Quartz clock type timer movement

A timer movement comprising a shell, wherein a quartz movement body, a sound component and a central output wheel assembly driven by the quartz movement body are disposed in the shell, a Printed Circuit Board (PCB) and a traveling wheel driven by the central output wheel assembly are disposed at a top of the shell, and a battery compartment is disposed at a bottom of the shell;

• wherein the timer movement is configured such that
• the traveling wheel can rotate so as to set a timing duration, and in a countdown state, power provided by the quartz movement body can be transmitted onto the traveling wheel through the central output wheel assembly;
• and when the set timing duration is reached, the sound component is started at the moment the traveling wheel triggers an internal switch;
• wherein a leaf spring and a switch pillar are disposed on the PCB, and a toggle rod forcing the leaf spring to bend so as to touch the switch pillar is disposed on the traveling wheel,
• wherein the central output wheel assembly comprises a central wheel axle rotatably positioned on the quartz movement body and connected with the traveling wheel, a transmission gear rotatably positioned on the central wheel axle and engaged with an output gear of the quartz movement body, and a spring pressing sheet used for pressing the transmission gear and the central wheel axle together to generate a driving frictional force between the transmission gear and the central wheel axle;
• wherein the transmission gear is provided with a central hole matched with a central shaft, and a concave hole matched with a pressing disc of the central wheel axle is formed in a bottom surface of the transmission gear.