Outdoor waterproof motor

Abstract

The utility model discloses an outdoor waterproof motor relates to motor technical field, including shell body, be equipped with stator subassembly, rotor subassembly and condenser module in shell body, the shell body includes upper cover, base and back cover, is equipped with the first sealing ring between upper cover and base, is equipped with the second sealing ring between base and back cover, the first cavity is formed between upper cover and base, the second cavity is formed between base and back cover, stator subassembly is fixed in the first cavity, rotor subassembly rotates and is established in stator subassembly, and rotor subassembly has the axle, is equipped with the skeleton oil seal between axle and upper cover, condenser module is fixed in the second cavity, and condenser module and stator subassembly are electrically connected, the aviation plug is fixed on the back cover, and the aviation plug and condenser module are electrically connected, the outdoor waterproof motor of the utility model can keep effective waterproof in rain, snow, humid etc.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to an outdoor waterproof motor. Background Technology

[0002] Electric motors, as power devices that convert electrical energy into mechanical energy, are widely used in many fields such as industrial production, household appliances, and outdoor equipment. Among them, motors used in outdoor scenarios (such as garden machinery, water pumps, outdoor ventilation equipment, billboards, etc.) inevitably need to be exposed to harsh environments such as rain, snow, and humidity for a long time.

[0003] In existing technologies, to enable outdoor use of motors, a separate waterproof protective enclosure is typically added to protect the motor from water. However, while this approach improves protection, it also introduces new problems: it increases the size and weight of the entire drive system and makes installation inconvenient. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides an outdoor waterproof motor. By setting a first sealing ring, a second sealing ring, a skeleton oil seal and an aviation plug on the outer shell, a comprehensive waterproof barrier is formed. It can maintain effective waterproofing in harsh environments such as rain, snow and humidity, without the need for an additional waterproof protective box, thus avoiding increasing the size and weight of the entire drive system and facilitating installation.

[0005] This utility model provides an outdoor waterproof motor, including an outer shell, in which a stator assembly, a rotor assembly and a capacitor module are disposed; The outer casing comprises, from top to bottom, a top cover, a base, and a rear cover that are fixedly connected in sequence. A first sealing ring is provided between the top cover and the base, and a second sealing ring is provided between the base and the rear cover. A first cavity is formed between the top cover and the base, and a second cavity is formed between the base and the rear cover. The stator assembly is fixedly disposed in the first cavity, the rotor assembly is rotatably disposed in the stator assembly, the rotor assembly has a rotating shaft, the head end of the rotating shaft protrudes outside the upper cover, and a skeleton oil seal is disposed between the rotating shaft and the upper cover; The capacitor module is fixedly disposed in the second cavity, and the capacitor module is electrically connected to the stator assembly; an aviation plug is fixedly disposed on the rear cover, and the aviation plug is electrically connected to the capacitor module.

[0006] Specifically, a first mounting ring is formed radially protruding on the side of the upper cover that connects with the base, and a second mounting ring is formed radially protruding on the side of the base that connects with the upper cover. The outer contours of the first mounting ring and the second mounting ring are the same, and the first mounting ring and the second mounting ring are fixedly connected based on a first fastener.

[0007] Specifically, the back cover and the base are fixedly connected based on the second fastener. A positioning ring is protruded from the back cover and extends into the second cavity. The outer peripheral surface of the positioning ring is in clearance fit with the inner peripheral surface of the second cavity.

[0008] Specifically, the stator assembly includes a stator core and a stator winding wound on the stator core, the stator winding being electrically connected to the capacitor module; the rotor assembly includes a rotor, the rotating shaft being fixedly disposed in the rotor, and the rotor being rotatably disposed in the stator core based on the rotating shaft; The outer circumferential surface of the stator core is formed with a fixed fitting part. The upper half of the fixed fitting part is interference-fitted with the upper cover, and the lower half of the fixed fitting part is interference-fitted with the base. There is a first gap between the upper end of the stator core and the upper cover, and a second gap between the lower end of the stator core and the base.

