A variable speed hanger mounting mechanism for a bicycle frame

Abstract

The utility model relates to a hanger mounting technical field, and disclose a bicycle frame speeder hanger mounting mechanism, including the hanger main part, the one end of hanger main part is provided with the installation jack, the other end of hanger main part is provided with two connecting perforation, the fixed bolt is inserted in the connecting perforation, the top of hanger mounting post is provided with hanger stable installation subassembly, the utility model discloses a hanger stable installation subassembly is provided on the hanger main part, wherein the installation connecting ring in hanger stable installation subassembly can be fixed on the hanger main part through the first fastening bolt, the end of second fastening bolt not only can be set up the installation limiting slot of hanger mounting post and resist fixed, still can play the role of the rotation limit of hanger mounting post, thereby make the connection between hanger mounting post and hanger main part more stable, and further avoided the risk of the unstable between the guide pulley and the freewheel of speeder subsequently, effectively improved the riding safety of user.

Description

Technical Field

[0001] This utility model relates to the field of suspension lug installation technology, specifically a bicycle frame gear shift suspension lug installation mechanism. Background Technology

[0002] In a bicycle's gear system, the derailleur hanger (also known as the tail hook) is a key component connecting the bicycle frame and the rear derailleur. Its installation accuracy and stability directly affect the working performance and shifting precision of the rear derailleur.

[0003] A search revealed that this utility model relates to the field of bicycle frame derailleur hanger technology, specifically a novel mounting mechanism for a bicycle frame derailleur hanger. The mechanism includes a derailleur hanger body, with a circular ring at one end. A hook is fitted onto the surface of the circular ring, and a stepped threaded hole is formed on the side of the hook. A screw hole corresponding to the stepped threaded hole is formed on the surface of the circular ring, and a fastening screw is threaded between the stepped threaded hole and the screw hole. This utility model uses the stepped threaded hole and the fastening screw to fix the hanger and hook together, thereby improving the stability of the hanger fixed in the hook and increasing the ease of operation for workers.

[0004] The hanger mounting mechanism in the aforementioned patent still has certain shortcomings. Since most bicycle frames use external or internal derailleur hanger mounting methods, and for external hangers, they are usually directly fixed to the end of the rear fork with screws. Although this mounting method is simple in structure, in actual use, due to bumps, vibrations and external impacts during riding, the screws can easily loosen, causing the hanger angle to shift. This shifting will affect the parallelism between the rear derailleur guide wheel and the freewheel, resulting in shifting jams, chain skipping and other malfunctions, seriously affecting the riding experience and safety. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a bicycle frame derailleur hanger mounting mechanism. This solves the problem that most bicycle frames use external or internal derailleur hanger mounting methods. For external hangers, the installation is typically done by directly fixing them to the end of the rear fork with screws. While this method is simple in structure, during actual use, bumps, vibrations, and external impacts during riding can easily cause the screws to loosen, leading to a shift in the hanger angle. This shift affects the parallelism between the rear derailleur guide wheel and the freewheel, resulting in shifting jams, chain skipping, and other malfunctions, severely impacting the riding experience and safety.

[0006] This utility model provides the following technical solution: a bicycle frame gear shift lug mounting mechanism, including a lug body, one end of the lug body is provided with a mounting hole, the other end of the lug body is provided with two connecting holes, each of the connecting holes is provided with a fixing bolt, the mounting hole is provided with a lug mounting post, the top of the lug mounting post is provided with a mounting limiting groove evenly distributed around its top, and the top of the lug mounting post is provided with a lug stabilizing mounting component;

[0007] The lug stabilizing mounting assembly includes a mounting connecting ring disposed on the top side of the mounting socket. The top of the mounting connecting ring is evenly provided with first sockets around its perimeter, and the top of the mounting socket is evenly provided with first screw holes around its perimeter. Each of the first sockets is fitted with a first fastening bolt, and the bottom end of the first fastening bolt is inserted into the first screw hole.

[0008] Preferred technical solution 1: The mounting connecting ring is provided with second screw holes evenly distributed around its perimeter, and a second fastening bolt is inserted into each of the second screw holes.

[0009] Preferred technical solution 2: A protective cap is provided at the top of the lifting lug mounting column, and a rubber ring is provided on the inner wall of the bottom end of the protective cap.

