JPS58211043A - Hydraulic damper - Google Patents
Hydraulic damperInfo
- Publication number
- JPS58211043A JPS58211043A JP9233682A JP9233682A JPS58211043A JP S58211043 A JPS58211043 A JP S58211043A JP 9233682 A JP9233682 A JP 9233682A JP 9233682 A JP9233682 A JP 9233682A JP S58211043 A JPS58211043 A JP S58211043A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- valve
- chamber
- oil
- piston
- 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.)
- Granted
Links
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
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は減衰力を運転条件に応じて自由に調整で鳶るよ
うにした油圧緩衝器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic shock absorber whose damping force can be freely adjusted according to operating conditions.
車両の油圧緩衝器に要求される減衰特性は、運転条件に
応じて多様に変化するのであるが、通常の油圧緩衝器で
は予め設定された固定的な特性しか附与できない。The damping characteristics required of a vehicle's hydraulic shock absorber vary in a variety of ways depending on driving conditions, but ordinary hydraulic shock absorbers can only provide preset fixed characteristics.
そこで本出願人によシ、特願昭56−55213号とし
て、減衰バルブの開弁圧を電磁ソレノイドの励磁吸着力
によシ増減させ、減衰特性を外部からの電流値に応じて
任意に変化させるようにした油圧緩衝器が提案された。Therefore, the present applicant proposed in Japanese Patent Application No. 56-55213 that the opening pressure of the damping valve is increased or decreased by the excitation attraction force of the electromagnetic solenoid, and the damping characteristics are arbitrarily changed according to the external current value. A hydraulic shock absorber was proposed.
ところが、この場合、ピストン部に設けた減衰バルブを
電磁ソレノイドで制御している関係上、ソレノイドコイ
ルに対する配線をぎストンロッドを貫通して行う必要が
あり、またぎストン部の構造に大幅な改造が要求される
こともあって、実用的には耐久性、組立性、コストアッ
プなど、改良すべき問題が多かった。However, in this case, since the damping valve installed in the piston is controlled by an electromagnetic solenoid, the wiring for the solenoid coil must pass through the straddle rod, which requires a significant modification to the structure of the straddle rod. Due to the demand, there were many practical problems that needed to be improved, such as durability, ease of assembly, and increased cost.
本発明はかかる問題を解決するために提案されたもので
ある。The present invention was proposed to solve this problem.
そこで本発明は、複筒型の油圧緩衝器において、上部油
室と下部油室とを連通するAイブを、シリンダ外周の油
溜室を縦貫して設け、シリンダ底部に励磁電流に応じて
開弁圧が比例的に変化する電磁減衰弁を設け、該減衰弁
を伸側作動時にノJ?イブを介して流れ出る作動油を通
過させることによシ、発生減衰力を任意に調整するとと
もに、電磁減衰弁のンレノイドに対する配線を簡略化し
、かつピストンやピストンロッドの改造を不要にしてい
る。Therefore, the present invention provides a double-tube type hydraulic shock absorber with an A-vee that communicates the upper oil chamber and the lower oil chamber, extending vertically through the oil reservoir chamber on the outer periphery of the cylinder, and opening the valve at the bottom of the cylinder according to the excitation current. An electromagnetic damping valve whose valve pressure changes proportionally is provided, and the damping valve is operated on the extension side when the damping valve is operated on the extension side. By passing the hydraulic oil flowing out through the valve, the generated damping force can be arbitrarily adjusted, the wiring for the solenoid of the electromagnetic damping valve is simplified, and there is no need to modify the piston or piston rod.
以下、本発明の実施例を図面にもとづいて説明する。Embodiments of the present invention will be described below based on the drawings.
外筒1の内部にはシリンダ2が同心的に配設され、シリ
ンダ2の内部にはピストン3が摺動自由に収装され、ピ
ストン3の上下に油室6と7を区画形成するとともに、
シリンダ2と外筒1との間に環状の油溜室8を形成する
。A cylinder 2 is arranged concentrically inside the outer cylinder 1, and a piston 3 is housed inside the cylinder 2 so as to be freely slidable, and oil chambers 6 and 7 are defined above and below the piston 3.
