EP4115716A1 - Vorrichtung zur schocklagerung von elektronik - Google Patents
Vorrichtung zur schocklagerung von elektronikInfo
- Publication number
- EP4115716A1 EP4115716A1 EP21707967.2A EP21707967A EP4115716A1 EP 4115716 A1 EP4115716 A1 EP 4115716A1 EP 21707967 A EP21707967 A EP 21707967A EP 4115716 A1 EP4115716 A1 EP 4115716A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit board
- electronics
- carrier
- board carrier
- recess
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1434—Housings for electronics exposed to high gravitational force; Cylindrical housings
Definitions
- the invention relates to a device for shock mounting of electronics, in particular for use under water.
- the object of the present invention is therefore to create an improved concept for the shock mounting of electronics.
- Exemplary embodiments show a device for shock mounting of electronics.
- Electronics is understood to be the arrangement and functional interconnection of one or more (electronic) components.
- the interconnection can be made using Conductor tracks are made on a circuit board.
- the device comprises a first and a second circuit board carrier and a circuit board on which the electronics are arranged.
- the circuit board is arranged between the first and the second circuit board carrier.
- the first circuit board carrier has a recess to receive a component of the electronics.
- a damping material is arranged between the first circuit board carrier and the circuit board, the damping material filling a gap between the first circuit board carrier and the circuit board, in particular the electronic component.
- the damping material absorbs forces that act on the circuit board carrier and only passes them on in a weakened form to the circuit board and the components on it. Furthermore, the damping material can improve the dissipation of heat from the electronics to the circuit board carriers.
- the circuit board typically has a large number of electronic components, so that a corresponding number of cutouts can be provided in the circuit board carrier.
- the recess can be individually adapted to the circuit board to be protected, in particular to the components arranged on it.
- the first and the second circuit board carrier are (mechanically) connected to one another in order to enclose the circuit board.
- at least the electronics on the circuit board are enclosed by the first and the second circuit board carrier.
- At least one circuit board carrier can, however, also have a groove into which the circuit board is let so that when the circuit board carriers are connected, only one interface between the first and the second circuit board carrier is visible from the outside.
- the idea is to support the circuit board, which is made of a comparatively soft material and is thus stimulated to vibrate by the shock waves, by means of both circuit board carriers.
- a depth of the recess (s) is accordingly chosen so that the components can be supported on a bottom of the recess. This reduces the load on the electronics and enables them to survive the shock undamaged.
- the circuit board is clamped in a form-fitting manner by the first and the second circuit board carrier.
- the first circuit board carrier forms a contour of the circuit board surface through the recess or a plurality of recesses, into which the circuit board is placed when the first circuit board carrier is connected to the second circuit board carrier.
- the contour is defined by the components arranged on the board.
- the damping element fills the gap.
- the recess is adapted very precisely to the contour, while larger deviations can occur in terms of width. It is thus possible that several (similar) components with the same height can be accommodated in the same recess. This is possible because a load on the electronics in the event of a shock, the shock wave of which acts on the electronics predominantly parallel to the circuit board, is less than a shock, the shock wave of which acts predominantly perpendicular to the circuit board. So the first board carrier can be a negative form of the board. However, this is not to be understood in the sense of a casting mold, but with the restrictions described above with regard to the contour of the board.
- the first circuit board carrier has a second recess.
- the first recess has a first depth and the second recess has a second depth.
- the first depth is advantageously different from the second depth. It is thus possible to protect components with two different heights by means of the first circuit board carrier.
- the negative mold can thus protect two different, in exemplary embodiments also a large number of different components.
- the device has a damping material which is arranged between the first circuit board carrier and the circuit board.
- the damping material fills a gap between the first circuit board carrier and the circuit board.
- the components are thus protected even better against a shock.
- the damping material is advantageously already compressed in the case of connected board carriers if the damping material is used in solid form, in particular as a separate layer. However, this should not be complete compression, but only partial, so that there is reliable contact of the damping material both with the first circuit board carrier and with the electronics and the circuit board.
