Damped rear derailleur and bicycle

Abstract

The damping rear derailleur comprises a base member, an actuating member, a movable member, a chain guide member, the movable member comprises a one-way bearing, a P joint seat and a main shaft, the one-way bearing comprises a mandrel, a rolling element and an external assembly connected in sequence from inside to outside; the main shaft is fixedly connected with one end of the chain guide member, and is fixedly connected with the external assembly after penetrating the P joint seat; wherein when the main shaft rotates in a first direction, the rolling element does not generate friction force with the mandrel, and when the main shaft rotates in a second direction, the rolling element generates friction force with the mandrel. The embodiment of the application achieves the purpose of one-way damping of the rear derailleur, so that the chain does not produce undesirable relaxation, greatly improving the practicability and applicability of the rear derailleur.

Description

Technical Field

[0001] This invention relates to the field of bicycle derailleurs, and more particularly to a damped rear derailleur and a bicycle. Background Technology

[0002] The rear derailleur, or simply rear derailleur, is an important component of the derailleur system on multi-speed bicycles such as mountain bikes and road bikes. It is responsible for shifting the chain across different sprockets to cope with different road conditions, allowing riders to use their bodies more efficiently to propel the bicycle forward.

[0003] However, during cycling, such as on bumpy roads, the inertia of the bumps and vibrations will cause the chain guide and the connecting seat to rotate, which will cause the chain to loosen and fall off, resulting in poor usability of the rear derailleur. Summary of the Invention

[0004] The purpose of this invention is to provide a damped rear derailleur and bicycle, which aims to solve the problem of poor practicality of existing rear derailleurs.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: providing a damped rear derailleur, comprising:

[0006] The system includes a base component, an actuating component, a movable component, and a chain guide component. One end of the actuating component is rotatably mounted on the base component, and the other end is rotatably mounted on the movable component. The movable component is rotatably mounted on one end of the chain guide component.

[0007] The movable component includes a one-way bearing, a P-joint seat, and a main shaft. The one-way bearing includes a spindle, rolling elements, and an external assembly connected in sequence from the inside to the outside.

[0008] The main shaft is fixedly connected to one end of the chain guide member, and after passing through the P joint seat, it is fixedly connected to the external component.

[0009] When the main shaft rotates in the first direction, the rolling element does not generate friction with the spindle; when the main shaft rotates in the second direction, the rolling element generates friction with the spindle.

[0010] Furthermore, the P joint seat is provided with a first mounting groove, in which a mounting base is fixedly disposed, and the spindle is connected to the mounting base;

[0011] The free end of the spindle passes through the P joint seat and extends into the first mounting groove, wherein the external component is fixed on the free end of the spindle.

[0012] Furthermore, it also includes a controllable component disposed on the mounting base, the controllable component being used to control the relative rotation or fixation of the mandrel and the P joint seat.

[0013] Furthermore, the controllable component includes:

[0014] A ratchet, which is coaxially fixed on the spindle;

[0015] A ratchet pawl, which is rotatably connected to the mounting base;

[0016] A control element is disposed on the mounting base and connected to the pawl, for controlling the pawl to connect with the ratchet or to control the pawl to disconnect from the ratchet.

[0017] Furthermore, the inner sidewall of the first mounting groove is provided with a first limiting groove and a second limiting groove at intervals, and the control component includes:

[0018] A switch shaft is rotatably connected in the first mounting groove, and a pawl is coaxially disposed on the switch shaft.

[0019] A lever, which is coaxially fixed on the switch shaft;

[0020] When the pull tab is at least partially embedded in the first limiting groove, the free end of the pawl is embedded in one of the tooth grooves of the ratchet; when the pull tab is at least partially embedded in the second limiting groove, the free end of the pawl disengages from the tooth groove of the ratchet.

[0021] Furthermore, the switch shaft includes a first cylindrical portion connected to each other and a second cylindrical portion having a notch on the outer side, and the ratchet is sleeved on the first cylindrical portion;

[0022] The pull tab includes a sleeve portion, a connecting portion, and an abutting portion connected in sequence. The connecting portion is sleeved on the second cylindrical portion. One end of the connecting portion is connected to one side of the sleeve portion, and the other end forms an angle with the abutting portion. The connection between the connecting portion and the abutting portion is used to embed into the first limiting groove or the second limiting groove.

