Plastic encapsulated motor and appliance

Abstract

The utility model provides a kind of plastic package motor and electrical equipment, plastic package motor includes plastic package stator, end cover and protective component, plastic package stator includes plastic package shell, plastic package shell has the open end and fixed end being oppositely arranged along its axial direction, annular boss is provided on open end;Annular groove that is matched with annular boss is provided on end cover, and end cover is covered on plastic package shell by annular groove;Protective component is sleeved on plastic package shell and is located between the position of mounting gap close to end cover and plastic package shell, protective component includes protective piece, at least part of protective piece is shielded on mounting gap, to be used for blocking liquid from fixed end to open end into mounting gap;Wherein, the inner diameter of protective piece gradually increases along the direction of fixed end to open end.The technical scheme of the utility model solves the technical problem that the effect of sealing motor by using the way of waterproofing of gluing in the prior art is poor.

Description

Technical Field

[0001] This utility model relates to the field of encapsulated motor technology, and more specifically, to an encapsulated motor and electrical equipment. Background Technology

[0002] Currently, electric motors are widely used in various fields, especially in equipment requiring top-ventilation, such as fans in household appliances and ventilation systems in industrial equipment. When an electric motor adopts a top-ventilation design, its rotor shaft is usually installed upwards, making the gap between the motor end cover and the motor body highly susceptible to moisture intrusion. Moisture entry can corrode internal motor components, such as the windings and bearings, severely affecting motor performance and shortening its lifespan. Typically, to prevent water ingress, the industry practice is to apply sealant or waterproof adhesive to areas prone to water damage, such as the junction of the end cover and the motor body.

[0003] However, while this approach can prevent moisture intrusion to some extent, it presents several problems. First, the adhesive application process is complex, requiring precise control of the amount and distribution of adhesive; otherwise, it may result in inadequate sealing or excessive adhesive affecting motor heat dissipation and operation. Second, the adhesive application operation is labor-intensive and difficult to automate, impacting production efficiency. Furthermore, the reliability of waterproof adhesives is affected by environmental factors such as temperature and humidity; prolonged use may lead to aging and cracking, resulting in seal failure. Therefore, existing waterproofing measures are insufficient in terms of ease of operation, stability and reliability of sealing effect, and reduction of labor intensity. Utility Model Content

[0004] The main purpose of this utility model is to provide a plastic-sealed motor and electrical equipment to solve the technical problem that the sealing effect of the motor by applying glue for waterproofing is poor in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a plastic-encapsulated motor is provided, comprising: a plastic-encapsulated stator including a plastic-encapsulated housing having an open end and a fixed end disposed opposite to each other along its axial direction, the open end being provided with an annular boss; an end cap having an annular groove that mates with the annular boss, the end cap being disposed on the plastic-encapsulated housing through the annular groove; and a protective member sleeved on the plastic-encapsulated housing and located near the mounting gap between the end cap and the plastic-encapsulated housing, the protective member including a protective element, at least a portion of which covers the mounting gap to prevent liquid flowing from the fixed end to the open end from flowing into the mounting gap; wherein the inner diameter of the protective element gradually increases along the direction from the fixed end to the open end.

[0006] Furthermore, the protective component has a first end and a second end arranged opposite to each other along its axial direction, the inner diameter of the first end being smaller than the inner diameter of the second end. The protective component also includes: a mounting component, which is annular and extends along the axial direction of the plastic-encapsulated shell. The mounting component is sleeved on the plastic-encapsulated shell, and the first end of the protective component is connected to the outer peripheral wall of the mounting component.

[0007] Furthermore, the encapsulated housing includes a first housing and a second housing, with an open end located at the end of the first housing away from the second housing, a fixed end located at the end of the second housing away from the first housing, and a mounting component sleeved on the first housing and in contact with the second housing; wherein, the diameter of the first housing is smaller than that of the second housing, and the inner diameter of the mounting component is smaller than or equal to the diameter of the first housing.

[0008] Furthermore, a limiting groove extending circumferentially along the first housing is provided on the outer peripheral wall of the first housing near the second housing, and the mounting component is embedded in the limiting groove to be connected in a way that fits the limiting groove; wherein, the diameter of the circle in which the bottom wall of the limiting groove extends along its extension direction is greater than or equal to the inner diameter of the mounting component.

