阅读说明：本技术 电动自行车合力输出中轴电机 (Resultant force output middle shaft motor of electric bicycle ) 是由 沈国栋 于 2021-08-23 设计创作，主要内容包括：本发明提供一种电动自行车合力输出中轴电机,它包括马达、人力模块,所述马达、人力模块通过壳体装配在自行车的五通位置,所述人力模块包括心轴,所述心轴的两端装配脚踏；所述心轴与马达输出轴分别与合力组件传动连接,所述合力组件与所述心轴同轴装配,所述合力组件包括连接人力模块动力输出的内套,连接马达动力输出的外套,所述内套、外套之间装配有单向整合二者合力的中套；所述中套的端部与牙盘固定装配。在该电机中,合力组件通过中套同时承接人力和电力的传动,比起传统的两个单独离合结构大大简化,并且两个离合结构之间不会产生干扰。另外,该部件可以整体装配安装,更加的方便,同时也可以大大降低整体装配误差。(The invention provides a resultant force output middle shaft motor of an electric bicycle, which comprises a motor and a manpower module, wherein the motor and the manpower module are assembled at a five-way position of the bicycle through a shell; the spindle and the output shaft of the motor are respectively in transmission connection with a resultant force assembly, the resultant force assembly is coaxially assembled with the spindle, the resultant force assembly comprises an inner sleeve connected with the power output of the manpower module and an outer sleeve connected with the power output of the motor, and a middle sleeve for unidirectionally integrating resultant forces of the inner sleeve and the outer sleeve is assembled between the inner sleeve and the outer sleeve; the end part of the middle sleeve is fixedly assembled with the chain wheel. In the motor, the resultant force assembly simultaneously bears the transmission of manpower and electric power through the middle sleeve, so that the motor is greatly simplified compared with the traditional two independent clutch structures, and no interference is generated between the two clutch structures. In addition, the component can be integrally assembled and mounted, so that the assembly is more convenient, and meanwhile, the integral assembly error can be greatly reduced.)

1. A motor for a resultant force output middle shaft of an electric bicycle comprises a motor and a manpower module, wherein the motor and the manpower module are assembled at a five-way position of the bicycle through a shell, the manpower module comprises a mandrel, and pedals are assembled at two ends of the mandrel; the method is characterized in that: the spindle and a motor output shaft are respectively in transmission connection with a resultant force assembly, the resultant force assembly is coaxially assembled with the spindle, the resultant force assembly comprises an inner sleeve connected with the power output of a manual module, an outer sleeve connected with the power output of the motor, a middle sleeve integrating resultant force of the inner sleeve and the outer sleeve is assembled between the inner sleeve and the outer sleeve, the inner sleeve, the outer sleeve and the middle sleeve are all in annular structures, the inner sleeve, the outer sleeve and the middle sleeve are connected and assembled through rolling pieces, a clutch piece for one-way transmission from the inner sleeve to the middle sleeve when the inner sleeve and the middle sleeve are in forward treading movement is assembled between the inner sleeve and the middle sleeve, the clutch piece for one-way transmission is assembled between the outer sleeve and the middle sleeve, and the rotation direction of the transmission torque of the inner sleeve to the middle sleeve is the same as the rotation direction of the transmission torque from the outer sleeve to the middle sleeve; the end part of the middle sleeve is fixedly assembled with the chain wheel.

2. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 1, wherein: an output gear is assembled at the output shaft end of the motor, and a transmission gear meshed with the output gear is designed on the outer sleeve.

3. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 2, wherein: the transmission gear and the outer sleeve are integrally processed.

4. The electric bicycle resultant force output bottom bracket bearing motor according to any one of claims 1 to 3, characterized in that: the mandrel is in transmission connection with the inner sleeve through a torque sleeve, the mandrel penetrates through the torque sleeve, the inner wall of one end of the torque sleeve is in transmission connection with the mandrel, the outer wall of the other end of the torque sleeve is in transmission connection with the inner sleeve, and a torque sensing part is assembled on the torque sleeve.

5. The electric bicycle resultant force output bottom bracket bearing motor according to any one of claims 1 to 3, characterized in that: the chain wheel is fixedly connected with the right end of the middle sleeve through a connecting piece, and a through hole penetrating through the connecting piece is processed in the middle of the connecting piece.

6. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 4, wherein: the chain wheel is fixedly connected with the right end of the middle sleeve through a connecting piece, and a through hole penetrating through the connecting piece is processed in the middle of the connecting piece.

7. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 5, wherein: the right end of the middle sleeve extends out, an external thread is processed on the outer wall of the right end of the middle sleeve, and an internal thread meshed with the external thread is designed on the through hole of the connecting piece.

8. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 6, wherein: the right end of the middle sleeve extends out, an external thread is processed on the outer wall of the right end of the middle sleeve, and an internal thread meshed with the external thread is designed on the through hole of the connecting piece.

9. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 7, wherein: the assembly of doing all can is in the casing right side, the right side output of motor is equipped with output gear, the overcoat right side integrated into one piece of the subassembly that makes all can has drive gear, the left side seal of casing is equipped with the housing, processing has the round hole in the middle of the housing, the round hole passes through the bearing with well cover outer wall in the middle of the housing and is connected, convex annular panel shape right in the middle of housing and connecting piece are, the right side protrusion of housing is deepened in the left side of connecting piece, connecting piece left end inner wall with through waterproof circle seal assembly in the middle of the housing right-hand member outer wall.

10. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 8, wherein: the assembly of doing all can is in the casing right side, the right side output of motor is equipped with output gear, the overcoat right side integrated into one piece of the subassembly that makes all can has drive gear, the left side seal of casing is equipped with the housing, processing has the round hole in the middle of the housing, the round hole passes through the bearing with well cover outer wall in the middle of the housing and is connected, convex annular panel shape right in the middle of housing and connecting piece are, the right side protrusion of housing is deepened in the left side of connecting piece, connecting piece left end inner wall with through waterproof circle seal assembly in the middle of the housing right-hand member outer wall.

11. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 5, wherein: the middle sleeve right end face is provided with more than two threaded holes uniformly distributed along the middle sleeve axis, the connecting piece is provided with a through hole corresponding to the threaded hole, and the connecting piece is fixed on the right side of the middle sleeve through a bolt.

12. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 6, wherein: the middle sleeve right end face is provided with more than two threaded holes uniformly distributed along the middle sleeve axis, the connecting piece is provided with a through hole corresponding to the threaded hole, and the connecting piece is fixed on the right side of the middle sleeve through a bolt.

13. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 11, wherein: the assembly of doing all can be in 3 right sides of casing, the right side output of motor is equipped with output gear, the overcoat right side integrated into one piece of the subassembly that makes all can has drive gear, the left side seal of casing is equipped with the housing, processing has the round hole in the middle of the housing, the round hole in the middle of the housing through waterproof circle with the outer wall seal assembly of the subassembly overcoat that makes all can, the through-hole pass through the oil blanket in the middle of the connecting piece with the sealed assembly of mandrel right-hand member.

14. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 12, wherein: the assembly of making a concerted effort is in the casing right side, the right side output of motor is equipped with output gear, the overcoat right side integrated processing of making a concerted effort the subassembly has drive gear, the left side seal of casing is equipped with the housing, processing has the round hole in the middle of the housing, the round hole in the middle of the housing through waterproof circle with the outer wall seal assembly of making a concerted effort the subassembly overcoat, the through-hole pass through the oil blanket in the middle of the connecting piece with the sealed assembly of mandrel right-hand member.

15. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 13, wherein: the middle sleeve right-hand member design has the step shaft that the external diameter reduces, the step shaft left side corresponds there is the shaft shoulder, processing has the screw hole that runs through on the shaft shoulder, the connecting piece passes through the spacing assembly of shaft shoulder and is in on the step shaft of middle sleeve right-hand member.

16. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 14, wherein: the middle sleeve right-hand member design has the step shaft that the external diameter reduces, the step shaft left side corresponds there is the shaft shoulder, processing has the screw hole that runs through on the shaft shoulder, the connecting piece passes through the spacing assembly of shaft shoulder and is in on the step shaft of middle sleeve right-hand member.

17. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 1, wherein: the rolling parts are steel balls, positioning grooves for containing the corresponding steel balls are respectively arranged on the outer wall of the inner sleeve on the inner wall of the outer sleeve and the inner wall and the outer wall of the middle sleeve, and the clutch parts are eccentric center wedges.

18. The electric bicycle resultant force output bottom bracket bearing motor as set forth in claim 5, wherein: two parallel chain wheels are assembled on the connecting piece.

Technical Field

The invention belongs to the technical field of motors, and particularly relates to a motor for a resultant force output middle shaft of an electric bicycle.

Background

The electric power-assisted bicycle is a bicycle which provides auxiliary power through a power supply, the power supply on the bicycle can enable the kinetic energy output by the motor and the kinetic energy driven by the pedals to jointly form resultant force through a resultant force mechanism, and the power supply assists the pedal force to jointly drive the bicycle to move. Such bicycle power-assist structures using electric energy are therefore also commonly referred to as resultant force mechanisms, cooperative structures, auxiliary transmission structures, double brake structures, etc.

