CN211127453U - Bilateral drive gear shifting hub - Google Patents
Bilateral drive gear shifting hub Download PDFInfo
- Publication number
- CN211127453U CN211127453U CN202020141384.XU CN202020141384U CN211127453U CN 211127453 U CN211127453 U CN 211127453U CN 202020141384 U CN202020141384 U CN 202020141384U CN 211127453 U CN211127453 U CN 211127453U
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- Prior art keywords
- driving
- fixed
- end cover
- centrifugal
- hub
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- Expired - Fee Related
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- 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
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model relates to an electric vehicle wheel hub, in particular to a bilateral drive gear shifting wheel hub, which comprises a wheel hub, a central shaft and a motor comprising a stator and a rotor, wherein the stator is fixed on the central shaft, and the rotor and the wheel hub are arranged coaxially with the central shaft; the sun gear is fixed on the rotor and is arranged coaxially with the central shaft; the gear ring and the sun gear are arranged coaxially; the one-way clutch is fixed on the central shaft; the planet carrier is fixed on the one-way clutch; the planet gear is rotatably arranged on the planet carrier and is respectively meshed with the sun gear and the gear ring; the center of the first outer end cover is rotatably arranged on the central shaft, the first outer end cover is fixed on one side of the hub, and the gear ring is fixed on the first outer end cover; the center of the second outer end cover is rotatably arranged on the central shaft, and the second outer end cover is fixed on the other side of the hub; the centrifugal clutch is connected with the second outer end cover and the rotor respectively. The hub is variable in speed through the planetary gear, large in output torque and not easy to burn out.
Description
Technical Field
The utility model relates to an electric motor car wheel hub, especially a bilateral drive shift wheel hub.
Background
The motor that current electric bicycle adopted mostly adjusts speed through the size of control current, and this kind of speed governing mode can output higher speed, but output torque is little, and the climbing is hard, meets heavy load and burns out easily.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a carry out a bilateral drive gear shifting wheel hub that variable speed, output torque are big, the motor is difficult for burning out through the gear, concrete technical scheme is:
a bilateral drive gear shifting hub comprises a hub, a central shaft and a motor comprising a stator and a rotor, wherein the stator is fixed on the central shaft, and the rotor and the hub are arranged coaxially with the central shaft; the sun gear is fixed on the rotor and is arranged coaxially with the central shaft; the gear ring is arranged coaxially with the sun gear; the one-way clutch is fixed on the central shaft; the planet carrier is fixed on the one-way clutch; the planet gear is rotatably arranged on the planet carrier and is respectively meshed with the sun gear and the gear ring; the center of the first outer end cover is rotatably arranged on the central shaft, the first outer end cover is fixed on one side of the hub, and the gear ring is fixed on the first outer end cover; the center of the second outer end cover is rotatably arranged on the central shaft, and the second outer end cover is fixed on the other side of the hub; and the centrifugal clutch is respectively connected with the second outer end cover and the rotor.
By adopting the technical scheme, the centrifugal clutch and the one-way clutch are alternately used, if the motor rotates forwards, namely the rotor rotates forwards, the one-way clutch is in a separation state at the moment, the centrifugal clutch is in a combination state, the centrifugal clutch enables the hub to rotate along with the rotor, the motor directly drives the hub to rotate, and the high-speed rotation can be kept; the motor is in a reverse rotation state when the gear is shifted, the one-way clutch is in a combined state at the moment, the centrifugal clutch is in the separating device, the rotor drives the hub to rotate through the planetary gear, the planet carrier is fixed, the sun gear drives the gear ring to rotate through the planetary gear, the gear ring drives the hub to rotate, the rotating direction of the hub is opposite to that of the rotor, namely, the rotating direction of the hub is unchanged, the rotor is decelerated through the planetary gear, the output torque is increased, and the motor is not easy to burn out. The direction of rotation of the motor may also be arranged to reverse to drive the hub to rotate. The gear shifting function is realized through the one-way clutch and the centrifugal clutch, the high-speed performance of the electric vehicle is not influenced, the gear shifting is realized when a large load or a climbing slope is guaranteed, the output of large torque is realized, and the normal use of the motor is guaranteed.
