CN109728451B

CN109728451B - Tapping plug-in connector

Info

Publication number: CN109728451B
Application number: CN201811258442.0A
Authority: CN
Inventors: 亨里克·比斯
Original assignee: Wago Verwaltungs GmbH
Current assignee: Wago Verwaltungs GmbH
Priority date: 2017-10-27
Filing date: 2018-10-26
Publication date: 2021-12-10
Anticipated expiration: 2038-10-26
Also published as: EP3477793A2; EP3477793B1; DE102017125270B3; EP3477793A3; CN109728451A

Abstract

The invention relates to a plug-in connector of the tapping type, comprising an insulating material housing and a contact element, wherein the contact element is movably supported in the insulating material housing. The contact elements form an electrical line for the electrically conductive contact profile. A spring element is arranged between the support of the insulating material housing and the contact element, and the contact element can be loaded with a spring force by means of the spring element. The spring element is a U-shaped bent leaf spring having a spring leg, a spring bow connected to the spring leg, and an abutment leg connected to the spring bow. The contact element is disposed on the spring leg so as to be movable relative to the spring leg. The contact leg is supported on the support of the insulating material housing and has a wire connection contact.

Description

Tapping plug-in connector

Technical Field

The invention relates to a tapping plug connector (Abgriffsetckverbinder) having an insulating material housing and a contact element which is movably mounted in the insulating material housing and which is designed to make electrically conductive contact with an electrical conductor of an electrically conductive profile, wherein a spring element is arranged between a support of the insulating material housing and the contact element, and the contact element can be loaded with a spring force by means of the spring element.

Background

In order to distribute electrical energy into buildings and to connect lamps at optionally selected locations, conductor rail systems are known which have profiled elements with a comb-shaped cross section with connecting webs and grooves formed there through and electrical lines which are accommodated in the grooves. In such a conductive profile, the electrical lines are received in grooves, for example, on the side walls of the connecting webs, and can be connected electrically conductively by a tap connector to contacts which protrude into the grooves.

DE102011056043B4 shows a conductor rail tapping element with a housing of insulating material and a conductive contact arm which is provided with an electrical conductor for contacting a comb-shaped conductor rail. An electrically conductive holding arm extends parallel to the contact arm, wherein a free space for accommodating a comb tooth of the conductor rail is present between the contact arm and the holding arm. The electrical conductors are contacted conductively laterally by contact arms.

Likewise, DE102007033945B4 discloses a plug connector with a plug connector, which contacts the electrical lines of a comb-shaped plug connector by means of additional springs arranged laterally to the contact lugs.

US3771103A discloses a system for installing electrical wires in a building having an electrically conductive profile with electrical leads received in slots in the profile. For the purpose of wire tapping, a tapping plug connector is provided, which has pin-like contact parts which are sunk into the grooves of the electrically conductive profile and which are placed on the electrically conductive wires to be contacted. The pin-shaped contact is pressed against the electrical conductor by means of a spring pretension. The contact plates of the connecting lines can be clamped, for example, by means of contact screws, which are also provided for fixing springs for the contact plates (kontatfahne).

Disclosure of Invention

The object of the invention is therefore to provide an improved plug connector of the tapping type which ensures reliable terminal contacting for the electrical conductor of the electrically conductive profile in a very compact construction, wherein the contact element can be connected to the electrical conductor in a reliable and simple manner.

This object is achieved by a terminal plug connector according to the invention. Advantageous embodiments are described below.

For such a tap plug connector, it is proposed: the spring element is a U-shaped bent leaf spring having a spring leg, a spring bow connected to the spring leg, and an abutment leg connected to the spring bow. The contact element is disposed on the spring leg so as to be movable relative to the spring leg. The contact leg is supported on a support of the insulating material housing and has a wire connection contact or data connection for connecting an electrical connection line, for example for an input and output line.

By using U-shaped bent leaf springs for the spring elements of the contact elements, the tap plug connector can be designed very flat, wherein sufficient contact forces or contact pressures of the contact elements on the electrical lines can still be achieved. Since the contact element is not connected to the spring element in one piece or in one piece, but rather is mounted on the spring leg so as to be movable relative to the spring leg, the pivoting movement of the spring leg of the spring element is decoupled from the linear movement of the contact element. The contact force of the spring leg is thereby transmitted to the greatest possible extent without frictional losses to the contact element in the case of complete deflection, which is mounted movably in the insulating material housing and prevents the contact element from being deflected when acted upon by a force via the U-bent leaf spring. By means of this decoupling or two-part design of the contact element and the spring element, it is also possible for the two components to achieve a material selection that is optimized with regard to the required properties, such as spring elasticity and electrical conductivity. By means of this two-part construction of the contact element and the spring element, the wire connection contact and the contact element are furthermore decoupled from one another, so that forces caused by the wire pulling advantageously are not transmitted by the wire connection contact to the contact element and thus to the contact point between the contact element and the electrical wire of the electrically conductive profile.

