JPH0448405U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図から第４図は、本考案の一実施例を示し
、第１図は、第３図のＩ−Ｉ線矢視断面図、第２
図は、油圧給排回路の系統図、第３図は、油圧シ
リンダ装置を利用した油圧クランプの縦断面図、
第４図は、その油圧クランプの平面図である。第
５図は、変形例を示し、第１図に相当する図であ
る。第６図は、従来例を示し、第１図に相当する
図である。 １……油圧シリンダ装置、１ａ……シリンダ本
体、１１……残圧保持用弁装置、１５……強制開
弁手段、４１……収容穴、４１ａ……底壁、４２
……弁ケーシング、４３……弁蓋部材、４３ａ…
…先端部、４４……フイルタ室、４６……逆止弁
座、４８……逆止弁室、４９……環状フイルタ、
５０……弾性部材、５２……逆止弁体、５３……
通油溝、５５……弾性シール部材、５６……逆止
バネ、６１……ピストン挿入孔、６２……流体圧
ピストン（油圧ピストン）、６４……開弁具、Ａ
……作業ポート、Ｆ……流体圧給排ポート（油圧
給排ポート）、Ｐ……圧力ポート。 1 to 4 show one embodiment of the present invention, and FIG. 1 is a sectional view taken along the line I-I in FIG.
The figure is a system diagram of the hydraulic supply and discharge circuit, and Figure 3 is a vertical cross-sectional view of a hydraulic clamp using a hydraulic cylinder device.
FIG. 4 is a plan view of the hydraulic clamp. FIG. 5 shows a modification and is a diagram corresponding to FIG. 1. FIG. 6 shows a conventional example and is a diagram corresponding to FIG. 1. DESCRIPTION OF SYMBOLS 1...Hydraulic cylinder device, 1a...Cylinder body, 11...Residual pressure holding valve device, 15...Forced valve opening means, 41...Accommodation hole, 41a...Bottom wall, 42
...Valve casing, 43...Valve cover member, 43a...
... Tip part, 44 ... Filter chamber, 46 ... Check valve seat, 48 ... Check valve chamber, 49 ... Annular filter,
50...Elastic member, 52...Check valve body, 53...
Oil passage groove, 55... Elastic seal member, 56... Check spring, 61... Piston insertion hole, 62... Fluid pressure piston (hydraulic piston), 64... Valve opening tool, A
...Work port, F...Fluid pressure supply and discharge port (hydraulic supply and discharge port), P...Pressure port.

Claims (1)

【実用新案登録請求の範囲】 １ 油圧シリンダ装置１のシリンダ本体１ａに残
圧保持用弁装置１１の収容穴４１を形成し、収容
穴４１に挿入した弁ケーシング４２を弁蓋部材４
３でシリンダ本体１ａに固定し、 圧力ポートＰを、弁ケーシング４２内の逆止弁
座４６と逆止弁室４８とを順に介して、作業ポー
トＡに連通し、 逆止弁室４８内に挿入した逆止弁体５２を逆止
バネ５６で逆止弁座４６に閉弁弾圧し、 流体圧駆動式の強制開弁手段１５の開弁具６４
を弁蓋部材４３側から逆止片体５２に対向させた
、 残圧保持用弁装置付き油圧シリンダ装置におい
て、 強制開弁手段１５のピストン挿入孔６１と流体
圧給排ポートＦとを弁蓋部材４３の先端面から順
に形成し、ピストン挿入孔６１内の流体圧ピスト
ン６２に開弁具６４を連結し、 作業ポートＡを、逆止弁室４８の奥部に対面さ
せる状態で収容穴４１の底壁４１ａに開口し、 逆止バネ５６の奥端部を収容穴４１の底壁４１
ａに支持させた、 ことを特徴とする、残圧保持用弁装置付き油圧シ
リンダ装置。 ２ 請求項１に記載の残圧保持用弁装置付き油圧
シリンダ装置において、 逆止弁室４８にポペツト式の逆止弁体５２を開
閉移動自在に嵌合するとともに、逆止弁体５２の
外周面に通油溝５３を形成し、 逆止弁体５２の弁面を弾性シール部材５５で構
成した。 ３ 請求項１又は２に記載の残圧保持用弁装置付
き油圧シリンダ装置において、 圧力ポートＰと逆止弁座４６との間で弁ケーシ
ング４２の外周側に環状のフイルタ室４４を形成
し、フイルタ室４４に環状フイルタ４９を挿入し
、 環状フイルタ４９の外端部を、弁蓋部材４３の
先端部４３ａ内に嵌入させて、弾性部材５０で支
持させた。[Claims for Utility Model Registration] 1. A housing hole 41 for the residual pressure holding valve device 11 is formed in the cylinder body 1a of the hydraulic cylinder device 1, and the valve casing 42 inserted into the housing hole 41 is inserted into the valve cover member 4.
3 to the cylinder body 1a, and communicates the pressure port P with the working port A through the check valve seat 46 and the check valve chamber 48 in the valve casing 42 in order, and into the check valve chamber 48. The inserted check valve body 52 is closed by the check spring 56 against the check valve seat 46, and the valve opening tool 64 of the fluid pressure-driven forced valve opening means 15 is opened.
In a hydraulic cylinder device with a residual pressure holding valve device in which the valve cover member 43 faces the check piece 52, the piston insertion hole 61 of the forced valve opening means 15 and the fluid pressure supply/discharge port F are connected to the valve cover. A valve opening tool 64 is formed sequentially from the distal end surface of the member 43, and a valve opening tool 64 is connected to the hydraulic piston 62 in the piston insertion hole 61, and the housing hole 41 is opened with the working port A facing the inner part of the check valve chamber 48. The back end of the check spring 56 is opened in the bottom wall 41a of the housing hole 41.
A hydraulic cylinder device with a residual pressure retaining valve device, characterized in that the hydraulic cylinder device is supported by a. 2. In the hydraulic cylinder device with a residual pressure holding valve device according to claim 1, a poppet-type check valve body 52 is fitted into the check valve chamber 48 so as to be able to open and close freely, and the outer periphery of the check valve body 52 is fitted. An oil passage groove 53 is formed on the surface, and the valve surface of the check valve body 52 is constituted by an elastic seal member 55. 3. In the hydraulic cylinder device with a residual pressure holding valve device according to claim 1 or 2, an annular filter chamber 44 is formed on the outer peripheral side of the valve casing 42 between the pressure port P and the check valve seat 46, An annular filter 49 was inserted into the filter chamber 44, and the outer end of the annular filter 49 was fitted into the tip 43a of the valve cover member 43 and supported by the elastic member 50.