WO2003002271A1 - Transducteur acoustique a anneau precontraint - Google Patents
Transducteur acoustique a anneau precontraint Download PDFInfo
- Publication number
- WO2003002271A1 WO2003002271A1 PCT/FR2002/001898 FR0201898W WO03002271A1 WO 2003002271 A1 WO2003002271 A1 WO 2003002271A1 FR 0201898 W FR0201898 W FR 0201898W WO 03002271 A1 WO03002271 A1 WO 03002271A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screws
- plate
- heads
- sectors
- transducer according
- Prior art date
Links
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0655—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of cylindrical shape
Definitions
- the present invention relates to acoustic transducers which comprise a ceramic ring formed of a set of segments that are prestressed. These transducers allow in particular to emit low frequency acoustic signals with high power. They are mainly used in the field of underwater acoustic tracking. It is known from French patent n ° 94 15587 filed on
- the invention provides an acoustic transducer with a prestressed ring, of the type comprising a set of sectors separated by prestressing corners provided with screws making it possible to slide the corners radially between the sectors to ensure said prestressing, mainly characterized in that these screws are with hexagonal head, and in that it further comprises a flat part positioned on the face of the corner from which the heads of the screws come out and comprising recesses whose diameter "d '" is slightly less than the width between the edges "d" of the screw heads, so that when setting instead of this plate, said screw heads are housed in these recesses and so that the edges of these heads are anchored on the perimeter of the recess in order to block the screws in rotation.
- said plate has an upper rim and a lower rim giving it a U shape so that it can be clipped onto the corner on which it is mounted.
- the plate comprises transverse channels hollowed out in its thickness intended to pass the supply wires of the piezoelectric sectors.
- the transducer comprises only the two end tightening screws; the middle screw having been removed after obtaining the prestress.
- said plate (107) is made of insulating material.
- FIG. 2 a partial view of the characteristic elements of a transducer according to the invention.
- a transducer ring as described in the patent application cited above comprises piezoelectric sectors such as 100 and 101, separated by corners such as 102 and by shims such as 103 and 104.
- Three radial holes 105 can accommodate screws 106, one of which is shown in enlarged form in the angle of the drawing in relation to the hole in which it is placed. By screwing these screws, they press on a shaping ring (not shown) in which the assembly is placed. Under this effect the wedge moves towards the center of the ring and puts the segments in compression.
- the screws are round head, with a hexagonal hollow in the center allowing them to be screwed using a so-called "ALLEN" key.
- hexagonal head screws are used in place of these screws, which can therefore be screwed in using a pipe, pipe or fork wrench, or with a socket fitted on a ratchet.
- the invention proposes to place on the inner face of the corner 102, from which the hexagonal heads of the screws 106 emerge, a plate 107 whose width and height are substantially equal to the internal face. from point 102.
- This plate advantageously ends with upper and lower edges which allow it to be embedded on the inner face of the corner and giving it a "U" shape.
