Bicycle pedal crank mechanism

Abstract

The utility model provides a bicycle pedal crank mechanism which relates to the technical field of bicycles and comprises a crank, rotating shafts and pedals, the rotating shafts are arranged on the two sides of the crank, the pedals are arranged in the rotating shafts, connecting assemblies are arranged between the pedals and the rotating shafts, and the pedals are connected with the rotating shafts through the connecting assemblies. An adjusting assembly is arranged between the connecting assembly and the pedal, the adjusting assembly is used for adjusting the position of the pedal, the connecting assembly is arranged between the rotating shaft and the pedal, the connecting block is assembled into the limiting groove, and then the inserting block is pushed by the restoring force of the spring to slide in the movable bin in a reset mode and abut against the inserting groove; and then the pull rod is pulled to drive the inserting block to slide out of the inserting groove, so that the purpose of quickly disassembling and assembling the pedal can be achieved, and the situation that a fastener used for connecting the pedal and the rotating shaft is corroded or rusted, so that the fastener is difficult to rotate, and the disassembling difficulty of the pedal is increased is prevented.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a bicycle pedal crank mechanism. Background Technology

[0002] Since its invention, the bicycle's drivetrain system has undergone continuous improvement and refinement, gradually evolving into the modern mainstream drivetrain system composed of pedals, chainrings, cranks, chain, freewheel, and rear wheel. Among these, the crankset is the core component of the bicycle drivetrain, connecting the pedals to the chainrings and providing the user with a sufficient range of gears to select the appropriate gears for the terrain. The design of the crankset must consider not only transmission efficiency but also rider comfort and safety.

[0003] In the prior art, over time, especially if the bicycle is stored in a humid or adverse environment, the connection between the pedal and the crank may be affected by corrosion or rust, which may cause the fasteners to become difficult to turn, thus increasing the difficulty of pedal removal. Summary of the Invention

[0004] This utility model mainly provides a connecting component set between the pivot and the pedal. By assembling the connecting block into the limiting groove, and then using the restoring force of the spring to push the plug block to reset and slide in the movable chamber and abut against the slot, and then pulling the pull rod to make the pull rod drive the plug block to slide out of the slot, the purpose of quick assembly and disassembly of the pedal can be achieved. This prevents the fasteners used to connect the pedal and the pivot from being affected by corrosion or rust, which would make the fasteners difficult to rotate and thus increase the difficulty of disassembling the pedal.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bicycle pedal crank mechanism, including a crank, a pivot, and a pedal. A pivot is provided on both sides of the crank, and a pedal is provided inside each pivot. A connecting component is provided between the pedal and the pivot. The pedal is connected to the pivot through the connecting component. An adjustment component is provided between the connecting component and the pedal. The adjustment component is used to adjust the position of the pedal.

[0006] Preferably, the connecting assembly includes a limiting groove formed in the rotating shaft, a connecting block sliding in each limiting groove, a movable chamber provided on the outer wall of the rotating shaft, a plug-in block sliding in each movable chamber, the plug-in block sliding in the rotating shaft, a slot provided in the connecting block corresponding to the inner end surface of the plug-in block, a pull rod provided on the other end surface of each plug-in block, a spring wound on the surface of each pull rod, and an adjusting assembly provided on the side surface of the connecting block away from the crank.

[0007] Preferably, the outer end surface of the pull rod is provided with a handle, and the handle is designed in a circular shape.

[0008] Preferably, the plug-in block is rectangular in shape, and the slot is a rectangular groove that matches the plug-in block.

[0009] Preferably, the adjusting component includes a threaded rod disposed on the outer wall of the connecting block, and each pedal has a through hole that slides on the threaded rod. Washers slide on the threaded rods on both sides of the pedal, and hexagonal bolts are threadedly connected to the threaded rods on both sides of the pedal.

[0010] Preferably, the hexagonal bolts are pentagonal in design, and the outer wall of each hexagonal bolt is provided with anti-slip texture.

[0011] Preferably, the gasket has multiple sets of protrusions on the side surface facing the hexagonal bolt, and the protrusions have an anti-slip function.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting a connecting component between the rotating shaft and the pedal, the connecting block is assembled into the limiting groove, and then the spring's restoring force pushes the plug block to reset and slide in the movable chamber and abut against the slot. Then, by pulling the pull rod, the pull rod drives the plug block to slide out of the slot, which can achieve the purpose of quick assembly and disassembly of the pedal. This prevents the fasteners used to connect the pedal and the rotating shaft from being affected by corrosion or rust, which would make the fasteners difficult to rotate and increase the difficulty of disassembling the pedal.

