JPH0322177U - - Google Patents

Description

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

第１図は本考案に係る逆止弁の一実施例を示す
断面図、第２図は従来の逆止弁を示す断面図であ
る。 １……逆止弁、２……バルブ本体、４……弁室
、５……弁体、６……インレツトポート、７……
戻しばね、８……バルブ部、８ａ……一端面、９
……アウトレツトポート、１１……シート部、１
２……周溝、１３……凹部、１４……弁座面。 FIG. 1 is a sectional view showing an embodiment of a check valve according to the present invention, and FIG. 2 is a sectional view showing a conventional check valve. 1... Check valve, 2... Valve body, 4... Valve chamber, 5... Valve body, 6... Inlet port, 7...
Return spring, 8... Valve portion, 8a... One end surface, 9
... Outlet port, 11 ... Seat section, 1
2... Circumferential groove, 13... Concave portion, 14... Valve seat surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 弾性材料から成る弁体をバルブ本体の弁室内に
収納配置すると共に、前記弁体の一端面に環状に
延びるように形成されたシート部を戻しばねの附
勢力にて前記バルブ本体の弁座面に圧着する方向
に常時附勢し、前記バルブ本体のインレツトポー
トに供給される流体の圧力によつて前記弁体を前
記戻しばねの附勢力に抗して開弁位置に移動させ
るように構成した逆止弁において、前記弁体のう
ち前記シート部側の一端面であつてかつ前記シー
ト部にて囲まれた部分に、凹部を設けたことを特
徴とする逆止弁。 A valve body made of an elastic material is housed in a valve chamber of a valve body, and a seat portion formed to extend annularly on one end surface of the valve body is returned to the valve seat surface of the valve body by the urging force of a spring. The valve body is always energized in the direction of crimping the valve body, and is configured to move the valve element to the valve open position against the energizing force of the return spring by the pressure of the fluid supplied to the inlet port of the valve body. A check valve characterized in that a recessed portion is provided in a portion of the valve body at one end surface on the seat portion side and surrounded by the seat portion.