Electronic back-pushing device and human-powered vehicle

Abstract

The application discloses an electronic rear shifting device and a human-powered vehicle. The electronic rear shifting device is installed on a vehicle frame and is in transmission connection with a gear shifting disc on the vehicle frame. The electronic rear shifting device comprises a base which is fixedly installed on the vehicle frame along an installation axis, two first pivot pins provided on the base, a movable assembly which is provided with two second pivot pins on one side and forms a parallelogram position with the two first pivot pins in position, and a chain guide which is in transmission connection with the gear shifting disc and is pivotally connected to the other side of the movable assembly, an outer connecting rod which is pivotally connected to one of the first pivot pins at one end and is pivotally connected to one of the second pivot pins at the other end, and a driving assembly which is pivotally connected to the other first pivot pin at one end and is pivotally connected to the other second pivot pin at the other end, and is configured to be rotationally driven around the axis of the first pivot pin. An included angle between the installation axis and the axis of the first pivot pin is 60-80 degrees. The electronic rear shifting device is obliquely arranged relative to the vehicle frame as a whole, so that the device can avoid the vehicle frame when gear shifting is performed.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and in particular to an electronic rear derailleur device and a human-powered vehicle. Background Technology

[0002] Human-powered vehicles with gear shifting functions, such as mountain bikes, primarily achieve gear shifting by shifting the chain between multiple sprockets of different diameters on the gearbox via a rear derailleur.

[0003] The existing electromechanical rear derailleur for bicycles disclosed in patent number 201410571813.6 uses the motion principle of a parallelogram linkage structure to realize the gear shifting process, but it is prone to interference with the frame during the entire gear shifting process. Summary of the Invention

[0004] The purpose of this invention is to provide an electronic rear derailleur device and a human-powered vehicle, which aims to solve the problem that existing electronic rear derailleur devices are prone to interference with the frame during gear shifting.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: providing an electronic rear derailleur device, mounted on a bicycle frame and connected to the derailleur chain on the frame, the electronic rear derailleur device comprising:

[0006] A base is fixedly installed on the vehicle frame along the mounting axis, and the base is provided with two first pivot pins;

[0007] The movable component has two second pivot pins on one side, which are positioned at the corners of a parallelogram with the two first pivot pins, and a chain guide that is pivotally connected to the transmission of the gear disc on the other side.

[0008] The outer connecting rod is pivotally connected at one end to a first pivot pin and at the other end to a second pivot pin;

[0009] A drive assembly, one end of which is pivotally connected to another first pivot pin and the other end of which is pivotally connected to another second pivot pin, is configured to be rotatably driven about the axis of the first pivot pin.

[0010] The angle between the mounting axis and the axis of the first pivot pin is 60 to 80 degrees.

[0011] Furthermore, the angle between the mounting axis and the axis of the first pivot pin is 65 to 75 degrees.

[0012] Furthermore, the movable component is configured to extend along the overall inclined path of the outer connecting rod and the drive component; a pivot portion is provided on the other side of the movable component, the axis of the pivot portion is parallel to the lateral direction of the vehicle, and the chain guide is pivotally connected to the pivot portion and perpendicular to the lateral direction of the vehicle.

[0013] Furthermore, the base includes a base body and a mounting part; the mounting part is located on the upper side of the base body, and the base is fixedly mounted to the vehicle frame along the mounting axis through the mounting part; the inner side of the base body is provided with a receiving groove, and the receiving groove is inclined downward along the vehicle's lateral direction; a first pivot pin pivotally connected to one end of the drive assembly is inclinedly disposed in the receiving groove; the drive assembly is located in the receiving groove on the inner side of the base and the inner space of the outer connecting rod, and an electronic control assembly is also provided in the receiving groove, the electronic control assembly being electrically connected to the drive assembly.

[0014] Furthermore, the drive assembly includes a housing and an electrically controlled gear assembly mounted inside the housing; the housing is configured as an internal connecting rod, with one end of the housing pivotally connected to a corresponding first pivot pin and the other end of the housing pivotally connected to a corresponding second pivot pin; the electrically controlled gear assembly is drively connected to the corresponding first pivot pin; the electrically controlled gear assembly includes a motor and a gear set; the motor and the gear set are connected and both are assembled in the housing; the output end of the gear set is pivotally connected to the first pivot pin.

