DE102009045607A1 - Printed circuit board for a control device and corresponding control device, in particular for personal protective equipment in a vehicle - Google Patents

Abstract

The invention relates to a circuit board (20) for a control device, in particular for personal protection equipment of a vehicle, for receiving electrical components (28), and a corresponding control device, in particular for personal protection equipment in a vehicle, with such a circuit board (20). According to the invention, the circuit board (20) is designed with a combined layout, which enables the optional installation of a 90 ° plug connector (22) or a 180 ° pin connector as part of an interface (60) for electrically connecting the circuit board (20) to other components .

Description

State of the art

The invention relates to a printed circuit board for a control device and a corresponding control device, in particular for personal protective equipment in a vehicle, according to the preamble of the independent claims.

In the utility model DE 201 12 595 U1 a housing is described for receiving a printed circuit board with electronic components. The housing described consists of a generally cuboid hood made of plastic, which has a plug collar for interfacing with other vehicle components on one of its narrow legs, and a bottom plate closing the hood, wherein the plug collar is mounted so that a plug to the housing parallel to the circuit board surface is inserted into it. The circuit board is mechanically and electrically connected to at least three of the four corners of the hood with metallic mounting sockets, wherein the hood has at these corners depending on a mounting flange and the mounting sockets are anchored in the mounting flanges of the hood. Perpendicular to the mounting flanges, the hood has indentations that facilitate access by a tool to mounting screws that are inserted through the mounting bushes to secure the housing to a vehicle body.

Disclosure of the invention

The printed circuit board according to the invention for a control unit or the control unit according to the invention, in particular for personal protection means of a vehicle, with the features of the independent claims have the advantage that a simple and quick adaptation of the circuit board and the control unit to different installation conditions in the vehicle is made possible. The inventive combined layout on the circuit board advantageously allows the optional installation of a 90 ° connector strip or a 180 ° pin header. The interface is advantageously applied to the circuit board. This interface is then ready via an opening in a side wall or in the plastic cover for electrical connection to a mating connector. The ability to adapt to different interface concepts customer acceptance can be increased in an advantageous manner.

Embodiments of the invention advantageously allow the installation of a simple and cost-effectively manufactured control unit in the vehicle, which can be adapted to the given installation conditions substantially independent of the installation location, wherein the interface concept in the vehicle, d. H. the use of a 90 ° connector strip or a 180 ° pin header is specified. Depending on the installation conditions, the printed circuit board can have a 90 ° plug connector with a corresponding opening in the side wall or a 180 ° pin connector with a corresponding opening in the plastic cover. The use of the 180 ° pin strip with the corresponding opening in the plastic lid advantageously makes it possible for the at least one interface to enable the electrical connection in the direction of assembly. This assembly direction is perpendicular to the circuit board, d. H. the assembly direction pierces the circuit board as a plane. This makes the interface easier to run. The use of the 90 ° connector strip with the corresponding opening in a side wall, allows an electrical connection via a plug in the plane of the circuit board and facilitates the drip water protection of the control unit.

The measures and refinements recited in the dependent claims advantageous improvements of the independent claim 1 printed circuit board and the specified in the independent claim 7 controller, in particular for personal protection means of a vehicle are possible.

It is particularly advantageous that the 90 ° connector strip and / or the 180 ° pin strip can be fixed to the printed circuit board by means of through-hole soldering, reflow soldering, through hole reflow soldering or press-fit technology.

In an embodiment of the printed circuit board according to the invention, the 90 ° connector strip on a predetermined number of connector pins, which implement a 90 ° deflection between the surface of the circuit board and the 90 ° connector. The connector pins are manufactured as stamped parts. This advantageously allows a cost-effective production.

In a further embodiment of the circuit board according to the invention, the connector pins each have two contacting sections, a bridging section and a deflection section. For example, a first number of male pins has a bridging portion of a first length and a second number of male pins has a bridging portion of a second length, and the bridging portion of the second length is shorter than the bridging portion of the first length. Here, the first number of connector pins and the second number of connector pins are guided by a receiving comb alternately arranged in the 90 ° connector. By using connector pins with different length bridging sections is it is advantageously possible to realize multi-row connector strips.

The control device according to the invention comprises at least one circuit board according to the invention for receiving electrical components, a plastic lid with molded side walls and a plastic bottom, which form a housing of the controller and between which the at least one circuit board is arranged, wherein at least one interface for an electrical connection with at least a further vehicle component is provided on the at least one printed circuit board.

