Coaxial-mounted electromechanical transmission with locking device

Abstract

This invention relates to an electromechanical rear derailleur for coaxial mounting on a rear axle. The derailleur has a base element, a pivoting mechanism, and a movable element including a chain guide configuration. The chain guide configuration is connected to the movable element in a manner rotatable about a rotation axis. A locking device enables the chain guide configuration to be fixed relative to the movable element. The locking device can be engaged with the movable element in two different positions.

Description

Technical Field

[0001] The present invention relates to a rear transmission, particularly an electromechanical transmission coaxially mounted on the rear axle. Background Technology

[0002] The rear derailleur is typically secured to the right fork end of the frame using a derailleur hanger. This hanger is coaxially fixed to the frame at one end with the rear axle, and coaxially connected at the other end to the B-axis of the derailleur's base element (B-knuckle). The distance between the geometric axis A of the rear axle and the B-axis of the base element is bridged by the derailleur hanger. The base element, while mounted on the frame, can rotate relative to the derailleur hanger about the B-axis. Rotation of the derailleur is restricted to counter-clockwise forward using B-bolts. Reverse (clockwise) rotation of the derailleur is counteracted by chain tension.

[0003] EP 0 875 444 A1, EP 1 342 658 A1 and EP 1 764 297 A1 disclose mechanical transmissions for coaxial mounting on the rear axle. No separate transmission hanger is provided; the B-axis of the base element extends along the A-axis of the rear axle, i.e., coaxially.

[0004] The pinion gear set has a gear ratio of 500% or more. This type of gear ratio can be achieved by using the smallest pinion with 9, 10, or 11 teeth and the largest pinion with 50, 51, 52, or more teeth.

[0005] To operate a larger number of small gears, the size of the transmission is increased.

[0006] A tilted deflector (tilted parallelogram) can cause vertical shocks, such as those experienced during off-road riding, to move the deflector and result in unwanted shifting (ghost shifting). To make the significantly different pinions operate, the tilted parallelogram must be made even more tilted and / or the gearbox size further increased. Both of these scenarios make unwanted shifting more likely. Summary of the Invention

[0007] The purpose of this invention is to provide a transmission that is easy to install and set up.

[0008] The distance between the upper chain roller and the pinion below which the chain roller is positioned is called the B-clearance or chain clearance. In the development of chain-driven transmissions, it is generally desirable to keep the B-clearance profile as constant as possible. This profile is formed by the combined effect of various geometric parameters, such as the parallelogram geometry (pivot mechanism), the distance between the parallelogram and the rear axle A, the angle between the parallelogram and the plane connecting the axis and the central axis (B angle), the distance between the P-steering knuckle axis (P-axis) and the parallelogram, the guard geometry, the dimensions of the chain roller, and the transmission range of the pinion cassette flywheel.

[0009] Practice shows that precise initial B-gap setting has a significant impact on stability and shifting performance. In practice, setting the B-gap using common methods yields highly inaccurate results. The main problems are a lack of references and the overly complex setting process for inexperienced users. Using B-gap templates can be helpful, but incorrect application often fails to produce optimal results.

[0010] The coaxial transmission connector with a settable stop element enables a defined lock between the chain guide configuration (shroud) and the movable element (P steering knuckle), and allows for extremely precise setting of the B clearance in a simple and quick manner.

[0011] However, other problems arise in practice. In frames with rear-wheel suspension, when the spring is compressed, especially due to changes in the length of the chainstay and the B-angle, the geometry of the rear fork end changes, and this affects the B-clearance accordingly. For this reason, the B-clearance must currently be set at the sag position. At the sag position, the rear fork end is fully compressed. Therefore, a load must be applied to the rear fork end accordingly, requiring two people or other means for setting, such as purging air from the damper, removing the damper, or using auxiliary components such as a tensioner for compression.

[0012] DE 10 2018 208 053 ​​A1 disclosed a rear derailleur with an integrated display or marking on the chain guide. The marking on the derailleur functions similarly to a B-gap template, with the advantage of requiring no additional components. The marking shows the correct distance (B-gap) between the upper chain roller and the outer circumference of the largest pinion in the multi-pinion configuration. However, a drawback of this implementation is that the marking only provides one setting position for the derailleur relative to the multi-pinion configuration. That is, regardless of the bicycle type (full-suspension or hardtail), the derailleur is always set at the same position. The setting position cannot be changed based on the specific bicycle type. Consequently, currently, the setting can only be done in the sag position, i.e., in full compression, on full-suspension bicycles.

[0013] The transmission with a locking device of the present invention solves the problem in such a way that at least one second locking scheme for sag compensation exists between the guard and the P steering knuckle.

[0014] To cover different bicycle types (such as full-suspension and hardtail), the locking mechanism must be able to be deployed to different positions. The locking mechanism can be constructed as a flip chip (rotatable 180 degrees) or work in conjunction with multiple locking openings in the fairing. Advantageously, especially with two or three setting positions.

[0015] Different embodiments of the present invention are described in the claims and drawings.

[0016] Another embodiment of the invention has only one locking scheme. The locking position is selected such that a defined pinion position is used for setting in an unsprung bicycle. Another (adjacent) pinion position is used for setting including sag compensation.

[0017] Another aspect of the present invention relates to a method for installing and setting the transmission. The following is in conjunction with… Figure 18 and 19 The method is described below. The method or its steps can also be implemented with the assistance of application software (abbreviated as App).

[0018] Therefore, the bicycle category must first be determined. The chain length, for example, must be selected based on the specific category of the bicycle, and a locking mechanism must be used in the first or second position. Attached Figure Description

[0019] Figure 1 A schematic partial view of a rear wheel configuration with an electromechanical derailleur mounted on a bicycle frame.

[0020] Figure 2 This is an external view of the transmission.

[0021] Figure 3 This is an internal view of the transmission in the first locked position and the first position.

[0022] Figure 4 This is an internal view of the transmission in the second locked position and the first position.

[0023] Figure 5 This is an internal view of the transmission in the second locked position and the second position.

[0024] Figure 6 A perspective view of a movable element with a locking mechanism.

[0025] Figure 7A cross-sectional view of the locking device of the movable element in the second position—the locking (operating position).

[0026] Figure 8 A cross-sectional view of the locking device of the movable element in the second position—unlocked (non-operational position).

[0027] Figure 9 This is a cross-sectional view of the locking device in the second position after being removed from the movable element.

[0028] Figure 10 A cross-sectional view of the locking device of the movable element in its first position—the locking (operating position).

[0029] Figure 11 A cross-sectional view of the locking device of the movable element in the first position—unlocked (non-operational position).

[0030] Figure 12 This is a cross-sectional view of the locking device in its first position after being removed from the movable element.

[0031] Figure 13 This is a perspective view of the locking device—unlocked (non-operational position).

[0032] Figure 14 This is an internal view of the locking device of the present invention.

[0033] Figure 15 This is an external view of the locking device of the present invention.

