Waterproof motor for a sweeping robot
The multi-layer sealing structure solves the waterproofing problem of the robot vacuum cleaner motor in humid environments, achieving a long lifespan and safety for the motor, and expanding its application scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ZHENTAI MOTOR TECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-21
AI Technical Summary
The motors of existing robotic vacuum cleaners are prone to water ingress in humid environments, leading to problems such as short circuits and rust, which affect their performance and lifespan, and limit their application scenarios.
A waterproof motor was designed. Through a multi-layer sealing structure, including components such as an external snap-fit sleeve, a cover plate, a sealing sleeve, and a snap-fit block, the sealing performance of the motor output shaft and the motor body is enhanced, preventing moisture from entering the motor.
It effectively prevents moisture from entering the motor, avoids key components from getting damp and rusting or short-circuiting, extends the motor's lifespan, and expands the scope of use and safety of the robot vacuum cleaner.
Smart Images
Figure CN224537911U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a waterproof motor for a robotic vacuum cleaner, belonging to the technical field of robotic vacuum cleaner motors. Background Technology
[0002] A robotic vacuum cleaner is a smart home appliance that automatically cleans floors. It typically features multiple sensors, such as lidar, cameras, and infrared sensors. Lidar creates a map of the surrounding environment by emitting laser beams and measuring the time it takes for the reflected light to travel. Cameras capture images of the surroundings and use visual algorithms for environmental recognition and localization. Infrared sensors detect obstacles and boundaries. The advent of robotic vacuum cleaners has greatly reduced the burden of housework, providing a more convenient and efficient cleaning method. With continuous technological advancements, the performance and functionality of robotic vacuum cleaners are constantly improving, and future breakthroughs are expected in cleaning effectiveness, intelligence, and user-friendly design. Through the coordinated work of these sensors, robotic vacuum cleaners can accurately perceive their own position and surrounding environment, planning a reasonable cleaning path. They require waterproof motors for power.
[0003] Although some robotic vacuum cleaners claim to be waterproof, the waterproof rating of most products is not suitable for all humid environments. If they come into contact with a large amount of water or are in a humid environment for a long time, there is still a risk of water entering the motor. Once water enters, it can cause serious problems such as short circuits and burnout, damaging the motor or even the entire robotic vacuum cleaner. Over time, water can seep into the motor, causing the motor components to rust and corrode, affecting its performance and lifespan. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a waterproof motor for robotic vacuum cleaners. This motor effectively waterproofs the internal motor of the robotic vacuum cleaner, extending its service life, expanding its application range, and enhancing its safety and stability. It effectively prevents moisture from entering the motor, avoiding rust and short circuits in key components such as coils and circuit boards due to moisture, thereby extending the motor's lifespan and reducing repair or replacement costs caused by motor failures. It eliminates concerns about motor damage from moisture contact, greatly expanding the application scenarios and scope of use for robotic vacuum cleaners.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: a waterproof motor for a sweeping robot, comprising a motor body, a second inner ring groove fixedly provided at the front edge of the motor body, an outer snap-fit sleeve slidably provided on the inner wall of the second inner ring groove, a cover plate fixedly provided in the middle of the outer snap-fit sleeve, a central sealing plate fixedly provided in the middle of the cover plate, a second sealing sleeve fixedly provided in the middle of the outer side of the central sealing plate, a first sealing sleeve provided in the inner side of the second sealing sleeve, and the right end of the first sealing sleeve fixedly connected to the middle of the outer side of the central sealing plate.
[0006] The second inner ring groove is provided with a slot near the edge, and a locking block is slidably provided on the inner wall of the slot. The bottom of the locking block is fixedly provided on the outside of the outer locking sleeve.
