Title:
イヤープラグ
Document Type and Number:
Japanese Patent JP7084054
Kind Code:
B2
Abstract:
To provide an ear plug having a new structure for easily controlling noise attenuation level.SOLUTION: The ear plug according to the present invention comprises: a body 10 having a structure in a cylindrical shape with an open lower side, and having an opening/closing hole 11 into which external noise is introduced on one side of an upper surface; a bottom plate 20 sealing the lower end of the body 10, having a noise discharge hole 21 formed in a central portion, and provided, on a lower surface thereof, with an extension tube 22 extending downward from the noise discharge hole 21; an ear tip 30 having a structure of an elastic material to be coupled to an outer side of the extension tube 22 and inserted into a user's ear; a sound absorbing member 40 provided in a central portion of the noise discharge hole 21 to attenuate the noise discharged from the noise discharge hole 21; and an opening/closing member 50 coupled to the inside the body 10 in a lateral direction to be rotatable and provided with an adjusting pin 51 inserted into the opening/closing hole 11 on one side. The user can adjust the level to which noise is blocked by adjusting the opening/closing level of the opening/closing hole 11 using the adjusting pin 51.SELECTED DRAWING: Figure 3
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Inventors:
Li, Sanwon
Application Number:
JP2020157031A
Publication Date:
June 14, 2022
Filing Date:
September 18, 2020
Export Citation:
Assignee:
AZLA INC.
International Classes:
A61F11/08; G10K11/16
Domestic Patent References:
| JP2002509474A | ||||
| JP2017512540A |
Foreign References:
| KR1020170006800A | ||||
| US6082485 | ||||
| US5113967 | ||||
| US20120318605 |
Attorney, Agent or Firm:
Maeda/Suzuki International Patent Corporation