JPS59187128A - Hydraulic shock absorber - Google Patents
Hydraulic shock absorberInfo
- Publication number
- JPS59187128A JPS59187128A JP5891783A JP5891783A JPS59187128A JP S59187128 A JPS59187128 A JP S59187128A JP 5891783 A JP5891783 A JP 5891783A JP 5891783 A JP5891783 A JP 5891783A JP S59187128 A JPS59187128 A JP S59187128A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- piston rod
- oil chamber
- adjuster
- seal
- 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)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、自動＠埠の正体と車軸部とのｌ１ｌｌ’ｌ
ｖｃ配設さｔ′１．小、破衰力が運整可能な油圧綴衝器
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides the following features:
vc arranged t'1. This invention relates to a hydraulic binding machine with small and adjustable breaking force.
従来から、区画の走行粂件に応じて、自動的にあるいは
手動操作により、コンドローラン辿じてピストンロッド
内部Ｖｒ取付けたモータや位置検出センサ等カー瞥子駆
動装置で調整子Ｙ所？用ＩＷ同転させ、該ｆＡ幣子に設
けた切欠またはぎ連孔を、スタッドに設けた夕数のオリ
フィスのうちの一つのオリフィスと一致させ、これら切
欠またはｆ通孔と所定のオリフィスとを連通させて、ピ
ストンにて隔成されたシリンダ内σ〕２つの作動油室間
に、所定の流逼抵抗ン以って作動油ン流動させ、もって
、所定の減哀力ｆＡ幣が行えるようにした油圧緩＃器が
知られている。Conventionally, depending on the traveling condition of the compartment, the adjuster Y position is automatically or manually controlled by a motor, position detection sensor, etc. installed inside the piston rod, automatically or manually. Rotate the IW at the same time, align the notch or joint hole provided in the fA thread with one orifice of the number of orifices provided in the stud, and connect these notches or f through hole with the predetermined orifice. The hydraulic oil is allowed to flow between the two hydraulic oil chambers in the cylinder separated by the piston with a predetermined flow resistance, so that a predetermined reduction force fA can be achieved. Hydraulic looseners are known.
本発明はこのような油圧緩衝器において、前記調整子駆
動装置と調整子の間を射出するオイルシールの耐久性の
同上＃ン図ろことができるよ’＋ＶＣしたものである。In such a hydraulic shock absorber, the present invention can improve the durability of the oil seal injected between the regulator drive device and the regulator.
本発明？説明する前に先ず、従来のＩ戚衰力町変型σ）
油圧繰Ｉ！ｌｉＪ器の一般的な構造ケ第１．２図に基づ
いて説明イろ。１ゾ１において１は作動油ｌ充填したシ
リンダ、２は前記シリンダ１の外周ン囲繞してその内部
に、作動油のリザーバ室３ン形成ｆろ外筒で、Ａｉ前記
クりンダ１内部は、その底部で前記リザーバ′￥３と連
通している。４は前記シリンダ１σ）一端π備えら几た
ガイド部材５に支持さねゐと共Ｖｒ前記外筒２の一端ン
封ＩＬ的に貫通して突出でろピストンロッドである。６
は前記シリンダ１内に１習と１Ｕ１自在ｖｒｉ匝Ｉ山さ
れ、該シリンダ】内部を上部、上部の各油室７．８に隔
成′″ｔ′るピストンで、該ピストン６には、上下面の
Ｗ通孔９，１ｎｆｆｌそれぞれ一方づつ乞障って、これ
ら貫通孔９．１０を弁して前記上部、下部の谷油室７．
８１川を＋を換部＠ｆ６作動液に流通抵抗ン生じしめろ
、プレートバルブからなる減衰力発生手段１１．１２が
備えらルている。Invention? Before explaining, first of all, the conventional
Hydraulic pressure I! The general structure of a LiJ device will be explained based on Figure 1.2. 1 In 1, 1 is a cylinder filled with hydraulic oil, 2 is an outer cylinder that surrounds the outer periphery of the cylinder 1 and forms a hydraulic oil reservoir chamber 3 therein, and the inside of the cylinder 1 is , communicates with the reservoir '3 at its bottom. Reference numeral 4 designates a piston rod which protrudes through the cylinder 1σ) and is supported by a rigid guide member 5 having one end π, and extends through the outer cylinder 2 at one end. 6
is a piston mounted in the cylinder 1 and separated into upper and upper oil chambers 7.8; The W through holes 9 and 1nffl on the lower surface are closed one by one, and these through holes 9 and 10 are valved to open the upper and lower valley oil chambers 7.
A damping force generating means 11 and 12 consisting of a plate valve is provided to create a flow resistance to the working fluid at the exchange part @f6.