An annular oil reservoir chamber 8 is formed between the cylinder 2 and the outer cylinder 1.
ピストン3のピストン算ツド4は、シリンダ上部の軸受
部5を貫通して外部′\突出する。The piston head 4 of the piston 3 passes through a bearing 5 in the upper part of the cylinder and projects to the outside.
ピストン3には圧側作動時にのみ開いて上下の油室6と
7を連通ずるチェック弁19が介装される。A check valve 19 is installed in the piston 3, which opens only when the piston is operated on the pressure side to communicate the upper and lower oil chambers 6 and 7.
一方、シリンダ2の下部にはペースノJ )レブ13が
設けられ、このペースバルブ13は、シリンダ2の内周
に取付けたペースグレート24に、伸側作動時にのみ開
くチェック弁21と、圧側作動時にたわんで減衰力を発
生する圧側減衰弁22が取付けられる。On the other hand, a pace valve 13 is provided at the bottom of the cylinder 2, and this pace valve 13 has a pace grate 24 attached to the inner circumference of the cylinder 2, and a check valve 21 that opens only when operating on the rebound side, and a check valve 21 that opens only when operating on the compression side. A compression side damping valve 22 that generates damping force by bending is attached.
このペースバルブ13の下方には電磁減衰弁12が支持
軸23に取付けられた状態で、同軸的に配設される。An electromagnetic damping valve 12 is coaxially disposed below the pace valve 13 and is attached to a support shaft 23 .
電磁減衰弁12は支持軸23に挿入固着したボビン15
にコイル14が巻回されるとともに、メビン15の上面
に磁性材料でつくられた弁口17をもつシート部16が
取シ付けられ、このシート部16に同様に磁性材料でつ
くられたノ々ルブグレート18が圧着する。The electromagnetic damping valve 12 has a bobbin 15 inserted and fixed to the support shaft 23.
A coil 14 is wound around the coil 14, and a seat portion 16 having a valve port 17 made of a magnetic material is attached to the upper surface of the mebin 15. Lube grate 18 is crimped.
バルブプレート18は前記ペースグレート24とボビン
15との間で挾み付けられ、シート部16に密着保持さ
れる。The valve plate 18 is sandwiched between the pace plate 24 and the bobbin 15 and held in close contact with the seat portion 16.
これらペースバルブ13と電磁減衰弁12の間の弁室2
5は、シリンダ2に設けた通口20を介して油溜室8と
連通している。The valve chamber 2 between the pace valve 13 and the electromagnetic damping valve 12
5 communicates with the oil reservoir chamber 8 via a port 20 provided in the cylinder 2.
そして、上記上部油室6の上方において、シリンダ2に
は通口10が設けられ、同様に下部油室6の電磁減衰弁
12の上流側に位置してシリンダ2に通口11が形成さ
れ、これら通口10と11とは油溜室8の内部を縦貫す
る・ぐイブ9を介して連結されるのでおる。A vent 10 is provided in the cylinder 2 above the upper oil chamber 6, and a vent 11 is similarly formed in the cylinder 2 located upstream of the electromagnetic damping valve 12 in the lower oil chamber 6. These ports 10 and 11 are connected via a pipe 9 that runs vertically through the interior of the oil reservoir chamber 8.
上記電磁減衰弁12のコイル14のリード線27は、シ
リンダ2の底部キャップ29に貫通した通孔26に挿通
され、かつ充填材27によシ油密的に封止されている。The lead wire 27 of the coil 14 of the electromagnetic damping valve 12 is inserted into a through hole 26 penetrating the bottom cap 29 of the cylinder 2, and is oil-tightly sealed by a filler 27.
