Power supply device for a bicycle derailleur and bicycle derailleur

Abstract

The utility model discloses a power supply device for bicycle derailleur, including power supply containing mechanism and power, and power supply containing mechanism includes the support base, and the support base includes the power -on circuit board fixed on it, and its surface is equipped with a plurality of first electric contact, two side plates are constituted to be located above the support base and form power supply containing cavity by the certain distance interval, and the power supply is detachably contained in the power supply containing cavity and is placed on the support base, and the power supply has the first surface, and the first surface is equipped with a plurality of second electric contact, when the power supply is contained in the power supply containing cavity, the first surface is contacted with the surface of power -on circuit board, and a plurality of second electric contact and a plurality of first electric contact are aligned one by one to realize the electric connection. The utility model discloses still a kind of bicycle derailleur. The power supply device and bicycle derailleur of the utility model embodiment are used, and power supply can be safely and reliably installed to bicycle derailleur, to avoid being impacted and bumped.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a power supply device for bicycle derailleurs and a bicycle derailleur. Background Technology

[0002] Bicycle derailleurs are installed on bicycles and are commonly used to drive the chain, thus changing the chain from one sprocket to another in a sprocket unit. The technological trend in bicycle derailleurs, including front and rear derailleurs, is currently shifting towards electric derailleurs. In this case, using an electric power source to power the electric derailleur is essential. Given the limited space in bicycle derailleurs, how to better design and place the electric motor and power supply for the bicycle derailleur is a direction that industry professionals have been pursuing for improvement.

[0003] For example, patent document CN105882878A discloses a power supply for a bicycle derailleur, which includes a power supply housing configured to be removably mounted to the bicycle derailleur, a battery disposed within the housing, terminals located outside the housing and electrically connected to the battery, and a fixing mechanism located on the bicycle derailleur for releasably retaining the housing on the bicycle derailleur. One end of a base member is provided with a battery latch and a latch spring, and one end of the battery housing has a barb formed therein. The battery latch has a hook-shaped end that engages with the aforementioned barb. The base member also has a battery engagement hole at a distance from its other end. The opposite end of the battery housing has a protrusion that engages in the front battery engagement hole, thereby securing the battery to the base member.

[0004] This design mounts the power source on the side of the bicycle derailleur's base component, securing it with a latch or hook. Most of the battery is suspended above the derailleur, with its center of gravity outside the derailleur. This latching method makes the battery prone to detachment if the derailleur is impacted or exposed to bumpy terrain. Furthermore, the latches and protrusions are susceptible to wear, loosening, or breakage over time, causing the battery to lose power during vibrations and rendering the bicycle's shifting system unresponsive. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a power supply device for bicycle derailleurs, which can be reliably placed on the bicycle derailleurs and is not easily interrupted.

[0006] According to one aspect of the present invention, a power supply device for a bicycle derailleur is provided, comprising a power supply housing mechanism and a power supply. The power supply housing mechanism is located at a base member and includes: a support base, the support base including a power-conducting circuit board fixed thereon, the surface of the power-conducting circuit board having a plurality of first electrical contacts; two side plates configured to be located above the support base and spaced apart by a certain distance to form a power supply receiving cavity together with the support base, the size of the power supply receiving cavity being designed to fit the power supply perfectly; the power supply is detachably housed in the power supply receiving cavity and placed on the support base, the power supply having a first surface, the first surface having a plurality of second electrical contacts; wherein, when the power supply is housed in the power supply receiving cavity, the first surface is in contact with the surface of the power-conducting circuit board and the plurality of second electrical contacts are aligned with the plurality of first electrical contacts to achieve electrical connection.

[0007] In an optional embodiment, the power supply housing mechanism further includes a power supply cover configured to be located between the two side plates and rotatable about the axis of the connecting pin, thereby moving between an open position and a locked position. The power supply has a second surface opposite the first surface, and when the power supply cover is in the locked position, it locks the power supply within the power supply housing cavity and applies a downward locking force to the second surface of the power supply.

[0008] In an alternative embodiment, the power-conducting circuit board is provided with a power supply wiring harness for electrical connection to an electric motor disposed on a bicycle derailleur.

[0009] In an optional embodiment, the base component further includes a mounting portion and a linkage connection portion connected to the linkage mechanism, wherein the power supply housing structure is integrally formed with the mounting portion and the linkage connection portion.