１３は全体として筒状に形成され、一端が前記下部油室
８に開口するスタッドで、このスタッド１３の上端部１
３ａは、前記ピストンロッド４の端部匠形成した筒状部
４ａ内に挿入さ几て、この筒状部４ａの外周に螺合した
、ナツト部材】４によって前記ピストンロッド４に固着
さ几ており、その下端部１３ｂＫ＆！、ナツト１５によ
ってピストン６ン固着ｆることにより、前記ピストンロ
ッド４とピストン６とを連繋している。また、このスタ
ッド１３の筒壁１３ｃＫ＋！、第２図ｆａｔ 、 ｉｈ
ｌ Ｋ示すように、互いに異なる開口径？もって円周方
向略等間隔に轡数個配役さｎだオリフィス１６゜１７が
、軸方向に所定間隔をもって上下二列設けらねでいる。Reference numeral 13 denotes a stud which is formed into a cylindrical shape as a whole and whose one end opens into the lower oil chamber 8.
3a is inserted into a cylindrical portion 4a formed at the end of the piston rod 4, and is fixed to the piston rod 4 by a nut member 4 screwed onto the outer periphery of the cylindrical portion 4a. , its lower end 13bK&! , the piston rod 4 and the piston 6 are connected by fixing the piston 6 with a nut 15. Also, the cylindrical wall 13cK+ of this stud 13! , Figure 2 fat, ih
l Different aperture diameters from each other as shown in K? A number of orifices 16 and 17 are arranged at approximately equal intervals in the circumferential direction, and are arranged in two rows, upper and lower, at predetermined intervals in the axial direction.
これらオリフィス１６．１７は、筒壁１３ｃσ）外周［
設けた償状溝１８と該環状溝１８ｖｃＩ＋１［１１４］
ｆ／：、よ’ｌ ＶＣ前記ピストンロッド４の筒状部４
ａに設けられた連通孔１９とをそ几ぞｎ介して、ｔｌＴ
Ｍビ上部油４７π４直している。つまり、こ扛らオリフ
ィス１６．１７ン設けた直壁１３ｃは、ピストンロッド
４の筒状部４ａ内部に挿入されているのであ恒
猷前記スタッド１３の筒状内部には、後記ｉゐ調整子駆
動装置のモータにより回転駆動される調整子２０か回動
自在ｆ収容されており、この調整子２ｎＴｌ（は、前記
下部油室８に向って開口する軸方向孔２１及び、該軸方
向孔２１とｉｎ記スタッド１３のオリフィス１６．１７
のそｒｂソれ一つずつとに選択的π連通可能な連通孔２
２．２３が形成さ扛ている。These orifices 16, 17 are formed on the outer periphery of the cylinder wall 13cσ) [
The provided compensation groove 18 and the annular groove 18vcI+1 [114]
f/:,yo'l VC Cylindrical portion 4 of the piston rod 4
tlT through the communication hole 19 provided in a.
I am fixing the oil on the top of the M-V 47π4. In other words, since the straight wall 13c provided with these orifices 16 and 17 is inserted into the cylindrical part 4a of the piston rod 4, the cylindrical part 13 of the stud 13 has an adjuster i, which will be described later. A rotatable adjuster 20 rotatably driven by the motor of the drive device is housed, and the adjuster 2nTl (includes an axial hole 21 opening toward the lower oil chamber 8 and an axial hole 21). and in the orifice of stud 13 16.17
Communication hole 2 capable of selective π communication with each rb
2.23 is formed.
前記調整子２０の軸方向孔２１内部には、両端開放の筒
状に形成さｎた筒状部材２４が挿入固定さｎており、該
筒状部材２４の筒壁は、前記調整子２０に設けられ１こ
連通孔２２．２３のうち、下４１１１の連通孔２３のみ
２覆５位置に挿入配置さｎている。その筒壁には、％ｉ
ｆ前記述通孔２２．２３のうちの下１ｕ１１の連通孔２
３のみに連通−ｆゐ通孔２５か設けらｎていゐ。２５ａ
は前記筒状部材２４ン調整子２０の軸方向孔２１内部に
挿入固定ｆる際に、前記連通孔２３と通孔２５との位置
決め欠不要にするために、筒状部材２４の外周に形成さ
れた環状溝である。また、この面状部材２４の上部開放
端には、チェックスプリング２６とチェックプレート２
７からなるチェックパルプ２８が備えろルており、盾１
潔にあっては、該開放端を閉塞して前記オリフィス１６
及び連通孔２２ン西って上部、下部の各油室７，８間を
流動する作動油の流通を駆出している。A cylindrical member 24 formed in a cylindrical shape with both ends open is inserted and fixed inside the axial hole 21 of the adjuster 20, and the cylindrical wall of the cylindrical member 24 is connected to the adjuster 20. Of the one communicating hole 22,23 provided, only the lower communicating hole 23 is inserted in two positions. On the wall of the cylinder, %i
f Communication hole 2 of the lower 1u11 of the previously described communication holes 22.23
A communication hole 25 is provided only in 3. 25a
is formed on the outer periphery of the cylindrical member 24 in order to eliminate the need for positioning the communicating hole 23 and the through hole 25 when inserting and fixing the cylindrical member 24 into the axial hole 21 of the adjuster 20. This is an annular groove. Further, a check spring 26 and a check plate 2 are provided at the upper open end of the planar member 24.
