Waterproof sealing type plastic sleeve aluminum brushless motor

Abstract

The utility model relates to the technical field of motors, and discloses a waterproof sealing type plastic sleeve aluminum brushless motor, which comprises a casing, an end cover assembly and a stator and rotor set, the end cover assembly is arranged 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. A rotating shaft of the stator-rotor set extends out of the end cover assembly; the end cover assembly comprises an end cover made of plastic materials and a base made of aluminum materials, the end cover is arranged above the base and connected with the base in a clamping mode, the base is embedded into the machine shell and connected with the machine shell in a contact mode, and the end cover is connected with the machine shell in a sealed mode. According to the waterproof sealing type plastic sleeve aluminum brushless motor provided by the utility model, the end cover assembly is designed into the end cover and the base in a split manner, the base is made of an aluminum material and is in contact connection with the casing to realize a heat dissipation effect, and the end cover is made of a plastic material and is exposed outside the base, so that the heat dissipation effect is realized, the base is protected and is prevented from being oxidized, and the service life of the motor is prolonged. 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 plastic-sheathed 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.

[0003] In addition, the outer shell of existing brushless motors mostly adopts an all-aluminum structure, that is, the shell and the end cover are both made of aluminum material, so that it can achieve a higher level of waterproof and heat dissipation effects. However, when the end cover is made of aluminum material, aluminum is easily oxidized when it comes into contact with chemical substances in water, which affects the service life of the end cover and further affects its waterproof effect. Summary of the invention

[0004] In order to solve the problem that the housing and end cover of the brushless motor in the above-mentioned prior art are both made of aluminum material, and the aluminum is easily oxidized when in contact with chemical substances in water, which affects the service life of the end cover part and further affects its waterproof effect, the utility model provides a waterproof sealed plastic-sheathed aluminum brushless motor.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] In the first aspect, the utility model provides a waterproof and sealed plastic-sheathed aluminum brushless motor, comprising: a shell, an end cover assembly and a stator-rotor group, wherein the end cover assembly is installed at the upper end of the shell and is sealed and connected to the shell, the stator-rotor group is installed in a cavity closed by the end cover assembly and the shell, and the rotating shaft of the stator-rotor group extends out of the end cover assembly; the end cover assembly comprises an end cover made of plastic material and a base made of aluminum material, the end cover is arranged above the base and is connected to the base in a locking position, the base is embedded and installed in the shell and is in contact and connected to the shell, and the end cover is sealed and connected to the shell.

[0007] In some optional implementations, a retaining member is further included, which is installed in the base and located between the end cover and the base. A retaining groove is provided on the rotating shaft along the circumference of the rotating shaft. The rotating shaft passes through the base and the retaining member, and the retaining member is embedded in the retaining groove.

[0008] In some optional implementations, the end cover assembly also includes an oil seal assembly and a pressure cover plate, an installation space is provided on the end cover along the axial direction of the end cover, the oil seal assembly is sleeved outside the rotating shaft and embedded in the installation space so that the rotating shaft is sealed and connected to the end cover through the oil seal assembly, a first connecting tube extends from the upper surface of the end cover along the axial direction of the installation space away from the casing, the pressure cover plate is sleeved outside the rotating shaft and embedded in the first connecting tube to be pressed on the outer surface of the oil seal assembly.

[0009] In some optional implementations, a second connecting tube extends from the lower surface of the base along the axial direction of the base toward the casing, the second connecting tube is 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.

[0010] In some optional implementations, a wiring harness is further included, and a guide cylinder is extended from the end cover in the direction of the base relative to the surface of the base, and the connecting end of the wiring harness is embedded in the guide cylinder and sealedly connected to the guide cylinder; a through groove matching the guide cylinder is provided at the relative position of the base to the guide cylinder, and the guide cylinder passes through the through groove.

[0011] In some optional implementations, a first limiting portion is provided on the surface of the end cover opposite to the base, and a second limiting portion is provided on the surface of the base opposite to the end cover, the first limiting portion and the second limiting portion are nested, and the first limiting portion and the second limiting portion are arranged around the rotating shaft.

[0012] In some optional implementations, a first positioning portion is provided on the surface of the end cover opposite to the base, and a second positioning portion is provided on the surface of the base opposite to the end cover, and the first positioning portion and the second positioning portion are nested; the first positioning portion is provided in the first limiting portion, and the second positioning portion is provided in the second limiting portion.

[0013] In some optional implementations, a sealing member is further included, wherein a first 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 first annular groove, and the end cover is sealed and connected to the housing through the sealing member;

[0014] And / or, a second 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 second annular groove, and the end cover is sealed and connected to the casing via the sealing member.

