DE102016002135A1 - Arrangement for detachably fixing an electrical connector to a wiring carrier - Google Patents

Abstract

The invention relates to an arrangement for releasably fixing an electrical connector on a wiring carrier, wherein the connector consists of an insulating housing having on opposite housing sides insertion openings, such that on a first side electrical contact pins and on a second side insulation-free ends of electrical conductors insertable , in particular be clamped. Furthermore, a plug-in strip compatible with the insertion openings on the first side can be fastened to the wiring carrier. The insulating housing has at least one hook-shaped or nose-like projection projecting from the insulating housing, which is located on the housing side wall, which runs essentially parallel to the insertion direction for the electrical contact pins. On the wiring support a spring clip is attached, which has a latching portion which engages behind the protruding from the insulating housing of the connector protrusion when plugging the connector on the connector strip and forms a stop against pulling out of the connector.

Description

The invention relates to an arrangement for releasably fixing an electrical connector on a wiring support, wherein the connector consists of an insulating housing which has insertion openings on opposite housing sides, such that on one side electrical contact pins and on a second side insulation-free ends of electrical conductors can be inserted , in particular can be clamped, further on the wiring support to the insertion on the first side compatible plug strip is fastened, and with at least one hook-like or nose-like protruding from the insulating housing projection, which is located on the housing side wall, which is substantially parallel to the insertion direction extends for the electrical contact pins, according to claim 1.

From the EP 1 850 418 B1 An electrical connector is previously known, which consists of an insulating material housing having on two opposite sides housing insertion, on the one hand for the insertion of electrical contact pins and on the other side for the insertion of insulation-free ends of electrical conductors. On the conductor side of the prior art connector has for each electrical conductor to be connected a leaf spring clamp with a leaf spring, which is suitable to extend in the conductor insertion direction and obliquely against the electrical conductor and with its leaf spring end the insulation-free end of the inserted electrical conductor terminals.

The insulating material of the connector provides a connection space for each electrical conductor to be connected, in which the contact pin and the electrical conductor can be kept fixed in position next to one another with approximately parallel alignment with the overlap of the contact pin.

By the construction described above, it is possible to provide a connector whose size is reduced compared to the hitherto known prior art, so that the connector can be used in a confined space both as a single-pole and multi-pin connector.

From the DE 20 2011 000 835 U1 is a bus-capable, attachable connection and / or function module for controlling and / or monitoring of technical processes or for building automation previously known, which has a block-like structure. The previously known functional module can be combined with other modules to form a connection system and has at least one base-plate carrier and an attachable housing. In the housing there is a printed circuit board and / or a punched grid or even a busbar arrangement. In addition, at least one bus conductor contact for forwarding at least one energy or data bus in the direction of arrangement is present.

In known overvoltage protection arrangements for information and telecommunications technology, z. As a divisible arrester for DIN rail mounting, the connection of the equipment to be protected on existing wire terminals is very expensive, often the number of wires to be connected requires a variety of screw terminals, which can be integrated only poorly in a corresponding housing. In the event of the need for a through connection in the sense of a bus communication line for the data exchange between a plurality of juxtaposed devices, it has been necessary in the field of overvoltage protection to carry out a separate cable connection in this regard. When replacing appropriate devices or for measurement and testing purposes, it is therefore necessary to solve more terminals with the result of a more complex handling.

In principle, there is the possibility of electrical connectors according to the type EP 1 850 418 B1 also to be used in overvoltage protection arrangements, in particular for information and telecommunications technology, and starting from a circuit board located in the overvoltage protection arrangement as a wiring carrier, to carry out communication connections that are detachable. A provided with electrical conductors connector can be completely deducted from a connector strip after loosening an optional lock, so that an exchange of an overvoltage protection device, which is for example din rail mounted, is possible. Since the space is limited especially in arrangements for DIN rail mounting and the actual overvoltage protection device has a variety of other electronic and electrical components to pick up, there is a need for even more compact connectors with the possibility of a locking function to preclude unwanted pulling of the connector and thus a malfunction

From the foregoing, it is therefore an object of the invention to provide a further developed arrangement for releasably fixing an electrical connector on a wiring carrier, wherein the connector in a conventional manner consists of an insulating housing having insertion openings on opposite sides of the housing, such that on a first side electrical contact pins and on a second side insulation-free ends of electrical conductors insertable, in particular are clamped. The arrangement to be created is intended to ensure the possibility of direct attachment to a wiring carrier or a printed circuit board and at the same time allow a secure locking and unlocking of the connector. In particular, the connector strip is to be relieved of function or locked by locking means for securing a recorded female connector.

