JPS623004B2 - - Google Patents
Info
- Publication number
- JPS623004B2 JPS623004B2 JP54162805A JP16280579A JPS623004B2 JP S623004 B2 JPS623004 B2 JP S623004B2 JP 54162805 A JP54162805 A JP 54162805A JP 16280579 A JP16280579 A JP 16280579A JP S623004 B2 JPS623004 B2 JP S623004B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- piston
- vehicle
- vehicle height
- cylinder
- 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
- 239000000725 suspension Substances 0.000 claims description 14
- 230000035939 shock Effects 0.000 claims description 7
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
- B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
- B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
- B60G2202/312—The spring being a wound spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/32—The spring being in series with the damper and/or actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/128—Damper mount on vehicle body or chassis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】
車体懸架用油圧緩衝器のピストンロツドに軸方
向の油路を形成すると共に該ロツドの上端をこれ
と同軸的に配置されたゴムのような環状の弾性体
で車体に結着して、上記弾性体の上面に形成した
油室を緩衝器のシリンダ内に連結することによ
り、車体の静荷重を油に加えて前記弾性体に加わ
る荷重を小さくすることができる（特公昭51−
21218目公報参照）。このような懸架装置において
は充填する油の量によつて車高を調整することが
できる。しかし油圧が極めて高くなるために調整
が困難であり、かつ油の漏洩を生じ易い等の欠点
がある。従つて本考案は油圧を充分低くして漏洩
等のおそれを除去すると共に僅小な油圧変化によ
つて車高を広範囲に調整することのできる車体懸
架装置を提供するものである。DETAILED DESCRIPTION OF THE INVENTION An axial oil passage is formed in the piston rod of a hydraulic shock absorber for vehicle suspension, and the upper end of the rod is connected to the vehicle body by an annular elastic body such as rubber disposed coaxially with the piston rod. By connecting the oil chamber formed on the upper surface of the elastic body to the cylinder of the shock absorber, the static load of the vehicle body can be added to the oil and the load applied to the elastic body can be reduced. 51−
(See No. 21218). In such a suspension system, the vehicle height can be adjusted by adjusting the amount of oil filled. However, since the oil pressure becomes extremely high, it is difficult to adjust, and oil leakage is likely to occur. Accordingly, the present invention provides a vehicle body suspension system in which the hydraulic pressure is sufficiently low to eliminate the risk of leakage and the like, and the vehicle height can be adjusted over a wide range by making small changes in the hydraulic pressure.
第１図は本発明実施例の一部の縦断した正面図
で、四輪車の後輪の軸に結着されるシリンダ１に
ピストン２を摺動自在に嵌合して油圧緩衝器を構
成してある。なお図示してないが必要に応じては
シリンダ１の下部にフリーピストンを嵌合してそ
の下に高圧の気体を封入することもできるが、上
記緩衝器のピストンロツド３とシリンダ１との間
に車体懸架用の補助金属ばね４を張架し、かつ上
記ロツド３を中空パイプで形成してその両端を連
結する油孔５を設けてある。このピストンロツド
３の上端に車高調整用のピストン６を形成して円
筒体７に摺動自在に嵌合し、該ピストンにオイル
シール８を設けると共に上記円筒体７とピストン
６の上面および下面の間に該ピストンを逆向きに
押圧するばね９，１０を張架してある。また円筒
体７の外側面に環状をなしたゴムのような弾性体
１１の内面を焼付けて、車体に固定される円筒状
の外壁１２に上記弾性体の外面を焼付けてある。
更に上記外壁の上端に蓋体１３を設けて前記円筒
体７の上部を密封し、弾性体１１の上面を壁面の
一部とする可変容積の油室１４を形成して、この
油室に車高調整用油の流出入口１５を設け、導管
１６によつて高圧油源に連結してある。第２図は
前記ピストン２を縦断した図で、該ピストンには
ピストンリング１７を嵌合すると共に油孔１８を
設けて、オリフイス１９を有するデイスクバルブ
２０をその上面に配置し、ばね２１で押圧してあ
る。また車高調整用ピストン６に螺着した有底筒
２２を設けて、第３図のようにその底面に油孔２
３を形成し、オリフイス２４を有するデイスクバ
ルブ２５を上記油孔の下部に配置してばね２６で
押圧すると共に該バルブの上面に弾性体の薄板で
形成したバルブ２７を重合してある。かつ先端に
近附く程径を大きくしたピン２８を前記円筒体７
の底面に植設して、有底筒２２の底面に形成した
油孔２９に上記ピン２８をゆるく嵌合してある。
なお前記弾性体１１の上面には該弾性体が油に溶
解することを防止するための可橈膜３０を設けて
