A bicycle rear derailleur and a bicycle using the same

Abstract

The utility model discloses an embodiment of a kind of bicycle rear derailleur and the bicycle applied to it, bicycle rear derailleur includes derailleur main body, fixed component, pivot assembly and adjusting assembly, the fixed component is set on the derailleur main body, one end of the pivot assembly is connected with the fixed component, the other end of the pivot assembly is rotatably connected with one end of the adjusting assembly.The other end of the pivot assembly of the utility model is rotatably connected with one end of adjusting assembly, in this way, rear derailleur can be quickly adjusted when installing, and simple structure greatly simplifies the installation steps of rear derailleur.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a bicycle rear derailleur and a bicycle using the same. Background Technology

[0002] In existing technologies, bicycle derailleurs are typically not directly mounted to the rear axle, but rather attached to the frame via a tail hook (i.e., a rear derailleur hanger). For example, Patent 1 (CN109250030B) discloses a typical structure for connecting a rear derailleur via a tail hook. With the development of integrated bicycle design, a "direct-mount" frame structure has gradually emerged, eliminating the traditional tail hook and instead directly mounting the rear derailleur to the rear axle. This type of structure offers advantages in improving overall vehicle rigidity and simplifying manufacturing processes. For example, Patent 2 (CN113173224A) discloses a direct-mount rear derailleur mounting structure with a double-arm design. This structure secures the rear derailleur to the frame using bolts and nuts. Because the double-arm structure has high axial strength, it effectively resists impacts from external or internal sources, thereby improving the rear derailleur's resistance to damage. However, this structure lacks a fine-tuning mechanism during installation, making it impossible to precisely adjust the derailleur's mounting angle according to specific needs, thus limiting its usability. Furthermore, Patent 3 (CN217575508U) discloses a single-arm mounting structure that uses bolts, nuts, and additional adapters to secure the rear derailleur. While it offers some adjustability, its structure is complex, with numerous components, a cumbersome assembly process, and high manufacturing and maintenance costs.

[0003] In summary, existing rear derailleur mounting structures generally suffer from structural complexity, making it difficult to ensure both strength and ease of installation. There is an urgent need for an improved solution that is simple in structure and easy to install. Utility Model Content

[0004] The purpose of this utility model is to provide a bicycle rear derailleur and a bicycle using the same, aiming to solve the problem that the existing bicycle rear derailleur mounting structure is complex and difficult to ensure both strength and ease of installation.

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: providing a bicycle rear derailleur, including: a derailleur body, a fixing component, a rotating shaft component, and an adjusting component, wherein the fixing component is disposed on the derailleur body, one end of the rotating shaft component is connected to the fixing component, and the other end of the rotating shaft component is rotatably connected to one end of the adjusting component.

[0006] Furthermore, the fixing component is provided with an arc-shaped sliding groove, and the other end of the adjusting component is provided with an arc-shaped sliding part, which is slidably connected to the arc-shaped sliding groove.

[0007] Furthermore, it also includes a limiting component, which is disposed on the fixing component, and one end of the limiting component can abut against the side wall of the arc-shaped sliding part.

[0008] Furthermore, the fixing component includes a fixing part disposed on the side of the arc-shaped sliding groove, and the limiting component includes an adjusting shaft, one end of which is telescopically connected to the fixing part. By adjusting the telescopic length of the adjusting shaft, the other end of the adjusting shaft abuts against the side wall of the arc-shaped sliding part.

[0009] Furthermore, the adjusting shaft and the fixing part are connected by a thread.

[0010] Furthermore, the fixing component includes a fixing body and a fixing arm connected to the fixing body, the rotating shaft assembly includes a rotating shaft body and a limiting part connected to one end of the rotating shaft body, the fixing arm has a first through hole, the other end of the rotating shaft body passes through the first through hole and is rotatably connected to the adjusting component, and the limiting part abuts against the fixing arm from the side away from the adjusting component.

[0011] Furthermore, the adjustment assembly includes an adjustment body, the arc-shaped sliding part is connected to one end of the adjustment body, the other end of the adjustment body is provided with a second through hole, and the other end of the rotating shaft body is rotatably connected to the second through hole.

[0012] Furthermore, the other end of the rotating shaft body is threadedly connected to the second through hole.

[0013] Furthermore, the arc-shaped sliding groove and the fixed arm are distributed on opposite sides of the fixed body.

[0014] This utility model embodiment also provides a bicycle, including the bicycle rear derailleur as described above.

[0015] Furthermore, it also includes a frame and a freewheel, both of which are mounted on the frame, and the adjustment assembly is located on the side of the frame facing the freewheel.

