EP3281258A1

EP3281258A1 - Electronic controller

Info

Publication number: EP3281258A1
Application number: EP16712314.0A
Authority: EP
Inventors: Thomas Schrimpf; Stefan REHM; Matthias Ludwig; Michael Hortig; Jan Hansen; Martin Rojahn
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2015-04-10
Filing date: 2016-03-23
Publication date: 2018-02-14
Also published as: US20180123300A1; WO2016162212A1; DE102015206481A1; KR20170134423A; JP2018513533A; CA2981477A1; CN107438925A

Abstract

The invention relates to an electronic controller (10), having a housing (11), which is preferably made of plastic, having at least one high-frequency connection (14, 15), wherein the high-frequency connection (14, 15) has at least two elements (18; 18a; 18b; 18d, 20; 20a; 20b; 20c; 20d) that form a high-frequency conductor (19), for transmitting a high-frequency signal, and a screening element (21), wherein the two elements (18; 18a; 18b; 18d, 20; 20a; 20b; 20c; 20d) of the high-frequency connection (14, 15) are connectable to a circuit carrier (25) in the interior of the housing (11), and wherein the two elements (18; 18a; 18b; 18d, 20; 20a; 20b; 20c; 20d) of the high-frequency connection (14, 15) are formed on the side facing the circuit carrier (25) in the form of press-in pins (28; 28b; 28d, 29; 29b; 29c; 29d, 51).

Description

description

Electronic control unit

State of the art

The invention relates to an electronic control unit. Furthermore, the invention relates to the use of a control device according to the invention.

From DE 198 51 455 A1 of the applicant, an electronic control unit is known which is part of an electric motor operated drive unit in a motor vehicle, for example in the form of a window regulator drive. The known electronic control unit is characterized in that for the electrical contacting of components in the interior of the control unit plug connections are provided, which are surrounded by a connector body. This is done by partially overmolding the

Plug connections through the material of the connector body, thereby forming a so-called Vorumspritzling. The far as with the

Plug connections provided connector body can then either be inserted into a corresponding receptacle of a housing, or be connected directly by molding the connector body of the material of the housing with this.

In aviation or marine civil and military applications, it is known to navigate, i. to determine the location of a vehicle in addition to the satellite-based information in addition internal measuring devices in the form of magnetic field sensors, inertial sensors or the like

use. Such a combination of satellite-based navigation with measuring devices arranged in the vehicle increases or even ensures the accuracy of the position determination in some areas of the world. It is often necessary, the signals of a high-frequency antenna cable or other measuring devices via a water or

Media-tight connection in the interior of an electronic control unit to conduct. For this purpose, the state of the art due to the relatively low Numbers of high-frequency signals used for example with the housing of the controller screwed RF (high-frequency) jacks using sealing rings or similar elements. In addition, the sockets are relatively expensive or similar cable connections. inside the housing electrically contacted with a circuit board. The aim of such a connection between a socket and the circuit carrier is that

Protect high-frequency signal (useful signal) on the one hand against external interference or shield, and on the other hand, an impedance-controlled management of the useful signal in the relevant frequency range. The extent

described supply of the high-frequency signal into the housing interior and within the housing interior is considered to be disadvantageous for high-volume technology, as used in particular in motor vehicles, for manufacturing and cost reasons.

Disclosure of the invention

Based on the above-mentioned prior art, the present invention seeks to further develop an electronic control unit such that optimized with respect to the transmission of the high-frequency signal

Arrangement with simple and inexpensive production is achieved.

In particular, by means of a suitable geometry and material selection for the elements of the high frequency plug connection, the characteristic impedance (impedance) should remain as constant as possible along the transmission path of the radio frequency connection, i. to change as little as possible. At the same time a particularly simple and manufacturing technology favorable connection of

High-frequency connection with a circuit carrier, in particular in the form of a printed circuit board, can be achieved. This object is achieved according to the invention in an electronic control unit having the features of claim 1 essentially in that the high-frequency connection has at least two elements, one

High-frequency conductor for transmitting a high-frequency signal and a

Shielding element, wherein the two elements of the high-frequency connection in the interior of the housing with a circuit carrier (printed circuit board) connectable are, and wherein the two elements of the high-frequency connection are formed on the circuit carrier side facing in the form of Einpresspins.

In particular, by the latter feature ensures that a particularly simple electrical and mechanical contact of the

High-frequency connection is made possible with the circuit board, which favors a large-scale technical implementation.

Advantageous developments of the electronic control unit are listed in the subclaims. All combinations of at least two of the features disclosed in the claims, the description and / or the figures fall within the scope of the invention.

