EP3593413B1 - Circular plug connector socket for a printed circuit board which can be mounted thereon - Google Patents

Description

The invention relates to a circular connector socket for a printed circuit board that can be arranged on it, according to the preamble of claim 1.

A circular connector plug can be plugged into the circular connector socket, with the contacts of the circular connector socket being able to be contacted with contacts on the printed circuit board.

Various solutions are known in the prior art for contacting connectors with printed circuit boards. Contact pins, contact lugs or strands or wires of the connector are usually plugged or soldered onto contacts on the printed circuit board so that they are in electrically conductive contact with one another. The necessary assembly of the strands or contact pins and the plugging or soldering of the strands, contact pins or contact lugs on the connector and on the circuit board causes additional work steps that are error-prone, time-consuming and expensive. In addition, the connectors are usually inseparably connected to the circuit board.

From the documents CN 105826779A , US 6,238,218 B1 , EP 1 122 822 A2 , DE 10 2013 101 823 A1 , EP 0 744 805 A1 and DE 10 2012 014 519 B3 Connectors of different types are known, in particular the publication CN 105826779A discloses the preamble of claim 1 and shows an adapter connector with a centering groove. the EP 3 067 992 A1 shows an electrical connector kit for a circuit carrier and an interface element that can be fastened to the circuit carrier and has at least one inner contact for contacting at least one electrically conductive line.

The invention is therefore based on the object of overcoming the aforementioned disadvantages and providing a connector socket that can be quickly and easily brought into electrically conductive contact with a printed circuit board, so that error-free and reliable contact between the socket contacts of the connector socket and the contacts or contact surfaces of the Printed circuit board can be produced.

This object is achieved by the combination of features according to claim 1.

According to the invention, a circular connector socket for a printed circuit board that can be arranged on it is proposed. On a rear side facing away from its plug-in side, the circular connector socket has a printed circuit board contact element, which forms at least one, preferably a row of spring contacts. Through the at least one spring contact, a socket contact of the circular connector socket can be connected in an electrically conductive manner to a respective contact surface (contact pad) of the printed circuit board. The socket contact or the socket contacts of the circular connector socket are arranged in a substantially cylindrical socket contact body.

A core idea of the invention is to fix such a circular connector on a housing or a housing wall of a housing as a built-in connector while the printed circuit board is mounted in the housing.

When in contact with the printed circuit board, the spring contact acts resiliently on the printed circuit board, so that the spring contact is pressed by its spring force onto the printed circuit board or the contact pads, which are arranged on the surface of the printed circuit board, and forms an electrically conductive contact with it.

According to the invention, another spring contact of the printed circuit board contact element is opposite the spring contact. The spring contacts are spaced apart from one another, so that the thickness of the printed circuit board can be arranged between the first spring contact and the further spring contact. One spring contact can be brought into contact with the contact surface on an upper side of the circuit board and the other spring contact can be brought into contact with another contact surface on an underside of the circuit board. The spring force of a respective spring contact resiliently presses the spring contact against a respective contact surface of the circuit board. The spring forces of two opposing spring contacts are oriented opposite to each other, so that a printed circuit board is centered and clamped by the spring forces of two opposing spring contacts.

According to the invention, the circular connector socket comprises a circular connector socket housing which has at least one fastening means and one alignment means for alignment and assembly on a housing. Furthermore, a part of the circular connector socket housing is advantageously designed as a mounting flange on which the fastening means and/or an alignment means is arranged.

In a further aspect of the invention, a circular connector socket housing has at least two fastening means and/or alignment means, the fastening means and/or alignment means being arranged asymmetrically on the circular connector socket housing, so that the circular connector socket can be fastened in a predetermined orientation on the housing at corresponding fastening points on the housing.

According to the invention, the fastening means and the alignment means are formed integrally as an elongated hole.

Through a hole or an elongated hole, the circular connector socket housing can be fixed in a position-shiftable manner on a housing by means of screws. Thus, e.g. B. by the same orientation and suitable positioning of all elongated holes, the alignment of the circular connector socket housing relative to the housing can be realized in a defined direction, thereby intercepting system-related and assembly-related tolerances.

In a further advantageous embodiment, the printed circuit board contact element is mounted in a first guide, so that the printed circuit board contact element can be displaced in a first direction relative to the circular connector socket housing. Furthermore, the circuit board contact element is additionally or alternatively displaceable in a second guide in a second direction. The second direction is orthogonal to the first direction, so that the printed circuit board contact element can be rearranged in a plane by a combination of the displaceability in a first and a second direction in order to compensate for tolerances in relation to the printed circuit board. The displaceability in the first and/or second guide can be limited by respective stops, so that a maximum displacement can be specified. Furthermore, the printed circuit board contact element is additionally or alternatively mounted rotatably in a third guide about a central axis of the circular connector socket, so that the orientation of the Spring contacts can be adapted to an orientation of the circuit board.

