CN220337389U - Cylindrical shaft rod sealing structure of hub motor - Google Patents
Cylindrical shaft rod sealing structure of hub motor Download PDFInfo
- Publication number
- CN220337389U CN220337389U CN202322047704.1U CN202322047704U CN220337389U CN 220337389 U CN220337389 U CN 220337389U CN 202322047704 U CN202322047704 U CN 202322047704U CN 220337389 U CN220337389 U CN 220337389U
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- cylinder shaft
- shaft rod
- hole
- annular groove
- motor shell
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- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000008439 repair process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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Abstract
The utility model discloses a cylinder shaft rod sealing structure of a hub motor, which comprises a motor shell, a cylinder shaft rod and a planetary gear transmission mechanism arranged in the motor shell, wherein the planetary gear transmission mechanism comprises a sun gear, a planetary gear and a planetary gear support; the sun gear is provided with a perforation, one end of the motor shell is provided with an end hole, and the planet gear support forms a support hole at the other end of the motor shell; the cylinder shaft rod is sequentially inserted into the end hole, the perforation and the bracket hole, a first sealing ring is arranged between the cylinder shaft rod and the bracket hole, and a second sealing ring is arranged between the cylinder shaft rod and the end hole; the cylinder shaft lever is provided with a first annular groove, the first annular groove corresponds to the bracket hole, and the first sealing ring is arranged in the first annular groove; the planet wheel support is fixed with the cylinder shaft rod relatively, and the first sealing ring is in a compressed shape in the first annular groove. The utility model optimizes the sealing structure of the inner cylinder shaft lever of the hub motor, so that the sealing structure is convenient to assemble, low in cost and easy to maintain and repair.
Description
Technical Field
The utility model relates to the technical field of hub motors, in particular to a cylinder shaft rod sealing structure of a hub motor.
Background
In the current market, the sealing measure of the cylindrical shaft hub motor is mostly to add an oil seal in the motor, and the sealing measure leads to various and complex processing procedures of parts in the motor, large occupied space, difficult assembly and high price, and the maintenance and repair of the oil seal in the later stage are difficult, so that there is room for improvement.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides a cylinder shaft rod sealing structure of a hub motor, and the sealing structure of the inner cylinder shaft rod of the hub motor is optimized.
The technical scheme is as follows: in order to achieve the above purpose, the utility model provides a cylinder shaft rod sealing structure of a hub motor, which comprises a motor shell, a cylinder shaft rod and a planetary gear transmission mechanism arranged in the motor shell, wherein the planetary gear transmission mechanism comprises a sun gear, a planetary gear and a planetary gear support; the sun gear is provided with a perforation, one end of the motor shell is provided with an end hole, and the planet gear support forms a support hole at the other end of the motor shell; the cylinder shaft rod is sequentially inserted into the end hole, the perforation and the bracket hole, a first sealing ring is arranged between the cylinder shaft rod and the bracket hole, and a second sealing ring is arranged between the cylinder shaft rod and the end hole.
Further, a first annular groove is formed in the shaft rod, the first annular groove corresponds to the bracket hole, and the first sealing ring is arranged in the first annular groove.
Further, the planet wheel support and the cylinder shaft rod are relatively fixed, and the first sealing ring is in a compressed shape in the first annular groove.
Further, the sun gear is cylindrical, and the inside of the sun gear is provided with the through hole; the sun gear is rotatably arranged in the motor casing, and the cylinder shaft rod is in clearance fit with the through hole.
Further, a rotor and a stator which are matched with each other are arranged in the motor shell; the rotor is arranged on the outer ring of the sun gear, and the rotor correspondingly drives the sun gear to rotate when rotating.
Further, the sun gear is installed in the motor shell through a bearing, so that the sun gear can rotate relative to the motor shell.
Further, the stator is fixedly mounted on the planet carrier.
Further, a second annular groove is formed in the cylinder shaft rod, the second annular groove corresponds to the end hole, a second sealing ring is arranged in the second annular groove, and the cylinder shaft rod is in rotary sealing fit with the end hole through the second sealing ring.
Further, an inner gear ring is arranged in the motor shell; the sun wheel is meshed with the planet wheel for transmission, the planet wheel is meshed with the inner gear ring for transmission, and the sun wheel can drive the motor shell to rotate through the planet wheel and the inner gear ring, so that the end hole is in running fit with the cylinder shaft rod.