The motor of the electric power-assisted bicycle has different structures according to different positions of the bicycle, wherein the motor used in the middle five-way position of the bicycle is generally called a bottom bracket motor. In order to facilitate the refitting of the bicycle, the motor can be directly arranged in the bottom bracket of the bicycle. The patent with the publication number CN2354868Y discloses an electric power assisted bicycle man-machine cooperation mechanism, which integrates a shaft for mounting a chain wheel with the chain wheel, a transmission structure and a motor by using an integrated shell structure, so that the mounting at a five-way position of the bicycle is more convenient, but the resultant structure is complex, the number of parts is too many, the structure like the chain wheel is not changed in the mechanism, and the mechanism is not stable enough during operation.

An electric bicycle dual-purpose actuating device is disclosed in a patent with a publication number of CN2541317Y, and an electric auxiliary transmission of a bicycle is disclosed in a patent with a publication number of CN 2561697Y; the two patents also use a shell to integrate a shaft for mounting the chain wheel with the chain wheel, a transmission structure and a motor, and the shaft sleeve structure on the transmission shell can be directly inserted into a five-way of the bicycle, in the structures of these two patents, a resultant force transmission structure is further designed, in which, the clutch assembly between the chain wheel and the driving gear is realized through an inner sleeve or a structure of an interlocking body, in both of these patents, the clutching structure is a mounting location away from the sprocket when the inner sleeve or the interlocking body is mounted off the spindle or the shaft, one side of the inner sleeve or the interlocking body is mounted directly on the spindle or the shaft, therefore, the friction force between the inner sleeve and the mandrel or between the connecting body and the shaft rod is large, so that the whole friction piece is easy to damage, and meanwhile, the thickness of the whole structure is large, so that the product is heavier. The chain wheels in the two patents are respectively assembled with the spindle or the shaft rod through the inner sleeve or the linkage body, and the chain wheels in the two patents are respectively assembled with the transmission gear through the inner sleeve or the linkage body; these structures all need independent assembly when assembling, make the assembly process of whole product comparatively complicated. Greatly influencing the assembly effect of the whole product.

In addition in traditional axis motor drive structure, often direct drive is connected between sprocket and power motor's the output shaft, when booster bicycle pedal starts like this, must drive all drive parts operation between sprocket and the motor in step, the pedal power of making like this the beginning is bigger, and power motor begins when the helping hand, pedal power reduces by a wide margin, pedal can produce great pause and contuse the sense around can the helping hand begins like this, the effect of riding is influenced, in addition, after booster power exhausts, because sprocket and reduction structure continue the linkage, then can make simple bicycle ride receive great torsion, can waste on the contrary and ride passerby's physical power.

Disclosure of Invention

Aiming at the problems, the invention provides the resultant force output middle shaft motor of the electric bicycle, which has the advantages of stable and compact structure, convenience in installation and use, longer service life and better riding effect when the electric bicycle is used for riding and starting with assistance and running by independent pedaling.

The technical scheme adopted by the invention for solving the technical problems is as follows: the motor and the manpower module are assembled at the five-way position of the bicycle through a shell, the manpower module comprises a mandrel, and pedals are assembled at two ends of the mandrel; the spindle and a motor output shaft are respectively in transmission connection with a resultant force assembly, the resultant force assembly is coaxially assembled with the spindle, the resultant force assembly comprises an inner sleeve connected with the power output of a manual module, an outer sleeve connected with the power output of the motor, a middle sleeve integrating resultant force of the inner sleeve and the outer sleeve is assembled between the inner sleeve and the outer sleeve, the inner sleeve, the outer sleeve and the middle sleeve are all in annular structures, the inner sleeve, the outer sleeve and the middle sleeve are connected and assembled through rolling pieces, a clutch piece for one-way transmission from the inner sleeve to the middle sleeve when the inner sleeve and the middle sleeve are in forward treading movement is assembled between the inner sleeve and the middle sleeve, the clutch piece for one-way transmission is assembled between the outer sleeve and the middle sleeve, and the rotation direction of the transmission torque of the inner sleeve to the middle sleeve is the same as the rotation direction of the transmission torque from the outer sleeve to the middle sleeve; the end part of the middle sleeve is fixedly assembled with the chain wheel.

Preferably, the output shaft end of the motor is provided with an output gear, and the outer sleeve is provided with a transmission gear meshed with the output gear.

Preferably, the transmission gear and the outer sleeve are integrally processed.

Preferably, the mandrel is in transmission connection with the inner sleeve through a torque sleeve, the mandrel penetrates through the torque sleeve, the inner wall of one end of the torque sleeve is in transmission connection with the mandrel, the outer wall of the other end of the torque sleeve is in transmission connection with the inner sleeve, and a torque sensing part is assembled on the torque sleeve.