[0009] Specifically, the inner top of the upper cover has a first mounting seat protruding out. The first mounting seat is connected to the outside through a first through hole. The first mounting seat is sequentially embedded with a first bearing, a first retaining ring, and the skeleton oil seal from bottom to top. The head end of the rotating shaft passes through the first bearing, the first retaining ring, the skeleton oil seal, and the first through hole in sequence. The outer diameter of the first retaining ring is D1, the inner diameter of the first retaining ring is D2, the diameter of the skeleton oil seal is D3, the diameter of the first through hole is D4, and the constraint relationship between D1, D2, D3 and D4 is: D1 > D3 > D2 > D4. The base has a second mounting seat protruding from the bottom of the first cavity, and a second bearing is embedded in the second mounting seat. The tail end of the rotating shaft is embedded in the second bearing.

[0010] Specifically, a second through hole is provided on the base body between the first cavity and the second cavity.

[0011] Specifically, a rectangular through hole is provided on the base body between the first cavity and the second cavity, and a triangular protrusion is formed on the capacitor module. The top of the triangular protrusion is inserted into the rectangular through hole, and the side of the capacitor module away from the triangular protrusion is connected to the back cover.

[0012] Specifically, the top of the triangular protrusion is rounded.

[0013] Specifically, a first receiving groove is formed on the side of the base that connects with the top cover, and the first sealing ring is placed in the first receiving groove. The first sealing ring is elastically compressed by the pressure of the top cover. The base has a second receiving groove formed on the side that connects with the back cover. The second sealing ring is placed in the second receiving groove and is elastically compressed by the pressure of the back cover.

[0014] Specifically, the compression range of the first sealing ring is 30% to 40%, and the compression range of the second sealing ring is 30% to 40%.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses an outdoor waterproof motor, the outer casing of which includes a top cover, a base, and a rear cover. A first sealing ring is provided between the top cover and the base, and a second sealing ring is provided between the base and the rear cover. A skeleton oil seal is provided between the rotor assembly shaft and the top cover, and an aviation plug is fixedly provided on the rear cover. The first sealing ring, the second sealing ring, the skeleton oil seal, and the aviation plug form a comprehensive waterproof barrier, which can effectively prevent water damage in harsh environments such as rain, snow, and humidity. There is no need to install an additional waterproof protective box for protection, thereby avoiding increasing the size and weight of the entire drive system and facilitating installation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a side view of the outdoor waterproof motor in this embodiment of the utility model; Figure 2 This is a three-dimensional structural diagram of the outdoor waterproof motor in this utility model embodiment; Figure 3 This is an exploded structural diagram of the outdoor waterproof motor in an embodiment of this utility model; Figure 4 This is a cross-sectional structural diagram of the outdoor waterproof motor in this embodiment of the utility model; Figure 5 This is a schematic diagram of the internal structure of the upper cover in an embodiment of this utility model; Figure 6This is a schematic diagram of the internal structure of the first cavity side of the base in an embodiment of this utility model; Figure 7 yes Figure 4 Enlarged structural diagram of region A in the middle; Figure 8 This is a three-dimensional structural diagram of the capacitor module in an embodiment of this utility model; Figure 9 This is a schematic diagram of the internal structure of the second cavity side of the base in an embodiment of this utility model.

[0018] In the attached drawings: 10. Outer shell; 11. First fastener; 12. Second fastener; 20. Stator assembly; 21. Fixed mating part; 30. Rotor assembly; 31. Shaft; 32. Rotor; 40. Capacitor module; 41. Triangular protrusion; 51. First sealing ring; 52. Second sealing ring; 60. First cavity; 70. Second cavity; 81. Frame oil seal; 82. First bearing; 83. First snap ring; 84. Second bearing. ; 90. Aviation plug; 100. Top cover; 101. First mounting ring; 102. First axial limiting strip; 103. First mounting base; 104. First through hole; 200. Base; 201. Second mounting ring; 202. Second axial limiting strip; 203. Second mounting base; 204. Second through hole; 205. Rectangular through hole; 206. First receiving groove; 207. Second receiving groove; 300. Rear cover; 310. Positioning ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Figure 1 This diagram shows a side view of the outdoor waterproof motor in an embodiment of the present invention. Figure 2 This diagram shows a three-dimensional structural schematic of the outdoor waterproof motor in an embodiment of the present invention. Figure 3 An exploded view of the outdoor waterproof motor in an embodiment of this utility model is shown. Figure 4 A cross-sectional structural diagram of the outdoor waterproof motor in an embodiment of this utility model is shown.