[0010] In an optional embodiment, the power cover includes a pressure plate having a first end and an opposing second end. The first end of the pressure plate is rotatably connected between the two side plates via a first pin, and a groove is formed in the middle of the pressure plate. The power cover also includes a locking member having a first end and an opposing second end. The second end of the locking member is rotatably connected to the second end of the pressure plate via a second pin, and the locking member has a protrusion adapted to the groove. When the locking member rotates about the axis of the second pin in a first direction and the protrusion presses into the groove of the pressure plate, the power cover locks the power supply; and when the protrusion disengages from the groove of the pressure plate, the locking member rotates about the axis of the second pin in a second direction opposite to the first direction, and the power cover can move from the locked position to the open position when the pressure plate is subjected to a traction force and rotates about the axis of the first pin.

[0011] In an alternative embodiment, the power cover is configured such that, when in the locked position, its cross-section parallel to the side plate forms an equivalent triangle in structural mechanics.

[0012] In an optional embodiment, the power source includes a battery body and a housing that includes the battery body. The housing has a Type-C interface for electrical connection with a charging cable to charge the power source.

[0013] In an alternative embodiment, the Type-C interface and the plurality of second electrical contacts are disposed on the same surface.

[0014] In an optional embodiment, the power supply further includes an LED light disposed within the housing, the LED light being used to indicate the charging of the battery or electrical connection with the power-on circuit board, and the housing having a light-transmitting surface for the LED light.

[0015] In an optional embodiment, the surface of the power-conducting circuit board is further provided with a flexible pad, which is located near the entrance of the power receiving cavity. When the power supply is housed in the power receiving cavity, the Type-C interface is aligned with the flexible pad.

[0016] The housing of the power supply has a chamfered surface adjacent to the first surface to constrain the displacement of the power supply within the power supply housing cavity. According to another aspect of the present invention, a bicycle derailleur is also provided, including a base member comprising a mounting portion for mounting the bicycle derailleur to a bicycle frame; a movable member to which a chain guide is attached; a linkage mechanism connecting the movable member to the base member via a plurality of pivot axes and operable to move the movable member relative to the base member; an electric motor module connected to the movable member; the bicycle derailleur further includes the power supply device described above.

[0017] In an optional embodiment, the base component can be mounted to a bicycle frame along the mounting axis of the mounting portion, the mounting axis being defined by the axis of the pivot screw provided in the mounting portion, and the power supply device being located below the mounting axis.

[0018] In an optional embodiment, the support base of the power supply housing mechanism is configured with a linkage connection portion that is pivotally connected to the linkage mechanism, thereby enabling the connection between the movable component and the base component.

[0019] In an optional embodiment, the electric motor module is electrically connected to the energized circuit board, and further electrically connected to the power supply device.

[0020] In an optional embodiment, the linkage mechanism includes an outer linkage member and an inner linkage member, and the electric motor module is fixed to at least one of the inner linkage member and the outer linkage member.

[0021] The power supply device and bicycle derailleur using this embodiment of the invention, since the entire power supply is placed within the battery housing of the bicycle derailleur's base component, avoids the problem of it falling off or being damaged during vehicle transportation and use. Furthermore, the power supply is protected from all sides by a power cover, making the power supply's fixation more reliable and preventing the possibility of internal short circuits in the power supply cells leading to abnormal overheating or fire. In addition, the power supply's own weight and the downward locking force applied by the power cover better ensure electrical connection between the power supply and the circuit board, thereby reliably supplying power to the bicycle derailleur and ensuring the timely response of the bicycle's shifting system. Attached Figure Description

[0022] Figure 1 This is an exemplary perspective view of a bicycle gearbox according to an embodiment of the present invention.

[0023] Figure 2 yes Figure 1 An exemplary front view of a bicycle gearbox is shown.

[0024] Figure 3 yes Figure 1 The diagram shows a schematic representation of the base component of a bicycle derailleur equipped with a power source, viewed from one angle.

[0025] Figure 4 It is based on Figure 3 The diagram shown shows the base component after removing one side plate and the power supply.

[0026] Figure 5 yes Figure 1 The diagram shows a structural schematic of the base component of a bicycle derailleur without a power source, viewed from another angle.

[0027] Figure 6 The internal power-conducting structure of the power-conducting circuit board of the base component according to an embodiment of the present invention is shown.

[0028] Figure 7 A schematic diagram of the power supply according to an embodiment of the present invention is shown.

[0029] Figure 8 A cross-sectional view is shown when the power supply is connected to the circuitry of the powered circuit board.

