A bicycle pedal arm assembly and a bicycle

Abstract

This utility model discloses a bicycle pedal arm assembly and a bicycle. The bicycle pedal arm assembly includes an L-shaped pedal arm and a traction bracket. The traction bracket is slidably mounted on the L-shaped pedal arm. The traction bracket includes a guide plate and a Z-shaped mounting plate. The inner cavity of the Z-shaped mounting plate mates with the long side of the L-shaped pedal arm. The guide plate and the Z-shaped mounting plate are connected by mounting bolts and clamping nuts. The front side of the guide plate has an arc-shaped transition groove for guiding the steel cable. One end of the L-shaped pedal arm has a bearing mounting sleeve, inside which is a pedal arm bearing. The L-shaped pedal arm is connected to the bicycle frame by a pedal fixing bolt passing through the pedal arm bearing. The outer side of the other end of the L-shaped pedal arm has a pedal mounting sleeve. This utility model designs the pedal arm in an L-shape and the irregular bracket in a guide plate + Z-shaped mounting plate design, which allows for quick tightening or loosening of the drive steel cable and the adjustment steel cable, providing better pedaling force transmission efficiency and enhancing structural stability.

Description

Technical Field

[0001] This utility model relates to the field of bicycles, specifically to a bicycle pedal arm assembly and a bicycle. Background Technology

[0002] A bicycle is a two-wheeled mode of transportation, consisting of a frame, two wheels, two pedals, and a chain. It can be ridden manually, requiring no fuel, making it a green and healthy mode of transportation. Bicycles have wide applications in transportation, sports, and recreation, and are often referred to as "a crystallization of human ingenuity." There are many types of bicycles, including touring bikes, road bikes, mountain bikes, and folding bikes.

[0003] Patent publication number CN 219565380 U discloses a variable torque bicycle with steel wire rope traction. A left-shaped bracket 16 and a right-shaped bracket 20 are respectively installed on the left pedal linkage 17 and the right pedal linkage 21. The left-shaped bracket 16 and the right-shaped bracket 20 have identical structures. The right-shaped bracket 20 includes a bracket body 201, one side of which has an arc-shaped transition groove 202 for connecting and transitioning the drive steel wire rope 13. By setting the irregular bracket and configuring the arc-shaped transition groove 202, the drive steel wire rope 13 can be prevented from tripping during pedaling, thus providing protection. Furthermore, the traction angle can be changed, reducing power loss. The positions of the left-shaped bracket 16 and the right-shaped bracket 20 are adjustable. Sliding sleeves 22 are provided on the connecting rod 17 and the right pedal connecting rod 21 respectively. The left irregular bracket 16 and the right irregular bracket 20 are respectively fixedly installed on the corresponding sliding sleeves 22. The sliding sleeve displacement adjustment mechanism is also included. The sliding sleeve displacement adjustment mechanism includes a rope tensioner 11 and an adjusting wire rope 14. The middle section of the adjusting wire rope 14 is wound on the rope tensioner 11. The rope tensioner 11 is installed on the frame 3. The two ends of the adjusting wire rope 14 pass through the axle of the upper transition fixed pulley 10 and the fisheye joint guide groove 23 at one end of the pedal connecting rod respectively, and then connect to the sliding sleeve 22. By adjusting the rope tensioner 11, the length of the adjusting wire rope 14 can be adjusted, thereby causing the sliding sleeve to drive the irregular bracket to move.

[0004] However, the bicycle's pedal linkage is a straight linkage, and there is room for improvement in the efficiency of pedaling force transmission. The combination of the irregular bracket and the sliding sleeve results in weak structural stability, which may lead to unstable traction when pedaling. Summary of the Invention

[0005] The purpose of this utility model is to provide a bicycle pedal arm assembly and a bicycle that overcomes the shortcomings of the prior art.

[0006] The technical solution of this utility model:

[0007] A bicycle pedal arm assembly includes an L-shaped pedal arm and a traction bracket. The traction bracket is slidably mounted on the L-shaped pedal arm. The traction bracket includes a guide plate and a Z-shaped mounting plate. The inner cavity of the Z-shaped mounting plate mates with the long side of the L-shaped pedal arm. The guide plate and the Z-shaped mounting plate are connected by mounting bolts and clamping nuts. The front side of the guide plate is provided with an arc-shaped transition groove for guiding the wire rope.

[0008] One end of the L-shaped pedal arm is provided with a bearing mounting sleeve, and the bearing mounting sleeve contains a pedal arm bearing; the other end of the L-shaped pedal arm is provided with a pedal mounting sleeve on the outside.

[0009] Furthermore, an adjustable steel wire rope transition pulley is installed on the inner side of the other end of the L-shaped foot arm via a pulley bracket.

[0010] Furthermore, the L-shaped pedal arm has a double stop bolt with the open end facing backward on the inner side of the right-angle bend.

[0011] Furthermore, reinforcing ribs are provided on both sides of the middle of the zigzag mounting plate.