ある。 FIG. 1 is a longitudinally sectional front view of a part of an embodiment of the present invention, in which a hydraulic shock absorber is constructed by slidably fitting a piston 2 into a cylinder 1 connected to the shaft of a rear wheel of a four-wheeled vehicle. It has been done. Although not shown, if necessary, a free piston can be fitted to the lower part of the cylinder 1 and high-pressure gas can be sealed thereunder. An auxiliary metal spring 4 for suspending the vehicle body is stretched, and the rod 3 is formed of a hollow pipe, with an oil hole 5 connecting both ends thereof. A piston 6 for vehicle height adjustment is formed at the upper end of this piston rod 3 and is slidably fitted into a cylindrical body 7. An oil seal 8 is provided on the piston, and the upper and lower surfaces of the cylindrical body 7 and the piston 6 are connected to each other. Springs 9 and 10 are stretched between them to press the piston in opposite directions. Further, the inner surface of an annular elastic body 11 such as rubber is baked on the outer surface of the cylindrical body 7, and the outer surface of the elastic body is baked on a cylindrical outer wall 12 that is fixed to the vehicle body.
Further, a lid body 13 is provided at the upper end of the outer wall to seal the upper part of the cylindrical body 7, and an oil chamber 14 of variable volume is formed in which the upper surface of the elastic body 11 is a part of the wall surface. A high-adjustment oil inlet 15 is provided and connected by a conduit 16 to a source of high-pressure oil. FIG. 2 is a longitudinal cross-sectional view of the piston 2, in which a piston ring 17 is fitted and an oil hole 18 is provided, and a disc valve 20 having an orifice 19 is disposed on the upper surface, and is pressed by a spring 21. It has been done. In addition, a bottomed cylinder 22 screwed onto the vehicle height adjustment piston 6 is provided, and an oil hole 2 is provided in the bottom surface of the cylinder 22 as shown in FIG.
A disk valve 25 having an orifice 24 is disposed below the oil hole and pressed by a spring 26, and a valve 27 formed of a thin elastic plate is superimposed on the upper surface of the valve. A pin 28 whose diameter increases closer to the tip is attached to the cylindrical body 7.
The pin 28 is loosely fitted into an oil hole 29 formed in the bottom of the bottomed cylinder 22.
A flexible membrane 30 is provided on the upper surface of the elastic body 11 to prevent the elastic body from dissolving in oil.
上述の懸架装置に加わる車体の重量をＷ、ばね
４の弾力をＦ、ピストンロツド３の断面積をＳと
し、またばね９，１０の弾力が平衡しているもの
とすると、シリンダ１および油室１４等の油圧は
（Ｗ−Ｆ）／Ｓとなつて、ゴム等の弾性体１１に
は力Ｆだけが加わる。従つてばね４の弾力Ｆを適
当に選定することにより、油圧Ｐが著しく高くな
つてオイルシール等が容易に損傷し油漏れを生ず
ることを防止し得ると共に弾性体１１に全荷重が
加わつて、これが短期間に劣化することも防止さ
れる。 Assuming that the weight of the vehicle body applied to the above-mentioned suspension system is W, the elasticity of the spring 4 is F, the cross-sectional area of the piston rod 3 is S, and the elasticities of the springs 9 and 10 are balanced, the cylinder 1 and the oil chamber 14 The hydraulic pressure is (W-F)/S, and only force F is applied to the elastic body 11 such as rubber. Therefore, by appropriately selecting the elasticity F of the spring 4, it is possible to prevent the oil pressure P from becoming extremely high and easily damaging the oil seal etc. and causing oil leakage, and at the same time, it is possible to prevent the entire load from being applied to the elastic body 11. This also prevents it from deteriorating in a short period of time.
