An inner-wound iron shell alternating current aluminum wire motor structure

Abstract

The utility model belongs to the technical field of single -phase operation asynchronous motor for household electrical appliances such as electric fan, range hood, air purifier, bathroom heater, etc. including the motor casing that is combined by front end cover and rear end cover, its inside is hollow structure, stator subassembly, its fixed mounting is in the motor casing inside, and stator subassembly includes stator core, and the upper end, lower end of stator core is equipped with insulation frame respectively, and the upper surface of one side of insulation frame is provided with containing groove, and the top of containing groove is fixedly installed with welding platform, and the insertion needle is inserted in the top of insulation frame, and the inside of stator core is wound with aluminium wire and the head is welded with the one side of insertion needle on the upper surface of welding platform, the utility model puts forward a kind of inner winding type's iron shell alternating current aluminium wire motor structure, and power cord is welded together through PCB board and insertion needle, so that the overall structure of stator subassembly is simple, and most processes can be assembled by automatic equipment, so that multiple manual assembly processes are saved, and labor cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of single-phase asynchronous motors for household appliances such as electric fans, range hoods, air purifiers, and bathroom heaters, specifically a type of internally wound iron-shell AC aluminum wire motor structure. Background Technology

[0002] An aluminum wire motor is a type of electric motor that uses aluminum wire instead of copper wire. Because aluminum costs less than half the price of copper and is less than one-third the weight of copper, its cost advantage is significant, leading to a growing number of motor manufacturers producing aluminum wire motors.

[0003] Currently, aluminum wire motors used in household appliances such as electric fans, range hoods, air purifiers, and bathroom heaters typically employ distributed windings with a conventional iron shell structure. These windings require tooling; they are first wound individually onto the tooling, and then fixed within the iron core through a series of steps including wire placement and embedding. The stator connection involves winding enameled round wire onto the power cord, then connecting them using tinning (soldering), followed by individual sealing of the solder joints. The entire production process is cumbersome, inefficient, and entirely manual, demanding high levels of labor intensity and skill from workers. Furthermore, the high scrap rate during manual operation contributes to the high production cost. Additionally, ensuring a tight seal between the power cord and the enameled aluminum wire is difficult, leading to oxidation at the connection point, resulting in poor power delivery and a short lifespan. Utility Model Content

[0004] The purpose of this utility model is to provide an internally wound iron-shell AC aluminum wire motor structure in order to solve the above problems.

[0005] The technical solution adopted in this utility model is as follows: an internally wound iron-shell AC aluminum wire motor structure, comprising:

[0006] The motor housing is formed by combining a front cover and a rear cover, and its interior is a hollow structure.

[0007] The stator assembly is fixedly installed inside the motor housing. The stator assembly adopts an integral stator core. An insulating frame is fixedly installed on the upper end of the stator core. A receiving groove is provided on one side of the upper surface of the insulating frame. A welding platform is fixedly installed on the top of the receiving groove. A pin is inserted into the top of the insulating frame. An aluminum enameled wire is wound on the inner side of the stator core, and its head is welded to the upper surface of the welding platform along with one side of the pin.

[0008] The rotor assembly is rotatably connected to the motor housing. The rotor assembly also includes a rotor shaft, a cast aluminum rotor, and two bearings. The two bearings are respectively fixedly installed at the center of the front end cover and the rear end cover. The rotor shaft is rotatably connected inside the two bearings. The cast aluminum rotor is fixedly installed on the outer wall of the middle part of the rotor shaft and is located at the center of the stator assembly.

[0009] Through the above technical solution, the pin is automatically inserted into the slot of the insulating frame. Aluminum enameled wire is wound around the insulating frame with the pin inserted, and its head is fixed to the pin. Then, the equipment welds the enameled wire and the pin together to form a solder joint, thus connecting the aluminum enameled wire to the pin and establishing conductivity. Sealing adhesive is then applied to the solder joint and allowed to completely solidify, ensuring the solder joint is completely isolated from the air and preventing quality issues such as lack of conductivity caused by solder joint oxidation. This allows most of the process to be automated, eliminating multiple manual assembly steps and reducing labor costs.

[0010] In a preferred embodiment, the stator core is an integral structure, formed by stamping in one piece using a mold, and is round in shape, but can also be square or other polygonal in shape.

[0011] Through the above technical solution, the integral stator core is stamped in one piece by a mold, without the need for separate welding into a circle. This not only ensures the rigidity of the stator core, but also improves the roundness of the inner circle of the stator, effectively reducing motor noise.

[0012] In a preferred embodiment, a support boss is integrally provided on one side of the upper surface of the insulating frame, and the support boss has a slot and a receiving groove inside.

[0013] In a preferred embodiment, the height of the receiving groove is lower than the height of the welding platform.

