JPH03130324U - - Google Patents
Info
- Publication number
- JPH03130324U JPH03130324U JP4094590U JP4094590U JPH03130324U JP H03130324 U JPH03130324 U JP H03130324U JP 4094590 U JP4094590 U JP 4094590U JP 4094590 U JP4094590 U JP 4094590U JP H03130324 U JPH03130324 U JP H03130324U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- protruding member
- piston head
- internal space
- gap
- 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
Landscapes
- Shearing Machines (AREA)
Description
第１図は本考案による油圧作動装置の一実施例
を示す側断面図、第２図は本考案によるリリース
弁機構の一例を示す断面図、第３図は第２図−
線断面図、第４図および第５図は本考案による
リリース弁機構の作用を示す断面図、第６図乃至
第８図は、ガイドバーとプレートとの間に設けら
れた隙間の諸形態を示す第３図相当図、第９図は
本考案の他の実施例を示す部分断面図、第１０図
は従来の油圧作動装置にお形成するリリース弁機
構を示す断面図である。
２０……シリンダ、２０ａ……シリンダ内、２
１……ピストンヘツド、２１ａ……内部空間、２
５……リリース弁機構、２６……突出部材（ガイ
ドバー）、２６ａ……貫通孔、２７……弁体、３
０……隙間、３１……プレート。
Fig. 1 is a side sectional view showing an embodiment of the hydraulic actuating device according to the present invention, Fig. 2 is a sectional view showing an example of the release valve mechanism according to the invention, and Fig. 3 is Fig. 2-
4 and 5 are cross-sectional views showing the operation of the release valve mechanism according to the present invention, and FIGS. 6 to 8 show various forms of the gap provided between the guide bar and the plate. 3 is a view corresponding to FIG. 3, FIG. 9 is a partial sectional view showing another embodiment of the present invention, and FIG. 10 is a sectional view showing a release valve mechanism formed in a conventional hydraulic operating device. 20...Cylinder, 20a...Inside cylinder, 2
1...Piston head, 21a...Inner space, 2
5...Release valve mechanism, 26...Protruding member (guide bar), 26a...Through hole, 27...Valve body, 3
0...Gap, 31...Plate.
Claims (1)
させるためにシリンダ内に送られた圧力油をリリ
ースするリリース弁機構が、前記ピストンヘツド
の内部空間内に挿入される位置まで前記シリンダ
の内壁から突設され内部にシリンダ内壁を貫通す
る貫通孔が設けられている突出部材と、突出部材
の先端部より大きい外郭形状を有し先端部に密接
して突出部材の貫通孔を閉鎖する弁体とを備えて
いる油圧作動装置において、前記ピストンヘツド
の内部空間の入口端には内部空間を閉鎖するプレ
ートが固設され、前記突出部材が前記プレートに
対し隙間を有して揺動可能に挿通しているととも
に、前記隙間は前記弁体の外郭形状より内側に位
置するよう形成されていることを特徴とする油圧
作動装置。 A release valve mechanism that releases pressure oil sent into the cylinder to advance a piston head disposed within the cylinder projects from the inner wall of the cylinder to a position where it is inserted into the internal space of the piston head. A protruding member having a through hole therein which penetrates the inner wall of the cylinder, and a valve body having an outer shape larger than the tip of the protruding member and close to the tip to close the through hole of the protruding member. In the hydraulic actuator, a plate for closing the internal space is fixedly installed at the inlet end of the internal space of the piston head, and the protruding member is swingably inserted through the plate with a gap. The hydraulic actuator is also characterized in that the gap is formed to be located inside the outer shape of the valve body.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4094590U JP2502527Y2 (en) | 1990-04-17 | 1990-04-17 | Hydraulic actuator |
| US07/683,074 US5150644A (en) | 1990-04-17 | 1991-04-10 | Release valve mechanism in a fluid operated linear actuator for a portable cutter or the like |
| ITMI911034A IT1246601B (en) | 1990-04-17 | 1991-04-16 | RELEASE VALVE MECHANISM IN A LINEAR ACTUATOR OPERATED BY FLUID FOR A PORTABLE OR SIMILAR CUTTING DEVICE. |
| DE4112570A DE4112570C2 (en) | 1990-04-17 | 1991-04-17 | Trigger valve mechanism in a liquid powered LINEAR drive device for a portable cutter or the like. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4094590U JP2502527Y2 (en) | 1990-04-17 | 1990-04-17 | Hydraulic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03130324U true JPH03130324U (en) | 1991-12-27 |
| JP2502527Y2 JP2502527Y2 (en) | 1996-06-26 |
Family
ID=31551185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4094590U Expired - Fee Related JP2502527Y2 (en) | 1990-04-17 | 1990-04-17 | Hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2502527Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019065989A (en) * | 2017-10-03 | 2019-04-25 | 育良精機株式会社 | Hydraulic operation device and puncher |
-
1990
- 1990-04-17 JP JP4094590U patent/JP2502527Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019065989A (en) * | 2017-10-03 | 2019-04-25 | 育良精機株式会社 | Hydraulic operation device and puncher |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2502527Y2 (en) | 1996-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |