CN217496450U - Wheel hub motor speed changer based on centrifugal clutch - Google Patents
Wheel hub motor speed changer based on centrifugal clutch Download PDFInfo
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- CN217496450U CN217496450U CN202221095802.1U CN202221095802U CN217496450U CN 217496450 U CN217496450 U CN 217496450U CN 202221095802 U CN202221095802 U CN 202221095802U CN 217496450 U CN217496450 U CN 217496450U
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- centrifugal clutch
- fixed shaft
- end cover
- wheel
- hub
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Abstract
The utility model discloses a wheel hub motor transmission based on centrifugal clutch, which comprises a wheel hub, wherein one end of the wheel hub is coaxially connected with an end cover; an annular transmission part is coaxially connected in the end cover; the fixing shaft and the hub are coaxial; the machine core rotor is rotationally matched with the fixed shaft through a rotor bearing; the planetary gear train a is composed of a sun gear a, a planet carrier a, a planet gear a and an inner gear ring a; the planet carrier is fixed on the fixed shaft, and the inner gear ring a is in transmission connection with the annular transmission member through the ratchet wheel clutch unit; the cylindrical sun gear a is movably sleeved outside the fixed shaft and is fixedly connected with the machine core rotor; the utility model discloses get into automatic gearshift behind the high-speed state, ride passerby and can improve the experience of riding in the most comfortable conversion of stepping on realization speed and moment of torsion frequently.
Description
Technical Field
The utility model belongs to the in-wheel motor field.
Background
The bicycle adopts a motor and pedal dual-driving mode, thereby having good labor-saving and boosting effects; however, on the basis of the supplementary power driven by the motor, when the bicycle is ridden at a high speed, the pedal of the rider cannot exert force because the rotating speed of the hub is too high, and the pedal part cannot further accelerate the bicycle.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a wheel hub motor derailleur based on centrifugal separation and reunion can provide the automatic speed change of pedal end.
The technical scheme is as follows: in order to achieve the purpose, the utility model discloses a wheel hub motor transmission based on centrifugal clutch, including wheel hub, one end of wheel hub is with axle center connection end cover;
an annular transmission piece is coaxially connected in the end cover; the hub is coaxially arranged with the wheel hub; the machine core rotor is rotationally matched with the fixed shaft through a rotor bearing;
the planetary gear train a is composed of a sun gear a, a planet carrier a, a planet gear a and an inner gear ring a; the planet carrier a is fixed on the fixed shaft, and the annular gear a is in transmission connection with the annular transmission member through a ratchet wheel clutch unit; the cylindrical sun gear a is movably sleeved outside the fixed shaft and is fixedly connected with the machine core rotor.
Furthermore, the machine core stator is fixed on the fixed shaft with the same axle center, and the machine core stator is matched with the machine core rotor.
The flywheel rotating device further comprises a rotating sleeve which is coaxial with the fixed shaft, and the rotating sleeve is coaxially and fixedly connected with a flywheel;
the planetary gear train b is composed of a sun gear b, a planet carrier b, a planet gear b and an inner gear ring b;
the sun gear of the b is coaxially fixed on the fixed shaft, and the planet carrier of the b is fixedly connected with the rotary sleeve; the inner part of the end cover is in clutch transmission with the inner gear ring b of the planetary gear train b through a centrifugal clutch; and the planet carrier b of the planetary gear train b is in transmission connection with the annular transmission piece through a ratchet wheel clutch unit.
Further, when the rotating speed of an end cover exceeds the engaging rotating speed of a centrifugal clutch, the b inner gear ring of the b planetary gear train and the end cover are synchronized through the centrifugal clutch.
Furthermore, a ratchet wheel is coaxially arranged on the annular transmission piece.
Further, a first pawl unit is fixedly connected to the a inner gear ring; a second pawl unit is fixedly connected to the planet carrier b; the first pawl unit and the second pawl unit are matched with the ratchet wheel.
Furthermore, the rotary sleeve, the first pawl unit and the second pawl unit are in running fit with the fixed shaft through bearings.
Furthermore, the inner ring of the end cover is in running fit with the rotary sleeve through a bearing.
Furthermore, the end part of the fixed shaft is provided with locking threads, and the locking threads are locked on the base.
Further, the end cover is connected with the hub in a locking mode through a plurality of first locking bolts; the end cover is connected with the annular transmission piece through a plurality of second locking bolts in a locking mode; and the flange plate at one end of the sun wheel a is locked on the core rotor through a plurality of flange bolts.
Has the advantages that: the utility model adopts the double driving mode of the motor and the pedal, thereby playing the role of saving labor; after the bicycle is in a high-speed state, automatic gear shifting is performed, so that a rider can realize speed and torque conversion under the most comfortable pedaling frequency, and riding experience is improved.
