EP3782235A1

EP3782235A1 - Direct plug connector

Info

Publication number: EP3782235A1
Application number: EP20736975.2A
Authority: EP
Inventors: Stefan Schilpp; Micha Brodbeck
Original assignee: Wuerth Elektronik Eisos GmbH and Co KG
Current assignee: Wuerth Elektronik Eisos GmbH and Co KG
Priority date: 2019-07-10
Filing date: 2020-07-02
Publication date: 2021-02-24
Also published as: TW202114305A; DE102019210235B4; WO2021004893A1; US11594831B2; CN112640221A; JP2021532553A; CN112640221B; CA3107090A1; CA3107090C; TWI738415B; DE102019210235A1; US20220140511A1; JP7111884B2

Abstract

The invention relates to a direct plug connector (1) for producing an electrical connection between a conductor (30) and a metallised through opening (40) of a circuit board (50). The direct plug connector (1) has a fastening element (4) and a contact (2) having at least one first contact arm (3a). The first contact arm (3a) is designed to electrically contact the conductor (30) to the metallised through opening (40). The fastening element (4) can take up a fastening position and a release position, the fastening element (4) being designed, in the fastening position, to fasten the direct plug connector (1) to the metallised through opening (40).

Description

Direct connector

The invention relates to a direct plug connector for establishing an electrical connection between a conductor and a metallized through opening of a circuit board, with a contact with at least one first contact arm, wherein the first contact arm is designed for the electrical connection of the conductor with the metallized through opening and with a fastening element, which can assume a fastening position and a release position.

DE 10 2013 214 232 A1 discloses a plug-in device with two plug-in elements lying opposite one another and a clamping pin which can be moved relative to the plug-in elements.

DE 10 2016 111 926 A1 discloses a plug contact with a cantilever arm.

DE 10 2015 119 484 A1 discloses a plug contact bent in an L-shape.

SKEDD contacts are known (SKEDD is a trademark, EU010723948), which enable a vibration-proof connection and reversible insertion into a metallized drill hole in a circuit board. A SKEDD contact is produced by punching and then bending, the SKEDD contact being made from one piece of material and having two different material thicknesses.

The object of the invention is to provide a direct plug connector which has a compact design, is inexpensive to manufacture and increases the stability of a mechanical and electrical connection.

The invention solves the problem by providing a direct plug connector with the features of claim 1. Advantageous developments of the invention are described in the subclaims.

The direct plug connector according to the invention for the production of an electrical connection between a conductor and a metallized through opening of a circuit board has a fastening element and a contact with at least one first contact arm. The first contact arm is designed for the electrical connection of the conductor to the metallized through opening. The fastening element can have a fastening position and assume a release position, the fastening element being designed in the fastening position for fastening the direct plug connector to the metallized through-opening.

By using the metallized through opening both for fastening the direct connector and for establishing the electrical connection, a compact design of the direct connector is achieved. The compact design allows the material costs of the direct connector to be kept low, so that the direct connector is inexpensive to manufacture. In addition, if unwanted forces act on a direct connector, no or only minimal leverage moments occur due to the arrangement of the contact and the fastening element, as a result of which an electrical connection of the direct connector is more stable.

The conductor can be a cable strand of a cable or a wire.

The contact can have a connection section. The connection section can be designed to establish a detachable electrical connection or a permanent electrical connection with the conductor, in particular the electrical connection between the connection section and the conductor can be a soldered connection, a press connection, a crimp connection, an IDC connection, a clamp connection, a Be a tongue connection, a connection by crimping or a welded connection.

The first contact arm can be designed to produce a detachable electrical connection with the metallized through opening. In particular, the releasable electrical connection can be a plug connection. The first contact arm can be designed to be pushed or plugged into the metallized through opening, in particular several times, and, in particular, to be pulled out of the metallized through opening several times. In particular, the first contact arm can be designed to be resilient, so that a secure electrical connection is established after it has been inserted into the metallized through opening. In other words, the first contact arm can be elastically deformed during the insertion into the metallized through opening, whereby the first contact arm is pretensioned. The bias can press the first contact arm against the metallized through opening. The first contact arm and / or the contact can have a chamfer or a rounding on its edges, in particular on its outer edges. The contact is made of electrically conductive material or at least coated to be electrically conductive. The fastening element can be designed to grip the metallized through-opening in the fastening position or to engage in the metallized through-opening and is designed, for example, to be pushed or inserted into the metallized through-opening in the release position or to be pulled or removed from the metallized through-opening . The fastening element can be a flexible element, in particular the fastening element can be transferred from the fastening position to the release position by exerting a force on the fastening element, for example by bending or bending the fastening element. In the release position, the fastening element can be prestressed, the prestressing causing the fastening element to be automatically transferred from the release position to the fastening position, for example by springing back the fastening element into the fastening position. The fastening element is a separate element from the contact. The fastening element can for example be part of the housing. The fastening element is made of electrically insulating material or is at least coated with an electrically insulating material.

