front derailleur

Abstract

Front derailleur, comprehensive: a base part (40) designed for attachment to a bicycle frame (14); a chain guide (42) comprising a first part (50) and a second part (52), wherein the first part (50) is designed such that it comes into contact with a chain (28) and shifts it laterally so that the chain (28) moves between the chainrings (30) away from the bicycle frame (14) in an outward direction, and wherein the second part (52) is designed such that it comes into contact with the chain (28) and shifts it laterally so that the chain (28) moves between the chainrings (30) in an inward direction towards the bicycle frame (14), wherein the first part (50) comprises a first connecting section (50b) and the second part (52) comprises a second connecting section (52b) which overlaps the first connecting section (50b); a connecting element (46) designed to movably couple the chain guide (42) to the base part (40); and a shaft part (56) designed in such a way that it couples the first connecting section (50b) to the second connecting section (52b), and is designed in such a way that it rotatably couples the chain guide (42) to the connecting element (46).

Description

[0001] The present invention relates to a derailleur, that is, a front derailleur or rear derailleur (which may also be referred to as a derailleur).

[0002] Cycling is becoming an increasingly popular leisure activity and a more widely used means of transportation. It has also evolved into a competitive sport enjoyed by both amateurs and professionals. The bicycle industry is constantly improving various bicycle components, regardless of whether the bicycle is used for leisure, transportation, or competitive sports. One component that has recently been redesigned is the derailleur. The derailleur moves the bicycle chain laterally to shift gears. There are two main types of derailleurs: a front derailleur and a rear derailleur (also known as a derailleur).

[0003] The object of the present invention is to propose a derailleur with improved chain guidance. This object is achieved by a derailleur according to the main claim.

[0004] According to the present invention, a (front or rear) derailleur is proposed to solve this problem, comprising a base part, a chain guide, a connecting element, and a shaft part. The base part is designed for mounting on a bicycle frame. The chain guide comprises a first part and a second part. The first part comprises a first connecting section. The second part comprises a second connecting section that overlaps the first connecting section. The connecting element is designed to movably couple the chain guide to the base part. The shaft part is designed to couple the first connecting section to the second connecting section and to rotatably couple the chain guide to the connecting element.

[0005] According to a second aspect of the present invention, the derailleur according to the first aspect is constructed such that the first part comprises a first guide section. The second part comprises a second guide section. The first connecting section projects from the first guide section. The second connecting section projects from the second guide section towards the first guide section.

[0006] According to a third aspect of the present invention, the chain guide according to the first or second aspect is constructed in such a way that it is designed to be movable relative to the base part between a retracted and an extended position, in which the chain guide is further away from the base part than in the retracted position. The shaft part is designed such that it moves away from the base part in a forward direction of the bicycle frame when the chain guide moves from the retracted position to the extended position.

[0007] According to a fourth aspect of the present invention, the derailleur according to one of the first to third aspects also has an additional connecting element designed to couple the chain guide to the base part such that the base part, the chain guide, the connecting element, and the additional connecting element define a four-bar linkage (or coupling, linkage; or four-bar linkage, coupling, linkage, connection). According to a fifth aspect of the present invention, the derailleur according to the fourth aspect is designed such that the additional connecting element has a cable attachment section to which an actuating cable is to be attached.

[0008] According to a sixth aspect of the present invention, the derailleur according to the fourth or fifth aspect is constructed such that the additional connecting element is arranged closer to the bicycle frame than the connecting element when the base part is attached to the bicycle frame.

[0009] According to a seventh aspect of the present invention, the derailleur is designed according to one of the first to sixth aspects such that the first connecting section and the second connecting section are provided at an upper end section of the chain guide.

[0010] According to an eighth aspect of the present invention, the derailleur according to one of the first to seventh aspects is designed such that the first connecting section has a first through-opening. The second connecting section has a second through-opening. The shaft section extends through the first through-opening and the second through-opening.

[0011] According to a ninth aspect of the present invention, the derailleur is constructed according to one of the first to eighth aspects such that the shaft part has a first flange. The first connecting section and the second connecting section are provided between the first flange and the connecting element.

[0012] According to a tenth aspect of the present invention, the derailleur according to the ninth aspect is constructed such that the connecting element has a first through-hole through which the shaft section extends. The shaft section has a second flange. The first connecting section, the second connecting section, and the connecting element are arranged between the first flange and the second flange.

[0013] According to an eleventh aspect of the present invention, the derailleur according to the ninth aspect is designed such that the shaft part has a second flange and a third flange. The third flange is arranged between the first flange and the second flange. The first connecting section and the second connecting section are provided between the first flange and the third flange.

[0014] According to a twelfth aspect of the present invention, the derailleur according to the eleventh aspect is constructed such that the connecting element has a first through-hole through which the shaft section extends. The connecting element is arranged between the third flange and the second flange.

[0015] According to a thirteenth aspect of the present invention, the derailleur according to one of the first to third aspects further comprises an additional connecting element configured to rotatably couple the first part to the base part. The second connecting section of the second part is arranged between the connecting element and the first connecting section of the first part.

[0016] According to a fourteenth aspect of the present invention, the derailleur is constructed according to one of the first to thirteenth aspects in such a way that the first connecting section is configured to be in contact with the second connecting section.

[0017] According to a fifteenth aspect of the present invention, the derailleur according to one of the first to fourteenth aspects is constructed such that the first connecting section has an upstream end section and a downstream end section. The downstream end section is arranged downstream of the upstream end section in the chain drive direction. In a state where the base part is attached to the bicycle frame, the shaft part is located closer to the upstream end section than to the downstream end section in the chain drive direction.

[0018] The invention and many associated advantages can be more fully understood by referring to the following detailed description, taking into account the accompanying drawings, in which: Fig. 1 shows a side view of a bicycle equipped with a derailleur according to an exemplary embodiment; Fig. 2 shows an enlarged side view of the outside of a part of the bicycle in the area of ​​the derailleur; Fig. 3 a perspective rear view of the in Fig. The derailleur shown in section 2 is; Fig. 4 a cross-sectional view of the derailleur along line IV-IV from Fig. 3 shows; Fig. 5 a cross-sectional view of the derailleur along line VV from Fig. 3 shows; Fig. 6 a perspective rear view of the in Fig. The derailleur shown in section 2 is; Fig. 7 a perspective exploded view of a preload mechanism of the in Fig. The derailleur shown in the 6 illustrations is shown; Fig. 8 a perspective view of a first part of the in Fig. The preload mechanism shown in section 7 is; Fig. 9 a perspective view of the first part of the in Fig. The preload mechanism shown in section 7 is illustrated; Fig. 10 a cross-sectional view of the derailleur along line XX from Fig. 6 represents; Fig. 11 a perspective partial view of the in Fig. 6 derailleur shown; Fig. 12 a perspective partial view of the in Fig. 6 derailleur shown; Fig. 13 schematically the procedure for assembling the preloading mechanism of the in Fig. 6 depicted derailleur; Fig. 14 schematically the procedure for assembling the preloading mechanism of the in Fig. 6 depicted derailleur; Fig. 15 schematically the procedure for assembling the preloading mechanism of the in Fig. The derailleur shown in section 6 is shown, and Fig. 16 schematically the procedure for assembling the preloading mechanism of the in Fig. 6 derailleurs are illustrated.