- the part 107 according to the invention simultaneously makes it possible to block the screws 106 to prevent them from unscrewing with the vibrations, to maintain the electrical wires supplying the sectors and to isolate them from the electrical point of view with respect to their environment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Burglar Alarm Systems (AREA)
- Coils Or Transformers For Communication (AREA)
- Surgical Instruments (AREA)
- Electrophonic Musical Instruments (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60205627T DE60205627T2 (de) | 2001-06-29 | 2002-06-04 | Akustischer wandler unter verwendung eines vorgespannten rings |
DK02748930T DK1399273T3 (da) | 2001-06-29 | 2002-06-04 | Akustisk transducer med forspændt ring |
EP02748930A EP1399273B1 (fr) | 2001-06-29 | 2002-06-04 | Transducteur acoustique a anneau precontraint |
AT02748930T ATE302070T1 (de) | 2001-06-29 | 2002-06-04 | Akustischer wandler unter verwendung eines vorgespannten rings |
US10/481,429 US6879090B2 (en) | 2001-06-29 | 2002-06-04 | Acoustic transducer with prestressed ring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/08675 | 2001-06-29 | ||
FR0108675A FR2826828B1 (fr) | 2001-06-29 | 2001-06-29 | Transducteur acoustique a anneau precontraint |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003002271A1 true WO2003002271A1 (fr) | 2003-01-09 |
Family
ID=8864970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/001898 WO2003002271A1 (fr) | 2001-06-29 | 2002-06-04 | Transducteur acoustique a anneau precontraint |
Country Status (7)
Country | Link |
---|---|
US (1) | US6879090B2 (fr) |
EP (1) | EP1399273B1 (fr) |
AT (1) | ATE302070T1 (fr) |
DE (1) | DE60205627T2 (fr) |
DK (1) | DK1399273T3 (fr) |
FR (1) | FR2826828B1 (fr) |
WO (1) | WO2003002271A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004065924A1 (fr) * | 2003-01-17 | 2004-08-05 | Kistler Holding Ag | Element de precontrainte pour des capteurs |
KR20100017857A (ko) * | 2007-05-18 | 2010-02-16 | 지에스아이 그룹 코포레이션 | 전도성 링크의 레이저 처리 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2469441A (en) * | 1945-03-06 | 1949-05-10 | Wright Aeronautical Corp | Locking plate |
EP0593323A1 (fr) * | 1992-10-15 | 1994-04-20 | Rapid S.A. | Dispositif de maintien d'une pluralité de vis, écrous ou analogues sur une pièce quelconque |
FR2728755A1 (fr) * | 1994-12-23 | 1996-06-28 | Thomson Csf | Transducteur acoustique en anneau precontraint |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3142035A (en) * | 1960-02-04 | 1964-07-21 | Harris Transducer Corp | Ring-shaped transducer |
US4446544A (en) * | 1981-11-30 | 1984-05-01 | The United States Of America As Represented By The Secretary Of The Navy | Small diameter, low frequency multimode hydrophone |
CA1294360C (fr) * | 1988-03-11 | 1992-01-14 | Garfield W. Mcmahon | Transducteur sous-marin |
GB9409133D0 (en) * | 1994-05-09 | 1994-11-30 | Secr Defence | Sonar ring transducer |
FR2786957B1 (fr) * | 1998-12-07 | 2001-02-23 | Sfim Ind | Actionneur piezo-electrique ou electrostrictif |
-
2001
- 2001-06-29 FR FR0108675A patent/FR2826828B1/fr not_active Expired - Lifetime
-
2002
- 2002-06-04 US US10/481,429 patent/US6879090B2/en not_active Expired - Lifetime
- 2002-06-04 DE DE60205627T patent/DE60205627T2/de not_active Expired - Lifetime
- 2002-06-04 EP EP02748930A patent/EP1399273B1/fr not_active Expired - Lifetime
- 2002-06-04 DK DK02748930T patent/DK1399273T3/da active
- 2002-06-04 AT AT02748930T patent/ATE302070T1/de not_active IP Right Cessation
- 2002-06-04 WO PCT/FR2002/001898 patent/WO2003002271A1/fr not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2469441A (en) * | 1945-03-06 | 1949-05-10 | Wright Aeronautical Corp | Locking plate |
EP0593323A1 (fr) * | 1992-10-15 | 1994-04-20 | Rapid S.A. | Dispositif de maintien d'une pluralité de vis, écrous ou analogues sur une pièce quelconque |
FR2728755A1 (fr) * | 1994-12-23 | 1996-06-28 | Thomson Csf | Transducteur acoustique en anneau precontraint |
Also Published As
Publication number | Publication date |
---|---|
DK1399273T3 (da) | 2005-10-17 |
US6879090B2 (en) | 2005-04-12 |
US20040256962A1 (en) | 2004-12-23 |
FR2826828A1 (fr) | 2003-01-03 |
DE60205627T2 (de) | 2006-06-08 |
FR2826828B1 (fr) | 2003-12-12 |
DE60205627D1 (de) | 2005-09-22 |
ATE302070T1 (de) | 2005-09-15 |
EP1399273A1 (fr) | 2004-03-24 |
EP1399273B1 (fr) | 2005-08-17 |
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