WO2019048290A1

WO2019048290A1 - Contact element, plug connection uit and control appliance

Info

Publication number: WO2019048290A1
Application number: PCT/EP2018/073096
Authority: WO
Inventors: Oliver Leibfried; Thomas Schneider; Gerald Friess; Markus Kroeckel; Thomas Kimpel; Ingmar Joas
Original assignee: Robert Bosch Gmbh
Priority date: 2017-09-05
Filing date: 2018-08-28
Publication date: 2019-03-14
Also published as: CN111052513B; CN111052513A; EP3679629A1; DE102017215515A1

Abstract

The invention relates to a contact element (10) for forming an electrical connection between a circuit carrier (2) in a control appliance (100) and a line (4 to 6) in a plug (1000), comprising a first sub-section (11) having a pressing section (14) for pressing into an opening (1) of the circuit carrier (2), at least one pressing shoulder (20) arranged at a distance (L) from the pressing section (14), for applying a pressing force oriented in the direction of a first longitudinal axis (15) of the first sub-section (11), and a second sub-section (12) having a second longitudinal axis (26), for contacting the line (4 to 6), the contact element (10) being embodied as a stamp element.

Description

description

Contact element, plug connection unit and control unit

State of the art

The invention relates to a contact element for forming an electrical connection between a circuit carrier in a control device and a

Line in a plug according to the preamble of claim 1. Furthermore, the invention relates to a Steckeranschlusseinheit with at least two

Contact elements according to the invention as well as a control unit with such a plug connection unit.

A generic contact element is known from DE 10 2014 203 248 A1 of the Applicant. The arranged in a control unit contact element serves as a connection between a circuit carrier and a plug, in particular a harness connector, in the region of

Connector body of the controller is connectable to the controller.

The known contact element has a first section with a

Press-in section, which forms an electrical contact with an opening in the circuit carrier. On the side remote from the first section, the contact element forms a second section which can be connected to a corresponding element of the plug as a counter element.

In practice, a plurality of rows each having a multiplicity of such contact elements are provided in the region of the plug connection body, forming a so-called "male connector." For pressing in the press-in section of the contact element, this has a relatively small distance from the contact element

Einpressabschnitt one or two press-in shoulders, which cooperate with a corresponding tool which has an axial force in

Apply longitudinally of the press-in portion to press the contact element in the opening of the circuit substrate. Due to manufacturing and assembly tolerances, such a pressing-in process is the more critical, the smaller the cross-section of the contact element between the press-in section and the at least one press-in shoulder and the greater the axial distance between the press-fit portion and the at least one Einspressschulter (buckling) is. Furthermore, data lines in the form of Ethernet are known from the prior art.

Lines known in which two juxtaposed

Contact elements are provided to connect the data line, for example, with a control unit. The two contact elements usually have a normalized or standardized distance from

for example, about 1, 8mm.

Disclosure of the invention

The contact element according to the invention for forming an electrical connection between a circuit carrier in a control device and a plug with the features of claim 1 has the advantage that it is a secure mounting or a with a relatively large axial distance between the press-fit and the at least one press-fit safe pressing of the contact element allows. Furthermore, the contact element according to the invention allows in particular for the formation of

Data lines, in which two contact elements cooperate to form a relation to the press-in areas reduced distance serving for contacting the counter-elements of the data line second sections.

According to the invention, it is provided for this purpose that the longitudinal axes of the two sections of a contact element are arranged parallel to each other with lateral offset, that the cross section of the first section (which has the Einspressabschnitt) is greater than the cross section of the second section (with a counter element or a line of the plug cooperates), and that the at least one press-in shoulder forms an end face of the first section on the side facing away from the press-in section, wherein the second section extends from the front side of the first section and proceeds therefrom. Because of that

Einpressabschnitt having portion has a larger cross section than the connector facing the second section, the bending tendency of the first section is reduced or the mechanical rigidity of the

Contact element in the relevant area increased. Furthermore, the lateral offset of the two subsections in conjunction with the reduced cross section of the second subsection enables two contact elements with their two cooperating second subsections to be arranged in such a way that they have a reduced distance compared to the first subsections, which in use as part of a data line Exposure to electromagnetic radiation reduces and thus the

Data transmission security increases.