[0021] This utility model provides an outdoor waterproof motor, including a housing 10, within which a stator assembly 20, a rotor assembly 30, and a capacitor module 40 are disposed; the housing 10 includes, from top to bottom, a top cover 100, a base 200, and a rear cover 300 sequentially and fixedly connected; a first sealing ring 51 is disposed between the top cover 100 and the base 200, and a second sealing ring 52 is disposed between the base 200 and the rear cover 300; a first cavity 60 is formed between the top cover 100 and the base 200, and a second cavity 70 is formed between the base 200 and the rear cover 300; The stator assembly 20 is fixedly disposed in the first cavity 60, and the rotor assembly 30 is rotatably disposed in the stator assembly 20. The rotor assembly 30 has a rotating shaft 31, the head end of which protrudes outside the upper cover 100. A skeleton oil seal 81 is disposed between the rotating shaft 31 and the upper cover 100. The capacitor module 40 is fixedly disposed in the second cavity 70, and the capacitor module 40 is electrically connected to the stator assembly 20; an aviation plug 90 is fixedly disposed on the rear cover 300, and the aviation plug 90 is electrically connected to the capacitor module 40.

[0022] The outdoor waterproof motor of this utility model has an outer casing 10 comprising an upper cover 100, a base 200, and a rear cover 300. A first sealing ring 51 is provided between the upper cover 100 and the base 200, and a second sealing ring 52 is provided between the base 200 and the rear cover 300. A skeleton oil seal 81 is provided between the rotating shaft 31 of the rotor assembly 30 and the upper cover 100. An aviation plug 90 is fixedly provided on the rear cover 300. The first sealing ring 51, the second sealing ring 52, the skeleton oil seal 81, and the aviation plug 90 form a comprehensive waterproof barrier, which can effectively prevent water damage in harsh environments such as rain, snow, and humidity. There is no need to install an additional waterproof protective box for protection, thereby avoiding increasing the size and weight of the entire drive system and facilitating installation.

[0023] Moreover, the outdoor waterproof motor of this utility model creatively designs a physical isolation between the first cavity 60 and the second cavity 70; the first cavity 60 accommodates the heat-generating stator assembly 20 and rotor assembly 30, which is the "hot zone" of the motor; the second cavity 70 independently accommodates the capacitor module 40, isolating it from the main heat source and forming a relatively cool working environment; this layout greatly improves the service life and reliability of the capacitor module 40.

[0024] Furthermore, if all components of an outdoor waterproof motor are integrated into a single cavity, repairs become extremely difficult if any component (such as capacitor module 40) fails, requiring the complete disassembly of the motor unit, which is very inconvenient. This invention's outdoor waterproof motor, through its compartmentalized design, allows capacitor module 40 to be maintained independently. If capacitor module 40 needs replacement, simply opening the rear cover 300 allows access to the capacitor module 40 within the second cavity 70, without disturbing the core stator assembly 20 and rotor assembly 30. This significantly simplifies the maintenance process and reduces maintenance costs.

[0025] In some specific embodiments, please refer to Figures 1 to 4 A first mounting ring 101 is radially protruding from the side of the upper cover 100 that connects with the base 200, and a second mounting ring 201 is radially protruding from the side of the base 200 that connects with the upper cover 100. The outer contours of the first mounting ring 101 and the second mounting ring 201 are the same, and the first mounting ring 101 and the second mounting ring 201 are fixedly connected based on the first fastener 11. The first mounting ring 101 and the second mounting ring 201 provide a wide, flat, and robust mounting platform. When the first fastener 11 (usually a bolt) passes through these two mounting rings and is tightened, the resulting clamping force can be evenly distributed across the entire annular contact surface, thereby transmitting a uniform circumferential compressive force to the first sealing ring 51, ensuring a reliable 360° seal without dead angles. Moreover, the first mounting ring 101 and the second mounting ring 201 greatly enhance the local rigidity and strength of the joint between the upper cover 100 and the base 200, allowing the pressure of the first fastener 11 to be absorbed and dispersed by the robust structure, effectively preventing shell deformation.

