JPS6240277U

JPS6240277U -

Info

Publication number: JPS6240277U
Application number: JP13107085U
Authority: JP
Priority date: 1985-08-28
Filing date: 1985-08-28
Publication date: 1987-03-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の断面図、第２図は
要部の寸法の説明図、第３図ないし第５図は第１
図のものの作用説明図、第６図ないし第１１図は
従来のものを示す斜視図である。図中、２はオイルタンク、４はバルブシリンダ
ー、５はメインシリンダー、８はバルブプランジ
ヤー、９はメインプランジヤー、１０は第１の連
通路、１１は第２の連通路、１２はオイル吐出口
、１３はメインシリンダー側オイル吸込口、１４
はクランクシヤフト、１５はウオームギヤ、１６
はウオームホイール、１７，１８は偏心輪、１９
，２０はコネクテイングロツド、２３は細径部、
２５はランド部を示す。 Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is an explanatory diagram of the dimensions of the main parts, and Figs.
FIGS. 6 to 11 are perspective views showing the conventional structure. In the figure, 2 is an oil tank, 4 is a valve cylinder, 5 is a main cylinder, 8 is a valve plunger, 9 is a main plunger, 10 is a first communication passage, 11 is a second communication passage, and 12 is an oil discharge. Outlet, 13 is the main cylinder side oil suction port, 14
is the crankshaft, 15 is the worm gear, 16
is a worm wheel, 17 and 18 are eccentric wheels, 19
, 20 is a connecting rod, 23 is a small diameter part,
25 indicates a land portion.

Claims

[Scope of utility model registration request]

a main cylinder with a closed tip, a valve cylinder provided parallel to the main cylinder and connected to an oil tank at the tip, a first communication passage communicating the vicinity of the tip of the main cylinder and the valve cylinder; a second communication passage that communicates the main cylinder and the valve cylinder at a proximal end side of the first communication passage; and a main communication passage that connects a proximal end side of the main cylinder from the second communication passage to an oil tank. a cylinder-side oil suction port; an oil discharge port provided on a base end side of the second communication path of the valve cylinder;
The main cylinder is slidably fitted into the main cylinder from the proximal end of the main cylinder, opens the main cylinder oil suction port at the proximal stroke end, and opens the second oil suction port at the distal stroke end.
a main plunger that almost closes the communication passage of the
A valve plunger is slidably fitted into the valve cylinder from the base end of the valve cylinder, and a valve plunger is formed in the longitudinal middle of the valve plunger so that the oil discharge port is inserted into the valve cylinder during the entire stroke of the valve plunger. a narrow diameter portion having a length to open; and a narrow diameter portion formed on the distal side of the narrow diameter portion of the valve plunger to close the first communicating path near the stroke end on the distal end side of the valve plunger. A communication passage is opened in the valve cylinder, and near the stroke end on the proximal side of the valve plunger, the first communication passage is opened into the valve cylinder, and the second communication passage is closed. In the middle of the stroke, the first
and a land portion having a length that closes both the communication path and the second communication path, and the main plunger and the valve plunger are caused to reciprocate by setting the main plunger in a phase that lags the valve plunger. A refueling pump characterized by being equipped with a plunger drive device.