[0015] Furthermore, the electronic control component is mounted on one side of the receiving slot parallel to the backward direction of the bicycle, and a protective part is provided on the base extending parallel to the forward direction of the bicycle, the protective part overlapping the outer part of the electronic control component.

[0016] Furthermore, the electronic control assembly includes a control box assembly and a battery component. The control box assembly is fixedly installed inside the base and electrically connected to the drive assembly. The battery component is detachably snapped into the base and electrically connected to the control box assembly. The protective part partially overlaps with the battery component, and the overlapping surface area accounts for 1 / 5 to 1 / 2 of the surface area of ​​the battery component.

[0017] Furthermore, a return torsion spring is fitted on the second pivot pin pivotally connected to the other end of the outer connecting rod, and the return torsion spring elastically abuts against and applies force to the second pivot pin pivotally connected to the other end of the drive assembly.

[0018] Furthermore, a swing arm and a stabilizing torsion spring are sleeved on the first pivot pin pivotally connected to one end of the drive assembly. The swing arm is configured to rotate and swing synchronously with the drive assembly. One end of the stabilizing torsion spring is press-fitted onto the swing arm, and the other end of the stabilizing torsion spring is connected to the base. The return direction of the stabilizing torsion spring is consistent with the return direction of the return torsion spring.

[0019] This invention also provides a human-powered vehicle, which includes the electronic rear derailleur device described above.

[0020] This invention provides an electronic rear derailleur device and a human-powered vehicle. The electronic rear derailleur device is mounted on the frame and is driven by the derailleur's gear on the frame. The electronic rear derailleur device includes: a base, fixedly mounted on the frame along the mounting axis, with two first pivot pins on the base; a movable component, with two second pivot pins on one side and a chain guide pivotally connected to the derailleur's gear on the other side; an outer connecting rod, with one end pivotally connected to one of the first pivot pins and the other end pivotally connected to one of the second pivot pins; and a drive component, with one end pivotally connected to another first pivot pin and the other end pivotally connected to another second pivot pin, the drive component being configured to rotate around the axis of the first pivot pin; wherein the angle between the mounting axis and the axis of the first pivot pin is 60 to 80 degrees. The electronic rear derailleur of this invention is fixedly mounted on the frame via a base. The outer link and drive assembly rotate as relative double links of a parallelogram link, thereby driving the movable component and chain guide to move. By setting the angle between the mounting axis and the axis of the first pivot pin to 60-80 degrees, the entire parallelogram link moves both laterally relative to the vehicle and tilts downwards in the horizontal direction, thus avoiding structural interference between the electronic rear derailleur and the vehicle during gear shifting. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural diagram of the electronic rear derailleur device provided in an embodiment of the present invention;

[0023] Figure 2 A three-dimensional structural schematic diagram of the electronic rear derailleur device provided in an embodiment of the present invention from another angle;

[0024] Figure 3 This is a partial structural schematic diagram of the electronic rear derailleur device provided in an embodiment of the present invention;

[0025] Figure 4 Provided for embodiments of the present invention Figure 3 A schematic diagram of the decomposed structure;

[0026] Figure 5 Provided for embodiments of the present invention Figure 4 A schematic diagram of a partial structure;

[0027] Figure 6 This is a schematic diagram of the driving principle structure of the driving component provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the base provided in an embodiment of the present invention.

[0029] Explanation of the markings in the image:

[0030] 1. Base; 11. Base body; 111. First outer pivot pin; 112. First inner pivot pin; 113. Receiving groove; 114. Swing arm; 115. Stabilizing torsion spring; 12. Mounting part; 13. Protective part;

[0031] 2. Moving component; 21. Second outer pivot pin; 22. Second inner pivot pin; 23. Pivot joint; 24. Return torsion spring;

[0032] 3. External connecting rod;

[0033] 4. Drive assembly; 41. Upper shell; 42. Lower shell; 43. Motor; 44. Gear set;

[0034] 5. Chain guide;

[0035] 6. Electronic control components; 61. Control box assembly; 62. Battery components;

[0036] 7. Rod body. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0039] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0041] Combination Figure 1-4 This invention provides an electronic rear derailleur device; it is mounted on the frame and is connected to the derailleur gear on the frame.

