发明公开
- 专利标题: SCHALLWANDLER
- 专利标题(英): EP3319738A1 - Sound transducer
- 专利标题(中): 换能器
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申请号: EP16723061.4申请日: 2016-05-09
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公开(公告)号: EP3319738A1公开(公告)日: 2018-05-16
- 发明人: KARL, Matthias
- 申请人: Robert Bosch GmbH
- 申请人地址: Postfach 30 02 20 70442 Stuttgart DE
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: Postfach 30 02 20 70442 Stuttgart DE
- 优先权: DE102015212686 20150707
- 国际公布: WO2017005395 20170112
- 主分类号: B06B1/06
- IPC分类号: B06B1/06 ; G10K9/12 ; G10K9/122 ; G10K9/125 ; H04R17/00 ; H04R17/02
摘要:
The invention relates to a sound transducer (10; 10a to 10f), comprising a diaphragm (11; 62) and at least one piezo actuator (20; 20a; 40) which is arranged in operative connection with the diaphragm (11; 62), wherein the direction of vibration (25) of the piezo actuator (20; 20a; 40) is arranged at least substantially perpendicular to the direction of vibration (13) of the diaphragm (11; 62), wherein at least one lever element (16; 16a; 16b; 17; 17a; 17b; 48; 48a; 49; 49a; 68, 69) is arranged between the diaphragm (11; 62) and the piezo actuator (20; 20a; 40), connecting the diaphragm (11; 62) with the piezo actuator (20; 20a; 40) and designed to transform vibrations of the piezo actuator (20; 20a; 40) into vibrations of the diaphragm (11; 62) and vice versa, and wherein a clamp connection is formed between the at least one lever element (16; 16a; 16b; 17; 17a; 17b; 48; 48a; 49; 49a; 68, 69) and the piezo actuator (20; 20a; 40). According to the invention, the clamp connection is formed in the region between an end face (23; 23a, 24; 24a) of the piezo actuator (20; 20a; 40) arranged in the vibration direction (25) of the piezo actuator (20; 20a; 40), and the at least one lever element (16; 16a; 16b; 17; 17a; 17b; 48; 48a; 49; 49a; 68, 69), and the piezo actuator (20; 20a; 40) arranged by means of the at least one lever element (16; 16a; 16b; 17; 17a; 17b; 48; 48a; 49; 49a; 68, 69) under an axial pre-tensioning force (F) acting in the vibration direction (25) of the piezo actuator (20; 20a; 40).
公开/授权文献
- EP3319738B1 SCHALLWANDLER 公开/授权日:2019-08-28
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