Two outer end covers realize wheel hub's sealed, all seal motor and driver part in wheel hub's inside, realize simultaneously that wheel hub's pressure all transmits the center pin through two end covers on, reduce the atress of other parts, keep driven reliable and stable.
Further, the centrifugal clutch comprises a friction ring, and the friction ring is connected with the rotor; the retainer is provided with a plurality of pockets in an annular array; the driving rollers are movably arranged in the pockets respectively; one end of the centrifugal shaft is connected with the second outer end cover, and the other end of the centrifugal shaft is provided with a regular prism; the clutch ring is fixed on the retainer, the centrifugal surfaces are positioned on one side of the pocket, and the combination grooves are positioned at the pocket; the centrifugal shaft, the retainer, the friction ring and the clutch ring are all arranged coaxially with the central shaft, and the retainer is positioned between the friction ring and the centrifugal shaft; when the centrifugal surface is in contact with the side surface of the regular prism, the driving roller is in a free state, and the centrifugal shaft does not rotate along with the friction ring; when the side edges of the regular prisms are positioned in the combination grooves, the driving rollers are respectively contacted with the side surfaces of the regular prisms and the inner circular surface of the friction ring, and the centrifugal shaft rotates along with the friction ring; and the clutch driving device is arranged on the friction ring and is used for judging whether the friction ring drives the retainer to rotate or not.
By adopting the technical scheme, when the centrifugal surface is in contact with the side surface of the regular prism, the pocket and the driving roller are both positioned at the center of the side surface of the regular prism, the distance between the side surface of the regular prism and the inner circular surface of the friction ring is the largest at the moment, the driving roller is in a free state, namely the diameter of the driving roller is smaller than the distance, the driving roller is only in contact with one of the side surface of the regular prism or the inner circular surface of the friction ring, the friction wheel cannot drive the retainer and the centrifugal shaft to rotate, and the centrifugal clutch is in a separation state.
When the side edges of the regular prisms are positioned in the combination groove, the distance between the side surfaces of the regular prisms and the inner circular surface of the friction ring is smaller and smaller than the diameter of the driving roller, the side surfaces of the regular prisms press the driving roller onto the inner circular surface of the friction ring, namely the driving roller is connected with the centrifugal shaft, at the moment, the friction ring can drive the retainer, the clutch ring, the driving rotor and the centrifugal shaft to rotate simultaneously, and the centrifugal clutch is in a combination state.
When the friction ring rotates forwards, the friction ring drives the retainer to rotate through the clutch driving device, and the retainer drives the clutch ring and the driving roller to rotate, so that the centrifugal clutch is in a combined state; when the friction ring rotates reversely, the clutch driving device does not drive the retainer to rotate, so that the centrifugal clutch is in a separated state.
The transmission of the driving roller ensures that the transmission of the centrifugal clutch is stable and reliable. The drive roller is a cylinder.
Further, the clutch driving device comprises a driving rod or a driving steel ball, and the driving rod or the driving steel ball is slidably mounted in a driving hole in the friction ring; the driving spring is arranged in the driving hole and positioned between the driving hole and the driving rod or the driving steel ball, and the driving spring is used for pressing the driving rod or the driving steel ball on the outer circular surface of the retainer; and a driving groove is formed in the outer circular surface of the retainer and is used for driving the driving rod or the driving steel ball to drive the retainer to rotate when the friction ring rotates clockwise or anticlockwise.
By adopting the technical scheme, the driving rod or the driving steel ball can drive the retainer to rotate along with the friction ring when the friction ring rotates forwards, so that the centrifugal clutch is in a combined state, the driving rod or the driving steel ball can retract into the driving hole when the friction ring rotates backwards, the retainer does not rotate along with the friction ring, and the centrifugal clutch is in a separated state.