[0030] Figure 9a A schematic diagram of the structure is shown with the power cover and power supply in the locked position.

[0031] Figure 9b A schematic diagram of the power supply cover after the locking mechanism has been released is shown.

[0032] Figure 9c A schematic diagram of the structure when the power supply cover is in the open position is shown.

[0033] Figure 10 This is an exemplary perspective view of a bicycle gearbox according to an embodiment of the present invention, viewed from another angle.

[0034] Figure 11 This is a schematic diagram of the structure in which the power supply cover is in the locked position after the power supply is removed from the base component according to this embodiment of the invention.

[0035] Figure label: 10-Bicycle derailleur; 12-Base component; 121-Support base; 123-Side plate; 125-Power supply cavity; 127-First link connection; 128-Second link connection; 131-Mounting part; 132-Shaft screw; 14-Modible component; 16-Linkage mechanism; 18-Chain guide; 20-Power supply; 201-Second electrical contact; 203-Type-C interface; 205-LED light-transmitting surface; 207-Beveled surface; 30 - Power-on circuit board; 301 - First electrical contact; 40-Power cover; 401-Pressure plate; 402-First end of the pressure plate; 403-Second end of the pressure plate; 405-Groove; 406-Locking part; 407-First end of the locking part; 408-Second end of the locking part; 409-Protrusion; 411-Locking part; 50 - Electric motor module. Detailed Implementation

[0036] The technical solutions of the embodiments will now be clearly and completely described with reference to the accompanying drawings of this application. Those skilled in the art will understand that the embodiments described in the specification are only a part of the embodiments of this utility model invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort are within the scope of protection of this utility model.

[0037] In the description of this patent specification, terms such as "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "longitudinal," "transverse," "center," "vertical," "horizontal," "length," "width," "thickness," "clockwise," and "counterclockwise" indicate orientations or positional relationships only for the convenience of describing the embodiments involved in the technical innovation of this utility model, and should not be construed as limiting the scope of protection of the claims. Furthermore, those skilled in the art will understand that the terms "first" and "second" used in this specification to describe various components are only for distinguishing one component from another, and have no sequential meaning; the corresponding components should not be limited by these terms.

[0038] In this invention, the bicycle can be any type of bicycle, such as a mountain bike, a road bike, etc. Figure 1 This is an exemplary perspective view of a bicycle gearbox according to an embodiment of the present invention. Figure 1 The bicycle derailleur shown is a rear derailleur. Figure 2 yes Figure 1 An exemplary front view of a bicycle derailleur is shown. Figure 1 and 2 As shown, the bicycle derailleur 10 of this embodiment includes a base member 12 and a movable member 14 movably connected to the base member 12. The bicycle derailleur 10 also includes a linkage mechanism 16, which connects the movable member 14 to the base member 12 via a plurality of pivot shafts. By operating the linkage mechanism 16, the movable member 14 can be moved relative to the base member 12.

[0039] The linkage mechanism 16 includes an outer linkage member and an inner linkage member. In an optional embodiment, the bicycle derailleur also includes an electric motor module 50, which is arranged at the linkage mechanism 16. In one embodiment, the electric motor module 50 is also configured to serve as an inner linkage member of the linkage mechanism 16. A detailed description of the connection relationship and structural diagram between the outer linkage member, the electric motor module, and the movable member of this bicycle derailleur can be found in the specification of another utility model patent application filed by the applicant: application number 202520280032.5, entitled Electric Rear Derailleur, which will not be repeated here.

[0040] like Figure 1-5As shown, the bicycle derailleur also includes a power supply unit located at the base member 12 for providing power to the electric motor module 50. The power supply unit includes a power supply housing mechanism and a power source 20. The power supply housing mechanism includes a support base 121 having a power-conducting circuit board 30 fixed thereon. The surface of the power-conducting circuit board 30 is provided with a plurality of first electrical contacts 301. In an optional embodiment of this application, the number of first electrical contacts is four. The power supply housing mechanism also includes two side plates 123 configured to be positioned above the support base 121 and spaced apart to form a power supply receiving cavity 125 together with the support base 121. The power supply unit also includes the power source 20, which is removably housed within the power supply receiving cavity 125 and placed on the support base 121. The dimensions of the power supply receiving cavity 125 are designed to perfectly fit the dimensions of the power source 20, i.e., the cavity space of the power supply receiving cavity 125 is slightly larger than the housing size of the power source 20.

