Derailleur with fine adjustment function and bicycle with derailleur

Abstract

The utility model relates to a derailleur with a fine tuning function, which comprises a front derailleur main body, a derailleur support assembly, an outer connecting piece and a fine tuning connecting piece, a first end of the front derailleur main body is rotatably connected with a first end of the derailleur support assembly, a second end of the front derailleur main body is rotatably connected with a first end of the outer connecting piece, and a second end of the front derailleur main body is rotatably connected with a second end of the fine tuning connecting piece. The fine adjustment connecting piece is rotationally connected with the second end of the outer connecting piece, the third end of the outer connecting piece is rotationally connected with the second end of the shifting chain support assembly, the fine adjustment connecting piece is provided with a first limiting part, the outer connecting piece is provided with a fine adjustment screw, and the fine adjustment screw corresponds to the first limiting part. The fine adjustment connecting piece is provided with a first fixing piece used for being connected with the speed change cable, and the end of the speed change cable rotates along with the fine adjustment connecting piece. According to the derailleur with the fine adjustment function, the derailleur has the fine adjustment function, and a user is allowed to adjust the tension degree of the speed change cable according to needs so as to achieve more accurate speed change.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle derailleurs, in particular to a derailleur with a fine-tuning function and a bicycle thereof. Background Art

[0002] Traditional bicycle derailleur designs typically include basic chain guide and shifting functions. These derailleurs may not adapt to varying riding conditions or the needs of individual riders, resulting in inaccurate shifting or a loose fit between the chain and the chainrings, which connect to the bicycle's rear wheel's central axis. Prior art bicycle derailleurs typically lack fine-tuning capabilities, which can lead to inaccurate shifting and a loose fit between the chain and chainrings, compromising the riding experience and shifting efficiency. Utility Model Content

[0003] The utility model provides a derailleur with a fine-tuning function and a bicycle thereof, aiming to at least solve one of the technical problems existing in the prior art.

[0004] The technical solution of the present utility model is a derailleur with a fine-tuning function, which includes: a front derailleur body, a derailleur bracket assembly, an external connecting piece and a fine-tuning connecting piece, wherein the first end of the front derailleur body is rotatably connected to the first end of the derailleur bracket assembly, the second end of the front derailleur body is rotatably connected to the first end of the external connecting piece, the fine-tuning connecting piece is rotatably connected to the second end of the external connecting piece, the third end of the external connecting piece is rotatably connected to the second end of the derailleur bracket assembly, a first limiting portion is provided on the fine-tuning connecting piece, a fine-tuning screw is provided on the external connecting piece, the fine-tuning screw is arranged corresponding to the first limiting portion, and a first fixing piece for connecting a speed change cable is provided on the fine-tuning connecting piece to allow the end of the speed change cable to rotate with the fine-tuning connecting piece when the fine-tuning screw is adjusted and rotated corresponding to the first limiting portion.

[0005] Furthermore, the first fixing member is a first screw, and a first mounting hole is provided on the fine-tuning connecting member. The first screw cooperates with the first mounting hole through a first stud to press the end of the shift cable.

[0006] Furthermore, the derailleur bracket assembly includes a derailleur bracket and an inner connecting member, the first end of the derailleur bracket is rotatably connected to the first end of the inner connecting member, the second end of the derailleur bracket is rotatably connected to the third end of the outer connecting member, and the second end of the inner connecting member is rotatably connected to the first end of the front derailleur body.

[0007] Furthermore, a channel for passing a bicycle transmission chain is formed at one end of the derailleur bracket away from the inner connecting member.

[0008] Furthermore, a second limiting portion is provided on the external connecting member, the position of the second limiting portion corresponds to the first limiting portion, the second limiting portion is threadedly connected to the fine-tuning screw to allow the end of the second limiting portion to contact the first limiting portion, and the nut of the fine-tuning screw is located on the outside of the external connecting member.

[0009] Furthermore, a first flat washer is pressed between the first screw and the shift cable.

[0010] Furthermore, the derailleur bracket assembly includes a reset spring, and the derailleur bracket is rotatably connected to the inner connecting member through a first rivet sleeve on the reset spring, and two ends of the reset spring are respectively limited by the derailleur bracket and the inner connecting member.

[0011] A bicycle is characterized by comprising: a bicycle body and the above-mentioned derailleur with fine-tuning function, wherein the derailleur with fine-tuning function is mounted on the bicycle body.

[0012] The beneficial effects of the utility model include:

[0013] 1. The derailleur has a fine-tuning function that allows the user to adjust the tension of the shift cable as needed to achieve more precise shifting. The fine-tuning function can ensure a good fit between the chain and the chainring, improving the smoothness and accuracy of the shifting.