The motor is characterized by further comprising a first motor end cover, wherein the first motor end cover is fixed at one end of the rotor, and the sun gear is fixed on the first motor end cover; and the second motor end cover is fixed at the other end of the rotor and is connected with the centrifugal clutch.
By adopting the technical scheme, the two motor end covers realize the sealing of the motor, the stator and the coil are sealed in the motor end covers, and the positioning of the rotor is realized simultaneously, so that the rotor rotates around the axis of the central shaft.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a pair of bilateral drive shift wheel hub carries out the variable speed through the gear, output torque is big, the motor is difficult for burning out.
Drawings
FIG. 1 is a schematic view of a double-side drive shift hub;
FIG. 2 is a cross-sectional view of a double-side drive shift hub;
FIG. 3 is a schematic structural diagram of the motor after the first motor end cover and the second motor end cover are hidden;
FIG. 4 is a schematic structural view of the planetary gear;
FIG. 5 is a side view of the centrifugal clutch;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a cross-sectional view taken along line C-C of FIG. 5;
FIG. 8 is a front view of the centrifugal clutch;
FIG. 9 is an enlarged view of a portion of FIG. 8 at I, in a separated state;
FIG. 10 is an enlarged view of a portion of FIG. 8 at I, in the engaged state;
FIG. 11 is an exploded view of the centrifugal clutch;
FIG. 12 is a schematic view of the construction of the centrifuge shaft;
FIG. 13 is a schematic structural view of the clutch ring;
fig. 14 is a structural schematic view of the cage.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 to 14, a bilateral driving gear shifting hub includes a hub 31, a central shaft 2, and a motor including a stator 11 and a rotor 12, wherein the stator 11 is fixed on the central shaft 2, and the rotor 12 and the hub 31 are both arranged coaxially with the central shaft 2; the sun gear 42 is fixed on the rotor 12 and is arranged coaxially with the central shaft 2; the gear ring 41, the gear ring 41 and the sun gear 42 are arranged coaxially; a one-way clutch 46, the one-way clutch 46 being fixed to the center shaft 2; a carrier 43, the carrier 43 being fixed to a one-way clutch 46; planet gears 44, the planet teeth 44 are rotatably mounted on the planet carrier 43 and are respectively meshed with the sun gear 42 and the ring gear 41; a first outer end cover 33, the center of the first outer end cover 33 is rotatably installed on the central shaft 2, the first outer end cover 33 is fixed on one side of the wheel hub 31, and the gear ring 41 is fixed on the first outer end cover 33; a second outer cover 32, the center of the second outer cover 32 is rotatably installed on the central shaft 2, and the second outer cover 32 is fixed on the other side of the hub 31; a centrifugal clutch is connected to the second outer cover 32 and the rotor 12, respectively.
The centrifugal clutch and the one-way clutch 46 are alternately used, if the motor rotates forwards, namely the rotor 12 rotates forwards, the one-way clutch 46 is in a separation state at the moment, the centrifugal clutch is in a combination state, the centrifugal clutch enables the hub 31 to rotate along with the rotor 12, the motor directly drives the hub 31 to rotate, and high-speed rotation can be kept; when the gear is shifted, the motor rotates reversely, the one-way clutch 46 is in a combined state, the centrifugal clutch is in a separating device, the rotor 12 drives the hub 31 to rotate through the planetary gear, the planet carrier 43 is fixed, the sun gear 42 drives the gear ring 41 to rotate through the planetary gear 44, the gear ring 41 drives the hub 31 to rotate, the rotating direction of the hub 31 is opposite to that of the rotor 12, namely the rotating direction of the hub 31 is unchanged, the rotor 12 is decelerated through the planetary gear, the output torque is increased, and the motor is not prone to being burnt out. The direction of rotation of the motor may be such that the hub 31 is driven to rotate in reverse. The gear shifting function is realized through the one-way clutch 46 and the centrifugal clutch, the high-speed performance of the electric vehicle is not influenced, the gear shifting is realized during heavy load or climbing, the output of large torque is realized, and the normal use of the motor is ensured.
