JPH0321511U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す水平断面図、
第２図は従来例を示す水平断面図、第３図は従来
の油圧スイツチを示す縦断側面図である。 １…弁支持体、２…供給側空間部、３…出口側
空間部、４…弁室、５…受圧面、６…通孔、７…
周壁、８…安全弁、１１…受圧面、１２…接点部
、１３…スイツチ弁、１６…固定接点、１９…安
全弁用スプリング、２０…スイツチ弁用スプリン
グ。 FIG. 1 is a horizontal sectional view showing an embodiment of the present invention;
FIG. 2 is a horizontal sectional view showing a conventional example, and FIG. 3 is a vertical sectional side view showing a conventional hydraulic switch. DESCRIPTION OF SYMBOLS 1... Valve support body, 2... Supply side space part, 3... Outlet side space part, 4... Valve chamber, 5... Pressure receiving surface, 6... Through hole, 7...
Peripheral wall, 8...Safety valve, 11...Pressure receiving surface, 12...Contact portion, 13...Switch valve, 16...Fixed contact, 19...Spring for safety valve, 20...Spring for switch valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] フイルタエレメントが設けられた油路と、この
油路の供給側に連通された供給側空間部と出口側
に連通する出口側空間部とが近接配置されるとと
もに一端が前記供給側空間部に連通され側方が前
記出口側空間部に連通された弁室が形成された弁
支持体と、前記供給側空間部に対向する受圧面と
この受圧面の中央部に開口する通孔と前記出口側
空間部を閉塞する周壁とを有して前記弁室に摺動
自在に嵌合された安全弁と、この安全弁を前記供
給側空間部側に付勢する安全弁用スプリングと、
前記安全弁とは反対側の端部に配置されて前記弁
室に固定された固定接点と、前記安全弁の前記通
孔に対向する受圧面と前記固定接点に対向する接
点部とを有して前記弁室に摺動自在に設けられた
スイツチ弁と、前記安全弁用スプリングの圧力よ
り弱い圧力に設定されて前記スイツチ弁を前記安
全弁側に付勢するスイツチ弁用スプリングとより
なることを特徴とするフイルタ目詰まり検出装置
。 An oil passage provided with a filter element, a supply side space communicating with the supply side of the oil passage, and an outlet side space communicating with the outlet side are arranged close to each other, and one end communicates with the supply side space. a valve support in which a valve chamber is formed and the side thereof communicates with the outlet side space, a pressure receiving surface facing the supply side space, a through hole opening in the center of this pressure receiving surface, and the outlet side. a safety valve that has a peripheral wall that closes a space and is slidably fitted into the valve chamber; a safety valve spring that urges the safety valve toward the supply side space;
a fixed contact disposed at an end opposite to the safety valve and fixed to the valve chamber; a pressure receiving surface facing the through hole of the safety valve; and a contact portion facing the fixed contact; It is characterized by comprising a switch valve slidably provided in a valve chamber, and a switch valve spring that is set at a pressure lower than the pressure of the safety valve spring and biases the switch valve toward the safety valve side. Filter clogging detection device.