CN110873062A - Electronic water pump and casing assembly thereof - Google Patents
Electronic water pump and casing assembly thereof Download PDFInfo
- Publication number
- CN110873062A CN110873062A CN201811014637.0A CN201811014637A CN110873062A CN 110873062 A CN110873062 A CN 110873062A CN 201811014637 A CN201811014637 A CN 201811014637A CN 110873062 A CN110873062 A CN 110873062A
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- injection molding
- stator
- casing
- water pump
- electronic water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000001746 injection moulding Methods 0.000 claims abstract description 123
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 241000283216 Phocidae Species 0.000 claims abstract 2
- 239000002991 molded plastic Substances 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 229920001187 thermosetting polymer Polymers 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 13
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 9
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 40
- 239000007924 injection Substances 0.000 description 40
- 239000004412 Bulk moulding compound Substances 0.000 description 11
- 239000012778 molding material Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an electronic water pump and a shell assembly thereof. Wherein, electronic pump's casing subassembly includes: stator module, pivot, axle base and casing injection molding body, stator module wholly moulds plastics and forms, and the casing subassembly secondary is moulded plastics and is formed, and inside pivot and the equal embedding casing injection molding of axle base, stator module wraps up in the inside self sealss that forms of casing injection molding. According to the casing assembly of the electronic water pump, the stator assembly is integrally formed by injection molding, and then the stator assembly and the casing are subjected to secondary injection molding to realize a self-sealing effect with the rotor, so that a separation sleeve between air gaps of the stator and the rotor is omitted, the material cost of the casing is reduced, the assembly process of the electronic water pump is simplified, the rigidity of the stator assembly is improved, the noise of the electronic water pump is favorably improved, and the operation reliability of the electronic water pump is improved.
Description
Technical Field
The invention relates to the technical field of electronic water pumps, in particular to a shell assembly of an electronic water pump and the electronic water pump comprising the shell assembly.
Background
In view of the large environment with economical energy, modern high-end automobiles and electric automobiles mostly use electronic cooling water pumps to replace original mechanical water pumps, and compared with traditional water pumps, the electronic water pumps have the advantages of being accurate in control and higher in efficiency. The traditional electronic water pump has the advantages that the stator is arranged in the shell, the rotor and the impeller are arranged in the hydraulic part, and the isolation sleeve is arranged between the stator and the rotor to play a sealing role.
The utility model discloses an electronic water pump's motor structure in the correlation technique, stator module include that dabber, armature, back thrust pad, stator mould plastics the layer, and armature, dabber and back thrust pad mould plastics integratively, and the stator layer of moulding plastics has the effect of motor casing, end cover and stator separation sleeve, and the stator layer of moulding plastics is BMC thermosetting module, has following drawback: 1) the stator injection molding layer adopts a BMC (bulk molding compound) thermosetting module, so that the strength is low, and the strength requirement of the motor shell cannot be met; 2) the stator injection layer has large volume and long injection molding time, and is easy to damage windings and the like wrapped inside the stator injection layer; 3) if the stator injection molding layer adopts the PPS material with higher strength, the manufacturing cost is increased.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
Therefore, the invention aims to provide a casing assembly of an electronic water pump.
The second aspect of the invention provides an electronic water pump comprising the above casing assembly.
In order to achieve the purpose, the technical scheme of the invention provides a casing assembly of an electronic water pump, the casing assembly comprises a stator assembly, a rotating shaft, a shaft base and a casing injection molding body, the stator assembly is integrally formed by injection molding, the casing assembly is formed by secondary injection molding, the rotating shaft and the shaft base are both embedded into the casing injection molding body, and the stator assembly is wrapped in the casing injection molding body to form self-sealing.
According to the casing assembly of the electronic water pump provided by the technical scheme of the invention, the stator assembly is integrally formed by injection molding, and then the stator assembly and the casing are subjected to secondary injection molding to realize a self-sealing effect with the rotor, so that a separation sleeve between air gaps of the stator and the rotor is omitted, the material cost of the casing is reduced, the assembly process of the electronic water pump is simplified, the rigidity of the stator assembly is improved, the noise of the electronic water pump is favorably improved, and the running reliability of the electronic water pump is improved.
