EP1763109B1 - Holding and contacting clip for assembling for a bus bar and holding such contacting clip arrangement - Google Patents

Description

The invention relates to a contact holding clamp made of electrically conductive sheet material for producing an electrically conductive connection between a flat bus bar and a flat contact of an electrical component, which are connectable by the latter in a plugging direction, wherein the contact holding clip comprises a base portion having an end edge and two side edges ,

Such a contact retaining clip shows US 2 997 685 , The contact retaining clip clamps the bus bar and the flat contact between the base portion and a clamping portion. The busbar runs parallel to the end edge and the plugging direction parallel to the side edges. The width of the contact retaining clip is adapted to the width of the flat contact used.

The DE 32 43 941 C2 describes a contact retaining clip made of an electrically conductive sheet material for producing an electrically conductive connection between an angle bracket, which is connected at one end to an insulating plate and forms part of a circuit and the other end is high and should be connected to a flat contact of a fuse. For this purpose, a contact holding clamp is provided, which is designed as a receiving part for the flat contact and is formed from a strip-shaped part having wing-shaped transverse projections. These form Festsetzarme and include the side edges of the busbar such that they form edge regions facing one of the faces of the strip-shaped part, so that the contact-holding clip is fixed thereto. The busbar is bent at its end edge connecting the two side edges in a first direction. The contact retaining clip has, starting from a base portion which partially applies to the opposite surfaces facing the inflected edge regions, to the bent end of the busbar extending resilient arms. Between the end of the busbar and the two resilient arms of the flat contact of the electrical Component introduced. The plug-in direction for the insertion of the flat contact corresponds to the longitudinal extent of the upstanding part of the busbar and also the extension direction of the two resilient retaining arms. This arrangement requires that the contact retention clip be slipped onto the end of an elongate bus bar. A further disadvantage is that different contact holding clamps are required for each busbar width, since these include the busbar in the transverse direction. Thus, such contact holding clamps are limited to certain widths of flat contacts. In addition, since a high-level arrangement is usually selected for the electrical components to be attached, a connection can only be achieved if there is a busbar section that is upstanding from a flat element, so that the narrow end edge of the support faces upwards.

The invention has for its object to propose a contact retaining clip for mounting to a busbar and a contact holding arrangement comprising the busbar, which is suitable for mounting electrical components with their flat contacts along both the longitudinal extent of a busbar and on protruding sections. Furthermore, the contact retaining clip should also be used for different width flat contacts.

• einen Basisabschnitt, der eine Endkante und zwei Seitenkanten aufweist,
• zwei federnde Festsetzarme, die gleichgerichtet von dem Basisabschnitt ausgehend in einem Biegeabschnitt zurück in Richtung zur Endkante gebogen sind und parallel zu den Seitenkanten ausgerichtet sind und dazu bestimmt sind, die Kontaktklammer an der Stromschiene festzusetzen,
• einen federnden Haltearm, der ebenfalls vom Basisabschnitt ausgehend, zwischen den Festsetzarmen angeordnet ist und gleichgerichtet wie diese verlaufen und von dem Biegeabschnitt zurück in Richtung zur Endkante des Basisabschnittes verläuft und der an seinem freien Ende einen Kontaktabschnitt aufweist, der dazu bestimmt ist, den Flachkontakt in Kontakt zu der nicht vom Basisabschnitt kontaktierten Fläche der Stromschiene zu halten, wobei der Kontaktabschnitt in einer Steckrichtung, die parallel zur Endkante verläuft, mindestens eine erste Anlauffläche für den Flachkontakt oder das Aufstecken auf die Stromschiene aufweist, wobei ferner die Festsetzarme in Richtung zur Endkante kürzer ausgebildet sind als der Haltearm.

This object is achieved according to the invention by a contact holding clamp of electrically conductive sheet material for producing an electrically conductive connection between a flat bus bar and a flat contact of an electrical component, which can be connected by this in a plugging direction

• a base portion having an end edge and two side edges,
• two resilient fixing arms, which are rectilinearly bent from the base portion in a bending section back toward the end edge and are aligned parallel to the side edges and intended to fix the contact clip to the bus bar,
• a resilient holding arm, which is also arranged starting from the base portion, between the Festsetzarmen and rectified as this run and from the bending portion back towards the end edge of the base portion extends and at its free end has a contact portion which is intended to hold the flat contact in contact with the not contacted by the base portion surface of the busbar, wherein the contact portion in a plugging direction which is parallel to the end edge, at least one first contact surface for having the flat contact or plugging on the busbar, further wherein the Festsetzarme are shorter in the direction of the end edge than the support arm.

