Shaded pole motor end cover structure installed in embedded mode

Abstract

The utility model relates to the technical field of motor end cover structures, in particular to a shaded pole motor end cover structure installed in an embedded mode, which comprises an end cover main body and is characterized in that the end cover main body is formed by combining an upper end cover, an annular base and a lower end cover, and the outer walls of the tops of the upper end cover and the lower end cover are both provided with blade type heat dissipation structures distributed in a radial mode. The side face of the upper end cover is provided with an axially-protruding embedded connection part, a plurality of fixing bolts are evenly distributed at the joint of the upper end cover, the annular base and the lower end cover, and a rotor connection shaft is arranged in the center of the outer wall of the top of the lower end cover. According to the embedded shaded pole motor end cover structure, the assembly flexibility and the maintenance convenience are remarkably improved through the modular layered design (the upper end cover, the annular base and the lower end cover are combined), and damaged parts are allowed to be independently replaced without overall disassembly; efficient airflow circulation is formed through the synergistic effect of the blade type heat dissipation structure and the annular heat dissipation grooves, and the running temperature of the motor is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of motor end cover structure, and in particular to an embedded installation shaded pole motor end cover structure. Background Technology

[0002] Shaded-pole motors, as a typical example of single-phase asynchronous motors, are widely used in home appliances, small equipment, and other fields due to their simple structure and low cost. However, traditional end-cap structures have obvious drawbacks: insufficient heat dissipation leads to motor overheating, poor assembly concentricity causes operational vibration, and maintenance is cumbersome. In addition, insufficient sealing allows dust to easily enter the motor, while one-piece zinc alloy end caps, due to their high material hardness, cannot alleviate the radial force of the bearings, accelerating end cap wear.

[0003] Chinese patent discloses a motor end cover (publication number: CN 207426857 U) including an end cover body. The surface of the end cover body is recessed inward to form an accommodating space, and the inner wall of the side of the end cover body is recessed inward to form a stepped protruding ring. The inner diameter of the stepped protruding ring gradually decreases from the opening of the end cover body inward. However, this type of motor end cover has comprehensive defects such as low heat dissipation efficiency, poor assembly accuracy, inconvenient maintenance, and insufficient sealing. Therefore, a screen-mounted end cover structure for shaded pole motors is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the comprehensive defects of low heat dissipation efficiency, poor assembly accuracy, inconvenient maintenance and insufficient sealing of motor end covers in the existing technology, and to propose an embedded installation shaded pole motor end cover structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The end cover structure of the shaded-pole motor with an interlocking installation, comprising an end cover body, is characterized in that: the end cover body is composed of an upper end cover, an annular base, and a lower end cover; the outer top walls of both the upper and lower end covers are provided with radially distributed blade-type heat dissipation structures; the side of the upper end cover is provided with an axially protruding interlocking connecting component; multiple fixing bolts are distributed at the connection points of the upper end cover, the annular base, and the lower end cover; the fixing bolts are M4-M6 stainless steel bolts; and a rotor connecting shaft is provided at the center of the outer top wall of the lower end cover. Modular assembly: The split structure reduces processing difficulty and facilitates individual repair or replacement of damaged parts; High-efficiency heat dissipation: The blade-type structure enhances airflow turbulence, and combined with the aluminum alloy material, achieves rapid heat conduction, preventing motor overheating; Precise positioning: The interlocking component and the positioning pin hole ensure the concentricity of the end cover and the motor housing during assembly, reducing vibration and noise.

[0006] Preferably, the blade-type heat dissipation structure consists of 8-12 arc-shaped metal blades arranged at equal intervals with an inclination angle of 15°-30°, and the blade thickness is 1 / 3-1 / 2 of the thickness of the top of the end cover body. The arc-shaped blade design guides the airflow along the axial direction, improving heat dissipation efficiency; the blade thickness ratio balances heat dissipation performance and the overall mechanical strength of the end cover.

[0007] Preferably, the interlocking connecting component is in the shape of a rectangular boss, with a locating pin hole of 3-5mm in diameter at its center. The boss and the pin hole cooperate to achieve blind insertion assembly, simplifying the installation process; the rectangular structure prevents rotational offset and improves connection stability.

[0008] Preferably, the end cap body is die-cast from ADC12 aluminum alloy, and the surface is anodized to form a 0.02mm thick oxide layer, with a high-temperature resistant insulating coating sprayed on the outside of the oxide layer. The aluminum alloy die-casting reduces weight, the oxide layer enhances corrosion resistance, and the insulating coating prevents leakage, making it suitable for high-humidity environments.

