DE102019204885A1 - Bicycle rear derailleur - Google Patents

Abstract

The present disclosure relates to a bicycle rear derailleur (40) comprising a base element (10) configured for attachment to a bicycle frame, a movable element (12) which is movably arranged thereon with respect to the base element (10), a A chain guide (14) pivotally attached to the movable member (12) and including an electrical generator (16) configured to generate electrical energy in response to movement of the chain guide (14).

Description

BACKGROUND OF THE INVENTION

Technical area

The present invention relates to a bicycle rear derailleur. In particular, the present invention relates to a bicycle rear derailleur having an electrical generator for generating electrical energy.

Description of the prior art

Recently, bicycles have been equipped with various electrical components to make cycling easier and more comfortable for the rider. Some bicycles are equipped with electrically controlled shifting systems. The electrically controlled switching systems can be operated automatically or manually by the driver, depending on the driving situation. In some bicycles, the control signals are transmitted wirelessly to a switching system or the like. The transmission of control signals and electrically controlled switching systems require electrical energy to operate. Some bicycles are equipped with a battery as a power source for the electrical components. Some bicycles are equipped with a generator as a power source for the electrical components.

In this context relates US 20090291789 A1 on a bicycle rear derailleur with a movement resistant device which is designed to change the movement resistance of a chain guide of the bicycle rear derailleur. The motion resistant device may include an electric motor.

According to US 20120322594 A1 and JP H7-251784 A A pulley of a bicycle derailleur has a dynamo which forms an electrical generator for generating electrical energy in response to the movement of the pulley.

DISCLOSURE OF THE INVENTION

Independently of the above-described measures for generating electrical energy in a bicycle rear derailleur, the object of the present invention is to provide a bicycle rear derailleur in which the generation of electric energy can be further improved.

According to a first aspect of the present disclosure, a bicycle derailleur includes a base member configured to be attached to a bicycle frame, a movable member attached thereto movably with respect to the base member, a chain guide pivotally attached to the movable member, and an electrical generator configured to generate electrical energy in response to movement of the chain guide.

It is thus possible to generate electricity for the operation of electrical components by any movement of the chain guide. For example, the chain guide often moves relative to the movable member when the bicycle rear derailleur moves or vibrates while the bicycle is traveling on a road with an uneven shape such as a dirt road or a mountain road. The bicycle derailleur according to the present invention is particularly useful as a rear derailleur. In addition, electrical energy can be generated in particular when the bicycle rear derailleur is attached to a mountain bike that is suitable for driving on uneven or “bumpy” roads. This is because such roads cause significant movement of the chain guide so that electrical power can be generated as described above.

In addition, due to the electrical resistance that results from the electromagnetic effects in the electrical generator due to the movement of the chain guide with respect to the movable element, the electrical generator also advantageously functions as a damper. This means that excessive movement of the chain guide can be dampened advantageously. This damping advantageously prevents e.g. unintentional switching. As a result, for example, a coupling that was previously used for damping can be omitted and is replaced by the electrical generator.

According to a second aspect of the invention, in the bicycle rear derailleur according to the first aspect, the chain guide is configured such that it is pivotable about a pivot axis relative to the movable element, and the electric generator is arranged about the pivot axis.

In this way, the movable connection between the chain guide and the movable element is implemented in a simple manner and enables electrical energy to be generated easily and efficiently. In this context, the electrical generator can be incorporated into an electrical generator unit, which can also have an acceleration mechanism. With such an acceleration mechanism, the electric generator is designed so that it generates a large amount of electric power when the chain guide moves slightly relative to the movable element. The resistance to movement of the chain guide compared to the movable element increased to ensure the damping described above.

According to a third aspect of the invention, the bicycle derailleur according to the first or second aspect is configured such that the electric generator has a rotor and a stator, the rotor being connected to one of the movable element and the chain guide, and the stator to the other movable element and the chain guide is connected.

This corresponds to an efficient and reliable design of the electrical generator.

According to a fourth aspect of the invention, the bicycle derailleur according to the third aspect is designed such that the rotor and the stator are opposite one another in the radial direction with respect to a pivot axis.

In this way, the size of the electric generator can be kept compact in the axial direction with respect to the pivot axis.

According to the fifth aspect of the invention, the bicycle derailleur according to the third aspect is designed such that the rotor and the stator are opposite in the axial direction with respect to the pivot axis.

