Bicycle

Abstract

The present application relates to the field of transmission design, in particular to a bicycle, the transmission mechanism of the bicycle comprising: a main shaft, a power input, a planetary gear assembly and a one-way transmission assembly, the planetary gear assembly being arranged on the main shaft; the one-way transmission assembly being sleeved on the main shaft, the one-way transmission assembly being connected with the power input and the planetary gear assembly, the one-way transmission assembly enabling the planetary gear assembly to be driven by the power input to make one-way transmission; wherein the planetary gear assembly is used for transmission connection with a power output and for changing the rotating speed of the power input transmitted to the power output; the power input being capable of making sectorial reciprocating motion with the main shaft as the center to drive the power output to move. The one-way transmission assembly is arranged to enable the transmission mechanism to make sectorial rotary motion, thereby improving the transmission efficiency, the planetary gear assembly is used as the transmission assembly to effectively improve the transmission efficiency and transmission speed, and due to the structural characteristics of the planetary gear, the transmission mechanism is more compact in structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical transmission mechanism, in particular to a bicycle. BACKGROUND

[0002] The existing bicycle or some vehicles generally uses a circular motion transmission mechanism as a power source, but such transmission mechanism has the disadvantages of low transmission efficiency and slow speed due to the ordinary gear assembly transmission. In order to increase the speed of the bicycle or vehicle, a variable speed assembly is generally added, which increases the size of the transmission mechanism and greatly affects the structural design of the bicycle. Moreover, the circular motion transmission mechanism consumes part of the kinetic energy when the pedal assembly rotates from the lowest point to the highest point, which affects the transmission efficiency. Therefore, it is necessary to design a transmission mechanism to make the transmission efficiency and speed of the bicycle or vehicle higher and the structure more compact. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a transmission mechanism and a bicycle to solve the problems of low transmission efficiency and slow speed of the existing transmission mechanism.

[0004] In a first aspect, the technical solution adopted by the present application to solve its technical problem is: a transmission mechanism, comprising: a main shaft, a power input, a planetary gear assembly and a one-way transmission assembly, the planetary gear assembly is arranged on the main shaft; the one-way transmission assembly is sleeved on the main shaft, the one-way transmission assembly is connected with the power input and the planetary gear assembly, and the one-way transmission assembly makes the planetary gear assembly one-way transmission under the driving of the power input; wherein the planetary gear assembly is used for transmission connection with a power output, and is used for changing the rotating speed of the power input transmitted to the power output; the power input can make a sector reciprocating motion around the main shaft to drive the power output to move.

[0005] Further, the planetary gear assembly comprises: a first planet carrier, a first planet wheel set, a ring gear and a first sun gear, the first planet carrier is connected with the one-way transmission assembly; the first planet wheel set is arranged on the first planet carrier; the ring gear is engaged with the first planet wheel set; the first sun gear is arranged on the main shaft and is in transmission connection with the first planet wheel set, and is used for transmission connection with the power output.

[0006] Further, the one-way transmission assembly is a one-way bearing, which is divided into an inner ring and an outer ring, wherein the inner ring is fixedly connected with the one-way transmission assembly and the first planet carrier, and the outer ring is connected with the power input.

[0007] Further, the one-way transmission assembly is a ratchet assembly, the ratchet assembly comprises a ratchet wheel, a pawl disc, a pawl, the pawl is arranged on the pawl disc, the pawl is engaged with the ratchet wheel, wherein the pawl disc is fixedly connected with the power input, and the ratchet wheel is fixedly connected with the first planet carrier.

[0008] Further, the ratchet assembly further comprises an abutting piece, the abutting piece is fixed on the ring gear, and the pawl is pressed down by the abutting piece to disengage from the engagement with the ratchet teeth when rotating to the abutting piece, so that the ratchet wheel can rotate freely.

[0009] Further, the application further comprises a shaft sleeve, the shaft sleeve is sleeved on the main shaft and connected with the one-way transmission assembly; another one-way transmission assembly, the another one-way transmission assembly is sleeved on the shaft sleeve, the another one-way transmission assembly is connected with another power input, and is used to drive the planetary gear assembly to rotate in one direction under the driving of the another power input.

[0010] In the second aspect, the application further provides a bicycle, which comprises a frame, a front wheel and a rear wheel, and further comprises the transmission mechanism as described above, the power input is a pedal assembly, the transmission mechanism is in transmission connection with the front wheel and / or the rear wheel, and the pedal assembly is used to drive the front wheel and / or the rear wheel to rotate.

[0011] Further, the application further comprises a reset mechanism, the reset mechanism is connected with the pedal assembly to reset the pedal assembly after driving the pedal assembly to rotate.