[0034] Figure 16 This is a perspective cross-section of the locking device—unlocked (non-operating position).

[0035] Figure 17 This is a cross-sectional view of the locking device—in the unlocked (non-operational position).

[0036] Figure 18 A full view of the flowchart—the selection of bicycle categories.

[0037] Figure 18A for Figure 18 The enlarged first section (top left) of the flowchart in the image.

[0038] Figure 18B for Figure 18 The enlarged second section (left center) in the image.

[0039] Figure 18C for Figure 18 The enlarged third section (bottom left) in the image.

[0040] Figure 18D for Figure 18The enlarged fourth section (top right) in the image.

[0041] Figure 18E for Figure 18 The enlarged fifth section (middle right) in the image.

[0042] Figure 19 This is a full view of the flowchart—the installation and setup procedure for the transmission.

[0043] Figure 19A for Figure 19 The enlarged first section (top) of the flowchart in the image.

[0044] Figure 19B for Figure 19 The enlarged second section (below) of the flowchart in the image.

[0045] Figure 20A For a transmission having a locking device according to the second embodiment,

[0046] Figure 20B for Figure 20A The transmission part in the middle,

[0047] Figure 21 For a transmission having a locking device according to the third embodiment,

[0048] Figure 22 For a transmission having a locking device according to the fourth embodiment,

[0049] Figure 23 For a transmission having a locking device according to the fifth embodiment,

[0050] Figure 24 For a transmission having a locking device according to the sixth embodiment,

[0051] Figure 25A For the gearbox of the locking device of the seventh embodiment—first set position, operating position,

[0052] Figure 25B for Figure 25A A cross-sectional view of the transmission in the image.

[0053] Figure 26A For the gearbox having the locking device of the seventh embodiment, the position is exchanged between the first and second positions.

[0054] Figure 26B for Figure 26A A cross-sectional view of the transmission in the image.

[0055] Figure 27A For the gearbox of the locking device of the seventh embodiment—second set position, operating position,

[0056] Figure 27B for Figure 27A A cross-sectional view of the transmission in the image.

[0057] Figure 28 For a transmission having a locking device according to the eighth embodiment,

[0058] Figure 29A For a transmission having a locking device according to the ninth embodiment,

[0059] Figure 29B for Figure 29A A cross-sectional view of the transmission in the image.

[0060] Figure 30 For a transmission having a locking device according to the tenth embodiment,

[0061] Figure 31 The setting curves for first gear and seventh gear. Detailed Implementation

[0062] Detailed description of preferred embodiments

[0063] The directional designations “front / rear,” “outside / inside,” “up / down,” and “left / right” used below refer to the alignment and application of the bicycle in the direction of travel. The bicycle frame 1 has left and right rear fork ends 2, between which a rear wheel (not shown) is mounted. The rear wheel rotates about the rear axle A together with a pinion gear set 4. The pinion gear set 4 is schematically shown and rotates about the rear axle A. This pinion gear set 4 may, for example, include 12 pinions, with the smallest pinion having ten teeth and the largest pinion having 52 teeth.

[0064] The electromechanical gearbox 10 is mounted on the right fork end 2. When shifting from a larger pinion to a smaller pinion, the gearbox 10 moves the chain 5 axially outward. When shifting from a smaller pinion to a larger pinion, the gearbox 10 moves the chain 5 axially inward. The axial direction refers to the axis of rotation A of the rear axle A or the multi-pinion configuration 4. The largest pinion is arranged more inward in the axial direction compared to the smaller pinions. Its teeth are arranged radially outward from the pinions. The chain 5 passes through the chain guide configuration in an S-shape and meshes with the teeth of the upper and lower chain guide rollers and the teeth of the pinion set 4 (not shown).

[0065] Figure 1 The bicycle drivetrain shown includes a front single sprocket (not shown), a rear pinion 4, a chain 5, and a rear derailleur 10. Shift signals are transmitted from a shift mechanism (not shown) mounted on the handlebars to the electromechanical derailleur 10. Shift signals can be transmitted from the shift mechanism to the derailleur 10 in a cable-free or wireless manner. Alternatively, shift signals can be transmitted via cable. The locking device of this invention can also be used with both mechanical and electromechanical derailleurs.

[0066] Figure 1 An exterior perspective view of one embodiment of a rear derailleur 10 mounted on the right fork end 2 of the frame 1 is shown.

[0067] Figure 2 Only an external view of the transmission 10 is shown. When the transmission 10 is coaxially mounted along the rear axle A or the B axis of the base element 20 by means of bolts 60, the transmission hanger is not required.

[0068] The chain guide configuration 90 is connected to the movable element 40 in a manner rotatable about a pivot 41 (P-axis) and pre-tensioned clockwise (rearward) to tension the chain. The chain guide configuration 90 includes an upper chain guide roller 91 and a lower chain guide roller 92, which are rotatably supported between two covers 93a and 93b, respectively. The upper chain guide roller 91 is rotatably arranged with an upper distance spaced from the P-axis 41. The lower chain guide roller 92 is rotatably arranged with a lower distance spaced from the P-axis 41, wherein the distance between the upper chain guide roller 91 and the P-axis 41 is less than the distance between the lower chain guide roller 92 and the P-axis. The movable element 40 includes a locking device 100 (inverted plate) that fixes the pre-tensioned chain guide configuration 90 relative to the movable element 40. This allows for the installation and setting of the gearbox 10, while the chain guide configuration 90 will not lock backward due to preload.

[0069] The transmission 10 includes a two-piece base element 20, a movable element 40, a chain guide configuration 90, and a pivoting mechanism 30 connecting the base element 20 and the movable element 40. An electromechanical drive for driving the pivoting mechanism 30 is housed in a gearbox housing 50 and held by the base element 20. An energy source 70 is mounted rearward on the base element 20.

[0070] Figures 3 to 5 An internal view of the electromechanical transmission 10 in different locked positions is shown. For clarity, the inner cover plate 93b is not shown.

[0071] The base element 20 has two arms 22a and 22b on its first connecting end 21, which are bolted through along the B-axis or Z-axis to be mounted on the rear wheel axle A. When mounted on the frame, the B-axis of the bolt 60 and the Z-axis of the centering opening of the base element 20 extend coaxially with the frame opening, and thus coaxially with the rear wheel axle A. Figures 1 to 3 The diagram shows the alignment of the three axes A, B, and Z after installation. Coaxial mounting of the electromechanical transmission 10 on the rear axle A refers to the alignment of the transmission 10's B axis with the rear axle A. In transmissions that are not coaxially mounted, the transmission's B axis is spaced apart from the rear axle A.

