CN201312196Y - Electric vehicle hub - Google Patents
Electric vehicle hub Download PDFInfo
- Publication number
- CN201312196Y CN201312196Y CNU2008202168577U CN200820216857U CN201312196Y CN 201312196 Y CN201312196 Y CN 201312196Y CN U2008202168577 U CNU2008202168577 U CN U2008202168577U CN 200820216857 U CN200820216857 U CN 200820216857U CN 201312196 Y CN201312196 Y CN 201312196Y
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- China
- Prior art keywords
- gear
- electric vehicle
- cam
- hub
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an electric vehicle hub with a hub motor and a planetary gear reduction mechanism, which comprises a hub case and a front cover, wherein a motor and a planetary gear reduction mechanism are mounted in the hub case; the planetary gear reduction mechanism comprises a duplex gear, an inner tooth ring and a gear holder; the duplex gear is respectively meshed with the spindle gear of the motor rotor and the inner tooth ring. The electric vehicle hub is characterized in that the inner tooth ring is fixed on the gear cover; a support base is fixed at the inner side of the front cover; and a cam mechanism is provided between the gear cover and the support base. The electric vehicle hub has simple, compact and reasonable structure, wherein when in use after being powered, the cam mechanism can drive the hub to move forward via one-way function, without reduced transmission efficiency, and when the electric vehicle hub is not powered, the one-way function of the cam mechanism can generate clearance between the support base and the cam, thereby avoiding driving the gear reduction mechanism and the rotor, to obtain low torque and easy propulsion.
Description
Technical field
The utility model relates to a kind of electric vehicle hub, specifically has the electric vehicle hub of wheel hub motor and planetary gear reducing mechanism.
Background technology
Existing electric vehicle hub as shown in Figure 1, wheel hub comprises wheel hub shell 1 and protecgulum 9, in wheel hub shell 1 motor and planetary gear reducing mechanism is housed.Motor comprises stator 2 and rotor 4; Planetary gear reducing mechanism comprises duplicate gear 6, ring gear 10 and gear retainer 19; Duplicate gear 6 meshes with the axle 21 of rotor 4 and the ring gear 10 that is fixed on the protecgulum 9 respectively.
When electric motor car was switched on, rotor 4 rotated, and 21 rotations of rotor axle drive planetary gear reducing mechanism, drive the ring gear 10 that is fixed on the wheel hub protecgulum 9 by planetary gear reducing mechanism again, and then drive the wheel hub rotation, and the wheel rotation is advanced.
The problem that above-mentioned electric wheel hub structure exists is that when the electric motor car of no power state hand push, because ring gear 10 is fixed on the wheel hub protecgulum 9, the rotating transmission of torque of wheel hub will come back to axle 21.In this rotation process,, can produce magnetic resistance between stator, make the torque meeting quite big, so hand push electric motor car meeting is relatively required great effort and change because of driving rotor 4.
Summary of the invention
The utility model provides a kind of electric vehicle hub that can easily promote vehicle when the no power state at above-mentioned the deficiencies in the prior art.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of electric vehicle hub, comprise wheel hub shell and protecgulum, in the wheel hub shell, motor and planetary gear reducing mechanism are housed, planetary gear reducing mechanism comprises duplicate gear, ring gear and gear retainer, duplicate gear respectively with the axle gear of rotor and ring gear engagement, feature is: described ring gear is fixed on the gear cap, and the inboard of described protecgulum is fixed with supporting seat, between described gear cap and described supporting seat cam mechanism is set.
Described cam mechanism comprises cam, has groove on the inner cylinder face of described cam, is provided with spring and roller in the groove, and the bottom surface of groove is an arc surface, the external cylindrical surface decentraction of described arc surface and described cam.
Described groove has two or more.
Also be provided with step surface on the bottom surface of described groove, this step surface is a plane, and described spring is arranged on the described step surface.
Compared with the prior art the utility model has the following advantages: the utility model is simple in structure, compactness, rationally; When the energising running, because the single effect of cam mechanism realizes the drive of advancing of wheel hub, transmission efficiency does not subtract; During no power, produce the gap because the single effect of cam mechanism makes between supporting seat and the cam, thereby need not driven gear reducing gear and rotor, torque is less, and go-cart is easy.
Description of drawings
Fig. 1 is the structural representation of electric vehicle hub of the prior art.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the schematic diagram of the cam mechanism in the utility model.
Embodiment
Below in conjunction with the embodiment in the accompanying drawing the utility model is further described.
As Fig. 2, shown in Figure 3, comprise wheel hub shell 1, stator 2, stator seat 3, rotor 4, motor casing 5, duplicate gear 6, O type rubber ring 7, pan head screw 8, protecgulum 9, ring gear 10, pan head screw 11, spring washer 12, pad 13, cam mechanism 14, special axis bolt 15, supporting seat 16, ball bearing 17, gear cap 18, gear retainer 19, O type rubber ring 20, axle 21, ball bearing 22, hex bolts 23, cam 24, step surface 25, groove 26, bottom surface 27, spring 28 and roller 29 etc.
As shown in Figure 2, the utility model comprises wheel hub shell 1 and protecgulum 9, and wheel hub shell 1 is connected by pan head screw 8 with protecgulum 9, and O type rubber ring 7 also is housed between them.In wheel hub shell 1, motor and planetary gear reducing mechanism are housed.