The object of the invention is achieved by the combination of features according to the teaching of claim 1, wherein claim 5 turns off on a particular embodiment of the inventive arrangement for use in an outer housing, in particular such an outer housing for a surge protection device, in particular for information and telecommunications technology. The subclaims represent at least expedient refinements and developments of the invention.

Accordingly, the solution according to the invention is based on a per se known electrical connector, which is releasably fixable on a wiring carrier.

The connector is single or multi-pole and / or single or multi-row and consists of an insulating housing, which has insertion openings on opposite sides of the housing.

On the one hand, the insertion openings are designed so that electrical contact pins can be inserted. On the second side, insulation-free ends of electrical conductors can be inserted via the insertion openings and, in particular, clamped there. Electrically, the construction of the connector ensures that contact between the insulation-free ends and the electrical contact pins is ensured.

On the wiring support is compatible with the insertion on the first side connector strip, in particular fastened by soldering. Furthermore, at least one hook-shaped or nose-like projection protruding from the insulating housing is provided on the insulating housing, which projection is located on the housing side wall, which runs essentially parallel to the insertion direction for the electrical contact pins.

According to the invention, a spring clip is now fastened directly on the wiring support, which has a latching section which engages behind or projects against the protruding from the insulating housing of the connector when plugging the connector onto the connector strip, so that a fuse against pulling out of the connector is formed.

The spring clip can z. B. be formed as a wire-shaped spring clip. It is also possible to realize the spring clip as a punched and bent part.

The spring clip according to the invention is biased in the direction of the housing side wall with protruding projection, wherein by inserting a tool between the relevant housing side wall and the spring clip, the connector is removable. When inserting the tool so the spring clip comes out of contact with the protruding projection, so that the removal of the connector can be done by the corresponding compatible connector strip.

The ends of the spring clip are soldered to the already mentioned wiring carrier in conventional technology, wherein in the region of a respective solder island, the ends of the spring clip are angled and the resulting or resulting angled portion of the spring clip forms a support and support surface based on the corresponding surface of the wiring substrate ,

At the Abwinklungsabschnitt for the support and support surface each extending another bending section, wherein in the space between the bending sections and the two ends of the spring clip, the wiring carrier is recessed or cut to the desired mobility of the spring clip, in particular when inserting the tool for pulling the connector to ensure.

The arrangement according to the invention is located in a preferred embodiment of the invention within an outer housing, in particular of such an outer housing of an overvoltage protection arrangement for information and telecommunications technology.

The outer housing has, in the region of the position of the connector, an opening with a guide channel for centering insertion of the connector. A recess in the guide channel also allows plugged connector insertion of the tool and a Abrückbewegung of the spring clip with Außerkontaktkommen of protruding from the insulating housing projection. When the corresponding tool is removed, the spring clip moves back to its preloaded initial position and is prepared for a new latching connection.

The spring clip has a handle-like offset in one embodiment. This crank allows the desired movement of the spring clip as a combination of rotation and tilt under the action of the torsion restoring forces, especially when a wire-shaped spring clip is used.

It should be mentioned at this point that the hook-shaped or nose-like protruding from the insulating housing projection has a wedge shape or insertion bevel for easier insertion and pushing away of the spring clip, until the end position and locking position has been reached.

Within the guide channel, a space for dipping the spring clip is further formed, in particular for the phase of insertion of the connector, but also for moving away the spring clip during insertion of the tool for the purpose of pulling the connector.

The free space in the guide channel adjacent supporting surfaces or support edges are provided for the spring clip, so that forces when pulling and plug not necessarily beyond the extent necessary transferred to the respective solder island and thus it comes to an adverse effect on the preferred solder joint of the spring clip.

As already mentioned, in a preferred embodiment, the outer housing is part of an overvoltage protection arrangement, wherein electrical conductors for data transmission, in particular for a bus system, can be contacted by means of the insertion opening.

The spring clip is made in a further preferred embodiment of the invention of an electrically conductive material and can electrical potential, for. B. earth potential or be used as an electrical connector or bridge element. In this respect, the spring clip is a double function as a mechanical locking element, but also passive electrical component.

The invention will be explained below with reference to an embodiment and with the aid of figures.

