Shell and stator integrated molding structure of high-speed motor and high-speed motor

Abstract

The utility model discloses a high-speed motor shell and stator integrated molding structure and a high-speed motor, the high-speed motor shell and stator integrated molding structure comprises a stator part, a wire protection cover, a bearing chamber insert and a plastic cement shell, a plurality of coils are arranged on the stator part along the circumferential direction, the plurality of coils are encircled to form an assembling cavity, and the assembling cavity is provided with a plurality of coils. The assembling cavity extends along the length direction of the stator component; the wire protecting cover covers the end surface of the stator component and is used for covering the coil; a via hole is formed in the wire protecting cover and is opposite to the inlet of the assembly cavity; the bearing chamber insert is arranged on one side, deviating from the stator component, of the wire protecting cover; an assembly chamber is arranged on the bearing chamber insert; the assembling chamber, the via hole and the assembling cavity are sequentially communicated, are coaxially arranged and are used for assembling a rotor of the high-speed motor; the plastic shell is integrally formed on the end face of the stator component, the outer circle face of the wire protecting cover and the outer circle face of the bearing chamber insert in an injection molding mode. And the processing flow is simplified and the product structure is optimized by utilizing an integrated forming mode, so that heat dissipation and performance improvement are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of high-speed motor technology, and in particular to an integrated structure of the housing and stator of a high-speed motor and the high-speed motor itself. Background Technology

[0002] High-speed motors possess advantages such as high transmission efficiency, low noise, and fast dynamic response, and have broad application prospects in aerospace, flywheel energy storage, and household appliances. During operation, high-speed motors generate significant heat due to their high rotor speed, typically exceeding 100,000 revolutions per minute. To address this, existing high-speed motors utilize external air ducts and blades to accelerate heat dissipation.

[0003] However, in the current process of installing the housing on the stator and rotor of the motor, it is necessary to fix them by applying glue, and the uniformity of the glue application is difficult to control; gaps need to be left during the processing of the housing assembly, so the production precision is insufficient; in order to facilitate the heat dissipation of the high-speed motor, the thickness of the housing fitted on the stator and rotor needs to be reduced as much as possible, which makes it difficult to process and assemble; moreover, as the structural design of high-speed motors is gradually becoming smaller, the difficulty of assembly operations is further increased, making it impossible to guarantee the performance and service life of the product, and affecting the final production yield.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an integrated molding structure of the housing and stator of a high-speed motor and a high-speed motor, which aims to solve the problems of existing high-speed motors having high assembly difficulty, inability to guarantee product performance, reduced service life and insufficient production yield.

[0006] The technical solution of this utility model is as follows:

[0007] A high-speed motor housing and stator are integrally molded, comprising a stator component, a wire guard cover, a bearing housing insert, and a plastic housing. Multiple coils are arranged circumferentially on the stator component, forming an assembly cavity that extends along the length of the stator component. The wire guard cover covers the end face of the stator component, concealing the coils. A through hole is formed on the wire guard cover opposite the entrance to the assembly cavity. The bearing housing insert is disposed on the side of the wire guard cover facing away from the stator component. An assembly chamber is provided on the bearing housing insert. The assembly chamber, the through hole, and the assembly cavity are sequentially connected and coaxially arranged for assembling the rotor of the high-speed motor. The plastic housing is integrally injection molded on the end face of the stator component, the outer circular surface of the wire guard cover, and the outer circular surface of the bearing housing insert.

[0008] The high-speed motor has an integrated structure for the housing and stator. The plastic housing includes an inner ring connecting part, an outer ring connecting part, and several air guide plates. The inner ring connecting part is connected to the stator component and is nested on the outer circular surface of the wire guard cover and the outer circular surface of the bearing housing insert. Several air guide plates are arranged in a ring outside the inner ring connecting part. The outer ring connecting part is sleeved on the outer side of the inner ring connecting part and connected to the air guide plates. Two adjacent air guide plates, the inner ring connecting part, and the outer ring connecting part together form an air duct.

[0009] The high-speed motor has an integrated structure where the outer surface of the inner ring connecting part is flush with the outer surface of the stator component; one end of the air guide plate is located on the outer surface of the inner ring connecting part, and the other end extends toward the stator component and contacts the outer surface of the stator component.

[0010] The high-speed motor has an integrated structure where the housing and stator are integrally formed, wherein the diameter of the through hole is less than or equal to the diameter of the radial cross-section of the assembly cavity; and the diameter of the through hole is greater than the diameter of the radial cross-section of the assembly cavity.

