弁の上流側と下流側を結ぶバイパス路を設けると
ともに、該バイパス路中に差圧で作動し、開閉弁
の閉時に閉じるロツク弁を介設したことを特徴と
するばね定数可変型ダンパー。
A main spring and a sub-spring are arranged in series with a vertically movable separator in between, the separator is held in a hydraulic cylinder unit, the hydraulic cylinder unit is communicated with the accumulator via a communication passage, and In a variable spring constant type damper that includes an on-off valve that opens and closes the communication passage interposed in the middle of the communication passage, a bypass passage connecting the upstream side and the downstream side of the on-off valve is provided, and a differential is provided in the bypass passage. A variable spring constant damper that is actuated by pressure and is equipped with a lock valve that closes when the on-off valve is closed.
JP6888784U 1984-05-11 1984-05-11 Variable spring constant damper Granted JPS60180616U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6888784U JPS60180616U (en) 1984-05-11 1984-05-11 Variable spring constant damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6888784U JPS60180616U (en) 1984-05-11 1984-05-11 Variable spring constant damper

Publications (2)

Publication Number Publication Date
JPS60180616U JPS60180616U (en) 1985-11-30
JPH0323367Y2 true JPH0323367Y2 (en) 1991-05-22

Family

ID=30604044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6888784U Granted JPS60180616U (en) 1984-05-11 1984-05-11 Variable spring constant damper

Country Status (1)

Country Link
JP (1) JPS60180616U (en)

Also Published As

Publication number Publication date
JPS60180616U (en) 1985-11-30

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