[0014] 2. In this utility model, by setting an adjustment component in the pedal, the pedal slides on the threaded rod through the through hole, allowing the pedal to move on the threaded rod. Then, the hexagonal bolt is rotated on the threaded rod, causing the hexagonal bolt to drive the washer to fit against the surfaces at both ends of the pedal, thereby achieving the purpose of fixing and adjusting the position of the pedal and preventing the user's large feet from easily rubbing against the rotating shaft when stepping on the pedal. Attached Figure Description

[0015] Figure 1 A perspective view of a bicycle pedal crank mechanism is provided for this utility model;

[0016] Figure 2 A front sectional view of a bicycle pedal crank mechanism is provided for this utility model;

[0017] Figure 3 This utility model provides a top sectional view of a partial structure of the connecting component of a bicycle pedal crank mechanism.

[0018] Figure 4 This utility model proposes a bicycle pedal crank mechanism. Figure 3Enlarged view of the structure at point A in the middle.

[0019] Legend: 1. Crank; 2. Shaft; 3. Pedal; 4. Connecting assembly; 41. Limiting groove; 42. Connecting block; 43. Movable chamber; 44. Insertion block; 45. Slot; 46. Pull rod; 47. Spring; 5. Adjusting assembly; 51. Threaded rod; 52. Through hole; 53. Washer; 54. Hex bolt. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a bicycle pedal crank mechanism, including a crank 1, a rotating shaft 2 and a pedal 3. The crank 1 is provided with rotating shafts 2 on both sides, and pedals 3 are provided inside the rotating shafts 2. A connecting component 4 is provided between the pedals 3 and the rotating shafts 2. The pedals 3 are connected to the rotating shafts 2 through the connecting component 4. An adjusting component 5 is provided between the connecting component 4 and the pedals 3. The adjusting component 5 is used to adjust the position of the pedals 3.

[0023] The connecting component 4 includes a limiting groove 41 opened in the rotating shaft 2, and a connecting block 42 sliding in each limiting groove 41. A movable chamber 43 is provided on the outer wall of the rotating shaft 2, and a plug-in block 44 slides in each movable chamber 43 and slides in the rotating shaft 2. A slot 45 is opened in each connecting block 42 corresponding to the inner end surface of the plug-in block 44. A pull rod 46 is provided on the other end surface of the plug-in block 44. A spring 47 is wound on the surface of the pull rod 46. An adjusting component 5 is provided on the side surface of the connecting block 42 away from the crank 1. The adjusting component 5 includes a threaded rod 51 provided on the outer wall of the connecting block 42. A through hole 52 is opened in each pedal 3 and slides on the threaded rod 51. A washer 53 slides on the threaded rod 51 on both sides of the pedal 3. A hexagonal bolt 54 is threadedly connected to the threaded rod 51 on both sides of the pedal 3.

[0024] By using the connecting component 4 between the pivot 2 and the pedal 3, the connecting block 42 is assembled into the limiting groove 41, and then the restoring force of the spring 47 pushes the plug block 44 to slide back in the movable chamber 43 and abut against the slot 45. Then, by pulling the pull rod 46, the plug block 44 is slid out of the slot 45, which achieves the purpose of quick assembly and disassembly of the pedal 3. This prevents the fasteners used to connect the pedal 3 and the pivot 2 from being affected by corrosion or rust, which would make the fasteners difficult to rotate and increase the difficulty of disassembling the pedal 3. By using the adjusting component 5 in the pedal 3, the pedal 3 can slide on the threaded rod 51 through the through hole 52, and then the hexagonal bolt 54 is screwed on the threaded rod 51, so that the hexagonal bolt 54 drives the washer 53 to fit against the two ends of the pedal 3. This achieves the purpose of fixing and adjusting the position of the pedal 3, preventing the user's large feet from rubbing against the pivot 2 when stepping on the pedal 3.

[0025] like Figure 4 As shown, the outer end of the lever 46 is provided with a handle, and the handle is designed in a circular shape, which makes it easy for the user to pull the lever 46 and prevents the user's hands from slipping when pulling the lever 46 due to sweat.

