Motor with water blocking structure
By designing cooling and heat dissipation components on the motor, and utilizing bevel gear transmission and heat-conducting plate structure, the problem of poor heat dissipation under the waterproof housing is solved, achieving efficient heat dissipation and waterproofing, extending the motor's service life and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING BAOYOU ELECTROMECHANICAL CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-03
AI Technical Summary
Poor heat dissipation of the motor under the waterproof housing can cause a sharp rise in internal temperature, potentially leading to overheating problems.
A motor with a water-blocking structure was designed, including a cooling component and a heat dissipation component. It uses bevel gear transmission to drive the heat dissipation fan blades to rotate, and heat is transferred and discharged through the heat dissipation cylinder and heat dissipation pipe. The air flow and heat dissipation are accelerated by the heat conduction plate and the heat dissipation fan blades.
Effective heat dissipation and waterproofing measures have been implemented, reducing motor failures caused by overheating or water droplet corrosion, extending service life, and reducing energy consumption.
Smart Images

Figure CN224459469U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of motor technology and relates to a motor with a water-blocking structure. Background Technology
[0002] A motor is a device that converts electrical energy into mechanical energy. Motors have a wide range of applications, covering multiple fields such as automobile manufacturing, consumer electronics, and machine tools. They are closely linked to the prosperity of the overall manufacturing industry and come in various types, including brushless DC motors, hydraulic motors, and piston pneumatic motors.
[0003] Motors may be affected by the surrounding environment during use, such as splashing water droplets. To prevent water from getting on the motor, a waterproof casing is often installed. However, the design of the waterproof casing is often quite sealed to reduce the possibility of water entering the motor. But this sealing also restricts air convection between the motor and the outside, making it difficult for the heat generated by the motor to be effectively dissipated into the environment. Prolonged high-load operation, coupled with poor heat dissipation, may cause the internal temperature of the motor to rise sharply, leading to overheating problems. Therefore, we have made an improvement and proposed a motor with a water-blocking structure. Utility Model Content
[0004] The technical problem this invention aims to solve is that installing a waterproof casing makes it difficult for the heat generated by the motor to be effectively dissipated into the environment. Prolonged high-load operation, coupled with poor heat dissipation, may cause the internal temperature of the motor to rise sharply, leading to overheating.
[0005] The present invention discloses a motor with a water-blocking structure, comprising a mounting base, a waterproof housing mounted on the mounting base, a motor body mounted inside the waterproof housing, an output shaft mounted on the motor body, the output shaft being rotatably connected to one end of the waterproof housing, a cooling component mounted on the end of the output shaft located inside the waterproof housing, and a connecting rear cover mounted on the end of the waterproof housing away from the output shaft, the connecting rear cover containing a heat dissipation component.
[0006] The cooling assembly includes a first bevel gear, which is mounted on one end of the output shaft located inside a waterproof housing. The first bevel gear is symmetrically meshed with two second bevel gears. A drive shaft is mounted on the second bevel gear, and a mounting bracket is mounted on the drive shaft. A heat sink is mounted on the mounting bracket.
[0007] The drive shaft is equipped with a cooling fan blade at the end away from the bevel gear. One end of each of the two cooling cylinders is installed on the inner wall of the same waterproof housing. The cooling cylinders are connected to multiple cooling pipes via two connecting pipes. The multiple cooling pipes are installed on the inner wall of the same waterproof housing. An air outlet is installed at the end of each of the two connecting pipes away from the cooling cylinders.
[0008] The heat dissipation assembly includes a mounting bracket, which is fixed to the inner wall of the connecting back cover. A connecting shaft is rotatably connected to the mounting bracket. One end of the connecting shaft is connected to one end of the output shaft on the motor body. A second heat dissipation fan blade is installed on the end of the connecting shaft away from the output shaft.
[0009] Multiple heat-conducting plates are installed in a ring on the upper part of the connecting back cover. The end of the heat-conducting plate away from the connecting back cover is installed in a ring on the outside of the motor body. Multiple heat dissipation holes are opened on the connecting back cover.
[0010] Four fixing blocks are installed in a ring on the connecting back cover and the waterproof shell. The fixing blocks are connected to the connecting back cover and the waterproof shell by fixing bolts. The mounting base has four mounting holes.
[0011] Compared with the prior art, the beneficial effects of this utility model are: the cooling components and waterproof housing enable the motor to effectively dissipate heat and provide waterproofing during use, which helps to reduce the failure and damage of the motor body caused by overheating or water droplet corrosion, thereby extending the service life of the motor body; the transmission of bevel gear and drive shaft enables the rapid rotation of cooling fan blades, thereby improving heat dissipation efficiency.
[0012] The second cooling fan blade is directly driven by the output shaft of the motor body, eliminating the need for an additional power source and reducing energy consumption. Simultaneously, the rotation of the second cooling fan blade not only blows out water droplets entering through the ventilation holes but also accelerates airflow within the waterproof casing, improving heat dissipation efficiency. The addition of heat-conducting fins further enhances the heat dissipation effect. By transferring the heat generated by the motor to the larger heat-conducting fins, which are then cooled by the airflow blown out by the second cooling fan blade, rapid heat dissipation is achieved. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a structural schematic diagram of the cross-section of the waterproof outer shell of this utility model.
