CN211950892U

CN211950892U - Electronic water pump and vehicle

Info

Publication number: CN211950892U
Application number: CN202020336703.2U
Authority: CN
Inventors: 胡文生; 徐文清; 董友军; 段立国; 蔡静
Original assignee: Mind Electronics Appliance Co Ltd
Current assignee: Mind Electronics Appliance Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-11-17
Anticipated expiration: 2030-03-17

Abstract

The utility model provides an electronic water pump and a vehicle, wherein the electronic water pump comprises an impeller assembly and an electric drive part; the electric drive part comprises a stator and a shell, a winding is arranged on the stator, the shell is arranged by coating the stator in an injection molding manner, a first cavity capable of bearing the electric drive part is constructed on the shell, and a rotating shaft is fixedly arranged in the first cavity; the impeller assembly comprises a rotor and an impeller, wherein the rotor comprises a connecting piece which is rotatably sleeved on the rotating shaft and a magnetic ring which is fixedly sleeved on the connecting piece; the magnetic ring is formed by injection molding of a magnetic material and can bear the driving of the stator to rotate; the impeller is fixedly sleeved on the connecting piece, can be driven by the rotor to rotate, and can pump liquid due to rotation. The utility model discloses an electronic pump cost is lower, and the assembly shaping of being convenient for.

Description

Electronic water pump and vehicle

Technical Field

The utility model relates to a vehicle parts technical field, in particular to electronic water pump, the utility model discloses still relate to an use vehicle that has this electronic water pump.

Background

The automobile heat management system is an important component of the automobile, and the electronic water pump is an important component of the automobile heat management system, and is required to be used in component systems such as an air conditioning and heating system and a water cooling and air cooling system of the automobile. The stator is usually installed in the casing to current electronic water pump to constitute the sealed to the stator through apron and casing lock, in order to have better sealed effect, the sealing washer generally need be used between apron and casing, the material cost of sealing washer has not only been increased, and the assembly between apron and casing is also comparatively troublesome moreover, and simultaneously, more magnetic material need be used to current electronic water pump's rotor, has increased electronic water pump's material cost.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to an electronic water pump to simplify the assembling process of the electronic water pump and reduce the cost of the electronic water pump.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an electronic water pump comprising an impeller assembly and an electric drive, wherein:

the electric drive section includes:

the stator is provided with a winding;

the shell is arranged by injection molding and coating the stator, a first cavity capable of bearing the electric driving part is formed in the shell, and a rotating shaft is fixedly arranged in the first cavity;

the impeller assembly includes:

the rotor comprises a connecting piece which is rotatably sleeved on the rotating shaft and a magnetic ring which is fixedly sleeved on the connecting piece; the magnetic ring is formed by injection molding of a magnetic material and can rotate by being driven by the stator;

the impeller is fixedly sleeved on the connecting piece; the impeller can be driven by the rotor to rotate, and can pump liquid due to rotation.

Further, the stator includes stator core to and injection moulding in stator skeleton on the stator core, the winding is located on the stator skeleton.

Furthermore, leading-out pieces are respectively connected with the winding and the stator core and extend out of the shell, so that the winding, the stator core and an external power supply can be electrically connected.

Furthermore, the shell is cylindrical, the first cavity is located at one end of the shell, a second cavity is formed at the other end of the shell, and the second cavity can be used for bearing electric elements of the electronic water pump.

Furthermore, the electronic water pump further comprises a cover plate which can be buckled with the shell to seal the second cavity, and the cover plate is connected with the shell through ultrasonic welding.

Furthermore, the magnet ring is formed by injection molding of neodymium iron boron materials.

Furthermore, the connecting piece adopts graphite material.

Further, the impeller is including fixed cover locate lower blade on the connecting piece, and with the last blade that lower blade linked firmly, just go up the blade with adopt ultrasonic welding to connect between the lower blade.

Furthermore, a rubber support is sleeved on the shell and can form the fixed connection between the electronic water pump and an external part.

