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1. 发明专利

JPS62139963A FUEL FEEDING DEVICE FOR VEHICLE 失效
公开(公告)号：JPS62139963A
公开(公告)日：1987-06-23
申请号：JP28004685
申请日：1985-12-12
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO , YAMAMOTO KIYOKAZU
IPC分类号： F02M37/10 , F02M37/00 , F02M37/18
摘要： PURPOSE:To improve the installing property of a pump on a fuel tank and reduce a cost by providing a motor driven two-stage fuel pump and an inter- vessel transfer pipe which is connected to a second vessel, on the first vessel of a two vessel type fuel tank. CONSTITUTION:When the motor of a motor driven fuel pump 2 is operated while an engine is operated, the impellers and rotors of first and second pump stages are rotated. And, fuel in the first vessel A side of a fuel tank 1 flows into the first pump stage from a strainer 16 via a suction port 15 and, passing through a discharge port and the inside of a body, is sent under pressure to a fuel system 26 via a discharge pipe 8 and a fuel feed piping 25. On the second pump stage side, on the other hand, fuel in a second vessel B flows into the second pump stage via a strainer 24, a suction port 23, an inter-vessel transfer pipe 20, and a suction port 19, and is discharged into the first vessel A via a discharge port provided on the end over of the fuel pump 2, thus, carrying out the inter-vessel transfer of fuel.

2. 发明专利

JPS61254060A STROKE TYPE STEPPING MOTOR 失效
公开(公告)号：JPS61254060A
公开(公告)日：1986-11-11
申请号：JP9366285
申请日：1985-05-02
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： TSUKAHARA AKIHIKO , HIRATSUKA KO
IPC分类号： H02K37/24 , H02K7/06 , H02K37/14
摘要： PURPOSE:To shorten the axial length of the rotational shaft of a rotor by disposing rotation preventing means of a lead screw and external force bearing means coupled with one end of the screw in a recess formed on the rotor in the axial direction. CONSTITUTION:A rotor 3 is rotatably supported in stators 2-a-1-d. The rotor 3 is secured to an end bracket 4 without fluctuation, and supported to a slide bearing 6 press-fitted to a slide bearing housing 5-1 of a casing 5. The rotor 3 is formed in a recess shape, and a lead screw 7 and an external force bearing member 8 are disposed in the rotor 3. The screw 7 and the member 8 are integrally coupled, and the member 8 is unrotatably and axially slidably supported. When the rotor 3 rotates by a revolving magnetic field by the stators 1, the screw 7 and the member 8 axially slide.

3. 发明专利

JPS61175297A MOTOR FUEL PUMP FOR VEHICLE 失效
公开(公告)号：JPS61175297A
公开(公告)日：1986-08-06
申请号：JP1765185
申请日：1985-01-31
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO , TACHIBANA KANJI
IPC分类号： F02M37/10 , F04D5/00
摘要： PURPOSE:To recover self-suction performance by providing a groove section communicatable to the delivery section of an annular groove path on liquid-seal section and a vent communicating from said groove section to the outside thereby discharging the residual gasified fuel to the outside of pump in short time. CONSTITUTION:In an annular groove path 5 from a suction port 4 to the delivery section 8, the gasified fuel 14 having high fuel density is flowing along the outercircumferential wall 10 of said path 5 while rotating in spiral then blocked by the liquid seal section 9 and collides against the delivery section 8. Here, the gasified fuel 14 is led to a groove 12 made on the liquid seal section 9 and discharging through a vent 11 made in the groove section 12 to the outside. With such arrangement, pumping function is effective between the suction hole 4 and the vent 11 through said path 5 thus to enter the fuel continuously into the suction hole 4 and to recover the self-suction performance. Consequently, the gasified fuel 14 having high fuel density and flowing along said outercircumference 10 will prevail over the surface tension functioning onto the vent 11 because of the fuel at the outside and discharged to the outside in short time.

4. 发明专利

JPS61254061A STROKE TYPE STEPPING MOTOR 失效
公开(公告)号：JPS61254061A
公开(公告)日：1986-11-11
申请号：JP9366385
申请日：1985-05-02
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO , TSUKAHARA AKIHIKO
IPC分类号： H02K37/24 , H02K7/06 , H02K37/14
摘要： PURPOSE:To obtain stable and accurate operation for a high load by eliminating the direct application of a force from a load to rotor by screw means and engaging means. CONSTITUTION:A rotor 3a having a magnet 2 is rotated through bearings 6a, 6b on the outer periphery of a shaft 4 press-fitted to an end cover 1 by revolving magnetic field of coils 16a, 16b in stators 15a, 12b. When a high load A is applied externally to a slider 10, a load is applied through a ball bearing 9 to the screw engaging portion 13 of a screw 14 with a shaft 12, but since the shaft 12 and the shaft 4 for rotating the rotor 3a are independent, no load is applied to the shaft 4.