It has proved to be very reliable for the electrically conductive contact between the electrical conductor and the connecting conductor connected to the leaf spring, even if the electrically conductive element is not formed integrally with the leaf spring, but only a bearing between the contact element and the leaf spring. Furthermore, an at least partial coating can be realized on the contact surfaces or contact sections in order to optimize the electrical conductivity on the one hand and/or the friction on the other hand.

The contact leg is supported on a support of the insulating material housing such that the spring force of the leaf spring is concentrated on the contact element by the spring leg, which is movable relative to the supported, stationary contact leg. Since the contact leg has a conductor connection contact, the electrical connection conductor clamped on the conductor connection contact of the contact leg is electrically conductively connected to the electrical conductor of the electrically conductive profile (for example, an electrically conductive rail bar) via the leaf spring and the contact element, with a very compact design and a relatively short current path. Here, the contact resistance is sufficiently small.

The contact elements can be supported in webs of the insulating material housing. The contact element is thereby accommodated in a linearly displaceable manner in a web of the insulating material housing. This lug of the insulating material housing can then be inserted into a groove of the conductive profile, in which groove the electrical line of the conductive profile is arranged. The lug is thereby used on the one hand for supporting and guiding the contact element in that a corresponding free space is present in the lug for accommodating the contact element, and on the other hand for guiding and supporting the tap plug connector in the comb-shaped conductive profile. In this way, the connecting piece can also provide electrical insulation of the side faces of the contact element.

The conductor connection contact can be formed integrally with the leaf spring from a sheet metal of the leaf spring and has a free space for clamping the electrical connection conductor. This has the following advantages: in the case of a simple and compact design and inexpensive production, the wire connection contact can be formed directly on the leaf spring in the forming method. The spring-elastic properties of the leaf spring provided for the force application of the contact element also provide the desired spring properties for clamping the electrical connection line by means of the spring force via the spring arm. The electrical connection line can in this way be simply inserted into the line connection contact of the leaf spring, in order there to be clamped against the line connection contact by means of the spring arm. Plug contacts of this type, which are realized by means of spring arms for electrically connecting wires, have been proven in the wire connection technology.

The wire connection contact can have two spaced spring arms which have a decreasing distance towards their spring arm ends and are designed to clamp the electrical connection wire between the spring arm ends. The pair of spring arms oriented toward one another form a wire lead-in funnel for the electrical connection wire to be clamped. By means of the two spring arms pointing towards one another, the electrical connection line is clamped between the spring arm ends, wherein the contact force is optimally concentrated on the relatively small contact surface of the spring arm ends with the electrical connection line. This increases the pressure per unit area and optimizes the use of the clamping force of the spring arms. In this way, the contact resistance can be reduced and the conductive cross section can be increased by the use of two spring arms.

The side wall can be bent out of the abutting leg of the leaf spring. The spring bow can be formed on the part of the side wall projecting from the abutment leg (freegestellten). By means of such a side wall bent out of the contact leg, a stable surface is provided by folding over, from which a spring arm integrally formed from the side wall projects. Furthermore, the side wall provides a guide wall for an electrical connection line which runs alongside the side wall to the at least one spring arm in order to be clamped in this way by the end of the spring arm.

A plurality of contact elements can be arranged in each case in the insulating material housing in a manner interacting with the spring elements. The electrical conductor of the electrical conductor profile to be contacted can be, for example, a conductor strip, which is provided with a plurality of contact elements, i.e. at least two or more contact elements, which with their spring elements press against the electrical conductor of the electrical conductor profile to be contacted, respectively.

The insulating material housing can have a plurality of webs extending parallel to one another. The contact elements are supported in the webs. In this way, the comb-shaped conductive profile can be contacted by the tap plug connector in such a way that a plurality of electrical lines arranged adjacent to one another in the groove of the conductive profile are contacted by the contact elements sunk into the groove.

It is conceivable that the contact elements can be positioned adjacent at intervals in rows and in at least two rows one behind the other in the insulating material housing. In this way, the air gap and the creepage distance are increased, and the conductor terminals for the input and output conductors to be clamped on the tap plug connector are arranged on a plurality of planes or from two mutually opposite end sides of the tap plug connector.

