JPS5838002U - terminal speed control valve - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図ないし第４図はこの考案の弁の構成を示す図で、
第１図は竪断面図、第２図、第３図及び第４図はそれぞ
れ第１図の■−■線、■−■線及びＩＶ−ＩＶ線に沿う
断面図、第５図は前記各図に示した部分を線図的に示し
た回路図、第６図はこの考案の弁を装備した回路の図、
第７図はシリンダ前進時のこの考案の弁の内部状況を示
す断面図、第８図は減圧機構の機能を示す説明図、第９
図はシリンダ前進時のエアの流れを示す回路図、第１０
図はシリンダ後退時のこの考案の弁の内部状、況を示す
断面図、第１１図及び第１２図はその時の回路全体及び
この考案の弁のエアの流れを示す回路図、第１３図はス
トロークエンドでの低速時のこの考案の弁のエアの流れ
を示す回路図、第１４図は慣性力による容積部分内の圧
力上昇の状況を示すグラフで、第１５図は容積部分２５
内の圧力をリークさせる状況を示す回路図である。 なお図において、２・・・第１のポート、３・・・第２
のポート、６・・・主体弁、７・・・ピストン、１６・
・・固定絞り、１７・・・逆止弁、２１・・・３方弁、
２５・・・容積部分、２７・・・減圧機構、２８・・・
圧力源、２９・・・方向切換電磁弁、３２・・・シリン
ダである。 第４図 補正　昭５７．　２．　４ 実用新案登録請求の範囲を次のように補正する。 Ｏ実用新案登録請求の範囲 圧力源に連通される第１のポートとシリンダに連通され
る第２のポートとの間に形成される主弁体と１動するピ
ストンの上室側を３方弁を介して蓄圧のための容積部分
に連通させ、固定しぼりと逆止弁とを前記主弁体に対し
て並列的に設けた前・　記両ポート間において、主弁体
より第２のボート寄りに減圧逆止弁機構を介して前記容
積部分に連通ずる通路を形成し、シリンダの終端近くの
低速駆動を要する部位において前記３方弁を切り換え。 作動させて容積部分内の流体圧をピストンの上空側に供
給し、主弁体を閉塞させて前記固定絞りを介してのみ排
気が行なわれるように構成して成る終端速度制御弁。 図面の簡単な説明を次のように補正する。 明細書第１１頁第１Ｏ〜１１行の「後退時の・・・断面
図、」を「後退時この考案の弁を装備した回路図、」と
補正する。 明細書第１２頁第３行の「回路図である」を［回路図、
第１６図及び第１７図は従来例を示す回路図である。」
と補正する。Figures 1 to 4 are diagrams showing the configuration of the valve of this invention.
Figure 1 is a vertical sectional view, Figures 2, 3, and 4 are sectional views taken along the lines ■-■, ■-■, and IV-IV in Figure 1, respectively, and Figure 5 is a cross-sectional view of the A circuit diagram diagrammatically showing the parts shown in the figure, FIG. 6 is a diagram of a circuit equipped with a valve of this invention,
Fig. 7 is a sectional view showing the internal state of the valve of this invention when the cylinder moves forward, Fig. 8 is an explanatory view showing the function of the pressure reducing mechanism, and Fig. 9
The figure is a circuit diagram showing the air flow when the cylinder moves forward.
The figure is a sectional view showing the internal state of the valve of this invention when the cylinder is retracted, Figures 11 and 12 are circuit diagrams showing the entire circuit at that time and the air flow of the valve of this invention, and Figure 13 is a circuit diagram showing the air flow of the valve of this invention. A circuit diagram showing the air flow of the valve of this invention at low speed at the end of the stroke, Fig. 14 is a graph showing the situation of pressure increase in the volume part due to inertial force, and Fig. 15 is a graph showing the situation of pressure increase in the volume part 25 due to inertial force.
FIG. 3 is a circuit diagram showing a situation where internal pressure is leaked. In the figure, 2...first port, 3...second port
port, 6... main valve, 7... piston, 16...
...Fixed throttle, 17...Check valve, 21...3-way valve,
25... Volume part, 27... Pressure reduction mechanism, 28...
Pressure source, 29... direction switching solenoid valve, 32... cylinder. Figure 4 correction 1982. 2. 4. The scope of claims for utility model registration shall be amended as follows. O Utility Model Registration Claim Scope A three-way valve connects the main valve body formed between the first port communicating with the pressure source and the second port communicating with the cylinder and the upper chamber side of the piston that moves once. A fixed restrictor and a check valve are provided in parallel to the main valve body, and the port is connected to the volume part for pressure accumulation through the port, and the port is located closer to the second boat than the main valve body. A passage communicating with the volume portion is formed via a pressure reducing check valve mechanism, and the three-way valve is switched at a portion near the end of the cylinder that requires low-speed drive. A terminal speed control valve configured to be actuated to supply fluid pressure in the volume to the upper side of the piston, and to close the main valve body so that exhaust is performed only through the fixed throttle. The brief description of the drawing has been amended as follows. On page 11, lines 1O to 11 of the specification, "cross-sectional view when retracting" is amended to "circuit diagram equipped with the valve of this invention when reversing". “It is a circuit diagram” on page 12, line 3 of the specification is changed to “circuit diagram,”
FIGS. 16 and 17 are circuit diagrams showing conventional examples. ”
and correct it.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 圧力源に連通される第１のポートとシリンダに連通され
る第２のポートとの間に形成される主弁体と連動するピ
ストンの上室側を３方弁を介して蓄圧のための容積部分
に連通させ、固定しぼりと逆止弁とを前記主弁体に対し
て並列的に設けた前記両ポート間において、主弁体より
第２のポート□寄りに２方弁を介して前記容積部分に連
通ずる通路を形成し、シリンダの終端近くの低速駆動を
要する部位において前記３方弁を切り換え作動させて容
積部分内の流体圧をピストンの上空側に供給し、主弁体
を閉塞させて前記固定絞りを介してのみ排気が行なわれ
るように構成して成る終端速度制御弁。A volume for accumulating pressure through a three-way valve on the upper chamber side of the piston that is interlocked with the main valve body formed between a first port that communicates with a pressure source and a second port that communicates with a cylinder. Between the two ports, in which a fixed throttle and a check valve are provided in parallel with the main valve body, the volume is transferred to the second port □ from the main valve body through a two-way valve. A passage is formed in communication with the part, and the three-way valve is switched and operated at a part near the end of the cylinder that requires low-speed drive to supply fluid pressure in the volume part to the upper side of the piston, thereby closing the main valve body. and a terminal speed control valve configured such that exhaust is performed only through the fixed throttle.