[0023] The pawl is provided with a flange for abutting one end of the connecting part;

[0024] The control unit also includes an elastic reset member disposed on the mounting base and used to drive the pawl into the tooth groove of the ratchet.

[0025] Furthermore, the elastic reset member is a first torsion spring sleeved on the switch shaft, with one end of the first torsion spring fixed to the mounting base and the other end abutting against the side of the flange away from the abutting portion.

[0026] Furthermore, the outer circumferential side of the mandrel has a plurality of meshing teeth in a circular array, and the controllable component includes:

[0027] A meshing plate, which is rotatably disposed on the mounting base, and the meshing plate is provided with a groove for engaging with the meshing teeth;

[0028] A positioning component is disposed on the movable member, and the positioning component is used to define the position of the engagement piece after the mandrel engages with the engagement piece.

[0029] Furthermore, the positioning component includes:

[0030] A rotating shaft, which is rotatably connected to the mounting base;

[0031] A cam, which is fixed on the rotating shaft;

[0032] A limiting shaft, which is fixed on the mounting base;

[0033] The second torsion spring is sleeved on the limiting shaft, and one extension end of the second torsion spring is fixed on the movable member, and the other extension end abuts against the outside of the meshing plate, so as to drive one extension end of the meshing plate to abut against the side of the cam.

[0034] This invention also provides a bicycle, which includes a bicycle body and a damped rear derailleur as described above, the damped rear derailleur being mounted on the bicycle body.

[0035] This invention provides a damped rear derailleur and a bicycle, wherein: the damped rear derailleur includes a base component, an actuating component, a movable component, and a chain guide component. One end of the actuating component is rotatably mounted on the base component, and the other end is rotatably mounted on the movable component. The movable component is rotatably mounted at one end of the chain guide component. The movable component includes a one-way bearing, a P-joint seat, and a main shaft. The one-way bearing includes a spindle, rolling elements, and an external assembly connected sequentially from the inside to the outside. The main shaft is fixedly connected to one end of the chain guide component and, after passing through the P-joint seat, is fixedly connected to the external assembly. When the main shaft rotates in a first direction, the rolling elements do not generate friction with the spindle; when the main shaft rotates in a second direction, the rolling elements generate friction with the spindle. This invention achieves one-way damping in the rear derailleur, preventing unwanted chain slack and greatly improving the practicality and applicability of the rear derailleur. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the damped rear derailleur provided in Embodiment 1 of the present invention from a first perspective.

[0038] Figure 2 is a structural schematic diagram of the damped rear derailleur provided in Embodiment 1 of the present invention from a second perspective.

[0039] Figure 3 is a partial exploded view of the damped rear derailleur provided in Embodiment 1 of the present invention;

[0040] Figure 4 is a partial structural schematic diagram of the damped rear derailleur provided in Embodiment 1 of the present invention;

[0041] Figure 5 is a partial cross-sectional view of the damped rear derailleur provided in Embodiment 1 of the present invention;

[0042] Figure 6 is a partial exploded view of the damped rear derailleur provided in Embodiment 2 of the present invention.

[0043] Explanation of the markings in the image:

[0044] 1. Base component; 11. Actuating component; 12. Movable component; 13. Chain guide component; 131. First chain plate; 132. Second chain plate; 133. Guide wheel; 134. Tensioner wheel; 14. Washer; 15. Clearance groove; 16. Return spring; 2. One-way bearing; 21. Spindle; 22. Rolling element; 23. External component; 3. P joint seat; 32. First mounting groove; 33. First limiting groove; 34. Second limiting groove; 35. Third limiting groove; 36. Second mounting groove; 37. First inclined surface; 38. Second inclined surface; 4. Main 5. Shaft; 51. Ratchet; 52. Pad; 53. Control component; 54. Switch shaft; 55. Pull tab; 56. Gear groove; 67. Third inclined surface; 68. First cylindrical part; 69. Second cylindrical part; 60. Sleeve part; 61. Connecting part; 62. Abutting part; 63. Flange; 7. First torsion spring; 80. Gear; 81. Engaging piece; 82. Gear groove; 91. Rotating shaft; 92. Cam; 93. Limiting shaft; 94. Second torsion spring; 10. Mounting seat; 101. P joint cover; 102. First rotating handle; 103. Second rotating handle; 104. Limiting ring. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0047] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0048] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0049] Example 1:

