WO2017000113A1 - 电机、洗涤泵、洗碗机和电机的制造方法 - Google Patents

电机、洗涤泵、洗碗机和电机的制造方法 Download PDF

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Publication number
WO2017000113A1
WO2017000113A1 PCT/CN2015/082636 CN2015082636W WO2017000113A1 WO 2017000113 A1 WO2017000113 A1 WO 2017000113A1 CN 2015082636 W CN2015082636 W CN 2015082636W WO 2017000113 A1 WO2017000113 A1 WO 2017000113A1
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WO
WIPO (PCT)
Prior art keywords
motor
stator
winding
assembly
stator assembly
Prior art date
Application number
PCT/CN2015/082636
Other languages
English (en)
French (fr)
Inventor
彭小军
史长忠
耿文骥
Original Assignee
广东威灵电机制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东威灵电机制造有限公司 filed Critical 广东威灵电机制造有限公司
Priority to EP15896644.0A priority Critical patent/EP3316455A4/en
Priority to BR112017028453A priority patent/BR112017028453A2/pt
Priority to PCT/CN2015/082636 priority patent/WO2017000113A1/zh
Publication of WO2017000113A1 publication Critical patent/WO2017000113A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/04—Asynchronous induction motors for single phase current
    • H02K17/08—Motors with auxiliary phase obtained by externally fed auxiliary windings, e.g. capacitor motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/08—Insulating casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the present invention relates to the field of motor technology, and in particular, to a method of manufacturing a motor, a washing pump, a dishwasher, and a motor.
  • the washing pump uses an induction pump, a BLDC (Brushless DC Motor) pump, a permanent magnet synchronous pump, and a DC brush pump.
  • BLDC Battery-Coupled DC Motor
  • the main disadvantage of the BLDC pump is that the cost is high, and if the rotor uses rare earth materials, the cost fluctuates greatly; the starting noise of the permanent magnet synchronous pump is large and the efficiency of the motor is low; the noise of the DC brush pump is too large, The relative life is short; the current industry-designed end caps for induction pumps are aluminum end caps or plastic end caps, which are costly and relatively noisy.
  • the motor of the washing pump has many manufacturing processes and high production cost; in addition, the waterproof performance of the motor is poor, and when there is water leakage on the surface of the motor, it is easy to cause leakage or short circuit. , poor reliability.
  • the object of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide a method for manufacturing a motor, a washing pump, a dish washer and a motor, which have good waterproof effect, high reliability and low cost.
  • the technical solution of the present invention is: an electric machine comprising a stator assembly and a rotor assembly rotatably disposed in the stator assembly, the rotor assembly including a rotating shaft, the stator assembly including a stator core And a winding disposed around the stator core, the stator assembly further includes an overmolding portion wrapped around the winding and the outer side of the stator core, the plastic molding portion being embedded or integrally formed for A front cover and a rear cover that support the rotating shaft.
  • the front cover is press-fitted into the plastic molding portion or placed in the injection molding mold to be positioned in the injection molding mold;
  • the rear cover is press-fitted into the plastic molding portion or in the injection molding
  • the overmolding portion is placed in an injection mold for positioning.
  • the winding is connected with a power line, and the end of the power line that is connected to the winding is used by the package Plastic part coating.
  • the overmolding portion has a first receiving groove for receiving the front cover, and the front cover is embedded in the first receiving groove, and the front cover is disposed in the front cover a first bearing, the rotating shaft is disposed through the first bearing
  • the overmolding portion has a second receiving groove for receiving the back cover, and an outer sidewall of the back cover is in contact with a sidewall of the second receiving slot, the rear The end of the cover is in contact with the bottom of the second receiving slot, and the outer side of the rear cover is integrally formed with a flange that is engaged with the sidewall of the second receiving slot, and the second cover is provided with a second a bearing, the rotating shaft is disposed through the second bearing.
  • the rotor assembly is connected with a ventilation fan
  • the stator assembly has a cavity for accommodating the ventilation vane
  • the plastic molding portion is provided with a ventilation hole communicating with the inner cavity.
  • the present invention also provides a washing pump, the washing pump comprising a lower pump casing, the washing pump further comprising the motor described above, the motor being coupled to the lower pump casing.
  • the lower pump casing has a stud
  • the stator assembly of the motor has a positioning hole for inserting the stud
  • the stator assembly of the motor has a stud
  • the pump casing is described as having a positioning hole for the insertion of the stud.
  • a side of the lower pump casing is provided with a capacitor mounting leg, the capacitor mounting leg includes a capacitive contact wall contacting the capacitor and connecting the capacitive contact wall and the lower pump casing sidewall
  • the connecting rib is connected; or the capacitor mounting leg is integrally injection molded with the overmolding portion.
  • the capacitive contact wall has an arc shape
  • the connecting ribs are provided with two, and the capacitive contact wall and the two connecting ribs and the side surface of the lower pump casing form a closed annular structure.
  • the present invention also provides a dishwasher including a dishwasher body to which the above-described washing pump is connected.
  • the present invention also provides a method of manufacturing a motor, comprising the steps of: preparing a stator core and a rotor assembly, winding a winding on the stator core, and connecting a power cord to the winding to form a stator semi-finished product, the stator semi-finished product is placed in an injection mold, and an overmolded portion wrapped around the winding and the stator core is injection-molded, and is embedded in the plastic molding portion for supporting the rotor assembly. a front cover or/and a back cover or injecting the plastic molding portion, placing a front cover or/and a rear cover for supporting the rotor assembly in an injection mold by injection molding to obtain a stator assembly, The rotor assembly is rotatably coupled within the stator assembly.