In an advantageous development, the guide or guides are surrounded by an elastic sealing collar, so that the interior of the circular connector socket is protected from foreign matter and in particular from moisture.

In one embodiment, the circular connector socket housing forms an M16 internal thread for fastening a circular connector plug. The internal thread is arranged around the contact body of the circular connector socket and envelops the contact body in the radial direction.

In a further development of the invention, the at least one spring contact is hook-shaped or spoon-shaped and has a contact tip. The contact tip has a contact area at the apex of the hook-shaped spring contact, with which the spring contact can be contacted at the contact surface with the printed circuit board. The spring contact essentially has five sections, a fastening section with which it is fixed to the printed circuit board contact element, an inner contact section in which the spring contact is electrically conductively contacted with the socket contact, the contact section with the contact area, and a first pitch section and a second pitch section, the determine the hook shape of the spring contact. In order to fix the spring contact on the printed circuit board contact element, the spring contact can be bonded or cast to the fastening section with the printed circuit board contact element.

In an advantageous development, the spring contact is electrically conductively connected to the socket contact via a sliding contact and/or a stranded wire. If the printed circuit board contact element can rotate about a central axis, sliding contacts can be formed between the printed circuit board contact element and the socket contact body, so that the spring contact and socket contact can rotate with constant electrically conductive contact. The spring contacts can be designed in such a way that they lie on different slip rings of the sliding contact, ie are offset from one another in the radial direction.

In an advantageous embodiment, the spring contacts of a first multiplicity or group of spring contacts are arranged adjacent to one another on a first level of the printed circuit board contact element and opposite them is a spring contact of a second multiplicity or group of spring contacts on a second level of the Circuit board contact element adjacent to each other, arranged. The spring contacts of the two levels or the two groups are directly opposite to each other or offset. The spring contacts of the first plurality or group of. Spring contacts and the second plurality or group of spring contacts are each electrically conductively connected to a socket contact in the socket contact body. The total number of the first and the second plurality or groups of spring contacts corresponds to the number of socket contacts.

Advantageously, a dummy contact can be arranged with the spring contacts of the first and/or the second plurality of spring contacts, which is shaped like a spring contact but does not produce an electrically conductive contact, is not connected to a socket contact and has a mechanically stabilizing effect on the printed circuit board.

According to the invention, a circular connector socket with a printed circuit board arranged on it is also proposed. The printed circuit board is arranged with its thickness direction between the spring contacts, so that the spring contacts are in electrically conductive contact with their contact areas on contact surfaces of the printed circuit board.

An advantageous further development provides that the contact surface of the printed circuit board is designed to be wider and longer than a contact area of the spring contact with which the spring contact is in contact with the contact surface. Furthermore, the contact surface alternatively or additionally has a depression, groove or notch along its longitudinal axis for centering the spring contact on the contact surface. Due to the centering and the supporting forces that are brought from the side areas of the indentation, groove or notch to the respectively adjacent spring contact, this is secure and makes contact and is automatically guided to the contact surface during assembly.

The features disclosed above can be combined as desired, insofar as this is technically possible and they do not contradict one another.

Fig. 1

eine perspektivische Darstellung einer Rundsteckverbinderbuchse von schräg vorn;

Fig. 2

eine perspektivische Darstellung einer Rundsteckverbinderbuchse von schräg hinten;

Fig. 3

eine Vorderansicht einer Rundsteckverbinderbuchse;

Fig. 4

eine Rückansicht einer Rundsteckverbinderbuchse;

Fig. 5

eine erste Schnittansicht durch eine Rundsteckverbinderbuchse;

Fig. 6

eine zweite Schnittansicht durch eine Rundsteckverbinderbuchse.

Other advantageous developments of the invention are characterized in the dependent claims or are presented in more detail below together with the description of the preferred embodiment of the invention with reference to the figures. Show it:

1

a perspective view of a circular connector socket obliquely from the front;

2

a perspective view of a circular connector socket obliquely from behind;

3

a front view of a circular connector socket;

4

a rear view of a circular connector socket;

figure 5

a first sectional view through a circular connector socket;

6

a second sectional view through a circular connector socket.

The figures are schematic by way of example. The same reference numbers in the figures indicate the same functional and/or structural features.