[0012] Further, the reset mechanism is an elastic piece, one end of the elastic piece is connected with the frame, and the other end of the elastic piece is connected with the pedal assembly.

[0013] Further, the reset mechanism is a foot cover, the foot cover is arranged on the pedal assembly.

[0014] The application has the advantages that the transmission mechanism can make fan-shaped rotary motion through the one-way transmission assembly, the consumed kinetic energy when the ordinary circular motion transmission rotates from the lowest point to the highest point can be reduced, the transmission efficiency is improved, further, the planetary gear assembly is used as the transmission assembly, the transmission efficiency can be further improved, and the transmission speed from the power input to the power output is greatly increased due to the larger transmission ratio of the planetary gear than that of the ordinary gear, so that the transmission efficiency and speed of the bicycle or other equipment using the transmission mechanism can be effectively improved, and the structure of the transmission mechanism can be made more compact due to the structural characteristics of the planetary gear. BRIEF DESCRIPTION OF DRAWINGS

[0015] The specific embodiments of the application will be further described in detail below with reference to the drawings and examples, and the drawings show:

[0016] Figure 1 is the overall schematic diagram of the transmission structure of the present application;

[0017] Figure 2 is the exploded schematic diagram of the transmission structure of the present application;

[0018] Figure 3 is the schematic diagram of the structure of the gear ring and the mounting seat of the present application;

[0019] Figure 4 is the front view schematic diagram of the one-way bearing;

[0020] Figure 5 is the schematic diagram of the structure of another view of the one-way bearing;

[0021] Figure 6 is the schematic diagram of the structure of the ratchet assembly;

[0022] Figure 7 is the schematic diagram of the structure of another state of the ratchet assembly;

[0023] Figure 8 is the schematic diagram of the structure of an embodiment of the transmission structure of the present application;

[0024] Figure 9 is the schematic diagram of the structure of the transmission mechanism of the present application with the pedal assembly;

[0025] Figure 10 is Figure 9 the overall schematic diagram of the structure applied to the bicycle;

[0026] Figure 11 is the schematic diagram of another embodiment of the transmission mechanism of the present application with the pedal assembly;

[0027] Figure 12 is Figure 11 the overall schematic diagram of the structure of the transmission structure applied to the bicycle;

[0028] Figure 13 is the schematic diagram of the structure of a reset mechanism in the bicycle;

[0029] Figure 14 is Figure 13 the enlarged schematic diagram of I in the middle.

[0030] In the figure: 1, main shaft; 2, power input; 3, planetary gear assembly; 31, first planet carrier; 32, first planetary gear set; 33, ring gear; 331, mounting seat; 34, first sun gear; 35, second planet carrier; 36, second planetary gear; 37, second sun gear; 4, one-way transmission assembly; 41, one-way bearing; 42, ratchet assembly; 421, ratchet; 422, pawl disc; 423, pawl; 424, abutting piece; 5, power output; 6, shaft sleeve; 7, pedal assembly; 8, reset mechanism; 81, elastic member; 811, adjusting part; 82, foot sleeve. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. The preferred embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0032] The present application provides a transmission mechanism, as shown in Figure 1 which comprises: a main shaft 1, a power input 2, a planetary gear assembly 3 and a one-way transmission assembly 4, the planetary gear assembly 3 is arranged on the main shaft 1; the one-way transmission assembly 4 is sleeved on the main shaft 1, the one-way transmission assembly 4 is connected with the power input 2 and is in transmission connection with the planetary gear assembly 3, and the one-way transmission assembly 4 makes the planetary gear assembly 3 one-way transmission under the driving of the power input 2; wherein the planetary gear assembly 3 is used for transmission connection with a power output 5, and is used for changing the rotation speed of the power input 2 transmitted to the power output 5; the power input can do sector reciprocating motion with the main shaft as the center to drive the power output to move.

[0033] By setting the one-way transmission assembly 4, the transmission mechanism can do sector rotation, which can reduce the kinetic energy consumed by the ordinary circular motion transmission from the lowest point to the highest point, and improve the transmission efficiency. Further, using the planetary gear assembly 3 as the transmission assembly can further improve the transmission efficiency, and because the transmission ratio is larger than that of ordinary gears, the speed from the power input 2 to the power output 5 is greatly increased, so the transmission efficiency and speed of the bicycle or other equipment using the transmission mechanism can be effectively improved. Moreover, due to the structural characteristics of the planetary gear, the volume of the transmission mechanism can be reduced, which helps to make the transmission mechanism more compact.

