CN219029670U

CN219029670U - Bicycle crank assembly

Info

Publication number: CN219029670U
Application number: CN202223506954.9U
Authority: CN
Inventors: 姜立亨
Original assignee: Tianjin Lunfeng Sports Technology Co ltd
Current assignee: Tianjin Lunfeng Sports Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-16
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a bicycle crank assembly, which relates to the technical field of bicycles and comprises a crank body, wherein a hollowed strip is arranged on the inner wall of the crank body, a pedal interface is arranged on the inner wall of the crank body, a cylindrical rod is connected with the outer wall of the pedal interface through threads, a pedal is fixedly connected with the outer wall of the cylindrical rod, an anti-slip strip is fixedly connected with the outer wall of the pedal, a threaded hole is arranged on the inner wall of the crank body, and a fastening bolt is connected with the outer wall of the threaded hole through threads. According to the utility model, the crank body, the hollowed-out strip, the pedal interface, the cylindrical rod, the pedal, the anti-slip strip, the threaded hole and the fastening bolt are mutually matched for use, so that the assembly has an anti-slip effect, the anti-slip effect is good, the cylindrical rod and the pedal are assembled through the pedal interface, and the anti-slip strip on the outer wall of the pedal is arranged, so that a user can conveniently slip in the riding process, and the assembly is more practical to a certain extent.

Description

Bicycle crank assembly

Technical Field

The utility model relates to the technical field of bicycles, in particular to a bicycle crank assembly.

Background

The bicycle, also called bicycle or bicycle, is usually a small-sized land vehicle with two wheels, after people ride on the bicycle, the bicycle is powered by pedal, and is a green and environment-friendly transportation tool, and can be used as an environment-friendly transportation tool for riding instead of walking and going out, more and more people use the bicycle as exercise equipment for riding exercise and bicycle play, the bicycle is a sports, such as road bicycle racing, mountain bicycle racing, field bicycle racing, special-effect bicycle racing and the like, the crank is a bicycle fitting, a loose crank always makes clicking sounds, when the crank is checked, the crank is firstly turned to a horizontal position, meanwhile, the cranks on two sides are downwards pressed, then the crank is turned for hundred eighty degrees, the same actions are repeated, if the crank can shake, the crank fixing bolt is fastened, and the crank of a new bicycle needs to be checked frequently.

For example, the Chinese patent publication No. CN214648825U discloses the following technical scheme: the utility model relates to the technical field of cranks, and discloses a bicycle crank assembly, which comprises an axle center, a left Bian Qubing and a right crank. Wherein the left crank comprises a first crank body and a first reinforcing cover; one end of the first crank body is detachably connected with one end of the axle center; the first crank body is provided with a first hollow groove along the length direction; the first reinforcing cover is matched and arranged on the first hollow groove; the right crank comprises a second crank body and a second reinforcing cover; one end of the second crank body is detachably connected with the other end of the axle center; the second crank body is provided with a second hollow groove along the length direction; the second reinforcing cover is matched and arranged on the second hollow groove. The bicycle crank assembly provided by the utility model has the advantages of simple integral structure, light weight design, convenient disassembly and assembly, stable connection and suitability for market popularization, and achieves the aim of improving rigidity.

The following problems exist in the prior art:

1. most of the prior art bicycle crank assemblies are inconvenient to slip during riding by a user when applied, so that the anti-slip effect is poor.

2. Most of the bicycle crank assemblies in the prior art are unreasonable and practical when in use, and are inconvenient to assemble, so that the practicability is poor.

Disclosure of Invention

The present utility model provides a bicycle crank assembly that solves the problems set forth in the background art discussed above.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the bicycle crank assembly comprises a crank body, wherein a hollowed-out strip is arranged on the inner wall of the crank body, and a pedal interface is arranged on the inner wall of the crank body.

The outer wall threaded connection of footboard interface has the cylinder pole, the outer wall fixedly connected with running-board of cylinder pole, the outer wall fixedly connected with antislip strip of running-board.

The inner wall of the crank body is provided with a threaded hole, and the outer wall of the threaded hole is in threaded connection with a fastening bolt.

The technical scheme of the utility model is further improved as follows: the outer wall threaded connection of fastening bolt has the disc, the outer wall fixedly connected with chain wheel of disc, the outer wall threaded connection of chain wheel has the axis, the outer wall threaded connection of axis has the crank arm.

By adopting the technical scheme, the central shaft in the scheme is arranged, so that the arrangement of the assembly is more reasonable.

