Energy-saving waterproof micro motor
By introducing a sealing ring and heat sink design into the micro motor, combined with magnetic field-driven cooling fan blades, the contradiction between waterproofing and heat dissipation in micro motors is resolved, thereby improving both waterproofing performance and heat dissipation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-03
AI Technical Summary
There is a contradiction between waterproofing and heat dissipation in micro motors. Sealing can lead to water leakage and heat accumulation, which affects the service life.
It adopts a sealing ring and heat dissipation shroud design, combined with a cooling fan and magnetic field driven cooling fan blades, to achieve both waterproofing and heat dissipation.
It improves the waterproof performance of micro motors, while also enhancing heat dissipation efficiency without increasing power, thus extending the motor's service life.
Smart Images
Figure CN223967728U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of micro motor technology, and more specifically to an energy-saving waterproof micro motor. Background Technology
[0002] Miniature motors are small in size and capacity, with an output power typically below several hundred watts. They are electromagnetic devices that convert electrical energy into mechanical energy and play a crucial role in many fields such as small mechanical equipment, electronic equipment, and precision instruments. Miniature motors contain stator and rotor windings made of conductive materials. When the motor comes into contact with water, which is conductive, the insulation performance of the motor windings will degrade. If water enters the motor and comes into contact with live parts, it may cause short circuits between the windings or between the windings and the motor casing.
[0003] These miniature motors are often used in household appliances. Due to the temperature difference between the inside and outside, these motors can become damp and condensate can easily form inside. To prevent this condensate from entering the motor, a waterproof structure is usually installed on the outside of the motor.
[0004] However, in practice, it has been noted that while micro motors require sealing around the casing for waterproofing, water may leak from the connection point of the output shaft due to its rotation. Furthermore, the motor generates heat during operation, and the sealed casing prevents this heat from dissipating in time. Over time, this can cause the micro motor to overheat and damage the internal winding structure, ultimately leading to burnout and unusability. Utility Model Content
[0005] The purpose of this invention is to provide an energy-saving, waterproof micro motor. A sealing ring is installed at one end of the motor to prevent water leakage at the connection point, while a sealed heat sink is installed at the other end. Together with an internal cooling fan, heat is quickly dissipated through a conduit, improving both waterproofing and heat dissipation. This addresses the technical problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An energy-saving waterproof micro motor includes a sealed housing, the sealed housing having a metal shell, and a wire slot for installing a waterproof wiring shell is provided on the side of the metal shell, and the waterproof wiring shell is snapped into the inside of the wire slot.
[0008] A sealing cover is fixedly connected to one end of the metal casing, and a sealing heat sink is fixedly connected to the other end of the metal casing. The side of the sealing cover is integrally provided with a positioning ring that is inserted into the metal casing. The side of the sealing cover also has a motor shaft passing through it, and a sealing shaft ring corresponding to the motor shaft is integrally provided on the sealing cover.
[0009] The outer side of the positioning ring and the inner side of the sealing ring are respectively fixedly connected with sealing rings. The sealing ring on the outer side of the positioning ring is in contact with the metal shell, while the sealing ring on the inner side of the sealing ring is in contact with the motor shaft.
[0010] As a further technical solution of this utility model, the metal shell is provided with heat dissipation vents in a ring array at the end away from the sealing cover, and a fixed shaft is fixedly connected to the center of the metal shell, and a shaft groove corresponding to the fixed shaft is also provided on the side of the sealing cover.
[0011] As a further technical solution of this utility model, the sealed heat dissipation cover has a waterproof outer shell that communicates with the inner side of the heat dissipation port. An external wire sleeve is integrally provided at the end of the waterproof outer shell away from the heat dissipation port, and the external wire sleeve communicates with the inner side of the waterproof outer shell.
[0012] As a further technical solution of this utility model, a sealing groove is provided at one end of the waterproof outer shell near the metal outer shell, and the end of the metal outer shell is fitted with the sealing groove.
