Sound transducer comprising a plurality of single transducers and method for the production thereof

An acoustic transducer and transducer technology, which are applied in the directions of instruments, sound-producing instruments, and fluids that utilize vibration, can solve the problem that the acoustic transducer is not covered by vibration-absorbing materials, etc.

Active Publication Date: 2017-10-13
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A disadvantage of the prior art is that a large part of the individual sound transducers is not covered by damping material

Method used

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  • Sound transducer comprising a plurality of single transducers and method for the production thereof
  • Sound transducer comprising a plurality of single transducers and method for the production thereof
  • Sound transducer comprising a plurality of single transducers and method for the production thereof

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Embodiment Construction

[0047] In the following description of exemplary embodiments of the invention, identical or similar parts of elements are provided with the same reference symbols, wherein in individual cases a repeated description of these parts or elements is omitted. The figures show only schematically the object of the invention.

[0048] figure 1 A first embodiment of an acoustic transducer is shown.

[0049] exist figure 1 An acoustic transducer 1 is shown in FIG. 1 , which comprises, for example, three individual transducers 10 . In further embodiment variants, the sound transducer can comprise from two to two hundred and fifty individual transducers 10 .

[0050] Each single transducer 10 includes a carrier 12 and a piezoelectric element 14 . exist figure 1 In an embodiment of the present invention, the piezoelectric element 14 and the carrier 12 are embodied as separate components and are connected to each other by an adhesive 22 . The piezoelectric element 14 comprises a fir...

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Abstract

The invention relates to a sound transducer (1) comprising a plurality of single transducers (10), wherein the single transducers (10) have a carrier (12) and a piezoelectrical element (14) with a first electrode (16) and a second electrode (18). According to the invention, the single transducer (10) is adhered to a flexible film (30) in the form of an array, and the surfaces of the single transducers (10) that are not connected to the flexible film (30) are surrounded by an encapsulation material (60) having vibration damping properties. The invention also relates to a method for producing a sound transducer (1) of this type.

Description

technical field [0001] The invention relates to an acoustic transducer comprising a plurality of individual transducers, wherein the individual transducers comprise a carrier and a piezoelectric element having a first electrode and a second electrode. Furthermore, the invention relates to a method for producing such an acoustic transducer. Background technique [0002] Acoustic transducers are used, for example, in ultrasound-based sensors, by means of which the distance between the ultrasound sensor and the reflecting object can be measured. In this case, the sound transducer is used as transmitter and / or receiver, wherein in a first step the ultrasound signal is reflected by the sound transducer. If an ultrasound signal hits a reflecting object, an ultrasound echo is generated, which in turn can be detected by the sound transducer. The distance to the reflecting object can be calculated from the time elapsed between sending the ultrasound signal and detecting the ultraso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06G10K11/00
CPCB06B1/0685G10K11/002H10N30/875
Inventor A·格拉赫B·朔伊费勒
Owner ROBERT BOSCH GMBH
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