The term "adjacent" is understood to mean that elements are directly adjacent or that elements are indirectly adjacent, with intervening elements still in a contiguous relationship with each other.

The insulating material housing can be composed of a base body and an insert element in multiple parts. The plug-in elements are therefore designed to receive and support the contact elements and to be optionally plugged into plug-in positions of the base body, which are intended to receive in each case one plug-in element. In this way, the tap plug connector can be matched by inserting and fixing the plug-in element at a selected plug-in position of the base body in such a way that the tap plug connector meets the desired contact requirements of the selected electrical lines of the electrically conductive track. By way of the base body being provided with the insertion elements, the tap plug connector can also be adapted to be plugged onto the electrically conductive profile, optionally rotated by 180 °, depending on the arrangement of the insertion elements. The insert element preferably also accommodates a spring element. The insertion elements can also be arranged movably in a row for phase selection.

The at least one contact element can be designed as a flat plate having a contact end which tapers towards the contact tip. In this way, the tip contact of the electrical conductor of the electrically conductive profile is provided by means of the contact tip, wherein the U-shaped leaf spring contact force is concentrated on the contact tip of the contact element and from there on the electrical conductor to be contacted. The contact tips are also suitable for embedding in electrical lines in order to penetrate the oxide layer in this way. This can further reduce the contact resistance. The flat design of the contact element, which is designed as a knife contact, for example, is particularly advantageously suitable for being accommodated in a recess of a narrow section of an insert element, which is recessed into a groove of the electrically conductive profile.

The end of the contact element opposite the contact end can be widened by bending, folding or also by stamping, and a support for the spring element can be formed. The contact element is thus formed by the plate element, which, via the widened end, provides a sufficient bearing surface for the spring element and is otherwise kept narrow for sinking into the groove of the electrically conductive profile.

Drawings

The invention is explained in detail below on the basis of exemplary embodiments with the aid of the figures. In which is shown:

figure 1 shows a perspective view of the plug-and-socket connector of the tapping type from an oblique front,

fig. 2 shows a perspective view of the plug-and-socket connector of fig. 1 from obliquely behind,

figure 3a) shows a cross-sectional view of an insertion element for a plug-in connection of the tapping type,

figure 3b) shows a sectional view of a modified plug-in element for a plug-in connection of the tapping type,

figure 4a) shows a perspective view of the insertion element from figure 3a),

figure 4b) shows a perspective view of the insert element in figure 3b),

figure 5a) shows a side sectional view of the insertion element from figures 3a) and 4a) in the unloaded state,

figure 5b) shows a side sectional view of the insertion element from figures 3b) and 4b) in the unloaded state,

figure 6a) shows a cross-sectional side view of the insertion element from figure 5a) in a contact state,

figure 6b) shows a side sectional view of the insertion element from figure 5b) in the contact state,

figure 7a) shows a perspective view of a contact element with a U-shaped bent leaf spring,

figure 7b) shows a perspective view of the contact element of figure 7a) with a U-shaped bent leaf spring from a view rotated through 180 degrees,

figure 8a) shows a perspective view of a modified contact element with a U-shaped bent leaf spring,

figure 8b) shows a perspective view of the modified contact element in figure 8a) from a view rotated by 180 degrees with a U-shaped bent leaf spring,

figure 9 shows a partial cross-sectional view of a tap plug connector with a U-shaped bent leaf spring and contact elements placed thereon,

figure 10 shows a perspective view of the plug-and-socket connector of figure 9,

figure 11 shows a perspective view of the plug-and-socket connector of figure 10 from the underside with the cover part,

figure 12 shows a perspective view of an insulating-material housing part for the plug-in connector of the tapping type in figures 9 to 11,

figure 13 shows a perspective view of the underside of the cover member,

figure 14 shows a perspective view of the insulating material housing of figure 12 from the underside,

fig. 15 shows a side sectional view of a further variant of an insertion element with a plurality of contact tips.

Detailed Description

Fig. 1 shows a first embodiment of a plug connector 1 of the tapping type with an insulating material housing 2 formed from a plurality of components. The insulating material housing 2 is composed of a base body 3 and insert elements 4, which likewise each have a housing element made of insulating material.