[0034] In one embodiment, as shown in Figure 2 and Figure 3As shown, the planetary gear assembly 3 includes: a first planetary carrier 31, a first planetary gear set 32, a ring gear 33, and a first sun gear 34. The first planetary carrier 31 is connected to the one-way transmission assembly 4. The first planetary carrier 31 is fixedly connected to the bushing 6 or integrally formed. The first planetary gear set 32 ​​is mounted on the first planetary carrier 31. The ring gear 33 is connected to a mounting base 331, which is used to fix the ring gear 33. The ring gear 33 meshes with the first planetary gear set 32. The first sun gear 34 passes through the main shaft 1 and is connected to the first planetary gear set 32, and is also used to connect to the power output component 5. Furthermore, to increase the bicycle speed and meet riding requirements, a second set of planetary gears can be added. See also... Figure 2 To illustrate the structure of the two sets of planetary gears, which includes a second sun gear 37, a second planet carrier 35, and a second set of planetary gears 36, the second set of planetary gears 36 and the first set of planetary gears 32 share a gear ring 33. At this time, the second set of planetary gears 36 is set inside the gear ring 33 and meshes with the gear ring 33. The second sun gear 37 meshes with the first set of planetary gears 32 and is fixedly connected to the second planet carrier 35. This increases the rotational speed transmitted from the first planet carrier 31 to the first sun gear 34, and ultimately increases the rotational speed transmitted to the power output component 5.

[0035] In one embodiment, such as Figure 4 and Figure 5 As shown, the one-way transmission assembly 4 is a one-way bearing 41, which consists of an inner ring and an outer ring. The inner ring is fixedly connected to the one-way transmission assembly 4 and the first planetary carrier 31, while the outer ring is connected to the power input component 2. The one-way bearing 41 is a standard part, making it easy to procure and assemble.

[0036] In one embodiment, such as Figure 6 and Figure 7 As shown, the one-way transmission assembly 4 is a ratchet assembly 42, which includes a ratchet 421, a pawl disc 422, and a pawl 423. The pawl 423 is mounted on the pawl disc 422 and engages with the ratchet 421. The pawl disc 422 is fixedly connected to the power input component 2, and the ratchet 421 is fixedly connected to the first planetary carrier 31. The ratchet assembly 4232 is a standard part and is easy to procure and assemble.

[0037] In one embodiment, see Figure 7The ratchet 421 assembly 42 also includes an abutment 424, which is fixed on the toothed ring 33. When the pawl 423 rotates to the abutment 424, it is pressed down by the abutment 424 and disengaged from the ratchet teeth, so that the ratchet 421 can rotate freely. In existing bicycles with fan-shaped rotary transmission mechanisms, the wheel connected to the transmission mechanism rotates backward when it moves backward. However, due to different structural designs, such transmission mechanisms cannot rotate backward, thus preventing the bicycle from reversing. In this embodiment, the abutment member 424 is provided, enabling the transmission mechanism of the present invention to reverse. The reversing process of the transmission mechanism of the present invention is as follows: the power input member 2 rotates, causing the pawl 423 on the pawl disc 422 to rotate. When the pawl 423 rotates to the abutment member 424, it is pressed down by the abutment member 424 and disengaged from the ratchet teeth. As a result, the ratchet wheel 421 can rotate freely, and the power output member 5 can rotate freely. When re-engagement is required, the power input member 2 is rotated, causing the pawl 423 on the pawl disc 422 to rotate, causing the pawl 423 to disengage from the abutment member 424, and the pawl 423 resumes engagement with the ratchet teeth.

[0038] In one embodiment, see Figure 8 It also includes a bushing 6 and another one-way transmission assembly 4. The bushing 6 is fitted onto the main shaft 1 and connected to the one-way transmission assembly 4. The other one-way transmission assembly 4 is fitted onto the bushing and connected to another power input component 2, and is used to drive the planetary gear assembly 3 in one direction under the drive of the other power input component 2. By setting two one-way transmission assemblies 4, two power input components 2 can be set, so that the transmission mechanism can more easily alternate transmission, improve the riding experience, and increase riding efficiency.

[0039] A type of bicycle, see Figure 10 and Figure 12 It includes a frame, a front wheel, and a rear wheel, and also includes a transmission mechanism as described above. The power input component 2 is a pedal assembly 7. The transmission mechanism is connected to the front wheel and / or the rear wheel, and the pedal assembly 7 is used to drive the front wheel and / or the rear wheel to rotate. Figure 9 and Figure 10 As shown, in one embodiment applied to a bicycle, two pedal assemblies 7 are connected to two power input components 2 respectively, for cyclically driving the power output component 5. The power output component 5 is then connected to the front wheel of the bicycle, or to the rear wheel, or to both the front and rear wheels together, thereby driving the front wheel and / or the rear wheel to rotate and move forward. Figure 11 and Figure 12 The diagram shows another embodiment of the transmission mechanism of the present invention. In this embodiment, two pedal assemblies 7 are connected to two power input components 2 respectively, and their main shafts 1 are directly and coaxially fixedly connected to the front wheel or the rear wheel, thereby driving the front wheel or the rear wheel to rotate forward.

