Plastic shell motor and manufacturing method thereof

Abstract

The invention discloses a plastic shell motor and a manufacturing method thereof, the plastic shell motor comprises a first shell, a second shell, a stator assembly, a rotor, a motor shaft and a bearing, and the first shell and the second shell are both made of a plastic material; the bottom of an inner cavity of the first shell is provided with a stator supporting table used for supporting the lower end face of the stator iron core, and the inner wall of the first shell is in close fit with the peripheral wall of the stator iron core. The lower end of the second shell is inserted into the inner cavity of the first shell and is tightly pressed on the upper end surface of the stator core, and the outer wall of the lower end of the second shell is tightly matched with the inner wall of the upper end of the first shell; a first groove communicated with the stator supporting table is formed in the inner wall of the first shell in the vertical direction; a second groove is formed in the outer wall of the second shell in the vertical direction, and a notch communicated with the second groove is formed in the side wall, tightly pressing the stator iron core, of the lower end of the second shell. According to the plastic shell motor and the manufacturing method thereof, the manufacturing process is simple, the concentricity is high, and the universality is good.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more particularly to a plastic housing motor and a manufacturing method thereof. Background Art

[0002] At present, there are two main types of motors on the market: one is a metal shell motor, which is expensive and not waterproof, and the other is a plastic-encapsulated motor, which is a motor that puts the stator into a ready-made injection mold and is molded by injection molding. It is low-cost and has good waterproof properties. However, because the stator is in the high-pressure and high-temperature environment of the plastic-encapsulated injection molding machine, it is easy to cause deformation and damage to the stator enameled wire, resulting in a low product qualification rate, poor consistency, and complex processes and high costs. At the same time, the stator is completely encapsulated in plastic, and there is no way to effectively dissipate heat, which causes the motor to heat up during operation, affecting the service life of the motor. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a plastic housing motor and a manufacturing method thereof, which has a simple manufacturing process, high concentricity and good versatility.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a plastic shell motor, comprising a first shell, a second shell, a stator assembly, a rotor, a motor shaft and a bearing, wherein the first shell and the second shell are respectively provided with a bearing chamber for installing the bearing, the motor shaft is inserted into the shaft hole of the rotor, and both ends are installed in the bearing chamber through bearings, the rotor is arranged at the center of the stator assembly, the stator assembly comprises a stator core and a stator winding, and the first shell and the second shell are both made of plastic; a stator support for supporting the lower end surface of the stator core is provided at the bottom of the inner cavity of the first shell, and the inner wall of the first shell is tightly matched with the outer peripheral wall of the stator core; the lower end of the second shell is inserted into the inner cavity of the first shell and pressed against the upper end surface of the stator core, and the lower end outer wall of the second shell is tightly matched with the upper end inner wall of the first shell; a first groove connected to the stator support is provided on the inner wall of the first shell in the vertical direction; a second groove is provided on the outer wall of the second shell in the vertical direction, and a notch connected to the second groove is provided on the side wall of the lower end of the second shell pressing the stator core.

[0005] The above technical solution provides a plastic shell motor, and the stator assembly can be fixedly installed in the inner cavity of the first shell by supporting the stator support provided on the first shell and pressing down the lower end of the second shell, and the manufacturing process is simple and the production efficiency is high; at the same time, the inner wall of the first shell is tightly matched with the outer peripheral wall of the stator core, which can prevent the stator assembly from lateral shaking, so that the concentricity of the various components of the motor is higher; in addition, the stator core is pressed by the lower end of the second shell to achieve the fixation of the stator assembly, and the thickness of the stator core is not limited, which is convenient for using stator cores of different thicknesses in the motor, and has better versatility.

[0006] In a preferred technical solution, a plurality of first grooves are uniformly arranged on the inner wall of the first housing along the circumferential direction, and a plurality of second grooves are uniformly arranged on the outer wall of the lower end of the second housing along the circumferential direction; the first grooves and the second grooves are staggered, and adjacent first grooves and second grooves are not on the same plane. In this technology, the heat dissipation effect of the motor housing is further improved by uniformly arranging a plurality of first grooves and a plurality of second grooves.

[0007] In a preferred technical solution, fan blades are also provided on the motor shaft to achieve better heat dissipation effect.