Two outer end covers realize wheel hub 31's sealed, all seal motor and driver part in wheel hub 31's inside, realize simultaneously that wheel hub 31's pressure all transmits central axis 2 through two end covers on, reduce the atress of other parts, keep driven reliable and stable.
Specifically, a bearing is arranged between the sun gear 42 and the central shaft 2, and keys are arranged between the stator 11 and the central shaft 2 and between the one-way clutch 46 and the central shaft 2, so that the stator 11 and the one-way clutch 46 do not rotate relative to the central shaft 2.
Bearings and sealing rings are arranged between the first outer end cover 33 and the second outer end cover 32 and the central shaft 2.
The planet gears 44 are fixed to the carrier 43 by a connecting shaft 45. The carrier 43 is a ring.
As shown in fig. 5 to 14, the centrifugal clutch includes a friction ring 5, and the friction ring 5 is connected to a rotor 12; the retainer 7 is provided with a plurality of pockets 71 in an annular array on the retainer 7; the driving rollers 91, the driving rollers 91 are movably installed in the pockets 71 respectively; one end of the centrifugal shaft 6 is connected with the second outer end cover 32, and the other end of the centrifugal shaft 6 is provided with a regular prism; the clutch ring 8 is provided with a centrifugal surface 81 and combination grooves 82 in an annular array on the inner circular surface of the clutch ring 8, the combination grooves 82 are positioned on one side of the centrifugal surface 81, the clutch ring 8 is fixed on the retainer 7, the centrifugal surfaces 81 are positioned on one side of the pockets 71, and the combination grooves 82 are positioned at the pockets 71; the centrifugal shaft 6, the retainer 7, the friction ring 5 and the clutch ring 8 are all arranged coaxially with the central shaft 2, and the retainer 7 is positioned between the friction ring 5 and the centrifugal shaft 6; when the centrifugal surface 81 is in contact with the side surface 61 of the regular prism, the driving roller 91 is in a free state, and the centrifugal shaft 6 does not rotate along with the friction ring 5; when the side edge 62 of the regular prism is positioned in the combination groove 82, the driving roller 91 is respectively contacted with the side surface 61 of the regular prism and the inner circular surface of the friction ring 5, and the centrifugal shaft 6 rotates along with the friction ring 5; and the clutch driving device is arranged on the friction ring 5 and is used for judging whether the friction ring 5 drives the retainer 7 to rotate or not.
As shown in fig. 9, when the centrifugal surface 81 contacts the side surface 61 of the regular prism, the pocket 71 and the driving roller 91 are both located at the center of the side surface 61 of the regular prism, the distance between the side surface 61 of the regular prism and the inner circular surface of the friction ring 5 is the largest, the driving roller 91 is in a free state, that is, the diameter of the driving roller 91 is smaller than the distance, the driving roller 91 contacts only one of the side surface 61 of the regular prism or the inner circular surface of the friction ring 5, the friction wheel does not drive the holder 7 and the centrifugal shaft 6 to rotate, and the centrifugal clutch is in a disengaged state.
As shown in fig. 10, when the side edge 62 of the regular prism is located in the coupling groove 82, the distance between the side surface 61 of the regular prism and the inner circular surface of the friction ring 5 is smaller and smaller than the diameter of the driving roller 91, and the side surface 61 of the regular prism presses the driving roller 91 against the inner circular surface of the friction ring 5, i.e. the driving roller 91 realizes the connection between the friction ring 5 and the centrifugal shaft 6, and at this time, the friction ring 5 can drive the holder 7, the clutch ring 8, the driving rotor 12 and the centrifugal shaft 6 to rotate simultaneously, and the centrifugal clutch is in a coupled state.
