JPH0373658U

JPH0373658U -

Info

Publication number: JPH0373658U
Application number: JP13661989U
Authority: JP
Priority date: 1989-11-24
Filing date: 1989-11-24
Publication date: 1991-07-24
Anticipated expiration: 2004-11-24
Also published as: JPH0749003Y2

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図は給油
切替えバルブの縦断面図、第２図は第１図の−
線断面図、第３図はバルブフラツパとその操作
機構との関連を表した外観斜視図、第４図及び第
５図はバルブ切替え操作に伴う操作機構及びバル
ブフラツパの動きを第１図との対応によつて表し
たそれぞれの断面図、第６図はバルブシートに対
する押付け荷重と気密圧力との関係を表した特性
図、第７図は同じく気密圧力と操作荷重との関係
を表した特性図である。１２……給油通路、１６……副給油通路、１８
……バルブシート、２４……バルブフラツパ、４
０……操作機構、４２……シヤフト、４５……ス
トツパ、５０……連結ロツド、５０Ａ……第一ロ
ツド、５０Ｂ……第二ロツド、５２，５８……ピ
ン、６０……弾性体（コイルスプリング）。 The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of the refueling switching valve, and FIG.
3 is an external perspective view showing the relationship between the valve flapper and its operating mechanism, and FIGS. 4 and 5 show the movement of the operating mechanism and valve flapper associated with valve switching operations in correspondence with FIG. 1. 6 is a characteristic diagram showing the relationship between the pressing load on the valve seat and the airtight pressure, and FIG. 7 is a characteristic diagram showing the relationship between the airtight pressure and the operating load. . 12... Fuel supply passage, 16... Sub-oil supply passage, 18
... Valve seat, 24 ... Valve flap, 4
0... Operating mechanism, 42... Shaft, 45... Stopper, 50... Connection rod, 50A... First rod, 50B... Second rod, 52, 58... Pin, 60... Elastic body (coil) spring).

Claims

[Claim for Utility Model Registration] An auxiliary refueling passage leading to the auxiliary fuel tank is branched from a part of the refueling passage leading to the main fuel tank, and a valve seat is constructed around the entrance to the auxiliary fuel passage. In the refueling switching valve, a valve flapper is pressed against a valve seat to close a sub-lubrication passage, and an external switching operation causes the valve flapper to be rotated to a state where the sub-lubrication passage is opened through an operating mechanism, wherein the operating mechanism is , a shaft that rotates in conjunction with an external switching operation, and a stopper that rotates together with the shaft to regulate the rotation angle of the shaft;
a connecting rod that transmits the rotation of the shaft to the valve flapper, the connecting rod having a first rod connected to the shaft side with a pin, and a second rod connected to an approximately central portion of the valve flapper with a pin. The first and second rods are connected to each other so as to transmit a pressing force to the valve flapper through an elastic body assembled between them, and the operating mechanism moves the valve flapper to the valve seat. The rotation of the shaft when operated in the pressed state is regulated by the stopper, and in this state, the shaft, the pin on the first rod side, and the pin on the second rod side are both aligned in a straight line. and is set so that an imaginary straight line connecting these is perpendicular to the valve seat.