The technical scheme of the utility model is further improved as follows: the size of the threaded hole is equal to that of the pedal interface, and the threaded hole is symmetrically arranged along the central axis of the crank body.

By adopting the technical scheme, the threaded holes in the scheme are arranged, so that the fastening bolts are aligned with the threaded holes, and therefore, the pedal is assembled conveniently due to the arrangement of the pedal interface.

The technical scheme of the utility model is further improved as follows: the disc is matched with the chain disc in size, and the diameter of the chain disc is larger than that of the disc.

By adopting the technical scheme, the chain plate in the scheme is arranged, so that the assembly is reasonable and practical.

The technical scheme of the utility model is further improved as follows: the structure of the middle shaft and the chain plate is mutually matched, and the middle shaft is parallel to the chain plate.

By adopting the technical scheme, the middle shaft and the chain plate in the scheme are reasonable in structure and are matched with each other for use.

The technical scheme of the utility model is further improved as follows: the structure of fastening bolt and screw hole mutually agrees, fastening bolt runs through in the screw hole.

By adopting the technical scheme, the fastening bolt in the scheme is assembled through the threaded hole.

The technical scheme of the utility model is further improved as follows: the two sides of the pedal plate are fixedly connected with anti-slip strips, and the anti-slip strips are arranged along the central axis pair of the pedal plate.

By adopting the technical scheme, the pedal plate and the anti-skid strip in the scheme are matched with each other for use, so that a rider can conveniently conduct anti-skid in the riding process.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides a bicycle crank assembly, which is formed by mutually matching a crank body, a hollowed strip, a pedal interface, a cylindrical rod, a pedal, an anti-slip strip, a threaded hole and a fastening bolt, so that the assembly has an anti-slip effect, the anti-slip effect is good, the cylindrical rod and the pedal are assembled through the pedal interface, and the anti-slip strip on the outer wall of the pedal is arranged, so that a user can conveniently slip in the riding process, and the assembly is more practical to a certain extent.

2. The utility model provides a bicycle crank assembly, which adopts the mutual matching of a disc, a chain disc, a middle shaft and a crank arm, wherein the middle shaft is used for connecting the crank arm and a rotating part of a crank body, so that the assembly is more reasonable and practical, a fastening bolt is aligned with a threaded hole to assemble the crank body and the disc, the assembly is convenient to assemble, the structure is compact, the practicability is strong, and the assembly is more reasonable and efficient to a certain extent.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a schematic view of a threaded hole connection structure of the present utility model;

FIG. 3 is a schematic view of a bottom bracket attachment structure according to the present utility model;

FIG. 4 is an enlarged view of FIG. 1A in accordance with the present utility model;

fig. 5 is an enlarged view of fig. 3B in accordance with the present utility model.

In the figure: 1. a crank body; 2. hollow long strips; 3. a pedal interface; 4. a cylindrical rod; 5. a foot pedal; 6. an anti-slip strip; 7. a threaded hole; 8. a fastening bolt; 9. a disc; 10. a chain plate; 11. a center shaft; 12. a crank arm.

Detailed Description

The utility model is further illustrated by the following examples:

example 1

As shown in fig. 1-5, the utility model provides a bicycle crank assembly, which comprises a crank body 1, wherein a hollowed-out strip 2 is arranged on the inner wall of the crank body 1, and a pedal interface 3 is arranged on the inner wall of the crank body 1.

The outer wall threaded connection of footboard interface 3 has cylinder pole 4, and the outer wall fixedly connected with running-board 5 of cylinder pole 4, the outer wall fixedly connected with antislip strip 6 of running-board 5.

The inner wall of the crank body 1 is provided with a threaded hole 7, and the outer wall of the threaded hole 7 is in threaded connection with a fastening bolt 8.

In this embodiment, adopt crank body 1, fretwork rectangular 2, footboard interface 3, cylindrical bar 4, running-board 5, antislip strip 6, screw hole 7 and fastening bolt 8's mutually supporting to use for the subassembly has skid-proof effect, makes skid-proof effectual, assembles cylindrical bar 4 and running-board 5 through footboard interface 3, and the setting of antislip strip 6 of running-board 5 outer wall, makes the user be convenient for skid-proof at the in-process of riding, makes the subassembly more practical to a certain extent.

Example 2

As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the outer wall thread of the fastening bolt 8 is connected with a disc 9, the outer wall of the disc 9 is fixedly connected with a chain wheel 10, the outer wall thread of the chain wheel 10 is connected with a center shaft 11, and the outer wall thread of the center shaft 11 is connected with a crank arm 12.

