TRANSMISSION STRUCTURE, TRANSMISSION CONNECTION MECHANISM AND AIR COMPRESSOR

A transmission structure, a transmission connection mechanism and an air compressor. The transmission structure comprises a rotating shaft (1) and a transmission body (2), wherein one end of the rotating shaft (1) is provided with a limiting track (11), and the other end of the rotating shaft (1) is used for being connected to a driving mechanism (5); and one end of the transmission body (2) movably matches the limiting track (11), so that the transmission body (2) reciprocates along an axis of the rotating shaft (1) under the limiting of the limiting track (11) when the rotating shaft (1) rotates, and the other end of the transmission body (2) is used for being connected to an apparatus needing to do linear reciprocating work. When the rotating shaft (1) is driven to rotate by the driving mechanism (5), the transmission body (2) reciprocates along the axis of the rotating shaft (1) under the limiting of the limiting track (11), so that the apparatus connected to the transmission body (2) carries out linear reciprocating work, thereby facilitating a reduction in the deflecting force, a reduction in the power loss and an improvement in the transmission efficiency.