Bike trainer

A bike trainer comprising:

• a base seat unit including a first seat body that extends lengthwise in a left-right direction, a second seat body that is connected to said first seat body in a front-rear direction that is perpendicular to the left-right direction, and an axle member that has two opposite ends, that is disposed in said second seat body, that extends away from said second seat body in the front-rear direction along an axis, and that is rotatable relative to said second seat body in an anti-clockwise direction or a clockwise direction;
• a swing member including a main body that is non-rotatably connected to one of said opposite ends of said axle member and that is located in said first seat body at a position spaced apart from an inner surface of said first seat body in a top-bottom direction that is perpendicular to the left-right direction and the front-rear direction, a first wing portion that connects said main body and extends away therefrom in the left-right direction, and that is spaced apart from said inner surface of said first seat body in the top-bottom direction, and a second wing portion that connects to said main body and extends therefrom in the left-right direction away from said first wing portion, and that is spaced apart from said inner surface of said first seat body in the top-bottom direction;
• a shock absorber unit including a first elastic member that is located between said inner surface of said first seat body and said first wing portion, and a second elastic member that is located between said inner surface of said first seat body and said second wing portion;
• an accessory structure that is connected to the other one of said opposite ends of said axle member that is away from said second seat body, and that is adapted to provide resistance to an exercise performed by a user;
• wherein, when said accessory structure sways, said axle member alternately rotates leftward and rightward and the swing member swings between a left-leaning position and a right-leaning position relative to said first seat body;
• wherein when said swing member is in the left-leaning position, said first wing portion is closer to said inner surface of said first seat body than said second wing portion, and said first wing portion compresses said first elastic member to generate a biasing force acting on said swing member in the clockwise direction;
• and
• wherein when said swing member is in the right-leaning position, said second wing portion is closer to said inner surface of said first seat body than said first wing portion, and said second wing portion compresses said second elastic member to generate a biasing force acting on said swing member in the anti-clockwise direction.