When the fastening element has been inserted into the metallized through-opening, the fastening element in the fastening position can produce a form-fitting connection and / or a force-fitting connection with the metallized through-opening.

In a further development of the invention, the direct connector has a locking pin which, in a locked state, prevents the fastening element from being transferred from the fastening position to the release position by means of a positive fit with the fastening element and, in an unlocked state, enables the fastening element to be transferred from the fastening position to the release position. Advantageously, the locking pin achieves a more stable mechanical fastening of the direct plug connector to the metallized through opening; in particular, the locking pin prevents the direct plug connector from being unintentionally detached from the metallized through opening. For example, the locking pin can be transferred several times between the unlocked state and the locked state. In the locked state, the locking pin can be inserted into the fastening element or received by the fastening element. The locking pin can also be designed not only to block the fastening element in the fastening position but also to press it against the metallized through opening.

In a further development of the invention, the contact defines an intermediate space for receiving the locking pin at least in sections, the first contact arm being the Intermediate space at least partially limited, and wherein the locking pin is arranged at least in the fastening position within the intermediate space. This arrangement of locking pin and contact advantageously achieves a compact design.

In a further development of the invention, the contact has a second contact arm which is arranged opposite the first contact arm, the first contact arm and the second contact arm at least partially delimiting the space. The use of a second contact arm increases the stability of an electrical connection of a direct connector. The second contact arm can have the same properties or the same design as the first contact arm.

In a further development of the invention, the locking pin has at least one first groove, within which the first contact arm is arranged at least in sections in the locked state of the locking pin. For example, the first contact arm is partially arranged within the first groove. In the release position, the first contact arm can also be arranged in sections within the first groove.

In a further development of the invention, the locking pin has a second groove within which the second contact arm is arranged at least in sections when the locking pin is in the locked state, the second groove being arranged opposite the first groove. For example, the second contact arm is partially arranged within the second groove. In the release position, the second contact arm can also be arranged in sections within the second groove.

In a further development of the invention, the locking pin and / or the first contact arm has at least one run-on bevel, which is each designed so that in the locked state the locking pin presses or biases the first contact arm against the metallized through opening. For example, the run-on bevel can be designed so that the locking pin applies a force to the first contact arm in the direction of the metallized through opening. The locking pin and / or the second contact arm can have a further run-on bevel, which is each designed so that, in the locked state, the locking pin biases the second contact arm against the metallized through opening.

In a further development of the invention, the fastening element has at least one first latching arm with a first latching nose. For fastening the direct plug connector to the metallized through opening, the first latching lug preferably engages on the metallized through-opening or at one end of the through-opening, at which the through-opening merges into an underside of the circuit board. The first latching arm can be designed to be pushed or plugged into the metallized through opening, in particular several times, and, in particular, to be pulled out of the metallized through opening several times. For example, the first latching arm can be elastically deformed, the first latching arm not being deformed in the fastening position and being deformed in the release position. For example, the first locking lug has a first bevel and / or a second bevel. The first bevel can be designed so that the fastening element is transferred from the fastening position to the release position, in particular to deform and deflect the first latching arm when the fastening element is inserted into the metallized through opening and / or the second bevel can be designed so that the fastening element is transferred from the fastening position into the release position, in particular to deform and deflect the first latching arm when the fastening element is pulled out of the metallized through opening. The second bevel can have a greater slope than the first bevel, so that a greater force is required for pulling the fastening element out of the metallized through opening than for pushing the fastening element into the metallized through opening.

