Ceiling fan motor with radial labyrinth water-proof structure

Abstract

This invention relates to the field of ceiling fan motor technology, specifically a ceiling fan motor with a radial labyrinth waterproof structure. It includes a central shaft, a stator assembly on the sidewall of the central shaft, a rotor assembly on the sidewall of the stator assembly, and a waterproof mechanism on the sidewall of the central shaft to prevent water from entering the ceiling fan motor. This waterproof mechanism is divided into a dynamic waterproof mechanism and a static waterproof mechanism. The dynamic waterproof mechanism includes an upper baffle and an upper housing. By incorporating a dynamic waterproof mechanism, this invention prevents water from entering the motor when rinsing the ceiling fan, thus improving the motor's waterproof performance. This creates a labyrinth structure in the radial direction of the motor shaft to prevent external rainwater from entering. When cleaning the ceiling fan, it can be directly cleaned by rinsing with water, making cleaning faster and more convenient.

Description

Technical Field

[0001] This invention relates to the field of ceiling fan motor technology, specifically to a ceiling fan motor with a radial labyrinth waterproof structure. Background Technology

[0002] Ceiling fans are typically fixed to the ceiling, hence the name. They are very effective at cooling the air. The motor is the core component of a ceiling fan, used to drive the fan blades. It is usually composed of an upper casing, a lower casing, a stator assembly, and a rotor assembly.

[0003] Traditional ceiling fan motors cannot be exposed to rain in unprotected outdoor areas or be directly rinsed with water during cleaning. Therefore, when cleaning a ceiling fan with a motor, it must be disassembled and wiped with a cloth, which is extremely inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a ceiling fan motor with a radial labyrinth waterproof structure, including a central shaft, a stator assembly disposed on the sidewall of the central shaft, a rotor assembly disposed on the sidewall of the stator assembly, and a waterproof mechanism for preventing water from entering the interior of the ceiling fan motor disposed on the sidewall of the central shaft. The waterproof mechanism is divided into a dynamic waterproof mechanism and a static waterproof mechanism. The dynamic waterproof mechanism includes an upper baffle and an upper housing, the upper housing being disposed on the sidewall of the central shaft, the upper baffle being interference-fitted onto the sidewall of the central shaft, and the upper baffle being located at the top of the upper housing. The top of the upper housing is provided with an upwardly extending first stepped wall. The upper baffle sidewall is a downwardly extending cylindrical wall, which extends below the top of the first stepped wall and is located on the sidewall of the first stepped wall. The top of the first stepped wall is provided with a sloping surface. A baffle wall is provided inside the upper baffle and is located on the top of the upper housing. The gap between the baffle wall, the inner wall of the upper baffle, and the first stepped wall forms a first buffer zone. A second stepped wall is fixedly connected to the top of the first stepped wall. A first stepped groove is provided inside the baffle wall. The gap between the second stepped wall and the first stepped groove forms a second buffer zone. A water accumulation groove is provided on the sidewall of the second stepped wall.

[0005] Optionally, a third step wall is fixedly connected to the top of the second step wall, a second step groove is provided inside the baffle wall, the gap between the second step groove and the third step wall forms a third buffer zone, and a water accumulation groove is provided on the side wall of the third step wall.

[0006] Optionally, the dynamic waterproof mechanism further includes a lower housing and a lower baffle. The lower housing is disposed on the side wall of the central shaft, and the lower baffle is interference-fitted to the side wall of the central shaft. The lower baffle is located at the bottom of the lower housing. The lower housing has several circular grooves inside, which are distributed in a stepped manner, and the diameter of the grooves gradually decreases from the outside to the inside. The top of the lower baffle is provided with a stepped platform, which matches the several circular grooves. The gap between the stepped platform and the several circular grooves forms a lower buffer zone.

[0007] Optionally, a lower outer cover is provided on the side wall of the central shaft, the lower outer cover is fixedly connected to the bottom of the lower housing, and the lower outer cover is located at the bottom of the lower baffle.

[0008] Optionally, the static waterproofing mechanism includes sealant and a sealing ring. The sealant is injected into the interior of the central shaft. Matching housing fixing holes are provided inside the upper housing and the lower housing. The upper housing and the lower housing are fixedly installed by bolts and the housing fixing holes. The sealing ring is fixedly installed between the upper housing and the lower housing, and the sealing ring is located on one side of the housing fixing hole.

[0009] Optionally, a fan blade mounting hole is provided at one end of the lower housing, the fan blade mounting hole is located at the bottom of the lower housing, and the fan blade mounting hole is a blind hole.

[0010] Optionally, the upper housing sidewall is provided with a protrusion, and the lower housing sidewall is provided with a recess that matches the protrusion.