[0072] The base element 20 has two bearings on its second connecting end 29 for rotatably supporting a pivot arm of the pivoting mechanism 30. The longitudinal axis of the bearing is generally parallel to the pinion plane or intersects the rear axle A at a right angle. Regardless of whether the base element 20 is constructed as a single unit or a multi-component unit, the position of the centering opening in the arms 22a, 22b on the first connecting end 21 remains constant relative to the position of the bearing on the second connecting end 29. The centering opening of the first connecting end 21 can be mounted coaxially with the rear axle A, and the second connecting end 29 is used for coupling with the pivoting mechanism 30. That is, the Z-axis of the centering opening remains constant relative to the longitudinal axis of the bearing of the pivot. In other words, these axes are constructed rigidly relative to each other. Unlike the prior art, there is no hinged connection between the transmission hanger and the base element (B steering knuckle), which is adapted to be mounted on the rear axle A, the base element including the bearing for the pivoting mechanism.

[0073] Figure 3 The transmission is shown in the first locked position (cover lock), in which the chain guide configuration 90 is fixed relative to the movable element 40 to remove the rear wheel. For this purpose, the locking element 120 of the locking device 100 is engaged between the upper chain guide roller 91 and the pivot 41 on the edge of the upper cover arm 94 of the outer cover plate 93a.

[0074] Depending on the specific type of bicycle, the locking device 100 can be engaged in the movable element 40 in a first position or in a second position rotated 180 degrees. Figure 3 The locking element 100 in the first position is shown (corresponding to bicycle category 1).

[0075] Figure 4 The derailleur is shown in the second locked position (chain clearance adjustment), in which the chain guide configuration 90 is fixed relative to the movable element 40 to set the rear derailleur 10 relative to the multi-stage pinion configuration 4. For this purpose, the locking element 120 of the locking device 100 is engaged between the lower chain guide roller 92 and the pivot 41 (P-axis) on the edge of the lower cover arm 95 of the outer cover plate 93a. Depending on the specific bicycle type, the locking device 100 can insert the movable element 40 in a first position or in a second position rotated 180 degrees relative to the first position. Figure 4 The locking element 100 in the first position is shown (corresponding to bicycle category 1).

[0076] Figure 5 Roughly equivalent to Figure 4 The view in the diagram also shows the derailleur in the second locked position. However, in this embodiment, the locking device 100 inserts the movable element 40 in the second position (corresponding to bicycle category 2). That is, with Figure 4In contrast, the locking device 100 rotates 180 degrees. Due to the eccentric structure of the locking device 100, the contact surface 126 of the locking element 120 is displaced by the 180-degree rotation to cooperate with the lower cover arm 95 of the outer cover plate 93a. Subsequently, the cover contacts the locking element 120 accordingly, causing the chain guide configuration 90 to rotate further rearward about the P-axis 41 based on the damper preload.

[0077] In the second position of the locking device 100, the chain guide configuration 90 is locked relative to the movable element 40 at an angle different from that in the first position of the locking device 100. This can be seen from... Figure 4 and Figure 5 This can be seen from the comparison.

[0078] Figure 6 An external perspective view of a movable element 40 with a locking device 100 installed is shown. For this purpose, the movable element 40 has an opening in which the locking device 100, consisting of a push pin 120 and a bolt housing 130, is received and secured. The locking device 100 is shown in the locked position, with the push pin 120 pressed into the bolt housing 130 until a stop is reached. The movable element 40 also has two bearings 42a, 42b in which the pivot of the pivoting mechanism 30 (see one of the figures above) can be supported.

[0079] Figure 7 A cross-sectional view of the movable element 40 is shown, specifically a cross-sectional view of the socket 43 and the locking device 100 disposed therein. The locking device 100 is engaged in the socket 43 in a second position. In this second position, the resilient hook 134 of the bolt housing 130 abuts against the second undercut 44b of the socket 43 of the movable element 40. The locking device 100 is in the locked position (operating position). That is, the push pin 120 moves along the longitudinal axis 121 within the bolt housing 130. For this purpose, the spring force of the spring 150 must be overcome, for example, by manual pressing.

[0080] The pre-tensioned chain guide configuration (not shown) presses against the contact surface 126 on the pusher 120 and holds the pusher in the active position until the chain guide configuration is manually rotated forward against the preload of the damper. Subsequently, the pusher 130 is released and springs back to its initial or inactive position based on the preload of the spring 150.

[0081] Figure 8 Showing the second position again Figure 7The locking device 100, with hook 134 engaged with the second undercut 44b, is not in the locked position in this figure, but in the inactive position. The pusher 120 is positioned in its initial position based on the elastic force of the spring 150. The axial movement of the pusher 120 is restricted by the locking ring 140. The locking ring 140 works both with the undercut 125 on the pusher 120 and with the stop 135 on the bolt housing 130. The locking ring prevents the pusher 130 from sliding axially outward from the housing 130.

[0082] Figure 9 Show Figure 7 and Figure 8 The locking device 100 is removed from the movable element 40 in the second position. This requires a pulling force to overcome the elastic latch between the hook 134 and the second undercut 44b. Therefore, both the hook 134 and the undercut 44b are constructed at an angle. The locking device 100 can be engaged with the protrusion 132 of the bolt housing 130 and pulled out from the socket 43 along the longitudinal axis 121.

[0083] The protrusion 132 also serves as an axial external stop for the pusher 130. The larger diameter pressure end 122 of the pusher 120 stops at the position of the protrusion 132 on the housing 130.

[0084] Figure 10 A cross-sectional view of the movable element 40 is shown, specifically a cross-sectional view of the socket 43 and the locking device 100 disposed therein. The locking device 100 is engaged in the socket 43 in a first position. In this first position, the resilient hook 134 of the bolt housing 130 abuts against the second undercut 44a of the socket 43 of the movable element 40. Therefore, the locking device 100 in the first position is relative to... Figures 7 to 9 The second position is shown, rotated 180 degrees. This 180-degree rotation is performed about the longitudinal axis 101 of the locking device 100. The longitudinal axis of the locking device 100 is parallel to the longitudinal axis 121 of the pusher 120 but extends offset from it. That is, the pusher 120 is eccentrically arranged in the housing 130. The locking device 100 is shown in the locked position (operating position).

[0085] contrast Figure 7 (Second position) in Figure 10 In the first position, the locking device 100, rotated 180 degrees, shows that the longitudinal axes 121 are spaced apart by a distance X. This different positioning of the longitudinal axes 121 of the pusher 120 causes displacement of the contact surface 126. Accordingly, the chain guide is locked in the other corner position.

[0086] Figure 11 and Figure 12 Roughly equivalent to Figure 8and Figure 9 The difference in the view is that the locking device is in the first position, that is, it is inserted into the movable element 40 by rotating 180 degrees about the longitudinal axis of the locking device 100. Accordingly, the hook 134 engages with the first undercut 44a.

[0087] Figure 11 The locking device 100 is shown in the non-locking position (non-operating position).