[0050] Combination Figures 1 to 5 This invention provides a damped rear derailleur, comprising:

[0051] The base component 1, the actuating component 11, the movable component 12, and the chain guide component 13 are provided. One end of the actuating component 11 is rotatably disposed on the base component 1 and the other end is rotatably disposed on the movable component 12. The movable component 12 is rotatably disposed on one end of the chain guide component 13.

[0052] The movable component 12 includes a one-way bearing 2, a P-joint seat 3 and a main shaft 4. The one-way bearing 2 includes a spindle 21, a rolling element 22 and an external component 23 connected in sequence from the inside to the outside.

[0053] The main shaft 4 is fixedly connected to one end of the chain guide member 13, and after passing through the P joint seat 3, it is fixedly connected to the external component 23.

[0054] When the main shaft 4 rotates in the first direction, the rolling element 22 does not generate friction with the spindle 21; when the main shaft 4 rotates in the second direction, the rolling element 22 generates friction with the spindle 21.

[0055] Combination Figure 1 and Figure 2 In this embodiment, it should be noted that this application mainly improves the damping component, while the base component 1, actuation component 11, movable component 12 and chain guide component 13 all adopt existing related technologies, which will not be elaborated further in this application.

[0056] Combination Figure 1 and Figure 2 Specifically, the chain guide component 13 includes a first chain plate 131, a second chain plate 132, a guide wheel 133, and a tension wheel 134. The guide wheel 133 is rotatably mounted between the first chain plate 131 and the second chain plate 132 by bolting and is located at one end of the two chain plates. The tension wheel 134 is rotatably mounted between the first chain plate 131 and the second chain plate 132 by bolting and is located at the other end of the two chain plates. The main shaft 4 is fixed to one end of the first chain plate 131 by bolts.

[0057] In this embodiment, the outer component 23 is the outer ring, and the rolling element 22 includes, but is not limited to, needle rollers or balls. Since the main shaft 4 and the P joint seat 3 are rotatably connected, and the main shaft 4 and the outer ring component 23 are fixedly connected, when the movable component 12 rotates relative to the first chain plate 131, the P joint seat 3 will rotate relative to the one-way bearing 2. At this time, based on the one-way damping function of the one-way bearing 2 itself, when the main shaft 4 rotates in the first direction (e.g., clockwise), the rolling element 22 does not generate friction with the spindle 21. When the main shaft 4 rotates in the second direction (e.g., counterclockwise), the rolling element 22 generates friction with the spindle 21.

[0058] In the application scenario of bicycle riding, during the riding of bicycles on rough terrain, the bumps and vibrations can cause the chain guide member 13 to rotate counterclockwise, thereby causing the chain to become undesirably slack. However, the rear derailleur of this application has a one-way damping function. Specifically, when the main shaft 4 rotates in the clockwise direction, the rolling element 22 does not generate friction with the spindle 21. When the main shaft 4 rotates in, for example, the counterclockwise direction, the rolling element 22 generates friction with the spindle 21. That is to say, when the main shaft 4 rotates in the clockwise direction, the one-way bearing 2 does not hinder the rotation between the P joint seat 3 and the main shaft 4, while when the main shaft 4 rotates in the counterclockwise direction, the one-way bearing 2 hinders the rotation between the P joint seat 3 and the main shaft 4, so that the chain guide member 13 cannot rotate counterclockwise, thus preventing the chain from becoming undesirably slack.

[0059] Combination Figure 3 , Figure 4 and Figure 5 In one specific embodiment,

[0060] The P joint seat 3 is provided with a first mounting groove 32, and a mounting base 10 is fixedly installed in the first mounting groove 32. The spindle 21 is connected to the mounting base 10.