In particular, the high-frequency connection is used to connect an antenna cable to the electronic control unit, wherein the signal with minimal reflection losses to one on the circuit carrier (printed circuit board)

arranged receiver chip to be forwarded. For this purpose, it is necessary to optimize the transmission for transmission of ultra-high frequency signals, in which the reflection is minimized.

In a first inventively provided arrangement of Einpresspins the Einpresspins are bent by an angle of 90 ° from its original direction. Such an arrangement allows a particularly simple installation of Einpresspins with the circuit carrier. However, it is within the scope of the invention also possible, depending on the application, in particular depending on the position or position of sensors on the circuit board, the Einpastepins at other angles from their original direction, in particular with multiple angles of 45 °, bend.

An optimized with regard to the transmission properties training of the two elements of the high-frequency connection can be achieved if the two elements are each formed in one piece and form a socket on the outside of the housing. The one-piece nature of the two elements allows, in particular over the length of the transmission line optimized cross-sections and a particularly good shielding of the

RF conductor. In addition, by training as a socket the Use of conventional, having a plug

Antenna connecting cables possible.

However, it is also possible that the two elements on the

Housing outside side facing within the housing are connected to a separate element from the two elements, which is preferably designed as a socket.

Production technology particularly simple and inexpensive, the two elements of the high-frequency connection can be formed as stamped / bent parts.

In addition, an embodiment in which the high-frequency connection is partially formed by the material of the housing formed as an injection molded part or by a connecting body which has a housing is particularly preferred

Vorumspritzling trains, is molded. Such a design makes it possible in particular without the use of additional sealing elements and minimal installation costs, the high-frequency connection water or

Media-tight form the housing.

A particularly simple geometry of the two elements of the

High-frequency connection can be achieved if the two elements are arranged parallel to each other in the region of the press-fit pins.

In development of the latter thought, in which the

Shielding element has improved shielding properties, it is provided that the shielding element has two Einpresspins, between which a press-in pin of the high-frequency conductor is arranged.

To improve the shielding properties of the shielding element, it is also advantageous if the shielding element widened at least one opposite the press-in nip of the high-frequency conductor

Shielding region, which covers the high-frequency conductor at least partially in relation to a direction perpendicular to the shielding arranged direction. A further improved shielding effect can be achieved if a plurality of shielding regions are provided which form a preferably at least approximately closed receiving space for the high-frequency conductor.

For this purpose, it may be provided, in particular, that the shielding regions are arranged at right angles to one another and are connected in one piece with one another via curved sections having a radius of curvature.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings.

This shows in:

Fig. 1 shows an inventive electronic control unit in a

perspective outside view,

Fig. 2 is a schematic representation of a first embodiment of

Invention using each one-piece element for forming the high-frequency conductor and the shielding element of a high-frequency plug connection,

Fig. 3 is a representation corresponding to FIG. 2 at a second

inventive design of the high-frequency plug connection using an additional, separate element for

Forming a socket,

Fig. 4 is a perspective view of a high-frequency plug connection according to FIG. 3 in the region of a housing wall of the control unit and

Fig. 5

to

Fig. 7 respectively in perspective views differently shaped high-frequency conductor and shielding to form a high-frequency connector in the interior of the housing of the electronic control unit. The same elements or elements with the same function are provided in the figures with the same reference numerals. In Fig. 1 is an electronic control unit 10 as part of a

Driver assistance system, in particular a navigation system, shown in a vehicle. The controller 10 is adapted to the position of the vehicle or the controller 10 using satellite-based

Information and additionally using a sensor, for example, for the detection of magnetic fields or accelerations or delays, or

Press, calculate.

The preferably made of plastic and injection molded housing 1 1 of the controller 10 has the electrical

Contacting by way of example two juxtaposed nano-MQS

Plug-in connections 12, 13 and two, also juxtaposed high-frequency connections 14, 15 which are formed on the outside of the housing 1 1 each in the form of a socket. Of course, the plug-in connections 12, 13 and the high-frequency connections 14, 15 may also have other positions on the housing 11. The two high-frequency connections 14,

15 make it possible to electrically connect a high-frequency antenna cable (not shown), which has a plug on the side facing the housing side, to the housing 11 or the control unit 10. It can be provided, the plug-in connections 12, 13 and the

High-frequency connections 14, 15 to be arranged within a made of plastic, and injection molded connection body 16 which is inserted into an injection mold for producing the housing 1 1, such that the material of the housing 1 1 surrounds the material of the connection body 16 in regions by the Material of the housing 1 1 to the