[0019] The exemplary embodiments are now described with reference to the accompanying drawings, whereby the same reference numerals consistently indicate corresponding or identical elements in the different representations.

[0020] It will initially be on Fig. Reference is made to Figure 1, which shows a bicycle 10 equipped with a derailleur 12 according to an exemplary embodiment. As will be explained below, the derailleur 12 is a front derailleur designed to be removable and reattached to a bicycle frame 14. The bicycle 10 has a front fork 16, a rear wheel 18, a front wheel 20, handlebars 22, and a saddle 24. The handlebars 22 are attached to a head tube or steering stem of the front fork 16. In the exemplary embodiment shown here, a gear shifter 26 (or gear selector or switch) is attached to the handlebars 22 for actuating the derailleur 12. This shifter laterally moves a chain 28 between three front sprockets or chainrings 30. The gear shifter 26 is functionally connected to the derailleur 12 by means of an actuating cable 32.For the expert in the field of bicycle technology, this disclosure makes it clear that instead of a mechanical actuating device such as a gear shifter, any gear shifter that operates with an electrical actuating device can be used to actuate the front derailleur 12. Here, the gear shifter 26 is shown on the right side of the handlebar 22. However, the gear shifter 26 can be positioned on either the left or right side of the handlebar, depending on requirements or preference, to actuate the front derailleur 12.

[0021] In this embodiment, the following directional terms "front," "back," "forward," "backward," "left," "right," "across," "upward," and "downward," as well as other similar directional designations, refer to directions relative to the rider, who, for example, is seated on the saddle 24 of the bicycle 10 facing the handlebars 22. Accordingly, these terms should be understood, in the sense in which they are used to describe the derailleur 12, as referring to the bicycle 10 when it is being ridden in an upright position on a horizontal surface, as is the case in Fig. 1 is shown.

[0022] Bicycle 10 can be any type of bicycle and can be constructed in various ways. Since bicycles and their various components are generally known in the field of bicycle technology, detailed descriptions and illustrations relating to bicycle 10 and its various components are omitted, with the exception of the front derailleur 12 and the components or elements associated with it. In other words, this description only explains and / or illustrates the front derailleur 12 and those components or parts of bicycle 10 that are related to it.

[0023] It will now be on Fig. Reference is made to Figure 2, which shows that the front derailleur 12 is mounted on a seat tube 34 of the bicycle frame 14. However, it is clear to a person skilled in bicycle technology from this description that the front derailleur 12 can, if necessary and / or desired, be mounted on a suspension tube 36 of the bicycle frame 14 by means of a lower bracket or other mounting structure. Furthermore, if necessary and / or desired, the components of the front derailleur 12 can also be attached to a rear derailleur or a rear derailleur.

[0024] How Fig. As illustrated in Figure 2, the bicycle 10 has a crank axle A1 and a rear wheel axle A2, which runs parallel to the crank axle A1. The crank axle A1 is defined by the suspension tube 36 of the bicycle frame 14. In other words, the crank axle A1 corresponds to a longitudinal center axis of the suspension tube 36 and thus also corresponds to the center of rotation of the chainrings 30. According to the illustration in Fig. 2 the rear wheel axle A2 is defined by a central axle 38 of the rear wheel 18.

[0025] According to the representation in Fig. Figure 2 shows that the derailleur 12 comprises a base part 40, a chain guide 42, a connecting element 46, an additional connecting element 44, and a pretensioning mechanism 48. The base part 40 is made of a rigid material, for example, a metallic or fiber-reinforced material. The base part 40 is designed for attachment to the bicycle frame 14. In the illustrated embodiment, the base part 40 is attached to the seat tube 34 of the bicycle frame 14 in such a way that the position of the base part 40, relative to the seat tube 34, is adjustable in an adjustment direction D1. More precisely, the base part 40 includes a clamping section 41, which is designed to be attached to the seat tube 34. The adjustment direction D1 is defined along a central axis A3 of the seat tube 34.For the expert in the field of bicycle technology, it is clearly evident from the present description that the basic part 40 can also be designed differently as needed and / or upon request. For example, the basic part 40 can be attached to the suspension tube 36 by means of the lower bracket, if required and / or upon request.

[0026] According to the representation in Fig. In the illustrated embodiment, the actuating cable 32 has an outer sheath 32a and an inner cable 32b that is guided through the outer sheath 32a. Thus, the actuating cable 32 represents a conventional Bowden cable. The inner cable 32b is, for example, slidably arranged inside the outer sheath 32a. The inner cable 32b is connected to the additional connecting element 44.

[0027] According to the representation in Fig. 3. The chain guide 42 is designed such that, relative to the base part 40, it is movable between a retracted position P1 and an extended position P2, in which the chain guide 42 is further away from the base part 40 than in the retracted position P1. The chain guide 42 is designed to guide the chain 28. The chain guide 42 (the first part 50 and / or the second part 52) ​​is made of a rigid material such as a metallic material or a resin material. For example, the chain guide 42 (the first part 50 and / or the second part 52) ​​is made of aluminum, an aluminum alloy, iron, stainless steel, or a synthetic resin material.

[0028] The chain guide 42 has a first part 50 and a second part 52. The first part 50 and the second part 52 are made of a metallic material such as aluminum, an aluminum alloy, iron, or stainless steel. For a person skilled in bicycle technology, this description makes it clear that the first part 50 can be made of a different material than the second part 52.

[0029] The first part 50 is designed to come into contact with the chain 28 and shift it laterally so that the chain 28 moves between the chainrings 30 away from the bicycle frame 14 in a direction D21 outwards. The outwards direction D21 is one of the transverse directions D2 of the bicycle frame 14. The first part 50 comprises a first guide section 50a and a first connecting section 50b. The first connecting section 50b projects from the first guide section 50a. The first connecting section 50b is bent relative to an end of the first guide section 50a. However, it is clear to a person skilled in bicycle technology from this description that the first connecting section 50b does not necessarily have to project from the first guide section 50a. And the first connecting section 50b does not necessarily have to be bent relative to the first guide section 50a.The first connecting section 50b can also be designed differently, depending on requirements and / or wishes. For example, if required and / or desired, the first connecting section 50b can be a separate element from the first guide section 50a and connected to the first guide section 50a using other suitable fastening techniques such as welding, riveting or bolting.

