JPS62171686U

JPS62171686U -

Info

Publication number: JPS62171686U
Application number: JP6015486U
Authority: JP
Priority date: 1986-04-23
Filing date: 1986-04-23
Publication date: 1987-10-30

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す縦断面図、
第２図は従来例の縦断面図である。２……ポンプ部、３……電動モータ、１０……
吸込口、１３……インペラ、１４……溝、１５…
…燃料圧送間隙、２１……アーマチユア、２１ａ
……係合面、２２……ジヨイント、２２ａ……係
合面、２５……スブリング。 FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention;
FIG. 2 is a longitudinal sectional view of a conventional example. 2... Pump section, 3... Electric motor, 10...
Suction port, 13... Impeller, 14... Groove, 15...
... Fuel pumping gap, 21 ... Armature, 21a
...Engagement surface, 22...Joint, 22a...Engagement surface, 25...Subring.

Claims

[Scope of utility model registration request]

An impeller rotatably driven by an electric motor is installed in a pump chamber formed in a pump housing having a suction port and a discharge port, and as the impeller rotates, fuel sucked from the suction port is transferred to the front and back surfaces of the impeller. A turbine type configured such that the fuel is pumped to the discharge port through a pumping gap formed between the circumferential wall of the pump chamber and the outer circumferential wall of the impeller by the rotational force of a plurality of grooves formed on the periphery of the pump chamber. In the fuel pump, one end of the armature of the electric motor and the impeller are engaged with the impeller through a joint that engages each other with their arcuate engagement surfaces, and the armature is engaged with the impeller through the engagement of the engagement surfaces of the joint with each other. 1. A turbine-type fuel pump, characterized in that the armature is mounted with play in the axial direction so that the armature can be disengaged, and is provided with a spring that biases the armature in a direction in which the engaging surfaces engage with each other.