The beneficial effects are that: according to the cylinder shaft rod sealing structure of the hub motor, the cylinder shaft rod is sequentially inserted into the end hole on the motor shell, the through hole in the sun wheel and the support hole on the planet wheel support, the first sealing ring is arranged between the cylinder shaft rod and the end hole, and the second sealing ring is arranged between the cylinder shaft rod and the support hole, so that the cylinder shaft rod can be well watertight.
Drawings
FIG. 1 is a schematic structural view of a cartridge shaft;
FIG. 2 is a schematic diagram of the assembly of a cartridge shaft within a motor housing;
fig. 3 is a simplified diagram of the transmission within the motor housing.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
A cylindrical shaft rod 2 sealing structure of an in-wheel motor as described in fig. 1 to 3, comprising a motor housing 1, a cylindrical shaft rod 2 and a planetary gear transmission mechanism arranged in the motor housing 1, wherein the planetary gear transmission mechanism comprises a sun gear 3, a planetary gear 4 and a planetary gear support 5, the sun gear 3 is meshed with the planetary gear 4 for transmission, and the planetary gear 4 is rotatably arranged on the planetary gear support 5.
The sun wheel 3 is provided with a perforation 6; the motor shell 1 is arranged in a hollow way, and an end hole 7 is formed in one end of the motor shell 1; the planetary gear carrier 5 includes a cylindrical portion 17, and the cylindrical portion 17 is inserted through the other end of the motor housing 1, so that the cylindrical portion 17 of the planetary gear carrier 5 forms a carrier hole 8 at the other end of the motor housing 1. The cylinder shaft lever 2 is sequentially inserted into the end hole 7, the perforation 6 and the bracket hole 8, a first sealing ring 9 is arranged between the cylinder shaft lever 2 and the bracket hole 8, a second sealing ring 10 is arranged between the cylinder shaft lever 2 and the end hole 7, and sealing between the cylinder shaft lever 2 and the motor shell 1 is realized through the first sealing ring 9 and the second sealing ring 10, so that the cylinder shaft lever has good sealing and waterproof effects.
The cylinder shaft rod 2 is a straight rod, a first annular groove 11 is formed in the cylinder shaft rod 2, and the first annular groove 11 corresponds to the bracket hole 8. When the cartridge shaft 2 is inserted into the motor housing 1, the first annular groove 11 is correspondingly positioned in the bracket hole 8. The first sealing ring 9 is correspondingly arranged in the first annular groove 11.
The planet wheel support 5 with the cylinder shaft 2 is fixed relatively, and first sealing washer 9 has certain elastic deformation ability, first sealing washer 9 is compressed in first annular groove 11, makes first sealing washer 9 hug closely in the inner wall in cylinder shaft 2 and support hole 8, promotes waterproof sealing effect.
The sun gear 3 is cylindrical, and the through hole 6 is formed in the sun gear 3. The sun gear 3 is rotatably arranged in the motor shell 1, the cylinder shaft rod 2 is in clearance fit with the through hole 6, and friction between the sun gear 3 and the cylinder shaft rod 2 is avoided, so that rotation of the sun gear 3 is influenced.
The motor shell 1 is internally provided with a rotor 14 and a stator 15 which are matched with each other, and when the interior of the motor shell 1 is electrified, the rotor 14 can rotate relative to the stator 15 under the electromagnetic action. The rotor 14 is mounted on the outer ring of the sun gear 3, and the rotor 14 correspondingly drives the sun gear 3 to rotate when rotating.
The sun gear 3 is mounted in the motor housing 1 through a bearing 13, so that the sun gear 3 can rotate relative to the motor housing 1.
As shown in fig. 3, the stator 15 is fixedly mounted on the planet carrier 5 such that the stator 15 remains stationary as the rotor 14 rotates.
The cylinder shaft rod 2 is provided with a second annular groove 12, and the second annular groove 12 corresponds to the end hole 7. When the cartridge shaft 2 is inserted into the motor housing 1, the second annular groove 12 is correspondingly located in the end hole 7. The second sealing ring 10 is arranged in the second annular groove 12, and the cylinder shaft lever 2 is in rotary sealing fit with the end hole 7 through the second sealing ring 10.
An inner gear ring 16 is arranged in the motor housing 1. The sun wheel 3 is in meshed transmission with the planet wheel 4, the planet wheel 4 is in meshed transmission with the inner gear ring 16, the sun wheel 3 can drive the motor shell 1 to rotate through the planet wheel 4 and the inner gear ring 16, the drum shaft lever 2 and the motor shell 1 can rotate relatively, and therefore the end hole 7 is in rotary fit with the drum shaft lever 2.