[0061] The free end of the spindle 4 passes through the P joint seat 3 and extends into the first mounting groove 32, wherein the external component 23 is fixed on the free end of the spindle 4.

[0062] In this embodiment, the P-joint seat 3 is rotatably connected to the actuating member 11 and to the first chain plate 131. Specifically, a gasket 14 is provided between the P-joint seat 3 and the first chain plate 131. The gasket 14 is fixedly connected to the first chain plate 131. A clearance groove 15 is provided at one end of the P-joint seat 3 near the first chain plate 131. A return spring 16 is provided in the clearance groove 15. One end of the return spring 16 is fixed to the bottom of the clearance groove 15 and the other end is fixed to the gasket 14, so as to reset the P-joint seat 3 after it rotates to a preset position.

[0063] In this embodiment, the P-joint seat 3 is provided with a second mounting groove 36 that communicates with the first mounting groove 32. The main shaft 4 passes through the second mounting groove 36 and extends into the first mounting groove 32 to achieve a fixed connection with the external component 23. When the chain guide member 13, the first chain plate 131, the main shaft 4 and the external component 23 rotate simultaneously in the first direction, the rolling element 22 does not generate friction with the spindle 21, that is, the spindle 21 has no frictional contact with the P-joint seat 3. However, when the chain guide member 13, the first chain plate 131, the main shaft 4 and the external component 23 rotate in the second direction, the rolling element 22 generates friction with the spindle 21, that is, the spindle 21 has frictional contact with the P-joint seat 3, thereby preventing the chain guide member 13 from rotating in an undesirable direction.

[0064] Combination Figure 3 , Figure 4 and Figure 5 In one specific embodiment, the damped rear derailleur of this application further includes a controllable component disposed on the mounting base 10, the controllable component being used to control the relative rotation or fixation of the spindle 21 and the P joint seat 3.

[0065] In this embodiment, to improve the applicability of the rear derailleur, a controllable component for controlling the spindle 21 is also provided. For ease of explanation, the mode corresponding to this controllable component is named the bump mode and the smooth mode. The specific application scenario of the bump mode is as follows: the cyclist can use the controllable component to control the spindle 21 to be relatively fixed with the mounting base 10 on bumpy roads, so that when the chain guide component 13 rotates in the first direction, the one-way bearing 2 does not produce a one-way damping effect, and when the chain guide component 13 rotates in the second direction, it produces a one-way damping effect on the bearing 2. The specific application scenario of the smooth mode is as follows: the cyclist can use the chain guide component 13 to control the spindle 21 to rotate relative to the one-way bearing 2 on smooth roads, that is, no matter whether the chain guide component 13 rotates in the first direction or the second direction, the one-way bearing 2 does not produce a one-way damping effect. By selecting the mode of the controllable component as described above, the cyclist's operating comfort can be effectively improved. It is worth noting that this application does not specifically limit which control mode to select under what road conditions during riding.

[0066] Combination Figure 3 , Figure 4 and Figure 5 In one specific embodiment, the controllable component includes:

[0067] Ratchet 5, which is coaxially fixed on the spindle 21;

[0068] Pawl 51, which is rotatably connected to the mounting base 10;

[0069] A control element 52 is disposed on the mounting base 10 and connected to the pawl 51, and is used to control the pawl 51 to connect with the ratchet 5 or to control the pawl 51 to disconnect from the ratchet 5.

[0070] In this embodiment, the mounting base 10 can be bolted to the P joint seat 3. The mounting base 10 is located between the ratchet 5 and the one-way bearing 2. The spindle 21 is rotatably connected to the mounting base 10. In this embodiment, the ratchet 5 can be fixed to the spindle 21 by a key connection. In actual use, the user controls the pawl 51 to connect to the ratchet 5 through the control component 52, that is, the free end of the pawl 51 is inserted into one of the tooth grooves 55 of the ratchet 5, so that the pawl 51 and the spindle 21 can no longer rotate, that is, the spindle 21 is fixed relative to the P joint seat 3. At this time, the rear derailleur enters the smooth mode; or the free end of the pawl 51 is pulled out from one of the tooth grooves 55 of the ratchet 5, so that the ratchet 5 and the spindle 21 can rotate simultaneously, that is, the spindle 21 rotates relative to the P joint seat 3. At this time, the rear derailleur enters the bump mode.

