Rear derailleur of bicycle

Abstract

The utility model relates to a bicycle rear derailleur which comprises a rear derailleur body, a first connecting block and a second connecting block, a mounting mechanism is arranged outside the second connecting block, a connecting assembly is arranged inside the first connecting block, the mounting mechanism comprises a connecting seat fixedly connected with the second connecting block, and the connecting seat is provided with a connecting rod. A connecting frame is movably installed outside the connecting base, and two through holes are formed in the connecting frame. According to the rear derailleur of the bicycle, by arranging the mounting mechanism, the rear derailleur of the bicycle is conveniently connected with a control assembly on the bicycle, a user can conveniently mount and dismount the rear derailleur of the bicycle, the practicability of the rear derailleur is improved, and the problem that in the mounting and using process of the rear derailleur, the rear derailleur cannot be damaged is solved. The problems that the rear derailleur of the bicycle is inconvenient to connect with a control assembly on the bicycle, a user cannot control and adjust the rear derailleur of the bicycle conveniently, meanwhile, the rear derailleur is inconvenient to disassemble and maintain, and the practicability of the rear derailleur of the bicycle is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a bicycle rear transmission. Background Art

[0002] The rear derailleur is installed at the rear wheel of the bicycle. A set of speed gears of different specifications is coaxially passed through the rear wheel. When the bicycle is moving, the chain can be placed on different speed gears through the gear shifting, thereby changing the speed to adapt to different road conditions and the physical strength of the rider.

[0003] Please refer to announcement number CN218022045U, a rear transmission used for a bicycle, comprising: a mounting seat, the mounting seat is provided with a first inclined structure extending outwardly; a swinging member, the swinging member is provided with a second inclined structure extending outwardly, the second inclined structure has the same inclination angle as the first inclined structure; a gear is rotatably connected to the swinging member; a linkage member, one end of the linkage member is hinged to the first inclined structure, and the other end is connected to the second inclined structure; wherein the swinging member can reciprocate along the inclination direction of the second inclined structure when swinging, and the gear that originally moves in the horizontal direction is changed to move in the inclined direction through the first inclined structure and the second inclined structure. Within a unit length, the movable distance in the inclined direction is larger, thereby increasing the speed of the rear transmission of the bicycle.

[0004] However, in this patent, during the installation and use of the rear derailleur, it is inconvenient to connect the rear derailleur with the control assembly on the bicycle, and it is inconvenient for the user to control and adjust the rear derailleur of the bicycle. At the same time, it is inconvenient to disassemble and repair the rear derailleur, which affects the practicality of the rear derailleur of the bicycle. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a bicycle rear derailleur which has the advantages of being easy to disassemble and assemble, control and maintain, and solves the problems of being inconvenient to connect the rear derailleur to a control assembly on a bicycle, being inconvenient for a user to control and adjust the bicycle rear derailleur, and being inconvenient to disassemble and maintain the rear derailleur, which affects the practicality of the bicycle rear derailleur, during the installation and use of the rear derailleur.

[0006] To achieve the above object, the utility model provides the following technical solution: a bicycle rear derailleur, comprising a rear derailleur body, a first connecting block and a second connecting block, wherein the second connecting block is provided with a mounting mechanism on the outside, and the first connecting block is provided with a connecting assembly on the inside;

[0007] The mounting mechanism includes a connecting seat fixedly connected to the second connecting block, a connecting frame movably mounted on the outside of the connecting seat, two through holes are opened inside the connecting frame, a connecting rod passing through the connecting seat is sleeved inside the two through holes, a threaded limiting rod passing through the connecting rod is threadedly connected to the inside of the connecting frame, and a control line is fixedly connected to the side of the connecting frame away from the connecting seat.

[0008] Furthermore, a connecting hole is provided inside the connecting seat, and the connecting rod passes through the connecting seat through the connecting hole.

[0009] Furthermore, the connecting frame is U-shaped, and the size of the connecting frame is compatible with the connecting seat.

[0010] Furthermore, a limiting hole is provided inside the connecting rod, and the threaded limiting rod passes through the connecting rod through the limiting hole.

[0011] Furthermore, a threaded hole is provided inside the connecting frame, and the threaded limiting rod is threadedly connected to the connecting frame through the threaded hole.

[0012] Furthermore, a protective sleeve is sleeved on the outside of the control line, and the other end of the control line is fixedly connected to the bicycle control component.

[0013] Furthermore, the connecting assembly includes a telescopic rod fixedly connected to the first connecting block, a telescopic spring is sleeved on the outside of the telescopic rod, and a telescopic end of the telescopic rod is fixedly connected to a fixing seat.

