Motor structure with good sealing effect

Abstract

The utility model provides a motor structure that good sealing effect includes casing, fan housing, fan, fan drive part, fan drive part sets up in casing, and the drive shaft of fan drive part passes through casing and is connected with fan, and the end of casing is sleeved with fan housing, and the fan is located in the air suction cavity that fan housing and casing end enclose, and the end of casing that links to each other with fan housing is provided with waterproof structure, and the middle part of waterproof structure is provided with waterproof structure through -hole that can pass through the drive shaft, and the inner wall on waterproof structure through -hole is provided with oil seal structure, and the middle part of oil seal structure is provided with oil seal structure through -hole that can pass through the drive shaft, the utility model has the advantages of: increase waterproof performance of the position that drive shaft passes through casing, improve the sealing property of casing, oil seal structure can further increase sealing effect and waterproof effect, prolong the service life of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor structure with good sealing effect. Background Technology

[0002] A Chinese utility model patent with application number CN201922262652.3, entitled "A Novel Waterproof Vibration Motor," discloses a novel waterproof vibration motor. The motor body has a mounting base fixed to its end face, and the motor body is fixedly mounted to the inner side of the end face of a waterproof shell via the mounting base. The waterproof shell is a hollow cylindrical structure, with a waterproof plate fixed to its end face. A water-proof structure, also a hollow cylindrical structure, is fixed to the center of the waterproof plate. Waterproof covers are fitted and fixed to the outer edges of both ends of the waterproof shell. The rotor shaft of the vibration motor body extends outwards from the mounting base, waterproof plate, water-proof structure, and waterproof covers. The rotor shaft is connected to the waterproof plate, water-proof structure, and waterproof covers via water-sealed rubber sleeves, maintaining relative rotation. The sidewalls of the waterproof covers are fixedly connected to the outer walls of the waterproof shell via bolts, and an annular sealing sleeve is nested at the contact point between the waterproof cover and the end face of the waterproof shell. This utility model has the beneficial effect of highly efficient waterproofing. However, the waterproof structure of this motor is bulky and inefficient during installation, leaving room for improvement. Therefore, the structure of this motor needs further improvement. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a motor structure that is compact, waterproof, easy to assemble and disassemble, and has a good sealing effect, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: This motor structure with good sealing effect includes a housing, a fan cover, a fan, and a fan drive unit. The fan drive unit is disposed in the housing, and the drive shaft of the fan drive unit passes through the housing and is connected to the fan. The fan cover is sleeved on the end of the housing, and the fan is located in the air suction cavity formed by the fan cover and the end of the housing. The characteristic is that: a waterproof structure is provided at the end of the housing connected to the fan cover, a waterproof structure through hole that can pass through the drive shaft is provided in the middle of the waterproof structure, an oil seal structure is provided on the inner wall of the waterproof structure through hole, and an oil seal structure through hole that can pass through the drive shaft is provided in the middle of the oil seal structure.

[0005] As an improvement, the waterproof structure preferably includes a sealing disc with a mounting groove in the center of the disc body. The fan cover is connected to the disc body, and air outlet holes are distributed on the disc body around the mounting groove. The oil seal structure is connected to the mounting groove. When the sealing disc is connected to the end of the housing, the oil seal structure is sandwiched between the disc body and the end of the housing. Sandwiching the oil seal structure between the disc body and the end of the housing makes disassembly and assembly very convenient and efficient; the oil seal structure improves the sealing performance of the end of the housing, provides good waterproofing, and extends the service life of the motor.

[0006] In a further improvement, the oil seal structure preferably includes a cover and a sealing ring. The cover has an annular oil injection chamber, and the inner wall of the cover has an annular fitting groove. The bottom surface of the fitting groove has an opening that connects to the oil injection chamber. The sealing ring is fitted into the fitting groove. The sealing ring itself improves the sealing performance of the housing end face, and simultaneously guides oil to wet the gap between the drive shaft and the housing end face, increasing the wetting area and further improving the sealing performance.

[0007] Further improvements include the option of using a fully open, through-groove design for the fitting groove. This allows for better oil film formation, resulting in improved waterproofing and sealing.

[0008] In a further improvement, the cover can preferably include an upper cylinder and a lower disc, with the diameter of the disc being larger than the diameter of the cylinder. An annular sealing protrusion is provided on the top surface of the disc, and this sealing protrusion contacts the bottom surface of the disc mounting groove. This further improves the sealing performance.

