CN201636022U

CN201636022U - Electronic pump

Info

Publication number: CN201636022U
Application number: CN2009203124104U
Authority: CN
Inventors: 司洪伟; 李余芝; 周峰杰
Original assignee: Guangzhou Southeast Electric Appliance & Motor Co Ltd
Current assignee: Guangzhou Southeast Electric Appliance & Motor Co Ltd
Priority date: 2009-10-14
Filing date: 2009-10-14
Publication date: 2010-11-17
Anticipated expiration: 2019-10-14

Abstract

The utility model discloses an electronic pump which comprises a rear cover, a stator assembly, a motor shell, a rotor, a motor shaft, a pump shell and an impeller; the motor shell comprises a motor shell body and a dividing wall; the dividing wall is fixedly connected with the inside wall of the motor shell body; a stator cavity and a rotor cavity are divided in the motor shell body; the stator assembly is arranged in the stator cavity; the dividing wall covers the surface of the stator assembly; the electronic pump also comprises a motor drive circuit board; the motor drive circuit board is arranged in the stator cavity and is in welding connection with the stator assembly; the stator assembly is fixedly connected with the motor drive circuit board; the stator assembly is fixed on the dividing wall; the rotor is in a clock shape, and the cylindrical outer wall of the rotor extends to an outer layer of the dividing wall; the impeller is positioned at the end part of the rotor, and the rotor and the impeller are integrated into a whole and are completely or partially made of permanent magnets; and a pin is fixed on the motor shell body. The utility model has simple structure, low cost, long service life and high working efficiency.

Description

A kind of electronic pump

Technical field

The utility model relates to a kind of pump, particularly a kind of for motor vehicle electronic pump.

Background technique

At present, what existing vehicle adopted with electronic pump is that the shaft extension end of motor directly connects blade or drives blade by magnetic shaft coupling, the former motive sealing of axle was easily lost efficacy, be difficult to accomplish effective sealing, the life-span of pump is shorter, though the latter has solved sealing problem by magnetic shaft coupling, because by the magnetic shaft coupling transmission, efficient will reduce, and coupling makes that production cost of products rises, the production assembling difficulty is big simultaneously.

The model utility content

The purpose of this utility model is in order to overcome the above-mentioned deficiency of existing electronic pump, and a kind of reasonable in design, sealing fully, electronic pump motor casing simple in structure are provided.

The technological scheme that realizes the utility model purpose is a kind of electronic pump, comprising: bonnet, stator module, motor casing, rotor, motor shaft, pump case and impeller; Described motor casing comprises motor casing body and partitioning wall, and partitioning wall is fixedlyed connected with the madial wall of motor casing body, isolates stator cavity and rotor chamber in the motor casing body; Described stator module is arranged in the described stator cavity; Described partitioning wall cover is overlying on described stator module surface; Described electronic pump also comprises the motor-drive circuit plate, is arranged in the described stator cavity, is weldingly connected with described stator module; Described stator module is fixedlyed connected with described motor-drive circuit plate; Described stator module is fixed on the described partitioning wall; Described rotor is bell, and its cylindrical outer wall extends into described partitioning wall skin; Described motor shaft is fixed on the above impeller of described partitioning wall and is positioned at rotor tip, and rotor and described impeller are as a whole, and it is all or part of to be permanent magnet; Fixing plug pin on the described motor casing body.

Described contact pin is as a whole as piece moulding inlaying and the injection moulding of described motor casing body.

Described pump case and described motor casing are sealed by seal ring, are connected by fastening screw trip bolt between the motor casing body of pump case and motor casing.

Described motor shaft is as a whole as piece moulding inlaying and described partitioning wall injection moulding.

Described rotor has rotor is carried out the bearing that radial location uses and rotor is carried out the back-up ring that axially locating is used, and described bearing fixing is set on the described motor shaft on described rotor; Described back-up ring encapsulation is in the termination of described motor shaft.

Described bearing is as a whole as piece moulding inlaying and rotor injection moulding.

Stator module of the present utility model and rotor are placed in the motor casing, are kept apart fully by partitioning wall, and motor shaft and partitioning wall are injected into one, and stator module produces magnetic field, and rotor is sensed the magnetic field back wall and rotated around motor shaft, the electronic pump normal operation; Good sealing effect, and simple in structure, and cost is low, has prolonged the working life of electric-motor pump, has improved the working efficiency of electronic pump.

Description of drawings

Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below

Fig. 1 is the outline drawing of the utility model electronic pump.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is the structural representation of motor casing, motor shaft, contact pin among Fig. 2.

Fig. 4 is the A-A cutaway view Amplified image of Fig. 3.

Fig. 5 is the p-m rotor among Fig. 2 and the structural representation of bearing.

Fig. 6 is the right elevation of Fig. 5.

Label is in the accompanying drawing:

Bonnet 1, set screw 2, motor-drive circuit plate 3, contact pin 4, stator module 5, motor casing 6, motor casing body 6-1, partitioning wall 6-2, stator cavity 6-3, rotor chamber 6-4, rotor 7, motor shaft 8, back-up ring 9, pump case 10, impeller 11, bearing 12, seal ring 13, fastening screw trip bolt 14.