An advantage of this design is that an assembly, d. H. the insertion of a flat contact, parallel to the bending section can take place, wherein the configuration of the Festsetzarme and the support arm to each other allows this direction of insertion. It is therefore also possible to provide a contact retaining clip in a unified design, which can be mounted in combination with another identically designed contact retaining clip on a busbar, regardless of their width, so that different width flat contacts can be kept in contact with the busbar.

In an embodiment of the invention it is proposed that the holding arm is wider in a direction corresponding to the plugging direction than the fixing arms.

In order to facilitate the insertion of the flat contact, it is provided that the retaining arm has on both sides in the direction of the side edges each have a lug which forms the first contact surface and starting from the connected end of the base portion.

In order to fix the contact holding clamp on the bus bar simply in the intended position, the base portion has at least one projection which projects to the holding arm. With this he intervenes, for example, in a corresponding recess of the busbar. At the same time then formed by the depression in the bus bar projection forms a contact area for the flat contact.

Preferably, the contact retaining clip consists of a spring steel and in particular from one that is not rusting. In addition, it has towards the end edge, a second contact surface, which is provided for the attachment to the busbar.

• eine flache Stromschiene mit
  • mindestens einem Abschnitt, der von einem Grundabschnitt der Stromschiene vorsteht und von zwei beabstandeten Seitenflächen und einer diese verbindenden Endfläche begrenzt ist,
• zwei Kontakthalteklammen gemäß einem der Ansprüche 1 bis 7, von denen jeweils eine von einer der Seitenflächen aufgesteckt ist, so dass sich die beiden Haltearme gegenüberstehen.

The invention further relates to a contact retaining arrangement comprising

• a flat busbar with
  • at least one portion projecting from a base portion of the bus bar and bounded by two spaced side surfaces and an end surface connecting them,
• two Kontakthalteklammen according to one of claims 1 to 7, of which one of each of the side surfaces is plugged, so that the two holding arms face each other.

With this arrangement, it is possible to hold flat contacts of different widths with two contact holding clips, which are of the same design. The width of the flat contacts determines only the width of the busbar end portion.

• eine flache Stromschiene,
  welche durch zwei Seitenflächen entlang ihrer Längserstreckung begrenzt ist und welche mindestens einen quer zur Längserstreckung verlaufenden Schlitz aufweist, und
• mindestens eine Kontakthalteklammer gemäß einem der Ansprüche 1 bis 7,
  welche so auf die Stromschiene in Steckrichtung aufgesteckt ist, dass ihr Biegeabschnitt in dem Schlitz aufgenommen ist.
  Hierdurch ist es möglich, entlang der Längserstreckung einer Stromschiene verschiedene elektrische Bauelemente anzuschließen, wobei die Bauelemente quer zur Schiene orientiert sind und die Steckrichtung entsprechend auch quer zum Verlauf der Stromschiene ausgerichtet ist.

The object is achieved according to the invention by a contact holding arrangement comprising

• a flat busbar,
  which is bounded by two side surfaces along its longitudinal extension and which has at least one transverse to the longitudinal slot extending, and
• at least one contact retaining clip according to one of claims 1 to 7,
  which is plugged onto the busbar in the insertion direction, that its bending portion is received in the slot.
  This makes it possible to connect along the longitudinal extent of a busbar different electrical components, wherein the components are oriented transversely to the rail and the plugging direction is aligned according to transverse to the course of the busbar.

To the assignment of the contact retaining clips and their fixation to a specific To facilitate the position of the busbar, it is provided that the busbar to the at least one projection in the base portion has a matching recess into which engages the at least one projection.

A preferred embodiment of a contact retaining clip and different ways to assign a busbar are shown schematically in the drawing.