かつ導管１６はコツク等によつて常時閉塞され
ているが、そのコツクを開いて油室１４等に油を
送り込むことにより油圧Ｐを僅かに増大させる
と、第１図の状態から第３図に実線で示したよう
に車高調整用ピストン６が円筒体７内を下降する
と共に弾性体１１の変形により油室１４が拡大し
て、このため車高が高くなる。また逆に油室１４
等の油を流出させて油圧Ｐを僅かに低下させると
鎖線で示したようにピストン６が上昇すると共に
該油室が縮小して車高が低下する。このように本
発明の装置は円筒体７に車高調整用のピストン６
を嵌合してあるから、微小の油圧変化によつて車
高を広範囲に調整することができる。かつ上記ピ
ストンを逆向きに押圧するばね９，１０を設ける
ことにより、油圧と車高の関係をほぼ比例させて
円滑な調整を行い得る。更に断面積が次第に変化
するピン２８を油孔２９に嵌合してあるから、積
載重量の大きい場合に車高を上げると、懸架装置
が圧縮される場合の減衰力が増大する。従つて車
体に大きな振動を生じて懸架装置が極限まで圧縮
され、機械的な衝撃を生ずるようなおそれを除去
することができる。 In addition, although the conduit 16 is always blocked by a plug or the like, if the oil pressure P is slightly increased by opening the plug and sending oil into the oil chamber 14, etc., the state shown in Fig. 1 changes from the state shown in Fig. 3. As shown by the solid line, the vehicle height adjusting piston 6 moves down within the cylindrical body 7, and the oil chamber 14 expands due to the deformation of the elastic body 11, thereby increasing the vehicle height. On the other hand, the oil chamber 14
When the oil pressure P is slightly lowered by causing the oil to flow out, the piston 6 rises as shown by the chain line, and the oil chamber contracts, thereby lowering the vehicle height. In this way, the device of the present invention has a piston 6 for adjusting vehicle height in the cylindrical body 7.
The vehicle height can be adjusted over a wide range by making minute changes in hydraulic pressure. Furthermore, by providing springs 9 and 10 that press the piston in opposite directions, the relationship between the oil pressure and the vehicle height can be made approximately proportional to achieve smooth adjustment. Furthermore, since the pin 28 whose cross-sectional area gradually changes is fitted into the oil hole 29, when the vehicle height is raised when the loaded weight is large, the damping force when the suspension system is compressed increases. Therefore, it is possible to eliminate the possibility that large vibrations may occur in the vehicle body, compressing the suspension system to the utmost limit and causing mechanical shock.
なお車輪に加わる衝撃で懸架装置が圧縮される
場合は、ピストン２のバルブ２０が開いて、その
下部の油が上部へ容易に移動する。しかしシリン
ダ１内へ挿入されたピストンロツド３の体積に相
当する油が油孔２９を通つてピストン６の上部へ
移動すると共にオリフイス２４から弾性体のバル
ブ２７を押し開いて該ピストン６の上部へ移動す
る。従つて上記油孔２９およびバルブ２５，２７
の部分で適当な減衰力が発生する。次に懸架装置
が伸長行程に入ると、バルブ２５が開いて、ピス
トン６の上部および油室１４の油がシリンダ１の
下部へ容易に流入する。しかしこの場合はピスト
ン２のバルブ２０が閉じるからその上部の油がオ
リフイス１９を通つて下部へ移動し、比較的大き
い適当な減衰力が発生する。 Note that when the suspension system is compressed by the impact applied to the wheels, the valve 20 of the piston 2 opens, and the oil in the lower part of the valve 20 easily moves to the upper part. However, oil corresponding to the volume of the piston rod 3 inserted into the cylinder 1 moves to the upper part of the piston 6 through the oil hole 29 and pushes open the elastic valve 27 from the orifice 24 and moves to the upper part of the piston 6. do. Therefore, the oil hole 29 and valves 25, 27
Appropriate damping force is generated at this part. Next, when the suspension system enters an extension stroke, the valve 25 opens and the oil in the upper part of the piston 6 and the oil chamber 14 easily flows into the lower part of the cylinder 1. However, in this case, since the valve 20 of the piston 2 is closed, the oil in the upper part moves to the lower part through the orifice 19, and a relatively large appropriate damping force is generated.