[0007] Preferably, the second sealing sleeve is conical, and the inner wall of the outer end of the conical second sealing sleeve is slidably connected to the outer circumferential surface of the outer end of the first sealing sleeve. The inner diameter of the first sealing sleeve is the same as the outer diameter of the motor output shaft. The second sealing sleeve is fitted at the position of the motor output shaft. Through the cooperation between the second sealing sleeve and the first sealing sleeve, moisture is prevented from entering the motor from the position of the motor output shaft, thus protecting the integrity of the internal parts of the motor.
[0008] Preferably, there is a space between the right end of the first sealing sleeve and the second sealing sleeve. The first sealing sleeve is cylindrical and its diameter is larger than that of the motor output shaft. There is no gap between the first sealing sleeve and the middle sealing plate. Through the gap between the first sealing sleeve and the second sealing sleeve, some water can be buffered to prevent water from directly entering the motor.
[0009] Preferably, the inner edge of the outer snap-fit sleeve is provided with a first inner ring groove, the outer side of the inner wall of the first inner ring groove is slidably sleeved with the inner side of the inner wall of the second inner ring groove, both the first inner ring groove and the second inner ring groove are inward grooves, and the first inner ring groove and the second inner ring groove are snapped together after contact, so that the outer sealing cover can be tightly snapped and overlapped with the motor port when assembling the motor, thereby increasing its sealing performance.
[0010] Preferably, a fixing bolt is slidably engaged in the middle of the outer side of the locking block. The middle of the fixing bolt is threaded into the edge of the left end of the motor body. A threaded sleeve is provided between the fixing bolt and the motor body. When the motor is assembled, the outer locking sleeve is sleeved on the motor body and engaged with the locking block and the locking slot. The fixing bolt is inserted into the locking block. When the fixing bolt is inserted, it directly contacts the locking block to prevent the fixing bolt from being inserted into the motor body, avoids the formation of holes, and further increases the sealing performance.
[0011] Preferably, fixed rings are fixedly sleeved at both ends of the outer side of the motor body. Power grooves are provided on both sides of the fixed rings near the bottom. A support rod is rotatably installed in the middle of the inner wall of the power groove via a rotating rod. The support rod consists of two sections, with a central rotating shaft threaded into the middle section. A bottom support plate is fixedly installed at the bottom of the motor body. After the motor is installed inside the sweeping robot, the distance between the motor body and the bottom of the sweeping robot can be adjusted according to the usage environment. The support rod prevents the motor body from directly contacting the bottom of the inner wall of the sweeping robot.
[0012] Preferably, an outer collar is fixedly provided in the middle of the central sealing plate. The diameter of the outer collar is larger than the diameter of the second sealing sleeve. The edge of the outer collar is set in a straight line. The length of the outer collar is smaller than the length of the second sealing sleeve. This not only buffers the water source entering the output shaft position, but also protects the second sealing sleeve through the outer collar. When the motor is tilted, the water source flows out from the edge of the outer collar.
[0013] The beneficial effects of this utility model are:
[0014] 1. This robotic vacuum cleaner uses a waterproof motor. The motor is sealed at one end by an external snap-fit sleeve that drives a cover plate on one side and a central sealing plate. The cooperation of the first and second sealing sleeves increases the sealing between the motor output shaft and the motor body, which can effectively prevent moisture from entering the motor and avoid the coils, circuit boards and other key components inside the motor from rusting or short-circuiting due to moisture, thereby extending the service life of the motor.
[0015] 2. This robotic vacuum cleaner uses a waterproof motor. Through the cooperation of the first inner ring groove and the second inner ring groove, the locking block is engaged inside the groove, preventing gaps from being created between the bolts and the housing during the assembly of motor parts. This prevents water from entering the motor and eliminates concerns about the motor being damaged by contact with water. This greatly expands the application scenarios and usage range of the robotic vacuum cleaner, ensures the safety of users when using the robotic vacuum cleaner, and prevents leakage due to water entering the motor. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 This is a schematic diagram of the front structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the left end structure in this utility model;
[0019] Figure 4 This is a top view of the present invention;
[0020] Figure 5 This is an exploded view of the external snap-fit sleeve and the motor body in this utility model;
[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the cover plate in this utility model.