Motor is made up of motor casing 5, stator seat 3, stator 2, rotor 4 and axle 21, stator 2 is fixed on the stator seat 3, motor casing 5 and stator seat 3 link into an integrated entity by bolt, and stator seat 3 is installed in the side of wheel hub shell 1 by ball bearing 22, and the end of stator seat 3 is fixed with hex bolts 23.Rotor 4 is contained on the axle 21.
Planetary gear reducing mechanism comprises duplicate gear 6, ring gear 10 and gear retainer 19.Duplicate gear 6 has 3.Duplicate gear 6 is installed in by axle on the end face of motor casing 5, and O type rubber ring 20 is housed on axle.The other end that duplicate gear is 6 is contained on the gear retainer 19, between gear retainer 19 and the duplicate gear 6 pad 13 is housed also.Duplicate gear 6 respectively with axle 21 gears of rotor 4 and ring gear 10 engagements.Ring gear 10 is fixed on the gear cap 18 by pan head screw 11 and spring washer 12.The inboard of protecgulum 9 is fixed with supporting seat 16, is equipped with special axis bolt 15 by ball bearing 17 in the axis hole of supporting seat 16.Special axis bolt 15 and hex bolts 23 protrude in wheel hub and are used for wheel hub is fixed on the vehicle frame in order to fixing two back shafts of usefulness.
Between gear cap 18 and supporting seat 16, cam mechanism 14 is set.As shown in Figure 3, cam mechanism 14 comprises cam 24, has groove 26 on the inner cylinder face of cam 24, is provided with spring 28 and roller 29 in the groove 26, and the bottom surface 27 of groove 26 is an arc surface, the external cylindrical surface decentraction of arc surface and cam 24.Groove 26 has two or more.Also be provided with step surface 25 on the bottom surface 27 of groove 26, this step surface 25 is a plane, and described spring 28 is arranged on the step surface 25.
Operation principle of the present utility model is: in "on" position, electric motor starting rotation makes axle 21 high speed rotating.By meshing 3 duplicate gears 6, make its rotation, drive ring gear 10 rotations again.And ring gear 10 and gear cap 18 link together, adding cam mechanism 14 is fixed on the gear cap 18, single effect by cam mechanism 14 drives supporting seat 16 rotations, and supporting seat 16 and protecgulum 9 pass through bolted, and protecgulum 9 is connected by pan head screw 8 with wheel hub shell 1, so monolithic case rotates thereupon, and then the rotation of drive wheel is advanced.
And the utility model structure, when "on" position not, drive supporting seat 16 rotations by wheel hub shell 1 and protecgulum 9, and cam mechanism 14 plays a key effect at this moment, promptly utilize the roller 3 in the cam mechanism 14 to compress spring 2, make and produce little gap between roller 3 and the cam 24, just can promote wheel hub 1 with slight strength this moment, this process must not passed through gear reduction and rotor 21 again, promote resistance drop to minimum, so promote wheel hub 1 than leicht fallen D/A, so electric motor car realizes light go-cart through this cam mechanism 14.
Claims (4)
1. electric vehicle hub, comprise wheel hub shell (1) and protecgulum (9), in wheel hub shell (1), motor and planetary gear reducing mechanism are housed, planetary gear reducing mechanism comprises duplicate gear (6), ring gear (10) and gear retainer (19), duplicate gear (6) respectively with axle (21) gear of rotor (4) and ring gear (10) engagement, it is characterized in that: described ring gear (10) is fixed on the gear cap (18), the inboard of described protecgulum (9) is fixed with supporting seat (16), between described gear cap (18) and described supporting seat (16) cam mechanism (14) is set.
2. according to the described electric vehicle hub of claim 1, it is characterized in that described cam mechanism (14) comprises cam (24), have groove (26) on the inner cylinder face of described cam (24), be provided with spring (28) and roller (29) in the groove (26), the bottom surface (27) of groove (26) is an arc surface, the external cylindrical surface decentraction of described arc surface and described cam (24).
3. according to the described electric vehicle hub of claim 2, it is characterized in that described groove (26) has two or more.
4. according to the described electric vehicle hub of claim 2, it is characterized in that also being provided with step surface (25) on the bottom surface (27) of described groove (26), this step surface (25) is a plane, described spring (28) is arranged on the described step surface 25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202168577U CN201312196Y (en) | 2008-11-20 | 2008-11-20 | Electric vehicle hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202168577U CN201312196Y (en) | 2008-11-20 | 2008-11-20 | Electric vehicle hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201312196Y true CN201312196Y (en) | 2009-09-16 |
Family
ID=41109450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202168577U Expired - Fee Related CN201312196Y (en) | 2008-11-20 | 2008-11-20 | Electric vehicle hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201312196Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906678A (en) * | 2011-10-31 | 2014-07-02 | 松下电器产业株式会社 | Electric vehicle hub device, and electric bicycle |
| CN108443422A (en) * | 2018-05-07 | 2018-08-24 | 北京理工大学 | A kind of wheel motor drive device |
-
2008
- 2008-11-20 CN CNU2008202168577U patent/CN201312196Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906678A (en) * | 2011-10-31 | 2014-07-02 | 松下电器产业株式会社 | Electric vehicle hub device, and electric bicycle |
| CN103906678B (en) * | 2011-10-31 | 2016-10-26 | 松下电器产业株式会社 | Electric motor car wheel spindle device and electric bicycle |
| CN108443422A (en) * | 2018-05-07 | 2018-08-24 | 北京理工大学 | A kind of wheel motor drive device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20111120 |