The base body 3 of the insulating material housing 2 has a transversely running, slit-shaped conductor insertion opening 5 on the front side, which is designed for inserting a plurality of electrical connection conductors 6 into the insulating material housing 2. The electrical connecting leads 6 can thus be introduced into the associated, selected insertion element 4 and clamped there.

It is clear that the contact element 7 projects from the insertion element 4, said contact element being mounted in a linearly displaceable manner in an insulating housing part of the insertion element 4. The contact element 7 is designed as a flat plate with a contact end that narrows to a contact tip 8. The contact tip 8 protrudes from the insert element 4 with the connecting piece at the upper edge of the insert element 4 and can be pushed into the insert element 4 by the action of pressure, so that the contact tip 8 is then approximately flush with the upper edge of the insert element 4 or even sinks further into the insert element.

It is clear that the base body 3 has web elements 9 which project in a web-like manner, wherein the insertion elements 4 can each be inserted into an intermediate space between two such web elements 9. The connecting web 9 forms a connecting web together with the insert element 4. The intermediate space between two such web elements 9 thus provides an insertion point 10 for the insertion of the insertion elements 4, which are arranged one behind the other in a row.

It can also be seen that the base body 3 has two

side walls

11a, 11b on the outside, between which the web elements 9 are connected in a row forming a plurality of webs. These

side walls

11a, 11b can laterally surround the conductive profile. The connecting lug element 9 can be lowered with the insertion element 4 as a connecting lug into a groove of the electrically conductive profile in order to contact an electrical line present there.

Fig. 2 shows a perspective view of the plug connector 1 of fig. 1 from diagonally behind. It can be seen that there are also slit-like conductor lead-through openings 5 for accommodating a plurality of electrical connection conductors 6. Furthermore, two separate line insertion openings 12 in the form of single channels are provided for receiving in each case one electrical connection line 6 of the associated insertion element 4. One of such line feed openings 12 is provided, for example, for a ground connection (protective earth PE) in order to provide sufficient electrical insulation by means of the largest possible air gap and creepage distance through the individual line feed openings 12 with respect to the line carrying the potential.

Another such separate conductor lead-through opening can also be provided for accommodating a data conductor which is likewise sensitive to influences caused by the voltage potential.

It can also be seen that, in the intermediate space between the web elements 9 in the base body 3, there are plug-in points 10 via corresponding free spaces in order to receive the plug-in elements 4 there, which are arranged in a row one behind the other. These plug-in elements can optionally be plugged in at selected, desired plugging positions.

It can also be seen that a substantially shorter web element 13 projects between the two web elements 9 in the transverse direction, i.e. transversely to each longitudinal web. These connecting webs are designed and arranged for sinking into the shallower grooves which alternate with the deeper grooves in the conductive profile to be contacted. The electrical lines in the electrically conductive profile are thus arranged alternately in two planes transversely to the longitudinal extension of the webs and the grooves, so that the contact elements 7 are likewise positioned alternately in two height planes transversely to the web direction.

Fig. 3a) shows a perspective sectional view of an insertion element 4 having an insulating housing part 14, into which a sword-like contact element 7 formed from a flat sheet metal is received. It is clear that the triangular contact tips 8 of the contact elements 7 project from the insertion element housing 14. In the insertion element housing 14, there is a guide slot 15 for accommodating the contact element 7, so that the contact element 7 is supported in a linearly movable manner in the insertion element housing 14. The contact element 7 is laterally covered here by a corresponding side wall section of the insertion element housing 14, which provides a corresponding guide wall.

It can be seen that the insert housing 14 has a lower, wide basic section 16 and a narrower connecting web section 17 connected thereto. The contact element 7 is supported in the connecting piece section 17. The wider base section 16 has a recess for receiving a U-bent leaf spring 18 which rests with legs 19 on a support 20 of the insertion element 14, which is part of the insulating material housing 2. A spring bracket 21 is connected to the contact leg 19, said spring bracket being converted into a spring leg 22 opposite the contact leg 19. The spring leg 22 exerts a spring force in the form of a pressure force on the individual contact element 7, which is placed on the spring leg 22 with an abutment 23 at the end of the contact element opposite the contact tip 8. In this case, the end regions of the spring legs 22 are bent in a U-shape to form a reduced bearing surface 24. The free end of the spring leg 22 connected thereto is bent away from the contact element 7 in the direction of the contact leg 19.