[0041] The power supply 20 has a first surface on which a plurality of second electrical contacts 201 are provided. When the power supply 20 is housed in the power supply housing cavity 125, the first surface contacts the surface of the power-conducting circuit board 30 and the plurality of second electrical contacts 201 are aligned with the plurality of first electrical contacts 301 of the power-conducting circuit board 30 to achieve electrical connection.

[0042] In a preferred embodiment of this application, the power supply device further includes a power supply cover 40. For example... Figure 4 and Figure 5 As shown, the power cover 40 includes a pressure plate 401, which has a first end 402 and an opposite second end 403. The first end 401 of the pressure plate 40 is rotatably connected between two side plates 123 by a first pin. A groove 405 is opened in the middle of the pressure plate 401.

[0043] The power cover also includes a locking member 406, which has a first end 407 and an opposing second end 408. The second end 408 of the locking member 406 is rotatably connected to the second end 403 of the pressure plate 401 via a second pin. The locking member 406 is rotatable about the axis of the second pin. The locking member 406 is provided with a protrusion 409. The locking member 406 rotates about the axis of the second shaft in a first direction B (counterclockwise). When the protrusion 409 is pressed into the groove of the pressure plate 401, the power cover 40 locks the power supply 20. Figure 9a As shown.

[0044] When the protrusion 409 of the locking member 406 disengages from the groove of the pressure plate 401, the locking member 406 rotates about the axis of the second pin in a second direction C (clockwise), which is opposite to the first direction B. Figure 9bThe diagram shows the state of the entire power cover 401 after the locking member 406 is released, at which point the position of the pressure plate 401 remains unchanged. Then, the user can pull the locking member 406 to rotate the pressure plate 401 around the axis of the first pin in the first direction B, as shown. Figure 9c As shown. This opens the power cover 40 and rotates it from the locked position to the open position. (Reference) Figure 11 The diagram shows the power supply cover 40 in the locked position after the power supply 20 is removed from the power supply receiving mechanism of the base member 12.

[0045] In a preferred embodiment of the present invention, such as Figure 9a As shown, when the power cover 40, composed of pressure plate 401 and locking member 406, is in the locked position, its cross section parallel to the side wall forms an equivalent triangle in structural mechanics. The power cover applies a downward locking force to the power supply 20 at the second end 403 of pressure plate 401, as shown in the figure.

[0046] In a further preferred embodiment, the first end 407 of the locking member 406 has a recessed locking portion 411. The mounting portion 131 is provided with a protrusion adapted to the locking portion 411. When the power cover 40 is in the locked position, the locking portion 411 is adapted to the protrusion of the mounting portion 131. When the power supply 20 is loose and there is a force opposite to the locking force, it will be transmitted to the locking portion through the equivalent triangular structure. Due to the stability of the triangle, the power supply can be effectively locked, thereby preventing the battery from losing power due to accidental loosening and causing the electric system to fail.

[0047] In an optional embodiment of the present invention, the maximum angle that the locking member 406 can rotate in the first direction (counterclockwise) around the axis of the second pin is about 90 degrees.

[0048] like Figure 4 and Figure 6 As shown, the power-conducting circuit board 30 includes a printed circuit board and a housing enclosing the printed circuit board. The printed circuit board is connected to a power supply wiring harness for electrical connection to an electric motor arranged at a linkage mechanism. Four first electrical contacts are also arranged on the printed circuit board. In one embodiment, the first electrical contacts include spring-loaded contacts, which can accommodate a certain gap or looseness to ensure reliable power supply. The spring-loaded contacts pass through the housing and are arranged outside the power-conducting circuit board 30. A flexible pad is also provided on the surface of the housing of the power-conducting circuit board 30 to provide a certain buffering force for the power supply 20 to be placed into the power supply housing 125, while also achieving a waterproof function for the electrical structure. In one embodiment, a flexible pad is provided around the four electrical contacts. In another embodiment, a flexible pad is also provided at a certain distance from the four electrical contacts to provide waterproofing for the battery's Type-C port.

[0049] Figure 7A schematic diagram of the power supply according to an embodiment of the present invention is shown. Figure 8 A cross-sectional view is shown when the power supply is connected to the circuitry of the energized circuit board. (See diagram below.) Figure 7 and Figure 8 As shown, the power supply 20 includes a battery body, a circuit board electrically connected to the battery body, and a housing that encloses the battery body and the circuit board. The circuit board of the power supply 20 has four second electrical contacts. In one embodiment, since the first electrical contact 301 on the energized circuit board 30 is designed to protrude, the second electrical contacts 201 on the power supply 20 are correspondingly designed to be recessed. Specifically, the first surface (i.e., the lower surface) of the power supply housing has four holes for the first electrical contact 301 to be inserted and electrically connected to the second electrical contacts.