[0030] The second part 52 is designed to come into contact with the chain 28 and shift it laterally so that the chain 28 moves between the chainrings 30 in a direction D22 inwards towards the bicycle frame 14. The inward direction D22 represents the other transverse direction D2 and is opposite to the outward direction D21. The second part 52 comprises a second guide section 52a and a second connecting section 52b, which overlaps the first connecting section 50b. The second connecting section 52b projects from the second guide section 52a towards the first guide section 50a. The second connecting section 52b is bent from an end piece of the second guide section 52a. However, it is clear from this description to a person skilled in bicycle technology that the second connecting section 52b does not necessarily have to project from the second guide section 52a.And the second connecting section 52b does not necessarily have to be bent from the second guide section 52a. Depending on requirements and / or preference, the second connecting section 52b can also be designed differently. For example, if required and / or desired, the second connecting section 52b can be a separate part from the second guide section 52a and connected to the second guide section 52a using other suitable joining techniques such as welding, riveting, or bolting.

[0031] In the illustrated embodiment, the first part 50 is arranged closer to the bicycle frame 14 than the second part 52. The first guide section 50a is also arranged closer to the bicycle frame 14 than the second guide section 52a. The first guide section 50a is spaced apart from the second guide section 52a, creating a chain guide slot 42a through which the chain 28 runs in the chain drive direction D3. With respect to the derailleur 12, the chain drive direction D3 is defined as the direction in which the chain 28 is driven by the rider's pedaling force, which propels the bicycle 10 forward.

[0032] The second part 52 further comprises a third connecting section 52c. The third connecting section 52c is arranged at a lower end region of the second guide section 52a. The third connecting section 52c is coupled to a lower end region of the first guide section 50a by means of a fastening element 54 (for example, by means of a rivet). In the illustrated embodiment, the first part 50 and the second part 52 are separate components. Accordingly, compared to a chain guide in which the first part 50 and the second part 52 are formed as an integral, one-piece element, the machinability of the first part 50 and the second part 52 is improved.Furthermore, since the first part 50 and the second part 52 are separate components, the thickness of the coating on the first part 50 can differ from the thickness of the coating applied to the second part 52. Therefore, the thickness of the coating on the first part 50 or the second part 52 can be reduced according to the abrasion depth on the first part 50 or the second part 52, respectively, thereby making the chain guide 42 lighter. Similarly, since the first part 50 and the second part 52 are separate components, the thickness of the first part 50 can differ from the thickness of the second part 52. Therefore, the thickness of the first part 50 or the second part 52 can be reduced according to the abrasion depth on the first part 50 or the second part 52, respectively, thereby making the chain guide 42 lighter.However, for a specialist in bicycle technology, it is clearly evident from this description that the first part 50 can be formed integrally with the second part 52 as a single component. For example, the third connecting section 52c can be integrally formed with the lower end region of the first guide section 50a as a single component.

[0033] According to the representation in Fig. In Figure 3, the first connecting section 50b and the second connecting section 52b are provided at an upper end region of the chain guide 42. However, it is clear from this description to a person skilled in bicycle technology that the first connecting section 50b and the second connecting section 52b can also be provided in a section other than the upper end region of the chain guide 42. The first connecting section 50b is arranged at an upper end region of the first guide section 50a. The second connecting section 52b is provided at an upper end region of the second guide section 52a. In the illustrated embodiment, the first connecting section 50b is arranged below the second connecting section 52b.

[0034] According to the representation in Fig. In section 4, the first connecting section 50b is coupled to the second connecting section 52b by means of a fastening element 55 and a shaft section 56. The fastening element 55 is, for example, a rivet. The shaft section 56 is designed to couple the first connecting section 50b to the second connecting section 52b, while simultaneously allowing the chain guide 42 to rotate with the connecting element 46. Because the shaft section 56 allows the chain guide 42 to rotate with the connecting element 46, in addition to coupling the first connecting section 50b to the second connecting section 52b, the construction of the derailleur 12 can be simplified.

[0035] The shaft section 56 comprises a main shaft section 56a, a first flange 56b, a second flange 57, and a third flange 56c. The shaft section 56 is made of a rigid material, such as a metal. For example, the shaft section 56 is made of aluminum, an aluminum alloy, iron, or stainless steel. The main shaft section 56a extends along a first axis of rotation A11. The first flange 56b is located at a lower end of the main shaft section 56a. The first flange 56b has an outer diameter that is larger than the outer diameter of the lower end of the main shaft section 56a. The first flange 56b is a riveted section and is formed as an integral part of the main shaft section 56a.However, for a specialist in bicycle technology, it is clear from this description that the first flange 56b can be designed in a different form than a crimped section. The first flange 56, as well as the second flange 57, can be a separate element from the main shaft section 56a. The first flange 56b can also be a separate element such as a retaining ring or a nut, designed so that it can be detachably attached to the main shaft section 56a, for example.

[0036] The second flange 57 is a retaining ring (which can also be called a spring ring or snap ring) designed for detachable attachment to the main shaft section 56a. The second flange 57 is arranged in a mounting groove 56d provided at the upper end of the main shaft section 56a. The second flange 57 has an outer diameter larger than the outer diameter of the upper end of the main shaft section 56a. The second flange 57 prevents the connecting element 46 from detaching from the shaft section 56a. It is clear from this description to a person skilled in bicycle technology that the second flange 57 can be designed in a different form than a retaining ring. For example, the second flange 57 can be a nut. Furthermore, the second flange 57 can be integrally formed as a single piece with the main shaft section 56a.The second flange 57, like the first flange 56b, could for example be a crimped section.

[0037] The third flange 56c is arranged between the first flange 56b and the second flange 57. The third flange 56c has an outer diameter that is larger than the outer diameter of the main shaft section 56a. The third flange 56c is formed integrally as a single piece within the main shaft section 56a. However, it is clear from this description to a person skilled in bicycle technology that the third flange 56c can also be designed differently. The third flange 56c can be provided as a separate component, such as a retaining ring, designed to be detachably attached to the main shaft section 56a. However, it is clear from this description to a person skilled in bicycle technology that the third flange 56c can be omitted if necessary and / or desired.