[0008] In a preferred technical solution, a full or partial tight fit relationship is formed between the inner wall of the first shell and the outer peripheral wall of the stator core, so that the stator core is not easy to loosen, thereby ensuring the concentricity of the stator assembly and the first shell.

[0009] In a preferred technical solution, a full or partial tight fit is formed between the lower outer wall of the second shell and the upper inner wall of the first shell, so that the second shell is assembled more firmly and the fitting accuracy is high, which can ensure the concentricity of the second shell and the first shell.

[0010] In a preferred technical solution, the first shell and the second shell are respectively provided with mounting ears, and the first shell is connected to the second shell through the mounting ears. In this technology, the first shell and the second shell are mechanically connected together through the mounting ears, and the assembly is more secure.

[0011] In a preferred technical solution, the first shell and the second shell are fixedly connected by glue, and the glue connection is easy to operate and has low manufacturing cost.

[0012] In a preferred technical solution, a flange structure is provided on the first shell and / or the second shell, and the flange structure and the first shell and / or the second shell are an integrally formed structure. This technology uses integral molding to combine the flange and the motor shell into one, achieving multiple uses of one shell, wherein the shape of the flange can be either a windshield of a fan or a shell of a water pump as required.

[0013] In a preferred technical solution, the bearing chamber is made of metal or plastic; wherein the metal bearing chamber is more durable and is conducive to the installation of bearings, while the plastic bearing chamber can be integrally formed with the first shell and the second shell, which is more convenient to manufacture.

[0014] The first shell and the second shell are both made of BMC material, which has good insulation, stable structure, low cost and is suitable for mass production.

[0015] In another technical solution, a method for manufacturing a plastic housing motor is provided, which is used to manufacture a plastic housing motor in the above technical solution, and the manufacturing method comprises:

[0016] Align the stator assembly with the tight-fitting position of the inner cavity of the first housing, and use a hydraulic tool to press the stator assembly into the inner cavity of the first housing until the lower end surface of the stator core contacts the stator support of the first housing;

[0017] The rotor is placed into the center hole of the stator assembly, and the motor shaft and bearings are assembled on the rotor;

[0018] Using a hydraulic tool, press the second housing into the inner cavity of the first housing until the lower end of the second housing presses against the upper end surface of the stator core;

[0019] The first shell and the second shell are fixedly connected together by bolt structure or glue.

[0020] The above technical solution provides a method for manufacturing a plastic shell motor, which includes first pressing the stator assembly into the cavity of the first shell, then placing the rotor, and then pressing the second shell into the cavity of the first shell until its lower end presses the stator assembly, and finally fixing the first shell and the second shell together. The above manufacturing method has simple procedures and high production efficiency, which can improve the product qualification rate and consistency, thereby effectively reducing production costs.

[0021] It can be known from the above technical scheme that, compared with the prior art, the beneficial effects of the present invention are: a plastic shell motor, through the upward support of the stator support set on the first shell and the downward pressure of the lower end of the second shell, the stator assembly can be fixedly installed in the inner cavity of the first shell, the manufacturing process is simple and the production efficiency is high; at the same time, the inner wall of the first shell is tightly matched with the outer peripheral wall of the stator core, which can prevent the stator assembly from lateral shaking, so that the concentricity of the various components of the motor is higher; in addition, the stator core is pressed by the lower end of the second shell to achieve the fixation of the stator assembly, and the thickness of the stator core is not limited, which is convenient for using stator cores of different thicknesses in the motor, and has better versatility; a manufacturing method of a plastic shell motor has simple procedures and high production efficiency, which can improve the qualified rate and consistency of products, thereby effectively reducing production costs.