[0011] The high-speed motor has an integrated housing and stator structure. The stator component includes a stator core and a rubber-coated bracket. The stator core is annular in shape, with multiple winding teeth protruding from its inner surface. The rubber-coated bracket is nested within the stator core. The bracket includes an annular body conforming to the inner surface of the stator core, a winding portion connected to the annular body and enclosing the winding teeth, and an arc-shaped baffle connected to the winding portion. The winding portion is used to wind enameled wire to form the coil. The arc-shaped baffle is located on the winding portion at one end away from the annular body, and multiple arc-shaped baffles together form the assembly cavity. The annular body at least partially protrudes outside the stator core, forming a first boss. The end of the arc-shaped baffle protrudes outside the stator core, forming a second boss. The second boss and the first boss are flush and overlap the wire cover.

[0012] The high-speed motor has an integrated housing and stator structure, wherein the wire protection cover includes a main body and a bending portion. The main body is annular in shape, and the inner diameter of the main body is less than or equal to the diameter of the radial cross-section of the assembly cavity. The outer diameter of the main body is equal to the outer diameter of the annular body. The bending portion is located at the outer edge of the main body and bends toward the annular body, surrounding and fitting the outer circular surface of the first boss.

[0013] The high-speed motor has an integrated structure where the outer shell and stator are integrally formed. The outer diameter of the first boss is smaller than the outer diameter of the stator core. The stator core has a connecting end face facing the wire guard, and the first boss is formed on the connecting end face. The plastic shell is integrally injection molded on the connecting end face.

[0014] The high-speed motor has an integrated structure where the housing and stator are integrally formed, wherein the wire protection cover is a metal wire protection cover or an alloy wire protection cover; and / or, the bearing housing insert is a metal insert or an alloy insert.

[0015] The high-speed motor has an integrated structure where the housing and stator are integrally formed, wherein the outer circular surface of the bearing housing insert is provided with teeth.

[0016] This application also discloses a high-speed motor, which includes an integrated structure of the housing and stator of the high-speed motor as described above.

[0017] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0018] The high-speed motor with an integrated shell and stator structure disclosed in this utility model encapsulates both the stator and rotor components of the high-speed motor within a plastic shell. Only the rotor rotates as a whole, while the stator components, wire guards, bearing housing inserts, and plastic shell are integrated into a single unit, resulting in a stable structure and thus extending the service life.

[0019] In this invention, the plastic housing is injection molded. The stator components, cable guard, and bearing housing insert are first fixed in the mold, and then integrated by injecting plastic material, eliminating the assembly process. This improves the production efficiency of high-speed motors and reduces processing costs. Moreover, compared to traditional glue bonding, the integrated molding process results in better connection and structural stability, and eliminates the need to consider the uniformity of bonding, thus improving production yield.

[0020] In addition, in this invention, the plastic shell is in contact with the end face of the stator component, and does not surround the outer circular surface of the stator component, which is more conducive to heat dissipation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the integrated molding structure of the housing and stator of the medium- and high-speed motor of this utility model.

[0023] Figure 2 for Figure 1 Axial cross-sectional view along the AA' direction;

[0024] Figure 3 This is an exploded view of the integrated structure of the housing and stator of the medium-high speed motor of this utility model.

[0025] Figure 4 This is a schematic diagram of the stator structure in this utility model;

[0026] Figure 5 This is an exploded view of the stator structure in this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the high-speed motor of this utility model.

[0028] Among them, 10 is the stator component; 11 is the assembly cavity; 12 is the stator core; 121 is the winding tooth; 13 is the rubber-coated bracket; 131 is the annular body; 1311 is the first boss; 132 is the winding part; 133 is the arc-shaped baffle; 1331 is the second boss; 20 is the wire protection cover; 21 is the through hole; 22 is the main body; 23 is the bending part; 30 is the bearing housing insert; 31 is the assembly chamber; 32 is the tooth pattern; 40 is the plastic shell; 41 is the inner ring connection part; 42 is the air guide plate; 43 is the outer ring connection part; 50 is the rotor; and 60 is the propeller. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] See Figure 1 , Figure 2 , Figure 3 and Figure 6As shown in one embodiment of this utility model application, a high-speed motor housing and stator integrated molding structure is disclosed, which includes a stator component 10, a wire guard cover 20, a bearing housing insert 30 and a plastic housing 40. Multiple coils are arranged circumferentially on the stator component 10, and the multiple coils surround to form an assembly cavity 11, which extends along the length direction of the stator component 10. The wire cover 20 covers the end face of the stator component 10 to cover the coil; a through hole 21 is formed on the wire cover 20 opposite to the entrance of the assembly cavity 11; the bearing housing insert 30 is disposed on the side of the wire cover 20 away from the stator component 10; an assembly chamber 31 is provided on the bearing housing insert 30; the assembly chamber 31, the through hole 21 and the assembly cavity 11 are connected in sequence and coaxially arranged to assemble the rotor 50 of the high-speed motor; the plastic housing 40 is integrally injection molded on the end face of the stator component 10, the outer circular surface of the wire cover 20 and the outer circular surface of the bearing housing insert 30.