Figur 1

eine perspektivische Darstellung der Kontakthalteklammer,

Figur 2

eine Draufsicht zu Figur 1,

Figur 3

die Zuordnung einer Kontakthalteklammer gemäß Figuren 1 und 2 zu einer ersten Ausführungsform einer Stromschiene und einer ersten Ausführungsform eines Flachkontaktes in Draufsicht,

Figur 4

eine Seitenansicht zu Figur 3,

Figur 5

eine weitere Ausführungsform einer Kontakthalteanordnung für eine zweite Ausführungsform von Flachkontakten mit zwei einander gegenüberstehend an einer Stromschiene montierten Kontakthalteklammern in Draufsicht und

Figur 6

eine Seitenansicht einer länglichen Stromschiene mit Schlitzen und an der Stromschiene durch Eingriff in die Schlitze festgelegten Halteklammern gemäß Figuren 1 und 2.

It shows

FIG. 1

a perspective view of the contact retaining clip,

FIG. 2

a plan view too FIG. 1 .

FIG. 3

the assignment of a contact retaining clip according to FIGS. 1 and 2 to a first embodiment of a busbar and a first embodiment of a flat contact in plan view,

FIG. 4

a side view too FIG. 3 .

FIG. 5

a further embodiment of a contact holding assembly for a second embodiment of flat contacts with two oppositely mounted on a busbar contact holding clips in plan view and

FIG. 6

a side view of an elongated busbar with slots and fixed to the busbar by engaging in the slots retaining clips according to FIGS. 1 and 2 ,

First, the FIGS. 1 and 2 described together. A contact retaining clip 1 is shown which can be used in several contact holding arrangements in order to fix flat contacts of different widths.

The contact retaining clip 1 is made of a sheet material having good spring properties. It comprises a substantially flat base portion 2, which has a side edge 3, a side edge 4 parallel thereto and an end edge 5. It forms a first axis 6, which extends between the two side edges 3, 4 and represents the axis of symmetry of the contact retaining clip 1. Further, it forms a second axis 7 which is perpendicular to the first axis 6.

From the end edge 5 remote from the end of the base portion 2, two Festsetzarme 9 are bent over a bending section 8 in such a way that they extend in the direction of the end edge 5, but clearly before the same end. They close in the direction of the second axis 7 to the side edges 3 and 4, respectively, and extend substantially parallel to the first axis 6. They extend starting from the base portion 2, first from this and then remotely in an arc to this approximately and to it then again removed, so that a defined Festsetzabschnitt 10 is formed, which is intended to come into contact with a busbar, as will be explained in more detail below.

Between the two Festsetzarmen 9 is a holding arm 11. The holding arm 11 is also like the two Festsetzarme 9 of the end edge 5 remote end of the base section 2 from. It runs in the bending section 8, first rectified as the two Festsetzarme 9 from the base section 2 remotely and in an arc back toward the end edge 5. It forms in its base portion 2 most approximated portion a contact portion 13 and then to the free end 12 toward an end portion, which may optionally be removed from the base section 2 again. In the direction of the second axis 7, the support arm 11 has a greater extent than the two Festsetzarme 9. In the direction of the first axis 6 of the support arm 11 is formed longer than the two Festsetzarme 9. At the end portion of the support arm 11 close from the axis of symmetry forming on the first axis 6 away two wing-like projections 16, the rising, ie, the base portion 2 are removed, and the base portion 2 facing start-up surfaces 14 form. The base portion 2 facing surface of the end portion of the support arm 11, which ends at the free end 12, forms a second contact surface 15. At the base portion of the second There is a projecting in the direction of the support arm 11 projection 17 which is elongated in the direction of the second axis 7 and facing the contact portion 13 of the support arm 11.

The Figures 3 and 4 show a first contact holding arrangement, which holds a single contact retaining clip 1 for fixing a flat contact 25 of an electrical component 26 in association with a first embodiment of a bus bar 18.

The bus bar 18 includes, for example, a generally longitudinally extending base portion 18a and one or more portions 25b perpendicularly projecting at intervals thereof, each including an end surface 19 and parallel side surfaces 20. The side surfaces 20 terminate in the end surface 19 and are connected by them. The side surfaces 20 are practically the edges of the bus bar 18, d. H. they represent the narrow sides of their section 18b, since the busbar 18 is punched out of a sheet material, for example.

The two surfaces which extend between the parallel side surfaces 20 form a contact surface 21 on the one side and a surface 22 facing away therefrom. Starting from the surface 22, two depressions are impressed into the section 18b at a distance from one another, so that in the region of Contact surface 21 two mutually parallel and parallel to the side surfaces 20 contact projections 27 arise.

