JPS5892535U

JPS5892535U - piston structure

Info

Publication number: JPS5892535U
Application number: JP18825481U
Authority: JP
Inventors: 宇田　幸一
Original assignee: カヤバ工業株式会社
Priority date: 1981-12-17
Filing date: 1981-12-17
Publication date: 1983-06-23

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

[Brief explanation of drawings]

第１図は本考案のピストン構造を示す正面図、第２図は
同じく側面図断面図、−第３図は第２図の■−■線に沿
った断面図、第４図は同じく斜視図、第５図はノンリタ
ンバルブの正面図、第６図はピストン構造の他の実施例
を示す正面図、第７図は同じく要部の拡大断面図、第８
図はさらに他の実施例を示す正面図、第９図はまたさら
に他の実施例を示す要部の拡大断面図である。１・・・・・・ピストン構造ド、２．　２Ａ・・・・・
・ピストン、　　　、３、　３Ａ・・・・・・バルブス
トッパ、７・・・・・・バルブシート面、８・・・・・
・突条、９・・・・・・バルブ受容空間、１０゜１０Ａ
・・・・・・軸筒、１１・・・・・・回り止め突起、１
２゜１２Ａ・・・・・・通Ｌ　　１３．　１３Ａ−−−
−−−フリーフロー切欠、１４．　１４Ａ・・・・・・
ノンリタンバルブ、１５　　　　゛・・・・・・ポート
、１６・・・・・・開口切欠、１７．１７Ａ・・・・・
・バルブの中心孔、１８・・・・・・長溝。第１図　　　　　　第２図第３図　　−Fig. 1 is a front view showing the piston structure of the present invention, Fig. 2 is a side sectional view, - Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4 is a perspective view. , FIG. 5 is a front view of the non-return valve, FIG. 6 is a front view showing another embodiment of the piston structure, FIG. 7 is an enlarged sectional view of the main parts, and FIG.
The figure is a front view showing still another embodiment, and FIG. 9 is an enlarged sectional view of the main part showing still another embodiment. 1... Piston structure, 2. 2A...
・Piston, , 3, 3A... Valve stopper, 7... Valve seat surface, 8...
・Protrusion, 9... Valve receiving space, 10° 10A
・・・・・・Axis cylinder, 11 ・・・・Rotation prevention projection, 1
2゜12A・・・Through L 13. 13A---
---Free flow notch, 14. 14A...
Non-return valve, 15゛...port, 16...opening notch, 17.17A...
・Valve center hole, 18...long groove. Figure 1 Figure 2 Figure 3 -

Claims

[Scope of utility model registration request]

(1) Integrally molded piston and valve stopper
An annular valve receiving space having a flat valve seat surface is provided between the piston and the valve stopper, and a through hole and a free flow notch are provided at relative positions between the piston and the valve stopper, and a circular valve receiving space is provided around a part of the valve receiving space. A stop protrusion is provided to protrude in the radial direction, and a non-return valve having an opening notch is inserted into the valve receiving space from the outer circumferential direction of the piston, and the opening notch aligns with the dust stop protrusion. The piston structure is assembled like this.

(2) The piston structure according to claim 1, wherein the non-return valve is provided with a small port that communicates with the through hole of the piston.

(3) The piston structure according to claim 1, wherein a long groove continuous to the free blow notch provided in the valve stopper is formed in the axial direction of the outer periphery of the shaft cylinder.

(4) Claim 1 of the Utility Model Registration Claim in which a protrusion is provided in the axial direction on the surface of the valve stopper facing the non-return valve to form a free flow space for the working fluid therebetween. piston structure.