A type of encapsulated motor for a fan

Abstract

This utility model relates to the field of motors and discloses a plastic-encapsulated motor for fans. A stator assembly is fixedly connected to the inner side of the housing, a front end cover is fixedly connected to the right side of the housing, a rotor assembly is rotatably connected to the middle of the front end cover, a rear end cover is rotatably connected to the left side of the rotor assembly, and a gearbox is fixedly connected to the left side of the rear end cover. Enamelled wire windings are wound on the wire slots of the stator core, with the wire ends wound around pins. The power wire is soldered together via a PCB board and pins to achieve electrical connection between the internal windings and external components. The stator assembly, front end cover, wire clamps, and connecting rods are injection molded into a single housing. The rotor assembly is placed inside the housing, the rear end cover is pressed on, the gearbox is installed, and finally, the pins on the shaft are pressed in to complete the assembly. Most of the process can be automated, eliminating multiple manual assembly steps, reducing labor costs. The entire assembly process is significantly simplified, highly automated, efficient, versatile, and cost-effective.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically a plastic-encapsulated motor for a fan. Background Technology

[0002] After years of development, the technology for producing motor structures has become increasingly mature, especially the injection molding process. Through precise mold design and parameter control, the injection molding process ensures the consistency of component size and shape, improving the overall performance and reliability of the motor. The plastic-encapsulated motor for fans is a type of electric motor that uses plastic encapsulation technology, which has advantages such as dustproof, good insulation performance, and high reliability.

[0003] However, the motor drive part of common fans usually uses a conventional iron-cased motor. The motor manufacturing process is complicated, the production efficiency is low, there are many types of materials, the versatility is poor, and the entire iron core is exposed, which is prone to rust and other problems. Utility Model Content

[0004] The purpose of this invention is to provide a plastic-encapsulated motor for a fan in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: a plastic-encapsulated motor for a fan includes a main body housing, a stator assembly fixedly connected to the inner side of the housing, a front end cover fixedly connected to the right side of the housing, a rotor assembly rotatably connected to the middle of the front end cover, a rear end cover rotatably connected to the left side of the rotor assembly, and a gearbox fixedly connected to the left side of the rear end cover.

[0006] By adopting the above technical solution, the stator assembly, during the manufacturing and installation of the equipment, includes a stator core, an upper insulating frame, a lower insulating frame, pins, a PCB board, and enameled wire windings. The stator core is cylindrical and stamped in one piece, eliminating the need for welding to form a circle. This not only reduces manufacturing processes but also improves the accuracy of the inner circle. The upper and lower insulating frames are nested on the upper and lower sides of the stator core. The pins are inserted into the upper insulating frame in one go using the equipment. Then, the enameled wire windings are wound around the wire slots of the stator core, with the wire ends wrapped around the pins. The power lines are soldered together through the PCB board and pins, thus achieving electrical connection between the internal windings and external components. This simplifies the overall structure of the stator assembly. The housing is injection molded from BMC material to form a single unit consisting of the stator assembly, front cover, wire clamp, and connecting rod. The rotor assembly is then placed inside the housing, followed by pressing on the rear cover and installing the gearbox. Finally, the pins on the shaft are pressed in to complete the assembly. Most of the process can be completed by automated equipment, eliminating multiple manual assembly steps, reducing labor costs. The entire assembly process is significantly simplified, highly automated, efficient, versatile, and cost-effective.

[0007] In a preferred embodiment, the housing is integrally injection molded with the stator assembly, front end cover, wire clamp and connecting rod using BMC material, and the housing circumference is injection molded with mounting angles that connect to the load.

[0008] By adopting the above technical solutions, the number of equipment parts is reduced, thereby reducing equipment assembly processes, simplifying equipment assembly, and lowering costs.

[0009] In a preferred embodiment, the stator assembly includes a stator core, an upper insulating frame, a lower insulating frame, a pin, a PCB board, and an enameled wire winding. The lower insulating frame and the upper insulating frame are nested on the upper and lower sides of the stator core. The pin is inserted into the upper insulating frame in one go. The enameled wire winding is wound on the wire slot of the stator core, and the beginning and end of the enameled wire winding are wrapped around the pin.

[0010] By adopting the above technical solution, the equipment can be assembled automatically, eliminating multiple manual assembly processes and reducing labor costs.

[0011] In a preferred embodiment, the stator core is cylindrical and formed by a single stamping process.