Preferably, the chain wheel is fixedly connected with the right end of the middle sleeve through a connecting piece, and a through hole penetrating through the connecting piece is machined in the middle of the connecting piece.

Preferably, the inner sleeve, the outer sleeve and the middle sleeve are aligned on the left side, the right end of the middle sleeve extends out, an external thread is processed on the outer wall of the right end of the middle sleeve, and an internal thread meshed with the external thread is designed on a through hole of the connecting piece.

As preferred, the assembly of making an uproar is in the casing right side, the right side output of motor is equipped with output gear, the overcoat right side integrated into one piece of making an uproar subassembly has drive gear, the left side of casing is sealed to be equipped with the housing, processing has the round hole in the middle of the housing, the round hole passes through the bearing with well cover outer wall in the middle of the housing and is connected, the housing is middle convex annular panel shape to the right with the connecting piece, the right side protrusion of housing is deepened in the left side of connecting piece, connecting piece left end inner wall with through waterproof circle seal assembly in the middle of the housing right-hand member outer wall, through shield seal assembly between connecting piece and the mandrel.

Preferably, more than two threaded holes are formed in the right end face of the middle sleeve and are uniformly distributed along the axis of the middle sleeve, through holes corresponding to the threaded holes are formed in the connecting piece, and the connecting piece is fixed to the right side of the middle sleeve through bolts.

Preferably, the assembly of making an uproar is in the casing right side, the right side output of motor is equipped with output gear, the overcoat right side integrated processing of the assembly of making an uproar has drive gear, the left side of casing is sealed to be equipped with the housing, processing has the round hole in the middle of the housing, the round hole in the middle of the housing through waterproof circle with the outer wall seal assembly of the assembly overcoat of making an uproar, through-hole pass through the oil blanket in the middle of the connecting piece with the sealed assembly of mandrel right-hand member, the connecting piece outer lane with the sealed assembly of overcoat outer lane.

Preferably, the right end of the middle sleeve is provided with a stepped shaft with a reduced outer diameter, the left side of the stepped shaft is correspondingly provided with a shaft shoulder, a penetrating threaded hole is machined in the shaft shoulder, and the connecting piece is assembled on the stepped shaft at the right end of the middle sleeve in a limiting mode through the shaft shoulder.

Preferably, the rolling members are steel balls, the outer wall of the inner sleeve on the inner wall of the outer sleeve and the inner wall and the outer wall of the middle sleeve are respectively provided with a positioning groove for accommodating the corresponding steel balls, and the clutch member is a eccentric center wedge block.

Preferably, two parallel crankshafts are mounted on the connecting piece.

The invention has the beneficial effects that: the resultant force output middle shaft motor of the electric bicycle is usually directly inserted into a five-way of the bicycle through a shell of the motor, two ends of a mandrel are connected into a pedal structure of the bicycle, a chain wheel is assembled with a bicycle chain in a transmission way, and pedals are assembled at two ends of the mandrel. When the electric power-assisted bicycle is ridden by using the motor, the pedal is treaded to drive the mandrel to rotate, the mandrel transmits the rotation to the inner sleeve of the resultant force assembly, when the inner sleeve rotates relative to the middle sleeve along the pedal movement direction, the torque of the inner sleeve is unidirectionally output to the middle sleeve, the detection structure in the motor detects the pedal movement, the output shaft of the motor rotates to drive the outer sleeve of the resultant force assembly to rotate, the same torque of the outer sleeve is unidirectionally output to the middle sleeve, and thus the auxiliary power generated by electric power and the pedal torque generated by manpower drive the chain wheel to rotate together, and finally the electric power-assisted bicycle is driven to operate together.

In the operation process that the motor used, the pedal motion that is launched by the manpower is finally transmitted to the chain wheel through well cover, and the rotational speed that produces in the manpower use or torsion change are detected the back by detection mechanism, just can start electric power, then electric power passes through the output shaft of motor and finally transmits to the chain wheel through well cover, and electric power plays the effect of supplementary riding at this moment. The transmission from manpower to chain wheel and the transmission from electric power to chain wheel are one-way transmission, and the two torsion forces are not interfered before being transmitted to the middle sleeve of fixed chain wheel. When the manpower is used for pedaling alone, the outer sleeve of the resultant force assembly, the whole transmission structure and the motor are completely separated, the motion of the bicycle is not influenced, and the motion of the whole bicycle is more free; when the rotating speed of the motor transmitted to the outer sleeve is greater than the rotating speed of the motor transmitted to the inner sleeve by the pedal force, the inner sleeve and the mandrel assembled in the inner sleeve are separated from the middle sleeve, no redundant loss exists in the electric power transmission process, and the electric energy utilization rate is higher.

