CN209134166U - Rotor assembly and electronic water pump - Google Patents

Abstract

The utility model provides a kind of rotor assembly and electronic water pump, wherein rotor assembly includes: shaft；Rotor core, rotor core are set in shaft；Permanent magnet, permanent magnet are arranged on the outer peripheral surface of rotor core；Shroud sleeve, shroud sleeve include integrally formed end plate and coaming plate, and end plate has the first mounting hole compatible with shaft, and shroud sleeve is set in shaft by the first mounting hole；Shielding cover board, shielding cover board have the second mounting hole compatible with shaft, and shielding cover board is set in shaft by the second mounting hole and is connect with coaming plate, and shroud sleeve, shielding cover board and shaft surround the confined space for accommodating rotor core and permanent magnet.The utility model solves the problem of carrying out antirust treatment to permanent magnet using Shooting Technique in the prior art, so as to cause production technology complexity and influencing rotor assembly performance.

Description

Rotor assembly and electronic water pump

Technical field

The utility model relates to water pump technologies, in particular to a kind of rotor assembly and electronic water pump.

Background technique

Electronic water pump includes the stator and rotor assembly being used cooperatively, wherein the permanent magnet of rotor assembly is usually by being sintered Rubidium iron boron or injection molding rubidium iron boron are made, and permanent magnet contacts with anti-icing fluid for a long time and will lead to permanent magnet and get rusty, and results even in forever The magnetic function of magnet weakens, to influence the overall performance of electronic water pump.

In the prior art to solve the problems, such as that permanent magnet gets rusty, rotor core and permanent magnet are wrapped up using the method for injection molding In plastic bag covering layer, but Shooting Technique is complicated, and the thickness for being molded wrapping layer is larger, will cause between permanent magnet and stator Gap it is excessive, influence the performance of rotor assembly.

Utility model content

The main purpose of the utility model is to provide a kind of rotor assembly and electronic water pumps, to solve to adopt in the prior art The problem of antirust treatment is carried out to permanent magnet with Shooting Technique, so as to cause production technology complexity and influences rotor assembly performance.

To achieve the goals above, one aspect according to the present utility model provides a kind of rotor assembly, comprising: turns Axis；Rotor core, rotor core are set in shaft；Permanent magnet, permanent magnet are arranged on the outer peripheral surface of rotor core；Housing Cylinder, shroud sleeve include integrally formed end plate and coaming plate, and end plate has the first mounting hole compatible with shaft, shroud sleeve It is set in shaft by the first mounting hole；Shielding cover board, shielding cover board have the second mounting hole compatible with shaft, shielding Cover board is set in shaft by the second mounting hole and is connect with coaming plate, and shroud sleeve, shielding cover board and shaft are surrounded for holding Receive the confined space of rotor core and permanent magnet.

Further, shielding cover board and shaft be by laser or ultrasonic bonding, shielding cover board and coaming plate by laser or Ultrasonic bonding, end plate and shaft pass through laser or ultrasonic bonding.

Further, the axially extending mounting groove along rotor core, at least portion are offered on the outer peripheral surface of rotor core Permanent magnet is divided to be mounted in mounting groove.

Further, end plate has the escape groove being connected with confined space, and escape groove is oppositely arranged with permanent magnet；With/ Or shielding cover board has the escape groove being connected with confined space, escape groove is oppositely arranged with permanent magnet.

Further, the inner edge of end plate is bent to form the first turnup structure with shaft cooperation；The inner circumferential of shielding cover board Along the second turnup structure being bent to form with shaft cooperation, the third that the outer periphery bending formation of shielding cover board cooperates with coaming plate is turned over Side structure.

Another aspect according to the present utility model provides a kind of electronic water pump, comprising: sequentially connected pump head, pump case And pump cover, pump head, pump case and pump cover surround accommodating chamber；The axial ends of separation sleeve, separation sleeve is connect with pump case and pump cover respectively, Accommodating chamber is divided into wet chamber and dry chamber；Rotor assembly, wet intracavitary, rotor assembly is above-mentioned rotor set for rotor assembly setting Part.

Further, electronic water pump further includes the impeller being arranged in the shaft of rotor assembly, and impeller includes: under impeller Lid, impeller lower cover include lower cover ontology and the blade that is arranged on lower cover ontology, and the end face of separate the lower cover ontology of blade is arranged There is welding bar；Impeller upper cover offers welding groove compatible with welding bar on lid on impeller, after welding bar protrudes into welding groove, Impeller upper cover and impeller lower cover pass through ultrasonic bonding.