[0050] In one embodiment, the power supply housing is further provided with a Type-C interface 203 for electrical connection with a charging cable to charge the power supply. In a further embodiment, the Type-C interface 203 and the second electrical contact 201 are disposed on the same surface.

[0051] The power supply 20 also includes an LED light disposed within the housing. The LED light is arranged on the power supply's circuit board and is used to indicate whether the battery is charging or electrically connected to the power-on circuit board. The power supply housing has an LED light-transmitting surface 205 to allow the user to easily understand the power supply's charging or electrical connection status.

[0052] In an optional embodiment, a flexible pad is disposed on the surface of the power-conducting circuit board 30 near the entrance of the power receiving cavity. When the power supply 20 is housed within the power receiving cavity 125, the Type-C interface 203 is aligned with the flexible pad. This flexible pad can be used to prevent the Type-C interface from being inserted. It also provides some cushioning when the power supply 20 is placed into the power receiving cavity, and provides waterproofing for the battery's Type-C port.

[0053] The housing of the power supply 20 has a chamfered surface 207 adjacent to the first surface. Since the size of the power supply 20 perfectly matches the power supply housing 125, the possible displacement is very limited. In actual use, when the user installs the power supply 20 into the power supply housing 125 and directly presses the locking member 406 to lock the locking part 411, the chamfered surface 207 ensures that the first electrical contact 301 and the second electrical contact 201 achieve an ideal alignment.

[0054] In this embodiment, the base component includes a mounting portion 131 with a mounting through hole. The bicycle derailleur also includes a pivot screw 132, configured to pass through the mounting through hole of the mounting portion 131 to mount the bicycle derailleur to the bicycle frame. In one embodiment, the mounting through hole is located on the side above the power supply housing 125. Figure 1As shown, the base component 12 of the pivot screw 132 can be mounted to the bicycle frame along the mounting axis A-A'. The mounting axis A-A' is defined by the axis of the pivot screw 132 located on the mounting portion 131. The power supply is located below this mounting axis.

[0055] The linkage mechanism 16 includes an outer linkage member and an inner linkage member. The support base 121, besides serving to house the power supply 20, also serves to connect to the linkage mechanism 16. In one embodiment, such as... Figure 1 , 3 As shown in Figure 10, the support base 121 is configured to have a first link connection portion 127 connected to the inner link member via a corresponding pivot axis and a second link connection portion 128 connected to the outer link member via a corresponding pivot axis.

[0056] like Figure 1 and Figure 10 As shown, the bicycle derailleur 10 also includes an electric motor module 50 fixed to the linkage mechanism 16. The electric motor module 50 drives the linkage mechanism 16 and the movable member 14, and thus drives the chain guide 18. The electric motor module 50 includes a first end and a second end opposite to the first end. The first end of the electric motor module 50 is connected to the first linkage connection portion 127. In one embodiment of this application, the output shaft of the electric motor is rotatably connected to the movable member 14. The internal structure of the electric motor module 50 is conventional prior art and will not be described further here.

[0057] When the power supply device of this invention is used in a bicycle derailleur, it ensures that the power supply is securely and reliably fixed to the bicycle derailleur, especially to the base component. Furthermore, the power supply device effectively guarantees power supply to the electric motor module and is less prone to power outages. The bicycle derailleur includes a rear derailleur and a front derailleur; the power supply device of this invention can be used in either the rear or front derailleur.

[0058] In the power supply device and bicycle derailleur of the present invention, the power supply 20 is located at the power supply housing cavity 125. Compared with the power supply device for bicycle derailleur in the prior art, the power supply 20 of the present invention is less exposed to the outside, and the power supply housing cavity can achieve a better protection effect for the power supply 20 compared with the prior art.

[0059] We know that the rear derailleur protrudes from the frame when mounted on a bicycle, making it susceptible to impacts and knocks during use. The battery cells inside power supply 20 are relatively fragile components; compression can cause internal short circuits, leading to reduced cell capacity, abnormal overheating, and even a risk of fire. Therefore, power supply 20 adopts... Figure 11 The full-frame protection shown can prevent power supply damage and increase the power supply's lifespan.

