Safety device and striking-work mechanism

A safety device for a striking-work of a horological mechanism for striking an indicator on a dial, said safety device comprising:

• a first wheel, said at least one first wheel being configured to be meshed with and movably mounted on a shaft, said at least one first wheel comprising at least one abutment member;
• a second wheel, said second wheel being movably mounted on said shaft and configured to be driven by said at least one abutment member when said at least one first wheel is meshed, said second wheel including at least one first portion, at least one second portion and at least one intermediate portion disposed between said at least one first portion and said at least one second portion, each of the first portion, second portion and intermediate portion are provided on an outer circumference surface of the second wheel;
• and
• an actuating member, said at least one actuating member being configured to act on said at least one intermediate portion so as to free said second wheel from said at least one abutment member and strike the at least one second portion,
• wherein the first portion, second portion, and intermediate portion are formed along a same plane,
• wherein said at least one first portion and said shaft are distant by a first distance, said at least one second portion and said shaft are distant by a second distance and said at least one intermediate portion and said shaft are distant by an intermediate distance, the intermediate distance is less than the first distance and greater than the second distance, and
• wherein the abutment member is located on the first wheel on a first side of the shaft, and the first, second and intermediate portions are located on the second wheel on a second side of the shaft, the second side being opposite to the first side.