In a further development of the invention, in the locked state, the locking pin rests against a rear side of the first latching arm that faces away from the first latching lug. For example, in the locked state there is a form fit between the locking pin and the first latching arm, which prevents the first latching arm from being transferred, in particular from being deformed, from the fastening position to the release position. The back of the first latching arm and / or the locking pin can be provided with a bevel. In the locked state, the locking pin can bias or press the first latching arm against the metallized through opening.

In a further development of the invention, the fastening element has a second latching arm with a second latching lug, the second latching arm being arranged opposite the first latching arm. The use of a second latching arm increases the stability of the attachment of the direct plug connector to the metallized through opening. The second latching arm can have the same properties or configurations as the first latching arm. The back of the second latching arm and / or the locking pin can be provided with a bevel. In the locked state, the locking pin can bias or press the second latching arm against the metallized through opening. In a further development of the invention, the locking pin is designed to be pushed between the first locking arm and the second locking arm.

In a further development of the invention, the first latch arm and the second latch arm lie in a latch arm plane, the first contact arm and the second contact arm lie in a contact arm plane, and the latch arm plane and the contact arm plane are perpendicular to one another.

In a further development of the invention, the direct plug connector has a housing, the housing having the fastening element. For example, the fastening element can be arranged on an underside of the housing. The fastening element and the housing are preferably designed in one piece. For example, the fastening element and / or the housing can be made of plastic. Within the housing, the contact can be arranged in a touch-safe manner and electrically insulated from the environment.

In a further development of the invention, the housing has a first housing part and a second housing part, the first housing part having the fastening element and the second housing part having the locking pin, the first housing part and the second housing part being displaceable relative to one another, wherein in a first relative position the locking pin assumes the unlocked state of the first housing part and the second housing part and the locking pin assumes the locked state in a second relative position of the first housing part and the second housing part. The locking pin is preferably designed in one piece with the second housing part. A direction of displacement of the first housing part relative to the second housing part can be parallel to a longitudinal axis of the metallized through opening and / or parallel to a direction of insertion of the direct plug connector into the metallized through opening.

In a further development of the invention, the contact has a securing section which is arranged inside the housing and secures the contact against falling out of the housing. When the direct connector has established an electrical connection between the conductor and the metallized through opening, the fastening element is in the fastening position and tensile forces act on the conductor, the securing section can fall out, in particular pull out, of the contact from the housing as a result of the tensile forces on the Prevent conductors, thereby preventing the electrical connection from being disconnected. In a further development of the invention, the direct plug connector has a centering element which can interact with a corresponding centering element on the circuit board and which secures the direct plug connector against twisting. The centering element can be a centering opening or a centering pin. The corresponding centering element of the circuit board can be a centering pin or a centering opening. As a rule, a centering opening will be provided on the circuit board. For example, the centering element can be arranged on an underside of the housing, in particular on an underside of the first housing part. For example, the centering element and the housing can be designed in one piece. For example, the centering element and the corresponding centering element of the circuit board can act as a positioning aid when the direct connector is attached to the circuit board and especially to the metallized through opening.

Further features and advantages of the invention emerge from the claims and the following description of preferred embodiments of the invention in conjunction with the drawings. Individual features of the different illustrated embodiments can be combined with one another in any way without going beyond the scope of the invention. In the drawings show:

Fig. 1 is a view of a direct connector according to the invention obliquely from below,

FIG. 2 shows a view of the direct plug connector of FIG. 1 from below,

Fig. 3 is a sectional view of the direct connector of Fig. 1 on a sectional plane III-

III, wherein the direct connector is attached to a metallized through opening of a circuit board,

FIG. 4 shows a sectional view of the direct plug connector of FIG. 1 on a sectional plane IV-

IV, with the direct connector attached to the metallized through opening,

Fig. 5 is a view of the direct connector of FIG. 1 obliquely from below, wherein the

Direct connector is attached to the metallized through opening of the circuit board,

6 shows a view of the direct connector of FIG. 1 obliquely from above, the

Direct connector is attached to the metallized through opening of the circuit board, 7 shows an exploded view or an exploded view of the direct plug connector of FIG. 1 with a printed circuit board,

8 shows a view of a contact of the direct plug connector of FIG. 1 obliquely from the front, FIG. 9 shows a view of the contact of FIG. 8 obliquely from behind,

10 shows a view of a first housing part of the direct plug connector of FIG. 1 obliquely from below,