以上のように構成され、次に作用を説明すると、ピスト
ンロッド4がシリンダ2の内部へ進入する圧側作動時に
は、拡大する上部油室6に下部油室7からの作動油がチ
ェック弁19を介して流入するとともに、ピストンロッ
ド4の侵入体積分の作動油はペースバルブ13の圧側減
衰弁22を押し拡いて弁室25から通口20を経て油溜
室8へと流れ込む。The structure is constructed as described above, and its operation will be explained next. During the pressure side operation in which the piston rod 4 enters the inside of the cylinder 2, hydraulic oil from the lower oil chamber 7 flows into the expanding upper oil chamber 6 via the check valve 19. At the same time, the hydraulic oil corresponding to the intrusion volume of the piston rod 4 expands the pressure side damping valve 22 of the pace valve 13 and flows from the valve chamber 25 into the oil reservoir chamber 8 via the passage 20.
なおこのとき上部油室6とt4イf9を介して連通ずる
電磁減衰弁12は、閉弁保持されるため、ノ平イア″9
を経由して作動油が流入することはない。At this time, the electromagnetic damping valve 12, which communicates with the upper oil chamber 6 via t4 and f9, is kept closed.
Hydraulic oil does not flow through the
したがって圧側作動時の減衰力は、ペースバルブ13に
よってのみ発生する。Therefore, the damping force during compression side operation is generated only by the pace valve 13.
これに対して、ピストンロッド4が抜は出す伸側作動時
には、土部油室6が縮少して下部油室7が拡大する。On the other hand, during the expansion side operation in which the piston rod 4 is pulled out, the Dobe oil chamber 6 contracts and the lower oil chamber 7 expands.
ピストン3に設けた圧側チェック弁19は閉弁保持され
るため、上部油室6の作動油はノ4イグ9を介して電磁
減衰弁12に流れ込み、バルブグレート18をたわませ
ながら弁口17よシ弁室25へと流出するのであシ、こ
のときバルブグレート18のたわみ抵抗に応じた減衰力
が発生する。Since the pressure side check valve 19 provided on the piston 3 is kept closed, the hydraulic oil in the upper oil chamber 6 flows into the electromagnetic damping valve 12 via the nozzle 4 ignition 9, and the valve port 17 is deflected while the valve grate 18 is bent. Since it flows out into the valve chamber 25, a damping force corresponding to the deflection resistance of the valve grate 18 is generated at this time.
ところでこのバルブプレート18はシート部16が磁化
されると、これによる吸着力が閉弁方向に働くため、減
衰力は吸着力に比例して増大する。By the way, when the seat portion 16 of the valve plate 18 is magnetized, the resulting attraction force acts in the valve closing direction, so the damping force increases in proportion to the attraction force.
シート部16はソレノイドコイル14に対する励磁電流
に比例して磁化され、その吸着力を増加するため、結局
開弁特性はソレノイド励磁電流に比例して変化するので
ある。The seat portion 16 is magnetized in proportion to the excitation current applied to the solenoid coil 14, increasing its attractive force, so that the valve opening characteristic ultimately changes in proportion to the solenoid excitation current.
例えば、車両の高速走行時など励磁電流を増加して減衰
力を高めてやれば、高速運転時の操安性が向上するし、
低速の市街地走行時などに逆に励磁力を弱めることによ
シ、減衰力を小さくして乗心地を改善できるのである。For example, if the excitation current is increased to increase the damping force when the vehicle is running at high speeds, handling stability at high speeds will be improved.
Conversely, by weakening the excitation force when driving at low speeds around town, it is possible to reduce the damping force and improve ride comfort.
なお、これらの制御については、運転条件を検出するセ
ンサからの信号にもとづいてマイクロコンピュータなど
によυ、最適に励磁電流をコントに一ルすればよい。For these controls, the excitation current may be optimally controlled by a microcomputer or the like based on signals from sensors that detect operating conditions.