  • the motor, the washing pump, the dishwasher and the manufacturing method of the motor provided by the invention, the front cover and the rear cover can be integrally molded by molding the stator, or can be pressed by the injection after the injection molding is completed.
  • the precision of the assembly process of the front and back covers is high, which greatly improves the noise and vibration of the motor, and can effectively improve the user experience.
  • the stator assembly directly forms a plastic molding part, which eliminates the need to assemble an end cap, has a simple manufacturing process, low material cost and low production cost, and the stator assembly is integrally molded by a plastic molding part, and the motor has good waterproof effect to avoid leakage. Or short circuit, etc., the motor reliability is high.
  • FIG. 1 is a perspective view of a stator semi-finished product in a motor according to an embodiment of the present invention
  • FIG. 2 is a perspective view of a stator assembly in a motor according to an embodiment of the present invention
  • FIG. 3 is a schematic plan view of a stator assembly in a motor according to an embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;
  • FIG. 5 is a partial enlarged view of a portion A in FIG. 4;
  • FIG. 6 is a perspective view of a motor according to an embodiment of the present invention.
  • FIG. 7 is a perspective view of a motor according to an embodiment of the present invention.
  • FIG. 8 is a schematic perspective view of a lower pump casing in a washing pump according to an embodiment of the present invention.
  • FIG. 9 is a perspective view of a washing pump according to an embodiment of the present invention.
  • FIG. 10 is a schematic plan view of a washing pump according to an embodiment of the present invention.
  • Figure 11 is a cross-sectional view taken along line B-B of Figure 10;
  • Embodiments of the invention are a perspective exploded view of a dishwasher provided by an embodiment of the present invention. Embodiments of the invention
  • an embodiment of the present invention provides a motor that can be used as a washing machine motor, such as a washing pump motor in a dishwasher.
  • the motor includes a stator assembly 2 and a rotor assembly 7 rotatably disposed within the stator assembly 2, the rotor assembly 7 including a shaft 72.
  • the stator assembly 2 includes a stator core 12 and a winding 11 wound around the stator core 12, the stator assembly 2 further including a package covering the winding 11 and the stator core 12
  • the plastic part 25, the plastic part 25 can be formed by BMC (Bulk Molding Compound) material, the inner layer of the stator core 12 is exposed, and the remaining parts are all wrapped by the BMC material (the plastic part 25).
  • the overmolding portion 25 is embedded or integrally formed with a front cover 3 and a rear cover 23 for supporting the rotating shaft 72.
  • the front cover 3 and the rear cover 23 may be BB covers.
  • the front cover 3 and the rear cover 23 may be injection molded together with the BMC plastic package in the stator assembly 2, or may be press-fitted and fixed to the stator assembly 2 by press-fitting after the injection molding, and the assembly of the front cover 3 and the rear cover 23
  • the precision of the process is high, and the noise and vibration of the motor are greatly improved, which can effectively improve the user experience.
  • the stator assembly 2 is directly coated with a BMC material to form a plastic molding portion 25, the stator does not need to be assembled with an end cap, and the manufacturing process is simple, the material cost and the production cost are improved, and the stator assembly 2 is integrally packaged by the plastic molding portion 25.
  • Plastic, the stator assembly 2 formed after the overmolding, the BMC material completely wraps the stator semi-finished product 1, and only the inner cavity 121 of the stator core 12 is partially exposed, which has good waterproof effect, avoids leakage or short circuit, and reliability. good.
  • the front cover 3 is press-fitted into the plastic molding portion 25 or placed in the injection molding mold to be positioned in the injection molding mold; the rear cover 23 is press-fitted into the plastic molding portion. 25 or positioning in the injection molding mold 25 is placed in the injection mold, the positioning accuracy of the front cover 3 and the rear cover 23 is high, and the vibration and noise of the motor are small.
  • the winding 11 is connected with a power line 13, and one end of the power line 13 that is in contact with the winding 11 is covered by the plastic part 25, and the waterproof effect is good.
  • the stator core 12 is welded to the power cord 13 after winding the winding 11 (enamel wire), and the stator semi-finished product 1 is processed.
  • the stator semi-finished product 1 Compared with the traditional induction motor, the stator semi-finished product 1 has the advantages of simple and high efficiency, high automation level, etc., which plays an important role in the reduction of production cost.
  • the stator semi-finished product 1 is directly subjected to BMC injection molding to form the plastic molding portion 25.
  • the material after the injection molding is the stator assembly 2, and the stator semi-finished product 1 does not need to pass the traditional dip coating process, and the BMC plastic molding method is simple and efficient. Without the need for a long turnaround, the overall cost of manufacturing is significantly reduced.
  • the plastic molding portion 25 has a first receiving groove 2501 for receiving the front cover 3, and the front cover 3 can be embedded in the first receiving groove 2501 by an interference pressure.
  • the positioning accuracy of the cover 3 is high, and the motor running process is smooth and quiet.
  • a first bearing 61 is disposed in the front cover 3, and one end of the rotating shaft 72 is disposed through the first bearing 61.
  • the front cover 3 may be placed in the injection mold by injection molding the plastic molding portion 25, that is, the front cover 3 may be directly embedded in the plastic molding portion 25 by insert molding.
  • the overmolding portion 25 has a second receiving groove 2502 for receiving the rear cover 23, and an outer side wall of the rear cover 23 is connected to a sidewall of the second receiving groove 2502.
  • the end of the rear cover 23 is in contact with the bottom of the second receiving slot 2 502, and the outer side of the rear cover 23 is integrally formed with a flange 2301 that is engaged with the sidewall of the second receiving slot 2502.