11 is a view of the first housing part of FIG. 10 obliquely from above, FIG. 12 is a first sectional view of the first housing part of FIG. 10, FIG. 13 is a second sectional view of the first housing part of FIG. 10,

14 shows a view of a second housing part of the direct plug connector of FIG. 1 obliquely from below,

15 shows a view of the second housing part of FIG. 14 obliquely from the side, FIG. 16 shows a first sectional view of the second housing part of FIG. 14, FIG. 17 shows a second sectional view of the second housing part of FIG. 14,

FIG. 18 shows the second housing part cut according to FIG. 16 obliquely from above, FIG. 19 shows the second housing part cut according to FIG. 17 obliquely from the side, FIG. 20 shows a view of the second housing part of FIG. 14 obliquely from the side,

21 shows a view of the direct plug connector of FIG. 1 on a sectional plane XXI-XXI, and 22 shows a sectional view of a further embodiment of a direct plug connector according to the invention obliquely from above, which is fastened to a metallized through opening of a printed circuit board.

1 shows, in a view obliquely from below, a direct plug connector 1 with a housing 17 which has a first housing part 18 and a second housing part 19. In sections, a contact 2 protrudes from the first housing part 18 on an underside of the direct plug connector 1. A first contact arm 3a and a second contact arm 3b of the contact 2 protrude in sections from the first housing part 18. The first contact arm 3a is arranged opposite to the second contact arm 3b. The first contact arm 3a and the second contact arm 3b are provided to electrically connect the contact 2 to a metallized through-opening of a printed circuit board. The two contact arms 3a, 3b lie in a common contact arm plane.

The housing 17 has a fastening element 4 on its underside, from which the first contact arm 3a and the second contact arm 3b protrude and which in FIG. 1 faces the viewer. The fastening element 4 is provided to fasten the direct connector 1 to the metallized through opening. For this purpose, the fastening element 4 can assume a fastening position or a release position. When it is in the fastening position and is inserted into the metallized through opening, the fastening element 4 holds the direct plug connector 1 on the metallized through opening or on the circuit board. In the release position it is possible to push the fastening element 4 into the metallized through-opening or to pull it out of the metallized through-opening. In Fig. 1 the fastening position is shown.

The fastening element 4 shown in FIG. 1 has a first latching arm 9a and a second latching arm 9b. The first latching arm 9a has a first latching lug 10a and the second latching arm 9b has a second latching lug 10b. The first locking arm 9a is arranged opposite to the second locking arm 9b. The two latching arms 9a, 9b with their latching lugs 10a, 10b are designed to latch into the metallized through opening. The two locking arms 9a, 9b are arranged in a locking arm plane.

1 shows that the two contact arms 3a, 3b and the two latching arms 9a, 9b are intended to use the same metallized through opening on the one hand for establishing an electrical connection and on the other hand for fastening the direct connector 1. 1 also shows that a locking pin 5 is arranged between the two contact arms 3a, 3b and the two latching arms 9a, 9b. The locking pin 5 is intended to block the fastening element 4 so that the fastening element 4 and especially the latching arms 9a, 9b are not inadvertently transferred from the fastening position to the release position.

Fig. 2 shows the direct connector 1 from below. The two latching arms 9a, 9b lie in a latching arm plane 14 and the contact arms 3a, 3b lie in a contact arm plane 16, the latching arms 9a, 9b and the contact arms 3a, 3b being arranged such that the latching arm plane 14 and the contact arm plane 16 are perpendicular to one another .

FIG. 3 shows a sectional view of the direct plug connector 1, the section plane III-III being the contact arm plane 16 from FIG. The direct plug connector 1 is inserted into a metallized through opening 40 of a printed circuit board 50. The two contact arms 3a, 3b rest against a wall of the metallized through opening 40 and thereby establish the electrical connection to it.

FIG. 4 shows a sectional view of the direct plug connector 1, the sectional plane IV-IV being the locking arm plane 14 from FIG. 2. The two latching lugs 10a, 10b are arranged outside the metallized through opening 40 and lie on an underside of the printed circuit board 50. The two latching lugs 10a, 10b therefore engage behind the metallized through opening 40 and thus prevent the direct plug connector 1 from being unintentionally pulled off the printed circuit board 50.

4 further shows that the locking pin 5 is formed in one piece with the second housing part 19 and that the fastening element 4 is formed in one piece with the first housing part 18.

