JPS6342947U - - Google Patents
Info
- Publication number
- JPS6342947U JPS6342947U JP13614386U JP13614386U JPS6342947U JP S6342947 U JPS6342947 U JP S6342947U JP 13614386 U JP13614386 U JP 13614386U JP 13614386 U JP13614386 U JP 13614386U JP S6342947 U JPS6342947 U JP S6342947U
- Authority
- JP
- Japan
- Prior art keywords
- port
- shock absorber
- damping force
- hydraulic shock
- passage
- 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.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 8
- 230000035939 shock Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
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図はバルブ部の回路図、第４図
は圧力―流量特性を示すグラフ、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、３６…
…ポート、２９……第１のリーフバルブ、３１…
…第２のリーフバルブ、３６ａ……分岐通路、３
６ｂ……第１のバイパス、３６ｃ……第２のバイ
パス、３９……ロータリーバルブ、ａ，ｂ−−−
ｎ……可変オリフイス。
Fig. 1 is a partially vertical 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, Fig. 3 is a circuit diagram of the valve section, and Fig. 4 is a graph showing the pressure-flow characteristics, Fig. 5 is a graph showing the damping force characteristics, Fig. 6 is a partially longitudinal front view of a conventional hydraulic shock absorber, and Fig. 7 is a graph showing the conventional damping force characteristics. . 17...Cylinder, 18...Piston, 19...
...Piston rod, 21, 22...Oil chamber, 36...
...Port, 29...First leaf valve, 31...
...Second leaf valve, 36a... Branch passage, 3
6b...first bypass, 36c...second bypass, 39...rotary valve, a, b---
n...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
の油室を連通するポートとこのポートから分岐し
た分岐通路とを形成し、このポートの上下口端に
は伸圧共用の第１、第２のリーフバルブが開閉自
在に設けられ、ピストンロツドには上部油室と分
岐通路とを接続する第１のバイパスと、下部油室
を分岐通路に接続する第２のバイパスとを設け、
第１、第２のバイパス内には各バイパスの開口面
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) ポートの下部口端を開閉する第２のリーフ
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。 (3) 第２のリーフバルブとスプリングとの間に
通孔を設けた中空なバルブが介在している実用新
案登録請求の範囲第２項記載の油圧緩衝器の減衰
力調整装置。 (4) 開口面積を調整するバルブが分岐通路に対
向する可変ポートと上部油室に対向する可変オリ
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。 (5) 可変ポートと可変オリフイスが外部より同
時に連続的又は段階的に可変可能に調整される実
用新案登録請求の範囲第１項又は第４項記載の油
圧緩衝器の減衰力調整装置。 (6) ロータリバルブに上部第１の通路と下部第
２の通路とが設けられ、第１の通路に可変オリフ
イスが設けられ、第２の通路に可変ポートが設け
られている実用新案登録請求の範囲第４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. A port and a branch passage branching from this port are formed, and first and second leaf valves for expansion and compression are provided at the upper and lower mouth ends of this port so as to be openable and closable, and an upper oil chamber and a branch passage are provided in the piston rod. and a second bypass connecting the lower oil chamber to the branch passage,
A damping force adjustment device for a hydraulic shock absorber, characterized in that a valve for adjusting the opening area of each bypass is provided in the first and second bypasses. (2) The damping force adjusting device for a hydraulic shock absorber according to claim 1, wherein the second leaf valve that opens and closes the lower mouth end of the port is always biased in the closing direction by a spring. (3) The damping force adjusting device for a hydraulic shock absorber according to claim 2, wherein a hollow valve having a through hole is interposed between the second leaf valve and the spring. (4) The damping force of the hydraulic shock absorber according to claim 1, wherein the valve for adjusting the opening area is a rotary valve having a variable port facing the branch passage and a variable orifice facing the upper oil chamber. Adjustment device. (5) The damping force adjusting device for a hydraulic shock absorber according to claim 1 or 4, wherein the variable port and the variable orifice are variably adjusted simultaneously from the outside in a continuous or stepwise manner. (6) A utility model registration request in which a rotary valve is provided with an upper first passage and a lower second passage, a variable orifice is provided in the first passage, and a variable port is provided in the second passage. A damping force adjustment device for a hydraulic shock absorber according to scope 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13614386U JPS6342947U (en) | 1986-09-05 | 1986-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13614386U JPS6342947U (en) | 1986-09-05 | 1986-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6342947U true JPS6342947U (en) | 1988-03-22 |
Family
ID=31038987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13614386U Pending JPS6342947U (en) | 1986-09-05 | 1986-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6342947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109572U (en) * | 1989-02-17 | 1990-09-03 | ||
| JPH06238084A (en) * | 1993-02-19 | 1994-08-30 | Hirose Mfg Co Ltd | Rotating hook bobbin case holder for sewing machine |
-
1986
- 1986-09-05 JP JP13614386U patent/JPS6342947U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109572U (en) * | 1989-02-17 | 1990-09-03 | ||
| JPH06238084A (en) * | 1993-02-19 | 1994-08-30 | Hirose Mfg Co Ltd | Rotating hook bobbin case holder for sewing machine |
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