A connection structure of a rear derailleur and a frame

Abstract

The utility model discloses a kind of connecting structure of rear derailleur and frame, including frame and rear derailleur, the first rear fork end and the second rear fork end of frame are respectively equipped with corresponding first through hole and second through hole, and first through hole and second through hole are connected with the through shaft between;Further include: connecting assembly, it includes first connecting part and second connecting part;Tail hook assembly, it includes first mounting part and second mounting part;First connecting part and first mounting part are connected on the first rear fork end by first fixed part;Rear derailleur includes base member, and base member is equipped with connecting cavity;Connecting cavity includes connecting socket, second connecting part is inserted in connecting socket, and second connecting part and second mounting part are connected with connecting cavity by second fixed part.The connecting structure of rear derailleur and frame of the utility model can realize the effective connection of rear derailleur and frame stable and reliable, high safety, can guarantee the speed change effect of rear derailleur stable and effective.

Description

Technical Field

[0001] This utility model relates to the field of rear derailleur connection technology, and more specifically to a connection structure between a rear derailleur and a bicycle frame. Background Technology

[0002] A bicycle derailleur typically includes a shift lever or shifter grip mounted on the handlebars, a front derailleur mounted near the bottom bracket, and a rear derailleur mounted near the rear wheel axle. The rear derailleur usually includes a base component, a movable component, and a chain guide. The movable component is movably connected to the base component via a linkage mechanism. Under the action of a control cable on the shift lever, the chain guide moves laterally relative to the base component to achieve gear shifting.

[0003] Currently, rear derailleurs are mainly connected to the bicycle frame via tail hooks. However, this connection is often not secure, which can easily damage the derailleur, resulting in low safety and failing to guarantee stable gear shifting. Utility Model Content

[0004] The purpose of this utility model is to provide a connection structure between the rear derailleur and the frame, which can achieve a stable and reliable connection between the rear derailleur and the frame, with high safety and can ensure a stable and effective shifting effect of the rear derailleur.

[0005] Therefore, this utility model provides a connection structure between a rear derailleur and a frame, including a frame and a rear derailleur. The frame has corresponding first and second through holes on its first and second rear fork ends, respectively, and a through shaft connects the first and second through holes. It also includes: a connecting assembly comprising a first connecting portion and a second connecting portion; and a tail hook assembly comprising a first mounting portion and a second mounting portion. Both the first connecting portion and the first mounting portion are connected to the first rear fork end via a first fixing member. The rear derailleur includes a base component with a connecting cavity. The connecting cavity includes a connecting socket, into which the second connecting portion is inserted. Both the second connecting portion and the second mounting portion are connected to the connecting cavity via a second fixing member. Alternatively, the second mounting portion is connected to an adapter, and both the adapter assembly and the second connecting portion are connected to the connecting cavity via a third fixing member.

[0006] Preferably, the first mounting portion corresponds to the inner side of the first through hole and is sleeved on the through shaft, and the first connecting portion corresponds to the outer side of the first through hole; the first fixing member passes through and connects the first connecting portion and the first mounting portion, and is sleeved on the through shaft.

[0007] Preferably, the first fixing member includes an internal thread groove, and the through shaft is provided with an external thread that mates with the internal thread groove.

[0008] Preferably, the second mounting portion corresponds to the connecting cavity, the second fixing member passes through and connects the second connecting portion, the connecting cavity and the second mounting portion, and the second fixing member is threadedly connected to the second mounting portion.

[0009] Preferably, the second fixing member is clearance-fitted within the connecting cavity, allowing the rear derailleur to rotate along the second fixing member.

[0010] Preferably, an adjusting pad is provided between the connecting cavity and the second mounting part, and the base component is provided with a rotatable adjusting bolt, which can be rotated to abut against the adjusting pad; the rotation of the rear derailleur can be driven by the abutment of the adjusting bolt against the abutment part.

[0011] Preferably, one end of the adapter is provided with a first adapter hole, and a bolt is used to connect the first adapter hole and the second mounting part through the bolt.

[0012] Preferably, the other end of the adapter is provided with a second adapter hole, the second adapter hole and the second connecting hole are respectively corresponding to the two ends of the connecting cavity and are connected through the third fixing member.

[0013] Preferably, the third fixing member is fitted with a clearance within the connecting cavity, and the rear derailleur can rotate along the third fixing member.