以上実施例について説明したように本発明の懸
架装置は、ゴムのような弾性体を介して車体を懸
架するから、該車体に高周波の微振動が伝ぱんし
て乗心地が損われるような欠点がないと共に該弾
性体に加わる静荷重を小さくして、その劣化を防
止することができる。しかも油に適当な圧力を加
えてキヤビテーシヨン等による減衰力特性の擾乱
を防止し得ると共に油圧を僅かに変化することに
よつて車高を広範囲に調整することができる。か
つ油圧緩衝器のシリンダとピストンロツドとの間
に補助懸架ばねを設けることにより、油圧を著し
く高くする必要がないから、オイルシール等の寿
命も延長して油漏れによる事故を防止し得ると共
に仮りに油漏れを生じた場合でも上記懸架ばねに
よつて車体が保持されるから安全性も向上する。 As explained above with respect to the embodiments, the suspension system of the present invention suspends the vehicle body via an elastic body such as rubber, so it has the drawback that high-frequency micro vibrations are propagated to the vehicle body, impairing ride comfort. At the same time, it is possible to reduce the static load applied to the elastic body and prevent its deterioration. Moreover, by applying an appropriate pressure to the oil, it is possible to prevent disturbance of the damping force characteristics due to cavitation, etc., and by slightly changing the oil pressure, the vehicle height can be adjusted over a wide range. In addition, by providing an auxiliary suspension spring between the cylinder of the hydraulic shock absorber and the piston rod, there is no need to increase the oil pressure significantly, which extends the life of oil seals and prevents accidents caused by oil leaks. Even in the event of oil leakage, the vehicle body is held in place by the suspension springs, thereby improving safety.
第１図は本発明実施例の一部を縦断した側面
図、第２図は第１図におけるピストンを更に縦断
した図、第３図は車高を変化した場合における第
１図の一部を更に縦断して拡大した図である。な
お図において、１はシリンダ、２はピストン、３
はピストンロツド、４は補助懸架ばね、５は油
孔、６は車高調整用ピストン、７は円筒体、１１
は弾性体、１４は油室、１５は油の流出入口であ
る。
Fig. 1 is a side view of a part of the embodiment of the present invention taken longitudinally, Fig. 2 is a further sectional view of the piston in Fig. 1, and Fig. 3 shows a part of Fig. 1 when the vehicle height is changed. It is a further longitudinally enlarged view. In the figure, 1 is a cylinder, 2 is a piston, and 3 is a cylinder.
is a piston rod, 4 is an auxiliary suspension spring, 5 is an oil hole, 6 is a vehicle height adjustment piston, 7 is a cylindrical body, 11
1 is an elastic body, 14 is an oil chamber, and 15 is an oil inlet.
