US20230330475A1

US20230330475A1 - Crank for fitness equipment with self-locking mechanism

Info

Publication number: US20230330475A1
Application number: US17/722,411
Authority: US
Inventors: Han-Sung Lin
Original assignee: XIAMEN EVERE SPORTS GOODS CO Ltd
Current assignee: XIAMEN EVERE SPORTS GOODS CO Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2023-10-19

Abstract

A crank for fitness equipment with a self-locking mechanism is provided. A crank body is provided with an installation hole, an internal thread is disposed in the installation hole, and an anti-loosening ring embedding portion is disposed at an outer end of the installation hole. An anti-loosening ring is tightly fitted to the anti-loosening ring embedding portion. A screw rod of a pedal is screwed into the installation hole of the crank body, and passes through the anti-loosening ring tightly fitted in the installation hole.

Description

BACKGROUND

Technical Field

The disclosure relates to a fitness equipment, and in particular to a crank structure of an exercise bike and a spin bike. The crank structure has the function of locking a pedal and a crank.

Description of Related Art

Currently, as shown in FIG. 1 and FIG. 2 , in a locking structure of a pedal 10 and a crank 20 of an exercise bike and a spin bike on the market, the pedal 10 has a screw rod 11, and the crank 20 has a screw hole 21. The screw rod 11 is screwed into the screw hole 21 and extends out of the screw hole 21. On the outside of the crank 20, a locking nut 30 is screwed to a portion of the screw rod 11 extending out of the screw hole 21 to lock the pedal 10 onto the crank 20. The issue with the locking structure is that the crank 20 does not have the function of a self-locking structure, and the locking nut 30 needs to be screwed to the portion of the screw rod 11 of the pedal 10 extending out of the crank 20 on the outside of the crank 20, which not only occupies a large space, but also has a complicated appearance and structure, and the assembly efficiency of the pedal 10 and the crank 20 is low, and the locking function of the pedal 10 and the crank 20 is not ideal.

SUMMARY

The disclosure provides a crank for fitness equipment with a self-locking mechanism, which does not require additional locking of an anti-loosening nut, solves the issue of difficulty in assembling a pedal and a crank through a simple structure, is easier to operate, and ensures stable locking between the pedal and the crank; and reduces the space occupied by the pedal and the crank after assembly, so that the appearance of the product is neater, thereby enhancing the good experience of the user for the product.
In order to achieve the above objective, the disclosure adopts the following technical solutions.

- According to an embodiment of the disclosure, a crank for fitness equipment with a self-locking mechanism includes a crank body, an anti-loosening ring and a pedal. The crank body is provided with an installation hole, wherein an internal thread is disposed in the installation hole, and an anti-loosening ring embedding portion is disposed at an outer end of the installation hole. The anti-loosening ring is tightly fitted to the anti-loosening ring embedding portion. The pedal includes a screw rod. The screw rod is screwed into the installation hole of the crank body, and passes through the anti-loosening ring tightly fitted in the installation hole.

In the crank for fitness equipment with the self-locking mechanism according to an embodiment of the disclosure, the anti-loosening ring is a metal anti-loosening ring or a plastic anti-loosening ring.
In the crank for fitness equipment with the self-locking mechanism according to an embodiment of the disclosure, the metal anti-loosening ring is riveted to the anti-loosening ring embedding portion in the installation hole of the crank body.
Compared with the prior art, the technical solutions provided by the disclosure has the following beneficial effects.
Firstly, the crank for fitness equipment with the self-locking mechanism of the disclosure adopts the anti-loosening ring built into the installation hole of the crank body to tighten the screw rod passing through the anti-loosening ring, thereby locking the pedal onto the crank to prevent loosening.
Secondly, the screw rod of the disclosure passes through the anti-loosening ring and is automatically tightened by the anti-loosening ring, so that the pedal can be automatically locked onto the crank without the need for an external locking nut, which is convenient to operate and greatly reduces the assembly difficulty to achieve easy assembly; and the anti-loosening ring fastened in the crank can further improve the locking effect of the crank and the pedal.
Thirdly, the anti-loosening ring of the disclosure is built into the crank, which occupies less space to save more space, and enables the appearance of the crank and the pedal after assembly to be neater, thereby enhancing the good experience of the user for the product.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described here are used to provide a further understanding of the disclosure and constitute a part of the disclosure. The exemplary embodiments of the disclosure and the descriptions thereof are used to explain the disclosure and do not constitute any improper limitation to the disclosure.

FIG. 1 is a schematic diagram 1 of a locking structure of a pedal and a crank of an exercise bike and a spin bike in the prior art.

FIG. 2 is an exploded view of FIG. 1 .

FIG. 3 is a three-dimensional structural schematic diagram of a crank and a pedal after assembly according to the disclosure.

FIG. 4 is a cross-sectional structural schematic diagram of the crank and the pedal after assembly according to the disclosure.

FIG. 5 is a three-dimensional exploded structural schematic diagram of a crank for fitness equipment with a self-locking mechanism according to the disclosure.

FIG. 6 is an A-A cross-sectional structural schematic diagram of FIG. 5 .

