JPS63183387U - - Google Patents

Description

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

第１図から第４図は本考案の一実施例であり、
第１図は平面図、第２図は第１図のＡ―Ｂ断面図
、第３図は第１図のＢ―Ｃ断面図、第４図は本体
の平面図であり、第５図は従来技術を示す断面図
である。 ２２…燃料吐出通路、２３…チエツク弁、３０
…燃料吸入室、３１…燃料吸入通路、３２…燃料
流路、３３…燃料ポンプ室、３５…燃料吐出室、
３９…本体、４３…燃料室。 Figures 1 to 4 show an embodiment of the present invention,
Fig. 1 is a plan view, Fig. 2 is a sectional view taken along the line A-B in Fig. 1, Fig. 3 is a sectional view taken along B-C in Fig. 1, Fig. 4 is a plan view of the main body, and Fig. 5 is a sectional view taken along the line B-C in Fig. 1. FIG. 2 is a cross-sectional view showing a conventional technique. 22...Fuel discharge passage, 23...Check valve, 30
...Fuel suction chamber, 31...Fuel suction passage, 32...Fuel flow path, 33...Fuel pump chamber, 35...Fuel discharge chamber,
39...Main body, 43...Fuel chamber.

Claims (1)

【実用新案登録請求の範囲】 板状のチエツク弁を有するダイヤフラム式燃料
ポンプにおいて、 本体に燃料吸入室・燃料室・燃料吐出室を形成
し、該燃料室及び燃料吐出室には燃料ポンプ室と
連通する燃料流路及び燃料吐出通路を形成し、一
方燃料吸入室と燃料室は燃料吸入通路によつて連
通され、該燃料吸入通路の燃料室側開口部及び前
記燃料吐出通路の燃料吐出室側開口部に１枚の板
状のチエツク弁を設け、かつ該チエツク弁の弁体
押圧具によつて燃料室と燃料吐出室とを気密状態
で分割したことを特徴とするダイヤフラム式燃料
ポンプ。[Scope of claim for utility model registration] A diaphragm fuel pump having a plate-shaped check valve, in which a fuel suction chamber, a fuel chamber, and a fuel discharge chamber are formed in the main body, and the fuel chamber and the fuel discharge chamber include a fuel pump chamber and a fuel pump chamber. A fuel flow path and a fuel discharge passage are formed that communicate with each other, and a fuel suction chamber and a fuel chamber are communicated with each other by a fuel suction passage, and an opening on the fuel chamber side of the fuel suction passage and an opening on the fuel discharge chamber side of the fuel discharge passage. A diaphragm fuel pump characterized in that a plate-shaped check valve is provided at the opening, and a fuel chamber and a fuel discharge chamber are separated in an airtight manner by a valve pressing tool of the check valve.