[0013] As a further technical solution of this utility model, a cooling fan is movably connected to the inner side of the metal shell. The cooling fan has a rotating disk movably connected to the end of the motor shaft, and cooling fan blades are fixedly connected to the outer side of the rotating disk in a ring array.
[0014] As a further technical solution of this utility model, the end of the rotating disk away from the heat dissipation port is respectively arranged in a ring array with a magnetic shielding plate and a driving magnet, and the magnetic shielding plate and the driving magnet are distributed at intervals. The magnetic shielding plate is integrally set with the rotating disk, while the driving magnet is embedded in the end of the rotating disk.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] In this invention, a sealing cap is placed over the end of a metal casing, and a positioning ring is inserted into the inside of the metal casing to provide positioning. The sealing ring installed on the inside of the sealing ring can increase the sealing effect between the sealing cap and the motor shaft, preventing water from seeping inward during the rotation of the motor shaft, thereby improving the waterproof effect.
[0017] In this invention, when the magnetic field inside the metal casing changes, it drives the inner rotor to rotate. At the same time, the rotating disk on the side is also affected by the magnetic field and rotates along with the rotor, thereby driving the cooling fan blades to rotate. This improves the heat dissipation effect without increasing the power of the micro motor, thus improving the heat dissipation effect while taking into account the energy-saving effect of the motor.
[0018] In this invention, the cooling fan transfers heat from the inside of the metal casing into the waterproof casing when it rotates. During installation, an exhaust pipe needs to be installed at the end of the outer conduit to quickly dissipate the heat inside without affecting the waterproof performance of the micro motor. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model in use.
[0020] Figure 2 This utility model Figure 1 A schematic diagram of the bottom structure.
[0021] Figure 3 This is a schematic diagram of the internal structure of the sealed outer shell in this utility model.
[0022] Figure 4 This utility model Figure 3 Another perspective view.
[0023] Figure 5 This is a three-dimensional structural diagram of the sealed heat dissipation cover in this utility model.
[0024] Figure 6 This is a three-dimensional structural diagram of the cooling fan in this utility model.
[0025] Figure 7 This utility model Figure 6 A magnified view of a portion of the image.
[0026] Figure 8 This is a three-dimensional structural diagram of the sealing cap in this utility model.
[0027] In the picture:
[0028] Motor shaft-1, sealing cover-2, shaft groove-21, positioning ring-22, sealing rubber ring-23, sealing shaft ring-24, sealing outer shell-3, metal outer shell-31, wire slot-32, heat dissipation port-33, sealing heat dissipation cover-4, waterproof outer shell-41, external conduit sleeve-42, sealing slot-43, waterproof wiring shell-5, fixed shaft-6, cooling fan-7, rotating disk-71, cooling fan blades-72, magnetic shielding plate-73, drive magnet-74. Detailed Implementation
[0029] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figure 1-8 This utility model embodiment provides an energy-saving waterproof micro motor, including a sealed housing 3, the sealed housing 3 having a metal housing 31, the side of the metal housing 31 having a wire slot 32 for installing a waterproof wiring housing 5, and the waterproof wiring housing 5 being snapped into the inside of the wire slot 32.
[0031] A sealing cover 2 is fixedly connected to one end of the metal housing 31, and a sealing heat sink 4 is fixedly connected to the other end of the metal housing 31. The side of the sealing cover 2 is integrally provided with a positioning ring 22 that is inserted into the metal housing 31. The side of the sealing cover 2 also has a motor shaft 1 passing through it, and the sealing cover 2 is integrally provided with a sealing shaft ring 24 corresponding to the motor shaft 1.
[0032] The outer side of the positioning ring 22 and the inner side of the sealing ring 24 are respectively fixedly connected with sealing rings 23. The sealing ring 23 on the outer side of the positioning ring 22 is in contact with the metal shell 31, while the sealing ring 23 on the inner side of the sealing ring 24 is in contact with the motor shaft 1.