Advantageous developments of the contact element according to the invention are listed in the subclaims.

To the contact element, which is encapsulated in some areas of the plastic of the connector body, particularly mechanically with the

Connect plug body, it is contemplated that the first portion of the contact element viewed in the longitudinal direction between the press-in and the at least one press-in shoulder has at least one laterally projecting holding portion. Since in the installed state of

Contact element this thus in the axial region between the

Pressing shoulder and the at least one holding portion is surrounded by the plastic of the connector body, the rigidity of the

Contact element in this axial portion additionally increased or increased.

It is very particularly preferred if at least two holding sections are provided, which are arranged at an axial distance with respect to the longitudinal axis of the first section of the contact element spaced from each other. As a result, an undercut is formed between the two holding portions, which can be filled by the plastic of the connector body and thus a positive connection between the

Forms holding portions and the plastic of the connector body.

Moreover, it is in a further preferred embodiment of

Contact element provided that this has a single press-in shoulder, with the exception of the area from which the second section goes out forms the end face of the first section for conditioning of the press tool.

In order to make it possible for such a contact element to be contacted in a direction perpendicular to the circuit carrier direction by a cooperating with the contact element counter element of a plug, it is also provided that the contact element is flat.

The invention also comprises a plug connection unit with one

Plastic existing connector body having at least two contact elements of the invention described so far, the plastic of the connector body surrounding the contact elements partially. The plug connection unit is characterized in that the plastic of the Strecker connection body on the side facing away from the press-in section extends at least approximately flush with the end face of the first section. This makes it possible to arrange a corresponding tool in the region of the press-in shoulder of the contact element during pressing of the contact element into the associated opening in the circuit carrier, which is simultaneously supported on the plastic of the plug connection body. This further makes it possible, with regard to the position accuracy of the

corresponding lower pressing requirements and has the additional advantage that the insertion force can be introduced in addition via the plastic of the connector body in the contact element.

In order to be able to transfer the corresponding press-in forces particularly securely into the contact element via the plastic of the plug connection body, it is furthermore advantageous if the plastic of the

Plug connection body, the at least one holding portion of

Contact element surrounds.

In order to form a data line, in particular an Ethernet line, it is further provided that two longitudinal axes of two adjacent first sections of two contact elements have a first distance from each other, which is greater than a second distance of the two longitudinal axes of the second sections. Moreover, in order to enable robust (data) conduction over the coupling of electromagnetic radiation, it is additionally advantageous if, in addition to the two forming the data line

Contact elements at least one further contact element for forming a ground connection is provided with the plug. This will

on the controller side a ground-side coupling to a plug

arranged shielding housing for the (data) line allows.

Furthermore, it can be provided that, to protect the line from penetrating media or moisture, a plug contact carrier has a chamber for receiving a plug-side sealing element.

Finally, the invention also encompasses a control device having a circuit carrier and a plug connection unit connected to the circuit carrier.

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

This shows in:

1 two juxtaposed contact elements in perspective view, which form a portion of an Ethernet connection in a control unit,

FIG. 2 is a perspective view of a plug contact carrier mounted on a plug connection unit for use with a circuit carrier in a control device; FIG.

Fig. 3 is a perspective longitudinal section through a plug-in system in

simplified representation and

4 is a partial region of the plug-in system of FIG. 3 in an enlarged,

perspective view. The same elements or elements with the same function are provided in the figures with the same reference numerals.

In Fig. 1, two contact elements 10 are shown, as they serve as part of an electrical contacting of a control device 100 with a plug 1000, in particular a plug 1000 of a wiring harness of a motor vehicle. For this purpose, FIG. 3 shows a circuit carrier 2, in particular in the form of a printed circuit board, with openings 1. The circuit carrier 2 is arranged inside a housing (not illustrated) of the control device 100. Furthermore, a plug connection body 60 is shown, which carries the contact elements 10, and which is contactable with the plug 1000.