In this embodiment, the arrangement of the middle shaft 11 in this solution makes the arrangement of the assembly more reasonable.

In this embodiment, adopt disc 9, chain wheel 10, axis 11 and crank arm 12's mutually supporting to use, wherein axis 11 is used for connecting crank arm 12 and crank body 1's rotating member for the setting of subassembly is more reasonable practical, and fastening bolt 8 aligns screw hole 7 and assembles crank body 1 and disc 9, and this subassembly is convenient for assemble, compact structure, and the practicality is strong, makes the subassembly more reasonable high-efficient to a certain extent.

Example 3

As shown in fig. 1-5, on the basis of embodiment 1 and embodiment 2, the present utility model provides a technical solution: preferably, the threaded holes 7 are equal in size to the pedal interface 3, and the threaded holes 7 are symmetrically arranged along the central axis of the crank body 1.

In this embodiment, the threaded holes 7 in this solution are arranged so that the fastening bolts 8 are aligned with the threaded holes 7 for assembly, while the pedal interface 3 is arranged so that the pedal 5 is assembled.

Preferably, the disc 9 and the chain disc 10 are sized to match each other, the diameter of the chain disc 10 being larger than the disc 9.

In this embodiment, the arrangement of the chain plate 10 in this solution makes the assembly reasonably practical.

Preferably, the bottom bracket 11 is mutually matched with the structure of the chain plate 10, and the bottom bracket 11 is parallel to the chain plate 10.

In this embodiment, the bottom bracket 11 and the chain plate 10 in this embodiment are rational in structure and are used in cooperation with each other.

Preferably, the structure of the fastening bolt 8 and the screw hole 7 is engaged with each other, and the fastening bolt 8 penetrates the screw hole 7.

In the present embodiment, the fastening bolts 8 in this embodiment are assembled through the screw holes 7.

Preferably, the two sides of the pedal plate 5 are fixedly connected with anti-slip strips 6, and the anti-slip strips 6 are arranged along the central axis pair of the pedal plate 5.

In the embodiment, the pedal 5 and the anti-slip strip 6 in the scheme are matched with each other for use, so that a rider can conveniently conduct anti-slip during riding.

The following specifically describes the principle of operation of the bicycle crank assembly.

As shown in fig. 1-5, a user assembles the cylindrical rod 4 and the pedal 5 through the pedal interface 3, and the anti-slip strip 6 on the outer wall of the pedal 5 is arranged, so that the rider can conveniently slip in the riding process, the fastening bolt 8 aligns with the threaded hole 7 to assemble the crank body 1 with the disc 9, and the assembly is convenient to assemble, compact in structure and high in practicability.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. Bicycle crank assembly, including crank body (1), its characterized in that: the inner wall of the crank body (1) is provided with a hollowed-out strip (2), and the inner wall of the crank body (1) is provided with a pedal interface (3);

the outer wall of the pedal interface (3) is in threaded connection with a cylindrical rod (4), the outer wall of the cylindrical rod (4) is fixedly connected with a pedal (5), the outer wall of the pedal (5) is fixedly connected with an anti-slip strip (6),

the inner wall of the crank body (1) is provided with a threaded hole (7), and the outer wall of the threaded hole (7) is in threaded connection with a fastening bolt (8).

2. The bicycle crank assembly of claim 1, wherein: the outer wall threaded connection of fastening bolt (8) has disc (9), the outer wall fixedly connected with chain wheel (10) of disc (9), the outer wall threaded connection of chain wheel (10) has axis (11), the outer wall threaded connection of axis (11) has crank arm (12).

3. The bicycle crank assembly of claim 1, wherein: the size of the threaded hole (7) is equal to that of the pedal interface (3), and the threaded hole (7) is symmetrically arranged along the central axis of the crank body (1).

4. The bicycle crank assembly of claim 2, wherein: the size of the disc (9) is matched with that of the chain disc (10), and the diameter of the chain disc (10) is larger than that of the disc (9).

5. The bicycle crank assembly of claim 2, wherein: the middle shaft (11) is mutually matched with the structure of the chain plate (10), and the middle shaft (11) is parallel to the chain plate (10).

6. The bicycle crank assembly of claim 1, wherein: the structure of the fastening bolt (8) is mutually matched with that of the threaded hole (7), and the fastening bolt (8) penetrates through the threaded hole (7).

7. The bicycle crank assembly of claim 1, wherein: the two sides of the pedal plate (5) are fixedly connected with anti-slip strips (6), and the anti-slip strips (6) are arranged along the central axis pair of the pedal plate (5).