Claims (1)
自在に嵌合した油圧緩衝器のピストンロツドにそ
の両端を連結する油孔を形成して上記ピストンロ
ツドの上端に設けた車高調整用ピストンを円筒体
に摺動自在に嵌合し、該円筒体の底面に、先端に
向けて径を大きくしたピンを植設すると共に該ピ
ンを前記車高調整用ピストンに固着した有底筒の
底面の油孔にゆるく嵌合し、環状の弾性体を介し
て上記円筒体の外側面を車体に連結すると共に上
記弾性体の上面を壁面の一部とする可変容積の油
室を設けて前記油室に車高調整用油の流出入口を
形成し、前記車高調整用ピストンを円筒体に対し
て互に逆向きに押圧するばねを設けたことを特徴
とする車体懸架装置。 ２ 油圧緩衝器におけるシリンダとピストンロツ
ドとの間に車体懸架用の補助金属ばねを張架した
特許請求の範囲第１項の車体懸架装置。[Scope of Claims] 1. A hydraulic shock absorber having a piston slidably fitted into a cylinder connected to an axle, and an oil hole connecting both ends of the piston rod, and a vehicle height provided at the upper end of the piston rod. An adjusting piston is slidably fitted into a cylindrical body, and a pin with a diameter increasing toward the tip is implanted in the bottom of the cylindrical body, and the pin is fixed to the vehicle height adjusting piston. An oil chamber of variable volume is provided that loosely fits into the oil hole in the bottom of the cylinder, connects the outer surface of the cylindrical body to the vehicle body via an annular elastic body, and has the upper surface of the elastic body part of the wall surface. A vehicle body suspension system, characterized in that an inlet for vehicle height adjustment oil is formed in the oil chamber, and springs are provided for pressing the vehicle height adjustment pistons in opposite directions relative to the cylindrical body. 2. The vehicle body suspension system according to claim 1, wherein an auxiliary metal spring for suspending the vehicle body is stretched between the cylinder and the piston rod in the hydraulic shock absorber.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16280579A JPS5686807A (en) | 1979-12-17 | 1979-12-17 | Car body suspension |
| GB8040261A GB2068080B (en) | 1979-12-17 | 1980-12-16 | Vehicle suspension unit |
| FR8026666A FR2471873B1 (en) | 1979-12-17 | 1980-12-16 | VEHICLE BODY SUSPENSION DEVICE FOR ADJUSTING THE HEIGHT OF THE VEHICLE ABOVE THE GROUND BY LOW VARIATIONS IN THE OIL PRESSURE |
| US06/216,940 US4364582A (en) | 1979-12-17 | 1980-12-16 | Vehicle body suspension system |
| DE19803047641 DE3047641A1 (en) | 1979-12-17 | 1980-12-17 | SUSPENSION FOR VEHICLES, IN PARTICULAR MOTOR VEHICLES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16280579A JPS5686807A (en) | 1979-12-17 | 1979-12-17 | Car body suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5686807A JPS5686807A (en) | 1981-07-15 |
| JPS623004B2 true JPS623004B2 (en) | 1987-01-22 |
Family
ID=15761547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16280579A Granted JPS5686807A (en) | 1979-12-17 | 1979-12-17 | Car body suspension |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5686807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9656529B2 (en) | 2013-02-12 | 2017-05-23 | Piaggio & C. S.P.A. | Suspension group in particular for motorized vehicles |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5888127A (en) * | 1981-11-16 | 1983-05-26 | Asahi Chem Ind Co Ltd | Production of foamed particles of natural glass |
| JPS5885508U (en) * | 1981-12-08 | 1983-06-10 | 本田技研工業株式会社 | Vehicle height adjustment shock absorber |
| JPS5887607U (en) * | 1981-12-09 | 1983-06-14 | 本田技研工業株式会社 | hydraulic shock absorber |
| JPS58115408U (en) * | 1982-02-02 | 1983-08-06 | 株式会社昭和製作所 | vehicle height adjustment device |
| JPS58115409U (en) * | 1982-02-02 | 1983-08-06 | 株式会社昭和製作所 | Pipe binding device for vehicle height adjustment device |
| JPS58136506A (en) * | 1982-02-09 | 1983-08-13 | Showa Mfg Co Ltd | Adjusting device of car height |
| JPS58119409U (en) * | 1982-02-10 | 1983-08-15 | 株式会社昭和製作所 | Spring seat device in vehicle height adjustment device |
| JPS58119406U (en) * | 1982-02-10 | 1983-08-15 | 株式会社昭和製作所 | Oil chamber device in vehicle height adjustment device |
| JPH01278892A (en) * | 1988-05-02 | 1989-11-09 | Kayaba Ind Co Ltd | Suspension system for two wheeler |
| DE102007029490B4 (en) * | 2007-06-26 | 2013-05-23 | Zf Friedrichshafen Ag | Piston-cylinder assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121926A (en) * | 1974-03-11 | 1975-09-25 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754409Y2 (en) * | 1978-03-23 | 1982-11-25 |
-
1979
- 1979-12-17 JP JP16280579A patent/JPS5686807A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121926A (en) * | 1974-03-11 | 1975-09-25 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9656529B2 (en) | 2013-02-12 | 2017-05-23 | Piaggio & C. S.P.A. | Suspension group in particular for motorized vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5686807A (en) | 1981-07-15 |
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