In an embodiment of the control device according to the invention, the plastic lid and / or a side wall at least one opening for the preparation of the electrical connection to the circuit board, wherein the at least one opening in the plastic lid, the electrical connection with the 180 ° pin header in the assembly direction and / or at least an opening in the side wall allows the electrical connection with the 90 ° plug bar parallel to the surface of the circuit board. The plastic cover is advantageously formed in an installation of the 180 ° pin strip as an electrical interface so that the at least one opening and the at least one 180 ° pin strip are positioned for an electrical connection and / or the side wall is in an installation of the 90th ° plug connector designed as an interface in an advantageous manner so that the at least one opening and the at least one 90 ° plug connector are positioned for an electrical connection. The plastic lid and the plastic bottom are designed so that they fit together while the at least one circuit board with record. When assembled, the control unit is drip-proof, provided that the mating connector has been applied to the interface through the opening in the plastic lid or through the opening in the side wall. The assembly direction depends on the interface concept used. The water resistance can still be improved by seals that surround the mating connector in the assembled state. The seals are mounted in the opening. The opening in the plastic cover or in the side wall has a rectangular or other shape to include the mating connector as closely as possible.

In a further embodiment of the control device according to the invention, a plurality of connection arrangements connect the plastic cover, the plastic bottom and the at least one printed circuit board to one another, wherein two first connection arrangements additionally enable a frictional connection to an adapter plate and / or a vehicle body. By using only a maximum of two first connection arrangements for fastening the control unit to the adapter plate and / or the vehicle body, the costs for the control unit can be further reduced.

It is particularly advantageous that at most two first connecting means for the non-positive assembly of the plastic lid of the plastic bottom and the at least one circuit board are used. As at most two first connection means, for example screws but also rivets, clamps or other non-positive connection means are possible for. B. also nuts on studs. Usually, the at most two first connection means for the frictional connection with the vehicle body must protrude beyond the housing bottom or housing cover in order to connect to the adapter plate.

Because the frictional assembly of the control unit is carried out only with the attachment to the adapter plate and / or the vehicle body, it is possible to provide a prefixing of the plastic lid of the plastic base and the circuit board. This pre-fixing can be achieved with second connecting means, which are designed simpler than the at most two first connecting means which serve for frictional assembly and for connection to the adapter plate. Examples of this are clips, etc. However, it is also a pre-fixing with the maximum of two first connection means possible.

Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description.

Brief description of the drawings

1 shows a schematic perspective view of a first embodiment of a control device with a first embodiment of a circuit board according to the invention.

2 shows a schematic perspective view of a housing bottom with the first embodiment of the circuit board according to the invention.

3 shows a schematic perspective view of a section of the first embodiment of the circuit board according to the invention.

4 shows a schematic side view of the first embodiment of the circuit board according to the invention.

5 shows a schematic perspective exploded view of a second Embodiment of a control device with a second embodiment of a circuit board according to the invention.

6 shows a schematic perspective view of the second embodiment of the circuit board according to the invention.

7 shows a schematic side view of the second embodiment of the circuit board according to the invention.

Embodiments of the invention

1 shows a first embodiment of a control device 1 with a first embodiment of a circuit board according to the invention 20 in a prefixed state prior to attachment to an adapter plate 50 , 2 shows a case back 30 with the first embodiment of the circuit board 20 for the in 1 illustrated control unit 1 , 3 shows an enlarged section of the first embodiment of the circuit board according to the invention 20 , 4 shows the side view of the first embodiment of the circuit board according to the invention 20 ,

In the illustrated first embodiment, the controller 1 for personal protective equipment of a vehicle uses and processes sensor signals such as acceleration signals and generates depending on them control signals for the personal protective equipment. Personal protective equipment means active and passive personal protective equipment. These include passive personal protection devices, such as airbags. Belt tensioners, crash-active headrests or crash-active other seat components, but also pedestrian protection and also brakes and a vehicle dynamics control.