[0009] Furthermore, an installation notch is provided on the open end, which is located on the outer circumferential surface of the annular boss. The encapsulated motor also includes a cable sheath located within the installation notch. The top of the cable sheath is provided with an installation part extending in an arc direction, so that when the end cover is placed on the annular boss, the installation part is embedded in the annular groove.

[0010] Furthermore, the encapsulated motor also includes multiple disassembly notches, which are spaced circumferentially along the outer peripheral wall of the encapsulated housing and near the annular boss.

[0011] Furthermore, the protective components are made of soft plastic materials.

[0012] Furthermore, there is a preset angle α between the protective component and the axial direction of the plastic-encapsulated shell, and the preset angle α satisfies: 0<a≤60°.

[0013] Furthermore, at least a portion of the inner diameter of the protective component is less than or equal to the outer diameter of the plastic-encapsulated housing.

[0014] According to another aspect of the present invention, an electrical device is provided, including the aforementioned encapsulated motor.

[0015] The present invention provides a plastic-encapsulated motor, comprising a plastic-encapsulated stator, an end cap, and a protective component. The plastic-encapsulated stator includes a plastic-encapsulated housing, which has an open end and a fixed end arranged opposite to each other along its axial direction. An annular boss is provided on the open end. An annular groove is provided on the end cap, which is connected to the annular boss. The end cap is fitted onto the plastic-encapsulated housing through the annular groove. The protective component is sleeved on the plastic-encapsulated housing and located near the mounting gap between the end cap and the plastic-encapsulated housing. The protective component includes a protective element, at least a portion of which covers the mounting gap to prevent liquid flowing from the fixed end to the open end from flowing into the mounting gap. The inner diameter of the protective element gradually increases from the fixed end to the open end.

[0016] The gradually increasing inner diameter of the protective component creates a ramp, allowing liquid to more easily slide outwards along the ramp when it encounters the component, rather than flowing into the motor through the installation gap between the end cap and the plastic casing. Compared to traditional adhesive methods, this design significantly improves the waterproof sealing effect, preventing damage to the electrical and mechanical components inside the motor from liquid corrosion, thereby improving the overall lifespan and reliability of the motor. Furthermore, this application solves the technical problem of poor sealing effect when using adhesive methods for motor waterproofing in existing technologies. Moreover, the fit design between the protective component and the plastic casing ensures that the protective component is not easily displaced during motor operation, maintaining stable and reliable waterproof sealing performance even under vibration or temperature changes. It also simplifies the assembly process and reduces maintenance costs. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 An exploded view of an embodiment of the encapsulated motor according to the present invention is shown;

[0019] Figure 2 A schematic diagram of the structure provided in an embodiment of the encapsulated motor according to the present invention is shown;

[0020] Figure 3 A schematic diagram of the structure of a plastic-encapsulated stator provided according to an embodiment of the plastic-encapsulated motor of the present invention is shown;

[0021] Figure 4 A schematic diagram of the structure of the protective component provided according to an embodiment of the encapsulated motor of the present invention is shown;

[0022] Figure 5 A schematic diagram of the end cap structure provided according to an embodiment of the encapsulated motor of the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 1. Plastic-encapsulated stator; 10. Plastic-encapsulated housing; 11. Annular boss; 12. First housing; 13. Second housing; 14. Limiting groove; 15. Mounting notch; 16. Outgoing cable sleeve; 17. Disassembly notch;

[0025] 2. End cap; 20. Annular groove;

[0026] 3. Protective components; 30. Protective parts; 31. Mounting parts. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To address the problem that the sealing effect of existing technologies using adhesive waterproofing to seal motors is poor, this application provides a plastic-sealed motor and electrical equipment.

