EP3625587A1 - Module électronique - Google Patents

Module électronique

Info

Publication number
EP3625587A1
EP3625587A1 EP18714488.6A EP18714488A EP3625587A1 EP 3625587 A1 EP3625587 A1 EP 3625587A1 EP 18714488 A EP18714488 A EP 18714488A EP 3625587 A1 EP3625587 A1 EP 3625587A1
Authority
EP
European Patent Office
Prior art keywords
housing
housing cover
electronic components
assembly according
filling element
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.)
Withdrawn
Application number
EP18714488.6A
Other languages
German (de)
English (en)
Inventor
Dirk Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3625587A1 publication Critical patent/EP3625587A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details

Definitions

  • the invention relates to an electronic assembly, in particular a
  • an electronic assembly with the features of the preamble of claim 1 in the form of an ultrasonic sensor is known.
  • the known assembly comprises a housing for receiving arranged on a circuit board electronic components of the
  • Ultrasonic sensor wherein the interior of the housing is filled with a filling material in the form of a waterproof adhesive, which simultaneously
  • Inner space seals against the entry of media, so that it can be dispensed with a separate housing cover for closing the interior of the housing.
  • Interior arranged filling material can be dispensed with, that it comes through the trapped in the interior air volume with temperature fluctuations to changes in air pressure, which can cause it to
  • Compensation flows may come through insufficiently sealed locations of the housing, in particular by strands of leads for electrical contacting of the electronic assembly. In the presence of water or moisture even water or moisture in the
  • Closing housing cover prevents the entry of media into the interior during temperature changes or air pressure fluctuations.
  • the invention is based on the idea by minimizing the trapped air volume in the housing, the effects of Temperaturg. To minimize pressure fluctuations.
  • the housing of the electronic assembly a the interior
  • Housing element of the housing is connected, and that a filling element is formed by at least one separate from the housing cover molding.
  • the filling element is formed by the housing cover itself.
  • the filling element has on the electronic components
  • Such a trained electronic assembly also has the advantage that can be dispensed with the necessary compared to the prior art when using a filling filling the interior with a liquid medium, so for example by not required
  • Curing the manufacturing process can be made faster or cheaper.
  • the housing cover is formed as an injection molded part and forms on the electronic components side facing receiving areas for the electronic components, in which the components preferably with only a small gap or in
  • the housing cover on the side facing away from the electronic components also has a shape or arrangement of the electronic components at least partially adapted shape, so that the wall thickness of the housing cover is almost constant.
  • Such an embodiment also has the advantage, depending on the application, that the
  • Injection molding process for the production of the housing cover can be used particularly well with high quality of the housing cover and low reject rate.
  • the filling element by at least one molded body made of plastic.
  • Such, in particular rigidly formed moldings may for example be formed as an insert in the interior of the housing, i. as a separate component from the housing cover. It can also be provided, this separate element with the housing cover
  • a further alternative in the formation of the filling element by at least one shaped body provides that the at least one shaped body consists of a flexible material, in particular of a foam material.
  • a design of the molded body has the particular advantage that it is arranged by a corresponding dimensioning of the molded body of this in direct contact with the electronic components, so that a minimization of the trapped in the interior air volume can be achieved.
  • it allows the use of a flexible material, with regard to the arrangement of the electronic components in the interior allow for larger tolerances, since the flexible material is elastically deformed, for example, in contact with the electronic components.
  • a molded body made of a foam material has the further advantage that upon elastic deformation of the foam material, an additional mechanical fixation or vibration damping of the electronic components in the interior of the housing can be achieved, and that by the elastic deformation of the foam material located in the foam material volume of air is minimized.
  • the housing cover is glued to the housing element to form the housing.
  • FIG. 1 shows a longitudinal section through an electronic assembly in the form of a
  • Fig. 2 is a partial longitudinal section through a structural unit when using a
  • Housing cover whose shape is adapted to minimize the air volume located in the interior.
  • FIG. 1 an electronic unit 10 in the form of an ultrasonic sensor or ultrasonic transducer 100 is shown in longitudinal section, as he as
  • Component of a driver assistance system is used in a vehicle for determining distances and is arranged in particular in the region of a bumper of the vehicle.
  • the electronic assembly 10 or the ultrasonic transducer 100 has, in a known manner, a multi-part housing 12 which, for example, comprises a housing element 13 produced by injection molding to form an interior 14.
  • the housing member 13 is closable with a housing cover 15, wherein the housing cover 15 is preferably also made as an injection molded part made of plastic.
  • the housing cover 15 has on the side facing the housing element 13 in an edge region a circumferential receiving groove 16 in which a receiving web 17 of the housing element 13, which has the same configuration, protrudes. To form a media-tight connection between the housing element 13 and the
  • Housing cover 15 is also exemplary in the area of the receiving groove 16 adhesive 18 for bonding the housing cover 15 with the
  • Housing member 13 is arranged so that the interior 14 of the housing 12 is sealed from the entry of media.
  • the housing member 13 On the side facing away from the housing cover 15 side of the housing member 13, the housing member 13 by means of a compensating element 21 and a
  • the region of the diaphragm pot 25 is filled with not shown damping foam.
  • the piezoceramic 26 is electrically contacted via (bond) wires 27 with connection pins 28, wherein in the representation of FIG. 1 only a wire 27 and a connection pin 28 can be seen, since the wires 27 or connection pins 28 are perpendicular to the plane of FIG. 1 are arranged.
  • the connection pins 28 are in turn electrically contacted with a circuit carrier 30 arranged in the interior 14 of the housing 12 in the form of a printed circuit board.
  • Circuit carrier 30 has an electronic circuit with a plurality of different electronic components 31, 32, wherein in the Representation of the figure, only some of the components 31, 32 are provided with the corresponding reference numerals.
  • the circuit carrier 30 is contacted via further connection pins 34, which open in the region of a connector plug 33, with a harness of the vehicle, not shown.
  • a filling element 35 is arranged in the interior 14 of the housing 12.
  • the filling element 35 consists in that shown in FIG.
  • the shaped body 37 has a cup-like receiving region 38 for the component 32, the receiving region 38 being adapted to the shape of the component 32.
  • the two shaped bodies 36, 37 are glued or welded to the housing cover 15, for example by ultrasonic welding.
  • plastic molded body 36, 37 or the filling element 35 made of a (elastic deformable)
  • Foam material exists, so that it may in particular happen that the filling element 35 or the moldings 36, 37 rests under elastic deformation on the components 31, 32.
  • the housing cover 15a itself is the filling element 35a designed to minimize the volume of air in the interior 14a.
  • the housing cover 15a also to have a shape adapted to the shape or the arrangement of the components 31, 32 on the outside 40 facing away from the interior 14, so that the cover element 15a is at least approximately constant at all times
  • Wall thickness s has.
  • the electronic assembly 10 or the ultrasonic transducer 100 described so far can be modified or modified in many ways without deviating from the inventive concept.
  • it can
  • the filling element 35 does not completely fill the volume located in the interior 14, but only
  • the filling element 35 does not have to be in the range of each
  • Component 31, 32 may be arranged or may have different distances to the components 31, 32. Also, the use of a specially shaped housing cover 15a as in FIG. 2 in combination with
  • additional moldings 36, 37 be it plastic or out
  • the invention should not be limited to ultrasonic transducers 100, but in principle is transferable to any electronic components 10, in which by a trapped by a housing 12 volume of air, the risk of entry of media the interior 14 in Heiltik- or temperature fluctuations consists.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Casings For Electric Apparatus (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un module électronique (10), en particulier un dispositif de détection, comprenant un boîtier (12) rendu étanche contre l'entrée de milieux, des composants électroniques (31, 32) disposés dans un espace intérieur (14, 14a) du boîtier (12) et un élément de remplissage (35, 35a) qui s'étend au moins quasiment jusqu'aux composants électroniques (31, 32) ou se trouve en contact d'appui avec ceux-ci.
EP18714488.6A 2017-05-18 2018-03-28 Module électronique Withdrawn EP3625587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017208352.2A DE102017208352A1 (de) 2017-05-18 2017-05-18 Elektronische Baueinheit
PCT/EP2018/057867 WO2018210474A1 (fr) 2017-05-18 2018-03-28 Module électronique

