Magnetoresistor for fitness equipment

Abstract

The invention relates to the field of fitness equipment, in particular to a magnetoresistor for fitness equipment, which comprises a mounting seat, an electromagnetic wheel assembly and an electromagnet, the electromagnetic wheel assembly and the electromagnet are arranged on the mounting seat, the electromagnetic wheel assembly comprises a conductive wheel and a magnetic conducting part, the conductive wheel comprises a wheel disc and a brake edge which is coaxially arranged with the conductive wheel and is perpendicular to the disc surface of the wheel disc, the electromagnet and the magnetic conducting part are arranged on the two sides of the brake edge respectively and are oppositely arranged, a channel for the brake edge to pass through is arranged between the electromagnet and the magnetic conducting part, and an anti-contact gap is formed between the brake edge and the electromagnet and between the brake edge and the magnetic conducting part. Through the arrangement of the electromagnetic wheel assembly, electric conduction and magnetic conduction are separated, the conductive wheel does not conduct magnetism and only conducts electricity, the magnetic conducting part can conduct magnetism and electricity, when the conductive wheel rotates, a magnetizer does not rotate along with the conductive wheel, the magnetizer and the electromagnet are detachably and fixedly arranged on an installation base to form a stable magnetic field, and the conductive wheel rotates to cut magnetic lines of force to generate Lorentz force so as to form magnetic resistance.

Description

technical field [0001] The invention relates to the field of fitness equipment, in particular to a magnetoresistor for fitness equipment. Background technique [0002] Existing magnetoresistors on fitness equipment use electromagnets to cooperate with solid disc iron blocks to ensure sufficient magnetic permeability and resistance. E-type electromagnets generate open-loop magnetic fields, and discs replace horizontal irons to close the magnetic field. During rotation, a Lorentz force is generated and an electric current is generated in the disc. This is also a commonly used technology in the market. In order to achieve higher magnetic permeability and magnetic resistance, low-carbon steel is generally used to make a heavier solid circular electromagnetic wheel, which not only costs high, but also causes the electromagnetic wheel itself to be too heavy. There are often some reciprocating equipment on the fitness equipment that require the use of magnetic resistors, such as ...

AI Technical Summary

Problems solved by technology

In order to achieve higher magnetic permeability and magnetic resistance, low carbon steel is generally used to make a heavier solid circular electromagnetic wheel, which not only costs high, but also causes the electromagnetic wheel itself to be too heavy

There are often some reciprocating equipment on the fitness equipment that require the use of magnetic resistors, such as rowing machines, exercise bikes and elliptical machines. In the process of pulling, there is often a phenomenon that the resistance in the front section is large, but the inertia of the electromagnetic wheel in the rear section causes emptying or stepping on the air or the force is significantly reduced. The user feels poor and the safety is not good when using. Mutantly unstable force causes body part to slam into gym equipment

In addition, there will be a large deviation between the marked power of the equipment and the measured power, and it is impossible to accurately calculate the physical exertion of the user.

At the same time, due to the heavy weight of the electromagnetic wheel, in order to ensure the stability during use, the mounting seat of the electromagnetic wheel needs to be installed symmetrically on both sides to erect the electromagnetic wheel, resulting in many matching parts and complicated structure, which further increases the cost.

In addition, due to the large inertial force of the existing electromagnetic wheel, the electromagnetic wheel will rotate for a while when the user stops moving, and it is impossible to realize that the equipment and the user stop synchronously as much as possible, so it is often necessary to install some braking devices.

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