[0029] Please refer to Figures 1 to 5 As shown, one aspect of the technical solution of this utility model provides a plastic-encapsulated motor, including a plastic-encapsulated stator 1, an end cap 2, and a protective component 3. The plastic-encapsulated stator 1 includes a plastic-encapsulated housing 10, which has an open end and a fixed end arranged opposite to each other along its axial direction. An annular boss 11 is provided on the open end. An annular groove 20 is provided on the end cap 2, which is connected to the annular boss 11. The end cap 2 covers the plastic-encapsulated housing 10 through the annular groove 20. The protective component 3 is sleeved on the plastic-encapsulated housing 10 and located near the installation gap between the end cap 2 and the plastic-encapsulated housing 10. The protective component 3 includes a protective member 30, at least a portion of which covers the installation gap to prevent liquid flowing from the fixed end to the open end from flowing into the installation gap. The inner diameter of the protective member 30 gradually increases along the direction from the fixed end to the open end.

[0030] The gradually increasing inner diameter of the protective component 30 creates a ramp, allowing liquid to more easily slide outwards along the ramp when it encounters the protective component 30, rather than flowing into the motor through the installation gap between the end cap 2 and the plastic-encased housing 10. Compared to traditional adhesive methods, this design significantly improves the waterproof sealing effect, preventing damage to the electrical and mechanical components inside the motor due to liquid corrosion, thereby improving the overall lifespan and reliability of the motor. Furthermore, this application solves the technical problem of poor sealing effect when using adhesive waterproofing methods for motors in the prior art. Moreover, the fit design between the protective component 30 and the plastic-encased housing 10 ensures that the protective component 30 is not easily displaced during motor operation, maintaining stable and reliable waterproof sealing performance even under vibration or temperature changes. It also simplifies the assembly process and reduces maintenance costs.

[0031] In this embodiment, the protective member 30 has a first end and a second end arranged opposite to each other along its axial direction. The inner diameter of the first end is smaller than the inner diameter of the second end. The protective member 30 also includes a mounting member 31, which is annular and extends along the axial direction of the plastic-encapsulated shell 10. The mounting member 31 is sleeved on the plastic-encapsulated shell 10, and the first end of the protective member 30 is connected to the outer peripheral wall of the mounting member 31. The mounting member 31 and the protective member 30 are integrally formed.

[0032] The aforementioned design, with the inner diameter of the protective component 30 gradually increasing from the first end to the second end, effectively guides liquid flowing from the fixed end of the plastic-encapsulated housing 10 to the open end to the outside, preventing it from easily entering the installation gap between the plastic-encapsulated housing 10 and the end cap 2. This structure is similar to a slope or a flow channel, ensuring that even if liquid comes into contact with the protective component 30, it will drain out along the larger inner diameter, reducing the risk of liquid penetration.

[0033] The design of the mounting component 31 ensures the stable installation of the protective component 3 on the encapsulated motor. The annular cylindrical mounting component 31 can move along the axial direction of the encapsulated housing 10 to fit onto the encapsulated housing 10, providing a base for fixing the protective component 30 so that the protective component 30 will not be displaced due to vibration or other external forces during motor operation, maintaining the continuity and effectiveness of its waterproof function.

[0034] In this embodiment, the plastic-encapsulated shell 10 includes a first shell 12 and a second shell 13. The open end is located at the end of the first shell 12 away from the second shell 13, and the fixed end is located at the end of the second shell 13 away from the first shell 12. The mounting member 31 is sleeved on the first shell 12 and contacts the second shell 13. The diameter of the first shell 12 is smaller than that of the second shell 13, and the inner diameter of the mounting member 31 is smaller than or equal to the diameter of the first shell 12.

[0035] Thus, since the diameter of the first housing 12 is smaller than that of the second housing 13, and the inner diameter of the mounting member 31 is smaller than or equal to the diameter of the first housing 12, there is a tight interference fit between the mounting member 31 and the first housing 12. This improves the stability of the mounting member 31 on the first housing 12. During motor operation, even if vibration occurs, this tight fit ensures that the mounting member 31 and the protective member 30 will not easily shift, maintaining a good sealing condition.

[0036] In this embodiment, a limiting groove 14 extending circumferentially along the first housing 12 is provided on the outer peripheral wall of the first housing 12 near the second housing 13. The mounting member 31 is embedded in the limiting groove 14 to be connected in a suitable manner with the limiting groove 14. The diameter of the circle of the bottom wall of the limiting groove 14 along its extension direction is greater than or equal to the inner diameter of the mounting member 31.

