A flywheel-mountable bicycle hook

Abstract

The utility model relates to the technical field of bicycle hook claw, and disclose a kind of bicycle hook claw of flywheel can be installed, including frame, the end of the frame is provided with hook claw, the side of the hook claw is provided with bicycle hub, the end of the bicycle hub is provided with mounting groove, the utility model is provided with hook claw on frame, the side of hook claw is provided with bicycle hub and flywheel, flywheel is then through connecting key groove and is set in the end of bicycle hub, and the end of bicycle hub is then inserted in hook claw by the mounting connection screw rod of rotation fixed, by fixed nut and is set in the end of mounting connection screw rod to its installation fixed, so that the bicycle hub and flywheel connected by mounting connection screw rod are more stable when operating, and the situation that wobble when operating due to clamping gap does not appear, effectively improve the stability when flywheel operates, prevent the problem that abnormal sound or chain jumps tooth appears when subsequent bicycle rides.

Description

Technical Field

[0001] This utility model relates to the field of bicycle dropper technology, specifically a bicycle dropper that can be fitted with a flywheel. Background Technology

[0002] In a bicycle drivetrain, the dropout is a key component connecting the frame and the rear wheel. Its structural design directly affects the installation stability of the freewheel, transmission efficiency, and the overall riding experience.

[0003] A search revealed that this utility model provides an adjustable bicycle dropper, with Chinese patent publication number CN 221563334 U. The dropper includes a dropper body and a detachable lug connected thereto. The dropper body has a first connecting hole and a second connecting hole on each side. A connecting shaft is rotatably connected to the second connecting hole. The lug is sleeved on one end of the connecting shaft. An adjustment component is provided on the other end of the connecting shaft. The adjustment component includes a first gear sleeved on the other end of the connecting shaft. A rotating shaft is rotatably connected to the dropper body. A second gear, meshing with the first gear, is sleeved on the rotating shaft. In this utility model, by unscrewing the locking nut and then rotating the handle, the rotating shaft and the second gear are simultaneously rotated, thereby engaging and driving the connecting shaft and the lug to rotate, thus adjusting the angle of the lug. Finally, the locking nut is threaded onto a screw to limit the rotation shaft, thereby completing the adjustment of the lug angle and increasing the applicability of the bicycle dropper and lug.

[0004] The droppers in the aforementioned patent still have some shortcomings. The droppers are the "interface" for fixing the wheels to the frame, while the freewheel is the core gear set of the transmission system. The two are linked together through the hub, chain, and derailleur. However, when installing the freewheel and hub, the existing droppers are prone to gaps between the droppers and the hub shaft. These gaps are mostly caused by repeated disassembly and assembly or mismatch between the hub and the droppers. As a result, it is difficult to achieve a precise fit between the droppers and the hub, which will reduce the stability of the freewheel during operation and cause abnormal noise or chain skipping. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a bicycle dropper that can be used to install a freewheel. This solves the problem that existing droppers often have gaps between the dropper and the hub shaft when installing a freewheel and hub. These gaps are often caused by repeated disassembly and assembly or mismatch between the hub and the dropper, making it difficult to achieve a precise fit between the dropper and the hub. This results in decreased stability of the freewheel during operation, leading to abnormal noises or chain skipping.

[0006] This utility model provides the following technical solution: a bicycle dropper for mounting a freewheel, including a frame, a dropper is provided at the end of the frame, a bicycle hub is provided on the side of the dropper, and a mounting groove is provided at the end of the bicycle hub;

[0007] A positioning key block is provided on the top side of one end of the bicycle hub, and a freewheel is provided on the side of the bicycle hub. A connecting keyway is provided on the inner wall of the freewheel. The freewheel is inserted into the connecting keyway through the positioning key block and sleeved on the end of the bicycle hub. A mounting connecting screw is provided on the side of the mounting groove, and a bearing is provided at the end of the mounting connecting screw. The bearing is fixedly inserted into the mounting groove.

