CN111645803B - Internal differential transmission for bicycle - Google Patents
Internal differential transmission for bicycle Download PDFInfo
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- CN111645803B CN111645803B CN202010351256.2A CN202010351256A CN111645803B CN 111645803 B CN111645803 B CN 111645803B CN 202010351256 A CN202010351256 A CN 202010351256A CN 111645803 B CN111645803 B CN 111645803B
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- rotating body
- fixed shaft
- bicycle
- connecting member
- differential transmission
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/10—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with bevel gear wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides an internal differential speed changer for a bicycle, which comprises a driving body for transmitting manual driving force, a fixing piece for fixing a speed changing unit, the speed changing unit and a control part, wherein the speed changing unit changes the input motion of the driving body and then outputs the variable speed input by the driving body by a second rotating body or a fourth rotating body, the control part can move along the axial direction of a first fixed shaft and can control the connection and separation of the first rotating body and the second rotating body and the fixing piece and the connection and separation of the first rotating body and the fourth rotating body and the driving body in the moving process.
Description
Technical Field
The invention belongs to the technical field of bicycle speed changing equipment, and particularly relates to an inner differential speed changer for a bicycle.
Background
The bicycle is greatly convenient for people to travel, and people have higher requirements on the bicycle along with the development of production process improvement, science and technology, humanity and spirit and the like. The design and manufacture of the bicycle are continuously perfected, the structure and the process are increasingly reasonable, and the service performance is continuously improved. As bicycles emerge, speed changing bicycles have also begun to evolve. At present, derailleurs of bicycles are largely classified into a drum type outer derailleurs and a closed type inner derailleurs. The external speed variator is characterized in that chain wheels with different tooth numbers are arranged on the rear wheel of the bicycle, and the change of the transmission ratio is realized by matching a chain with the different chain wheels. However, the outer speed-changing transmission is exposed outside the bicycle and is easily corroded by rainwater, dust and oil dirt, so that the maintenance becomes complicated, the service life is short, and the appearance is not attractive. The internal transmission speed changing device is hidden in the shaft sleeve and protected by a plurality of layers of special sealing materials, so that rainwater, dust, oil dirt and the like cannot enter the shaft sleeve, and the sun exposure and the erosion of wind and rain are avoided, so that the shaft sleeve is not required to be maintained regularly, and the advantages of no maintenance, precision, durability, light weight and the like are realized.
The existing three-speed transmission in the bicycle takes a planetary gear train as a main body, due to structural design reasons, the speed increasing ratio is less than 2 in theory, the reduction ratio is greater than 0.5, the transmission ratio is limited to be greater on the premise of ensuring the manufacturing cost and the service performance in actual production, the speed increasing gear ratio can only be 1.4, the speed increasing effect caused by the speed reducing gear ratio can only be 0.7 is not strong in speed increasing effect, the climbing is strong in low speed, and the acceleration effect and the deceleration effect are not obvious in riding. The internal transmission taking the planetary gear train as the main body is limited by the limitation of the external dimension because the axes of all gears around are parallel to the hub shaft of the bicycle, and the modulus of the common gears is 0.8-1, so that the bending strength of the internal transmission is not high.
Disclosure of Invention
The invention aims to provide a bicycle internal differential transmission with a larger transmission ratio and stronger bending strength.
In order to achieve the above object, the present invention adopts a technical scheme that an inner differential transmission for a bicycle comprises:
The driving body is connected with the bicycle frame and is used for transmitting manual driving force;
The speed change unit comprises a first rotating body and a second rotating body which rotate around a first fixed shaft, a third rotating body which rotates around a second fixed shaft and a fourth rotating body which is fixedly connected with the second fixed shaft, wherein the fourth rotating body rotates around the first fixed shaft, the third rotating body is respectively connected with the first rotating body and the second rotating body in a transmission way, and the speed change unit changes the input motion of the driving body and then outputs the variable speed by the second rotating body or the fourth rotating body;
a fixing member for fixing the first rotating body and the second rotating body of the speed change unit;
A control part which can move along the axial direction of the first fixed shaft and can control the connection and separation of the first rotating body and the second rotating body and the fixed piece and the connection and separation of the first rotating body and the fourth rotating body and the driving body in the moving process;
the central axes of the first fixed shaft and the second fixed shaft are not parallel.
Further, the fixing piece comprises a first fixed shaft fixed on the bicycle frame, a first connecting component used for connecting the first fixed shaft and the first rotating body, and a second connecting component used for connecting the first fixed shaft and the second rotating body.