In figure 1 A circular connector socket 1 is shown, the circular connector socket housing 12 of which has a substantially square mounting flange 20 . The elongated holes 13, one of which is arranged in a corner of the mounting flange 20, are used to attach the circular connector socket 1 to the circular connector socket housing 12 on a housing. The rear part of the circular connector socket housing 12 with the printed circuit board contact element 10 is located in the intended installation inside the housing in which a printed circuit board is also arranged, which is in contact with the printed circuit board contact element 10 in the intended installation. In order to encode the orientation of the circular connector socket housing 12 during assembly, the assembly flange 20 forms an asymmetrical drilling or fastening pattern through a further elongated hole 25 . The orientation of the circular connector socket 1 is determined by the further slot 25, so that the circular connector socket 1 only in one predetermined, intended position can be installed. The slots 13 and the other slot 25 are aligned with their longitudinal axis parallel, so that the

Circular connector socket 1 is displaceable in the direction of the longitudinal axis, whereby tolerances of the circular connector socket 1 and the contacting of the circuit board contact element 10 are compensated for with the circuit board during assembly. The socket contacts 15 are arranged essentially in a ring shape on the plug-in side of the socket contact body 21 , with a round connector plug being able to make contact with the socket contacts 15 only in a position defined by the coding groove 22 .

The representation of the circular connector socket 1 in figure 2 corresponds to the rear view of the circular connector socket 1 figure 1 . A sealing ring 23 is arranged on the rear side of the mounting flange 20 around the rear part of the circular connector socket housing 12 . If pressure is applied to the mounting flange 20 during assembly of the circular connector socket 1 using screws that are screwed to the housing through the slots 13, 25, the surface pressure between the mounting flange 20 and the housing on the sealing ring 23 creates a seal, so that the The interior of the housing is protected against the ingress of foreign bodies and moisture. The printed circuit board contact element 10 is arranged on the rear part of the circular connector socket housing 12 . It basically consists of three sections. A first section with which it is attached to the circular connector socket housing 12 and two parallel insulating bars that extend along the spring contacts 11. The eight spring contacts 11 are arranged in two opposing groups of four spring contacts 11 each. One group of spring contacts 11 is assigned to one insulating bar. The insulating webs each form a groove for each spring contact 11 of their group of spring contacts 11, from which the spring contacts protrude with the contact tips or contact areas 14 without a circuit board clamped between them and into which the spring contacts 11 are pressed further during assembly or insertion of the circuit board will. The side walls, by which the grooves are delimited to the side, provide short-circuit protection, since the spring contacts 11 do not come into contact with one another when the printed circuit board is displaced orthogonally to the plug-in direction due to the limitation of their movement in this direction by the side walls. By beveling the respective insulating bars, these together with the section of the second pitch of the spring contacts 11 form a forced guidance with centering for the printed circuit boards, so that they automatically move into the intended position during assembly Position are guided. The contact areas on the printed circuit board can each be formed with a width that essentially corresponds to the distance between two adjacent contact springs 11 of a group of contact springs 11, resulting in a tolerance for contacting in a direction orthogonal to the longitudinal direction of the elongated holes 13, 25.

figure 3 FIG. 12 shows a front view of a circular connector socket 1 so that the circular connector socket housing 12 is shown with the slots 13 on the mounting flange 20 which is part of the circular connector socket housing 12. FIG. The front view corresponds to the mating side of the circular connector socket 1.

The four elongated holes 13 are oriented in the same way in their longitudinal direction, so that the circular connector socket 1 can be displaced in the direction of the longitudinal direction. The socket contact body 21 has eight socket contacts 15 and a coding groove 22 . Due to the coding groove 22, the circular connector plug can only be brought into contact with the socket contacts 15 in one orientation.

The circular connector socket 1 is in figure 4 shown in a rear view, so that the circuit board contact element 10 is shown on the back. The printed circuit board contact element 10 forms a spring contact 11 corresponding to each socket contact 15, the upper four spring contacts 11 being in a first. A spring contact 11 of the first group is opposite a spring contact 11 of the second group, so that a printed circuit board can be arranged between the spring contacts 11. To seal an interior of the housing when mounting the circular connector socket 1 on a housing, a sealing ring 23 is arranged on the circular connector socket 1, which seals the mounting flange 20 against an outer surface of the housing when installed as intended.

figure 5 shows the circular connector socket 1 in a sectional view, so that it is cut through the circular connector socket housing 12 with the mounting flange 20, the sealing ring 23 and the socket contact body 21. The sectional view shows two socket contacts 15 in their side view. At its rear end, the socket contact body 21 has a radially circumferential projection with which it can be attached to an in Radial direction inward projection of the circular connector socket housing 12 is present. The socket contact body 21 abuts the circular connector socket housing 12 in the radial direction so that it is fixed in the radial direction. Orthogonal to the radial direction, the socket contact body 21 is fixed by the circumferential projections resting against one another and by a safety ring 24, which engages in the socket contact body 21 and rests against the side of the projection of the circular connector socket housing 12 opposite the projection of the socket contact body 21. The printed circuit board contact element 10 with the spring contacts 11 is arranged on the rear side of the socket contact body 21 .

