Wireless charging mouse

A wireless charging mouse, comprising:

• an upper housing;
• a lower housing being fixed to the upper housing and having an aperture for exposing a displacement sensing module;
• and
• a coil board being integrally embedded in the lower housing by injection molding such that the coil board and the lower housing are formed as a one-piece structure,
• wherein the coil board is partially enclosed in the lower housing, and a top surface of the lower housing forms an inspection opening that exposes terminals of the coil board such that a short circuit testing is done on the terminals on the coil board,
• wherein the coil board has a plate board and a coil formed on the plate board, and an outer contour of a rear portion of the coil is irregularly shaped the same as an outer contour of a rear portion of the lower housing,
• wherein the rear portion of the coil has a first part, a second part connected to the first part, a third part connected to the second part, and a fourth part connected to the third part,
• wherein an inner side of the first part and an inner side of the second part define a first angle there-between, the inner side of the second part and an inner side of the third part define a second angle there-between, and an outer side of the third part and an outer side of the fourth part define a third angle there-between, and wherein the first angle is set to be greater than the second angle, and the third angle is set to be greater than the first angle.