JPH02135703U - - Google Patents
Info
- Publication number
- JPH02135703U JPH02135703U JP3598190U JP3598190U JPH02135703U JP H02135703 U JPH02135703 U JP H02135703U JP 3598190 U JP3598190 U JP 3598190U JP 3598190 U JP3598190 U JP 3598190U JP H02135703 U JPH02135703 U JP H02135703U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- chamber
- secondary pressure
- relief valve
- pressure chamber
- 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 1
- 238000013016 damping Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Safety Valves (AREA)
- Details Of Valves (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図面第１，２図はこの考案の実施例を示すもの
で、第１図は回路図、第２図は断面図、第３図は
第２実施例を示す断面図、第４，５図は従来の装
置を示すもので、第４図は回路図、第５図は断面
図である。
２２，２３……リリーフ弁、３０，３１……２
次圧室、３２，３３，４７……シヨツクレスピス
トン、３４，３５，４８……緩衝室、３７ａ……
シート部、３８……ポペツト部材、３８ｃ……オ
リフイス、４３，４９……ダンパ室、４６，５２
……チエツク弁。
Drawings 1 and 2 show an embodiment of this invention; Fig. 1 is a circuit diagram, Fig. 2 is a sectional view, Fig. 3 is a sectional view showing the second embodiment, and Figs. 4 and 5 are A conventional device is shown, with FIG. 4 being a circuit diagram and FIG. 5 being a sectional view. 22, 23...Relief valve, 30, 31...2
Secondary pressure chamber, 32, 33, 47...Shockless piston, 34, 35, 48...Buffer chamber, 37a...
Seat portion, 38... Poppet member, 38c... Orifice, 43, 49... Damper chamber, 46, 52
...Check valve.
Claims (1)
たオリフイスを介して連通させるとともに、シヨ
ツクレスピストンによつて区画形成した緩衝室を
上記２次圧室に接続し、当該リリーフ弁の作動時
に、上記２次圧室の作用でシヨツクレスピストン
が移動し、緩衝室の容積を拡大して、ポペツト部
材に形成した上記オリフイスに流れる流量を確保
し、そのオリフイス前後に発生する差圧でシート
部の開度を制御する一方、上記シヨツクレスピス
トンがストロークエンドに達したとき、当該リリ
ーフ弁の流入側と２次圧室との受圧面積差によつ
て、シート部の開度が制御され、上記シヨツクレ
スピストンのストロークエンド近傍で、ダンピン
グ機能を発揮するダンパ室を設けてなるリリーフ
弁の昇圧緩衝装置。 The inflow side and the secondary pressure chamber are communicated through an orifice formed in the poppet member, and a buffer chamber defined by a shockless piston is connected to the secondary pressure chamber, and when the relief valve is activated, The shockless piston moves under the action of the secondary pressure chamber, expands the volume of the buffer chamber, and secures the flow to the orifice formed in the poppet member, and the differential pressure generated before and after the orifice causes the seat part to On the other hand, when the shotless piston reaches the stroke end, the opening degree of the seat portion is controlled by the pressure receiving area difference between the inflow side of the relief valve and the secondary pressure chamber, A pressure boosting shock absorber for a relief valve that has a damper chamber that performs a damping function near the stroke end of a shotless piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3598190U JPH05561Y2 (en) | 1990-04-03 | 1990-04-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3598190U JPH05561Y2 (en) | 1990-04-03 | 1990-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02135703U true JPH02135703U (en) | 1990-11-13 |
| JPH05561Y2 JPH05561Y2 (en) | 1993-01-08 |
Family
ID=31541809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3598190U Expired - Lifetime JPH05561Y2 (en) | 1990-04-03 | 1990-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05561Y2 (en) |
-
1990
- 1990-04-03 JP JP3598190U patent/JPH05561Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05561Y2 (en) | 1993-01-08 |
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