How out 1 to 4 can be seen includes the first embodiment of the controller 1 at least one printed circuit board 20 with electronic components 28 , a plastic lid 11 with molded side walls 12 and the plastic floor 30 which a housing 10 of the control unit 1 form and between which the at least one circuit board 20 is arranged. Four locking connections 46 of which in 1 only one is visible, each include one on the housing bottom 30 molded latch 32 and one on a side wall 12 molded latching clip 18 and cause an in 1 illustrated prefixing of the plastic lid 11 , the plastic floor 30 and the at least one circuit board 20 together. For non-positive connection of the at least one circuit board 20 with the case back 30 and the housing cover 11 and for non-positive attachment to the adapter plate 50 are two first connection arrangements 40 available.

How out 1 to 4 further can be seen, the housing has 10 approximately in the middle of two side walls 12 one mounting flange each 14 with a mounting hole 15 on, in which a mounting socket 42 is anchored. The mounting sockets 42 protrude through the circuit board 20 trained assembly openings 26 , while also in the case back 30 corresponding mounting bushes 42 in corresponding mounting holes 34 anchored, how out 2 is apparent. Vertically over the mounting flanges 14 shows the case 10 indentations 13 put on a tool access to the in the mounting sockets 42 used fastening screws 44 enable. In the adapter plate 50 are first mounting holes 56 for fastening the housing 10 on the adapter plate 50 and second attachment openings 53 for fastening the adapter plate 50 introduced on the vehicle. Here are the first and second mounting holes 56 . 53 arranged so that a mounting geometry of the housing 10 is adapted with at most two attachment points to a Fahrzeugbefestigungsgeometrie with at least three attachment points. In the illustrated embodiment, two attachment points of the housing 10 adapted to three attachment points of Fahrzeugbefestigungsgeometrie. Here are the first mounting holes 56 in a basic body 52 the adapter plate 50 brought in. The second mounting holes 53 are in fastening straps 54 introduced, each with a compensation slope 55 with the main body 52 are connected. To the positioning of the housing 10 on the adapter plate 50 to facilitate, is at the base body 52 a circumferential characteristic 58 educated. For screwing in the fastening screws 44 are in the first mounting holes 56 appropriate thread introduced. In the illustrated embodiment, the adapter plate 50 manufactured as sheet metal stamping, with the formation of the expression 58 and the compensation slopes 55 appropriate forming operations are performed.

The at least one printed circuit board 20 is a substrate with electrical connections on the electrical and electronic components 28 and a power strip 22 are applied, wherein the electrical connections of these electronic and electrical components 28 . 22 connect with each other. It is possible that on the at least one circuit board 20 an accident sensor, such as an acceleration sensor or structure-borne sound sensor of an evaluation circuit such as a microcontroller and a drive circuit for generating the drive signals are provided. Further for the operation of the control unit 1 Required components may be on this circuit board 20 be attached. The circuit board 20 is particularly configured for SMD components and therefore has only holes for mounting the circuit board 20 or fixation on the plastic floor in conjunction with the Plastic lid on and takes the various electrical components 28 and the power strip 22 on which the connection with the interface 60 in the sidewall 12 manufactures. The attachment can be done by soldering or gluing or Einpressprozesse. Also a clamp connection is possible. The components 28 and also the power strip 22 for example, by a so-called reflow process on the circuit board 20 fixed and thus soldered. The power strip 22 is in this case trained in SMD technology. This means that both fluid and non-positive connections of the electrical components 22 . 28 on the circuit board 20 possible. The circuit board 20 can be made of a plastic, a ceramic or other suitable insulating materials, wherein metallizations usually as electrical connections between the components 22 . 28 serve. However, other substances are possible that allow electrical connections.

According to the invention, the printed circuit board is designed with a combined layout which allows an optional installation of a 90 ° male connector or a 180 ° male connector as part of an interface for the electrical connection of the printed circuit board to other components.

In the illustrated first embodiment are on the circuit board 20 as an interface 60 a 90 ° connector 22 and a plug receptacle 16 arranged to the control unit 1 electrically connect with other vehicle systems. The 90 ° connector 22 can by means of through-hole soldering, reflow soldering, Through Hole Reflow Soldering or press-fitting on the circuit board 20 be attached. For the plug receptacle 16 is in a sidewall 12 a corresponding recess provided which by a to the housing cover 11 molded supernatant 19.1 and one on the side wall 12 molded supernatant 19.2 protected against splashing water. The supernatants 19.1 . 19.2 also fulfill a guiding or positioning function when a plug, not shown, in the plug receptacle 16 is introduced. The opening in the side wall 12 allows electrical connection with the 90 ° connector 22 parallel to the surface of the circuit board 20 where the side wall 12 is formed so that the at least one opening and the at least one 90 ° connector strip 22 are positioned for an electrical connection.

