JPH0454988U

JPH0454988U -

Info

Publication number: JPH0454988U
Application number: JP9739090U
Authority: JP
Priority date: 1990-09-17
Filing date: 1990-09-17
Publication date: 1992-05-12

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案の実施例を示し、
第１図は燃温が低温時の下側板等を示す断面図、
第２図は第１図中の矢示−方向断面図、第３
図は燃温が高温時の下側板等を示す第１図と同様
の断面図、第４図は第３図中の矢示−方向断
面図、第５図ないし第８図は従来技術を示し、第
５図はローラベーン型燃料ポンプを示す第６図中
の矢示−線に沿つた断面図、第６図は第５図
中の矢示−方向拡大断面図、第７図は第６図
中の矢示−方向断面図、第８図はローラベー
ン型燃料ポンプのポンプハウジング等を示す分解
斜視図である。１……ケーシング、２……上側カバー、４……
ポンプハウジング、６……上側板、６Ａ……吐出
口、８……カムリング、１１……電動モータ、１
８……ポンプロータ、１９……ローラ、３１……
下側板、３１Ａ……摺接面、３１Ｂ……吸込口、
３１Ｅ……吸込み用段部、３１Ｆ……取付部、３
２……流状調整板。 1 to 4 show embodiments of the present invention,
Figure 1 is a sectional view showing the lower plate etc. when the fuel temperature is low;
Figure 2 is a sectional view in the direction of the arrow in Figure 1;
The figure is a cross-sectional view similar to Figure 1 showing the lower plate etc. when the fuel temperature is high, Figure 4 is a cross-sectional view in the direction indicated by the arrow in Figure 3, and Figures 5 to 8 show the prior art. , FIG. 5 is a sectional view along the arrow line in FIG. 6 showing a roller vane type fuel pump, FIG. 6 is an enlarged sectional view in the direction of the arrow in FIG. 5, and FIG. 7 is an enlarged sectional view in the direction of the arrow in FIG. 8 is an exploded perspective view showing the pump housing and the like of the roller vane type fuel pump. 1... Casing, 2... Upper cover, 4...
Pump housing, 6... Upper plate, 6A... Discharge port, 8... Cam ring, 11... Electric motor, 1
8...Pump rotor, 19...Roller, 31...
Lower side plate, 31A...Sliding surface, 31B...Suction port,
31E...Suction step part, 31F...Mounting part, 3
2...Flow adjustment plate.

Claims

[Scope of utility model registration request]

A cylindrical casing, an upper cover provided at one end of the casing, a lower plate provided at the other end of the casing in which a fuel inlet is formed, an upper plate in which a fuel discharge port is formed, and the upper cover provided at one end of the casing. a pump housing consisting of a cam ring held between a lower plate and an upper plate; an electric motor located within the casing and located between the pump housing and the upper cover; a lower plate of the pump housing;
a pump rotor located between the upper plates, disposed within the cam ring, and rotated by the electric motor;
A plurality of rollers are provided on the outer circumferential side of the pump rotor and perform a pumping action within the pump housing together with the pump rotor when the pump rotor rotates, and a sliding contact surface of each roller with the lower plate of the pump housing. In a roller vane type fuel pump, the suction step is located at a position in front of the suction port in the rotational direction of the pump rotor and communicates with the suction port. A roller vane type fuel pump characterized by being provided with a temperature-sensitive flow control plate that adjusts the flow of fuel sucked into a pump housing from a suction port based on the temperature of the fuel.