Check pulp 28 consisting of 7 is provided, and shield 1
When cleaning, the open end is closed and the orifice 16 is closed.
The west side of the communication hole 22 allows hydraulic oil to flow between the upper and lower oil chambers 7 and 8.
２９は前記調整子２０ケ［ＯＪ転操作する調整子駆動装
置道であり、該調整子駆動装置２９はピストンロッド４
の筒状部４ａ内に収容されたマイクロモータ３０、位置
検出センサ３１等の電装部品及び減速機３２乞備えてい
て、前記位置検出センサ３１で調整子２０の位置乞瑛出
し、図外のコントローラで前記マイクロモータ３０及び
減速機３２を弁してｉ１Ｍ整子２Ｏを所定の角度回転さ
せ、該調整子２ｎＫａけな連通孔２２．２３ｉスタツド
１３のオリフィス１６．１７のいずルか一方と４通させ
て、減衰力の＝Ａ整ン行うようになっている。Reference numeral 29 denotes an adjuster drive device for operating the 20 adjusters [OJ], and the adjuster drive device 29 is connected to the piston rod 4.
A micromotor 30 housed in a cylindrical portion 4a, electrical components such as a position detection sensor 31, and a speed reducer 32 are provided. Then, the micro motor 30 and reducer 32 are operated to rotate the i1M armature 20 by a predetermined angle, and the adjuster 2nKa is connected to one of the orifices 16 and 17 of the small communication hole 22, 23i and the stud 13. By letting it pass through, the damping force is adjusted to =A.
３３は前記調整子駆動装置２９と、０６１脩子２０の間
、４体的１７ｍは、調整子側ｖＩ装装置２９の位置検出
センサ３１と調整子２０のフランジ部２ｎａとの＋ｉ４
］に形成されたシール収容部、３４はシール収容部３３
に収容さｎたオイルシールであり、該オイルシール３４
はリング状に形成さねていて、内周１１１１のリップ部
３４ａが調整子２０の上端部外周に摺接して、位置検出
センサ３１と調整子２００間をシールｆろようになって
いる。３５にオイルシール３４と前記フランジ部２０ａ
の上面の間に弁在さｎたテフロン等の低摩擦板、３６は
前記フランジ＠ ２ ｎ ａの下面とスタッド１３の上
端の間のスプリング収容部３７に装着さねていて、前記
調整子２０をオイルシール３４１１１１１に付勢してい
るコイルスプリング、３８は前記ピストンロッド４の外
周に備えられた滓出部材で、この１亭出部材３８は、前
記ガイド部材５の下端面π当４娶してピストンロッド４
の上Ｉ＃ン停上するものである。33 is between the adjuster driving device 29 and the 061 screw 20, and 4 body 17m is +i4 between the position detection sensor 31 of the adjuster side vI mounting device 29 and the flange portion 2na of the adjuster 20.
], 34 is the seal accommodating portion 33
This is an oil seal housed in the oil seal 34.
is formed into a ring shape, and the lip portion 34a of the inner periphery 1111 is in sliding contact with the outer periphery of the upper end portion of the adjuster 20 to form a seal between the position detection sensor 31 and the adjuster 200. 35, the oil seal 34 and the flange portion 20a
A low friction plate 36 made of Teflon or the like is disposed between the upper surfaces of the spring accommodating portion 37 between the lower surface of the flange and the upper end of the stud 13. The coil spring 38 biases the oil seal 3411111, and 38 is a spilling member provided on the outer periphery of the piston rod 4. piston rod 4
This is to stop the top I#.
ｗ丁かろ構成になゐ油圧緩衝器にあっては、矢のη口く
作用ｉろ。ＩＪｌ」ち、ピストン６を伴うピストンロッ
ド４の上下動πより、ピストン６ｖｃ設けた眞衰力発生
手段１１．１２欠弁して上部、下部の各油室７．ｓ：！
ｉに作動油欠置換鑞勤させ、ＩＩＩＥ衰カン得ろうこれ
と同時に、前記した如く、図外のコントローラからの訓
「卸信号ｖｃ基づいてマイクロモータ３０χ弁して調整
子２０を所定角度回転させて、この調整子２０に設けた
連通孔２２．２３とスタッド１３にそれぞれ円周方向に
複数個設けたオリフィス１６．１７のうち所望の開ロ径
ゲ有ｆるオリフィス１６．１７とン連通させろ。これに
より、前記上部、下部の各油室７，８間ケ置換流動する
作動油の一部を、前記調整子２０の連通孔２２゜２３と
合致したオリフィス１６．１７％’弁してバイパス通過
させて所望の姐衰力を得ろ。１０ち、調整子２０を所定
角度回転させて、作動油ンバイパス通過させろオリフィ
ス１６．１７の開ロ径ン通宜選択’ｆることπより所望
の減衰力２得るのである。In the case of a hydraulic shock absorber that has a double-cross configuration, the arrow's opening action will occur. Due to the vertical movement π of the piston rod 4 accompanied by the piston 6, the damping force generating means 11. s:!