- a layer of foam, for example, can be used as the damping material. This has the advantage that the circuit board can be removed by releasing the connection between the first and the second circuit board carrier and can thus be exchanged individually.
- the first is connected to the second circuit board carrier
- to fill for example, a plastic or a silicone into the gap between the circuit board and the first circuit board carrier.
- the filling can take place, for example, through a hole in the first and / or the second circuit board carrier.
- a foaming agent can advantageously be added. This prevents the plastic from contracting while it hardens, which could result in tension in the electronics or the circuit board.
- a thickness of the first circuit board carrier is greater than a height of the electronics on the circuit board.
- the thickness of the board carrier as well as the height of the electronics (more precisely the components) is determined perpendicular to the board. This ensures that all components can be supported on the circuit board carrier. Otherwise, the formation of a recess with the necessary depth for a component can result in the circuit board carrier having a through opening. This component could then no longer be supported on the circuit board carrier and the entire electronics is at risk if one component fails in the event of a shock.
- the first and / or the second circuit board carrier has a material whose modulus of elasticity is greater than 50 GPa (Giga Pascal), preferably greater than or equal to 70 GPa.
- the first and / or the second circuit board carrier has a rigidity which is at least as great as the rigidity of the stiffest component of the circuit board. This ensures that the circuit board carriers give the circuit board the necessary stability to withstand the shock.
- the necessary stability can also be achieved by a material with a lower modulus of elasticity if the geometry of the circuit board carrier is adapted accordingly.
- the material of the first and / or the second circuit board carrier can be a metal, for example aluminum or iron.
- Metals, including aluminum and iron, are good heat conductors. This is advantageous because it is therefore over the PCB carrier heat dissipation of the components is possible. In other words, cooling of the electronics can be achieved in this way via the circuit board carrier.
- the circuit board carrier can also give off the heat to the surrounding water via thermal coupling.
- the circuit board also has components on the rear
- the features that relate to the first circuit board carrier can also be transferred to the second circuit board carrier.
- the damping material can also be arranged between the second circuit board carrier and the circuit board independently of further rear components. This improves the damping effect. Furthermore, the board is better clamped by the two board carriers.
- a method for producing a device for shock mounting of electronics is shown with the following steps: providing a circuit board on which the electronics are arranged; Forming a recess in a first circuit board carrier corresponding to the electronics on the circuit board in order to receive a component (in particular the components) of the electronics; Arranging the circuit board between the first circuit board carrier and a second circuit board carrier; Connect the first circuit board carrier to the second circuit board carrier so that the circuit board is completely enclosed.
- FIG. 2 a schematic perspective illustration of exemplary embodiments of the device from FIG. 1 in a simplified exploded drawing
- the device 20 comprises a first circuit board carrier 22, a second circuit board carrier 24 and a circuit board 26 on which the electronics, here exemplarily in the form of a component 28, are arranged.
- the circuit board 26 is arranged between the first circuit board carrier 22 and the second circuit board carrier 24.
- the first circuit board carrier 22 has a recess 30 which receives the component 28 (when the circuit board rests on the first circuit board carrier 22).
- the first and the second circuit board carrier 22, 24 are connected to one another in order to enclose the circuit board 26.
- the recess 30 is shown in dashed lines because it is not visible from the perspective shown.
- the circuit board supports 22, 24 are shown in all figures as a (flat) plate. It should be noted, however, that the circuit board carrier can have any shape, in particular it can also be arched.
- the damping material 36 is arranged between the circuit board 26 and the first circuit board carrier 22.
- the damping material 36 is shown here as a separate layer. This is possible, for example, using a foam.
- the damping material 36 can, however, also be filled into the connected circuit board carriers 22, 24 in initially liquid form and then harden in order to fill gaps between the circuit board or the components and the circuit board carrier 22.