[0012] By adopting the above technical solution, the manufacturing process is reduced while the accuracy of the inner circle is improved.

[0013] In a preferred embodiment, the connecting rod is T-shaped, and an iron sheet is riveted to the top of the connecting rod. The iron sheet is injection molded into the bottom of the housing using an injection mold.

[0014] By adopting the above technical solution, the connection of the connecting rod can be completed simultaneously during the injection molding process, eliminating the need for manual assembly and ensuring the strength of the connecting rod.

[0015] In a preferred embodiment, the rotor assembly includes a rotor shaft, a cast aluminum rotor, and bearings, the cast aluminum rotor and bearings being pressed onto the rotor shaft, and the rotor assembly being fixed within a housing by a front end cover and a rear end cover.

[0016] By adopting the above technical solutions, the equipment assembly is simple and the installation is quick and convenient.

[0017] In a preferred embodiment, the rear end cover includes an outer flange, an inner flange, a gearbox limiting hole, a screw fastening hole, and a heat dissipation hole. The outer flange and the inner flange are fixedly connected to the rear end face of the housing by interference fit riveting.

[0018] By adopting the above technical solution, the quality of the motor is ensured through interference fit fastening on both sides.

[0019] In a preferred embodiment, the gearbox is mounted on the rear end cover via a positioning boss.

[0020] By adopting the above technical solutions, precise positioning and installation can be achieved.

[0021] In a preferred embodiment, the screw fastening holes of the rear end cover and the screw mounting holes of the gearbox are fastened together by screws.

[0022] By adopting the above technical solution, the gearbox 8, the rear cover 7, and the housing 1 are fastened together as a whole.

[0023] In a preferred embodiment, a pin is slidably connected to the outer side of the rotor assembly.

[0024] By adopting the above technical solutions, the overall assembly becomes simple, convenient, and quick.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0026] In this invention, during the manufacturing and installation of the equipment, the stator assembly includes a stator core, an upper insulating frame, a lower insulating frame, pins, a PCB board, and enameled wire windings. The stator core is cylindrical and formed in one stamping process, eliminating the need for welding to form a circle. This not only reduces manufacturing steps but also improves the accuracy of the inner circle. The upper and lower insulating frames are nested on the upper and lower sides of the stator core. The pins are inserted into the upper insulating frame in one go using the equipment. Then, the enameled wire windings are wound around the wire slots of the stator core, with the wire ends wrapped around the pins. The power lines are soldered together through the PCB board and pins, thereby achieving electrical connection between the internal windings and external components. This results in a simple overall structure for the stator assembly. The housing is injection molded from BMC material to form a single unit consisting of the stator assembly, front cover, wire clamp, and connecting rod. The rotor assembly is then placed inside the housing, followed by pressing on the rear cover and installing the gearbox. Finally, the pins on the shaft are pressed in to complete the assembly. Most of the process can be completed by automated equipment, eliminating multiple manual assembly steps, reducing labor costs. The entire assembly process is significantly simplified, highly automated, efficient, versatile, and cost-effective. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the assembly structure of the device of this utility model;

[0028] Figure 2 This is an exploded structural diagram of the device in this utility model;

[0029] Figure 3 This is a schematic diagram of the stator assembly structure in this utility model;

[0030] Figure 4 This is an exploded view of the stator assembly in this utility model.

[0031] Figure 5This is a schematic diagram of the rear end cover structure in this utility model.

[0032] The markings in the diagram are: 1. Housing; 11. Mounting angle; 2. Front end cover; 3. Stator assembly; 31. Stator core; 32. Upper insulating frame; 33. Lower insulating frame; 34. Pin; 35. PCB board; 36. Enamelled wire winding; 4. Wire clamp; 5. Connecting rod; 6. Rotor assembly; 61. Rotor shaft; 62. Cast aluminum rotor; 63. Bearing; 7. Rear end cover; 71. Outer flange; 72. Inner flange; 73. Gearbox limiting hole; 74. Screw fastening hole; 75. Heat dissipation hole; 8. Gearbox; 9. Screw; 10. Pin. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] Example:

[0035] Reference Figure 1-5 A plastic-encapsulated motor for a fan includes a main housing 1, a stator assembly 3 fixedly connected to the inner side of the housing 1, a front cover 2 fixedly connected to the right side of the housing 1, a rotor assembly 6 rotatably connected to the middle of the front cover 2, a rear cover 7 rotatably connected to the left side of the rotor assembly 6, and a gearbox 8 fixedly connected to the left side of the rear cover 7.

