Waterproof sealing type all-aluminum brushless motor

Abstract

The utility model relates to the technical field of motors, and discloses a waterproof sealing type all-aluminum brushless motor, which comprises a casing, an end cover assembly and a stator and rotor set, the end cover assembly is fixed at the upper end part of the casing and is in sealing connection with the casing, and the stator and rotor set is arranged in a cavity enclosed by the end cover assembly and the casing; the end cover assembly comprises an end cover, an oil seal assembly and a gland plate, the end cover is connected with the machine shell in a sealed mode, the upper surface of the end cover extends out of the first connecting cylinder, the oil seal assembly is arranged outside the rotating shaft in a sleeving mode and installed in the first connecting cylinder in an embedded mode, and the gland plate is arranged outside the rotating shaft in a sleeving mode and installed in the first connecting cylinder in an embedded mode. According to the waterproof sealing type all-aluminum brushless motor provided by the utility model, the end cover is in sealed connection with the casing, and the rotating shaft of the stator and rotor group is in sealed connection with the first connecting cylinder arranged on the end cover through the oil seal assembly and the gland plate, so that the waterproof grade and the waterproof effect of the brushless motor are improved; and the underwater working time of the brushless motor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a waterproof and sealed all-aluminum brushless motor. Background Art

[0002] The motor is an important mechanism that can realize the conversion or transmission of electric energy. As an indispensable driving unit in production and life, it is widely used in different industries. Especially with the rapid development of the water industry, brushless motors working underwater, in order to prevent water from entering the motor and damaging the internal circuit of the motor, generally have an oil seal between the end cover and the shaft. The oil seal plays a sealing role to prevent external water from entering the motor. This sealing method can indeed prevent water from entering the motor for a short time and play a role in protecting the motor, but over time, water will still enter the motor and damage the motor, and it cannot be guaranteed that the brushless motor can work underwater for a long time. Summary of the invention

[0003] In order to solve the problems of short waterproofing time and unstable waterproofing effect in the motor in the above-mentioned prior art, in which an oil seal is arranged between the end cover and the rotating shaft to prevent water from entering the inside of the motor, the utility model provides a waterproof sealed all-aluminum brushless motor.

[0004] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0005] In the first aspect, the utility model provides a waterproof and sealed all-aluminum brushless motor, comprising: a casing, an end cover assembly and a stator-rotor group, the end cover assembly is fixed to the upper end of the casing and is sealed with the casing, the stator-rotor group is installed in a cavity closed by the end cover assembly and the casing, and the rotating shaft of the stator-rotor group extends out of the end cover assembly; the end cover assembly comprises an end cover, an oil seal assembly and a pressure cover plate, the end cover is sealed with the casing, and a first connecting cylinder extends from the upper surface of the end cover along the axial direction of the end cover away from the casing, the first connecting cylinder is coaxially arranged with the rotating shaft, the oil seal assembly is sleeved outside the rotating shaft and embedded in the first connecting cylinder so that the rotating shaft is sealed with the first connecting cylinder through the oil seal assembly, and the pressure cover plate is sleeved outside the rotating shaft and embedded in the first connecting cylinder to be pressed on the outer surface of the oil seal assembly.

[0006] In some optional implementations, the oil seal assembly includes at least a first oil seal and a second oil seal, and the first oil seal and the second oil seal are arranged in a stacked manner.

[0007] In some optional implementations, a second connecting tube extends from the lower surface of the end cover along the axial direction of the end cover toward the casing, the second connecting tube is connected to the first connecting tube and can be embedded in the stator-rotor assembly, and the rotating shaft can pass through the second connecting tube and rotate relative to the second connecting tube during operation.

[0008] In some optional implementations, a wiring harness is further included, a mounting portion is extended from one side of the pressure cover plate in a direction perpendicular to the axial direction of the rotating shaft, the first connecting tube is extended from the mounting portion, a first through hole penetrating the upper and lower surfaces of the mounting portion is provided on the mounting portion, a second through hole penetrating the upper and lower surfaces of the end cover is provided on the end cover, the first through hole and the second through hole are coaxially arranged, and the connecting end of the wiring harness is embedded in the first through hole and the second through hole through a wire sleeve and is sealed and connected to the mounting portion and the end cover.

[0009] In some optional implementations, the wire sleeve is in the shape of a cone, and a first annular groove is provided on the outer wall of the wire sleeve along the periphery of the wire sleeve, and a first annular clamping platform is extended on the inner wall of the second through hole along the periphery of the second through hole in the axial direction of the second through hole, and the first annular clamping platform is embedded in the first annular groove.