Further, the first connecting component and the second connecting component are fixedly connected with the first fixed shaft.
Further, a third connecting part is arranged between the driving body and the first rotating body, a fourth connecting part is arranged between the driving body and the fourth rotating body, the third connecting part is used for connecting the driving body and the first rotating body, and the fourth connecting part is used for connecting the driving body and the fourth rotating body.
Further, concave parts and convex parts which are matched with each other are arranged between the first rotating body and the first connecting part, between the second rotating body and the second connecting part, between the third connecting part and the first rotating body and between the fourth connecting part and the fourth rotating body.
Further, the control part comprises a trigger part which can move along the axial direction of the first fixed shaft, and the trigger part is respectively contacted with the first connecting part, the second connecting part, the third connecting part and the fourth connecting part in the moving process, so that the first rotating body and the first connecting part, the second rotating body and the second connecting part, the third connecting part and the first rotating body and the fourth connecting part and the fourth rotating body are separated in sequence.
Further, the triggering member includes cam surfaces matched with the first, second, third and fourth coupling members, and when the first, second, third and fourth coupling members are in contact with the cam surfaces, the first, second, third and fourth coupling members are separated from the corresponding rotating bodies, respectively.
Furthermore, the third rotating body is a bevel gear connecting mechanism at the joint of the third rotating body and the first rotating body and the second rotating body.
Further, the first rotating body and the second rotating body are in direct contact.
Further, the speed changing unit, the fixing piece and the control part are all arranged in the shell, two ends of the shell are respectively connected with the second rotating body and the fourth rotating body through one-way connecting structures, and the one-way connecting structures comprise clamping grooves formed in the inner wall of the shell and clamping claws which are arranged on the outer sides of the second rotating body and the fourth rotating body and matched with the clamping grooves.
Compared with the prior art, the differential gear train formed by the first rotating body, the second rotating body, the third rotating body and the fourth rotating body is taken as a main body, so that the external dimension can be met, the modulus of the gear can be increased, the bending strength is greatly enhanced, and the service life of the transmission is prolonged.
Drawings
FIG. 1 is a disassembled perspective view of the internal structure of an internal differential transmission for a bicycle;
FIG. 2 is a disassembled perspective view of the stationary member and the control portion of the internal differential transmission for a bicycle;
FIG. 3 is a disassembled perspective view of the drive body in the internal differential transmission for a bicycle;
FIG. 4 is a cross-sectional view of the transmission unit in the internal differential transmission for a bicycle;
FIG. 5 is a disassembled perspective view of the transmission unit in the internal differential transmission for a bicycle;
FIG. 6 is a cross-sectional view of the internal differential transmission for a bicycle at one of the angles;
FIG. 7 is a cross-sectional view of an internal differential transmission for a bicycle at another angle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
Referring to fig. 1, an internal differential transmission for a bicycle includes a mount 4, a drive body 6, a transmission unit 3, a control portion 5, a housing 7, a first connecting member 8, a second connecting member 9, a third connecting member 10, a fourth connecting member 11, a left fastener 12, a right fastener 13, a left dust cover 14, and a right dust cover 15.
Referring to fig. 2, the fixing member 4 includes a first fixed shaft 41, a fixing sleeve 43 and a key 42, wherein the fixing sleeve 43 is keyed to the first fixed shaft 41 by the key 42 to limit radial rotation thereof, and threads 411 are provided on both sides of the first fixed shaft 41 to fix the first fixed shaft 41 to the bicycle frame by threaded connection.
Referring to fig. 3 and 7, the drive body 6 is the power input of the internal differential transmission, and includes a sprocket retainer 61, a sprocket 62 and a sprocket carrier 63. The sprocket retainer ring 61 is fastened on a groove 632 formed on the sprocket carrier along the circumferential direction to block the sprocket 62 from moving axially, and the convex portion 621 formed on the sprocket 62 is engaged with a concave portion 633 formed on the sprocket carrier to limit the radial rotation of the sprocket carrier, so that the design can make the assembly of the sprocket 62 and the sprocket carrier 63 more convenient.
Referring to fig. 4, 5 and 6, the speed changing unit 3 includes a first rotating body 31, a second rotating body 32, a third rotating body 33, a fourth rotating body 34 and a second fixed shaft 35 for supporting the third rotating body.