[0031] The integrated housing and stator structure of the high-speed motor disclosed in this embodiment encapsulates both the stator component 10 and the rotor 50 of the high-speed motor within the plastic housing 40. Only the rotor 50 rotates in the high-speed motor as a whole. The stator component 10, the wire guard cover 20, the bearing housing insert 30, and the plastic housing 40 are integrated into one unit, resulting in a stable structure that helps extend the service life.

[0032] Specifically, in this embodiment, multiple coils are wound on the stator component 10, and a wire cover 20 is placed on the end face of the stator component 10 to cover the coils. During the molding of the plastic housing 40, the injected high-temperature plastic material contacts and connects to the wire cover 20. However, the plastic material is blocked by the wire cover 20 and does not come into contact with the coils, thereby preventing high-temperature damage to the coils in the stator component 10, protecting the structure of the stator component 10, and ensuring that the integrally molded structure of the housing and stator can function normally, thus improving the production yield of the integral molding process.

[0033] Specifically, the stator component 10, wire guard cover 20, and bearing housing insert 30 disclosed in this embodiment can be pre-fixed by physical assembly methods such as welding and bonding, and then placed into an injection mold to form a plastic housing 40 in one injection molding process.

[0034] In another embodiment of this invention, the stator component 10, the wire guard cover 20, and the bearing housing insert 30 only need to be aligned sequentially and arranged coaxially so that the assembly chamber 31, the through hole 21, and the assembly cavity 11 extend in a straight line. Pre-fixed connection is not required. During the integrated injection molding process, the plastic shell 40 is connected to the end of the stator component 10, the outer circular surface of the wire guard cover 20, and the outer circular surface of the bearing housing insert 30, thereby connecting the various components into a whole to form a complete and structurally stable integrated shell and stator structure. This can optimize the processing flow and improve production efficiency.

[0035] Specifically, the rotor 50 of the high-speed motor generally includes a shaft and a magnetic component. One end of the shaft is located inside the assembly chamber 31, where a bearing is fitted to abut against the side wall of the assembly chamber 31 for stability. The other end of the shaft is inserted into the assembly cavity 11 through the through hole 21 and a magnetic component, such as a magnet, is nested therein. When the coil is energized, a magnetic field is generated, driving the magnetic component to rotate, thereby rotating the shaft and completing the conversion of electrical energy into mechanical energy. In this embodiment, the bearing chamber insert 30 is provided to block the plastic material during the manufacturing of the plastic housing 40, leaving an assembly chamber 31 that communicates with the through hole 21 to facilitate the assembly of the bearing and the shaft.

[0036] In this embodiment, the plastic housing 40 is integrally injection molded. The stator component 10, the cable guard 20, and the bearing housing insert 30 are first fixed in the mold, and then integrally processed by injecting plastic material, eliminating the assembly process, which helps to improve the production efficiency of high-speed motors and reduce processing costs. Moreover, compared with the traditional glue bonding process, the product integrally molded by the mold has a better connection effect, and there is no need to consider the problem of uniform bonding, thus improving the production yield.

[0037] In addition, in this embodiment, the plastic housing 40 is in contact with the end face of the stator component 10, and does not surround the outer circular surface of the stator component 10, which is more conducive to stator heat dissipation.

[0038] like Figure 2 and Figure 3 As shown in this embodiment, the bearing housing insert 30 has teeth 32 on its outer circular surface. In this embodiment, the teeth 32 increase the roughness of the outer circular surface of the bearing housing insert 30, thereby improving the connection between the plastic material and the outer circular surface of the bearing housing insert 30 during injection molding, which is beneficial for molding and improving the stability of the structure.