4 shows a locked state of the locking pin 5. The locking pin 5 is pushed between the first latching arm 9a and the second latching arm 9b and rests against both a rear side 11 of the first latching arm 9a and a rear side 12 of the second latching arm 9b. As a result, a form fit between the locking pin 5 and the two latching arms 9a, 9b is achieved in a direction parallel to the printed circuit board 50. This form-fit causes the fastening element 4 and the latching arms 9a, 9b to be blocked in the fastening position and prevents the latching arms 9a, 9b from being inadvertently transferred into the release position and, as a result, the direct connector 1 unintentionally disengaging from the circuit board 50 and from the metallized Through opening 40 releases. In order to detach the direct plug connector 1 from the metallized through opening 40 and thus from the circuit board 50, the locking pin 5 must be transferred into an unlocked state, not shown. In the illustration in FIG. 4, the locking pin 5 together with the second housing component 19 must be moved upwards, away from the circuit board 50, relative to the latching arms 9a, 9b and the second housing part 18. In the unlocked state, the locking pin 5 is then at least no longer arranged between the two locking lugs 10a, 10b and it is possible to transfer the locking arms 9a, 9b from the fastening position to the release position. If the latching arms 9a, 9b are moved into the release position, i.e. deflected inward in FIG. 4, the latching lugs 10a, 10b can move into the through opening 40 and the direct connector 1 can be pulled out of the metallized through opening 40. In order to transfer the locking pin 5 into the unlocked state, a user pulls on the second housing part 19 in a direction 8 which points away from the circuit board. As a result, the second housing part 19 shifts relative to the first housing part 18 until both housing parts 18, 19 assume a first relative position. In the first relative position, the locking pin 5 is in the unlocked state and the direct plug connector 1 can be pulled out of the metallized through opening 40. In order to fasten the direct connector 1 to the metallized through-opening 40 again, the two latching arms 9a, 9b together with the two contact arms 3a, 3b are pushed into the metallized through-opening 40 until the two latching lugs 10a, 10b snap into place behind the metallized through-opening 40, as is shown in FIG. A user then presses the second housing part 19 against the direction 8, whereby the second housing part 19 is displaced relative to the first housing part 18 and assumes a second relative position, which is shown in FIG. 4. In the second relative position, the locking pin 5 is in the locked state, see FIG. 4.

5 shows the direct plug connector 1 from below, the direct plug connector 1 being connected to the printed circuit board 50. The two contact arms 3a, 3b rest on the wall of the metallized through opening 40 and thereby establish an electrical connection. The two locking lugs 10a, 10b hold the direct plug connector 1 on the circuit board 50 via the same metallized through opening 40. The locking pin 5 is in the locked state and blocks the locking lugs 10a, 10b.

Fig. 6 shows the direct connector 1 in a view obliquely from above. The direct plug connector 1 is fastened to the circuit board 50 and establishes an electrical connection between a conductor 30, which is connected to the contact 2, and the metallized through opening 40 of the circuit board 50. 7 shows the direct plug connector 1 in an exploded view or an exploded view.

8 and 9 each show a view of the contact 2 obliquely from the front and obliquely from the rear. The contact 2 has a connection section 13. The connection section 13 is designed to establish an electrical connection with the conductor 30 and to fasten the conductor 30 to the contact 2. For this purpose, the conductor 30 is placed in the connection section 13 of the contact 2 and by squeezing the connection section 13, a crimped connection or press-in connection is established between the contact 2 and the conductor 30. The connection section can be designed in any way within the scope of the invention, for example also as an insulation displacement contact or as a soldering lug.

The contact 2 also has a securing section 20, one end 27 of the securing section 20 facing the connection section 13 being bent off with respect to the contact arm plane 16 in which the contact arms 3a, 3b and the remaining securing section 20 are located. The securing section 20 is arranged in the assembled state of the direct connector 1 within the housing 17, see also FIG. 3, and secures the contact 2 against falling out of the housing 17. If a conductor 30 is connected to the contact 2 with the connection section 13 and it If the conductor 30 is pulled, the bent ends 27 of the securing section 20 abut against a bead 28 of the second housing part 19, which prevents the contact 2 from being pulled out of the housing 17. In other words, a form fit between the bead 28 and the end 27 prevents the contact 2 from falling out of the housing 17.