[0014] The above technical solution ensures that the sealing and insulating adhesive can completely cover the weld joint in the receiving groove, while strengthening the adhesion of the sealing and insulating adhesive to the insulating frame and ensuring the quality of the weld joint.

[0015] In a preferred embodiment, the pin further includes a fixing part, a welding part, and a connecting part, wherein the fixing part and the connecting part are on the same plane, and the connecting part is connected to the upper right of the fixing part, the welding part extends in a direction perpendicular to the fixing part, and wherein the fixing part is connected to the free end of the welding part in a T-shape.

[0016] In a preferred embodiment, a limiting boss is provided on the surface of the fixing part, and the height of the limiting boss protruding from the surface of the fixing part gradually decreases from top to bottom.

[0017] The above technical solution can increase the pin pull-out force while facilitating the insertion of the fixing part into the slot of the insulating frame.

[0018] In a preferred embodiment, a PCB board is fixedly mounted on the top of the insulating frame, and the PCB board is electrically connected to the connecting part.

[0019] Through the above technical solution, the stator assembly realizes the electrical connection between the internal windings and external components through pins and PCB board. Its assembly steps are simple and have the characteristics of high assembly efficiency, high degree of automation and stable product quality.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are: this utility model proposes an internally wound iron-shell AC aluminum wire motor structure.

[0021] The pin is inserted into the insulating frame using automated equipment. Aluminum enameled wire is wound around the insulating frame with the pin inserted, and the head is fixed to the pin. Then, the aluminum enameled wire and the pin are soldered together to form a solder joint, thus connecting the aluminum enameled wire and the pin and making them conductive. Sealing insulating glue is dripped onto the solder joint using automated equipment, allowing the sealing insulating glue to completely solidify on the solder joint, so that the solder joint can be completely isolated from the air, preventing quality problems such as no power supply caused by solder joint oxidation. Most of the process can be completed by automated equipment, saving multiple manual assembly steps and reducing labor costs. Attached Figure Description

[0022] Figure 1 This is an exploded view of the present invention;

[0023] Figure 2 This is a schematic diagram of the stator assembly of this utility model;

[0024] Figure 3 This is a partial view of the stator assembly of this utility model;

[0025] Figure 4 This is a simplified schematic diagram of a partial structure of the insulating frame in this utility model;

[0026] Figure 5 This is a simplified three-dimensional structural diagram of the pin in this utility model.

[0027] In the diagram, the markings are: 1-Stator assembly; 11-Stator core; 12-Insulating frame; 121-Slot; 122-Welding platform; 123-Receiving groove; 124-Support boss; 13-Pin; 131-Fixing part; 1311-Limiting boss; 132-Welding part; 133-Connecting part; 14-Aluminum enameled wire; 15-Solder joint; 16-Sealing insulating glue; 17-PCB board.

[0028] 2-Front end cap;

[0029] 3- Rear end cover;

[0030] 4-Rotor assembly; 41-Rotor shaft; 42-Cast aluminum rotor; 43-Bearing. Detailed Implementation

[0031] 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.

[0032] The following will combine Figure 1-5 A detailed description is provided of an internally wound iron-shell AC aluminum wire motor structure according to an embodiment of this utility model.

[0033] Example:

[0034] An internally wound iron-shell AC aluminum wire motor structure includes:

[0035] The motor housing is formed by combining the front cover 2 and the rear cover 3, and its interior is a hollow structure.

[0036] The stator assembly 1 is fixedly installed inside the motor housing. The stator assembly 1 adopts an integral stator core 11. An insulating frame 12 is fixedly installed on the upper end of the stator core 11. A support boss 124 is integrally provided on one side of the upper surface of the insulating frame 12. A slot 121 is opened inside the support boss 124. A receiving groove 123 is provided on one side of the upper surface of the insulating frame 12. A welding platform 122 is fixedly installed on the top of the receiving groove 123. The height of the receiving groove 123 is lower than the height of the welding platform 122, which ensures that the sealing insulating adhesive 16 can completely cover the weld point in the receiving groove 123, and at the same time strengthens the adhesion of the sealing insulating adhesive 16 on the insulating frame 12, ensuring the quality of the weld point 15.

[0037] A pin 13 is inserted into the top of the insulating frame 12. The pin 13 also includes a fixing part 131, a welding part 132, and a connecting part 133. A PCB board 17 is fixedly mounted on the top of the insulating frame 12. The PCB board 17 is electrically connected to the connecting part 133. The stator assembly 1 achieves electrical connection between the internal windings and external components through the pin 13 and the PCB board 17. The assembly steps are simple, and it has the characteristics of high assembly efficiency, high degree of automation, and stable product quality. The fixing part 131 and the connecting part 133 are on the same plane, and the connecting part 133 is connected to the right side of the fixing part 131. Above, the welding part 132 extends in a direction perpendicular to the fixing part 131. The fixing part 131 and the free end of the welding part 132 are connected in a T-shape. The inner side of the stator core 11 is wound with aluminum enameled wire 14 and its head is welded to the upper surface of the welding platform 122 on one side of the pin 13. The surface of the fixing part 131 is provided with a limiting boss 1311. The height of the limiting boss 1311 protruding from the surface of the fixing part 131 gradually decreases from top to bottom. This can increase the pull-out force of the pin 13 while facilitating the insertion of the fixing part 131 into the slot 121 of the insulating frame 12.