[0036] Reference Figure 1-5During the manufacturing and installation of the equipment, the stator assembly 3 includes a stator core 31, an upper insulating frame 32, a lower insulating frame 33, pins 34, a PCB board 35, and enameled wire windings 36. The stator core 31 is cylindrical and is formed by stamping in one piece, eliminating the need for welding to form a circle. This not only reduces manufacturing processes but also improves the accuracy of the inner circle. The upper insulating frame 32 and the lower insulating frame 33 are nested on the upper and lower sides of the stator core 31. The pins 34 are inserted into the upper insulating frame 32 in one go using the equipment. Then, the enameled wire windings 36 are wound around the wire slots of the stator core 31, with the wire ends wrapped around the pins 34. The power lines are soldered together through the PCB board 35 and the pins 34, thereby realizing the electrical connection between the internal windings and external components. Thus, the overall structure of the stator assembly 3 is simple. The housing 1 is made of BMC material to injection mold the stator assembly 3, front end cover 2, wire clamp 4 and connecting rod 5 into one piece. The rotor assembly 6 is placed into the housing 1, then the rear end cover 7 is pressed on and the gearbox 8 is installed. Finally, the pins 10 on the shaft are pressed in to complete the assembly. Most of the process can be completed by automated equipment, saving multiple manual assembly processes, reducing labor costs. The entire assembly process has greatly reduced the number of processes and is simple to assemble. It has a high degree of automation, high production efficiency, high versatility and low cost.

[0037] Reference Figure 1-2 The housing 1 is made of BMC material to injection mold the stator assembly 3, front end cover 2, wire clamp 4 and connecting rod 5 into one piece. The housing 1 has an injection molded mounting angle 11 on its circumference that is connected to the load. This reduces the number of equipment parts, thereby reducing the number of assembly processes, simplifying equipment assembly, and reducing costs.

[0038] Reference Figure 1-4 The stator assembly 3 includes a stator core 31, an upper insulating frame 32, a lower insulating frame 33, pins 34, a PCB board 35, and an enameled wire winding 36. The lower insulating frame 33 and the upper insulating frame 32 are nested on the upper and lower sides of the stator core 31. The pins 34 are inserted into the upper insulating frame 32 in one go. The enameled wire winding 36 is wound around the wire slot of the stator core 31, and the beginning and end of the wire of the enameled wire winding 36 are wrapped around the pins 34. It can be assembled by automated equipment, saving multiple manual assembly processes and reducing labor costs.

[0039] Reference Figure 1-4 The stator core 31 is cylindrical and formed in one stamping process. This reduces manufacturing steps and improves the accuracy of the inner circle.

[0040] Reference Figure 1-2 The connecting rod 5 is T-shaped, and an iron plate is riveted to the top of the connecting rod 5. The iron plate is injected into the bottom of the housing 1 through an injection mold. The connection of the connecting rod is completed simultaneously during the injection molding process, eliminating the need for manual assembly and ensuring the strength of the connecting rod.

[0041] Reference Figure 1-2The rotor assembly 6 includes a rotor shaft 61, a cast aluminum rotor 62, and a bearing 63. The cast aluminum rotor 62 and the bearing 63 are pressed onto the rotor shaft 61. The rotor assembly 6 is fixed inside the housing 1 by the front end cover 2 and the rear end cover 7. This makes the equipment assembly simple and the installation quick and convenient.

[0042] Reference Figure 1-5 The rear end cover 7 includes an outer flange 71, an inner flange 72, a gearbox limiting hole 73, a screw fastening hole 74, and a heat dissipation hole 75. The outer flange 71 and the inner flange 72 are fixedly connected to the rear end face of the housing 1 by interference fit riveting. The interference fit on both sides ensures the quality of the motor.

[0043] Reference Figure 1-2 The gearbox 8 is mounted on the rear end cover 7 via a positioning boss, enabling precise positioning and installation.

[0044] Reference Figure 1-2 The screw fastening holes 74 of the rear end cover 7 and the screw mounting holes of the gearbox 8 are fastened together by screws 9. This achieves a secure connection between the gearbox 8, the rear end cover 7, and the housing 1, making them a single unit.

[0045] Reference Figure 1-2 The outer side of the rotor assembly 6 is slidably connected with pins 10, making the overall assembly simple, convenient and quick.

