CN216401666U

CN216401666U - Speed reduction module, power device, self-propelled vehicle, transfer equipment, power output system and electric bicycle

Info

Publication number: CN216401666U
Application number: CN202122404424.2U
Authority: CN
Inventors: 吴庆辉; 谢昆儒; 唐修晨; 陈士端
Original assignee: Mengying Technology Co ltd
Current assignee: Mengying Technology Co ltd
Priority date: 2020-10-06
Filing date: 2021-09-30
Publication date: 2022-04-29
Anticipated expiration: 2031-09-30

Abstract

The application provides a speed reduction module, a power device, a self-propelled vehicle, a transfer device, a power output system and an electric bicycle. The speed reduction module comprises a first bearing frame, a second bearing frame, two annular components, an auxiliary frame body and an outer annular component. The two ring-shaped members are eccentrically pivoted to the first carriage. When the first bearing frame is driven, the first bearing frame can rotate around a central shaft, the first bearing frame drives the two annular members to rotate relative to the outer annular member, and the fixing pins penetrating through the through holes of the two annular members are pushed, so that the second bearing frame is driven to rotate relative to the first bearing frame around the central shaft. The speed reduction module has the effect of small size.

Description

Speed reduction module, power device, self-propelled vehicle, transfer equipment, power output system and electric bicycle

Technical Field

The present disclosure relates to a speed reduction module, a power device including the speed reduction module, a self-propelled vehicle, a transfer apparatus, a power output system, and an electric bicycle, and more particularly, to a speed reduction module, a power device including the speed reduction module, a self-propelled vehicle, a transfer apparatus, a power output system, and an electric bicycle.

Background

The existing common power device which is applied to the electric bicycle and comprises a motor and a speed reducer has the problem of large volume, and the problem can directly influence the integral attractiveness of the electric bicycle.

SUMMERY OF THE UTILITY MODEL

The application discloses a speed reduction module, a power device, a self-propelled vehicle, a transfer device, a power output system and an electric bicycle, which are mainly used for solving the problem that the conventional power device (comprising a motor and a speed reducer) applied to the electric bicycle is large in size.

The application discloses speed reduction module, it contains: the first bearing frame is used for being connected with an external driving unit, and rotates by taking a central shaft as a center when the first bearing frame is driven by the external driving unit; the second bearing frame is pivoted with the periphery of the first bearing frame; a plurality of fixing pins arranged on one side of the second bearing frame; at least two annular members respectively defined as a first annular member and a second annular member; the first annular member is eccentrically disposed with respect to the central axis, and the second annular member is eccentrically disposed with respect to the central axis; the first ring member comprises a plurality of first external tooth-like structures and comprises a plurality of first through holes; the inner side of the first annular component is pivoted to the periphery of the first bearing frame, and a fixing pin correspondingly penetrates through each first through hole; each fixing pin is eccentrically arranged in the corresponding first through hole; the second annular member comprises a plurality of second external tooth-shaped structures, and the second annular member comprises a plurality of second through holes; the inner side of the second annular member is pivoted to the periphery of the first bearing frame, and a fixing pin correspondingly penetrates through each second through hole; each fixing pin is eccentrically arranged in the corresponding second through hole; wherein, each fixing pin passes through one of the first through holes and one of the second through holes; the auxiliary frame body is pivoted on the periphery of the first bearing frame; the inner side of the outer annular member is provided with a plurality of inner tooth-shaped structures, the periphery of the outer annular member and the auxiliary frame body are mutually fixed, the plurality of inner tooth-shaped structures are mutually meshed with the first outer tooth-shaped structure, and the plurality of inner tooth-shaped structures are mutually meshed with the second outer tooth-shaped structure; wherein a difference between the number of internal tooth structures included in the outer ring member and the number of first external tooth structures included in the first ring member is less than 5 teeth; the difference between the number of the internal tooth-shaped structures contained in the outer annular member and the number of the second external tooth-shaped structures contained in the second annular member is less than 5 teeth; when the driving unit is controlled to rotate the first bearing frame by taking the central shaft as the center, the first annular member and the second annular member are linked by the first bearing frame and rotate relative to the outer annular member, and the first annular member and the second annular member drive the fixing pins to act so as to rotate the second bearing frame relative to the first bearing frame.

Optionally, the deceleration module comprises at least three bearings respectively defined as a first bearing, a second bearing and a third bearing, wherein an outer ring structure of the first bearing is fixed to the inner side of the second bearing frame, an inner ring structure of the first bearing is fixed to the periphery of the first bearing frame, and an inner ring structure of the second bearing is fixed to the periphery of the first bearing frame; the outer ring structure of the second bearing is fixed with the inner side of the auxiliary frame body; the speed reducing module also comprises an end cover, the end cover is fixed at one end of the auxiliary frame body, an outer ring structure of the third bearing is fixed with the end cover and the auxiliary frame body, and an inner ring structure of the third bearing is fixed with the periphery of the second bearing frame; the first bearing frame, the second bearing frame, the first bearing, the auxiliary frame body, the second bearing, the third bearing and the end cover jointly form a closed space, and each fixing pin, the first annular member, the second annular member and the outer annular member are located in the closed space.

Optionally, the first annular member and the second annular member are identical members, and the first bearing frame has a body, a first annular protrusion structure and a second annular protrusion structure; the body is provided with a first hollow channel which penetrates through the body along the central shaft, the second bearing frame is provided with a second hollow channel which penetrates through the second bearing frame along the central shaft, and the first hollow channel and the second hollow channel are communicated with each other; the first annular protruding structure is formed on the periphery of the body, the second annular protruding structure is formed on the periphery of the body, the first annular member is pivoted on the periphery of the first annular protruding structure, the second annular member is pivoted on the periphery of the second annular protruding structure, and a first central shaft of a first central through hole of the first annular member, a second central shaft of a second central through hole of the second annular member and the central shafts are not overlapped with each other.

The application discloses a power device, it contains: the speed reducing module comprises a first bearing frame, a second bearing frame and a driving device, wherein the first bearing frame is used for being connected with an external driving unit and rotates around a central shaft when being driven by the external driving unit; the second bearing frame is pivoted with the periphery of the first bearing frame; a plurality of fixing pins arranged on one side of the second bearing frame; at least two annular members respectively defined as a first annular member and a second annular member; the first annular member is eccentrically disposed with respect to the central axis, and the second annular member is eccentrically disposed with respect to the central axis; the first ring member comprises a plurality of first external tooth-like structures and comprises a plurality of first through holes; the inner ring of the first annular component is pivoted on the periphery of the first bearing frame, and a fixing pin correspondingly penetrates through each first through hole; each fixing pin is eccentrically arranged in each first through hole; the second annular member comprises a plurality of second external tooth-shaped structures, and the second annular member comprises a plurality of second through holes; the inner ring of the second annular member is pivoted to the periphery of the first bearing frame, and a fixing pin correspondingly penetrates through each second through hole; each fixing pin is eccentrically arranged in each second through hole; wherein, each fixing pin passes through one of the first through holes and one of the second through holes; the auxiliary frame body is pivoted on the periphery of the first bearing frame; the inner side of the outer annular member is provided with a plurality of inner tooth-shaped structures, the periphery of the outer annular member and the auxiliary frame body are mutually fixed, the plurality of inner tooth-shaped structures are mutually meshed with the first outer tooth-shaped structure, and the plurality of inner tooth-shaped structures are mutually meshed with the second outer tooth-shaped structure; the end cover is fixed at one end of the auxiliary frame body and is pivoted with the periphery of the second bearing frame; wherein a difference between the number of internal tooth structures included in the outer ring member and the number of first external tooth structures included in the first ring member is less than 5 teeth; the difference between the number of the internal tooth-shaped structures contained in the outer annular member and the number of the second external tooth-shaped structures contained in the second annular member is less than 5 teeth; the driving unit is connected with the first bearing frame; the outer shell is of a hollow structure, and the speed reduction module and the driving unit are arranged in the outer shell; an outer end cap fixed to one end of the outer housing; when the driving unit is controlled to rotate the first bearing frame by taking the central shaft as the center, the first annular member and the second annular member are driven to rotate relative to the outer annular member, and the first annular member and the second annular member drive the fixing pins to act so as to rotate the second bearing frame relative to the first bearing frame.

Optionally, the first carrier has a first hollow channel, the first hollow channel penetrates the first carrier along the central axis, the second carrier has a second hollow channel, the second hollow channel penetrates the second carrier along the central axis, and the first hollow channel and the second hollow channel are communicated with each other; the power device further comprises a lead member, the lead member comprises a lead channel, the lead channel penetrates through the lead member along the central shaft, the lead member and the second bearing frame are fixed with each other, the lead member is not fixed with the first bearing frame, and the lead channel is used for providing at least one wire arrangement.

Optionally, the deceleration module includes at least four bearings respectively defined as a first bearing, a second bearing, a third bearing and an auxiliary bearing, wherein an outer ring structure of the first bearing is fixed to an inner side of the second bearing frame, an inner ring structure of the first bearing is fixed to an outer periphery of the first bearing frame, and an inner ring structure of the second bearing is fixed to an outer periphery of the first bearing frame; the outer ring structure of the second bearing is fixed with the inner side of the auxiliary frame body; the speed reducing module also comprises an end cover, the end cover is fixed at one end of the auxiliary frame body, an outer ring structure of the third bearing is fixed with the end cover and the auxiliary frame body, and an inner ring structure of the third bearing is fixed with the periphery of the second bearing frame; the first bearing frame, the second bearing frame, the first bearing, the auxiliary frame body, the second bearing, the third bearing and the end cover jointly form a closed space, and each fixing pin, each first annular member, each second annular member and each outer annular member are located in the closed space; the inner ring structure of the auxiliary bearing and the periphery of the first bearing frame are fixed with each other, and the outer ring structure of the auxiliary bearing and the outer end cover are fixed with each other; the driving unit is located in another closed space formed by the first bearing frame, the auxiliary bearing, the second bearing, the outer shell, the auxiliary frame body and the outer end cover.