[0022] In addition, other advantages of the present invention will be given in the following description, and some will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A cross-sectional schematic diagram of a plastic housing motor in one embodiment of the present invention;

[0025] Figure 2 An exploded view of a plastic housing motor in one embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of a first shell in one embodiment of the present invention;

[0027] Figure 4 A three-dimensional diagram of a plastic housing motor in one embodiment of the present invention;

[0028] Figure 5 A cross-sectional schematic diagram of a plastic housing motor in another embodiment of the present invention;

[0029] Figure 6 An exploded view of a plastic housing motor in another embodiment of the present invention;

[0030] Figure 7 It is a structural schematic diagram of a first shell in another embodiment of the present invention;

[0031] Figure 8 A three-dimensional diagram of a plastic housing motor in another embodiment of the present invention;

[0032] Explanation of the accompanying drawings: 1. first shell; 2. second shell; 3. stator assembly; 4. rotor; 5. motor shaft; 6. bearing; 7. bearing chamber; 8. stator support; 9. flange structure; 10. mounting ear; 31. stator core; 32. stator winding; 61. first bearing; 62. second bearing; 71. first bearing chamber; 72. second bearing chamber; 101. first groove; 201. second groove; 202. notch. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] Reference Figure 1-8 A plastic housing motor and a manufacturing method thereof according to an embodiment of the present invention are described.

[0036] In one embodiment, if Figure 1-4 As shown, a plastic housing motor includes a first housing 1, a second housing 2, a stator assembly 3, a rotor 4, a motor shaft 5 and a bearing 6. The first housing 1 and the second housing 2 are respectively provided with a bearing chamber 7 for installing the bearing 6. The motor shaft 5 is passed through the shaft hole of the rotor 4, and both ends are installed in the bearing chamber 7 through the bearing 6. The rotor 4 is arranged at the center of the stator assembly 3, and the stator assembly 3 includes a stator core 31 and a stator winding 32.

[0037] The first shell 1 and the second shell 2 are both made of plastic; a stator support 8 for supporting the lower end surface of the stator core 31 is provided at the bottom of the inner cavity of the first shell 1, and the inner wall of the first shell 1 is tightly matched with the outer peripheral wall of the stator core 31; the lower end of the second shell 2 is inserted into the inner cavity of the first shell 1 and pressed against the upper end surface of the stator core 31, and the lower end outer wall of the second shell 2 is tightly matched with the upper end inner wall of the first shell 1.

[0038] A first groove 101 communicating with the stator support 8 is vertically provided on the inner wall of the first shell 1 ; a second groove 201 is vertically provided on the outer wall of the second shell 2 , and a notch 202 communicating with the second groove 201 is provided on the side wall of the lower end of the second shell 2 pressing the stator core 31 .

[0039] Among them, the shell of the above-mentioned motor is composed of a first shell 1 and a second shell 2, and the first shell 1 and the second shell 2 are fixedly connected together; a first bearing chamber 71 is provided at the center of the first shell 1, and a second bearing chamber 72 is provided at the center of the second shell 2; the center line of the first bearing chamber 71 coincides with the center line of the inner cavity of the first shell 1, and the center line of the second bearing chamber 72 coincides with the center line of the inner cavity of the second shell 2, and the center line of the first bearing chamber 71 is coaxial with the center line of the second bearing chamber 72; a first bearing 61 and a second bearing 62 are respectively provided in the first bearing chamber 71 and the second bearing chamber 72, and the first bearing 61 and the second bearing 62 are respectively sleeved on both ends of the motor shaft 5, so that the motor shaft 5 can be rotatably arranged between the first shell 1 and the second shell 2, thereby ensuring the coaxiality of the stator assembly 3, the rotor 4 and the motor shaft 5.

[0040] The stator core 31 is formed by stacking a large number of silicon steel sheets by pressure and adhesive, and the stator winding 32 is wound on the stator core 31; the first shell 1 can be a cylindrical shell with an open upper end, and its inner cavity constitutes an installation cavity for installing the stator assembly 3. The inner diameter of the stator support 8 is smaller than the outer diameter of the stator core 31, so as to support the lower end surface of the stator core 31 and prevent the stator core 31 from moving downward; at the same time, since the inner wall of the first shell 1 is tightly matched with the outer wall of the stator core 31, it can prevent the stator core 31 from moving left and right, ensuring that the center line of the stator assembly 3 is aligned with the first on the first shell 1. The center line of the bearing chamber 71 is coaxial to obtain better coaxiality; the inner diameter of the lower end of the second shell 2 is smaller than the outer diameter of the stator core 31, and the height of the second shell 2 is greater than or equal to the distance from the upper end surface of the stator core 31 to the top end surface of the first shell 1, so as to ensure that after the second shell 2 is inserted into the inner cavity of the first shell 1, its lower end can press the upper end surface of the stator core 31, thereby preventing the stator assembly 3 from moving upward; at the same time, the outer wall of the lower end of the second shell 2 and the inner wall of the upper end of the first shell 1 form a tight-fitting structure, which can play a guiding role and facilitate the second shell 2 to be pressed into the inner cavity of the first shell 1.

