JPS597641Y2 - hydraulic shock absorber - Google Patents
hydraulic shock absorberInfo
- Publication number
- JPS597641Y2 JPS597641Y2 JP12613279U JP12613279U JPS597641Y2 JP S597641 Y2 JPS597641 Y2 JP S597641Y2 JP 12613279 U JP12613279 U JP 12613279U JP 12613279 U JP12613279 U JP 12613279U JP S597641 Y2 JPS597641 Y2 JP S597641Y2
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- cylinder
- piston
- passage
- lid
- 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
Landscapes
- Fluid-Damping Devices (AREA)
Description
【考案の詳細な説明】
本考案は、油液を収容した内筒内に混入した空気を容易
に内筒外に排出するようにした油圧緩衝器に関するもの
である。[Detailed Description of the Invention] The present invention relates to a hydraulic shock absorber that allows air mixed in an inner cylinder containing oil to be easily discharged to the outside of the inner cylinder.
内外二重筒構造とした油圧緩衝器においては、水平に配
した内筒内に油液を収容してその内部をピストンを移動
させて減衰力を発生させるものであるが、内筒内に油液
を充填する場合には内筒を垂直にしてその上部開口がら
内筒内に油液を注入し、その後ピストンアッセンブリ、
ロッドガイドを組み付けている。Hydraulic shock absorbers with a double inner and outer cylinder structure contain oil in a horizontally arranged inner cylinder and move a piston inside to generate damping force. When filling with liquid, the inner cylinder is held vertically and the oil liquid is injected into the inner cylinder through its upper opening, and then the piston assembly,
Assembling the rod guide.
しがし内筒と外筒との間にはオリフイス、連通路等で連
通してあり、さらには外筒内にはピストンロツドの侵入
に伴なう体積補償を行なうための空気が存在するために
、組立時に内簡の内部に油液と空気とが混入してしまう
ものである。However, there is communication between the inner cylinder and the outer cylinder through an orifice, a communication passage, etc., and there is also air inside the outer cylinder to compensate for the volume caused by the entry of the piston rod. However, during assembly, oil and air get mixed into the inside of the inner case.
しかしながら、内筒内に空気が混入した場合には所望の
減衰力を発生させることが不可能になるために、油圧緩
衝器を組立てた後に内筒内の空気抜きを行なう必要があ
る。However, if air gets mixed into the inner cylinder, it becomes impossible to generate the desired damping force, so it is necessary to bleed air from the inner cylinder after assembling the hydraulic shock absorber.
従来、油圧緩衝器組立後、内筒内の空気抜きを行なうに
は、内筒上部に孔を設け、此部にボスを溶接し、さらに
此部からチューブを外筒設置時下部まで導出し、ピスト
ンを内筒内を摺動させることによりチューブを通して内
筒内の空気抜きを行なっていた。Conventionally, in order to vent the air inside the inner cylinder after assembling the hydraulic shock absorber, a hole was made in the upper part of the inner cylinder, a boss was welded to this part, and a tube was led out from this part to the bottom when installing the outer cylinder, and the piston was removed. Air was removed from the inner cylinder by sliding it through the tube.
しかしながら、ボス、チューブ等を必要とするために部
品点数が多くなり、また溶接するために内簡に熱による
歪がでてしまう可能性があり、さらには組付工数が多く
かかつてしまう欠点があった。However, the number of parts increases due to the need for bosses, tubes, etc., and there is a possibility that the inner tube may be distorted due to heat due to welding.Furthermore, there are disadvantages in that it requires a large number of assembly steps. there were.
また、チューブに、ピストンの移動に伴なって発生する
力が付加されるために、強度的にも支障が生じてしまう
欠点があった。Furthermore, since the force generated by the movement of the piston is applied to the tube, there is a problem in that strength is also impaired.
本考案は前記問題点を解消するもので、内筒内と内外筒
間の下方とに開口する通路を設け、該通路を通して内筒
内の空気をピストンの移動に伴なって内外筒間に排出す
るように構威したことを特徴とするものである。The present invention solves the above problem by providing a passage that opens inside the inner cylinder and below between the outer and outer cylinders, and through the passage, the air inside the inner cylinder is discharged between the inner and outer cylinders as the piston moves. It is characterized by being designed to do so.