At the same time, as mentioned above, a command from the controller (not shown) is sent to the micromotor 30x valve to rotate the regulator 20 by a predetermined angle based on the wholesale signal vc. Then, connect the communication hole 22.23 provided in the adjuster 20 with the orifice 16.17 having the desired opening diameter among the plurality of orifices 16.17 provided in the circumferential direction on the stud 13, respectively. As a result, a portion of the hydraulic oil displacing and flowing between the upper and lower oil chambers 7 and 8 is bypassed through the orifice 16.17%' which matches the communication hole 22 and 23 of the regulator 20. 10. Rotate the adjuster 20 by a predetermined angle to allow the hydraulic oil to pass through the bypass. Select the opening diameter of the orifice 16, 17 to obtain the desired damping force. You gain 2 power.
そこで、いま、ピストンロッド４がピストン６ゲ伴って
上動した場合、下部油室７内が高圧となり、下部油室８
がそれに比較して低圧となる。従って、チェックプレー
ト２７は、上部油室７の圧力により下動して筒状部材２
４の上端開口を閉塞ｆ′る。従って、上部油室７内の作
動油の一部は、ＪＪＩ孔１９からオリフィス１７．４通
孔２３、通孔２５を１１１次曲過して、筒状部材２４の
中９内部を経て、下部油室８内に流入する。Therefore, if the piston rod 4 moves upward with the piston 6, the pressure inside the lower oil chamber 7 becomes high, and the lower oil chamber 8
The pressure will be lower compared to that. Therefore, the check plate 27 is moved downward by the pressure in the upper oil chamber 7, and the cylindrical member 2
The upper end opening of 4 is closed f'. Therefore, a part of the hydraulic oil in the upper oil chamber 7 passes through the orifice 17.4 through hole 23 and through hole 25 from the JJI hole 19, passes through the inside of the inner 9 part of the cylindrical member 24, and then passes through the lower part. It flows into the oil chamber 8.
一方、ピストンロッド４が下動した場合、下部油室８内
が高圧となり、上部油室７内がそｎに比較して低圧とな
る。従って、チェックプレート２７がチェックスプリン
グ２６のばね力に抗して上昇して筒状部材２４の上端開
口χ（硝く。従って、下部油室８内の作動油の一部は、
筒状部材２４の中空内部から、通孔２５、連通孔２３、
オリフィス１７ン順次通る油路及び軸方向孔２１内の筒
状部材２４＋７１中空内部、連通孔２２、オリフィス１
６ケ通る油路の２つσ〕経路を通り、四に連通孔１９ン
通って、と部油室７内に流入する。従って、ピストンロ
ッド４の下動時と比較して流路面積が増７１０ｆること
となるので、その上動時と比較して低いｔｊ、衰力が得
らｎる。On the other hand, when the piston rod 4 moves downward, the pressure in the lower oil chamber 8 becomes high, and the pressure in the upper oil chamber 7 becomes lower than that. Therefore, the check plate 27 rises against the spring force of the check spring 26 to open the upper end of the cylindrical member 24. Therefore, part of the hydraulic oil in the lower oil chamber 8
From the hollow inside of the cylindrical member 24, the through hole 25, the communication hole 23,
The oil passage passing through the orifice 17 in sequence and the cylindrical member 24+71 inside the axial hole 21, the communication hole 22, and the orifice 1
The oil passes through two of the six oil passages, passes through the fourth communication hole 19, and flows into the oil chamber 7. Therefore, since the flow passage area increases by 710f compared to when the piston rod 4 moves downward, a lower tj and damping force can be obtained compared to when the piston rod 4 moves upward.
つまり、ピストンロッド４の上下＠に応じてチェツクバ
ルブ２７ン開閉動作せしめることにより、ピストンロッ
ド４の下動時には、スタッド１３のオリフィス１６．１
７のうちの一方のオリフィス１７のみから作動油を流通
させ、−万、ピストンロッド４の下動時ｖｃは、オリフ
ィス１６．１７の両方から作動油娑流通させ、そｎぞれ
σ〕薦表設カン変化せろことにより、車両用油圧緩衝器
に対して一般的に求めら′ｎゐところの要求、ｋｌＪち
乗心地ン良くするためには縮み方向の陳衰力馨小さくし
、 ・逆に、走行安定性のためＫは伸び方向力陳衰力
馨大きく得ろという要求π対しても、有利にこｎを満足
させることができる。That is, by opening and closing the check valve 27 in accordance with the up and down movement of the piston rod 4, the orifice 16.1 of the stud 13 is opened and closed when the piston rod 4 moves downward.
Hydraulic oil is allowed to flow from only one orifice 17 of 7, and when the piston rod 4 moves downward, hydraulic oil is allowed to flow from both orifices 16 and 17, respectively. Due to the need to change the design, there are demands that are generally not required for vehicle hydraulic shock absorbers. , the requirement π that K should have a large elongation direction force decay force for running stability can be advantageously satisfied.
