Abstract: Provided is a resistance device of a fitness machine comprising a wind drag unit and a magnetic resistance unit. The wind drag unit includes an air volume adjusting disc. The magnetic resistance unit includes a guide rail disc, a metal ring sheet, at least one magnetic seat, and at least one guide post. The guide rail disc has a guide disc rail through which the guide post penetrates. The magnetic seat is used to generate magnetic resistance with the metal ring sheet, and the magnetic seat has a magnetic seat rail. The guide post is connected to the air volume adjusting disc, penetrates through the guide disc rail, and extends into the magnetic seat rail. The guide post moves in the magnetic seat rail with rotation of the air volume adjusting disc to drive the magnetic seat to pivotally rotate relative to the guide rail disc.

Abstract: The present disclosure discloses an exercise bike capable of folding and changing at multiple angles. The exercise bike includes a base unit, a stand unit pivotally connected to a front end of the base unit, and a first resistance unit and a second resistance unit arranged on the stand unit and suitable for providing resistance for limbs when moving. The stand unit includes a lower riser that rotates in a first angle range relative to the base unit, and an upper riser that rotates in a second angle range relative to the lower riser.

Abstract: A foldable treadmill includes a chassis, a running platform, a dashboard, a dashboard bracket and two support rods. Each of two sides of a front portion of the chassis is pivotally connected with a pin shaft. The two pin shafts are parallel to each other. An end of each pin shaft is fixedly connected with a hook, and hook ends of the two hooks can be clamped into clamp positioning slots on the two support rods, respectively, with rotation of the two support rods. The two pin shafts are driven to rotate or reset synchronously through a linkage mechanism so that the two pin shafts drive the hook ends of the hooks to be separated from or clamped into the clamp positioning slots, respectively.

Abstract: A trampoline with hanging seat units that allows elastic ropes to be mounted easily, comprises a frame, leg tubes, a bouncing unit, hanging seat units and elastic rope rings. The bouncing unit is hung on the frame and comprises a piece of bouncing cloth and connection belts. The hanging seat units are connected with the connection belts and each comprises a body, a through groove penetrating through the body, a connection body, an extension section, and a clamping and abutting section extending towards the bouncing cloth. The body, the extension section and the clamping and abutting section of each hanging seat unit define a clamping space. Each connection belt penetrates through the corresponding through groove. The bouncing unit and hanging seat units are connected through the elastic rope rings. The ends of each elastic rope ring are arranged in the corresponding connection belt and clamping space in a sleeved mode.

Abstract: An adjustment bracket structure for a front upright of an exercise bicycle comprises a bicycle frame and the front upright, wherein a supporting component extending towards the front upright is fixed to the bicycle frame, and the lower end of the front upright is pivoted to the supporting component through a rotary shaft; a bracket component capable of being clamped on the supporting component is arranged on the front upright, and bracket parts matched with the bracket component are arranged on the supporting component in the swinging direction of the front upright. The front upright is angle-adjustable, thereby convenient for users with different heights and arm lengths. The bracket component is of strength-saving structure and utilizes the lever principle, thereby being more convenient to operate. All components are structurally reliable and connected firmly and stably, and thus more convenient to use on the premise of guaranteeing safety and stability.