[0041] At the same time, since the structure of the motor is to fix the stator assembly 3 by pressing the silicon steel sheets of the stator core 31 at the lower end of the second housing 2, there is no limit on the thickness of the stator core 31, so the stator core 31 can be of different thicknesses, and the versatility is better. In specific implementation, if there are other types of motors, and the stator core 31 needs to increase the silicon steel sheets, the second housing 2 can be used with different motors while ensuring that the second housing 2 extends into the inner cavity of the first housing 1 to a certain depth, can press the upper end surface of the stator core 31, and ensures that the various components of the motor are coaxial, so as to achieve one mold for multiple uses.

[0042] Furthermore, a groove extending downward from the top edge is provided on the inner wall of the first shell 1, and a groove is also provided on the top of the stator support 8. The two grooves are connected to form a first groove 101. The upper end opening of the first groove 101 is located at the top edge of the first shell 1, and the lower end opening is located on the side of the stator support 8 and contacts the lower end surface of the stator core 31, so that a cold air channel can be formed on the outside of the stator assembly 3, and the cold air channel leads to the bottom surface of the stator core 31; the upper end opening of the second groove 201 is located at the top edge of the second shell 2, and the lower end opening is connected to the notch 202 and contacts the upper end surface of the stator core 31. The above-mentioned second groove 201 and the notch 202 are connected to each other to form a hot air channel.

[0043] During specific implementation, the number of the first groove 101 and the second groove 201 is not limited and can be one or more; a sealed cavity is formed between the inner wall of the second shell 2 and the upper end surface of the stator core 31, which encloses the main heat source of the motor - the enameled wire in the stator winding 32. After the enameled wire is heated, the air density in the sealed cavity becomes smaller, forming a negative pressure, and cold air is sucked in through the cold air channel formed by the first groove 101. At the same time, the hot air generated when the motor is working is discharged through the hot air channel formed by the second groove 201 and the notch 202, forming air convection inside the motor to form a heat dissipation duct structure.

[0044] The above embodiment provides a plastic shell motor, in which the stator assembly 3 can be fixedly installed in the inner cavity of the first shell 1 by supporting the stator support 8 provided on the first shell 1 and pressing down the lower end of the second shell 2, and the manufacturing process is simple and the production efficiency is high; at the same time, the inner wall of the first shell 1 is tightly matched with the outer peripheral wall of the stator core 31, which can prevent the stator assembly 3 from lateral shaking, so that the concentricity of the various components of the motor is higher; in addition, the stator core 31 is pressed by the lower end of the second shell 2 to fix the stator assembly 3, and the thickness of the stator core 31 is not limited, which is convenient for using stator cores 31 of different thicknesses in the motor, and has better versatility.

[0045] In this embodiment, a plurality of first grooves 101 are evenly arranged on the inner wall of the first shell 1 along the circumferential direction, and a plurality of second grooves 201 are evenly arranged on the lower end outer wall of the second shell 2 along the circumferential direction; the first grooves 101 and the second grooves 201 are staggered, and adjacent first grooves 101 and second grooves 201 are not on the same plane.

[0046] In specific implementation, in order to ensure the heat dissipation effect and the force balance of the motor, the first groove 101 and the second groove 201 can be two or more, and multiple first grooves 101 can be evenly distributed on the inner wall of the first shell 1 along the circumferential direction, and multiple second grooves 201 can be evenly distributed on the outer wall of the second shell 2 along the circumferential direction.

[0047] In this embodiment, fan blades are also provided on the motor shaft 5. In specific implementation, the fan blades can be provided on the upper side or the lower side of the rotor 4, so that the negative pressure in the air duct is stronger, which helps to improve the heat dissipation effect.