[0026] In some specific embodiments, please refer to Figures 1 to 4 The rear cover 300 and the base 200 are fixedly connected based on the second fastener 12. A positioning ring 310 is protruding from the rear cover 300 and extends into the second cavity 70. The outer circumferential surface of the positioning ring 310 is in clearance fit with the inner circumferential surface of the second cavity 70. The clearance fit between the protruding positioning ring 310 and the inner circumferential surface of the second cavity 70 forms a natural radial positioning reference. By simply pushing the positioning ring 310 gently into the second cavity 70, the rear cover 300 can automatically and accurately align with the base 200, greatly simplifying the assembly process and ensuring assembly accuracy. Moreover, the guiding effect of the positioning ring 310 ensures that the rear cover 300 moves only axially during the pressing process, avoiding any radial misalignment. This allows the second sealing ring 52 to be smoothly and evenly compressed to the preset deformation, achieving optimal sealing effect and preventing damage during the assembly process.

[0027] In some specific embodiments, please refer to Figures 1 to 4 The stator assembly 20 includes a stator core and a stator winding wound on the stator core, the stator winding being electrically connected to the capacitor module 40; the rotor assembly 30 includes a rotor 32, a rotating shaft 31 being fixedly disposed in the rotor 32, and the rotor 32 being rotatably disposed in the stator core based on the rotating shaft 31; a fixed fitting portion 21 is protruding from the outer peripheral surface of the stator core, the upper half of the fixed fitting portion 21 being interference-fitted with the upper cover 100, and the lower half of the fixed fitting portion 21 being interference-fitted with the base 200; there is a first gap between the upper end of the stator core and the upper cover 100, and a second gap between the lower end of the stator core and the base 200.

[0028] By using an interference fit, the stator core fixing part 21 is fixed in the upper cover 100 and the base 200, avoiding the need to drill holes in the outer casing 10 to fix the stator core, maintaining the structural strength and sealing integrity of the outer casing 10, and consolidating the motor's waterproof capability from another perspective.

[0029] Furthermore, the stator core is interference-fitted with the upper cover 100 and the base 200 through the protruding fixed fitting part 21 on the outer peripheral surface, which creates a gap between the outer peripheral surface of the stator core and the upper cover 100 and the base 200. This provides valuable free expansion and contraction space for the radial thermal expansion of the stator core, allowing the main body of the stator core to expand radially when heated without being completely restricted by the outer casing 10, thereby reducing the accumulation of radial thermal stress. The fixed fitting part 21 and the outer casing 10 achieve close contact, establishing an efficient heat conduction path, resulting in a small amount of thermal expansion of the fixed fitting part 21 with minimal impact.

[0030] In addition, a first gap is provided between the upper end of the stator core and the upper cover 100, and a second gap is provided between the lower end and the base 200. These two gaps provide valuable free expansion and contraction space for the thermal expansion of the stator core in the axial direction. This allows the stator core to expand freely to both ends when heated, without being restricted by the outer shell 10, thereby completely avoiding the accumulation of axial thermal stress.

[0031] Figure 5 A schematic diagram of the internal structure of the upper cover in an embodiment of this utility model is shown. Figure 6The diagram shows the internal structure of the first cavity side of the base in this embodiment of the invention. A plurality of first axial limiting strips 102 are protruding from the inner circumferential surface of the upper cover 100. A plurality of second axial limiting strips 202 are protruding from the inner circumferential surface of the base 200 in the first cavity 60. The ends of the plurality of first axial limiting strips 102 are connected to the upper side of the fixed fitting part 21, and the ends of the plurality of second axial limiting strips 202 are connected to the lower side of the fixed fitting part 21. The first axial limiting strips 102 and the second axial limiting strips 202 sandwich the fixed fitting part 21 in the middle, effectively preventing axial displacement of the stator core and ensuring the installation stability of the stator assembly 20.

