CN113915236B - Lubricating floating oil seal structure of electric tricycle hub motor - Google Patents
Lubricating floating oil seal structure of electric tricycle hub motor Download PDFInfo
- Publication number
- CN113915236B CN113915236B CN202111293322.6A CN202111293322A CN113915236B CN 113915236 B CN113915236 B CN 113915236B CN 202111293322 A CN202111293322 A CN 202111293322A CN 113915236 B CN113915236 B CN 113915236B
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- rubber ring
- oil seal
- ring
- hub
- inner rubber
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- 238000007667 floating Methods 0.000 title claims abstract description 15
- 230000001050 lubricating effect Effects 0.000 title abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 71
- 239000000428 dust Substances 0.000 claims abstract description 37
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000010687 lubricating oil Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Sealing Of Bearings (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a lubricating floating oil seal structure of an electric tricycle hub motor, and belongs to the technical field of new energy electric vehicles. A bearing and an oil seal are arranged between the hub central hole and the motor shaft; the oil seal comprises an inner rubber ring and an outer rubber ring sleeved outside the inner rubber ring, and a wavy gap is reserved between the inner rubber ring and the outer rubber ring; an inner ring bone support is wrapped in the inner rubber ring, an annular cavity is formed in the inner ring bone support, and lubricating oil is arranged in the annular cavity; staggered oil seepage holes are formed between the trough I of the inner rubber ring and the annular cavity of the inner ring bone support; an outer ring bone support is wrapped in the outer rubber ring; the inner peripheral surface of the outer rubber ring is wavy, the wave crest II of the outer rubber ring is opposite to the wave trough I of the inner rubber ring, and the wave trough II of the outer rubber ring is opposite to the wave crest I of the inner rubber ring. The wavy sealing gap and the lubricating oil in the wavy sealing gap play a role in lubrication and dust prevention, prevent dust particles from entering the bearing inside, prevent the bearing from being polluted and worn, and prolong the service life of the motor.
Description
Technical Field
The invention relates to the technical field of new energy electric vehicles, in particular to a lubricating floating oil seal structure of an electric tricycle hub motor.
Background
In order to protect components in the hub motor, the hub motor needs to be sealed. The sealing structure commonly used is that an oil seal is arranged outside the bearing, and in order to prolong the service life of the oil seal, a dust cover is arranged outside the oil seal to protect the lip of the oil seal. Because the oil seal has the characteristic of relative rotation, after long-time operation, friction is generated between the oil seal and the muddy sand, so that the inner hole of the oil seal is gradually enlarged, water leakage phenomenon is generated, internal elements are corroded, and the service life of the motor is reduced.
In order to reduce the abrasion of the oil seal, china patent discloses a double oil seal structure (CN 202586591U) of an electric vehicle hub motor, which comprises a hub, an end cover, a hub cover, a stator, rotor magnetic steel, a motor shaft and an outgoing line; wherein the end cover and the hub cover are respectively fixed at two ends of the hub; the rotor magnetic steel and the stator are arranged in the hub, and the rotor magnetic steel and the stator are oppositely arranged; the motor shaft penetrates through the hub, and the stator is fixed on the motor shaft; the motor shaft is provided with a threading hole, and the outgoing line passes through the threading hole and is connected with the stator; the motor shaft and the end cover are supported by a bearing, one side of the bearing is provided with a pair of oil seals, and a yellow oil layer is arranged between the pair of oil seals; the motor shaft and the hub cover are supported by another bearing, and an oil seal is arranged on one side of the bearing. According to the technical scheme, the two oil seals are arranged on one side of the end cover, and the one-layer oil layer is arranged between the oil seals, so that friction loss of the oil seals is reduced, and the service life of the motor is prolonged.
The defects of the technology are that:
the addition of an oil seal can enlarge the axial dimension of the sealing part, thereby improving the production cost; the outer oil seal is still easy to wear, and then the middle butter layer is caused to flow away, so that the lubrication and sealing effects are reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a lubricating floating oil seal structure of an electric tricycle hub motor.