As in particular from 3 and 4 can be seen has the 90 ° connector 22 a predetermined number of connector pins 24 . 25 on which a 90 ° deflection between the surface of the circuit board 20 and the 90 ° connector 22 implement. Advantageously, the connector pins 24 . 25 manufactured as cost-effective stamped parts. The plug pins 24 . 25 each have two contacting sections 24.1 . 24.4 . 25.1 . 25.4 , a bridging section 24.2 . 25.2 and a deflection section 24.3 . 25.3 on. To enable a multi-row connector strip has a first number of connector pins 24 a bridging section 24.2 with a first length, and a second number of connector pins 25 has a bridging section 25.2 with a second length that is shorter than the first length. How out 3 It can be seen further that the first number of connector pins 24 and the second number of connector pins 25 guided by a pick-up comb 22.1 alternately in the 90 ° connector 22 arranged.

5 shows a second embodiment of a control device 1' with a second embodiment of a circuit board according to the invention 20 ' which is also on the adapter plate 50 can be attached. In contrast to the first control unit 1 , know the illustrated second control unit 1' one in the housing cover 11 ' arranged plug receptacle 16 ' on. 6 shows the second embodiment of the circuit board 20 ' for the in 5 illustrated control unit 1' , 4 shows the schematic side view of the second embodiment of the circuit board according to the invention 20 ' ,

How out 5 it can be seen comprises the control unit 1' at least one printed circuit board analogous to the first embodiment 20 ' with electronic components 28 ' , a plastic lid 11 ' with molded side walls 12 ' and a plastic floor 30 ' which a housing 10 ' of the control unit 1' form and between which the at least one circuit board 20 ' is arranged. Four locking connections 46 ' of which in 5 Only two are visible, each include one on the housing bottom 30 ' molded latch 32 ' and one on a side wall 12 ' molded latching clip 18 ' and cause a prefixing of the plastic lid 11 ' , the plastic floor 30 ' and the at least one circuit board 20 ' together. For non-positive connection of the at least one circuit board 20 ' with the case back 30 ' and the housing cover 11 ' and for non-positive attachment to the adapter plate 50 two first connection arrangements are provided.

How out 5 further can be seen, the housing has 10 ' approximately in the middle of two side walls 12 ' one mounting flange each 14 ' with a mounting hole 15 ' on, in which a mounting socket 42 ' is anchored. The mounting sockets 42 ' protrude through the circuit board 20 ' trained assembly openings 26 ' , while also in the case back 30 ' corresponding mounting bushes 42 ' in corresponding mounting holes 34 ' are anchored. Vertically over the mounting flanges 14 ' shows the case 10 ' indentations 13 ' which has a tool access to the in the mounting sockets 42 ' allow not used mounting screws used.

How out 5 to 7 it can be seen, is the second embodiment of the circuit board according to the invention 20 ' essentially the same as the first embodiment of the printed circuit board according to the invention 20 executed, so that here is omitted a repetitive description of the same properties. As an essential difference from the first embodiment, the circuit board 20 ' a 180 ° pin strip 22 ' on. The on the circuit board 20 ' arranged pin header 22 ' has a plurality of contact pins 24 ' on, which is not shown in the plug receptacle 16 ' inserted plug can be contacted to the control unit 1' electrically connect with other vehicle systems. For the plug receptacle 16 ' is in the housing cover 11 ' a corresponding recess 17 ' intended. Analogous to the first embodiment, it is possible that on the at least one circuit board 20 ' an accident sensor, such as an acceleration sensor or structure-borne sound sensor of an evaluation circuit such as a microcontroller and a drive circuit for generating the drive signals are provided. The attachment of the components 22 ' . 28 ' can be carried out analogously to the first embodiment by soldering or gluing or press-fitting or by a clamp connection.

For the plug receptacle 16 ' is in the plastic lid 11 ' a corresponding recess 17 ' provided as one in the housing cover 11 ' introduced stage is executed. The opening in the plastic lid 11 ' allows electrical connection to the 180 ° pin header 22 ' in the assembly direction, the plastic lid 11 ' is formed so that the at least one opening and the at least one 180 ° pin header 22 ' are positioned for an electrical connection.

