CN209282987U - A kind of hub motor and electric bicycle with sealing structure - Google Patents
A kind of hub motor and electric bicycle with sealing structure Download PDFInfo
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- CN209282987U CN209282987U CN201822119044.2U CN201822119044U CN209282987U CN 209282987 U CN209282987 U CN 209282987U CN 201822119044 U CN201822119044 U CN 201822119044U CN 209282987 U CN209282987 U CN 209282987U
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- seal
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- end cap
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Abstract
The utility model discloses a kind of hub motors with sealing structure, including unilateral bearing, end cap, the first central axis, stator seat, shell, first bearing and second bearing, the unilateral bearing and the end cap are interference fit or key connection, first seal is provided between the end cap and the shell, it is provided with second seal between first central axis and the first bearing, third sealing element is provided between the stator seat and the second bearing.The utility model improves the leakproofness of motor, and the impurity such as water and dust is avoided to enter motor, extends the service life of motor, guarantees that motor can also work when paddling.First seal, second seal and third sealing element use rubber material, have certain elasticity, waterproof performance is good, and price is low.
Description
Technical field
The utility model relates to hub motor technical field, in particular to a kind of hub motor and electricity with sealing structure
Dynamic bicycle.
Background technique
Motor refers to a kind of calutron that electric energy conversion or transmitting are realized according to the law of electromagnetic induction, the main work of motor
With being to generate driving torque, as electrical appliance or the power source of various machinery.
In recent years, electric vehicle has gradually been received by the majority of consumers as a kind of environmental protection, the energy-efficient vehicles, nothing
By still foreign countries, the sales volume of electric vehicle worldwide are also increasing year by year at home, electric vehicle substitutes the trend of bicycle
Gradually expand, and core component of the electric vehicle hub driving device as electric vehicle, the quality of quality often decide electronic
The superiority and inferiority of vehicle entirety.
It is existing electricity power-assisted or the small hyper tape gear hub motor of electric bicycle will appear under operating condition of paddling inside motor into
Water leads to motor damage problem.The prior art is limited by roller type one way device structure, it is necessary to be connected using screw, be led to water
It can be penetrated into inside motor through threaded hole；It can seep water into inside motor between end cap and shell, main shaft bearing and main shaft.
Utility model content
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of wheel hub electricity with sealing structure
Machine, including unilateral bearing, end cap, the first central axis, stator seat, shell, first bearing and second bearing, the unilateral bearing with
The end cap is interference fit or key connection, is provided with first seal between the end cap and the shell, in described first
It is provided with second seal between mandrel and the first bearing, is provided with third between the stator seat and the second bearing
Sealing element.
Further, the end cap is provided with the first groove, is provided with the first seal in first groove；
First central axis is provided with the second groove, is provided with the second seal in second groove；
The stator seat is provided with third groove, and the third sealing element is provided in the third groove.
Further, the end cap outer ring and the shell inner ring are clearance fit, first central axis and described the
One bearing is clearance fit, and the stator seat and the second bearing inner ring are clearance fit.
Further, the first seal, second seal and third sealing element are annular in shape.
Further, the first seal ring width is greater than first depth of groove, and the second seal ring width is big
In second depth of groove, the third sealing ring is wider than the third depth of groove.
Further, the first seal, second seal and third sealing element use rubber material.
Further, the stator seat inner ring and the second central axis are interference fit.
Further, first central axis, the second central axis and motor shaft are coaxial.
Further, the motor shaft is connect with planetary gear.
The utility model embodiment additionally provides a kind of electric bicycle, including the wheel hub electricity with sealing structure
Machine.
Implement the utility model embodiment, has the following beneficial effects: unilateral bearing described in the utility model and the end
Lid is interference fit or key connection, avoids and is bolted, prevents water from entering motor damage motor, and extend motor uses the longevity
Life；It is provided with first seal between the end cap and the shell, is set between first central axis and the first bearing
It is equipped with second seal, third sealing element is provided between the stator seat and the second bearing, improves the leakproofness of motor,
It avoids the impurity such as water and dust from entering motor, extends the service life of motor, guarantee that motor can also work when paddling.
First seal, second seal and third sealing element use rubber material, have certain elasticity, waterproof performance is good, and price is low.
Detailed description of the invention
There is the hub motor and electric bicycle of sealing structure in order to illustrate more clearly of the utility model, it below will be right
Attached drawing required for embodiment is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the cross section structure schematic diagram of the hub motor with sealing structure；
Fig. 2 is the end cover structure schematic diagram；
Fig. 3 is the stator seat structural schematic diagram；
Fig. 4 is the first center spindle structure schematic diagram.