The first rotating body 31, the second rotating body 32 and the fourth rotating body 34 rotate around the first fixed shaft 41, the third rotating body 33 rotates around the second fixed shaft 35, the third rotating body 33 is limited to move axially on the second fixed shaft 35 through the screw 36, the shaft hole 351 is arranged in the middle of the second fixed shaft 35, the first fixed shaft 41 penetrates through the shaft hole 351, the shaft sleeve 37 is arranged between the first rotating body 31 and the second rotating body 32 and used for controlling the distance between the first rotating body 31 and the second rotating body 32 so as to facilitate assembly, and the axis of the second fixed shaft 35 is perpendicular to the 1 axis of the first fixed shaft 4 and intersects at a point.
The third rotating body 33 is disposed between the first rotating body 31 and the second rotating body 32, the second fixed shaft 35 is connected with the fourth rotating body 34 through a screw 36, the two are relatively static, and the rotation of the fourth rotating body 34 can drive the second fixed shaft 35 to rotate around the first fixed shaft 41, so as to drive the third rotating body 33 to revolve.
The connection parts of the first rotating body 31 and the third rotating body 33, and the connection parts of the second rotating body 32 and the third rotating body 33 are bevel gears in a meshed mode, the first rotating body 31 is meshed with the third rotating body 33, the second rotating body 32 is meshed with the third rotating body 33, the number of the third rotating bodies 33 is 2, and the third rotating bodies 33 are symmetrically arranged along the axis of the second fixed shaft 35, so that the axial force born by the second fixed shaft 35 can be more reasonable in stress.
The first rotating body 31 is in direct contact with the second rotating body 32, the second rotating body 32 comprises a second bevel gear 322, a first fixed shaft barrel 324 and a first nut 323, the second bevel gear 322 is connected with the first fixed shaft barrel 324 through a special-shaped shaft to limit radial rotation of the first fixed shaft barrel, the first fixed shaft barrel 324 is limited to move axially through the first nut 323, the first fixed shaft barrel 324 extends to the first rotating body 31 along the first fixed shaft 41 and is in direct contact with the first rotating body 31 through balls, and therefore, in order to control connection of the second rotating body 32 and the fixing piece 4 at one end of the first rotating body 31, the gear shifting structure design can be more reasonable.
Referring to fig. 2, the first connection member 8 and the second connection member 9 are disposed in the fixing sleeve 43 side by side in such a manner that a first gap 432 for accommodating the first connection member 8 and a second gap 433 for accommodating the second connection member 9 are formed in the fixing sleeve 43, the fixing sleeve 43 is fixed by the rotation shaft 21, the rotation shaft 21 passes through the first gap 432 and the second gap 433, the axis line of the rotation shaft 21 is parallel to the axis line of the first fixed shaft 41, the first connection member 8 is provided with a first connection hole 81, the second connection member is provided with a second connection hole 91, and the first connection member 8 and the second connection member 9 are rotated around the rotation shaft 21 in cooperation with the rotation shaft 21.
Referring to fig. 2 and 4, a return spring is provided on the side of the first connecting member 8, and is connected to the fixed sleeve 43 while being connected to the first connecting member 8, and the return spring brings the first end 83 of the second connecting member 8 away from the first fixed shaft 41, so that the first end 83 of the first connecting member 8 contacts the first protruding portion 311 on the inner side of the first rotating body 31, and at this time, the first fixed shaft 41 is connected to the first rotating body 31. The second connecting part 9 is provided with a first groove 94, the fixed sleeve 43 is provided with a second groove 434, the two grooves are commonly used for placing the clamp spring 22, the clamp spring 22 enables the front end 93 of the second connecting part 9 to be close to the second rotating body 32, and accordingly the front end 93 of the second connecting part 9 is contacted with the second convex portion 321 on the outer side face of the second rotating body 32, the first fixed shaft 41 is connected with the second rotating body 32, the number of the first connecting part 8 and the second connecting part 9 is 2, the first connecting part and the second connecting part 9 are symmetrically arranged on the fixed sleeve 43, and the other sides of the fixed sleeve 43 are equally arranged, so that the stress of the fixed sleeve 43 is uniform and reasonable.