Optionally, the driving unit is a motor, the motor includes a stator assembly and a rotor assembly, the stator assembly is fixed inside the outer housing, the rotor assembly and the periphery of the first bearing frame are fixed to each other, and when the driving unit is driven, the rotor assembly rotates relative to the stator assembly with the central shaft as the center.

Optionally, the power device further comprises at least one sensor for sensing at least one of torque, speed and position of the first carrier when rotating; one of the sensors is a rotary encoder, the rotary encoder comprises a reading unit and a magnetic ring, the reading unit is fixedly arranged on the outer end cover, and the magnetic ring is fixedly arranged on the periphery of the first bearing frame.

The application discloses from walking car, it contains the power device of this application, two at least wheels and a processing module, and one of them wheel bears the frame with the second and is connected, processing module electric connection drive unit, and processing module can control drive unit and actuate to bear the wheel rotation that the frame is connected with the second through speed reduction module drive.

The application discloses move equipment of carrying, it contains at least one power device, at least one connecting element and at least one processing module of this application, and the second bears the frame and is connected with coupling assembling, and processing module electric connection drive unit, and processing module can control drive unit and actuate to bear the coupling assembling that the frame is connected with the second through speed reduction module drive and actuate.

The application discloses power take-off system, it is applicable to and installs a frame group at an electric bicycle, power take-off system includes: the power device of the application, the power take-off system also includes, a middle shaft; the two cranks are connected to two ends of the middle shaft, and the other end of each crank is used for connecting a pedal; a fluted disc; the first one-way clutch is connected with the middle shaft and the fluted disc; the second one-way clutch is connected with the second bearing frame and is connected with the first one-way clutch; the power device also comprises a first auxiliary end cover which is of an annular structure, the periphery of the first auxiliary end cover and the inner side of an outer through hole of the outer end cover are fixed with each other, and the inner side of the first auxiliary end cover and the periphery of the middle shaft are pivoted with each other; the second auxiliary end cover is fixed at one end of the outer shell and is mutually pivoted with the first one-way clutch; when a user steps on the two pedals to enable the electric bicycle to move forwards, the two cranks drive the middle shaft to rotate in a first direction, the middle shaft drives the first one-way clutch to act so as to drive the fluted disc to rotate in the first direction, and the fluted disc can drive a rear wheel of the electric bicycle to rotate through a transmission piece; when the two cranks are driven to rotate towards a second direction, the middle shaft rotates towards the second direction, the middle shaft drives the first one-way clutch to act, and the first one-way clutch does not drive the fluted disc to rotate; the second direction is opposite to the first direction; when the driving unit is controlled to operate, the driving unit drives the first bearing frame to rotate in the first direction, the first annular member and the second annular member are driven by the first bearing frame to rotate relative to the outer annular member, the first annular member and the second annular member drive the fixing pins to operate, the second bearing frame rotates relative to the first bearing frame, and the second bearing frame drives the second one-way clutch to operate, so that the first one-way clutch is driven to operate, and the fluted disc is driven to rotate in the first direction.

Optionally, the power output system further comprises a processing module and a torque sensor, the processing module is electrically connected to the torque sensor and the driving unit, and the torque sensor is used for sensing the torque of the middle shaft and correspondingly generating a torque signal; when the middle shaft is driven to rotate towards the first direction and the processing module judges that the torque of the middle shaft exceeds a preset torque according to the torque signal, the processing module controls the driving unit to act so that the second bearing frame drives the second one-way clutch to act, and the fluted disc is driven to rotate towards the first direction through the first one-way clutch.

Optionally, the first one-way clutch includes a first member, a first annular wall and a plurality of first rollers, the first member is an annular structure, the first member is fixed on the periphery of the middle shaft, the periphery of the first member has a plurality of first protruding structures and a plurality of first grooves, the plurality of first protruding structures and the plurality of first grooves are arranged at intervals, and each first groove is located between two adjacent first protruding structures; the first annular wall is formed on an auxiliary frame body, the auxiliary frame body is pivoted on the periphery of the middle shaft, the second one-way clutch is connected with the auxiliary frame body, and one end of the auxiliary frame body is connected with the fluted disc; each first groove is provided with two first cambered surfaces, and the radians of the two first cambered surfaces are different; when the middle shaft is driven to rotate towards the first direction, each first roller is positioned between one of the first cambered surfaces and the first annular wall, each first roller is fixedly held by the first member and the first annular wall, and the first annular wall rotates along with the middle shaft in the same direction and the first direction, so that the fluted disc is driven to rotate towards the first direction; when the middle shaft is driven to rotate towards the second direction, each first roller is driven to rotate between the other first cambered surface and the first annular wall, and the first annular wall cannot be linked by the middle shaft.

Optionally, the second one-way clutch includes a second member, a second annular wall and a plurality of second rollers, the second member is an annular structure, the second member is formed on one side of the second bearing frame, the periphery of the second member has a plurality of second protruding structures and a plurality of second grooves, the plurality of second protruding structures and the plurality of second grooves are arranged at intervals, and each second groove is located between two adjacent second protruding structures; the second annular wall is formed on the auxiliary frame body; each second groove is provided with two second cambered surfaces, and the radians of the two second cambered surfaces are different; when the driving unit is driven to drive the second bearing frame to rotate towards the first direction, each second roller is located between one of the second cambered surfaces and the second annular wall, each second roller is fixedly held by the second member and the second annular wall, and the second annular wall rotates along with the second bearing frame in the same direction as the first direction so as to drive the fluted disc to rotate towards the first direction.

The application discloses electric bicycle, it includes: the power output system, the frame set, the processing module and the electric power system are provided, wherein the frame set is provided with a frame, a handle, a front wheel, a rear wheel, a seat cushion, a braking system and a transmission piece; the power output system is arranged on the frame group; the processing module is electrically connected with the driving unit; the power system is electrically connected with the processing module and used for providing power required by the operation of the power output system.

Optionally, the power device further comprises a first auxiliary bearing, a second auxiliary bearing and a third auxiliary bearing, wherein an inner ring structure of the first auxiliary bearing is fixed to the periphery of the middle shaft, and an outer ring structure of the first auxiliary bearing is fixed to an inner side wall of an outer through hole formed by the outer end cover; the inner ring structure of the second auxiliary bearing is fixed with the periphery of the auxiliary frame body, and the outer ring structure of the second auxiliary bearing is fixed with the inner side of the second auxiliary end cover; the inner ring structure of the third auxiliary bearing is fixed with the periphery of the middle shaft, and the outer ring structure of the third auxiliary bearing is fixed with the inner side of the auxiliary frame body.

In summary, the speed reduction module in the speed reduction module, among the power device, the speed reduction module in the self-propelled vehicle, the speed reduction module in the transfer equipment, the speed reduction module in the power output system and the speed reduction module in the electric bicycle of the application are smaller than the volume of the speed reduction module in the traditional self-propelled vehicle, the speed reduction module in the traditional transfer equipment, the speed reduction module in the traditional power output system and the speed reduction module in the traditional electric bicycle.

For a better understanding of the nature and technical content of the present application, reference should be made to the following detailed description and accompanying drawings, which are provided to illustrate the present application and are not intended to limit the scope of the present application.

Drawings

Fig. 1 is a schematic diagram of a deceleration module of the present application.

Fig. 2 is a schematic cross-sectional view of fig. 1 along the sectional line II-II.

Fig. 3 is a partially enlarged schematic view of fig. 2.

Figure 4 is a schematic view of a first carrier of the speed reduction module of the present application.

Fig. 5 is a schematic cross-sectional view of fig. 4 along the sectional line V-V.

Fig. 6 is a schematic sectional view of fig. 4 along the sectional line VI-VI.

Fig. 7 is an exploded schematic view of the first carrier provided with a plurality of rollers, the first annular member, and the second annular member of the speed reduction module according to the present invention.

Fig. 8 and 9 are schematic partial cross-sectional views of a combination of a first carrier, a first ring member, and a second ring member of a speed reduction module according to the present application.

Fig. 10 is an exploded view of the first carrier provided with the first annular member and the second annular member, the first bearing, the second carrier, and a plurality of fixing pins of the speed reduction module according to the present invention.

Fig. 11 is an exploded view of the first carrier, the second bearing, the auxiliary frame body, and the outer ring member of the speed reduction module according to the present invention, in which the first ring member, the second ring member, and the second carrier are disposed.

Fig. 12 is a partially exploded view of the first carrier, the third bearing, and the end cap of the speed reduction module of the present application.

Fig. 13 is a schematic view of the self-propelled vehicle of the present application.

Fig. 14 is a partial schematic view of the self-propelled vehicle of the present application.

FIG. 15 is a schematic cross-sectional view taken along line XV-XV in FIG. 14.

Fig. 16 is an exploded schematic view of a power unit and wheels of the self-propelled vehicle according to the present invention.

Fig. 17 and 18 are partially exploded views of the self-propelled vehicle power device according to the present invention from different perspectives.

Fig. 19 is a schematic view of the transfer facility of the present application.

FIG. 20 is a schematic sectional view of FIG. 19 taken along line XX-XX.

Fig. 21 is a schematic view of the electric bicycle of the present application.

Fig. 22 is a schematic view of the power take-off system of the electric bicycle of the present application.

Fig. 23 is a cross-sectional view of fig. 22 taken along line XXIII-XXIII.

Fig. 24 is a partially enlarged schematic view of fig. 23.

Fig. 25 to 27 are partially exploded schematic views of different components of the power take-off system of the electric bicycle of the present application.