Terminal body 16 is molded. As a result, a media- or waterproof arrangement and design of the plug-in connections 12, 13 and the

High frequency terminals 14, 15 formed on the housing 1 1. Furthermore, it can be seen on the housing 1 1 at its top a recess 17, in the area, for example, an unrecognizable membrane of a

Pressure sensor is arranged. FIGS. 2 and 3 show different arrangements or embodiments according to the invention using the example of one of the two high-frequency connections 14, 15, in the exemplary embodiment shown at the high-frequency connection 14. In FIG. 2 it can be seen that a high-frequency connection 14 basically consists of a first element 18, which forms a high-frequency conductor 19. The first element 18 or the high-frequency conductor 19 is at least partially surrounded by a second element 20, which forms a shield 21. This is most clearly seen in the Fig. 1, where at the

Outside of the housing 1 1 the shield 21 the (pin-shaped)

High-frequency conductor 19 surrounds annular.

It can also be seen with reference to FIG. 2 that the two elements 18, 20 penetrate a housing wall 22, which is a component of the housing 1 1 or the connection body 16, or of the material of the housing 1 1 or of the

Terminal body 16 are encapsulated. Furthermore, a circuit carrier in the form of a printed circuit board 25, which has openings 26, 27 in the form of bores, which are formed, the printed circuit board 25 with the two elements 18, 20 of the high-frequency connection 14, 15th to contact electrically and mechanically.

For this purpose, it is provided that the high-frequency conductor 19 by way of example a press-in pin 28 and the shield 21 two Einpresspins 29, 30 which are bent by an angle α of 90 ° from its original direction and perpendicular to the plane of the circuit board 25.

By the arrow 31, the press-in direction of the circuit board 25 is designated relative to the Einpresspins 28 to 30. In addition, it is mentioned that it is also within the scope of the invention, the Einpresspins 29, 30 with respect to the elements 18, 20, rectilinear form, i. with an angle α of 180 °. Essential in the embodiment of the two elements 18, 20 shown in FIG. 2 is that they are each formed in one piece.

FIG. 3 shows a modified embodiment of the invention with respect to FIG. 2, in which the two elements 18a, 20a, in contrast to the embodiment of FIG. 2, are completely within the interior of the housing

1 1 are arranged. There are the elements 18a, 20a with a preferably standardized element 32 which penetrates the housing wall 22 and is formed, for example, as a known from the prior art high-frequency socket.

Based on the embodiment of FIG. 3, FIG. 4 shows that the element 32 is connected to the two elements 18b, 20b in the region of the interior of the housing 11. The two elements 18b, 20b are formed in particular as stamped / bent parts made of sheet metal. The element 18b has an annular portion 33, on which on one side a rectilinearly integrally formed transition section 34 is formed, which runs parallel to a bushing longitudinal axis 35. At right angles to the transition section 34, the press-in pin 28b closes. The element 20b also has an annular portion 36, which merges via a transition portion 37, which is also arranged parallel to the bushing longitudinal axis 35, in a Einpresspin 29b. The two press-in pins 28b, 29b or the two

Transition sections 34 and 37 are arranged parallel to each other.

In FIG. 5, the element 18b is combined with a second element 20c forming the shield 21, which is modified from the second element 20b according to FIG. 4 in that the second element 20c has two rectangular shielding regions 38, 39 which are integral are connected to each other via a curvature portion 41 having a radius of curvature r, wherein the two shielding portions 38, 39 are arranged at right angles to each other. While one shielding portion 38 is connected to the annular portion 33c, one goes away from the other

Shielding area 39 at the lower edge of the press-in pin 29c. Furthermore, it can be seen that the transition section 34 of the first element 18b is arranged in a direction perpendicular to the plane of the first shielding area 38 arranged in alignment with the shielding region 38 and is covered by this. The shielding properties of element 20c are improved over element 20b of FIG.

FIG. 6 shows an embodiment with shielding properties that have been improved even further compared to FIG. 5, in which the first element 18d has a transition section 34d arranged perpendicular to the press-in pin 28d, which has a curved section 41 provided with a radius r merges into the press-in pin 28d. The second element 20d has a total of three, in each case approximately rectangular shielding regions 42 to 44. The two shielding regions 42 and 43, which each have a press-in pin 29d, 30d, are arranged parallel to one another, such that the first element 18d is arranged between the two shielding regions 42, 43 or received by the latter.

The shielding portion 44, which has a curved portion 45 with

Radius of curvature r is integrally connected to the shielding 43, extends to form a preferably minimal gap 46 to the

Shielding area 43 zoom.