The contact element 10 is formed as a stamped component made of sheet metal and has two sections 1 1, 12. The first section 11, which is formed as well as the second section 12 is substantially rectilinear or pin-shaped, has an enlarged in cross section Einpressabschnitt 14, the thereto

is formed to cooperate with the corresponding opening 1 of the circuit substrate 2 by the press-in portion 14 in the direction of

Longitudinal axis 15 of the first portion 1 1 is pressed into the opening 1. The circuit carrier 2 has an electronic circuit (not shown), which is electrically contacted to the opening 1, for example via conductor tracks. In FIG. 3, the circuit carrier 2 and the contact elements 10 or the plug connection body 60 are shown in an unfolded state. On the press-in section 14, on the side facing the circuit carrier 2 or the opening 1, there is an insertion section 16 which is pointed or reduced in cross-section, in order to introduce the first section 11 or the contact element 10 into the opening 1 of the circuit carrier 2 facilitate. On the side opposite the insertion section 16, an end face 18 of the first section 11 forms at a distance L from the press-in section 14

Press-in shoulder 20 off. In the region of the press-in shoulder 20, the first section 1 1 has a width B which is greater than a width b between the press-fit shoulder 20 and the press-fit section 14, the cross section of the first section 1 1 being rectangular. In a relation to the first longitudinal axis 15 axial distance to

Einpressschulter 20 are two, perpendicular to the longitudinal axis 15 projecting, in side view in approximately rectangular holding portions 21, 22 on opposite sides. Furthermore, just below the press-in shoulder 20 on one side, a further holding portion 23 is arranged.

The second, likewise rectangular in cross-section portion 12 of the contact element 10 connects in the axial direction of the press-fit shoulder 20, wherein it starts from the height of the press-in shoulder 20 from the first portion 11. Furthermore, the second section 12 is in the direction of the holding section

22 formed extended and forms a further holding portion 24.

Between the holding portions 21, 22 and 23, 24, a distance x is formed.

The second section 12 serves to form an electrical connection with a counter element of the plug 1000, wherein the cross section of the second

Subsection 12 is smaller than the cross section of the first section 1 1 in a central portion 25 between the holding portions 21, 22 and the press-fit 14. Furthermore, it can be seen with reference to FIG. 1 that between the first longitudinal axis 15 of the first section 1 1 and a second longitudinal axis 26 of the second section 12 an offset s is formed.

The two shown in FIG. 1, arranged side by side

Contact element 10, which serve to form a contacting of an Ethernet line or data line 5, have a distance A of approximately 2.54 mm in the region of the two first longitudinal axes 15 of the first sections 11, the distance A also being the distance between the openings 1 in that

Circuit carrier 2 corresponds, and wherein the distance A corresponds to a standardized measure or a grid, as is usually in

Circuit carriers 2 and printed circuit boards is used. In contrast, the two second longitudinal axes 26 in the region of the second sections 12, for example, a distance a of about 1, 8mm, wherein the distance a is selected in dependence on the data line 5, which in this respect also standardized dimensions or grid dimensions in the

Contact elements for the contact element 10 has. For pressing a contact element 10 is not shown

Pressing tool brought into operative connection with the press-in shoulder 20 such that the press-in force in the direction of the first longitudinal axis 15 is transmitted to the contact element 10.

In Fig. 2 is a made of plastic by injection molding

Plug connection unit 50 with a connector body 60 recognizable, which is placed on a plug contact carrier 61, wherein the

Plug connection body 60 surrounds a plurality of contact elements 10 in regions. 2, the press-in sections 14 can be seen, which are connected to the openings 1 in the circuit carrier 2 of the control device 100

interact. In the illustration of Fig. 2, both analog lines 4 of the plug 1000, as well as a data line 5 in the form of an Ethernet line can be seen. The data line 5 are as well as the

Serving lines 6 partially from the plastic of the

Plug contact carrier 61 surrounded, wherein a radially encircling receiving space 62 is formed, in which a plug-side, in Fig. 4 recognizable

Sealing element 7, 8 of the data line 5 and the line 6 can be inserted. According to the illustration of Fig. 4 is in the region of the plug 1000 one of

Shielding the data line 5 serving shielding 66 is provided. Furthermore, it can be seen with reference to FIG. 4 that the plastic of the

Connector body 60 surrounds the region of the contact element 10 up to the level of the press-in shoulder 20, d. h., That the contact element 10 in particular in the area between the holding portions 21 to 23 and the press-fit shoulder 20 is positively surrounded by the material of the connector body 60 or molded around.