The contact retaining clip 1 is, starting from the left side in the drawing surface 20, pushed onto the portion 18 b of the bus bar 18, so that the base portion 2, which faces the surface 22, with its projection 17 in the recess formed by a contact projection 27 starting from the surface 22 engages and thus positioned with respect to the portion 18 b of the bus bar 18. When pushing the Festsetzarme spring 9 and are based against the contact surface 21, which faces away from the surface 22, and put the contact retaining clip 1 at the portion 18 b of the bus bar 18 fixed. The located between the two Festsetzarmen 9 holding arm 11 also covers it However, the contact surface 21, extending from the located in the drawing right side surface 20 with a much larger dimension toward the left side surface 20 of the portion 18 b, the bus bar 18 as the two Festsetzarme 9. One of the two lugs 16 is in the direction to the end surface 19 of section 18b of the bus bar. Because he, like from the FIG. 1 can be seen, inclined, starting from the gap, which is given between the portion 18 b of the bus bar 18 and the projection 16, a flat contact 25 between the support arm 11 and the portion 18 b of the bus bar 18 are introduced, wherein the flat contact 25 against the two contact projections 27 applies and is held clamped by the when inserted in the insertion direction S remotely biased by the portion 18b of the contact rail 18a holding arm 11.

Since the Festsetzarme 9 are formed shorter than the support arm 11, enough space for receiving a flat contact 25 is given in a predetermined width. Due to the symmetrical design of the contact retaining clip 1 with respect to the FIGS. 1 and 2 apparent contact axis, the contact holding clip could also, starting from the right in the figures 3 and 4 side surface 20 of the portion 18 b of the bus bar 18, determined thereon.

The above-described possibility leads to the fact that a contact holding arrangement can be selected, as in the Figures 5 and 6 is shown, wherein from the portion 118 b of a bus bar 118 starting, two parallel side surfaces 120 each a contact holding bracket 1 is assigned, so that there is a possibility, with two equally designed contact holding clamps a flat contact 125 in abutment with the contact projections 127 hold, as shown by Comparison of the two drawing figures 3 and 5 recognizable, significantly wider. The advantage that results from this is that flat contacts of different widths can be held with two identically formed contact holding clamps 1, ie contact holding clamps not adapted to the respective contact dimensions do not have to be provided. Incidentally, regarding the design of the bus bar 118 to the description of the Figures 3 and 4 referenced, but for the same sections, busbar and the flat contact at FIG. 5 and 6 position mark their position designation by the numerical value 100 compared to the corresponding sections in the Figures 3 and 4 is increased. To the description of which is to the description of the Figures 3 and 4 directed. In FIG. 6 the flat contact 125 of an electrical component is not shown. The structure of the contact retaining clips 1 corresponds to that in connection with the FIGS. 1 to 4 described.

In the arrangements according to the Figures 3 and 5 An assembly of the electrical components 26 and thus the associated flat contacts 25 and 125 in a plug-in direction S, which runs parallel to the side surfaces 20 and 120 in the plane of the drawing.

The FIG. 6 additionally shows a contact holding arrangement of a further embodiment, in which also contact holding clamps 1, as shown in the FIGS. 1 and 2 are shown and described in connection with these, are present. However, the bus bar 218, of which only one longitudinal section is shown, is different from that according to the embodiment according to FIGS FIGS. 3 to 5 shaped. The busbar 218 is shown as an elongated rail having the longitudinal axis 24, to which the two side surfaces 220 are parallel. It has, facing the viewer of the drawing, the contact surface 221, which extends between the two side surfaces 220. The busbar 218 is also made of a sheet material o. The like. Flat material. In the busbar 218, one or more slots 23 may be provided, which extend transversely to the longitudinal axis 24 of a side surface 220 starting. These slots 23 are used to mount one or two contact retaining clips 1 to the busbar 218, wherein each contact retaining clip 1 is inserted in the insertion direction S with its bending section 8 in the associated slot 23 and thereby starting from the slots 23 to the left or right parallel oriented to the longitudinal axis 24. The Festsetzarme 9 and the support arm 11 are facing the contact surface 221 or contact them. Between the contact surface 221 and this possibly associated projections according to the embodiment of the FIGS. 3 to 5 and the holding arm 11, a flat contact 25 of an electrical component 26 is fixed. The insertion in the insertion direction S between the busbar 218 and the holding arm 11 takes place as in connection with the FIGS. 3 to 5 described.