Hereby show:

1 an overvoltage protection arrangement for information and telecommunications technology, consisting of an outer housing formed on the housing bottom means for DIN rail mounting, located in the housing overvoltage protection elements and electrical connection means together with exemplary arrangement of the invention further developed electrical connector with pull-out;

2 a representation similar to that after 1 but with the outer case removed and internally recognizable electrical connectors together with spring clips and two printed circuit boards as electrical wiring supports;

3a and 3b Detailed representations of the fixable on a wiring substrate with connector strip electrical connector in the secure state ( 3a ) and with the unlocking tool ( 3b );

4a and 4b Representations analogous to those after 3a and 3b , but without tools once in the locked state ( 4a ) and once in the unlocked state ( 4b );

5a to 5c various views of the inventive arrangement with electrical connector, wherein 5a and 5b a part of the outer casing (see 1a ) with guide channel and 5c illustrates the possible direction of movement of the spring clip for pulling the electrical connector, and

6a and 6b an embodiment of the spring clip as a punched and bent part.

In an inventive use of the arrangement for releasably fixing an electrical connector within an overvoltage protection arrangement according to the 1 and 2 The local overvoltage protection arrangement has an outer housing which has the shape of an inverted T.

The housing has a bar-shaped base body 1 and a protruding headboard 2 ,

At the bottom of the bar-shaped main body 1 is a return 3 provided for the purpose of DIN rail mounting of the corresponding overvoltage protection device.

A first level on the bar-shaped main body 1 is called horizontal level 4 and a second level as a vertical plane 5 designated. Both on the horizontal plane 4 are electrical connection means 6 as well as on the vertical plane 5 electrical connection means 7 arranged accessible.

In a preferred embodiment, the first electrical connection means are designed as connector terminals for wire connection. The horizontal plane 4 can be inclined, ie be formed as an inclined surface, so that an optimal insertion of connecting lines in addition to pulling the connector is possible.

In the vertical plane 5 can z. B. sockets or plugs. The representation after the 1 and 2 shows as connection means 7 a BNC socket.

The mentioned inclined surface is in the 1 with the reference number 8th symbolizes.

Another level 9 the third level is the arrangement of a terminal in alignment with the neighboring device when juxtaposing various overvoltage protection arrangements, for. B. for through-connection for data exchange between adjacent devices.

As 2 shows are inside the outer casing 1 two spaced circuit boards 10 and 11 arranged, which have a surface shape, which is substantially the longitudinal sectional area of the outer housing 1 equivalent.

In the space between the circuit boards 10 and 11 are each connectors 6 for the wire connection or a plug or a socket 7 for connecting a coaxial conductor.

The circuit boards 10 ; 11 In addition, carry the actual overvoltage protection elements, eg. B. varistors 12 , and serve for fixing function displays or the like.

The connectors 6 consist of an insulating housing 13 , which on opposite sides insertion openings 14 having. In the 1 and 2 is only the upper side with insertion opening 14 shown, the insulation-free ends of electrical conductors can accommodate a clamping. The opposite, quasi-lower side serves to accommodate electrical contact pins one on the respective circuit board 10 ; 11 attached, compatible power strip 15 ,

From the insulating housing protrude hook or nose-like projections 16 from.

On the respective wiring carrier 10 ; 11 is according to the invention a, z. B. wire-shaped spring clip 17 attached, which has a latching section 18 having, when plugging the connector 6 on the power strip 15 from the insulating housing 13 of the connector 6 protruding lead 16 engages behind. In this respect, the projecting edge forms 16 after relaxing the spring clip 17 towards the connector 6 a stop.

By inserting a tool 19 as in the 3a and 3b shown, by means of insertion between the relevant housing side wall and the spring clip 17 , the connector in the illustration according to the 3a and 3b upwards from the power strip 15 subtracted from.

The 4a shows in this respect a representation with a locked connector 6 and the 4b an illustration with weggedrücktem wire-shaped spring clip 17 so that the respective projections 16 to uncover and the connector 6 , optionally with electrical conductors connected thereto, from the connector strip 15 , optionally supported by the force of a biased spring (not shown), is removable.

In particular from the representations after the 3a . 3b and 5a to 5c is the embodiment of the spring clip 17 comprehensibly.

The spring clip 17 is insofar with a respective wiring carrier 10 soldered, wherein in the area of a respective Lotinsel the ends 17.1 of the spring clip 17 are executed angled. By this bend creates a Abwinklungsabschnitt, a support and support surface based on the corresponding top of the wiring substrate 10 forms. This relieves the actual soldering in the area of the solder island. The solder island extends around the corresponding opening in the printed circuit board 10 to record the free pages 17.2 of the spring clip.