そして上記の如き構成の油圧緩衝器にあっては、調整子
２０の同転を円滑ｖｒｉろために７一ル収容部３３に潤
滑油？供給して、オイルシール３４のリップ３４ａと調
整子２００間或は低＃際材３５とオイルシール３４のｌ
’ａ”５ ’ｌ潤泄させることが望ましい。In the hydraulic shock absorber having the above structure, lubricant is added to the 7-1 housing portion 33 to ensure smooth rotation of the adjuster 20. between the lip 34a of the oil seal 34 and the regulator 200, or between the low # edge material 35 and the l of the oil seal 34.
'a'5 'l It is desirable to have water excreted.
そこで従来は、Ｘ ２図π示したようにシール収容＋ｆ
ｌＩ３３とコイルスプリング収容部３７ン連通ｆ６油路
３９．４０乞低摩擦材３５と調整子２０のフランジ部２
０δπ設けろ一部、前記コイルスプリング収容部３７の
内周面に一端が開口し、他端が員■記１１ｆｉ＋１方向
孔２１の上面π開口ｆる油路４１を調整子２０Ｆ形成し
、これら油路４１，４ｎ、３９ン弁して、ピストンロッ
ド４の上動時には、上部油室７σ〕作動油の一部？、シ
ール収容部３３に供給、し、ピストンロッド４の下動時
には、下部油室８の作動油の一部ン、シール収容部３３
に供給する構成になっていたため矢に述べろような欠点
があった。Therefore, conventionally, as shown in Figure 2 π, seal accommodation + f
Communication f6 oil passage 39.40 between lI33 and coil spring housing portion 37 Low friction material 35 and flange portion 2 of adjuster 20
An oil passage 41 is formed in the regulator 20F, one end of which is open on the inner circumferential surface of the coil spring accommodating portion 37, and the other end is an opening f of the upper surface of the 11fi+1 direction hole 21. 41, 4n, 39 valves, and when the piston rod 4 moves upward, the upper oil chamber 7σ] Part of the hydraulic oil? , is supplied to the seal housing portion 33, and when the piston rod 4 moves downward, a portion of the hydraulic oil in the lower oil chamber 8 is supplied to the seal housing portion 33.
Because the structure was such that the system was configured to supply a large amount of electricity, it had the drawbacks mentioned above.
（１） ピストンロッド４の上動時には、下動時より
も大きな圧力がオイルシール３４に作用し、リップ３４
ａが強＜ 、Ａ整子２０の外周面に押し付けら′ｒＬる
のでリップ３４ａＩ７）損耗が激しくなり、オイルシー
ル３４σ）耐久性が損ねねる。(1) When the piston rod 4 moves upward, a greater pressure acts on the oil seal 34 than when it moves downward, causing the lip 34 to
Since a is strongly pressed against the outer circumferential surface of the A-shaft 20, the lip 34aI7) will be severely worn out, and the durability of the oil seal 34σ) will be impaired.
＋２１ ’Ｉツブ３４ａと調整子２００間の摩孫抵抗
が増大するために調整子の作動か不確実になると共に、
マイクロモータ３０の負荷が増えるため、該モータ３０
の耐久性が損わｎる。+21 ' Since the friction resistance between the I knob 34a and the regulator 200 increases, the operation of the regulator becomes uncertain, and
Since the load on the micro motor 30 increases, the motor 30
The durability of the product will be impaired.
本発明は上記従来σ】欠点を解消することケ目的として
為さｎたものであり、そσ〕要旨とする構成はシール収
容部に上部油室よりも低圧の下部油室の作動油θ〕み乞
倶給するようにしたことにある。The present invention has been made with the aim of eliminating the above-mentioned drawbacks of the conventional art, and the gist of the invention is to provide hydraulic oil θ in the lower oil chamber, which has a lower pressure than the upper oil chamber, in the seal accommodating portion. This is because we started asking for and giving.
次ｆ本発明乞第３図以下の図面に基づいて説明する。Next, the present invention will be explained based on the drawings shown in FIG. 3 and the following drawings.
においては、シール収容部３３とコイルスプリング収容
部３７を連通ｆる油路３９，４（１を低摩擦材３５と調
整子２０のフランジｆＢ２０ａＫ設けろ一部、前記コイ
ルスプリング収容部３７の内周面に一端が開口し、他端
が調整子２０下方の筒壁１３Ｃσ）内周面π開ｌコ−ｆ
ろ油、烙４２ン、スタッド１３従ってピストンロッド４
の下動時は勿論のこと、下動時も油路４２，４ｎ、３９
ン弁して上部油室７よりも低圧σ〕下部油室８の作動油
の一部のみがシール収容部３３に供給されることｆなり
、オイルシール３４には常Ｋ（ピストンロッド４の上。In this case, the oil passages 39, 4 (1) are provided with the low friction material 35 and the flange fB20aK of the adjuster 20. One end is open, and the other end is the inner circumferential surface π open lcof.
Filter oil, heat 42, stud 13 and piston rod 4
Oil passages 42, 4n, 39 not only when moving downward, but also when moving downward.
Only a part of the hydraulic oil in the lower oil chamber 8 (lower pressure σ than the upper oil chamber 7) is supplied to the seal housing part 33. .