[0037] By embedding the mounting component 31 into the limiting groove 14 of the first housing 12, the stability of the protective component 3 on the plastic-encapsulated housing 10 can be significantly improved. The design of the limiting groove 14 ensures the accurate position of the mounting component 31, avoiding displacement of the mounting component 31 that may be caused by vibration during motor operation, and ensuring the stability and waterproof performance of the protective component 30 throughout the entire motor operation. Furthermore, the matching design between the limiting groove 14 and the mounting component 31 simplifies the assembly process. During assembly, simply embedding the mounting component 31 correctly into the limiting groove 14 achieves rapid positioning and installation of the protective component 30, without the need for additional fixing methods, saving assembly time and costs.

[0038] The bottom wall diameter of the limiting groove 14 is greater than or equal to the inner diameter of the mounting part 31. This means that when the mounting part 31 is embedded in the limiting groove 14, an interference fit is formed between them. This helps to enhance the sealing effect between the mounting part 31 and the plastic-encased housing 10, preventing external liquids from entering the motor through gaps and improving the motor's waterproof performance. Furthermore, the design of the limiting groove 14 makes the disassembly of the mounting part 31 relatively easy; it can be removed from the limiting groove 14 simply by reversing the operation, facilitating motor maintenance and component replacement. This design reduces maintenance costs while improving the maintainability of the motor.

[0039] like Figure 3 As shown, an installation notch 15 is provided on the open end. The installation notch 15 is located on the outer peripheral surface of the annular boss 11. The encapsulated motor also includes a cable sheath 16, which is located inside the installation notch 15. The top of the cable sheath 16 is provided with an installation part that extends in an arc direction, so that when the end cover 2 is placed on the annular boss 11, the installation part is embedded in the annular groove 20.

[0040] By providing a cable exit sleeve 16 at the open end, the cable exit process of the motor can be simplified. The cable exit sleeve 16 not only protects the cable from mechanical damage but also reduces cable vibration during motor operation, extending cable life. Furthermore, the precise fit between the mounting portion at the top of the cable exit sleeve 16 and the annular groove 20 of the end cover 2 improves the accuracy of motor assembly. This design ensures the accurate positioning of the cable exit sleeve 16 on the encapsulated motor, avoiding potential seal failure or other problems caused by improper positioning.

[0041] The interlocking design between the lead-out sleeve 16, the encapsulated stator 1, and the end cover 2 reduces assembly difficulty. The assembler only needs to correctly place the lead-out sleeve 16 into the mounting notch 15 and then cover it with the end cover 2 to achieve the positioning and sealing of the lead-out sleeve 16, simplifying the motor assembly process.

[0042] The assembly process is as follows: First, place the rotor assembly into the cavity in the middle of the plastic-encapsulated stator 1. Then, place the lead wire sheath 16 into the installation notch 15. Next, place the arc-shaped groove of the end cover 2 into the annular boss 11 on the top of the plastic-encapsulated stator 1 and press it with a pressure device. Finally, place the protective component 3 above the installation gap at the junction of the end cover 2 and the plastic-encapsulated shell 10 to form a waterproof structure.

[0043] In this embodiment, the encapsulated motor also includes a plurality of disassembly notches 17, which are arranged at intervals along the circumference of the encapsulated stator 1 on the outer peripheral wall of the encapsulated housing 10 and near the annular boss 11.

[0044] Thus, the design of the disassembly notch 17 provides a convenient entry point for disassembling the end cover 2, making it easier to separate the end cover 2 from the plastic housing 10 when maintenance or replacement of internal components, such as the encapsulated stator 1 and rotor assembly, is required. Operators can apply force through these disassembly notches 17 to easily disassemble the end cover 2, avoiding potential damage to the motor structure caused by using traditional tools. The multiple spaced disassembly notches 17 ensure a uniform distribution of force points, resulting in a more even distribution of force during disassembly and reducing the risk of component damage due to excessive localized force. This improves maintenance efficiency and reduces the additional maintenance costs that may result from improper disassembly.

[0045] During motor assembly, the disassembly notch 17 can also serve as a reference point for positioning the end cover 2, ensuring the correct installation of the end cover 2 on the plastic-encased housing 10. When placing the end cover 2 on the annular boss 11, the operator can use the disassembly notch 17 to calibrate the position of the end cover 2, avoiding any impact on the motor's sealing performance due to improper assembly.