Publications (1)

Publication Number Publication Date
EP3625587A1 true EP3625587A1 (fr) 2020-03-25

Family

ID=61832500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18714488.6A Withdrawn EP3625587A1 (fr) 2017-05-18 2018-03-28 Module électronique

Country Status (4)

Country Link
EP (1) EP3625587A1 (fr)
CN (1) CN110678779A (fr)
DE (1) DE102017208352A1 (fr)
WO (1) WO2018210474A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018126596B4 (de) * 2018-10-25 2021-09-16 Valeo Schalter Und Sensoren Gmbh Ultraschallsensor mit Deckel zur Reduktion des Freiraums

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000585A1 (de) * 1990-01-10 1991-07-11 Wolfgang Brunner Messgeber
US5009311A (en) * 1990-06-11 1991-04-23 Schenk Robert J Removable rigid support structure for circuit cards
DE19755408A1 (de) * 1997-12-12 1998-12-03 Braun Ag Baueinheit zum Einbau in ein elektrisches Gerät
JP4394648B2 (ja) * 2004-01-13 2010-01-06 大成プラス株式会社 ジャンクション用電装品とその製造方法
DE102009022187A1 (de) * 2009-05-20 2010-11-25 Valeo Schalter Und Sensoren Gmbh Ultraschallsensor und/oder Ultraschallwandler in einem geschlossenen Gehäuse und ein Herstellungsverfahren
DE102009046144A1 (de) * 2009-10-29 2011-05-19 Robert Bosch Gmbh Ultraschallwandler zum Einsatz in einem fluiden Medium
DE102013211593A1 (de) * 2013-06-20 2014-12-24 Robert Bosch Gmbh Umfeldsensiereinrichtung mit modularem Ultraschallwandler, und Kraftfahrzeug mit einer derartigen Umfeldsensiereinrichtung
DE102013022063A1 (de) * 2013-12-23 2015-06-25 Valeo Schalter Und Sensoren Gmbh Verfahren zum Herstellen eines Ultraschallsensors für ein Kraftfahrzeug
CN105093228A (zh) 2014-05-08 2015-11-25 光宝科技股份有限公司 超声波感测模块

Also Published As

Publication number Publication date
CN110678779A (zh) 2020-01-10
WO2018210474A1 (fr) 2018-11-22
DE102017208352A1 (de) 2018-11-22

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