EP1040365A1 - Ultrasound sensor - Google Patents
Ultrasound sensorInfo
- Publication number
- EP1040365A1 EP1040365A1 EP98965114A EP98965114A EP1040365A1 EP 1040365 A1 EP1040365 A1 EP 1040365A1 EP 98965114 A EP98965114 A EP 98965114A EP 98965114 A EP98965114 A EP 98965114A EP 1040365 A1 EP1040365 A1 EP 1040365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- ultrasonic sensor
- hood
- sensor according
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002604 ultrasonography Methods 0.000 title abstract description 9
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 5
- 238000004382 potting Methods 0.000 description 2
- AOSZTAHDEDLTLQ-AZKQZHLXSA-N (1S,2S,4R,8S,9S,11S,12R,13S,19S)-6-[(3-chlorophenyl)methyl]-12,19-difluoro-11-hydroxy-8-(2-hydroxyacetyl)-9,13-dimethyl-6-azapentacyclo[10.8.0.02,9.04,8.013,18]icosa-14,17-dien-16-one Chemical compound C([C@@H]1C[C@H]2[C@H]3[C@]([C@]4(C=CC(=O)C=C4[C@@H](F)C3)C)(F)[C@@H](O)C[C@@]2([C@@]1(C1)C(=O)CO)C)N1CC1=CC=CC(Cl)=C1 AOSZTAHDEDLTLQ-AZKQZHLXSA-N 0.000 description 1
- 229940126657 Compound 17 Drugs 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
Definitions
- the invention relates to an ultrasonic sensor, consisting of a housing with a plug connection, an ultrasonic transducer and a printed circuit board.
- Ultrasonic sensors that are used in the automotive industry for distance measurement are usually sealed with a casting compound against harmful external influences. For this purpose, the sensors are cast in a complex riser casting process and cured in the oven. In modern ultrasonic sensors, pot-like ultrasonic transducers are often used, which consist of an annular wall and a membrane-like bottom.
- the object of the present invention is to provide an ultrasonic sensor which is compact and which can be assembled and cast easily and cheaply.
- the housing is divided into a carrier and a hood enclosing the carrier and in that the carrier the circuit board, the plug connection and carries the ultrasound transducer.
- the ultrasonic sensor is completely filled with sealing compound and is leakproof. It is therefore protected against external influences.
- a further advantageous embodiment of the ultrasonic sensor according to the invention is that the printed circuit board mounted on the carrier with switching elements is accessible from both sides when the hood is not yet installed.
- the circuit on the circuit board can thus be easily compared and checked and any corrections made easily.
- the carrier has an annular receptacle for the ultrasound transducer and that the plug connection is formed on the carrier, the plug connection being connected to the receptacle by webs.
- the carrier can thus be fitted very easily since the parts of the ultrasonic sensor that have already been installed are fixed to the carrier during the assembly of the remaining parts.
- Another advantageous embodiment of the invention is that two webs are formed laterally on the carrier and the circuit board is mounted between them. This makes the ultrasonic sensor very compact and the circuit board is mechanically well protected.
- the hood is pushed over the carrier along the webs.
- the casting process is simplified because the hood remains fixed during the casting and does not slip can.
- the hood itself is open on two abutting sides. This eliminates the time-consuming process of potting cast conventional sensors; after assembly, the ultrasonic sensor can easily be cast from above.
- Another advantageous embodiment of the invention is that an open side of the hood is closed by a flange formed on the carrier. This simplifies production, since the casting compound does not require any further shape during curing. In addition, there is a mechanically durable connection.
- the ultrasonic transducer is fixed to the carrier with a cap. This also makes assembly easier, since the ultrasound transducer is fixed, and provides a sealed connection to the carrier.
- Fig. 2 shows the pre-assembled ultrasonic sensor before pushing the hood onto the carrier
- Fig. 3 shows the finished ultrasonic sensor. Identical parts are provided with the same reference symbols in the figures. The figures show the embodiment in different assembly states. The emission and reception side is on the left.
- the illustrated ultrasonic sensor consists of an ultrasonic transducer 1 with an elastic decoupling ring 2 and a cap 3.
- the transducer itself contains a mechanism with which ultrasonic waves can be generated and received from electrical signals and converted into electrical signals. Since the ultrasound transducer is a sensitive, oscillating system, it must be decoupled from the rest of the ultrasound sensor and stored in the ultrasound sensor in a vibration-damped manner.
- the decoupling ring 2 is provided for this. In addition to the sealing function, it also dampens unwanted vibrations.
- the carrier 4 consists of a plug connection 5, an annular receptacle 6 for the ultrasonic transducer 1 with a latching groove 7 for the cap 3 and two connecting webs 8 which connect the receptacle 6 of the ultrasonic transducer 1 with the plug connection 5.
- the ultrasonic transducer 1 is fastened with the cap 3 in its receptacle 6 on the carrier 4.
- the circuit board 9 is with the connecting lines of the ultrasonic transducer 12 and Plug connection 13 connected and fixed in the carrier 4.