Compared with the prior art, the utility model discloses following advantage has:

the electronic water pump of the utility model has the advantages that the casing is coated on the stator by injection molding, the stator can be sealed without installing a sealing ring while the stator has better sealing performance, so that the part cost of the sealing ring can be reduced, and the installation steps are simplified because the sealing ring is not needed to be installed; furthermore, the utility model discloses a rotor adopts injection moulding's magnetic ring, can save magnetic material's use amount, reduces magnetic material's material cost.

Another object of the present invention is to provide a vehicle, wherein the electronic water pump is applied to the vehicle.

The utility model discloses a vehicle has the same beneficial effect with foretell electronic pump, no longer gives unnecessary details here.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a stator according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a stator core according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a housing according to a first embodiment of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 from another angle;

fig. 5 is a schematic view illustrating the cooperation between the housing and the cover plate according to the first embodiment of the present invention;

fig. 6 is an exploded view of an impeller assembly according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of an electronic water pump according to a first embodiment of the present invention;

fig. 8 is an exploded view of the impeller assembly and the scroll according to the first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a rubber support according to a first embodiment of the present invention.

Description of reference numerals:

1-stator, 11-stator core, 111-core body, 112-winding fixing part, 12-stator skeleton layer, 13-winding, 14-leading-out part, 2-shell, 201-first cavity, 202-second cavity, 3-cover plate, 4-rotating shaft, 5-impeller assembly, 51-connecting part, 5101-central hole, 52-magnetic ring, 53-lower blade, 54-upper blade, 6-volute, 61-limiting cap, 7-limiting part, 71-latch, 8-rubber support, 81-groove and 801-mounting hole.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The present embodiment relates to an electronic water pump including an impeller assembly 5 and an electric drive portion; wherein, the electric drive part comprises a stator 1 and a shell 2; the stator 1 is provided with a winding 13, the shell 2 is arranged by injection molding and coating the stator 1, a first cavity 201 capable of bearing an electric driving part is constructed in the shell 2, and a rotating shaft 4 is fixedly arranged in the first cavity 201; the impeller assembly 5 comprises a rotor and an impeller, wherein the rotor comprises a connecting piece 51 which is rotatably sleeved on the rotating shaft 4 and a magnetic ring 52 which is fixedly sleeved on the connecting piece 51, and the magnetic ring 52 is formed by injection molding of a magnetic material and can bear the drive of the stator 1 to rotate; the impeller is fixedly sleeved on the connecting piece 51, can be driven by the rotor to rotate, and can pump liquid due to rotation.

In a specific structure, as shown in fig. 1 and 2, the stator 1 includes a stator core 11 and a stator frame 12 injection-molded on the stator core 11; the stator core 11 is formed by stacking silicon steel sheets, and as shown in fig. 2, the stator core 11 includes an annular core body 111 and a plurality of winding fixing portions 112 connected to an inner side surface of the core body 111 and arranged at annular intervals.

Referring to fig. 1, the stator frame 12 is specifically injection-molded on each winding fixing portion 112, and the stator frame 12 may form a coating on each surface of each winding fixing portion 112 except for the inner side surface; preferably, the length of the stator frame 12 is greater than the length of the core body 111 in the axial direction of the electronic water pump, so that the stator frame can be fitted to the housing 2 described below to provide a good sealing effect with respect to the core body 111.

Still referring to fig. 1, each winding 13 is provided on the winding fixing portion 112, forming a three-phase winding 13; referring to fig. 3, in the present embodiment, a plurality of lead-out pieces 14 are fixedly disposed on the stator 1, the lead-out pieces 14 are respectively connected to the phase windings 13 and the core body 111, and each lead-out piece 14 extends out of the below-described housing 2, so as to form an electrical connection between each phase winding 13 and the core body 111 and an external power source.

