发明名称 Handset
摘要 In handsets, there is the problem that their acoustic properties are determined by the prevolume in front of the microphone capsule and earpiece. The prevolume required is dependent on the type of transducer system of the capsules. In the handset, a bearing ring (27) which in each case defines a prevolume is attached to the front of the microphone capsule or earpiece (6) via which the microphone capsule or earpiece (6) is supported on a bearing surface (8) of the housing, which surface has sound bores (9); in this way, the prevolume is determined by the microphone capsule and earpiece (6) themselves so that it can be adapted to the respective transducer system of the microphone capsule or earpiece independently of the handset housings. The handset is suitable for telephone sets. <IMAGE>
申请公布号 DE3826570(A1) 申请公布日期 1990.02.08
申请号 DE19883826570 申请日期 1988.08.04
申请人 APPARATEBAU WILHELM HEIBL GMBH & CO KG, 8677 SELBITZ, DE 发明人 KOEHLER, REINHARD;KOEHLER, GERHARD, 8662 HELMBRECHTS, DE
分类号 H04M1/03 主分类号 H04M1/03
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