JPS6436771U

JPS6436771U -

Info

Publication number: JPS6436771U
Application number: JP13189587U
Authority: JP
Priority date: 1987-08-28
Filing date: 1987-08-28
Publication date: 1989-03-06

Description

[Brief explanation of drawings]

第１図ないし第３図は本考案の実施例を示し、
第１図は全体断面図、第２図は第１図における
―線断面図、第３図イ，ロ，ハは夫々作動状態
を示す図である。第４図イ，ロは本考案の別実施
例を示す作動状態図である。第５図イ，ロは従来
の回転弁における作動状態を示す図である。１……弁箱、２……回転弁、４……弁座、６…
…ローラ、７……カムプレート、８……凹部、９
……微少隙間。 1 to 3 show embodiments of the present invention,
FIG. 1 is an overall sectional view, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. FIGS. 4A and 4B are operating state diagrams showing another embodiment of the present invention. FIGS. 5A and 5B are diagrams showing the operating state of a conventional rotary valve. 1...Valve box, 2...Rotary valve, 4...Valve seat, 6...
...roller, 7...cam plate, 8...recess, 9
...Minute gap.

Claims

[Scope of utility model registration request]

A valve seat 4 on the side of the valve box 1 is provided so as to be movable in the distance direction with respect to the rotary valve body 2 and biased toward the approach side, and either the valve seat 4 or the rotary valve body 2 A roller 6 is attached to one side, and a cam plate 7 that acts on the roller 6 is attached to the other side, and by these rollers 6 and cam plate 7,
With the rotation switching operation of the rotary valve body 2, when the rotary valve body 2 is in the switching position, the valve seat 4 is allowed to move toward the rotary valve body 2 by the approach biasing force, and the rotary valve body 2, and when the rotary valve body 2 is at an intermediate position in the middle of switching, the valve seat 4 is separated from the rotary valve body 2 against the approach urging force. The rotary valve is a rotary valve formed with a cam mechanism for operating the valve seat that acts to maintain the valve seat, and the cam surface of the cam plate 7 faces the roller 6 when the rotary valve body 2 is in the switching position. The roller 6
A recess 8 having an opening width into which a part or all of the rotary valve body 2 can enter is formed, and when the rotary valve body 2 is in the switching position and the valve seat 4 and the rotary valve body 2 are in contact with each other, the concave portion 8 and The cam plate is arranged so that a minute gap 9 is formed between it and the roller 6 facing it, and as the rotary valve body 2 is removed from the switching position and the recess 8 is removed from the position facing the roller 6. A rotary valve in which the cam plate 7, the roller 6, and the recess 8 are arranged relative to each other such that the cam plate 7 starts a contact action against the roller 6.