  • the rear cover 23 has high positioning accuracy, and the motor runs smoothly and quietly.
  • a second bearing 62 is disposed in the rear cover 23, and the other end of the rotating shaft 72 is disposed through the second bearing 62.
  • the back cover 23 can be press-fitted into the plastic molding portion 25, or the back cover 23 can be placed in the injection mold by injection molding the plastic molding portion 25, that is, the back cover 23 can be insert-molded. It is directly embedded in the plastic molding portion 25.
  • the rear cover 23 and the front cover 3 form a support structure and support the rotor assembly 7, thereby achieving smooth rotation of the motor.
  • the rear cover 23 can be integrally molded by the stator blank 1 in the BMC molding and placed in the mold, and the end surface 231 and the end surface 232 of the rear cover 23 form a blocking surface with the end surface 222 and the end surface 223 of the plastic molding portion 25, thereby preventing the back cover.
  • the axial displacement of the 23, the end surface 233 of the rear cover 23 and the end surface 221 of the overmolded portion 25 also form a blocking surface, which receives the axial force generated by the rear cover 23 and the bearing 62.
  • the end surface 234 of the rear cover 23 and the end surface 224 of the overmolding portion 25 form a radial engagement surface, which prevents radial displacement of the rear cover 23.
  • the side surface 31 of the front cover 3 is press-fitted into the overmolding portion 25 with the side wall 24 of the overmolding portion 25 in an interference fit, and the front cover 3 is fixed in the axial direction and the radial direction.
  • the front and rear bearings of the rotor assembly 7 (the first bearing 61, the second bearing 62) pass before
  • the support of the cover 3 and the back cover 23 saves the front and rear end covers necessary for the conventional induction motor, which greatly saves the material cost of the motor, and the assembly process and process are simpler than the conventional induction motor, and the quality control level is improved.
  • the rotor assembly 7 is connected with a ventilation fan blade 71, and the stator assembly 2 has a cavity 20 for accommodating the ventilation fan blade 71.
  • the plastic molding portion 25 is disposed with the inner portion.
  • the venting holes 26 communicating with the cavity 20 and the venting holes 26 may be provided in plurality to form an active heat dissipating heat dissipating system, which is beneficial to the heat dissipation of the BMC material in the winding 11 and the plastic molding portion 25, and has good heat dissipation effect, which is beneficial to improving the reliability of the motor. Sex and extend the life of the motor.
  • the wind blower blade 71 may be a squirrel cage type fan blade or the like.
  • the motor provided by the present invention has high assembly precision of the front cover 3 and the rear cover 23, and the noise and vibration of the motor are small.
  • the stator assembly 2 is directly coated with a BMC material to form a plastic molding portion 25, the stator does not need to be assembled with an end cap, and the manufacturing process is simple, the material cost and the production cost are improved, and the stator assembly 2 is integrally packaged by the plastic molding portion 25.
  • Plastic, its waterproof effect is good, to avoid leakage or short circuit, etc., and good reliability.
  • an embodiment of the present invention further provides a washing pump 120, the washing pump 120 includes a lower pump casing 41, and the washing pump 120 further includes the above-mentioned motor, the motor Connected to the lower pump casing 41
  • the lower pump casing 41 has a stud 411
  • the stator assembly 2 of the motor has a positioning hole 27 for inserting the stud 411.
  • the stud 411 and the positioning hole 27 may be provided with At least two, in this embodiment, the stud 411 and the positioning hole 27 are provided with four.
  • the stator assembly 2 of the motor has a stud 411 having a locating hole 27 for insertion of the stud 411.
  • the stud 411 and the positioning hole 27 are used for assembly positioning to prevent rotation of the pump casing 41 under assembly, and the reliability is good.
  • a side of the lower pump casing 41 is provided with a capacitor mounting leg 412, the capacitor mounting leg 412 includes a capacitor contact wall 4123 in contact with the capacitor, and is connected to the capacitor contact wall 4123 and the lower portion Connecting ribs 4122, 4124 between the side walls of the pump casing 41; or, the capacitor mounting legs 412 are integrally injection molded with the overmolding portion 25.
  • the capacitive contact wall 4123 has an arc shape, and two connecting ribs are disposed, and the capacitive contact wall 4123 and the two connecting ribs 4122, 4124 and the side surface of the lower pump casing 41 form a closed shape. Ring structure.
  • the side of the lower pump casing 41 is a capacitor mounting leg 412, and the capacitive contact wall 4 of the capacitor mounting leg 412 123 is connected to the side wall 413 of the lower pump casing 41, and a semi-arc shaped capacitive contact wall 4123 is formed on the outer side of the capacitor contact wall 4123.
  • the semi-arc shaped capacitor contact wall 4123 is closed by the connecting rib 4122 and the connecting rib 4124. Reinforcement structure.
  • the semi-arc shaped capacitive contact wall 4123 is coupled to the sidewall 415 of the lower pump casing 41 by a connection structure 414 located between the connecting ribs 4122, 4124.
  • an embodiment of the present invention further provides a dishwasher, the dishwasher includes a dishwasher body 900, and the dishwasher body 900 is connected to the above-mentioned washing pump. 120.
  • the stator assembly 2 of the motor in the washing pump 120 is directly molded by the BMC material to form the plastic molding portion 25, the stator does not need to be assembled with the end cover, and the manufacturing process is simple, the material cost and the production cost are improved, and the stator assembly 2 is packaged.
  • the plastic part 25 is integrally molded, and the waterproof effect is good, and the leakage or short circuit is not avoided, and the reliability is good.