The invention is realized by the following technical scheme: the utility model provides an electric tricycle wheel hub motor lubricity floating oil blanket structure, the motor shaft wears to establish in the centre bore of wheel hub, installs bearing and oil blanket between wheel hub centre bore and the motor shaft; the oil seal comprises an inner rubber ring and an outer rubber ring sleeved outside the inner rubber ring, and a gap is reserved between the inner rubber ring and the outer rubber ring; the inner rubber ring is sleeved on the motor shaft and is in interference fit with the motor shaft; the outer rubber ring is sleeved in the hub central hole, and is in interference fit with the hub central hole; an inner ring bone support is wrapped in the inner rubber ring, an annular cavity is formed in the inner ring bone support, and lubricating oil is arranged in the annular cavity; the outer peripheral surface of the inner rubber ring is wavy, the outer peripheral surface of the inner rubber ring comprises a trough I in the middle, and the two sides of the trough I are provided with wave crests I; staggered oil seepage holes are formed between the trough I of the inner rubber ring and the annular cavity of the inner ring bone support; an outer ring bone support is wrapped in the outer rubber ring; the inner peripheral surface of the outer rubber ring is wavy, the inner peripheral surface of the outer rubber ring comprises a crest II in the middle, and trough II is arranged on two sides of the crest II; the outer rubber ring wave crest II is opposite to the inner rubber ring wave crest I, and the outer rubber ring wave crest II is opposite to the inner rubber ring wave crest I.
It is further: the end face of the inner rubber ring is provided with a threaded hole communicated to the annular cavity, and a threaded plug is arranged in the threaded hole.
The hub center hole comprises a large-diameter mounting hole and a small-diameter mounting hole, and a limiting step is arranged between the large-diameter mounting hole and the small-diameter mounting hole; the bearing is installed in the large-diameter installation hole, and the oil seal is installed in the small-diameter installation hole.
And an inner check ring and an outer check ring are arranged on two sides of the oil seal, and the inner check ring is opposite to the limiting step.
A thread boss is arranged on one side of the hub, close to the oil seal, and a dust cover is arranged on the thread boss through threaded connection; the end, far away from the oil seal, of the dust cover is provided with a sealing cover, the center of the sealing cover is provided with a central hole, and the edge of the sealing cover is provided with a water draining hole; the dust-proof sleeve is sleeved with a conical sleeve; a plurality of disc-shaped dust baffle plates are arranged in the dust cover and are sleeved and fixed on the motor shaft.
The center Kong Chengzheng of the closure is hexagonal.
And a sealing gasket is arranged between the end face of the dust cover and the hub.
The center of the dust baffle is provided with an annular connecting seat, and the connecting seat is sleeved on the motor shaft in an interference fit manner.
The motor shaft is provided with a sinking groove at the matched position of the connecting seat, and the connecting seat is arranged in the motor shaft sinking groove.
Compared with the prior art, the invention has the beneficial effects that:
the wavy sealing gap is formed between the inner rubber ring and the outer rubber ring of the oil seal, the inner rubber ring is provided with an annular cavity for placing lubricating oil, and the lubricating oil enters the wavy sealing gap through the oil seepage hole, so that the lubricating effect of the oil seal is improved, and the abrasion is reduced; the lubricating oil in the wavy sealing gap also has a dustproof effect, prevents dust particles from entering the bearing inside and prevents the bearing from being polluted and worn;
the muddy water granule is piled up easily to current circuitous dustproof construction, and dirt and muddy water that can block outside dust granule and rainwater can also dredge out entering dirt cover, dust board through toper cover, water drain hole to the dirt cover cooperation dust board, prevents that inside oil blanket from receiving the pollution.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a left side view of the dust boot of FIG. 1;
in the figure: 1. a motor shaft; 2. a hub; 21. a large diameter mounting hole; 22. a small diameter mounting hole; 23. a limit step; 24. a threaded boss; 3. a bearing; 4. an oil seal; 41. an inner ring bone support; 42. an inner rubber ring; 421. a wave crest I; 422. trough I; 43. an outer rubber ring; 431. trough II; 432. a wave crest II; 44. an outer ring bone support; 45. an annular cavity; 46. lubricating oil; 47. oil penetration holes; 48. plugging a screw thread; 5. an inner retainer ring; 6. an outer retainer ring; 7. a dust cover; 71. a cover; 711. a water discharge hole; 8. a dust-blocking plate; 81. a connecting seat; 9. a conical sleeve; 10. and rib plates.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, in the lubricating floating oil seal structure of the hub motor of the electric tricycle, a motor shaft 1 is arranged in a central hole of a hub 2 in a penetrating manner, and a bearing 3 and an oil seal 4 are arranged between the central hole of the hub 2 and the motor shaft 1. The rib plates 10 are welded on the side face of the hub 2, so that the unbalanced load resistance of the hub 2 is improved.