[0088] Figure 12 The locking device 100 is also shown removed from the socket 43. For removal, the inclined resilient hook 134 has overcome the inclined first undercut 44a and is pulled out of the socket 43 along the longitudinal axis 101. That is, the longitudinal axis 101 of the locking device 100 corresponds to the longitudinal axis of the socket 43 in the movable element 40. The longitudinal axis 101 extends parallel to and offset from the longitudinal axis 121 of the push pin 120.

[0089] Figure 13 This is a perspective view of the locking device 100 in the non-locking position (non-operating position). The locking element 120 extends axially outward from the bolt housing 130. The pressure end 122 is spaced from the stop 132. The bolt housing 130 has an elliptical outer diameter of varying sizes. The resilient hook 134 is integrally formed with the bolt housing 130. The larger diameter 133 serves as a stop on the movable element 40, particularly on the axially outer end side of the socket 43 (see...). Figure 11 The larger diameter 132 serves as a stop for the pressure end 122 and also as an operating surface for withdrawing from the movable element and operating the locking device 100.

[0090] Figure 14 An internal view of the locking device 100 is shown. The eccentric orientation of the locking element 120 is clearly visible here. Two transverse axes of the locking element 120 and the locking device 100 are shown. These two transverse axes intersect at the center of the component or along the longitudinal axis of the component. The center or longitudinal axis 121 of the locking element 120 is offset from the center or longitudinal axis 101 of the locking device 100. The locking ring 140 is constructed to be non-closed, so that it can be clamped onto the push pin 120.

[0091] Figure 15 A corresponding external view of a locking device 100 with a pusher 120 eccentrically supported in a bolt housing 130 is shown. The longitudinal axes 121 and 101 are spaced apart from each other.

[0092] Figure 16 and Figure 17The diagram shows a perspective view and a side sectional view of the locking device 100 in its non-operating position. A spring 150 pre-tensions the pusher 120 relative to the bolt housing 130. A locking ring 140 limits the pre-tension force and is fixed between the protrusion 125 and the stop 135. The pusher 120 has a pressure surface at its end 122. A larger diameter locking end 123 engages with the cover plate in the locked position. To prevent the pusher 120 from returning to its initial position, the diameter of the locking end 123 is increased relative to the contact surface 126. A ramp is provided between the locking end and the contact surface. The cover plate has a frictional fit with the contact surface 126 and the ramp with the locking end 123. The bolt housing 130 has a hook 134 and multiple larger diameter sections 132 and 133.

[0093] Another aspect of the present invention is the installation and setup procedure for the rear transmission 10 to be coaxially mounted.

[0094] Figure 18 and 19 The two flowcharts illustrate the steps of the program. Some steps can be applied to both mechanical and electromechanical transmissions.

[0095] During installation and setup, a locking device 100 is also used to fix the clockwise pre-tensioned chain guide configuration 90 relative to the movable element 40 at a predetermined rotational position. The predetermined rotational position or angular position fixes the upper chain guide roller 91 at a desired distance (chain clearance or B clearance) relative to a reference pinion, for example, on the 7th pinion of the pinion set. The derailleur 10 is locked by means of the locking device 100 for setting. After setting, the lock is released, allowing the chain guide configuration 90 to rotate relative to the movable element 40.

[0096] The following describes the installation / setting procedures for transmission 10, which are generally applicable to both mechanical and electric transmissions. See [link / reference] Figures 1 to 5 .

[0097] i) The derailleur 10 is pre-mounted onto the frame 1 using the base element 20 and the adapter 60. For this purpose, the base element 20 loops around the right fork end 2 of the frame 1, and the adapter 60 is inserted and tightened into the frame opening and centering opening of the base element 20. The adapter 60 is tightened until it is held together with the base element 20 on the frame 1 in a manner that allows it to still rotate.

[0098] After the first installation step, the adapter 60 and the base element 20 are pre-positioned relative to the frame 1 in the axial and radial directions, but are not yet tightened. The adapter 60 and the base element 20 can rotate relative to the frame 1 about axis A.

[0099] ii) The rear wheel with the full hub configuration is inserted and the swivel shaft is screwed in, but not fully tightened. In this untightened state, the transmission 10 can still rotate around the rear axle A.

[0100] iii) Tighten adapter 60. This involves rotating the bolt and nut clockwise relative to the base element 20 until the nut's stop strikes the mating stop of the base element 20. Based on these stops, further rotation drives the base element 20 and the entire transmission 10 until the chain 5 is tensioned. The base element 20 and nut are then secured in the tensioned position, such that the bolt is screwed into the nut's internal thread until adapter 60 is tightened onto the frame 1.

[0101] Optionally, a locking device 100 can be used. The chain guide configuration 90, which is rotatable about the P-axis 41, is fixed at a specific angle by locking 100, thereby presetting the desired distance between the upper chain roller 91 and the reference pinion. To do this, the derailleur 10 is switched to the reference gear or reference pinion, the chain guide device 90 is locked, and the base element 20 and the entire derailleur 10 are twisted rearward about the rear axle A until the desired chain tension is achieved.

[0102] iv) Secure the connector shaft in the set position and release lock 100. By tightening the connector shaft, clamp the inner arm 21b of the base element 20 between the hub cap and the adapter 60. Thus, the arm 22b, along with the entire base element 20 and the transmission 10, is orthogonally oriented to the hub cap or rear axle A. Possible frame tolerances are irrelevant to this orientation.

[0103] The above simple setup can be achieved simply by coaxially mounting the transmission 10 to the rotating shaft A, and by maintaining a constant distance between the reference pinion and the locked upper chain roller 91. In the non-coaxially mounted transmission RD, the distance between the upper chain roller and the reference pinion may change when rotating about the B axis of the base element, which is spaced from the rear wheel axle A.

[0104] Steps i) to iv) above are largely reflected in Figure 19 During the process.

[0105] Figure 18 The process of determining the bicycle category and chain length is illustrated in the flowchart. Depending on the specific bicycle category (group 1, 2, or 3), the locking device 100 is inserted into the movable element 40 in the first or second position.

[0106] Figure 18 Showing a full view of the flowchart. For clarity, [the following will be shown]. Figure 18 The flowchart is divided into five sections and is displayed on five separate pages. Figures 18A to 18EIt is shown again after being magnified. Figure 18 In the flowchart, the five sections are shown with dashed lines. Figures 18A to 18E and Figure 18 The content of the flowchart shown is the same.

[0107] The left branch of the chart (all data available) represents the scenario where all required data is available or can be retrieved via the app. Here, users / operators can scan QR codes or enter bicycle IDs to assist in retrieving the necessary data. The required chain length can be determined based on the bicycle model and year. Furthermore, the bicycle can be assigned a category 1, 2, or 3.

[0108] The right branch (on bike measurement) is suitable for situations where not all the required data is available or must first be manually measured on the bicycle.

[0109] In other words, the following information can be entered automatically or manually:

[0110] - Full suspension or hardtail

[0111] - In hardtail bikes, only the chainstay length in spring-extended state (CSL0) (without rear suspension) and the chainring / chainring CR dimensions are needed to determine the chain length and classify the bike into category 1 or 2. The locking mechanism 100 is then oriented on the derailleur 10 according to the output bike category.