  • the washing pump 120 is connected to a pump assembly 4, the pump assembly 4 has a water inlet 423 and a first water outlet 421, a second water outlet 322; the water inlet 423 passes through the water inlet pipe 140 The first water outlet 421 and the second water outlet 322 are connected to the dishwasher body 900 through an outlet pipe 130.
  • the dishwasher body 900 is provided with a chassis 150.
  • the chassis 150 is provided with a mounting hole position 1 51.
  • the plastic molding portion 25 of the motor stator in the washing pump 120 is integrally formed with a kyphosis.
  • the stage 22 is inserted into the mounting hole 151, and the rear boss 22 is connected to the back sleeve 160.
  • the side of the rear boss 22 is provided with at least two reinforcing ribs 21.
  • the connection between the dishwasher body 900 and the washing pump 120 is connected to the water inlet 423 of the pump assembly 4 through the inlet pipe 140 (hybrid pipe), the outlet pipe 130 (the hose) and the first water outlet 421 of the pump assembly 4.
  • the second water outlet 322 is connected, and the rear sleeve 160 is connected to the rear boss 22, and the three connections are respectively connected to the chassis 150.
  • the rear boss 22 is supported by three reinforcing ribs 21.
  • An embodiment of the present invention further provides a method of manufacturing a motor, which can be used to manufacture the above motor, comprising the steps of: preparing a stator core 12 and a rotor assembly 7, and winding a winding 11 on the stator core 12 Connecting the power cord 13 to the winding 11 to form a stator blank 1 , and inserting the stator blank 1 into an injection mold to injection mold the cladding portion 25 covering the winding 11 and the stator core 12 , Forming the front cover 3 or/and the rear cover 23 for supporting the rotor assembly 7 or molding the plastic molding portion 25 to the plastic molding portion 25 The front cover 3 or/and the rear cover 23 for supporting the rotor assembly 7 are placed in an injection mold by injection molding to obtain a stator assembly 2, and the rotor assembly 7 is rotatably coupled to the stator assembly.
  • the front cover 3 and the rear cover 23 can be press-fitted into the plastic molding part 25, or the injection molding plastic part 25 can be placed in the mold, and the front cover 3 and the rear cover 23 can be placed in the mold by injection molding, and the positioning precision is high.
  • the operation process is smooth and quiet.
  • the stator core 12 is wound around the winding 11 (enamel wire)
