Connection structure, headphone, and headphone system

A headphone, comprising a connection structure, wherein the connection structure comprises:

• a functional box comprising a box body and a cover body mounted at the box body, the cover body being engaged with the box body to define a mounting cavity, wherein the box body is provided with a connection portion on at least one end of the box body, wherein the connection portion has an insertion hole extending through the connection portion, and wherein the insertion hole is configured to communicate the mounting cavity with an external environment;
• a connection component connected to the functional box, wherein the insertion hole is configured to allow the connection component to be inserted into the insertion hole, and wherein the connection component is provided with a protuberance abutting against a sidewall of the functional box;
• and
• an anti-detachment member disposed in the mounting cavity, wherein the anti-detachment member is configured to fixedly connect the functional box with the connection component.

A headphone system, comprising:

• a headphone comprising a connection structure, wherein the connection structure comprises:
• a functional box comprising a box body and a cover body mounted at the box body, the cover body being engaged with the box body to define a mounting cavity, wherein the box body is provided with a connection portion on at least one end of the box body, wherein the connection portion has an insertion hole extending through the connection portion, and wherein the insertion hole is configured to communicate the mounting cavity with an external environment;
• a connection component connected to the functional box, wherein the insertion hole is configured to allow the connection component to be inserted into the insertion hole, and wherein the connection component is provided with a protuberance abutting against a sidewall of the functional box;
• and
• an anti-detachment member disposed in the mounting cavity, wherein the anti-detachment member is configured to fixedly connect the functional box with the connection component;
• and
• a charging box configured to charge the headphone.