[0112] -Subsequently, implementation Figure 19 The setup process.

[0113] - In a full-suspension bike, three different spring states are required: CSL0, CSLmax, and CSLsag, with varying chainstay lengths.

[0114] - Select the rear spring type and select the gear size.

[0115] When the setup process is complete, the user will know what chain length is required and where to insert the locking element 100.

[0116] For situations where three or more categories / groups need to be set in the spring-extended state, the locking element can be shifted to three or more setting positions. See the embodiment of the locking element with three or more setting positions for this. If the locking element has only one or two setting positions, it is also conceivable to change the reference pinion, for example, switching to the sixth gear.

[0117] Subsequently implemented as follows Figure 19The installation and setup procedure for the transmission is shown.

[0118] Figure 19 The flowchart is shown again in full view, divided into two sections for clarity, and displayed on two separate pages. Figures 19A to 19B It is shown again after being magnified. Figure 19 In the flowchart, the two sections are shown with dashed lines. Figure 19A and 19B and Figure 19 The content of the flowchart shown is the same.

[0119] In this case, the first step for determining the chain length has been completed (see...). Figure 18 Next, install the drivetrain onto the bicycle and engage the chain in 12th gear. Then, loosen the connector and bolts, and engage the locking device 100 in the active position (corresponding to steps i) to iii) detailed above. Figure 19 The locking element 100 is referred to as an "adjust-lock".

[0120] Then initiate the setup sequence. This setup sequence can be performed directly on the electric gearbox 10 (right branch) or via an app (left branch).

[0121] Both setting sequences are implemented with a 7th gear (reference pinion). The reference pinion is activated via the app or by pressing the setting button on the gearbox 10. The reference pinion can be visually highlighted to simplify operation. For example, the 7th pinion or the locking sleeve below it can be colored.

[0122] With the chain on the reference pinion, pull the chain guide or guard back clockwise (in the external view) until the chain is taut and the bolts and ferrules are tightened (see steps iii) and iv above).

[0123] Subsequently, the correct distance (B clearance) is confirmed and the setting is complete. Furthermore, the transmission 10 may have LEDs that emit light signals to indicate correct setting and / or successful execution of the operating steps.

[0124] Figure 20AAn external perspective view of the transmission 12 is shown, which has a locking device 200 in the form of a setting ring, as described in the second embodiment. The difference between the transmission 12 and the previously described embodiment lies primarily in the locking device 200. Accordingly, the locking device 200 will be described first. Reference numerals for components with the same structure will be used. The setting ring 200 is annular and arranged coaxially with the P-axis 41 on the movable element 240. The setting ring 200 is supported on the movable element 240 in a manner that allows it to rotate about the P-axis 41. A locking element 220 is arranged on the setting ring 200, which can be shifted into an active and inactive position along its longitudinal axis 212. The locking device 200 can be continuously positioned by rotating about the P-axis 41. The setting position between the locking element 220 and the guard 90 changes depending on the specific angular position of the locking device 200. Markings or grids can be provided on the P-knuckle 240 to indicate different positions and simplify the setting for different bicycle types.

[0125] Figure 20B Show Figure 20A An internal view of a portion of the gearbox 12. The guard is not shown here for clarity. A set ring 200 almost completely surrounds the movable element 240. A socket for the locking element 220 is integrated into the set ring 200. In the illustrated embodiment, the set ring 200 is constructed as a snap ring and is open in one location. The two ends 202 of the set ring 200 can be connected to screws (not shown). The set ring 200 and the locking element 220 are twisted together about the P-axis 41 and fed into the correct set position, depending on the specific bicycle type. The ends 202 of the snap ring set ring 200 are tightened in the selected position, securing the locking device 200 relative to the movable element 240.

[0126] According to the first embodiment, the pre-tensioned locking device 200 is locked. The locking device 200 works in conjunction with the stop on the cover 90 to lock the cover in a predetermined position. The locking element 220 shown is concentrically arranged in the housing. Since it can be steplessly set and multiple positions can be used, the locking element 220 does not need to be rotated 180 degrees.

[0127] Figure 21An internal view of a transmission 13 having a locking device 300 according to a third embodiment is shown. For clarity, the inner cover plate of the guard is not shown. The locking device 300 of the illustrated embodiment is formed by a fitting 310 rotatably supported on an outer cover plate 93a, which works in conjunction with a locking element 320. The fitting 310 is supported on the guard 90 in a manner rotatable about a rotation axis 311 and has three recesses 310a, b, and c. The recesses 310a, b, and c enable three different setting positions of the guard relative to the movable element 40. The fitting 310 can be moved into the correct position by rotation about axis 311, either with or without tools. In the shown position, the locking element 320 engages with the recess 310c. The fitting may also be provided with two, four, or more recesses for corresponding numbers of setting positions.

[0128] Figure 22 An internal view of a transmission 14 with a locking device 400 according to a fourth embodiment is shown, again omitting the inner cover plate. The locking device 400 consists of a strip-shaped clip 400 to be fastened to an outer cover plate 93a and a locking element 420. The clip 400 is detachably connected to the cover plate 93a; specifically, the clip 400 loops around the cover plate 93a. The clip 400 has two ends extending from the edge of the cover plate 93a at different distances, each end having a groove 410a and 410b. The clip 400 can be rotated 180 degrees and inserted into the cover plate 93a in two different positions. Depending on the specific installation configuration, the locking element 420 works in conjunction with either the first groove 420a or the second groove 420b. This allows the transmission 14 to be locked in two different positions.

[0129] Figure 23 A transmission 15 with a locking device 500 according to a fifth embodiment is shown. The inner cover is concealed. The locking device 500 of the illustrated embodiment is formed by a pair of fittings in the form of a lever 510 rotatably supported on an outer cover 93a, which works in conjunction with a locking element 520. The lever 510 is supported on a cover 90 in a manner rotatable about a rotation axis 511 and has three recesses 510a, b, and c. The recesses 510a, b, and c arranged side by side on the lever 510 allow the cover to be positioned in three different locations relative to the movable element 40. The pair of fittings 510 can be inserted and secured in the correct position by rotation about the axis 511, either with or without tools. In the illustrated position, the locking element 520 engages with the recess 510c. The pair of fittings can also be provided with two, four, or more recesses for the corresponding number of positioning positions.

[0130] Figure 24A transmission 16 with a locking device 600 according to a sixth embodiment is shown. The inner cover is not shown. The locking device 600 of the shown embodiment is formed by a pair of components, a slider 610 supported in a manner movable along the cover 93a, which works in conjunction with the locking element 620. The slider 610 is supported in a manner movable along the cover 93a and / or has three recesses 610a, b, and c. The recesses 610a, b, and c arranged side-by-side on the slider 610 enable three different setting positions of the cover relative to the movable element 40. The slider 610, which is additionally movable along the cover, can also achieve other setting positions. In the shown position, the locking element 620 engages with the uppermost recess 610c. The slider can also be equipped with one, two, four, or more recesses for the corresponding number of setting positions. Stepless setting can also be achieved using only one recess and a slider 610 movable along the cover.

