Module structure

A module structure, wherein, the module structure comprises a torsional spring (500) that is fixed to a bail (800);

• the torsional spring (500) comprises a left torsional spring (501) and a right torsional spring (502) that are symmetrically provided on the bail (800);
• the left torsional spring comprises a first supporting rod (5011), a first screw hole (5013), a first connecting rod (5014) and a second screw hole (5012) that are sequentially connected;
• and the right torsional spring comprises a second supporting rod (5021), a third screw hole (5023), a second connecting rod (5024) and a fourth screw hole (5022) that are sequentially connected;
• the first supporting rod (5011) and the second supporting rod (5021) are in the form of a straight rod, and the first connecting rod (5014) and the second connecting rod (5024) are in the form of an L-shaped rod;
• the second screw hole (5012) is nested outside a third rotation shaft (803) of the bail (800), the first screw hole (5013) is nested outside a first rotation shaft (801) after passing through the L-shaped-rod formed first connecting rod (5014), and a direction of the first supporting rod (5011) is upwardly inclining and forms an angle of less than 90° with the plane where the bail (800) is located;
• and
• the fourth screw hole (5022) is nested outside a fourth rotation shaft (804) of the bail (800), the third screw hole (5023) is nested outside a second rotation shaft (802) after passing through the L-shaped-rod formed second connecting rod (5024), and a direction of the second supporting rod (5021) is upwardly inclining and forms an angle of less than 90° with the plane where the bail (800) is located.