DE202016103581U1 - Terminal block for electrically contacting conductors - Google Patents

Abstract

Terminal block for electrically contacting conductors, comprising - an insulating housing (2); - A busbar (5) which is arranged in the insulating housing (2); - One or more terminal points (3), which in the longitudinal direction of the busbar (5) in each case an opening (6) in the busbar (5) for receiving and for contacting an electrical conductor (4), a leaf spring (7) for clamping the electrical Conductor (4), when this is inserted into the opening (6), and a plug-in channel (9) are associated, which in the insulating housing (2) in a housing channel (8) and the busbar (5) is arranged upright; - An adjacent channel (10) in the housing channel (8) adjacent to the insertion channel (9) and the busbar (5) is arranged upright, wherein the insertion channel (9) and the adjacent channel (10) in a busbar (5) distal Housing channel portion (11) by a in the housing channel (8) projecting partition (12) are separated and converge in a busbar (5) proximal housing channel portion (13) above the associated aperture (6) in the busbar (5); and - an actuating element (14) which is received in the adjacent channel (10) and displaceable between a starting position and an actuating position along the adjacent channel (10), wherein - a shift into the actuating position against a biasing force of the leaf spring (7) takes place and in this case a clamping portion (15) of the leaf spring (7) at least partially releasably pivots the aperture (6), so that the electrical conductor (4) in the opening (6) can be inserted, and - the actuating element (14) with respect to the busbar (5) has a proximal and a distal stop (26), (27) which are spaced in the longitudinal direction of the actuating element (14) and which limit the displacement movement of the actuating element (14) in the adjacent channel (10) and in this case with a respectively associated Channel stop (28), (29) cooperate.

Description

The invention relates to a terminal for electrically contacting conductors.

background

Such terminal blocks are used for electrical contacting of conductors. In the terminal block one or more terminal points are arranged in an insulating housing, in each of which an electrical conductor is clamped by means of an associated spring clamping mechanism for electrical contacting with a busbar.

A terminal block for electrical conductors is in the document DE 28 25 291 C2 disclosed. The clamping points formed along a busbar have an opening in the busbar, on which a hole collar running around the opening is formed, which extends downwards from the busbar. The inserted conductor is pressed by means of an associated leaf spring against an upright inner surface of the hole collar. The electrical conductor to be clamped passes through an insertion channel, which is formed in the insulating housing, to the associated opening in the busbar. Adjacent to the insertion channel, a channel is provided in the insulating housing, which serves for inserting an actuating push-button or for introducing an actuating tool for opening the clamping point.

In the document EP 1 391 965 B1 a spring clamp connection for an electrical conductor is described. Unlike the clamping mechanism in the document DE 28 25 291 C2 If the inserted electrical conductor does not abut against the inner surface of a hole collar, but is pressed by means of the clamping spring against a transverse edge presented to the electrical conductor, a clamping transverse edge of the clamping spring of the projecting transverse edge being arranged opposite one another.

Summary

The object of the invention is to provide a terminal for electrically contacting conductors, in which the repeated operation of the terminal points for insertion and removal of a conductor in a safe and easy way is possible.

To achieve the object, a terminal for electrically contacting conductors according to the independent claim 1 is provided. Embodiments are the subject of dependent claims.

In one aspect, a terminal for electrically contacting conductors is provided having an insulating housing and a busbar disposed in the insulating housing. The terminal has one or more terminal points, which in the longitudinal direction of the bus bar in each case an opening in the busbar for receiving and contacting an electrical conductor, a leaf spring for clamping the electrical conductor when it is inserted into the opening, and a plug-in channel are assigned which is arranged in the insulating housing in a housing channel and the busbar upright. The terminal has an adjacent channel which is disposed upright in the housing channel adjacent to the insertion channel and the bus bar. The insertion channel and the adjacent channel are separated from one another in a housing channel section which is distal to the busbar by a partition wall projecting into the housing channel and run together in a busbar section proximal to the busbar above the associated opening in the busbar. In the adjacent channel, an actuating element is received, which is displaceable between a starting position and an actuating position along the adjacent channel. A shift into the actuating position takes place against a biasing force of the leaf spring. Here, a clamping portion of the leaf spring, the breakthrough pivots at least partially releasing, so that the electrical conductor in the opening can be inserted. The actuating element has a proximal and a distal stop with respect to the busbar, which are spaced apart in the longitudinal direction of the actuating element and which limit the displacement movement of the actuating element in the adjacent channel and in this case interact with a respectively assigned channel stop.