[0039] Specifically, the outer circular surface of the bearing housing insert 30 may be provided with annular teeth 32, and the shape of the teeth 32 may be strip-shaped, grid-shaped, matrix-shaped, etc. It should be noted that this embodiment is only an example of the shape of the teeth 32, but the protection scope of this utility model is not limited to this. Other shapes of teeth 32, as long as they can achieve the technical effect disclosed in this application, can be used as equivalent substitutions for the concept of this utility model and should also be within the protection scope of this application.

[0040] Specifically, as another embodiment of this invention, the cable protector 20 is disclosed as a metal cable protector or an alloy cable protector. Utilizing the advantages of high hardness, good support performance, and good heat resistance of metal and alloy structures, structural stability can be maintained during injection molding, supporting the plastic material and facilitating cooling and shaping.

[0041] Specifically, as another embodiment of this invention, the bearing housing insert 30 is disclosed to be a metal insert or an alloy insert. For example, the bearing housing insert 30 can be a copper metal insert or a copper-aluminum alloy insert. The bearing housing insert 30 has high hardness and high stability, which is beneficial for supporting the molding of the plastic housing 40, and at the same time supports the rotor 50 of the high-speed motor inside, making the high-speed motor structurally stable and with a long service life.

[0042] In this embodiment, the wire guard cover 20 and the bearing housing insert 30 can be made of the same material to reduce the types of manufacturing materials and lower production costs.

[0043] Specifically, the plastic housing 40 disclosed in this embodiment includes, but is not limited to, housings made of plastic materials such as polyethylene, polypropylene, polyvinyl chloride, and polycarbonate. The stator component 10 adopts a conventional stator core 12, which is made by winding enameled wire. The metal part of the stator core 12 can be connected to the plastic housing 40 using a nano-injection molding process, resulting in a good connection effect and a stable product structure.

[0044] It should be noted that this embodiment is only an example of the type of plastic shell 40, but the scope of protection of this utility model is not limited to this. Other types of plastic shells 40, as long as they can achieve the technical effects disclosed in this application, can be used as equivalent replacements for the concept of this utility model and should also be within the scope of protection of this application.

[0045] like Figure 2As shown, in another embodiment of this invention, the plastic housing 40 includes an inner ring connecting portion 41, an outer ring connecting portion 43, and a plurality of air guide plates 42. The inner ring connecting portion 41 is connected to the stator component 10 and is nested on the outer circular surface of the cable guard cover 20 and the outer circular surface of the bearing chamber insert 30. The plurality of air guide plates 42 are arranged in a ring outside the inner ring connecting portion 41. The outer ring connecting portion 43 is sleeved on the outer side of the inner ring connecting portion 41 and connected to the air guide plates 42. Two adjacent air guide plates 42, the inner ring connecting portion 41, and the outer ring connecting portion 43 together form an air duct.

[0046] The high-speed motor disclosed in this embodiment, due to its high rotational speed, can accelerate heat dissipation by setting up a heat dissipation structure, thus preventing malfunctions due to overheating during operation. For example... Figure 6 As shown, a propeller 60 can be fitted onto the rotor 50 of the high-speed motor. When the propeller 60 rotates, it blows air along the axial direction of the high-speed motor, increasing airflow on the outer wall surface of the motor and accelerating heat dissipation. Multiple air guide plates 42 are provided between the inner ring connecting part 41 and the outer ring connecting part 43 of the plastic housing 40. The specific number can be 5, 7, 9, etc., selected according to the size of the high-speed motor. Multiple air ducts are formed between the inner ring connecting part 41 and the outer ring connecting part 43, serving a guiding function to guide air to quickly pass over the outer surface of the inner ring connecting part 41 and the stator component 10. When the propeller 60 rotates, the air in the air ducts is blown out, thereby carrying away heat from the surface of the inner ring connecting part 41, thus improving the heat dissipation speed of the high-speed motor.

[0047] Specifically, in this embodiment, the inner ring connecting part 41 mainly serves to connect the stator component 10, the cable guard 20, and the bearing housing insert 30, providing protection. Simultaneously, several air guide plates 42 are arranged circumferentially on the outer surface of the inner ring connecting part 41. The air guide plates 42 are spiral-shaped to increase the length of the air duct and improve heat dissipation efficiency. The outer ring connecting part 43 surrounds the air guide plates 42, sealing the sides of the air duct and leaving only the air inlet and outlet along the axial direction of the high-speed motor, further improving the orderly flow of air within the air duct. When the propeller 60 blows air at the air inlet, the air in the air duct is blown out from the air outlet, creating negative pressure, which facilitates rapid air intake and thus increases the airflow speed within the air duct.

