Massage mechanism and its massager

A massage mechanism, comprising:

• a base, motor, drive assembly, wherein the drive assembly comprises two groups of a first massage drive assembly and two groups of a second massage drive assembly, first drive shaft, a pair of first bearings, two first massage head assemblies, inter-shaft drive assembly, second transmission shaft, a pair of second bearings, and two second massage heads;
• wherein the motor is assembled on the base;
• each of the first bearings are connected to each of two ends of the first driving shaft and the first driving shaft is fixed at the base;
• each of the second bearings are connected to each of two ends of the second driving shaft and the second driving shaft is fixed at the base;
• the motor is connected with the first drive shaft by the drive assembly;
• the first drive shaft and the second drive shaft are connected through the inter shaft drive assembly;
• the first drive shaft and the second drive shaft are configured to be driven synchronously when the motor is started;
• the two groups of the first massage drive assembly, each equipped with one of the first massage head assembly, are set in symmetry at the two ends of the first drive shaft respectively;
• the first drive shaft is configured to drive the two first massage head assemblies to twist repeatedly towards left and right symmetrically, kneading and releasing a massage part alternately with a back and forth massage action;
• the two groups of the second massage drive assembly, each fixed with one of the second massage head, are symmetrically set at the two ends of the second drive assembly respectively;
• and the second drive shaft is configured to drive the two second massage heads to rotate up and down synchronously in an arc shape to form repeated pushing and stretching actions on the massage part,
• wherein each of the second massage drive assemblies comprise an eccentric gear, fixed shaft and second limit chute;
• the fixed shaft is fixed at the base;
• nested and fixed in the second drive shaft, the eccentric gear has its one end face equipped with eccentric boss column which is configured to be connected to the second limit chute by slipping;
• each of the second massage heads comprises a swing and a rolling ball;
• the rolling ball connects to the top end of the swing rotationally and there is a shaft hole which connects to the fixed shaft at the bottom of the swing;
• with the second limit chute on it, the swing is rotated around the fixed shaft;
• and wherein the second drive shaft is configured to drive the eccentric gear to rotate while the eccentric boss column slides relatively on the second limit chute and drives the each of the second massage heads to rotate repeatedly up and down in the arc shape.