Transmission structure for bicycle

A transmission structure for a bicycle, comprising two opposite transmission units, wherein each of the transmission units comprises a linear reciprocating pedaling mechanism and a transmission module which is in transmission connection with the linear reciprocating pedaling mechanism;

• and the transmission modules of the two transmission units are connected with a power output mechanism through a unidirectional transmission mechanism, each of the transmission units further comprises a resetting module connected with the transmission module;
• the transmission module comprises a first driven wheel and a first transmission gear configured to be coaxial with the first driven wheel;
• the resetting module comprises a connecting piece and an elastic piece;
• the connecting piece is connected with the first transmission gear, and the elastic piece is connected with the connecting piece;
• wherein
• the transmission module further comprises a second driven wheel and a transmission connection device;
• and the first driven wheel is connected with the second driven wheel through the transmission connection device;
• and
• the linear reciprocating pedaling mechanism comprises a linear guide rail which is disposed linearly and a pedal which is in sliding connection with the linear guide rail;
• the linear guide rail is parallel to one side of the transmission connection device;
• and the pedal is fixedly connected with the side of the transmission connection device.