Outer rotor motor

Abstract

The present application relates to an outer rotor motor, belonging to the field of motor technology. The outer rotor motor comprises: a stator assembly including a base, a stator arranged on the base, and a waterproof baffle assembly, the waterproof baffle assembly being arranged around the stator; a rotor assembly including a rotor shaft and a rotor housing, the rotor shaft being rotatably arranged on the base, the rotor shaft being inserted into the stator, the rotor housing being fixedly mounted on the rotor shaft, a rotor baffle being provided at the bottom of the rotor housing, the rotor baffle being arranged opposite to the waterproof baffle assembly; a waterproof ring being arranged circumferentially around the waterproof baffle assembly, the end of the waterproof ring close to the rotor shaft being connected to the rotor baffle, the waterproof ring having a stationary state and a rotating state. In the stationary state, the end of the waterproof ring away from the rotor shaft naturally hangs down and overlaps the waterproof baffle assembly, and in the rotating state, the end of the waterproof ring away from the rotor shaft is spaced apart from the waterproof baffle assembly. The outer rotor motor according to the present invention can play a waterproof role when stationary and meet heat dissipation requirements when rotating.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to an outer rotor motor. Background Art

[0002] Unlike conventional motors, an outer rotor motor has an external (rotating) rotor and an internal (fixed) stator, connected by a rotor shaft and bearings. Due to the larger rotating components and the need for relative motion between the rotor and stator, conventional outer rotor motors have the following disadvantages: The stator and rotor cannot be statically sealed, and the stator windings generate significant heat during operation. Therefore, the motor's heat dissipation capacity must be ensured, requiring internal and external circulating air to remove heat and reduce temperature rise. Therefore, a certain gap must be maintained between the stator end face and the rotor bottom during operation to remove heat. While operating, the motor generally meets IPX5 waterproofing requirements (water spraying at any angle without water intrusion). However, when stationary, it fails to meet the IPX5 (international industrial waterproofing grade 5) test requirements, making it unsuitable for use in high-waterproof applications. This significantly limits its scope of use and poses a safety hazard of short-circuiting due to water intrusion.

[0003] The specific experiments are as follows:

[0004] 1. When the motor is stationary (not working), a small amount of water may enter the motor if it is exposed to water splashing from any direction (IPX4).

[0005] 2. When the motor is stationary (not working), a large amount of water will enter the motor in an environment where water is sprayed (IPX5).

[0006] 3. When the motor is running, it will not get wet even if it is exposed to water splashing from any direction (IPX4).

[0007] 4. When the motor is running, a small amount of water may enter the motor in a water spray environment (IPX5), but this will not endanger the safety performance of the motor.

[0008] In summary, when the motor is running, the strong centrifugal force and negative pressure generated by the rotor casing prevent water from entering the motor, meeting the IPX5 waterproof test requirements. However, when the motor is stationary, the presence of large gaps allows water to enter the motor during the water spray test, failing the IPX5 test requirements. Even with a traditional design where the gap between the stator and rotor casing is very small, trace amounts of water can still enter. Furthermore, a small gap reduces the motor's heat dissipation capacity, requiring an increase in stator winding copper to meet temperature rise requirements, increasing production costs.

[0009] Therefore, there is an urgent need for an outer rotor motor that can meet waterproof requirements when stationary and heat dissipation requirements when rotating. Summary of the Invention

[0010] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an outer rotor motor that, when stationary, can seal the passage between the waterproof baffle assembly and the rotor baffle with a waterproof ring, thereby providing waterproof protection. Furthermore, when rotating, centrifugal force causes the end of the waterproof ring, which is away from the rotor shaft, to rise, opening the passage between the waterproof baffle assembly and the rotor baffle, thereby dissipating heat.