[0048] In this embodiment, a full or partial tight fit relationship is formed between the inner wall of the first housing 1 and the outer circumferential wall of the stator core 31. In specific implementation, the inner wall of the first housing 1 and the outer circumferential wall of the stator core 31 are pressed against each other to form a full or partial tight fit, so that the stator core 31 is not easy to loosen, and the fit accuracy is high, which can ensure the coaxiality of the stator assembly 3 and the first housing 1.

[0049] In this embodiment, a full tight fit or a partial tight fit is formed between the lower end outer wall of the second shell 2 and the upper end inner wall of the first shell 1 .

[0050] In specific implementation, the lower outer wall of the second shell 2 and the upper inner wall of the first shell 1 are squeezed against each other to form a full or partial tight fit, so that the second shell 2 is assembled more firmly and the fit is high in precision, which can ensure the coaxiality of the second shell 2 and the first shell 1.

[0051] In this embodiment, mounting ears 10 are respectively provided on the first shell 1 and the second shell 2 , and the first shell 1 is connected to the second shell 2 via the mounting ears 10 .

[0052] The mounting ears 10 are respectively arranged at the edges of the first shell 1 and the second shell 2, and the mounting ears 10 of the two can be fixedly connected by screws and threaded rods, so that the first shell 1 and the second shell 2 are fixedly connected together to form the outer shell of the motor.

[0053] In this embodiment, the first shell 1 and the second shell 2 are fixedly connected by glue, and the glue connection is easy to operate and has low manufacturing cost.

[0054] In another embodiment, if Figure 5-8 As shown, a flange structure 9 is provided on the first shell 1 and / or the second shell 2 , and the flange structure 9 and the first shell 1 and / or the second shell 2 are an integrally formed structure.

[0055] Among them, the flange structure 9 is arranged on the first shell 1; in specific implementation, the flange structure 9 can also be arranged on the second shell 2, or the flange structure 9 can be arranged on both the first shell 1 and the second shell 2, and the first shell 1, the second shell 2 and the flange structure 9 arranged thereon are an integrally molded structure, which can be integrally molded by injection molding.

[0056] In the above-mentioned embodiments, the bearing chamber 7 is made of metal or plastic; the first housing 1 and the second housing 2 are both made of BMC.

[0057] The bearing chamber 7 includes a first bearing chamber 71 disposed at the center of the first shell 1 and a second bearing chamber 72 disposed at the center of the second shell 2. The first bearing chamber 71 and the second bearing chamber 72 are both made of metal or plastic. In specific implementation, the bearing chamber 7 made of metal is more durable and is conducive to the installation of bearings, while the bearing chamber 7 made of plastic can be integrally formed with the first shell 1 and the second shell 2, which is more convenient to manufacture. BMC (Bulk Molding Compound) refers to bulk molding compound, which is a material used to manufacture glass fiber reinforced thermosetting products. It has excellent electrical properties, mechanical properties, heat resistance and chemical corrosion resistance. It is used to manufacture the first shell 1 and the second shell 2. It has good insulation, stable structure, low cost and is suitable for mass production.

[0058] In yet another embodiment, a method for manufacturing a plastic housing motor is provided for manufacturing a plastic housing motor in each of the above embodiments. The method comprises:

[0059] Step a: Align the stator assembly 3 with the tight-fitting position of the inner cavity of the first shell 1 , and use a hydraulic tool to press the stator assembly 3 into the inner cavity of the first shell 1 until the lower end surface of the stator core 31 contacts the stator support 8 of the first shell 1 .

[0060] Step b: Put the rotor 4 into the central hole of the stator assembly 3, and assemble the motor shaft 5 and the bearing 6 on the rotor 4. The bearing 6 includes a first bearing 61 and a second bearing 62 which are respectively sleeved on both ends of the motor shaft 5.

[0061] Step c: Use a hydraulic tool to press the second housing 2 into the inner cavity of the first housing 1 until the lower end of the second housing 2 presses against the upper end surface of the stator core 31 .

[0062] Step d: The first shell 1 and the second shell 2 are fixedly connected together by means of a bolt structure or glue.

[0063] The above-mentioned embodiment provides a method for manufacturing a plastic housing motor, which has simple procedures and high production efficiency, and can improve the qualification rate and consistency of products, thereby effectively reducing production costs.