Referring to fig. 3 and 4, the third connecting member 10 and the fourth connecting member 11 are disposed in the sprocket carrier 63 of the driving body 6 in parallel, in which a third gap 632 for disposing the third connecting member 10 and a fourth gap 631 for disposing the fourth connecting member 11 are formed in the sprocket carrier 63, the third connecting member 10 is fixed to the sprocket carrier 63 by the rotation shaft 20, a third groove 634 is formed in the sprocket carrier 63, the snap springs 23 are engaged with the upper surface of the third connecting member, the rotation shaft 20 passes through the third gap 631 and the fourth gap 632, the axes of the rotation shaft 20 are disposed in parallel with the axis of the first fixed shaft 41, the third hole 102 formed in the third connecting member 10 and the fourth hole 112 formed in the fourth connecting member 11 are engaged with the rotation shaft 20, and the third connecting member 10 and the fourth connecting member 11 are rotated around the rotation shaft 20. The third link 10 and the fourth link 11 are provided with a return spring on the side surfaces thereof, the return spring being connected to the sprocket carrier 63 while being connected to the third link 10 and the fourth link 11, the return spring being capable of bringing the first end 101 of the third link 10 and the first end 111 of the fourth link 11 into a raised state so that the first end 101 of the third link contacts the first convex portion 311 of the first rotating body 31 and the first end 111 of the fourth link 11 contacts the third convex portion 341 of the fourth rotating body 34 and is connected to the fourth rotating body 34.
Referring to fig. 2, the control part 5 includes a trigger part 51, a return spring 52, a traction rope and a circlip 53, wherein the trigger part 51 can move axially along the axis of the first fixed shaft 41 after being pulled by the traction rope (not shown in the figure), and one end of the return spring 52 is fixed at the head end of the trigger part 51 through the circlip 53, so as to realize automatic return in the absence of traction. The trigger member 51 is provided with a first inclined surface 511, a second inclined surface 513, a third inclined surface 514, a fourth inclined surface 516, a first convex portion 512, and a second convex portion 515, wherein the first convex portion 512 acts on the second end 84 of the first connecting member 8 and the front end 93 of the second connecting member 9, and the second convex portion 515 acts on the second end 104 of the third connecting member and the second end 114 of the fourth connecting member. The first, second, third and fourth connecting parts are respectively provided with an inclined plane which corresponds to the inclined plane of the triggering part, wherein the corresponding relation is that the first inclined plane 511 of the triggering part acts on the inclined plane 92 of the second connecting part, the second inclined plane 513 of the triggering part acts on the inclined plane 82 of the first connecting part, the third inclined plane 514 of the triggering part acts on the inclined plane 103 of the third connecting part, the fourth inclined plane 516 of the triggering part acts on the inclined plane 113 of the fourth connecting part, the convex part on the triggering part 51 can smoothly act on each connecting part when the triggering part moves axially, the reset spring acting on each connecting part enables the connecting part to be connected with each rotating body, and the convex part on the triggering part 51 can release the connecting relation when acting on each connecting part, so as to realize separation.
Referring to fig. 1 and 6, a first unidirectional connection is provided between the second rotating body 32 and the housing 7, in which a first claw 16 is provided on the second rotating body 32, a first clamp spring 18 is provided on the first claw 16, the clamp spring 18 rotates the front end of the claw 16 away from the first fixed shaft 41, a first clamping groove 71 is provided on the housing 7, the first claw 16 is clamped with the first clamping groove 71, and unidirectional connection is realized, when the rotation speed of the second rotating body 32 is greater than the rotation speed of the housing 7, the unidirectional connection acts, and when the rotation speed of the second rotating body 32 is less than the rotation speed of the housing 7, the unidirectional connection does not act. A second unidirectional connection is arranged between the fourth rotating body 34 and the shell 7, the connection mode is that a second clamping jaw 17 is arranged on the fourth rotating body 34, a second clamping spring 19 is arranged on the second clamping jaw, the front end of the clamping jaw 17 rotates in the direction away from the first fixed shaft 41 by the clamping spring 19, a second clamping groove 72 is formed in the shell 7, and the second clamping jaw 17 is clamped with the second clamping groove 72 to realize unidirectional connection. The unidirectional connection is effected when the rotational speed of the fourth rotation body 34 is greater than the rotational speed of the housing 7, and is not effected when the rotational speed of the fourth rotation body 34 is less than the rotational speed of the housing 7.