[0014] Preferably, the base component is provided with a rotatable adjusting bolt, which can be rotated to abut against the third fixing member; the abutment of the adjusting bolt against the third fixing member can drive the rotation of the rear derailleur.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a connection structure between a rear derailleur and a frame, including a frame and a rear derailleur. The frame has corresponding first and second through holes on its first and second rear fork ends, respectively, and a through shaft connects the first and second through holes. It also includes: a connecting assembly comprising a first connecting part and a second connecting part; and a tail hook assembly comprising a first mounting part and a second mounting part. The first connecting part and the first mounting part are both connected to the first rear fork end via a first fixing member. The rear derailleur includes a base component with a connecting cavity. The connecting cavity includes a connecting socket, and the second connecting part is inserted into the connecting socket. The second connecting part and the second mounting part are both connected to the connecting cavity via a second fixing member. Alternatively, the second mounting part is connected to an adapter, and the adapter assembly and the second connecting part are both connected to the connecting cavity via a third fixing member.

[0016] The connection structure between the rear derailleur and the frame of this utility model can easily and quickly achieve a stable and reliable connection between the rear derailleur and the frame, with high safety and can ensure a stable and effective shifting effect of the rear derailleur.

[0017] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the existing vehicle frame;

[0019] Figure 2 This is a partial structural diagram of the existing vehicle frame;

[0020] Figure 3 This is one of the structural schematic diagrams of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0021] Figure 4 This is a second schematic diagram of the structure of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0022] Figure 5 This is the third schematic diagram of the structure of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0023] Figure 6 This is the fourth schematic diagram of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0024] Figure 7 This is the fifth structural schematic diagram of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0025] Figure 8 This is the sixth schematic diagram of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0026] Figure 9 This is the seventh structural schematic diagram of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0027] Figure 10 This is the eighth schematic diagram of the structure of Embodiment 1 of the connection structure between the rear derailleur and the frame of this utility model;

[0028] Figure 11 This is one of the structural schematic diagrams of Embodiment 2 of the connection structure between the rear derailleur and the frame of this utility model;

[0029] Figure 12 This is a second schematic diagram of the structure of embodiment 2 of the connection structure between the rear derailleur and the frame of this utility model;

[0030] Figure 13 This is the third schematic diagram of Embodiment 2 of the connection structure between the rear derailleur and the frame of this utility model;

[0031] Figure 14 This is the fourth structural schematic diagram of Embodiment 2 of the connection structure between the rear derailleur and the frame of this utility model;

[0032] Figure 15 This is the fifth structural schematic diagram of Embodiment 2 of the connection structure between the rear derailleur and the frame of this utility model;

[0033] Figure 16 This is the sixth structural schematic diagram of Embodiment 2 of the connection structure between the rear derailleur and the frame of this utility model. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] This utility model provides a connection structure between a rear derailleur and a frame, including a frame 10 and a rear derailleur 20. For example... Figure 1 , Figure 2 As shown, the frame 10 includes a first rear fork end 11 and a second rear fork end 12. The first rear fork end 11 and the second rear fork end 12 are respectively provided with corresponding first through holes 13 and second through holes (not shown in the figure). A through shaft 14 is connected between the first through hole 13 and the second through hole. One end of the through shaft 14 is clearance-fitted into the first through hole 13, and the other end is fastened to the second through hole. The fastening connection can be a bolt connection or other methods commonly used in this technical field, and no specific limitation is made here.

[0036] The rear derailleur 20 can be a rear derailleur commonly used in this technical field. The rear derailleur 20 includes a base component 21; the base component 21 includes a connecting cavity 22, which can be a cylindrical hollow structure with openings at both ends.

[0037] The rear derailleur connection structure of this utility model also includes a connecting component 30, which is a single piece and can be integrally formed by a processing technology, without specific limitations. The connecting component 30 includes a first connecting part 31 and a second connecting part 32, which are respectively located at both ends of the connecting component 30.

[0038] The rear derailleur connection structure of this utility model also includes a tail hook assembly 40. The tail hook assembly 40 is a single piece and can be integrally formed through a processing technology, without specific limitations. The tail hook assembly 40 includes a first mounting part 41 and a second mounting part 42, which are respectively located at both ends of the tail hook assembly 40.

[0039] The connecting component 30 is located outside the first through hole 13, and the tail hook component 40 is located inside the first through hole 13. The inside of the first through hole 13 refers to the side of the first through hole 13 corresponding to the second through hole, and the outside of the first through hole 13 refers to the side of the first through hole 13 opposite to the second through hole. Example 1

[0040] In Embodiment 1 of this utility model, the connection structure between the rear derailleur and the frame is as follows: Figures 3-10 As shown.

[0041] The connecting component 30 can be flat, and the first connecting part 31 can be configured as a countersunk hole, which corresponds to the outer side of the first through hole 13.

[0042] The first mounting part 41 can be configured as a connecting sleeve. The connecting sleeve is a cylindrical hollow structure with openings at both ends. The outer diameter of the connecting sleeve is smaller than the inner diameter of the first through hole 13, and the inner diameter of the connecting sleeve is larger than the outer diameter of the through shaft 14. The connecting sleeve extends into the first through hole 13 from the inside and is sleeved on the through shaft 14.