The hub 2 center hole includes a large diameter mounting hole 21 and a small diameter mounting hole 22, and a limiting step 23 is provided between the large diameter mounting hole 21 and the small diameter mounting hole 22. The bearing 3 is installed in the large-diameter installation hole 21 and is positioned by a limit step 23 and a step on the motor shaft 1. The oil blanket 4 is installed in minor diameter mounting hole 22, and the both sides of oil blanket 4 are provided with interior retaining ring 5 and outer retaining ring 6, and interior retaining ring 5 is relative with spacing step 23. The oil seal 4 is positioned by the limiting step 23 and the inner retainer ring 5.
The oil seal 4 comprises an inner rubber ring 42 and an outer rubber ring 43 sleeved outside the inner rubber ring 42, and a wavy gap is reserved between the inner rubber ring 42 and the outer rubber ring 43. The inner rubber ring 42 is sleeved on the motor shaft 1, and the inner rubber ring 42 is in interference fit with the motor shaft 1. The outer rubber ring 43 is sleeved in the central hole of the hub 2, and the outer rubber ring 43 is in interference fit with the central hole of the hub 2.
The inner rubber ring 42 is internally wrapped with an inner ring bone support 41. The inner ring bone support 41 is made of metal, an annular cavity 45 is formed in the inner ring bone support 41, and lubricating oil 46 is arranged in the annular cavity 45. The end face of the inner rubber ring 42 is provided with a threaded hole communicated with the annular cavity 45, a threaded plug 48 is arranged in the threaded hole, and lubricating oil 46 is introduced through the threaded hole. The outer peripheral surface of the inner rubber ring 42 is wavy, the outer peripheral surface of the inner rubber ring 42 comprises a trough I422 in the middle, and the two sides of the trough I422 are provided with wave crests I421. Staggered oil seepage holes 47 are formed between the wave trough I422 of the inner rubber ring 42 and the annular cavity 45 of the inner ring bone support 41. The peripheral surface of the inner ring bone support 41 and the inner rubber ring 42 have a certain gap, and the lubricating oil 46 in the annular cavity 45 reaches the trough I422 of the inner rubber ring 42 through the oil seepage holes 47 on the inner ring bone support 41 and the gap and the oil seepage holes 47 on the inner rubber ring 42.
The outer rubber ring 43 is internally wrapped with an outer ring bone support 44. The outer ring bone support 44 is made of metal, and the inner circumferential surface of the outer rubber ring 43 is wavy. The inner peripheral surface of the outer rubber ring 43 comprises a peak II 432 in the middle, and trough II 431 is arranged on two sides of the peak II 432. The crest II 432 of the outer rubber ring 43 is opposite to the crest I422 of the inner rubber ring 42, and the crest II 431 of the outer rubber ring 43 is opposite to the crest I421 of the inner rubber ring 42. In the low position, the lubricant 46 in the trough I422 of the inner rubber ring 42 flows to the trough II 431 of the outer rubber ring 43.
As shown in fig. 1 and 3, a threaded boss 24 is arranged on one side of the hub 2 close to the oil seal 4, and a dust cover 7 is arranged on the threaded boss 24 through threaded connection. A sealing gasket 10 is arranged between the end face of the dust cover 7 and the hub 2. The end of the dust cover 7 far away from the oil seal 4 is provided with a sealing cover 71, and the center of the sealing cover 71 is provided with a center hole. The cap 71 is hexagonal in shape at the center Kong Chengzheng to facilitate tightening of the dust cap 7 by a tool.