[0026] like Figure 4 As shown, the plug-in block 44 is rectangular in shape, and the slot 45 is a rectangular groove that matches the plug-in block 44. When the plug-in block 44 is slid into the slot 45, the slot 45 and the plug-in block 44 fit together on all four sides, thereby limiting the position of the connecting block 42 and preventing the connecting block 42 from shaking in the limiting groove 41 when the pedal 3 is in use, which would affect the use of the pedal 3.

[0027] like Figure 4 As shown, the hexagonal bolt 54 has a pentagonal design, and the outer wall of the hexagonal bolt 54 is provided with anti-slip texture, which can increase the friction between the user's hand and the hexagonal bolt 54, thereby improving the stability of the user when rotating the hexagonal bolt 54.

[0028] like Figure 4 As shown, the surface of the washer 53 facing the hexagonal bolt 54 is provided with multiple sets of protrusions, and the protrusions have an anti-slip function. When the hexagonal bolt 54 rotates on the threaded rod 51 and squeezes the washer 53, the washer 53 fixes the pedal 3 and limits the hexagonal bolt 54 at the same time, preventing the hexagonal bolt 54 from rotating easily on the threaded rod 51, which would affect the fixing effect of the pedal 3.

[0029] The usage method and working principle of this device are as follows: When in use, first pull the lever 46 away from the rotating shaft 2, so that the lever 46 drives the plug block 44 to slide into the movable chamber 43 and the plug block 44 compresses the spring 47. Then, insert the connecting block 42 into the limiting groove 41 and align the slot 45 with the plug block 44. Then, release the lever 46, and use the restoring force of the spring 47 to push the plug block 44 to reset and slide in the movable chamber 43 and abut against the slot 45. Then, by pulling the lever 46, the lever 46 drives the plug block 44 to slide out of the slot 45, thereby achieving the purpose of quick assembly and disassembly of the pedal 3.

[0030] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A bicycle pedal crank mechanism, comprising a crank (1), a pivot (2), and pedals (3), wherein pivots (2) are provided on both sides of the crank (1), and pedals (3) are provided inside each pivot (2), characterized in that: A connecting assembly (4) is provided between the pedal (3) and the rotating shaft (2). The pedal (3) is connected to the rotating shaft (2) through the connecting assembly (4). An adjusting assembly (5) is provided between the connecting assembly (4) and the pedal (3). The adjusting assembly (5) is used to adjust the position of the pedal (3). The connecting assembly (4) includes a limiting groove (41) opened in the rotating shaft (2). A connecting block (42) slides in the limiting groove (41). A movable part is provided on the outer wall of the rotating shaft (2). The movable chamber (43) has a sliding plug block (44) inside it, and the plug block (44) slides inside the rotating shaft (2). The connecting block (42) corresponding to the inner end surface of the plug block (44) is provided with a slot (45). The other end surface of the plug block (44) is provided with a pull rod (46). The surface of the pull rod (46) is provided with a spring (47). The side surface of the connecting block (42) away from the crank (1) is provided with an adjustment component (5).

2. The bicycle pedal crank mechanism according to claim 1, characterized in that: The outer end surface of the pull rod (46) is provided with a handle, and the handle is designed in a circular shape.

3. A bicycle pedal crank mechanism according to claim 2, characterized in that: The plug block (44) is rectangular in shape, and the slot (45) is a rectangular groove that matches the plug block (44).

4. A bicycle pedal crank mechanism according to claim 3, characterized in that: The adjustment assembly (5) includes a threaded rod (51) disposed on the outer wall of the connecting block (42). The pedal (3) is provided with a through hole (52), which slides on the threaded rod (51). Washers (53) slide on the threaded rods (51) on both sides of the pedal (3). Hex bolts (54) are threadedly connected to the threaded rods (51) on both sides of the pedal (3).

5. A bicycle pedal crank mechanism according to claim 4, characterized in that: The hexagonal bolt (54) is designed in a pentagonal shape, and anti-slip textures are provided on the outer wall of the hexagonal bolt (54).

6. A bicycle pedal crank mechanism according to claim 5, characterized in that: The gasket (53) has multiple sets of protrusions on the side surface facing the hexagonal bolt (54), and the protrusions have an anti-slip function.

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