Abstract: An angle adjusting mechanism includes a first bracket and a second bracket hinged to each other. The second bracket is provided with two arc-shaped position-limiting slots, and a set of position-limiting holes is arranged in the position-limiting slots. A diameter of the position-limiting holes is larger than a slot diameter of the position-limiting slot. A bolt passes through the first bracket and the position-limiting slots and is movable along the first bracket and the position-limiting slots. An end portion of the bolt is provided with an adjusting segment and a position-limiting segment. A diameter of the adjusting segment is smaller than a diameter of the position-limiting segment. The adjusting segment and the position-limiting slot are engaged to adjust an angle of the second bracket relative to the first bracket. The position-limiting segment and the position-limiting holes are engaged to fix the first bracket and the second bracket after adjustment.

Abstract: An angle adjusting mechanism includes a first bracket and a second bracket hinged to each other. The second bracket is provided with two arc-shaped position-limiting slots, and a set of position-limiting holes is arranged in the position-limiting slots. A diameter of the position-limiting holes is larger than a slot diameter of the position-limiting slot. A bolt passes through the first bracket and the position-limiting slots and is movable along the first bracket and the position-limiting slots. An end portion of the bolt is provided with an adjusting segment and a position-limiting segment. A diameter of the adjusting segment is smaller than a diameter of the position-limiting segment. The adjusting segment and the position-limiting slot are engaged to adjust an angle of the second bracket relative to the first bracket. The position-limiting segment and the position-limiting holes are engaged to fix the first bracket and the second bracket after adjustment.

Abstract: A dual function stationary bike comprising a central body, a shift mechanism, a bidirectional resistance adjustment mechanism and a screen adjustment mechanism is provided. The components of the central body include those that are coordinated to comply with the purpose of a stationary bike: the base components, the handlebar components, the seat components, the pedals components and the resistance assembly. The shift mechanism is installed between the components of the base and of the handlebar, regulates and fixes the relative position between the components of the handlebar and of the base to carry out the two different functions of the stationary bike.