[0131] Figure 25A , 25B Views 26A, 26B, 27A, and 27B show views of the transmission 17 having the locking device 700 of the seventh embodiment in different positions. Similar to the locking device 100 of the first embodiment, the locking device 700 can be arranged in a first set position and a second set position rotated 180 degrees relative to the first set position. Advantageously, in the seventh embodiment, the locking element 720 cannot be lost because it does not disengage from the transmission 17 when shifting from the first position to the second position.

[0132] Figure 25A An interior perspective view of a portion of the transmission 17 is shown. For clarity, the upper part of the transmission and the guard portion are not shown. Figure 25B Show Figure 25A The cross-section of the component shown. This cross-sectional view shows the combined effect of the stop surface 726 and the orientation surface 733.

[0133] exist Figure 25A In the middle, the locking device 700 is in the active position and in the first set position. The locking device 700 includes a locking element 720, which is housed in the movable element 740 and works in conjunction with the mating stop 710 on the cover in the active position.

[0134] The locking element is constructed as an eccentric pin 720. The eccentric pin 720 has at least two stop surfaces 726a and 726b, which contact the cover plate 710 in their active position. The stop surfaces 726a and b on the pin 720 are arranged at different distances from the central axis or longitudinal axis 721 of the eccentric pin 720. In this embodiment, the distance between the first stop surface 726a and the eccentric pin axis 721 is approximately 0 mm, and the distance between the second stop surface 726b and the eccentric pin axis is approximately 2 mm.

[0135] The stop surfaces 726a and b on the eccentric pin 720 are parallel to the mating stop surface 710 on the transmission guard. The mating stop surface 710 is provided on the lower cover arm of the outer cover plate 793a. The parallel arrangement of surfaces 726 and 710 creates a planar stop between the transmission guard and the eccentric pin 720 regardless of the setting position of the eccentric pin 720.

[0136] To ensure the correct rotational orientation of the eccentric pin 720 within the movable element 740, oriented surfaces 733a and 733b that work together are provided on the eccentric pin 720 and in the bolt housing 730 that accommodates the eccentric pin 720. If the oriented surfaces 733a and 733b are as follows... Figure 25B When the pins are engaged as shown, the eccentric pin 720 is rotatably fixed relative to the movable element 740. The pin 720, which is pre-tensioned outward along the axial direction, has a protrusion at its inner axial end that engages with the outer cover plate 793a from behind, thereby locking it in the active position.

[0137] Figure 26A and 26B Show Figure 25A , 25B The corresponding view of the transmission 17 in the middle at the interchanged position between the first and second positions. In the position shown, the locking element 720 has been rotated 180 degrees and entered the second position, but has not yet been re-secured relative to the bolt housing 730 by means of the orientation surface 733.

[0138] To exchange the set positions, the transmission is positioned so that the eccentric pin 720 can move axially without obstruction, i.e., it does not interact with the cover. Therefore, in the illustrated embodiment, the eccentric pin 720 is positioned within the window of the outer cover plate 793a. The eccentric pin 720 is pressed axially inward along the longitudinal axis 721 and against the preload force to push it out of the bolt housing 730 until the orientation surfaces 733a, b on the eccentric pin 720 and in the bolt housing 730 are no longer covered or disengaged. The eccentric pin 720 can then be rotated 180 degrees to enter the second set position. In this second set position, the second stop surface 726b faces the mating stop 710. The pin 720 can be twisted with or without tools. For this purpose, the pressure end of the pin 720 can be equipped with a tool interface 722. If the axial pressure on the eccentric pin 720 is stopped, the pin will move back based on the preload, causing the orientation surfaces 733a and 733b to overlap or engage.

[0139] Figure 27A and 27BThe second set position of the eccentric pin 720 is shown. The pin 720 is rotated 180 degrees relative to the first position, such that the second stop surface 726b works in conjunction with the mating stop 710 on the outer cover plate 793a. A protrusion on the axial inner end of the eccentric pin 720 engages with the outer cover plate 793a from behind. Figure 27B As can be seen from the cross-sectional view, the orientation surfaces 733a and 773b overlap, thus the pin 720 is rotatably fixed in the housing 730. Since the stop surfaces 726a and 726b are at different distances from the longitudinal axis 721 of the pin 720, the cover is locked in another position relative to the movable element, depending on the specific location.

[0140] Figure 28 A transmission 18 is shown with a locking device 800 according to another embodiment. The locking device 800 is generally equivalent to the aforementioned embodiment 700. The locking element 820 has three (instead of two) stop surfaces 826a, b, and c. The three-sided structure of the eccentric pin 820 enables three set positions (eccentric triangles). The three stop surfaces 826a, b, and c are arranged at three different distances from the longitudinal axis of the eccentric pin 820. Depending on which stop surface 826a, b, or c interacts with the mating stop 810 on the cover plate 893a, the cover takes another set position relative to the movable element 840. The pin 820 is provided with protrusions at its axial inner end, which engage the cover plate from behind, thereby suppressing the axial preload of the pin 820. In the view shown, the first stop surface 826a engages with the mating stop 810 with its corresponding protrusion. The structure of the housing 830 follows the three-sided structure of the pin 820. Correspondingly, three orientation surfaces are also provided on the inner sides of the pin 820 and the housing 830. The exchange from one position to the next position follows the principle of the aforementioned embodiment.

[0141] Alternatively, the orientation surfaces on the eccentric pin and / or in the housing in the two embodiments described above can be designed to be flexible, for example, by a correspondingly thinner wall thickness, thereby overcoming the form fit with a corresponding torque. In this case, the setting positions can also be interchanged without pressing the pin out of the housing. To apply a larger torque, the eccentric pin is preferably equipped with a corresponding tooling interface, such as an internal hex or Torx socket.

[0142] Figure 29A and 29BA side view and cross-section of a portion of a transmission 19 having a locking device 900 according to a ninth embodiment are shown. The locking device consists of a locking element 920 and locking openings 926a and 926b on a cover plate 993a. Unlike the previous embodiments, the locking openings 926a and 926b are arranged on an upper cover arm between an upper guide roller (not shown) and a P-axis 941. The locking element is implemented as a spring-loaded pin 920. The pin 920 is pre-tensioned axially outward along its longitudinal axis 921. Preferably, the pin 920 is positioned as far away from the P-axis 941 as possible, otherwise the centering surfaces 910 of the locking openings 926 may overlap. To achieve a compact form of the transmission 19, the pin 920 is placed inside the pivoting mechanism 30. The locking openings 926a and 926b on the transmission cover have tapered centering surfaces 910, which relate to the tapered surface 910 on the centering head of the pin 920—see [reference] Figure 29B A cross-sectional view. The centering head of pin 920 is held in the selected locking position by spring tension. Three or more locking openings can also be used to achieve the corresponding number of setting positions.