[0043] The first fastener 50 is a single piece, which can be integrally formed through processing technology, and no specific restrictions are made here.

[0044] The first fixing member 50 includes an internal threaded groove 51, which extends from the first connecting part 31 (countersunk hole) into the first mounting part 41 (connecting sleeve) and is sleeved on the end of the through shaft 14. The end of the through shaft 14 is provided with an external thread, which is threaded into the internal threaded groove 51, thereby allowing the first fixing member 50 to be securely connected to the through shaft 14. Furthermore, the connecting assembly 30 and the tail hook assembly 40 can be connected to the first rear fork end 11 through the first fixing member 50.

[0045] In summary, both the first connecting part 31 and the first mounting part 41 are connected to the first rear fork end 11 via the first fixing member 50.

[0046] The cavity wall of the connecting cavity 22 is provided with a connecting socket 23 that communicates with the connecting cavity 22, and the second connecting part 32 is inserted into the connecting socket 23. By inserting the connecting component 30 into the connecting socket 23, the rear derailleur connection structure can be made compact, and the connection can be made more secure and reliable.

[0047] The second fastener 60 passes through the connecting cavity 22, the second connecting part 32, and the second mounting part 42, thereby connecting the connecting part 30 and the tail hook assembly 40 to the base member 21.

[0048] Specifically, the second connecting portion 32 can be configured with a through hole, and the second mounting portion 42 can be configured as a connecting through groove. Both the second connecting portion 32 and the second mounting portion 42 correspond to the connecting cavity 23. The second fixing member 60 passes through the connecting through hole, the connecting cavity 23, and the connecting through groove.

[0049] More specifically, the second fastener 60 can be a bolt, and the connecting groove can be an internal thread groove, with the second fastener 60 threadedly connected in the connecting groove.

[0050] In summary, the second connecting part 32 is inserted into the connecting socket 23, and both the second connecting part 32 and the second mounting part 42 are connected to the connecting cavity 22 through the second fixing member 60.

[0051] In this embodiment, the second fixing member 60 is fitted with a clearance within the connecting cavity 22, and the rear derailleur 20 as a whole can rotate around the second fixing member 60.

[0052] An adjusting pad 70 abuts between the connecting cavity 22 and the second mounting part 42, and the adjusting pad 70 is fixedly sleeved on the second fixing member 60. By using the adjusting pad 70, the connection strength and stability of the second connecting part 32 and the second mounting part 42 on the base member 21 can be enhanced.

[0053] The adjusting pad 70 can be a single piece, formed by a processing technology, and the adjusting pad 70 is provided with an abutment part 71.

[0054] The base component 21 is threadedly connected to a rotatable adjusting bolt 24, which can be rotated to abut against the contact part 71. Since the adjusting pad 70 is fixed, while the adjusting bolt 24 is rotating and abutting against the contact part 71, the adjusting pad 70 will exert a reverse force on the adjusting bolt 24 and the rear derailleur 20. This reverse force can drive the rotation of the rear derailleur 20. After the rear derailleur 20 rotates to the target angle, the rotation of the adjusting bolt 24 can be stopped. Example 2

[0055] In Embodiment 2 of this utility model, the connection structure between the rear derailleur and the frame is as follows: Figures 11-16 As shown.

[0056] The connecting component 30 can be in the shape of a stepped plate, and the first connecting part 31 can be configured as a countersunk hole, which corresponds to the outer side of the first through hole 13.

[0057] The first mounting part 41 can be configured as a connecting sleeve. The connecting sleeve is a cylindrical hollow structure with openings at both ends. The outer diameter of the connecting sleeve is smaller than the inner diameter of the first through hole 13, and the inner diameter of the connecting sleeve is larger than the outer diameter of the through shaft 14. The connecting sleeve extends into the first through hole 13 from the inside and is sleeved on the through shaft 14.

[0058] The first fastener 50 is a single piece, which can be integrally formed through processing technology, and no specific restrictions are made here.

[0059] The first fastener 50 includes an internal threaded groove 51, with a countersunk hole extending into the connecting sleeve and fitted onto the end of the through shaft 14. The end of the through shaft 14 is provided with an external thread, which is threaded into the internal threaded groove 51, thereby allowing the first fastener 50 to be securely connected to the through shaft 14. Furthermore, the connecting assembly 30 and the tail hook assembly 40 can be connected to the first rear fork end 11 through the first fastener 50.

[0060] In summary, both the first connecting part 31 and the first mounting part 41 are connected to the first rear fork end 11 via the first fixing member 50.