The shielding housing 66 in the plug 1000 cooperates by abutting contact with a ground contact designed as a further contact element 68, which in the case of the plug connector 1000 connected to the plug connection body 60 in FIG

Abutting contact with the shielding housing 66 is arranged, wherein the further contact element 68, as well as the contact element 10 as a flat

Contact element 68 formed and partially from the material of the

Plug connector body 60 is molded. The further contact element 68 has a press-in section 70, with which this in a corresponding Opening 1 of the circuit substrate 2 is electrically contacted, said opening 1 is electrically ground potential.

According to the representation of FIG. 4 are in the range of

Connector body 60 and the Steckeranschlusseinheit 50 exemplarily two rows 71, 72 provided with juxtaposed contact elements 10 and other contact elements 68.

The contact element 10 described so far as well as the control unit 100 and the plug 1000 can be modified or modified in many ways, without departing from the spirit of the invention.

Claims

claims

1. contact element (10) for forming an electrical connection between a circuit carrier (2) in a control device (100) and a line (4 to 6) in a plug (1000), with a first portion (11) having a press-in portion ( 14) for pressing into an opening (1) of the

Circuit carrier (2), with at least one at a distance (L) to the press-in portion (14) arranged Einpressschulter (20) for applying a in the direction of a first longitudinal axis (15) of the first portion (1 1) aligned pressing force, and a second , a second longitudinal axis (26) having partial section (12) for contacting the line (4 to 6), wherein the contact element (10) is formed as a punching element, characterized in that the longitudinal axes (15, 26) of the two sections (11, 12) are arranged parallel to one another and with a lateral offset (s) relative to one another such that the cross section of the first subsection (11) between the press-in section (14) and the at least one press-fit shoulder (20) is greater than the cross section of the second subsection (12). , and that at least one

Press-in shoulder (20) forms an end face (18) of the first section (1 1) on the side facing away from the press-in section (14), wherein the second section (12) extends from the end face (18). 2. Contact element according to claim 1,

characterized,

the first partial section (11), viewed in the direction of the first longitudinal axis (15), has at least one laterally projecting holding section (21 to 24) between the press-in section (14) and the at least one press-fit shoulder (20). Contact element according to claim 2,

characterized,

in that at least two holding sections (21 to 24) are provided, which are arranged at a distance (x) from one another in the direction of the first longitudinal axis (15) of the first section (11).

Contact element according to one of claims 1 to 3,

characterized,

in that a single press-in shoulder (20) is provided which forms the end face (18) of the first section (11), with the exception of the area from which the second section (12) originates.

Contact element according to one of claims 1 to 4,

characterized,

that the contact element (10) is planar.

Plug connection unit (50), with a plastic plug connector body (60), which surrounds at least two contact elements (10), which are formed according to one of claims 1 to 5, in regions,

characterized,

that the plastic of the connector body (50) on the

Einpressabschnitt (14) facing away from the side at least approximately flush with the end face (18) of the first section (1 1) extends.

Plug-in connection unit according to claim 6,

characterized,

in that the plastic of the plug connection body (60) at least partially surrounds the at least one holding section (21 to 24).

Plug connection unit according to claim 6 or 7,

characterized,

in that two longitudinal axes (15) of two adjacent first subsections (1 1) have a first distance (A) from each other which is greater than a second distance (a) of the two longitudinal axes (16) of the second subsections

9. plug connection unit according to claim 8,

characterized,

the first and the second distance (A, a) have standardized distances to form connections of data lines (5) and

Press-in connections in circuit carriers (2) are.

10. plug connection unit according to claim 9,

characterized,

that the first distance (A) is about 2.54mm and the second distance (a) is about

1, 8mm.

1 1. plug connection unit according to claim 9 or 10,

characterized,

that shielded against the formation of electromagnetic radiation

Data line (5) is provided at least one further contact element (68) for forming a ground connection.

12. plug connection unit according to claim 6 to 11,

characterized,

in that a plug-in contact carrier (61) has at least one cavity (64) for receiving a sealing element (7, 8) for a data line (5). 13. Control unit (100), with a circuit carrier (2) and one with the

Circuit carrier (2) connected Steckeranschlusseinheit (50), which is designed according to one of claims 6 to 12.

14. Control device according to claim 13,

characterized,

that two adjacent contact elements (10) are part of a data line (5), preferably an Ethernet line, or contact them.