Silencer and noise reduction earplug with same

A technology for mufflers and earplugs, which is applied in earplugs, loudspeakers, and earphones to reduce environmental noise, etc. It can solve the problems of reducing the intensity of middle and high frequency sound, the reduction of middle and low frequency noise cannot be effectively controlled, and the reduction of sound wave penetration. , to achieve the effect of isolating harmful noise

Pending Publication Date: 2017-12-26
JIANGYIN SIAN PLASTIC PROTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, research and development in the market has reduced the penetration of sound waves through small holes, so as to reduce the intensity of medium and high frequency sounds. However, due to the diffraction characteristics of sound waves, the reduction of some frequencies, especially low-frequency noise, cannot be effectively controlled.

Method used

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  • Silencer and noise reduction earplug with same
  • Silencer and noise reduction earplug with same
  • Silencer and noise reduction earplug with same

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Such as Figure 1-3 As shown, this embodiment provides a muffler, which is composed of a plug body 1 and a stopper rod 2 . The far ear end of the plug body 1 is provided with a sound gathering cavity 101, and the edge of the sound closing cavity 101 has an outwardly extending chamfer, which is convenient for the external sound wave S1...

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Abstract

The invention discloses a silencer and a noise reduction earplug with the same. The silencer comprises a plug body and a plug rod, a sound gathering cavity is formed in the far ear end of the plug body, and the edge of the sound gathering cavity is provided with a chamfer extending outwards; a conduction cavity is formed in the plug body, and the conduction cavity is formed in the rear side of the sound gathering cavity; the conduction cavity is a cylinder or an inverted cone, and the plug rod is plugged into the conduction cavity; the plug rod is attached to the conduction cavity, the plug rod is a cylinder or a cone, a through groove is axially formed in the outer surface of the plug rod, and a noise suppression cavity is formed between the groove in the outer surface of the plug rod and the inner surface of the conduction cavity. The silencer can isolate harmful noise and can keep the sound intensity of the portion needing silencing in a reasonable and human ear hearing range.

Description

technical field [0001] The invention relates to the technical field of a noise reducer used for filtering noise, in particular to a noise reducer and a noise reduction earplug including the noise reducer. Background technique [0002] At present, various requirements for hearing protection in life and work are becoming more and more common. Conventional sponge and plastic earplugs can reduce the decibel value of various sounds. There are currently researches and developments in the market that use small holes to reduce the penetration of sound waves, thereby reducing the intensity of mid-to-high frequency sound. However, due to the diffraction characteristics of sound waves, the reduction of some frequencies, especially low-frequency noise, cannot be effectively controlled. Contents of the invention [0003] Aiming at the problems and deficiencies of the prior art, the present invention provides a muffler and noise-reducing earplugs including it, which can keep the require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10G10K11/04G10K11/16
CPCH04R1/1083G10K11/04G10K11/161H04R2201/105A61F11/08A61F11/085
Inventor 顾少荣
Owner JIANGYIN SIAN PLASTIC PROTECH CO LTD
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