Secondly, the stator assembly is integrally injection-molded firstly, and then the shell assembly is injection-molded secondly, so that the stator injection molding body of the injection-molded stator assembly and the shell injection molding body of the injection-molded shell assembly can adopt different injection molding materials, the required strength of the shell injection molding body is high, the injection molding material with higher cost can be adopted, the required strength of the stator injection molding body is low, the injection molding material with lower cost can be adopted, and compared with the prior art in which the stator injection molding layer is used as a motor shell, the scheme not only ensures the strength of the shell injection molding body, but also saves the material cost; and the stator injection molding body and the machine shell injection molding body are respectively subjected to injection molding, so that the volume of the stator injection molding body is smaller, the injection molding time is shorter, and the stator injection molding body cannot damage parts such as a winding inside the stator injection molding body during injection molding, so that the performance reliability of the electronic water pump is ensured.
In addition, the casing assembly of the electronic water pump provided in the above technical solution of the present invention may further have the following additional technical features:
in the above technical solution, preferably, the stator assembly includes a contact pin, a winding, an insulating frame, a stator core, and a stator injection molded body, the insulating frame wraps the stator core, the winding is wound around a tooth portion of the insulating frame, the contact pin is fixed in a groove of the insulating frame, and the stator injection molded body wraps and fastens the contact pin, the winding, the insulating frame, and the stator core.
Utilize the stator injection molding body to wrap up the whole part of stator module and fasten to as an organic whole with stator module whole injection molding.
In the above technical solution, preferably, the stator assembly includes a stator injection molded body, the stator injection molded body is a thermosetting material, and a solid deformation temperature of the thermosetting material is not lower than an injection molding temperature of the casing injection molded body.
The stator injection molding body is made of a thermosetting material, preferably a BMC (bulk molding compound) thermosetting material, so that the material cost is low; the solid deformation temperature of the thermosetting material is not lower than the injection molding temperature of the casing injection molding body, so that the risk of melting the once injection molded stator injection molding body during secondary injection molding of the casing assembly is avoided.
In the above technical solution, preferably, the stator assembly includes a stator injection molded body, the stator injection molded body is a thermosetting material, and the casing injection molded body is a PPS material.
The stator injection molding body is made of a thermosetting material with low cost, preferably a BMC (bulk molding compound) thermosetting material, and the machine shell injection molding body is made of a PPS (polyphenylene sulfide) material with high strength, so that the strength of the machine shell injection molding body is ensured, and the material cost is saved.
The technical scheme of the second aspect of the invention provides an electronic water pump, which comprises a hydraulic part, a brushless motor part and a control part, wherein the hydraulic part comprises a pump shell and an impeller; the brushless motor part comprises a rotor and a shell component according to any one of the technical schemes; the control part comprises a control panel and a rear end cover; the brushless motor part is arranged between the hydraulic part and the control part.
The electronic water pump provided by the technical scheme of the invention has the beneficial effects of the casing assembly of any technical scheme because the electronic water pump comprises the casing assembly of any technical scheme.
In the above technical solution, preferably, the impeller and the rotor are integrally injection-molded to form an impeller rotor assembly.
The impeller of water conservancy portion and the rotor of brushless motor portion integrative injection moulding form, install respectively in pump case and casing inside for the manufacturing of impeller rotor subassembly is convenient, and is with low costs.
In the above technical scheme, preferably, the impeller includes impeller main part and blade, the rotor includes rotor core, magnet steel and axle sleeve, the last magnet steel groove that is equipped with of rotor core, the magnet steel is installed in the magnet steel inslot, rotor core with the magnet steel plastic envelope is in the inside impeller rotor subassembly that becomes of impeller main part is one, the axle sleeve secondary mould plastics in impeller rotor subassembly becomes impeller rotor subassembly two in one.
The impeller rotor component comprises an impeller and a rotor, wherein the impeller comprises an impeller main body and blades; the rotor comprises an iron core, magnetic steel and a shaft sleeve, the impeller rotor assembly is formed through a two-step injection molding process, the impeller main body is formed through injection molding in the first step, the shaft sleeve is formed through injection molding in the second step, and therefore injection molding materials used when the impeller main body and the shaft sleeve are respectively formed through injection molding can be different; secondly, the iron core and the magnetic steel are plastically packaged in the impeller main body and firmly bonded; the shaft sleeve is small in size and light in weight, when the impeller rotor assembly rotates, the torque for driving the shaft sleeve to rotate is small, and the shaft sleeve is not easy to slip; and the impeller main body is large in volume, the shaft sleeve is small in volume, the speed is high during the injection molding of the shaft sleeve, the influence on the impeller rotor assembly is avoided, the impeller main body which is subjected to the first injection molding cannot be melted during the secondary injection molding of the shaft sleeve, and therefore the risk that the iron core and the magnetic steel shift is well avoided.