Further, it is additionally provided with positioning column on the end face of the separate lower cover ontology of blade, is also provided on lid on impeller Location hole compatible with positioning column.

Further, electronic water pump further includes socket, contact pin and control panel, and socket is fixedly connected with pump case, contact pin setting In socket, pin holes are offered on control panel, part contact pin in socket by stretching out and being inserted into pin holes.

Further, contact pin is Z-shaped.

Using the technical solution of the utility model, it is provided with shroud sleeve and shielding cover board, shroud sleeve and shielding cover board It is set in shaft from the axial ends of shaft respectively, and rotor core and permanent magnet is located at shroud sleeve, shielding cover board It surrounds in confined space with shaft, is contacted to be effectively prevented liquid with permanent magnet, guarantee the service performance of permanent magnet.With note Modeling technique forms plastic bag covering layer and compares, the simple production process of shroud sleeve and shielding cover board, and shroud sleeve and screening cover The thickness of plate can significantly reduce, to reduce the gap between permanent magnet and stator, rotor assembly is effectively promoted Service performance.

In addition, shroud sleeve provided by the present application, end plate and coaming plate are integrally formed, in such manner, it is possible to promote rotor assembly Assembly efficiency, additionally it is possible to when end plate and coaming plate being avoided to be attached by forms such as welding, sealing performance between the two is reduced, To while guaranteeing the service performance of rotor assembly, further improve the effect of the protection to rotor core and permanent magnet Fruit.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows a kind of structural schematic diagram of the rotor assembly of alternative embodiment according to the present utility model；

Fig. 2 shows the signals of the assembly relation of the shaft of the rotor assembly of Fig. 1, rotor core, permanent magnet and shroud sleeve Figure；

Fig. 3 shows the structural schematic diagram of the rotor core of Fig. 2；

Fig. 4 shows a kind of structural schematic diagram of the electronic water pump of alternative embodiment according to the present utility model；

Fig. 5 shows the rotor assembly of the electronic water pump of Fig. 4 and the decomposition texture schematic diagram of impeller；

Fig. 6 shows the structural schematic diagram of the impeller lower cover of the impeller of Fig. 5；

Fig. 7 shows the structural schematic diagram of the impeller upper cover of the impeller of Fig. 5；

Fig. 8 shows the socket of the electronic water pump of Fig. 4 and the assembly relation schematic diagram of contact pin；

Fig. 9 shows the structural schematic diagram of the contact pin of Fig. 8.

Wherein, the above drawings include the following reference numerals:

10, shaft；20, rotor core；21, mounting groove；22, pilot hole；30, permanent magnet；40, shroud sleeve；41, it holds Plate；411, the first mounting hole；412, escape groove；413, the first turnup structure；42, coaming plate；50, shielding cover board；51, the second installation Hole；52, the second turnup structure；53, third turnup structure；60, impeller；61, impeller lower cover；611, lower cover ontology；612, blade； 613, welding bar；614, positioning column；62, impeller upper cover；621, welding groove；622, location hole；70, pump head；80, pump case；90, it pumps Lid；100, separation sleeve；101, wet chamber；102, dry chamber；110, socket；120, contact pin；130, control panel；131, pin holes；140, Bolt.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities Apply example.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as practical new to this Type and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

It is multiple so as to cause production technology in order to solve to carry out antirust treatment to permanent magnet using Shooting Technique in the prior art Miscellaneous and the problem of influence rotor assembly performance, the utility model provides a kind of rotor assembly and electronic water pump.

According to the one aspect of the application, as shown in Figure 1 to Figure 3, rotor assembly includes shaft 10, rotor core 20, forever Magnet 30, shroud sleeve 40 and shielding cover board 50, rotor core 20 are set in shaft 10, and permanent magnet 30 is arranged in rotor core On 20 outer peripheral surface, shroud sleeve 40 includes integrally formed end plate 41 and coaming plate 42, and end plate 41 has to be adapted with shaft 10 The first mounting hole 411, shroud sleeve 40 is set in shaft 10 by the first mounting hole 411, and shielding cover board 50 has and turns Compatible second mounting hole 51 of axis 10, shielding cover board 50 are set in shaft 10 by the second mounting hole 51 and are connected with coaming plate 42 It connects, shroud sleeve 40, shielding cover board 50 and shaft 10 surround the confined space for accommodating rotor core 20 and permanent magnet 30.

