EP3687002B1 - Spring clamp and cable connection clamp - Google Patents
Spring clamp and cable connection clamp Download PDFInfo
- Publication number
- EP3687002B1 EP3687002B1 EP20152197.8A EP20152197A EP3687002B1 EP 3687002 B1 EP3687002 B1 EP 3687002B1 EP 20152197 A EP20152197 A EP 20152197A EP 3687002 B1 EP3687002 B1 EP 3687002B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- leg
- clamping leg
- spring
- bead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000011324 bead Substances 0.000 claims description 70
- 238000005452 bending Methods 0.000 claims description 56
- 239000004020 conductor Substances 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 18
- 238000004049 embossing Methods 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000007373 indentation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
- H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/52—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw which is spring loaded
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/515—Terminal blocks providing connections to wires or cables
Definitions
- the invention is based on a clamping spring according to the preamble of claim 1.
- the invention also relates to a conductor connection terminal with a clamping spring.
- Conductor connection terminals and their spring clips are, for example, from the WO 2016/102322 A1 known. Such conductor connection terminals and their spring clips differ from electrical plug connectors, for example, in the significantly higher clamping force of the clamping spring, since, unlike a plug connector, a conductor connection terminal is not designed for frequent mating and detaching processes like electrical plug connectors.
- the object of the invention is to find a solution that is inexpensive in terms of production and cost for the field of conductor connection technology by means of spring force clamping in order to increase the conductor holding force of such a conductor connection terminal and its clamping spring.
- clamping spring according to claim 1.
- the clamping leg has at least one bead embossed in the material of the clamping leg, which does not extend to the free end of the clamping leg, but ends in front of it.
- the bead can be formed, for example, as an embossing or as any other type of recess in the clamping leg.
- the bead increases the spring stiffness of the clamping leg, in particular in a possibly existing bending area of the clamping leg. In this way, the conductor holding force of the clamping spring and a conductor connecting terminal formed therewith can be easily and can be increased inexpensively without increasing their size or increasing the weight and material requirements for the clamping spring.
- the conductor holding force is the force that is effective against the electrical conductor being pulled out of the terminal point.
- the clamping leg can have a clamping edge for clamping the electrical conductor.
- the mechanical fixing and electrical contacting of the electrical conductor can be further improved and the conductor holding force can also be increased.
- the clamping leg has a first area adjoining the spring arch and a second area ending with the free end of the clamping leg, the first area over a bending area of the clamping leg in which the clamping leg has a curved shape having, is connected to the second region.
- the clamping spring can for example be designed such that the first area of the clamping leg adjoining the spring arch extends at least substantially parallel to the area of the contact leg adjoining the spring arch, at least when the clamping spring is relaxed or the clamping spring is deflected. Due to the bending area, the second area of the clamping leg can extend further bent away from the contact leg, i.e. the second area of the clamping leg forms a larger angle to the contact leg than the first area.
- the clamping leg has the at least one bead embossed in the material of the clamping leg, at least in the bending area. It was found that in the case of a clamping spring in which the clamping leg has at least one bending area, an increase in the spring stiffness in this critical area, ie the bending area, can be increased by a modification that is relatively easy to implement from a manufacturing point of view, namely an embossed bead, thereby increasing the section modulus.
- the bead extends from the bending area into the first area and / or into the second area of the clamping leg.
- the bead can for example be arranged symmetrically with respect to the first and the second area, i.e. it can extend from the bending area into the first and the second area of the same length. It is advantageous if the bead does not extend to the spring arch, but ends in front of it. Alternatively, the bead can also extend into the further spring arch.
- the clamping leg has a further bending area between the first and the second area, in which the clamping leg has a curved shape.
- a clamping spring which is even better adapted to the respective requirements of the conductor connection terminal with regard to the shape can be realized.
- the bending area can be bent in the same bending direction (same bending direction) as the further bending area, or in the opposite bending direction.
- the bead can in particular extend from the bending area to the further bending area.
- the bending area can also be viewed as a common bending area together with the further bending area, so that the bead embossed in the material of the clamping leg can be located in this common bending area, that is, the bead can be arranged both in the bending area and in the further bending area.
- the bead does not extend into the further bending area. Accordingly, the bead is comparatively short so that it ends before the wider bending area. Alternatively, the bead can also extend into the wider bending area.
- the bead has a curved contour following the curved course of the clamping leg in the bending area.
- the bead thus follows the contour of the geometry of the clamping spring at least in the area of the clamping leg in which the bead is arranged.