Fig. 3 to 5 show a schematic structural diagram of the housing 2, specifically, the housing 2 is injection-molded on the stator 1, that is, the housing 2 is injection-molded on the stator 1, and the housing 2 is simultaneously injection-molded on each of the lead-out members 14. Through with casing 2 injection moulding on stator 1, can be sealed stator 1 and winding 13 on it by casing 2 complete cladding stator 1, compare in adopting the mode of apron 3 and sealing washer in the technique to stator 1, firstly, the structure of this embodiment has better sealing performance, and secondly, the part cost of sealing washer can be saved to the electronic water pump of this embodiment, and again, the assembly process of this electronic water pump still can be simplified.

Still referring to fig. 3 to 5, the housing 2 is cylindrical, the first cavity 201 is located at one end of the housing 2, the shaft 4 is fixed on the bottom surface of the first cavity 201, and the shaft 4 is, for example, integrally injection-molded with the housing 2 or fixed on the bottom surface of the first cavity 201 by other methods such as insert molding. A second cavity 202 is formed at the other end of the housing 2, and the second cavity 202 can hold an electrical component, such as a PCB board, it should be noted that the electrical structure of the electronic water pump can refer to the prior art and will not be described in detail herein.

In this embodiment, referring to fig. 5, the electronic water pump further includes a cover plate 3 that can be fastened to the housing 2 to seal the second cavity 202, and preferably, the cover plate 3 and the housing 2 are connected by ultrasonic welding, so that the second cavity 202 has a better sealing effect.

The connecting member 51 has a cylindrical structure as shown in fig. 6, and a central hole 5101 is disposed through the connecting member 51 along the axial direction of the connecting member 51, the central hole 5101 is loosely sleeved on the rotating shaft 4, so that the connecting member 51 can rotate around the rotating shaft 4, and in order to make the connecting member 51 have a good use effect, the connecting member 51 is preferably made of graphite.

The structure of the impeller is shown in fig. 6, and the impeller includes a lower blade 53 fixedly sleeved on the connecting piece 51, and an upper blade 54 fixedly connected with the lower blade 53, and preferably, the upper blade 54 and the lower blade 53 are connected by ultrasonic welding, the magnetic ring 52 is concentrically sleeved on the connecting piece 51, preferably, the lower blade 53 is fixed on the connecting piece 51 by injection molding, and the magnetic ring 52 is fixed on the lower blade 53 by injection molding, wherein the magnetic ring 52 is preferably injection molded by neodymium iron boron material. It should be noted that, the driving between the stator and the rotor, i.e. between the stator and the magnetic ring, can refer to the existing motor technology, and is not described in detail herein.

In this embodiment, referring to fig. 7, the electronic water pump further includes a volute 6 having an inlet and an outlet, the volute 6 can be buckled with the housing 2 to form a seal of the first cavity 201; in order to ensure the sealing effect of the first cavity 201, in the present embodiment, a sealing ring is sandwiched between the scroll 6 and the housing 2.

In this embodiment, referring to fig. 7, a limiting member 7 is fixedly disposed on the connecting member 51 to prevent the impeller assembly 5 from moving on the connecting member 51 along the axial direction of the connecting member 51. In a specific structure, referring to fig. 7, a limiting cap 61 is disposed on the volute 6 and can be sleeved on the end of the rotating shaft 4. The limiting member 7 includes an annular base body sleeved on the connecting member 51 and clamped between the impeller assembly 5 and the lower end surface of the limiting cap 61, and a plurality of claws 71 fixedly connected with the annular base body and extending upward and capable of being tightly held on the periphery of the limiting cap 61.