The plug-in direction S corresponds in practice to the alignment of the second axis 7 and the parallel to this bending section 8 of the contact-holding clip. 1

As a result, a space-saving arrangement is created.

In all embodiments, the busbars are made of an electrically conductive material. It is advantageous that a direct contact between the flat contacts of the electrical components and the associated busbar is made.

LIST OF REFERENCE NUMBERS

1

Contact retaining clip

2

base section

3

side edge

4

side edge

5

end edge

6

first axis

7

second axis

8th

bending section

9

Festsetzarm

10

Retaining portion

11

holding arm

12

free end

13

Contact section

14

first contact surface

15

second contact surface

17

head Start

18, 118, 218

conductor rail

18a, 118a

base portion

18b, 118b

section

19,119

end face

20, 120, 22

side surface

21, 121, 221

contact area

22, 122

area

23

slot

24

longitudinal axis

25.125

flat contact

26

electrical component

27

contact projection

S

plug-in direction

Claims (10)

1. Contact holding clip (1) made from an electrically conductive sheet material for producing an electrically conductive connection between a flat bus bar (18, 118, 218) and a flat contact (25, 125) of an electrical component (26), which is connectable by means of this in an insertion direction (S), comprising

   - a base portion (2), which has an end edge (5) and two side edges (4),

   characterised by

   - two elastic retaining arms (9), which are bent in the same direction starting from the base portion (2) in a bending portion (8) back in the direction towards the end edge (5) and are aligned parallel to the side edges (4) and serve to retain the contact holding clip (1) on the bus bar (18, 118, 218), and

   - an elastic holding arm (11), which also starting from the base portion (2), is arranged between the retaining arms (9) and extends in the same direction as these and extends from the bending portion (8) back in the direction towards the end edge (5) of the base portion (2) and which has at its free end (12) a contact portion (13), which serves to hold the flat contact (25, 125) in contact to the face (21, 121) of the bus bar (18, 118, 218) which is not contacted by the base portion (2), wherein the contact portion (13) has in a connection direction (S), extending parallel to the end edge (5), at least one first abutment face (14) for the flat contact (25, 125) or for attaching onto the bus bar (18, 118, 218), wherein further the retaining arms (9) in the direction towards the end edge (5) are formed shorter than the holding arm (11).
2. Contact holding clip according to claim 1,
   characterised in
   that the holding arm (11) in a direction, which corresponds to the connection direction (S), is formed wider than the retaining arms (9).
3. Contact holding clip according to claim 1,
   characterised in
   that the holding arm (11) has at both sides in the direction towards the side edges (3) respectively one lug (16), which forms the first abutment face (14) and extends with an increasing distance, starting from the connected end in the direction towards the side edge, from the base portion (2).
4. Contact holding clip according to claim 1,
   characterised in
   that the base portion (2) has at least one projection (17), which projects towards the holding arm (11).
5. Contact holding clip according to claim 1,
   characterised in
   that it is made from a spring steel.
6. Contact holding clip according to claim 4,
   characterised in
   that the spring steel is rust-resistant.
7. Contact holding clip according to claim 1,
   characterised in
   that towards the end edge (5), a second abutment face (15) is provided for the attachment on the bus bar (18, 118, 218).
8. Contact holding arrangement comprising

   - a flat bus bar (18, 118) with

   - at least one portion (18b, 118b), which projects from a main portion (18a, 118a) of the bus bar (18, 118) and is limited by two distanced side faces (20, 120) and an end face (19, 119) connecting these,

   - two contact holding clips (1) according to one of claims 1 to 7, of which, respectively, one is attached on one of the side faces (20, 120), so that the two holding arms (11) are opposed to each other.
9. Contact holding arrangement comprising
   a flat bus bar (218),
   which is limited by two side faces (220) along its longitudinal extension and which has at least one slot (23), extending transversally to the longitudinal extension, and
   at least one contact holding clip (1) according to one of claims 1 to 7, which is attached on the bus bar (218) in the connection direction (S) such, that its bending portion (8) is accommodated in the slot (23).
10. Contact holding arrangement according to one of claims 6 or 7,
    characterised in
    that the bus bar (18, 118, 218) has additionally to the at least one projection (17) in the base portion (2) a fitting indentation, into which the at least one projection (17) engages.

Images