[0046] In this embodiment, the protective component 3 is made of soft plastic material.

[0047] Soft plastic materials, such as silicone, TPU (thermoplastic polyurethane), and EPDM (ethylene propylene diene monomer rubber), possess excellent elasticity. This elasticity helps the protective component 3 better fill irregular gaps during installation, forming a tight seal that effectively prevents dust, moisture, or liquids from entering the motor, thus improving the motor's protection level. Furthermore, soft plastic materials typically have good weather resistance and anti-aging properties. This means they can maintain their performance for extended periods in various harsh environments, reducing material performance degradation caused by environmental factors and extending the service life of the protective component 3 and even the entire motor. Simultaneously, the flexibility of soft materials makes them easier to compress and deform during assembly, simplifying the assembly process. When maintenance or replacement is required, the soft-material protective component 3 is also easy to disassemble, reducing maintenance costs and time.

[0048] In this embodiment, there is a preset angle α between the protective component 30 and the axial direction of the plastic-encapsulated shell 10, and the preset angle α satisfies: 0<a≤60°.

[0049] When the protective component 30 has an angle of inclination with the axial direction, its waterproof performance can be enhanced. In particular, when the preset included angle α is less than or equal to 60°, the inclined surface can effectively guide the liquid flow away, reduce the accumulation of liquid on the top of the motor, and thus effectively prevent moisture from penetrating into the motor through the installation gap between the end cover 2 and the plastic-encased housing 10, thereby improving the waterproof rating of the motor.

[0050] In this embodiment, at least a portion of the inner diameter of the protective component 3 is less than or equal to the outer diameter of the plastic-encapsulated housing 10.

[0051] When the inner diameter of the protective component 3 is smaller than the outer diameter of the plastic-encapsulated housing 10, an interference fit will be formed during assembly. This means that the protective component 3 will be subjected to a certain amount of compression when installed on the plastic-encapsulated housing 10, thereby forming a tight seal between their contact surfaces. This seal helps prevent dust, moisture, or other external contaminants from entering the motor through the installation gap between the end cap 2 and the plastic-encapsulated housing 10, improving the motor's protection level. Furthermore, through the interference fit or tight-fit design, the protective component 3 and the plastic-encapsulated housing 10 can be physically fixed, enhancing the stability of the protective component 3 and preventing it from shifting or loosening when the motor is running or subjected to external vibrations, ensuring a tight connection between motor components.

[0052] According to another aspect of the present invention, an electrical device is provided, including the aforementioned encapsulated motor.

[0053] The use of encapsulated motors with enhanced sealing and waterproofing capabilities improves the overall reliability of electrical equipment. As a core component of electrical equipment, the motor's performance directly impacts the equipment's stability and lifespan. Enhanced waterproofing means the motor can maintain optimal operation in harsher environments, reducing the likelihood of malfunctions. Furthermore, the durability and reduced maintenance requirements of encapsulated motors directly translate into a longer lifespan for the electrical equipment. Motors are a common source of wear in electrical equipment; increased durability significantly extends the equipment's service life and reduces the frequency of major overhauls and replacements.

[0054] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0055] The encapsulated motor includes an encapsulated stator 1, an end cap 2, and a protective component 3. The encapsulated stator 1 includes an encapsulated housing 10, which has an open end and a fixed end arranged opposite to each other along its axial direction. An annular boss 11 is provided on the open end. The end cap 2 is provided with an annular groove 20 that mates with the annular boss 11. The end cap 2 covers the encapsulated housing 10 through the annular groove 20. The protective component 3 is sleeved on the encapsulated housing 10 and located near the mounting gap between the end cap 2 and the encapsulated housing 10. The protective component 3 includes a protective element 30, at least a portion of which covers the mounting gap to prevent liquid flowing from the fixed end to the open end from flowing into the mounting gap. The inner diameter of the protective element 30 gradually increases from the fixed end to the open end.