[0015] In some optional implementations, the seal comprises at least a first sealing ring and a second sealing ring;

[0016] There are at least two first annular grooves, the two first 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 first annular grooves;

[0017] And / or, the number of the second annular grooves is at least two, the two second 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 second annular grooves.

[0018] In some optional implementations, a first locking portion is provided on the side wall of the upper end of the end cover along the periphery of the end cover, and a second locking portion is provided on the upper end of the housing along the periphery of the housing, and the first locking portion is connected to the second locking portion in a locking manner.

[0019] In summary, the utility model has at least the following benefits:

[0020] The utility model provides a waterproof sealed plastic-sheathed aluminum brushless motor, in which an end cover assembly is split into an end cover and a base. The base is made of aluminum material and is in contact with and connected to the casing to achieve a heat dissipation effect. The end cover is made of plastic material and is exposed outside the base, so that the split design of the end cover assembly can achieve a heat dissipation effect while protecting the base to prevent oxidation. While improving its waterproof grade and waterproof effect, it increases the working time of the brushless motor underwater, solving the problem that the entire end cover assembly is easily oxidized when in contact with chemical substances in the water, affecting the service life of the end cover assembly and further affecting its waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An exploded view of a waterproof and sealed plastic-sheathed aluminum brushless motor provided in an embodiment of the utility model.

[0022] Figure 2 A schematic structural diagram of a stator and rotor assembly of a waterproof and sealed plastic-sheathed aluminum brushless motor provided in an embodiment of the utility model.

[0023] Figure 3 An exploded view of an end cover assembly of a waterproof and sealed plastic-sheathed aluminum brushless motor provided in an embodiment of the utility model.

[0024] Figure 4 Another angle exploded view of the end cover assembly of a waterproof and sealed plastic-sheathed aluminum brushless motor provided in an embodiment of the utility model.

[0025] Figure 5A schematic diagram of the assembly structure of an end cover assembly of a waterproof and sealed plastic-sheathed aluminum brushless motor provided in an embodiment of the utility model.

[0026] Figure 6 A schematic structural diagram of a waterproof and sealed plastic-sheathed aluminum brushless motor provided in an embodiment of the utility model.

[0027] Figure 7 for Figure 6 AA section view.

[0028] Figure 8 for Figure 7 A magnified schematic diagram of part A.

[0029] Markings in the figure:

[0030] 1. Casing;

[0031] 11. The second clamping portion;

[0032] 2. End cover assembly;

[0033] 21. End cap;

[0034] 211, first connecting tube; 212, first annular clamping platform; 213, first limiting portion; 214, first positioning portion;

[0035] 2141, limiting hole; 2142 limiting protrusion;

[0036] 215, first positioning portion; 216, fourth limiting portion; 217, guide tube;

[0037] 22. Base;

[0038] 221, second connecting tube; 222, through groove; 223, second limiting portion; 224, second positioning portion;

[0039] 2241, limiting column; 2242, limiting groove;

[0040] 23. Oil seal assembly;

[0041] 24. Covering plate; 241. Third limiting part;

[0042] 3. Stator rotor assembly;

[0043] 31. Outer rotor chip assembly;

[0044] 32. Internal stator chip assembly;

[0045] 33. Rotating shaft;

[0046] 331, card slot;

[0047] 4. Card position piece;

[0048] 5. Wiring harness;

[0049] 6. Fold line buckle;

[0050] 7. Seals;

[0051] 8. Ball bearings. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] Embodiment 1:

[0055] In order to solve the problem that the housing and end cover of the brushless motor in the above-mentioned prior art are made of aluminum, and aluminum is easily oxidized when in contact with chemical substances in water, which affects the service life of the end cover part and further affects its waterproof effect, this embodiment provides a waterproof sealed plastic-sheathed aluminum brushless motor.

[0056] See also Figure 1 The present embodiment discloses a waterproof sealed plastic-sheathed 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 mounted on the upper end of the casing 1 and is sealedly connected to the casing 1, the stator-rotor assembly 3 is mounted 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 made of plastic material and a base 22 made of aluminum material, the end cover 21 is arranged above the base 22 and is connected to the base 22 in a clamping position, the base 22 is embedded and mounted in the casing 1 and is in contact with the casing 1, and the end cover 21 is sealedly connected to the casing 1.