It can be provided that the terminal block per housing channel with insertion channel and adjacent channel has exactly one of the electrical conductors in the inserted state clamping leaf spring.

The terminal may have one or more terminal points for a respective conductor, wherein an even or an odd number of terminal points may be provided. With respect to the center of the terminal block, the plurality of terminal points may form a mirrored arrangement, in particular with regard to the position of the leaf spring and the adjacent arrangement of insertion channel and adjacent channel in the horizontal direction. In this case, the terminal end of the respective leaf spring on the two sides of the center of the terminal block respectively towards the center or respectively outwards.

With the housing channel, which is formed with the insertion channel and the adjacent channel, as well as the leaf spring and the associated opening in the bus bar a Federkraftklemmanschluss is provided for a respective electrical conductor in the terminal block.

The proximal and the distal stop can be arranged offset to one another in the longitudinal direction of the busbar on the actuating element. The distal and the proximal stop are offset in the horizontal direction. It can be provided that the two stops are aligned with respect to a vertical line starting from this to the opposite sides.

The proximal and / or the distal stop can be formed on the actuating element with a projection and / or an undercut. The respective stop may have one or more projections and / or one or more undercuts. Both stops can be formed with a projection and with an undercut. Alternatively it can be provided that one of the stops is formed by a projection, whereas the other stop is formed by an undercut.

Assigned channel stops can have a wall-side projection and / or a wall-side undercut on a wall of the housing channel. The channel stops are each assigned to the proximal or the distal stop on the actuating element and interact with these. For one or both stops, one or more associated channel stops may be provided on the wall of the housing channel. Thus, an upper and a lower channel stop can be assigned to the proximal and / or the distal stop, which limits the displacement of the actuating element in an upper and a lower end position. The associated channel stops can be offset from each other in the horizontal direction.

The projection arranged on the actuating element can be arranged during displacement between the starting position and the actuating position in an associated wall-side recess in the housing channel, in which the wall-side undercut is formed.

The actuating element may have a tapered section which is proximal to the busbar and tapers towards the busbar. At an upper end of the tapered portion, the proximal stop may be arranged, for example, at the edge of a curved side surface of the actuating element. The proximal stop of the actuating element may cooperate in this or other embodiments with a channel stop formed on a receptacle in which the leaf spring is mounted.

The proximal, tapered portion may be curved inwardly at least one side. The curvature is a convex curvature. The inwardly curved surface on the tapered portion of the actuating element may be formed in the region of a side surface which is opposite to the leaf spring, at least when the actuating element is displaced against the bias of the leaf spring to the busbar. On the opposite side of the actuator can be formed straight from a curvature straight. For example, an upright, straight side surface is provided. Hereby, a continuous contact or sliding surface may be formed, which may lie flat against the partition wall when the actuating element is displaced into the adjacent channel. The inward curvature at the tapered portion of the actuator may be adjusted in curvature to an outward curvature of an opposite portion of the leaf spring, in particular have a substantially same radius of curvature. In this way, the actuating element in the region of the tapered portion can be adapted to the shape of the opposite portion of the leaf spring and thus be guided around the curvature of the leaf spring.

As viewed from above into the adjacent channel, a cross-sectional area of the adjacent channel may substantially completely overlap with a cross-sectional area of the associated aperture in the bus bar. A projection of the channel cross section of the adjacent channel on the cross-sectional area of the associated aperture is in this case completely within the outer limits of the cross-sectional area of the aperture. For the insertion channel, this may alternatively or additionally be provided in the same way.