In this way, the size of the electric generator can be compressed in the radial direction with respect to the pivot axis. In some situations, such a structure is advantageous over the compact size in the axial direction described above.

According to a sixth aspect of the invention, the bicycle derailleur according to one of the first to fifth aspects furthermore has an electrical storage device which is designed to store the electrical energy generated by the electrical generator.

It is thus possible to temporarily store the electrical energy generated by the electrical generator and to use it at a later point in time. This can e.g. be a situation where an electrically operated switchgear or lighting device is to be operated.

According to a seventh aspect of the invention, the bicycle derailleur according to the sixth aspect further includes a connection structure that operatively connects the movable member to the base member, and the electric storage is disposed on at least one of the base member, the movable member, the connection structure and a bicycle frame .

All of the components mentioned enable space-saving and efficient accommodation of the electrical storage device.

According to an eighth aspect of the invention, the bicycle derailleur according to one of the sixth and seventh aspects is designed such that the electrical generator and the electrical storage device are electrically connected to one another.

This connection can be established directly or indirectly and makes it possible to temporarily store the electrical energy generated by the electrical generator. In particular, the electrical storage device can be connected directly to the electrical generator. The electrical storage device can, however, also be connected to the electrical generator indirectly via an electrical wire.

According to a ninth aspect of the invention, the bicycle derailleur according to the eighth aspect further comprises an electric wire that electrically connects the electric generator and the electric storage device to one another.

With such an electric wire, the freedom in terms of the locations where the electric storage is arranged is increased.

According to a tenth aspect of the invention, the bicycle derailleur according to the sixth aspect further includes a connection structure that operatively connects the movable member to the base member, and an electric wire that passes through the connection structure to electrically connect the electric generator and the electric storage , on.

In this way, an interior space of the connection structure can advantageously be used for receiving the electrical wire.

According to an eleventh aspect of the invention, the bicycle rear derailleur according to any one of the first to tenth aspects further comprises a motor unit that is configured to operate the movable member with respect to the base member.

In this way, the electrical energy generated by the electrical generator for operating the bicycle rear derailleur is used efficiently in order to bring about a movement of the movable element relative to the base element. In this context, an electrical wire can connect the electrical generator and the electrical storage. In addition, an electric wire can also connect the electric accumulator and the motor unit. The motor unit can be designed, for example, to shift gears by moving the movable element so that a through The chain passing through the chain guide is transferred from one toothed wheel to another. The motor unit is preferably arranged on the base element. The motor unit is preferably arranged on the base element. This makes it possible to keep the movable element relatively small.

According to a twelfth aspect of the invention, the bicycle rear derailleur according to one of the first to eleventh aspects furthermore has a wireless communication unit which is configured for communication with the bicycle component.

In this way, the electrical energy generated by the electrical generator can be used to operate the wireless communication unit. It should also be mentioned that the wireless communication unit can comprise a receiver, a transmitter, or both a receiver and a transmitter. The wireless communication unit can for example be accommodated in the base element, in the movable element or in the connection structure.

According to a thirteenth aspect of the invention, a bicycle derailleur has a base member that is configured to be attached to the bicycle frame, a movable member that is movably connected relative to the base member, a connecting structure that operably pivotally connects the movable member to the base member, and an electric generator configured to generate electrical energy in response to movement of the connection structure.

In general, as described above, it is possible to generate electrical energy by moving the connection structure. This electrical energy can be used to operate electrical components. In addition, the electrical generator can also function as a damper, as already described in detail above.

According to a fourteenth aspect of the invention, the bicycle derailleur according to the thirteenth aspect is configured such that the connection structure is configured to be pivotable about a pivot link axis and the electric generator is arranged about the pivot link axis.

In this way, the connection structure is connected simply and efficiently, and the generator for generating electrical energy is also arranged simply and efficiently.

Figure list

• 1 ist eine Seitenansicht eines exemplarischen Fahrrads mit einem Fahrradschaltwerk;
• 2 ist eine Seitenansicht eines Fahrradschaltwerks, auf dem die vorliegende Erfindung basiert;
• 3 ist eine perspektivische Ansicht eines Fahrradschaltwerks gemäß einer ersten Ausführungsform der Erfindung;
• 4 ist eine weitere perspektivische Ansicht der in 3 dargestellten Ausführungsform;
• 5 ist eine weitere perspektivische Ansicht der in den 3 und 4 dargestellten Ausführungsform;
• 6 ist eine perspektivische Ansicht eines Fahrradschaltwerks gemäß einer zweiten Ausführungsform der Erfindung mit weggeschnittenen Teilen;
• 7 ist eine Seitenansicht eines Details des in 6 dargestellten Fahrradschaltwerks;
• 8 ist eine Draufsicht auf ein Detail des in den 6 und 7 dargestellten Fahrradschaltwerks mit weggeschnittenen Teilen;
• 9 ist eine perspektivische Ansicht eines Fahrradschaltwerks gemäß einer dritten Ausführungsform der Erfindung mit weggeschnittenen Teilen.