[0033] In this embodiment, the metal shell 31 has heat dissipation vents 33 arranged in a ring array at the end away from the sealing cover 2, and a fixed shaft 6 is fixedly connected to the center of the metal shell 31. The side of the sealing cover 2 also has a shaft groove 21 corresponding to the fixed shaft 6.
[0034] By adopting the above technical solution, the sealing cover 2 is placed over the end of the metal housing 31, and the positioning ring 22 is inserted into the inside of the metal housing 31 to play a positioning role. The sealing ring 23 installed on the inside of the sealing shaft ring 24 can increase the sealing effect between the sealing cover 2 and the motor shaft 1, prevent water from seeping inward during the rotation of the motor shaft 1, and thus improve the waterproof effect.
[0035] Furthermore, the sealed heat dissipation cover 4 has a waterproof outer shell 41 that communicates with the inner side of the heat dissipation port 33. The waterproof outer shell 41 is integrally provided with an outer wire sleeve 42 at one end away from the heat dissipation port 33, and the outer wire sleeve 42 communicates with the inner side of the waterproof outer shell 41.
[0036] More specifically, the waterproof outer shell 41 has a sealing groove 43 at one end near the metal outer shell 31, and the end of the metal outer shell 31 is fitted with the sealing groove 43.
[0037] By adopting the above technical solution, when the cooling fan 7 rotates, it sends the heat inside the metal casing 31 into the waterproof casing 41. During installation, an exhaust pipe needs to be installed at the end of the outer conduit sleeve 42 so that the heat inside can be quickly discharged without affecting the waterproof effect of the micro motor.
[0038] Furthermore, a cooling fan 7 is movably connected to the inner side of the metal casing 31. The cooling fan 7 has a rotating disk 71 movably connected to the end of the motor shaft 1. Cooling fan blades 72 are fixedly connected to the outer side of the rotating disk 71 in a ring array.
[0039] Furthermore, at the end of the rotating disk 71 away from the heat dissipation port 33, magnetic shielding plates 73 and driving magnets 74 are respectively arranged in a ring array, and the magnetic shielding plates 73 and driving magnets 74 are distributed at intervals. The magnetic shielding plates 73 are integrally formed with the rotating disk 71, while the driving magnets 74 are embedded in the end of the rotating disk 71.
[0040] By adopting the above technical solution, when the magnetic field inside the metal casing 31 changes, it will drive the inner rotor to rotate. At the same time, the rotating disk 71 on the side is also affected by the magnetic field and rotates with the rotor, thereby driving the cooling fan blades 72 to rotate. This improves the heat dissipation effect without increasing the power of the micro motor, thus improving the heat dissipation effect while taking into account the energy-saving effect of the motor.
[0041] Furthermore, a triangular groove is integrally provided on the outer side of the outer conduit sleeve 42 to attach the heat dissipation pipe to the end of the outer conduit sleeve 42. Then, the connection is locked with a clamping plate, which can lead the hot air out of the inner side of the metal shell 31 without affecting the sealing effect.
[0042] Furthermore, the end of the fixed shaft 6 passes through the rotating disk 71 and is fixedly connected to the end of the metal housing 31. The rotating disk 71 can rotate at the end of the fixed shaft 6, and the rotating heat dissipation fan blades 72 can guide the hot airflow from the inside of the metal housing 31 to the inside of the waterproof housing 41.
[0043] Furthermore, a rubber ring is fixedly connected between the waterproof outer shell 41 and the metal outer shell 31 to seal the connection, and the connection between the waterproof outer shell 41 and the metal outer shell 31 is fixedly connected by locking screws.