[0011] Optionally, both the upper housing and the lower housing are fixedly mounted on the side wall of the central shaft via bearings, and both the stator assembly and the rotor assembly are located between the upper housing and the lower housing.

[0012] Optionally, a bottom lamp plate is fixedly connected to the side wall of the central shaft, and the bottom lamp plate is located at the bottom of the lower outer cover.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up a dynamic waterproof mechanism, this invention can prevent water from entering the motor when rinsing the ceiling fan, thus improving the motor's waterproof performance. This creates a labyrinth structure in the radius direction of the motor shaft to prevent external rainwater from entering. When the ceiling fan needs to be cleaned, it can be cleaned directly by rinsing with water, making the cleaning of the ceiling fan faster and more convenient.

[0015] 2. This invention prevents water from entering the motor by injecting sealant into the center shaft. The fit between the protrusions and recesses of the upper and lower housings and the addition of sealing rings enhance the motor's waterproof performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the upper housing structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the lower housing structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the lower baffle structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the upper baffle structure of the present invention.

[0022] Explanation of icon numbers:

[0023] 1. Upper housing; 2. Lower housing; 3. Central shaft; 4. Stator assembly; 5. Rotor assembly; 6. Upper baffle; 7. Lower baffle; 8. Bottom light panel; 9. Sealant; 10. Sealing ring; 11. Fan blade mounting hole; 12. Housing fixing hole; 13. First stepped wall; 14. Second stepped wall; 15. Third stepped wall; 16. First stepped groove; 17. Second stepped groove; 18. First buffer zone; 19. Second buffer zone; 20. Third buffer zone; 21. Baffle wall; 22. Circular groove; 23. Stepped platform; 24. Lower outer cover.

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-6This invention provides a ceiling fan motor with a radial labyrinth waterproof structure, including a central shaft 3, a stator assembly 4 disposed on the side wall of the central shaft 3, and a rotor assembly 5 disposed on the side wall of the stator assembly 4. An upper housing 1 and a lower housing 2 are both mounted on the side wall of the central shaft 3 via bearings. The stator assembly 4 and the rotor assembly 5 are both located between the upper housing 1 and the lower housing 2. A bottom light panel 8 is fixedly connected to the side wall of the central shaft 3, located at the bottom of the lower outer cover 24. A fan blade mounting hole 11 is provided at one end of the lower housing 2, located at the bottom of the lower housing 2, and the fan blade mounting hole 11 is a blind hole structure to prevent rainwater from entering the motor. A waterproof mechanism for preventing water from entering the ceiling fan motor is provided on the side wall of the central shaft 3. The waterproof mechanism is divided into a dynamic waterproof mechanism and a static waterproof mechanism. The dynamic waterproof mechanism includes an upper baffle 6 and an upper housing 1. The upper housing 1 is disposed on the side wall of the central shaft 3, and the upper baffle 6 is interference-fitted to the side wall of the central shaft 3, with the upper baffle 6 located on top of the upper housing 1. The upper baffle 6 is coated with waterproof glue. When the motor is running, the upper baffle 6 is relatively stationary with respect to the central shaft 3 and maintains a certain gap with the upper housing 1. The upper housing 1 has an upward-extending first stepped wall 13 at the top. The side wall of the upper baffle 6 is a downward-extending cylindrical wall that extends below the top of the first stepped wall 13 and is located on the side wall of the first stepped wall 13. The top of the first stepped wall 13 has a sloping part. The upper baffle 6 has a baffle wall 21 inside, which is located at the top of the upper housing 1. The gap between the baffle wall 21, the inner wall of the upper baffle 6 and the first stepped wall 13 forms a first buffer zone 18. The top of the first stepped wall 13 is fixedly connected to a second stepped wall 14. The baffle wall 21 has a first stepped groove 16 inside. The gap between the second stepped wall 14 and the first stepped groove 16 forms a second buffer zone 19. The side wall of the second stepped wall 14 has a water accumulation groove, thus forming a labyrinth structure in the radial direction of the motor shaft to prevent external rainwater from entering. By setting up the aforementioned waterproof mechanism, water can be prevented from entering the motor when rinsing the ceiling fan, thus improving the motor's waterproof performance.