下動時に）下部油室８σ〕低圧が作用し、従来の如くオ
イルシール３４に上部油室７の高圧が作用することはな
いので、そσ）ぷんオイルシール３４の摩耗等ン防止す
ることができるのである。During the downward movement, the low pressure in the lower oil chamber 8σ is applied, and the high pressure in the upper oil chamber 7 is not applied to the oil seal 34 as in the conventional case, so that wear of the oil seal 34 can be prevented. It can be done.
また第５．６図は本発明の第２実施例？示し、該実施例
においては、シール収容部３３とコイルスプリング収容
部３７乞連通する油路３９．４ｆｌケ低摩擦材３５と調
整子２０のフランジ部２０ａに設ける一部、前記コイル
スプリング収容部３７に一端が開口し、他端がスタッド
１３０尚壁１３Ｃ内下面１３ｄとの間に設けらｎた間１
１＠ ４４に開口ｆゐ油路４３ケ、調整子２０に形成し
、こｎら油路４３．４０．３９Ｙ介してＦ部油室８の作
動油の一部？シール収容部３３に供給するようにした場
合？示してい６゜
なお従来例と同一部分ＶＣは同−符号馨付して電標ｆる
説明を’ｆｆｉ’ １１１８ｆる。Also, is Figure 5.6 a second embodiment of the present invention? In this embodiment, the oil passage 39.4 fl that communicates with the seal accommodating portion 33 and the coil spring accommodating portion 37 is a portion provided on the flange portion 20a of the low friction material 35 and the adjuster 20, and the coil spring accommodating portion 37. One end is open and the other end is provided between the stud 130 and the inner lower surface 13d of the wall 13C.
1 @ 44 has an opening f2 oil passage 43, which is formed in the regulator 20, and a part of the hydraulic oil in the oil chamber 8 of the F part flows through these oil passages 43, 40, and 39Y. What if it is supplied to the seal housing section 33? Note that portions VC that are the same as those of the conventional example are given the same reference numerals and the explanations are given as 'ffi' 1118f.
以上、要するに本発明は、作動油を充禰したシリンダと
、このシリンダの−４を封止的ＶＣ貫通して延びるピス
トンロッドと、前記シリンダｌ’［ｍ動自在＃に嵌挿し
てこのシリンダ内部馨上部油室と下部油室との二室に隔
成ｆろと共に、前記上部油室と下部油室とσ〕二室間に
作動油の制限的置換流動馨許容ｆる減衰カ発生手段馨備
えたピストンと、♀休として筒状であって一端が前記下
部油室に開口しかつ、簡璧ｒ１ 乱いに溪なる開口径馨
もって円周方向に傍数個配ｅさ１また、前記上邪油寥π
連曲オる上ドニタ１Ｊｆ７）オリフィス？博し、前記ピ
ストンロッドとピストンとを連ｇ？６スタツドと、この
スタッドの筒状内部に回＠町ＨＦＫ嵌挿され、前記下部
油室に向って開口ｆる則方向孔及び、該軸方回孔内と前
記二列のオリフィスσ〕各列ＶｃおけろいずｔＬか−と
ン選択的に連通町卯な上下２つσ）連通孔’ａｌ’何す
る調整子と、この調修子σ〕軸方向孔内に前記谷連通孔
の５ち下（１１１＋の連、１！５孔のみ２涜って挿入さ
れ、かつ、こθ］下側の述曲孔のみと連通ｆゐ連孔欠筒
壁ｖｃ穿設した、両端開放の箇状部任と、この筒状部材
の上ｊｉ１１開放端に備えら肚、補記ピストンロッドの
上下＠に応じて該開放端を開閉ｆるチェックバルブと、
前記調整子ン回転憧作ｆゐモータや位置検出センサ等の
邂装部品を備えた１Ａ整子枢動装喧と、この調帯子駆劾
装置と前記調整子σ）間ニ設けらｎたシール収容部と、
こび）シール収容部内に在って前記調整子駆！ｌ！Ｉ］
装置と調整子の間を刊１．ｈ ｆ ６オイルシールとを
有でる油圧緩衝器において、＋ｊｉ前記シール収容部Ｋ
’Ｆ部油室の作動油のみ？供給−１６油烙ン形成した
ので仄に述べるような効果かｆｉ−）る。In summary, the present invention includes a cylinder filled with hydraulic oil, a piston rod extending through the -4 of this cylinder through a sealing VC, and a piston rod that is inserted into the cylinder l' In addition to separating two chambers, an upper oil chamber and a lower oil chamber, there is also a damping force generating means that allows limited displacement of hydraulic oil between the two chambers. A plurality of pistons are provided, each having a cylindrical shape with one end opening into the lower oil chamber, and having an opening diameter of a simple radius, and several pistons disposed in the circumferential direction. Upper evil oil π
Renkyoku Oru Ue Donita 1Jf7) Orifice? Is the piston rod and piston connected together? 6 studs, an axial hole which is fitted into the cylindrical interior of this stud and opens toward the lower oil chamber, and each row of orifices σ in the axial hole and the two rows. Vc holder tL - Selectively connect two upper and lower holes σ) What is the communication hole 'al'? Adjuster and this adjuster σ] 5 holes of the valley communication hole in the axial hole. Lower (111+ series, only holes 1!5 are inserted 2 times, and this θ) A section with open holes at both ends, communicating with only the lower bent holes f, and a continuous hole cutout wall vc. and a check valve provided at the upper open end of this cylindrical member, which opens and closes the open end according to the up and down movements of the piston rod;
A 1A shifter pivoting device equipped with external parts such as a motor for rotating the regulator and a position detection sensor, and a 1A shifter pivoting device provided between the regulator and the regulator σ). A seal housing part;
(difficult) The regulator is located inside the seal housing! l! I]
1. Between the device and the regulator. h f In a hydraulic shock absorber having 6 oil seals, +ji the seal housing part K
'Only the hydraulic oil in the F section oil chamber? Since the supply-16 oil flame was formed, the effect as described below is obtained.