  • the power supply line 13 is welded to obtain the stator semi-finished product 1, and the stator blank 1 is placed in an injection mold, and the winding 11 and the stator core are injection-molded. 12 outer plastic molding portion 25.
  • the manufacturing method of the motor, the washing pump 120, the dishwasher and the motor provided by the embodiment of the present invention, the front cover 3 and the rear cover 23 can be integrally molded by BMC molding in the stator assembly 2, or After the injection molding is completed, it is press-fitted and fixed to the stator assembly 2 by pressing, and the assembly process of the front cover 3 and the rear cover 23 is high in accuracy, which greatly improves the noise and vibration of the motor, and can effectively improve the user experience. .
  • the stator assembly 2 is directly overmolded to form the plastic molding portion 25, the stator does not need to be assembled with the end cover, and the manufacturing process is simple, the material cost and the production cost are good, and the stator assembly 2 is integrally molded by the plastic molding portion 25, the motor It has good waterproof effect, avoids leakage or short circuit, and has good reliability.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

一种电机、洗涤泵、洗碗机和电机的制造方法。电机包括定子总成（2）和转动设置于所述定子总成（2）内的转子总成（7），所述转子总成（7）包括转轴（72），所述定子总成（2）包括定子铁芯（12）和绕设于所述定子铁芯（12）的绕组（11），所述定子总成（2）还包括包覆于所述绕组（11）和所述定子铁芯（12）外侧的包塑部（25），所述包塑部（25）嵌设有或一体成型有用于支撑所述转子总成（7）的前盖（3）和后盖（23）。洗涤泵包括上述电机。洗碗机连接有上述洗涤泵。制造方法用于制造上述电机。所述电机的噪音和振动小，可以有效改善用户体验效果。定子总成（2）直接进行包塑形成包塑部（25），制造工艺简单，材料成本和生产成本低，电机防水效果佳，电机可靠性高。

Description

电机、 洗涤泵、 洗碗机和电机的制造方法 技术领域
[0001] 本发明属于电机技术领域， 尤其涉及一种电机、 洗涤泵、 洗碗机和电机的制造 方法。
背景技术
[0002] 目前的洗涤电器， 例如洗碗机中， 其洗涤泵采用感应电泵、 BLDC (Brushless DC Motor无刷直流电机） 泵、 永磁同步泵、 直流有刷泵。 BLDC泵主要的缺点 是成本较高， 且转子若使用稀土材料， 则成本波动较大； 对于永磁同步泵的启 动噪音较大且电机的效率也较低； 直流有刷泵的噪音偏大， 相对寿命较短； 感 应电泵当前的行业设计的端盖为铝端盖或塑料端盖， 成本较高， 且噪音相对偏 高。 而且， 上述的传统的洗碗机中洗涤泵的电机的制造工序较多， 生产成本较 高； 另外， 电机的防水性能较差， 当电机表面有水渗漏吋， 易引起漏电或短路 等不良， 可靠性欠佳。
技术问题
[0003] 本发明的目的在于克服上述现有技术的不足， 提供了一种电机、 洗涤泵、 洗碗 机和电机的制造方法， 其防水效果好、 可靠性高且成本低。
问题的解决方案
技术解决方案
[0004] 本发明的技术方案是： 一种电机， 包括定子总成和转动设置于所述定子总成内 的转子总成， 所述转子总成包括转轴， 所述定子总成包括定子铁芯和绕设于所 述定子铁芯的绕组， 所述定子总成还包括包覆于所述绕组和所述定子铁芯外侧 的包塑部， 所述包塑部嵌设有或一体成型有用于支撑所述转轴的前盖和后盖。
[0005] 可选地， 所述前盖压嵌于所述包塑部或于注塑所述包塑部吋放置于注塑模具中 定位； 所述后盖压嵌于所述包塑部或于注塑所述包塑部吋放置于注塑模具中定 位。
[0006] 可选地， 所述绕组连接有电源线， 所述电源线与所述绕组相接的一端由所述包 塑部包覆。
[0007] 可选地， 所述包塑部具有用于容放所述前盖的第一容槽， 所述前盖过盈压嵌于 所述第一容槽内， 所述前盖内设置有第一轴承， 所述转轴穿设于所述第一轴承
[0008] 可选地， 所述包塑部具有用于容放所述后盖的第二容槽， 所述后盖的外侧壁与 所述第二容槽的侧壁相接， 所述后盖的端部与所述第二容槽的底部相接， 所述 后盖的外侧还一体成型有卡嵌于所述第二容槽侧壁的凸缘， 所述后盖内设置有 第二轴承， 所述转轴穿设于所述第二轴承。
[0009] 可选地， 所述转子总成连接有通风风叶， 所述定子总成具有容纳所述通风风叶 的内腔， 所述包塑部设置有与所述内腔相通的通风孔。
[0010] 本发明还提供了一种洗涤泵， 所述洗涤泵包括下泵壳， 所述洗涤泵还包括上述 的电机， 所述电机连接于所述下泵壳。
[0011] 可选地， 所述下泵壳具有凸柱， 所述电机的定子总成具有用于供所述凸柱插入 的定位孔； 或者， 所述电机的定子总成具有凸柱， 所述下泵壳具有用于供所述 凸柱插入的定位孔。