In the above technical solution, preferably, the blade is an injection molded body, and the impeller rotor assembly two and the blade are welded together by ultrasonic welding.
The impeller is formed by an ultrasonic welding process, and the blades and the two impeller rotor assemblies are welded into a whole by ultrasonic waves; the injection mold for integrally injection molding the impeller is complex in structure and high in maintenance cost, so that the impeller is divided into the impeller main body and the blade to be respectively injection molded, and then ultrasonic welding is used for molding, the injection mold is simple in structure, and the maintenance cost of the injection mold is greatly reduced.
In any of the above technical solutions, preferably, a first seal ring is installed between the front end of the casing injection molded body of the casing assembly and the pump casing to form a closed hydraulic cavity; and a second sealing ring is arranged between the rear end of the machine shell injection molding body of the machine shell component and the rear end cover to form a closed electric control cavity.
The control panel of the control part is arranged in an electric control cavity enclosed by the casing and the rear end cover, and the brushless motor part is arranged between the water conservancy part and the control part; the stator module of the brushless motor part is formed by integral injection molding and is formed by secondary injection molding with the shell; sealing rings are respectively arranged between the casing of the brushless motor part and the pump casing, and between the casing of the brushless motor part and the rear end cover, so that the electronic water pump is sealed.
In any one of the above technical solutions, preferably, the hydraulic part and the brushless motor part are fixedly connected by screws, and the brushless motor part and the control part are fixedly connected by screws, so that the assembly is convenient and the connection is firm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional structural schematic view of a stator assembly of one embodiment of the present invention;
FIG. 2 is a cross-sectional structural schematic of the housing assembly of one embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an electronic water pump according to an embodiment of the invention;
fig. 4 is a cross-sectional structural schematic view of an impeller rotor assembly according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
1 casing subassembly, 11 stator module, 111 contact pins, 112 windings, 113 stator core, 114 stator injection molding, 115 insulating frame, 12 pivots, 13 axle bases, 14 casing injection molding, 2 pump casings, 3 impeller rotor subassemblies, 31 axle sleeves, 32 magnet steel, 33 rotor core, 34 impeller main parts, 35 blades, 4 first sealing rings, 5 second sealing rings, 6 control panels, 7 rear end covers.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An electronic water pump and a casing assembly thereof according to some embodiments of the present invention will be described with reference to fig. 1 to 4.
As shown in fig. 2 and 3, according to some embodiments of the present invention, a casing assembly 1 of an electronic water pump includes a stator assembly 11, a rotating shaft 12, a shaft base 13, and a casing injection molded body 14, the stator assembly 11 is integrally formed by injection molding, the casing assembly 1 is formed by secondary injection molding, the rotating shaft 12 is in interference fit with the shaft base 13, both the rotating shaft 12 and the shaft base 13 are embedded in the casing injection molded body 14, and the stator assembly 11 is wrapped in the casing injection molded body 14 to form a self-sealing structure.
According to the casing assembly 1 of the electronic water pump provided by the embodiment of the invention, the stator assembly 11 is integrally formed by injection molding, and then the stator assembly 11 and the casing are subjected to secondary injection molding to realize a self-sealing effect with the rotor, so that a separation sleeve between air gaps of the stator and the rotor is omitted, the material cost of the casing is reduced, the assembly process of the electronic water pump is simplified, the rigidity of the stator assembly 11 is improved, the improvement of the noise of the electronic water pump is facilitated, and the operation reliability of the electronic water pump is improved, therefore, the casing assembly 1 of the electronic water pump has obvious advantages in mounting process, cost and performance.