[0038] The connecting element 46 has a first through-opening 46a through which the shaft section 56 extends. A sleeve 47 is attached to the shaft section 56 and is located in the first through-opening 46a. The first connecting section 50b includes a first through-opening 50i. The second connecting section 52b has a second through-opening 52d. The shaft section 56 extends through the first through-opening 50i and the second through-opening 52d. The outer diameter of the first flange 56b is larger than the inner diameter of the first through-opening 50i and the second through-opening 52d. The outer diameter of the second flange 57 is larger than the inner diameter of the first through-opening 46a.The outer diameter of the third flange 56c is larger than the inner diameter of the first through-hole 50i, the second through-hole 52d, and the first through-connecting opening 46a. From this description, it is clear to a person skilled in bicycle technology that the first through-hole 50i can also be a recess or a cutout through which the shaft section 56 extends instead of through the first through-hole 50i. Furthermore, the second through-hole 52d can be a recess or a cutout through which the shaft section 56 is guided instead of through the second through-hole 52d.

[0039] The first connecting section 50b, the second connecting section 52b, and the connecting element 46 are arranged between the first flange 56b and the second flange 57. More precisely, the first connecting section 50b and the second connecting section 52b are arranged between the first flange 56b and the connecting element 46. The connecting element 46 is positioned between the third flange 56c and the second flange 57. The first connecting section 50b is attached to the second connecting section 52b using the first flange 56b and the third flange 56c, forming an integral chain guide 42.The first connecting section 50b and the second connecting section 52b are inserted (laid in) between the first flange 56b and the third flange 56c without forming a gap. On the other hand, the connecting element 46 is rotatably positioned between the second flange 57 and the third flange 56c relative to the chain guide 42. The connecting element 46 is inserted (laid in) between the second flange 57 and the third flange 56c, forming a gap, so that it is rotatable relative to the chain guide 42. In the illustrated embodiment, the second connecting section 52b of the second part 52 is positioned between the connecting element 46 and the first connecting section 50b of the first part 50. From this description, it is clear to those skilled in the art of bicycle technology that the first connecting section 50b can be positioned between the connecting element 46 and the second connecting section 52b.The first connecting section 50b is designed to come into contact with the second connecting section 52b. From the present description, it is clear to a person skilled in the art of bicycle technology that at least one intermediate part can be provided between the first connecting section 50b and the second connecting section 52b.

[0040] According to the representation in Fig. 4 The shaft section 56 is provided on an upstream side of the fastening element 55 in the chain drive direction D3. The terms "upstream" and "downstream" are defined here with reference to the chain drive direction D3. The first connecting section 50b has an upstream end section 50j and a downstream end section 50k. The downstream end section 50k is arranged downstream of the upstream end section 50j in the chain drive direction D3. The shaft section 56 is located closer to the upstream end section 50j than to the downstream end section 50k in the chain drive direction D3, specifically in the state in which the base part 40 is mounted on the bicycle frame 14. It is clear to a person skilled in bicycle technology from this description that the shaft section 56 can also be arranged in a different position within the first connecting section 50b and the second connecting section 52b.The shaft section 56 can, for example, be arranged closer to the downstream end section 50k than to the upstream end section 50j in the chain drive direction D3. As shown in . Fig. In section 5, the connecting element 46 is designed to movably couple the chain guide 42 to the base part 40. More precisely, the connecting element 46 is designed to connect the chain guide 42 to the base part 40 in such a way that the chain guide 42 is movable relative to the base part 40 between the retracted position P1 and the extended position P2. The connecting element 46 has a first connecting end section 46b and a second connecting end section 46c. The second connecting end section 46c is located opposite the first connecting end section 46b. The first connecting end section 46b is connected to the chain guide 42 in such a way that it is rotatable about a first axis of rotation A11 by the shaft section 56. The second connecting end section 46c is rotatably connected to the base part 40 by a first connecting shaft 58 about a second axis of rotation A12.

[0041] According to the representation in Fig. In Figure 5, the additional connecting element 44 is designed such that it movably couples the chain guide 42 to the base part 40. More precisely, the additional connecting element 44 is designed to rotatably couple the first part 50 to the base part 40. The additional connecting element 44 is rotatably coupled to the base part 40 by means of a pivot axis 60 about a third pivot axis A13. The chain guide 42 is rotatably connected to the additional connecting element 44 via the pivot axis 60. The additional connecting element 44 is rotatably connected to the base part 40 about a fourth pivot axis A14 by means of a second connecting shaft 62. As shown in Figure 5, the additional connecting element 44 is rotatably connected to the base part 40 by means of a second connecting shaft 62 about a fourth pivot axis A14. Fig. 5. The additional connecting element 44 is designed to couple the chain guide 42 to the base part 40 in such a way that the base part 40, the chain guide 42, the additional connecting element 44, and the connecting element 46 form a four-bar linkage (or four-rod linkage). From the present description, it will be clear to a person skilled in bicycle technology that other linkage or joint constructions or connections can also be used in the derailleur 12.

[0042] When viewed along the crank axis A1, the lines run as shown in the illustration. Fig. 2. The first axis of rotation A11, the second axis of rotation A12, the third axis of rotation A13, and the fourth axis of rotation A14 are essentially parallel to each other. When viewed along the crank axis A1, and when the derailleur 12 is mounted on the bicycle frame 14 to correctly position the chain 28, the first axis of rotation A11, the second axis of rotation A12, the third axis of rotation A13, and the fourth axis of rotation A14 are neither parallel nor perpendicular to the adjustment direction D1. When viewed along the crank axis A1, the first axis of rotation A11, the second axis of rotation A12, the third axis of rotation A13, and the fourth axis of rotation A14 are inclined at a first angle B1 relative to the adjustment direction D1 when the derailleur 12 is mounted on the bicycle frame 14 to correctly position the chain 28. This first angle B1 can be set, for example, within a range between approximately zero degrees and approximately 30 degrees.Furthermore, when viewed along the crank axis A1, the first pivot axis A11, the second pivot axis A12, the third pivot axis A13, and the fourth pivot axis A14 are inclined relative to a virtual plane E at a second angle B2, in a state when the front derailleur 12 is attached to the bicycle frame 14 to correctly shift the chain 28. The second angle B2 can be adjusted, for example, within a range between approximately 80 degrees and approximately 100 degrees. The virtual plane E is defined here as being parallel to the crank axis A1 of the rear wheel axle A2.

