Waterproof button module and electronic device

An electronic device, comprising:

• a case element having an accommodating space;
• a printed circuit board disposed in the accommodating space, and the printed circuit board comprising a touch unit;
• and
• a waterproof button module disposed on the case element, and the waterproof button module comprising:
• a base disposed on the case element, and the base comprising a slotted hole;
• a button mainbody disposed on the base and covering the slotted hole, wherein the button mainbody is made of a flexible material, and the button mainbody comprises:
• a pressing portion exposed to the slotted hole;
• a connecting portion integrally connected to and surrounding the pressing portion, and the connecting portion disposed in the slotted hole;
• and
• at least two annular protruding structures separated from each other and disposed on the connecting portion, and the at least two annular protruding structures abutting against an inner surface of the slotted hole;
• a button shaft element disposed on the base, wherein a first end portion of the button shaft element is connected to an inner surface of the button mainbody, and a second end portion of the button shaft element is for pressing the touch unit;
• and
• at least one elastic connecting element, wherein an end of the at least one elastic connecting element is fixedly disposed on the base, and another end of the at least one elastic connecting element is connected to the button shaft element;
• wherein the button mainbody further comprises a binding structure disposed on the inner surface of the button mainbody, the button shaft element comprises a connecting structure disposed on the first end portion, and the connecting structure is connected to the binding structure;
• wherein at least one gap is formed between the inner surface of the button mainbody and the connecting structure.

A waterproof button module, which is applied to an electronic device, comprising:

• a button mainbody made of a flexible material, and the button mainbody comprising:
• a pressing portion;
• a connecting portion integrally connected to and surrounding the pressing portion, and
• at least two annular protruding structures separated from each other and disposed on the connecting portion;
• a button shaft element, wherein a first end portion of the button shaft element is connected to an inner surface of the button mainbody, and a second end portion of the button shaft element is for pressing a touch unit;
• and
• at least one elastic connecting element connected to the button shaft element, wherein the at least one elastic connecting element is a curved cantilever;
• wherein the button mainbody further comprises a binding structure disposed on the inner surface of the button mainbody, the button shaft element comprises a connecting structure disposed on the first end portion, and the connecting structure is connected to the binding structure;
• wherein at least one gap is formed between the inner surface of the button mainbody and the connecting structure.