- the bead thus has a surface that runs at least approximately parallel to the curved shape of the clamping leg in the bending area.
- the bead bridges the bending area in a straight line. This allows a particularly simple production of the bead.
- an angle formed by the bending area between the first and the second area of the clamping leg is at least 10 degrees or at least 15 degrees.
- the angle can also assume larger values, for example at least 30 degrees or at least 40 degrees. The angle is thus formed between the second section of the clamping leg and an extension of the first area of the clamping leg.
- the material of the clamping leg in the area of the bead is deformed into an indentation on an embossed side of the clamping leg and into a bulge on the side opposite the embossed side. Accordingly, the material of the clamping leg is pressed in in the area of the bead on the embossed side and protrudes slightly on the opposite side.
- the indentation thus forms a depression on the embossing side of the clamping leg, for example in the form of a concave indentation.
- the bulge thus forms a protruding elevation on the side of the clamping leg opposite the embossing side, for example in the form of a convex bulge.
- the convex side of the bending area forms the embossing side.
- the embossing side can in particular be the side of the clamping leg which is opposite the contact leg. In this way, the increase in the spring stiffness of the clamping leg can be further optimized.
- the height of the bulge is less than the material thickness of the clamping leg in the bending area. Accordingly, the deformation of the material of the clamping leg by the bead is comparatively small, so that undesired material weakening of the clamping leg due to excessive deformation levels can be avoided.
- the length of the clamping leg extends from the spring bow to the free end.
- the clamping leg is formed from a spring-hard sheet metal material, the material thickness of which also forms the thickness of the clamping leg (thickness dimension).
- the width of the clamping leg is the dimension that extends orthogonally to the thickness dimension and length dimension of the clamping leg. The height of the bulge is measured in the direction of the thickness dimension of the clamping leg, starting from the adjacent surface area of the clamping leg that is not deformed by the bead on the side opposite the embossing side.
- the bead does not extend over the entire width of the clamping leg.
- the bead can be formed within the width of the clamping leg so that it does not extend as far as the left and right lateral edges in the direction of the width dimension of the clamping leg.
- the length of the bead, measured in the longitudinal direction of the clamping leg can for example be one to five times as large as the width of the bead.
- the clamping leg has at least one taper, by means of which the width of the clamping leg is reduced from the spring bow in the direction of the free end of the clamping leg, the bead being arranged in the area of the clamping leg which has the taper .
- an area of the clamping leg that is particularly critical with regard to the spring stiffness can be reinforced by the bead.
- the taper can be designed as a continuous taper, for example with a linear or non-linear transition from a wide area of the clamping leg to a narrower area of the clamping leg. As explained, the narrower area of the clamping leg is arranged closer to the free end of the clamping leg than the wider area of the clamping leg.
- the taper can also be designed as a step-like reduction in width. This has the particular advantage that an actuating element for actuating the clamping spring, e.g. an actuating lever, an actuating lever or some other tool, can act on the at least one step formed on the side of the clamping leg in this way. The step-like shoulder formed in this way can thus be used as an actuating tab for the clamping spring.
- the taper can be present on one or both sides of the clamping leg. Accordingly, the step-like reduction in width can also be present on one side or on both sides of the clamping leg. By arranging the step-like reduction in width on both sides, in particular a two-sided, symmetrical application of force to the clamping leg can be applied to open the clamping point.
- the bead has its greatest length dimension in the direction of the longitudinal extension of the clamping leg.
- the main direction of extent of the bead thus corresponds to Direction of the longitudinal extension of the clamping leg.
- a conductor connection terminal for connecting an electrical conductor by means of spring force clamping having at least one clamping spring, a busbar and an insulating material housing which at least predominantly surrounds the clamping spring and the busbar, the clamping spring being designed as a clamping spring of the type explained above .
- the conductor connection terminal has a pivotable actuating lever for manual actuation of the clamping leg of the clamping spring.
- the actuating lever is used to open and / or close a clamping point formed between the clamping leg and the busbar for clamping the electrical conductor.
- the clamping point formed between the clamping leg and the busbar can thus be opened or closed at the discretion of the user. This allows simple and ergonomic operation of the conductor connection terminal. No additional tools are required to operate the clamping leg.
- the actuating lever can have a left and a right side wall.
- a conductor receiving space for receiving the electrical conductor clamped at the clamping point can be arranged between the left and the right side cheek. This enables the implementation of a particularly compact conductor connection terminal, since the installation space that is partly used by the actuating lever can also be used for the arrangement of the electrical conductor.