[0027] See Figure 2 , Figure 3 , Figure 6A third step wall 15 is fixedly connected to the top of the second step wall 14. A second step groove 17 is opened inside the baffle 21. The gap between the second step groove 17 and the third step wall 15 forms a third buffer zone 20. A water accumulation groove is opened on the side wall of the third step wall 15. When the motor is subjected to strong water spray, it can only spray in from one direction, and the spray is blocked by the end cover. Only some water can enter the baffle through splashing. When some water enters the first buffer zone 18 inside the upper baffle 6, the first buffer zone 18 will greatly reduce the impact force of the water flow, and the water will flow out of the upper baffle 6 from all directions. Only a small amount of water can continue to advance into the upper baffle 6. At this time, the impact force of the water has been greatly reduced. The water flow is weakened, and as it continues to move forward, the inclined surface of the upper housing 1 and the second buffer zone 19 further reduce the water volume and its impact force. When the water reaches the third buffer zone 20, the water flow is basically unable to continue forward and stops at this point. If the water flow continues to move forward, there is a fourth buffer zone formed by the fourth step arm and the third step groove, which completely stops the water flow. At the same time, each step wall is equipped with a water accumulation tank to ensure that the water flow cannot enter the motor. There is a fitting gap between the upper baffle and the upper housing. Lubricating grease is added to the fitting gap. The lubricating grease can reduce friction, reduce heat generation, reduce noise, and the grease can also further prevent water and dust, oxidation and rust.

[0028] See Figure 2 , Figure 4 , Figure 5 The dynamic waterproof mechanism also includes a lower housing 2 and a lower baffle 7. The lower housing 2 is located on the side wall of the central shaft 3, and the lower baffle 7 is interference-fitted onto the side wall of the central shaft 3. The lower baffle 7 is located at the bottom of the lower housing 2. The lower housing 2 has several circular grooves 22 inside, which are distributed in a stepped manner, and the diameter of the circular grooves 22 gradually decreases from the outside to the inside. The top of the lower baffle 7 is provided with a stepped platform 23, which matches the circular grooves 22. The gap between the stepped platform 23 and the circular grooves 22 forms a lower buffer zone. The side wall of the central shaft 3 is provided with a lower outer cover 24. The cover 24 is fixedly connected to the bottom of the lower housing 2, and the lower outer cover 24 is located at the bottom of the lower baffle 7. When the motor is directly impacted by the water flow from below, the bottom light plate 8 can block some of the rainwater. The unblocked water flow may enter the interior of the lower outer cover 24. After the water enters the interior of the lower outer cover 24, it will encounter a large buffer zone. Under the action of gravity, the water will flow down and out of the lower outer cover 24. Only a small amount of water can enter the interior of the lower baffle 7. Due to the obstruction of the lower buffer zone formed between the stepped platform 23 and the circular groove 22, the water flow generally cannot continue to advance when it enters the second stepped platform 23.

[0029] See Figure 1 , Figure 2The static waterproof mechanism includes sealant 9 and a sealing ring 10. The sealant 9 is injected into the interior of the central shaft 3 to prevent rainwater from entering the motor through gaps in the motor wiring. Matching housing mounting holes 12 are provided inside both the upper housing 1 and the lower housing 2. The upper housing 1 and the lower housing 2 are fixedly installed using bolts and the mounting holes 12. The sealing ring 10 is fixedly installed between the upper housing 1 and the lower housing 2, located on one side of the mounting hole 12, to prevent rainwater from entering the motor through the joint between the upper and lower housings. The side wall of the upper housing 1 has a protrusion, and the side wall of the lower housing 2 has a recess that matches the protrusion. Injecting sealant 9 into the interior of the central shaft 3 prevents water from entering the motor through the central shaft 3. The fit between the protrusions and recesses in the upper and lower housings, along with the addition of the sealing ring 10, enhances the motor's waterproof performance.

[0030] The waterproof mechanism of this invention is as follows: When cleaning the ceiling fan, the fan is directly rinsed with water. When the motor is subjected to strong water spray, the water can only enter from one direction, and the spray is blocked by the end cover. Only some water can enter the baffle through splashing. When some water enters the first buffer zone 18 inside the upper baffle 6, the first buffer zone 18 will greatly reduce the impact force of the water flow, and the water will flow out of the upper baffle 6 from all directions. Only a small amount of water can continue to advance into the upper baffle 6. At this time, the impact force of the water has been greatly weakened. When the water flow continues to advance, it will be further reduced by the inclined surface of the upper casing 1 and the second buffer zone 19. When the water reaches the third buffer zone 20, the water flow is basically unable to continue to advance, and the water flow basically stops here. If the water flow continues to advance, there is still a fourth buffer zone. The fourth buffer zone formed by the stepped arm and the third stepped groove completely stops the water flow. Each stepped wall is equipped with a water collection tank to ensure that water cannot enter the motor. When the motor is directly impacted by the water flow from below, the water may enter the lower outer cover 24. After entering the lower outer cover 24, the water will encounter a large buffer zone. Under the action of gravity, the water will flow down and out of the lower outer cover 24. Only a small amount of water can enter the lower baffle 7. Due to the obstruction of the lower buffer zone formed between the stepped platform 23 and the circular groove 22, the water flow generally cannot continue to advance when it enters the second stepped platform 23. The filling of sealant 9 inside the central shaft 3 can prevent water from entering the motor from the inside of the central shaft 3. The fit between the protrusions and concave parts of the upper and lower housings and the addition of sealing rings 10 can enhance the waterproof effect of the motor.