[0010] In some optional implementations, a sealing member is further included, a third annular groove is provided on the side wall of the end cover along a circumference of the end cover, the sealing member is embedded and installed in the third annular groove, and the end cover is sealed and connected to the housing through the sealing member;

[0011] And / or, a fourth annular groove is provided on the inner wall of the upper end portion of the casing along a circumference of the casing, the sealing member is embedded and installed in the fourth annular groove, and the end cover is sealed and connected to the casing via the sealing member.

[0012] In some optional implementations, the seal comprises at least a first sealing ring and a second sealing ring;

[0013] There are at least two third annular grooves, and the two third annular grooves are arranged vertically along the axis of the end cover, and the first sealing ring and the second sealing ring are respectively embedded and installed in the two third annular grooves;

[0014] And / or, the number of the fourth annular grooves is at least two, the two fourth annular grooves are arranged vertically along the axis of the housing, and the first sealing ring and the second sealing ring are respectively embedded and installed in the two fourth annular grooves.

[0015] In some optional implementations, a fixing member is further included, a plurality of first fixing holes are provided on the side wall of the end cover along a circle of the end cover, a plurality of second fixing holes are provided on the upper end of the casing along a circle of the casing, each of the first fixing holes and the second fixing holes corresponds to each other one by one, and the end cover is embedded in the upper end of the casing and fixedly connected by a fixing member passing through the first fixing holes and the second fixing holes.

[0016] In some optional implementations, the stator-rotor group includes an outer rotor chip assembly and an inner stator chip assembly, the outer rotor chip assembly is a hollow tubular structure, the inner stator chip assembly is located inside the outer rotor chip assembly, and the rotating shaft is arranged on the central axis of the inner stator chip assembly.

[0017] In some optional implementations, the housing and the end cover are both made of aluminum.

[0018] In summary, the utility model has at least the following benefits:

[0019] The utility model provides a waterproof and sealed all-aluminum brushless motor, which improves the waterproof grade and waterproof effect and increases the working time of the brushless motor underwater by sealingly connecting the end cover and the casing, and sealingly connecting the rotating shaft of the stator-rotor group with the first connecting tube arranged on the end cover through the arranged oil seal assembly and the pressure cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An exploded view of a waterproof and sealed all-aluminum brushless motor provided in an embodiment of the utility model.

[0021] Figure 2 A schematic structural diagram of an end cover of a waterproof and sealed all-aluminum brushless motor provided in an embodiment of the utility model.

[0022] Figure 3 The present invention is a schematic structural diagram of a waterproof and sealed all-aluminum brushless motor wire protection sleeve provided in an embodiment of the present invention.

[0023] Figure 4 A schematic structural diagram of a waterproof and sealed all-aluminum brushless motor provided in an embodiment of the utility model.

[0024] Figure 5 for Figure 4 AA section view.

[0025] Figure 6 for Figure 5 A magnified schematic diagram of part A.

[0026] Markings in the figure:

[0027] 1. Casing;

[0028] 2. End cover assembly;

[0029] 21. End cap;

[0030] 211, first connecting tube; 212, second connecting tube; 213, second through hole; 214, first annular clamping platform; 215, second annular groove; 216, second annular clamping platform; 217, notch;

[0031] 22. Oil seal assembly;

[0032] 23. Cover plate;

[0033] 231, mounting portion; 2311, first through hole;

[0034] 3. Stator rotor assembly;

[0035] 31. Outer rotor chip assembly;

[0036] 32. Internal stator chip assembly;

[0037] 33. Rotating shaft;

[0038] 4. Wiring harness;

[0039] 5. Wire protection sleeve;

[0040] 51. first annular groove;

[0041] 6. Fold line buckle;

[0042] 7. Seals;

[0043] 8. Fixing parts;

[0044] 9. Ball bearings. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0047] Embodiment 1:

[0048] In order to solve the problems of short waterproofing time and unstable waterproofing effect in the prior art design of the motor by setting an oil seal between the end cover and the rotating shaft to prevent water from entering the inside of the motor, the utility model provides a waterproof and sealed all-aluminum brushless motor.