Secondly, the stator assembly 11 is integrally injection-molded firstly, and then the shell assembly 1 is injection-molded secondly, so that the stator injection molding body 114 of the injection-molded stator assembly 11 and the machine shell injection molding body 14 of the injection-molded shell assembly 1 can adopt different injection molding materials, the machine shell injection molding body 14 has high required strength, the injection molding material with higher cost can be adopted, the strength required by the stator injection molding body 114 is low, the injection molding material with lower cost can be adopted, and compared with the stator injection molding layer serving as a motor shell in the related technology, the scheme not only ensures the strength of the machine shell injection molding body 14, but also saves the material cost; and thirdly, the stator injection molding body 114 and the machine shell injection molding body 14 are respectively subjected to injection molding, so that the volume of the stator injection molding body 114 is small, the injection molding time is short, and the stator injection molding body 114 cannot damage parts such as a winding 112 in the stator injection molding body 114 during injection molding, so that the performance reliability of the electronic water pump is ensured.
In an embodiment of the present invention, as shown in fig. 1, the stator assembly 11 includes a pin 111, a winding 112, an insulating frame 115, a stator core 113, and a stator injection molded body 114, the insulating frame 115 wraps the stator core 113, the winding 112 is wound on a tooth portion of the insulating frame 115, the pin 111 is fixed in a groove of the insulating frame 115, the stator injection molded body 114 wraps and fastens the pin 111, the winding 112, the insulating frame 115, and the stator core 113, and the stator injection molded body 114 wraps and fastens the whole part of the stator assembly 11, thereby integrally injection molding the stator assembly 11 as a whole.
Preferably, the stator assembly 11 includes a stator injection molded body 114, and the stator injection molded body 114 is a thermosetting material having a set deformation temperature not lower than the injection molding temperature of the housing injection molded body 14.
The stator injection molding body 114 is made of thermosetting materials, preferably BMC (bulk molding compound) thermosetting materials, so that the material cost is low; the setting temperature of the thermosetting material is not lower than the injection temperature of the housing injection molded body 14, so as to avoid the risk of melting the once injection molded stator injection molded body 114 when the housing assembly 1 is injection molded twice.
Preferably, the stator assembly 11 includes a stator injection molded body 114, the stator injection molded body 114 is a thermoset material, and the case injection molded body 14 is a PPS material.
The stator injection molding body 114 is made of a low-cost thermosetting material, preferably a BMC (bulk molding compound) thermosetting material, and the housing injection molding body 14 is made of a PPS (polyphenylene sulfide) material with high strength, so that the strength of the housing injection molding body 14 is ensured, and the material cost is saved.
As shown in fig. 3, an embodiment of a second aspect of the present invention provides an electronic water pump, including a hydraulic part, a brushless motor part, and a control part, where the hydraulic part includes a pump casing 2 and an impeller; the brushless motor portion includes a rotor and the housing assembly 1 as in any of the above embodiments; the control part comprises a control panel 6 and a rear end cover 7; the brushless motor part is arranged between the hydraulic part and the control part.
The electronic water pump provided by the above embodiment of the present invention includes the casing assembly 1 according to any of the above embodiments, so that the electronic water pump has the beneficial effects of the casing assembly 1 according to any of the above embodiments, and details are not repeated herein.
Preferably, as shown in fig. 3 and 4, the impeller and the rotor are integrally injection molded to form the impeller rotor assembly 3.
The impeller of water conservancy portion and the rotor of brushless motor portion integrative injection moulding form, install respectively in pump case 2 and casing inside for the manufacturing of impeller rotor subassembly 3 is convenient, and is with low costs.
In an embodiment of the present invention, as shown in fig. 4, the impeller includes an impeller main body 34 and blades 35, the rotor includes a rotor core 33, magnetic steels 32 and a shaft sleeve 31, the rotor core 33 is provided with magnetic steel 32 slots, the magnetic steels 32 are installed in the magnetic steel 32 slots, the rotor core 33 and the magnetic steels 32 are plastic-encapsulated inside the impeller main body 34 to form an impeller rotor assembly one, and the shaft sleeve 31 is injection-molded into the impeller rotor assembly one to form an impeller rotor assembly two.