- the electrical conductor can thus be inserted or pushed through between the left and right side panels of the actuating lever in order to be clamped in the conductor connection terminal.
- the actuating lever can have at least one actuating element that acts mechanically on the clamping limb to actuate the clamping limb, for example an actuating contour.
- the actuating element then acts on an actuating tab of the clamping leg.
- the actuating tab of the clamping leg can be arranged in the wider area of the clamping leg, in particular in the case of a tapering clamping leg.
- the indefinite term “a” is not to be understood as a numerical word. If, for example, a component is mentioned, this is to be interpreted in the sense of "at least one component”. As far as angles are given in degrees, these refer to a circle of 360 degrees (360 °).
- the clamping spring 4 has a contact leg 40, a spring bow 42 adjoining the contact leg 40 and a clamping leg 43 adjoining the spring bow 42.
- the contact leg 40 is used to fix the clamping spring 4 in the conductor connection terminal 1, e.g. on a busbar 3, an insulating material housing 2 or another component of the conductor connection terminal 1 that is suitable for fastening the clamping spring 4.
- the contact leg 40 has a curved fixing section 437 at its free end. Via the fixing section 437, the contact leg 40 can be suspended, for example, in a cutout in a busbar 3.
- the contact leg 40 can be designed in such a way that it tapers from the spring bow 42 towards its free end, for example tapers once or several times in steps. In the exemplary embodiment, it is shown that the contact leg 40 becomes narrower in the transition to a section 41.
- the fixing section 437 can be made even narrower than the section 41.
- the clamping leg 43 has a first area 431 which adjoins the spring bow 43.
- the clamping leg 43 also has a second region 432 which ends with the free end of the clamping leg 43.
- a clamping edge 436 can be present at the free end of the clamping leg 43.
- the clamping leg 43 merges from the first area 431 via one or more bending areas 433, 434 into the second area 432. Two bending areas 433, 434 are shown by way of example.
- the clamping leg 43 has an intermediate area 435 between the bending areas 433, 434.
- the clamping leg 43 can, as shown, also taper towards the free end, i.e. the width of the clamping leg 43 decreases from the spring bow 42 towards the free end.
- the width of the clamping leg can be reduced, for example, from dimension B1 to B2.
- the clamping leg 43 can have a taper 438, 439, through which the reduction in width takes place continuously or, as shown in the exemplary embodiment, in steps. It is shown by way of example that a taper 438, 439 is present on both sides of the clamping leg 43, i.e. on the left and right of the narrower second region 432.
- the wider material areas of the clamping leg adjoining the taper 438, 439 can be used, for example, as actuating tabs for actuating the clamping leg 43 by an actuating lever 5, an actuating lever or an actuating tool.
- the clamping leg 43 has, at least in the bending area 433, a bead 7 embossed into the material of the clamping leg 43.
- the bead 7 serves to increase the spring stiffness of the clamping leg 43.
- the bead 7 extends from the bending area 433 a little into the second area 432.
- the bead 7 can extend a little from the bending area 433 into the first area 431, or at least into the intermediate area 435.
- the bead 7 can end before the further bending area 434.
- the width B3 of the bead 7 is smaller than the width of the clamping leg 43 in the area having the bead 7, i.e. smaller than the dimension B2.
- the length L of the bead 7 can advantageously be greater than the width B3 of the bead 7, e.g. one to five times as long as the width B3.
- the height H of the bead 7 can advantageously be smaller than the material thickness D of the clamping leg 43, in particular the material thickness of the clamping leg 43 in the bending area 433.
- the Figure 5 shows the installation of the previously described clamping spring 4 in a conductor connection terminal 1.
- the conductor connection terminal 1 has an insulating material housing 2 on.
- the clamping spring 4 and a busbar 3 are arranged in the insulating material housing 2.
- the busbar 3 can be angled, for example, so that the clamping spring 4 can be suspended with its contact leg 40 or the fixing element 437 in a recess in the busbar 3.
- the clamping leg 43 is pretensioned with respect to the busbar 3, so that a clamping point 30 for clamping the electrical conductor is formed between the clamping edge 436 and the busbar 3.
- the electrical conductor can be inserted into the insulating material housing 2 through a conductor insertion opening 20 and guided to the terminal point 30.
- the conductor connection terminal 1 has an actuation lever 5 which can be actuated manually in a pivoting movement by a user on a manual actuation area 50.