[0016] Figure 3 This is a schematic diagram of the cooling component of this utility model.
[0017] Figure 4This is a schematic diagram of the structure of the heat sink of this utility model.
[0018] Figure 5 This is a structural schematic diagram of the cross-section of the connecting back cover of this utility model.
[0019] Figure 6 This is a schematic diagram of the structure of the present invention, showing the separation of the connecting back cover.
[0020] In the diagram: 1. Mounting base; 2. Waterproof housing; 3. Motor body; 4. Output shaft; 5. Bevel gear one; 6. Bevel gear two; 7. Heat sink; 8. Mounting bracket; 9. Drive shaft; 10. Cooling fan blade one; 11. Heat dissipation pipe; 12. Connecting pipe; 13. Air outlet; 14. Cooling fan blade two; 15. Heat-conducting fin; 16. Connecting back cover; 17. Heat dissipation hole; 18. Connecting shaft; 19. Fixing block one; 20. Fixing bracket; 21. Fixing bolt; 22. Mounting hole. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] Example 1
[0026] like Figures 1-6 As shown, a motor with a water-blocking structure includes a mounting base 1, on which a waterproof housing 2 is mounted. The waterproof housing 2 effectively prevents water droplets from directly intruding into the motor body 3. The motor body 3 is installed inside the waterproof housing 2, and an output shaft 4 is mounted on the motor body 3. The output shaft 4 is rotatably connected to one end of the waterproof housing 2. A cooling component is installed on the end of the output shaft 4 located inside the waterproof housing 2. A connecting rear cover 16 is installed on the end of the waterproof housing 2 away from the output shaft 4, and a heat dissipation component is installed inside the connecting rear cover 16. The heat dissipation component, in conjunction with the cooling component, reduces excessive heat generation of the motor body inside the waterproof housing 2 during operation.
[0027] The cooling assembly includes a bevel gear 5, which is mounted on one end of the output shaft 4 located inside the waterproof housing 2. The bevel gear 5 is symmetrically meshed with two bevel gears 6. A drive shaft 9 is mounted on the bevel gears 6. A mounting bracket 8 is mounted on the drive shaft 9. A heat sink 7 is mounted on the mounting bracket 8. A heat dissipation fan blade 10 is mounted on the end of the drive shaft 9 away from the bevel gear 5. One end of the two heat sinks 7 is mounted on the same inner wall of the waterproof housing 2. The heat sink 7 is connected to multiple heat dissipation pipes 11 through two connecting pipes 12. The heat dissipation pipes 11 cause the temperature of the outer wall of the waterproof housing 2 to rise, which helps to evaporate external water droplets and further enhances the waterproof performance. Multiple heat dissipation pipes 11 are mounted on the same inner wall of the waterproof housing 2. An exhaust port 13 is mounted on the end of the two connecting pipes 12 away from the heat sink 7.
[0028] In operation, the motor body 3 drives the output shaft 4 to rotate, which in turn drives the bevel gear 5 to rotate. The bevel gear 5 then drives the bevel gear 6, which in turn drives the drive shaft 9 to rotate. The drive shaft 9, in turn, drives the cooling fan blades 10 located inside the heat sink 7 to rotate. One end of the heat sink 7 is designed to be tapered and connected to the connecting pipe 12, forming an airflow channel. The rotation of the cooling fan blades 10 generates airflow, drawing the heat generated by the motor body 3 inside the waterproof housing 2 into the heat sink 7 and blowing it into multiple cooling pipes 11 through the connecting pipe 12. The cooling pipes 11 are arranged in a specific pattern. Installed on the inner wall of the waterproof housing 2, it effectively increases the heat dissipation area and accelerates heat transfer. Finally, the heat is discharged through the heat dissipation pipe 11 and released to the outside through the air outlet 13. The waterproof housing 2 shares the heat through the heat dissipation pipe 11. When the motor body 3 is running, the heat of the waterproof housing 2 evaporates some of the water droplets splashed outside, reducing the water droplets remaining on the outer wall of the waterproof housing 2. When the output shaft 4 on the motor body 3 is running, the faster the output shaft 4 rotates, the faster the cooling fan on the connecting shaft 18 rotates, so that the heat generated by the operation of the motor body 3 is discharged more quickly, thereby reducing the rapid rise in the internal temperature of the motor body 3 and thus preventing overheating problems.
[0029] The transmission method of bevel gear 6 and drive shaft 9 makes the rotation speed of cooling fan blade 10 proportional to the rotation speed of motor body 3, thereby realizing the synchronous adjustment of heat dissipation effect and motor body 3 operation status.