In the motor, the power transmitted from both the human power and the electric power is directly synthesized by the resultant force assembly. The two groups of rotating assemblies and the two groups of clutch transmission structures are simultaneously and respectively realized, the integrated resultant force assembly structure is simultaneously used as a combined piece for finally transmitting manpower and electric power through the middle sleeve, the structure is greatly simplified compared with the two traditional independent clutch structures, and no interference is generated between the two clutch structures. In addition, the structure of the part is similar to that of the one-way bearing, the part can be integrally assembled and mounted, so that the whole motor is more convenient to assemble, and the part can be conveniently processed in batches.

Drawings

Fig. 1 is a schematic structural view of the cross-sectional direction of the resultant force output bottom bracket axle motor of the electric bicycle in embodiment 1.

Fig. 2 is a schematic structural view in the cross-sectional direction of the resultant force assembly in embodiment 1.

Fig. 3 is a schematic structural view of the resultant force assembly in the front direction in example 1.

FIG. 4 is a schematic diagram of the operation process of the resultant output shaft motor of the electric bicycle.

Fig. 5 is a schematic structural view of the motor in the cross-sectional direction of the resultant force output bottom bracket axle of the electric bicycle in the embodiment 2.

Fig. 6 is a schematic structural view in the cross-sectional direction of the resultant force member in embodiment 2.

Fig. 7 is a schematic structural view of the resultant force assembly in the front direction in example 2.

Fig. 8 is a schematic structural view of the resultant force output bottom bracket axle motor of the electric bicycle in the cross-sectional direction in embodiment 3.

Fig. 9 is a schematic structural view in the cross-sectional direction of the resultant force member in embodiment 3.

Fig. 10 is a schematic structural view of the resultant force assembly in the front direction in example 3.

Detailed Description

The invention is further illustrated by the following examples:

as used in this patent, directional terms, such as orientation or positional relationship, are used with respect to the drawings only for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Example 1

As shown in fig. 1, 2 and 3, in embodiment 1, the resultant output bottom bracket motor for the electric bicycle comprises a motor 1 and a human module 2, wherein the motor 1 and the human module 2 are assembled at a five-way position of the bicycle through a shell 3, the human module 2 comprises a mandrel 21, and pedals 8 are assembled at two ends of the mandrel 21. The present embodiment is characterized in that the spindle 21 and the output shaft of the motor 1 are respectively in transmission connection with a resultant force assembly 4, the resultant force assembly 4 is coaxially assembled with the spindle 21, the resultant force assembly 4 includes an inner sleeve 41a connected with the power output of the human power module, and an outer sleeve 42a connected with the power output of the motor, a middle sleeve 43a integrating the resultant force of the inner sleeve 41a and the outer sleeve 42a is assembled between the inner sleeve 41a and the outer sleeve 42a, the inner sleeve 41a, the outer sleeve 42a and the middle sleeve 43a all adopt an annular structure, the inner sleeve 41a, the outer sleeve 42a and the middle sleeve 43a are connected and assembled through a rolling member 44a, a clutch member 45a for unidirectional transmission of the inner sleeve 41a to the middle sleeve 43a when the pedal is stepped forward is assembled between the inner sleeve 41a and the middle sleeve 43a, a transmission clutch member 45 for unidirectional transmission is assembled between the outer sleeve 42a and the middle sleeve 43a, a transmission torque direction of the inner sleeve 41a to the middle sleeve 42a is the same as a transmission torque direction of the outer sleeve 43a to the middle sleeve 42a, as shown in fig. 3, when the inner sleeve 41a and the outer sleeve 42a respectively rotate relative to the middle sleeve 43a along the arrow direction, the middle sleeve 43a can be driven to rotate, so that resultant force output can be realized; the end of the middle sleeve 43a is fixedly assembled with the chain wheel 5.

In the embodiment, the resultant output middle shaft motor of the electric bicycle is directly inserted into a five-way of the bicycle through a shell 3 of the motor, two ends of the spindle are connected into pedal structures of the bicycle, the chain wheel 5 is assembled with a bicycle chain transmission, and two ends of the spindle 21 are assembled with pedals 8. The power synthesis process of the motor is shown in fig. 4, when the electric power-assisted bicycle is ridden by using the motor, the pedal 8 is treaded to drive the mandrel 21 to rotate, the mandrel 21 transmits the rotation to the inner sleeve 41a of the resultant force assembly 4a, when the inner sleeve 41a rotates along the movement direction of the pedal 8 relative to the middle sleeve 43a, the torque of the inner sleeve 41a is unidirectionally output to the middle sleeve 43a, the detection structure in the motor detects the movement of the pedal 8, the output shaft of the motor 1 rotates to drive the outer sleeve 42a of the resultant force assembly 4a to rotate, the same torque of the outer sleeve 42a is unidirectionally output to the middle sleeve 43a, so that the auxiliary power generated by electric power and the pedal torque generated by manpower drive the chain wheel 5 to rotate together, and finally drive the electric bicycle to operate together.