[0009] A further improvement is made by preferably providing an annular protrusion on the top surface of the sealing protrusion. The sealing protrusion, the annular protrusion, and the cover are elastic structures made of rubber. When the sealing protrusion contacts the top of the disc mounting groove, the annular protrusion is compressed and deformed, pressing against the bottom surface of the disc mounting groove. This further improves the sealing performance.

[0010] As a further improvement, the bottom surface of the disc can preferably be provided with an annular groove that can fit a sealing gasket, thereby further improving the sealing performance.

[0011] As an improvement, an oil seal structure mounting groove can preferably be provided on the end of the housing connecting the oil seal structure. This makes the oil seal structure installation more secure.

[0012] As an improvement, a waterproof cover can preferably be connected to the bottom of the housing, and the end face of the waterproof cover has an opening for wires to pass through. This improves the waterproof effect of the bottom of the housing.

[0013] As an improvement, the housing may preferably be bell-shaped, with the control panel of the fan drive unit covering the opening in the housing. This improves the waterproof performance of the housing.

[0014] Compared with the prior art, the advantages of this utility model are as follows: the end of the housing connected to the wind cover is provided with a waterproof structure, the middle of the waterproof structure is provided with a waterproof structure through hole that can pass through the drive shaft, an oil seal structure is provided on the inner wall of the waterproof structure through hole, and the middle of the oil seal structure is provided with an oil seal structure through hole that can pass through the drive shaft. This structure can increase the waterproof performance at the position where the drive shaft passes through the housing and improve the sealing performance of the housing; the oil seal structure can further increase the sealing effect and waterproof effect, and extend the service life of the motor. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A frontal projection view;

[0017] Figure 3 yes Figure 2 Cross-sectional view along line AA;

[0018] Figure 4 yes Figure 1 Exploded structural diagram;

[0019] Figure 5 yes Figure 4 Further structural decomposition diagram;

[0020] Figure 6 yes Figure 5 Further structural decomposition diagram;

[0021] Figure 7 yes Figure 6 A three-dimensional view of the central sealing disc from another angle;

[0022] Figure 8 yes Figure 6 Further structural decomposition diagram;

[0023] Figure 9 yes Figure 8 A three-dimensional view of the oil seal structure from another angle;

[0024] Figure 10 yes Figure 8 Further structural decomposition diagram;

[0025] Figure 11 yes Figure 9 A sectional view taken along the plane containing the central axis;

[0026] Figure 12 yes Figure 8 Exploded view of the structure of the central sealing disc after being cut open along the plane containing the central axis. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 12 As shown, the motor structure with good sealing effect in this embodiment includes a housing 1, a fan shroud 4, a fan 5, and a fan drive unit 6. The fan drive unit 6 is disposed in the housing 1 and includes a stator 62, a rotor 63, a drive shaft 61, and a control board 60. The conductive plates on the stator 62 are connected to the control board 60 and connected to the power supply through wires. The specific structure of the fan drive unit 6 and the working principle of driving the fan 5 to rotate are known technologies and will not be described in detail. The drive shaft 61 of the fan drive unit 6 passes through the housing 1 and is connected to the fan 5. The fan shroud is fitted onto the end of the housing 1. The fan 5 is located in the air intake cavity formed by the fan shroud 4 and the end of the housing. A waterproof structure is provided at the end of the housing connected to the fan shroud 4. A waterproof structure through hole is provided in the middle of the waterproof structure, which allows the drive shaft 61 to pass through. An oil seal structure is provided on the inner wall of the waterproof structure through hole, and an oil seal structure through hole is provided in the middle of the oil seal structure, which allows the drive shaft 61 to pass through.

[0029] The waterproof structure includes a sealing disc 3, a disc mounting groove 31 is provided in the middle of the disc body of the sealing disc 3, a wind cover 4 is connected to the disc body, air outlet holes 32 are distributed on the disc body around the disc mounting groove 31, and an oil seal structure is connected to the disc mounting groove 31. When the sealing disc 3 is connected to the end of the housing, the oil seal structure is sandwiched between the disc body and the end of the housing.

[0030] The oil seal structure includes a cover body 2 and a sealing ring 20. An annular oil injection cavity 21 is provided in the cover body 2, and an annular fitting groove 22 is provided on the inner wall of the cover body 2. An opening at the bottom of the fitting groove 22, connecting to the oil injection cavity 21, is provided on the bottom surface of the groove. The sealing ring 20 is fitted into the fitting groove 22. The fitting groove 22 is a fully open fitting groove. Oil in the oil injection cavity 21 can flow along the gap between the fitting groove and the sealing ring 20 to wet the surface of the sealing ring 20, thereby forming an oil film on the sealing ring 20, achieving a water-proof effect.

