JPH023975U - - Google Patents
Info
- Publication number
- JPH023975U JPH023975U JP8017288U JP8017288U JPH023975U JP H023975 U JPH023975 U JP H023975U JP 8017288 U JP8017288 U JP 8017288U JP 8017288 U JP8017288 U JP 8017288U JP H023975 U JPH023975 U JP H023975U
- Authority
- JP
- Japan
- Prior art keywords
- orifice
- spool
- sub
- fluid pressure
- pressure difference
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 6
- 238000013016 damping Methods 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 claims 1
Landscapes
- Details Of Valves (AREA)
Description
第１図は本考案に係る流量制御装置の一実施例
を示す断面図、第２図はこの実施例に供されるサ
ブスプールを示す断面図、第３図はこのサブスプ
ールの要部拡大図、第４図は従来の装置を示す断
面図である。
２３…ハウジング、２６…段差孔、２６ａ…小
径部内周面、２８…導入通路、２９…ドレン通路
、３０…メインスプール、３３…吐出通路、３７
…サブスプール、３８…第１図オリフイス、４５
…第２オリフイス、４８…ダンパー室、４９…螺
旋溝、５０…減衰オリフイス。
Fig. 1 is a sectional view showing an embodiment of the flow rate control device according to the present invention, Fig. 2 is a sectional view showing a sub-spool used in this embodiment, and Fig. 3 is an enlarged view of the main parts of this sub-spool. , FIG. 4 is a sectional view showing a conventional device. 23...Housing, 26...Step hole, 26a...Inner peripheral surface of small diameter portion, 28...Introduction passage, 29...Drain passage, 30...Main spool, 33...Discharge passage, 37
...Sub spool, 38...Fig. 1 Orifice, 45
...Second orifice, 48...Damper chamber, 49...Spiral groove, 50...Dampening orifice.
Claims (1)
たハウジング内に、メインスプールとサブスプー
ルとを夫々摺動可能に収納すると共に、上記導入
通路と吐出通路との間に、第１オリフイスと上記
サブスプールの変位に応じて開口面積が変化する
第２オリフイスとを形成し、上記サブスプールの
外壁と上記ハウジングの内周面との間に、減衰オ
リフイスを介して上記第１オリフイスの上流側と
連通するダンパ室を形成し、更に上記メインスプ
ールを上記第２オリフイスの前後の流体圧力差に
応動させると共に、上記サブスプールを上記第１
オリフイスの前後の流体圧力差若しくは上記第１
オリフイスの上流側流体圧力と第２オリフイスの
下流側流体圧力との圧力差に応動させ、上記吐出
通路から流出する作動流体を所定の流量特性に制
御する流量制御装置において、上記減衰オリフイ
スを上記ハウジングの内周面とサブスプールの外
周面に形成された螺旋溝との間に形成したことを
特徴とする流量制御装置。 A main spool and a sub-spool are each slidably housed in a housing in which an introduction passage, a drain passage, and a discharge passage are formed, and a first orifice and a sub-spool are disposed between the introduction passage and the discharge passage. a second orifice whose opening area changes according to the displacement of the second orifice, and communicates with the upstream side of the first orifice through a damping orifice between the outer wall of the sub-spool and the inner peripheral surface of the housing. A damper chamber is formed, and the main spool is made to respond to a fluid pressure difference before and after the second orifice, and the sub-spool is made to respond to the fluid pressure difference before and after the second orifice.
The fluid pressure difference before and after the orifice or the first
In a flow control device that controls the working fluid flowing out from the discharge passage to a predetermined flow rate characteristic in response to a pressure difference between fluid pressure on the upstream side of an orifice and fluid pressure on the downstream side of a second orifice, the damping orifice is connected to the housing. A flow control device characterized in that the flow control device is formed between the inner circumferential surface of the sub-spool and a spiral groove formed on the outer circumferential surface of the sub-spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8017288U JPH023975U (en) | 1988-06-17 | 1988-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8017288U JPH023975U (en) | 1988-06-17 | 1988-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH023975U true JPH023975U (en) | 1990-01-11 |
Family
ID=31305011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8017288U Pending JPH023975U (en) | 1988-06-17 | 1988-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH023975U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03116307U (en) * | 1990-03-09 | 1991-12-02 | ||
| JPH03116306U (en) * | 1990-03-09 | 1991-12-02 | ||
| JPH03122007U (en) * | 1990-03-28 | 1991-12-12 | ||
| JPH0422410U (en) * | 1990-06-19 | 1992-02-25 |
-
1988
- 1988-06-17 JP JP8017288U patent/JPH023975U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03116307U (en) * | 1990-03-09 | 1991-12-02 | ||
| JPH03116306U (en) * | 1990-03-09 | 1991-12-02 | ||
| JPH03122007U (en) * | 1990-03-28 | 1991-12-12 | ||
| JPH0422410U (en) * | 1990-06-19 | 1992-02-25 |
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