[0010] Preferred technical solution 3: The inner diameter of the mounting limiting groove is the same as the diameter of the second fastening bolt.

[0011] This design allows the second fastening bolt to pass through the second screw hole and be inserted into the installation limiting groove to abut and fix the lifting lug mounting column.

[0012] Preferred technical solution four: The end of the second fastening bolt is provided with a cross groove.

[0013] This solution makes it easier for users to rotate the second fastening bolt.

[0014] Preferred technical solution five: The bottom end of the protective cap is fitted onto the outside of the mounting connecting ring.

[0015] This design enables the protective cap to protect the end of the lifting lug mounting column and the outside of the mounting connection ring.

[0016] Compared with the prior art, this utility model provides a bicycle frame gearshift hanger mounting mechanism, which has the following advantages:

[0017] (1) This utility model provides a suspension lug stabilization mounting component on the suspension lug body. The mounting connecting ring in the suspension lug stabilization mounting component can be fixed to the suspension lug body by the first fastening bolt. The second fastening bolt inserted into the second screw hole can not only abut against the mounting limit groove opened on the suspension lug mounting column, but also play a role in limiting the rotation of the suspension lug mounting column. This makes the connection between the suspension lug mounting column and the suspension lug body more stable and will not be affected by the loosening of the screw. This avoids the risk of instability between the guide wheel and the flywheel of the derailleur, and effectively improves the riding safety of the user. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is an exploded view of the structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of the structure with the connecting ring installed in the middle;

[0021] Figure 4 For the present utility model Figure 1 Schematic diagram of the central lifting lug mounting column structure.

[0022] In the diagram: 1. Lifting lug body; 2. Mounting hole; 3. Connecting hole; 4. Fixing bolt; 5. Lifting lug mounting post; 6. Mounting limit groove; 7. Lifting lug stabilizing mounting assembly;

[0023] 701. Installation connecting ring; 702. First insertion hole; 703. First screw hole; 704. First fastening bolt; 705. Second screw hole; 706. Second fastening bolt; 707. Protective cap; 708. Rubber ring. Detailed Implementation

[0024] Please see Figure 1-4 ,

[0025] Example 1: A bicycle frame gear shift lug mounting mechanism includes a lug body 1. One end of the lug body 1 has a mounting hole 2, and the other end of the lug body 1 has two connecting holes 3. Fixing bolts 4 are inserted into each connecting hole 3. A lug mounting post 5 is inserted into the mounting hole 2. The top of the lug mounting post 5 has evenly distributed mounting limiting grooves 6 around its top. A lug stabilizing mounting component 7 is provided on the top of the lug mounting post 5.

[0026] The lifting lug stabilizing mounting assembly 7 includes a mounting connecting ring 701 disposed on the top side of the mounting socket 2. The top of the mounting connecting ring 701 is evenly provided with first sockets 702 around its circumference. The top of the mounting socket 2 is evenly provided with first screw holes 703 around its circumference. First fastening bolts 704 are inserted into the first sockets 702. The bottom ends of the first fastening bolts 704 are inserted into the first screw holes 703. The mounting connecting ring 701 is evenly provided with second screw holes 705 around its circumference. Second fastening bolts 706 are inserted into the second screw holes 705. The top of the lifting lug mounting column 5 is provided with a protective cap 707. The inner wall of the bottom end of the protective cap 707 is provided with a rubber ring 708.

[0027] Example 2: The difference between this example and Example 1 is that the inner diameter of the mounting limiting groove 6 is the same as the diameter of the second fastening bolt 706.

[0028] This allows the second fastening bolt 706 to pass through the second screw hole 705 and be inserted into the installation limiting groove 6 to abut and fix the lifting lug mounting column 5.

[0029] Example 3: The difference between this example and Example 1 is that the end of the second fastening bolt 706 is provided with a cross groove.

[0030] This makes it easier for users to rotate the second fastening bolt 706.

[0031] Example 4: The difference between this example and Example 1 is that the bottom end of the protective cap 707 is fitted onto the outside of the mounting connecting ring 701.

[0032] This ensures that the protective cap 707 protects the end of the lifting lug mounting column 5 and the outer side of the mounting connecting ring 701.