[0143] Figure 30 A partial internal view of a coaxial derailleur 20 with an alternative locking device 1000 is shown. Here, the outer cover 1093a is provided with markings 1020a, b, and c. Each bicycle category corresponds to one marking 1020a, b, or c. To set the derailleur 20, a bicycle chain (not shown) engages with the indicated reference pinion R and passes through the derailleur in an S-shape. The entire derailleur 20 is rotated rearward (counterclockwise in the internal view) about the rear axle A in the opposite direction of chain tension until the selected marking 1020b is covered by the outer periphery of the reference pinion R. One of the intermediate pinions, particularly the 6th or 7th pinion, is suitable as the reference pinion R. The number of markings predetermines the number of setting positions.

[0144] In a non-coaxial transmission, for setting purposes, the transmission does not rotate around the rear axle A, but rather around axis B, which is spaced from the rear axle A. In a coaxial transmission, the rear axle coincides with axis B.

[0145] As an alternative to the markings on the cover plate itself, three or more markings may be applied to a separate set template.

[0146] Figure 31 The graph illustrates the advantages of setting the transmission in one of the intermediate pinions, such as the seventh pinion or seventh gear (gear 7), compared to the conventional method of setting it in the largest or first pinion (gear 1). Chain clearance or B clearance was measured separately for first gear and seventh gear, with a deviation D of ±3mm. When setting in first gear, the dissimilarity... Significantly greater than seven gears. Dissimilarity refers to the distance between the upper and lower diagrams for gear 1 or 7. Smaller dissimilarity also indicates a constant chain clearance, thus indicating improved accuracy. Modern multi-pinion configurations have a larger number of pinions (12 or more). Furthermore, the largest pinions have a larger number of teeth (50, 52, or more). As multi-pinion configurations gradually increase in size, a constant chain clearance across all gears is crucial for shifting accuracy.

[0147] The following examples are used to illustrate the present invention:

[0148] 1. A rear derailleur (10) for a bicycle shifting device, comprising:

[0149] -Basic component (20), which can be mounted on a bicycle frame;

[0150] - A movable element (40), which is coupled to the base element (20) and can be displaced relative to the base element.

[0151] - A chain-guided configuration (90) coupled to the movable element (40) and capable of pivoting relative to this movable element about a pivot (41),

[0152] - A pretensioning device, wherein the chain guide configuration (90) can be pretensioned to a starting position relative to the movable element (40) about the pivot (41) by means of the pretensioning device, wherein the chain guide configuration (90) can be rotated from the starting position about the pivot (41) in opposite directions to the tension of the pretensioning device into different working positions, and

[0153] - At least one locking device (100) adapted to lock the chain guide configuration (90) relative to the movable element (40) in at least one locking position different from the starting position, wherein the locking device (100) has a locking element (120) displaceable between a non-operating position and at least one operating position, in which the locking device releases the chain guide configuration (90) relative to the movable element (40), and in which the locking device holds the chain guide configuration (90) in the at least one locking position.

[0154] 2. The rear derailleur (10) according to the previous example, wherein the chain guide configuration (90) has at least one contact element, in particular in the form of an outer cover 93a or an opening in the outer cover 93a, the contact element cooperating with or being able to engage with the locking element (120) to lock the chain guide configuration (90) in the at least one locked position.

[0155] 3. The rear transmission (10) according to any of the above examples, wherein the locking device (100) is arranged on the movable element (40), and particularly supported in the receiving opening (43) of the movable element (40).

[0156] 4. The rear transmission (10) according to any of the examples above, wherein the locking element (120) is displaceable toward the pivot (41) or is displaced parallel to the pivot.

[0157] 5. The rear transmission (10) according to any of the above examples, wherein the locking element (120) is displaceable along the longitudinal axis (121) between the active position and the inactive position.

[0158] 6. The rear transmission (10) according to any of the above examples, wherein the locking device (100) further comprises a bolt housing (130) for supporting the locking element (120).

[0159] 7. The rear transmission (10) according to any of the above examples, wherein the locking element (120) is preferably pre-tensioned to the non-operating position by means of a spring device (150).

[0160] 8. The rear transmission (10) according to any of the above examples, wherein the spring device (150) is arranged between the bolt housing (130) and the locking element (120), and pretensions the locking element (120) relative to the bolt housing (130) to the non-operating position.

[0161] 9. The rear transmission (10) according to any one of the above examples, wherein the locking device (100) has a longitudinal axis (101) and the locking element (120) has a longitudinal axis (121), the two longitudinal axes (101, 121) being spaced apart from each other and extending parallel to each other.

[0162] 10. The rear transmission (10) according to any of the above examples, wherein the locking element (120) has a longitudinal axis (121) and the bolt housing (130) has a housing longitudinal axis (131), the two longitudinal axes (121, 131) being spaced apart from each other and extending parallel to each other.

[0163] 11. The rear transmission (10) according to any of the above examples, wherein the locking element (120) is eccentrically supported in the bolt housing (130).

[0164] 12. The rear transmission (10) according to any of the examples above, wherein the locking element (120) is displaceable relative to the bolt housing (130) along its longitudinal axis (121).

[0165] 13. The rear derailleur (10) according to any of the above examples, wherein the locking element (120) is formed by a pusher having a contact surface (126) for locking the chain guide configuration (90) relative to the movable element (40), the pusher being engaged in a form-fit or compression fit on one of the components by means of the contact surface in at least one locked position, particularly on the edge or opening of the outer cover plate (93a) of the chain guide configuration (90).

[0166] 14. The rear transmission (10) according to any of the above examples, wherein the locking element (120) is engaged in a first locked position on an upper cover arm (94) between the upper chain guide roller (91) and the pivot (41), wherein entering the first locked position removes the rear wheel.

[0167] 15. The rear transmission (10) according to any of the above examples, wherein the locking element (120) is engaged in a second locking position on a lower cover arm (95) between the lower chain guide roller (92) and the pivot (41), wherein the rear transmission (10) is configured relative to the multi-layer pinion configuration in the second locking position.

[0168] 16. The rear transmission (10) according to any of the above examples, wherein the pusher (120) has a pressure surface / pressure end (122) for manual operation.

[0169] 17. The rear transmission (10) according to any of the examples above, wherein the pusher (120) is axially locked relative to the bolt housing (130) by a locking ring (140).

[0170] 18. The rear transmission (10) according to any of the above examples, wherein the bolt housing (130) has a resilient hook (134).

[0171] 19. The rear transmission (10) according to any of the above examples, wherein the locking device (100) consisting of the locking element (120) and the bolt housing (130) can be supported on the movable element (40) in a first position or a second position, in particular in a receiving opening (43) of the movable element (40).