[0043] Now, the focus is shifting back to... Fig. Reference is made to the additional connecting element 44, which is designed to move in the forward-backward direction D4 of the bicycle frame 14 when the chain guide 42 moves between the retracted position P1 and the extended position P2. When viewed along the vertical of the bicycle frame 14, the forward-backward direction D4 essentially coincides with the chain drive direction D3 in a state when the derailleur 12 is attached to the bicycle frame 14. In this state, the additional connecting element 44 is closer to the bicycle frame 14 than the connecting element 46 when the base part 40 is attached to the bicycle frame 14. The additional connecting element 44 includes a cable attachment section 65 for attaching the actuating cable 32. The cable attachment section 65 is designed to be pulled over the actuating cable 32 in the forward direction D41 of the bicycle frame 14.The forward direction D41 is one of the forward-backward directions D4.

[0044] When the cable fastening section 65 is pulled forward in the direction D41 via the actuating cable 32, the additional connecting element 44 rotates about the fourth axis of rotation A14 relative to the base part 40. This causes the chain guide 42 to move from the retracted position P1 to the extended position P2 in the forward direction D41 against the tensioning force of the pretensioning mechanism 48. More precisely, when the actuating cable 32 is pulled, the chain guide 42 moves forward in the direction D41 from the retracted position P1 to the extended position P2 and away from the bicycle frame 14 in the outward direction D22.

[0045] When the tensile force acting on the actuating cable 32 is released, the chain guide 42 moves from the extended position P2 to the retracted position P1. More precisely, the chain guide 42 moves in the reverse direction D42 from the extended position P2 to the retracted position P1 and moves in the inward direction D22 when the actuating cable 32 is released. In this way, the chain guide 42 selectively positions the chain 28 over one of the chainrings 30 in response to the actuation of the gearshift lever 26. The reverse direction D42 is the other of the forward-reverse directions D4, which is opposite to the forward direction D41.

[0046] For a person skilled in bicycle technology, it is clear from the present description that the chain guide 42 can be designed to move away from the base part 40 in the reverse direction D42 of the bicycle frame 14 when the chain guide 42 moves from the retracted position P1 to the extended position P2. It is also clear to a person skilled in bicycle technology from the present description that the cable fastening section 65 can be mounted on the connecting element 46. Furthermore, an electric drive device can be used in the derailleur 12, instead of the actuating cable 32 and the cable fastening section 65, to move the chain guide 42 relative to the base part 40.

[0047] According to the representation in Fig. In section 5, the shaft section 56 is designed such that it moves away from the base section 40 in the forward direction D41 of the bicycle frame 14 when the chain guide 42 moves from the retracted position P1 to the extended position P2. However, it is clear from this description to a person skilled in bicycle technology that the shaft section 56 can also be designed to move away from the base section 40 in the backward direction D42 of the bicycle frame 14 when the chain guide 42 moves from the retracted position P1 to the extended position P2. Since the shaft section 56 moves forward relative to the base section 40 in the forward direction D4, a connecting element to which the first connecting section 50b is connected with the second connecting section 52b can be arranged on a pivot axis (i.e., the first pivot axis A11) of the chain guide 42 and the connecting element 46.This makes it possible for the shaft part 56 to function both as a pivot axis and as a connecting part.

[0048] According to the representation in Fig. 5. The positions of the end shift stages of the chain guide 42 relative to the base part 40 are adjustable by turning an adjusting screw 63a for low gears and an adjusting screw 63b for high gears. In this way, the range of motion of the chain guide 42 relative to the base part 40 can be adjusted. In particular, the adjusting screw 63a for the low gears comes into contact with a contact surface (or abutment) of the connecting element 46 when the chain guide 42 is in a position for the low gears (i.e., the retracted position P1). The adjusting screw 63b for the high gears comes into contact with a contact surface (or abutment) of the connecting element 46 when the chain guide 42 is in a position for the high gears (i.e., in the extended position P2).In the illustrated embodiment, the contact surface / abutment of the connecting element 46 is pressed against the adjusting screw 63a for the low gear stages by the preload force of the preloading mechanism 48.

[0049] According to the representation in Fig. 6. The pretensioning mechanism 48 is designed to tension (press upon) the additional connecting element 44 in such a way that the chain guide 42 is in the retracted position P1 or in the extended position P2. In the illustrated embodiment, the pretensioning mechanism 48 is designed to press upon the additional connecting element 44 such that the chain guide 42 is in the retracted position P1. However, it is clear to a person skilled in bicycle technology from this description that the pretensioning mechanism 48 can also be configured to tension the additional connecting element 44 such that the chain guide 42 is in the extended position P2.

[0050] The pretensioning mechanism 48 comprises a pretensioning element 64, an intermediate link 66, and a support element 68. The pretensioning element 64 has a first end section 64b and a second end section 64c. The intermediate link 66 is provided separately from the chain guide 42 and the additional connecting element 44 so that it transmits the pretensioning force of the pretensioning element 64 from the first end section 64b via the intermediate link 66 either to the chain guide 42 or to the additional connecting element 44. In the illustrated embodiment, the intermediate link 66 is designed such that it transmits the pretensioning force of the pretensioning element 64 from the first end section 64b to the additional connecting element 44. However, it is clear from this description to those skilled in the art of bicycle technology that the intermediate link 66 can also be designed such that it transmits the pretensioning force of the pretensioning element 64 from the first end section 64b to the chain guide 42.The pretensioning element 64, the intermediate link 66 and the support element 68 are designed to be rotatable about the third axis of rotation A13 with respect to the chain guide 42 and the additional connecting element 44.

[0051] According to the representation in Fig. In Figure 5, the intermediate link 66 is provided on a first side S1 of the chain guide 42. The first side S1 is opposite a second side S2 of the chain guide 42 and closer to the bicycle frame 14 than the second side S2 when the base part is attached to the bicycle frame 14. However, it is clear to a person skilled in bicycle technology from this description that the intermediate link 66 can also be arranged on the second side S2 of the chain guide 42. The intermediate link 66 lies above the pretensioning element 64. The support element 68 is provided below the pretensioning element 64. However, it is clear to a person skilled in bicycle technology from this description that the intermediate link 66 can also lie below the pretensioning element 64 and the support element 68 can be arranged above the pretensioning element 64. According to the illustration in Fig. 7 The preload element 64 comprises a torsion spring with a cylindrical part 64a for generating a preload force about the third axis of rotation A13. However, it is clear from this description to those skilled in the art of bicycle technology that the preload element 64 can also be provided in the form of a component other than a torsion spring to generate the preload force. The first end section 64b extends from the cylindrical part 64a along the third axis of rotation A13. The second end section 64c extends from the cylindrical part 64a in the radial direction of the cylindrical part 64a. In the illustrated embodiment, the first end section 64b is provided at an upper end section of the cylindrical part 64a, while the second end section 64c is arranged at a lower end section of the cylindrical part 64a. The first end section 64b is designed to engage with the intermediate member 66.The second end section 64c is designed for engagement with the chain guide 42. The cylindrical part 64a of the pretensioning part 64, the intermediate link 66 and the support element 68 are arranged on the axis of rotation 60.