The contact 2 is formed in one piece from one piece of sheet metal material. The sheet metal material is first punched out or lasered out, in order then to form the connection section 13 and the end 27 of the securing section 20 by bending.

8 and 9 also show that the contact 2 defines an intermediate space 6, the first contact arm 3a and the second contact arm 3b at least partially delimiting the intermediate space 6. In the fastening position of the locking pin 5, the locking pin 5 is arranged within the space 6, see also FIG. 3. For this purpose, the locking pin 5 has a first groove 7a, within which the first contact arm 3a is partially arranged, and a second groove 7b, within which the second contact arm 3b is partially arranged, see also FIG. 1. Because the two contact arms 3a, 3b are arranged opposite one another, the grooves 7a, 7b are also arranged opposite one another. 10 and 11 each show an oblique view of the first housing part 18. The first housing part 18 has a contact recess 24. The contact recess 24 is provided so that during the assembly of the direct connector 1, the contact 2 can be inserted into the first housing part 18 such that the two contact arms 3a, 3b partially protrude from the first housing part 18 and are arranged between the two latching arms 9a, 9b are.

12 and 13 each show a sectional view of the first housing part 18, wherein in FIG. 12 the sectional plane IV-IV is the locking arm plane 14 from FIG. 2 and in FIG. 13 the sectional plane III-III is the contact arm plane 16 from FIG.

14 and 15 each show an oblique view of the second housing part 19 with the one-piece locking pin 5 and the two grooves 7a, 7b.

16 and 17 each show a sectional view of the second housing part 19, wherein in FIG. 16 the sectional plane IV-IV is the locking arm plane 14 from FIG. 2 and in FIG. 17 the sectional plane III-III is the contact arm plane 16 from FIG.

FIGS. 18 and 19 each show a different perspective of the sectional views of the second housing part 19 from FIGS. 16 and 17.

FIG. 20 shows an oblique view of the second housing part 19 from FIG. 14 from a different perspective. The second housing part 19 has an upper latching opening 25a and a lower latching opening 25b. A locking lug 26 of the first housing part 18 can engage in these latching openings 25a, 25b, see also FIG. 11. When the first housing part 18 and the second housing part 19 are in the first relative position, the latching lug 26 is arranged within the lower latching opening 25b. When the first housing part 18 and the second housing part 19 are in the second relative position, the latching lug 26 is arranged within the upper latching opening 25a. The first relative position and the second relative position of the two housing parts 18, 19 and thus also the unlocked state and the locked state of the locking pin 5 are therefore determined by the locking lug 26 and the locking openings 25a, 25b. When a user transfers the two housing parts 18, 19 between the two relative positions by pushing or pulling on the second housing part 19, the user senses that the first relative position or the second relative position is now when the locking lug 26 engages in one of the two locking openings 25a, 25b is reached. FIG. 21 shows a sectional view of the direct plug connector 1, the associated sectional plane being shown in FIG. 2 with the reference symbol XXI-XXI. The first housing part 18 has a centering element 21 in the form of a centering pin, which is received in a corresponding centering element 22 in the form of a centering opening in the circuit board. The centering element 21 is provided to correctly position the direct plug connector 1 when it is fastened to the circuit board 50 and to prevent the direct plug connector 1 from twisting in the fastened state on the circuit board 50.

22 shows a sectional view of a direct plug connector V. The direct plug connector V is an alternative embodiment of the direct plug connector 1 from FIGS. 1-21, the same reference numerals being used for identical and functionally equivalent elements for a better understanding and, in this respect, to the above statements on the embodiment of FIG 1 to 21, so that essentially only the existing differences will be discussed below. The locking pin 5 and the two contact arms 3a, 3b each have a bevel 23. When the two housing parts 18, 19 are transferred from the first relative position into the second relative position, the run-on bevels 23 touch and interact in such a way that the contact arms 3a, 3b are pressed outward. When the contact arms 3a, 3b are inserted into the metallized through opening 40 and the two housing parts 18, 19 assume the second relative position, as shown in FIG. 22, the contact arms 3a, 3b are biased or pressed against a wall of the metallized through opening 40 . As a result, greater stability of the electrical connection between the contact arms 3a, 3b and the metallized through opening 40 is achieved. This can be of great advantage, for example, in mobile applications in which the direct connector V and the circuit board 50 are exposed to vibrations.