[0022] In the diagram: 1. Motor body; 2. Power slot; 3. Fixing ring; 4. Outer collar; 5. Supporting diagonal rod; 6. Outer snap-fit sleeve; 7. First sealing sleeve; 8. Slot; 9. Clip; 10. Second sealing sleeve; 11. First inner ring groove; 12. Middle sealing plate; 13. Cover plate; 14. Second inner ring groove; 15. Bottom support plate; 16. Middle rotating shaft; 17. Fixing bolt. Detailed Implementation
[0023] 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.
[0024] Please see Figures 1-5 As shown, a waterproof motor for a robotic vacuum cleaner includes a motor body 1. Fixed rings 3 are fixedly sleeved at both ends of the outer side of the body 1. Power grooves 2 are provided on both sides of the fixed rings 3 near the bottom. A support rod 5 is rotatably mounted on the middle of the inner wall of the power groove 2 via a rotating rod. The support rod 5 consists of two sections, with a central rotating shaft 16 threaded into the middle. A bottom support plate 15 is fixedly mounted on the bottom of the motor body 1. After the motor is installed inside the robotic vacuum cleaner, the distance between the motor body 1 and the bottom of the robotic vacuum cleaner can be adjusted according to the usage environment. The support rod 5 prevents the motor body 1 from directly contacting the bottom of the inner wall of the robotic vacuum cleaner.
[0025] A second inner ring groove 14 is fixedly provided at the front edge of the motor body 1. An outer snap-fit sleeve 6 is slidably provided on the inner wall of the second inner ring groove 14. A first inner ring groove 11 is provided at the edge of the inner side of the outer snap-fit sleeve 6. The outer side of the inner wall of the first inner ring groove 11 is slidably sleeved with the inner side of the inner wall of the second inner ring groove 14. Both the first inner ring groove 11 and the second inner ring groove 14 are inward grooves. After the first inner ring groove 11 and the second inner ring groove 14 come into contact, they snap together, so that the outer sealing cover can be tightly snapped and overlapped with the motor port when assembling the motor, thereby increasing its sealing performance.
[0026] A cover plate 13 is fixedly installed in the middle of the outer snap-fit sleeve 6. A middle closing plate 12 is fixedly installed in the middle of the cover plate 13. An outer collar 4 is fixedly installed in the middle of the middle closing plate 12. The diameter of the outer collar 4 is larger than the diameter of the second sealing sleeve 10. The edge of the outer collar 4 is set in a straight line. The length of the outer collar 4 is smaller than the length of the second sealing sleeve 10. This not only buffers the water source entering the output shaft position, but also protects the second sealing sleeve 10 through the outer collar 4. When the motor is tilted, the water source flows out from the edge of the outer collar 4.
[0027] A second sealing sleeve 10 is fixedly installed in the middle of the outer side of the central sealing plate 12. The second sealing sleeve 10 is conical. The inner wall of the outer end of the conical second sealing sleeve 10 is slidably connected to the outer circumferential surface of the outer end of the first sealing sleeve 7. A space is provided between the right end of the first sealing sleeve 7 and the second sealing sleeve 10. The first sealing sleeve 7 is cylindrical and its diameter is larger than that of the motor output shaft. There is no gap between the first sealing sleeve 7 and the central sealing plate 12. Through the gap between the first sealing sleeve 7 and the second sealing sleeve 10, some water can be buffered to prevent water from directly entering the motor. This avoids the coils, circuit boards and other key components inside the motor from rusting or short-circuiting due to moisture, thereby extending the service life of the motor and reducing the maintenance or replacement costs caused by motor failure.