[0038] The rotor assembly 4 is rotatably connected to the motor housing. The rotor assembly 4 also includes a rotor shaft 41, a cast aluminum rotor 42, and bearings 43. There are two bearings 43. The two bearings 43 are fixedly installed at the center of the front end cover 2 and the rear end cover 3, respectively. The rotor shaft 41 is rotatably connected to the inside of the two bearings 43. The cast aluminum rotor 42 is fixedly installed on the outer wall of the middle part of the rotor shaft 41. The cast aluminum rotor 42 is located at the center of the stator assembly 1.

[0039] Working principle:

[0040] The pin 13 is automatically inserted into the insulating frame 12. The aluminum enameled wire 14 is wound around the insulating frame 12 with the pin 13 inserted, and its head is fixed to the pin 13. Then, the aluminum enameled wire 14 and the pin 13 are soldered together to form a solder joint 15, thus connecting and conducting the aluminum enameled wire 14 to the pin 13. Sealing insulating adhesive 16 is then applied to the solder joint, allowing it to completely solidify and isolate the solder joint 15 from the air, preventing oxidation and potential quality issues such as lack of conductivity. This allows most of the assembly process to be automated, eliminating multiple manual assembly steps and reducing labor costs.

[0041] 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 type of internally wound iron-shell AC aluminum wire motor structure, characterized in that: include: The welding point (15) and the motor housing formed by the front cover (2) and the rear cover (3) have a hollow internal structure; The stator assembly (1) is fixedly installed inside the motor housing. The stator assembly (1) adopts an integral stator core (11). An insulating frame (12) is fixedly installed on the upper end of the stator core (11). A receiving groove (123) is provided on the upper surface of one side of the insulating frame (12). A welding platform (122) is fixedly installed on the top of the receiving groove (123). A pin (13) is inserted into the top of the insulating frame (12). An aluminum enameled wire (14) is wound around the inner side of the stator core (11), and its head is welded to the upper surface of the welding platform (122) on one side of the pin (13). The rotor assembly (4) is rotatably connected to the motor housing. The rotor assembly (4) also includes a rotor shaft (41), a cast aluminum rotor (42), and a bearing (43). There are two bearings (43). The two bearings (43) are fixedly installed at the center of the front end cover (2) and the rear end cover (3), respectively. The rotor shaft (41) is rotatably connected to the inside of the two bearings (43). The cast aluminum rotor (42) is fixedly installed on the outer wall of the middle part of the rotor shaft (41). The cast aluminum rotor (42) is located at the center of the stator assembly (1).

2. The internally wound iron-shell AC aluminum wire motor structure as described in claim 1, characterized in that: The stator core (11) is an integral structure, formed by one-time stamping with a mold, and is in the shape of a circle, square or other polygons.

3. The internally wound iron-shell AC aluminum wire motor structure as described in claim 1, characterized in that: The upper surface of the insulating frame (12) is integrally provided with a support boss (124), and the support boss (124) has a slot (121) and a receiving groove (123) inside.

4. The internally wound iron-shell AC aluminum wire motor structure as described in claim 3, characterized in that: The height of the receiving groove (123) is lower than the height of the welding platform (122).

5. The internally wound iron-shell AC aluminum wire motor structure as described in claim 4, characterized in that: The pin (13) further includes a fixing part (131), a welding part (132) and a connecting part (133). The fixing part (131) and the connecting part (133) are on the same plane, and the connecting part (133) is connected to the upper right of the fixing part (131). The welding part (132) extends in a direction perpendicular to the fixing part (131), wherein the fixing part (131) and the free end of the welding part (132) are connected in a T-shape.

6. The internally wound iron-shell AC aluminum wire motor structure as described in claim 5, characterized in that: The surface of the fixing part (131) is provided with a limiting boss (1311), and the height of the limiting boss (1311) protruding from the surface of the fixing part (131) gradually decreases from top to bottom.

7. The internally wound iron-shell AC aluminum wire motor structure as described in claim 1, characterized in that: The weld point (15) is protected with sealing insulating glue (16).

8. The internally wound iron-shell AC aluminum wire motor structure as described in claim 1, characterized in that: A PCB board (17) is fixedly installed on the top of the insulating frame (12), and the PCB board (17) is electrically connected to the connecting part (133).

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