At Abwinklungsabschnitt for the formation of the support and support surface of the spring clip 17 closes another on torsion claimable bending section 17.3 on, with the space between the bending sections 17.3 the wiring carrier 10 has a recess, as in particular from the 3b and 5c becomes clear.

The tool 19 For unlocking has at its lower end a wedge-shaped nose 19.1 , with the help of the spring clip 17 from its abutment position for the purpose of locking the connector in a release position can be transferred. The connector 6 will then be together with the tool 19 when reaching the release position in the representations after the 3a and 3b deducted to the top.

Depending on the geometry and design of the connector 6 with its projections 16 can the spring clip 17 another handle-like crank 17.4 have (see 3a and 3b ).

The 5a and 5b show a detail of the outer casing 1 (please refer 1 ). This outer case 1 owns in the area for receiving the connector 6 an opening with guide channel 20 for centering insertion of the connector 6 ,

Inside the guide channel 20 is a free space 21 for dipping the spring clip 17 educated.

The free space 21 can be adjacent in the guide channel 20 In addition, still supporting surfaces or support edges for the spring clip 17 be provided.

The one on the wiring carrier 10 arranged spring clips 17 or the hanger 170 can consist of an electrically conductive material and thus lead to a potential or be used as a passive electrical component or bridge element use.

The representations after the 6a and 6b show an embodiment of a spring clip as a stamped and bent part. The 6a corresponds essentially to the representation according to the 3a , but with the stamped and bent part used here 170 ,

This stamped and bent part 170 also has free ends 172 on and has a support and support surface 171 ,

Another section 174 fulfills the functions similar to the handle-like crank 17.4 of the wire-shaped spring clip.

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• EP 1850418 B1 [0002, 0007]
• DE 202011000835 U1 [0005]

Claims (7)

Arrangement for detachably fixing an electrical connector ( 6 ) on a wiring carrier ( 10 ; 11 ), wherein the connector ( 6 ) from an insulating housing ( 13 ), which on opposite housing sides ( 14 ) Has insertion openings, such that on a first side electrical contact pins and on a second side insulation-free ends of electrical conductors are inserted, in particular clamped, further on the wiring substrate ( 10 ; 11 ) a plug-in connector compatible with the insertion openings on the first side ( 15 ) is fastened, as well as with at least one hook-like or nose-like, from the insulating housing ( 13 ) protruding projection ( 16 ), which is located on the housing side wall, which runs substantially parallel to the insertion direction for the electrical contact pins, characterized in that on the wiring carrier ( 10 ; 11 ) a spring clip ( 17 ), which has a latching section ( 18 ), which when plugging the connector ( 6 ) on the power strip ( 15 ) from the insulating housing ( 13 ) of the connector ( 6 ) protruding projection ( 16 ) and a stop against pulling out of the connector ( 6 ). Arrangement according to claim 1, characterized in that the spring clip ( 17 ) in the direction of the housing side wall with protruding projection ( 16 ) is biased, whereby by introducing a tool ( 19 ) between the relevant housing side wall and the spring clip ( 17 ) the connector ( 6 ) is removable. Arrangement according to claim 1 or 2, characterized in that the ends of the spring clip ( 17 ) with the wiring substrate ( 10 ; 11 ) are soldered, wherein in the region of a respective Lotinsel the ends of the spring clip ( 17 ) are executed angled and the resulting Abwinklungsabschnitt of the spring clip ( 17 ) forms a support and support surface. Arrangement according to claim 3, characterized in that at the angled portion for the support and support surface in each case a further bending section ( 17.3 ), wherein in the space between the bending sections ( 17.3 ) the wiring carrier ( 10 ; 11 ) is cut out or cut free. Arrangement according to one of the preceding claims, characterized in that this within an outer housing ( 1 ), wherein the outer housing ( 1 ) in the area of the connector ( 6 ) an opening with guide channel ( 20 ) for centering insertion of the connector ( 6 ) having. Arrangement according to claim 5, characterized in that in the interior of the guide channel ( 20 ) a free space ( 21 ) for immersing the spring clip ( 17 ) is trained. Arrangement according to claim 6, characterized in that the free space ( 21 ) adjacent in the guide channel ( 20 ) Support surfaces or support edges for the spring clip ( 17 ) are provided.

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