[0008] Preferred technical solution 1: A first washer is sleeved on the mounting connecting screw, and the hook is engaged on the mounting connecting screw.

[0009] Preferred technical solution 2: The end of the mounting connecting screw is further fitted with a second washer, and the side of the second washer is provided with a gap filling collar.

[0010] Preferred technical solution 3: The gap filling collar is sleeved on the mounting connecting screw and inserted into the hook, and a fixing nut is sleeved on the end of the mounting connecting screw.

[0011] Preferred technical solution four: The longitudinal section of the connecting keyway is the same as the longitudinal section of the positioning key block.

[0012] This solution enables the positioning key block to be precisely inserted into the connecting keyway, thereby assembling the flywheel and the end of the bicycle hub.

[0013] Preferred technical solution five: The gap filling collar is sleeved on the mounting connecting screw at the hook engagement point.

[0014] This solution enables the gap-filling collar to fill the gap between the hook claw and the mounting connecting screw, thereby improving the stability of the hook claw on the mounting connecting screw.

[0015] Compared with the prior art, the present invention provides a bicycle dropper that can be fitted with a freewheel, which has the following advantages:

[0016] (1) This utility model has a hook on the frame, a bicycle hub and a freewheel on the side of the hook. The freewheel is fitted onto the end of the bicycle hub through a connecting keyway. The end of the bicycle hub is inserted into the hook by a rotating and fixed mounting screw. The connection between the mounting screw and the hook is made by a gap-filling collar fitted on the mounting screw, so that there is no gap when the hook is fitted onto the mounting screw. The fixing nut is fitted onto the end of the mounting screw to fix it. This makes the bicycle hub and freewheel connected by the mounting screw more stable during operation. There will be no shaking during operation due to the gap. This effectively improves the stability of the freewheel during operation and prevents abnormal noise or chain skipping during subsequent bicycle riding. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is an exploded view of the structure of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of the flywheel structure;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of the structure of the gap-filling collar.

[0021] In the diagram: 1. Frame; 2. Mounting dropper; 3. Bicycle hub; 4. Mounting slot; 5. Positioning key block; 6. Freewheel; 7. Connecting keyway; 8. Bearing; 9. Mounting connecting screw; 10. First washer; 11. Second washer; 12. Gap filler collar; 13. Fixing nut. Detailed Implementation

[0022] Please see Figures 1-4 ,

[0023] Example 1: A bicycle dropper for mounting a freewheel includes a frame 1, a dropper 2 at the end of the frame 1, a bicycle hub 3 on the side of the dropper 2, and a mounting groove 4 at the end of the bicycle hub 3.

[0024] A positioning key block 5 is provided on the top side of one end of the bicycle hub 3. A freewheel 6 is provided on the side of the bicycle hub 3. A connecting keyway 7 is provided on the inner wall of the freewheel 6. The freewheel 6 is inserted into the connecting keyway 7 through the positioning key block 5 and sleeved on the end of the bicycle hub 3. A mounting connecting screw 9 is provided on the side of the mounting groove 4. A bearing 8 is provided at the end of the mounting connecting screw 9. The bearing 8 is fixedly inserted into the mounting groove 4. A first washer 10 is sleeved on the mounting connecting screw 9. A hook 2 is engaged on the mounting connecting screw 9. A second washer 11 is also sleeved at the end of the mounting connecting screw 9. A gap filling collar 12 is provided on the side of the second washer 11.

[0025] Example 2: The difference between this example and Example 1 is that the gap filling collar 12 is sleeved on the mounting connecting screw 9 and inserted into the hook 2, and the end of the mounting connecting screw 9 is sleeved with a fixing nut 13.

[0026] Example 3: The difference between this example and Example 1 is that the longitudinal section of the connecting keyway 7 is the same as the longitudinal section of the positioning key block 5.

[0027] This allows the positioning key block 5 to be precisely inserted into the connecting keyway 7, enabling the assembly of the flywheel 6 with the end of the bicycle hub 3.

