Anti-loose pedal crank locking mechanism

Abstract

The utility model discloses a kind of anti-loosening pedal crank locking mechanisms, belong to bicycle parts technical field.A kind of anti-loosening pedal crank locking mechanism, including sprocket, sprocket is fixedly connected with mounting shaft, further include: crank, detachably connected on mounting shaft;Connecting sleeve, fixedly connected on crank, and connecting sleeve is connected with mounting shaft;Threaded sleeve, threaded connection is in connecting sleeve;Limiting rod, sliding connection is in threaded sleeve;Limiting hole, be established in the inner side wall of connecting sleeve;The utility model is matched with the trapezoidal design of limiting block and limiting groove, and limiting rod in threaded sleeve and limiting hole in connecting sleeve auxiliary cooperation, can effectively enhance the stability of crank and mounting shaft connection, effectively avoid the risk of stepping empty due to connection loosening, guarantee cycling safety;Meanwhile the utility model is by using the magnetic attraction of first magnet and second magnet, additional limiting is formed to threaded sleeve, reduce the possibility that threaded sleeve is shaken and turns off.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, and in particular to an anti-loosening pedal crank locking mechanism. Background Technology

[0002] In today's era of green travel, cycling is becoming increasingly popular due to its natural environment and aerobic exercise. The pedal crank is a crucial transmission component on a bicycle, and the stability of its connection with the sprocket shaft directly affects the rider's safety.

[0003] In existing technologies, the connection structure between the pedal crank and the mounting shaft mostly relies on simple threaded or snap-fit ​​connections. Under conditions such as long-term pedaling force and bumpy roads, the connection may easily loosen or even fall off, causing the rider to miss the pedal. This not only affects the smoothness of riding but also greatly threatens the rider's safety. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose an anti-loosening foot crank locking mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A foot crank locking mechanism for preventing loosening includes a sprocket, on which a mounting shaft is fixedly connected, and further includes:

[0007] The crank is detachably connected to the mounting shaft;

[0008] A connecting sleeve is fixedly connected to the crank, and the connecting sleeve is connected to the mounting shaft;

[0009] Threaded sleeve, threaded connection to the connecting sleeve;

[0010] The limiting rod is slidably connected to the threaded sleeve.

[0011] A limiting hole is formed on the inner side wall of the connecting sleeve. When the threaded sleeve is rotated into the connecting sleeve, the limiting rod slides into the limiting hole.

[0012] Preferably, a limiting block is fixedly connected to the connecting sleeve, and multiple sets of the limiting blocks are evenly distributed on the connecting sleeve. A limiting groove is formed on the mounting shaft, and the limiting block matches the limiting groove.

[0013] Furthermore, the limiting block is a trapezoidal block.

[0014] In order to ensure that the limiting rod is positioned in the mounting hole, preferably, the threaded sleeve has a mounting hole, a spring is fixedly connected in the mounting hole, and the limiting rod is slidably connected in the mounting hole. One end of the spring is fixedly connected to the bottom wall of the mounting hole, and the other end of the spring is fixedly connected to the limiting rod.

[0015] To further improve the installation stability of the threaded sleeve, preferably, a first magnet is fixedly connected to the threaded sleeve, and a second magnet is fixedly connected to the connecting sleeve, with the first magnet and the second magnet attracting each other.

[0016] To prevent the limiting rod from jamming, preferably, the top of the limiting rod has a relief arc surface.