[0071] In one specific embodiment, the inner sidewall of the first mounting groove 32 is provided with a first limiting groove 33, a second limiting groove 34, and a third limiting groove 35 at intervals, and the control component 52 includes:

[0072] A switch shaft 53 is rotatably connected to the first mounting groove 32, and a pawl 51 is coaxially disposed on the switch shaft 53.

[0073] A lever 54 is coaxially fixed on the switch shaft 53;

[0074] When the pull tab 54 is at least partially embedded in the first limiting groove 33, the free end of the pawl 51 disengages from the tooth groove 55 of the ratchet 5 and enters the third limiting groove 35. When the pull tab 54 is at least partially embedded in the second limiting groove 34, the free end of the pawl 51 is embedded in one of the tooth grooves 55 of the ratchet 5.

[0075] In this embodiment, the first limiting groove 33 and the second limiting groove 34 are spaced apart. The rotation of the derailleur 54 is controlled by the switch shaft 53. When the rear derailleur needs to enter the smooth mode, the switch shaft 53 is rotated, causing the pawl 51 to rotate and the free end of the pawl 51 to engage in one of the tooth grooves 55 of the ratchet 5. Due to the presence of the second limiting groove 34, the derailleur 54 will be engaged in the second limiting groove 34 and limited. Only when the switch shaft 53 is subjected to an external force, such as when the user applies a opposite force to the switch shaft 53, causing the free end of the pawl 51 to move towards the tooth groove. When the pawl 51 moves away from the tooth groove 55, the lever 54 will slide out of the second limiting groove 34. Similarly, the first limiting groove 33 is used to limit the lever 54 after the pawl 51 moves away from the tooth groove 55, and the third limiting groove 35 is used to limit the pawl 51 after the pawl 51 moves away from the tooth groove 55. In other words, the first limiting groove 33, the second limiting groove 34 and the third limiting groove 35 can reduce the unwanted rotation of the switch shaft 53 by using the lever 54 in conjunction, thereby ensuring that the rear derailleur is always in the desired smooth mode or bumpy mode.

[0076] It should be understood that, during manufacturing, the third limiting groove 35 may be unnecessary depending on actual needs. Since the pull tab 54 is limited by the first limiting groove 33, the switch shaft 53 will not rotate without the action of external force, thereby preventing the pawl 51 from rotating undesirably with the mounting base 10. Through the combined use of the first limiting groove 33 and the third limiting groove 35, the limiting stability between the control component 52 and the mounting base 10 can be improved.

[0077] Combination Figure 3 , Figure 4 and Figure 5In one specific embodiment, the switch shaft 53 includes a first cylindrical portion 6 connected to each other and a second cylindrical portion 61 having a notch on the outside, and the ratchet 5 is sleeved on the first cylindrical portion 6.

[0078] The pull tab 54 includes a sleeve portion 62, a connecting portion 63, and an abutting portion 64 connected in sequence. The connecting portion 63 is sleeved on the second cylindrical portion 61. One end of the connecting portion 63 is connected to one side of the sleeve portion 62, and the other end forms an angle with the abutting portion 64. The connection between the connecting portion 63 and the abutting portion 64 is used to embed into the first limiting groove 33 or the second limiting groove 34.

[0079] The pawl 51 is provided with a flange 65 for abutting one end of the connecting part 63;

[0080] The control element 52 also includes an elastic reset element disposed on the mounting base 10 and used to drive the pawl 51 into the tooth groove 55 of the ratchet 5.

[0081] In this embodiment, the switch shaft 53 is rotatably connected to the mounting base 10. One end of the switch shaft 53 is provided with a first rotating handle 102 to facilitate rotating the switch shaft 53. The other end of the switch shaft 53 is fitted with a limiting ring 104. The limiting ring 104 abuts against the end of the mounting base 10 away from the first rotating handle 102 to prevent the switch shaft 53 from separating from the mounting base 10.