[0049] See also Figure 1 The present embodiment discloses a waterproof and sealed all-aluminum brushless motor, comprising: a casing 1, an end cover assembly 2 and a stator-rotor assembly 3, wherein the end cover assembly 2 is fixed to the upper end of the casing 1 and is sealed with the casing 1, the stator-rotor assembly 3 is installed in a cavity closed by the end cover assembly 2 and the casing 1, and a rotating shaft 33 of the stator-rotor assembly 3 extends out of the end cover assembly 2; the end cover assembly 2 comprises an end cover 21, an oil seal assembly 22 and a pressure cover plate 23, the end cover 21 is sealed with the casing 1, a first connecting tube 211 is extended from the upper surface of the end cover 21 along the axial direction of the end cover 21 in a direction away from the casing 1, the first connecting tube 211 is coaxially arranged with the rotating shaft 33, the oil seal assembly 22 is sleeved outside the rotating shaft 33 and embedded in the first connecting tube 211 so that the rotating shaft 33 is sealed with the first connecting tube 211 through the oil seal assembly 22, and the pressure cover plate 23 is sleeved outside the rotating shaft 33 and embedded in the first connecting tube 211 to be pressed on the outer surface of the oil seal assembly 22.

[0050] The housing 1 and the end cover 21 are both made of aluminum.

[0051] The waterproof sealed all-aluminum brushless motor provided in this embodiment improves the waterproof grade and waterproof effect of the brushless motor and increases the working time of the brushless motor underwater by sealingly connecting the end cover 21 with the casing 1 and sealingly connecting the rotating shaft 33 of the stator rotor group 3 with the first connecting tube 211 provided on the end cover 21 through the provided oil seal assembly 22 and the pressure cover plate 23.

[0052] In some optional embodiments, the oil seal assembly 22 includes at least a first oil seal and a second oil seal, and the first oil seal and the second oil seal are arranged in a superimposed manner; the rotating shaft 33 and the end cover 21 are sealed through the double oil seal design, thereby improving the waterproof level of the brushless resistor in the axial direction.

[0053] In some optional embodiments, the waterproof and sealed all-aluminum brushless motor further includes a wiring harness 4, a mounting portion 231 is extended from one side of the pressure cover plate 23 in a direction perpendicular to the axial direction of the rotating shaft 33, a first connecting tube 211 is extended from the mounting portion 231, a first through hole 2311 is provided on the mounting portion 231 and passes through the upper and lower surfaces of the mounting portion 231, a second through hole 213 is provided on the end cover 21 and passes through the upper and lower surfaces of the end cover 21, the first through hole 2311 and the second through hole 213 are coaxially arranged, and the connecting ends of the wiring harness 4 are embedded in the first through hole 2311 and the second through hole 213 through the wire sheath 5 and are sealed and connected to the mounting portion 231 and the end cover 21.

[0054] In this embodiment, if Figure 2-3 As shown, the matching structure between the end cover 21, the pressure cover plate 23 and the wiring harness 4 also includes: a second annular clamping platform 216 extends from the inner wall of the first connecting cylinder 211 along the circumference of the first connecting cylinder 211 in the axial direction of the first connecting cylinder 211, and the pressure cover plate 23 abuts against the second annular clamping platform 216.

[0055] In addition, a notch 217 is provided at a position of the first connecting cylinder 211 relative to the second through hole 213 , through which the mounting portion 231 can pass. The notch 217 can also limit the pressure cover plate 23 .

[0056] The wire sheath 5 is in a cone shape, and a first annular groove 51 is provided on the outer wall of the wire sheath 5 along a circle of the wire sheath 5, and a first annular clamping platform 214 is extended from the inner wall of the second through hole 213 along a circle of the second through hole 213 in the axial direction of the second through hole 213, and the first annular clamping platform 214 is embedded in the first annular groove 51, so that the wire sheath 5 and the end cover 21 are sealed, and no glue sealing is required, and disassembly is possible.

[0057] In some optional embodiments, a second annular groove 215 is provided on the upper surface of the end cover 21 along the second through hole 213 , and the upper end of the wire sheath 5 is disposed in the second annular groove 215 and sealedly connected to the lower surface of the mounting portion 231 .

[0058] It can be understood that: the upper side wall of the first annular groove 51 of the wire sleeve 5 abuts against the second annular groove 215, the upper end surface of the wire sleeve 5 abuts against the lower surface of the mounting portion 231, and the first annular clamping platform 214 arranged in the second through hole 213 is inserted into the first annular groove 51 of the wire sleeve 5, so that the wire harness 4 is sealed between the wire sleeve 5 and the end cover 21 and the pressure cover plate 23, thereby ensuring the waterproof effect between the wire harness 4 and the end cover 21 and the pressure cover plate 23.

[0059] In some optional embodiments, the connecting end of the wire harness 4 is bent at a right angle, and the bent wire harness 4 is fixed by a fold line buckle 6, thereby ensuring the verticality of the bending of the wire harness 4. When the wire harness 4 shakes, the verticality of the bending of the wire harness 4 will not be affected, thereby further ensuring the waterproof effect between the wire harness 4 and the end cover 21 and the pressure cover plate 23.