In the leaf spring of the clamping portion and a stopper portion which engages in the associated opening may be connected via a rounded spring portion, wherein the rounded spring portion is arranged in a form-fitting manner in an associated receptacle of the insulating housing. In the area of the rounded spring section, the area of the leaf spring which is adapted in terms of its curvature outwards to the inwardly directed curvature of the tapering section of the actuating element can lie. The leaf spring, starting from the rounded spring portion and enclosing this up to the end of the leaf spring in the abutment portion continuously flat against the insulating housing and a directly adjoining this section of the opening surface.

At the breakthrough in the busbar, a downwardly trained around the opening perforated hole and passage can be arranged, wherein a surface of the electrical conductor, when it is inserted into the opening and clamped by the clamping portion of the leaf spring, rests flat on an inner side of the hole penetration. Alternatively, the hole passage, which can also be referred to as a hole collar, be formed interrupted along the peripheral edge of the opening. With the flat concerns on the inside of the hole passage as large a contact surface between the inserted conductor and the metal material of the busbar is made.

An inner surface of a wall portion of the insertion channel can be aligned above the opening with an inner surface of an underlying wall portion of the hole passage in which the electrical conductor comes to rest during clamping. Alternatively, the inner surface of the wall portion of the insertion channel above the aperture may be minimally offset from the inner surface of the underlying wall portion of the hole passage. The various embodiments assist in substantially planar abutment of the inserted conductor with the interior surface of the through-hole and may optionally minimize or eliminate tilting of the inserted conductor end.

The wall portion of the insertion channel can be brought into the immediate vicinity of the top of the busbar or even put on this.

The partition wall separating the plug-in channel and the adjacent channel can terminate at a greater distance above the busbar, so that in the region immediately above the busbar the two channels, which are formed together in the housing channel, converge.

A transverse edge at the distal end of the clamping portion of the leaf spring may be disposed above or below an opposite distal edge of the hole passage when the electrical conductor is inserted and clamped by the leaf spring. In one embodiment, the transverse edge can be arranged in the distal end of the clamping portion of the leaf spring in the vertical direction approximately in the middle of the hole passage when the electrical conductor is inserted and clamped by means of the leaf spring. Alternatively, the transverse edge can be arranged at the distal end of the clamping portion of the leaf spring with respect to the distal edge of the hole passage.

A distal end of the electrical conductor, when inserted into the aperture, may engage an associated recess of the insulating housing located below the busbars, the recess engaging an area below the insertion channel, but not a portion below the adjacent channel. An inner surface of the recess can be aligned with the inner surface of an overlying portion of the hole passage, so that the two inner surfaces form a common investment or bearing surface for the inserted electrical conductor.

Description of exemplary embodiments

In the following, further embodiments will be explained in more detail with reference to figures of a drawing. Hereby show:

1 a schematic representation of a terminal block with a plurality of longitudinally adjacent to a busbar clamping points;

2 a schematic representation of the terminal block 1 , wherein in an nip an electrical conductor is inserted;

3 an enlarged perspective view of a clamping point with inserted conductor;

4 a schematic perspective view of the terminal block 1 ;

5 a schematic perspective view of a terminal with an odd number of terminals; and

6 a schematic perspective view of a terminal with two terminal points.

1 and 2 show schematic representations of a terminal block 1 in which in an insulating housing 2 several nips 3 are formed, in each of which an electrical conductor 4 for contacting with a busbar 5 is pluggable. 2 shows the terminal block 1 with the inserted electrical conductor 4 ,

3 shows an enlarged view of one of the terminal points 3 with the inserted conductor 4 ,

The several terminal points 3 are in the longitudinal direction of the busbar 5 arranged one behind the other. The clamping points 3 each have an associated breakthrough 6 in the power rail 5 , a leaf spring 7 for clamping the electrical conductor 4 and a housing channel 8th on. By doing housing channel 8th are a plug-in channel 9 as well as an adjacent canal 10 educated. The insertion channel 9 and the neighboring canal 10 are parallel and upright in relation to the busbar 5 arranged, which extends in the embodiment shown in the horizontal direction.