[0042] The electronic rear derailleur device of this invention includes: a base 1, a movable component 2, an outer connecting rod 3, and a drive component 4; the base 1 is fixedly mounted on the frame along the mounting axis A, and the base 1 is provided with two first pivot pins (i.e., a first outer pivot pin 111 and a first inner pivot pin 112); the movable component 2 is provided with two second pivot pins (i.e., a second outer pivot pin 21 and a second inner pivot pin 22) on one side and forms a parallelogram position with the two first pivot pins in position; the other side of the movable component 2 is pivotally connected to a chain guide 5 that is connected to the derailleur gear (not shown in the figure); one end of the outer connecting rod 3 is pivotally connected to the first outer pivot pin 111, and the other end of the outer connecting rod 3 is pivotally connected to the second outer pivot pin 21; one end of the drive component 4 is pivotally connected to the first inner pivot pin 112, and the other end of the drive component 4 is pivotally connected to the second inner pivot pin 22. The drive component 4 is configured to be able to rotate around the axis of the first inner pivot pin 112; wherein, the included angle between the mounting axis A and the axis B of the first pivot pin is 60 to 80 degrees.

[0043] In this embodiment, the base 1 is fixedly mounted to the frame along the mounting axis A (i.e., substantially parallel to the horizontal direction), so that the entire electronic rear derailleur is fixedly attached to the frame. The base 1, movable component 2, outer link 3, and drive component 4 are pivotally connected by two first pivot pins and two second pivot pins, thus constructing a parallelogram linkage mechanism. The inclination angles of the two first pivot pins and the two second pivot pins are the same to ensure the mobility of the parallelogram linkage mechanism. Therefore, when the drive component 4 rotates around the axis of the first inner pivot pin 112, it can drive the entire parallelogram linkage mechanism to move. With the 60-80 degree angle between the mounting axis A and the axis B of the first pivot pin, the entire parallelogram linkage can move in both the lateral direction of the vehicle and tilt downwards in the horizontal direction, thereby avoiding structural interference between the electronic rear derailleur and the vehicle when shifting gears.

[0044] For ease of understanding, such as Figure 1 and Figure 2Taking the position of the illustrated rod 7 (i.e., the position where it will interfere with the frame) as an example, it can be seen that the angle between the mounting axis A and the axis B of the first pivot pin determines the direction of movement of the entire parallelogram linkage mechanism. If the mounting axis A is perpendicular to the axis B of the first pivot pin, the entire parallelogram linkage will move parallel to the horizontal plane in the lateral direction of the vehicle, which is prone to interference with rod 7. Therefore, sufficient movement space needs to be reserved for the electronic rear derailleur device. However, in actual construction, the various structures are often quite compact, and it is impossible to reserve too much movement space. Therefore, it is necessary to solve the problem of avoiding structural interference between the electronic rear derailleur device and the vehicle when it moves within a limited movement space. In this regard, this embodiment improves the angle between the mounting axis A and the axis B of the first pivot pin, setting the angle between the mounting axis A and the axis B of the first pivot pin to 60-80 degrees, so that the entire parallelogram linkage mechanism can move in the lateral direction of the vehicle while also tilting downwards in the horizontal direction (i.e., Figure 1 The center is tilted towards the space below the rod 7 to avoid interference with the frame.

[0045] In a preferred embodiment of the included angle, the included angle between the mounting axis A and the axis B of the first pivot pin is further defined as 65 to 75 degrees; this allows for better avoidance of interference with the vehicle frame during the movement of the parallelogram linkage mechanism. It should be understood that within the defined angle range, those skilled in the art can select and apply the appropriate angle based on the actual construction process.

[0046] In one embodiment, the movable component 2 is configured to extend along the overall inclined path of the outer link 3 and the drive component 4; a pivot portion 23 is provided on the other side of the movable component 2, the axis of the pivot portion 23 is parallel to the lateral direction of the vehicle, and the chain guide 5 is pivotally connected to the pivot portion 23 and perpendicular to the lateral direction of the vehicle.