[0017] Compared with the prior art, this utility model provides an anti-loosening foot crank locking mechanism, which has the following beneficial effects:

[0018] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model, through the trapezoidal matching design of the limiting block and the limiting groove, and the auxiliary cooperation between the limiting rod in the threaded sleeve and the limiting hole in the connecting sleeve, can effectively enhance the stability of the connection between the crank and the mounting shaft compared to the traditional connection method, effectively avoid the risk of stepping off the pedal due to loose connection, and ensure the smoothness and safety of the riding process. At the same time, this utility model uses the magnetic attraction of the first magnet and the second magnet to form an additional limit on the threaded sleeve, reducing the possibility of the threaded sleeve falling off due to shaking and rotation. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the anti-loosening foot crank locking mechanism proposed in this utility model. Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of the anti-loosening foot crank locking mechanism proposed in this utility model. Figure 2 ;

[0021] Figure 3 This utility model proposes an anti-loosening foot crank locking mechanism. Figure 2 Enlarged view of part A in the image;

[0022] Figure 4 An exploded view of the connecting sleeve in an anti-loosening foot crank locking mechanism proposed in this utility model;

[0023] Figure 5 This is an exploded view of the threaded sleeve in the anti-loosening foot crank locking mechanism proposed in this utility model;

[0024] Figure 6 This utility model proposes an anti-loosening foot crank locking mechanism. Figure 5Enlarged view of part B in the image;

[0025] Figure 7 This is a schematic diagram of the connection structure between the limit rod and the spring in an anti-loosening foot crank locking mechanism proposed in this utility model.

[0026] In the diagram: 1. Crank; 101. Connecting sleeve; 1011. Limiting block; 1012. Limiting hole; 1013. Second magnet; 2. Sprocket; 201. Mounting shaft; 2011. Limiting groove; 3. Threaded sleeve; 301. Mounting hole; 3011. Limiting rod; 3012. Spring; 302. First magnet; 4. Leaving arc surface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1:

[0029] Reference Figures 1-7 A foot crank locking mechanism for preventing loosening includes a sprocket 2, on which a mounting shaft 201 is fixedly connected, and further includes:

[0030] Crank 1 is detachably connected to mounting shaft 201;

[0031] The connecting sleeve 101 is fixedly connected to the crank 1, and the connecting sleeve 101 is connected to the mounting shaft 201;

[0032] Threaded sleeve 3 is threadedly connected to connecting sleeve 101;

[0033] The limiting rod 3011 is slidably connected to the threaded sleeve 3;

[0034] The limiting hole 1012 is opened on the inner side wall of the connecting sleeve 101. When the threaded sleeve 3 is turned into the connecting sleeve 101, the limiting rod 3011 slides into the limiting hole 1012.

[0035] A limiting block 1011 is fixedly connected to the connecting sleeve 101. Multiple sets of limiting blocks 1011 are evenly distributed on the connecting sleeve 101. A limiting groove 2011 is opened on the mounting shaft 201, and the limiting block 1011 matches the limiting groove 2011.

[0036] Reference Figures 1-7During installation, the worker holds the crank 1 and aligns the limiting block 1011 on the connecting sleeve 101 with the limiting groove 2011 on the mounting shaft 201, and presses the limiting block 1011 into the limiting groove 2011. After the crank 1 is initially fixed, the worker first manually turns the threaded sleeve 3 into the connecting sleeve 101, and then uses a wrench to tighten the threaded sleeve 3 so that the inner wall of the threaded sleeve 3 is tightly against the connecting sleeve 101, thereby fixing and locking the connecting sleeve 101 to prevent it from falling off and slipping during subsequent foot pedaling, thus improving the safety of use.

[0037] Limit block 1011 is a trapezoidal block.

[0038] Reference Figure 3 By setting the limiting block 1011 as a trapezoidal block, the stability of the limiting block 1011 in the limiting groove 2011 can be effectively improved.

[0039] The threaded sleeve 3 has a mounting hole 301. A spring 3012 is fixedly connected in the mounting hole 301, and a limiting rod 3011 is slidably connected in the mounting hole 301. One end of the spring 3012 is fixedly connected to the inner bottom wall of the mounting hole 301, and the other end of the spring 3012 is fixedly connected to the limiting rod 3011.

[0040] Reference Figure 6 , Figure 7 With the spring 3012, when the limiting rod 3011 is stuck in the mounting hole 301, the spring 3012 can push the limiting rod 3011 into the mounting hole 301.