In one to the power rail 5 distal housing channel section 11 are the insertion channel 9 and the neighboring canal 10 through a partition 12 separated from each other. In one to the power rail 5 proximal housing channel section 13 run the plug-in channel 9 and the neighboring canal 10 above the busbar 5 together. Through the insertion channel 9 through is the electrical conductor 4 for the breakthrough 6 introduced.

To the nip 3 for plugging in the electrical conductor 4 prepare, becomes an actuator 14 , which in the vertical direction displaced in the adjacent channel 10 is added, against the bias of the leaf spring 7 pressed down, for example with an operating tool such as a screwdriver, so that a clamping portion 15 the leaf spring 7 the assigned breakthrough 6 in the power rail 5 is pivoted downwards releasably.

Is the electrical conductor 4 then according to 3 inserted, so presses a transverse edge 16 at the distal end 17 of the clamping section 15 against the electrical conductor 4 , in turn, on the opposite side on an inner surface 18 a hole passage or collar 19 lies flat. In the embodiment shown, the electrical conductor is located 4 continue on an inner surface 20 a recess 21 at the bottom of the breakthrough 6 and with the cross-sectional area of the hole passage 19 is arranged overlapping around the inserted end of the electrical conductor 4 take.

According to 3 is the leaf spring with a rounded spring section 22 , which between the clamping portion 15 and a stopper portion 23 is arranged in a receptacle 24 of the insulating housing 2 positively received. The stopper section 23 lies on the inner surface 18 of the hole passage 19 on. The recording 24 is up to the power rail 5 formed so that between an inner surface 25 the recording 24 (see. 2 ) and the inner surface 18 of the hole passage 19 a substantially smooth transition is formed.

On the actuator 14 are in relation to the busbar 5 a proximal stop 26 as well as a distal stop 27 arranged. The proximal stop 26 acts with a first sewer stop 28 together, to a displacement of the actuator 14 in the neighboring canal 10 to limit down. Similarly, the distal stop acts 27 on the actuator 14 with another channel strike 29 together, in a depression 30 a canal wall 31 is formed.

The actuator 14 according to 3 a tapered section 32 on, on one side a convex side surface 33 according to 3 the rounded spring section 22 is opposite when the actuator 14 in the in 3 shown position is arranged.

The 4 to 6 show schematic perspective views of other terminal blocks 40 . 50 . 60 , with four, three and two nips 3 are formed. It turns out that an even or an odd number of nips 3 can be provided.

The features disclosed in the foregoing description, the claims and the drawings may be important both individually and in any combination for the realization of the various embodiments.

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

• DE 2825291 C2 [0003, 0004]
• EP 1391965 B1 [0004]

Claims (13)