[0047] In this embodiment, the movable component 2 serves as the output end of the parallelogram linkage mechanism. Its range of motion is relatively larger than that of the outer link 3 and the drive component 4, making it more prone to interference with the rod 7. Therefore, based on the overall tilting path of the outer link 3 and the drive component 4, the overall structure of the movable component 2 also extends on the basis of the tilting path, that is, it tilts and extends towards the space below the rod 7 to ensure that it avoids the rod 7 as much as possible under a relatively large range of motion. Based on this, the movement of the movable component 2 is tilted, but the chain guide 5 on the other side of the movable component 2 needs to cooperate with the gearbox for gear shifting. Therefore, the chain guide 5 can tilt, but the chain guide 5 itself cannot tilt. To this end, a pivot part 23 is provided on the other side of the movable component 2. The axis of the pivot part 23 is parallel to the lateral direction of the vehicle. The chain guide 5 is pivotally connected to the pivot part 23 and is perpendicular to the lateral direction of the vehicle. In this way, when the movable component 2 moves in conjunction with the chain guide 5, the chain guide 5 only tilts but does not tilt itself. Furthermore, because the direction of movement of the chain guide 5 is tilted downward in the lateral direction of the vehicle, the movement distance of the chain guide 5 in the lateral direction of the vehicle is smaller and more uniform during gear shifting, resulting in smoother gear shifting and a better riding experience.

[0048] Combination Figure 7 In one embodiment, the base 1 includes a base body 11 and a mounting part 12; the mounting part 12 is located on the upper side of the base body 11, and the base 1 is fixedly mounted to the vehicle frame along the mounting axis A through the mounting part 12; the inner side of the base body 11 is provided with a receiving groove 113, and the receiving groove 113 is inclined downward along the vehicle's transverse direction; the first inner pivot pin 112 is inclinedly disposed in the receiving groove 113.

[0049] In this embodiment, mounting holes can be provided on the mounting part 12. After screws pass through the mounting holes, the device is fixed to the frame, thereby fixing the base 1 and thus fixing the entire electronic rear derailleur device to the frame. The receiving groove 113 on the inner side of the base body 11 is inclined downward along the lateral direction of the vehicle. The first inner pivot pin 112 is inclined in the receiving groove 113. When the drive assembly 4 rotates around the first inner pivot pin 112, the inclined receiving groove 113 can accommodate the space required when one end of the drive assembly 4 rotates.

[0050] More specifically, the drive assembly 4 is located in the receiving groove 113 inside the base 1 and the inner space of the outer connecting rod 3. The receiving groove 113 is also equipped with an electronic control assembly 6. In this way, the electronic control assembly 6 is closer to the drive assembly 4, which makes it easier to run the wiring so that the electronic control assembly 6 and the drive assembly 4 can be electrically connected.

[0051] More specifically, the electronic control component 6 includes a battery and a control board assembly. The battery powers the control board assembly, which is electrically connected to the drive component 4 to achieve drive control. The control board assembly is installed inside the receiving slot 113. One end of the battery is inserted into the receiving slot 113 and connected to the control board assembly, while the other end of the battery extends outside the other side of the receiving slot 113. The base body 11 protects the electronic control component 6 and reduces external impacts on it.

[0052] In one embodiment, the electronic control component 6 is mounted on one side of the receiving groove 113 parallel to the backward direction of the bicycle, and a protective part 13 is provided on the base 1 extending parallel to the forward direction of the bicycle, the protective part 13 overlapping the outer part of the electronic control component 6.

[0053] In this embodiment, most of the structure of the electronic control component 6 is usually exposed outside the electronic rear derailleur device for disassembly and maintenance. Therefore, it is more susceptible to damage from external vibration or impact. To improve the protection of the electronic control component 6, a protective part 13 is provided on the outside of the base 1 that can overlap with the outside of the electronic control component 6. The protective part 13 protects the electronic control component 6, thereby reducing the damage caused by external vibration or impact to the electronic control component 6.

[0054] In one embodiment, the electronic control component 6 includes a control box assembly 61 and a battery component 62. The control box assembly 61 is fixedly installed in the inner side of the base 1 and electrically connected to the drive assembly 4. The battery component 62 is detachably snapped into the base 1 and is in contact with the control box assembly 61 and electrically connected. The protective part 13 partially overlaps with the battery component 62, and the overlapping surface area accounts for 1 / 5 to 1 / 2 of the surface area of ​​the battery component 62.