Fig. 28 is a partial cross-sectional schematic view of the power take-off system of the electric bicycle of the present application.

Fig. 29 is a cross-sectional view of fig. 22 taken along section line XXIX-XXIX.

Fig. 30 is a partially enlarged schematic view of fig. 29.

Fig. 31 is a partially enlarged schematic view of another state of the bottom bracket, the first member, the first annular wall, and the first roller of the power output system of the electric bicycle of the present application.

FIG. 32 is a schematic cross-sectional view of FIG. 22 taken along line XXXII-XXXII.

Fig. 33 is a partially enlarged schematic view of fig. 32.

Detailed Description

In the following description, reference is made to or shown in the accompanying drawings for the purpose of illustrating the general principles of the invention, and not for the purpose of limiting the same.

Referring to fig. 1 to 12, a speed reducing module a of the present application includes a first carrier 10, two ring members (respectively defined as a first ring member 11 and a second ring member 12), a second carrier 13, a first bearing 14, eight fixing pins 15 (shown in fig. 10), an auxiliary frame 16, a second bearing 17, an outer ring member 18, a third bearing 19, and an end cap 20.

As shown in fig. 2 to 6, two opposite ends of the first loading frame 10 are respectively defined as a first end 10A and a second end 10B. The first carriage 10 is connected to an external driving unit (e.g. a motor), and when the external driving unit drives the first carriage 10 to rotate, the first carriage 10 will rotate around a central axis CP.

The first bearing frame 10 has a body 101, a first annular protrusion 102, a second annular protrusion 103, two first annular position-limiting structures 104 and two second annular position-limiting structures 105. The body 101, the first annular protrusion 102, the second annular protrusion 103, the two first annular limiting structures 104 and the two second annular limiting structures 105 may be integrally formed. The body 101 may generally assume a cylindrical configuration. The body 101 may have a first hollow channel 1011, the first hollow channel 1011 extending through the body 101 along the central axis CP. In various embodiments, the body 101 may not have the first hollow channel 1011, and the first loading ledge 10 may have a solid structure.

The first annular protrusion 102 and the second annular protrusion 103 are formed on the periphery of the body 101, the first annular protrusion 102 is disposed adjacent to the first end 10A, the second annular protrusion 103 is disposed adjacent to the first annular protrusion 102, and the first annular protrusion 102 and the second annular protrusion 103 are disposed in a staggered manner.

The first annular protrusion 102 and the body 101 can jointly form a Cam (Cam), and the second annular protrusion 103 and the body 101 can jointly form another Cam (Cam), that is, the central axis CP does not pass through the center of the first annular protrusion 102, and the central axis CP does not pass through the center of the second annular protrusion 103. Specifically, as shown in fig. 4 to 6, a distance L1 between a partial section of the outer periphery of the first annular projection structure 102 and the central axis CP is different from a distance L2 between another partial section of the outer periphery of the first annular projection structure 102 and the central axis CP; similarly, the distance L3 from the central axis CP of a partial section of the outer periphery of the second annular projection structure 103 is different from the distance L4 from the central axis CP of the remaining section of the outer periphery of the second annular projection structure 103.

As shown in fig. 5, further, the periphery of the first annular projection structure 102 in a cross section (i.e. a plane parallel to the X-Z plane of the coordinates shown in fig. 5) may be a right circle, and the central axis CP does not pass through the center W1 of the right circle, i.e. the right circle is eccentrically (eccentricic) arranged with respect to the central axis CP; the normal direction of the cross section is parallel to the central axis CP.

As shown in fig. 6, the periphery of the second annular protrusion 103 in a cross section (i.e., a plane parallel to the X-Z plane of the coordinates shown in fig. 6) may be in the shape of a perfect circle, and the central axis CP does not pass through the center W2 of the perfect circle, i.e., the perfect circle is eccentrically disposed with respect to the central axis CP; the normal direction of the cross section is parallel to the central axis CP.

As shown in fig. 4 and 7, the two first annular limiting structures 104 are disposed on the periphery of the body 101, the first annular protruding structure 102 is located between the two first annular limiting structures 104, and the first annular protruding structure 102 and the two first annular limiting structures 104 form a first annular accommodating groove 106. The two second annular limiting structures 105 are disposed on the periphery of the body 101, the second annular protruding structure 103 is located between the two second annular limiting structures 105, and the second annular protruding structure 103 and the two second annular limiting structures 105 together form a second annular accommodating groove 107.

The first annular receiving groove 106 and the second annular receiving groove 107 may be respectively provided with a plurality of rollers P, and the first annular member 11 is pivotally connected to the periphery of the first carrier 10 through the plurality of rollers P arranged in the first annular receiving groove 106; the second ring member 12 is pivotally connected to the outer periphery of the first carrier 10 by a plurality of rollers P disposed in the second ring-shaped receiving slot 107. In different embodiments, the rollers P can be replaced by balls according to the requirement.

In another embodiment, the periphery of the first annular protrusion 102 may also be provided with a bearing (such as a ball bearing, a roller bearing, etc.), and the first annular member 11 is pivotally connected to the periphery of the first carrier 10 via the bearing; similarly, the periphery of the second annular protrusion 103 may be provided with a bearing, and the second annular member 12 is pivotally connected to the periphery of the first bearing frame 10 through the bearing.

As shown in fig. 2, 3, and 7 to 9, the first annular member 11 includes a first central through hole 111, the first central through hole 111 is disposed through the first annular member 11, and an inner side surface 112 of the first annular member 11 forming the first central through hole 111 contacts with the plurality of rollers P located in the first annular groove 106, and the first annular member 11 can rotate relative to the first carrier 10 through the plurality of rollers P.

The first ring member 11 has a plurality of first external teeth 113 on the periphery thereof, and the first ring member 11 further includes eight first through holes 114, each first through hole 114 is disposed through the first ring member 11, and the eight first through holes 114 are disposed around the first central through hole 111. The number of the first through holes 114 included in the first ring member 11 and the number of the first external tooth structures 113 included in the first ring member 11 are not limited to those shown in the drawings.

The second annular member 12 includes a second central through hole 121, the second central through hole 121 is disposed through the second annular member 12, and the inner side 122 of the second annular member 12 forming the second central through hole 121 contacts with the plurality of rollers P located in the second annular receiving groove 107, and the second annular member 12 can rotate relative to the first carrier 10 via the plurality of rollers P.

The second annular member 12 has a plurality of second external teeth 123 on the periphery thereof, and the second annular member 12 further includes eight second through holes 124, each second through hole 124 is disposed through the second annular member 12, and the eight second through holes 124 are disposed around the second central through hole 121. The number of the second through holes 124 included in the second annular member 12 and the number of the second external tooth-like structures 123 included in the second annular member 12 are not limited to those shown in the drawings. In a preferred embodiment, the first annular member 11 and the second annular member 12 can be identical members, which facilitates production and reduces production cost.

As shown in fig. 4 and 7 to 9, since the first annular protrusion 102 and the second annular protrusion 103 are disposed in a staggered manner, when the first annular member 11 and the second annular member 12 are pivotally connected to the first annular protrusion 102 and the second annular protrusion 103 respectively through the plurality of rollers P, the first annular member 11 and the second annular member 12 are disposed in a staggered manner on the outer periphery of the first carrier 10, and when the first annular member 11 and the second annular member 12 are pivotally connected to the first carrier 10, the first through holes 114 and the second through holes 124 adjacent to each other are not disposed in an overlapping manner, that is, the central axes CP1 of the first through holes 114 do not overlap the central axes CP2 of the second through holes 124 adjacent to each other.

As shown in fig. 9, when the first annular protrusion 102 and the second annular protrusion 103 are respectively pivoted to the first annular protrusion 102 and the second annular protrusion 103 of the first carrier 10, a first central axis CP3 of the first central through hole 111 of the first annular member 11 and a second central axis CP4 of the second central through hole 121 of the second annular member 12 will not overlap with the central axis CP, that is, the first annular member 11 is disposed eccentrically to the central axis CP of the first carrier 10, and the second annular member 12 is disposed eccentrically to the central axis CP of the first carrier 10.

As shown in fig. 2, 3 and 10, a bearing receiving groove 131 is formed in one side of the second carrier 13. The second carrier 13 includes eight fixing holes 132, the eight fixing holes 132 are disposed around the bearing receiving groove 131, and each fixing hole 132 may not be disposed through the second carrier 13. The inner side 1311 of the bearing pocket 131 is formed for mutual fixation with the outer ring structure 141 of the first bearing 14. The inner ring structure 142 of the first bearing 14 is configured to be fixed to an outer periphery 1081 of an annular pivot portion 108 of the body 101 adjacent to the first end 10A, and the second carrier 13 can be pivoted to the first carrier 10 through the first bearing 14. The first supporting frame 10 has an annular pivot portion 108, a first annular protrusion 102 and a second annular protrusion 103 sequentially from a first end 10A to a second end 10B.

As shown in fig. 2, 3 and 10, one fixing pin 15 is fixedly provided in each fixing hole 132 of the second carrier 13. Each of the fixing pins 15 may be a cylindrical structure. When the second carrier 13 is pivotally connected to the periphery of the first carrier 10 through the first bearing 14, each fixing pin 15 passes through a corresponding first through hole 114 and a corresponding second through hole 124, and each fixing pin 15 is eccentrically disposed in the corresponding first through hole 114 (i.e., the central axis of the fixing pin 15 does not overlap with the central axis of the first through hole 114), and each fixing pin 15 is eccentrically disposed in the corresponding second through hole 124 (i.e., the central axis of the fixing pin 15 does not overlap with the central axis of the second through hole 124).