In this application, be provided with shroud sleeve 40 and shielding cover board 50, shroud sleeve 40 and shielding cover board 50 respectively from The axial ends of shaft 10 is set in shaft 10, and rotor core 20 and permanent magnet 30 are located at shroud sleeve 40, shielding Cover board 50 and shaft 10 surround in confined space, contact to be effectively prevented liquid with permanent magnet 30, guarantee permanent magnet 30 Service performance.Compared with Shooting Technique forms plastic bag covering layer, the simple production process of shroud sleeve and shielding cover board, and shield The thickness of sleeve 40 and shielding cover board 50 can significantly reduce, to reduce the gap between permanent magnet 30 and stator, effectively Ground improves the service performance of rotor assembly.

In addition, shroud sleeve 40 provided by the present application, end plate 41 and coaming plate 42 are integrally formed, in such manner, it is possible to promote rotor The assembly efficiency of component, additionally it is possible to which when end plate 41 and coaming plate 42 being avoided to be attached by forms such as welding, between the two is close Sealing property reduces, thus while guaranteeing the service performance of rotor assembly, further improves to rotor core 20 and forever The protecting effect of magnet 30.

Optionally, shroud sleeve 40 and shielding cover board 50 select thickness to be more than or equal to 0.2mm and are less than or equal to the material of 0.5mm Material is made.

Optionally, shroud sleeve 40 and shielding cover board 50 select non-magnetic metal material to be made.

Optionally, shroud sleeve 40 and shielding cover board 50 by stainless steel or copper at.

Optionally, by laser or ultrasonic bonding, shielding cover board 50 and coaming plate 42 pass through for shielding cover board 50 and shaft 10 Laser or ultrasonic bonding, end plate 41 and shaft 10 pass through laser or ultrasonic bonding.In this way, shroud sleeve 40, shielding cover board Welded together by way of laser or ultrasonic bonding between 50 and shaft 10, to form confined space.

Optionally, rotor core 20 has pilot hole 22, and rotor core 20 is interference fitted by pilot hole 22 and shaft 10. The rotation of shaft 10 can drive rotor core 20, permanent magnet 30, shroud sleeve 40 and shielding cover board 50 to rotate synchronously.

As shown in Figures 2 and 3, the axially extending installation along rotor core 20 is offered on the outer peripheral surface of rotor core 20 Slot 21, at least partly permanent magnet 30 are mounted in mounting groove 21.

As shown in Figures 2 and 3, mounting groove 21 is multiple, multiple being provided at circumferentially spaced around rotor core 20 of mounting groove 21, Permanent magnet 30 be it is multiple, multiple permanent magnets 30 are mounted on correspondingly in multiple mounting grooves 21.

Optionally, end plate 41 has the escape groove 412 being connected with confined space, and escape groove 412 and permanent magnet 30 are opposite Setting；And/or shielding cover board 50 has the escape groove 412 being connected with confined space, escape groove 412 is opposite with permanent magnet 30 to be set It sets.Prevent permanent magnet 30 because mismachining tolerance or installation it is not in place due to protrude from the axial end face of rotor core 20 when, escape groove 412 Permanent magnet 30 can be avoided, avoid permanent magnet 30 from pushing shroud sleeve 40 and/or shielding cover board 50, cause shroud sleeve 40 and/or shielding cover board 50 deformation occurs and causes not prison welding, cause to leak.

Optionally, escape groove 412 is arranged in a ring.

Optionally, shroud sleeve 40 can be bent to form by thin-wall pipe, and escape groove 412 is bent to form by end plate 41.

Optionally, shielding cover board 50 is by for slab construction.

In alternative embodiment shown in fig. 1, only end plate 41 has the escape groove 412 being connected with confined space, evacuation Slot 412 is oppositely arranged with permanent magnet 30.In this way, operator makes permanent magnetism when permanent magnet 30 to be assembled on rotor core 20 Axial one end flush of the end face of 30 one end of body and rotor core 20, when due to mismachining tolerance or installation is not in place leads to permanent magnetism When the other end of body 30 protrudes from the end face of the axial other end of rotor core 20, permanent magnet 30 can protrude into escape groove 412, from And avoid shroud sleeve 40 deformation occurs, influence the connective stability between shroud sleeve 40, shielding cover board 50 and shaft 10.Only End plate 41 has the escape groove 412 being connected with confined space, can reduce the difficulty of processing of rotor assembly, promotes rotor assembly Production efficiency.