[0061] The adapter 80 is a single piece, which can be integrally formed through processing technology, and no specific restrictions are made here.

[0062] One end of the adapter 80 is provided with a first adapter hole 81, and the second mounting part 42 can be configured as a connecting through groove. The first adapter hole 81 and the second mounting part 41 correspond to each other and are connected by a bolt 43.

[0063] The connecting slot can be an internal threaded slot, and the bolt 43 is threaded into the connecting slot, thereby enabling the connection between the adapter 80 and the first mounting part 41.

[0064] The other end of the adapter 80 is provided with a second adapter hole 82, and the second connecting part 32 can be configured as a connecting hole; the second adapter hole 82 and the connecting hole correspond to the two ends of the connecting cavity 23 respectively, and are connected through the third fixing member 90.

[0065] The third fastener 90 can be a bolt, and the second adapter hole 82 can be an internally threaded hole. The third fastener 90 is threadedly connected to the second adapter hole 82.

[0066] The third fixing member 90 is fitted with a clearance within the connecting cavity 23, and the rear derailleur 50 can rotate along the third fixing member 90.

[0067] A rotatable adjusting bolt 24 is threaded onto the base component 21. The adjusting bolt 24 can be rotated to contact the third fixing member 90. Since the third fixing member 90 is fixed, as the adjusting bolt 24 rotates and contacts the third fixing member 90, the third fixing member 90 exerts a reverse force on the adjusting bolt 24 and the rear derailleur 20. This reverse force can drive the rotation of the rear derailleur 20. After the rear derailleur 20 rotates to the target angle, the rotation of the adjusting bolt 24 can be stopped.

[0068] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A connection structure between a rear derailleur and a frame, comprising a frame and a rear derailleur, wherein a first through hole and a second through hole are respectively provided on a first rear fork end and a second rear fork end of the frame, and a through shaft is connected between the first through hole and the second through hole; characterized in that, Also includes: A connecting component, comprising a first connecting part and a second connecting part; A tail hook assembly, comprising a first mounting portion and a second mounting portion; Both the first connecting part and the first mounting part are connected to the end of the first rear fork by the first fastener; The rear derailleur includes a base component, and the base component is provided with a connecting cavity; The connecting cavity includes a connecting socket, the second connecting part is inserted into the connecting socket, and both the second connecting part and the second mounting part are connected to the connecting cavity through a second fixing member; or, the second mounting part is connected to an adapter, and both the adapter and the second connecting part are connected to the connecting cavity through a third fixing member.

2. The connection structure between the rear derailleur and the frame as described in claim 1, characterized in that, The first mounting part corresponds to the inner side of the first through hole and is sleeved on the through shaft, and the first connecting part corresponds to the outer side of the first through hole; The first fastener passes through and connects the first connecting part and the first mounting part, and is sleeved and connected to the through shaft.

3. The connection structure between the rear derailleur and the frame as described in claim 2, characterized in that, The first fastener includes an internal threaded groove, and the through shaft is provided with an external thread that mates with the internal threaded groove.

4. The connection structure between the rear derailleur and the frame as described in claim 1, characterized in that, The second mounting portion corresponds to the connecting cavity, and the second fixing member passes through and connects the second connecting portion, the connecting cavity and the second mounting portion. The second fixing member is threadedly connected to the second mounting portion.

5. The connection structure between the rear derailleur and the frame as described in claim 4, characterized in that, The second fixing member is fitted with a clearance within the connecting cavity, allowing the rear derailleur to rotate along the second fixing member.

6. The connection structure between the rear derailleur and the frame as described in claim 5, characterized in that, An adjusting pad is provided between the connecting cavity and the second mounting part, and the base component is provided with a rotatable adjusting bolt, which can be rotated to contact the adjusting pad; The rear derailleur can be driven to rotate by the contacting part of the adjusting bolt.

7. The connection structure between the rear derailleur and the frame as described in claim 1, characterized in that, One end of the adapter is provided with a first adapter hole, and a bolt is used to connect the first adapter hole and the second mounting part.

8. The connection structure between the rear derailleur and the frame as described in claim 1, characterized in that, The other end of the adapter is provided with a second adapter hole, the second adapter hole and the second connecting hole are respectively opposite to the two ends of the connecting cavity and are connected through the third fixing member.

9. The connection structure between the rear derailleur and the frame as described in claim 8, characterized in that, The third fixing member is fitted with a clearance within the connecting cavity, and the rear derailleur can rotate along the third fixing member.

10. The connection structure between the rear derailleur and the frame as described in claim 1, characterized in that, The base component is provided with a rotatable adjusting bolt, which can be rotated to abut against the third fixing member; The rear derailleur can be driven to rotate by the contact between the adjusting bolt and the third fixing member.

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