Embodiments of the invention advantageously allow the installation of a simple and cost-effectively manufactured control unit in the vehicle, which can be adapted to the given installation conditions substantially independent of the installation location, wherein the interface concept in the vehicle, d. H. the use of the 90 ° connector strip or the 180 ° pin strip is specified.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 20112595 U1 [0002]

Claims (10)

Printed circuit board for a control device, in particular for personal protective equipment of a vehicle, for receiving electrical components ( 28 . 28 ' ), characterized in that the printed circuit board ( 20 . 20 ' ) is implemented with a combined layout which allows for optional installation of a 90 ° connector ( 22 ) or a 180 ° pin header ( 22 ' ) as part of an interface ( 60 . 60 ' ) for the electrical connection of the printed circuit board ( 20 . 20 ' ) with other components. Printed circuit board according to claim 1, characterized in that the 90 ° plug connector ( 22 ) and / or the 180 ° pin strip ( 22 ' ) by means of through-hole soldering, reflow soldering, through hole reflow soldering or press-fit technology on the printed circuit board ( 20 . 20 ' ) are attached. Printed circuit board according to claim 1 or 2, characterized in that the 90 ° plug connector ( 22 ) a predetermined number of connector pins ( 24 . 25 ) having a 90 ° deflection between the surface of the circuit board ( 20 ) and the 90 ° connector ( 22 ) implement. Printed circuit board according to claim 3, characterized in that the plug pins ( 24 . 25 ) are manufactured as stampings. Printed circuit board according to claim 3 or 4, characterized in that the plug pins ( 24 . 25 ) each two contacting sections ( 24.1 . 24.4 . 25.1 . 25.4 ), a bridging section ( 24.2 . 25.2 ) and a deflection section ( 24.3 . 25.3 ) exhibit. Printed circuit board according to claim 5, characterized in that a first number of connector pins ( 24 ) each have a bridging section ( 24.2 ) having a first length and a second number of connector pins ( 25 ) each have a bridging section ( 25.2 ) having a second length, wherein the bridging portion ( 25.2 ) with the second length shorter than the bridging portion ( 24.2 ) having the first length, wherein the first number of connector pins ( 24 ) and the second number of connector pins ( 25 ) guided by a receiving comb ( 22.1 ) alternately in the 90 ° connector ( 22 ) are arranged. Control device, in particular for personal protective equipment of a vehicle, with at least one printed circuit board ( 20 . 20 ' ) for receiving electrical components ( 28 . 28 ' ), a plastic lid ( 11 . 11 ' ) with molded side walls ( 12 . 12 ' ) and a plastic floor ( 30 . 30 ' ), which a housing ( 10 . 10 ' ) of the control unit ( 1 . 1' ) and between which the at least one printed circuit board ( 20 . 20 ' ), wherein at least one interface ( 60 . 60 ' ) is provided for an electrical connection with at least one further vehicle component, characterized in that the at least one printed circuit board ( 20 . 20 ' ) is executed according to claims 1 to 6. Control device according to claim 7, characterized in that the plastic lid ( 11 ' ) and / or a side wall ( 12 ) at least one opening for making the electrical connection with the printed circuit board ( 20 . 20 ' ), wherein the at least one opening in the plastic cover ( 11 ' ) the electrical connection with the 180 ° pin strip ( 22 ' ) in the assembly direction and / or the at least one opening in the side wall ( 12 ) the electrical connection with the 90 ° connector ( 22 ) parallel to the surface of the circuit board ( 20 ). Control device according to claim 7 or 8, characterized in that the plastic lid ( 11 ' ) when installing the 180 ° pin strip ( 22 ' ) as electrical interface ( 60 ' ) is formed so that the at least one opening and the at least one 180 ° pin strip ( 22 ' ) are positioned for an electrical connection and / or the side wall ( 12 ) when installing the 90 ° connector ( 22 ) as an interface ( 60 ) is formed so that the at least one opening and the at least one 90 ° connector strip ( 22 ) are positioned for electrical connection. Control device according to one of Claims 7 to 9, characterized in that a plurality of connection arrangements ( 40 . 46 . 46 ' ) the plastic lid ( 11 . 11 ' ), the plastic floor ( 30 . 30 ' ) and the at least one printed circuit board ( 20 . 20 ' ), wherein two first connection arrangements ( 40 ) in addition a frictional connection with an adapter plate ( 50 ) and / or a vehicle body allow.

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