[0016] This utility model provides a bicycle rear derailleur, including: a derailleur body, a fixing component, a pivot assembly, and an adjusting component. The fixing component is disposed on the derailleur body. One end of the pivot assembly is connected to the fixing component, and the other end of the pivot assembly is rotatably connected to one end of the adjusting component. The rotatable connection between the other end of the pivot assembly and the adjusting component allows for quick adjustment during installation of the rear derailleur, and its simple structure greatly simplifies the installation process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a rear derailleur provided in an embodiment of this utility model;

[0019] Figure 2 An exploded view of a rear derailleur provided in an embodiment of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of section A;

[0021] Figure 4 This is a schematic diagram of the structure of the rotating shaft assembly provided in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the adjustment component provided in an embodiment of the present utility model.

[0023] Explanation of the markings in the image:

[0024] 10. Fixing component; 11. Arc-shaped sliding groove; 12. Fixing part; 13. Fixing body; 14. Fixing arm; 141. First through hole;

[0025] 20. Rotating shaft assembly; 21. Rotating shaft body; 22. Limiting part;

[0026] 30. Adjustment component; 31. Arc-shaped sliding part; 32. Adjustment body; 321. Second through hole;

[0027] 40. Limiting component; 41. Adjusting shaft;

[0028] 50. Derailleur body. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] 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.

[0031] 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 scope of 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.

[0032] 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.

[0033] Combination Figure 1 As shown, this utility model embodiment provides a bicycle rear derailleur, including: a fixing component 10, a rotating shaft component 20, an adjusting component 30, and a derailleur body 50. The fixing component 10 is disposed on the derailleur body 50, one end of the rotating shaft component 20 is connected to the fixing component 10, and the other end of the rotating shaft component 20 is rotatably connected to one end of the adjusting component 30.

[0034] Furthermore, the fixing component 10 is provided with an arc-shaped sliding groove 11, and the other end of the adjusting component 30 is provided with an arc-shaped sliding part 31, which is slidably connected to the arc-shaped sliding groove 11.

[0035] In this embodiment, the bicycle rear derailleur includes a fixing component 10, a pivot assembly 20, an adjusting component 30, and a derailleur body 50. The fixing component 10 is fixed to the derailleur body 50. One end of the pivot assembly 20 is connected to the fixing component 10, and the other end is rotatably connected to one end of the adjusting component 30 to achieve angle adjustment of the adjusting component 30 relative to the fixing component 10. An arc-shaped sliding groove 11 can be provided on the fixing component 10, with the arc-shaped sliding groove 11 arranged along a predetermined curvature trajectory to guide the rotational movement of the adjusting component 30. The other end of the adjusting component 30 is provided with an arc-shaped sliding part 31 that cooperates with the arc-shaped sliding groove 11. The arc-shaped sliding groove 11 engages with the side surface of the arc-shaped sliding part 31, and the arc-shaped sliding part 31 can slide within the arc-shaped sliding groove 11. Thus, under the guidance of the pivot assembly 20, the adjusting component 30 can be limited and adjusted around the pivot assembly 20. The arc-shaped sliding groove 11 can also support the adjustment component 30 when the rear derailleur is subjected to external impact, and disperse the force on the upper part of the fixing component 10 to prevent the fixing component 10 from breaking.

[0036] Through the above structural design, the adjusting component 30 can achieve controllable sliding along the arc path while maintaining connection with the fixed component 10, thereby achieving the purpose of adjusting the installation angle of the rear derailleur to adapt to the positioning requirements of different specifications or brands of freewheels and improve versatility and compatibility.

[0037] In one embodiment, a limiting component 40 is also included. The limiting component 40 is disposed on the fixing component 10, and one end of the limiting component 40 can abut against the side wall of the arc-shaped sliding part 31.

[0038] In this embodiment, the limiting component 40 is used to limit the rotation range of the adjusting component 30, thereby ensuring its stable operation within a predetermined angle range. The limiting component 40 is mounted on the fixed component 10, and one end of the limiting component 40 can abut against the side wall of the arc-shaped sliding portion 31 of the adjusting component 30. When the adjusting component 30 rotates along the sliding trajectory within the arc-shaped sliding groove 11, the limiting component 40 can limit its rotation angle by contacting the side wall of the arc-shaped sliding portion 31, preventing the adjusting component 30 from deviating from the design trajectory or from excessive rotation.

[0039] Combination Figure 2 and Figure 3 As shown, in one embodiment, the fixing component 10 includes a fixing part 12 disposed on the side of the arc-shaped sliding groove 11, and the limiting component 40 includes an adjusting shaft 41. One end of the adjusting shaft 41 is telescopically connected to the fixing part 12. By adjusting the telescopic length of the adjusting shaft 41, the other end of the adjusting shaft 41 abuts against the side wall of the arc-shaped sliding part 31.