Embodiment

(embodiment 1)

See Fig. 1 to Fig. 6, the electronic pump of present embodiment, comprise bonnet 1, set screw 2, motor-drive circuit plate 3, contact pin 4, stator module 5, motor casing 6, rotor 7, motor shaft 8, back-up ring 9, pump case 10, impeller 11, bearing 12, seal ring 13 and fastening screw trip bolt 14.

Motor casing 6 comprises motor casing body 6-1 and partitioning wall 6-2, and partitioning wall 6-2 is fixedlyed connected with the madial wall of motor casing body 6-1, isolates stator cavity 6-3 and rotor chamber 6-4 in motor casing body 6-1.

Stator module 5 and motor-drive circuit plate 3 are arranged in the stator cavity 6-3; Partitioning wall 6-2 cover is overlying on stator module 5 surfaces, and the mode that adopts soldering is connected motor-drive circuit plate 3 with leg on the stator module 5.Stator module 5 is fixed on the partitioning wall 6-2 by set screw 2.Rotor 7 is bell, and its cylindrical outer wall extends into partitioning wall 6-2 skin.Impeller 11 is positioned at rotor 7 ends, and rotor 7 is as a whole with impeller 11, and it is all or part of to be permanent magnet.Motor casing body 6-1 goes up fixing plug pin 4, and contact pin 4 is used for motor-drive circuit plate 3 and is connected with the electric wiring of electronic pump outside, and contact pin 4 is as a whole as piece moulding inlaying and motor casing body 6-1 injection moulding.Pump case 10 and motor casing 6 be by seal ring 13 sealings, is connected by fastening screw trip bolt 12 between the motor casing body 6-1 of pump case 10 and motor casing 6.Motor shaft 8 is as a whole as piece moulding inlaying and partitioning wall 6-2 injection moulding, motor shaft 8 and stator module 5 concentrics.Rotor 7 has rotor 7 is carried out the bearing 12 that radial location uses and rotor 7 is carried out the back-up ring 9 that axially locating is used, and bearing 12 is fixed on the rotor 7, is set on the motor shaft 8; Back-up ring 9 encapsulations are in the termination of motor shaft 8.Bearing 12 is as a whole as piece moulding inlaying and rotor 7 injection mouldings.

Behind the logical direct current of electronic pump, with stator module 5 energisings, stator module 5 produces rotating magnetic field through 3 modulation of motor-drive circuit plate, rotor 6 induction fields, and, drive impeller 13 rotations of rotor 6 ends around motor shaft 7 rotations, water is discharged.

Should be appreciated that specific embodiment described above only is used to explain the utility model, and be not used in qualification the utility model.Conspicuous variation of being extended out by spirit of the present utility model or change still are among the protection domain of the present utility model.

Claims

1. an electronic pump comprises: bonnet (1), stator module (5), motor casing (6), rotor (7), motor shaft (8), pump case (10) and impeller (11); It is characterized in that: described motor casing (6) comprises motor casing body (6-1) and partitioning wall (6-2), partitioning wall (6-2) is fixedlyed connected with the madial wall of motor casing body (6-1), isolates stator cavity (6-3) and rotor chamber (6-4) in motor casing body (6-1); Described stator module (5) is arranged in the described stator cavity (6-3); Described partitioning wall (6-2) cover is overlying on described stator module (5) surface; Described electronic pump also comprises motor-drive circuit plate (3), is arranged in the described stator cavity (6-3), is weldingly connected with described stator module (5); Described stator module (5) is fixedlyed connected with described motor-drive circuit plate (3); Described stator module (5) is fixed on the described partitioning wall (6-2); Described rotor (7) is bell, and its cylindrical outer wall extends into described partitioning wall (6-2) skin; Described motor shaft (8) is fixed on the described partitioning wall (6-2); Described impeller (11) is positioned at rotor (7) end, and rotor (7) is as a whole with described impeller (11), and it is all or part of to be permanent magnet; Described motor casing body (6-1) is gone up fixing plug pin (4).

2. electronic pump according to claim 1 is characterized in that: described contact pin (4) is as a whole as piece moulding inlaying and described motor casing body (6-1) injection moulding.

3. electronic pump according to claim 2 is characterized in that: described pump case (10) and described motor casing (6) be by seal ring (13) sealing, is connected by fastening screw trip bolt (12) between the motor casing body (6-1) of pump case (10) and motor casing (6).

4. electronic pump according to claim 2 is characterized in that: described motor shaft (8) is as a whole as piece moulding inlaying and described partitioning wall (6-2) injection moulding.

5. electronic pump according to claim 2, it is characterized in that: described rotor (7) has rotor (7) is carried out the bearing (12) that radial location uses and rotor is carried out the back-up ring (9) that axially locating is used, described bearing (12) is fixed on the described rotor (7), is set on the described motor shaft (8); Described back-up ring (9) encapsulation is in the termination of described motor shaft (8).

6. electronic pump according to claim 5 is characterized in that: described bearing (12) is as a whole as piece moulding inlaying and rotor (7) injection moulding.