[0046] The implementation principle of this utility model's encapsulated motor for a fan is as follows:

[0047] During the manufacturing and installation of the equipment, the stator assembly 3 includes a stator core 31, an upper insulating frame 32, a lower insulating frame 33, pins 34, a PCB board 35, and enameled wire windings 36. The stator core 31 is cylindrical and is stamped in one piece without the need for welding to form a circle. This not only reduces manufacturing processes but also improves the accuracy of the inner circle. The upper insulating frame 32 and the lower insulating frame 33 are nested on the upper and lower sides of the stator core 31. The pins 34 are inserted into the upper insulating frame 32 in one go using the equipment. Then, the enameled wire windings 36 are wound around the wire slots of the stator core 31, with the wire ends wrapped around the pins 34. The power lines are soldered together through the PCB board 35 and the pins 34, thereby realizing the electrical connection between the internal windings and external components. Thus, the overall structure of the stator assembly 3 is simple. The housing 1 is injection molded from BMC material to form a single unit consisting of the stator assembly 3, the front end cover 2, the wire clamp 4, and the connecting rod 5. Then, the rotor assembly 6 is placed inside the housing 1, followed by pressing on the rear end cover 7 and installing the gearbox 8. Finally, the pins 10 on the shaft are pressed in to complete the assembly. Most of the process can be completed by automated equipment, eliminating multiple manual assembly steps, reducing labor costs. The entire assembly process has significantly fewer steps and is simple to assemble, with a high degree of automation, high production efficiency, high versatility, and low cost.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plastic-encapsulated motor for a fan, comprising a main housing (1), characterized in that: The stator assembly (3) is fixedly connected to the inner side of the housing (1), the front end cover (2) is fixedly connected to the right side of the housing (1), the rotor assembly (6) is rotatably connected to the middle of the front end cover (2), the rear end cover (7) is rotatably connected to the left side of the rotor assembly (6), and the gearbox (8) is fixedly connected to the left side of the rear end cover (7). The stator assembly (3), the front end cover (2), the wire clamp (4) and the connecting rod (5) are injection molded into one piece by BMC material. The housing (1) has an installation angle (11) for connection with the load injection molded on its circumference.

2. The encapsulated motor for a fan as described in claim 1, characterized in that: The stator assembly (3) includes a stator core (31), an upper insulating frame (32), a lower insulating frame (33), a pin (34), a PCB board (35), and an enameled wire winding (36). The lower insulating frame (33) and the upper insulating frame (32) are nested on the upper and lower sides of the stator core (31). The pin (34) is inserted into the upper insulating frame (32) at once. The enameled wire winding (36) is wound on the wire slot of the stator core (31). The beginning and end of the enameled wire winding (36) are wrapped around the pin (34).

3. A plastic-encapsulated motor for a fan as described in claim 2, characterized in that: The stator core (31) is cylindrical and is formed by one stamping.

4. A plastic-encapsulated motor for a fan as described in claim 3, characterized in that: The connecting rod (5) is T-shaped, and an iron sheet is riveted to the top of the connecting rod (5). The iron sheet is injected into the bottom of the housing (1) through an injection mold.

5. A plastic-encapsulated motor for a fan as described in claim 1, characterized in that: The rotor assembly (6) includes a rotor shaft (61), a cast aluminum rotor (62) and a bearing (63). The cast aluminum rotor (62) and the bearing (63) are pressed into the rotor shaft (61). The rotor assembly (6) is fixed in the housing (1) by a front end cover (2) and a rear end cover (7).

6. A plastic-encapsulated motor for a fan as described in claim 1, characterized in that: The rear end cover (7) includes an outer flange (71), an inner flange (72), a gearbox limiting hole (73), a screw fastening hole (74), and a heat dissipation hole (75). The outer flange (71) and the inner flange (72) are fixedly connected to the rear end face of the housing (1) by interference fit riveting.

7. A plastic-encapsulated motor for a fan as described in claim 1, characterized in that: The gearbox (8) is mounted on the rear end cover (7) via a positioning boss.

8. A plastic-encapsulated motor for a fan as described in claim 1, characterized in that: The screw fastening hole (74) of the rear end cover (7) and the screw mounting hole of the gearbox (8) are fastened together by screws (9).

9. A plastic-encapsulated motor for a fan as described in claim 1, characterized in that: The outer side of the rotor assembly (6) is slidably connected with a pin (10).

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