[0030] Example 2
[0031] like Figures 1-6As shown, the heat dissipation assembly includes a fixing frame 20, which is fixed to the inner wall of the connecting back cover 16. A connecting shaft 18 is rotatably connected to the fixing frame 20. One end of the connecting shaft 18 is connected to one end of the output shaft 4 on the motor body 3. A heat dissipation fan blade 14 is installed on the end of the connecting shaft 18 away from the output shaft 4. Multiple heat-conducting plates 15 are installed in a ring on the upper part of the connecting back cover 16. The ends of the heat-conducting plates 15 away from the connecting back cover 16 are installed in a ring on the outer side of the motor body 3. Multiple heat dissipation holes 17 are opened on the connecting back cover 16.
[0032] During operation, the heat dissipation holes 17 of the connecting back cover 16 allow ventilation. If external water droplets enter the waterproof housing 2 through the heat dissipation holes 17 while the motor body 3 is running, the output shaft 4 on the motor body 3 drives the connected connecting shaft 18 to rotate. The connecting shaft 18 drives the connected cooling fan blade 14 to rotate through the fixing bracket 20, so that the rotation of the cooling fan blade 14 blows out the water droplets that have entered the waterproof housing 2 through the heat dissipation holes 17. The heat conduction plate 15 conducts the heat generated by the motor, and the rotation of the cooling fan blade 14 can cool the heat conduction plate 15.
[0033] The second cooling fan blade 14 is directly driven by the output shaft 4 of the motor body 3, eliminating the need for an additional power source and reducing energy consumption. At the same time, the rotation of the second cooling fan blade 14 can not only blow out the water droplets that enter through the heat dissipation hole 17, but also accelerate the airflow inside the waterproof housing 2, improving heat dissipation efficiency. The setting of the heat conduction plate 15 further enhances the heat dissipation effect. By conducting the heat generated by the motor to the heat conduction plate 15 with a larger heat dissipation area, and then cooling it with the airflow blown out by the second cooling fan blade 14, the heat is quickly dissipated.
[0034] Example 3
[0035] like Figures 1-2 As shown, four fixing blocks 19 are installed in a ring on the connecting back cover 16 and the waterproof shell 2. The fixing blocks 19 connecting the back cover 16 and the waterproof shell 2 are connected by fixing bolts 21. Four mounting holes 22 are provided on the mounting base 1.
[0036] During operation, the motor can be fixed by installing it in the mounting holes 22 on the mounting base 1 with external bolts. By removing the fixing bolts 21 on the fixing block 19, the connecting back cover 16 can be separated from the waterproof housing 2, making it convenient for users to check the operation of the motor body 3 during use.
[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A motor with a water-blocking structure, characterized in that: The device includes a mounting base (1), on which a waterproof housing (2) is mounted. A motor body (3) is mounted inside the waterproof housing (2). An output shaft (4) is mounted on the motor body (3). The output shaft (4) is rotatably connected to one end of the waterproof housing (2). A cooling component is mounted on one end of the output shaft (4) inside the waterproof housing (2). A connecting back cover (16) is mounted on the end of the waterproof housing (2) away from the output shaft (4). A heat dissipation component is mounted inside the connecting back cover (16).
2. The motor having a water blocking structure according to claim 1, characterized by: The cooling assembly includes a bevel gear one (5), which is mounted on one end of the output shaft (4) located inside the waterproof housing (2). The bevel gear one (5) is symmetrically meshed with two bevel gears two (6). A drive shaft (9) is mounted on the bevel gears two (6). A mounting bracket (8) is mounted on the drive shaft (9). A heat sink (7) is mounted on the mounting bracket (8).
3. The motor having a water blocking structure according to claim 2, characterized by: The drive shaft (9) is equipped with a cooling fan blade (10) at the end away from the bevel gear (5). The two cooling cylinders (7) are installed at one end on the inner wall of the same waterproof shell (2). The cooling cylinder (7) is connected to multiple cooling pipes (11) through two connecting pipes (12). The multiple cooling pipes (11) are installed on the inner wall of the same waterproof shell (2). The two connecting pipes (12) are equipped with an air outlet (13) at the end away from the cooling cylinder (7).
4. The motor having a water blocking structure according to claim 1, characterized by: The heat dissipation assembly includes a fixing frame (20), which is fixed to the inner wall of the connecting back cover (16). A connecting shaft (18) is rotatably connected to the fixing frame (20). One end of the connecting shaft (18) is connected to one end of the output shaft (4) on the motor body (3). A second heat dissipation fan blade (14) is installed on the end of the connecting shaft (18) away from the output shaft (4).
5. The motor having a water blocking structure according to claim 1, characterized by: Multiple heat-conducting plates (15) are installed in a ring on the upper part of the connecting back cover (16). The end of the heat-conducting plate (15) away from the connecting back cover (16) is installed in a ring on the outside of the motor body (3). Multiple heat dissipation holes (17) are opened on the connecting back cover (16).
6. The motor having a water blocking structure according to claim 1, characterized by: Four fixing blocks (19) are installed in a ring on the connecting back cover (16) and the waterproof shell (2). The fixing blocks (19) of the connecting back cover (16) and the waterproof shell (2) are connected by fixing bolts (21). Four mounting holes (22) are provided on the mounting base (1).