In this embodiment, the second carrier 13 is pivotally connected to the periphery of the first carrier 10 through the first bearing 14, but the manner of pivotally connecting the second carrier 13 to the periphery of the first carrier 10 is not limited to the bearing, for example, in different embodiments, the ring-shaped pivot portion 108 of the first carrier 10 may be formed with a ring-shaped groove, and the ring-shaped groove is provided with a plurality of rollers, and the second carrier 13 may be pivotally connected to the periphery of the first carrier 10 through a plurality of rollers disposed in the ring-shaped groove.

The number of fixing holes 132 included in the second carrier 13, the number of first through holes 114 included in the first ring member 11, and the number of second through holes 124 included in the second ring member 12 correspond to each other. The number of the fixing holes 132 included in the second loading frame 13 can vary according to requirements, and is only an exemplary aspect.

As shown in fig. 2 and 10, the second loading frame 13 may further include a second hollow channel 133, the second hollow channel 133 may extend through the second loading frame 13 along the central axis CP, and when the second loading frame 13 is pivoted with the first loading frame 10, the second hollow channel 133 may be communicated with the first hollow channel 1011 of the first loading frame 10. In various embodiments, the second carrier 13 may also be provided without the second hollow channel 133, while the second carrier 13 is of a solid-like construction.

As shown in fig. 2, 3 and 11, a receiving groove 161 is formed in a side of the auxiliary frame body 16, an inner bearing receiving groove 1621 is formed in a side of an end wall 162 of the auxiliary frame body 16, an inner side surface 16211 of the inner bearing receiving groove 1621 is configured to be fixed to the outer ring structure 171 of the second bearing 17, an inner ring structure 172 of the second bearing 17 is configured to be fixed to the periphery of the main body 101 of the first carrier 10, and the auxiliary frame body 16 can be pivotally connected to the periphery of the first carrier 10 through the second bearing 17.

In this embodiment, the auxiliary frame 16 is pivotally connected to the periphery of the first frame 10 through the second bearing 17, but the manner of pivotally connecting the auxiliary frame 16 to the periphery of the first frame 10 is not limited to a bearing, for example, in different embodiments, the section of the first frame 10 for pivotally connecting to the auxiliary frame 16 may be formed with an annular groove, and a plurality of rollers may be disposed in the annular groove, and the auxiliary frame 16 may be pivotally connected to the periphery of the first frame 10 through a plurality of rollers.

As shown in fig. 2, 3 and 11, the outer ring member 18 is fixed to the inner surface 1611 of the auxiliary frame 16 forming the receiving slot 161. In practical applications, the auxiliary frame 16 and the outer annular member 18 may be manufactured separately and then fixed to each other by related fixing means (such as gluing, welding, locking, etc.), but not limited thereto, and in different embodiments, the auxiliary frame 16 and the outer annular member 18 may also be integrally formed.

The outer ring member 18 has a plurality of internal teeth 181. When the subframe 16 is pivotally connected to the outer periphery of the first carrier 10 through the second bearing 17, a portion of the plurality of inner tooth structures 181 of the outer ring member 18 will be engaged with a portion of the plurality of first outer tooth structures 113 of the first ring member 11, and a portion of the plurality of inner tooth structures 181 will be engaged with a portion of the plurality of second outer tooth structures 123 of the second ring member 12. Wherein the difference between the number of internal tooth structures 181 included in the outer ring member 18 and the number of first external tooth structures 113 included in the first ring member 11 is less than 5 teeth; the number of internal tooth-like structures 181 included in the outer annular member 18 differs from the number of second external tooth-like structures 123 included in the second annular member 12 by less than 5 teeth.

As shown in fig. 2, 3, 11 and 12, the auxiliary frame body 16 is formed with one side of the receiving groove 161, and is further formed with an outer bearing receiving groove 163 in an inward concave manner. A portion of the third bearing 19 is disposed in the outer bearing receiving slot 163, a portion of the outer ring structure 191 of the third bearing 19 is fixed to the inner side surface 1631 forming the outer bearing receiving slot 163, and the inner ring structure 192 of the third bearing 19 is fixed to the outer periphery 134 of the second carrier 13.

In a preferred embodiment, the second carrier 13 may further have a ring-shaped position-limiting portion 135, the ring-shaped position-limiting portion 135 may be disposed adjacent to one end of the second carrier 13, and when the inner ring structure 192 of the third bearing 19 is fixed on the outer periphery 134 of the second carrier 13, one side of the third bearing 19 may be correspondingly abutted against the ring-shaped position-limiting portion 135. Through the design of the annular limiting portion 135, when the related assembling personnel assemble the third bearing 19, the related assembling personnel can determine whether the third bearing 19 is already arranged at the correct position by sensing whether one side of the third bearing 19 abuts against the annular limiting portion 135.

As shown in fig. 2, 3, 11 and 12, the end cap 20 has a through hole 201, the through hole 201 penetrates through the end cap 20, and a bearing receiving groove 202 is formed in a concave side of the end cap 20. An end surface of the end cap 20 formed with the bearing receiving groove 202 and an end surface 164 of the auxiliary frame body 16 formed with the outer bearing receiving groove 163 are fixed to each other. Another part of the outer ring structure 191 of the third bearing 19 is fixed to the inner side 203 of the bearing pocket 202 forming the end cap 20, while the second carrier 13 is rotatable relative to the subframe body 16 and the end cap 20 via the third bearing 19. The third bearing 19 is mainly used to enable the second bearing frame 13 to be pivotally connected with the auxiliary frame body 16 and the end cover 20, and in practical applications, the third bearing 19 may be replaced by any component that can achieve the same function.

Referring to fig. 2 and 3, it is worth mentioning that a closed space SP is formed by the first bearing frame 10, the second bearing frame 13, the first bearing 14, the auxiliary frame 16, the second bearing 17, the third bearing 19 and the end cover 20, and the first annular member 11, the second annular member 12, the fixing pin 15 and the outer annular member 18 are correspondingly located in the closed space SP, so that dust, dirt and the like outside the speed reduction module a can be prevented from easily entering between the first outer tooth structure 113, the second outer tooth structure 123 and the inner tooth structure 181, or between the fixing pin 15 and the first through hole 114 and the second through hole 124, and the service lives of the first annular member 11, the second annular member 12, the fixing pin 15 and the outer annular member 18 can be further prolonged.

It should be noted that, in the drawings of the present embodiment, the first bearing 14, the second bearing 17 and the third bearing 19 are all ball bearings, but the first bearing 14, the second bearing 17 and the third bearing 19 are not limited to ball bearings, and the form thereof may be selected according to the requirement, for example, roller bearings may also be selected. In addition, in practical applications, an oil seal may be added around the second bearing 17 and the third bearing 19, so as to further prevent external dirt from entering the enclosed space SP.

In a specific application, the first carrier frame 10 of the speed reducing module a of the present embodiment is used to connect with an external driving unit (such as a motor), the second carrier frame 13 is used to connect with an external output member, and the power output by the external driving unit can be transmitted to the external output member through the speed reducing module a of the present application.

Specifically, when the first carrier 10 is driven to rotate, the first carrier 10 will rotate around the central axis CP, and the first annular protrusion 102 of the first carrier 10 and the plurality of rollers P disposed in the first annular groove 106 will drive the first annular member 11 to operate, so that a part of the plurality of first external teeth 113 of the first annular member 11 is continuously engaged with a part of the plurality of internal teeth 181 of the outer annular member 18, and the first annular member 11 will continuously rotate relative to the outer annular member 18; meanwhile, the second annular protrusion 103 of the first carrier 10 and the plurality of rollers P disposed in the second annular receiving groove 107 drive the second annular member 12 to move, so that a portion of the plurality of second outer tooth structures 123 of the second annular member 12 is continuously engaged with a portion of the plurality of inner tooth structures 181 of the outer annular member 18, and the second annular member 12 is continuously rotated relative to the outer annular member 18.

That is, when the first carrier 10 is driven to rotate, the first ring member 11 and the second ring member 12 are driven by the first carrier 10 to rotate relative to the outer ring member 18, and meanwhile, the fixing pins 15 penetrating through the adjacent first through holes 114 and the second through holes 124 are repeatedly pushed by the side wall forming the first through holes 114 and the side wall forming the second through holes 124, so as to drive the second carrier 13 to rotate relative to the auxiliary frame 16, the first carrier 10, and the end cover 20.

Since the number of the internal tooth structures 181 included in the outer ring member 18 is different from the number of the first external tooth structures 113 included in the first ring member, and the number of the internal tooth structures 181 included in the outer ring member 18 is different from the number of the second external tooth structures 123 included in the second ring member, the high-speed power input from the first carrier 10 is output from the second carrier 13 at a relatively low speed.

The speed reduction module a of the present application can have better dynamic characteristics and less vibration noise by designing such that the speed reduction module a rotates around the same central axis CP when the first carrier 10 and the second carrier 13 rotate.

Referring to fig. 13 to 18, the self-propelled vehicle B of the present application includes a main body B1, four wheels B2, a processing module B3, and four power units C (only two are shown). The body B1 can be used for carrying goods or people according to the requirement. The process module B3 is disposed in the body B1, and at least a portion of the power units C are disposed in the body B1, with each power unit C being connected to one of the wheels B2. The number of the power units C included in the self-propelled vehicle B can be increased or decreased according to the needs, for example, the self-propelled vehicle B may include only a single power unit C. The body B1 contains the necessary electronic and mechanical components for proper operation of the self-propelled vehicle B. The processing module B3 is electrically connected to the power device C, and the processing module B3 is used to control the power device C to operate, so that the power device C drives the wheels B2 to operate. The processing module B3 may include, for example, a circuit board, a microprocessor, etc. for controlling the necessary electronic components of the power device C.