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power supply device for a bicycle derailleur, comprising a power supply housing mechanism and a power supply, characterized in that, The power supply housing mechanism is located at the base component and includes: A support base, the support base including an electrified circuit board fixed thereon, the surface of the electrified circuit board being provided with a plurality of first electrical contacts; Two side plates are configured to be located above the support base and spaced a certain distance apart, thereby forming a power supply cavity together with the support base. The size of the power supply cavity is designed to fit the power supply perfectly. The power supply is detachably housed in the power supply receiving cavity and placed on the support base. The power supply has a first surface, on which a plurality of second electrical contacts are provided. When the power supply is housed in the power supply housing cavity, the first surface is in contact with the surface of the power-conducting circuit board, and the plurality of second electrical contacts are aligned with the plurality of first electrical contacts to achieve electrical connection.

2. The power supply device according to claim 1, characterized in that, The power supply housing mechanism further includes a power supply cover configured to be located between the two side plates and rotatable about the axis of the connecting pin, thereby moving between an open position and a locked position; and, The power supply also has a second surface opposite to the first surface. When the power supply cover is in the locked position, it can lock the power supply inside the power supply receiving cavity and apply a downward locking force to the second surface of the power supply.

3. The power supply device according to claim 1, characterized in that, The power circuit board is provided with a power supply wiring harness for electrical connection to an electric motor arranged on a bicycle derailleur; and / or, the base component further includes a mounting portion and a linkage connection portion connected to a linkage mechanism, wherein the power supply housing structure is integrally formed with the mounting portion and the linkage connection portion.

4. The power supply device according to claim 2, characterized in that, The power cover includes a pressure plate having a first end and an opposite second end. The first end of the pressure plate is rotatably connected between the two side plates by a first pin, and a groove is formed in the middle of the pressure plate. and, A locking member having a first end and an opposing second end, the second end of the locking member being rotatably connected to the second end of the pressure plate by a second pin, the locking member being provided with a protrusion adapted to the groove; Wherein, when the locking member rotates about the axis of the second pin in a first direction and the protrusion presses into the groove of the pressure plate, the power cover locks the power supply; and, When the protrusion disengages from the groove of the pressure plate, the locking member rotates about the axis of the second pin in a second direction opposite to the first direction. When the pressure plate is subjected to a traction force and rotates about the axis of the first pin, the power cover can move from the locked position to the open position.

5. The power supply device according to claim 4, characterized in that, The power cover is configured such that, when in the locked position, its cross-section, parallel to the side plate, forms an equivalent triangle in structural mechanics.

6. The power supply device according to claim 2, characterized in that, The power source includes a battery body and a housing that includes the battery body. The housing has a Type-C interface for electrical connection with a charging cable to charge the power source.

7. The power supply device according to claim 6, characterized in that, The Type-C interface and the plurality of second electrical contacts are disposed on the same surface; and or, The power supply also includes an LED light disposed inside the housing. The LED light is used to indicate the charging of the battery or electrical connection with the power-on circuit board. The housing is provided with a light-transmitting surface for the LED light.

8. The power supply device according to claim 7, characterized in that, The surface of the power-conducting circuit board is also provided with a flexible pad, which is located near the entrance of the power supply cavity. When the power supply is housed within the power supply cavity, the Type-C interface is aligned with the flexible pad; and / or, The housing of the power supply has a chamfered surface adjacent to the first surface to constrain the displacement of the power supply within the power supply housing cavity.

9. A bicycle derailleur, comprising: A base component, the base component including a mounting portion for mounting a bicycle derailleur to a bicycle frame; A movable component, on which a chain guide is attached; A linkage mechanism, wherein the movable member is connected to the base member via a plurality of pivot axes and is operable to move the movable member relative to the base member; an electric motor module connected to the movable member; characterized in that... The bicycle gearbox also includes the power supply device as described in any one of claims 1 to 8.

10. The bicycle derailleur according to claim 9, characterized in that, The base component can be mounted to a bicycle frame along the mounting axis of the mounting portion, the mounting axis being defined by the axis of the pivot screw provided on the mounting portion, and the power supply device being located below the mounting axis; and / or, The power supply housing structure has a support base with a connecting rod that is pivotally connected to the linkage mechanism, thereby connecting the movable component to the base component.

11. The bicycle derailleur according to claim 9, characterized in that, The electric motor module is electrically connected to the energized circuit board, and further electrically connected to the power supply device; and / or, The linkage mechanism includes an outer linkage component and an inner linkage component, and the electric motor module is fixed to at least one of the inner linkage component and the outer linkage component.

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