A more complete knowledge of the invention and many of its advantages will be readily obtained as they can be better understood from the following detailed description when considered in conjunction with the accompanying drawings.

• 1 Figure 3 is a side view of an exemplary bicycle with a bicycle rear derailleur;
• 2 Fig. 3 is a side view of a bicycle derailleur on which the present invention is based;
• 3 Fig. 3 is a perspective view of a bicycle derailleur according to a first embodiment of the invention;
• 4th FIG. 3 is another perspective view of the FIG 3 illustrated embodiment;
• 5 FIG. 13 is another perspective view of that of FIGS 3 and 4th illustrated embodiment;
• 6th Fig. 3 is a perspective view of a bicycle derailleur according to a second embodiment of the invention with parts cut away;
• 7th FIG. 3 is a side view of a detail of the 6th illustrated bicycle rear derailleur;
• 8th Figure 3 is a plan view of a detail of the figure shown in Figs 6th and 7th Bicycle rear derailleur illustrated with parts cut away;
• 9 Figure 3 is a perspective view of a bicycle derailleur according to a third embodiment of the invention, with parts cut away.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Embodiments of the invention will now be explained with reference to the drawings. From this disclosure it will be apparent to those skilled in the bicycle field that the following description of the embodiments is given for illustration only and not for the purpose of restricting the invention as defined in the independent claims.

Referring first to 1 becomes an exemplary bike 1 with a bicycle rear derailleur 40 in accordance with at least one disclosed embodiment of the present invention. The bike 1 is for example an off-road bicycle such as a cyclocross bicycle or a mountain bike. Alternatively, the bike can 1 also be a racing bike.

In continuation of 1 instructs the bike 1 a frame 2 on that on a rear wheel 3 is attached. A front fork 4th brings a front wheel 5 on the frame 2 on. The pedals 6th on both sides of the bike 1 are on the corresponding crank arms 7th attached. The crank arms 7th are on both sides of the frame 2 Mounted offset by 180 degrees and through a crank axle 8th (indicated by the dashed line). The bike 1 of the present embodiment is powered by a chain drive system which is a bicycle chain 9 , the bicycle rear derailleur 40 , a cassette with rear sprockets 42 and a front sprocket 44 having. The bicycle chain 9 engages one of the cassette of the rear sprocket 42 and the front pinion 44 one. One on the pedals 6th applied driving force turns the crank axle 8th and the front sprocket 44 . While the front sprocket 44 turns, the bicycle chain becomes 9 around the cassette of the rear sprocket 42 being led around, which put the power on the rear wheel 3 transfers to the bike 1 to drive. The rear derailleur 40 moves the bike chain 9 between the pinions 42 to find the distance traveled for each revolution of the pedals 6th to zoom in or out. In other words, the gear ratio of the front and rear sprockets is changed by moving the rear derailleur. Other parts of the bike 1 are known and are not described here.

2 Figure 3 is a right side view of a bicycle rear derailleur 40 according to the present disclosure. As shown, the bicycle rear derailleur 40 a basic element 10 , a moving element 12 , a connection structure 30th and a chain guide 14th on. The basic element 10 is to be attached to the bike frame 2 designed. The moving element 12 is designed so that it is in relation to the base element 10 is movable, and the chain guide 14th is pivotable with the movable element 12 connected. The connection structure 30th is pivotable with the base element 10 and the movable element 12 connected. The connection structure 30th has an outer link 30a and an inner link 30b what better in 4th can be seen on. The chain guide 14th has an outer panel 14a and an inner panel 14b on what's better in 5 you can see. The chain guide 14th furthermore has at least one deflection roller which is arranged between the outer plate and the inner plate. The at least one deflection roller comprises a guide roller 54 and a tension pulley 56 .