It is marked in attached drawing as follows:
1- end cap；2- unilateral bearing；The first central axis of 3-；4- first bearing；5- shell；The second central axis of 6-；7- stator
Seat；8- second bearing；9- first seal；10- second seal；11- third sealing element；12- motor shaft；The first groove of 13-；
The second groove of 14-；15- third groove.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1:
As shown in Figures 1 to 4, in a kind of hub motor with sealing structure, including unilateral bearing 2, end cap 1, first
Mandrel 3, stator seat 7, shell 5, first bearing 4 and second bearing 8, the unilateral bearing 2 are interference fit with the end cap 1,
First seal 9 is provided between the end cap 1 and the shell 5, between first central axis 3 and the first bearing 4
It is provided with second seal 10, is provided with third sealing element 11 between the stator seat 7 and the second bearing 8.
Specifically, the unilateral bearing 2 and the end cap 1 are interference fit, avoid and are bolted, prevent water from entering electricity
Machine damages motor, extends the service life of motor.
Preferably, the end cap 1 is provided with the first groove 13, is provided with the first seal in first groove 13
9；First central axis 3 is provided with the second groove 14, and the second seal 10 is provided in second groove 14；It is described
Stator seat 7 is provided with third groove 15, and the third sealing element 11 is provided in the third groove 15.Make to assemble simpler
Fast, assembly is more smooth, prevents sealing element from shifting, and influences using effect, reduces noise, reduces friction.
Preferably, 1 outer ring of end cap and 5 inner ring of shell are clearance fit, first central axis 3 and described the
One bearing 4 is clearance fit, and the stator seat 7 is clearance fit with 8 inner ring of second bearing.
Preferably, the first seal 9, second seal 10 and third sealing element 11 are annular in shape.
Preferably, 9 ring width of first seal is greater than 13 depth of the first groove, 10 ring width of second seal
Greater than 14 depth of the second groove, 11 ring width of third sealing element is greater than 15 depth of third groove.
Preferably, the first seal 9, second seal 10 and third sealing element 11 use rubber material.
Specifically, 9 ring width of first seal is greater than 13 depth of the first groove, 10 ring width of second seal
Greater than 14 depth of the second groove, 11 ring width of third sealing element is greater than 15 depth of third groove.Groove side is
Mating surface, mating surface are clearance fit, and gap is small, and first seal 9, second seal 10 and third sealing element 11 are squeezed,
It, can be by the gap filling of mating surface, thus the effect sealed under the action of extruding force because using rubber material.
Preferably, 7 inner ring of stator seat and the second central axis 6 are interference fit, prevent the impurity such as dust and water from entering,
Influence motor performance.
Preferably, first central axis 3, the second central axis 6 and motor shaft 12 are coaxial.
Preferably, the motor shaft 12 is connect with planetary gear, and the rotation of motor shaft 12 drives planetary gear rotation.
The hub motor course of work with sealing structure is as follows: when power initiation, motor shaft 12 drives row first
Star-wheel rotation, planetary gear are rotated with ring gear, and ring gear drives electric motor end cap 1 to rotate, and electric motor end cap 1 and electric machine casing 5 are solid
Fixed connection, power finally give electric machine casing 5, and electric machine casing 5 delivers power to wheel by spoke, before final driven wheel
Into；When power supply is closed, due to vehicle inertia, vehicle is still in sliding state at this time, and wheel delivers power to motor casing at this time
Body 5, electric machine casing 5 are fixedly connected with electric motor end cap 1, and power is transferred to unilateral bearing 2 by electric motor end cap 1, at this time unilateral bearing 2
Lock in this direction, gear, stator and the rotor inside motor cannot be delivered power to, at this time the resistance of motor compared with
Small, electric bicycle can slide longer distance, ride and feel fine.
Embodiment 2:
As shown in Figures 1 to 4, in a kind of hub motor with sealing structure, including unilateral bearing 2, end cap 1, first
Mandrel 3, stator seat 7, shell 5, first bearing 4 and second bearing 8, the unilateral bearing 2 are key connection, institute with the end cap 1
It states and is provided with first seal 9 between end cap 1 and the shell 5, set between first central axis 3 and the first bearing 4
It is equipped with second seal 10, is provided with third sealing element 11 between the stator seat 7 and the second bearing 8.
Specifically, the unilateral bearing 2 and the end cap 1 are key connection, avoid and are bolted, prevent water from entering motor
Motor is damaged, the service life of motor is extended.
Preferably, the end cap 1 is provided with the first groove 13, is provided with the first seal in first groove 13
9；First central axis 3 is provided with the second groove 14, and the second seal 10 is provided in second groove 14；It is described
Stator seat 7 is provided with third groove 15, and the third sealing element 11 is provided in the third groove 15.Enhance the entirety of motor
Sealing effect.
Preferably, 1 outer ring of end cap and 5 inner ring of shell are clearance fit, first central axis 3 and described the
One bearing 4 is clearance fit, and the stator seat 7 is clearance fit with 8 inner ring of second bearing.
Preferably, the first seal 9, second seal 10 and third sealing element 11 are annular in shape.
