JPS6453476U

JPS6453476U -

Info

Publication number: JPS6453476U
Application number: JP14804287U
Authority: JP
Priority date: 1987-09-30
Filing date: 1987-09-30
Publication date: 1989-04-03

Description

[Brief explanation of the drawing]

第１図〜第４図はこの考案の実施例に関し、第
１図はピストン棒の先端部の詳細な構造図、第２
図は第１図の弁座を弁体側から見た図、第３図は
吸入弁の弁座と弁体及びストツパとの間の衝撃を
緩衝する緩衝材の他の実施例として弁座を弁体側
から見た図、第４図はさらに他の実施例における
ピストン棒の先端部の詳細な構造図、第５図は吸
入弁を含むピストン棒の先端部が従来構造となつ
ている強制弁式ピストンポンプの全体構造図であ
る。１４……シリンダパイプ（シリンダ）、２０…
…ピストン棒、２６……吸入弁、２８……弁体、
３０……弁座、３４……ストツパ、４２……ピス
トンパツキン、６８……弾性突起（緩衝材）、７
２……環状リツプ（緩衝材）、７６……圧縮コイ
ルばね（緩衝材）。 Figures 1 to 4 relate to an embodiment of this invention; Figure 1 is a detailed structural diagram of the tip of the piston rod;
The figure is a view of the valve seat in Figure 1 viewed from the valve body side, and Figure 3 is a view of the valve seat as another example of a cushioning material that buffers the impact between the valve seat of the suction valve, the valve body, and the stopper. 4 is a detailed structural diagram of the tip of the piston rod in another embodiment, and FIG. 5 is a forced valve type in which the tip of the piston rod including the suction valve has a conventional structure. FIG. 2 is an overall structural diagram of a piston pump. 14...Cylinder pipe (cylinder), 20...
... Piston rod, 26 ... Suction valve, 28 ... Valve body,
30... Valve seat, 34... Stopper, 42... Piston seal, 68... Elastic protrusion (buffer material), 7
2... Annular lip (buffer material), 76... Compression coil spring (buffer material).

Claims

[Claims for Utility Model Registration] (1) The suction valve includes a valve seat and a valve body that can be seated on the valve seat, and the tip of the piston rod reciprocates within the cylinder, and the tip includes: The valve body and a stopper with a through hole are fixed to a distal end side of the valve body away from the valve body, and the valve seat has a free movement on the piston rod between the valve body and the stopper with a through hole. In the forced valve type piston pump that slides on the inner surface of the cylinder, the piston gasket is fitted on the outer peripheral side between the valve seat, the valve body, and the through-hole stopper. An impact noise reduction device for a forced valve type piston pump, characterized in that a cushioning material is provided. (2) The utility model according to claim 1, wherein the cushioning material is an elastic protrusion that is integrally formed with the piston packing through a through hole in the end face of the valve seat. Impact noise reduction device for forced valve type piston pump. (3) The impact noise reduction device for a forced valve type piston pump according to claim 1, wherein the cushioning material is an annular lip made of an elastic member and fixed to the end face of the valve seat. . (4) A claim for registration of a utility model, characterized in that the cushioning material is a compression coil spring whose both ends are fitted into an annular recess on a face facing the valve seat, the valve body, and the through-hole stopper. The impact noise reduction device for a forced valve type piston pump according to item 1.