3 to 7th disclose a bicycle derailleur 40 according to a first embodiment of the invention. The illustrated embodiment is a switching mechanism 40 that is a mechanical rear derailleur 40 can be, which is connected to a gear lever via a mechanical wire. Such a rear derailleur 40 is operated in response to the driver's shift. When the driver pulls the gear lever, the mechanical wire moves. The movement of the mechanical wire causes the rear derailleur to move 40 . In this case, the electrical power of an electrical storage device described in more detail below can be used for at least one of the drive unit for applying the propulsion to the bicycle, a bicycle computer and / or a lamp. The rear derailleur 40 can also be an electrical switchgear 40 with a wireless or wired connection to the gear lever. The electrical switchgear 40 may have a wireless communication unit. The wireless communication unit communicates wirelessly with other components. The rear derailleur 40 is operated in response to the driver's shift. The electrical switchgear 40 may have a motor unit. A motor of the motor unit moves the movable element relative to the base element. The electrical switching mechanism can have an LED as a display. In this case, the electrical power of the electrical storage device can be used for at least one of the drive unit for applying the propulsion to the bicycle, a bicycle computer, a lamp, a motor of the rear derailleur 40 , an LED and / or a wireless device can be used. When the rear derailleur 40 has a motor, the electric power generated by the electric generator can be efficiently used to move the movable member 12 in relation to the base element 10 caused by the engine. In this connection, an electric wire can connect the electric accumulator and the motor unit. In addition, an electrical wire can also power the electrical generator 16 and connect the electrical storage device described in more detail below. The motor unit is preferably on the base member 10 arranged. This enables the movable element 12 to be kept relatively small.

When the rear derailleur 40 is wirelessly connected to the shift lever, the electrical energy generated by the electrical generator can be used to operate the wireless communication unit. It should also be mentioned that the wireless communication unit can comprise a receiver, a transmitter, or both a receiver and a transmitter. The wireless communication unit can for example be in the base element 10 , in the moving element 12 or in the connection structure 30th be housed. The wireless communication unit can be based on the base element 10 or the moving element 12 or the connection structure 30th be arranged.

Generally, when the electrical generator is used to generate electrical energy in response to the movement of the link structure or the movement of the chain guide 14th in relation to the movable element 12 is designed, it is possible to use electrical energy due to movements of the connection structure 30th or the movement of the chain guide 14th in relation to the movable element 12 to create. This electrical energy can be used to operate any electrical components. In addition, the current generator can also act as a damper, as already described in detail above.

As in 3 can be seen shows the bicycle rear derailleur 40 a basic element 10 which is designed for attachment to a bicycle frame. The rear derailleur 40 further comprises a movable element 12 on that in relation to the base element 10 is movably connected. There is also a connection structure 30th provided to the movable element 12 functional with the base element 10 connect to. Furthermore, an electric wire can pass through the connection structure 30th are performed to an electrical generator described in more detail below 16 and to electrically connect an electrical storage device to one another. The rear derailleur also has a chain guide 14th on, which is pivotable on the movable element 12 is attached. In other words, the chain guide 14th is designed to rotate around a pivot axis (not visible in 3 ) in relation to the moving element 12 to pan. An electric generator 16 is arranged around the pivot axis and designed to respond to the movement of the chain guide 14th generate electrical energy. In this way, the movable connection between the chain guide and the movable element is implemented in a simple manner and enables electrical energy to be generated easily and efficiently. The electrical generator can be integrated into an electrical generator unit, which can furthermore contain an acceleration mechanism. The pivot axis is provided so that the chain guide 14th about the pivot axis with respect to the movable element 12 is pivotable. In 3 is the generator 16 shown schematically and by a cover 18th covered (see 6th ), but can, for example, as in 8th shown in more detail and constructed as described below.

As in 4th can be seen, connects the connection structure 30th the moving element 12 functional pivotable with the base element 10 by at least one pivot pin. The at least one pivot pin comprises four pivot pins which are each arranged on each of the axes of the pivot member. Therefore, the pivot link axle has four pivot link axles. The at least one pivot pin is arranged around the pivot link axis. The pivot link axis is located in at least one of the connecting section in which the connecting structure 30th with the moving element 12 and the connection structure 30th with the base element 10 connected is. In particular, the outer member 30a the connection structure 30th a first end and a second end. One of the first end and the second end is pivotable with the movable member 12 connected by a first pivot pin, the other of the first end and the second end is pivotable to the base member 10 connected via a second pivot pin. The inner link 30b the connection structure 30th has a third end and a fourth end. One of the third end and the fourth end are pivotally connected to the movable member 12 Via a third pivot pin, the fourth end is pivotally connected to the base element 10 via a fourth pivot pin. The first end and the third end pivotably connect to different portions of the movable member 12 . The second end and the fourth end pivotably connect to different portions of the base member 10 .