[0052] The intermediate member 66 comprises a first part 70 and a second part 72. The first part 70 is designed to engage with the first end section 64b of the pretensioning part 64. The second part 72 is designed to engage with the additional connecting element 44 or the chain guide 42 and is designed to be detachably attached to the first part 70. In the illustrated embodiment, the second part 72 has a pin that engages in a pin engagement opening 76e ( Fig. 9) is designed as described below. The first part 70 comprises an inner section 74 and an outer section 76. The inner section 74 is designed to lie inside the cylindrical part 54a of the preloading part 64. The inner section 74 projects from the outer section 76 along the third axis of rotation A13. The inner section 74 is designed to contact an inner circumferential surface of the cylindrical part 64a in the radial direction. The outer section 76 is designed to be positioned outside the cylindrical part 64a. The outer section 76 is designed to engage with the first end section 64b of the preloading part 64. The outer section 76 is designed to contact a surface at the upper end of the cylindrical part 64a in the axial direction. The second part 72 is designed to be detachably attached to the outer section 76.In the illustrated embodiment, the first part 70 consists of a rigid material, such as a metallic material. For example, the first part 70 is made of aluminum, an aluminum alloy, iron, or stainless steel. Similarly, the second part 72 is made of a rigid material, such as a metallic material. For example, the second part 72 consists of aluminum, an aluminum alloy, iron, or stainless steel.

[0053] The first part 70 has a through-opening 70a through which the axis of rotation 60 extends. The through-opening 70a runs along the third axis of rotation A13 and is provided in the inner section 74 and the outer section 76. In the illustrated embodiment, a sleeve 78 extends through the through-opening 70a. The axis of rotation 60 extends through the sleeve 78.

[0054] The outer section 76 has an engagement groove 76a into which the first end section 64b of the pretensioning element 64 engages. However, it is clear to a person skilled in bicycle technology from this description that the inner section 74 can be designed to engage with the first end section 64b of the pretensioning element 64 instead of the outer section 76. It is also clear to a person skilled in bicycle technology from this description that the inner section 74 can be omitted.

[0055] The support element 68 is designed to support a lower end section of the prestressing element 64. The support element 68 is located on the opposite side of the intermediate member 66, relative to the prestressing element 64. In the illustrated embodiment, the support element 68 is made of a rigid material, such as a metallic material. For example, the support element 68 is made of aluminum, an aluminum alloy, iron, or stainless steel. The support element has an end support area 68a, an intermediate area 68b, and an inner support area 68c.

[0056] The end support area 68a is designed to be positioned outside the cylindrical part 64a of the preload element 64. The end support area 68a is configured to contact a lower end surface of the preload element 64 in the axial direction D5 of the axis of rotation 60. The axial direction D5 runs parallel to the third axis of rotation A13. The intermediate area 68b and the inner support area 68c are designed to lie within the cylindrical part 64. The support element 68 includes a through-opening 68d that extends along the third axis of rotation A13. The axis of rotation 60 passes through the through-opening 68d along the third axis of rotation A13. It will be apparent to those skilled in the art of bicycle technology from this description that the support element 68 can be omitted if necessary or desired.

[0057] According to the representation in Fig. In section 8, the outer section 76 has a tool engagement section 76b, into which a tool can be engaged when the derailleur 12 is assembled. The tool engagement section 76b comprises a plurality of tool engagement openings 76c and 76d, into which the tool can engage during assembly of the derailleur 12. However, it is clear to a person skilled in bicycle technology from the present description that the tool engagement section 76b can have at least one tool engagement opening into which the tool is inserted during assembly of the derailleur 12.

[0058] Each of the openings for tool engagement 76c and 76d extends in the radial direction of the outer section 76. The radial direction of the outer section 76 is perpendicular to the third axis of rotation A13. Each of the openings for tool engagement 76c and 76d is an elongated, through opening. However, it is clear to a person skilled in bicycle technology from this description that each of the openings for tool engagement 76c and 76d can also be configured differently, for example, as a blind hole, a recess, or a groove instead of a through opening. In the illustrated embodiment, the openings for tool engagement 76c and 76d each have the same shape. It is clearly evident to a person skilled in bicycle technology from this description that the openings for tool engagement 76c and 76d can also be shaped differently.

[0059] How Fig. 8 and Fig. As shown in Figure 9, each of the openings for tool engagement 76c and 76d extends from an outer circumference of the outer section 76 to the through-opening 70a. The opening for tool engagement 76c is formed at a distance from the opening for tool engagement 76d in the circumferential direction of the outer section 76. In the illustrated embodiment, the opening for tool engagement 76c is located closer to the engagement groove 76a than the opening for tool engagement 76d.

[0060] According to the representation in Fig. 9 The outer section 76 further has the pin engagement opening 76e. The pin engagement opening 76e is a through opening that extends radially from the outer circumferential line of the outer section 76 to the through opening 70a. The second part 72 ( Fig. 7) engages in the pin engagement opening 76e. The second part (pin) 72 is inserted into the pin engagement opening 76e when the derailleur 12 is assembled. From the present description, it is clear to a person skilled in bicycle technology that the pin engagement opening 76e can also be designed in a different form, for example as a blind hole, a recess, or a groove instead of a through opening.

[0061] According to the representation in Fig. The inner section 74 has a first outer diameter L1. The outer section 76 has a second outer diameter L2, which is larger than the first outer diameter L1. The end support area 68a has a third outer diameter L3. The intermediate section 68b has a fourth outer diameter L4. The inner support area 68c has a fifth outer diameter L5. The third outer diameter L3 is larger than the fourth outer diameter L4 and the fifth outer diameter L5. The fourth outer diameter L4 is, in turn, larger than the fifth outer diameter L5. The third outer diameter L3 is essentially the same size as the second outer diameter L2. The cylindrical part 64a of the preloading part 64 has a sixth outer diameter L6 and an inner diameter L7.The second outer diameter L2 and the third outer diameter L3 are essentially the same size as the sixth outer diameter L6 and larger than the inner diameter L7.

