JPH0221301U

JPH0221301U -

Info

Publication number: JPH0221301U
Application number: JP10100988U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1990-02-13

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す一部断面の分解
斜視図、第２Ａ図ないし第２Ｆ図はそれぞれ初期
状態と動作過程を示す断面図である。１０…第２のシリンダ部、２１…ヘツドカバー
、２２…第１のシリンダ部、２３…配管継手、２
４…第１のピストン、２５…第２のピストン、３
１…第３のピストン、３２…ばね受け円板、３３
…ロツドカバー、３４…ばね、４０…ねじ。 FIG. 1 is a partially sectional exploded perspective view showing an embodiment of the present invention, and FIGS. 2A to 2F are sectional views showing an initial state and an operating process, respectively. DESCRIPTION OF SYMBOLS 10... Second cylinder part, 21... Head cover, 22... First cylinder part, 23... Piping joint, 2
4...first piston, 25...second piston, 3
1...Third piston, 32...Spring receiving disc, 33
...rod cover, 34...spring, 40...screw.

Claims

[Claims for Utility Model Registration] Three pistons, first, second, and third, are housed in a pneumatic cylinder, and the rod of the third piston acts on a hydraulic system connected to the rod cover of the cylinder. The pneumatic-hydraulic converter is configured such that: (a) the cylinder has a first cinder part provided with a head cover at one end; one end is connected to the other end of the first cylinder part; (b) The first cylinder part has a first space and a second space separated by a partition wall provided in the middle part, and , the two spaces communicate through a hole penetrating the center of the partition wall, and the partition wall has an exhaust passage that opens to the outer peripheral surface of the first cylinder portion at an appropriate position of the hole, and (c) the second cylinder portion is made of a hollow cylindrical body; (d) the The first piston is disposed corresponding to the first space of the first cylinder part, and has a hole passing through the center of the piston, and the hole has a large diameter near the bottom, and the second piston has a larger diameter at the bottom and is fitted reciprocally into the second cylinder, (e) the second piston has a rod having a head, a neck, a body and a leg. The neck portion includes a conical surface portion corresponding to the conical surface of the first cylinder portion and a wrapper-shaped portion constricted at the center. the body has a diameter corresponding to the hole in the first cylinder part, the leg has a smaller diameter than the body corresponding to the through hole of the first piston, and the leg has a diameter that corresponds to the hole in the first cylinder part; The tip of the rod is inserted into a hole near the bottom of the through hole, and a passage entrance provided on a side surface of the tip communicates with an outlet at the center of the head via a passage provided at the center of the rod. (F) The third piston has a rod attached to the center of a head provided with a hole, the head is arranged to correspond to the hole in the bottom of the first piston, and the tip of the rod is A pneumatic-hydraulic conversion device, characterized in that it is fitted into the hydraulic system connected to the rod cover of the second cylinder section, and is equipped with a spring between the head and the rod cover.