[0057] In this embodiment, it can be understood that the end cover assembly 2 is designed as a split type, which is divided into an end cover 21 made of plastic material and a base 22 made of aluminum material. The end cover 21 is arranged above the base 22 and is connected to the base 22 to achieve split installation, and the base 22 is embedded in the casing 1 and connected to the stator rotor group 3. The side wall of the base 22 is in contact with the inner wall of the casing 1 to achieve a faster heat dissipation effect. The end cover 21 is arranged outside the base 22 and exposed to the outside. While achieving the heat dissipation effect, the base 22 is protected from oxidation. While improving its waterproof grade and waterproof effect, it increases the working time of the brushless motor underwater, solving the problem that the entire end cover assembly 2 is easily oxidized when in contact with chemical substances in the water, affecting the service life of the end cover assembly 2, and further affecting its waterproof effect.

[0058] In some optional embodiments, the end cover assembly 2 also includes an oil seal assembly 23 and a pressure cover plate 24. An installation space is provided on the end cover 21 along the axial direction of the end cover 21. The oil seal assembly 23 is sleeved outside the rotating shaft 33 and embedded in the installation space so that the rotating shaft 33 is sealed and connected to the end cover 21 through the oil seal assembly 23. A first connecting tube 211 extends from the upper surface of the end cover 21 along the axial direction of the installation space away from the casing 1. The pressure cover plate 24 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 23.

[0059] In some optional embodiments, the oil seal assembly 23 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.

[0060] In addition, in some optional embodiments, see Figure 3-4 As shown, a first annular clamping platform 212 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 24 abuts against the first annular clamping platform 212 .

[0061] In order to prevent the pressure cover plate 24 from rotating, a third limiting portion 241 is provided on one side of the pressure cover plate 24, and a fourth limiting portion 216 is provided on the inner wall of the first connecting tube 211. The fourth limiting portion 216 is located above the first annular clamping platform 212. After the pressure cover plate 24 abuts against the first annular clamping platform 212, the third limiting portion 241 and the fourth limiting portion 216 are clamped or nested, thereby limiting the pressure cover plate 24 and preventing the pressure cover plate 24 from rotating.

[0062] In some optional embodiments, the third limiting portion 241 is an arc-shaped notch, and the fourth limiting portion 216 is an arc-shaped protruding structure extending from the side wall of the first connecting tube 211 toward the axial direction of the first connecting tube 211. The arc-shaped protruding structure can be embedded in the arc-shaped notch to limit the pressure cover plate 24.

[0063] In some optional embodiments, in order to determine whether the base 22 and the stator rotor group 3 are installed in place, the waterproof sealed plastic-sheathed aluminum brushless motor provided in this embodiment further includes a clamping member 4, which is installed in the base 22 and located between the end cover 21 and the base 22. A clamping groove 331 is provided on the rotating shaft 33 along the rotating shaft 33. The rotating shaft 33 passes through the base 22 and the clamping member 4, and the clamping member 4 is embedded in the clamping groove 331. Figure 2 shown.

[0064] In this embodiment, the retaining member 4 is installed in the base 22 and is located between the end cover 21 and the base 22, and the oil seal assembly 23 is arranged in the end cover 21, so that the retaining member 4 can be installed separately from the oil seal assembly 23, that is, after the retaining member 4 is installed, the retaining member 4 can be seen to ensure that the retaining member 4 is installed in place, and then the end cover 21, the oil seal assembly 23 and the pressure cover plate 24 are installed.

[0065] In some optional embodiments, please continue to see Figure 3-4 As shown, the assembly structure between the end cover 21 and the base 22 is optimized.

[0066] A first limiting portion 213 is provided on the surface of the end cover 21 opposite to the base 22, and a second limiting portion 223 is provided on the surface of the base 22 opposite to the end cover 21. The first limiting portion 213 and the second limiting portion 223 are nested and arranged around the rotating shaft 33.

[0067] Preferably, the first limiting portion 213 is a limiting groove arranged on the surface of the end cover 21 opposite to the base 22, and the limiting groove is arranged outside the installation space of the end cover 21. The second limiting portion 223 is a limiting step extending from the surface of the base 22 opposite to the end cover 21 in the direction of the end cover 21, and the limiting step can be embedded in the limiting groove, so that the end cover 21 and the base 22 can be clamped by the nested limiting steps and limiting grooves, thereby realizing a detachable connection.

[0068] In some optional embodiments, a first positioning portion 214 is provided on the surface of the end cover 21 opposite to the base 22, and a second positioning portion 224 is provided on the surface of the base 22 opposite to the end cover 21, and the first positioning portion 214 and the second positioning portion 224 are nested; the first positioning portion 214 is provided in the first limiting portion 213, and the second positioning portion 224 is provided in the second limiting portion 223.