The edge of the cover 71 is provided with a drain hole 711. The dust cover 7 is sleeved with a conical cover 9 with a conical inner surface, the diameter of the left end of the conical cover 9 is large, and mud water entering the conical cover 9 can flow leftwards and is discharged through a water discharge hole 711. A plurality of disc-shaped dust plates 8 are arranged in the dust cover 7, an annular connecting seat 8-1 is arranged in the center of each dust plate 8, and the connecting seat 8-1 is made of elastic materials, such as rubber. The sunk groove is offered to motor shaft 1 and dirt board 8 connecting seat 81 complex position, and dirt board 8 connecting seat 81 is located motor shaft 1 sunk groove, and connecting seat 81 interference fit cover is adorned on motor shaft 1, ensures that dust board 8 installs stably.
Working principle:
a wavy sealing gap is formed between the inner rubber ring 42 and the outer rubber ring 43 of the oil seal 4; the lubricating oil 46 in the annular cavity 45 reaches the trough I422 of the inner rubber ring 42 through the oil seepage holes 47 and gaps on the inner ring bone support 41 and the oil seepage holes 47 on the inner rubber ring 42; in the low position, the lubricating oil 46 in the trough I422 of the inner rubber ring 42 flows to the trough II 431 of the outer rubber ring 43, so that the wavy sealing gap is fully filled with the lubricating oil 46, the lubricating effect of the oil seal is improved, and the abrasion is reduced; the wavy sealing gap and the lubricating oil also have dustproof effect, prevent dust particles from entering the bearing inside and prevent the bearing 3 from being polluted and worn;
the dust cover 7 cooperates the dust board 8 can block outside dust particle and rainwater, can also dredge filth and muddy water that gets into dust cover 7, dust board 8 through toper cover 9, water drain 711, prevents that inside oil blanket 4 from receiving the pollution.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A motor shaft (1) is arranged in a central hole of a wheel hub (2) in a penetrating way, and a bearing (3) and an oil seal (4) are arranged between the central hole of the wheel hub (2) and the motor shaft (1); the method is characterized in that:
the oil seal (4) comprises an inner rubber ring (42) and an outer rubber ring (43) sleeved outside the inner rubber ring (42), and a wavy gap is reserved between the inner rubber ring (42) and the outer rubber ring (43); the inner rubber ring (42) is sleeved on the motor shaft (1), and the inner rubber ring (42) is in interference fit with the motor shaft (1); the outer rubber ring (43) is sleeved in the central hole of the hub (2), and the outer rubber ring (43) is in interference fit with the central hole of the hub (2);
an inner ring bone support (41) is wrapped in the inner rubber ring (42), an annular cavity (45) is formed in the inner ring bone support (41), and lubricating oil (46) is arranged in the annular cavity (45); the outer peripheral surface of the inner rubber ring (42) is wavy, the outer peripheral surface of the inner rubber ring (42) comprises a trough I (422) in the middle, and the two sides of the trough I (422) are provided with wave crests I (421); staggered oil seepage holes (47) are formed between the wave trough I (422) of the inner rubber ring (42) and the annular cavity (45) of the inner ring bone support (41);
an outer ring bone support (44) is wrapped in the outer rubber ring (43); the inner peripheral surface of the outer rubber ring (43) is wavy, the inner peripheral surface of the outer rubber ring (43) comprises a crest II (432) in the middle, and trough II (431) are arranged on two sides of the crest II (432); the wave crest II (432) of the outer rubber ring (43) is opposite to the wave crest I (422) of the inner rubber ring (42), and the wave crest II (431) of the outer rubber ring (43) is opposite to the wave crest I (421) of the inner rubber ring (42).
2. The electric tricycle hub motor lubricity floating oil seal structure of claim 1, wherein: the end face of the inner rubber ring (42) is provided with a threaded hole communicated with the annular cavity (45), and a thread plug (48) is arranged in the threaded hole.
3. The electric tricycle hub motor lubricity floating oil seal structure of claim 1, wherein: the hub (2) center hole comprises a large-diameter mounting hole (21) and a small-diameter mounting hole (22), and a limiting step (23) is arranged between the large-diameter mounting hole (21) and the small-diameter mounting hole (22); the bearing (3) is arranged in the large-diameter mounting hole (21), and the oil seal (4) is arranged in the small-diameter mounting hole (22).
