| 摘要 |
A protection sleeve structure, which is provided on ear-device, said ear-device includes the body, said structure includes a joint access adapting the body, and an elastic element which forms a close space with auricle, the structure also includes a protrusion ring with a plurality of through holes, said ring covers on the body, the material of structure is one of silica gel, rubber or thermoplastic synthetic rubber. The invention also provides an earphone with the structure, which is good about seal and sound insulation, and it improves the tone and volume, it is more comfort in use. The invention also provides an earplug with the structure, which can increase the comfort in use. |
