JPH0435665U

JPH0435665U -

Info

Publication number: JPH0435665U
Application number: JP7836190U
Authority: JP
Priority date: 1990-07-24
Filing date: 1990-07-24
Publication date: 1992-03-25

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の実施例を示し、
第１図はブラシ、コンミテータ等を拡大して示す
燃料ポンプの要部横断面図、第２図は第１図中の
矢示−方向拡大断面図、第３図は摩耗検出手
段等の電気回路図、第４図ないし第６図は従来技
術を示し、第４図は燃料ポンプの縦断面図、第５
図は第４図中の矢示−方向断面図、第６図は
第５図中の矢示−方向拡大断面図である。２……ケーシング本体、３……上カバー、４…
…ポンプ部、９……吸込口、１０……吐出口、１
１……電動モータ、１２……回転子、１４……固
定子、１５……コンミテータ、２２……スプリン
グ、３１……ブラシホルダ、３３……ブラシ、３
４……筒状突起（一側接点）、３５……摩耗検出
手段、３６……リベツト（他側接点）、３９……
警告ランプ（摩耗警告手段）。 1 to 3 show embodiments of the present invention,
Figure 1 is an enlarged cross-sectional view of the essential parts of the fuel pump showing the brushes, commutator, etc., Figure 2 is an enlarged cross-sectional view in the direction of the arrow in Figure 1, and Figure 3 is the electrical circuit of the wear detection means, etc. 4 to 6 show the prior art, FIG. 4 is a vertical sectional view of the fuel pump, and FIG.
This figure is a cross-sectional view in the direction of the arrow in FIG. 4, and FIG. 6 is an enlarged cross-sectional view in the direction of the arrow in FIG. 2...Casing body, 3...Top cover, 4...
...Pump part, 9...Suction port, 10...Discharge port, 1
DESCRIPTION OF SYMBOLS 1... Electric motor, 12... Rotor, 14... Stator, 15... Commutator, 22... Spring, 31... Brush holder, 33... Brush, 3
4... Cylindrical projection (one side contact), 35... Wear detection means, 36... Rivet (other side contact), 39...
Warning lamp (wear warning means).

Claims

[Claims for Utility Model Registration] (1) A casing body, an upper cover provided by closing one end side of the casing body, and a top cover provided at the other end side of the casing body from the suction port. a pump unit that discharges the sucked fuel into the casing body from a discharge port; a rotor provided within the casing body to rotationally drive the pump unit;
An electric motor consisting of a stator, a commutator, and a brush, a brush holder provided on the upper cover to slidably hold the brush of the electric motor, and a brush holder provided slidably within the brush holder. In a fuel pump consisting of a spring that constantly biases a brush toward a commutator, in order to detect the wear limit between the brush and the commutator, a contact point provided on one side of the brush and a spring that urges the brush toward the commutator are used. A fuel pump characterized in that the fuel pump is equipped with a wear detection means comprising a contact on the other side provided on the brush holder so as to contact the contact on the one side and conduct electricity when the brush holder slides over a fixed amount. (2) A utility model registration request characterized in that a wear warning means is provided which is activated when a contact on one side and a contact on the other side of the wear detection means are electrically connected to detect a wear limit of the brush or commutator. range(1
Fuel pump described in ).