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    • 12. 发明授权
    • Loudspeaker mounting device for car radio
    • 用于汽车收音机的扬声器安装装置
    • US4733748A
    • 1988-03-29
    • US22773
    • 1987-03-06
    • Pasco C. Ponticelli, Jr.
    • Pasco C. Ponticelli, Jr.
    • H04R1/02H05K5/00H04R7/22
    • H04R1/025
    • A mounting frame for a loudspeaker has a plurality of similar slots formed at each of the corners thereof. A beveled tooth is formed in one of the walls of each slot. An L-shaped bracket having longitudinal and transverse arm portions has transverse serrations formed in the outer surface of the longitudinal arm portion. One of the brackets is inserted into each slot opposite the beveled tooth thereof with the serrations ratcheting on the edge of the tooth to a selected locking position whereat the transverse arm of the bracket abuts against the speaker frame. A bendable tab extends into the slot at a portion thereof adjacent to the beveled tooth, this bendable tab operating to retain the bracket in position but when bent over enabling the sideways motion of the bracket so that it can be removed from the slot. The frame is mounted to a wall of the vehicle by means of a pair of bracket members each having a pair of arms with a surface which is serrated transversely and which engages mating teeth on a serrated leg extending outwardly from the frame, the brackets have posts extending therefrom which fit under U-shaped hangers in a wall of the vehicle to retain the frame to the wall of such vehicle.
    • 用于扬声器的安装框架具有形成在其每个拐角处的多个相似的狭槽。 在每个槽的一个壁中形成有斜齿。 具有纵向和横向臂部分的L形支架具有形成在纵向臂部分的外表面中的横向锯齿。 其中一个托架被插入与其斜齿相对的每个槽中,其中锯齿在齿的边缘上棘齿到选定的锁定位置,在该锁定位置,托架的横向臂抵靠扬声器框架。 可弯曲的突片在与斜齿相邻的部分处延伸到槽中,该可弯曲的突出部操作以将支架保持在适当位置,但是当弯曲时能够使支架的侧向运动能够从槽中移除。 框架通过一对支架构件安装到车辆的墙壁上,每个支架构件具有一对臂,横向具有锯齿形的表面,并且与从框架向外延伸的锯齿状腿上的啮合齿接合,支架具有柱 从其延伸,其配合在车辆的墙壁内的U形衣架下,以将框架保持在该车辆的墙壁上。
    • 13. 发明授权
    • Piezoelectric electroacoustic transducer
    • 压电式电声换能器
    • US4063049A
    • 1977-12-13
    • US755208
    • 1976-12-29
    • Roberto PipitoneColombo Gnocchi
    • Roberto PipitoneColombo Gnocchi
    • H04R7/22H04R17/00
    • H04R7/22H04R17/00
    • An electroacoustic transducer, such as a microphone or a telephone receiver, comprises a thermoplastic body with a central plateau surrounded by an annular recess from which an elastic ring projects slightly above the plateau to support a membrane in the form of sheet-metal foil carrying a piezoceramic layer. The body is overlain by a thermoplastic cover which has apertures for the passage of sound waves and is formed with an internal annular rib registering with the elastic ring to clamp the rim of the membrane therebetween. The body, the cover and a thermoplastic base are joined together by ultrasonic welding.
    • 诸如麦克风或电话接收器的电声换能器包括热塑性体,其中心平台被环形凹部包围,弹性环从该环形凹槽稍微突出,以支撑呈片状金属箔形式的膜,承载着 压电陶瓷层。 主体由具有用于声波通过的孔的热塑性盖子覆盖,并且形成有与弹性环对准的内部环形肋,以将膜的边缘夹在其间。 主体,盖子和热塑性基座通过超声波焊接连接在一起。