[0028] Example 4: The difference between this example and Example 1 is that the gap filling collar 12 is fitted onto the mounting connecting screw 9 at the hook 2 engagement point.

[0029] This allows the gap-filling collar 12 to fill the gap between the hook 2 and the mounting connecting screw 9, thereby improving the stability of the hook 2 on the mounting connecting screw 9.

[0030] In this embodiment, when installing the freewheel and hub, the existing pawl is prone to gaps between the pawl and the hub shaft. These gaps are mostly caused by repeated disassembly and assembly or mismatch between the hub and the pawl, making it difficult to achieve a precise fit between the pawl and the hub. This will cause the freewheel to become less stable during operation, resulting in abnormal noise or chain skipping.

[0031] In summary, in practical implementation, when the user needs to install the freewheel 6 on the side of the pawl 2, the user first needs to put the freewheel 6 on the end of the bicycle hub 3 so that the positioning key block 5 is inserted into the connecting keyway 7, thereby making the connection between the freewheel 6 and the bicycle hub 3 more stable. The end of the bicycle hub 3 is provided with a mounting groove 4, and the mounting connecting screw 9 is rotatably fixed in the mounting groove 4 through the bearing 8. The end of the mounting connecting screw 9 is then locked onto the pawl 2. Before the pawl 2 is locked onto the mounting connecting screw 9.

[0032] The user also needs to fit a second washer 11 and a gap-filling collar 12 onto the mounting screw 9, so that the gap-filling collar 12 is located at the position where the mounting screw 9 is engaged by the pawl 2. The gap-filling collar 12 fills the gap when the pawl 2 engages with the mounting screw 9, thus ensuring that there is no gap when the pawl 2 is engaged with the mounting screw 9. This makes the bicycle hub 3 and freewheel 6 connected by the mounting screw 9 more stable during operation, and prevents wobbling during operation due to engagement gaps. This effectively improves the stability of the freewheel 6 during operation and prevents abnormal noises or chain skipping problems during subsequent bicycle riding.

Claims

1. A bicycle dropper for mounting a freewheel, comprising a frame (1), characterized in that: The end of the frame (1) is provided with a hook (2), the side of the hook (2) is provided with a bicycle hub (3), and the end of the bicycle hub (3) is provided with a mounting groove (4). A positioning key block (5) is provided on the top side of one end of the bicycle hub (3). A freewheel (6) is provided on the side of the bicycle hub (3). A connecting keyway (7) is provided on the inner wall of the freewheel (6). The freewheel (6) is inserted into the connecting keyway (7) through the positioning key block (5) and sleeved on the end of the bicycle hub (3). A mounting connecting screw (9) is provided on the side of the mounting groove (4). A bearing (8) is provided at the end of the mounting connecting screw (9). The bearing (8) is fixedly inserted into the mounting groove (4).

2. The bicycle dropper for mounting a freewheel according to claim 1, characterized in that: The first washer (10) is fitted on the mounting screw (9), and the claw (2) is engaged on the mounting screw (9).

3. A bicycle dropper for mounting a freewheel according to claim 2, characterized in that: The end of the mounting connecting screw (9) is also fitted with a second washer (11), and the side of the second washer (11) is provided with a gap filling collar (12).

4. A bicycle dropper for mounting a freewheel according to claim 3, characterized in that: The gap filling collar (12) is sleeved on the mounting connecting screw (9) and inserted into the claw (2). The end of the mounting connecting screw (9) is sleeved with a fixing nut (13).

5. A bicycle dropper for mounting a freewheel according to claim 4, characterized in that: The longitudinal section of the connecting keyway (7) is the same as the longitudinal section of the positioning key block (5).

6. A bicycle dropper for mounting a freewheel according to claim 5, characterized in that: The gap filling collar (12) is sleeved on the mounting connecting screw (9) at the hook (2) engagement point.

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