The self-propelled Vehicle B of the present application may be, for example, an Automated Guided Vehicle (AGV), but not limited to this, and the self-propelled Vehicle B of the present application refers to any manned or manned Vehicle with an automatic walking function. In addition, the number of wheels B2 included in the self-propelled vehicle B and the number of power units C included in the self-propelled vehicle B may be varied according to the needs.

The power device C of the present application includes a driving unit C1, an outer casing C2, a speed reduction module a, and an outer end cap C3. The outer housing C2 is hollow, and the speed reduction module a and the driving unit C1 are disposed in the outer housing C2. An outer end cap C3 is secured to one end of the outer housing C2.

The deceleration module a includes: for the connection and operation relationship between these components, please refer to the description of the foregoing embodiments, and further description is omitted here.

The driving unit C1 is connected to the first carriage 10, the driving unit C1 is electrically connected to the processing module B3, and the processing module B3 can control the driving unit C1 to rotate the first carriage 10 about the central axis CP through the driving unit C1. Specifically, the driving unit C1 can be, for example, a motor including a rotor assembly C12 and a stator assembly C11. The stator assembly C11 is fixed to the inside of the outer case C2, and the rotor assembly C12 is fixed to the outer periphery of the first carrier 10. In practice, the rotor assembly C12 may be located adjacent the second end 10B of the first carrier 10, while the rotor assembly C12 may be located on the side of the first carrier 10 of the speed reduction module A. In one embodiment, the iron core included in the rotor assembly C12 may be disposed on the periphery of the first carrier 10, or the magnets included in the rotor assembly C12 may be annularly arranged on the periphery of the first carrier 10. By fixing the rotor assembly C12 on the periphery of the first carrier 10, the rotor assembly C12 and the first carrier 10 can rotate around the same central axis CP, thereby greatly reducing the volume of the power plant C. By arranging the magnets included in the rotor assembly C12 in a ring shape on the periphery of the first carrier 10, the assembly tolerance between the rotor assembly C12 and the first carrier 10 can be further reduced, the problem of deformation of the first carrier 10 during the process of fitting can be avoided, and the probability (also called the through rate) of successful assembly of the rotor assembly C12 and the first carrier 10 at one time can be improved, compared with the assembly method in which the rotor assembly C12 is fitted on the periphery of the first carrier 10.

As shown in fig. 13 to 15, the deceleration module a is disposed in the outer casing C2, the first carriage 10 and the end cap 20 of the deceleration module a may be directly engaged with the inner side of the outer casing C2, and the end cap 20 of the deceleration module a may be disposed corresponding to an end adjacent to the outer casing C2.

As shown in fig. 15 and 16, the second carriage 13 of the deceleration module a is connected to the wheel B2, and the auxiliary frame 16 can rotate the wheel B2. In practical applications, the second carriage 13 and the wheel B2 may respectively include a plurality of corresponding locking holes 136 and B21, and the locking holes 136 of the second carriage 13 and the locking holes B21 of the wheel B2 may be matched with a plurality of screws, so that the second carriage 13 and the wheel B2 are fixed to each other.

In a preferred embodiment, the speed reduction module a and the outer case C2 may be assembled by being fixed to each other in a repeatedly detachable manner, and the driving unit C1 and the first carriage 10 may be connected to each other in a repeatedly detachable manner, so that when the speed reduction module a of the power unit C fails, a related person may replace the speed reduction module a of the power unit C by a simple detaching operation.

In various embodiments, the power device C may also include two outer end caps C3, two outer end caps C3 are correspondingly disposed at two ends of the outer housing C2, and the end caps 20 of the speed reduction module a are substantially located in the outer housing C2. Of course, the outer end cap C3 of the second carrier 13 adjacent to the speed reduction module a has a through hole, and the second carrier 13 and the wheel B2 can be connected to each other through the through hole of the outer end cap C3.

As shown in fig. 13 to 15, the power device C may further include at least one sensor for sensing at least one of torque, speed and position of the first carriage 10 when rotating. For example, the sensor may be a torque sensor, a speed sensor, etc., without limitation. In one embodiment, the sensor may be a Rotary Encoder (rotation Encoder) C4, the Rotary Encoder C4 includes a reading unit C41 and a magnetic ring C42, the reading unit C41 may be fixedly disposed on the outer end cap C3, the magnetic ring C42 may be fixedly disposed on the periphery of the first carrier 10, the reading unit C41 is electrically connected to the processing module B3, the reading unit C41 and the magnetic ring C42 cooperate with each other to generate a corresponding signal and transmit the signal to the processing module B3, and the processing module B3 may analyze information such as a rotation speed and a rotation position of the first carrier 10.

As shown in fig. 15, 17 and 18, in one embodiment, the outer end cap C3 may include a through hole C31, a through hole C31 is disposed through the outer end cap C3, and one side of the outer end cap C3 may be recessed to form a bearing receiving groove C32. The power device C may further include an auxiliary bearing C5, an inner ring structure C51 of the auxiliary bearing C5 is fixed to the outer periphery of the first carriage 10, an outer ring structure C52 of the auxiliary bearing C5 is fixed to an inner side wall C33 forming the bearing receiving groove C32, and the first carriage 10 can rotate relative to the outer end cover C3 through the auxiliary bearing C5. In addition, the first hollow channel 1011 of the first carriage 10 may be communicated with the through hole C31 of the outer end cap C3, and the driving unit C1 and the related electric wires and the like included in the sensor may be disposed in the first hollow channel 1011 through the through hole C31 of the outer end cap C3. The auxiliary bearing C5, the outer end cap C3, the outer housing C2, the auxiliary frame 16, the second bearing 17 and the first loading frame 10 together form a closed space SP2, and the driving unit C1 is correspondingly disposed in the closed space SP 2.

As described above, as shown in fig. 13 to 15, when the processing module B3 controls the driving unit C1 to operate, the driving unit C1 will drive the first carriage 10 to rotate, so as to actuate the deceleration module a, and finally, the wheels B2 will be driven by the second carriage 13 to rotate.

Referring to fig. 19 and 20, the transfer apparatus D of the present application includes a base D1, 5 power devices C, 4 connecting members D2, and 5 processing modules D3. The transfer device D of the present application can be applied as a robot device, but is not limited thereto. The number of the power units C, the number of the connection assemblies D2, and the number of the processing modules D3 included in the transfer apparatus D may be varied according to the needs, and are not limited to those shown in the drawings. In addition, the size and shape of the connecting member D2 may vary according to requirements, and are not limited to those shown in the drawings.

The base D1 is used to rest on the ground, the base D1 is connected to one power unit C, the other end of the power unit C connected to the base D1 is connected to a connecting assembly D2, the other end of the connecting assembly D2 is connected to another power unit C, and so on. For a detailed description of the power device C, please refer to the foregoing embodiments, which are not repeated herein. Each processing module D3 is electrically connected to a power device C, and the processing module D3 can control the power device C to move, so as to make the connecting assemblies D2 move relatively. In practical applications, the second carriage 13 of the power device C at the end of the transfer apparatus D may be connected with a clamping member according to requirements, and the like, which is not limited herein.

As shown in fig. 20, the second carriage 13 of the power device C may be exposed at one end of the outer housing C2 and connected to one connecting assembly D2, and the other end of the outer housing C2 may be connected to the other connecting assembly D2. The processing module D3 may be disposed in a closed space SP3 formed by the outer housing C2, the connecting assembly D2, the outer end cover C3, the first carriage 10 and the auxiliary bearing C5.

In one embodiment, the power device C may further include a brake C7 and a wire guide C8. A part of the stopper C7 is fixed to one side of the outer end cap C3, and the stopper C7 is connected to the first carrier 10; the brake C7 is electrically connected to the processing module D3, and the processing module D3 can control the brake C7 to stop the first carriage 10 from rotating.

Lead element C8 includes a lead channel C81, lead channel C81 extends through lead element C8 along central axis CP, lead element C8 is fixed to second carrier frame 13, lead element C8 is not fixed to first carrier frame 10, a portion of lead element C8 is disposed in first hollow channel 1011 of first carrier frame 10, and a portion of lead element C8 is disposed in second hollow channel 133 of second carrier frame 13. The wire channel C81 is used to provide at least one wire arrangement, such as for connecting the processing module D3, the sensor, the driving unit C1, the actuator C7, etc.

It should be noted that, in the embodiment, one processing module D3 is disposed in each power device C, but the processing module D3 is not limited to be disposed in the power device C, and in different embodiments, the transfer apparatus D may only include one processing module D3, and the processing module D3 may be disposed in the base D1, and the processing module D3 is electrically connected to the driving unit C1 of each power device C through an electric wire.

Referring to fig. 21 to 33, an electric bicycle E of the present application includes a frame assembly E1, a handlebar E2, a front wheel E31, a rear wheel E32, a seat E4, a brake system E5, a transmission E6, a power output system E7, an electric system E8 and a processing module E9. The frame group E1 comprises a frame, a front fork, a rear fork and a seat tube. The handle E2, the front wheel E31, the rear wheel E32, the seat cushion E4, the brake system E5, the transmission E6, the power output system E7, the electric power system E8 and the processing module E9 are all disposed on the frame group E1, and specifically, the power output system E7 is a five-way joint disposed on the frame of the frame group E1. The transmission E6 is used to connect the power output system E7 and the rear wheel E32, and the transmission E6 may be, for example, a chain, but not limited thereto. In practical applications, the electric bicycle E may also include a transmission system. The electric system E8 includes a rechargeable battery, the processing module E9 is electrically connected to the power output system E7 and the electric system E8, and the processing module E9 can control the operation of the power output system E7 and the electric system E8.