[0056] The gradually increasing inner diameter of the protective component 30 creates a ramp, allowing liquid to more easily slide outwards along the ramp when it encounters the protective component 30, rather than flowing into the motor through the installation gap between the end cap 2 and the plastic-encased housing 10. Compared to traditional adhesive methods, this design significantly improves the waterproof sealing effect, preventing damage to the electrical and mechanical components inside the motor due to liquid corrosion, thereby improving the overall lifespan and reliability of the motor. Furthermore, this application solves the technical problem of poor sealing effect when using adhesive waterproofing methods for motors in the prior art. Moreover, the fit design between the protective component 30 and the plastic-encased housing 10 ensures that the protective component 30 is not easily displaced during motor operation, maintaining stable and reliable waterproof sealing performance even under vibration or temperature changes. It also simplifies the assembly process and reduces maintenance costs.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0059] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0060] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0061] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plastic-encapsulated motor, characterized in that, include: The encapsulated stator (1) includes an encapsulated housing (10), the encapsulated housing (10) having an open end and a fixed end disposed opposite to each other along its axial direction, and an annular boss (11) is provided on the open end. End cap (2), the end cap (2) is provided with an annular groove (20) that is connected to the annular boss (11), the end cap (2) is covered on the plastic-sealed shell (10) through the annular groove (20); A protective component (3) is fitted onto a plastic-encapsulated shell (10) and located near the mounting gap between the end cap (2) and the plastic-encapsulated shell (10). The protective component (3) includes a protective element (30), at least a portion of which covers the mounting gap to prevent liquid flowing from the fixed end to the open end from flowing into the mounting gap. The inner diameter of the protective member (30) gradually increases along the direction from the fixed end to the open end.

2. The encapsulated motor according to claim 1, characterized in that, The protective component (30) has a first end and a second end disposed opposite to each other along its axial direction, the inner diameter of the first end being smaller than the inner diameter of the second end, and the protective component (3) further includes: The mounting component (31) is an annular cylindrical shape and extends along the axial direction of the plastic-encapsulated shell (10). The mounting component (31) is sleeved on the plastic-encapsulated shell (10), and the first end of the protective component (30) is connected to the outer peripheral wall of the mounting component (31).

3. The encapsulated motor according to claim 2, characterized in that, The encapsulated housing (10) includes a first housing (12) and a second housing (13). The open end is located at the end of the first housing (12) away from the second housing (13), and the fixed end is located at the end of the second housing (13) away from the first housing (12). The mounting part (31) is sleeved on the first housing (12) and contacts the second housing (13). Wherein, the diameter of the first housing (12) is smaller than that of the second housing (13), and the inner diameter of the mounting member (31) is smaller than or equal to the diameter of the first housing (12).

4. The encapsulated motor according to claim 3, characterized in that, A limiting groove (14) extending circumferentially along the first housing (12) is provided on the outer peripheral wall of the first housing (12) near the second housing (13). The mounting member (31) is embedded in the limiting groove (14) to be connected in a way that fits the limiting groove (14). Wherein, the diameter of the circle in which the bottom wall of the limiting groove (14) extends along its extension direction is greater than or equal to the inner diameter of the mounting part (31).

5. The encapsulated motor according to claim 1, characterized in that, An installation notch (15) is provided on the open end, the installation notch (15) is provided on the outer peripheral surface of the annular boss (11), and the encapsulated motor further includes: The cable outlet sleeve (16) is provided in the mounting notch (15). The top of the cable outlet sleeve (16) is provided with a mounting part extending in an arc direction so that when the end cap (2) is placed on the annular boss (11), the mounting part is embedded in the annular groove (20).

6. The encapsulated motor according to claim 1, characterized in that, The encapsulated motor also includes: Multiple disassembly notches (17) are provided at intervals along the circumference of the encapsulated stator (1) on the outer peripheral wall of the encapsulated housing (10) and near the annular boss (11).

7. The encapsulated motor according to any one of claims 1 to 4, characterized in that, The protective component (3) is made of soft plastic material.

8. The encapsulated motor according to any one of claims 1 to 4, characterized in that, The protective component (30) and the plastic-encased shell (10) have a preset included angle α, which satisfies: 0 < α ≤ 60°.

9. The encapsulated motor according to any one of claims 1 to 4, characterized in that, The inner diameter of at least a portion of the protective component (3) is less than or equal to the outer diameter of the plastic-encapsulated shell (10).

10. An electrical device comprising a plastic-encapsulated motor, characterized in that, The encapsulated motor is the encapsulated motor according to any one of claims 1 to 9.

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