[0041] A first magnet 302 is fixedly connected to the threaded sleeve 3, and a second magnet 1013 is fixedly connected to the connecting sleeve 101. The first magnet 302 and the second magnet 1013 attract each other.

[0042] Reference Figures 1-6 When the threaded sleeve 3 is installed on the connecting sleeve 101, the rotation of the threaded sleeve 3 will cause the first magnet 302 to move closer to the second magnet 1013. When the threaded sleeve 3 is fully rotated into the connecting sleeve 101, the first magnet 302 is just touching the second magnet 1013. At this time, the first magnet 302 and the second magnet 1013 attract each other. Through the attraction between the first magnet 302 and the second magnet 1013, the threaded sleeve 3 is limited, making it difficult for it to rotate, thereby reducing the possibility of the threaded sleeve 3 falling off due to shaking.

[0043] Reference Figure 7 In specific implementation, the top of the limiting rod 3011 is provided with a clearance arc surface 4.

[0044] The clearance arc surface 4 at the top of the limiting rod 3011 prevents the limiting rod 3011 from getting stuck in the connecting sleeve 101, thereby ensuring that the limiting rod 3011 can slide stably into the limiting hole 1012.

[0045] By using the trapezoidal matching design of the limiting block 1011 and the limiting groove 2011, and the auxiliary cooperation between the limiting rod 3011 in the threaded sleeve 3 and the limiting hole 1012 in the connecting sleeve 101, compared with the traditional connection method, the stability of the connection between the crank 1 and the mounting shaft 201 can be effectively enhanced, effectively avoiding the risk of stepping off the bike due to loose connection, and ensuring the smoothness and safety of the riding process; at the same time, by using the magnetic attraction of the first magnet 302 and the second magnet 1013, the present invention forms an additional limit on the threaded sleeve 3, reducing the possibility of the threaded sleeve 3 falling off due to shaking and rotation.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A foot crank locking mechanism for preventing loosening, comprising a sprocket disc (2), wherein a mounting shaft (201) is fixedly connected to the sprocket disc (2), characterized in that, Also includes: The crank (1) is detachably connected to the mounting shaft (201); A connecting sleeve (101) is fixedly connected to the crank (1), and the connecting sleeve (101) is connected to the mounting shaft (201); Threaded sleeve (3), threaded connection to connecting sleeve (101); The limiting rod (3011) is slidably connected to the threaded sleeve (3); A limiting hole (1012) is provided on the inner side wall of the connecting sleeve (101). When the threaded sleeve (3) is turned into the connecting sleeve (101), the limiting rod (3011) slides into the limiting hole (1012).

2. The anti-loosening foot crank locking mechanism according to claim 1, characterized in that, A limiting block (1011) is fixedly connected to the connecting sleeve (101), and multiple sets of the limiting blocks (1011) are evenly distributed on the connecting sleeve (101). A limiting groove (2011) is opened on the mounting shaft (201), and the limiting block (1011) matches the limiting groove (2011).

3. The anti-loosening foot crank locking mechanism according to claim 2, characterized in that, The limiting block (1011) is a trapezoidal block.

4. The anti-loosening foot crank locking mechanism according to claim 1, characterized in that, The threaded sleeve (3) has an installation hole (301) and a spring (3012) is fixedly connected in the installation hole (301). The limiting rod (3011) is slidably connected in the installation hole (301). One end of the spring (3012) is fixedly connected to the bottom wall of the installation hole (301), and the other end of the spring (3012) is fixedly connected to the limiting rod (3011).

5. The anti-loosening foot crank locking mechanism according to claim 1, characterized in that, A first magnet (302) is fixedly connected to the threaded sleeve (3), and a second magnet (1013) is fixedly connected to the connecting sleeve (101). The first magnet (302) and the second magnet (1013) attract each other.

6. The anti-loosening foot crank locking mechanism according to claim 1, characterized in that, The top of the limiting rod (3011) is provided with a clearance arc surface (4).

Images