Drawings
FIG. 1 is a cross-sectional view of the present device.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The centrifugal clutch-based hub motor transmission shown in the attached figure 1 comprises a hub 7, wherein one end of the hub 7 is coaxially connected with an end cover 3; the end cover 3 and the hub 7 of the embodiment are in locking connection through a plurality of first locking bolts 5;
an annular transmission piece 8 is coaxially connected in the end cover 3, and the specific connection mode is that the end cover 3 and the annular transmission piece 8 are connected in a locking mode through a plurality of second locking bolts 6; the fixing device further comprises a fixing shaft 21, the end part of the fixing shaft 21 of the embodiment is provided with a locking thread 13, and the locking thread 13 is locked on the base 12, so that the fixing of the fixing shaft 21 is realized; and the inner ring of the end cover 3 is in running fit with the rotary sleeve 25 through a bearing;
the fixed shaft 21 and the hub 7 have the same axle center; the machine core rotor 11 is in running fit with the fixed shaft 21 through a rotor bearing 15; the machine core stator 14 is coaxially fixed on the fixed shaft 21, the machine core stator 14 is matched with the machine core rotor 11, and the machine core rotor 11 is driven to rotate when the machine core stator 14 is electrified;
the planetary gear train a is composed of a sun gear 17, a planet carrier 18, a planet gear 10 and an a inner gear ring 9; (note: since the "planetary gear train" configuration is well known to those skilled in the art, the transmission relationships between the components within the "planetary gear train" are also well known to those skilled in the art, and the specific configuration will not be described in detail); the planet carrier 18 a is fixed on the fixed shaft 21, and the ring gear 9 a is in transmission connection with the annular transmission element 8 through a ratchet clutch unit; the cylindrical a sun gear 17 is movably sleeved outside the fixed shaft 21 and is fixedly connected with the core rotor 11, and the specific connection mode is that a flange 99 at one end of the a sun gear 17 is locked on the core rotor 11 through a plurality of flange bolts 16, so that the synchronization of the a sun gear 17 and the core rotor 11 is realized;
the bicycle is characterized by also comprising a rotary sleeve 25 which is coaxial with the outside of the fixed shaft 21, wherein the rotary sleeve 25 is fixedly connected with a flywheel 1 (also called a chain wheel for inputting pedal power) coaxially;
the planetary gear train b is composed of a sun gear 24, a planet carrier 23, a planet gear 22 and an inner gear ring b; b, the sun gear 24 is coaxially fixed on the fixed shaft 21 (the sun gear and the fixed shaft can also be directly manufactured into an integral structure in advance), and the planet carrier 23 is fixedly connected with the rotary sleeve 25 (the planet carrier and the rotary sleeve can also be directly manufactured into an integral structure in advance); the inside of the end cover 3 is in coaxial clutch transmission with the b inner gear ring of the b planetary gear train through a centrifugal clutch 4, and the b planetary carrier 23 of the b planetary gear train is in transmission connection with the annular transmission member 8 through a ratchet clutch unit; when the rotating speed of the end cover 3 exceeds the engaging rotating speed of the centrifugal clutch 4, the b inner gear ring of the b planetary gear train is synchronized with the end cover 3 through the centrifugal clutch 4.
The specific structure of the ratchet clutch unit is as follows: the annular transmission piece 8 is coaxially provided with a ratchet wheel 2; a first pawl unit 19 is fixedly connected to the inner gear ring 9; b, a second pawl unit 20 is fixedly connected to the planet carrier 23; the first pawl unit 19 and the second pawl unit 20 are both matched with the ratchet wheel 2; the rotary sleeve 25, the first pawl unit 19 and the second pawl unit 20 are rotatably engaged with the fixed shaft 21 through bearings.
The working principle is as follows:
when the electric bicycle runs at a low speed:
the rotating speed of the end cover 3 and the hub 7 does not exceed the engaging rotating speed of the centrifugal clutch 4, and the centrifugal clutch 4 is in a disengaged state, so that the end cover 3 and the b inner gear ring of the b planetary gear train are in a separated state; the torque generated by the working of the pedal by the rider is transmitted to the planet carrier 23 b through the rotary sleeve 25; b the planet carrier 23 transmits the torque to the ratchet wheel 2 on the annular transmission piece 8 through the second pawl unit 20, so as to finally drive the hub 7 to rotate; meanwhile, the movement stator 14 drives the movement rotor 11 when being electrified, the torque of the movement rotor 11 is transmitted to the first pawl unit 19 through the transmission of the planetary gear train a, and then the first pawl unit 19 transmits the torque from the movement rotor 11 to the ratchet wheel 2 on the annular transmission piece 8, so that the hub 7 is finally driven to rotate, and the rotary power of the hub 7 is provided by the movement rotor 11 and a rider applying work on a pedal together;
when the bicycle runs at high speed:
the rotation speed of the end cover 3 and the hub 7 exceeds the joint rotation speed of the centrifugal clutch 4, the torque of the machine core rotor 11 is transmitted to the first pawl unit 19 through the transmission of the planetary gear train a, and then the first pawl unit 19 transmits the torque from the machine core rotor 11 to the ratchet wheel 2 on the annular transmission piece 8, so that the hub 7 is finally driven to rotate; meanwhile, the rotating speeds of the end cover 3 and the hub 7 exceed the joint rotating speed of the centrifugal clutch 4, and the centrifugal clutch 4 is in a joint state, so that the end cover 3 is synchronous with the b inner gear ring of the b planetary gear train under the joint of the centrifugal clutch 4, the rotating speed of the b inner gear ring of the b planetary gear train is larger than the rotating speed of the b planet carrier 23 according to the transmission relation of the planetary gear train, further the rotating speeds of the end cover 3, the annular transmission member 8 and the ratchet wheel 2 are higher than that of the second pawl unit 20, torque is not transmitted between the ratchet wheel 2 and the second pawl unit 20, and the gear shifting and speed increasing effects are achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (10)
1. A hub motor transmission based on centrifugal clutch comprises a hub (7), wherein one end of the hub (7) is coaxially connected with an end cover (3);
the method is characterized in that: an annular transmission piece (8) is coaxially connected in the end cover (3); the wheel hub further comprises a fixed shaft (21), and the fixed shaft (21) and the wheel hub (7) are coaxial; the mechanical movement device also comprises a mechanical movement rotor (11), wherein the mechanical movement rotor (11) is in running fit with the fixed shaft (21) through a rotor bearing (15);
the planetary gear train a is composed of a sun gear (17), a planet carrier (18), a planet gear (10) and an a inner gear ring (9); the planet carrier (18) a is fixed on a fixed shaft (21), and the ring gear (9 a) is in transmission connection with the annular transmission piece (8) through a ratchet wheel clutch unit; the cylindrical sun gear (17) is movably sleeved outside the fixed shaft (21) and is fixedly connected with the movement rotor (11).