[0011] According to the present invention, the outer rotor motor includes: a stator assembly, the stator assembly includes a base, a stator arranged on the base and a waterproof baffle group, the waterproof baffle group is arranged around the stator; a rotor assembly, the rotor assembly includes a rotor shaft and a rotor housing, the rotor shaft is rotatably arranged on the base, the rotor shaft is passed through the stator, the rotor housing is fixed on the rotor shaft, a rotor baffle is provided at the bottom of the rotor housing, the rotor baffle and the waterproof baffle group are arranged opposite to each other to form a heat dissipation channel; a waterproof ring, the waterproof ring is arranged circumferentially around the waterproof baffle group, one end of the waterproof ring close to the rotor shaft is connected to the rotor baffle, the waterproof ring has a stationary state and a rotating state, in the stationary state, the end of the waterproof ring away from the rotor shaft naturally hangs down and overlaps the waterproof baffle group, in the rotating state, the end of the waterproof ring away from the rotor shaft is spaced from the waterproof baffle group.

[0012] According to the outer rotor motor of the present invention, when the rotor shaft of the outer rotor motor is stationary, the waterproof ring naturally hangs down and overlaps the waterproof baffle group, closing the channel between the waterproof baffle group and the rotor baffle, preventing violent water spray from entering the interior of the outer rotor motor. When the rotor shaft rotates, the waterproof ring rotates with the rotor shaft. Due to the action of centrifugal force, the end of the waterproof ring away from the rotor shaft flies up and separates from the waterproof baffle group, so that the channel between the waterproof baffle group and the rotor baffle is opened, which facilitates heat dissipation. In this way, both the waterproof requirement and the heat dissipation requirement of the outer rotor motor can be met.

[0013] According to the outer rotor motor of the present invention, at least one counterweight is provided on the end of the waterproof ring away from the rotor shaft, and the counterweight avoids the waterproof baffle group, or a counterweight strip is provided along the circumference of the end of the waterproof ring away from the rotor shaft, and the counterweight strip avoids the waterproof baffle group.

[0014] Optionally, the counterweight block or counterweight bar is located on a side of the waterproof ring away from the waterproof baffle group.

[0015] Optionally, the waterproof ring further includes a rubber ring and a waterproof cloth fixed to the rubber ring; a limiting groove extending along the circumference of the rotor baffle is provided on the rotor baffle, and the rubber ring is clamped in the limiting groove.

[0016] Optionally, the rotor baffle defines a mounting groove, the limiting groove is located on the top wall of the mounting groove, the waterproof ring is located in the mounting groove, and the radial width of the waterproof ring is less than or equal to the distance between the two side walls of the mounting groove.

[0017] Optionally, the mounting groove includes a first side wall close to the rotor shaft and a second side wall away from the rotor shaft, and an end of the second side wall close to the base is provided with an inclined portion inclined toward the rotor shaft.

[0018] Optionally, the waterproof baffle group includes a first baffle, a second baffle and a third baffle. The first baffle, the second baffle and the third baffle are arranged in sequence along the radial direction of the base and gradually away from the rotor shaft. The distance between the lower edge of the first side wall and the base is smaller than the distance between the upper edge of the first baffle and the base. Along the radial direction of the base, the first side wall is spaced from the first baffle.

[0019] Optionally, along the radial direction of the base, the distance between the second side wall and the third baffle is greater than the distance between the second baffle and the third baffle.

[0020] Optionally, along the radial direction of the base and gradually away from the rotor shaft, the heights of the first baffle, the second baffle and the third baffle decrease in sequence.

[0021] According to the outer rotor motor of the present invention, the waterproof baffle group includes a plurality of baffles, and the ends of the baffles close to the waterproof ring are arc-shaped.