As shown in Figure 1, the inner edge of end plate 41 is bent to form the first turnup structure 413 cooperated with shaft 10, to increase The contact area of big end plate 41 and shaft 10, promotes the connective stability of end plate 41 and shaft 10；The inner edge of shielding cover board 50 The second turnup structure 52 cooperated with shaft 10 is bent to form to mention to increase the contact area of shielding cover board 50 and shaft 10 Rise the connective stability of shielding cover board 50 and shaft 10；The third that the outer periphery bending formation of shielding cover board 50 and coaming plate 42 cooperate Turnup structure 53 promotes the connection of shielding cover board 50 and coaming plate 42 to increase the contact area of shielding cover board 50 and coaming plate 42 Stability.

According to the another aspect of the application, as shown in figure 4, electronic water pump includes sequentially connected pump head 70,80 and of pump case Pump cover 90, pump head 70, pump case 80 and pump cover 90 surround accommodating chamber, and electronic water pump further includes separation sleeve 100 and rotor assembly, isolation The axial ends of set 100 is connect with pump case 80 and pump cover 90 respectively, and accommodating chamber is divided into wet chamber 101 and dry chamber 102, rotor set Part is arranged in wet chamber 101, wherein rotor assembly is above-mentioned rotor assembly.In this way, rotor assembly is arranged in wet chamber 101, Wet intracavitary liquid is prevented wet intracavitary liquid from contacting with permanent magnet 30, is avoided by 50 backstop of shroud sleeve 40 and shielding cover board Permanent magnet 30 gets rusty, and electronic water pump provided by the present application includes rotor assembly provided by the present application, due to provided by the present application turn There is sub-component good service performance to be correspondingly able to ascend the overall performance of electronic water pump.

As shown in Figure 4 and Figure 5, electronic water pump further includes the impeller 60 being arranged in the shaft 10 of rotor assembly, impeller 60 Including impeller lower cover 61 and impeller upper cover 62, impeller lower cover 61 includes lower cover ontology 611 and the leaf being arranged on lower cover ontology 611 The end face of piece 612, the separate lower cover ontology 611 of blade 612 is provided with welding bar 613, offers and welds in impeller upper cover 62 The compatible welding groove 621 of muscle 613, after welding bar 613 protrudes into welding groove 621, impeller upper cover 62 and impeller lower cover 61 are by surpassing Sound wave welding.In this way, shaft 10 and impeller 60 use split-type design, impeller 60 passes through bolt 140 and axial the one of shaft 10 End is fastenedly connected, wherein blade 612 and lower cover ontology 611 are integrally formed, and facilitate the stripping operation of impeller lower cover 61.Utilize weldering It connects muscle 613 and welding groove 621 cooperates, Primary Location is carried out to impeller lower cover 61 and impeller upper cover 62, then pass through ultrasonic bonding Impeller lower cover 61 is fixedly connected with impeller upper cover 62.Shaft 10 rotates, and is able to drive the synchronous rotation of impeller 60.

Optionally, blade 612 is multiple, and multiple blades 612 are evenly arranged on lower cover ontology 611, correspondingly, welding bar 613, Positioning column 614, welding groove 621 and location hole 622 are multiple and are arranged correspondingly with multiple blades 612.

As shown in figure 4, impeller 60 and rotor assembly are respectively positioned in wet chamber 101.

As shown in Figure 6 and Figure 7, positioning column 614, impeller are additionally provided on the end face of the separate lower cover ontology 611 of blade 612 Location hole 622 compatible with positioning column 614 is also provided in upper cover 62.In this way, being matched using positioning column 614 and location hole 622 It closes, Primary Location is carried out to impeller lower cover 61 and impeller upper cover 62, the precision of Primary Location is promoted, avoids leaf in the welding process It takes turns and opposite play occurs between lower cover 61 and impeller upper cover 62.

As shown in Fig. 4, Fig. 8 and Fig. 9, electronic water pump further includes socket 110, contact pin 120 and control panel 130, socket 110 with Pump case 80 is fixedly connected, and contact pin 120 is arranged in socket 110, and pin holes 131, part contact pin 120 are offered on control panel 130 By being stretched out in socket 110 and being inserted into pin holes 131.

As shown in figure 9, contact pin 120 is Z-shaped, contact pin 120 is perpendicularly inserted after the pin holes 131 of slotting control panel 130 and control Making sheet 130 is fixedly connected by soldering, prevents electronic water pump in use, is loosened between contact pin 120 and control panel 130, Promote the connection reliability of contact pin 120 and control panel 130.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with In attached drawing afterwards do not need that it is further discussed.