[0082] It should be noted that the P joint seat 3 of this application is also provided with a P joint cover 101 for sealing the opening of the first mounting groove 32. The P joint cover 101 can be detachably connected to the P joint seat 3 by bolting, thereby playing a role in dust prevention and protection of the structure inside the first mounting groove 32. The switch shaft 53 passes through the P joint cover 101 and is fixedly connected to the first rotating handle 102.

[0083] Since the pull tab 54 rotates coaxially with the switch shaft 53, in order to facilitate the insertion of the pull tab 54 into the first limiting groove 33 or the second limiting groove 34, and to facilitate the insertion of the free end of the pawl 51 into the third limiting groove 35, the structures of the first limiting groove 33, the second limiting groove 34, and the second limiting groove 34 in this application are identical. The second limiting groove 34 includes a first inclined surface 37 and a second inclined surface 38 connected to each other. The first inclined surface 37 and the second inclined surface 38 extend in a direction away from each other. This design allows the connection between the connecting part 63 and the abutting part 64 to be better positioned in the first limiting groove 34. The connecting part 63 is located within the first limiting groove 33 or the second limiting groove 34, and one side of the connecting part 63 can abut against the first inclined surface 37 of the first limiting groove 33 or the second limiting groove 34. The abutting part 64 is located within the first limiting groove 33 or the second limiting groove 34, thereby increasing the contact area between the pull tab 54 and the first limiting groove 33 or the second limiting groove 34, thereby improving the limiting stability of the pull tab 54 by the first limiting groove 33 and the second limiting groove 34. At the same time, it should be noted that a third inclined surface 56 is also provided on the free end side of the pawl 51, which abuts against the first inclined surface 37 in the third limiting groove 35.

[0084] Combination Figure 3 , Figure 4 and Figure 5 Specifically, the sleeve part 62, the connecting part 63 and the abutting part 64 are integrally formed to improve the structural stability of the pull tab 54, wherein the angle between the connecting part 63 and the abutting part 64 is 90 degrees.

[0085] In this embodiment, to reduce manual operation and improve the ease of use of the rear derailleur, an elastic reset component is provided on the mounting base 10. This component serves two purposes: first, it automatically drives the pawl 51 to engage in one of the tooth grooves 55 of the ratchet 5 after the user drives the derailleur 54 to disengage from the first limiting groove 33; second, it presses one side of the abutment portion 64 against the second inclined surface 38 of the first limiting groove 33 or the second limiting groove 34 to improve the connection stability between the derailleur 54 and the mounting base 10.

[0086] In one specific embodiment, the elastic reset member is a first torsion spring 7 sleeved on the switch shaft 53. One end of the first torsion spring 7 is fixed to the mounting base 10, and the other end abuts against the side of the flange 65 away from the abutment portion 64.

[0087] In this embodiment, the rotating end of the pawl 51, which is used to connect with the switch shaft 53, is provided with a flange 65. The two sides of the flange 65 are respectively used to abut against the sleeve part 62 and the first torsion spring 7. Specifically, the first torsion spring 7 and the pawl 51 are both sleeved on the switch shaft 53. The rotating end of the pawl 51 is located above the spring ring of the first torsion spring 7. The two ends of the first torsion spring 7 are respectively connected to the side of the mounting base 10 away from the limiting ring 104 and the side of the flange 65 away from the abutment part 64. It should be noted that when the first torsion spring 7 is installed, the first torsion spring 7 should always have an elastic force that drives the flange 65 to rotate. Specifically, it should be an elastic force that drives the flange 65 to rotate the free end of the pawl 51 in the direction of embedding into the tooth groove 55 of the ratchet 5.

[0088] Example 2:

[0089] Combination Figure 6 The difference between this embodiment and Embodiment 1 lies in the controllable component. Specifically, the outer circumferential array of the mandrel 21 has multiple teeth 8, and the controllable component includes:

[0090] The meshing plate 81 is rotatably disposed in the first mounting groove 32, and the meshing plate 81 is provided with a meshing groove 82 for engaging with the meshing tooth 8;

[0091] A positioning component is disposed on the movable member 12, and the positioning component is used to limit the position of the engagement piece 81 after the mandrel 21 engages with the engagement piece 81.