[0022] According to the outer rotor motor of the present invention, at least one first adsorption member is provided on the base along the circumference of the waterproof baffle group, and at least one second adsorption member is provided on the side of the waterproof ring facing the base. The first adsorption member and the second adsorption member are arranged opposite to each other, and one of the first adsorption member and the second adsorption member is a strong magnet, and the other is made of ferromagnetic metal that can be adsorbed by the strong magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 is a perspective view of an outer rotor motor according to an embodiment of the present invention;

[0026] Figure 2 is an exploded view of an outer rotor motor according to an embodiment of the present invention;

[0027] Figure 3 is a cross-sectional view of an outer rotor motor according to an embodiment of the present invention;

[0028] Figure 4for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 3D is a perspective view of a waterproof ring of an outer rotor motor according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] Outer rotor motor 1, stator assembly 10, base 11, stator 12, frame 122, waterproof baffle group 13, first baffle 132, second baffle 134, third baffle 136, rotor assembly 20, rotor shaft 21, bearing 212, rotor housing 22, rotor baffle 23, first side wall 232, second side wall 234, inclined portion 2342, waterproof ring 30, counterweight block 31, rubber ring 32, waterproof cloth 33. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] like Figure 1 and Figure 2 As shown, the outer rotor motor 1 according to an embodiment of the present invention includes: a stator assembly 10 , a rotor assembly 20 and a waterproof ring 30 .

[0034] Specifically, the stator assembly 10 includes a base 11, a stator 12 provided on the base 11, and a waterproof baffle group 13, and the waterproof baffle group 13 is arranged around the stator 12; the rotor assembly 20 includes a rotor shaft 21 and a rotor housing 22, the rotor shaft 21 is rotatably provided on the base 11, the rotor shaft 21 is passed through the stator 12, the rotor housing 22 is fixed on the rotor shaft 21, and a rotor baffle 23 is provided at the bottom of the rotor housing 22, and the rotor baffle 23 is arranged opposite to the waterproof baffle group 13 to form a heat dissipation channel; the waterproof ring 30 is arranged around the circumference of the waterproof baffle group 13, and the end of the waterproof ring 30 close to the rotor shaft 21 is connected to the rotor baffle 23, and the waterproof ring 30 has a stationary state and a rotating state, such as Figure 3 and Figure 4 As shown, in the stationary state, the end of the waterproof ring 30 away from the rotor shaft 21 naturally hangs down and overlaps the waterproof baffle assembly 13. In the rotating state, the end of the waterproof ring 30 away from the rotor shaft 21 is separated from the waterproof baffle assembly 13. The rotor housing 22 is provided with a magnetic ring on the inner side facing the rotor shaft 21. The rotor housing 22 defines an accommodating cavity, in which the rotor shaft 21 and the stator 12 are both located.

[0035] To elaborate, the rotor baffle 23 and the waterproof baffle group 13 are arranged relative to each other to define a heat dissipation channel. A skeleton 122 is provided at the bottom of the stator 12 and is connected to the base 11. At least one bearing 212 is provided on the rotor shaft 21, and the stator 12 is provided on the outer sleeve of the bearing 212. The waterproof ring 30 is connected to the rotor baffle 23. The rotor shaft 21 is rotatably provided on the base 11. The rotation of the rotor shaft 21 drives the rotor housing 22 to rotate. The rotation of the rotor housing 22 drives the rotor baffle 23 to rotate. The rotation of the rotor baffle 23 drives the waterproof ring 30 to rotate. When the waterproof ring 30 rotates, the end of the waterproof ring 30 away from the rotor shaft 21 flies up due to the action of centrifugal force and is separated from the waterproof baffle group 13, thereby opening the heat dissipation channel of the waterproof baffle, and the heat generated in the accommodating cavity can be dissipated through the heat dissipation channel. When the waterproof ring 30 is in a stationary state, the end of the waterproof ring 30 away from the rotor shaft 21 naturally hangs down and overlaps the waterproof baffle group 13, closing the heat dissipation channel, thereby preventing violent water spraying from entering the outer rotor motor 1.

[0036] Since the waterproof ring 30 can hang down naturally when it is stationary, and can fly up due to the centrifugal force when it rotates, the waterproof ring 30 is more likely to bend and deform.