- the damping material 36 is arranged between the circuit board 26 and the first circuit board carrier 22.
- the damping material 36 is shown here as a separate layer. In the form shown as a layer, however, the damping material 36 can only be deformed to a limited extent without losing its damping properties. Thus, the layer can rest on the first and the second component 28a, 28b and is pressed into the recess 30a when the two circuit board carriers 22, 24 are connected to one another. This is possible because the two components 28a, 28b are flat.
- the (water) sound transducers are designed for use under water, especially in the sea.
- the sound transducers are designed to convert water-borne sound into an electrical signal (e.g. voltage or current) corresponding to the sound pressure, the water-borne sound signal.
- the sound transducers are designed to convert an applied electrical voltage into water-borne sound.
- the sound transducers can accordingly be used as water-borne sound converters and / or as water-borne sound transmitters.
- the sound transducers have a piezoelectric material, for example a piezoceramic, as the sensor material.
- the transducers can be used for (active and / or passive) sonar (sound navigation and ranging).
- the sound transducers are not suitable for medical applications.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020202777.3A DE102020202777A1 (de) | 2020-03-04 | 2020-03-04 | Vorrichtung zur Schocklagerung von Elektronik |
| PCT/EP2021/054458 WO2021175664A1 (de) | 2020-03-04 | 2021-02-23 | Vorrichtung zur schocklagerung von elektronik |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4115716A1 true EP4115716A1 (de) | 2023-01-11 |
Family
ID=74732925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21707967.2A Pending EP4115716A1 (de) | 2020-03-04 | 2021-02-23 | Vorrichtung zur schocklagerung von elektronik |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4115716A1 (de) |
| DE (1) | DE102020202777A1 (de) |
| WO (1) | WO2021175664A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112831A1 (de) * | 1991-04-19 | 1992-10-22 | Diehl Gmbh & Co | Abstuetzeinrichtung fuer funktionsbauteile |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285559A (en) | 1992-09-10 | 1994-02-15 | Sundstrand Corporation | Method and apparatus for isolating electronic boards from shock and thermal environments |
| US6365244B1 (en) | 1997-11-04 | 2002-04-02 | Honeywell International, Inc. | Method for heat absorption using polyoxymethylene polymer compositions |
| DE19850153B4 (de) | 1998-10-30 | 2005-07-21 | Siemens Ag | Halbleiter-Schaltungsanordnung, insbesondere Hochstromumrichter mit niedriger Zwischenkreisspannung |
| DE10123996A1 (de) | 2001-05-17 | 2002-11-21 | Bosch Gmbh Robert | Gehäuse zur Aufnahme einer elektronischen Einheit |
| US7357886B2 (en) * | 2003-10-31 | 2008-04-15 | Groth Lauren A | Singular molded and co-molded electronic's packaging pre-forms |
| DE102009045915A1 (de) | 2009-10-22 | 2011-04-28 | Robert Bosch Gmbh | Toleranzfreie Leiterplattenklemmung |
| DE202010018233U1 (de) * | 2010-08-08 | 2015-01-21 | Ssb Wind Systems Gmbh & Co. Kg | Elektrische Vorrichtung |
-
2020
- 2020-03-04 DE DE102020202777.3A patent/DE102020202777A1/de active Pending
-
2021
- 2021-02-23 EP EP21707967.2A patent/EP4115716A1/de active Pending
- 2021-02-23 WO PCT/EP2021/054458 patent/WO2021175664A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112831A1 (de) * | 1991-04-19 | 1992-10-22 | Diehl Gmbh & Co | Abstuetzeinrichtung fuer funktionsbauteile |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021175664A1 (de) | 2021-09-10 |
| DE102020202777A1 (de) | 2021-09-09 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TKMS ATLAS ELEKTRONIK GMBH Owner name: THYSSENKRUPP AG |
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| 17Q | First examination report despatched |
Effective date: 20250724 |