[0055] In this embodiment, the contact point between the battery component 62 and the control box assembly 61 needs to be reinforced and stabilized to ensure a stable electrical connection. The protective part 13 can be made of metal. After the protective part 13 extends to the outside of the battery component 62 and partially overlaps with it, it can cover the contact point between the battery component 62 and the control box assembly 61, thereby achieving effective protection to ensure the stability of the electrical connection between the battery component 62 and the control box assembly 61.

[0056] In this embodiment, regarding the size of the overlapping surface area between the protective part 13 and the electronic control component 6, if the overlapping area is too small, the protective effect will be poor; if the overlapping area is too large, it will affect the transmission of the wireless signal of the wireless module because there is a wireless module in the control box component 61 (metal materials will affect the signal). Therefore, in this embodiment, the overlapping surface area is set to account for 1 / 5 to 1 / 2 of the surface area of ​​the battery component 62, which not only has a good protective effect, but also does not affect the disassembly and maintenance of the battery component 62, achieving a good balance.

[0057] In one embodiment, the drive assembly 4 includes a housing and an electrically controlled gear mounted inside the housing; the housing is configured as an internal connecting rod, with one end of the housing pivotally connected to a first internal pivot pin 112 and the other end of the housing pivotally connected to a corresponding second internal pivot pin 22; the electrically controlled gear is connected to the first internal pivot pin 112 in a transmission connection.

[0058] In this embodiment, the outer shell can be formed by an upper shell 41 and a lower shell 42 covering each other; both ends of the outer shell are provided with through holes and are respectively pivotally connected to the first inner pivot pin 112 and the second inner pivot pin 22; the electric control gear component includes a motor 43 and a gear set 44; the motor 43 is mounted on the lower shell 42 through a mounting plate, and the gear set 44 is composed of multiple gears of different sizes meshing and connected and is rotatably mounted on the lower shell 42 through a rotating shaft; the output end of the gear set 44 is pivotally connected to the first inner pivot pin 112; based on this, the gear set 44 is driven by the motor 43, and the output end of the gear set 44 rotates around the first inner pivot pin 112, so that the entire drive assembly 4 can rotate relative to the base 1 around the first inner pivot pin 112 to realize the movement of the parallelogram linkage mechanism.

[0059] In this embodiment, the outer shell is designed to function as an internal connecting rod to ensure sufficient strength. Therefore, the upper shell 41 can be constructed of metal to meet the strength requirements, while the lower shell 42 is made of plastic to facilitate the installation and wiring of the motor 43 and gear set 44.

[0060] Combination Figure 5 and Figure 6 In one embodiment, a return torsion spring 24 is fitted onto a second outer pivot pin 21 pivotally connected to the other end of the outer connecting rod 3. The return torsion spring 24 elastically abuts against and applies force to the second inner pivot pin 22 pivotally connected to the other end of the drive assembly 4. A swing arm 114 and a stabilizing torsion spring 115 are fitted onto a first inner pivot pin 112 pivotally connected to one end of the drive assembly 4. The swing arm 114 is configured to rotate and swing synchronously with the drive assembly 4. One elastic arm of the stabilizing torsion spring 115 is press-fitted onto the swing arm 114, and the other elastic arm of the stabilizing torsion spring 115 is connected to the base 1. The return direction of the stabilizing torsion spring 115 is consistent with the return direction of the return torsion spring 24.

[0061] In this embodiment, the return torsion spring 24 and the stabilizing torsion spring 115 are located diagonally opposite each other in the parallelogram linkage mechanism. Both the return torsion spring 24 and the stabilizing torsion spring 115 have a return function, which can ensure the motion stability of the entire parallelogram linkage mechanism. A swing arm 114 is also provided on the first inner pivot pin 112. The swing arm 114 can be located at the bottom of the lower housing 42. One end of the stabilizing torsion spring 115 is elastically pressed onto the swing arm 114, configuring the swing arm 114 to rotate and swing synchronously with the drive assembly 4. Thus, when severe vibrations during riding cause the parallelogram linkage mechanism to move, the swing arm 114 will move synchronously and act on the stabilizing torsion spring 115, which will buffer the vibration, thereby preventing upward gear shifting caused by vibration.