4. The electric tricycle hub motor lubricity floating oil seal structure of claim 3, wherein: the two sides of the oil seal (4) are provided with an inner retainer ring (5) and an outer retainer ring (6), and the inner retainer ring (5) is opposite to the limiting step (23).
5. The electric tricycle hub motor lubricity floating oil seal structure of claim 1, wherein: a thread boss (24) is arranged on one side of the hub (2) close to the oil seal (4), and a dust cover (7) is arranged on the thread boss (24) through threaded connection; one end of the dust cover (7) far away from the oil seal (4) is provided with a sealing cover (71), the center of the sealing cover (71) is provided with a center hole, and the edge part of the sealing cover (71) is provided with a water drain hole (711); a conical sleeve (9) is sleeved in the dustproof sleeve (7); a plurality of disc-shaped dust plates (8) are arranged in the dust cover (7), and the dust plates (8) are sleeved and fixed on the motor shaft (1).
6. The electric tricycle hub motor lubricity floating oil seal structure of claim 5, wherein: the center Kong Chengzheng of the cover (71) is hexagonal.
7. The electric tricycle hub motor lubricity floating oil seal structure of claim 5, wherein: a sealing gasket is arranged between the end face of the dust cover (7) and the hub (2).
8. The electric tricycle hub motor lubricity floating oil seal structure of claim 5, wherein: the center of the dust baffle (8) is provided with an annular connecting seat (81), and the connecting seat (81) is sleeved on the motor shaft (1) in an interference fit manner.
9. The electric tricycle hub motor lubricity floating oil seal structure of claim 8, wherein: the motor shaft (1) is provided with a sink groove at the matched position of the connecting seat (81), and the connecting seat (81) is positioned in the sink groove of the motor shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111293322.6A CN113915236B (en) | 2021-11-03 | 2021-11-03 | Lubricating floating oil seal structure of electric tricycle hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111293322.6A CN113915236B (en) | 2021-11-03 | 2021-11-03 | Lubricating floating oil seal structure of electric tricycle hub motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113915236A CN113915236A (en) | 2022-01-11 |
| CN113915236B true CN113915236B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111293322.6A Active CN113915236B (en) | 2021-11-03 | 2021-11-03 | Lubricating floating oil seal structure of electric tricycle hub motor |
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| Country | Link |
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| CN (1) | CN113915236B (en) |
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| CN205101565U (en) * | 2015-11-16 | 2016-03-23 | 温岭市九洲电机制造有限公司 | Combination oil seal structure |
| CN208299588U (en) * | 2018-07-06 | 2018-12-28 | 九洲新能源有限公司 | Oil sealing dustproof cover and wheel hub electric motor of electric vehicle |
| CN209200810U (en) * | 2018-12-28 | 2019-08-02 | 温岭市九洲电机制造有限公司 | A kind of oil sealing dustproof construction of wheel hub electric motor of electric vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200734562A (en) * | 2006-03-03 | 2007-09-16 | Nak Sealing Technologies Corp | Sealing apparatus |
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2021
- 2021-11-03 CN CN202111293322.6A patent/CN113915236B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599329Y (en) * | 2003-03-05 | 2004-01-14 | 青岛基珀密封工业有限公司 | Combined washer oil seal |
| JP2005016557A (en) * | 2003-06-23 | 2005-01-20 | Hosokawa Micron Corp | Shaft seal structure, and stirring device using the same |
| CN203027070U (en) * | 2012-12-07 | 2013-06-26 | 浙江旺得福车业有限公司 | Electric vehicle wheel hub motor with oil seal protecting cover |
| CN205101565U (en) * | 2015-11-16 | 2016-03-23 | 温岭市九洲电机制造有限公司 | Combination oil seal structure |
| CN208299588U (en) * | 2018-07-06 | 2018-12-28 | 九洲新能源有限公司 | Oil sealing dustproof cover and wheel hub electric motor of electric vehicle |
| CN209200810U (en) * | 2018-12-28 | 2019-08-02 | 温岭市九洲电机制造有限公司 | A kind of oil sealing dustproof construction of wheel hub electric motor of electric vehicle |
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| CN113915236A (en) | 2022-01-11 |
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