The apex at which they form the contact area 14 is located at the points at which two opposing spring contacts 11 are closest to one another. The M16 internal thread 16 extends over part of the length of the socket contact body 21 and envelops it over part of the length in the radial direction.

figure 6 12 shows a circular connector socket 1 in a sectional view similar to the sectional view figure 5 , Where instead of the socket contact body 21, the circuit board contact element 10 is shown in section. The coding groove 22 can be seen from a lateral representation on the socket contact body 21 through the non-sectioned representation. Four of the five sections of the spring contacts 11 can be seen through the sectional representation of the printed circuit board contact element 10 . The fastening section protrudes from the circuit board contact element 10 and is cast with it, so that the spring contact 11 is fixed to the circuit board contact element 10 . In each case, the fastening section merges into a section with a first pitch, which merges into a section with a second pitch via the contact crest with the contact area 14 . The second gradient is opposite to the first gradient and steeper than this. The area of the second slope forms a guide together with the shape of the circuit board contact body, so that the circuit board is guided and centered in its intended position when it makes contact with the circular connector socket 1 .

The implementation of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different designs. For example, the circular connector socket could have further contact elements, with which some of the socket contacts can be contacted via the contact elements and stranded wires with other components and/or other contacts on the printed circuit board.

Reference List

1

circular connector socket

10

PCB contact element

11

spring contact

12

Circular connector socket housing

13

Long hole

14

contact area

15

socket contact

16

inner thread

20

mounting flange

21

socket contact body

22

coding groove

23

sealing ring

24

safety ring

25

Long hole

Claims (8)

1. Circular plug-in connector socket (1) for a printed circuit board which can be arranged thereon, wherein the circular plug-in connector socket (1) has, on a rear side facing away from its plug-in side, a printed circuit board contact element (10) which forms at least one spring contact (11) by way of which each socket contact (15) of the circular plug-in connector socket (1) can be electrically conductively connected to a respective contact area of the printed circuit board, wherein the circular plug-in connector socket (1) comprises a circular plug-in connector socket housing (12) which has at least one fastening means and one orientation means for orientation and mounting on a housing, and wherein a further spring contact (11) of the printed circuit board contact element (10) is situated opposite the spring contact (11) and the spring contacts (11) are spaced apart from one another, the printed circuit board can be arranged between the spring contact (11) and the further spring contact (11) and one spring contact (11) can be brought into contact with the contact area on a top side of the printed circuit board and the further spring contact (11) can be brought into contact with a further contact area on a bottom side of the printed circuit board, so that a spring force of a respective spring contact (11) presses the spring contact (11) with spring action against a respective contact area of the printed circuit board, characterized in that the fastening means and the orientation means are of integral design in the form of an elongate hole (13).
2. Circular plug-in connector socket (1) according to Claim 1, wherein the printed circuit board contact element (10) can be moved in a first direction in relation to the circular plug-in connector socket housing (12) in a first guide and/or can be moved in a second direction, which is orthogonal to the first direction, in relation to the circular plug-in connector socket housing (12) in a second guide and/or is mounted in a rotatable manner about a centre axis of the circular plug-in connector socket (1) in a third guide.
3. Circular plug-in connector socket (1) according to either of the preceding Claims 1 and 2, wherein the circular plug-in connector socket housing (12) forms an M16 internal thread (16) for attaching a circular plug-in connector plug.
4. Circular plug-in connector socket (1) according to a preceding claim, wherein the spring contact (11) is designed in a hook shape with a contact dome and the contact dome has a contact region (14) at the apex of the hook-shaped spring contact (11), by way of which contact region the spring contact (11) can make contact with the printed circuit board at the contact area.
5. Circular plug-in connector socket (1) according to a preceding claim, wherein each spring contact (11) is electrically conductively connected to the socket contact (15) via a sliding contact and/or a stranded wire.
6. Circular plug-in connector socket (1) according to a preceding claim, wherein the spring contacts (11) of a first plurality of spring contacts (11) are arranged on a first plane of the printed circuit board contact element (10) and situated opposite each of them directly or with an offset is a spring contact (11) of a second plurality of spring contacts (11) on a second plane, parallel to the first plane, of the printed circuit board contact element (10).
7. Circular plug-in connector socket (1) according to one of the preceding claims with a printed circuit board arranged thereon.
8. Circular plug-in connector socket (1) with a printed circuit board arranged thereon according to the preceding claim, wherein the contact area of the printed circuit board is designed to be wider and longer than a contact region of the spring contact (11), by way of which contact region the spring contact (11) bears against the contact area, and/or the contact area has, along its longitudinal axis, a recess for centring the spring contact (11) on the contact area.

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