[0032] Figure 7 It shows Figure 4 Please refer to the enlarged structural diagram of region A in the middle. Figure 5 The top inner part of the upper cover 100 is formed with a first mounting base 103. The first mounting base 103 is connected to the outside through the first through hole 104. The first mounting base 103 is provided with a first bearing 82, a first retaining ring 83 and the skeleton oil seal 81 in sequence from bottom to top. The head end of the rotating shaft 31 passes through the first bearing 82, the first retaining ring 83, the skeleton oil seal 81 and the first through hole 104 in sequence. The outer diameter of the first retaining ring 83 is D1, the inner diameter of the first retaining ring 83 is D2, the diameter of the skeleton oil seal 81 is D3, the diameter of the first through hole 104 is D4, and the constraint relationship between D1, D2, D3 and D4 is: D1 > D3 > D2 > D4. Please see Figure 4 and Figure 6 The base 200 has a second mounting seat 203 protruding from the bottom of the first cavity 60. The second mounting seat 203 is embedded with a second bearing 84, and the tail end of the rotating shaft 31 is embedded in the second bearing 84.

[0033] The first retaining ring 83 (outer diameter D1, inner diameter D2) acts as a rigid mechanical stop, firmly securing the skeleton oil seal 81 (diameter D3) within the first mounting base 103, effectively preventing the skeleton oil seal 81 from falling off and ensuring the reliability of the sealing position. Furthermore, the first bearing 82 and the second bearing 84 provide stable support for the rotating shaft 31, greatly improving its rigidity and rotational accuracy, ensuring the uniformity of the air gap between the rotor assembly 30 and the stator assembly 20, resulting in smooth operation and extended service life.

[0034] In some specific embodiments, please refer to Figure 4 and Figure 6A second through hole 204 is provided on the base 200 body between the first cavity 60 and the second cavity 70. The second through hole 204 connects the first cavity 60 and the second cavity 70, providing a passage position for the lead wires that are electrically connected between the capacitor module 40 and the stator assembly 20.

[0035] In some specific embodiments, please refer to Figure 4 and Figure 6 A rectangular through hole 205 is provided on the base 200 body between the first cavity 60 and the second cavity 70; Figure 8 This diagram shows a three-dimensional structural schematic of the capacitor module in an embodiment of the present invention. The capacitor module 40 has a triangular protrusion 41 protruding from it. (See also...) Figure 4 The top of the triangular protrusion 41 is inserted into the rectangular through hole 205, and the side of the capacitor module 40 away from the triangular protrusion 41 is connected to the rear cover 300. After the triangular protrusion 41 is inserted into the rectangular through hole 205, the rear cover 300 can hold the capacitor module 40 in place, preventing the triangular protrusion 41 of the capacitor module 40 from coming out of the rectangular through hole 205. This allows the capacitor module 40 to be directly fixed in the second cavity 70 without the need for screws or other fasteners, making the operation convenient, quick, and easy to install and maintain.

[0036] For details, please refer to Figure 8 The top of the triangular protrusion 41 is rounded, which reduces stress concentration at the top of the triangular protrusion 41 and greatly improves the strength and fatigue life of the triangular protrusion 41; moreover, this eliminates the sharp corners, preventing operators from being scratched and improving product safety.

[0037] In some specific embodiments, please refer to Figure 4 and Figure 6 The base 200 has a first receiving groove 206 formed on the side that is in contact with the upper cover 100. The first sealing ring 51 is placed in the first receiving groove 206 and is elastically compressed by the pressure of the upper cover 100. Figure 9 This diagram shows the internal structure of the second cavity side of the base in an embodiment of the present invention. A second receiving groove 207 is formed on the side of the base 200 that connects to the rear cover 300; please refer to... Figure 4 and Figure 9The second sealing ring 52 is placed in the second receiving groove 207, and the second sealing ring 52 is elastically compressed by the pressure of the rear cover 300. By setting the first receiving groove 206 and the second receiving groove 207, a precise and restrictive installation position is provided for the first sealing ring 51 and the second sealing ring 52, which can firmly restrict the corresponding sealing rings on the preset track, effectively preventing any radial movement or torsion during the assembly process, and ensuring that they can be correctly and in their original state compressed.

