Method for manufacturing an ultrasonic transducer

Patent metadata

Field	Value
Publication number	US-9503830-B2
Application number	US-201314042907-A
Country	US
Kind code	B2
Filing date	Oct 1, 2013
Priority date	Oct 24, 2006
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

An ultrasonic transducer includes: a diaphragm pot that has a surrounding wall; a transducer element mounted in a diaphragm pot on a transducer section on an inner side of the diaphragm for generating the ultrasonic vibrations; a first damping element situated in the diaphragm pot on transducer element for damping the diaphragm; and a second damping element situated within the diaphragm pot in an edge section of the diaphragm around the transducer element for damping vibrations of the wall; the second damping element being connected with force locking, at least section by section, both to the edge section and to the inner side of the wall.

First claim

What is claimed is:

1. A method for manufacturing an ultrasonic transducer having:
a diaphragm pot having a surrounding wall and a diaphragm;
a transducer element;
a first damping element; and
a second damping element,
the method comprising:
inserting the second damping element into the diaphragm pot, the second damping element being connected in a force-locking manner to an inner surface of the surrounding wall of the diaphragm pot and to an edge region of an inner side of the diaphragm in the diaphragm pot;
fitting the first damping element into a through hole of the second damping element,
removably mounting, before the insertion of the second damping element, a core having the shape and the dimensions of the first damping element on the transducer element, wherein the second damping element is introduced as a castable material into a region between the core and the inner surface of the surrounding wall of the diaphragm pot; and
removing the core to form the through hole, after the curing of the second damping element.

2. The method according to claim 1 , further comprising:
closing the diaphragm pot using a third damping element.

Assignees

• Bosch Gmbh Robert

Inventors

• Reiche Martin

Classifications

• H04R31/00 Primary

  Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor {(manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182)} · CPC title

• Y10T29/49005

  Acoustic transducer · CPC title

• G10K9/122

  using piezoelectric driving means {(G10K9/121 takes precedence)} · CPC title

• G01S7/521 Primary

  Constructional features · CPC title

• G01S15/93 Primary

  for anti-collision purposes · CPC title