[0044] The working principle of this utility model is as follows: In use, firstly, the waterproof outer shell 41 is fitted onto the end of the metal outer shell 31 away from the motor shaft 1, and the end of the metal outer shell 31 is inserted into the inner side of the sealing groove 43. Then, the heat dissipation pipe is fitted onto the end of the outer wire tube sleeve 42. Then, the connection is locked with a clamp. Finally, the micro motor is fixed in the position of use. The sealing rubber ring 23 on the outside of the positioning ring 22 and the sealing rubber ring 23 on the inside of the sealing shaft ring 24 can ensure the sealing effect between the sealing cover 2 and the motor shaft 1, as well as between the sealing cover 2 and the metal outer shell 31. When the stator inside the metal outer shell 31 drives the internal rotor to rotate through the rotating magnetic field, the rotating magnetic field will cooperate with the driving magnet 74, thereby causing the rotating disk 71 to drive the heat dissipation fan blade 72 to rotate, blowing the heat inside the metal outer shell 31 to the inside of the waterproof outer shell 41 through the heat dissipation port 33. Finally, the heat is discharged through the heat dissipation pipe at the end of the outer wire tube sleeve 42, improving the internal sealing effect of the micro motor while ensuring the internal heat dissipation effect.
[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An energy-saving waterproof micro motor, characterized in that: Includes a sealed housing (3), the sealed housing (3) has a metal housing (31), the side of the metal housing (31) is provided with a wire slot (32) for installing a waterproof wiring housing (5), and the waterproof wiring housing (5) is snapped into the inside of the wire slot (32); A sealing cover (2) is fixedly connected to one end of the metal casing (31), and a sealing heat sink (4) is fixedly connected to the other end of the metal casing (31). The side of the sealing cover (2) is integrally provided with a positioning ring (22) inserted into the metal casing (31). The side of the sealing cover (2) also has a motor shaft (1) passing through it, and the sealing cover (2) is integrally provided with a sealing shaft ring (24) corresponding to the motor shaft (1). The outer side of the positioning ring (22) and the inner side of the sealing ring (24) are respectively fixedly connected with sealing rings (23). The sealing ring (23) on the outer side of the positioning ring (22) is in contact with the metal shell (31), while the sealing ring (23) on the inner side of the sealing ring (24) is in contact with the motor shaft (1).
2. The energy-saving waterproof micro motor according to claim 1, characterized in that: The metal shell (31) has heat dissipation vents (33) arranged in a ring array at one end away from the sealing cover (2), and a fixed shaft (6) is fixedly connected to the center of the metal shell (31). The side of the sealing cover (2) also has a shaft groove (21) corresponding to the fixed shaft (6).
3. The energy-saving waterproof micro motor according to claim 2, characterized in that: The sealed heat sink (4) has a waterproof outer shell (41) that communicates with the inside of the heat sink (33). The waterproof outer shell (41) is integrally provided with an outer wire sleeve (42) at one end away from the heat sink (33), and the outer wire sleeve (42) communicates with the inside of the waterproof outer shell (41).
4. The energy-saving waterproof micro motor according to claim 3, characterized in that: The waterproof outer shell (41) has a sealing groove (43) at one end near the metal outer shell (31), and the end of the metal outer shell (31) is in contact with the sealing groove (43).
5. The energy-saving waterproof micro motor according to claim 4, characterized in that: The inner side of the metal shell (31) is also movably connected to a cooling fan (7), the cooling fan (7) has a rotating disk (71) movably connected to the end of the motor shaft (1), and the outer side of the rotating disk (71) is fixedly connected with cooling fan blades (72) in a ring array.
6. The energy-saving waterproof micro motor according to claim 5, characterized in that: The rotating disk (71) is provided with a magnetic shielding plate (73) and a driving magnet (74) in a ring array at the end away from the heat dissipation port (33), and the magnetic shielding plate (73) and the driving magnet (74) are distributed at intervals. The magnetic shielding plate (73) is integrally provided with the rotating disk (71), while the driving magnet (74) is embedded in the end of the rotating disk (71).