[0092] In this embodiment, one end of the meshing plate 81 is rotatably connected to the mounting base 10 via a pin. In this embodiment, the spindle 21 is designed as a cylinder to increase the number of teeth 8. At the same time, the meshing plate 81 is designed as a C-shape to increase the meshing strength between the meshing plate 81 and the spindle 21, reduce the load on a single tooth 8, and extend the service life of the control component.

[0093] When entering the bumpy mode, the positioning component engages the meshing plate 81 with the meshing tooth 8, so that the spindle 21 and the movable component 12 are relatively fixed. When entering the smooth mode, it is only necessary to control the positioning component to separate the meshing plate 81 from the meshing tooth 8. The operation is simple and easy to implement.

[0094] In one specific embodiment, the positioning component includes:

[0095] A rotating shaft 9 is rotatably connected within the first mounting groove 32;

[0096] Cam 91, which is fixed on the rotating shaft 9;

[0097] A limiting shaft 92 is fixedly disposed within the first mounting groove 32;

[0098] The second torsion spring 93 is sleeved on the limiting shaft 92, and one extension end of the second torsion spring 93 is fixed on the movable member 12, and the other extension end abuts against the outside of the engagement piece 81, so as to drive one extension end of the engagement piece 81 to abut against the side of the cam 91.

[0099] In this embodiment, the rotating shaft 9 can be rotatably connected to the mounting base 10 via a bearing, and the rotating shaft 9 extends through the connecting cover and is fixed to the second rotating handle 103, thereby facilitating the cycling user to control the rotation of the rotating shaft 9 via the second rotating handle 103. One end of the engaging plate 81 is located between the second torsion spring 93 and the cam 91.

[0100] When switching from bumpy mode to smooth mode, the rider turns the second rotary handle 103, which drives the shaft 9 and cam 91 to rotate. The tip of cam 91 presses against an extension of the engagement piece 81, thereby causing the engagement piece 81 to separate from the tooth 8. In other words, the spindle 21 is not held tightly at this time, so the one-way resistance fails. Due to the presence of the second torsion spring 93, cam 91 will always be in contact with engagement piece 81, thus limiting the movement of cam 91.

[0101] When switching from smooth mode to bumpy mode, the shaft 9 is rotated in the opposite direction, causing the cam 91 to rotate. Under the action of the second torsion spring 93, the meshing plate 81 moves from being pressed against the tip of the cam 91 (the end of the cam 91 that is shortest from its rotation axis) to being pressed against the non-tip of the cam 91 (the end of the cam 91 that is not shortest from its rotation axis). At this time, the meshing plate 81 rotates with the mounting base 10 until it meshes with the meshing tooth 8. That is to say, at this time the spindle 21 is held tightly, and the one-way bearing 2 and the P joint seat 3 are fixed together, thus achieving the above-mentioned one-way damping effect.

[0102] In this embodiment, the limiting shaft 92 is fixed on the mounting base 10. Since the second torsion spring 93 has better elastic deformation capability, it can continuously press an extended end of the meshing piece 81 against the periphery of the cam 91.

[0103] This invention also provides a bicycle, including a bicycle body and a damped rear derailleur as described above, the damped rear derailleur being mounted on the bicycle body (not shown).

[0104] Because the rear derailleur of this application has a simple and compact structure, it has high applicability and practicality.

