JPS6297307U

JPS6297307U -

Info

Publication number: JPS6297307U
Application number: JP18942085U
Authority: JP
Priority date: 1985-12-09
Filing date: 1985-12-09
Publication date: 1987-06-20

Description

[Brief explanation of the drawing]

第１図および第２図は本考案の第１の実施例を
示し、第１図はシリンダ装置の縦断面図、第２図
は第１図中の矢示―方向断面図、第３図は本
考案の第２の実施例を示す第２図と同様の断面図
、第４図は本考案の第３の実施例を示す第２図と
同様の断面図、第５図は従来技術によるシリンダ
装置を示す縦断面図、第６図は他の従来技術によ
るシリンダ装置を示す断面図である。３１，４１，５１……チユーブ、３２，４２，
５２……内筒、３３，４３，５４……外筒、３４
……細長管、３４Ａ……通路、３６……ピストン
、３７……磁性体リング（第１の磁性体）、３８
……被検出体（第２の磁性体）、３９……センサ
、５３……中間筒。 1 and 2 show a first embodiment of the present invention, FIG. 1 is a longitudinal cross-sectional view of the cylinder device, FIG. 2 is a cross-sectional view in the direction indicated by the arrow in FIG. 1, and FIG. FIG. 4 is a sectional view similar to FIG. 2 showing a second embodiment of the present invention, FIG. 4 is a sectional view similar to FIG. 2 showing a third embodiment of the present invention, and FIG. 5 is a cylinder according to the prior art. FIG. 6 is a longitudinal sectional view showing the device, and FIG. 6 is a sectional view showing another conventional cylinder device. 31,41,51...Tube, 32,42,
52... Inner cylinder, 33, 43, 54... Outer cylinder, 34
... Elongated tube, 34A ... Passage, 36 ... Piston, 37 ... Magnetic ring (first magnetic material), 38
...Object to be detected (second magnetic body), 39...Sensor, 53...Intermediate cylinder.

Claims

[Claims for Utility Model Registration] (1) A tube that constitutes a cylinder, a piston that is slidably inserted into the tube, and a piston that is embedded in the outer circumferential side of the piston, and the inside of the tube is integrated with the piston. a first magnetic body that is displaced in the tube; a passage located in the tube and extending in the axial direction of the tube; and a passage provided so as to be movable within the passage, when the piston is slidably displaced within the tube. , a second magnetic body that is displaced within the passage in response to displacement of the first magnetic body, and a detection means provided at one end of the passage to detect the position of the second magnetic body. A cylinder device consisting of. (2) The tube consists of an inner cylinder made of a reinforced plastic material and an outer cylinder made of a reinforced plastic material and tightly attached to the outer circumferential surface of the inner cylinder, and the passage is connected to the inner cylinder. 2. A cylinder device according to claim (1), which is formed by a non-magnetic elongated tube located on the outer peripheral side of the inner cylinder and provided in the inner cylinder. (3) The tube consists of an inner cylinder made of a reinforced plastic material and an outer cylinder made of a reinforced plastic material and tightly attached to the outer peripheral surface of the inner cylinder, and the passage is connected to the outer cylinder. 2. A cylinder device according to claim (1), which is formed by a non-magnetic elongated tube embedded in a cylinder. (4) The tube includes an inner cylinder made of a reinforced plastic material, an intermediate cylinder formed of a prepreg made of a reinforced plastic material and provided in close contact with the outer peripheral surface of the inner cylinder, and a reinforced plastic material. and an outer cylinder formed by the intermediate cylinder and in close contact with the outer circumferential surface of the intermediate cylinder, and the passageway is formed by a non-magnetic elongated tube provided in the intermediate cylinder. The cylinder device described in (1). (5) The cylinder device according to any one of claims (1) to (4), wherein at least one of the first and second magnetic bodies is formed of a permanent magnet.