Referring to fig. 1 to 6, when the trigger member 51 is farthest from the speed change unit 3, the second end 84 of the first connecting member 8 is in contact with the trigger member protrusion 512, while the fixing member 4 is not connected with the first rotating body 31, the front end 93 of the second connecting member 9 is not in contact with the trigger member protrusion 512, the front end 93 of the second connecting member is moved toward the second rotating body 32 by the action of the snap spring 22 to contact 321 with the second protrusion on the outer side of the second rotating body 32, the fixing member 4 is connected with the second rotating body 32, the second rotating body 32 is caught, the second end 104 of the third connecting member is not in contact with the trigger member protrusion 515, while the first end 101 of the third connecting member is in contact with the first rotating body side protrusion 311, the driving body 6 is connected with the first rotating body 31, while the second end 114 of the fourth connecting member 11 is in contact with the trigger member protrusion 515, while the driving body 6 is not connected with the fourth rotating body 34, the power is transmitted from the driving body 6 to the third connecting member 10, the third connecting member 10 is transferred to the first rotating body 31, the first rotating body 31 drives the third rotating body 33 to rotate around the second fixed shaft 35 and the third rotating body 33 to the fourth rotating body 33 to rotate around the first rotating body 34 by the second fixed shaft 41, and the fourth rotating body 17 rotates around the fourth rotating body 34 to the fourth rotating body 41 through the first rotating body 17 and the first rotating body 34. The rotation speed of the fourth rotating body 34 is the same as the revolution speed of the third rotating body 33, and the rotation speed of the fourth rotating body 34 is half the rotation speed of the first rotating body 31, which is deceleration.
Referring to fig. 1-6, when the trigger member 51 approaches the shift unit 3 along the first fixed axis 41, the second end 84 of the first connecting member 8 contacts the trigger member protrusion 512 while the fixed member 4 is not connected to the first rotary body 31, the second connecting member slope 92 contacts the trigger member slope 511, and as the trigger member 51 continues to approach the shift unit, the front end 93 of the second connecting member contacts the trigger member protrusion 512 while the fixed member 4 is not connected to the second rotary body 32, the third connecting member slope 103 contacts the trigger member slope 514, and as the trigger member 51 continues to approach the shift unit, the third connecting member second end 104 contacts the trigger member protrusion 515, the third connecting member first end 101 moves away from the first rotary body 31 while the driving body 6 is not connected to the first rotary body 31, and as the trigger member 51 continues to approach the shift unit 3, the front end 93 of the second connecting member contacts the trigger member protrusion 512 while the front end 93 of the fourth connecting member 11 moves away from the second rotary body 34 under the action of the return spring, the third connecting member slope 103 contacts the trigger member slope 514, and as the third connecting member first end 104 contacts the fourth rotary body 6 to the fourth rotary body 34, and as the drive member 34 moves to the fourth rotary body 34 is connected to the fourth rotary body 7 through the fourth connecting member housing 17. The rotation speed of the fourth rotating body 11 is the same as the rotation speed of the driving body 6, and is constant at this time.
Referring to fig. 1 to 6, when the trigger member 51 continues to approach the speed changing unit 3 along the first fixed axis 41, the second end 84 of the first connecting member is separated from the trigger member protrusion 512, at this time, the first end 83 of the first connecting member 8 contacts the protrusion 311 of the inner side surface of the first rotating body 31 under the action of the return spring, the first rotating body 31 is connected to the fixed member 4, the first rotating body is locked, the front end 93 of the second connecting member contacts the trigger member protrusion 512, the second connecting member 9 is not connected to the second rotating body 32, the second end 104 of the third connecting member contacts the trigger member protrusion 515, the third connecting member 10 is not connected to the first rotating body 31, the second end 114 of the fourth connecting member is separated from the trigger member protrusion 515, the first end 111 of the fourth connecting member 11 contacts the protrusion 341 of the fourth rotating body 34 under the action of the return spring, at this time, the driving body 6 is connected to the fourth rotating body 34, the driving force is transmitted to the fourth connecting member 34 through the driving body 6, the fourth rotating body 34 drives the third rotating body 33 to revolve around the first fixed axis 41 and the second fixed axis 35, the second rotating body 33 rotates around the second rotating body 32, and the second rotating body 32 rotates around the speed twice the speed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An internal differential transmission for a bicycle, comprising:
The driving body is connected with the bicycle frame and is used for transmitting manual driving force;
The speed change unit comprises a first rotating body and a second rotating body which rotate around a first fixed shaft, a third rotating body which rotates around a second fixed shaft and a fourth rotating body which is fixedly connected with the second fixed shaft, wherein the fourth rotating body rotates around the first fixed shaft, the third rotating body is respectively connected with the first rotating body and the second rotating body in a transmission way, and the speed change unit changes the input motion of the driving body and then outputs the variable speed by the second rotating body or the fourth rotating body;
a fixing member for fixing the first rotating body and the second rotating body of the speed change unit;
A control part which can move along the axial direction of the first fixed shaft and can control the connection and separation of the first rotating body and the second rotating body and the fixed piece and the connection and separation of the first rotating body and the fourth rotating body and the driving body in the moving process;
The fixing piece comprises a first fixed shaft fixed on a bicycle frame, a first connecting part used for connecting the first fixed shaft with a first rotating body and a second connecting part used for connecting the first fixed shaft with a second rotating body, a third connecting part is arranged between the driving body and the first rotating body, a fourth connecting part is arranged between the driving body and the fourth rotating body, the third connecting part is used for connecting the driving body with the first rotating body, and the fourth connecting part is used for connecting the driving body with the fourth rotating body.