The contact element 7 is thus supported on the U-shaped bent leaf spring 18 and is not connected to the leaf spring 18 here. The contact element 7 and the spring leg 22 of the leaf spring 18 are thus movable relative to one another, wherein the spring leg 22 exerts a spring force on the contact element 7 which moves the contact element 7 in the contact direction K away from the leaf spring 18, so that the contact tip 8 is pressed out of the end edge of the connecting piece section 17 in order to contact the electrical line. Here, a contact force is applied to the electrical conductor of the electrically conductive profile to be contacted via the contact tip 8, said spring force being determined by the leaf spring 18. The leaf spring 18 also has wire connection contacts 25. The wire connection contact is formed in one piece by the abutment leg 19 in the embodiment shown. For this purpose, two side walls 26 lying opposite one another are bent out of the side edges of the abutment legs 19. The side walls 26 project in the same direction towards the contact element 7 and together with the abutment legs 19 which provide the base form a channel for guiding the stripped end of the electrical connection line 6 towards the clamping point. The clamping point is provided by two spring arms 27 which are bent toward one another, i.e. from the plane of the side wall 26 toward the opposite plane of the opposite side wall 26. The spring arm 27 is formed in one piece from the side wall 26 and is cut away from the abutment leg 19. The spring arm 27 is thus movable and can clamp the stripped end of the electrical connection line 6 with its free end. The electrical connection wires are sandwiched between two spring arms 27.

It is clear that, starting from the electrical connection lead 6, the current path is guided to the individual contact elements 7 via the lead connection contact 25 and the U-bent leaf spring 18 integrally formed therewith. The current path is relatively short by means of a compact design and has only contact points on the spring arm 27 (spring tongue) between the spring leg 22 and the contact element 7 with respect to the stripped end of the electrical connection line 6. The contact surfaces of the contacts are reduced such that the corresponding spring force is concentrated on the contacts. The contact resistance is thus very small, ensuring good electrical conduction.

Fig. 3b) shows a perspective section through a modified insertion element 4. It can be seen that the guide slot 15 for accommodating the contact element 7 widens from the leaf spring 18 towards the opposite entry. The guide slit 15 can have, for example, a conically increasing width. The contact element 7 is thereby always also guided by the parallel side walls of the connecting piece section 17, which delimit the guide slit 15. However, the contact element can perform a tilting movement in the widened, V-shaped receiving well. This is advantageous in particular when the length of the contacted electrical conductor is varied.

The contact element 7 has a concavely curved bearing surface for the abutment 23 of the spring leg 22. Since the end side of the support 23 facing the support surface 24 of the leaf spring 18 is arcuately shaped, the friction between the support 23 and the support surface 24 is reduced.

Furthermore, the wire connection contact 25 is arranged on the side of the abutment leg 19 facing away from the spring leg 22, so that the abutment leg 19 rests on the lateral bulge of the cover part 30. Assembly can thereby be simplified.

Fig. 4a) shows a perspective view of the insertion element 4 from fig. 3 a). It is clear here that a narrower connecting web section 17 projects from the wider base section 16, said narrower connecting web section being positioned approximately centrally on the base section 16. It can also be seen that the insert element 4 has a conductor insertion opening 28 in its base part 16 for the insertion of an electrical connection conductor 6 into the conductor connection contact 25.

It can also be seen that the contact tips 8 of the contact elements 7 project from the upper edge of the connecting piece section 17.

Fig. 4b) shows a perspective view of the insertion element 4 from fig. 3 b). It is clear that the entrance of the guide slit 15 is considerably wider than the contact element 7 accommodated therein, which is thus capable of performing a tilting movement.

Fig. 5a) now shows a sectional side view of the insertion element 4, now with the electrical lines 29 of the conductive profiles (not shown) to be contacted, which are arranged above the contact tips 8. It is clear that the contact tips 8 of the contact elements 7 are pressed against the electrical lines 29 in the contact direction K by the clamping force of the U-bent leaf spring 18. The contact tips 8 thereby penetrate into the surface of the electrical lines 29 and through a possible oxide layer and ensure good electrically conductive contact between the electrical connecting lines 6, which are clamped on the line connection contacts 25, and the electrical lines 29 of the electrically conductive profile, which are to be contacted with the contact elements 7.

It is also clear that the conductor connection contact 25 of the U-bent leaf spring 18 is oriented such that the electrical connection conductor 6 to be clamped there runs approximately parallel to the electrical conductor 29 of the electrical conductive profile, which is to be contacted with the contact element 7. For this purpose, the spring arms 27 of the wire connection contacts 25 are oriented transversely to the longitudinal extension direction of the contact element 7 and to the contact direction K. The contact element 7 is here located above the wire connection contact 25 of the U-shaped leaf spring 18, the spring bow 21 of which is located behind said wire connection contact 25 in the wire extension direction of the electrical connection wire 6 in the wire connection contact 25.