As shown in fig. 22 to 28, the power output system E7 includes: a power device E71, a middle shaft E72, two cranks E73, a first one-way clutch E74, a fluted disc E75 and a second one-way clutch E76. The power device E71 includes an outer housing E711, a speed reduction module E712, a driving unit E713, an outer end cover E714, a first auxiliary end cover E715, a first auxiliary bearing E716, a torque sensor E717, a second auxiliary end cover E718, and a second auxiliary bearing E719. The connection and operation relationships among the outer housing E711, the speed reduction module E712, the driving unit E713 and the outer end cap E714 in this embodiment are substantially the same as those among the outer housing C2, the speed reduction module a, the driving unit C1 and the outer end cap C3 in the previous embodiment, and are not repeated herein, and only differences will be described below.

As shown in fig. 23 to 26, the outer end cap E714 of the present embodiment further includes an outer perforation E7141, and the outer perforation E7141 is disposed through the outer end cap E714. The first auxiliary end cover E715 is in an annular structure, the outer periphery of the first auxiliary end cover E715 and the outer end cover E714 form an inner side of the outer through hole E7141, the inner side of the first auxiliary end cover E715 and the outer ring structure E7162 of the first auxiliary bearing E716 are fixed to each other, the inner ring structure E7161 of the first auxiliary bearing E716 and the outer periphery of the middle shaft E72 are fixed to each other, and the middle shaft E72 can rotate relative to the first auxiliary end cover E715 through the first auxiliary bearing E716.

A portion of the central axle E72 is disposed through the power unit E71, and a portion of the central axle E72 corresponds to the first hollow channel 1011 passing through the first carriage 10. The two ends of the middle shaft E72 are connected with two cranks E73. Each crank E73 is connected to a pedal E10 at an end remote from the end connected to the central axle E72. The user can rotate the central axle E72 by stepping on the two pedals E10.

One end of the torsion sensor E717 may be fixed to the outer end cap E714, a portion of the torsion sensor E717 is disposed in the first hollow channel 1011 of the first carrier 10, a portion of the torsion sensor E717 is connected to the periphery of the bottom bracket E72, and the torsion sensor E717 is configured to sense the torsion of the bottom bracket E72 and generate a torsion signal correspondingly. The torque sensor E717 is electrically connected to the processing module E9 (as shown in fig. 21), the processing module E9 can receive the torque signal transmitted by the torque sensor E717, and accordingly determine whether the torque of the middle axle E72 reaches a predetermined torque; when the processing module E9 determines that the torsion of the center axle E72 reaches the predetermined torsion, the processing module E9 may control the driving unit E713 of the power device E71 to rotate the second carriage 13 through the deceleration module E712.

The second auxiliary end cover E718 is a ring-shaped structure, the second auxiliary end cover E718 is fixed to an end of the outer housing E711 opposite to the end provided with the outer end cover E714, and the end cover 20 of the speed reduction module E712 is correspondingly located in the outer housing E711. The inner side of the second auxiliary end cover E718 is fixed with an outer ring structure E7192 of a second auxiliary bearing E719, an inner ring structure E7191 of the second auxiliary bearing E719 is connected with a first one-way clutch E74, and the first one-way clutch E74 can rotate relative to the second auxiliary end cover E718 through the second auxiliary bearing E719. The toothed plate E75 is fixed to the first one-way clutch E74, and the toothed plate E75 is connected to the transmission member E6 (shown in FIG. 21). The first one-way clutch E74 is connected with the central axle E72, and the central axle E72 can be linked with the fluted disc E75 through the first one-way clutch E74.

With the arrangement of the first one-way clutch E74, when the user steps on the pedal E10 (as shown in fig. 21) to rotate the cranks E73 forward of the electric bicycle E (i.e. the user steps forward), the central axle E72 is connected to the toothed plate E75 through the first one-way clutch E74, and the toothed plate E75 rotates with the central axle E72, whereby the toothed plate E75 rotates the rear wheel E32 forward through the transmission member E6.

Conversely, when the user depresses the pedal E10 (as shown in fig. 21) to rotate the cranks E73 rearward of the electric bicycle E (i.e., the user depresses rearward), the center axle E72 will drive the first one-way clutch E74 to actuate, the first one-way clutch E74 will not drive the center axle E72 to drive the toothed disc E75 to actuate, and the toothed disc E75 will not rotate with the center axle E72.

The second one-way clutch E76 is connected with the second carrier 13 of the reduction module E712, and the second one-way clutch E76 is connected with the first one-way clutch E74. When the crank E73 is rotated forward by the user depressing the pedal E10 (as shown in FIG. 21), the first one-way clutch E74 will drive the second one-way clutch E76 to actuate, but the second one-way clutch E76 will not drive the second carriage 13 to rotate.

When the user steps on the pedal E10 (as shown in fig. 21) to rotate the crank E73 backward, the first one-way clutch E74 will make the middle axle E72 not to drive the toothed disc E75 to operate, and the middle axle E72 is in an idle state relative to the first one-way clutch E74, so the first one-way clutch E74 will not drive the second one-way clutch E76 to operate.

When the user steps forward and the central axle E72 drives the toothed disc E75 to rotate forward, if the processing module E9 (as shown in fig. 21) controls the driving unit E713 to operate at the same time, the second one-way clutch E76 rotates the synchronous toothed disc E75, so that the electric assisted riding effect can be achieved. In practical applications, while the user steps forward, the torque sensor E717 connected to the bottom bracket E72 continuously transmits a torque signal to the processing module E9 (as shown in fig. 21), and the processing module E9 (as shown in fig. 21) controls the driving unit E713 to operate according to the torque signal when the current torque of the bottom bracket E72 is determined to exceed a predetermined torque, so as to enable the second carrier 13 to rotate the toothed disc E75 through the second one-way clutch E76 and the first one-way clutch E74, thereby achieving the effect of electric assisted riding. For example, when the user rides on a high-gradient terrain, the torsion of the central axis E72 will be relatively large, and at this time, the processing module E9 (as shown in fig. 21) can control the driving unit E713 to rotate the toothed disc E75, thereby reducing the burden of pedaling.

Referring to fig. 27 to 33, in practical applications, the first one-way clutch E74 may include a first member E741, a first annular wall E742 and a plurality of first rollers E743, the first member E741 is annular, and the first member E741 includes a central through hole E7411, and the central through hole E7411 is disposed through the first member E741. The first member E741 has a plurality of first protruding structures E7412 and a plurality of first grooves E7413 on the periphery thereof, the plurality of first protruding structures E7412 are disposed at intervals, each first groove E7413 is located between two adjacent first protruding structures E7412, and one first protruding structure E7412 is located between two adjacent first grooves E7413. Each first groove E7413 has two first arc surfaces E7414, E7415, the radian of the two first arc surfaces E7414, E7415 is different.

The first annular wall E742 may be formed on an auxiliary frame F pivotally connected to the outer periphery of the central axis E72 through a third auxiliary bearing F1, the inner side wall of the first member E741 forming the central through hole E7411 and the outer periphery of the central axis E72 are fixed to each other, the first annular wall E742 is disposed facing the plurality of first grooves E7413, each of the first rollers E743 is disposed in one of the first grooves E7413, and each of the first rollers E743 is located between the first member E741 and the first annular wall E742. One end of the auxiliary frame F is connected to the gear plate E75.

As shown in fig. 21, 28 and 30, when the user steps forward to rotate the central axis E72 clockwise (i.e. the first direction), the central axis E72 will drive the first member E741 to rotate clockwise, and each of the first rollers E743 will be located between one of the first arc surfaces E7414 of the first groove E7413 and the first annular wall E742, at this time, each of the first rollers E743 will be clamped by the first annular wall E742 and the first member E741, the first annular wall E742 will rotate clockwise with the first member E741, the toothed disc E75 connected to the auxiliary frame F will rotate together with the auxiliary frame F, and the toothed disc E75 will drive the rear wheel E32 to rotate in the forward direction of the bicycle through the transmission E6.

As shown in fig. 21, 28 and 31, when the user steps backwards to rotate the central axis E72 counterclockwise (i.e. the second direction), the central axis E72 will drive the first member E741 to rotate counterclockwise, and each of the first rollers E743 will be correspondingly located between the other first arc surface E7415 of the first groove E7413 and the first annular wall E742, at this time, each of the first protruding structures E7412 will shift the adjacent first roller E743, and each of the first rollers E743 will not be held by the first member E741 and the first annular wall E742, so that the first annular wall E742 will not rotate together with the first member E741, that is, the auxiliary frame F and the toothed disc E75 connected thereto will not rotate together with the central axis E72. That is, when the user steps backwards, the central axis E72 drives the first member E741 to rotate, and each of the first rollers E743 is in a self-rotating state, while the first annular wall E742 and the toothed disc E75 connected thereto do not rotate.

Referring to fig. 23, 27, 28, 32 and 33, the second one-way clutch E76 includes a second member E761, a second annular wall E762 and a plurality of second rollers E763. The second member E761 is an annular structure. The periphery of the second component E761 has a plurality of second protruding structures E7611 and a plurality of second grooves E7612, the plurality of second protruding structures E7611 are disposed at intervals, each second groove E7612 is located between two adjacent second protruding structures E7611, and one second protruding structure E7611 is located between two adjacent second grooves E7612. Each second groove E7612 has two second arc surfaces E7613, E7614, and the two second arc surfaces E7613, E7614 have different radians.

The second member E761 may be integrally provided with the second carrier 13, and the second member E761 is located on a side of the second carrier 13 opposite to the side facing the first ring member 11 (as shown in fig. 24). The second annular wall E762 may be formed on the auxiliary frame F, and the second annular wall E762 is disposed to face the plurality of second grooves E7612, each of the second rollers E763 is disposed in one of the second grooves E7612, and each of the second rollers E763 is located between the second member E761 and the second annular wall E762.

