JPS62783U

JPS62783U -

Info

Publication number: JPS62783U
Application number: JP9397885U
Authority: JP
Priority date: 1985-06-20
Filing date: 1985-06-20
Publication date: 1987-01-06

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す一部断面正
面図である。第２図は従来の構成を示す正断面図
である。図中１はヨーク、２はプランジヤ受け、３は電
磁コイル、４は導磁板、５はプランジヤ、６はシ
ヤフト、７はダイヤフラム、８はクツシヨン材、
９はフランジ、１３はポンプ本体、１７は第１ポ
ンプ室、１８は第２ポンプ室、１９は第３ポンプ
室、２０は吸入ポート、２１は吐出ポート、２２
は吸入弁、２３は吐出弁、３１はリリーフ弁、３
２はリリーフばね、３３は小孔、３４はプレート
、３５は弁座、３６はケースである。なお、図中
、同一符号はそれぞれ相当部分を示す。 FIG. 1 is a partially sectional front view showing an embodiment of this invention. FIG. 2 is a front sectional view showing a conventional configuration. In the figure, 1 is a yoke, 2 is a plunger receiver, 3 is an electromagnetic coil, 4 is a magnetic conductive plate, 5 is a plunger, 6 is a shaft, 7 is a diaphragm, 8 is a cushion material,
9 is a flange, 13 is a pump body, 17 is a first pump chamber, 18 is a second pump chamber, 19 is a third pump chamber, 20 is a suction port, 21 is a discharge port, 22
is a suction valve, 23 is a discharge valve, 31 is a relief valve, 3
2 is a relief spring, 33 is a small hole, 34 is a plate, 35 is a valve seat, and 36 is a case. In addition, in the figures, the same reference numerals indicate corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A first pump chamber having a fuel intake port and a diaphragm responsive to a reciprocating mechanism,
a second pump chamber configured to be able to increase or decrease in volume, and which sucks fuel from the first pump chamber through a suction valve that operates in accordance with the increase or decrease in the volume; and a second pump chamber that operates in accordance with the increase or decrease in the volume. A third pump chamber has a discharge port that introduces fuel into the second pump chamber through a discharge valve and discharges the fuel to the outside.
the first pump chamber and the third pump chamber.
A reciprocating pump characterized in that a small hole and a relief valve that opens and closes at a constant pressure are provided between the pump chamber and the pump chamber. (2) The reciprocating pump according to claim 1, wherein the relief valve comprises a valve seat and a spring that presses the valve body against the valve seat.