[0014] 2. By setting up the fine-tuning connector, external connector and derailleur bracket assembly, a compact and effective structure is achieved, which is easy to install and use; the design of the fine-tuning screw allows the operator to make fine adjustments with simple tools such as a hexagonal screwdriver, improving the convenience of operation.

[0015] In addition, additional aspects and advantages of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 3 is a first angle detailed schematic diagram of a derailleur with a fine-tuning function according to an embodiment of the present invention.

[0017] Figure 2 2 is a detailed schematic diagram of a derailleur with a fine-tuning function according to an embodiment of the present invention from a second angle.

[0018] Figure 3 3 is a detailed schematic diagram of a derailleur with a fine-tuning function according to an embodiment of the present invention from a third angle.

[0019] Figure 4 2 is a schematic diagram of exploded details of a derailleur with a fine-tuning function according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0021] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are merely relative to the relative positions of the components of the utility model in the accompanying drawings.

[0022] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0023] It should be understood that although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element without departing from the scope of the present disclosure.

[0024] Reference Figures 1 to 4 In some embodiments, the present invention discloses a derailleur with a fine-tuning function, comprising:

[0025] Reference Figures 1 to 4 The front derailleur body 6, the derailleur bracket assembly 30, the outer connecting member 10 and the fine-tuning connecting member 1 are combined with the bicycle body, and the front derailleur body 6 is fixedly connected to the bicycle frame.

[0026] Continue to refer to Figures 1 to 4 As shown, the first end of the front derailleur body 6 is rotatably connected to the first end of the derailleur support assembly 30. Figure 4 As can be seen in the figure, the first end of the front derailleur body 6 is rotatably connected to the first end of the derailleur support assembly 30 through a pin component. Of course, a connecting member with the same function as the pin component can also be used for assembly. The second end of the front derailleur body 6 is rotatably connected to the first end of the outer connecting member 10. Figure 4As shown, the second end of the front derailleur body 6 is rotatably connected to the first end of the external connector 10 via a pin assembly. Alternatively, a connector having the same function as the pin assembly can be used for assembly. The fine-tuning connector 1 is rotatably connected to the second end of the external connector 10. The third end of the external connector 10 is rotatably connected to the second end of the derailleur support assembly 30. The third end of the external connector 10 is rotatably connected to the second end of the derailleur support assembly 30 via a rivet assembly.

[0027] Continue to refer to Figures 1 to 3 As shown, the fine-tuning connector 1 is provided with a first limiting portion 101, the outer connector 10 is provided with a fine-tuning screw 12, the fine-tuning screw 12 is arranged corresponding to the first limiting portion 101, and the fine-tuning connector 1 is provided with a first fixing member for connecting the shift cable 18, so that when the fine-tuning screw 12 is adjusted and rotated corresponding to the first limiting portion 101, the end of the shift cable 18 rotates with the fine-tuning connector 1. Specifically, the first fixing member is a first screw 3, and a first mounting hole is provided on the fine-tuning connector 1. The first screw 3 cooperates with the first mounting hole through a first stud to press the end of the shift cable 18. Figure 1 As shown, when the operator turns the fine-tuning screw 12 clockwise, the fine-tuning screw 12 will move forward and press against the fine-tuning connector 1 to rotate clockwise. At the same time, the speed cable 18 will follow the fine-tuning connector 1 to rotate clockwise, so that the speed cable 18 is tightened, so that the outer connector 10 drives the derailleur bracket assembly 30 to move to the outside; conversely, when the fine-tuning screw 12 is turned counterclockwise, the fine-tuning screw 12 will move backward, the fine-tuning connector 1 and the speed cable 18 will rotate counterclockwise, so that the speed cable 18 is loosened, so that the outer connector 10 drives the derailleur bracket assembly 30 to move to the inside, completing the fine-tuning action.

[0028] The fine-tuning connection 1 on the derailleur is located at the top of the entire device, specifically, referring to Figures 1 to 3 As shown, the outer connecting member 10 is provided with a second limiting portion 102, the position of the second limiting portion 102 corresponding to the first limiting portion 101. The second limiting portion 102 is threadedly connected to the fine-tuning screw 12 to allow the end of the second limiting portion 102 to contact the first limiting portion 101. The nut of the fine-tuning screw 12 is located outside the outer connecting member 10. This allows the operator to easily fine-tune the fine-tuning screw nut located on the periphery using a hexagonal screwdriver without being blocked by other components.

[0029] Continue to refer to Figures 1 to 4As shown, the derailleur bracket assembly 30 includes a derailleur bracket 17 and an inner connector 8. The first end of the derailleur bracket 17 is rotatably connected to the first end of the inner connector 8, the second end of the derailleur bracket 17 is rotatably connected to the third end of the outer connector 10, and the second end of the inner connector 8 is rotatably connected to the first end of the front derailleur body 6. The above-mentioned end connections can also be connected using pins or other flexible adjustment components. An inner connector 8 is further provided between the derailleur bracket 17 and the front derailleur body 6, allowing the derailleur bracket 17 to rotate around the front derailleur body 6 with a greater range. The end of the derailleur bracket 17 away from the inner connector 8 is provided with a channel for receiving the bicycle transmission chain. This channel helps drive the bicycle transmission chain to swing more widely, making the bicycle gear shifting operation more flexible.