The impeller rotor assembly 3 of the above scheme comprises an impeller and a rotor, wherein the impeller comprises an impeller main body 34 and blades 35; the rotor comprises a rotor iron core 33, magnetic steel 32 and a shaft sleeve 31, the impeller rotor assembly 3 is formed by a two-step injection molding process, the impeller main body 34 is formed by injection molding in the first step, and the shaft sleeve 31 is formed by injection molding in the second step, so that injection molding materials used in the respective injection molding of the impeller main body 34 and the shaft sleeve 31 can be different, the material requirement of the injection molding impeller main body 34 is high strength and acid and alkali resistance, the material requirement of the injection molding shaft sleeve 31 is wear resistance, high strength and acid and alkali resistance, the material cost used by the injection molding shaft sleeve 31 is high, the material cost used by the injection molding impeller main body 34 is low, and compared with the impeller rotor assembly 3 formed by integrally injection molding; secondly, the iron core and the magnetic steel 32 are plastically packaged in the impeller main body 34 and firmly bonded; the shaft sleeve 31 has small volume and light weight, when the impeller rotor assembly 3 rotates, the torque for driving the shaft sleeve 31 to rotate is small, and the shaft sleeve 31 is not easy to slip; thirdly, the impeller main body 34 is large in size, the shaft sleeve 31 is small in size, the speed is high when the shaft sleeve 31 is injection molded, the influence on the impeller rotor assembly is avoided, the impeller main body which is injection molded for the first time cannot be melted when the shaft sleeve 31 is injection molded for the second time, and therefore the risk that the iron core and the magnetic steel 32 shift is well avoided.
Further, as shown in fig. 4, the blades 35 are injection molded bodies, and the impeller rotor assembly two and the blades 35 are integrally welded by ultrasonic welding.
The impeller is formed through an ultrasonic welding process, and the blades 35 and the two impeller rotor assemblies are welded into a whole through ultrasonic waves; the injection mold for the integral injection molding of the impeller is complex in structure and high in maintenance cost, the impeller is divided into two parts, namely an impeller main body 34 and a blade 35, which are respectively subjected to injection molding, welding wires are arranged on the blade 35, a welding groove is formed in the impeller main body 34, and then ultrasonic welding is used for forming.
Specifically, a first sealing ring 4 is arranged between the front end of a casing injection molding body 14 of the casing assembly 1 and the pump casing 2 to form a closed hydraulic cavity; a second sealing ring 5 is arranged between the rear end of the casing injection molding body 14 of the casing component 1 and the rear end cover 7 to form a closed electric control cavity.
The control panel 6 of the control part is arranged in an electric control cavity enclosed by the machine shell and the rear end cover 7, and the brushless motor part is arranged between the water conservancy part and the control part; the stator module 11 of the brushless motor part is formed by integral injection molding and is formed by secondary injection molding with the shell; sealing rings are respectively arranged between the casing of the brushless motor part and the pump casing 2, and between the casing of the brushless motor part and the rear end cover 7, so that the electronic water pump is sealed.
Preferably, the hydraulic part and the brushless motor part are fixedly connected through screws, and the brushless motor part and the control part are fixedly connected through screws, so that the assembly is convenient, and the connection is firm.
In one embodiment, as shown in fig. 3, the electronic water pump includes a hydraulic unit, a brushless motor unit, and a control unit; the impeller of the hydraulic part and the rotor of the brushless motor part are integrally formed by injection molding and are respectively arranged in the pump shell 2 and the machine shell; the control panel 6 of the control part is arranged in an electric control cavity enclosed by the machine shell and the rear end cover 7, and the brushless motor part is arranged between the hydraulic part and the control part; the stator module 11 of the brushless motor part is formed by integral injection molding and is formed by secondary injection molding with the shell; sealing rings are respectively arranged between the shell of the brushless motor part and the pump shell 2 as well as between the shell of the brushless motor part and the rear end cover 7, so that the electronic water pump is sealed; the scheme utilizes the integral injection molding technology of the stator and the shell, so that the material cost of the shell of the traditional electronic water pump is saved, the isolation sleeve in the middle of the air gap between the stator and the rotor is also saved, and the installation process of the electronic water pump is simplified; in addition, the improvement of the rigidity of the stator is also beneficial to the improvement of the noise of the electronic water pump, so that the scheme has remarkable advantages in mounting process, cost and performance.
Specifically, the electronic water pump is an electronic water pump for a vehicle.