[0064] Other structures and operations of a plastic housing motor and a manufacturing method thereof according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the description of this specification, the reference terms "embodiment", "specific embodiment", "example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0067] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined with each other in any one or more embodiments or examples in a suitable manner without interference or contradiction.

[0068] Materials or features may be combined with each other in any suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims

1. A plastic housing motor, comprising a first housing (1), a second housing (2), a stator assembly (3), a rotor (4), a motor shaft (5) and a bearing (6), wherein the first housing (1) and the second housing (2) are respectively provided with a bearing chamber (7) for mounting the bearing (6), the motor shaft (5) is passed through an axial hole of the rotor (4), and both ends are mounted in the bearing chamber (7) through the bearing (6), the rotor (4) is arranged at the center of the stator assembly (3), and the stator assembly (3) comprises a stator core (31) and a stator winding (32), characterized in that: The first shell (1) and the second shell (2) are both made of plastic; a stator support (8) for supporting the lower end surface of the stator core (31) is provided at the bottom of the inner cavity of the first shell (1); the inner wall of the first shell (1) is tightly matched with the outer peripheral wall of the stator core (31); the lower end of the second shell (2) is inserted into the inner cavity of the first shell (1) and pressed against the upper end surface of the stator core (31), and the lower end outer wall of the second shell (2) is tightly matched with the upper end inner wall of the first shell (1); A first groove (101) communicating with the stator support (8) is provided on the inner wall of the first shell (1) in the vertical direction; a second groove (201) is provided on the outer wall of the second shell (2) in the vertical direction, and a notch (202) communicating with the second groove (201) is provided on the side wall of the lower end of the second shell (2) pressing against the stator core (31).

2. The plastic housing motor according to claim 1, characterized in that: A plurality of the first grooves (101) are evenly arranged on the inner wall of the first shell (1) along the circumferential direction, and a plurality of the second grooves (201) are evenly arranged on the outer wall of the lower end of the second shell (2) along the circumferential direction; The first grooves (101) and the second grooves (201) are arranged alternately, and adjacent first grooves (101) and second grooves (201) are not on the same plane.

3. The plastic housing motor according to claim 1, characterized in that: The motor shaft (5) is also provided with fan blades.

4. The plastic housing motor according to claim 1, characterized in that: A full tight fit or a partial tight fit relationship is formed between the inner wall of the first housing (1) and the outer peripheral wall of the stator core (31).

5. The plastic housing motor according to claim 4, characterized in that: A full tight fit or a partial tight fit relationship is formed between the lower end outer wall of the second shell (2) and the upper end inner wall of the first shell (1).

6. The plastic housing motor according to claim 1, characterized in that: The first shell (1) and the second shell (2) are respectively provided with mounting ears (10), and the first shell (1) is connected to the second shell (2) via the mounting ears (10).

7. The plastic housing motor according to claim 1, characterized in that: The first shell (1) and the second shell (2) are fixedly connected by glue.

8. The plastic housing motor according to any one of claims 1 to 7, characterized in that: The first shell (1) and / or the second shell (2) is provided with a flange structure (9), and the flange structure (9) and the first shell (1) and / or the second shell (2) are an integrally formed structure.

9. The plastic housing motor according to claim 8, characterized in that: The bearing chamber (7) is made of metal or plastic; the first housing (1) and the second housing (2) are both made of BMC material.

10. A method for manufacturing a plastic housing motor, characterized in that: Used to manufacture a plastic housing motor as claimed in claims 1 to 9, the manufacturing method comprising: Aligning the stator assembly (3) with the tight-fitting position of the inner cavity of the first housing (1), and using a hydraulic tool to press the stator assembly (3) into the inner cavity of the first housing (1) until the lower end surface of the stator core (31) contacts the stator support (8) of the first housing (1); The rotor (4) is placed in the central hole of the stator assembly (3), wherein the motor shaft (5) and the bearing (6) are mounted on the rotor (4); Using a hydraulic tool to press the second housing (2) into the inner cavity of the first housing (1) until the lower end of the second housing (2) is pressed against the upper end surface of the stator core (31); The first shell (1) and the second shell (2) are fixedly connected together by means of a bolt structure or glue.

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