As shown in fig. 21, 28, 32 and 33, when the driving unit E713 rotates the first carriage 10 clockwise, the deceleration module E712 will be driven to rotate the second carriage 13, the second member E761 will rotate clockwise with the second carriage 13, each second roller E763 will be correspondingly located between one of the second arc surfaces E7613 of the second groove E7612 and the second annular wall E762, at this time, each second roller E763 will be clamped by the second annular wall E762 and the second member E761, and the second annular wall E762 will rotate clockwise with the second member E761, and the toothed disc E75 connected with the auxiliary frame F will rotate together with the auxiliary frame F, thereby, the toothed disc E75 will drive the rear wheel E32 to rotate in the bicycle forward direction through the transmission piece E6.

As shown in fig. 28, 32 and 33, when the central axle E72 rotates clockwise to make the bicycle move forward, the central axle E72 will drive the first member E741 to rotate clockwise, the first annular wall E742 of the auxiliary frame F will be driven by the first rollers E743 to rotate clockwise, the second annular wall E762 of the auxiliary frame F will rotate relative to the second rollers E763, each second roller E763 will be driven to assume a self-rotating state, and the second annular wall E762 of the auxiliary frame F will not hold the second rollers E763 together with the second member E761, that is, when the central axle E72 rotates clockwise, the central axle E72 will not drive the second carrier 13 to rotate through the first one-way clutch E74 and the second one-way clutch E76 under the condition that the driving unit E713 is not actuated.

It is to be noted that the overall size of the power output system E7 can be reduced significantly by designing such that the first annular wall E742 of the first one-way clutch E74 and the second annular wall E762 of the second one-way clutch E76 are provided integrally with the sub-housing F, and the second member E761 of the second one-way clutch E76 and the second carrier 13 are provided integrally with each other. Of course, in different embodiments, the first annular wall E742 and the second annular wall E762 may be connected by non-integral molding, and the second member E761 and the second carrier 13 may be connected by non-integral molding.

In summary, the power output system of the electric bicycle of the present application further has advantages of convenient assembly, low assembly time, etc. compared with the related power output system of the conventional electric bicycle.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, so that all equivalent technical changes made by using the contents of the specification and drawings of the present application are included in the protection scope of the present application.

Claims

1. A deceleration module, comprising:

the first bearing frame is used for being connected with an external driving unit, and when the first bearing frame is driven by the external driving unit, the first bearing frame rotates by taking a central shaft as a center;

the second bearing frame is pivoted with the periphery of the first bearing frame;

a plurality of fixing pins provided at one side of the second carrier;

at least two annular members respectively defined as a first annular member and a second annular member; the first annular member is eccentrically disposed with respect to the central axis, and the second annular member is eccentrically disposed with respect to the central axis; the first ring member comprises a plurality of first external tooth-like structures, the first ring member comprises a plurality of first perforations; the inner side of the first annular component is pivoted to the periphery of the first bearing frame, and each first through hole is correspondingly penetrated with one fixing pin; each fixing pin is eccentrically arranged in the corresponding first through hole; the second annular member comprises a second plurality of external teeth structures, the second annular member comprises a second plurality of perforations; the inner side of the second annular member is pivoted to the periphery of the first bearing frame, and each second through hole is correspondingly penetrated with one fixing pin; each fixing pin is eccentrically arranged in the corresponding second through hole; wherein each of the fixing pins passes through one of the first through holes and one of the second through holes;

the auxiliary frame body is pivoted to the periphery of the first bearing frame;

the inner side of the outer ring-shaped member is provided with a plurality of inner tooth-shaped structures, the periphery of the outer ring-shaped member and the auxiliary frame body are mutually fixed, the plurality of inner tooth-shaped structures are mutually meshed with the first outer tooth-shaped structure, and the plurality of inner tooth-shaped structures are mutually meshed with the second outer tooth-shaped structure;

wherein the outer annular member includes the number of internal tooth formations that differs from the number of first external tooth formations included in the first annular member by less than 5 teeth; the number of the inner tooth-like structures included in the outer ring member and the number of the second outer tooth-like structures included in the second ring member differ by less than 5 teeth;

when the driving unit is controlled to rotate the first carrier about the central axis, the first annular member and the second annular member are interlocked by the first carrier to rotate relative to the outer annular member, and the first annular member and the second annular member drive the plurality of fixing pins to operate, so that the second carrier rotates relative to the first carrier.

2. The deceleration module according to claim 1, wherein said deceleration module comprises at least three bearings, each defined as a first bearing, a second bearing and a third bearing, an outer ring structure of said first bearing being fixed to an inner side of said second carrier, an inner ring structure of said first bearing being fixed to an outer periphery of said first carrier, an inner ring structure of said second bearing being fixed to an outer periphery of said first carrier; the outer ring structure of the second bearing is fixed with the inner side of the auxiliary frame body; the speed reduction module further comprises an end cover, the end cover is fixed to one end of the auxiliary frame body, an outer ring structure of the third bearing is fixed to the end cover and the auxiliary frame body, and an inner ring structure of the third bearing is fixed to the periphery of the second bearing frame; the first bearing frame, the second bearing frame, the first bearing, the auxiliary frame body, the second bearing, the third bearing and the end cover jointly form a closed space, and each of the fixing pin, the first annular member, the second annular member and the outer annular member is located in the closed space.

3. The deceleration module as recited in claim 1, wherein the first and second ring members are identical members, the first carrier having a body, a first annular protrusion and a second annular protrusion; the body is provided with a first hollow channel which penetrates through the body along the central shaft, the second bearing frame is provided with a second hollow channel which penetrates through the second bearing frame along the central shaft, and the first hollow channel and the second hollow channel are communicated with each other; the first annular protrusion structure is formed on the periphery of the body, the second annular protrusion structure is formed on the periphery of the body, the first annular member is pivoted on the periphery of the first annular protrusion structure, the second annular member is pivoted on the periphery of the second annular protrusion structure, and a first central shaft of a first central through hole of the first annular member, a second central shaft of a second central through hole of the second annular member and the central shafts are not overlapped with each other.

4. A power plant, comprising:

a speed-reducing module, which comprises,

a plurality of fixing pins provided at one side of the second carrier;

at least two annular members respectively defined as a first annular member and a second annular member; the first annular member is eccentrically disposed with respect to the central axis, and the second annular member is eccentrically disposed with respect to the central axis; the first ring member comprises a plurality of first external tooth-like structures, the first ring member comprises a plurality of first perforations; the inner ring of the first annular component is pivoted to the periphery of the first bearing frame, and each first through hole is correspondingly penetrated with one fixing pin; each of the fixing pins is eccentrically disposed in each of the first through holes; the second annular member comprises a second plurality of external teeth structures, the second annular member comprises a second plurality of perforations; the inner ring of the second annular member is pivoted to the periphery of the first bearing frame, and each second through hole is correspondingly penetrated with one fixing pin; each of the fixing pins is eccentrically disposed in each of the second through holes; wherein each of the fixing pins passes through one of the first through holes and one of the second through holes;

the end cover is fixed at one end of the auxiliary frame body, and the end cover is pivoted with the periphery of the second bearing frame;

the driving unit is connected with the first bearing frame;

the speed reduction module and the driving unit are arranged in the outer shell;

the outer end cover is fixed at one end of the outer shell;

when the driving unit is controlled to rotate the first carrier about the central axis, the first annular member and the second annular member are driven to rotate relative to the outer annular member, and the first annular member and the second annular member drive the plurality of fixing pins to actuate, so that the second carrier rotates relative to the first carrier.

5. The power unit of claim 4 wherein said first carrier has a first hollow passage extending therethrough along said central axis, said second carrier has a second hollow passage extending therethrough along said central axis, said first hollow passage and said second hollow passage being in communication with one another; the power device further comprises a lead member, the lead member comprises a lead channel, the lead channel penetrates through the lead member along the central axis, the lead member and the second bearing frame are mutually fixed, the lead member is not mutually fixed with the first bearing frame, and the lead channel is used for providing at least one wire arrangement.

6. The power plant of claim 4, wherein said deceleration module comprises at least four bearings respectively defined as a first bearing, a second bearing, a third bearing and an auxiliary bearing, wherein an outer ring structure of said first bearing is fixed to an inner side of said second carrier, an inner ring structure of said first bearing is fixed to an outer periphery of said first carrier, and an inner ring structure of said second bearing is fixed to an outer periphery of said first carrier; the outer ring structure of the second bearing is fixed with the inner side of the auxiliary frame body; the speed reduction module further comprises an end cover, the end cover is fixed to one end of the auxiliary frame body, an outer ring structure of the third bearing is fixed to the end cover and the auxiliary frame body, and an inner ring structure of the third bearing is fixed to the periphery of the second bearing frame; the first bearing frame, the second bearing frame, the first bearing, the auxiliary frame body, the second bearing, the third bearing and the end cover together form a closed space, and each fixing pin, the first annular member, the second annular member and the outer annular member are located in the closed space; the inner ring structure of the auxiliary bearing and the periphery of the first bearing frame are fixed with each other, and the outer ring structure of the auxiliary bearing and the outer end cover are fixed with each other; the driving unit is located in another closed space formed by the first bearing frame, the auxiliary bearing, the second bearing, the outer shell, the auxiliary frame body and the outer end cover together.

7. The power device of claim 4, wherein the first annular member and the second annular member are identical members, and the first carrier has a body, a first annular protrusion and a second annular protrusion; the body is provided with a first hollow channel which penetrates through the body along the central shaft, the second bearing frame is provided with a second hollow channel which penetrates through the second bearing frame along the central shaft, and the first hollow channel and the second hollow channel are communicated with each other; the first annular protrusion structure is formed on the periphery of the body, the second annular protrusion structure is formed on the periphery of the body, the first annular member is pivoted on the periphery of the first annular protrusion structure, the second annular member is pivoted on the periphery of the second annular protrusion structure, and a first central shaft of a first central through hole of the first annular member, a second central shaft of a second central through hole of the second annular member and the central shafts are not overlapped with each other.