It is also clear that the insertion element 4 has a cover part 30, by means of which the basic section 16 is closed after the U-shaped bent leaf spring 18 and the contact element 7 have been inserted into the respective receiving space, and which provides a seat 20 for the leaf spring 18 against the leg 19.

It can also be seen that the contact element 7 has a widened seat 23 on the side opposite the contact tip 8. The abutment 23 can also be formed, for example, by bending, folding or upsetting a plate element from which the contact element 7 is formed. In the embodiment shown, the abutment is formed by a finger projecting laterally from the surface plane of the contact element 7 and an end edge of the contact element 7.

Fig. 5b) shows a sectional side view of the modified insertion element 4 from fig. 3b) and 4b), now with the electrical lines 29 of the electrically conductive profiles (not shown) to be contacted, which are arranged above the contact tips 8. It is clear that the contact element 7, due to the V-shaped widened receiving well, i.e. the guide slit 15, can perform a tilting movement when the contacted electrical line 29 is moved, so that the contact tip 8 still rests on the electrical line 29. Thereby, a length offset can be achieved within the tolerance range without compromising the contact transition.

Fig. 6a) shows a side view of the insertion element 4 from fig. 5a), which is now in the following state: in this state, the contact element 7 is moved counter to the contact direction K in the direction of the wire connection contact 25 and the contact leg 29 of the leaf spring 18. It is clear that the contact element 7 is mounted in a linearly displaceable manner in the insert element housing 16 of the insert element 4. As a result of the reduced distance between the electrical conductor 29 of the electrically conductive profile (not shown) to be clamped and the insertion element 4 in relation to the state in fig. 5, the contact element 7 is pressed further into the insertion element 4. The leaf spring 18 now exerts a spring force in the contact direction K by the resulting displacement of the spring leg 22 toward the contact leg 19, which spring force presses the contact tip 8 relatively strongly against the electrical conductor 29 of the electrical conductor profile to be clamped. Thereby, a very reliable electrical contact is provided. The electrical contact is largely independent of the distance between the insertion element 4 and the electrical conductor 29 of the conductive profile to be clamped in the following region: in this region, the contact element 7 is free to move in the insertion element 4 and does not touch the boundary wall of the insertion element 4.

Fig. 6b) shows a side view of the modified insertion element 4 from fig. 5b) in a deflected contact state. In this contact state, the contact element 7 can also execute a tilting movement due to the guide slot 15 widening towards the entrance, by means of which the contact tip 8 can be moved in the direction of extension of the contacted electrical line 29 in order to compensate for a change in length of the electrical line 29.

Fig. 7a) shows a perspective view of a U-shaped bent leaf spring 18 with a wire connection contact 25 integrally formed thereon. It is clear here that the contact leg 19 tapers, i.e. becomes narrower, in the region of the wire connection contact 25. It can also be seen that the side walls 26 lying opposite one another are bent out from the side edges from the abutment legs 19. Then, a spring arm 27 projecting toward the spring bow 21 is connected to the side wall 26. The spring arms are inclined towards each other and are bent out of the respective plane of the side wall 26.

It can also be seen that the spring leg 22 with the U-shaped bend at the free end has a contact surface 24. The contact surface 24 rests on the abutment 23 of the individual contact element 7. The abutment 23 is formed via the end side of the contact element 7 opposite the contact tip 8. In order to prevent the contact pins 7 from falling out, the abutment 23 can be widened in the width direction as shown relative to the main section of the contact element 7 connected thereto. It is also conceivable for the contact element 7 to be bent in this region also transversely to the surface of the contact element in order to form a seat surface and a stop.

It is also clear that in this embodiment the contact element 7 has a moulded part

31. In this case, for example, an approximately central region extending in the contact direction K is bent out of the main plane of the contact element 7. By shaping the contact element 7 in this way to form the embossed portion 31, an improvement is obtainedThe bending rigidity of the contact element is improved.

Fig. 7b) shows a perspective view of the U-bent leaf spring 18 and the contact element 7 from a perspective rotated by 180 degrees with respect to fig. 7. It can be seen that the contact element 7 can be moved relative to the spring leg 22 and rests on the arched contact surface 24. Spring arms 27 which project from the side walls 26 which extend parallel to one another at a distance and are directed toward one another and via which the channel width tapers from the side walls 26 and which can grip the electrical connection lines 6 with their free end edges.