以下、本考案の実施例を図面によって説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図において、内筒１を水平に配置して内筒１に外筒
２を外装し、内筒１内にピストン３をその長さ方向に摺
動自在に嵌合し、内外筒１，２の両開口端を蓋４，５で
密に閉塞する。In FIG. 1, an inner cylinder 1 is arranged horizontally, an outer cylinder 2 is mounted on the inner cylinder 1, a piston 3 is fitted into the inner cylinder 1 so as to be slidable in its length direction, and the inner cylinder 1, Both open ends of 2 are tightly closed with lids 4 and 5.
内筒１内のピストン３で画或された室Ａ， Ｂには油
液を充填させると共に、内外筒１，２間の下方の室Ｃを
油溜とする。The chambers A and B defined by the piston 3 in the inner cylinder 1 are filled with oil, and the lower chamber C between the inner and outer cylinders 1 and 2 is used as an oil reservoir.
ピストン３のピストンロツド６を蓋４を貫通させて外部
に突出させ、内外筒１，２間の上方の室Ｄをピストンロ
ツド６の侵入するのに伴なう体積補償を行なう空気室と
する。A piston rod 6 of a piston 3 is made to penetrate a lid 4 and protrude to the outside, and an upper chamber D between the inner and outer cylinders 1 and 2 is used as an air chamber for volume compensation as the piston rod 6 enters.
室Ａと室Ｃとは複数のオリフイス・・・・・・で連通さ
れ、室Ｃと室Ｂとは連通路８で連通されている。The chambers A and C communicate with each other through a plurality of orifices, and the chambers C and B communicate with each other through a communication path 8.
蓋５の内面側には環状の嵌合溝９が設けられており、嵌
合溝９内には環状のシール１０を介して内筒１の一端１
ａが密に嵌合している。An annular fitting groove 9 is provided on the inner surface of the lid 5, and one end 1 of the inner cylinder 1 is inserted into the fitting groove 9 via an annular seal 10.
a are tightly fitted.
他方、内筒１の一端１ａ内には周方向に沿って環状の溝
１１が設けられ、溝１１の開口端はシール１０で閉塞さ
れている。On the other hand, an annular groove 11 is provided in one end 1a of the inner cylinder 1 along the circumferential direction, and the open end of the groove 11 is closed with a seal 10.
溝１１は内筒１内に孔１２を介して開口すると共に孔１
３を介して室Ｃに開口している。The groove 11 opens into the inner cylinder 1 through the hole 12 and
It opens into chamber C through 3.
ここで、本実施例においては内筒１に孔１２、溝１１，
孔１３を設け、蓋５、孔１２， １３、溝１１によりそ
の一端が内筒１内の上部に開口しその他端が内外筒１，
２間の下方に開口する通路Ｅを形威し、該通路Ｅを内筒
１に設けたものである。Here, in this embodiment, the inner cylinder 1 has a hole 12, a groove 11,
A hole 13 is provided, one end of which opens into the upper part of the inner cylinder 1 through the lid 5, holes 12, 13, and groove 11, and the other end opens into the upper part of the inner cylinder 1.
The inner cylinder 1 is provided with a passage E that opens downward between the inner cylinder 1 and the inner cylinder 1.
油圧緩衝器を組立てた後に、内外筒１，２を水平に配し
て使用しようとすると、内筒１内に油液と空気とが混入
しており、そのままの状態では、滑らかに緩衝作用をし
ないものである。After assembling the hydraulic shock absorber, if you attempt to use it by placing the inner and outer cylinders 1 and 2 horizontally, oil and air will be mixed into the inner cylinder 1, and if it remains as it is, it will not work smoothly. It's something you don't do.
そのために、内筒１内から空気を抜き取る必要がある。For this purpose, it is necessary to remove air from inside the inner cylinder 1.
そこで、ピストン３を図中右方へ移動させると、内筒１
内の空気は右方へ押しやられて内筒１内の右端上部に集
められ、内筒１内から空気は孔１２、溝１１，孔１３、
蓋５からなる内筒の通路Ｅを通って室Ｃ内に押し出され
る。Therefore, when the piston 3 is moved to the right in the figure, the inner cylinder 1
The air inside is pushed to the right and collected at the upper right end of the inner cylinder 1, and the air from inside the inner cylinder 1 flows through the holes 12, grooves 11, holes 13,
It is pushed out into the chamber C through the passage E of the inner cylinder consisting of the lid 5.
これにより、内筒１内の空気は内外筒１間に全て排出さ
れることになる。As a result, all the air in the inner cylinder 1 is discharged between the outer and outer cylinders 1.
次に、ピストン３が左方に移動すると、室Ｂ内の油液は
連通路８から排出され、室Ａ内にオリフイス７を通って
油液が供給されることになり、空気は内筒１内に混入し
ない。Next, when the piston 3 moves to the left, the oil in the chamber B is discharged from the communication passage 8, and the oil is supplied into the chamber A through the orifice 7, and the air flows into the inner cylinder 1. Do not mix inside.
