JPH03179U

JPH03179U -

Info

Publication number: JPH03179U
Application number: JP1989059987U
Authority: JP
Priority date: 1989-05-24
Filing date: 1989-05-24
Publication date: 1991-01-07

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例である切換弁を示す
断面図である。１……積層形圧電素子、１ａ……固定端、１ｂ
……可動端、２……拡大機構、３……駆動部、４
……弁本体部、５……ねじ、６……第１の板ばね
（弾性体）、６ａ，７ａ，８ａ…固定端、６ｂ，
７ｂ，８ｂ……可動端、７……第２の板ばね（弾
性体）、８……第３の板ばね（弾性体）、９……
第１の梃子、９ａ，１０ａ，１１ａ……固定端、
９ｂ，１０ｂ，１１ｂ……可動端、１０……第２
の梃子、１１……第３の梃子、１２……入力ポー
ト、１２ａ……流通路、１３……出力ポート、１
３ａ……流通路、１４……排出ポート、１４ａ…
…流通路、１５……流体室、１６……板、１６ａ
……貫通孔、１７……ゴムベロフラム、１８……
ピン、１９……カラー、２０……弁棒（作動部材
）、２０ａ……スプリング、２１ａ，２１ｂ……
弁座、２２……ねじ、２３……押え板、２３ａ…
…貫通孔。 FIG. 1 is a sectional view showing a switching valve which is an embodiment of the present invention. 1...Laminated piezoelectric element, 1a...Fixed end, 1b
...Movable end, 2...Enlargement mechanism, 3...Drive unit, 4
...Valve body, 5...Screw, 6...First plate spring (elastic body), 6a, 7a, 8a...Fixed end, 6b,
7b, 8b...Movable end, 7...Second leaf spring (elastic body), 8...Third leaf spring (elastic body), 9...
First lever, 9a, 10a, 11a...fixed end,
9b, 10b, 11b...movable end, 10...second
Lever, 11... Third lever, 12... Input port, 12a... Distribution path, 13... Output port, 1
3a...Flow path, 14...Discharge port, 14a...
...Flow path, 15...Fluid chamber, 16...Plate, 16a
...Through hole, 17...Rubber velophram, 18...
Pin, 19... Collar, 20... Valve stem (operating member), 20a... Spring, 21a, 21b...
Valve seat, 22... screw, 23... holding plate, 23a...
...Through hole.

Claims

[Claims for Utility Model Registration] 1. A valve comprising a laminated piezoelectric element that is displaced by application of a driving voltage and an actuating member that is actuated in accordance with the displacement of the laminated piezoelectric element, the valve comprising: An expansion mechanism including a plurality of first to nth elastic bodies and a lever is interposed between the element and the actuating member, fixed ends of the plurality of elastic bodies are fixed to the main body, and each of the elastic bodies The fixed end of each of the levers is fixed to one side of the movable end of the body, the movable end of the piezoelectric element is brought into contact with the other side of the movable end of the first elastic body, and the movable end of the first lever is in contact with the other surface of the movable end of the second elastic body, ..., the movable end of the n-1th lever is in contact with the other surface of the movable end of the n-th elastic body, The movable end of the n-th lever is linked to the actuating member, and the minute displacement amount of the laminated piezoelectric element is expanded by the first to n-th levers, thereby driving the actuating member. A valve using a laminated piezoelectric element characterized by: 2. The drive unit including the laminated piezoelectric element and the valve body unit including the actuating member are formed separately, and the piezoelectric element is isolated from the fluid pressure supplied to the valve body unit. A valve using the laminated piezoelectric element according to claim 1.