Waterproof motor
By designing structures such as overflow ring, water connection ring and water discharge channel in small household appliance motors, the water is thrown out by centrifugal force and discharged through the water discharge channel, combined with the flow blocking ring table and sealing ring, the problem of water vapor entering caused by negative pressure during use of the motor is solved, and the waterproof performance is significantly improved.
Patent Information
- Application Number
- CN202510086235.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When used, the existing small household appliance motors are connected to the blades, which makes the motor prone to heat up, which leads to negative pressure, causing water vapor to enter the inside of the motor housing, resulting in insufficient waterproofing performance.
A waterproof motor is designed, using structures such as overflow ring, water connection ring and water discharge channel. Water is thrown out through the centrifugal force of the overflow ring, and water connection ring is collected and discharged through the water discharge channel. Combined with the flow blocking ring table and sealing ring, further reducing the entry of water vapor.
It effectively reduces the insufficient sealing performance at the motor output shaft position, prevents water vapor from entering the motor housing, and significantly improves the waterproof performance of the motor.
Smart Images
Figure CN119995223A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor technology, and in particular to a waterproof motor. Background Art
[0002] A motor is a device that converts electrical energy into kinetic energy. It is widely used in various scenarios that require power. Among them, small household appliances are indispensable, such as juicers, wall breakers and other small household appliances.
[0003] In actual use, the motor of a small household appliance is placed at the bottom of a container with the output shaft facing upwards to provide power. However, in this arrangement, since the output shaft is connected to components such as blades, it needs to directly contact the liquid with a relatively high water content in the container, such as juice. Inevitably, some water will flow downward along the output shaft of the motor. In order to prevent water from flowing into the motor housing and causing damage to the motor, a sealing ring is often used in the prior art to achieve the purpose of waterproofing.
[0004] However, in actual use, since the output shaft of the motor is connected to the blade, the resistance encountered by the output shaft when the motor is in use is fluctuating, causing the motor to heat up very easily. After the heat is cooled, the inside of the motor housing will heat up and expand first, and negative pressure will be generated during the cooling process, causing water outside the housing to easily enter the inside of the motor housing due to the negative pressure. Especially at this time, the output shaft position at the top of the motor is very likely to cause the outside air carrying water vapor to enter the inside of the motor housing due to negative pressure. Therefore, how to effectively reduce the sealing performance of the motor output shaft position is a waterproof problem that the motor urgently needs to solve. Summary of the invention
[0005] In order to reduce the possibility of the motor output shaft penetrating into the housing and optimize the waterproof performance, the present application provides a waterproof motor.
[0006] The present application provides a waterproof motor, which adopts the following technical solution:
[0007] A waterproof motor comprises a shell and an output shaft rotatably arranged on the shell, the output shaft is integrally formed with an overflow ring, the output shaft outer sleeve is provided with a water receiving ring located at the lower side of the overflow ring, the overflow ring is gap-fitted with a water receiving ring groove formed on the water receiving ring, the water receiving ring is arranged on the shell, and the bottom of the water receiving ring groove is connected to a drainage channel extending to the outside of the shell; a drainage structure for throwing water in water vapor out by centrifugal force is arranged at a position of the output shaft located at the lower side of the water receiving ring.
[0008] By adopting the above technical solution, when in use, if the water in the container flows along the output shaft toward the shell, at this time, the water will first pass through the overflow ring, and when in use, the output shaft will rotate, so that the overflow ring rotates with the output shaft, so that the water can be thrown out by centrifugal force. After being thrown out, the water will flow into the water receiving ring groove on the water receiving ring. The water received by the water receiving ring groove can be discharged toward the surrounding side of the shell through the drainage channel or can be directly discharged through other pipes to achieve the purpose of waterproofing.
[0009] Optionally, a plurality of connecting rods fixed to the shell are arranged on the outside of the water receiving ring, and the water drainage channel is formed on the connecting rods.
[0010] By adopting the above technical solution, the water receiving ring is connected to the shell through a connecting rod, and the drainage channel is formed on the connecting rod, so that the connecting rod can also be used for drainage. Of course, the drainage channel can be set as a groove structure or a hole structure according to needs and drainage volume.
[0011] Optionally, the outer edge top surface of the overflow ring is formed with a slope and the outer ring is the low end.
[0012] By adopting the above technical solution, the water on the top surface of the overflow ring is tilted downward toward the water receiving ring groove when being thrown out, thereby reducing the possibility that the water is directly thrown out to other positions and penetrates into the shell.
[0013] Optionally, a baffle ring which is externally mounted on the output shaft is integrally formed on the top outer wall of the shell.