[0048] Specifically, in this embodiment, the inner ring connecting part 41, a plurality of air guide plates 42, and the outer ring connecting part 43 are interconnected and integrally formed, which is convenient to manufacture, stable in connection, and conducive to maintaining the stability of the air duct.

[0049] For example Figure 2As shown, in another embodiment of this invention, the outer circular surface of the inner ring connecting portion 41 is flush with the outer circular surface of the stator component 10; one end of the air guide plate 42 is disposed on the outer circular surface of the inner ring connecting portion 41, and the other end extends toward the stator component 10 and contacts the outer circular surface of the stator component 10.

[0050] In this embodiment, the inner ring connecting part 41 is integrated with the stator component 10, with a flush outer surface and an overall cylindrical shape. Therefore, the air guide plate 42 extends from the inner ring connecting part 41 towards the stator component 10 and fits against the outer surface of the stator component 10. The air duct formed between adjacent air guide plates 42 is also partially composed of the stator component 10. Therefore, during the heat dissipation process, the stator component 10 can be directly cooled, improving the heat dissipation efficiency.

[0051] Traditional high-speed motors house the stator structure within a casing, requiring heat to be conducted through the casing before dissipating, resulting in slow heat dissipation. This embodiment dissipates heat directly from the stator structure surface, increasing the heat dissipation rate, which improves the performance of the high-speed motor and reduces overheating issues.

[0052] Specifically, as another embodiment of this invention, the diameter of the through hole 21 is disclosed to be less than or equal to the diameter of the radial cross-section of the assembly cavity 11; and the diameter of the through hole 21 is greater than the diameter of the radial cross-section of the assembly chamber 31.

[0053] In this embodiment, the diameter of the through hole 21 is set to be less than or equal to the diameter of the radial cross-section of the assembly cavity 11 to ensure that the edge of the wire cover 20 extends to the inside of the stator component 10, so that the wire cover 20 completely covers the coil and plays a protective role. The diameter of the through hole 21 is greater than the diameter of the radial cross-section of the assembly chamber 31 to avoid glue leakage during injection molding and protect the stator component 10.

[0054] Specifically, in this embodiment, the plastic housing 40 is molded on the outside of the stator component 10, the wire protector 20, and the bearing housing insert 30. To improve the product yield, a mandrel can be placed in the mold between molding processes to insert the stator component 10, the wire protector 20, and the bearing housing insert 30. Specifically, a mandrel with the same shape as the rotor 50 of the high-speed motor is provided. Before molding, the mandrel is inserted into the assembly chamber 31, the through hole 21, and the assembly cavity 11. This ensures that the stator component 10, the wire protector 20, and the bearing housing insert 30 are coaxially aligned and maintain axial contact with each other, thus maintaining a stable state before injection molding.

[0055] like Figure 3As shown, in another embodiment of this invention, the cable cover 20 includes a main board body 22 and a bending portion 23. The main board body 22 is annular in shape, and the inner diameter of the main board body 22 is less than or equal to the diameter of the radial cross-section of the assembly cavity 11. The outer diameter of the main board body 22 is equal to the outer diameter of the annular body 131. The bending portion 23 is located on the outer edge of the main board body 22 and bends toward the annular body 131, surrounding and fitting the outer circular surface of the first boss 1311.

[0056] In this embodiment, the inner side of the main board body 22 contacts the second protrusion 1331, and the outer side contacts the first protrusion 1311, maintaining stability. The main board body 22 covers the coil. The bending portion 23 surrounds the outer circular surface of the first protrusion 1311, so that the wire cover 20 is completely covered on the stator component 10. The first protrusion 1311 constrains the bending portion 23, preventing the wire cover 20 from shifting or slipping, and further improving the stability of the assembly of the wire cover 20 and the stator component 10.

[0057] For example Figure 2 As shown, in another embodiment of this invention, the outer diameter of the first boss 1311 is smaller than the outer diameter of the stator core 12. The stator core 12 has a connecting end face at one end facing the wire cover 20, and the first boss 1311 is formed on the connecting end face. The plastic housing 40 is integrally injection molded on the connecting end face.