[0030] Continue to refer to Figures 1 to 4 As shown, a first flat washer 2 is pressed between the first screw 3 and the shift cable 18, so that the shift cable 18 can be pressed more firmly on the fine-tuning connector 1 without loosening.

[0031] Continue to refer to Figures 1 to 4 As shown, the derailleur support assembly 30 includes a return spring 19, and the derailleur support 17 is rotatably connected to the inner connector 8 via a first rivet sleeved with the return spring 19. The two ends of the return spring 19 are respectively limited by the derailleur support 17 and the inner connector 8. Figure 1 As described above, when the first limiting portion 101 contacts the second limiting portion 102, the reset spring 19 is in a reset state, causing the chain bracket 17 and the inner connecting member 8 to return to a reset state. When the first limiting portion 101 does not contact the second limiting portion 102, that is, the fine-tuning screw 12 is in an adjustment support for the fine-tuning connecting member 1, the reset spring 19 is in a compressed state, respectively in a state of abutment against the chain bracket 17 and the inner connecting member 8.

[0032] The utility model also discloses a bicycle, which comprises: a bicycle body and the derailleur with the fine-tuning function as described above, wherein the derailleur with the fine-tuning function is installed on the bicycle body.

[0033] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may be modified and varied in various ways.

Claims

1. A derailleur with a fine-tuning function, characterized in that: include: Front derailleur body (6), derailleur support assembly (30), external connecting member (10) and fine-tuning connecting member (1), The first end of the front derailleur body (6) is rotatably connected to the first end of the derailleur support assembly (30), the second end of the front derailleur body (6) is rotatably connected to the first end of the outer connecting member (10), the fine-tuning connecting member (1) is rotatably connected to the second end of the outer connecting member (10), and the third end of the outer connecting member (10) is rotatably connected to the second end of the derailleur support assembly (30). The fine-tuning connecting member (1) is provided with a first limiting portion (101), the outer connecting member (10) is provided with a fine-tuning screw (12), the fine-tuning screw (12) is arranged corresponding to the first limiting portion (101), and the fine-tuning connecting member (1) is provided with a first fixing member for connecting the speed change cable (18), so that when the fine-tuning screw (12) is adjusted and rotated corresponding to the first limiting portion (101), the end of the speed change cable (18) rotates along with the fine-tuning connecting member (1).

2. The derailleur with fine-tuning function according to claim 1, characterized in that: The first fixing member is a first screw (3), a first mounting hole is provided on the fine-tuning connecting member (1), and the first screw (3) cooperates with the first mounting hole through a first stud to press the end of the speed change cable (18).

3. The derailleur with fine-tuning function according to claim 1, characterized in that: The derailleur support assembly (30) comprises a derailleur support (17) and an inner connecting member (8), wherein the first end of the derailleur support (17) is rotatably connected to the first end of the inner connecting member (8), the second end of the derailleur support (17) is rotatably connected to the third end of the outer connecting member (10), and the second end of the inner connecting member (8) is rotatably connected to the first end of the front derailleur body (6).

4. The derailleur with fine-tuning function according to claim 3, characterized in that: One end of the chain derailleur bracket (17) away from the inner connecting member (8) is provided with a passage for passing through the bicycle transmission chain.

5. The derailleur with fine-tuning function according to claim 1, characterized in that: The outer connecting member (10) is provided with a second limiting portion (102), the position of the second limiting portion (102) corresponds to the first limiting portion (101), the second limiting portion (102) is threadedly connected to the fine-tuning screw (12) to allow the end of the second limiting portion (102) to contact the first limiting portion (101), and the nut of the fine-tuning screw (12) is located outside the outer connecting member (10).

6. The derailleur with fine-tuning function according to claim 2, characterized in that: A first flat washer (2) is pressed between the first screw (3) and the speed change cable (18).

7. The derailleur with fine-tuning function according to claim 3, characterized in that: The derailleur support assembly (30) includes a reset spring (19), and the derailleur support (17) is rotatably connected to the inner connecting member (8) through a first rivet sleeve on the reset spring (19), and the two ends of the reset spring (19) are respectively limited by the corresponding positions of the derailleur support (17) and the inner connecting member (8).

8. A bicycle, characterized in that: include: A bicycle body and a derailleur with fine-adjustment function according to any one of claims 1 to 7, wherein the derailleur with fine-adjustment function is mounted on the bicycle body.

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