[0069] Preferably, the first positioning portion 214 includes a limiting hole 2141 arranged in the first limiting portion 213, and the second positioning portion 224 includes a limiting column 2241 arranged in the second limiting portion 223, and the limiting column 2241 can be embedded in the limiting hole 2141 to limit the end cover 21 and the base 22 to prevent the end cover 21 from rotating relative to the base 22.

[0070] In some optional embodiments, the first positioning portion 214 also includes a limiting protrusion 2142 provided in the first limiting portion 213, and the limiting protrusion 2142 extends in the direction of the base 22 on the opposite surface of the end cover 21 and the base 22. The second positioning portion 224 also includes a limiting groove 2242 provided in the second limiting portion 223, and the shape of the limiting groove 2242 matches the limiting protrusion 2142, so that the limiting protrusion 2142 can be embedded in the limiting groove 2242, further realizing the limiting of the end cover 21 and the base 22 to prevent the end cover 21 from rotating relative to the base 22. The assembled end cover 21 and the base 22 are as shown in FIG. Figure 5 shown.

[0071] In this embodiment, the waterproof sealed plastic-sheathed aluminum brushless motor also includes a wiring harness 5, and a guide tube 217 extends from the end cover 21 in the direction of the base 22 relative to the base 22, and the connecting end of the wiring harness 5 is embedded in the guide tube 217 and sealedly connected to the guide tube 217; a through groove 222 matching the guide tube 217 is provided at the relative position of the base 22 and the guide tube 217, and the guide tube 217 passes through the through groove 222.

[0072] In some optional embodiments, the connecting end of the wire harness 5 is bent at a right angle, and the bent wire harness 5 is fixed by a fold line buckle 6, thereby ensuring the verticality of the bending of the wire harness 5. When the wire harness 5 shakes, the verticality of the bending of the wire harness 5 will not be affected, thereby further ensuring the waterproof effect between the wire harness 5 and the end cover 21.

[0073] In addition, in this embodiment, a second connecting tube 221 extends from the lower surface of the base 22 along the axial direction of the base 22 toward the housing 1, and the second connecting tube 221 is embedded in the stator-rotor assembly 3. The rotating shaft 33 can pass through the second connecting tube 221 and rotate relative to the second connecting tube 221 during operation.

[0074] Specifically, Figure 6-8 As shown, the second connecting cylinder 221 is sleeved outside the rotating shaft 33 , and the second connecting cylinder 221 and the rotating shaft are rotatably connected via a ball bearing 8 .

[0075] Preferably, a third annular groove is provided on the inner wall of the second connecting cylinder 221 along the circumference of the second connecting cylinder 221 , and the ball bearing 8 can be inserted into the third annular groove to limit the position of the ball bearing 8 .

[0076] 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.

[0077] In some optional embodiments, the waterproof sealed plastic-sheathed aluminum brushless motor further includes a seal 7, a first annular groove is provided on the side wall of the end cover 21 along the periphery of the end cover 21, the seal 7 is embedded and installed in the first annular groove, and the end cover 21 is sealed and connected to the housing 1 through the seal 7;

[0078] In some optional embodiments, a second annular groove is provided on the inner wall of the upper end portion of the casing 1 along a circumference of the casing 1 , the seal 7 is embedded and installed in the second annular groove, and the end cover 21 is sealed and connected to the casing 1 via the seal 7 .

[0079] In some optional embodiments, a first annular groove is provided on the side wall of the end cover 21 along the periphery of the end cover 21, and a second 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 second annular groove is arranged opposite to the first annular groove, and the second annular groove cooperates with the first annular groove to accommodate the seal 7.

[0080] Specifically, the sealing member 7 at least includes a first sealing ring and a second sealing ring.

[0081] At least two first annular grooves are provided, and the two first annular grooves are provided up and down 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 first annular grooves.

[0082] In some optional embodiments, at least two second annular grooves are provided, and the two second 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 second annular grooves.

[0083] As a preferred embodiment, the first locking portion 215 is provided on the side wall of the upper end of the end cover 21 along the periphery of the end cover 21, and the second locking portion 11 is provided on the upper end of the casing 1 along the periphery of the casing 1, and the first locking portion 215 is locked and connected with the second locking portion 11.

[0084] Preferably, the first locking portion 215 can be a limiting block extending outward from the side wall of the upper end of the end cover 21 along the periphery of the end cover 21, and the second locking portion 11 can be a limiting notch provided at the upper end of the casing 1 along the periphery of the casing 1. The end cover 21 is embedded and installed in the upper end of the casing 1, and is sealed with the casing 1 through the sealing member 7, while being limited by the first locking portion 215 and the second locking portion 11.