[0014] Furthermore, a mounting groove is provided inside the first connecting block, and the telescopic rod is located inside the mounting groove.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The bicycle rear derailleur is convenient for connecting the bicycle rear derailleur with a control assembly on a bicycle by providing a mounting mechanism, and is convenient for users to install and disassemble the bicycle rear derailleur, thereby improving the practicality of the rear derailleur and solving the problems of inconvenience in connecting the rear derailleur with a control assembly on a bicycle, inconvenience in controlling and adjusting the bicycle rear derailleur by users, and inconvenience in disassembling and repairing the rear derailleur, which affects the practicality of the bicycle rear derailleur, during the installation and use of the rear derailleur.

[0017] 2. The bicycle rear derailleur is provided with a connection assembly, which is convenient for users to adjust and install and disassemble the bicycle rear derailleur. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the structure of the utility model;

[0019] Figure 2 It is a partial structural sectional view of the utility model;

[0020] Figure 3 This is a three-dimensional diagram of the connecting frame structure of the utility model.

[0021] In the figure: 1. rear derailleur body; 2. first connecting block; 201. telescopic rod; 202. telescopic spring; 203. fixing seat; 3. second connecting block; 4. connecting seat; 5. connecting frame; 501. through hole; 502. threaded hole; 6. connecting rod; 601. limiting hole; 7. threaded limiting rod; 8. control line. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 A bicycle rear derailleur in this embodiment includes a rear derailleur body 1, a first connecting block 2 and a second connecting block 3, a mounting mechanism is arranged outside the second connecting block 3, and a connecting assembly is arranged inside the first connecting block 2.

[0024] Embodiment 1: The mounting mechanism includes a connecting seat 4 fixedly connected to the second connecting block 3, and a connecting frame 5 is movably mounted on the outside of the connecting seat 4. The connecting frame 5 is U-shaped, and the size of the connecting frame 5 is adapted to the connecting seat 4, so that the connecting frame 5 can be installed on the outside of the connecting seat 4, the connecting frame 5 can be connected to the connecting seat 4, and the installation of the rear transmission body 1 can be facilitated. The interior of the connecting frame 5 is provided with two through holes 501, and the interiors of the two through holes 501 are sleeved with connecting rods 6 that penetrate the connecting seat 4. The interior of the connecting seat 4 is provided with connecting holes, and the connecting rod 6 penetrates the connecting seat 4 through the connecting holes. The connecting seat 4 is connected to the connecting frame 5 by penetrating the connecting seat 4 through the connecting rod 6, so as to facilitate the installation and use of the rear transmission body 1 and the disassembly and maintenance of the rear transmission body 1.

[0025] Among them, the internal thread connection of the connecting frame 5 is connected with a threaded limiting rod 7 that passes through the connecting rod 6. A limiting hole 601 is provided inside the connecting rod 6. The threaded limiting rod 7 passes through the connecting rod 6 through the limiting hole 601 to limit and fix the connecting rod 6, which is convenient for the installation and connection of the connecting frame 5 and the connecting seat 4 and reduces the falling off of the connecting rod 6 and the connecting frame 5. A threaded hole 502 is provided inside the connecting frame 5. The threaded limiting rod 7 is threadedly connected to the connecting frame 5 through the threaded hole 502 to limit and fix the connecting rod 6, which is convenient for the user to loosen the threaded limiting rod 7 and remove the connecting rod 6 and the connecting frame 5 from the connecting seat 4, so as to facilitate the user to disassemble and repair the rear transmission body 1.

[0026] Among them, a control line 8 is fixedly connected to one side of the connecting frame 5 away from the connecting seat 4, a protective cover is sleeved on the outside of the control line 8, and the other end of the control line 8 is fixedly connected to the bicycle control component. The user pulls the control line 8 through the control component on the bicycle to drive the connecting frame 5, the connecting rod 6, the second connecting block 3 and the second connecting block 3, thereby adjusting the speed of the rear transmission body 1.

[0027] It should be noted that, by providing a mounting mechanism, the connection between the rear derailleur of a bicycle and the control assembly on the bicycle is facilitated, and the installation and removal of the rear derailleur of the bicycle by the user is facilitated, thereby improving the practicability of the rear derailleur and solving the problems of the inconvenience in connecting the rear derailleur and the control assembly on the bicycle during the installation and use of the rear derailleur, the inconvenience in the user controlling and adjusting the rear derailleur of the bicycle, and the inconvenience in disassembling and repairing the rear derailleur, which affects the practicability of the rear derailleur of the bicycle.

[0028] Specifically, when installing and disassembling the rear transmission of the bicycle, the other end of the control line 8 is fixedly connected to the control assembly on the bicycle, then, the connection frame 5 is aligned with the connection seat 4, and the connecting rod 6 is sleeved with the connection frame 5 and the connection seat 4, and finally, the threaded limiting rod 7 is tightened, and the threaded limiting rod 7 passes through the connecting rod 6 to limit the connecting rod 6, which is convenient for controlling and adjusting the rear transmission of the bicycle. When the rear transmission needs to be repaired, the user loosens the threaded limiting rod 7, removes the connecting rod 6 and the connection frame 5, which is convenient for disassembly and repair of the rear transmission of the bicycle, thereby achieving the purpose of facilitating the installation and disassembly of the rear transmission of the bicycle and facilitating the user to repair the rear transmission of the bicycle.