2. The in-wheel motor transmission based on centrifugal clutch according to claim 1, characterized in that: the machine core is characterized by further comprising a machine core stator (14), wherein the machine core stator (14) is coaxially fixed on the fixed shaft (21), and the machine core stator (14) is matched with the machine core rotor (11).
3. The in-wheel motor transmission based on centrifugal clutch according to claim 2, characterized in that: the flywheel comprises a fixed shaft (21) and a rotating sleeve (25) which is coaxial with the fixed shaft, wherein the rotating sleeve (25) is fixedly connected with a flywheel (1) coaxially;
the planetary gear train b is composed of a sun gear (24), a planet carrier (23), a planet gear (22) and an inner gear ring;
the sun gear (24) of the b is coaxially fixed on the fixed shaft (21), and the planet carrier (23) of the b is fixedly connected with the rotary sleeve (25); the inside of the end cover (3) is in clutch transmission with the b inner gear ring of the b planetary gear train through a centrifugal clutch (4); and a b planetary carrier (23) of the b planetary gear train is in transmission connection with the annular transmission member (8) through a ratchet wheel clutch unit.
4. The centrifugal clutch based in-wheel motor transmission as claimed in claim 3, wherein: when the rotating speed of the end cover (3) exceeds the engaging rotating speed of the centrifugal clutch (4), the b inner gear ring of the b planetary gear train is synchronized with the end cover (3) through the centrifugal clutch (4).
5. The in-wheel motor transmission based on centrifugal clutch according to claim 4, characterized in that: the annular transmission piece (8) is coaxially provided with a ratchet wheel (2).
6. The in-wheel motor transmission based on centrifugal clutch of claim 5, characterized in that: a first pawl unit (19) is fixedly connected to the a-ring gear (9); a second pawl unit (20) is fixedly connected to the planet carrier (23) of the second pawl; the first pawl unit (19) and the second pawl unit (20) are both matched with the ratchet wheel (2).
7. The in-wheel motor transmission based on centrifugal clutch according to claim 6, characterized in that: the rotary sleeve (25), the first pawl unit (19) and the second pawl unit (20) are in running fit with the fixed shaft (21) through bearings.
8. The in-wheel motor transmission based on centrifugal clutch of claim 7, characterized in that: and the inner ring of the end cover (3) is in running fit with the rotary sleeve (25) through a bearing.
9. The in-wheel motor transmission based on centrifugal clutch according to claim 8, characterized in that: the end part of the fixed shaft (21) is provided with a locking thread (13), and the locking thread (13) is locked on the base (12).
10. The centrifugal clutch based in-wheel motor transmission as claimed in claim 9, wherein: the end cover (3) is in locking connection with the hub (7) through a plurality of first locking bolts (5); the end cover (3) is connected with the annular transmission piece (8) in a locking mode through a plurality of second locking bolts (6); and a flange plate (99) at one end of the sun wheel (17) is locked on the movement rotor (11) through a plurality of flange bolts (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221095802.1U CN217496450U (en) | 2022-05-09 | 2022-05-09 | Wheel hub motor speed changer based on centrifugal clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221095802.1U CN217496450U (en) | 2022-05-09 | 2022-05-09 | Wheel hub motor speed changer based on centrifugal clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217496450U true CN217496450U (en) | 2022-09-27 |
Family
ID=83351844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221095802.1U Active CN217496450U (en) | 2022-05-09 | 2022-05-09 | Wheel hub motor speed changer based on centrifugal clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217496450U (en) |
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2022
- 2022-05-09 CN CN202221095802.1U patent/CN217496450U/en active Active
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