When the friction ring 5 rotates along with the rotor 12, the friction ring 5 drives the retainer 7 to rotate through the clutch driving device, and the retainer 7 drives the clutch ring 8 and the driving roller 91 to rotate, so that the centrifugal clutch is in a combined state; when the friction ring 5 rotates reversely along with the rotor 12, the clutch driving device does not drive the retainer 7 to rotate, and the centrifugal clutch is in a separation state.
The drive roller 91 drives to enable the centrifugal clutch to drive stably and reliably. The drive roller 91 is a cylindrical body.
As shown in fig. 7, the clutch driving device includes a driving rod 92 or a driving steel ball, and the driving rod 92 or the driving steel ball is slidably mounted in the driving hole 51 of the friction ring 5; the driving spring is arranged in the driving hole 51 and is positioned between the driving hole 51 and the driving rod 92 or the driving steel ball, and the driving spring is used for pressing the driving rod 92 or the driving steel ball on the outer circular surface of the retainer 7; the outer circular surface of the retainer 7 is provided with a driving groove 72, and the driving groove 72 is used for driving the driving rod 92 or the driving steel ball to drive the retainer 7 to rotate when the friction ring 5 rotates clockwise or counterclockwise.
The end of the drive hole 51 may receive a set screw that presses the drive spring against the drive rod 92 or drive ball. One side of the drive slot 72 may be provided with a slide-in ramp to allow the drive rod 92 or ball to smoothly enter the drive slot 72.
When the friction ring 5 rotates forwards, the driving rod 92 or the driving steel ball is inserted into the driving groove 72 and can drive the retainer 7 to rotate along with the friction ring 5, so that the centrifugal clutch is in a combined state, when the friction ring 5 rotates backwards, the driving rod 92 or the driving steel ball is pushed into the driving hole 51 by the retainer 7, and the retainer 7 does not rotate along with the friction ring 5, so that the centrifugal clutch is in a separated state.
The motor rotor also comprises a first motor end cover 13, wherein the first motor end cover 13 is fixed at one end of the rotor 12, and the sun gear 42 is fixed on the first motor end cover 13; and a second motor end cover 14, wherein the second motor end cover 14 is fixed at the other end of the rotor 12, and the second motor end cover 14 is connected with the centrifugal clutch.
The two motor end covers realize the sealing of the motor, the stator 11 and the coil are sealed in the motor end covers, and the positioning of the rotor 12 is realized at the same time, so that the rotor 12 rotates around the axis of the central shaft 2.
A bearing is arranged between the centrifugal shaft 6 and the central shaft 2.
In the high gear, the one-way clutch 46 is in a disengaged state, and the centrifugal clutch is in an engaged state, so that the centrifugal clutch enables the hub 31 to rotate along with the rotor 12, and the motor directly drives the hub 31 to rotate.
In the low gear, the rotation direction of the motor is opposite to that of the high gear, the one-way clutch 46 is in a combined state, the centrifugal clutch is in a separating device, the rotor 12 drives the hub 31 to rotate through the planetary gear, and the rotor 12 is decelerated through the planetary gear, so that the output torque is increased.
The utility model provides a pair of bilateral drive shift wheel hub carries out the variable speed through the gear, output torque is big, the motor is difficult for burning out.
Claims (4)
1. A bilateral drive gear shifting hub comprises a hub, a central shaft and a motor comprising a stator and a rotor, wherein the stator is fixed on the central shaft, and the rotor and the hub are arranged coaxially with the central shaft;
it is characterized by also comprising
The sun gear is fixed on the rotor and is arranged coaxially with the central shaft;
the gear ring is arranged coaxially with the sun gear;
the one-way clutch is fixed on the central shaft;
the planet carrier is fixed on the one-way clutch;
the planet gear is rotatably arranged on the planet carrier and is respectively meshed with the sun gear and the gear ring;
the center of the first outer end cover is rotatably arranged on the central shaft, the first outer end cover is fixed on one side of the hub, and the gear ring is fixed on the first outer end cover;
the center of the second outer end cover is rotatably arranged on the central shaft, and the second outer end cover is fixed on the other side of the hub;
and the centrifugal clutch is respectively connected with the second outer end cover and the rotor.