Preferably, 9 ring width of first seal is greater than 13 depth of the first groove, 10 ring width of second seal
Greater than 14 depth of the second groove, 11 ring width of third sealing element is greater than 15 depth of third groove.
Preferably, the first seal 9, second seal 10 and third sealing element 11 use rubber material.
Specifically, 9 ring width of first seal is greater than 13 depth of the first groove, 10 ring width of second seal
Greater than 14 depth of the second groove, 11 ring width of third sealing element is greater than 15 depth of third groove.Groove side is
Mating surface, mating surface are clearance fit, and gap is small, and first seal 9, second seal 10 and third sealing element 11 are squeezed,
It, can be by the gap filling of mating surface, thus the effect sealed under the action of extruding force because using rubber material.
Preferably, 7 inner ring of stator seat and the second central axis 6 are interference fit, prevent the impurity such as dust and water from entering,
Influence motor performance.
Preferably, first central axis 3, the second central axis 6 and motor shaft 12 are coaxial.
Preferably, the motor shaft 12 is connect with planetary gear, and the rotation of motor shaft 12 drives planetary gear rotation.
Embodiment 3:
A kind of electric bicycle, including the hub motor with sealing structure.The motor of the electric vehicle has close
Seal structure can continue to travel when paddling, and hub motor water inlet will not be caused to lead to motor damage problem.
Above description sufficiently discloses specific embodiment of the present utility model.It should be pointed out that being familiar with the neck
Right of any change that the technical staff in domain does specific embodiment of the present utility model all without departing from the utility model
The range of claim.Correspondingly, the scope of the claims of the utility model is also not limited only to aforementioned specific embodiment party
Formula.
Claims (10)
1. a kind of hub motor with sealing structure, including unilateral bearing (2), end cap (1), the first central axis (3), stator seat
(7), shell (5), first bearing (4) and second bearing (8), which is characterized in that the unilateral bearing (2) and the end cap (1)
It to be interference fitted or being keyed, is provided between the end cap (1) and the shell (5) first seal (9), in described first
It is provided between mandrel (3) and the first bearing (4) second seal (10), the stator seat (7) and the second bearing
(8) third sealing element (11) are provided between.
2. the hub motor according to claim 1 with sealing structure, which is characterized in that the end cap (1) is provided with
First groove is provided with the first seal (9) in first groove；
First central axis (3) is provided with the second groove, and the second seal (10) are provided in second groove；
The stator seat (7) is provided with third groove, and the third sealing element (11) is provided in the third groove.
3. the hub motor according to claim 1 with sealing structure, which is characterized in that end cap (1) outer ring with
Shell (5) inner ring is clearance fit, and first central axis (3) and the first bearing (4) are clearance fit, described fixed
Stroma (7) and the second bearing (8) inner ring are clearance fit.
4. the hub motor according to claim 2 with sealing structure, which is characterized in that the first seal (9),
Second seal (10) and third sealing element (11) are annular in shape.
5. the hub motor according to claim 4 with sealing structure, which is characterized in that the first seal (9)
Ring width is greater than first depth of groove, and second seal (10) ring width is greater than second depth of groove, the third
Sealing element (11) ring width is greater than the third depth of groove.
6. the hub motor according to claim 1 with sealing structure, which is characterized in that the first seal (9),
Second seal (10) and third sealing element (11) use rubber material.
7. the hub motor according to claim 1 with sealing structure, which is characterized in that stator seat (7) inner ring
It is interference fit with the second central axis (6).
8. the hub motor according to claim 7 with sealing structure, which is characterized in that first central axis (3),
Second central axis (6) and motor shaft (12) are coaxial.
9. the hub motor according to claim 8 with sealing structure, which is characterized in that the motor shaft (12) and row
Star-wheel connection.
10. a kind of electric bicycle, which is characterized in that there is sealing structure including as described in any one of claims 1-9
Hub motor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822119044.2U CN209282987U (en) | 2018-12-17 | 2018-12-17 | A kind of hub motor and electric bicycle with sealing structure |
| PCT/CN2019/125702 WO2020125587A1 (en) | 2018-12-17 | 2019-12-16 | Hub motor assembly and electric bicycle comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822119044.2U CN209282987U (en) | 2018-12-17 | 2018-12-17 | A kind of hub motor and electric bicycle with sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209282987U true CN209282987U (en) | 2019-08-20 |
Family
ID=67611775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822119044.2U Active CN209282987U (en) | 2018-12-17 | 2018-12-17 | A kind of hub motor and electric bicycle with sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209282987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125587A1 (en) * | 2018-12-17 | 2020-06-25 | 宁波麦思动力系统有限公司 | Hub motor assembly and electric bicycle comprising same |
-
2018
- 2018-12-17 CN CN201822119044.2U patent/CN209282987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125587A1 (en) * | 2018-12-17 | 2020-06-25 | 宁波麦思动力系统有限公司 | Hub motor assembly and electric bicycle comprising same |
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