[0014] By adopting the above technical solution, the baffle ring can reduce the possibility that water present on the top of the housing during use or cleaning directly flows toward the output shaft and penetrates into the housing.
[0015] Optionally, the baffle ring and / or the housing is provided with a sealing ring which is sleeved on the output shaft.
[0016] By adopting the above technical solution, the sealing ring can directly perform sealing processing between the peripheral side of the output shaft and the inner wall of the baffle ring or the corresponding position of the housing.
[0017] Optionally, the drainage structure includes:
[0018] A first annular groove is formed on the outer wall of the output shaft.
[0019] and a second annular groove formed on the inner wall of the baffle ring platform, wherein the second annular groove is located below the first annular groove. The baffle ring platform is provided with a drainage channel extending from the outside to the inside in an inclined direction and connected to at least the bottom of the second annular groove.
[0020] By adopting the above technical solution, although most of the water is directly discharged after being thrown out through the overflow ring, the water vapor content is relatively high. For example, when juicing or stirring, part of the water will condense and contact the output shaft. At this time, the centrifugal force generated by the first ring groove along the radial direction of the output shaft can cause the water vapor to be thrown out, and the second ring groove initially receives the thrown condensed water, which is then discharged through the drainage channel to achieve the purpose of further waterproofing.
[0021] Optionally, at least two first annular grooves are provided, and at least two second annular grooves are also provided, and the top of the drainage channel is connected to the bottom wall of the lowermost second annular groove.
[0022] By adopting the above technical solution, a plurality of first annular grooves are provided, so that an annular platform structure can be formed between adjacent first annular grooves, thereby significantly increasing the possibility of condensed water being thrown out; at the same time, the second annular groove is located at the lower side of the first annular groove, which will directly catch the thrown water under the action of gravity and centrifugal force so as to facilitate discharge through the drainage channel.
[0023] Optionally, an overflow ring is fixedly connected to the outer edge of the top of the baffle ring platform and is clamped and rotatably arranged relative to the water receiving ring.
[0024] By adopting the above technical solution, the overflow ring can increase the path for the condensed water at the bottom of the water receiving ring to flow toward the output shaft, thereby further optimizing the waterproof effect.
[0025] Optionally, a refrigeration component is provided at a position of the baffle ring platform located on the upper side of the second ring groove.
[0026] By adopting the above technical solution, the refrigeration component will make the temperature of the baffle ring lower than the air temperature on the surrounding side, so that the moisture contained in the hot air due to the heating of the shell after use can be repeatedly condensed at the position of the refrigeration component corresponding to the baffle ring, so that the first ring groove cooperates with the second ring groove to discharge the condensed water, reducing the moisture content of the air entering the shell, thereby achieving the purpose of waterproofing.
[0027] Optionally, the inner circle of the bottom wall of the water receiving ring groove is higher than the outer circle.
[0028] By adopting the above technical solution, after the water is received by the water receiving ring groove, the water can flow toward the peripheral side and be discharged, thereby reducing the possibility of flowing toward the inner output shaft.
[0029] In summary, the present application includes at least one of the following beneficial technical effects:
[0030] When in use, water flowing directly downward from the container along the output shaft from the top will first pass through the overflow ring. When in use, the overflow ring will rotate with the output shaft and throw the water out by centrifugal force. After being thrown out, the water will flow into the water receiving ring groove on the water receiving ring. The water received by the water receiving ring groove will be discharged toward the surrounding side of the shell through the drainage channel or can be directly discharged through other pipes. At the same time, after use, due to the negative pressure inside and outside the shell, the air entering the first ring groove and the second ring groove will cooperate with the refrigeration parts, and the water vapor will condense and be discharged through the drainage channel, so that even if the air enters the shell, the water vapor content in the shell can be significantly reduced, thereby reducing the water content inside the shell, thereby achieving the purpose of waterproofing. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic cross-sectional view of the waterproof motor in this application.
[0032] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.
[0033] Explanation of the reference numerals: 1. Shell; 11. Water receiving ring; 111. Water receiving ring groove; 112. Matching ring groove; 12. Drainage channel; 121. Connecting rod; 13. Blocking ring platform; 131. Sealing ring; 132. Second ring groove; 133. Drainage channel; 134. Overflow ring; 135. Refrigeration component; 2. Output shaft; 21. Overflow ring; 22. First ring groove. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-2 This application is described in further detail.
[0035] The present application embodiment discloses a waterproof motor. Figure 1 and Figure 2 The waterproof motor includes a housing 1 and an output shaft 2 rotatably disposed on the housing 1, the output shaft 2 is connected to the rotor of the motor for power output, and other structures are prior arts and will not be described here.