[0037] According to the outer rotor motor 1 of the embodiment of the present invention, when the rotor shaft 21 of the outer rotor motor 1 is in a stationary state, the waterproof ring 30 naturally hangs down and overlaps the waterproof baffle group 13, closing the channel between the waterproof baffle group 13 and the rotor baffle 23 to prevent violent water spraying from entering the interior of the outer rotor motor 1. When the rotor shaft 21 rotates, the waterproof ring 30 rotates with the rotor shaft 21. Due to the action of centrifugal force, the end of the waterproof ring 30 away from the rotor shaft 21 flies up and separates from the waterproof baffle group 13, so that the channel between the waterproof baffle group 13 and the rotor baffle 23 is opened, which facilitates heat dissipation. In this way, both the waterproof requirements of the outer rotor motor 1 and the heat dissipation requirements of the outer rotor motor 1 can be met.

[0038] like Figure 5 As shown, according to an embodiment of the present invention, an outer rotor motor 1 is provided with at least one counterweight 31 on the end of the waterproof ring 30 away from the rotor shaft 21. The counterweight 31 avoids the waterproof baffle assembly 13. The provision of the counterweight 31 allows gravity to cause the waterproof ring 30 to bend and deform more easily when stationary, allowing it to naturally droop and overlap the waterproof baffle assembly 13, thereby better sealing the heat dissipation channel and preventing the waterproof ring 30 from drifting away from the waterproof baffle assembly 13. Furthermore, the counterweight 31 avoids the waterproof baffle assembly 13, preventing a gap from forming at the junction between the waterproof ring 30 and the waterproof baffle assembly 13, which could affect the waterproofing effect when stationary.

[0039] Preferably, a plurality of counterweights 31 evenly distributed along the circumference of the waterproof ring 30 are provided at one end away from the rotor shaft 21 .

[0040] In the outer rotor motor 1 according to an embodiment of the present invention, a counterweight strip is provided along the circumference of the waterproof ring 30 at the end away from the rotor shaft 21. The counterweight strip avoids the waterproof baffle assembly 13. The provision of the counterweight strip allows gravity to cause the waterproof ring 30 to bend and deform more easily when stationary, allowing it to naturally drape over the waterproof baffle assembly 13, thereby better sealing the heat dissipation channel and preventing the waterproof ring 30 from drifting away from the waterproof baffle assembly 13. Furthermore, the counterweight strip avoids the waterproof baffle assembly 13, preventing a gap from forming at the junction between the waterproof ring 30 and the waterproof baffle assembly 13, which could affect the waterproofing effect when stationary.

[0041] In some embodiments, the counterweight block 31 or counterweight bar is located on the side of the waterproof ring 30 facing the waterproof baffle group 13 and is projected on the base 11 . The projection of the counterweight block 31 or counterweight bar is spaced from the projection of the waterproof baffle group 13 .

[0042] like Figure 4 As shown, in some embodiments, the counterweight 31 or counterweight strip is located on the side of the waterproof ring 30 away from the waterproof baffle assembly 13. This prevents the counterweight 31 or counterweight strip from interfering with the overlap between the waterproof ring 30 and the waterproof baffle assembly 13 when the waterproof ring 30 is not fully unfolded or wrinkles when it is naturally hanging. At the same time, the structural arrangement is reasonable, and the counterweight 31 or counterweight strip can be installed in a limited space. When projected on the base 11, the projection of the counterweight 31 or counterweight strip and the projection of the waterproof baffle assembly 13 may partially overlap or not overlap.

[0043] like Figure 5 As shown, in some embodiments, the waterproof ring 30 further includes a rubber ring 32 and a waterproof cloth 33 secured to the rubber ring 32. The rotor baffle 23 is provided with a retaining groove extending along the circumference of the rotor baffle 23, and the rubber ring 32 is snapped into the retaining groove. The rubber ring 32 and the retaining groove form an interference fit. In some embodiments, the counterweight 31 or counterweight strip is affixed to the waterproof cloth 33. In some embodiments, the counterweight 31 or counterweight strip has through-holes formed therein, through which sewing thread is passed to sew the counterweight 31 or counterweight strip to the waterproof cloth 33. In some embodiments, the waterproof cloth 33 is provided with a sewn pocket into which the counterweight 31 or counterweight strip is placed for securement.

