JPS6359237U - - Google Patents
Info
- Publication number
- JPS6359237U JPS6359237U JP15346786U JP15346786U JPS6359237U JP S6359237 U JPS6359237 U JP S6359237U JP 15346786 U JP15346786 U JP 15346786U JP 15346786 U JP15346786 U JP 15346786U JP S6359237 U JPS6359237 U JP S6359237U
- Authority
- JP
- Japan
- Prior art keywords
- port
- piston
- valve
- leaf valve
- side leaf
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Damping Devices (AREA)
Description
第１図は本考案の一実施例に係る油圧緩衝器の
一部縦断正面図、第２図は第１図のピストン部の
拡大断面図、第３図は伸長時のバルブ部の回路図
、第４図は圧縮時のバルブ部の回路図、第５図は
減衰力特性を示すグラフ、第６図は従来の油圧緩
衝器の一部縦断正面図、第７図は従来の減衰力特
性を示すグラフである。
１７……シリンダ、１８……ピストン、１９…
…ピストンロツド、２１，２２……油室、３３…
…第３のボート、３６ａ……伸ポート、３６ｂ…
…圧ポート、２９……第２の伸側リーフバルブ、
３１……第１の伸側リーフバルブ、３６ｃ……第
１のバイパス、３６ｄ……第２のバイパス、３９
……ロータリーバルブ、５０……デイスク、５３
……第１の圧側リーフバルブ、５２……第２の圧
側リーフバルブ、５５……可変オリフイス。
FIG. 1 is a partially longitudinal front view of a hydraulic shock absorber according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the piston section of FIG. 1, and FIG. 3 is a circuit diagram of the valve section when extended. Figure 4 is a circuit diagram of the valve section during compression, Figure 5 is a graph showing damping force characteristics, Figure 6 is a partially longitudinal front view of a conventional hydraulic shock absorber, and Figure 7 is a graph showing conventional damping force characteristics. This is a graph showing. 17...Cylinder, 18...Piston, 19...
...Piston rod, 21, 22...Oil chamber, 33...
...Third boat, 36a...Extension port, 36b...
...Pressure port, 29...Second expansion side leaf valve,
31...First growth side leaf valve, 36c...First bypass, 36d...Second bypass, 39
...Rotary valve, 50...Disk, 53
...First pressure side leaf valve, 52...Second pressure side leaf valve, 55...Variable orifice.
Claims (1)
ツドが移動自在に挿入され、ピストンはシリンダ
内に上下二つの油室を区画し、ピストンには二つ
の油室を連通する二つの伸ポートと圧ポートを形
成し、伸ポートの下部口端に第１の伸側リーブバ
ルブを開閉自在に設け、圧ポートの上部口端には
第１の圧側リーフバルブが開閉自在に設けられ、
更にピストンロツドにはピストン上方にデイスク
を設け、このデイスクには上部油室に開口する第
３のポートを形成し、第３のポートの上下各口端
に第２の伸側リーフバルブと第２の圧側リーフバ
ルブを開閉自在に設け、デイスクとピストンロツ
ドには第３のポートを下部油室を連通する第１の
バイパスを設け、ピストンロツドには上部油室と
下部油室を連通させる第２のバイパスを設け、各
バイパス内には当該バイパスの開口面積を調整す
るバルブを設けたことを特徴とする油圧緩衝器の
減衰力調整装置。 (2) 開口面積を調整するバルブが可変ポートと
可変オリフイスを設けたロータリバルブである実
用新案登録請求の範囲第１項記載の油圧緩衝器の
減衰力調整装置。 (3) 第１の伸側リーフバルブはスプリングで常
時閉じ方向に付勢されている実用新案登録請求の
範囲第１項記載の油圧緩衝器の減衰力調整装置。[Claims for Utility Model Registration] (1) A piston rod is movably inserted into the cylinder via a piston, the piston defines two upper and lower oil chambers in the cylinder, and the two oil chambers communicate with the piston. Two expansion ports and a pressure port are formed, a first expansion side leaf valve is provided at the lower mouth end of the expansion port so as to be openable and closable, and a first compression side leaf valve is provided at the upper mouth end of the pressure port so as to be openable and closable. is,
Further, the piston rod is provided with a disk above the piston, a third port that opens into the upper oil chamber is formed in this disk, and a second expansion side leaf valve and a second expansion side leaf valve are provided at each of the upper and lower mouth ends of the third port. A pressure side leaf valve is provided to open and close freely, a first bypass is provided on the disk and the piston rod to communicate the third port with the lower oil chamber, and a second bypass is provided on the piston rod to communicate the upper oil chamber and the lower oil chamber. 1. A damping force adjustment device for a hydraulic shock absorber, characterized in that a valve is provided in each bypass to adjust the opening area of the bypass. (2) The damping force adjusting device for a hydraulic shock absorber according to claim 1, wherein the valve for adjusting the opening area is a rotary valve provided with a variable port and a variable orifice. (3) The damping force adjusting device for a hydraulic shock absorber according to claim 1, wherein the first extension leaf valve is always biased in the closing direction by a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986153467U JPH0519626Y2 (en) | 1986-10-06 | 1986-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986153467U JPH0519626Y2 (en) | 1986-10-06 | 1986-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6359237U true JPS6359237U (en) | 1988-04-20 |
| JPH0519626Y2 JPH0519626Y2 (en) | 1993-05-24 |
Family
ID=31072377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986153467U Expired - Lifetime JPH0519626Y2 (en) | 1986-10-06 | 1986-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0519626Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307535A (en) * | 1989-01-09 | 1989-12-12 | Kayaba Ind Co Ltd | Damping force regulating type shock absorber |
| JPH0434236A (en) * | 1990-05-28 | 1992-02-05 | Atsugi Unisia Corp | Damping force variable shock absorber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884241A (en) * | 1981-11-16 | 1983-05-20 | Kayaba Ind Co Ltd | Hydraulic buffer of damping force adjustment type |
| JPS58123938U (en) * | 1982-02-17 | 1983-08-23 | 株式会社昭和製作所 | Hydraulic shock absorber damping force adjustment mechanism |
| JPS60227031A (en) * | 1984-04-26 | 1985-11-12 | Showa Mfg Co Ltd | Variable-damping force damper |
| JPS61109929U (en) * | 1984-12-25 | 1986-07-11 |
-
1986
- 1986-10-06 JP JP1986153467U patent/JPH0519626Y2/ja not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884241A (en) * | 1981-11-16 | 1983-05-20 | Kayaba Ind Co Ltd | Hydraulic buffer of damping force adjustment type |
| JPS58123938U (en) * | 1982-02-17 | 1983-08-23 | 株式会社昭和製作所 | Hydraulic shock absorber damping force adjustment mechanism |
| JPS60227031A (en) * | 1984-04-26 | 1985-11-12 | Showa Mfg Co Ltd | Variable-damping force damper |
| JPS61109929U (en) * | 1984-12-25 | 1986-07-11 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307535A (en) * | 1989-01-09 | 1989-12-12 | Kayaba Ind Co Ltd | Damping force regulating type shock absorber |
| JPH0434236A (en) * | 1990-05-28 | 1992-02-05 | Atsugi Unisia Corp | Damping force variable shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519626Y2 (en) | 1993-05-24 |
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