5. 发明专利

JPS62142872A LIQUID LEVEL CONTROL DEVICE FOR 2-TANK TYPE FUEL TANK 失效
公开(公告)号：JPS62142872A
公开(公告)日：1987-06-26
申请号：JP28289485
申请日：1985-12-18
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO , TERAJIMA KUNIO
IPC分类号： F04B23/04
摘要： PURPOSE:To hold liquid levels in two tanks about at an equal value and to simplify constitution, by a method wherein a fuel pump is constituted in a 2-step system, and a 3-way electromagnetic valve is controlled through combination of the fuel pump and liquid level detectors located to two tanks in a fuel tank. CONSTITUTION:A fuel pump 4 is situated to either of left and right tanks 2 and 3, with which a fuel tank 1 is formed, and is formed with a first pump (reproduction type), adapted to feed with a pressure fuel to fuel systems 5-7, and a second pump (volume type), adapted to convey fuel from the tank 3 to the tank 2. Liquid level detectors 9 and 10 are situated in the tanks 2 and 3, respectively, and detected liquid levels in the tanks 2 and 3 are converted into an electric signal by means of converters 11 and 12, respectively. When the liquid level in the fuel tank 1 is lowered down to lower than L0, liquid level signals are compared with each other, and when a difference between the L and either of the liquid level signals is increased to a given value, an output signal is outputted to control ON-OFF of a 3-way electromagnetic valve 15. This constitution causes liquid levels in the tanks 2 and 3 to be held approximately at an equal level.

6. 发明专利

JPS62111193A FUEL PUMP DEVICE 失效
公开(公告)号：JPS62111193A
公开(公告)日：1987-05-22
申请号：JP24881685
申请日：1985-11-08
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO , YAMAMOTO KIYOKAZU
IPC分类号： F04D13/12
摘要： PURPOSE:To enable a feed of fuel to be performed in a two-tank type fuel tank, by providing the second pump which is driven by an outflow of fuel from the first pump of electric motor driven type to transfer the fuel in the second tank to be fed into the first tank. CONSTITUTION:An impeller 10, generating pumping action, forces fuel to be fed from a suction hole 9 to a draft hole 32. A part of the pressurized fuel is injected as a high speed jet stream in a nozzle part D, and fuel in a tank B can be transferred to be fed into a tank A from a suction pipe by generating a negative pressure. Consequently, a single pump suitable for being set in a two-tank type fuel tank can be obtained.

7. 发明专利

JPS62111191A MOTOR DRIVEN FUEL PUMP DEVICE FOR VEHICLE 失效
公开(公告)号：JPS62111191A
公开(公告)日：1987-05-22
申请号：JP25080985
申请日：1985-11-11
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO , YAMAMOTO KIYOKAZU
IPC分类号： F04D5/00 , F02M37/18
摘要： PURPOSE:To promote the cost down, by arranging impellers of a pump, which transfers fuel to be fed, in a common rotating surface between a pump, forcing fuel to be fed to a fuel line system, and a tank. CONSTITUTION:Fuel is allowed to flow in from a suction hole 5, and an impeller 9 forces the fuel to be fed from a delivery pipe 16 to a fuel line system. A blade part 11 forms the second pump arranged in the common rotating surface with a blade part 10 forming a pump of the impeller 9, and the fuel is discharged from a suction hole 12 to a discharge hole 17 by rotating the blade part 11. ¦Consequently, the cost down can be promoted with no necessity for providing two fuel pumps.

8. 发明专利

JPS61190192A MOTOR DRIVEN FUEL PUMP FOR CAR 失效
公开(公告)号：JPS61190192A
公开(公告)日：1986-08-23
申请号：JP3045485
申请日：1985-02-20
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO
IPC分类号： F04D5/00
摘要： PURPOSE:To eliminate an impeller driving device, reduce a cumulative error, and facilitate assembling, by providing a joint on which a projecting part for driving an impeller is provided in an integrated form, and adjusting the end play for an armature on the both ends of a bearing. CONSTITUTION:Two to three washers 14 are assembled on the pump chamber side end face of the bearing of a housing 4, and a joint 11 is fitted over an armature shaft 9 from its end and is press fitted and positioned by means of a knurling part 10 provided on the shaft 9 so that an end play G becomes 0.1-0.3mm. Plural projecting parts 12 are provided in an integrated form with the joint 11 on the pump chamber side of the joint 11, while grooves 13 while are fitted to the projecting parts 12, are provided on an impeller 3, enabling the impeller 3 to synchronously rotate with the armature shaft 9 and the joint 11 which is press fitted to the shaft 9. Thereby, the end play G can be easily adjusted at the press fitting position of the joint 11, reducing a cumulative error, improving assembling accuracy, and eliminating an impeller driving device.

9. 发明专利

JPS61190191A MOTOR-DRIVEN FUEL PUMP FOR CAR 失效
公开(公告)号：JPS61190191A
公开(公告)日：1986-08-23
申请号：JP3045385
申请日：1985-02-20
申请人： AUTOMOBILE ANTIPOLLUTION
发明人： HIRATSUKA KO
IPC分类号： F04D5/00
摘要： PURPOSE:To improve the efficiency of pump by making the dimension of diameter of the pitch circle of a high-pressure pump chamber having a labyrinth seal construction smaller than the dimension of diameter of the pitch circle of a low-pressure chamber, and reducing the axial load applied to an impeller in said pump chamber. CONSTITUTION:During the operation of a pump, each pressure on both the low-pressure side and high-pressure side works as a surface pressure load, applying forces which press each other in the axial direction, to the both surfaces of an impeller 5. In order to balance these forces, a pitch circle diameter 18 based on the center of the shaft 9 of a vane part 12 on the high-pressure side is made smaller than a pitch circle diameter 19 based on the center of the shaft 9 of a vane part 11 in a low-pressure chamber. Thus, by reducing a pressure receiving area on the high-pressure side, the forces applied to the impeller 5 on both low-pressure side and the high-pressure side are equalized, reducing axial load applied to the impeller 5 in the pump chamber to improve the efficiency of pump. Furthermore, a labyrinth seal 13 provided on the high-pressure side prevents fuel from leaking from the high-pressure side to the low-pressure side, preventing the lowering of efficiency of pump.

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