[0062] This invention also provides a human-powered vehicle, including the electronic rear derailleur device described above.

[0063] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electronic rear derailleur device, mounted on a bicycle frame and connected to a derailleur gear on the frame, characterized in that, The electronic rear derailleur device includes: A base is fixedly installed on the vehicle frame along the mounting axis, and the base is provided with two first pivot pins; The movable component has two second pivot pins on one side, which are positioned at the corners of a parallelogram with the two first pivot pins, and a chain guide that is pivotally connected to the transmission of the gear disc on the other side. The outer connecting rod is pivotally connected at one end to a first pivot pin and at the other end to a second pivot pin; A drive assembly, one end of which is pivotally connected to another first pivot pin and the other end of which is pivotally connected to another second pivot pin, is configured to be rotatably driven about the axis of the first pivot pin. The angle between the mounting axis and the axis of the first pivot pin is 60 to 80 degrees.

2. The electronic rear derailleur device according to claim 1, characterized in that, The angle between the mounting axis and the axis of the first pivot pin is 65 to 75 degrees.

3. The electronic rear derailleur device according to claim 1, characterized in that, The movable component is configured to extend along the overall inclined path of the outer connecting rod and the drive component; a pivot portion is provided on the other side of the movable component, the axis of the pivot portion is parallel to the lateral direction of the vehicle, and the chain guide is pivotally connected to the pivot portion and perpendicular to the lateral direction of the vehicle.

4. The electronic rear derailleur device according to claim 1, characterized in that, The base includes a base body and a mounting part; the mounting part is located on the upper side of the base body, and the base is fixedly mounted to the vehicle frame along the mounting axis through the mounting part; the inner side of the base body is provided with a receiving groove, and the receiving groove is inclined downward along the vehicle's lateral direction; a first pivot pin pivotally connected to one end of the drive assembly is inclinedly disposed in the receiving groove; the drive assembly is located in the receiving groove on the inner side of the base and the inner space of the outer connecting rod, and an electronic control assembly is also provided in the receiving groove, the electronic control assembly being electrically connected to the drive assembly.

5. The electronic rear derailleur device according to claim 1, characterized in that, The drive assembly includes a housing and an electrically controlled gear assembly mounted inside the housing. The housing is configured as an internal linkage, with one end of the housing pivotally connected to a corresponding first pivot pin and the other end of the housing pivotally connected to a corresponding second pivot pin. The electrically controlled gear assembly is drively connected to the corresponding first pivot pin. The electrically controlled gear assembly includes a motor and a gear set. The motor and gear set are connected and both are assembled in the housing. The output end of the gear set is pivotally connected to the first pivot pin.

6. The electronic rear derailleur device according to claim 4, characterized in that, The electronic control component is mounted on one side of the receiving slot along the direction parallel to the bicycle's backward movement. A protective part is provided on the base along the direction parallel to the bicycle's forward movement, and the protective part overlaps with the outer part of the electronic control component.

7. The electronic rear derailleur device according to claim 6, characterized in that, The electronic control assembly includes a control box assembly and a battery component. The control box assembly is fixedly installed inside the base and electrically connected to the drive assembly. The battery component is detachably snapped into the base and electrically connected to the control box assembly. The protective part partially overlaps with the battery component, and the overlapping surface area accounts for 1 / 5 to 1 / 2 of the surface area of ​​the battery component.

8. The electronic rear derailleur device according to claim 1, characterized in that, A return torsion spring is fitted on the second pivot pin, which is pivotally connected to the other end of the outer connecting rod. The return torsion spring elastically abuts against and applies force to the second pivot pin, which is pivotally connected to the other end of the drive assembly.

9. The electronic rear derailleur device according to claim 8, characterized in that, A swing arm and a stabilizing torsion spring are sleeved on the first pivot pin pivotally connected to one end of the drive assembly. The swing arm is configured to rotate and swing synchronously with the drive assembly. One end of the stabilizing torsion spring is press-fitted onto the swing arm, and the other end of the stabilizing torsion spring is connected to the base. The return direction of the stabilizing torsion spring is the same as the return direction of the return torsion spring.

10. A human-powered vehicle, characterized in that, Includes the electronic rear derailleur device as described in any one of claims 1 to 9.

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