Furthermore, an electric wire 54 through the connection structure 30th be led to the electric generator 16 and the electrical storage 46 to connect electrically to each other. As will be described in more detail below, with respect to the second embodiment, a spool is connected to the pivot axis in a manner that allows rotation of the spool in response to rotational movement of the chain guide 14th compared to the movable element 12 causes. The coil can for example be arranged coaxially and uniformly on the pivot axis and rotate with the pivot axis.

5 also serves to represent the outer panel 14a and the inner plate 14b the chain guide 14th as well as the leadership role 50 and the tensioner pulley 52 .

As in 6th can be seen, in the second embodiment, the generator is between the connection structure 30th and the movable element 12 intended. The connection structure 30th is designed to be pivotable about a pivot link axis, and the electrical generator is arranged about at least one of the pivot link axes. Consequently, the electrical generator is capable of generating electrical energy in response to the movement of the connecting structure 30th designed.

How out 7th As can be seen in the first embodiment, the electric generator has a rotor and a stator. The rotor is connected to one of the movable elements and the chain guide. The stator is connected to the other of the movable member and the chain guide. The stator preferably has magnets 20th , 22nd on that on the movable element 12 are attached. In the embodiment shown, the magnets are 20th , 22nd in their cross-section according to 7th essentially arcuate. They also extend axially along the inner surface of a cylindrical section 36 of the movable Elements 12 . The rotor preferably has a coil 24 on that with the connection structure 30th connected, causing rotation of the spool 24 in response to rotational movement of the connecting structure 30th in relation to the movable element 12 is effected. The sink 24 can be arranged coaxially uniformly on the pivot axis and rotate with the pivot axis.

The bicycle rear derailleur 40 can also have an electrical storage device 46 that is designed to store electrical energy generated by the electrical generator 16 is produced.

The electrical storage 46 can be based on at least one of the base element 10 , the moving element 12 , the connection structure 30th , a bracket 48 (please refer 7th ) of the rear derailleur 40 , the chain guide 14th and a bicycle frame 2 be arranged.

In particular, the electrical storage 46 away from the rear derailleur 40 be arranged, for example at any suitable position on the bicycle frame 2 such as a down tube, a seat post, a top tube, a seat stay, and the chain stay. The electric generator 16 and the electrical storage 46 are electrically connected to each other. This connection can be established directly or indirectly and makes it possible to temporarily store the electrical energy generated by the electrical generator. When the electrical storage 46 on the base element 10 is arranged, an electrical wire can through the connection structure 30th run to the electric generator 16 and the electrical storage 46 to connect electrically to each other.

The bicycle rear derailleur 40 may further comprise a motor unit for operating the movable element 12 in relation to the base element 10 is designed.

The motor unit can be the same as the electric generator 16 , or the motor unit can be disconnected from the electric generator 16 distinguish.

The bicycle rear derailleur can furthermore have a wireless communication unit that is designed to communicate with a bicycle component.

The electrical storage 46 can be configured to be detachable on at least one of the base element 10 , the moving element 12 and the connection structure 30th to be attached.

Details of the second embodiment of the electric generator 16 are better off 8th can be seen in the particular pivot link axis 26th can be seen what the connection structure 30th pivotable with the movable element 12 connects. Via a transmission 28 becomes the movement of the pivot link axis 26th that in terms of the connection structure 30th cannot pivot on the spool 24 transmitted, so that the above-described effect for generating electrical energy is achieved. The coil and the pivot link axis can be designed to be uniform with one another. In the illustrated embodiment, the coil extends 24 substantially U-shaped, with the vertical legs of the U extending axially to form axial legs 24a the coil 24 to build. In addition, there are radial legs on each vertical leg opposite the bottom of the U 24c 24b provided to the coil 24 with the gearbox 28 connect to. The magnets 20th , 22nd , in the 7th are more visible, extend axially at least over the length of the axial legs 24a the coil 24 . The pivot link axis may not be able to pivot with respect to the movable member.