[0040] In this embodiment, the fixing component 10 includes a fixing part 12 disposed on the side of the arc-shaped sliding groove 11, which is used to install the limiting component 40. The limiting component 40 includes an adjusting shaft 41, one end of which is telescopically connected to the fixing part 12, thereby realizing flexible adjustment of the length of the adjusting shaft 41. When the arc-shaped sliding part 31 of the adjusting component 30 is in different positions along the arc-shaped sliding groove 11, the other end of the adjusting shaft 41 can always abut against the side wall of the arc-shaped sliding part 31 by adjusting the telescopic length of the adjusting shaft 41, thereby effectively limiting the rotational position of the adjusting component 30.

[0041] In one embodiment, the adjusting shaft 41 and the fixing part 12 are threadedly connected.

[0042] In this embodiment, the threaded connection allows the adjusting shaft 41 to be controllably extended and retracted relative to the fixed part 12 along the axial direction. The user can rotate the adjusting shaft 41 to move it forward and backward on the fixed part 12, thereby adjusting the contact position between the other end of the adjusting shaft 41 and the side wall of the arc-shaped sliding part 31. This threaded connection method is not only simple in structure and convenient to adjust, but also has a good locking effect, effectively preventing the adjusting shaft 41 from loosening during use.

[0043] Combination Figure 4 As shown, in one embodiment, the fixing component 10 includes a fixing body 13 and a fixing arm 14 connected to the fixing body 13. The rotating shaft component 20 includes a rotating shaft body 21 and a limiting part 22 connected to one end of the rotating shaft body 21. A first through hole 141 is provided on the fixing arm 14. The other end of the rotating shaft body 21 passes through the first through hole 141 and is rotatably connected to the adjusting component 30. The limiting part 22 abuts against the fixing arm 14 from the side away from the adjusting component 30.

[0044] In this embodiment, the fixing assembly 10 includes a fixing body 13 and a fixing arm 14 connected to the fixing body 13. The rotating shaft assembly 20 can support the fixing arm 14. When installed on a bicycle frame, the rotating shaft assembly 20 is threadedly connected to the wheel axle of the bicycle's rear wheel. The rotating shaft assembly 20 includes a rotating shaft body 21 and a limiting part 22 disposed at one end of the rotating shaft body 21. The limiting part 22 is used to limit the axial degree of freedom of the fixing arm 14 (i.e., to prevent displacement). The fixing arm 14 has a first through hole 141. The other end of the rotating shaft body 21 passes through the first through hole 141 and is rotatably connected to the adjusting assembly 30, so that the adjusting assembly 30 can be angled around the rotating shaft body 21 (in actual adjustment, the adjusting assembly 30 is fixed, and the fixing arm 14 is rotated around the adjusting shaft 41 by rotating, that is, the fixing arm 14 rotates relative to the adjusting assembly 30). Meanwhile, the limiting part 22 is located on the side away from the adjusting component 30 and abuts against the outer surface of the fixing arm 14 to prevent the rotating shaft body 21 from coming off or loosening along the axial direction during use, thereby further enhancing the stability of the connection between the rotating shaft assembly 20 and the fixing component 10.

[0045] Combination Figure 5 As shown, in one embodiment, the adjustment component 30 includes an adjustment body 32, an arc-shaped sliding part 31 connected to one end of the adjustment body 32, a second through hole 321 opened at the other end of the adjustment body 32, and the other end of the rotating shaft body 21 rotatably connected to the second through hole 321.

[0046] In this embodiment, the adjustment assembly 30 includes an adjustment body 32, with an arc-shaped sliding part 31 disposed at one end of the adjustment body 32 and fixedly connected to it, for use in conjunction with the arc-shaped sliding groove 11 on the fixing assembly 10 to achieve sliding adjustment. A second through hole 321 is provided at the other end of the adjustment body 32, and the other end of the rotating shaft body 21 passes through the second through hole 321 and is rotatably connected to it. Through this structural design, the adjustment body 32 remains fixed, while the fixing arm 14 rotates to adjust the rotation angle of the derailleur body 50, thereby achieving adjustment of the rear derailleur installation angle and improving the overall structural adaptability and operational convenience.

[0047] In one embodiment, the other end of the shaft body 21 is threadedly connected to the second through hole 321.

[0048] In this embodiment, the rotating shaft body 21 is securely mounted on the adjusting body 32 through a threaded connection, while also providing a certain axial locking function. When the rotating shaft body 21 is screwed into the second through hole 321, it can be connected to the adjusting component 30, and it can also prevent it from loosening or falling off due to vibration or external force during use, thereby ensuring the stability of the adjusting component 30 in actual use.