[0031] The cover 2 comprises an upper cylindrical body and a lower disc body, the diameter of which is larger than that of the cylinder. An annular sealing protrusion 23 is provided on the top surface of the disc body, and the sealing protrusion 23 contacts the bottom surface of the disc body mounting groove 31. An annular protrusion 231 is provided on the top surface of the sealing protrusion 23. The sealing protrusion 23, the annular protrusion 231, and the cover 2 are elastic structures made of rubber. When the sealing protrusion 23 contacts the disc body mounting groove 31, the annular protrusion 231 is deformed under pressure and contacts the bottom surface of the disc body mounting groove 31. An annular groove 24 for fitting a sealing gasket is provided on the bottom surface of the disc body.

[0032] An oil seal mounting groove 11 is provided on the end of the housing connecting the oil seal structure. A waterproof cover 7 is connected to the bottom of the housing 1, and an opening for wires to pass through is provided on the end face of the waterproof cover 7. The housing 1 is bell-shaped, and the control board 60 of the fan drive unit 6 covers the opening of the housing.

Claims

1. A motor structure with good sealing effect, comprising a housing (1), a fan shroud (4), a fan (5), and a fan drive unit (6), wherein the fan drive unit (6) is disposed in the housing (1), the drive shaft (61) of the fan drive unit (6) passes through the housing (1) and is connected to the fan (5), the fan shroud is fitted over the end of the housing (1), and the fan (5) is located in the air intake cavity formed by the fan shroud (4) and the end of the housing, characterized in that: A waterproof structure is provided at the end of the housing of the connecting wind cover (4). A waterproof structure through hole that can pass through the drive shaft (61) is provided in the middle of the waterproof structure. An oil seal structure is provided on the inner wall of the waterproof structure through hole. An oil seal structure through hole that can pass through the drive shaft (61) is provided in the middle of the oil seal structure.

2. The motor structure according to claim 1, characterized in that: The waterproof structure includes a sealing disc (3), a disc mounting groove (31) is provided in the middle of the disc body of the sealing disc (3), the wind cover (4) is connected to the disc body, and air outlet holes (32) are distributed on the disc body around the disc mounting groove (31). The oil seal structure is connected to the disc mounting groove (31). When the sealing disc (3) is connected to the end of the housing, the oil seal structure is sandwiched between the disc body and the end of the housing.

3. The motor structure according to claim 2, characterized in that: The oil seal structure includes a cover (2) and a sealing ring (20). An annular oil filling cavity (21) is provided in the cover (2). An annular fitting groove (22) is provided on the inner wall of the cover (2). A groove bottom opening that can communicate with the oil filling cavity (21) is provided on the bottom surface of the fitting groove (22). The sealing ring (20) is fitted in the fitting groove (22).

4. The motor structure according to claim 3, characterized in that: The fitting groove (22) is a fitting through groove with a completely open bottom surface.

5. The motor structure according to claim 4, characterized in that: The cover (2) includes an upper cylinder and a lower disc. The diameter of the disc is larger than the diameter of the cylinder. An annular sealing protrusion (23) is provided on the top surface of the disc. The sealing protrusion (23) is in contact with the bottom surface of the disc mounting groove (31).

6. The motor structure according to claim 5, characterized in that: An annular protrusion (231) is provided on the top surface of the sealing protrusion (23). The sealing protrusion (23), the annular protrusion (231) and the cover (2) are elastic structures made of rubber. When the sealing protrusion (23) comes into contact with the disc mounting groove (31), the annular protrusion (231) is deformed by pressure and comes into contact with the bottom surface of the disc mounting groove (31).

7. The motor structure according to claim 6, characterized in that: The bottom surface of the disc is provided with an annular groove (24) that can fit a sealing gasket.

8. The motor structure according to any one of claims 2 to 7, characterized in that: An oil seal structure mounting groove (11) is provided on the end of the housing connecting the oil seal structure.

9. The motor structure according to any one of claims 1 to 7, characterized in that: A waterproof cover (7) is connected to the bottom of the housing (1), and an opening for wires to pass through is provided on the end face of the waterproof cover (7).

10. The motor structure according to any one of claims 1 to 7, characterized in that: The housing (1) is bell-shaped, and the control board (60) of the fan drive unit (6) covers the opening of the housing.

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