[0105] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A damping rear derailleur, comprising: a base member (1), an actuating member (11), a movable member (12), a chain guide member (13), one end of the actuating member (11) being rotatably arranged on the base member (1), one end of the actuating member (11) being rotatably arranged on the movable member (12), the movable member (12) being rotatably arranged on one end of the chain guide member (13), characterized in that the movable member (12) comprises a one-way bearing (2), a P joint base (3) and a main shaft (4), the one-way bearing (2) comprising a core shaft (21), a rolling element (22) and an outer assembly (23) connected in sequence from inside to outside; the main shaft (4) is fixedly connected with one end of the chain guide member (13) and is fixedly connected with the outer assembly (23) after penetrating the P joint base (3); wherein when the main shaft (4) rotates in a first direction, the rolling element (22) does not generate friction with the core shaft (21), and when the main shaft (4) rotates in a second direction, the rolling element (22) generates friction with the core shaft (21); the P joint base (3) is provided with a first mounting groove (32), and a mounting seat (10) is fixedly arranged in the first mounting groove (32), and the core shaft (21) is connected with the mounting seat (10); the free end of the main shaft (4) penetrates the P joint base (3) and extends into the first mounting groove (32), and the outer assembly (23) is fixedly arranged on the free end of the main shaft (4); further comprising a controllable member arranged on the mounting seat (10), the controllable member being used for controlling the relative rotation or fixation of the core shaft (21) and the P joint base (3); the controllable member comprises: a ratchet wheel (5) coaxially fixedly arranged on the core shaft (21); a pawl (51) rotatably connected to the mounting seat (10); a control member (52) arranged on the mounting seat (10) and connected with the pawl (51), used for controlling the connection of the pawl (51) with the ratchet wheel (5) or controlling the disconnection of the pawl (51) from the ratchet wheel (5); the inner side wall of the first mounting groove (32) is sequentially and spacedly provided with a first limiting groove (33) and a second limiting groove (34), and the control member (52) comprises: a switch shaft (53) rotatably connected in the first mounting groove (32), and the pawl (51) is coaxially arranged on the switch shaft (53); a pull tab (54) coaxially fixedly arranged on the switch shaft (53); wherein when the pull tab (54) is at least partially embedded in the first limiting groove (33), the free end of the pawl (51) is disengaged from the tooth groove (55) of the ratchet wheel (5), and when the pull tab (54) is at least partially embedded in the second limiting groove (34), the free end of the pawl (51) is embedded in one of the tooth grooves (55) of the ratchet wheel (5).

2. The damping rear derailleur according to claim 1, characterized in that: the switch shaft (53) comprises a first cylindrical portion (6) and a second cylindrical portion (61) with a notch on the outer side, and the ratchet wheel (5) is sleeved on the first cylindrical portion (6); the pull tab (54) comprises a sleeving portion (62), a connecting portion (63) and an abutting portion (64) connected in sequence, the connecting portion (63) is sleeved on the second cylindrical portion (61), one end of the connecting portion (63) is connected to one side of the sleeving portion (62), the other end forms an angle with the abutting portion (64), and the connecting portion (63) is used for being embedded in the first limiting groove (33) or the second limiting groove (34) at the connection position with the abutting portion (64); the pawl (51) is provided with a flange (65) used for abutting against one end of the connecting portion (63); the control member (52) further comprises an elastic reset member arranged on the mounting seat (10) and used for driving the pawl (51) to be embedded in the tooth groove (55) of the ratchet wheel (5).

3. The damped rear derailleur according to claim 2, characterized in that: The elastic reset member is a first torsion spring (7) sleeved on the switch shaft (53), one end of the first torsion spring (7) is fixedly arranged on the mounting seat (10), and the other end abuts against one side of the flange (65) away from the abutting portion (64).

4. The damped rear derailleur according to claim 1, characterized in that, The core shaft (21) is provided with a plurality of meshing teeth (8) on the outer circumferential side, and the controllable member comprises: a meshing piece (81) rotatably arranged on the mounting seat (10), and the meshing piece (81) is provided with a meshing groove (82) used for cooperating with the meshing teeth (8); a positioning assembly arranged on the movable member (12), and the positioning assembly is used for limiting the position of the meshing piece (81) after the core shaft (21) meshes with the meshing piece (81).

5. The damped rear derailleur according to claim 4, characterized in that, The positioning assembly comprises: a rotating shaft (9) rotatably connected to the mounting seat (10); a cam (91) fixedly arranged on the rotating shaft (9); a limiting shaft (92) fixedly arranged on the mounting seat (10); and a second torsion spring (93) sleeved on the limiting shaft (92), and one extension end of the second torsion spring (93) is fixedly arranged on the movable member (12), and the other extension end abuts against the outer side of the meshing piece (81), so as to drive one extension end of the meshing piece (81) to abut against the side surface of the cam (91) at all times.

6. A bicycle characterized by: The damping rear derailleur according to any one of claims 1-5 is mounted on the bicycle body.

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