2. The bicycle inner differential transmission as set forth in claim 1, wherein the first and second connecting members are fixedly coupled to the first fixed axle.
3. The bicycle inner differential transmission as set forth in claim 1, wherein the first rotating body and the first connecting member, the second rotating body and the second connecting member, the third connecting member and the first rotating body, and the fourth connecting member and the fourth rotating body are provided with mutually mating concave portions and convex portions.
4. The bicycle inner differential transmission according to claim 1, wherein the control portion includes a trigger member movable in an axial direction of the first fixed shaft, the trigger member being in contact with the first, second, third and fourth connecting members, respectively, during movement thereof, so that the first rotating body is separated from the first connecting member, the second rotating body is separated from the second connecting member, the third connecting member is separated from the first rotating body, and the fourth connecting member is separated from the fourth rotating body.
5. The bicycle inner differential transmission as set forth in claim 4, wherein the triggering element includes cam surfaces that mate with the first, second, third and fourth coupling members, the first, second, third and fourth coupling members being separated from the corresponding rotating bodies, respectively, when the first, second, third and fourth coupling members come into contact with the cam surfaces.
6. The bicycle inner differential transmission as set forth in claim 5, wherein the third rotating body is a bevel gear connection at the connection with both the first and second rotating bodies.
7. The bicycle inner differential transmission as set forth in claim 6, wherein said first and second rotating bodies are in direct contact.
8. The bicycle inner differential transmission according to claim 1, further comprising a housing, wherein the speed changing unit, the fixing member and the control portion are disposed inside the housing, and both ends of the housing are respectively connected with the second rotating body and the fourth rotating body through a one-way connection structure, and the one-way connection structure comprises a clamping groove formed on an inner wall of the housing and a claw disposed outside the second rotating body and the fourth rotating body and matched with the clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010351256.2A CN111645803B (en) | 2020-04-28 | 2020-04-28 | Internal differential transmission for bicycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010351256.2A CN111645803B (en) | 2020-04-28 | 2020-04-28 | Internal differential transmission for bicycle |
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| CN111645803A CN111645803A (en) | 2020-09-11 |
| CN111645803B true CN111645803B (en) | 2025-02-18 |
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| CN113928469B (en) * | 2021-12-02 | 2024-06-04 | 广东洛梵狄智能科技有限公司 | Control mechanism and bicycle internal transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212605657U (en) * | 2020-04-28 | 2021-02-26 | 河南科技大学 | An internal differential transmission for bicycles |
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| JP3142246B2 (en) * | 1997-05-08 | 2001-03-07 | 株式会社シマノ | Interior gear hub for bicycle |
| KR19990031521U (en) * | 1997-12-31 | 1999-07-26 | 마재열 | Forward and reverse drive inverter of bicycle hub by intermittent friction method |
| KR100863350B1 (en) * | 2006-05-18 | 2008-10-15 | 강주신 | Bicycle pedal housing with shifting clutch |
| KR101422135B1 (en) * | 2012-08-09 | 2014-07-22 | (주)엠비아이 | Automatic transmission |
| JP2014081033A (en) * | 2012-10-16 | 2014-05-08 | Aisin Ai Co Ltd | Differential device |
| KR20150030129A (en) * | 2013-09-11 | 2015-03-19 | 변동환 | Continuously variable transmition |
| CN103978885B (en) * | 2014-04-17 | 2016-08-17 | 河南科技大学 | Load vehicle and hybrid power system thereof |
| US10427754B2 (en) * | 2017-04-12 | 2019-10-01 | Kuen-Chang LO | Continuous derailleur of bicycle |
| US10663052B2 (en) * | 2018-08-22 | 2020-05-26 | American Axle & Manufacturing, Inc. | Vehicle driveline having a vehicle driveline component with a dual disconnecting differential |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212605657U (en) * | 2020-04-28 | 2021-02-26 | 河南科技大学 | An internal differential transmission for bicycles |
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