JPS62199548U - - Google Patents
Info
- Publication number
- JPS62199548U JPS62199548U JP8738586U JP8738586U JPS62199548U JP S62199548 U JPS62199548 U JP S62199548U JP 8738586 U JP8738586 U JP 8738586U JP 8738586 U JP8738586 U JP 8738586U JP S62199548 U JPS62199548 U JP S62199548U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- shock absorber
- damping force
- hydraulic shock
- piston
- 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 11
- 238000013016 damping Methods 0.000 claims description 11
- 230000035939 shock Effects 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims 4
- 238000007906 compression Methods 0.000 claims 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Damping Devices (AREA)
Description
【図面の簡単な説明】
第１図は本考案の一実施例に係る油圧緩衝器の
縦断正面図、第２図は流路を示す回路図、第３図
は減衰力特性を示すグラフ、第４図は第１図の一
部拡大断面図、第５図、第６図はリーフバルブに
加わる力の関係を示す略示図、第７図は本考案の
他の実施例に係る油圧緩衝器の一部縦断正面図、
第８図は従来の油圧緩衝器の一部縦断正面図、第
９図は従来の減衰特性を示すグラフである。
２０……シリンダ、２１……ピストン、２２…
…ピストンロツド、２３，２４……油室、３９…
…可変オリフイス、４４……メインバルブ、５０
，５１……ポート、５５……圧力室、Ａ２……リ
ーフバルブ、Ｂ２……固定オリフイスたる小孔、
５７ａ……固定オリフイスたる通路。[Brief Description of the Drawings] Fig. 1 is a longitudinal sectional front view of a hydraulic shock absorber according to an embodiment of the present invention, Fig. 2 is a circuit diagram showing a flow path, Fig. 3 is a graph showing damping force characteristics, and Fig. 3 is a graph showing damping force characteristics. 4 is a partially enlarged sectional view of FIG. 1, FIGS. 5 and 6 are schematic diagrams showing the relationship of forces applied to the leaf valve, and FIG. 7 is a hydraulic shock absorber according to another embodiment of the present invention. Partial longitudinal front view of
FIG. 8 is a partially longitudinal front view of a conventional hydraulic shock absorber, and FIG. 9 is a graph showing the conventional damping characteristics. 20...Cylinder, 21...Piston, 22...
...Piston rod, 23, 24...Oil chamber, 39...
...Variable orifice, 44...Main valve, 50
, 51...port, 55...pressure chamber, A2 ...leaf valve, B2 ...small hole serving as a fixed orifice,
57a...Passway serving as a fixed orifice.
Claims (1)
介して移動自在に挿入され、ピストンはシリンダ
内に第１、第２の二つの油室を区画し、第１、第
２の油室はピストンに設けた伸圧二つのポートを
介して連通し、又ピストンの上端面には圧側ポー
トを開閉する圧側バルブを開閉自在に設けた油圧
緩衝器に於て、前記圧側バルブ背部に圧力室を設
け、この圧力室は固定オリフイスを介して第２の
油室に開口すると共にピストンロツド内に設けた
バルブによつて変更可能な可変オリフイスを介し
てピストンロツド内の通路と連通し、この通路の
他端はチエツク弁を介して第１の油室に開閉され
るようにした油圧緩衝器の減衰力調整装置。 (2) 圧力室がピストンロツドに設けた通孔と連
通しており、ピストンロツド内にロータリバルブ
が回転自在に挿入され、ロータリバルブに設けた
可変オリフイスがロータリバルブの回転に伴なつ
て通孔に開閉され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) ロータリバルブの回転に伴ない可変オリフ
イスの通孔に対する開口面積が順次増減される実
用新案登録請求の範囲第３項記載の油圧緩衝器の
減衰力調整装置。 (4) 伸圧側バルブがピストン端面に当接する圧
側リリーフバルブと当該圧側リーフバルブの背面
に当接する圧側メインバルブとからなる実用新案
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) 圧側バルブが圧側メインバルブのみからな
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。 (6) 固定オリフイスが圧側メインバルブに設け
た小孔からな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。 (7) 固定オリフイスが圧側メインバルブの胴部
に設けら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。 (8) 固定オリフイスと圧力室と可変オリフイス
とを流れる油が固定オリフイスで一次的に絞られ
、可変オリフイスで二次的に絞られる二段絞りを
形成し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 the piston, and the piston defines two oil chambers, a first oil chamber and a second oil chamber. The oil chambers communicate with each other through two expansion ports provided on the piston, and a pressure side valve that opens and closes the pressure side port is provided on the upper end surface of the piston to freely open and close the pressure side valve. A pressure chamber is provided in the piston rod, and this pressure chamber opens into the second oil chamber through a fixed orifice and communicates with a passage in the piston rod through a variable orifice that can be changed by a valve provided in the piston rod. A damping force adjustment device for a hydraulic shock absorber, in which the other end of the passage is opened and closed to a first oil chamber via a check valve. (2) The pressure chamber communicates with a through hole provided in the piston rod, a rotary valve is rotatably inserted into the piston rod, and a variable orifice provided in the rotary valve opens and closes in the through hole as the rotary valve rotates. Scope of claim for utility model registration No. 1
A damping force adjustment device for a hydraulic shock absorber as described in . (3) The damping force adjusting device for a hydraulic shock absorber according to claim 3, wherein the opening area of the variable orifice relative to the through hole is sequentially increased or decreased as the rotary valve rotates. (4) A damping force adjustment device for a hydraulic shock absorber as set forth in claim 1, which is comprised of a compression side relief valve whose expansion side valve is in contact with the end face of the piston, and a compression side main valve which is in contact with the back surface of the compression side leaf valve. . (5) The damping force adjusting device for a hydraulic shock absorber according to claim 1, wherein the pressure side valve is only a pressure side main valve. (6) The damping force adjustment device for a hydraulic shock absorber according to claim 1, wherein the fixed orifice is a small hole provided in the pressure side main valve. (7) The damping force adjustment device for a hydraulic shock absorber according to claim 1, wherein the fixed orifice is provided in the body of the compression side main valve. (8) Utility model registration claim No. 1, which forms a two-stage restriction in which oil flowing through a fixed orifice, a pressure chamber, and a variable orifice is firstly throttled by the fixed orifice and secondarily by the variable orifice. A damping force adjustment device for a hydraulic shock absorber as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8738586U JPS62199548U (en) | 1986-06-09 | 1986-06-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8738586U JPS62199548U (en) | 1986-06-09 | 1986-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62199548U true JPS62199548U (en) | 1987-12-18 |
Family
ID=30944544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8738586U Pending JPS62199548U (en) | 1986-06-09 | 1986-06-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62199548U (en) |
-
1986
- 1986-06-09 JP JP8738586U patent/JPS62199548U/ja active Pending
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