（１） 従来σ〕如くピストンロッドの上動４におい
ても下部油室、の高圧がオイルシールｖｃ作用すること
はなく、従って従来σ）如く不必要に強くオイルシール
？調整子等に押し付けることがなし・ので、オイルシー
ルぴ）損耗は可及的に防上さｎて、その耐久性が同上す
る。(1) The high pressure in the lower oil chamber does not act on the oil seal VC even during the upward movement of the piston rod 4 as in the conventional σ], so the oil seal is unnecessarily strong as in the conventional σ)? Since there is no need to press the oil seal against the adjuster, etc., wear and tear on the oil seal is prevented as much as possible, and its durability is increased.
１２１ オイルシールと調整子間の摩擦抵抗が減少す
るため、調整子の作動が円滑になると共に調整子駆動用
のモータの負荷が減少し、該モータの耐久１生？回上さ
せることができる。121 Since the frictional resistance between the oil seal and the adjuster is reduced, the operation of the adjuster becomes smoother, and the load on the motor for driving the adjuster is reduced, increasing the durability of the motor. It can be increased.
第１図は従来の陳衰力町変型の油圧緩衝器？示す断面図
、第２図ａはピストンロッドσ】上旬時におけろ要部σ
〕拡大断面図、第２図すはピストンロ図ａは第３図σ）
ａ−ａ線断面図、羊４甲りは第３図σ〕ｈ−ｂｓ断面図
、第５図は本発明の４２実施例の要部の拡大ｆｊＴ面図
、４６図は第５図σ１ａ−ａ線断面図である。
１・・・シリンダ、４・・・ピストンロッド、６・・・
ピストン、７・・・下部油室、８・・・下部油室、１１
．１２・・・＠哀力発生手段、１３・・・スタッド、＋
３ｃ・・・筒壁、１６．１７・・・オリフィス、２ｏ・
・・調整子、２１′°゛軸方向孔、ｚ２．ｚ３・・・連
通孔、２４・・・筒状部材、２５・・・油孔、２８・・
・チェックバルブ、２９・・・調整子枢動装置ｔ、３０
・・・モータ、３１・・・位Ｉｔ検出センサ、３３・・
・シール収容ｔｆｌｌ 、３４・・・オイルシール、４
２・・・油路。
第３図
１ｊ
第４図（ａ） 第４図（ｂ’）
第５図
ｊ
第６図Is Figure 1 a conventional modified hydraulic shock absorber? The cross-sectional view shown in Fig. 2a is the main part σ of the piston rod σ at the beginning of the piston rod.
] Enlarged cross-sectional view, Fig. 2 and piston view a are Fig. 3 σ)
46 is a cross-sectional view taken along line a-a, sheep 4 is shown in figure 3 [σ]h-bs cross-sectional view, FIG. It is an a-line sectional view. 1...Cylinder, 4...Piston rod, 6...
Piston, 7... Lower oil chamber, 8... Lower oil chamber, 11
．． 12...@ Sorrow generating means, 13... Stud, +
3c... Cylinder wall, 16.17... Orifice, 2o.
... Adjuster, 21'° axial hole, z2. z3... Communication hole, 24... Cylindrical member, 25... Oil hole, 28...
・Check valve, 29...Adjustor pivot device t, 30
... Motor, 31... It detection sensor, 33...