- an actuating element 56 of the actuating lever 5 can be moved, which presses against the clamping leg 43 in the area of the respective taper 438, 439 and thereby deflects the clamping leg 43 towards the contact leg 40.
- the clamping edge 436 is thereby moved away from the busbar 3, so that the clamping point 30 is opened.
- FIGS. 1 to 5 show an embodiment of the clamping spring 4 in which the bead 7 is designed as a bead following the contour of the clamping spring 4. Since the bead 7 extends beyond the bending area 433 on both sides, it is accordingly also curved in a side view.
- the Figures 6 to 9 show an embodiment of the clamping spring 4, except for the shape of the bead 7 of the embodiment of FIG Figures 1 to 5 is equivalent to.
- Both Figures 6 to 10 If the bead 7 is not designed to follow the profile of the clamping spring, but extends in a straight line over the bending area 433. It is advantageous if the bead 7 is arranged symmetrically to the bending area 433, that is, the bead 7 extends from the bending area 433 approximately equally in both directions into the adjoining areas of the clamping leg 43.
- the Figure 9 also shows the determination of the angle ⁇ formed by the bending region 433 between the first and the second section 431, 432 of the clamping leg 43.
- the angle can in particular be at least 10 degrees or at least 15 degrees.
- the Figure 10 shows the installation of the previously described clamping spring 4 in a conductor connection terminal 1, which is otherwise the embodiment of Figure 5 is equivalent to.
- Figure 11 shows a perspective view of the actuating lever 5 from the underside. From this, the basically U-shaped configuration with two spaced apart side wall sections 52, 53 can be seen, which are connected to one another at their free end on a side edge with the manual actuation area 50, which forms a transverse web. It becomes clear that the side wall sections 52, 53 taper from the pivot bearing-side end regions 60, 64 towards the free end. It can be seen that an actuation bead 51 is present at the free end of the manual actuation area 50.
- a conductor receiving space 54 for receiving the electrical conductor to be clamped is provided between the side wall sections 52, 53.
- part-circular actuating disks 57, 58 with a V-shaped incision 62, spaced apart from the side wall sections 52, 53 with a guide slot 61, 65, are arranged.
- an actuating section 56 is formed in each case, which serves to apply a spring actuating force to the associated clamping leg 43.
- the actuating sections 56, as well as the manual operating area 50, on which a lever pivot force is exerted lie on the same side relative to the axis of rotation 63.
- the spring actuation forces exerted via the actuation sections 56 act on the same side relative to the axis of rotation 63 as the lever pivot force applied to the manual actuation area 50 for pivoting.
- actuating disks 57, 58 have outer end faces 59 which are curved in the shape of a partial circle and with which the actuating lever 5 is mounted in the housing part 1 so as to be pivotable about a virtual axis of rotation 63.
- the axis of rotation 63 extends through the center of a pitch circle formed by the outer end face 59.
- a latching lug 55 protrudes towards the conductor receiving space 54.
- the latching lug 55 is used to latch the actuating lever 5 to the insulating housing 2 in the closed position.
- Figure 12 shows a side sectional view through the actuating lever 5 from FIG. It is again clear here that the side wall sections 52, 53 are connected by the manual actuation area 50 on the upper side of the actuation lever 5.
- the manual actuation area 50 extends over only part of the length of the side wall sections 52, 53 and preferably takes up more than half the length of the side wall sections 52, 53.
Description
Die Erfindung geht aus von einer Klemmfeder gemäß dem Oberbegriff des Anspruchs 1. Die Erfindung betrifft außerdem eine Leiteranschlussklemme mit einer Klemmfeder.The invention is based on a clamping spring according to the preamble of
Leiteranschlussklemmen und deren Klemmfedern sind beispielsweise aus der
Aus der
Aufgabe der Erfindung ist es, für den Bereich der Leiteranschlusstechnik mittels Federkraftklemmung eine herstellungs- und kostenmäßig günstige Lösung zu finden, um die Leiterhaltekraft einer solchen Leiteranschlussklemme und deren Klemmfeder zu steigern.The object of the invention is to find a solution that is inexpensive in terms of production and cost for the field of conductor connection technology by means of spring force clamping in order to increase the conductor holding force of such a conductor connection terminal and its clamping spring.