Terminal block for electrically contacting conductors, comprising - an insulating housing ( 2 ); - a busbar ( 5 ), which in the insulating housing ( 2 ) is arranged; - one or more terminal points ( 3 ), in the longitudinal direction of the busbar ( 5 ) one breakthrough ( 6 ) in the busbar ( 5 ) for receiving and for contacting an electrical conductor ( 4 ), a leaf spring ( 7 ) for clamping the electrical conductor ( 4 ), if this in the breakthrough ( 6 ) is inserted, and a plug-in channel ( 9 ), which in the insulating housing ( 2 ) in a housing channel ( 8th ) and the busbar ( 5 ) is arranged upright; - an adjacent channel ( 10 ) located in the housing channel ( 8th ) adjacent to the insertion channel ( 9 ) and the busbar ( 5 ) is arranged upright, wherein the insertion channel ( 9 ) and the adjacent channel ( 10 ) in one to the busbar ( 5 ) distal housing channel section ( 11 ) through a in the housing channel ( 8th ) projecting partition wall ( 12 ) are separated from each other and in one to the busbar ( 5 ) proximal housing channel section ( 13 ) above the assigned breakthrough ( 6 ) in the busbar ( 5 ) converge; and an actuator ( 14 ), which in the neighboring channel ( 10 ) and between a starting position and an actuating position along the adjacent channel ( 10 ) is displaceable, wherein - a shift in the actuating position against a biasing force of the leaf spring ( 7 ) and in this case a clamping section ( 15 ) of the leaf spring ( 7 ) the break through ( 6 ) is pivoted at least partially releasing, so that the electrical conductor ( 4 ) in the breakthrough ( 6 ) is insertable, and - the actuating element ( 14 ) with respect to the busbar ( 5 ) a proximal and a distal stop ( 26 ) 27 ), which in the longitudinal direction of the actuating element ( 14 ) are spaced and which the displacement movement of the actuating element ( 14 ) in the adjacent channel ( 10 ) and in this case with a respectively assigned channel stop ( 28 ) 29 ) interact. Terminal block according to claim 1, characterized in that the proximal and the distal stop ( 26 . 27 ) in the longitudinal direction of the busbar ( 5 ) on the actuating element ( 14 ) are offset from one another. Terminal block according to claim 1 or 2, characterized in that the proximal and / or the distal stop ( 26 . 27 ) on the actuating element ( 14 ) are formed with a projection and / or an undercut. Terminal block according to at least one of the preceding claims, characterized in that associated channel stops ( 28 . 29 ) on a wall of the housing channel ( 8th ) have a wall-side projection and / or a wall-side undercut. Terminal block according to claims 3 and 4, characterized in that on the actuating element ( 14 ) arranged projection during displacement between the starting position and the actuating position in an associated wall-side depression ( 30 ) in the housing channel ( 8th ) is arranged, in which the wall-side undercut is formed. Terminal block according to at least one of the preceding claims, characterized g ekennzeichnet that the actuating element ( 14 ) one to the busbar ( 5 ) proximal, tapered section ( 32 ), which extends to the busbar ( 5 ) tapers. Terminal block according to claim 6, characterized in that the proximal tapered section (FIG. 32 ) is curved inward on at least one side. Terminal block according to at least one of the preceding claims, characterized g ekennzeichnet that, as seen from above into the adjacent channel 10 a cross-sectional area of the adjacent channel ( 10 ) having a cross-sectional area of the associated aperture ( 6 ) in the busbar ( 5 ) is substantially completely overlapped. Terminal block according to at least one of the preceding claims, characterized in that in the leaf spring ( 7 ) the clamping section ( 15 ) and an abutment section ( 23 ), which in the assigned breakthrough ( 6 ) engages over a rounded spring section ( 22 ), wherein the rounded spring section ( 22 ) in an associated receptacle ( 24 ) of the insulating housing ( 2 ) is arranged. Terminal block according to at least one of the preceding claims, characterized in that at the aperture ( 6 ) in the busbar ( 5 ) one down and around the breakthrough ( 6 ) circumferentially formed hole passage ( 19 ), wherein a surface of the electrical conductor ( 4 ), if this in the breakthrough ( 6 ) and by means of the clamping section ( 15 ) of the leaf spring ( 7 ) is clamped, flat on an inner side of the hole passage ( 19 ) rests. Terminal block according to claim 10, characterized in that an inner surface of a wall portion of the insertion channel ( 9 ) above the breakthrough ( 6 ) with an inner surface of a underlying wall section of the hole passage ( 19 ) in which the electrical conductor ( 4 ) comes to the terminal when clamping. Terminal block according to at least one of the preceding claims, characterized in that a transverse edge ( 16 ) at the distal end ( 17 ) of the clamping section ( 15 ) of the leaf spring ( 7 ) above or below an opposite distal edge of the hole passage ( 19 ) is arranged when the electrical conductor ( 4 ) and by means of the leaf spring ( 7 ) is clamped. Terminal block according to at least one of the preceding claims, characterized g ekennzeichnet that a distal end of the electrical conductor ( 4 ), if this in the breakthrough ( 6 ) is inserted into an associated recess ( 21 ) of the insulating housing ( 2 ), which are below the busbars ( 5 ) is arranged, wherein the recess ( 21 ) an area below the insertion channel ( 9 ) but not an area below the adjacent channel ( 10 ).

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