[0012] 可选地， 所述下泵壳的侧面设置有电容安装脚， 所述电容安装脚包括与电容相 接触的电容接触壁和连接于所述电容接触壁与所述下泵壳侧壁之间的连接筋； 或者， 所述电容安装脚与所述包塑部一体注塑成型。
[0013] 可选地， 所述电容接触壁呈弧形， 所述连接筋设置有两条， 所述电容接触壁和 两条所述连接筋、 下泵壳的侧面形成闭合环形结构。
[0014] 本发明还提供了一种洗碗机， 所述洗碗机包括洗碗机本体， 所述洗碗机本体连 接有上述的洗涤泵。
[0015] 本发明还提供了一种电机的制造方法， 包括以下步骤： 制备定子铁芯和转子总 成， 于所述定子铁芯上绕设绕线， 将电源线连接于所述绕线形成定子半成品， 将所述定子半成品放入注塑模具中注塑成型包覆于所述绕线和所述定子铁芯外 侧的包塑部， 于所述包塑部压嵌用于支撑所述转子总成的前盖或 /和后盖或于注 塑所述包塑部吋将用于支撑所述转子总成的前盖或 /和后盖放置于注塑模具中通 过注塑定位， 得到定子总成， 将所述转子总成转动连接于所述定子总成内。 发明的有益效果
有益效果
[0016] 本发明所提供的电机、 洗涤泵、 洗碗机和电机的制造方法， 其前盖和后盖可以 在定子总进行塑封吋一起注塑定位， 也可以在注塑完成后通过压入的方式压嵌 固定于定子总成， 前盖和后盖的装配工艺的精确度高， 对电机的噪音和振动有 很大改善， 可以有效改善用户体验效果。 定子总成直接进行包塑形成包塑部， 无需装配端盖， 制造工艺简单， 材料成本和生产成本低， 而且， 定子总成采用 包塑部进行整体包塑， 电机防水效果佳， 避免引起漏电或短路等不良， 电机可 靠性高。
对附图的简要说明
附图说明
[0017] 为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例中所需要使用 的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些实 施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以 根据这些附图获得其他的附图。
[0018] 图 1是本发明实施例提供的电机中定子半成品的立体示意图；
[0019] 图 2是本发明实施例提供的电机中定子总成的立体示意图；
[0020] 图 3是本发明实施例提供的电机中定子总成的平面示意图；
[0021] 图 4是图 3中 A-A剖面的剖面示意图；
[0022] 图 5是图 4中 A处局部放大示意图；
[0023] 图 6是本发明实施例提供的电机的立体示意图；
[0024] 图 7是本发明实施例提供的电机的立体示意图；
[0025] 图 8是本发明实施例提供的洗涤泵中下泵壳的立体示意图；
[0026] 图 9是本发明实施例提供的洗涤泵的立体示意图；
[0027] 图 10是本发明实施例提供的洗涤泵的平面示意图；
[0028] 图 11是图 10中 B-B剖面的剖面示意图；
[0029] 图 12是本发明实施例提供的洗碗机的立体分解示意图。 本发明的实施方式
[0030] 为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实施 例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅 用以解释本发明， 并不用于限定本发明。
[0031] 需要说明的是， 当元件被称为 "固定于"或"设置于"另一个元件， 它可以直接 在另一个元件上或者可能同吋存在居中元件。 当一个元件被称为是 "连接于"另 一个元件， 它可以是直接连接到另一个元件或者可能同吋存在居中元件。
[0032] 还需要说明的是， 本发明实施例中的左、 右、 上、 下等方位用语， 仅是互为相 对概念或是以产品的正常使用状态为参考的， 而不应该认为是具有限制性的。
[0033] 如图 1〜图 7所示， 本发明实施例提供的一种电机， 电机可以用作洗涤电器的电 机， 例如洗碗机中的洗涤泵电机。 上述电机包括定子总成 2和转动设置于所述定 子总成 2内的转子总成 7, 所述转子总成 7包括转轴 72。 所述定子总成 2包括定子 铁芯 12和绕设于所述定子铁芯 12的绕组 11 , 所述定子总成 2还包括包覆于所述绕 组 11和所述定子铁芯 12外侧的包塑部 25, 包塑部 25可以采用 BMC (Bulk Molding Compound, 团状模塑料） 材料成型， 定子铁芯 12的内层外露， 其余的 部位全部被 BMC材料 （包塑部 25) 包裹。 所述包塑部 25嵌设有或一体成型有用 于支撑所述转轴 72的前盖 3和后盖 23。 前盖 3和后盖 23可以为 BB盖。 前盖 3和后 盖 23可以在定子总成 2进行 BMC塑封吋一起注塑， 也可以在注塑完成后通过压 入的方式压嵌固定于定子总成 2上， 前盖 3和后盖 23的装配工艺的精确度较高， 对电机的噪音和振动有很大改善， 可以有效改善用户体验效果。 定子总成 2直接 采用 BMC材料进行包塑形成包塑部 25, 定子无需装配端盖， 且制造工艺简单， 材料成本和生产成本 ί氐， 而且， 定子总成 2采用包塑部 25进行整体包塑， 在包塑 后形成的定子总成 2, BMC材料将定子半成品 1全部包裹， 只有定子铁芯 12的内 腔 121有部分外露， 其防水效果佳， 避免引起漏电或短路等不良， 可靠性佳。
[0034] 具体地， 所述前盖 3压嵌于所述包塑部 25或于注塑所述包塑部 25吋放置于注塑 模具中定位； 所述后盖 23压嵌于所述包塑部 25或于注塑所述包塑部 25吋放置于 注塑模具中定位， 前盖 3、 后盖 23的定位精度高， 电机的震动、 噪音小。 [0035] 具体地， 所述绕组 11连接有电源线 13, 所述电源线 13与所述绕组 11相接的一端 由所述包塑部 25包覆， 其防水效果佳。 具体应用中， 定子铁芯 12在绕制绕组 11 (漆包线)后进行电源线 13的焊接， 加工后的即为定子半成品 1。 定子半成品 1制 作过程相对于传统的感应电机具有简单高效、 自动化水平较高等优点， 对于生 产成本的降氐起了重要的作用。 定子半成品 1在制作完成后直接进行 BMC注塑 以形成包塑部 25, 注塑后的物料即为定子总成 2, 定子半成品 1无需通过传统的 浸漆工艺， 通过 BMC包塑的方式简单、 高效， 无需较长吋间的周转， 制造的总 体成本实现大幅降 ί氐。