[0062] According to the representation in Fig. The additional connecting element 44 comprises distal end sections 80a and 80b. The distal end sections 80a and 80b are rotatably connected to the chain guide 42. The distal end section 80b is spaced apart from the distal end section 80a along the third axis of rotation A13. The distal end sections 80a and 80b are each rotatably connected to the chain guide 42 by means of the axis of rotation 60. The pretensioning mechanism 48 is arranged here between the distal end sections 80a and 80b in the axial direction D5. The outer section 76 is arranged between the pretensioning part 64 and the additional connecting element 44 in the axial direction D5 of the axis of rotation 60. More precisely, the outer section 76 is provided between the distal end section 80a and the pretensioning part 64 (the cylindrical part 64a) in the axial direction D5. The end support area 68a lies between the distal end section 80b and the prestressing part 64 (the cylindrical part 64a).

[0063] The first part 50 of the chain guide 42 comprises a first support area 50c and a second support area 50d. The second support area 50d is spaced apart from the first support area 50c along the third axis of rotation A13. The distal end section 80a is rotatably connected to the first support area 50c about the third axis of rotation A13 by means of the axis of rotation 60. The distal end section 80b is rotatably connected to the second support area 50d about the third axis of rotation A13 by means of the axis of rotation 60. The distal end sections 80a and 80b are arranged between the first support area 50c and the second support area 50d along the third axis of rotation A13.

[0064] The first support area 50c has a first through support opening 50e. The distal end section 80a has a through opening 80c. The axis of rotation 60 extends through the first through support opening 50e and the through opening 80c. The sleeve 78 is provided in the through opening 80c. The second support area 50d is provided with a second through support opening 50f. The distal end section 80b has a through opening 80d. The axis of rotation 60 now runs through the second through support opening 50f and the through opening 80d. A sleeve 82 is attached to the axis of rotation 60 and is provided in the through opening 80d.

[0065] According to the representation in Fig. In the illustrated embodiment, the additional connecting element 44 is designed such that the distal end sections 80a and 80b move in the forward-backward direction D4 of the bicycle frame 14 when the chain guide 42 moves between the retracted position P1 and the extended position P2. In the illustrated embodiment, the additional connecting element 44 is designed such that the distal end sections 80a and 80b move in the forward direction D41 of the bicycle frame 14 when the chain guide 42 moves from the retracted position P1 to the extended position P2. As shown in the illustration in Fig. The additional connecting element 44 has proximal end sections 78a and 78b. The proximal end sections 78a and 78b are rotatably connected to the base part 40. The proximal end sections 78a and 78b are located on opposite sides of the distal end sections 80a and 80b in the additional connecting element 44. The proximal end section 78b is spaced apart from the proximal end section 78a along the fourth axis of rotation A14. The proximal end sections 78a and 78b are each rotatably connected to the base part 40 by the second connecting shaft 62 about the fourth axis of rotation A14.

[0066] According to the representation in Fig. In section 11, the additional connecting element 44 has a recessed section 44a designed to engage with the second part 72. The second part 72 is located within the recessed section 44a. The recessed section 44a is also designed to prevent the second part 72 from being unintentionally removed from the outer section of the first part 70. The preload force of the preloading element 64 is transferred from the first end section 64b of the preloading element 64, via the outer section 76 and the second part 72, to the additional connecting element 44.

[0067] According to the representation in Fig. 12 The first part 50 of the chain guide 42 has an opening 50m, which is adjacent to the pretensioning mechanism 48. The first part 50 also has an arrangement section 50g, which is designed to accommodate the second end section 64c while resting on a guide surface 50h. The arrangement section 50g is provided with a recess in which the second end section 64c is arranged. The guide surface 50h is designed to slide with the chain 28; it is also oriented towards the second guide section 52a of the second part. The second end section 64c of the pretensioning part 64 is designed to engage in the guide surface 50h. More precisely, the second end section 64c is located inside the arrangement section 50g and does not protrude from the guide surface 50h towards the second guide section 52a. This prevents the second end section 64c from obstructing the chain 28.For the expert in the field of bicycle technology, this description makes it clear that the assembly section 50g can be omitted if necessary or desired. Since the second end section 64c engages with the guide surface 50h, the second end section 64c and / or a support element engaging with the second end section 64c do not protrude towards the bicycle frame 14 and / or the rear wheel 18. This makes the front derailleur 12 compact in the transverse direction D2 of the bicycle frame 14, thus ensuring a desired distance between the front derailleur 12 and the rear wheel 18 even if a larger rear wheel 18 (for example, a wider one) is required. This prevents the front derailleur 12 from obstructing the rear wheel 18, regardless of its size.

[0068] Unlike the first end section 64b of the pretensioning element 64, the pretensioning force of the pretensioning element 64 is transmitted directly from the second end section 64c of the pretensioning element to the first part 50 of the chain guide 42. However, it is obvious to those skilled in bicycle technology from this description that the intermediate link 66 can be attached to the second end section 64c of the pretensioning element 64. In such an embodiment, the intermediate link 66 is located at the lower end section of the pretensioning element 64 and not at the support part 68, and the second part 72 is arranged at the mounting section 50g of the first part 50. Furthermore, the intermediate link 66 can be omitted if necessary and / or desired. In such an embodiment, the first end section 64b of the pretensioning element 64 can engage directly with the additional connecting element 44 as well as with the second end section 64c of the pretensioning element 64.

[0069] It will now be on Fig. Reference is made to pages 13 to 16, which explain the procedure for assembling the preloading mechanism 48.

[0070] According to the representation in Fig. 13 The first end section 64b of the prestressing part 64 is provided in the engagement groove 76a of the outer section 76 of the first part 70. In the Fig. In the situation shown in Figure 11, the preloading element 64 is in a free state and the outer section 76 is not subjected to the preloading force of the preloading element 64. The initial circumferential position of the opening for the tool engagement 76c, relative to the additional connecting element 44, is brought into a position in which the first tool 100, for example, can be inserted into the opening for the tool engagement 76c.

[0071] According to the representation in Fig. 13. A first tool 100 is now inserted into the opening for the tool engagement 76c of the outer section 76. Using the first tool 100, the fitter rotates the first part 70 in a first direction of rotation D61, thereby increasing the preload force F1 of the preloading part 64. The fitter then holds the first part 70 in the circumferential position against the preload force F1, using the first tool 100. Fig. 14 is shown.

[0072] If according to the representation in Fig. 14. Once the opening for tool engagement 76d is brought into a position in which a second tool 102 can be inserted into the opening for tool engagement 76d, the second tool 102 is inserted into the opening for tool engagement 76d. After the second tool 102 has been inserted into the opening for tool engagement 76d, the first tool 100 is removed from the opening for tool engagement 76c. At this point, the assembler, using the second tool 102, holds the first part 70 against the preload force F1 in the Fig. 14 shown perimeter position.