[0060] In some optional embodiments, the connection structure between the end cover 21 and the housing 1 and the stator-rotor assembly 3 is optimized, such as Figure 4-6 As shown:

[0061] The connection structure between the end cover 21 and the stator rotor assembly 3 is:

[0062] A second connecting tube 212 extends from the lower surface of the end cover 21 along the axial direction of the end cover 21 toward the casing 1. The second connecting tube 212 is connected to the first connecting tube 211 and can be embedded in the stator-rotor assembly 3. The rotating shaft 33 can pass through the second connecting tube 212 and rotate relative to the second connecting tube 212 during operation.

[0063] Specifically, the second connecting cylinder 212 is sleeved outside the rotating shaft 33 , and the second connecting cylinder 212 and the rotating shaft are rotatably connected via a ball bearing 9 .

[0064] Preferably, a fifth annular groove is provided on the inner wall of the second connecting cylinder 212 along the circumference of the second connecting cylinder 212 , and the ball bearing 9 can be inserted into the fifth annular groove to limit the position of the ball bearing 9 .

[0065] In some optional embodiments, the stator-rotor group 3 includes an outer rotor chip assembly 31 and an inner stator chip assembly 32, the outer rotor chip assembly 31 is a hollow tubular structure, the inner stator chip assembly 32 is located inside the outer rotor chip assembly 31, the rotating shaft 33 is arranged on the central axis of the inner stator chip assembly 32, and the second connecting tube 212 is sleeved outside the rotating shaft 33 and embedded in the inner stator chip assembly 32.

[0066] The connection structure between the end cover 21 and the housing 1 is:

[0067] A third annular groove is provided on the side wall of the end cover 21 along a circumference of the end cover 21 , and the end cover 21 is sealedly connected to the housing 1 via a sealing member 7 embedded in the third annular groove.

[0068] In some optional embodiments, a fourth annular groove is provided on the inner wall of the upper end portion of the casing 1 along a circumference of the casing 1 , and the end cover 21 is sealedly connected to the casing 1 via a sealing member 7 embedded in the fourth annular groove.

[0069] In some optional embodiments, a third annular groove is provided on the side wall of the end cover 21 along the periphery of the end cover 21, and a fourth annular groove is provided on the inner wall of the upper end portion of the casing 1 along the periphery of the casing 1. The fourth annular groove is arranged opposite to the third annular groove, and the fourth annular groove cooperates with the third annular groove to accommodate the seal 7.

[0070] In some optional embodiments, the sealing member 7 includes at least a first sealing ring and a second sealing ring.

[0071] At least two third annular grooves are provided. The two third annular grooves are provided up and down along the axis of the end cover 21. The first sealing ring and the second sealing ring are respectively embedded and installed in the two third annular grooves.

[0072] And / or, at least two fourth annular grooves are provided, the two fourth annular grooves are provided up and down along the axis of the housing 1, and the first sealing ring and the second sealing ring are respectively embedded and installed in the two fourth annular grooves.

[0073] The sealing member 7 is provided to achieve a sealed connection between the end cover 21 and the housing 1 .

[0074] In addition, after the end cover 21 and the housing 1 are sealed by the sealing member 7 , they are also fixed by the fixing member 8 .

[0075] Specifically, a plurality of first fixing holes are provided on the side wall of the end cover 21 along a circle of the end cover 21, and a plurality of second fixing holes are provided on the upper end of the casing 1 along a circle of the casing 1, and each first fixing hole and the second fixing hole correspond to each other one by one. The end cover 21 is embedded in the upper end of the casing 1 and is fixedly connected by a fixing member 8 passing through the first fixing hole and the second fixing hole.