Finally, FIG. 7 shows a variant modified with respect to FIG. 6 with further improved shielding properties, in which FIG

Shielding region 42e has an additional shielding region 47, which is integrally formed on the shielding region 42e and via a

Curvature portion 48 is disposed perpendicular to the shielding region 42e such that the shielding region 47 covers the first element 18d, wherein through the shielding regions 42e, 43, 44 and 47 a receiving region 49 is formed, in which the first element 18d is arranged. In addition, the first element 18d has a further press-in pin 51. Also, the shielding 47 may have an additional, not shown Einpresspin. In the event that a plurality of shielding regions 42, 42e, 43, 44 and 47 are integrally connected to one another via radii of curvature r or curved sections 41, it is advantageous to form the radii of curvature r or the curved sections 41 in such a way that the shielding regions 42, 42e , 43, 44 and 47 form an approximately circular shield around the inner conductor or the first element 18b, 18d, so that the shield 21 and the first element 18b, 18d have the desired impedance.

The electronic control unit 10 described so far can be modified or modified in many ways, without departing from the spirit of the invention.

Claims

claims

Electronic control unit (10) with a preferably plastic housing (1 1), with at least one high-frequency connection (14, 15), wherein the high-frequency connection (14, 15) at least two elements (18; 18a; 18b; 18d, 20; 20a, 20b, 20c, 20d) forming a high-frequency conductor (19) for transmitting a high-frequency signal and a shielding element (21), the two elements (18; 18a; 18b; 18d, 20; 20a; 20b; 20c; 20d ) of the high frequency terminal (14, 15) in the interior of the housing (1 1) with a circuit carrier (25) are connectable, and wherein the two elements (18; 18a; 18b; 18d, 20; 20a; 20b; 20c; 20d) of High-frequency connection (14, 15) on the circuit carrier (25) facing side in the form of Einpresspins (28; 28b; 28d, 29; 29b, 29c, 29d, 51) are formed.

Control device according to claim 1,

characterized,

in that the press-fit pins (28; 28b; 28d, 29; 29b; 29c; 29d, 51) are bent over their angle of origin by an angle (a) of 90 °.

Control device according to claim 1 or 2,

characterized,

in that the press-fit pins (28; 28b; 28d, 29; 29b; 29c; 29d, 51) in the

Contacting area with the circuit carrier (25) are arranged perpendicular to the plane of the circuit carrier (25).

Control device according to one of claims 1 to 3,

characterized,

that the two elements (18, 20) are each formed in one piece and on the outside of the housing (1 1) form a socket.

5. Control device according to one of claims 1 to 3,

characterized, that the two elements (18a; 18b; 18d, 20a; 20b; 20c; 20d) on the side facing the housing outside within the housing (1 1) with one of the two elements (18a; 18b; 18d, 20a; 20b; 20c ; 20d) separate element (32) are connectable, which is preferably designed as a socket.

Control device according to one of claims 1 to 5,

characterized,

the two elements (18; 18a; 18b; 18d, 20; 20a; 20b; 20c; 20d) of the high-frequency connection (14, 15) are formed as stamped / bent parts.

Control device according to one of claims 1 to 6,

characterized,

that the high-frequency connection (14, 15) partially of the material of the formed as an injection molded part housing (1 1) or a

Terminal body (16) is encapsulated.

Control device according to one of claims 1 to 7,

characterized,

in that the two elements (18, 18a, 18b, 18d, 20, 20a, 20b, 20c, 20d) of the high-frequency connection (14, 15) are in the region of the press-fit pins (28, 28b, 28d, 29, 29b, 29c, 29d, 51 ) are arranged parallel to each other.

Control device according to claim 8,

characterized,

the shielding element (21) has two press-fit pins (29d, 30d) between which a press-in pin (28d) of the radio-frequency conductor (19) is arranged. 10. Control device according to claim 8 or 9,

characterized,

the shielding element (21) has at least one opposite the

Einpresspinn (28d) of the high-frequency conductor (19) widened

Shielding region (38, 39, 42; 42e, 43, 44, 47) arranged with respect to a perpendicular to the shielding region (38, 39, 42; 42e, 43, 44, 47)

Direction of the high-frequency conductor (19) at least partially covered.

1 1. Control device according to claim 10,

characterized,

in that a plurality of shielding regions (42e, 43, 44, 47) are provided which form a preferably at least approximately closed receiving space (49) for the high-frequency conductor (19).

12. Control device according to claim 1 1,

characterized,

in that the shielding regions (38, 39, 42; 42e, 43, 44, 47) are arranged at right angles to one another and are connected in part integrally with one another via curvature sections (41, 48) having a radius of curvature (r).