[0058] In this embodiment, the annular body 131 is attached to the inner circular surface of the stator core 12, and the first boss 1311 protrudes from the stator core 12, partially wrapping around the end face of the stator core 12, thereby maintaining the relative stability of the rubber-coated bracket 13 and the stator core 12. The connecting end face is located outside the first boss 1311, and the plastic shell 40 contacts the connecting end face. Through injection molding, the connection effect between the stator component 10 and the plastic shell 40 is achieved, resulting in a small connection gap and a tight connection.

[0059] like Figure 4 and Figure 5 As shown, in another embodiment of this invention, the stator component 10 includes a stator core 12 and a rubber-coated bracket 13. The stator core 12 is annular in shape, and a plurality of winding teeth 121 are protruding from the inner circular surface of the stator core 12. The rubber-coated bracket 13 is nested on the stator core 12. The rubber-coated bracket 13 includes an annular body 131 that fits against the inner circular surface of the stator core 12, a winding portion 132 that is connected to the annular body 131 and wraps around the winding teeth 121, and an arc-shaped baffle 133 that is connected to the winding portion 132.

[0060] In this embodiment, the winding part 132 is used to wind enameled wire to form the coil, and the annular body 131 separates the coil from the stator core 12 to prevent circuit failure. In addition, the coil is formed by winding enameled wire multiple times and has a certain thickness. The annular body 131 and the arc-shaped baffle 133 are set on both sides of the coil to limit its movement and prevent the coil from coming loose.

[0061] Specifically, the rubber-coated bracket 13 disclosed in this embodiment is a plastic bracket, which has good insulation and is easy to manufacture. The annular body 131, the winding part 132, and the arc-shaped baffle 133 can all be integrally molded, which allows for fast production speed, and the product is lightweight and has a long service life, which is beneficial to improving the performance of high-speed motors and extending their service life.

[0062] like Figure 4 As shown, the arc-shaped baffle 133 is provided on the winding part 132 at one end away from the annular body 131, and multiple arc-shaped baffles 133 surround to form the assembly cavity 11; the annular body 131 at least partially protrudes outside the stator core 12 to form a first boss 1311; the end of the arc-shaped baffle 133 protrudes outside the stator core 12 to form a second boss 1331; the second boss 1331 and the first boss 1311 are flush and together overlap the wire protection cover 20.

[0063] In this embodiment, the first boss 1311 and the second boss 1331 extend outside the stator core 12 to facilitate the positioning and assembly of the wire protection cover 20. This ensures the wire protection cover 20 accurately covers the first boss 1311 and the second boss 1331, completely shielding the coil between them and providing protection. Simultaneously, the first boss 1311 and the second boss 1331 support the wire protection cover 20 from the inside out, stabilizing it and facilitating the assembly of the bearing housing insert 30 on the wire protection cover 20. This also ensures stability during the integrated injection molding of the plastic housing 40.

[0064] As another embodiment of this application, a high-speed motor is also disclosed, which includes an integrated structure of the housing and stator of the high-speed motor as described above.

[0065] In summary, this application discloses an integrated structure of the housing and stator of a high-speed motor, comprising a stator component 10, a coil cover 20, a bearing housing insert 30, and a plastic housing 40. Multiple coils are arranged circumferentially on the stator component 10, forming an assembly cavity 11 that extends along the length of the stator component 10. The coil cover 20 covers the end face of the stator component 10, covering the coils. The coil cover 20 faces the assembly cavity 40. A through hole 21 is formed at the entrance position of cavity 11; the bearing housing insert 30 is disposed on the side of the wire guard cover 20 away from the stator component 10; an assembly chamber 31 is provided on the bearing housing insert 30; the assembly chamber 31, the through hole 21, and the assembly cavity 11 are sequentially connected and coaxially arranged for assembling the rotor 50 of the high-speed motor; the plastic housing 40 is integrally injection molded on the end face of the stator component 10, the outer circular surface of the wire guard cover 20, and the outer circular surface of the bearing housing insert 30. In this embodiment, the plastic housing 40 is integrally injection molded. The stator component 10, the wire guard cover 20, and the bearing housing insert 30 are first fixed in the mold, and then integrally processed by injecting plastic material, eliminating the assembly process, which is beneficial to improving the production efficiency of the high-speed motor and reducing processing costs. Moreover, compared with the traditional glue bonding process, the product integrally formed by the mold has a better connection effect, and there is no need to consider the problem of bonding uniformity, thus improving the production yield.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0067] It should be noted that this utility model uses the integrated molding structure of the housing and stator of a high-speed motor and a high-speed motor as examples to introduce the specific structure and working principle of this utility model. However, the application of this utility model is not limited to the integrated molding structure of the housing and stator of a high-speed motor and a high-speed motor. It can also be applied to the production and use of other similar workpieces.