Fig. 8a) shows a perspective view of a modified contact element 7 with a U-shaped bent leaf spring 18. In this case, the wire connection contact 25 with the spring arm 27 is arranged on the lower side of the contact leg 19: said side being opposite the spring leg 22 and the contact element 7. The contact leg 19 thus delimits the conductor receptacle toward the spring leg 22, while the cover element 30 delimits the conductor receptacle on the opposite side. The abutment legs 19 and the cover element 30 thereby contribute to guiding the electrical line to the clamping point on the spring arms 27.

It is also clear that the abutment 23 is concavely curved at the bearing surface 24 of the spring leg 22. Thereby reducing friction between the bearing surface 24 and the abutment 23.

Fig. 8b) shows a perspective view of the modified contact element 7 from fig. 8a) from a perspective rotated by 180 degrees. It is clear here that the bearing surface 24 of the spring leg 22 dips into a recess of the support 23, which is produced by the arcuate curvature.

Fig. 9 shows a further exemplary embodiment of a plug connector 1 in partial perspective view. It can be seen that the insulating material housing 2 is formed in multiple parts and has a base body 3, in which the U-shaped bent leaf spring 18 and the contact element 7 are accommodated. The base body 3 in this embodiment has integrally formed webs which run parallel to one another and with free space left and which are adapted to the corresponding grooves of the conductive profiles to be contacted. The webs 9 are for example alternately of different heights, so that short and high webs alternate. In this case, the contact elements 7 are inserted in a displaceable manner in recesses of such webs or, in conjunction with the separate insertion element 4, are formed in the intermediate spaces between such webs 9.

In the embodiment shown, the contact elements 7 and the leaf springs 18 provided for the short connecting tabs are accommodated directly in the base body 3.

It can also be seen that the base body 3 is covered on the underside by a cover element 32 which serves as a support for the leaf spring 18 against the leg 19. Thereby, the contact element 7 and the leaf spring 18 can be inserted in the base body 3. Subsequently, the base body 3 is closed by a cover element 32, which is locked to the base body 3 by suitable locking elements or is connected by a joint, for example by means of gluing or welding.

Fig. 10 shows a perspective view of the plug connector 1 of fig. 9. It is clear here that the contact elements 7 are formed at intervals in rows R1, R2 in the base body 3, wherein the two rows R1, R2 are positioned one behind the other in the insulating material housing 2. It is also conceivable that there are more than two rows R1, R2, for example three or four rows, or that there may also be only one row R1.

In the embodiment shown, contact elements 7 for the shorter webs 9 in the first row R1 and contact elements 7 for the higher webs 9 in the second row R2 are provided. Thereby, the contact distance and the air gap and the creepage distance between adjacently arranged connection tabs 9 are improved compared to a solution in which adjacently arranged connection tabs 9 have their contact elements 7 in the same row.

Fig. 11 shows a partially perspective view of the plug connector 1 of fig. 9 and 10. It is clear here that the base body 3 is closed by a cover element 32 which serves as a seat for the U-shaped bent leaf springs 18 which are formed in the base body 3 in a first row.

Fig. 12 shows a perspective view of the base body 3 of the plug connector 1 of fig. 9 to 11. It is clear that the base body 3 has receiving chambers 33 which are adjacent in a row R1 and are separated from one another by intermediate walls. These receiving cavities are matched to receive the U-shaped bent leaf spring 18. From the receiving chamber 33, a substantially rectangular guide opening 34 leads into the non-visible web on the opposite side in order to receive the contact elements 7, respectively.

Fig. 13 shows a perspective view of the cover part 32 from the bottom, with the parallel-arranged, cuboid-shaped supports 35, which are positioned at a distance from one another in a row. These cuboid seats 35 are adapted to be inserted into the receiving space 33 of the base body 3 in fig. 12 and provide a seat for the leaf spring 18 against the leg 19 there.

Fig. 14 shows a perspective view of the base body 3 from the side opposite to fig. 12. It is clear here that guide openings 34 are provided in the shorter webs 9, which lead to the respective receiving space 33 and are adapted to receive the contact elements 7. It is also clear that the webs 9 which are arranged adjacent in the transverse direction and extend parallel in the common longitudinal direction end in free spaces 35 which provide plug-in positions for individual plug-in elements 4 in order to arrange contact elements for the higher webs 9.

