| 摘要 |
#CMT# #/CMT# The hammer has a gong (3), where a distance (lF) separating a percussion zone (1) of the hammer from a rotation axis (P) of the hammer is less than 10% longest distance (lR) between the rotation axis of the hammer and a point i.e. body (2), of the hammer and greater than or equal to distance (lG) between center of gravity of the hammer and the rotation axis of the hammer. #CMT#USE : #/CMT# Hammer for a clock striking mechanism of wrist watch, pendant watch and miniature watch (all claimed). #CMT#ADVANTAGE : #/CMT# The hammer reduces reaction force on a fulcrum pin of the hammer during impact on the gong so as to improve transmission of energy from the hammer to the gong during impact. The shape of the hammer varies largely so as to provide free rein to the imagination of clocks to create aesthetically original striking mechanisms. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic sectional view of a hammer with pseudo form. lF : Distance separating percussion zone from rotation axis of hammer lG : Distance between center of gravity of hammer and rotation axis lR : Longest distance between point of periphery of hammer and rotation axis of hammer P : Rotation axis of hammer 1 : Percussion zone 2 : Body of hammer 3 : Gong. |