FIG. 7 is a main structural schematic diagram of the crank for fitness equipment with the self-locking mechanism according to the disclosure.

FIG. 8 is a B-B cross-sectional structural schematic diagram of FIG. 7 .

FIG. 9 is an enlarged structural schematic diagram of a portion K of FIG. 8 .

DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS

In order for the technical issues, technical solutions, and beneficial effects of the disclosure to be clearer and more comprehensible, the disclosure will be further described in detail below with reference to the drawings and the embodiments. It should be understood that the specific embodiments described herein are only used to explain the disclosure and are not used to limit the disclosure.
In the claims, the specification, and the above drawings of the disclosure, unless otherwise clearly defined, terms such as “first”, “second”, or “third” are used to distinguish different objects, rather than to describe any specific order.
In the claims, the specification, and the above drawings of the disclosure, unless otherwise clearly defined, terms indicating orientations or positional relationships, such as “center”, “lateral”, “longitudinal”, “horizontal”, “vertical”, “top”, “bottom”, “inside”, “outside”, “up”, “down”, “front”, “rear”, “left”, “right”, “clockwise”, and “counterclockwise”, are based on the orientation and the positional relationship shown in the drawings, and are only for the convenience of describing the disclosure and simplifying the description, rather than indicating or implying that an indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so the terms should not be construed as limiting the specific protection scope of the disclosure.
In the claims, the description and the drawings of the disclosure, unless otherwise explicitly defined, if the term “fixed connection” or “fixedly connected” is used, it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-removable fixed connection, removably fixed connection, connected as a whole, and fixed connection through other devices or components.
In the claims, the specification, and the above drawings of the disclosure, the terms “including” and “having” and the variations thereof refer to “containing but not limited to”.
In conjunction with FIG. 3 to FIG. 9 , a crank for fitness equipment with a self-locking mechanism of the disclosure is described, which includes a crank body 100 and a pedal 200, and further includes an anti-loosening ring 300.
The crank body 100 of the disclosure is provided with an installation hole 110, an internal thread 111 is disposed in the installation hole 110, and an anti-loosening ring embedding portion 112 is disposed at an outer end of the installation hole 110.
The anti-loosening ring 300 of the disclosure is tightly fitted to the anti-loosening ring embedding portion 112 in the installation hole 110 of the crank body 100. The anti-loosening ring 300 is fastened in the crank body 100, which further enhances the locking effect of the crank body 100 and the pedal 200, and the anti-loosening ring 300 is built into the crank body 100, which occupies a small space, and the overall appearance is neater after assembling the crank body 100 and the pedal 200, which further enhances the good experience of the user for the product.
The anti-loosening ring 300 may be a metal anti-loosening ring or a plastic anti-loosening ring. The metal anti-loosening ring is riveted to the anti-loosening ring embedding portion 112 in the installation hole 110 of the crank body 100.
The pedal 200 of the disclosure includes a pedal body 210 and a screw rod 220. One end of the screw rod 220 is fixedly connected to the pedal body 210, and the other end is screwed into the installation hole 110 of the crank body 100 and passes through the anti-loosening ring 300 tightly fitted in the installation hole 110, so that the anti-loosening ring 300 tightens the screw rod 220 to prevent loosening. The disclosure can automatically lock the pedal 200 onto the crank body 100 without the need for an external locking nut, which is not only easy to operate, but also greatly reduces the difficulty of assembly, and ensures stable locking between the pedal 200 and the crank body 100.
During installation, firstly, the anti-loosening ring 300 is tightly fitted to the anti-loosening ring embedding portion 112 installed in the installation hole 110 of the crank body 100. Then, the screw rod 220 of the pedal 200 is screwed into the installation hole 110 until the screw rod 220 passes through the anti-loosening ring 300, so that the self-locking assembly of the pedal and the crank can be completed to achieve easy assembly.
The foregoing description shows and describes the preferred embodiments of the disclosure. As previously mentioned, it should be understood that the disclosure is not limited to the form disclosed herein, and should not be regarded as an exclusion of other embodiments, but may be used in various other combinations, modifications, and environments, and can be modified within the scope of the inventive concept described herein through the above teachings or skill or knowledge in the related art. However, modifications and changes made by persons skilled in the art do not depart from the spirit and scope of the disclosure, and should fall within the protection scope of the appended claims of the disclosure.

Claims

What is claimed is:

1. A crank for fitness equipment with a self-locking mechanism, comprising:

a crank body, provided with an installation hole, wherein an internal thread is provided in the installation hole, and an anti-loosening ring embedding portion is provided at an outer end of the installation hole;

an anti-loosening ring, tightly fitted to the anti-loosening ring embedding portion; and

a pedal, (comprises a screw rod, wherein the screw rod s screwed into the installation hole of the crank body, and passes through the anti-loosening ring tightly fitted in the installation hole.

2. The crank for fitness equipment with the self-locking mechanism according to claim 1, wherein the anti-loosening ring is a metal anti-loosening ring or a plastic anti-loosening ring.

3. The crank for fitness equipment with the self-locking mechanism according to claim 2, wherein the metal anti-loosening ring is riveted to the anti-loosening ring embedding portion in the installation hole of the crank body.