8. The power unit as claimed in claim 4, wherein the driving unit is a motor, the motor includes a stator assembly and a rotor assembly, the stator assembly is fixed inside the outer housing, the rotor assembly is fixed to the outer periphery of the first carrier, and the rotor assembly rotates around the central shaft relative to the stator assembly when the driving unit is driven.

9. The power unit of claim 4, further comprising at least one sensor for sensing at least one of torque, speed, and position of the first carrier when rotated; one of the sensors is a rotary encoder, the rotary encoder comprises a reading unit and a magnetic ring, the reading unit is fixedly arranged on the outer end cover, and the magnetic ring is fixedly arranged on the periphery of the first bearing frame.

10. A self-propelled vehicle comprising a power unit according to any one of claims 4 to 9, at least two wheels, and a processing module, wherein one of the wheels is connected to the second carriage, the processing module is electrically connected to the driving unit, and the processing module can control the driving unit to rotate the wheels connected to the second carriage through the deceleration module.

11. A transfer apparatus, characterized in that the transfer apparatus comprises at least one power device according to any one of claims 4 to 9, at least one connecting assembly, and at least one processing module, the second carrier is connected to the connecting assembly, the processing module is electrically connected to the driving unit, and the processing module can control the driving unit to actuate, so as to drive the connecting assembly connected to the second carrier to actuate through the deceleration module.

12. A power take-off system adapted to be mounted on a frame set of an electric bicycle, the power take-off system comprising: the power plant of any one of claims 4 to 9, the power take-off system further comprising,

a central shaft;

the two cranks are connected to two ends of the middle shaft, and the other end of each crank is used for connecting a pedal;

a fluted disc;

the first one-way clutch is connected with the middle shaft and is connected with the fluted disc;

the second one-way clutch is connected with the second bearing frame and is connected with the first one-way clutch;

wherein, the power device also comprises a power device,

the first auxiliary end cover is of an annular structure, the periphery of the first auxiliary end cover and the inner side of an outer through hole of the outer end cover are fixed with each other, and the inner side of the first auxiliary end cover and the periphery of the middle shaft are pivoted with each other;

the second auxiliary end cover is fixed at one end of the outer shell and is mutually pivoted with the first one-way clutch;

when a user steps on the two pedals to enable the electric bicycle to move forwards, the two cranks drive the middle shaft to rotate in a first direction, the middle shaft drives the first one-way clutch to act so as to drive the fluted disc to rotate in the first direction, and the fluted disc can drive a rear wheel of the electric bicycle to rotate through a transmission piece;

when the two cranks are driven to rotate towards a second direction, the middle shaft rotates towards the second direction, the middle shaft is linked with the first one-way clutch to act, and the first one-way clutch is not linked with the fluted disc to rotate; the second direction is opposite to the first direction;

when the driving unit is controlled to operate, the driving unit drives the first bearing frame to rotate in the first direction, the first annular member and the second annular member are linked by the first bearing frame to rotate relative to the outer annular member, the first annular member and the second annular member drive the plurality of fixing pins to operate, so that the second bearing frame rotates relative to the first bearing frame, and the second bearing frame drives the second one-way clutch to operate, so as to link the first one-way clutch to operate, so as to drive the fluted disc to rotate in the first direction.

13. A power output system in accordance with claim 12, wherein the power output system further comprises a processing module and a torque sensor, the processing module is electrically connected to the torque sensor and the driving unit, the torque sensor is configured to sense the torque of the bottom bracket axle and generate a torque signal; when the middle shaft is driven to rotate towards the first direction and the processing module determines that the torque of the middle shaft exceeds a preset torque according to the torque signal, the processing module controls the driving unit to actuate, so that the second bearing frame drives the second one-way clutch to actuate, and the fluted disc is driven to rotate towards the first direction through the first one-way clutch.

14. A power take-off system as defined in claim 12, wherein the first one-way clutch includes a first member, a first annular wall, and a plurality of first rollers, the first member being an annular structure, the first member being fixed to the outer periphery of the bottom bracket axle, the outer periphery of the first member having a plurality of first projecting structures and a plurality of first grooves, the plurality of first projecting structures and the plurality of first grooves being disposed in spaced relation to each other, and each of the first grooves being disposed between two adjacent first projecting structures; the first annular wall is formed on an auxiliary frame body, the auxiliary frame body is pivoted on the periphery of the middle shaft, the second one-way clutch is connected with the auxiliary frame body, and one end of the auxiliary frame body is connected with the fluted disc; each first groove is provided with two first cambered surfaces, and the radian of the two first cambered surfaces is different; when the middle shaft is driven to rotate towards the first direction, each first roller is located between one of the first arc surfaces and the first annular wall, each first roller is held by the first member and the first annular wall, and the first annular wall rotates towards the first direction along with the middle shaft so as to drive the fluted disc to rotate towards the first direction; when the middle shaft is driven to rotate towards the second direction, each first roller is driven to rotate between the other first cambered surface and the first annular wall, and the first annular wall cannot be driven by the middle shaft.

15. A power take-off system as defined in claim 14, wherein the second one-way clutch includes a second member, a second annular wall, and a plurality of second rollers, the second member being an annular structure, the second member being formed on one side of the second carrier, the second member having a plurality of second protruding structures and a plurality of second grooves on an outer periphery thereof, the plurality of second protruding structures and the plurality of second grooves being disposed at intervals from each other, and each of the second grooves being located between adjacent two of the second protruding structures; the second annular wall is formed on the auxiliary frame body; each second groove is provided with two second cambered surfaces, and the radian of the two second cambered surfaces is different; when the driving unit is driven to drive the second bearing frame to rotate towards the first direction, each second roller is located between one of the second cambered surfaces and the second annular wall, each second roller is fixedly held by the second member and the second annular wall, and the second annular wall rotates towards the first direction along with the second bearing frame, so that the fluted disc is linked to rotate towards the first direction.

16. An electric bicycle, comprising: the power take-off system of claim 12, said frame assembly, a processing module, and an electrical power system, said frame assembly being configured with a frame, a handle, a front wheel, said rear wheel, a seat cushion, a braking system, and said transmission member; the power output system is arranged on the frame group; the processing module is electrically connected with the driving unit; the electric power system is electrically connected with the processing module and is used for providing electric power required by the operation of the power output system.

17. An electric bicycle according to claim 16, wherein the power output system further includes a processing module and a torque sensor, the processing module is electrically connected to the torque sensor and the driving unit, the torque sensor is configured to sense a torque of the bottom bracket axle and generate a torque signal; when the middle shaft is driven to rotate towards the first direction and the processing module determines that the torque of the middle shaft exceeds a preset torque according to the torque signal, the processing module controls the driving unit to actuate, so that the second bearing frame drives the second one-way clutch to actuate, and the fluted disc is driven to rotate towards the first direction through the first one-way clutch.

18. An electric bicycle according to claim 16, wherein the first one-way clutch includes a first member, a first annular wall and a plurality of first rollers, the first member is an annular structure, the first member is fixed to the outer periphery of the bottom bracket axle, the outer periphery of the first member has a plurality of first protruding structures and a plurality of first grooves, the plurality of first protruding structures and the plurality of first grooves are spaced apart from each other, and each first groove is located between two adjacent first protruding structures; the first annular wall is formed on an auxiliary frame body, the auxiliary frame body is pivoted on the periphery of the middle shaft, the second one-way clutch is connected with the auxiliary frame body, and one end of the auxiliary frame body is connected with the fluted disc; each first groove is provided with two first cambered surfaces, and the radian of the two first cambered surfaces is different; when the middle shaft is driven to rotate towards the first direction, each first roller is located between one of the first arc surfaces and the first annular wall, each first roller is held by the first member and the first annular wall, and the first annular wall rotates towards the first direction along with the middle shaft so as to drive the fluted disc to rotate towards the first direction; when the middle shaft is driven to rotate towards the second direction, each first roller is driven to rotate between the other first cambered surface and the first annular wall, and the first annular wall cannot be driven by the middle shaft.

19. An electric bicycle according to claim 18, wherein the second one-way clutch includes a second member, a second annular wall and a plurality of second rollers, the second member is of an annular structure, the second member is formed at one side of the second carrier, the second member has a plurality of second protruding structures and a plurality of second grooves on its periphery, the plurality of second protruding structures and the plurality of second grooves are spaced apart from each other, and each second groove is located between two adjacent second protruding structures; the second annular wall is formed on the auxiliary frame body; each second groove is provided with two second cambered surfaces, and the radian of the two second cambered surfaces is different; when the driving unit is driven to drive the second bearing frame to rotate towards the first direction, each second roller is located between one of the second cambered surfaces and the second annular wall, each second roller is fixedly held by the second member and the second annular wall, and the second annular wall rotates towards the first direction along with the second bearing frame, so that the fluted disc is linked to rotate towards the first direction.

20. An electric bicycle according to claim 19, wherein the power unit further includes a first auxiliary bearing, a second auxiliary bearing and a third auxiliary bearing, an inner ring structure of the first auxiliary bearing is fixed to an outer periphery of the center axle, and an outer ring structure of the first auxiliary bearing is fixed to an inner side wall of the outer end cap forming the outer through hole; the inner ring structure of the second auxiliary bearing is fixed with the periphery of the auxiliary frame body, and the outer ring structure of the second auxiliary bearing is fixed with the inner side of the second auxiliary end cover; the inner ring structure of the third auxiliary bearing is fixed with the periphery of the middle shaft, and the outer ring structure of the third auxiliary bearing is fixed with the inner side of the auxiliary frame body.