[0009] Preferably, both the upper and lower end covers have annular heat dissipation grooves on their outer walls, and the number of annular heat dissipation grooves is 10 to 12, arranged in an equally spaced array. The heat dissipation grooves increase the surface area and accelerate heat dissipation;

[0010] The tank design reduces material usage while ensuring strength.

[0011] Preferably, a wear-resistant bushing is provided at the connection between the rotor connecting shaft and the lower end cover, and the inner wall of the wear-resistant bushing is provided with a spiral oil groove. The bushing reduces shaft-cover friction and wear, and the spiral oil groove achieves self-lubrication; the flexible contact reduces operating noise and improves motor stability.

[0012] The advantages of this utility model are:

[0013] This application features an interlocking shaded-pole motor end cover structure. Through a modular, layered design (upper end cover, annular base, and lower end cover combination), it significantly improves assembly flexibility and maintenance convenience, allowing for individual replacement of damaged components without overall disassembly. The synergistic effect of the blade-type heat dissipation structure and the annular heat dissipation grooves creates efficient airflow circulation, effectively reducing motor operating temperature and preventing performance degradation due to overheating. The interlocking connecting components, along with locating pin holes, ensure precise alignment between the end cover and the motor housing, reducing vibration and noise caused by assembly errors. Simultaneously, the wear-resistant bushing and spiral oil groove design extend the service life of the rotor connecting shaft, achieving self-lubrication and vibration damping. Furthermore, the ADC12 aluminum alloy material, combined with anodizing and insulating coating treatment, ensures lightweight construction while enhancing corrosion resistance and electrical safety, making it suitable for humid or high-dust environments. Attached Figure Description

[0014] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0017] In the diagram: 1. Interlocking connecting component; 2. Locating pin hole; 3. Upper end cover; 4. Annular base; 5. Lower end cover; 6. Arc-shaped metal blade; 7. Annular heat dissipation groove; 8. Wear-resistant bushing; 9. Rotor connecting shaft. Detailed Implementation

[0018] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Example

[0019] Please see Figure 1-2 As shown, an embedded-mount shaded-pole motor end cover structure includes an end cover body. The end cover body is characterized by being composed of an upper end cover 3, an annular base 4, and a lower end cover 5. The upper end cover 3 and the lower end cover 5 both have radially distributed blade-type heat dissipation structures on their top outer walls. The upper end cover 3 has an axially protruding embedded-type connecting component 1 on its side. Multiple fixing bolts are evenly distributed at the connection points of the upper end cover 3, the annular base 4, and the lower end cover 5. These fixing bolts are M4-M6 stainless steel bolts. A rotor connecting shaft 9 is located at the center of the top outer wall of the lower end cover 5. Modular assembly: The split structure reduces processing difficulty and facilitates individual repair or replacement of damaged parts; High-efficiency heat dissipation: The blade-type structure enhances airflow turbulence, and the aluminum alloy material enables rapid heat conduction, preventing motor overheating; Precise positioning: The embedded component and the positioning pin hole 2 ensure the concentricity of the end cover and the motor housing, reducing vibration and noise.

[0020] In this embodiment, the blade-type heat dissipation structure consists of 8-12 arc-shaped metal blades 6 arranged at equal intervals with an inclination angle of 15°-30°. The thickness of the blades is 1 / 3 to 1 / 2 of the thickness of the top of the end cap body. The arc-shaped blade design guides the airflow along the axial direction, improving heat dissipation efficiency; the blade thickness ratio balances heat dissipation performance and the overall mechanical strength of the end cap.

[0021] In this embodiment, the interlocking connecting component 1 is in the shape of a rectangular boss, with a positioning pin hole 2 of 3-5mm in diameter at its center. The boss and the pin hole cooperate to achieve blind insertion assembly, simplifying the installation process; the rectangular structure prevents rotational offset and improves connection stability.

[0022] In this embodiment, the end cap body is die-cast from ADC12 aluminum alloy, and the surface is anodized to form a 0.02mm thick oxide layer, with a high-temperature resistant insulating coating sprayed on the outside of the oxide layer. The aluminum alloy die-casting reduces weight, the oxide layer enhances corrosion resistance, and the insulating coating prevents leakage, making it suitable for high-humidity environments.

