JPS58148303U

JPS58148303U - Hydraulic cylinder cushioning device

Info

Publication number: JPS58148303U
Application number: JP4430682U
Authority: JP
Inventors: 亮介古賀; 和正兼松; 近松　壮一
Original assignee: カヤバ工業株式会社
Priority date: 1982-03-29
Filing date: 1982-03-29
Publication date: 1983-10-05

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図乃至第３図は既知の油圧シリンダのクッション装
置の一例を示す要部の断面図で、作動状態を順序的に示
し、第４図はその開口面積の変化を示すグラフ、第５図
は本考案によるクッション装置の一実施例を示す要部の
断面図、第６図はその作動状態における開口面積の変化
を示すグラフ、第７図は本考案による他の実施例を示す
要部の断面図、第８図はその作動状態における開口面積
の変化を示すグラフ、第９図は第７図示の構成を有する
自動二輪車用フロントフォークの要部を示す一部縦断側
面図、第１０図、第１１図及び第１２図は第９図上ｎ−
′ｎ線部分のスリットの形状を夫々示す断面図である。１〜シリンダ、２〜ピストンロツド、３〜ピストン、４
〜油圧室、５〜スプリング、６゛〜クツシヨンプレート
、７〜シリンダ端面、８〜段部、ａ。ｂ、　　ｃ、　　ｃ’　ｔ〜狭狭路路ｃ’、ｃ″〜〜通
路′２〜スリット、９〜スライドリング、１０〜係止段
部、１１〜テ一パ面。補正　昭５７．　５．２４明細書中、図面の簡単な説明を次のように補正する。「第１図乃至第３図は既知の油圧シリンダのクッション
装置の一例を示す要部の断面図で、作動状態を順序的に
示し、第４図はその開口面積の変化を示すグラフ、第５
図は本考案によるクッション装置の一実施例を示す要部
の断面図、第６図はその作動状態における開口面積の変
化を示すグラフ、第７図は本考案による他の実施例を示
す要部の断面図、第８図はその作動状態における開口面
積の変化を示すグラフ、第９図は第７図示の構成を有す
る油圧シリンダの要部を示す一部縦断側面図、第１０図
、第１１図及び第１２図は第９図上■−■線部分のロッ
トの断面形状を夫々示す断面図である。］Figures 1 to 3 are cross-sectional views of essential parts showing an example of a known cushion device for a hydraulic cylinder, sequentially showing the operating states, Figure 4 is a graph showing changes in the opening area, and Figure 5 6 is a sectional view of the essential parts of an embodiment of the cushion device according to the present invention, FIG. 6 is a graph showing changes in the opening area in its operating state, and FIG. 7 is a sectional view of the essential parts of another embodiment of the cushion device according to the present invention. 8 is a graph showing changes in the opening area in its operating state; FIG. 9 is a partial vertical side view showing the main parts of the front fork for a motorcycle having the configuration shown in FIG. 7; FIG. 10; Figures 11 and 12 are upper n- in Figure 9.
FIG. 2 is a cross-sectional view showing the shape of the slit in the n-line portion. 1 - cylinder, 2 - piston rod, 3 - piston, 4
~Hydraulic chamber, 5~Spring, 6~Cushion plate, 7~Cylinder end face, 8~Step part, a. b, c, c' t~Narrow path c', c''~~Passway'2~Slit, 9~Slide ring, 10~Lock step, 11~Tapered surface. Correction 1977.5. 24 In the specification, the brief description of the drawings is amended as follows: ``Figures 1 to 3 are cross-sectional views of essential parts showing an example of a known cushion device for a hydraulic cylinder, and the operating states are shown in order. Figure 4 is a graph showing changes in the opening area, and Figure 5 is a graph showing changes in the opening area.
The figure is a sectional view of the main parts of an embodiment of the cushion device according to the present invention, FIG. 6 is a graph showing changes in the opening area in its operating state, and FIG. 7 is the main part of another embodiment of the cushion device according to the present invention. 8 is a graph showing changes in the opening area in its operating state. FIG. 9 is a partially vertical side view showing the main parts of the hydraulic cylinder having the configuration shown in FIG. 7, and FIGS. 10 and 11. This figure and FIG. 12 are cross-sectional views showing the cross-sectional shape of the lot at the upper line (■--■) in FIG. 9, respectively. ]

Claims

[Scope of utility model registration request]

A constriction path that gradually controls the flow rate is formed between the step provided on the cylinder end face and the cushion plate of a constant thickness, and when the cushion plate comes into contact with the cylinder end face, the opening area is momentarily reduced. A cushion device for a hydraulic cylinder, characterized in that a passage is provided between a cushion plate and a piston rod to prevent damage.