Indication gear for energy of mechanical watch spring

The utility model provides an indication mechanism for the energy of a mechanical watch spring. A gear shaft (18) is pressed at the upper end of a spring shaft (19), and can educe the motion of winding up the spring; a wheel shaft (1) is engaged with a spring barrel wheel (17), and can educe the motion of releasing the spring. The motion of winding up the spring can make a guide finger (11) be the clockwise rotation through a friction wheel sheet (21) and a planetary gear train. When the spring can wind up fully, the A end of the limited slot of a guide finger wheel sheet (8) is arranged on a banking pin (12), and the guide finger (11) can stop rotating; when the spring can wind up sequentially (such as an automatic watch), the friction wheel sheet (21) is slid on a central gear (9), and the spring can be relaxed and can make the guide finger (11) be the anticlockwise rotation through a gear transmission and the planetary gear train when the watch is running; when the spring is relaxed completely, the B end of the limited slot of the guide finger wheel sheet (8) is arranged on the banking pin (12), and the guide finger (11) can stop rotating. The energy stored by the spring can be the numerical value indicated on a disk (23) by the guide finger (11) (the numerical value can be indicated with the hour in the picture).