In the description of the present invention, it is to be understood that the terms "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, e.g., "connected" may be a fixed connection, a detachable connection, an integral connection, or an electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A shell component of an electronic water pump is characterized in that,
the casing subassembly includes stator module, pivot, axle base and casing injection molding body, stator module wholly moulds plastics and forms, the casing subassembly secondary is moulded plastics and is formed, the pivot with the axle base all imbeds inside the casing injection molding body, stator module wrap up in the inside self sealss that forms of casing injection molding body.
2. The housing assembly of an electronic water pump of claim 1,
the stator assembly comprises a contact pin, a winding, an insulating frame, a stator core and a stator injection molding body, the insulating frame wraps the stator core, the winding is wound on a tooth part of the insulating frame, the contact pin is fixed in a groove of the insulating frame, and the stator injection molding body wraps and fastens the contact pin, the winding, the insulating frame and the stator core.
3. The housing assembly of an electronic water pump according to claim 1 or 2,
the stator assembly comprises a stator injection molding body, the stator injection molding body is made of thermosetting materials, and the solid deformation temperature of the thermosetting materials is not lower than the injection molding temperature of the casing injection molding body.
4. The housing assembly of an electronic water pump according to claim 1 or 2,
the stator assembly comprises a stator injection molding body, the stator injection molding body is made of a thermosetting material, and the casing injection molding body is made of a PPS (polyphenylene sulfide) material.
5. An electronic water pump comprises a hydraulic part, a brushless motor part and a control part, and is characterized in that,
the hydraulic part comprises a pump shell and an impeller;
the brushless motor portion includes a rotor and the housing assembly of any one of claims 1 to 4;
the control part comprises a control panel and a rear end cover;
the brushless motor part is arranged between the hydraulic part and the control part.
6. The electronic water pump of claim 5,
the impeller and the rotor are integrally formed into an impeller rotor component through injection molding.
7. The electronic water pump of claim 6,
the impeller comprises an impeller main body and blades, the rotor comprises a rotor core, magnetic steel and a shaft sleeve, a magnetic steel groove is formed in the rotor core, the magnetic steel is installed in the magnetic steel groove, the rotor core and the magnetic steel plastic package are in the impeller main body, a first impeller rotor assembly is formed inside the impeller main body, and a second impeller rotor assembly is formed in the first impeller rotor assembly through secondary injection molding of the shaft sleeve.
8. The electronic water pump of claim 7,
the blade is the injection molding body, impeller rotor subassembly two with the blade is through ultrasonic bonding one-tenth an organic whole.
9. The electronic water pump according to any one of claims 5 to 8,
a first sealing ring is arranged between the front end of the casing injection molding body of the casing component and the pump casing to form a closed hydraulic cavity;
and a second sealing ring is arranged between the rear end of the machine shell injection molding body of the machine shell component and the rear end cover to form a closed electric control cavity.
10. The electronic water pump according to any one of claims 5 to 8,
the hydraulic part and the brushless motor part are fixedly connected through screws, and the brushless motor part and the control part are fixedly connected through screws.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014637.0A CN110873062A (en) | 2018-08-31 | 2018-08-31 | Electronic water pump and casing assembly thereof |
| JP2021518843A JP7118257B2 (en) | 2018-08-31 | 2019-07-08 | Electronic water pump and its housing assembly |
| EP19853681.5A EP3800355A4 (en) | 2018-08-31 | 2019-07-08 | Electronic water pump and housing assembly thereof |
| PCT/CN2019/094988 WO2020042761A1 (en) | 2018-08-31 | 2019-07-08 | Electronic water pump and housing assembly thereof |
| US17/119,173 US12078191B2 (en) | 2018-08-31 | 2020-12-11 | Electronic water pump and housing assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014637.0A CN110873062A (en) | 2018-08-31 | 2018-08-31 | Electronic water pump and casing assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Cited By (3)
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| WO2021218728A1 (en) * | 2020-04-30 | 2021-11-04 | 杭州三花研究院有限公司 | Fabrication method for rotor assembly, rotor assembly, and electric pump |
| CN113969821A (en) * | 2020-07-24 | 2022-01-25 | 安徽威灵汽车部件有限公司 | Electronic water pump and vehicle |
| CN115230101A (en) * | 2022-08-08 | 2022-10-25 | 常州市东南电器电机有限公司 | Split type rotor structure of multistage and injection moulding device thereof |
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