[0023] In this embodiment, both the upper end cover 3 and the lower end cover 5 have annular heat dissipation grooves 7 on their outer walls. The number of annular heat dissipation grooves 7 is 10 to 12, and they are arranged in an equally spaced array. The heat dissipation grooves increase the surface area and accelerate heat dissipation; the groove design reduces the amount of material used while ensuring strength.

[0024] In this embodiment, a wear-resistant bushing 8 is provided at the connection between the rotor connecting shaft 9 and the lower end cover 5, and the inner wall of the wear-resistant bushing 8 is provided with a spiral oil groove. The bushing reduces shaft-cover friction and wear, and the spiral oil groove achieves self-lubrication; the flexible contact reduces operating noise and improves the stability of the motor.

[0025] The implementation principle of this embodiment is as follows:

[0026] When the motor is powered on, the rotor connecting shaft 9 begins to rotate, driving the internal mechanical structure of the motor to work. At this time, the wear-resistant bushing 8 (with spiral oil grooves on the inner wall) on the lower end cover 5 begins to function, reducing friction between the rotor shaft and the end cover through the lubrication of the oil grooves, thereby reducing wear and noise.

[0027] During motor operation, heat is generated. At this time, the blade-type heat dissipation structure (composed of 8-12 arc-shaped metal blades 6) on the outer wall of the upper end cover 3 and the lower end cover 5 begins to rotate, driving airflow and forming forced heat dissipation. At the same time, the annular heat dissipation groove 7 on the outer wall of the end cover further increases the heat dissipation area, helping the heat to dissipate more quickly.

[0028] When installing the end cover, firstly, align the interlocking connecting part 1 on the side of the upper end cover 3 with the corresponding slot on the motor housing to ensure initial positioning; then, insert the positioning pin through the positioning pin hole 2 to ensure precise alignment between the end cover and the motor housing and prevent assembly misalignment; finally, use M4-M6 stainless steel bolts to fasten the three-layer structure of the upper end cover 3, the annular base 4, and the lower end cover 5 together to ensure the overall structure is stable and avoid loosening or vibration.

[0029] Thanks to its modular design, if a component (such as the wear-resistant bushing 8 or the heat dissipation fins) is damaged, it can be replaced individually without disassembling the entire motor. The spiral oil groove provides continuous lubrication during long-term operation, reducing maintenance frequency. A high-temperature resistant insulating coating and anodized layer protect the end caps from moisture, dust, or chemical corrosion, extending their service life.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A canned commutator motor end shield structure comprising an end shield body, characterized by The end cover body is composed of an upper end cover (3), an annular base (4) and a lower end cover (5). The upper end cover (3) and the lower end cover (5) are provided with radially distributed blade-type heat dissipation structures on the top outer wall. The upper end cover (3) is provided with an axially protruding interlocking connecting component (1) on the side. Multiple fixing bolts are evenly distributed at the connection between the upper end cover (3), the annular base (4) and the lower end cover (5). The fixing bolts are M4-M6 stainless steel bolts. The lower end cover (5) is provided with a rotor connecting shaft (9) at the center of the top outer wall.

2. A canned commutated pole motor end turn structure according to claim 1, wherein: The blade-type heat dissipation structure consists of 8-12 arc-shaped metal blades (6) arranged at equal intervals with an inclination angle of 15°-30°, and the thickness of the blades is 1 / 3-1 / 2 of the thickness of the top of the end cap body.

3. The inset mounted salient pole motor end turn structure of claim 1, wherein: The interlocking connecting component (1) is in the shape of a rectangular boss, with a positioning pin hole (2) of 3-5 mm in diameter at its center.

4. The inset mounted salient pole motor end turn structure of claim 1, wherein: The end cap body is made of ADC12 aluminum alloy by die casting, and the surface is anodized to form a 0.02mm thick oxide layer, and a high-temperature resistant insulating coating is sprayed on the outside of the oxide layer.

5. The inset mounted salient pole motor end turn structure of claim 1, wherein: The outer walls of the upper end cover (3) and the lower end cover (5) are provided with annular heat dissipation grooves (7), and the number of annular heat dissipation grooves (7) is 10 to 12 and arranged in an equally spaced array.

6. The inset mounted salient pole motor end turn structure of claim 1, wherein: A wear-resistant bushing (8) is provided at the connection between the rotor connecting shaft (9) and the lower end cover (5), and a spiral oil groove is provided on the inner wall of the wear-resistant bushing (8).

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