・Seal housing tflll, 34...Oil seal, 4
2...Oil road. Figure 3 1j Figure 4 (a) Figure 4 (b') Figure 5 j Figure 6
Claims (1)
の−＆Ｊ ’ｆ封１ヒ的に貫通して延びるピストンロッ
ドと、 ＋Ａｉｌ記シリンダ内ｖｃ摺勅。自任にイ秋→
市してこのシリンダ内部を土部油室と下部油￥と０）二
室ｆ隔成ｆ＾と共に、前記土部油室と下部油室とσ〕二
堅間π作１肋油の制限的置換流動を許容でろ板状力発生
手段〉備えたピストンと、？体と（−で筒状であって一
端か前記下部油室に開口しかつ、筒壁π、ずいに異なる
開口径乞もって円周方向に初数鳴配設された、ｉ前記上
部油ｉＶＣ連ｌｊ！ｌｆる上丁二列のオリフィスを有し
、前記ピストンロッドとピストンとを連繋ｆゐスタッド
と、このスタッドの面状内部に回動可能ｖｃ戚挿さｎ１
前記下部油室π向って開口ｆろ軸方向孔及び、該軸方向
孔内と前記二列のオリフィスの各列におけろいずｎかと
ン選択的に連通ｏ７能な上下２つの連通孔を有する調整
子と、この調整子の軸方向孔内に前記各連通孔の５ち下
４１１１１の連通孔のみを陵って挿入され、かつ、こび
〕−上下則の連通孔のみと４通ｆる通孔乞簡壁に穿設し
た、両端開放の面状部材と、この筒状部材の上１１１１
１開放端に備えられ、前記ピストンロツドグ〕上下動に
応じて該開放４ン開閉するチェックバルブと、前記週脩
子乞回転操作するモータや位１を検出センサ等の重装部
品を備えたＡ幣子駆動装置と、この調整子駆動装置と前
記調整子の間π設けらｔ″Ｌ、たシール収容部と、こσ
〕シール収容部内に在ってｎ１■記調整子駆動装置と調
整子の間γ封止イるオイルシールとを有する油圧繰面器
において、前記シール収容部に下部油室の作動油のみゲ
供給する油路ン形成したことｔ％徽とｆろ油圧緩藺器。 （２） 前記油路は、スタッドに形成されている特許
請求の範囲第１項ｉＣ載の油圧緩衝器。 （３）前記油路は、調整子に形成されている特許請求の
範囲＄１項記載の油圧幼砺器。[Scope of Claims] 11) A cylinder filled with hydraulic oil, a piston rod extending through the cylinder in a sealing manner, and a vc slide inside the cylinder. I am proud of my appointment →
The inside of this cylinder is divided into the Dobe oil chamber, the lower oil chamber, the 0) two-chamber f separation f^, the Dobe oil chamber, the lower oil chamber, and the σ] two-hole space, where the upper oil is restricted. A piston that allows displacement flow and is equipped with a filter plate-like force generating means? The upper oil chamber (i) is cylindrical in shape (-), has one end opened in the lower oil chamber, and is disposed in the circumferential direction with the cylinder wall π having different opening diameters. lj!lf has two rows of orifices on the upper side, a stud f which connects the piston rod and the piston, and a rotatable vc relative inserted into the planar interior of this stud n1
An axial hole opening toward the lower oil chamber π, and two upper and lower communication holes capable of selectively communicating with each other in the axial hole and each row of the two orifices. and an adjuster which is inserted into the axial hole of this adjuster so as to extend only the communication hole 41111 below the 5th point of each of the above communication holes, and which is inserted into the axial hole of this adjuster, and has 4 communication holes with only the communication hole of the upper and lower rule. A planar member with both ends open, which is bored in the through-hole wall, and the upper part 1111 of this cylindrical member.
[1] A check valve which is provided at the open end of the piston rod and which opens and closes in accordance with the vertical movement of the piston rod, and heavy components such as a motor that rotates the piston rod and a sensor that detects the position 1. a drive device, a seal accommodating portion with π provided between the adjuster drive device and the adjuster, and σ
] In a hydraulic surface machine having an oil seal disposed in a seal accommodating part and having a gamma seal between the regulator drive device and the regulator, only the hydraulic oil in the lower oil chamber is supplied to the seal accommodating part. The oil passage was formed with a hydraulic loosening device. (2) The hydraulic shock absorber according to claim 1, wherein the oil passage is formed in a stud. (3) The hydraulic power generator according to claim 1, wherein the oil passage is formed in a regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5891783A JPS59187128A (en) | 1983-04-04 | 1983-04-04 | Hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5891783A JPS59187128A (en) | 1983-04-04 | 1983-04-04 | Hydraulic shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59187128A true JPS59187128A (en) | 1984-10-24 |
| JPS6342135B2 JPS6342135B2 (en) | 1988-08-22 |
Family
ID=13098170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5891783A Granted JPS59187128A (en) | 1983-04-04 | 1983-04-04 | Hydraulic shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59187128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348045U (en) * | 1986-09-17 | 1988-04-01 | ||
| CN103104650A (en) * | 2011-11-10 | 2013-05-15 | 株式会社万都 | Shock absorber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02271977A (en) * | 1989-04-11 | 1990-11-06 | Kubota Corp | Method for curing cement product |
-
1983
- 1983-04-04 JP JP5891783A patent/JPS59187128A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348045U (en) * | 1986-09-17 | 1988-04-01 | ||
| CN103104650A (en) * | 2011-11-10 | 2013-05-15 | 株式会社万都 | Shock absorber |
| CN103104650B (en) * | 2011-11-10 | 2015-12-02 | 株式会社万都 | Vibration damper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6342135B2 (en) | 1988-08-22 |
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