[0033] In this embodiment, since most bicycle frames use external or internal derailleur hanger mounting methods, and for external hangers, they are usually fixed directly to the end of the rear fork of the frame with screws. Although this mounting method is simple in structure, in actual use, due to bumps, vibrations and external impacts during riding, the screws can easily become loose, causing the hanger angle to shift. This shifting of the hanger will affect the parallelism between the rear derailleur guide wheel and the freewheel, resulting in shifting jams, chain skipping and other malfunctions, which seriously affect the riding experience and safety.

[0034] In summary, in specific implementation, when the user needs to install the lifting lug body 1 on the lifting lug mounting column 5, a lifting lug stabilizing mounting component 7 is provided at the top of the mounting hole 2. The mounting connecting ring 701 in the lifting lug stabilizing mounting component 7 has a first insertion hole 702 evenly opened. By inserting a first fastening bolt 704 into the first insertion hole 702, the bottom end of the first fastening bolt 704 is inserted into the first screw hole 703, thereby fixing the mounting connecting ring 701 to the top of the lifting lug body 1. The mounting connecting ring 701 has a second screw hole 705 opened around its perimeter. When the top of the lifting lug mounting column 5 passes through the mounting hole 2 and the middle of the mounting connecting ring 701,

[0035] Furthermore, the mounting groove 6 on the lug mounting column 5 is on the same straight line as the second screw hole 705. The user then inserts the second fastening bolt 706 into the second screw hole 705 and continuously rotates the second fastening bolt 706 so that the end of the second fastening bolt 706 is inserted into the mounting groove 6. The second fastening bolt 706 is used to abut and fix the top of the lug mounting column 5, thus fixing the lug mounting column 5 and the lug body 1 together.

[0036] Compared to traditional screw connections, this fixing method, while securing the lug mounting post 5 with the second fastening bolt 706, also restricts the rotation of the lug mounting post 5 by inserting the end of the second fastening bolt 706 into the mounting limit groove 6. This makes the connection between the lug mounting post 5 and the lug body 1 more stable and unaffected by loose screws, thus avoiding the risk of instability between the guide wheel and flywheel of the derailleur and effectively improving the user's riding safety.

Claims

1. A variable speed hanger mounting mechanism for a bicycle frame, comprising a hanger body (1), characterised in that: One end of the lifting lug body (1) is provided with an installation hole (2), and the other end of the lifting lug body (1) is provided with two connecting through holes (3). Fixing bolts (4) are inserted into each of the connecting through holes (3). Lifting lug mounting posts (5) are inserted into the installation hole (2). Installation limiting grooves (6) are evenly provided around the top of the lifting lug mounting posts (5). A lifting lug stabilizing mounting component (7) is provided on the top of the lifting lug mounting posts (5). The lug stabilizing mounting assembly (7) includes a mounting connecting ring (701) disposed on the top side of the mounting socket (2). The top of the mounting connecting ring (701) is evenly provided with first sockets (702) around its top edge. The top of the mounting socket (2) is evenly provided with first screw holes (703) around its top edge. First fastening bolts (704) are inserted into the first sockets (702). The bottom end of the first fastening bolts (704) is inserted into the first screw holes (703).

2. The bicycle frame gearshift hanger mounting mechanism according to claim 1, characterized in that: The mounting connecting ring (701) has a second screw hole (705) evenly opened around its perimeter, and a second fastening bolt (706) is inserted into each of the second screw holes (705).

3. The bicycle frame gearshift hanger mounting mechanism according to claim 2, characterized in that: The top of the lifting lug mounting column (5) is provided with a protective cap (707), and the inner wall of the bottom end of the protective cap (707) is provided with a rubber ring (708).

4. The bicycle frame gearshift hanger mounting mechanism according to claim 3, characterized in that: The inner diameter of the mounting limiting groove (6) is the same as the diameter of the second fastening bolt (706).

5. The bicycle frame gearshift hanger mounting mechanism according to claim 4, characterized in that: The end of the second fastening bolt (706) has a cross groove.

6. The bicycle frame gearshift hanger mounting mechanism according to claim 5, characterized in that: The bottom end of the protective cap (707) is fitted onto the outside of the mounting connecting ring (701).

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