[0036] At the same time, in order to prevent the water flowing downward along the output shaft 2 from entering the housing 1, the output shaft 2 is integrally formed with an overflow ring 21. The overflow ring 21 is used to prevent the water from seeping directly from entering the connection portion with the housing 1 along the output shaft 2. On the other hand, when in use, the overflow ring 21 will rotate with the output shaft 2, so that the water will be dispersed under the action of centrifugal force. The overflow ring 21 can be coaxially arranged relative to the output shaft 2, and the central axis of the overflow ring 21 can also be arranged at an angle with the central axis of the output shaft 2, preferably coaxially arranged in this embodiment to reduce vibration during use.
[0037] Reference Figure 1 and Figure 2, a water receiving ring 11 is arranged at the lower side of the overflow ring 21, and the water receiving ring 11 is arranged on the housing 1. The water receiving ring 11 is outer-mounted on the output shaft 2, and a water receiving ring groove 111 is formed on the top surface of the water receiving ring 11. The overflow ring 21 is at least partially located in the water receiving ring groove 111 and the two are clearance-matched. In this embodiment, the outer edge of the overflow ring 21 is located inside the water receiving ring groove 111, so that the water receiving ring groove 111 can receive all the water thrown out by the overflow ring 21. Among them, the inner circle of the bottom wall of the water receiving ring groove 111 is higher than the outer circle, so as to reduce the possibility of the received water overflowing to the output shaft 2.
[0038] At the same time, the water receiving ring 11 is fixedly connected to a plurality of connecting rods 121, which are fixedly connected to the shell 1, and the connecting rods 121 are formed with a drainage channel 12, one end of the drainage channel 12 is connected to the bottom of the water receiving ring groove 111, and the other end of the drainage channel 12 extends downward along the connecting rods 121 to the outside of the shell 1, so that the water received by the water receiving ring groove 111 can be discharged toward the outside of the shell through the drainage channel 12 to reduce the possibility of infiltration into the shell 1.
[0039] Reference Figure 1 and Figure 2 Furthermore, the outer edge top surface of the overflow ring 21 is formed with a slope and the outer edge is a low end, so that the received water can be thrown out relatively accurately into the water receiving ring groove 111 when following the rotation of the output shaft 2.
[0040] In addition, since the water receiving ring 11 is required to discharge water downward to the peripheral side of the housing 1, a gap is provided between the water receiving ring 11 and the housing 1. In order to reduce the water vapor on the housing 1 from directly entering the housing 1 through the gap between the housing 1 and the output shaft 2, the housing 1 is fixedly connected with a flow blocking ring 13.
[0041] Reference Figure 1 and Figure 2 The baffle ring 13 is located at the top of the housing 1 and protrudes from the housing 1 to prevent water from flowing directly toward the output shaft 2. At the same time, a sealing ring 131 is provided on the inner wall of the baffle ring 13 and is sleeved on the output shaft 2 for sealing.
[0042] In addition, a drainage structure is provided at the connection between the baffle ring 13 and the output shaft 2 to throw out the extra condensed water by centrifugal force.
[0043] Reference Figure 1 and Figure 2 The drainage structure includes a first annular groove 22 and a second annular groove 132. The first annular groove 22 is formed on the outer wall of the output shaft 2. The first annular groove 22 is preferably coaxially arranged with the output shaft 2 and the opening is arranged toward the outside. One or more first annular grooves 22 can be arranged. In this embodiment, two are taken as an example for explanation, and the two first annular grooves 22 are distributed along the axial direction of the output shaft 2.
[0044] The second annular grooves 132 are arranged one by one corresponding to the first annular grooves 22, and the second annular grooves 132 are located below the first annular grooves 22. The second annular grooves 132 are formed on the inner wall of the flow-blocking ring platform 13. The two second annular grooves 132 are distributed along the axis of the output shaft 2, so that the water infiltrating along the output shaft 2 will flow along the first annular grooves 22, and will be thrown to the second annular grooves 132 under the action of centrifugal force. At the same time, the flow-blocking ring platform 13 is formed with a drainage channel 133 that runs through the inner wall from the bottom, and the top of the drainage channel 133 is connected to at least the bottom position of the second annular groove 132. In this embodiment, the top of the drainage channel 133 is connected to and runs through the second annular groove 132, so that the water in the second annular groove 132 can be discharged downward, so as to significantly reduce the possibility of water infiltrating into the housing 1.
[0045] Reference Figure 1 and Figure 2 In addition, in order to further reduce the possibility of water infiltration into the housing 1, an overflow ring 134 is fixedly connected to the top of the baffle ring 13, and a matching ring groove 112 adapted to the overflow ring 134 is opened at the bottom of the water receiving ring 11. The overflow ring 134 is clamped in the matching ring groove 112 and is matched with the inner wall clearance of the matching ring groove 112. When in use, due to the presence of the overflow ring 134, the water flow path is extended, which significantly reduces the possibility of water flowing from the bottom wall of the water receiving ring 11 toward the inside to the output shaft 2.