In the operation process that this motor used, the pedal motion that is launched by the manpower, finally transmit chain wheel 5 through well cover 43a, and the rotational speed that produces in the manpower use or torsion change are detected the back by detection mechanism, just can start electric power, and then electric power passes through the output shaft of motor 1 and finally transmits chain wheel 5 through well cover 43a, and electric power plays the effect of supplementary riding at this moment. In the movement process, the transmission from the manpower to the chain wheel and the transmission from the electric power to the chain wheel are both one-way transmission, two torsion forces are not interfered with each other before being finally transmitted to the middle sleeve 43a of the fixed chain wheel 5, when the inner sleeve 41a is driven to move in the manual operation, the inner sleeve transmits the power to the middle sleeve 43a, the middle sleeve 43a is separated from the outer sleeve 42a due to the fact that the outer sleeve 42a is in one-way transmission to the middle sleeve 43a, the middle sleeve 43a moves independently, and after the motor is started by the electric power, the electric power can transmit the power to the chain wheel 5 assembled on the middle shaft only when the rotating speed of the outer sleeve 42a exceeds the middle sleeve 43 a. Thus, when the pedal 8 is pedaled by manpower alone, the outer casing 42a of the resultant force assembly 4a is completely disengaged together with the whole transmission structure and the motor 1, and the movement of the bicycle is not influenced, so that the movement of the whole bicycle is more free; when the motor 1 transmits the rotation speed of the outer sleeve 42a to the inner sleeve 41a more than the pedaling force, the inner sleeve 41a and the spindle 11 assembled therein are separated from the middle sleeve 43a, no unnecessary loss of electric power is generated during the transmission process, and the electric energy utilization rate is higher.

In this motor, the resultant force assembly 4a directly synthesizes power transmitted in both directions of manpower and electric power. The two groups of rotating assemblies and the two groups of clutch transmission structures are simultaneously and respectively realized, the integrated resultant force assembly structure is simultaneously used as a combined piece for finally transmitting manpower and electric power through the middle sleeve, the structure is greatly simplified compared with the two traditional independent clutch structures, and no interference is generated between the two clutch structures. In addition, the part structure is similar to the one-way bearing, the one-way bearing can be integrally assembled and installed, the whole assembly of the motor is more convenient, the structure is greatly simplified compared with the traditional structure, the part can be conveniently processed in batches, the part is processed in a large batch by a professional company, the cost of the part can be greatly reduced, meanwhile, the whole assembly error can also be greatly reduced, the whole accumulation error of the motor for assembling the part is finally lower, and the service life of the motor is effectively prolonged. And the resultant force assembly 4a is an easily-worn element due to the rolling piece 44a and the clutch piece 45q, so that the integral assembly can be directly and integrally replaced when damaged, and the maintenance and the use are more convenient.

In the transmission design of the motor 1 for transmitting power to the resultant force assembly 4a, as shown in fig. 1, the output shaft end of the motor 1 is equipped with an output gear 11, and the outer sleeve 42a is designed with a transmission gear 46a engaged with the output gear 11. The diameter of the output gear 11 is smaller than that of the transmission gear 46a, so that when power is transmitted from the output gear 11 to the transmission gear 46a, the output rotational speed from the power module 1 can be further reduced for speed reduction transmission. In this embodiment, the drive gear 46a is integrally formed with the outer sleeve 42 a. Therefore, the assembly structure between the transmission gear 46a and the resultant force assembly 4a is further saved, the whole transmission process is higher in precision and higher in transmission efficiency through integral processing, and the noise in the transmission process can be effectively reduced.

As shown in fig. 1, the spindle 21 is in transmission connection with the inner sleeve 41 through a torque sleeve 22, the spindle 21 penetrates through the torque sleeve 22, an inner wall of one end of the torque sleeve 22 is in transmission connection with the spindle 21, an outer wall of the other end of the torque sleeve 22 is in transmission connection with the inner sleeve 41, and a torque sensing component is assembled on the torque sleeve 22. In this embodiment, the torque sleeve 22 is in transmission connection with the spindle 21 through a left limit structure, and the torque sleeve 22 is in transmission connection with the inner sleeve 41a of the resultant force assembly 4a through a right key, so that the torque force output from the pedal 8 is transmitted to the right side through the left side of the torque sleeve, the torque force acts on the whole length direction of the torque sleeve 22, and the deformation of the whole torque sleeve 22 is larger, thereby being more convenient for detection.