2. A double-sided drive shift hub as defined in claim 1,
the centrifugal clutch comprises
The friction ring is connected with the rotor;
the retainer is provided with a plurality of pockets in an annular array;
the driving rollers are movably arranged in the pockets respectively;
one end of the centrifugal shaft is connected with the second outer end cover, and the other end of the centrifugal shaft is provided with a regular prism;
the clutch ring is fixed on the retainer, the centrifugal surfaces are positioned on one side of the pocket, and the combination grooves are positioned at the pocket;
the centrifugal shaft, the retainer, the friction ring and the clutch ring are all arranged coaxially with the central shaft, and the retainer is positioned between the friction ring and the centrifugal shaft;
when the centrifugal surface is in contact with the side surface of the regular prism, the driving roller is in a free state, and the centrifugal shaft does not rotate along with the friction ring;
when the side edges of the regular prisms are positioned in the combination grooves, the driving rollers are respectively contacted with the side surfaces of the regular prisms and the inner circular surface of the friction ring, and the centrifugal shaft rotates along with the friction ring;
and the clutch driving device is arranged on the friction ring and is used for judging whether the friction ring drives the retainer to rotate or not.
3. A double-sided drive shift hub as defined in claim 2,
the clutch driving device comprises
The driving rod or the driving steel ball is slidably arranged in the driving hole on the friction ring;
the driving spring is arranged in the driving hole and positioned between the driving hole and the driving rod or the driving steel ball, and the driving spring is used for pressing the driving rod or the driving steel ball on the outer circular surface of the retainer;
and a driving groove is formed in the outer circular surface of the retainer and is used for driving the driving rod or the driving steel ball to drive the retainer to rotate when the friction ring rotates clockwise or anticlockwise.
4. A double-sided drive shift hub as defined in claim 1, further comprising
The first motor end cover is fixed at one end of the rotor, and the sun gear is fixed on the first motor end cover;
and the second motor end cover is fixed at the other end of the rotor and is connected with the centrifugal clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020141384.XU CN211127453U (en) | 2020-01-21 | 2020-01-21 | Bilateral drive gear shifting hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020141384.XU CN211127453U (en) | 2020-01-21 | 2020-01-21 | Bilateral drive gear shifting hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211127453U true CN211127453U (en) | 2020-07-28 |
Family
ID=71705637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020141384.XU Expired - Fee Related CN211127453U (en) | 2020-01-21 | 2020-01-21 | Bilateral drive gear shifting hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211127453U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115627544A (en) * | 2022-11-13 | 2023-01-20 | 奎屯银力棉油机械有限公司 | Static suspension type foreign fiber cleaning machine for seed cotton |
| WO2023108915A1 (en) * | 2021-12-16 | 2023-06-22 | 广东威灵电机制造有限公司 | Hub motor and electric vehicle |
-
2020
- 2020-01-21 CN CN202020141384.XU patent/CN211127453U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023108915A1 (en) * | 2021-12-16 | 2023-06-22 | 广东威灵电机制造有限公司 | Hub motor and electric vehicle |
| CN115627544A (en) * | 2022-11-13 | 2023-01-20 | 奎屯银力棉油机械有限公司 | Static suspension type foreign fiber cleaning machine for seed cotton |
| CN115627544B (en) * | 2022-11-13 | 2023-07-21 | 奎屯银力棉油机械有限公司 | Seed cotton electrostatic suspension type foreign fiber cleaning machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 Termination date: 20220121 |