In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself Wide is inside and outside.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this The limitation of utility model protection range.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, work, device, component and/or their combination.

It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein can be in addition to illustrating herein Or the sequence other than those of description is implemented.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of rotor assembly characterized by comprising

Shaft (10)；

Rotor core (20), the rotor core (20) are set on the shaft (10)；

Permanent magnet (30), the permanent magnet (30) are arranged on the outer peripheral surface of the rotor core (20)；

Shroud sleeve (40), the shroud sleeve (40) include integrally formed end plate (41) and coaming plate (42), the end plate (41) there is with the shaft (10) compatible first mounting hole (411), the shroud sleeve (40) is pacified by described first Dress hole (411) is set on the shaft (10)；

Shielding cover board (50), the shielding cover board (50) have with the shaft (10) compatible second mounting hole (51), institute Shielding cover board (50) is stated to be set on the shaft (10) by second mounting hole (51) and connect with the coaming plate (42), The shroud sleeve (40), the shielding cover board (50) and the shaft (10) surround for accommodate the rotor core (20) and The confined space of the permanent magnet (30).

2. rotor assembly according to claim 1, which is characterized in that the shielding cover board (50) and the shaft (10) are logical Laser or ultrasonic bonding are crossed, the shielding cover board (50) and the coaming plate (42) pass through laser or ultrasonic bonding, the end Plate (41) and the shaft (10) pass through laser or ultrasonic bonding.

3. rotor assembly according to claim 1, which is characterized in that offered on the outer peripheral surface of the rotor core (20) Along the axially extending mounting groove (21) of the rotor core (20), at least partly described permanent magnet (30) is mounted on the installation In slot (21).

4. rotor assembly according to any one of claim 1 to 3, which is characterized in that

The end plate (41) has the escape groove (412) that is connected with the confined space, the escape groove (412) and it is described forever Magnet (30) is oppositely arranged；And/or

The shielding cover board (50) has the escape groove (412) being connected with the confined space, the escape groove (412) and institute Permanent magnet (30) is stated to be oppositely arranged.

5. rotor assembly according to claim 1, which is characterized in that the inner edge of the end plate (41) is bent to form and institute State the first turnup structure (413) of shaft (10) cooperation；The inner edge of the shielding cover board (50) is bent to form and the shaft (10) the second turnup structure (52) cooperated, the outer periphery bending of the shielding cover board (50) is formed to be cooperated with the coaming plate (42) Third turnup structure (53).

6. a kind of electronic water pump characterized by comprising

Sequentially connected pump head (70), pump case (80) and pump cover (90), the pump head (70), the pump case (80) and the pump cover (90) accommodating chamber is surrounded；

Separation sleeve (100), the axial ends of the separation sleeve (100) connect with the pump case (80) and the pump cover (90) respectively It connects, the accommodating chamber is divided into wet chamber (101) and dry chamber (102)；

Rotor assembly, in the wet chamber (101), the rotor assembly is to appoint in claim 1 to 5 for the rotor assembly setting Rotor assembly described in one.

7. electronic water pump according to claim 6, which is characterized in that the electronic water pump further includes being arranged in the rotor Impeller (60) in the shaft (10) of component, the impeller (60) include:

Impeller lower cover (61), the impeller lower cover (61) include lower cover ontology (611) and are arranged on the lower cover ontology (611) Blade (612), the blade (612) is provided with welding bar (613) far from the end face of the lower cover ontology (611)；

Impeller upper cover (62) offers the compatible welding groove with the welding bar (613) on the impeller upper cover (62) (621), after the welding bar (613) protrudes into the welding groove (621), the impeller upper cover (62) and the impeller lower cover (61) Pass through ultrasonic bonding.

8. electronic water pump according to claim 7, which is characterized in that the separate lower cover ontology of the blade (612) (611) it is additionally provided with positioning column (614), is also provided on the impeller upper cover (62) and the positioning column (614) on end face Compatible location hole (622).

9. electronic water pump according to claim 6, which is characterized in that the electronic water pump further includes socket (110), contact pin (120) it is fixedly connected with control panel (130), the socket (110) with the pump case (80), the contact pin (120) is arranged in institute It states in socket (110), is offered pin holes (131) on the control panel (130), the part contact pin (120) is by the socket (110) it is stretched out in and is inserted into the pin holes (131).

10. electronic water pump according to claim 9, which is characterized in that the contact pin (120) is Z-shaped.