According to the utility model, the cylindrical shaft rod 2 is sequentially inserted into the end hole 7 on the motor shell 1, the through hole 6 in the sun gear 3 and the support hole 8 on the planet gear support 5, and the two ends of the cylindrical shaft rod 2 are sealed through the first sealing ring 9 and the second sealing ring 10, so that the cylindrical shaft rod has a good sealing waterproof effect, is convenient to assemble, and is easy to maintain and repair.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (9)
1. A cylinder shaft rod (2) sealing structure of a hub motor, which is characterized in that: the planetary gear transmission mechanism comprises a motor shell (1), a cylinder shaft rod (2) and a planetary gear transmission mechanism arranged in the motor shell (1), wherein the planetary gear transmission mechanism comprises a sun gear (3), a planetary gear (4) and a planetary gear support (5); a through hole (6) is formed in the sun gear (3), an end hole (7) is formed in one end of the motor shell (1), and a support hole (8) is formed in the other end of the motor shell (1) by the planet wheel support (5); the cylinder shaft lever (2) is sequentially inserted into the end hole (7), the perforation (6) and the bracket hole (8), a first sealing ring (9) is arranged between the cylinder shaft lever (2) and the bracket hole (8), and a second sealing ring (10) is arranged between the cylinder shaft lever (2) and the end hole (7).
2. The cylindrical shaft rod (2) sealing structure of the hub motor according to claim 1, wherein: the cylinder shaft rod (2) is provided with a first annular groove (11), the first annular groove (11) corresponds to the bracket hole (8), and the first sealing ring (9) is arranged in the first annular groove (11).
3. The cylindrical shaft rod (2) sealing structure of the hub motor according to claim 2, wherein: the planet wheel support (5) and the cylinder shaft rod (2) are relatively fixed, and the first sealing ring (9) is in a compressed shape in the first annular groove (11).
4. The cylindrical shaft rod (2) sealing structure of the hub motor according to claim 1, wherein: the sun gear (3) is cylindrical, and the inside of the sun gear is provided with the through hole (6); the sun gear (3) is rotatably arranged in the motor shell (1), and the cylinder shaft rod (2) is in clearance fit with the through hole (6).
5. The cylinder shaft (2) sealing structure of an in-wheel motor according to claim 4, wherein: a rotor (14) and a stator (15) which are matched with each other are arranged in the motor shell (1); the rotor (14) is arranged on the outer ring of the sun gear (3), and the rotor (14) correspondingly drives the sun gear (3) to rotate when rotating.
6. The cylinder shaft (2) sealing structure of an in-wheel motor according to claim 5, wherein: the sun gear (3) is arranged in the motor shell (1) through a bearing (13), so that the sun gear (3) can rotate relative to the motor shell (1).
7. The cylinder shaft (2) sealing structure of an in-wheel motor according to claim 5, wherein: the stator (15) is fixedly arranged on the planet wheel support (5).
8. The cylinder shaft (2) sealing structure of an in-wheel motor according to claim 4, wherein: the cylinder shaft rod (2) is provided with a second annular groove (12), the second annular groove (12) corresponds to the end hole (7), the second sealing ring (10) is arranged in the second annular groove (12), and the cylinder shaft rod (2) is in rotary sealing fit with the end hole (7) through the second sealing ring (10).
9. The cylindrical shaft rod (2) sealing structure of the hub motor according to claim 8, wherein: an inner gear ring (16) is arranged in the motor shell (1); the sun wheel (3) is in meshed transmission with the planet wheel (4), the planet wheel (4) is in meshed transmission with the inner gear ring (16), and the sun wheel (3) can drive the motor shell (1) to rotate through the planet wheel (4) and the inner gear ring (16) so that the end hole (7) is in rotary fit with the cylinder shaft rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322047704.1U CN220337389U (en) | 2023-08-01 | 2023-08-01 | Cylindrical shaft rod sealing structure of hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322047704.1U CN220337389U (en) | 2023-08-01 | 2023-08-01 | Cylindrical shaft rod sealing structure of hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220337389U true CN220337389U (en) | 2024-01-12 |
Family
ID=89450307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322047704.1U Active CN220337389U (en) | 2023-08-01 | 2023-08-01 | Cylindrical shaft rod sealing structure of hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220337389U (en) |
-
2023
- 2023-08-01 CN CN202322047704.1U patent/CN220337389U/en active Active
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