JPS62194945U - - Google Patents
Info
- Publication number
- JPS62194945U JPS62194945U JP8397886U JP8397886U JPS62194945U JP S62194945 U JPS62194945 U JP S62194945U JP 8397886 U JP8397886 U JP 8397886U JP 8397886 U JP8397886 U JP 8397886U JP S62194945 U JPS62194945 U JP S62194945U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- shock absorber
- hydraulic shock
- damping force
- adjusting device
- 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 12
- 230000035939 shock Effects 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
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、２６…
…リザーバ室、３２……バルブハウジング、４０
……可変オリフイス、４５……メインバルブ、５
０，５１……ポート、５２……圧力室、Ａ１……
リーフバルブ、Ｂ１，Ｂ′１……固定オリフイス
。
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 the flow path, Fig. 3 is a graph showing damping force characteristics, and Fig. 4 is the same as Fig. 1. A partially enlarged cross-sectional view, FIGS. 5 and 6 are schematic diagrams showing the relationship of forces applied to the leaf valve, FIG. 7 is a partially longitudinal front view of a hydraulic shock absorber according to another embodiment, and FIG. 8 9 is a partially vertical 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, 26...
... Reservoir chamber, 32 ... Valve housing, 40
...Variable orifice, 45...Main valve, 5
0,51...Port, 52...Pressure chamber, A1 ...
Leaf valve, B 1 , B' 1 ... fixed orifice.
Claims (1)
設け、このベースバルブハウジングにシリンダ内
油室とシリンダ外リザーバとを連通する伸・圧二
つのポートを設け、圧側ポートの下部口端に圧側
バルブを開閉自在に設けた油圧緩衝器に於て、ベ
ースバルブハウジングの上端面には伸側ポートを
開閉するチエツク弁を開閉自在に設ける一方、前
記圧側バルブの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シリンダ内油室に開口
すると共に開閉自在な可変オリフイスを介してリ
ザーバに連通されるようにした油圧緩衝器におけ
る減衰力調整装置。 (2) 圧側バルブがベースバルブハウジングに当
接するリーフバルブとこのリーフバルブの背面に
当接する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における減衰力
調整装置。 (3) 固定オリフイスがリーフバルブに形成され
ている実用新案登録請求の範囲第２項記載の油圧
緩衝器における減衰力調整装置。 (4) 伸側バルブがベースバルブハウジングに当
接するメインバルブ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における減衰力調整
装置。 (5) 固定オリフイスがメインバルブの内側に設
けられている実用新案登録請求の範囲第４項記載
の油圧緩衝器における減衰力調整装置。 (6) ボトムにロツドが起立し、圧力室がこのロ
ツドに設けた通孔と連通しており、他方ボトム内
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
自体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における
減衰力調整装置。 (7) 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６項記載の油圧緩衝器に
おける減衰力調整装置。 (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
の油圧緩衝器における減衰力調整装置。[Scope of Claim for Utility Model Registration] (1) A base valve housing is provided at the bottom of the cylinder, and this base valve housing is provided with two expansion and compression ports that communicate between the oil chamber inside the cylinder and the reservoir outside the cylinder, and the bottom of the compression side port. In a hydraulic shock absorber in which a pressure side valve is provided at the mouth end so that the pressure side valve can be opened and closed, a check valve for opening and closing the extension side port is installed on the upper end surface of the base valve housing, and a pressure chamber is provided at the back of the pressure side valve. A damping force adjustment device for a hydraulic shock absorber, wherein the pressure chamber is opened to an oil chamber in a cylinder through a fixed orifice and communicated with a reservoir through a variable orifice that can be opened and closed. (2) The damping force adjusting device for a hydraulic shock absorber according to claim 1, which is comprised of a leaf valve whose pressure side valve contacts a base valve housing, and a main valve which contacts the back surface of the leaf valve. (3) The damping force adjusting device for a hydraulic shock absorber according to claim 2 of the utility model registration claim, wherein the fixed orifice is formed in the leaf valve. (4) The damping force adjusting device for a hydraulic shock absorber according to claim 1, which is a utility model registration, and comprises a main valve whose extension side valve is in contact with a base valve housing. (5) The damping force adjusting device for a hydraulic shock absorber according to claim 4, wherein the fixed orifice is provided inside the main valve. (6) A rod stands up on the bottom, and the pressure chamber communicates with a through hole provided in this rod.A rotary valve is rotatably inserted into the bottom, and the variable orifice provided in the rotary valve is connected to the rotary valve itself. A damping force adjusting device for a hydraulic shock absorber according to claim 1, which opens and closes in a through hole as it rotates. (7) The damping force adjusting device for a hydraulic shock absorber according to claim 6, wherein the opening area of the variable orifice relative to the through hole is sequentially increased or decreased as the rotary valve rotates. (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 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8397886U JPS62194945U (en) | 1986-06-02 | 1986-06-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8397886U JPS62194945U (en) | 1986-06-02 | 1986-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62194945U true JPS62194945U (en) | 1987-12-11 |
Family
ID=30938064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8397886U Pending JPS62194945U (en) | 1986-06-02 | 1986-06-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62194945U (en) |
-
1986
- 1986-06-02 JP JP8397886U patent/JPS62194945U/ja active Pending
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