[0036] 具体地， 所述包塑部 25具有用于容放所述前盖 3的第一容槽 2501 , 所述前盖 3可 以过盈压嵌于所述第一容槽 2501内， 前盖 3的定位精度高， 电机运行过程平稳、 安静。 所述前盖 3内设置有第一轴承 61 , 所述转轴 72的一端穿设于所述第一轴承 61。 或者， 所述前盖 3可以于注塑所述包塑部 25吋放置于注塑模具中定位， 即前 盖 3可以通过镶嵌注塑的方式直接嵌于包塑部 25内。
[0037] 具体地， 所述包塑部 25具有用于容放所述后盖 23的第二容槽 2502, 所述后盖 23 的外侧壁与所述第二容槽 2502的侧壁相接， 所述后盖 23的端部与所述第二容槽 2 502的底部相接， 所述后盖 23的外侧还一体成型有卡嵌于所述第二容槽 2502侧壁 的凸缘 2301 , 后盖 23的定位精度高， 电机运行过程平稳、 安静。 所述后盖 23内 设置有第二轴承 62, 所述转轴 72的另一端穿设于所述第二轴承 62。 所述后盖 23 可以压嵌于所述包塑部 25, 或者， 所述后盖 23可以于注塑所述包塑部 25吋放置 于注塑模具中定位， 即后盖 23可以通过镶嵌注塑的方式直接嵌于包塑部 25内。
[0038] 具体应用中， 后盖 23和前盖 3形成支撑结构并将转子总成 7支撑起来， 从而实现 电机顺利的旋转。 后盖 23可以通过定子半成品 1在进行 BMC塑封吋放置在模具中 一起包塑， 后盖 23的端面 231和端面 232与包塑部 25的端面 222和端面 223形成挡 合面， 可以防止后盖 23轴向产生位移， 后盖 23的端面 233和包塑部 25的端面 221 也同样形成挡合面， 承受后盖 23及轴承 62产生的轴向力。 后盖 23的端面 234和包 塑部 25的端面 224形成径向的挡合面， 可以防止后盖 23产生径向位移。 前盖 3的 侧面 31与包塑部 25的侧壁 24在过盈配合的情况下压入包塑部 25内， 实现前盖 3的 轴向和径向的固定。 转子总成 7的前后轴承 （第一轴承 61、 第二轴承 62) 通过前 盖 3和后盖 23的支撑， 从而节省了传统感应电机所必须的前后端盖， 极大的节约 了电机的材料成本， 且装配工艺和工序也较传统感应电机简单， 质量控制水平 得到提升。
[0039] 具体地， 所述转子总成 7连接有通风风叶 71 , 所述定子总成 2具有容纳所述通风 风叶 71的内腔 20, 所述包塑部 25设置有与所述内腔 20相通的通风孔 26, 通风孔 2 6可设置有多个， 形成主动散热式散热系统， 有利于绕组 11和包塑部 25中 BMC材 料的散热， 散热效果佳， 有利于提高电机的可靠性及延长电机的使用寿命。 通 风风叶 71可为鼠笼式风叶等。
[0040] 本发明所提供的电机， 其前盖 3和后盖 23的装配精度高， 电机的噪音和振动小
, 可以有效改善用户体验效果。 定子总成 2直接采用 BMC材料进行包塑形成包塑 部 25, 定子无需装配端盖， 且制造工艺简单， 材料成本和生产成本 ί氐， 而且， 定子总成 2采用包塑部 25进行整体包塑， 其防水效果佳， 避免引起漏电或短路等 不良， 可靠性佳。
[0041] 如图 1〜图 11所示， 本发明实施例还提供了一种洗涤泵 120, 所述洗涤泵 120包 括下泵壳 41 , 所述洗涤泵 120还包括上述的电机， 所述电机连接于所述下泵壳 41
[0042] 具体地， 所述下泵壳 41具有凸柱 411 , 所述电机的定子总成 2具有用于供所述凸 柱 411插入的定位孔 27; 凸柱 411和定位孔 27可以设置有至少两个， 本实施例中 , 凸柱 411和定位孔 27设置有四个。 或者， 所述电机的定子总成 2具有凸柱 411 , 所述下泵壳 41具有用于供所述凸柱 411插入的定位孔 27。 凸柱 411和定位孔 27用 于装配定位用， 防止在装配吋下泵壳 41旋转， 可靠性佳。
[0043] 具体地， 所述下泵壳 41的侧面设置有电容安装脚 412, 所述电容安装脚 412包括 与电容相接触的电容接触壁 4123和连接于所述电容接触壁 4123与所述下泵壳 41 侧壁之间的连接筋 4122、 4124； 或者， 所述电容安装脚 412与所述包塑部 25—体 注塑成型。
[0044] 具体地， 所述电容接触壁 4123呈弧形， 所述连接筋设置有两条， 所述电容接触 壁 4123和两条所述连接筋 4122、 4124、 下泵壳 41的侧面形成闭合环形结构。 本 实施例中， 下泵壳 41的侧面为电容安装脚 412, 该电容安装脚 412的电容接触壁 4 123与下泵壳 41的侧壁 413相连接， 在电容接触壁 4123的外侧形成有半弧形的电 容接触壁 4123, 半弧形的电容接触壁 4123通过连接筋 4122和连接筋 4124形成闭 合的加强筋结构。 半弧形的电容接触壁 4123通过位于连接筋 4122、 4124之间的 连接结构 414与下泵壳 41的侧壁 415相连接。 通过上述的设计， 电容安装脚 412的 结构牢固， 避免出现电容安装脚 412在使用或装配过程的断裂不良的现象， 可靠 性佳。
[0045] 如图 1〜图 12所示， 本发明实施例还提供了一种洗碗机， 所述洗碗机包括洗碗 机本体 900, 所述洗碗机本体 900连接有上述的洗涤泵 120。 洗涤泵 120中电机的 定子总成 2直接采用 BMC材料进行包塑形成包塑部 25, 定子无需装配端盖， 且制 造工艺简单， 材料成本和生产成本 ί氐， 而且， 定子总成 2采用包塑部 25进行整体 包塑， 其防水效果佳， 避免引起漏电或短路等不良， 可靠性佳。
[0046] 具体地， 所述洗涤泵 120连接有泵总成 4, 所述泵总成 4具有进水口 423和第一出 水口 421、 第二出水口 322; 所述进水口 423通过进水管 140连接于所述洗碗机本 体 900, 所述第一出水口 421、 第二出水口 322通过出水管 130连接于所述洗碗机 本体 900。