その結果滑らかに緩衝作用が行なわれる。As a result, the buffering action is performed smoothly.
第３図、第４図は本考案の他の実施例を示すものである
。3 and 4 show other embodiments of the present invention.
このものにおいては、嵌合溝９内に内筒１を密に嵌合さ
せ、蓋５にシール１０により内筒１と画威された環状の
溝１１を設け、溝１１を蓋５の切欠き１４を介して内筒
１内に開口させると共に、蓋５の切欠き１５を介して室
Ｃ内に開口させる。In this device, the inner cylinder 1 is tightly fitted into the fitting groove 9, and the lid 5 is provided with an annular groove 11 that is separated from the inner cylinder 1 by a seal 10. It opens into the inner cylinder 1 through the opening 14, and into the chamber C through the notch 15 in the lid 5.
本実施例においては、蓋５に切欠き１４， １５、溝１
１を設け、内筒１、切欠き１４， １５、溝１１により
その一端が内筒１内の上部に開口しその他端が内外筒１
，２間の下方に開口する通路Ｅを形或し、該通路Ｅを蓋
５に設けたものである。In this embodiment, the lid 5 has notches 14, 15 and a groove 1.
1, one end of which opens at the upper part of the inner cylinder 1 through the inner cylinder 1, notches 14, 15, and groove 11, and the other end opens into the inner and outer cylinders 1.
, 2, and the passage E is provided in the lid 5.
第５図は第１図の他の実施例を示すものである。FIG. 5 shows another embodiment of FIG. 1.
本実施例においては内筒１の一端１ａの管端面１ａ′に
その周方向に沿って、断面形状が■字形で且つその開口
側か管端面１ ａ’である環状の溝１１を設け、溝１１
の下部１１ ａ側には管端面１ａ’側外部からそれぞれ
内筒１内の上部、内外筒１，２間の室Ｃに向けて開口す
る孔１２， １３を設けてある。In this embodiment, an annular groove 11 is provided along the circumferential direction on the tube end surface 1a' of one end 1a of the inner cylinder 1, and the cross-sectional shape is a letter square, and the opening side is the tube end surface 1a'. 11
Holes 12 and 13 are provided in the lower part 11a side of the tube end face 1a' side and open toward the upper part of the inner tube 1 and the chamber C between the inner and outer tubes 1 and 2, respectively.
ここで蓋５、溝１１，孔１２， １３により通路Ｅが形
或されており、通路Ｅには内筒１に設けられている。Here, a passage E is formed by the lid 5, the groove 11, and the holes 12 and 13, and the passage E is provided in the inner cylinder 1.
このものにおいては、溝１１，孔１２， １３の加工が
全て内筒１の管端面１ａ’側の外部から行なえるので、
加工が容易となる。In this case, the grooves 11 and holes 12 and 13 can all be processed from the outside on the tube end surface 1a' side of the inner cylinder 1.
Processing becomes easier.
第６図は第１図の他の実施例である。FIG. 6 is another embodiment of FIG. 1.
このものでは、内筒１を二つに分割してその一方の内筒
１ｂの管端面に環状の溝１１を設け、他方の内筒１Ｃの
管端面に溝１１の開口部を閉塞する環状の突部ｌｃ’を
設け、突部１ｃ’を両内筒１ｂ，ＩＣ内にシール１０を
介在させて溝１１内に嵌合させてある。In this case, the inner cylinder 1 is divided into two parts, an annular groove 11 is provided on the end surface of one of the inner cylinders 1b, and an annular groove 11 is provided on the end surface of the other inner cylinder 1C to close the opening of the groove 11. A protrusion lc' is provided, and the protrusion 1c' is fitted into a groove 11 in both inner cylinders 1b and IC with a seal 10 interposed therebetween.
そして、内筒１ｂには内筒１の上部と溝１１とを連通ず
る孔１２を設けると共に室Ｃと溝１１とを連通ずる孔１
３を設けている。The inner cylinder 1b is provided with a hole 12 for communicating the upper part of the inner cylinder 1 and the groove 11, and a hole 12 for communicating the chamber C and the groove 11.
There are 3.
このものにおいては、孔１２， １３、溝１１により通
路Ｅが内筒１に設けられている。In this case, a passage E is provided in the inner cylinder 1 by holes 12, 13 and a groove 11.