[0049] In one embodiment, the arc-shaped sliding groove 11 and the fixed arm 14 are distributed on opposite sides of the fixed body 13.

[0050] In this embodiment, the fixing body 13 serves as the main structural base of the fixing component 10. One side of the fixing body 13 is provided with an arc-shaped sliding groove 11 for guiding the sliding of the adjustment component 30, while the other side extends to form a fixing arm 14 for mounting the rotating shaft component 20. This structural layout ensures that the arc-shaped sliding groove 11 and the fixing arm 14 are distributed opposite to each other on the fixing body 13, which is beneficial for the overall structural mechanical balance and space utilization, and also facilitates the assembly and collaborative work of the various components.

[0051] This utility model embodiment also provides a bicycle, including the rear derailleur as described above.

[0052] Furthermore, it also includes a frame and a freewheel, with the bicycle rear derailleur and freewheel both mounted on the frame, and the adjustment assembly 30 located on the side of the frame facing the freewheel.

[0053] In this embodiment, by employing an adjustable rear derailleur on the bicycle, the rear derailleur can be finely adjusted in angle according to different frame structures and freewheel positions, thereby ensuring the accuracy and stability of the derailleur system. The bicycle rear derailleur includes a fixing component 10, a pivot assembly 20, an adjusting component 30, a limiting component 40, and a derailleur body 50. The fixing component 10 serves as the B-joint of the bicycle rear derailleur, or the fixing component 10 is located on the B-joint. The B-joint is a bent joint (referred to as a B-joint), meaning that the joint axis is perpendicular to the axes of the front and rear connecting parts. Due to structural interference, this type of B-joint has a small rotation angle, greatly limiting the directional angle. When installing the bicycle rear derailleur, the adjusting component 30 is located inside the frame, that is, on the side of the frame closer to the freewheel or hub. This bicycle not only improves the overall assembly compatibility and maintenance convenience but also effectively enhances the impact resistance and service life of the rear derailleur during riding, possessing good practical value and promising prospects for promotion.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model 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 this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bicycle rear derailleur, characterized in that, include: The derailleur body comprises a fixing component, a pivot assembly, and an adjustment component. The fixing component is disposed on the derailleur body. One end of the pivot assembly is connected to the fixing component, and the other end of the pivot assembly is rotatably connected to one end of the adjustment component.

2. The bicycle rear derailleur according to claim 1, characterized in that, The fixing component has an arc-shaped sliding groove, and the other end of the adjusting component has an arc-shaped sliding part, which is slidably connected to the arc-shaped sliding groove.

3. The bicycle rear derailleur according to claim 2, characterized in that, It also includes a limiting component, which is disposed on the fixing component, and one end of the limiting component can abut against the side wall of the arc-shaped sliding part.

4. The bicycle rear derailleur according to claim 3, characterized in that, The fixing component includes a fixing part disposed on the side of the arc-shaped sliding groove, and the limiting component includes an adjusting shaft. One end of the adjusting shaft is telescopically connected to the fixing part. By adjusting the telescopic length of the adjusting shaft, the other end of the adjusting shaft abuts against the side wall of the arc-shaped sliding part.

5. The bicycle rear derailleur according to claim 4, characterized in that, The adjusting shaft and the fixing part are connected by a thread.

6. The bicycle rear derailleur according to claim 2, characterized in that, The fixing component includes a fixing body and a fixing arm connected to the fixing body. The rotating shaft assembly includes a rotating shaft body and a limiting part connected to one end of the rotating shaft body. The fixing arm has a first through hole. The other end of the rotating shaft body passes through the first through hole and is rotatably connected to the adjusting component. The limiting part abuts against the fixing arm from the side away from the adjusting component.

7. The bicycle rear derailleur according to claim 6, characterized in that, The adjustment assembly includes an adjustment body, the arc-shaped sliding part is connected to one end of the adjustment body, the other end of the adjustment body is provided with a second through hole, and the other end of the rotating shaft body is rotatably connected to the second through hole.

8. The bicycle rear derailleur according to claim 7, characterized in that, The other end of the shaft body is threadedly connected to the second through hole.

9. The bicycle rear derailleur according to claim 6, characterized in that, The arc-shaped sliding groove and the fixed arm are distributed on opposite sides of the fixed body.

10. A bicycle, characterized in that, Includes the bicycle rear derailleur as described in any one of claims 1-9.

11. The bicycle according to claim 10, characterized in that, It also includes a frame and a freewheel, both of which are mounted on the frame, and the adjustment assembly is located on the side of the frame facing the freewheel.

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