[0172] 20. The rear transmission (10) according to any of the above examples, wherein the resilient hook (134) of the bolt housing (130) works in a first position with a first undercut (44a) in the receiving opening (43) of the movable element (40) or in a second position with a second undercut (44b) to lock the locking device (120) axially relative to the movable element (40).

[0173] 21. The rear derailleur (10) according to any of the above examples, wherein the derailleur (10) is adapted to be coaxially mounted on the rear wheel axle (A) of a bicycle, and the base element (20) includes a first connecting end for coaxial mounting on the rear wheel axle (A) and a second connecting end for coupling with a pivoting mechanism (30).

[0174] 22. The rear transmission (10) according to any one of the above examples, wherein the first connecting end of the base element (20) has a first arm and a second arm, the first and second arms being axially spaced apart from each other, wherein, in the state of being mounted on the frame (1), the first arm is located on the axially inner side of the frame (1), and the second arm is located on the axially outer side of the frame (1).

[0175] 23. The rear transmission (10) according to any one of the above examples, wherein the second connecting end of the base element (20) has a first axle seat (29a) for a first pivot (31) of the pivoting mechanism (30) and a second axle seat (29a) for a second pivot (32) of the pivoting mechanism (30), wherein the first axle seat (29a) and the second axle seat (29b) are respectively oriented substantially orthogonally to the rear wheel axle (A).

[0176] 24. The rear transmission (10) according to any one of the above examples, wherein the transmission includes an electromechanical drive (50) arranged in the region of the base element (20).

[0177] 25. A method for configuring a bicycle drivetrain, the bicycle drivetrain comprising...

[0178] The rear transmission (10) according to any one of the above examples

[0179] Multi-layer pinion configuration (4), front sprocket and chain (5),

[0180] The method for setting the rear transmission (10) relative to the multi-layer pinion configuration (4) includes the following steps:

[0181] a) Determine the bicycle category,

[0182] b) Depending on the bicycle type, switch to a reference pinion (R), specifically one of the middle pinions of the multi-layer pinion configuration (4), such that the chain (5) engages with the reference pinion (R).

[0183] c) Select a setting position according to the bicycle type, and set the locking device (100) in the first, second, or third position.

[0184] d) Move the locking device (100) into the operating position such that the chain guide configuration (90) is fixed relative to the movable element (40).

[0185] e) Rotate the transmission (10) about the rear wheel axle (A) until the desired chain tension is achieved.

Claims

1. A rear derailleur (10) for a bicycle gear shifting device, characterized in that, Comprise: a base element (20) which can be mounted on a bicycle frame, a movable element (40) which is coupled to the base element (20) and can be displaced relative to this base element, a chain guide arrangement (90) which is coupled to the movable element (40) and can be pivoted relative to this movable element about a pivot axis (41), a pretensioning device by means of which the chain guide arrangement (90) can be pretensioned relative to the movable element (40) about the pivot axis (41) into a starting position, wherein the chain guide arrangement (90) can be pivoted out of the starting position about the pivot axis (41) into different working positions counter to the tensioning force of the pretensioning device, and at least one locking device (100) which is adapted to lock the chain guide arrangement (90) relative to the movable element (40) in at least one locking position which is different from the starting position, wherein the locking device (100) has a locking element (120) which can be displaced between a non-acting position in which the locking device (100) releases the chain guide arrangement (90) relative to the movable element (40) and at least one acting position in which the locking device (100) holds the chain guide arrangement (90) in the at least one locking position, the locking device (100) has a longitudinal axis (101) and the locking element (120) has a longitudinal axis (121), both longitudinal axes (101, 121) extending spaced apart and parallel to one another.

2. The rear derailleur (10) according to claim 1, characterized in that the chain guide arrangement (90) has at least one contact element in the form of a cover plate (93a) or an opening in the cover plate (93a), which contact element cooperates with the locking element (120) or can be snapped together with the locking element in order to lock the chain guide arrangement (90) in the at least one locking position.

3. The rear derailleur (10) according to claim 1, characterized in that the locking device (100) is arranged in a receiving opening (43) of the movable element (40).

4. The rear derailleur (10) according to claim 1, characterized in that the locking element (120) can be displaced towards the pivot axis (41) or can be displaced parallel to the pivot axis.

5. The rear derailleur (10) according to claim 1, characterized in that the locking element (120) can be displaced along the longitudinal axis (121) between the acting position and the non-acting position.

6. The rear derailleur (10) according to claim 1, characterized in that the locking device (100) further has a bolt housing (130) for supporting the locking element (120).

7. The rear derailleur (10) according to claim 6, characterized in that the locking element (120) is pretensioned into the non-acting position by means of a spring device (150).

8. The rear derailleur (10) according to claim 7, characterized in that the locking element (120) has the longitudinal axis (121) and the bolt housing (130) has a housing longitudinal axis (131), which two longitudinal axes (121, 131) extend spaced apart and parallel to one another.

9. The rear derailleur (10) according to claim 8, characterized in that the locking element (120) is eccentrically supported in the bolt housing (130).

10. The rear derailleur (10) according to claim 9, characterized in that the locking element (120) is formed by a push pin, which push pin is equipped with a contact surface (126) and which, in order to lock the chain guide arrangement (90) relative to the movable element (40), is clamped in the at least one locking position in a form-fit or press-fit manner on an edge or opening of a cover plate (93a) of the chain guide arrangement (90) by means of the contact surface.

11. The rear derailleur (10) according to claim 10, characterized in that the locking element (120) is clamped in a second locking position on a lower cover arm (95) between a lower chain guide roller (92) and the pivot axle (41), wherein the second locking position is entered in order to set the rear derailleur (10) relative to a multi-stage sprocket arrangement.

12. The rear derailleur (10) according to claim 11, characterized in that the push pin (120) has a pressure end (122) for manual manipulation.

13. The rear derailleur (10) according to claim 12, characterized in that the locking device (100) composed of the locking element (120) and the bolt housing (130) can be supported in the first or second position in a receiving opening (43) of the movable element (40).

14. A method for setting a bicycle transmission, which bicycle transmission comprises a rear derailleur (10) according to any one of claims 1 to 13, a multi-stage sprocket arrangement (4), a front toothed disc and a chain (5), wherein the rear derailleur (10) is set relative to the multi-stage sprocket arrangement (4), the method having the following steps: a) determining a bicycle category, b) switching to a reference sprocket (R) depending on the bicycle category, such that the chain (5) meshes with the reference sprocket (R), c) selecting a setting position depending on the bicycle category and setting the locking device (100) in the first, second or third position, d) moving the locking device (100) into the active position, such that the chain guide arrangement (90) is fixed relative to the movable element (40), e) turning the rear derailleur (10) rearward about a rear wheel axle (A) until a desired chain tension is achieved.

15. The method of claim 14, wherein, The reference sprocket (R) is one of the intermediate sprockets of the multi-stage sprocket arrangement (4).

Images