なお、前述した実施例では通路Ｅを内筒１又は蓋５のい
ずれか一方に設けた場合について説明したが、第７図に
示すように、内筒１の上方の内部と蓋５とに亘って通路
Ｅを形或し、通路Ｅの一端Ｅ′を内筒１を通して内筒１
内の上部に開口し、その他端Ｅ／／を蓋５の下部におい
て内外筒１，２間の室Ｃに開口しても良いものである。In the above-described embodiment, the case where the passage E was provided in either the inner cylinder 1 or the lid 5 was explained, but as shown in FIG. to form a passage E, and pass one end E' of the passage E through the inner cylinder 1 to the inner cylinder 1.
The other end E// may be opened at the lower part of the lid 5 into the chamber C between the inner and outer cylinders 1 and 2.
尚各実施例において、通路Ｅの室Ｃ側開口部とオリフイ
ス７との間にバツフル板を配置して通路Ｅからの空気が
内筒１内に再び混入しないようにしてもよい。In each embodiment, a baffle plate may be disposed between the opening of the passage E on the chamber C side and the orifice 7 to prevent air from the passage E from entering the inner cylinder 1 again.
以上のように本考案は内筒内の上部と内外筒間の下方と
の間に通路を設けたので、組立て後一度ピストンを移動
させるだけで空気抜きが行なわれてしまうために、別途
チューブを取付ける必要がなく、さらには溶接すること
がないので、歪の出る心配はなくなるばかりでなく、部
品点数を減少でき、組付工数を低減できる。As described above, in this invention, a passage is provided between the upper part of the inner cylinder and the lower part between the outer and outer cylinders, so air can be removed by simply moving the piston once after assembly, so a separate tube is attached. Since there is no need for welding and there is no need for welding, not only is there no need to worry about distortion, but the number of parts can be reduced, and the number of assembly steps can be reduced.
第１図は、本考案の第１実施例を示す断面図である。
第２図は第１図のＩＩ 一ＩＩ線断面図である。第３図
は本考案の第２実施例を示す断面図である。
第４図は第３図のＩＶ−ＩＶ線断面図である。第５図〜
第７図は通路の他の設け方を示す断面図である。
１・・・・・・内筒、２・・・・・・外筒、３・・曲ピ
ストン、４，５・・・・・・蓋、６・・・・・・ピスト
ンロッド、１１・・曲溝、１２，１３・・・・・・孔、
１４，
１５・・・・・・切欠き。FIG. 1 is a sectional view showing a first embodiment of the present invention. FIG. 2 is a sectional view taken along the line II-III in FIG. 1. FIG. 3 is a sectional view showing a second embodiment of the present invention. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3. Figure 5~
FIG. 7 is a sectional view showing another way of providing the passage. 1...Inner cylinder, 2...Outer cylinder, 3...Curved piston, 4, 5...Lid, 6...Piston rod, 11... Curved groove, 12, 13...hole, 14, 15...notch.
Claims (1)
を蓋で閉塞し、前記内筒内にピストンをその長さ方向に
摺動自在に嵌合し且つ該ピストンのピストンロツドをー
の蓋を貫通させて外部に突出させ、一端が前記内筒内の
上部に開口し他端が前記内外筒間の下方に開口する通路
を内筒若しくは蓋の少なくとも一方に穿設させたことを
特徴とする油圧緩衝器。An outer cylinder is sheathed around an inner cylinder arranged horizontally, the open ends of the inner and outer cylinders are closed with lids, a piston is fitted into the inner cylinder so as to be slidable in its length direction, and a piston rod of the piston is fitted. At least one of the inner cylinder or the lid is provided with a passage that penetrates the lid of the cylinder and protrudes to the outside, and has one end opening at the top of the inner cylinder and the other end opening downward between the inner and outer cylinders. A hydraulic shock absorber featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12613279U JPS597641Y2 (en) | 1979-09-12 | 1979-09-12 | hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12613279U JPS597641Y2 (en) | 1979-09-12 | 1979-09-12 | hydraulic shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5644240U JPS5644240U (en) | 1981-04-21 |
| JPS597641Y2 true JPS597641Y2 (en) | 1984-03-08 |
Family
ID=29358023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12613279U Expired JPS597641Y2 (en) | 1979-09-12 | 1979-09-12 | hydraulic shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597641Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3870993B2 (en) * | 1997-08-21 | 2007-01-24 | カヤバ工業株式会社 | Oil damper |
-
1979
- 1979-09-12 JP JP12613279U patent/JPS597641Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5644240U (en) | 1981-04-21 |
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