- the hood 10 is pushed over the carrier 4 and the ultrasonic sensor is completely filled with sealing compound, so that it becomes tight against environmental influences.
- the potting compound 17 (Fig. 3) fills all cavities in the ultrasonic transducer and around the circuit board and ensures a mechanically durable and sealed encapsulation of the ultrasonic sensor.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19755729 | 1997-12-15 | ||
DE19755729A DE19755729A1 (en) | 1997-12-15 | 1997-12-15 | Ultrasonic sensor |
PCT/DE1998/003655 WO1999031526A1 (en) | 1997-12-15 | 1998-12-14 | Ultrasound sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1040365A1 true EP1040365A1 (en) | 2000-10-04 |
EP1040365B1 EP1040365B1 (en) | 2003-07-09 |
Family
ID=7851989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98965114A Expired - Lifetime EP1040365B1 (en) | 1997-12-15 | 1998-12-14 | Ultrasound sensor |
Country Status (4)
Country | Link |
---|---|
US (1) | US6532193B1 (en) |
EP (1) | EP1040365B1 (en) |
DE (2) | DE19755729A1 (en) |
WO (1) | WO1999031526A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10000924B4 (en) * | 2000-01-12 | 2011-11-24 | Volkswagen Ag | ultrasonic sensor |
US6982532B2 (en) * | 2003-12-08 | 2006-01-03 | A. O. Smith Corporation | Electric machine |
DE102005009620A1 (en) * | 2005-02-23 | 2006-08-31 | Valeo Schalter Und Sensoren Gmbh | Ultrasound sensor, for vehicle parking assistance apparatus, has separate coupling housing for electrical connector, allowing sensor housing to be combined with different coupling housings |
JP4438667B2 (en) * | 2005-03-29 | 2010-03-24 | 株式会社デンソー | Ultrasonic sensor and ultrasonic transducer |
DE102006007710A1 (en) * | 2006-02-14 | 2007-08-23 | Valeo Schalter Und Sensoren Gmbh | Sensor holder, in particular for mounting distance sensors on vehicle parts |
DE102006040344B4 (en) | 2006-08-29 | 2022-09-29 | Robert Bosch Gmbh | Holding device for an ultrasonic transducer |
JP5386910B2 (en) * | 2008-09-26 | 2014-01-15 | 株式会社デンソー | Electronic circuit equipment |
JP5607990B2 (en) * | 2010-05-14 | 2014-10-15 | パナソニック株式会社 | Ultrasonic sensor |
US8982578B2 (en) * | 2010-10-14 | 2015-03-17 | Tyco Electronics Corporation | Connector system and assembly having integrated protection circuitry |
JP2012198106A (en) * | 2011-03-22 | 2012-10-18 | Panasonic Corp | Ultrasonic sensor |
DE102017204600A1 (en) * | 2017-03-20 | 2018-09-20 | Robert Bosch Gmbh | A connector for connecting two housing parts and housings comprising two housing parts and at least one connector |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4281404A (en) | 1979-08-27 | 1981-07-28 | Morrow Electronics, Inc. | Depth finding apparatus |
JPH0453586Y2 (en) | 1986-02-21 | 1992-12-16 | ||
DE3621819C2 (en) | 1986-06-28 | 1995-05-18 | Mpv Mes Und Prueftechnik Vogt | Method and device for measuring airborne sound |
US4745893A (en) * | 1986-12-03 | 1988-05-24 | Caterpillar Inc. | Digital oil level sensor |
DE3933474C2 (en) * | 1989-10-06 | 1994-01-27 | Endress Hauser Gmbh Co | Level measuring device |
DE4329055A1 (en) * | 1993-08-28 | 1995-03-02 | Teves Gmbh Alfred | Pressure-tight converter for motor vehicles |
US5659423A (en) * | 1994-09-30 | 1997-08-19 | Donnelly Corporation | Modular variable reflectance mirror assembly |
US5617866A (en) | 1996-01-05 | 1997-04-08 | Acuson Corporation | Modular transducer system |
DE29603390U1 (en) | 1996-02-24 | 1997-06-26 | Robert Bosch Gmbh, 70469 Stuttgart | Electronic control unit |
-
1997
- 1997-12-15 DE DE19755729A patent/DE19755729A1/en not_active Withdrawn
-
1998
- 1998-12-14 EP EP98965114A patent/EP1040365B1/en not_active Expired - Lifetime
- 1998-12-14 WO PCT/DE1998/003655 patent/WO1999031526A1/en active IP Right Grant
- 1998-12-14 DE DE59809001T patent/DE59809001D1/en not_active Expired - Lifetime
- 1998-12-14 US US09/581,957 patent/US6532193B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9931526A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1040365B1 (en) | 2003-07-09 |
DE59809001D1 (en) | 2003-08-14 |
US6532193B1 (en) | 2003-03-11 |
DE19755729A1 (en) | 1999-06-17 |
WO1999031526A1 (en) | 1999-06-24 |
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