The chain wheel 5 is connected with the right side of the middle sleeve 43a on the resultant force component 4a in an assembling way, and can be directly assembled or assembled through other elements in an assembling way. In this embodiment, the chain wheel 5 is fixedly connected to the right end of the middle sleeve 43a through a connecting piece 51a, and a through hole is formed in the middle of the connecting piece 51 a. The chain wheel 5 is connected through the connecting piece 51a, and in the embodiment, the connecting piece 51a and the chain wheel 5 are connected through a plurality of bolts in a locking mode. The use of connecting piece 51a makes in the motor structure of different models, can use the same chain wheel 5, only needs concrete design the concrete structure of connecting piece 51a can, greatly reduced the structure of change piece, conveniently carry out a large amount of spare parts production to chain wheel 5 simultaneously, reduced the production risk.

In embodiment 1, as shown in fig. 1 and 2, the left sides of the inner sleeve 41a, the outer sleeve 42a and the middle sleeve 43a are flush, and the right end of the middle sleeve 43a extends, i.e. the right side of the middle sleeve 43a extends out of the position of the right side section of the inner sleeve 41a and the outer sleeve 42 a. And an external thread is processed on the outer wall of the right end of the middle sleeve 43a, and an internal thread meshed with the external thread is designed on the through hole of the connecting piece 51 a. Namely, the connecting piece 51a is screwed and assembled on the right side of the middle sleeve 43a, so that the toothed disc 5 can be assembled by directly rotating the connecting piece 51a for assembling the toothed disc 5, and the locking direction of the connecting piece 51a relative to the middle sleeve and the pedaling direction of the pedal 8 can be correspondingly designed, so that the connecting piece 51a on the toothed disc 5 is screwed on the right side of the middle sleeve 43a more firmly during pedaling.

In embodiment 1, the resultant force component 4a is assembled on the right side of the housing 3, the output gear 11 is assembled at the right output end of the motor 1, the transmission gear 46a is integrally formed on the right side of the outer sleeve 42a of the resultant force component 4a, the transmission gear 46a is designed on the right side of the outer sleeve 42a, and the space outside the left side of the outer sleeve 42a can be set aside for assembling other structures. The left side of the shell 3 is hermetically assembled with a cover, and a round hole is processed in the middle of the cover 31, so that the mandrel 21 and other structures can conveniently extend out. The middle round hole of the cover 31a is connected with the outer wall of the middle sleeve 43a through a bearing 32a, the cover 31a and the connecting piece 51a are both in the shape of an annular panel with the middle protruding rightwards, and the right side of the cover 31a protrudes deeply into the left side of the connecting piece 51a, so that the whole structure is more compact. The middle of the inner wall of the left end of the connecting piece 51a and the outer wall of the right end of the cover 31a is hermetically assembled through a waterproof ring 9, and the connecting piece 51a and the mandrel 21 are hermetically assembled through a dustproof cover 10. In this embodiment, the connector 51a not only functions to connect the middle sleeve 43a and the crankset 5, but also functions as a dust-and water-proof type closing cover plate of the connector 51 a. The middle sleeve 43a is combined with the right end face of the shell 3, the 4a resultant force assembly and other elements are sealed by sealing elements such as the waterproof ring 9, the dustproof cover 10 and the like, the transmission structure is integrally sealed, and the dustproof and waterproof effects are achieved, so that the service life of the transmission structure can be effectively prolonged. At the same time, the structural design of the threaded connection of the middle sleeve 43a allows the thickness of the middle sleeve 43a to be designed thinner, so that the overall weight of the resultant force assembly 4a is greatly reduced.

Example 2

In embodiment 2, as shown in fig. 5, 6 and 7, the power module 1, the human-powered module 2 and the housing 3 are the same as those in embodiment 1, the assembly manner and the operation manner are the same, the transmission structure of the resultant force assembly 4b is the structure of the inner sleeve 41b, the outer sleeve 42b, the middle sleeve 43b, the rolling members 44b and the clutch members 45b, and the transmission principle of embodiment 2 is substantially the same as that of embodiment 1, so that the structure of this embodiment also has the advantages of outputting the resultant force of human power and electric power in embodiment 1, for example, in fig. 7, when the inner sleeve 41b and the outer sleeve 42b rotate in the direction of the arrow relative to the middle sleeve 43b, the middle sleeve 43b can be driven to rotate, so that the resultant force output is realized, the operation manner is the same as that in embodiment 1, and the same structure and corresponding advantages will not be described repeatedly herein.