[0040] In one embodiment, see Figure 13 It also includes a reset mechanism 8, which is connected to the foot pedal assembly 7 to reset the foot pedal assembly after it rotates. In this embodiment, the transmission mechanism is a fan-shaped rotary transmission mechanism, so a reset mechanism 7 is needed to make the power input component 2 return to the starting end after rotating to the end end. By setting this transmission mechanism, the foot pedal assembly can be easily returned to the starting end.

[0041] In one embodiment, see Figure 14 The reset mechanism 8 is an elastic element 81, with one end connected to the frame and the other end connected to the pedal assembly 7. The pedal assembly 7 can be easily reset through the stretching and resetting of the elastic element 8. Furthermore, the elastic element is provided with an adjustment part 811, which is connected to the elastic element 8. Adjusting the position of the adjustment part 811 changes the elastic force of the elastic element 8. After prolonged use, the elastic force of the elastic element 8 may weaken; therefore, the adjustment part 811 is needed to adjust the elastic force of the elastic element 8 so that the elastic force of the elastic element 81 can complete the reset of the pedal assembly 7.

[0042] In one embodiment, see Figure 10 The reset mechanism 8 is a foot cover 82, which is mounted on the pedal assembly 7. In this embodiment, the foot cover 82 is directly mounted on the pedal assembly 7, allowing the pedal assembly 7 to be reset by the rider's foot. This implementation method is simple and cost-effective.

[0043] Specifically, embodiments of the present invention can also be applied to water bicycles, pedal boats, electric bicycles, scooters, and exercise bikes, as can be referred to... Figures 9-12 Applications to bicycles are not listed here. Any of the above-mentioned machines that use the transmission mechanism in this embodiment fall within the protection scope of this invention.

[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of the present invention.

Claims

1. A bicycle, characterized in that The transmission mechanism is connected with the front wheel and / or the rear wheel in a transmission mode. The transmission mechanism comprises: a main shaft; a power input component, which is a pedal assembly, used to drive the front wheel and / or the rear wheel to rotate; a planetary gear assembly arranged on the main shaft; a one-way transmission assembly arranged on the main shaft, connected with the power input component and the planetary gear assembly, and used to drive the planetary gear assembly in a one-way transmission mode under the drive of the power input component; The planetary gear assembly is used to be connected with a power output component in a transmission mode, and used to change the rotating speed of the power input component transmitted to the power output component; the power input component can make a sector reciprocating motion around the main shaft to drive the power output component to move; The planetary gear assembly comprises a first planet carrier, a first planet wheel set, a ring gear and a first sun gear, the first planet carrier is connected with the one-way transmission assembly, the first planet wheel set is arranged on the first planet carrier, the ring gear is engaged with the first planet wheel set, and the first sun gear is arranged on the main shaft and connected with the first planet wheel set in a transmission mode, and used to be connected with the power output component in a transmission mode; The one-way transmission assembly is a ratchet assembly, which comprises a ratchet wheel, a pawl disc and a pawl, the pawl is arranged on the pawl disc and engaged with the ratchet wheel, the pawl disc is fixedly connected with the power input component, and the ratchet wheel is fixedly connected with the first planet carrier; The ratchet assembly further comprises an abutting member fixed on the ring gear, and the pawl is pressed down by the abutting member to disengage from the engagement with the ratchet wheel when the pawl rotates to the abutting member, so that the ratchet wheel can rotate freely; The transmission mechanism further comprises a shaft sleeve arranged on the main shaft and connected with the one-way transmission assembly; The transmission mechanism can reverse, and the reversing process is as follows: the power input component rotates to drive the pawl on the pawl disc to rotate, the pawl is pressed down by the abutting member to disengage from the engagement with the ratchet when the pawl rotates to the abutting member, the ratchet wheel can rotate freely, and the power output component can also rotate freely; when it is needed to re-engage, the power input component is rotated to drive the pawl on the pawl disc to rotate, so that the pawl disengages from the abutting of the abutting member, and the pawl restores the engagement with the ratchet; Another one-way transmission assembly is arranged on the shaft sleeve, connected with another power input component, and used to drive the planetary gear assembly in a one-way transmission mode under the drive of the another power input component.

2. Bicycle according to claim 1, characterized in that A reset mechanism is connected with the pedal assembly to drive the pedal assembly to rotate and reset.

3. Bicycle according to claim 2, characterized in that The reset mechanism is an elastic member, one end of which is connected with the frame, and the other end of which is connected with the pedal assembly.

4. The bicycle of claim 2, wherein, The reset mechanism is a foot cover arranged on the pedal assembly.

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