[0028] The inner diameter of the first sealing sleeve 7 is the same as the outer diameter of the motor output shaft. A second sealing sleeve 10 is fitted at the motor output shaft position. The cooperation between the second sealing sleeve 10 and the first sealing sleeve 7 prevents moisture from entering the motor from the motor output shaft position and protects the integrity of the internal parts of the motor.
[0029] The inner side of the second sealing sleeve 10 is provided with the first sealing sleeve 7, and the right end of the first sealing sleeve 7 is fixedly connected to the middle part of the outer side of the middle sealing plate 12.
[0030] The second inner ring groove 14 is provided with a slot 8 near the edge, and a locking block 9 is slidably provided on the inner wall of the slot 8. The bottom of the locking block 9 is fixedly provided on the outside of the outer locking sleeve 6.
[0031] 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.
[0032] 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. A waterproof motor for a robotic vacuum cleaner, comprising a motor body (1), characterized in that: The motor body (1) has a second inner ring groove (14) fixedly provided at the front edge position. An outer snap sleeve (6) is slidably provided on the inner wall of the second inner ring groove (14). A cover plate (13) is fixedly provided in the middle of the outer snap sleeve (6). A middle closing plate (12) is fixedly provided in the middle of the cover plate (13). A second sealing sleeve (10) is fixedly provided in the middle of the outer side of the middle closing plate (12). A first sealing sleeve (7) is provided on the inner side of the second sealing sleeve (10). The right end of the first sealing sleeve (7) is fixedly connected to the middle of the outer side of the middle closing plate (12). The second inner ring groove (14) is provided with a slot (8) near the edge. A block (9) is slidably provided on the inner wall of the slot (8). The bottom of the block (9) is fixedly provided on the outside of the outer snap sleeve (6).
2. The waterproof motor for a sweeping robot as described in claim 1, characterized in that: The second sealing sleeve (10) is set to be conical. The inner wall of the outer end of the conical second sealing sleeve (10) is slidably connected to the outer circumferential surface of the outer end of the first sealing sleeve (7). The inner wall diameter of the first sealing sleeve (7) is the same as the outer diameter of the motor output shaft.
3. The waterproof motor for a sweeping robot as described in claim 1, characterized in that: There is a space between the right end of the first sealing sleeve (7) and the second sealing sleeve (10). The first sealing sleeve (7) is cylindrical and its diameter is larger than that of the motor output shaft. There is no gap between the first sealing sleeve (7) and the middle sealing plate (12).
4. The waterproof motor for a sweeping robot as described in claim 1, characterized in that: The outer snap sleeve (6) has a first inner ring groove (11) at the edge position on the inner side. The outer side of the inner wall of the first inner ring groove (11) is slidably sleeved with the inner side of the inner wall of the second inner ring groove (14). Both the first inner ring groove (11) and the second inner ring groove (14) are inward grooves.
5. The waterproof motor for a sweeping robot as described in claim 1, characterized in that: A fixing bolt (17) is slidably engaged in the middle of the outer side of the locking block (9). The middle part of the fixing bolt (17) is threadedly inserted into the edge of the left end of the motor body (1). A threaded sleeve is provided between the fixing bolt (17) and the motor body (1).
6. The waterproof motor for a sweeping robot as described in claim 1, characterized in that: Fixed rings (3) are fixedly sleeved at both ends of the outer side of the motor body (1). Power grooves (2) are provided on both sides of the fixed rings (3) near the bottom. A support rod (5) is provided in the middle of the inner wall of the power groove (2) through a rotating rod. The support rod (5) consists of two sections and a central rotating shaft (16) is threaded into the middle section. A bottom support plate (15) is fixedly provided at the bottom of the motor body (1).
7. The waterproof motor for a sweeping robot as described in claim 1, characterized in that: An outer collar (4) is fixedly provided in the middle of the central sealing plate (12). The diameter of the outer collar (4) is greater than the diameter of the second sealing sleeve (10). The edge of the outer collar (4) is set in a straight line. The length of the outer collar (4) is less than the length of the second sealing sleeve (10).