As from the 7th and 8th emerges, the rotor and the stator face each other. The rotor and the stator can lie opposite one another in the radial direction with respect to the pivot link axis. The rotor and the stator can lie opposite one another in the axial direction with respect to the pivot link axis. In other words, the electric generator 16 , consisting of the magnets 20th , 22nd and the coil 24 , is about the pivot link axis 26th arranged. In particular, the coil represents 24 a rotor of the electric generator, and the magnets 20th , 22nd form the stator of it. In the embodiment shown, the rotor and the stator are in the radial direction with respect to the pivot link axis 26th across from.

In the modified embodiment of the second embodiment, as shown in FIG 9 shown is a first worm wheel 32 with the connection structure 30th connected to get along with the connection structure 30th to move. A second worm wheel also engages 34 into the first worm wheel 32 one to get used to the first worm wheel 32 to turn. There is also a wave 38 on the second worm wheel 34 attached to turn with it. In addition is a coil 24 on the shaft 38 attached and forms together with the movable element 12 attached magnets 20th , 22nd a generator 16 to generate electrical energy in response to movement of the interconnect structure 30th in relation to the movable element 12 . In the embodiment shown, the magnets extend 20th , 22nd and the axial legs 24a the coil 24 a few millimeters and a maximum of about 1 cm in the axial direction of the shaft 38 .

List of reference symbols

10:

Base element

12:

Movable element

14:

Chain guide

14a:

Outer panel

14b:

Inner plate

16:

Electric generator

18:

cover

20:

magnet

22:

magnet

24:

Kitchen sink

24a:

axial leg

24b:

radial leg

24c:

ground

26:

Swivel link axis

28:

transmission

30:

Connection structure

30a:

Outer link

30b:

Inner link

32:

First worm gear

34:

Second worm wheel

36:

cylindrical section

38:

wave

40:

Rear derailleur

42:

Rear sprocket

44:

Front sprockets

46:

Electric storage

48:

bracket

50:

Leadership role

52:

Tension pulley

54:

Electric wire

56:

rotor

58:

Swivel axis

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 20090291789 A1 [0003]
• US 20120322594 A1 [0004]
• JP H7251784 A [0004]

Claims (14)

Bicycle rear derailleur, comprising: a base member configured to be attached to a bicycle frame; a movable member movably disposed thereon with respect to the base member; a chain guide pivotally attached to the movable member; and an electrical generator configured to generate electrical energy in response to movement of the chain guide. Bicycle rear derailleur according to Claim 1 wherein the chain guide is configured to be pivotable about a pivot axis relative to the movable element; and the electric generator is arranged around the pivot axis. Bicycle rear derailleur according to Claim 1 or 2 wherein the electrical generator has a rotor and a stator; the rotor is connected to one of the movable member and the chain guide; and the stator is connected to the other of the movable member and the chain guide. Bicycle rear derailleur according to Claim 3 , wherein the rotor and the stator oppose each other in the radial direction with respect to the pivot axis. Bicycle rear derailleur according to Claim 3 wherein the rotor and the stator are opposed to each other in the axial direction with respect to the pivot axis. Bicycle rear derailleur according to one of the Claims 1 to 5 , further comprising: an electrical storage device configured to store electrical energy generated by the electrical generator. Bicycle rear derailleur according to Claim 6 , further comprising: a connection structure operably connecting the movable member to the base member; and wherein the electrical storage is arranged on at least one of the base member, the movable member, the connecting structure, and a bicycle frame. Bicycle rear derailleur according to Claim 6 or 7th , wherein the electrical generator and the electrical storage device are electrically connected to one another. Bicycle rear derailleur according to Claim 8 , further comprising: an electric wire that electrically connects the electric generator and the electric storage. Bicycle rear derailleur according to Claim 6 , further comprising: a connection structure operably connecting the movable member to the base member; and an electric wire passing through the connection structure to electrically connect the electric generator and the electric storage. Bicycle rear derailleur according to one of the Claims 1 to 10 , further comprising: a motor unit configured to operate the movable member with respect to the base member. Bicycle rear derailleur according to one of the Claims 1 to 11 , further comprising: a wireless communication unit configured to communicate with a bicycle component. Bicycle rear derailleur, having; a base member configured to be attached to a bicycle frame; a movable member movably disposed thereon with respect to the base member; a link structure operably pivotally connecting the movable member to the base member; an electrical generator configured to generate electrical energy in response to movement of the connection structure. Bicycle rear derailleur according to Claim 13 wherein the link structure is configured to pivot about a pivot link axis; and the electrical generator is arranged about the pivot link axis.

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