[0031] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A ceiling fan motor with a radial labyrinth waterproof structure, comprising a central shaft (3), a stator assembly (4) disposed on the side wall of the central shaft (3), and a rotor assembly (5) disposed on the side wall of the stator assembly (4), characterized in that: The central shaft (3) is provided with a waterproof mechanism on its side wall to prevent water from entering the ceiling fan motor. The waterproof mechanism is divided into a dynamic waterproof mechanism and a static waterproof mechanism. The waterproof mechanism enables the ceiling fan motor to be adapted to direct water flow washing scenarios. The dynamic waterproof mechanism includes an upper baffle (6) and an upper housing (1). The upper housing (1) is provided on the side wall of the central shaft (3). The upper baffle (6) is interference-fitted to the side wall of the central shaft (3) to ensure a tight fit. The upper baffle (6) is located at the top of the upper housing (1). The top of the upper housing (1) is provided with an upwardly extending first stepped wall (13). The side wall of the upper baffle (6) is a downwardly extending cylindrical wall. The cylindrical wall extends below the top of the first stepped wall (13) and is located at the first stepped wall (13). The first stepped wall (13) has a sloping surface at the top for guiding water flow down the side. The upper baffle (6) has a baffle wall (21) inside. The baffle wall (21) is located at the top of the upper housing (1). The gap between the baffle wall (21), the inner wall of the upper baffle (6) and the first stepped wall (13) forms a first buffer zone (18) for initially weakening the impact force of the water flow. The top of the first stepped wall (13) is fixedly connected to a second stepped wall (14). The baffle wall (21) has a first stepped groove (16) inside. The gap between the second stepped wall (14) and the first stepped groove (16) forms a second buffer zone (19) for further weakening the impact force of the water flow. The side wall of the second stepped wall (14) has a water collection trough for collecting the infiltrated water flow.

2. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 1, characterized in that: The top of the second stepped wall (14) is fixedly connected to the third stepped wall (15). The baffle (21) has a second stepped groove (17) inside. The gap between the second stepped groove (17) and the third stepped wall (15) forms a third buffer zone (20). The side wall of the third stepped wall (15) has a water accumulation groove.

3. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 1, characterized in that: The dynamic waterproof mechanism also includes a lower housing (2) and a lower baffle (7). The lower housing (2) is disposed on the side wall of the central shaft (3). The lower baffle (7) is interference-fitted to the side wall of the central shaft (3) and is located at the bottom of the lower housing (2). The lower housing (2) has several circular grooves (22) inside. The several circular grooves (22) are distributed in a stepped manner, and the diameter of the several circular grooves (22) gradually decreases from the outside to the inside. The lower baffle (7) is provided with a stepped platform (23) at the top. The stepped platform (23) matches the several circular grooves (22). The gap between the stepped platform (23) and the several circular grooves (22) forms a lower buffer zone.

4. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 3, characterized in that: The central shaft (3) is provided with a lower outer cover (24) on its side wall. The lower outer cover (24) is fixedly connected to the bottom of the lower housing (2) and is located at the bottom of the lower baffle (7).

5. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 3, characterized in that: The static waterproof mechanism includes sealant (9) and sealing ring (10). The sealant (9) is injected into the interior of the central shaft (3). The upper housing (1) and the lower housing (2) are both provided with matching housing fixing holes (12). The upper housing (1) and the lower housing (2) are fixedly installed by bolts and the housing fixing holes (12). The sealing ring (10) is fixedly installed between the upper housing (1) and the lower housing (2). The sealing ring (10) is located on one side of the housing fixing hole (12).

6. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 3, characterized in that: The lower housing (2) has a fan blade mounting hole (11) at one end. The fan blade mounting hole (11) is located at the bottom of the lower housing (2), and there are several fan blade mounting holes (11).

7. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 3, characterized in that: The upper housing (1) has a protrusion on its side wall, and the lower housing (2) has a recess on its side wall that matches the protrusion.

8. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 3, characterized in that: The upper housing (1) and the lower housing (2) are both fixedly mounted on the side wall of the central shaft (3) by bearings, and the stator assembly (4) and the rotor assembly (5) are both located between the upper housing (1) and the lower housing (2).

9. The ceiling fan motor with a radial labyrinth waterproof structure according to claim 4, characterized in that: The bottom lamp plate (8) is fixedly connected to the side wall of the central shaft (3), and the bottom lamp plate (8) is located at the bottom of the lower outer cover (24).

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