JPH0214808U

JPH0214808U -

Info

Publication number: JPH0214808U
Application number: JP9271288U
Authority: JP
Priority date: 1988-07-13
Filing date: 1988-07-13
Publication date: 1990-01-30
Anticipated expiration: 2003-07-13
Also published as: JPH0716887Y2

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例の縦断正面図、第
２図は同上要部の分解斜視図、第３図は本考案の
第２実施例の要部を示す縦断正面図、第４図はク
ツシヨンストロークと制動力の関係を示す線図で
ある。１，３１……空気圧シリンダ、２，３２……流
体圧クツシヨン装置、３，３３……磁力クツシヨ
ン装置、７……ピストンロツド、８……ピストン
、１１ａ，１１ｂ，３６ａ，３６ｂ……弁体、１
２ａ，１２ｂ……弁部、１３……ガイド部、１８
ａ，１８ｂ……クツシヨンパツキング、２１ａ，
２１ｂ，２２ａ，２２ｂ……磁石、２３ａ，２３
ｂ……ホルダ、２４ａ，２４ｂ……プツシユロツ
ド、３５……オリフイス、３７ａ，３７ｂ……弁
部材。 Fig. 1 is a longitudinal sectional front view of the first embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of the same, Fig. 3 is a longitudinal sectional front view showing the main parts of the second embodiment of the invention, Fig. 4 The figure is a diagram showing the relationship between cushion stroke and braking force. 1, 31... Pneumatic cylinder, 2, 32... Fluid pressure cushion device, 3, 33... Magnetic cushion device, 7... Piston rod, 8... Piston, 11a, 11b, 36a, 36b... Valve body, 1
2a, 12b... Valve part, 13... Guide part, 18
a, 18b...Cushion packing, 21a,
21b, 22a, 22b... magnet, 23a, 23
b...Holder, 24a, 24b...Push rod, 35...Orifice, 37a, 37b...Valve member.

Claims

[Scope of Claim for Utility Model Registration] 1. A valve body having a cushion packing and a valve portion that is tightly fitted into the cushion packing, and the shoe of the valve portion near the end of the stroke of a piston fixed to a piston rod. A fluid pressure cushion device that decelerates and stops a piston using fluid pressure that is temporarily contained by fitting into a cushion packing, a first magnet fixed to the piston, and a second magnet that is attracted to the first magnet. A magnet and a holder that is slidably attached to the piston rod and has a push rod for separating the second magnet from attraction with the first magnet near the end of the stroke of the piston, and the piston is moved by the attraction force between the magnets. and a magnetic cushion device that decelerates and stops the piston rod, and the valve body is equipped with a guide portion that guides the tip of the push rod, and is slidably attached to the piston rod. Fluid pressure cylinder with. 2. The fluid pressure device with a cushion device according to claim 1, wherein the cushion packing and the valve portion are constituted by an orifice and a valve member that are in contact with each other, and the valve body and the tip of the push rod are integrally connected. Cylinder.