JPS6298800U

JPS6298800U -

Info

Publication number: JPS6298800U
Application number: JP19028485U
Authority: JP
Priority date: 1985-12-12
Filing date: 1985-12-12
Publication date: 1987-06-23

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例を示す断面図、
第２図は同上実施例における要部断面図、第３図
は本考案の第２の実施例を示す断面図、第４図は
同上実施例における要部断面図、第５図は従来例
を示す断面図である。１……ポンプハウジング、２……ポンプ室、３
……吸込口、４……吐出口、５……インペラ、６
……シヤフト、８ａ，８ｂ……ベアリング、９…
…シール部材、１０……軸受室、１１……ドレン
孔、１５……チエツクバルブ、２２……ソレノイ
ドバルブ、２３……コントロールユニツト、２４
……チユーブ、２５……ボール弁。 FIG. 1 is a sectional view showing a first embodiment of the present invention;
Fig. 2 is a sectional view of a main part in the embodiment same as above, Fig. 3 is a sectional view showing a second embodiment of the present invention, Fig. 4 is a sectional view of a main part in the embodiment same as above, and Fig. 5 is a sectional view of a conventional example. FIG. 1...Pump housing, 2...Pump chamber, 3
... Suction port, 4 ... Discharge port, 5 ... Impeller, 6
...Shaft, 8a, 8b...Bearing, 9...
... Seal member, 10 ... Bearing chamber, 11 ... Drain hole, 15 ... Check valve, 22 ... Solenoid valve, 23 ... Control unit, 24
...Tube, 25...Ball valve.

Claims

[Scope of utility model registration request]

A pump chamber in a pump housing having an intake port and a discharge port is provided with an impeller that is attached to an end of a shaft rotationally driven by an engine,
The bearing device of the shaft is provided with a pump portion configured to forcefully send engine cooling water sucked in from the suction port to the discharge port by the rotational force of the impeller, and the bearing device of the shaft is connected to a bearing chamber adjacent to the pump chamber via a seal member. In a water pump for an internal combustion engine in which a drain hole communicating with the outside of the pump housing is opened in the bottom wall of the bearing chamber, only engine cooling water flows from the bearing chamber to the outside through the drain hole. A water pump for an internal combustion engine, characterized in that it is equipped with a one-way valve that allows.