[0085] In this embodiment, the waterproof sealed plastic-sheathed aluminum brushless motor is sealed by providing a seal 7 at the connection between the end cover 21 and the housing 1. At the same time, the first locking portion 215 is locked and connected with the second locking portion 11 without the need for glue pouring or glue encapsulation, so that the housing 1 is detachable, which not only achieves waterproofing but also facilitates the maintenance of the brushless motor.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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 plastic-sheathed 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 mounted on the upper end of the casing (1) and is sealed to the casing (1), the stator-rotor assembly (3) is mounted 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) made of plastic material and a base (22) made of aluminum material, the end cover (21) is arranged above the base (22) and is connected to the base (22) in a locking manner, the base (22) is embedded and mounted in the casing (1) and is in contact with the casing (1), and the end cover (21) is sealed to the casing (1).

2. A waterproof sealed plastic-sheathed aluminum brushless motor according to claim 1, characterized in that: The invention also comprises a retaining member (4), wherein the retaining member (4) is installed in the base (22) and is located between the end cover (21) and the base (22); a retaining groove (331) is provided on the rotating shaft (33) along a circumference of the rotating shaft (33); the rotating shaft (33) passes through the base (22) and the retaining member (4); and the retaining member (4) is embedded in the retaining groove (331).

3. A waterproof and sealed plastic-sheathed aluminum brushless motor according to claim 1, characterized in that: The end cover assembly (2) further comprises an oil seal assembly (23) and a pressure cover plate (24); an installation space is provided on the end cover (21) along the axial direction of the end cover (21); the oil seal assembly (23) is sleeved outside the rotating shaft (33) and embedded in the installation space so that the rotating shaft (33) is sealedly connected to the end cover (21) through the oil seal assembly (23); a first connecting tube (211) extends from the upper surface of the end cover (21) along the axial direction of the installation space in a direction away from the housing (1); the pressure cover plate (24) 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 (23).

4. A waterproof and sealed plastic-sheathed aluminum brushless motor according to claim 1, characterized in that: A second connecting tube (221) extends from the lower surface of the base (22) along the axial direction of the base (22) toward the housing (1); the second connecting tube (221) is embedded in the stator-rotor assembly (3); and the rotating shaft (33) can pass through the second connecting tube (221) and rotate relative to the second connecting tube (221) during operation.

5. The waterproof and sealed plastic-sheathed aluminum brushless motor according to claim 1, characterized in that: It also includes a wiring harness (5), wherein a guide tube (217) extends from the end cover (21) opposite to the base (22) in the direction of the base (22), and a connecting end of the wiring harness (5) is embedded in the guide tube (217) and is sealedly connected to the guide tube (217); a through groove (222) matching the guide tube (217) is provided at a position of the base (22) opposite to the guide tube (217), and the guide tube (217) passes through the through groove (222).

6. The waterproof and sealed plastic-sheathed aluminum brushless motor according to claim 1, characterized in that: A first limiting portion (213) is provided on a surface of the end cover (21) opposite to the base (22), and a second limiting portion (223) is provided on a surface of the base (22) opposite to the end cover (21), the first limiting portion (213) and the second limiting portion (223) being nested, and the first limiting portion (213) and the second limiting portion (223) being arranged around the rotating shaft (33).

7. A waterproof and sealed plastic-sheathed aluminum brushless motor according to claim 6, characterized in that: A first positioning portion (214) is provided on a surface of the end cover (21) opposite to the base (22), and a second positioning portion (224) is provided on a surface of the base (22) opposite to the end cover (21), wherein the first positioning portion (214) and the second positioning portion (224) are nested; the first positioning portion (214) is provided in the first limiting portion (213), and the second positioning portion (224) is provided in the second limiting portion (223).

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

9. A waterproof sealed plastic-sheathed aluminum brushless motor according to claim 8, characterized in that: The sealing member (7) comprises at least a first sealing ring and a second sealing ring; At least two first annular grooves are provided, and the two first annular grooves are provided up and down 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 first annular grooves; And / or, at least two second annular grooves are provided, the two second annular grooves are provided 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 second annular grooves.

10. The waterproof and sealed plastic-sheathed aluminum brushless motor according to claim 1, characterized in that: A first locking portion (215) is provided on the side wall of the upper end portion of the end cover (21) along a circumference of the end cover (21), and a second locking portion (11) is provided on the upper end portion of the housing (1) along a circumference of the housing (1), wherein the first locking portion (215) is locked and connected with the second locking portion (11).

Images