[0076] In this embodiment, sealing is achieved by providing a sealing member 7 at the connection between the end cover 21 and the housing 1, and the connection is fixed by a fixing member 8 without the need for glue injection or rubber encapsulation, so that the housing 1 is detachable, which not only achieves waterproofing but also facilitates the maintenance of the brushless motor.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0079] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0080] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A waterproof sealed all-aluminum brushless motor, characterized in that: include: A casing (1), an end cover assembly (2) and a stator-rotor assembly (3), wherein the end cover assembly (2) is fixed to the upper end of the casing (1) and is sealed to the casing (1), the stator-rotor assembly (3) is installed in a cavity closed by the end cover assembly (2) and the casing (1), and the rotating shaft (33) of the stator-rotor assembly (3) extends out of the end cover assembly (2); the end cover assembly (2) comprises an end cover (21), an oil seal assembly (22) and a pressure cover plate (23), the end cover (21) is sealed to the casing (1), and a pressure plate (23) is provided on the upper surface of the end cover (21) along the A first connecting tube (211) is extended axially from the end cover (21) in a direction away from the housing (1); the first connecting tube (211) is coaxially arranged with the rotating shaft (33); the oil seal assembly (22) is sleeved outside the rotating shaft (33) and embedded in the first connecting tube (211) so that the rotating shaft (33) is sealedly connected to the first connecting tube (211) through the oil seal assembly (22); the pressure cover plate (23) is sleeved outside the rotating shaft (33) and embedded in the first connecting tube (211) so as to be pressed against the outer surface of the oil seal assembly (22).

2. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: The oil seal assembly (22) comprises at least a first oil seal and a second oil seal, wherein the first oil seal and the second oil seal are arranged in a stacked manner.

3. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: A second connecting tube (212) extends from the lower surface of the end cover (21) along the axial direction of the end cover (21) toward the housing (1); the second connecting tube (212) is connected to the first connecting tube (211) and can be embedded in the stator-rotor assembly (3); and the rotating shaft (33) can pass through the second connecting tube (212) and rotate relative to the second connecting tube (212) during operation.

4. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: It also includes a wiring harness (4), a mounting portion (231) extending from one side of the pressure cover plate (23) in a direction perpendicular to the axial direction of the rotating shaft (33), the mounting portion (231) extending from the first connecting tube (211), a first through hole (2311) penetrating the upper and lower surfaces of the mounting portion (231) is provided on the mounting portion (231), a second through hole (213) penetrating the upper and lower surfaces of the end cover (21) is provided on the end cover (21), the first through hole (2311) and the second through hole (213) are coaxially arranged, and the connecting end of the wiring harness (4) is embedded in the first through hole (2311) and the second through hole (213) through a wire sheath (5) and is sealed and connected to the mounting portion (231) and the end cover (21).

5. The waterproof sealed all-aluminum brushless motor according to claim 4, characterized in that: The wire protection sleeve (5) is in a frustum shape, and a first annular groove (51) is provided on the outer wall of the wire protection sleeve (5) along the periphery of the wire protection sleeve (5), and a first annular clamping platform (214) is extended from the inner wall of the second through hole (213) along the periphery of the second through hole (213) in the axial direction of the second through hole (213), and the first annular clamping platform (214) is embedded in the first annular groove (51).

6. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: The machine body also comprises a sealing member (7), wherein a third annular groove is provided on the side wall of the end cover (21) along the periphery of the end cover (21), the sealing member (7) is embedded and installed in the third annular groove, and the end cover (21) is sealedly connected to the housing (1) via the sealing member (7); And / or, a fourth annular groove is provided on the inner wall of the upper end portion of the casing (1) along the periphery of the casing (1), the sealing member (7) is embedded and installed in the fourth annular groove, and the end cover (21) is sealedly connected to the casing (1) via the sealing member (7).

7. The waterproof sealed all-aluminum brushless motor according to claim 6, characterized in that: The sealing member (7) comprises at least a first sealing ring and a second sealing ring; At least two third annular grooves are provided, and the two third annular grooves are provided vertically along the axis of the end cover (21), and the first sealing ring and the second sealing ring are respectively embedded and installed in the two third annular grooves; And / or, the number of the fourth annular grooves is at least two, the two fourth annular grooves are arranged vertically along the axis of the housing (1), and the first sealing ring and the second sealing ring are respectively embedded and installed in the two fourth annular grooves.

8. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: It also comprises a fixing member (8), a plurality of first fixing holes are provided on the side wall of the end cover (21) along a circumference of the end cover (21), a plurality of second fixing holes are provided on the upper end of the casing (1) along a circumference of the casing (1), each of the first fixing holes and the second fixing holes corresponds to each other, and the end cover (21) is embedded in the upper end of the casing (1) and is fixedly connected by the fixing member (8) passing through the first fixing holes and the second fixing holes.

9. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: The stator-rotor assembly (3) comprises an outer rotor chip assembly (31) and an inner stator chip assembly (32); the outer rotor chip assembly (31) is a hollow tubular structure; the inner stator chip assembly (32) is located inside the outer rotor chip assembly (31); and the rotating shaft (33) is arranged on the central axis of the inner stator chip assembly (32).

10. The waterproof sealed all-aluminum brushless motor according to claim 1, characterized in that: The housing (1) and the end cover (21) are both made of aluminum.

Images