Fig. 15 shows a side sectional view of a further variant of the insertion element 4, in which the contact element 7 has a plurality of contact tips 8. These contact tips 8 are caught in the electrical conductor 29 to be contacted. In the event of a change in the length of the electrical line 29, the support 23 moves relative to the bearing surface 24 of the leaf spring 18. The guide slot 15 is so wide here that the contact element 7 can be moved to and fro to the left and to the right in the viewing direction. In this way, the contact element 7 can follow the movement of the electrical line 29 in its direction of extension.

Claims

1. A tap plug connector (1) having an insulating material housing (2) and having a contact element (7) which is mounted in the insulating material housing (2) in a movable manner and which serves for electrically conductive contacting of an electrical conductor of an electrical conductive profile, wherein a spring element is provided between a support (20, 35) of the insulating material housing (2) and the contact element (7), and the contact element (7) can be spring-loaded by means of the spring element, characterized in that the spring element is a U-bent leaf spring (18) having a spring leg (22), a spring bow (21) connected to the spring leg (22) and an abutment leg (19) connected to the spring bow (21), the contact element (7) being placed on the spring leg (22) in a relatively movable manner with respect to the spring leg (22), and the contact leg (19) is supported on the support (20, 35) of the insulating material housing (2) and has a wire connection contact (25).

2. The tap plug connector (1) according to claim 1, characterized in that the contact element (7) is supported in a web of the insulating material housing (2).

3. The tap plug connector (1) according to claim 1 or 2, characterized in that the wire connection contact (25) is formed integrally with the leaf spring (18) from a sheet metal material of the leaf spring (18) and has a spring arm (27) for clamping an electrical connection wire.

4. The plug connector (1) according to claim 3, wherein the wire connection contact (25) has two spaced-apart spring arms (27) which have a decreasing distance toward their spring arm ends and are designed to clamp an electrical connection wire between the spring arm ends.

5. The tap plug connector (1) according to claim 3 or 4, characterized in that a side wall (26) is bent out of an abutment leg (19) of the leaf spring (18) and the spring arm (27) is formed by a portion of the side wall (26) projecting out of the abutment leg (19).

6. The plug-and-socket connector (1) according to one of the preceding claims, characterized in that a plurality of contact elements (7) are respectively provided in the insulating-material housing (2) in a manner co-acting with spring elements.

7. The plug-in connector (1) according to claim 6, characterised in that the insulating-material housing (2) has a plurality of webs (9, 17) which extend parallel to one another, and in that the contact elements (7) are supported in the webs (9, 13).

8. The tap plug connector (1) according to one of the preceding claims, characterized in that the contact elements (7) are positionable adjacent to one another in rows (R1, R2) at intervals and in at least two rows (R1, R2) one behind the other in the insulating-material housing (2).

9. The plug-in connector (1) according to one of the preceding claims, characterised in that the insulating-material housing (2) is multi-part and has a base body (3) and plug-in elements (4), wherein the plug-in elements (4) are designed for receiving and supporting contact elements (7) and for being optionally plugged into plug-in positions (10) of the base body (3) for receiving in each case one plug-in element (4).

10. The plug-in connector (1) according to one of the preceding claims, wherein at least one of the contact elements (7) is designed as a flat plate having a contact end with at least one contact tip (8).

11. The tap plug connector (1) according to claim 10, characterized in that the end of the contact element (7) opposite the contact end is widened and forms an abutment (23) for the spring element.

12. A tap plug connector (1) having: an insulating material housing (2) formed by a base body (3) and optionally an insert element (4) insertable into the base body; at least one contact element (7) for electrically contacting an electrical conductor of an electrically conductive profile, characterized in that the insertion elements (4) are designed to receive and support the contact elements (7) and to be optionally inserted into plug-in positions (10) of the base body (3) for receiving in each case one insertion element (4), wherein a spring element is provided between a support (20, 35) of the insertion element (4) and the contact element (7), and the contact elements (7) can be loaded with a spring force by means of the spring element, wherein the spring element is a U-shaped bent leaf spring (18) having a spring leg (22), a spring bow (21) connected to the spring leg (22), and an abutment leg (19) connected to the spring bow (21), wherein the contact elements (7) are arranged on the spring leg (22) so as to be movable relative to the spring leg (22), and wherein the contact elements (7) are arranged so as to be movable relative to the spring leg (22) And the contact leg (19) is supported on the support (20, 35) of the insertion element (4) and has a wire connection contact (25).

13. The plug-and-socket connector (1) according to one of the preceding claims, wherein the contact element (7) is mounted in a free space (15) so as to be movable obliquely or transversely to the direction of extension.