[0044] In some embodiments, the rotor baffle 23 defines a mounting slot, with a retaining groove located on the top wall of the mounting slot. The waterproof ring 30 is positioned within the mounting slot. The radial width of the waterproof ring 30 is less than or equal to the distance between the two side walls of the mounting slot and greater than the radial width of the waterproof baffle assembly 13. This protects the waterproof ring 30 through the mounting slot, preventing other components from interfering with its natural drooping when the device is stationary.

[0045] According to the outer rotor motor 1 of the present invention, at least one first adsorption member is provided on the base 11 along the circumference of the waterproof baffle group 13, and at least one second adsorption member is provided on the side of the waterproof ring 30 facing the base 11. The first adsorption member and the second adsorption member are arranged opposite to each other, and one of the first adsorption member and the second adsorption member is a strong magnet, and the other is made of ferromagnetic metal that can be adsorbed by the strong magnet.

[0046] In some embodiments, the first attracting member is a strong magnet, and the second attracting member is made of a ferromagnetic metal that can be attracted by the strong magnet. In some embodiments, the first attracting member is made of a ferromagnetic metal that can be attracted by the strong magnet, and the second attracting member is a strong magnet. Ferromagnetic metals that can be attracted by magnets include iron, cobalt, nickel, their alloys, and ferrites.

[0047] In some embodiments, the mounting slot includes a first sidewall proximal to the rotor shaft 21 and a second sidewall distal to the rotor shaft 21. The second sidewall, proximal to the base 11, has an inclined portion disposed toward the rotor shaft 21. This provides better waterproofing, preventing water from entering the outer rotor motor 1 through the heat dissipation channel.

[0048] like Figure 4 As shown, in some embodiments, the waterproof baffle assembly 13 includes a first baffle 132, a second baffle 134, and a third baffle 136. The first baffle 132, the second baffle 134, and the third baffle 136 are arranged in sequence along the radial direction of the base 11 and gradually away from the rotor shaft 21. The distance L1 between the lower edge of the first sidewall and the base 11 is less than the distance L2 between the upper edge of the first baffle 132 and the base 11. The first sidewall is spaced apart from the first baffle 132 along the radial direction of the base 11. This arrangement allows the first sidewall to be spaced apart from the first baffle 132, allowing heat dissipation during rotation, while also preventing water from entering the heat dissipation channel, thereby blocking water flow.

[0049] In some embodiments, along the radial direction of the base 11, the distance between the second sidewall and the third baffle 136 is greater than the distance between the second baffle 134 and the third baffle 136. This arrangement allows for sufficient space to accommodate the waterproof ring 30, ensuring that the size of the waterproof ring 30 is sufficient to completely block the heat dissipation channel when naturally drooping, and increasing the contact area between the waterproof ring 30 and the waterproof baffle assembly 13 when stationary.

[0050] like Figure 4 As shown, in some embodiments, along the radial direction of the base 11 and gradually away from the rotor shaft 21, the heights of the first baffle 132, the second baffle 134 and the third baffle 136 decrease successively, so that when the outer rotor motor 1 is running, the air flow is easier to circulate and the heat dissipation capacity is better.

[0051] In some embodiments, along the radial direction of the base 11 , the distance between the first baffle 132 and the second baffle 134 is equal to the distance between the second baffle 134 and the third baffle 136 .