[0068] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-speed motor housing and stator integrally formed structure, characterized in that, include: A stator component, wherein multiple coils are arranged circumferentially on the stator component, the multiple coils enclosing an assembly cavity, the assembly cavity extending along the length direction of the stator component; A wire cover, which fits over the end face of the stator component, is used to cover the coil; A through hole is formed on the wire protection cover at the entrance position of the assembly cavity; A bearing housing insert is disposed on the side of the wire protection cover opposite to the stator component; the bearing housing insert is provided with an assembly chamber; the assembly chamber, the through hole and the assembly cavity are connected in sequence and coaxially arranged, for assembling the rotor of the high-speed motor; The plastic housing is integrally injection molded onto the end face of the stator component, the outer circular surface of the wire guard cover, and the outer circular surface of the bearing housing insert.

2. The high-speed motor housing and stator integrally formed structure according to claim 1, characterized in that, The plastic housing includes: The inner ring connecting part is connected to the stator component and is nested on the outer circular surface of the wire guard cover and the outer circular surface of the bearing housing insert; Several air guide vanes are arranged in a ring on the outside of the inner ring connection. The outer ring connecting part is sleeved on the outside of the inner ring connecting part and connected to the air guide plate; The two adjacent air guide plates, the inner ring connecting part, and the outer ring connecting part together form an air duct.

3. The integrated structure of the housing and stator of the high-speed motor according to claim 2, characterized in that, The outer circular surface of the inner ring connecting part is flush with the outer circular surface of the stator component; one end of the air guide plate is located on the outer circular surface of the inner ring connecting part, and the other end extends toward the stator component and contacts the outer circular surface of the stator component.

4. The integrated structure of the housing and stator of the high-speed motor according to claim 1, characterized in that, The diameter of the through hole is less than or equal to the diameter of the radial cross-section of the assembly cavity; and the diameter of the through hole is greater than the diameter of the radial cross-section of the assembly cavity.

5. The high-speed motor housing and stator integrally formed structure according to claim 1, characterized in that, The stator component includes: The stator core is ring-shaped, and multiple winding teeth are protruding on the inner circular surface of the stator core. A rubber-coated bracket is nested on the stator core. The rubber-coated bracket includes an annular body that fits the inner circular surface of the stator core, a winding portion connected to the annular body and wrapping the winding teeth, and an arc-shaped baffle connected to the winding portion. The winding portion is used to wind enameled wire to form the coil. The arc-shaped baffle is located on one end of the winding portion away from the annular body, and multiple arc-shaped baffles together form the assembly cavity. The annular body protrudes at least partially outside the stator core, forming a first protrusion; the end of the arc-shaped baffle protrudes outside the stator core, forming a second protrusion; the second protrusion and the first protrusion are flush and overlap the wire protection cover.

6. The high-speed motor housing and stator integrally formed structure according to claim 5, characterized in that, The cable protector includes: The main board body is annular in shape, and its inner diameter is less than or equal to the diameter of the radial cross-section of the assembly cavity; the outer diameter of the main board body is equal to the outer diameter of the annular body. The bending portion is located on the outer edge of the main body and bends toward the annular body, surrounding and fitting the outer circular surface of the first boss.

7. The high-speed motor housing and stator integrally formed structure according to claim 5, characterized in that, The outer diameter of the first boss is smaller than the outer diameter of the stator core. The stator core has a connecting end face at one end facing the wire cover, and the first boss is formed on the connecting end face. The plastic shell is integrally injection molded onto the connecting end face.

8. The high-speed motor housing and stator integrally formed structure according to any one of claims 1 to 7, characterized in that, The cable guard is a metal cable guard or an alloy cable guard; and / or, the bearing housing insert is a metal insert or an alloy insert.

9. The high-speed motor housing and stator integrally formed structure according to any one of claims 1 to 7, characterized in that, The outer circular surface of the bearing housing insert is provided with toothed patterns.

10. A high-speed motor, characterized in that, It includes the integrated housing and stator structure of the high-speed motor as described in any one of claims 1 to 9.

Images