[0038] Specifically, the compression range of the first sealing ring 51 is 30%~40%, and the compression range of the second sealing ring 52 is 30%~40%. This range of compression can generate sufficient and uniform sealing pressure between the sealing ring and the contact surface of the upper cover 100 (rear cover 300). Even under certain external water pressure and internal thermal expansion and contraction challenges, it can maintain an effective sealing interface and reliably block the intrusion path of moisture. Moreover, the compression range of 30%~40% is within the "comfort zone" of elastic deformation for commonly used rubber materials (such as NBR, EPDM, and silicone rubber). It can provide effective sealing force without generating excessive stress, thereby significantly slowing down the permanent compression deformation and stress relaxation of the material, ensuring the long service life and anti-aging performance of the sealing ring, and thus ensuring the long-term stability of the sealing performance.

[0039] Optionally, the compression of the first sealing ring 51 can be 30%, 35%, or 40%, and the compression of the second sealing ring 52 can be 30%, 35%, or 40%; preferably, the compression of the first sealing ring 51 is 35%, and the compression of the second sealing ring 52 is 35%, thus establishing a sealing barrier that is both sufficiently tight and durable.

[0040] In some specific embodiments, the outer casing 10 is a metal casing with excellent thermal conductivity, which can quickly dissipate the heat generated by the stator assembly 20 and other components into the surrounding air, enabling the outdoor waterproof motor to operate stably within a safe temperature range.

[0041] This utility model discloses an outdoor waterproof motor. Its first sealing ring 51, second sealing ring 52, skeleton oil seal 81, and aviation plug 90 form a comprehensive waterproof barrier, effectively preventing water damage in harsh environments such as rain, snow, and humidity. No additional waterproof protective box is required, thus avoiding increased size and weight of the entire drive system and facilitating installation. The first and second sealing rings 51 and 52 have a specific compression range (30%~40%), generating sufficient and uniform sealing pressure between the sealing rings and the upper cover 100 (rear cover 300). Even under certain external water pressure and internal thermal expansion and contraction challenges, an effective sealing interface is maintained, reliably blocking the intrusion path of moisture. Furthermore, the 30%~40% compression is within the "comfort zone" of elastic deformation for commonly used rubber materials; it provides effective sealing force without generating excessive stress, significantly reducing permanent compression deformation and stress relaxation, ensuring the long lifespan and anti-aging performance of the sealing rings, and consequently guaranteeing long-term stable sealing performance.

[0042] This utility model's outdoor waterproof motor creatively designs a physical isolation between the first cavity 60 and the second cavity 70. The first cavity 60 houses the heat-generating stator assembly 20 and rotor assembly 30, which are the motor's "hot zone." The second cavity 70 independently houses the capacitor module 40, isolating it from the main heat source and creating a relatively cool working environment. This layout greatly improves the service life and reliability of the capacitor module 40. Moreover, the compartmentalized design allows the capacitor module 40 to be maintained independently. If the capacitor module 40 needs to be replaced, simply opening the rear cover 300 allows access to the capacitor module 40 within the second cavity 70 without disturbing the core stator assembly 20 and rotor assembly 30. This greatly simplifies the maintenance process and reduces maintenance costs.

[0043] Furthermore, by employing an interference fit, the stator core's fixing part 21 is secured within the upper cover 100 and the base 200, avoiding the need for drilling holes in the outer casing 10 to fix the stator core. This maintains the structural strength and sealing integrity of the outer casing 10, further enhancing the motor's waterproof capability. Moreover, gaps exist between the outer circumferential surface of the stator core and the upper cover 100 and base 200, and between the two ends of the stator core and the upper cover 100 and base 200. This allows the stator core to expand freely towards both ends and radially when heated, effectively preventing the accumulation of axial and radial thermal stress.

[0044] In addition, the outer casing 10 is a metal casing with excellent thermal conductivity, which can quickly dissipate the heat generated by the stator assembly 20 and other components into the surrounding air, enabling the outdoor waterproof motor to operate stably within a safe temperature range.

[0045] After testing, the outdoor waterproof motor of this utility model has a protection rating of IP66. IP66 means that the product is completely protected against the intrusion of foreign objects and dust. When subjected to strong wave impact or heavy water spray, the amount of water entering the electrical appliance should not cause harmful effects. In other words, the outdoor waterproof motor of this utility model can maintain effective waterproofing in harsh environments such as rain, snow, and humidity, without the need for an additional waterproof protective box. It can be widely used in outdoor scenarios such as garden machinery, water pumps, outdoor ventilation equipment, and billboards.