[0046] Reference Figure 1 and Figure 2 Finally, in order to further reduce the possibility of water entering the housing 1, a refrigeration component 135 for cooling is provided in the baffle ring 13, so that the temperature of the baffle ring 13 is significantly lower than that of the air, so that when the external air contacts the baffle ring 13, the water vapor will condense, and the condensed water vapor will be thrown out through the first ring groove 22 and the second ring groove 132 and discharged through the drainage channel 133. Among them, the refrigeration component 135 is located on the upper side of the second ring groove 132, so that the condensed water can be discharged through the second ring groove 132, and even if it contacts the output shaft 2, it can be discharged by throwing it out.
[0047] Specifically, the refrigeration element 135 can be a refrigeration device, such as a pipe connected with cold air. In this embodiment, the refrigeration element 135 is an annular semiconductor refrigerator, and the refrigeration element 135 is arranged around the output shaft 2 and embedded in the baffle ring 13 to condense air.
[0048] When in use, water flowing downward from the container directly along the output shaft 2 from the top will first pass through the overflow ring 21. When in use, the overflow ring 21 will rotate with the output shaft 2 and throw the water out by centrifugal force. After being thrown out, the water will flow into the water receiving ring groove 111 on the water receiving ring 11. The water received by the water receiving ring groove 111 is discharged toward the side of the shell 1 through the drainage channel 12 or can be directly discharged through other pipes.
[0049] Reference Figure 1 and Figure 2 At the same time, after use, due to the negative pressure inside and outside the shell 1, the air entering the first annular groove 22 and the second annular groove 132 cooperates with the refrigeration component 135, and the water vapor will condense and be discharged through the drainage channel 133, so that even if the air enters the shell 1, the water vapor content in the shell 1 can be significantly reduced, thereby reducing the water content inside the shell 1 and achieving the purpose of waterproofing.
[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A waterproof motor, comprising a housing (1) and an output shaft (2) rotatably disposed on the housing (1), characterized in that: The output shaft (2) is integrally formed with an overflow ring (21); the output shaft (2) is covered with a water receiving ring (11) located at the lower side of the overflow ring (21); the overflow ring (21) is clearance-matched with a water receiving ring groove (111) formed on the water receiving ring (11); the water receiving ring (11) is arranged on the housing (1), and the bottom of the water receiving ring groove (111) is connected to a water drain channel (12) extending to the outside of the housing (1); The output shaft (2) is provided with a drainage structure located at the lower side of the water receiving ring (11) for throwing out water in the water vapor by centrifugal force.
2. A waterproof motor according to claim 1, characterized in that: A plurality of connecting rods (121) fixed to the housing (1) are arranged outside the water receiving ring (11), and the water drain channel (12) is formed on the connecting rods (121).
3. A waterproof motor according to claim 1, characterized in that: The outer edge top surface of the overflow ring (21) is formed with a slope and the outer ring is the lower end.
4. A waterproof motor according to claim 1, characterized in that: The top outer wall of the housing (1) is integrally formed with a flow-blocking ring platform (13) which is sleeved on the output shaft (2).
5. A waterproof motor according to claim 4, characterized in that: The baffle ring (13) and / or the housing (1) are provided with a sealing ring (131) which is externally mounted on the output shaft (2).
6. A waterproof motor according to claim 4, characterized in that: The drainage structure comprises: a first annular groove (22) formed on the outer wall of the output shaft (2); and a second annular groove (132) formed on the inner wall of the flow-blocking ring platform (13), wherein the second annular groove (132) is located below the first annular groove (22), and the flow-blocking ring platform (13) is provided with a drainage channel (133) extending obliquely from the outside to the inside and connected to at least the bottom of the second annular groove (132).
7. A waterproof motor according to claim 6, characterized in that: At least two of the first annular grooves (22) are provided, and at least two of the second annular grooves (132) are also provided, and the top of the drainage channel (133) is connected to the bottom wall of the lowermost second annular groove (132).
8. The waterproof motor according to claim 4, characterized in that: An overflow ring (134) is fixedly connected to the outer edge of the top of the flow blocking ring platform (13) and is arranged to rotate relative to the water receiving ring (11).
9. A waterproof motor according to claim 8, characterized in that: A refrigeration component (135) for refrigeration is arranged at a position on the upper side of the second annular groove (132) of the baffle ring platform (13).
10. The waterproof motor according to claim 1, characterized in that: The inner circle of the bottom wall of the water receiving ring groove (111) is higher than the outer circle.