发明名称 |
SYSTEM FOR FORMING A HEARING PROTECTOR, EAR CUP IN SUCH A SYSTEM, AND HEARING PROTECTOR FORMED BY SUCH A SYSTEM |
摘要 |
<p>The invention concerns a system for forming hearing protectors, an ear cup of such a system and a hearing protector formed from such a system. The system comprises a number of first ear cups (5a) and a number of second ear cups (5b), the first and second ear cups having noise-reducing spaces (11 ) of different size, and at least one electronic unit (30) with at least one speaker (31 ). An inner distance (I3) in the noise-reducing space from the speaker (31 ) in the direction away from the noise-reducing space, and a volume (V3) of a resonance space (15) in the first ear cup are adapted to the inner distance (lb) and the volume (Vb) of the resonance space (15) in the second ear cup (5b). This is done in such a manner that, when the electronic unit is mounted in each ear cup, sound emitted by the speaker (31 ) in each ear cup produces substantially the same sound characteristic from the first ear cup (5a) as that from the second ear cup (5b). This allows the same type of electronic unit to be used for ear cups with different degrees of noise attenuation.</p> |
申请公布号 |
WO2008100197(A1) |
申请公布日期 |
2008.08.21 |
申请号 |
WO2008SE00098 |
申请日期 |
2008.02.06 |
申请人 |
MSA SORDIN AB;ROOS, ANDERS;BIRGERSSON, JOAKIM;DAVIDSSON, HAAKAN |
发明人 |
ROOS, ANDERS;BIRGERSSON, JOAKIM;DAVIDSSON, HAAKAN |
分类号 |
A61F11/14;H04R1/10 |
主分类号 |
A61F11/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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