[0046] The above provides a detailed description of an outdoor waterproof motor provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An outdoor waterproof motor, characterized in that, The system includes an outer casing, within which a stator assembly, a rotor assembly, and a capacitor module are disposed; The outer casing comprises, from top to bottom, a top cover, a base, and a rear cover that are fixedly connected in sequence. A first sealing ring is provided between the top cover and the base, and a second sealing ring is provided between the base and the rear cover. A first cavity is formed between the top cover and the base, and a second cavity is formed between the base and the rear cover. The stator assembly is fixedly disposed in the first cavity, the rotor assembly is rotatably disposed in the stator assembly, the rotor assembly has a rotating shaft, the head end of the rotating shaft protrudes outside the upper cover, and a skeleton oil seal is disposed between the rotating shaft and the upper cover; The capacitor module is fixedly disposed in the second cavity, and the capacitor module is electrically connected to the stator assembly. An aviation plug is fixedly installed on the rear cover, and the aviation plug is electrically connected to the capacitor module.

2. The outdoor waterproof motor as described in claim 1, characterized in that, A first mounting ring is formed radially on the side of the upper cover that connects with the base, and a second mounting ring is formed radially on the side of the base that connects with the upper cover. The outer contours of the first mounting ring and the second mounting ring are the same, and the first mounting ring and the second mounting ring are fixedly connected based on a first fastener.

3. The outdoor waterproof motor as described in claim 1, characterized in that, The back cover and the base are fixedly connected based on a second fastener. A positioning ring is protruding from the back cover and extends into the second cavity. The outer peripheral surface of the positioning ring is in clearance fit with the inner peripheral surface of the second cavity.

4. The outdoor waterproof motor as described in claim 1, characterized in that, The stator assembly includes a stator core and a stator winding wound on the stator core, the stator winding being electrically connected to the capacitor module; the rotor assembly includes a rotor, the rotating shaft being fixedly disposed in the rotor, and the rotor being rotatably disposed in the stator core based on the rotating shaft; The outer circumferential surface of the stator core is formed with a fixed fitting part. The upper half of the fixed fitting part is interference-fitted with the upper cover, and the lower half of the fixed fitting part is interference-fitted with the base. There is a first gap between the upper end of the stator core and the upper cover, and a second gap between the lower end of the stator core and the base.

5. The outdoor waterproof motor as described in claim 1, characterized in that, The inner top of the upper cover has a first mounting base protruding from it. The first mounting base is connected to the outside through a first through hole. The first mounting base is fitted with a first bearing, a first retaining ring and the skeleton oil seal in sequence from bottom to top. The head end of the rotating shaft passes through the first bearing, the first retaining ring, the skeleton oil seal and the first through hole in sequence. The outer diameter of the first retaining ring is D1, the inner diameter of the first retaining ring is D2, the diameter of the skeleton oil seal is D3, the diameter of the first through hole is D4, and the constraint relationship between D1, D2, D3 and D4 is: D1 > D3 > D2 > D4. The base has a second mounting seat protruding from the bottom of the first cavity, and a second bearing is embedded in the second mounting seat. The tail end of the rotating shaft is embedded in the second bearing.

6. The outdoor waterproof motor as described in claim 1, characterized in that, A second through hole is provided on the base body between the first cavity and the second cavity.

7. The outdoor waterproof motor as described in claim 1, characterized in that, A rectangular through hole is provided on the base body between the first cavity and the second cavity. A triangular protrusion is formed on the capacitor module. The top of the triangular protrusion is inserted into the rectangular through hole. The side of the capacitor module away from the triangular protrusion is connected to the back cover.

8. The outdoor waterproof motor as described in claim 7, characterized in that, The top of the triangular protrusion is rounded.

9. The outdoor waterproof motor as described in claim 1, characterized in that, The base has a first receiving groove formed on the side where it connects with the top cover. The first sealing ring is placed in the first receiving groove and is elastically compressed by the pressure of the top cover. The base has a second receiving groove formed on the side that connects with the back cover. The second sealing ring is placed in the second receiving groove and is elastically compressed by the pressure of the back cover.

10. The outdoor waterproof motor as described in claim 9, characterized in that, The compression range of the first sealing ring is 30% to 40%, and the compression range of the second sealing ring is 30% to 40%.

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