In order to facilitate the connection between the electronic water pump and external parts, for example, the electronic water pump is fixedly mounted on a vehicle, this embodiment also provides a preferable mounting manner, and referring to fig. 8 and 9, a rubber bracket 8 is fixedly sleeved on the housing 2, and the rubber bracket 8 can be connected with external parts, thereby forming the connection between the electronic water pump and external parts. In a specific structure, the rubber support 8 is triangular, the mounting hole 801 penetrates through the rubber support 8 along the thickness direction of the rubber support 8, and the diameter of the mounting hole 801 can be increased by elastic deformation of the rubber support 8, so that the mounting hole 801 is sleeved on the shell 2 and can be tightened on the shell 2 due to elastic recovery of the rubber support 8. And in order to improve the clamping effect of the rubber support 8 on the housing 2, referring to fig. 9, a plurality of grooves 81 are arranged at intervals on the side wall of the mounting hole 801. Through adopting rubber support 8 to carry out electronic pump's installation, can avoid electronic pump vibration to produce abnormal sound, also have better guard action to electronic pump.

In summary, the electronic water pump of the embodiment has the advantages that the casing 2 is coated on the stator 1 in an injection molding manner, so that the stator 1 can be sealed without installing a sealing ring while the stator 1 has better sealing performance, the part cost of the sealing ring can be reduced, and the assembling steps of the electronic water pump are simplified because the sealing ring is not needed to be installed; furthermore, the utility model discloses a rotor adopts magnetic material injection moulding, still can save magnetic material's use amount, reduces magnetic material's material cost.

Example two

The present embodiment relates to a vehicle, and the electronic water pump as described in the first embodiment is applied to the vehicle.

The utility model discloses a vehicle, through adopting as embodiment one the electronic water pump, can reduce vehicle cost.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic water pump, including impeller assembly (5) and electric drive portion, its characterized in that:

the electric drive section includes:

the stator (1), there are windings (13) on the said stator (1);

the stator comprises a shell (2), the stator (1) is coated by injection molding, a first cavity (201) capable of bearing the electric driving part is formed in the shell (2), and a rotating shaft (4) is fixedly arranged in the first cavity (201);

the impeller assembly (5) comprises:

the rotor comprises a connecting piece (51) which is rotatably sleeved on the rotating shaft (4) and a magnetic ring (52) which is fixedly sleeved on the connecting piece (51), and the magnetic ring (52) is molded by adopting a magnetic material and can bear the drive of the stator (1) to rotate;

the impeller is fixedly sleeved on the connecting piece (51), can be driven by the rotor to rotate and can pump liquid due to rotation.

2. The electronic water pump of claim 1, wherein: stator (1) includes stator core (11) to and injection moulding in stator skeleton (12) on stator core (11), winding (13) are located on stator skeleton (12).

3. The electronic water pump of claim 2, wherein: and leading-out pieces (14) are respectively connected with the winding (13) and the stator core (11), and each leading-out piece (14) extends out of the shell (2) so as to form the electric connection between the winding (13) and the stator core (11) and an external power supply.

4. The electronic water pump of claim 1, wherein: the shell (2) is cylindrical, the first cavity (201) is located at one end of the shell (2), the second cavity (202) is formed at the other end of the shell (2), and the second cavity (202) can be used for bearing electric elements of the electronic water pump.

5. The electronic water pump of claim 4, wherein: the electronic water pump further comprises a cover plate (3) which can be buckled with the shell (2) so as to seal the second cavity (202), and the cover plate (3) is connected with the shell (2) through ultrasonic welding.

6. The electronic water pump of claim 1, wherein: the magnetic ring (52) is formed by injection molding of a neodymium iron boron material.

7. The electronic water pump of claim 1, wherein: the connecting piece (51) is made of graphite.

8. The electronic water pump of claim 7, wherein: the impeller comprises a lower blade (53) fixedly sleeved on the connecting piece (51) and an upper blade (54) fixedly connected with the lower blade (53), and the upper blade (54) is connected with the lower blade (53) through ultrasonic welding.

9. The electronic water pump of claim 1, wherein: the shell (2) is sleeved with a rubber support (8), and the rubber support (8) can form the fixed connection between the electronic water pump and external parts.

10. A vehicle, characterized in that: the electronic water pump according to any one of claims 1 to 9 is applied to the vehicle.