[0047] 具体地， 所述洗碗机本体 900内设置有底盘 150, 所述底盘 150设置有安装孔位 1 51 , 所述洗涤泵 120中电机定子的包塑部 25—体成型有后凸台 22, 所述后凸台 22 插入于所述安装孔位 151 , 后凸台 22连接有后套 160。 所述后凸台 22的侧面设置 有至少两条加强筋 21。 具体应用中， 洗碗机本体 900与洗涤泵 120的连接通过进 水管 140 (胶管） 与泵总成 4的进水口 423连接、 出水管 130 (胶管） 与泵总成 4的 第一出水口 421、 第二出水口 322连接， 后套 160与后凸台 22连接， 这三个连接又 分别与底盘 150进行连接。 其中后凸台 22通过三根加强筋 21支撑。 通过上述连接 方式， 电机的振动小， 可以有效的降 ί氐整机的噪音和振动。
[0048] 本发明实施例还提供了一种电机的制造方法， 可用于制造上述电机， 包括以 下步骤： 制备定子铁芯 12和转子总成 7, 于所述定子铁芯 12上绕设绕组 11 , 将电 源线 13连接于所述绕组 11形成定子半成品 1 , 将所述定子半成品 1放入注塑模具 中注塑成型包覆于所述绕组 11和所述定子铁芯 12外侧的包塑部 25, 于所述包塑 部 25压嵌用于支撑所述转子总成 7的前盖 3或 /和后盖 23或于注塑所述包塑部 25吋 将用于支撑所述转子总成 7的前盖 3或 /和后盖 23放置于注塑模具中通过注塑定位 , 得到定子总成 2, 将所述转子总成 7转动连接于所述定子总成 2内。 即前盖 3、 后盖 23可以压嵌于包塑部 25, 也可以于注塑包塑部 25吋， 将前盖 3、 后盖 23放入 模具中通过注塑包覆定位， 定位精度高， 电机运行过程平稳、 安静。 定子铁芯 1 2在绕制绕组 11 (漆包线)后进行电源线 13的焊接得到定子半成品 1 , 再将定子半 成品 1放入注塑模具中注塑成型包覆于所述绕组 11和所述定子铁芯 12外侧的包塑 部 25。
[0049] 本发明实施例所提供的电机、 洗涤泵 120、 洗碗机和电机的制造方法， 其前盖 3 和后盖 23可以在定子总成 2进行 BMC塑封吋一起注塑定位， 也可以在注塑完成 后通过压入的方式压嵌固定于定子总成 2, 前盖 3和后盖 23的装配工艺的精确度 较高， 对电机的噪音和振动有很大改善， 可以有效改善用户体验效果。 定子总 成 2直接进行包塑形成包塑部 25, 定子无需装配端盖， 且制造工艺简单， 材料成 本和生产成本 ί氐， 而且， 定子总成 2采用包塑部 25进行整体包塑， 电机防水效果 佳， 避免引起漏电或短路等不良， 可靠性佳。
[0050] 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明 的精神和原则之内所作的任 1可修改、 等同替换或改进等， 均应包含在本发明的 保护范围之内。

Claims

权利要求书
[权利要求 1] 一种电机， 包括定子总成和转动设置于所述定子总成内的转子总成， 所述转子总成包括转轴， 所述定子总成包括定子铁芯和绕设于所述定 子铁芯的绕组， 其特征在于， 所述定子总成还包括包覆于所述绕组和 所述定子铁芯外侧的包塑部， 所述包塑部嵌设有或一体成型有用于支 撑所述转轴的前盖和后盖。
[权利要求 2] 如权利要求 1所述的电机， 其特征在于， 所述前盖压嵌于所述包塑部 或于注塑所述包塑部吋放置于注塑模具中定位； 所述后盖压嵌于所述 包塑部或于注塑所述包塑部吋放置于注塑模具中定位。
[权利要求 3] 如权利要求 1所述的电机， 其特征在于， 所述绕组连接有电源线， 所 述电源线与所述绕组相接的一端由所述包塑部包覆。
[权利要求 4] 如权利要求 1所述的电机， 其特征在于， 所述包塑部具有用于容放所 述前盖的第一容槽， 所述前盖过盈压嵌于所述第一容槽内， 所述前盖 内设置有第一轴承， 所述转轴穿设于所述第一轴承。
[权利要求 5] 如权利要求 1至 4中任一项所述的电机， 其特征在于， 所述包塑部具有 用于容放所述后盖的第二容槽， 所述后盖的外侧壁与所述第二容槽的 侧壁相接， 所述后盖的端部与所述第二容槽的底部相接， 所述后盖的 外侧还一体成型有卡嵌于所述第二容槽侧壁的凸缘， 所述后盖内设置 有第二轴承， 所述转轴穿设于所述第二轴承。
[权利要求 6] 如权利要求 1至 4中任一项所述的电机， 其特征在于， 所述转子总成连 接有通风风叶， 所述定子总成具有容纳所述通风风叶的内腔， 所述包 塑部设置有与所述内腔相通的通风孔。
[权利要求 7] —种洗涤泵， 所述洗涤泵包括下泵壳， 其特征在于， 所述洗涤泵还包 括如权利要求 1至 6中任一项所述的电机， 所述电机连接于所述下泵壳
[权利要求 8] 如权利要求 7所述的洗涤泵， 其特征在于， 所述下泵壳具有凸柱， 所 述电机的定子总成具有用于供所述凸柱插入的定位孔； 或者， 所述电 机的定子总成具有凸柱， 所述下泵壳具有用于供所述凸柱插入的定位 孔。
[权利要求 9] 如权利要求 7所述的洗涤泵， 其特征在于， 所述下泵壳的侧面设置有 电容安装脚， 所述电容安装脚包括与电容相接触的电容接触壁和连接 于所述电容接触壁与所述下泵壳侧壁之间的连接筋； 或者， 所述电容 安装脚与所述包塑部一体注塑成型。
[权利要求 10] 如权利要求 9所述的洗涤泵， 其特征在于， 所述电容接触壁呈弧形， 所述连接筋设置有两条， 所述电容接触壁和两条所述连接筋、 下泵壳 的侧面形成闭合环形结构。
[权利要求 11] 一种洗碗机， 所述洗碗机包括洗碗机本体， 其特征在于， 所述洗碗机 本体连接有如权利要求 7至 10中任一项所述的洗涤泵。
[权利要求 12] 一种电机的制造方法， 其特征在于， 包括以下步骤： 制备定子铁芯和 转子总成， 于所述定子铁芯上绕设绕线， 将电源线连接于所述绕线形 成定子半成品， 将所述定子半成品放入注塑模具中注塑成型包覆于所 述绕线和所述定子铁芯外侧的包塑部， 于所述包塑部压嵌用于支撑所 述转子总成的前盖或 /和后盖或于注塑所述包塑部吋将用于支撑所述 转子总成的前盖或 /和后盖放置于注塑模具中通过注塑定位， 得到定 子总成， 将所述转子总成转动连接于所述定子总成内。
PCT/CN2015/082636 2015-06-29 2015-06-29 电机、洗涤泵、洗碗机和电机的制造方法 WO2017000113A1 (zh)

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