[0052] like Figure 4 As shown, according to an embodiment of the present invention, the outer rotor motor 1 includes a plurality of baffles in the waterproof baffle assembly 13. The ends of the baffles near the waterproof ring 30 are arc-shaped. In other words, the ends of the first baffle 132, the second baffle 134, and the third baffle 136 near the waterproof ring 30 are arc-shaped. Because the waterproof ring 30 is in a curved and deformed state when it is naturally hanging, this arrangement can increase the contact area between the waterproof ring 30 and the baffles, thereby achieving a better waterproof effect.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0054] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0055] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

Claims

1. An outer rotor motor, characterized in that: include: A stator assembly, the stator assembly comprising a base, a stator disposed on the base, and a waterproof baffle assembly, wherein the waterproof baffle assembly is disposed around the stator; a rotor assembly, the rotor assembly comprising a rotor shaft and a rotor housing, the rotor shaft being rotatably disposed on the base and passing through the stator, the rotor housing being fixedly mounted on the rotor shaft, a rotor baffle being disposed at the bottom of the rotor housing, the rotor baffle being disposed opposite the waterproof baffle assembly to form a heat dissipation channel; A deformable waterproof ring is arranged circumferentially around the waterproof baffle group, and one end of the waterproof ring close to the rotor shaft is connected to the rotor baffle. The waterproof ring has a stationary state and a rotating state. In the stationary state, the end of the waterproof ring away from the rotor shaft naturally hangs down and overlaps the waterproof baffle group. In the rotating state, the end of the waterproof ring away from the rotor shaft is spaced from the waterproof baffle group.

2. The outer rotor motor according to claim 1, characterized in that At least one counterweight is provided on the end of the waterproof ring away from the rotor shaft, and the counterweight avoids the waterproof baffle group, or A counterweight strip is provided along the circumference of one end of the waterproof ring away from the rotor shaft, and the counterweight strip avoids the waterproof baffle group.

3. The outer rotor motor according to claim 2, characterized in that: The counterweight block or the counterweight bar is located on a side of the waterproof ring away from the waterproof baffle group.

4. The outer rotor motor according to claim 2, characterized in that The waterproof ring further comprises a rubber ring and a waterproof cloth fixed to the rubber ring. A limiting groove extending along the circumference of the rotor baffle is provided on the rotor baffle, and the rubber ring is clamped in the limiting groove.

5. The outer rotor motor according to claim 4, characterized in that: The rotor baffle defines a mounting groove, the limiting groove is located on the top wall of the mounting groove, the waterproof ring is located in the mounting groove, and the radial width of the waterproof ring is less than or equal to the distance between the two side walls of the mounting groove.

6. The outer rotor motor according to claim 5, characterized in that The mounting groove includes a first side wall close to the rotor shaft and a second side wall away from the rotor shaft. An end of the second side wall close to the base is provided with an inclined portion inclined toward the rotor shaft.

7. The outer rotor motor according to claim 6, characterized in that The waterproof baffle group includes a first baffle, a second baffle, and a third baffle. The first baffle, the second baffle, and the third baffle are arranged in sequence along the radial direction of the base and gradually away from the rotor shaft. The distance between the lower edge of the first side wall and the base is smaller than the distance between the upper edge of the first baffle and the base. Along the radial direction of the base, the first side wall is spaced from the first baffle.

8. The outer rotor motor according to claim 7, characterized in that Along the radial direction of the base, a distance between the second sidewall and the third baffle is greater than a distance between the second baffle and the third baffle.

9. The outer rotor motor according to claim 7, characterized in that Along the radial direction of the base and gradually away from the rotor shaft, the heights of the first baffle, the second baffle, and the third baffle decrease in sequence.

10. The outer rotor motor according to claim 1, characterized in that The waterproof baffle group includes a plurality of baffles, and the ends of the baffles close to the waterproof ring are arc-shaped.

11. The outer rotor motor according to claim 1, characterized in that At least one first adsorption component is provided on the base along the circumference of the waterproof baffle group, and at least one second adsorption component is provided on the side of the waterproof ring facing the base. The first adsorption component and the second adsorption component are arranged opposite to each other, and one of the first adsorption component and the second adsorption component is a strong magnet, and the other is made of ferromagnetic metal that can be adsorbed by a strong magnet.

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