JPH0454994U

JPH0454994U -

Info

Publication number: JPH0454994U
Application number: JP9738790U
Authority: JP
Priority date: 1990-09-17
Filing date: 1990-09-17
Publication date: 1992-05-12
Anticipated expiration: 2005-09-17
Also published as: JPH088315Y2

Description

[Brief explanation of the drawing]

第１図ないし第８図は本考案の実施例を示し、
第１図は第２図中の矢示−線に沿つたタービ
ン型燃料ポンプの縦断面図、第２図は第１図の平
面図、第３図はフラツトコンミテータと回転子の
平面図、第４図は電動モータのフラツトコンミテ
ータを回転子と共に示す外観斜視図、第５図は回
転数検出センサの縦断面図、第６図イは電動モー
タの定格回転時における回転数検出センサの出力
波形を示す特性線図、第６図ロは電動モータの高
回転時時における回転数検出センサの出力波形を
示す特性線図、第６図ハは電動モータの定格回転
時でフラツトコンミテータの異常摩耗時における
回転数検出センサの出力波形を示す特性線図、第
７図はタービン型燃料ポンプの駆動回路構成図、
第８図は電動モータの回転数制御処理等を示す流
れ図、第９図ないし第１２図は従来技術を示し、
第９図は第１０図中の矢示−線に沿つたター
ビン型燃料ポンプの縦断面図、第１０図は第９図
の平面図、第１１図は電動モータのフラツトコン
ミテータを回転子と共に示す外観斜視図、第１２
図はタービン型燃料ポンプの駆動回路構成図であ
る。１……ケーシング本体、２……ポンプハウジン
グ、８……タービンベーン（ポンプロータ）、９
……エンドカバー、１５……電動モータ、１６…
…回転子、１９……ブラシ、２１……固定子、３
１……フラツトコンミテータ、３２……セグメン
ト、３２Ａ……ブラシ摺接面、３３……切欠き面
、３４……回転数検出センサ（回転数検出器）。 1 to 8 show embodiments of the present invention,
FIG. 1 is a longitudinal sectional view of the turbine-type fuel pump taken along the arrow line in FIG. 2, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a plan view of the flat commutator and rotor. Figure 4 is an external perspective view showing the flat commutator of the electric motor together with the rotor, Figure 5 is a vertical sectional view of the rotation speed detection sensor, and Figure 6 A is the output of the rotation speed detection sensor at the rated rotation of the electric motor. Figure 6 (b) is a characteristic diagram showing the output waveform of the rotation speed detection sensor when the electric motor is running at high speed. Figure 6 (c) is a characteristic diagram showing the output waveform of the rotation speed detection sensor when the electric motor is running at high speed. A characteristic line diagram showing the output waveform of the rotation speed detection sensor during wear, FIG. 7 is a drive circuit configuration diagram of a turbine-type fuel pump,
FIG. 8 is a flowchart showing the rotation speed control process of the electric motor, etc., and FIGS. 9 to 12 show the conventional technology,
Fig. 9 is a longitudinal cross-sectional view of the turbine-type fuel pump along the arrow line in Fig. 10, Fig. 10 is a plan view of Fig. 9, and Fig. 11 shows the flat commutator of the electric motor together with the rotor. Exterior perspective view shown, No. 12
The figure is a configuration diagram of a drive circuit of a turbine-type fuel pump. 1... Casing body, 2... Pump housing, 8... Turbine vane (pump rotor), 9
...End cover, 15...Electric motor, 16...
...Rotor, 19...Brush, 21...Stator, 3
1... Flat commutator, 32... Segment, 32A... Brush sliding contact surface, 33... Notch surface, 34... Rotation speed detection sensor (rotation speed detector).

Claims

[Scope of utility model registration request]

A casing body, a pump housing provided at one end of the casing body and rotatably housing a pump rotor therein, an end cover provided at the other end of the casing body, and a pump housing that rotatably drives the pump rotor. In the fuel pump, the electric motor is provided in a casing body and includes a stator, a rotor, a flat commutator integrally formed with the rotor, and brushes, the flat commutator of the electric motor having each segment. A notch is provided between the flat commutators and extends in the radial direction to a sliding contact area with the brush. A fuel pump characterized in that a rotation speed detector for detecting the rotation speed of the electric motor is provided.