As the exemplary embodiments shown and explained above make clear, the invention provides a direct plug connector which has a compact design, is inexpensive to manufacture and increases the stability and reliability of an electrical connection.

Claims

1. Direct connector (1) for establishing an electrical connection between a conductor (30) and a metallized through opening (40) of a circuit board (50), comprising:

a contact (2) with at least one first contact arm (3a), the first contact arm (3a) being designed for the electrical connection of the conductor (30) to the metallized through opening (40),

a fastening element (4) which can assume a fastening position and a release position,

characterized in that

the fastening element (4) is designed in the fastening position for fastening the direct plug connector (1) to the metallized through opening (40).

2. Direct connector (1) according to claim 1, comprising

a locking pin (5) which, in a locked state, prevents the fastening element (4) from being transferred from the fastening position to the release position by means of a positive fit with the fastening element (4) and, in an unlocked state, the fastening element (4) from being transferred from the fastening position to the release position allows.

3. direct connector (1) according to claim 2,

wherein the contact (2) defines a space (6) for receiving the locking pin (5) at least in sections, the first contact arm (3a) at least partially delimiting the space (6), and

wherein the locking pin (5) is arranged at least in the fastening position within the intermediate space (6).

4. direct connector (1) according to claim 3,

wherein the contact (2) has a second contact arm (3b) which is arranged opposite the first contact arm (3a),

wherein the first contact arm (3a) and the second contact arm (3b) at least partially delimit the intermediate space (6).

5. direct connector (1) according to one of claims 2 to 4,

wherein the locking pin (5) has at least one first groove (7a) inside which the first contact arm (3a) is arranged in the locked state.

6. direct connector (1) according to claim 4 and 5,

wherein the locking pin (5) has a second groove (7b) within which the second contact arm (3b) is arranged in the locked state,

wherein the second groove (7b) is arranged opposite the first groove (7a).

7. direct connector (1) according to one of claims 2 to 6,

wherein the locking pin (5) and / or the first contact arm (3a) have a run-on bevel (23) which is each designed so that in the locked state the locking pin (5) pushes the first contact arm (3a) against the metallized through opening (40) biases.

8. direct connector (1) according to one of the preceding claims,

wherein the fastening element (4) has at least one first latching arm (9a) with a first latching nose (10a).

9. direct connector (1) according to claim 2 and 8,

wherein the locking pin (5) in the locked state rests against a rear side (11) of the first latching arm (9a) which faces away from the first latching lug (10a).

10. Direct connector (1) according to one of claims 8 or 9,

wherein the fastening element (4) has a second latching arm (9b) with a second latching nose (10b),

wherein the second locking arm (9b) is arranged opposite the first locking arm (9a).

11. Direct connector (1) according to claim 2 and 10,

wherein the locking pin (5) is designed to be pushed between the first locking arm (9a) and the second locking arm (9b).

12. Direct connector (1) according to claim 4 and one of claims 10 to 11,

wherein the first locking arm (9a) and the second locking arm (9b) lie in a locking arm plane (14),

wherein the first contact arm (3a) and the second contact arm (3b) lie in a contact arm plane (16) and

wherein the locking arm plane (14) and the contact arm plane (16) perpendicular to one another stand.

13. Direct connector (1) according to one of the preceding claims, comprising

a housing (17), the housing (17) having the fastening element (4).

14. Direct connector (1) according to claim 2 and 13,

wherein the housing (17) has a first housing part (18) and a second housing part (19), wherein the first housing part (18) has the fastening element (4) and wherein the second housing part (19) has the locking pin (5),

wherein the first housing part (18) and the second housing part (19) are displaceable relative to one another,

wherein in a first relative position of the first housing part (18) and second housing part (19) the locking pin (5) assumes the unlocked state and wherein in a second relative position of the first housing part (18) and the second housing part (19) the locking pin (5) is in the assumes locked state.

15. Direct connector (1) according to one of claims 13 to 14,

wherein the contact (2) has a securing section (20) which is arranged inside the housing (17) and secures the contact (2) against falling out of the housing (17).

16. Direct connector (1) according to one of the preceding claims, having

a centering element (21) which can interact with a corresponding centering element (22) of the circuit board (50) in order to secure the direct connector (1) against twisting.