[0029] Example 2: Please refer to Figure 2The connecting assembly includes a telescopic rod 201 fixedly connected to the first connecting block 2, a telescopic spring 202 is sleeved on the outside of the telescopic rod 201, and a fixing seat 203 is fixedly connected to the telescopic end of the telescopic rod 201. A mounting groove is provided inside the first connecting block 2, and the telescopic rod 201 is located inside the mounting groove, which is convenient for the installation and fixation of the telescopic rod 201. The second connecting block 3 is fixedly connected to the fixing seat 203. The user presses the second connecting block 3 to drive the fixing seat 203 to move, so that the fixing seat 203 squeezes the telescopic rod 201 and the telescopic spring 202, and adjusts the distance between the second connecting block 3 and the first connecting block 2, so as to facilitate the installation and fixation of the rear transmission body 1.

[0030] It should be noted that by providing the connection assembly, it is convenient for the user to make adjustments and to install and remove the rear derailleur of the bicycle.

[0031] Specifically, when installing or removing the rear derailleur of a bicycle, the user presses the second connecting block 3 to drive the fixing seat 203 to move, so that the fixing seat 203 squeezes the telescopic rod 201 and the telescopic spring 202, and adjusts the distance between the second connecting block 3 and the first connecting block 2, thereby facilitating the installation and fixation of the rear derailleur body 1.

[0032] The working principle of the above embodiment is:

[0033] (1) When installing and disassembling the bicycle rear derailleur, the other end of the control line 8 is fixedly connected to the control assembly on the bicycle, then the connecting frame 5 is aligned with the connecting seat 4, and the connecting rod 6 is sleeved with the connecting frame 5 and the connecting seat 4. Finally, the threaded limiting rod 7 is tightened and passed through the connecting rod 6 to limit the connecting rod 6, which is convenient for controlling and adjusting the bicycle rear derailleur. When the rear derailleur needs to be repaired, the user loosens the threaded limiting rod 7 and removes the connecting rod 6 and the connecting frame 5, which is convenient for disassembling and repairing the bicycle rear derailleur, thereby achieving the purpose of facilitating the installation and disassembly of the bicycle rear derailleur and facilitating the user to repair the bicycle rear derailleur.

[0034] (2) When installing or removing the bicycle rear derailleur, the user presses the second connecting block 3 to drive the fixing seat 203 to move, so that the fixing seat 203 squeezes the telescopic rod 201 and the telescopic spring 202, and adjusts the distance between the second connecting block 3 and the first connecting block 2, thereby facilitating the installation and fixing of the rear derailleur body 1.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle rear derailleur, comprising a rear derailleur body (1), a first connecting block (2) and a second connecting block (3), characterized in that: The second connection block (3) is provided with a mounting mechanism on the outside, and the first connection block (2) is provided with a connection component on the inside; The mounting mechanism comprises a connecting seat (4) fixedly connected to the second connecting block (3); a connecting frame (5) is movably mounted on the outside of the connecting seat (4); two through holes (501) are provided inside the connecting frame (5); connecting rods (6) passing through the connecting seat (4) are sleeved inside the two through holes (501); a threaded limiting rod (7) passing through the connecting rod (6) is threadedly connected inside the connecting frame (5); and a control line (8) is fixedly connected to a side of the connecting frame (5) away from the connecting seat (4).

2. A bicycle rear derailleur according to claim 1, characterized in that: A connecting hole is provided inside the connecting seat (4), and the connecting rod (6) passes through the connecting hole and penetrates the connecting seat (4).

3. A bicycle rear derailleur according to claim 1, characterized in that: The connecting frame (5) is U-shaped, and the size of the connecting frame (5) is compatible with the connecting seat (4).

4. A bicycle rear derailleur according to claim 1, characterized in that: A limiting hole (601) is provided inside the connecting rod (6), and the threaded limiting rod (7) passes through the limiting hole (601) and penetrates the connecting rod (6).

5. A bicycle rear derailleur according to claim 1, characterized in that: A threaded hole (502) is provided inside the connecting frame (5), and the threaded limiting rod (7) is threadedly connected to the connecting frame (5) through the threaded hole (502).

6. A bicycle rear derailleur according to claim 1, characterized in that: The outside of the control line (8) is sheathed with a protective sheath, and the other end of the control line (8) is fixedly connected to a bicycle control component.

7. A bicycle rear derailleur according to claim 1, characterized in that: The connection assembly comprises a telescopic rod (201) fixedly connected to the first connection block (2), a telescopic spring (202) is sleeved on the outside of the telescopic rod (201), and a telescopic end of the telescopic rod (201) is fixedly connected to a fixing seat (203).

8. A bicycle rear derailleur according to claim 7, characterized in that: A mounting groove is provided inside the first connecting block (2), and the telescopic rod (201) is located inside the mounting groove.

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