[0012] This utility model also provides a bicycle, including the above-mentioned bicycle pedal arm assembly.

[0013] Compared to CN 219565380 U, this utility model designs the pedal arm as an L-shape and the irregular bracket as a guide plate + a Z-shaped mounting plate. The inner cavity of the Z-shaped mounting plate matches the long side of the L-shaped pedal arm. The guide plate and the Z-shaped mounting plate are connected by mounting bolts and clamping nuts. The clamping nuts can be used to quickly tighten or loosen the drive wire rope and the adjustment wire rope, which can provide better pedaling force transmission efficiency and enhance structural stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the traction bracket in a preferred embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model installed on a bicycle;

[0017] Figure 4 This is another schematic diagram of the present invention installed on a bicycle;

[0018] In the diagram: L-shaped pedal arm 1, guide plate 2, double stop bolts 3, pedal fixing bolt 4, bearing mounting sleeve 5, pedal arm bearing 6, mounting bolt 7, pedal mounting sleeve 8, arc-shaped transition groove 9, Z-shaped mounting plate 10, pulley bracket 11, adjusting wire rope transition pulley 12, clamping nut 13, reinforcing rib 14. Detailed Implementation

[0019] The present invention can be further described through the following embodiments; however, the scope of the present invention is not limited to the following embodiments. It should be understood that the embodiments described herein are disclosed by way of illustration only, and the present invention is not intended to limit its scope to the details of the construction and arrangement of the components described below or illustrated in the figures. Furthermore, in describing preferred embodiments, specific terminology will be used for clarity. It should be understood that each specific term includes all technical equivalents that operate in a similar manner to achieve a similar purpose.

[0020] Taking the left pedal arm assembly as an example, the specific implementation is as follows:

[0021] Example: Please refer to Figure 1 and Figure 2 As shown, it includes an L-shaped foot arm 1 and a traction bracket. The traction bracket is slidably mounted on the L-shaped foot arm 1. The traction bracket includes a guide plate 2 and a Z-shaped mounting plate 10. The inner cavity of the Z-shaped mounting plate 10 is engaged with the long side of the L-shaped foot arm 1. The guide plate 2 and the Z-shaped mounting plate 10 are connected by mounting bolts 7 and clamping nuts 13. The traction bracket can slide on the long side of the L-shaped foot arm 1, thereby changing the torque to achieve the speed change function. The front side of the guide plate 2 is provided with an arc-shaped transition groove 9 for guiding the wire rope.

[0022] One end of the L-shaped pedal arm 1 is provided with a bearing mounting sleeve 5, and a pedal arm bearing 6 is provided inside the bearing mounting sleeve 5. The L-shaped pedal arm 1 is connected to the bicycle frame through the pedal fixing bolt 4 passing through the pedal arm bearing 6; the other end of the L-shaped pedal arm 1 is provided with a pedal mounting sleeve 8.

[0023] In this embodiment, an adjustable steel wire rope transition pulley 12 is installed on the inner side of the other end of the L-shaped foot arm 1 via a pulley bracket 11.

[0024] In this embodiment, the L-shaped foot arm 1 has a double stop bolt 3 with the open end facing backward on the inner side of the right angle bend. The double stop bolt 3 can play the role of positioning the wire rope sleeve.

[0025] In this embodiment, reinforcing ribs 14 are provided on both sides of the middle of the Z-shaped mounting plate 10.

[0026] See Figure 3 and Figure 4 As shown, this utility model also provides a bicycle, including the above-mentioned bicycle pedal arm assembly.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bicycle pedal arm assembly, characterized in that, The device includes an L-shaped foot arm (1) and a traction bracket. The L-shaped foot arm (1) is slidably provided with a traction bracket. The traction bracket includes a guide plate (2) and a Z-shaped mounting plate (10). The inner cavity of the Z-shaped mounting plate (10) is fitted with the long side of the L-shaped foot arm (1). The guide plate (2) and the Z-shaped mounting plate (10) are connected by mounting bolts (7) and clamping nuts (13). The front side of the guide plate (2) is provided with an arc-shaped transition groove (9) for guiding the wire rope. One end of the L-shaped pedal arm (1) is provided with a bearing mounting sleeve (5), and a pedal arm bearing (6) is provided inside the bearing mounting sleeve (5); the other end of the L-shaped pedal arm (1) is provided with a pedal mounting sleeve (8).

2. The bicycle pedal arm assembly according to claim 1, characterized in that, The inner side of the other end of the L-shaped foot arm (1) is equipped with an adjustable wire rope transition pulley (12) via a pulley bracket (11).

3. The bicycle pedal arm assembly according to claim 1, characterized in that, The L-shaped footrest (1) has a double stop bolt (3) with the open end facing backward on the inside of the right angle bend.

4. The bicycle pedal arm assembly according to claim 1, characterized in that, The middle two sides of the zigzag mounting plate (10) are provided with reinforcing ribs (14).

5. A bicycle, characterized in that, Includes the bicycle pedal arm assembly as described in any one of claims 1-4.

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