The transmission structure of the resultant force component 4b is similar, but the parts of the resultant force component 4b, which are assembled with the crankset 5, adopt different assembling modes. In embodiment 2, the right end face of the middle sleeve 43b is provided with two or more threaded holes uniformly distributed along the axis of the middle sleeve 43b, the connecting piece 51b is provided with a through hole corresponding to the threaded holes, and the connecting piece 51b is fixed on the right side of the middle sleeve 43b through a bolt 52 b. In this embodiment, the outer end faces of the inner sleeve 41b, the outer sleeve 42b and the middle sleeve 43b on the resultant force assembly 4b all adopt the same plane, such a structural design makes the structural design on both sides simpler, for example, the right side of the connecting piece 51b is designed to be smoother, which facilitates the design and processing of parts, meanwhile, the connecting piece 51b is locked and connected with the right end of the middle sleeve 43b through evenly distributed bolts, so that the torsion transmission between the connecting piece 51b and the middle sleeve 43b is more uniform, and at the same time, the structure uses the whole end face on the right side of the middle sleeve 43b as a positioning face, so that the perpendicularity between the crankset 5 assembled on the connecting piece 51b and the mandrel 21 is more easily ensured.

Embodiment 2 specifically designs, the resultant force assembly 4b is assembled on the right side of the housing 3, the output gear 11 is assembled on the right output end of the motor 1, the transmission gear 46b is integrally machined on the right side of the outer sleeve 42b of the resultant force assembly 4b, the housing 3 is hermetically assembled on the left side of the housing 31b, a circular hole is machined in the middle of the cover 31b, the circular hole in the middle of the cover 31b is hermetically assembled with the outer wall of the outer sleeve 42b of the resultant force assembly 4b through a waterproof ring 9, the through hole in the middle of the connecting piece 51b is hermetically assembled with the right end of the spindle 21 through an oil seal 7, and the outer ring of the connecting piece 51b is hermetically assembled with the outer ring of the outer sleeve 42 b. In this embodiment, the connector 51b seals the entire right side of the resultant force assembly 4b through the oil seal 7 and the waterproof ring 9, and simultaneously cooperates with the cover 31b, so that the resultant force assembly 4b and the transmission structure between the electric power and the resultant force assembly 4b are completely sealed, and external water and dust can be effectively prevented from entering the resultant force assembly, so that the service life of the product is longer. In this embodiment, the connector 51b functions not only to connect the middle sleeve 43b and the crankset 5, but also to function as a dust-and water-proof type closing cover plate for the connector 51 b.

Example 3

In embodiment 3, as shown in fig. 8, 9 and 10, the power module 1, the manual module 2 and the housing 3 are the same as those of embodiment 1, the assembly method and the operation method are the same, the transmission structure of the resultant force assembly 4c is the structure using the inner sleeve 41c, the outer sleeve 42c, the middle sleeve 43c, the rolling members 44c and the clutch members 45c, the outer sleeve 42b is also integrally formed with the transmission gear 46b, the structure and the transmission principle are substantially the same as those of embodiment 1 and embodiment 2, and the description thereof will not be repeated.

In this embodiment, the fitting structure of the middle housing 43c and the connector 51c and the cover 31c is substantially the same as that of embodiment 2. In this embodiment, the right end of the middle sleeve 43c is designed with a stepped shaft with a reduced outer diameter, a shoulder 431c is correspondingly arranged on the left side of the stepped shaft, a threaded hole is machined in the shoulder 431c, and the connecting piece 51c is in limited fit on the stepped shaft at the right end of the middle sleeve 43c through the shoulder 431 c. The stepped shaft on the right side of the middle sleeve 43c is used for positioning the connecting piece, and the shaft shoulder 431c plays a role in limiting in the axial direction, so that the connecting piece 51c and the chain wheel 5 on the connecting piece can be more accurately assembled, the assembly is more firm, and the using effect is better.

In the embodiments 1 and 2, as shown in fig. 1 to 3 and 4 to 5, the rolling members (44 a, 44 b) all use steel balls, the inner walls of the outer sleeves (42 a, 42 b), the outer walls of the inner sleeves (41 a, 41 b) and the inner and outer walls of the middle sleeves (43 a, 43 b) are respectively provided with positioning grooves for accommodating the corresponding steel balls, and the clutch members (45 a, 45 b) are eccentric wedges. The structure enables the middle sleeves (43 a and 43 b) to respectively form one-way bearing structures with the inner sleeves (41 a and 41 b) and the outer sleeves (42 a and 42 b), so that more manufacturers can produce the structures, and the resultant force assembly is more convenient to process.

In examples 1 and 3, as shown in fig. 1 and 8, two parallel cranksets 5 are fitted to the connecting members (51 a, 51 c). Thus, in both embodiments, the two crankshafts can be used to design more gear positions on the bicycle.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.