以上のように本発明によれば、運転条件に応じて伸側減
衰力を自由に制御でき、操安性や乗心地の改善がはかれ
る一方、電磁減衰弁はシリンダ下部に固定されるため、
ソレノイドコイルに対する配線が容易となり、またピス
トンやピストンロッドは既存のものをそのまま用いるこ
とができ、生産性や組立性がよく、さらにコストダウン
がはかれるなど実用的価値がすこぶる高い。As described above, according to the present invention, the rebound damping force can be freely controlled according to the driving conditions, improving steering stability and ride comfort, while the electromagnetic damping valve is fixed to the lower part of the cylinder.
Wiring to the solenoid coil is easy, the existing piston and piston rod can be used as is, productivity and assemblage are good, and costs are reduced, so it has great practical value.
図面は本発明の実施例を示す断面図である。
1・・・外筒、2・・・シリンダ、3・・・ピストン、
4・・・ピストンロッド、6,7・・・油室、8・・・
油溜室、9・・・パイプ、10.11・・・通口、12
・・・電磁減衰弁、13・・・ペースバルブ、14・・
・ソレノイドコイル、16・・・シー)部、18・・・
バルブプレート、20・・・通口。
特許出願人 萱場工業株式会社The drawings are cross-sectional views showing embodiments of the present invention. 1... Outer cylinder, 2... Cylinder, 3... Piston,
4... Piston rod, 6, 7... Oil chamber, 8...
Oil sump chamber, 9... Pipe, 10.11... Vent, 12
...Electromagnetic damping valve, 13...Pace valve, 14...
・Solenoid coil, 16... sea) section, 18...
Valve plate, 20...port. Patent applicant Kayaba Kogyo Co., Ltd.
Claims (1)
対してピストンを摺動自由に収装し、シリンダ内部のピ
ストンの上下面に油室を、外筒とシリンダの間に油溜室
を画成した複筒型油圧緩衝器において、上記ピストンに
圧側でのみ開いて上下の油室を連通ずるチェック弁を設
ける一方、下部油室の底部に位置して励磁電流に応じて
開弁圧が比例的に増減する電磁減衰弁を設け、上部油室
と下部油室の電磁減衰弁上流との間を連通するノソイブ
を、油溜室を縦貫して配設したことを特徴とする油圧緩
衝器。A cylinder is fixed concentrically inside the outer cylinder, a piston is housed in the cylinder so that it can slide freely, an oil chamber is provided on the upper and lower surfaces of the piston inside the cylinder, and an oil reservoir chamber is provided between the outer cylinder and the cylinder. In the double-tube hydraulic shock absorber, the piston is equipped with a check valve that opens only on the pressure side and communicates the upper and lower oil chambers, and a check valve that is located at the bottom of the lower oil chamber and adjusts the opening pressure according to the excitation current. A hydraulic shock absorber characterized in that an electromagnetic damping valve that increases and decreases proportionally is provided, and a nosobib that communicates between the upper oil chamber and the upstream side of the electromagnetic damping valve in the lower oil chamber is arranged vertically through the oil reservoir chamber. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9233682A JPS58211043A (en) | 1982-05-31 | 1982-05-31 | Hydraulic damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9233682A JPS58211043A (en) | 1982-05-31 | 1982-05-31 | Hydraulic damper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58211043A true JPS58211043A (en) | 1983-12-08 |
JPH023063B2 JPH023063B2 (en) | 1990-01-22 |
Family
ID=14051547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9233682A Granted JPS58211043A (en) | 1982-05-31 | 1982-05-31 | Hydraulic damper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58211043A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007506057A (en) * | 2003-09-22 | 2007-03-15 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | Adjustable damper with valve mounted in series |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2530132Y2 (en) * | 1991-07-08 | 1997-03-26 | 利春 高橋 | One-touch mounting vent |
-
1982
- 1982-05-31 JP JP9233682A patent/JPS58211043A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007506057A (en) * | 2003-09-22 | 2007-03-15 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | Adjustable damper with valve mounted in series |
Also Published As
Publication number | Publication date |
---|---|
JPH023063B2 (en) | 1990-01-22 |
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