[0073] According to the representation in Fig. 15. Using the second tool 102, the fitter rotates the first part 70 further in the direction of rotation D61. When the pin engagement opening 76e is brought into a position in which the second part (pin) 72 can be inserted into the pin engagement opening 76e, the second part 72 is inserted into the pin engagement opening 76e.

[0074] Then the technician turns the dial according to the diagram. Fig.16. Using the second tool 102, the first part 70 is rotated in a second direction D62, so that the second part 72 can come into contact with an inclined surface 44b of the recessed section 44a. The second direction of rotation D62 is opposite to the first direction of rotation D61. In the situation where the second part 72 is in contact with the inclined surface 44b, the second tool 102 is removed from the opening for tool engagement 76d. The preload force F2 is now transmitted from the preloading element 64 to the additional connecting element 44 via the first part 70 and the second part 72 of the intermediate member 66.

[0075] As already explained, the intermediate link 66 is provided separately from the chain guide 42 and the additional connecting element 44 such that the preload force F2 of the preloading element 64 is transmitted via the intermediate link 66 from the first end section 64b to the additional connecting element 44. Thus, compared to a derailleur without the intermediate link 66, the preloading mechanism 48 can be assembled very easily using the first tool 100 and the second tool 102.

[0076] The term "encompass" and its derivatives are to be understood in this description as open terms that specify the presence of the indicated characteristics, elements, components, groups, units, and / or steps, but do not exclude the presence of other characteristics, elements, components, groups, units, and / or steps not specified here. This idea also applies to words with similar meanings, for example, the terms "possess," "include," "exhibit," and their derivatives.

[0077] Even though the terms "component", "section", "area", "part" or "element" have been used in the singular, they can also mean a part provided in two ways or a multitude of parts.

[0078] The ordinal numbers in the terms "first," "second," or the like, used in this application, are used for identification purposes only and have no other meaning, such as indicating a specific order or the like. Furthermore, for example, the term "first element" does not imply the existence of a "second element," and the term "second element" as such does not imply the existence of a "first element." Finally, degree designations such as "essentially," "approximately," and "about" are intended to indicate only a reasonable degree of deviation from the modified term, so that the final result is not substantially altered.

Claims

[1] Front derailleur, comprising: a base part (40) designed for attachment to a bicycle frame (14); a chain guide (42) comprising a first part (50) and a second part (52), wherein the first part (50) is configured such that it comes into contact with a chain (28) and shifts it laterally so that the chain (28) moves between the chainrings (30) away from the bicycle frame (14) in an outward direction, and wherein the second part (52) is configured such that it comes into contact with the chain (28) and shifts it laterally so that the chain (28) moves between the chainrings (30) in an inward direction towards the bicycle frame (14), wherein the first part (50) comprises a first connecting section (50b) and the second part (52) comprises a second connecting section (52b) which overlaps the first connecting section (50b); a connecting element (46) designed to movably couple the chain guide (42) to the base part (40); and a shaft part (56) designed in such a way that it couples the first connecting section (50b) to the second connecting section (52b), and is designed in such a way that it rotatably couples the chain guide (42) to the connecting element (46). [2] Derailleur according to claim 1, wherein the first part (50) comprises a first guide section (50a), the second part (52) includes a second guidance section (52a), the first connecting section (50b) precedes the first guiding section (50a), and the second connecting section (52b) extends from the second guide section (52a) towards the first guide section (50a). [3] Derailleur according to claim 1 or 2, wherein the chain guide (42) is designed to be movable relative to the base part (40) between a retracted and an extended position, in which the chain guide (42) is further away from the base part (40) than in the retracted position, and the shaft part (56) is designed to move away from the base part (40) in a forward direction of the bicycle frame (14) when the chain guide (42) moves from the retracted position to the extended position. [4] Derailleur according to one of claims 1 to 3, which further comprises: an additional connecting element (44) designed to couple the chain guide (42) to the base part (40) in such a way that the base part (40), the chain guide (42), the connecting element (46) and the additional connecting element (44) define a four-bar linkage. [5] Derailleur according to claim 4, wherein the additional connecting element (44) has a cable fastening section (65) for attaching an actuating cable (32). [6] Derailleur according to claim 4 or 5, wherein the additional connecting element (44) is arranged closer to the bicycle frame (14) than the connecting element (46) when the base part (40) is attached to the bicycle frame (14). [7] Derailleur according to any one of claims 1 to 6, wherein the first connecting section (50b) and the second connecting section (52b) are provided on an upper end section of the chain guide (42). [8] Derailleur according to any one of claims 1 to 7, wherein the first connecting section (50b) has a first through-opening (50i), the second connecting section (52b) has a second through-opening (52d), and the shaft part (56) extends through the first through-opening (50i) and the second through-opening (52d). [9] Derailleur according to any one of claims 1 to 8, wherein the shaft part (56) has a first flange (56b), and the first connecting section (50b) and the second connecting section (52b) are arranged between the first flange (56b) and the connecting element (46). [10] Derailleur according to claim 9, wherein the connecting element (46) is provided with a first through-through connecting opening (46a) through which the shaft part (56) extends, the shaft part (56) has a second flange (57), and the first connecting section (50b), the second connecting section (52b) and the connecting element (46) are provided between the first flange (56b) and the second flange (57). [11] Derailleur according to claim 9, wherein the shaft part (56) has a second flange (57) and a third flange (56c), the third flange (56c) is arranged between the first flange (56b) and the second flange (57), and the first connecting section (50b) and the second connecting section (52b) are provided between the first flange (56b) and the third flange (56c). [12] Derailleur according to claim 11, wherein the connecting element (46) has a first through-through connecting opening (46a) through which the shaft part (56) extends, and the connecting element (46) is arranged between the third flange (56c) and the second flange (57). [13] Derailleur according to any one of claims 1 to 3, which further comprises: an additional connecting element (44) configured to rotatably couple the first part (50) to the base part (40), wherein the second connecting section (52b) of the second part (52) is arranged between the connecting element (46) and the first connecting section (50b) of the first part (50). [14] Derailleur according to any one of claims 1 to 13, wherein the first connecting section (50b) is configured to be in contact with the second connecting section (52b). [15] Derailleur according to any one of claims 1 to 14, wherein the first connecting section (50b) has a front end section (50j) and a rear end section (50k), the downstream end section (50k) is arranged downstream of the upstream end section (50j) in the chain drive direction, and the shaft part (56) in a state in which the base part (40) is attached to the bicycle frame (14), is arranged closer to the upstream end section (50j) than to the downstream end section (50k) in the chain drive direction.

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