Diese Aufgabe wird mit einer Klemmfeder gemäß Anspruch 1 gelöst. Dies beinhaltet, dass der Klemmschenkel wenigstens eine in das Material des Klemmschenkels eingeprägte Sicke aufweist, die sich nicht bis zum freien Ende des Klemmschenkels erstreckt, sondern davor endet.This object is achieved with a clamping spring according to
Die Sicke kann z.B. als Prägung oder als jede andere Art von Vertiefung im Klemmschenkel ausgebildet sein. Durch die Sicke ist die Federsteifigkeit des Klemmschenkels, insbesondere in einem ggf. vorhandenen Biegebereich des Klemmschenkels, erhöht. Auf diese Weise kann die Leiterhaltekraft der Klemmfeder und einer damit ausgebildeten Leiteranschlussklemme auf einfache und kostengünstige Weise gesteigert werden, ohne dabei deren Baugröße zu erhöhen oder das Gewicht und den Materialbedarf für die Klemmfeder zu vergrößern. Die Leiterhaltekraft ist dabei die Kraft, die gegenüber einem Herausziehen des elektrischen Leiters aus der Klemmstelle wirksam ist.The bead can be formed, for example, as an embossing or as any other type of recess in the clamping leg. The bead increases the spring stiffness of the clamping leg, in particular in a possibly existing bending area of the clamping leg. In this way, the conductor holding force of the clamping spring and a conductor connecting terminal formed therewith can be easily and can be increased inexpensively without increasing their size or increasing the weight and material requirements for the clamping spring. The conductor holding force is the force that is effective against the electrical conductor being pulled out of the terminal point.
Der Klemmschenkel kann an seinem freien Ende eine Klemmkante zum Festklemmen des elektrischen Leiters aufweisen. Hierdurch kann die mechanische Fixierung und elektrische Kontaktierung des elektrischen Leiters weiter verbessert werden und zusätzlich die Leiterhaltekraft erhöht werden.At its free end, the clamping leg can have a clamping edge for clamping the electrical conductor. As a result, the mechanical fixing and electrical contacting of the electrical conductor can be further improved and the conductor holding force can also be increased.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Klemmschenkel einen sich an den Federbogen anschließenden ersten Bereich und einen mit dem freien Ende des Klemmschenkels endenden zweiten Bereich aufweist, wobei der erste Bereich über einen Biegebereich des Klemmschenkels, in dem der Klemmschenkel eine gebogene Form aufweist, mit dem zweiten Bereich verbunden ist. Dies ermöglicht eine besonders kompakte Bauweise einer mit der Klemmfeder bestückten Leiteranschlussklemme.According to an advantageous embodiment of the invention it is provided that the clamping leg has a first area adjoining the spring arch and a second area ending with the free end of the clamping leg, the first area over a bending area of the clamping leg in which the clamping leg has a curved shape having, is connected to the second region. This enables a particularly compact design of a conductor connection terminal equipped with the clamping spring.
Die Klemmfeder kann beispielsweise derart ausgebildet sein, dass der sich an den Federbogen anschließende erste Bereich des Klemmschenkels sich zumindest im Wesentlichen parallel zu dem sich an den Federbogen anschließenden Bereich des Anlageschenkels erstreckt, zumindest bei entspannter Klemmfeder oder ausgelenkter Klemmfeder. Durch den Biegebereich kann der zweite Bereich des Klemmschenkels weiter fortgebogen vom Anlageschenkel verlaufen, d.h. der zweite Bereich des Klemmschenkels bildet einen größeren Winkel zum Anlageschenkel als der erste Bereich.The clamping spring can for example be designed such that the first area of the clamping leg adjoining the spring arch extends at least substantially parallel to the area of the contact leg adjoining the spring arch, at least when the clamping spring is relaxed or the clamping spring is deflected. Due to the bending area, the second area of the clamping leg can extend further bent away from the contact leg, i.e. the second area of the clamping leg forms a larger angle to the contact leg than the first area.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Klemmschenkel zumindest im Biegebereich die wenigstens eine in das Material des Klemmschenkels eingeprägte Sicke aufweist. Es wurde festgestellt, dass bei einer Klemmfeder, bei der der Klemmschenkel wenigstens einen Biegebereich aufweist, eine Erhöhung der Federsteifigkeit in diesem kritischen Bereich, d.h. dem Biegebereich, durch eine fertigungstechnisch relativ einfach zu realisierende Modifikation, nämlich eine eingeprägte Sicke, vergrößert werden kann und hierdurch das Widerstandsmoment erhöht wird.According to an advantageous embodiment of the invention it is provided that the clamping leg has the at least one bead embossed in the material of the clamping leg, at least in the bending area. It was found that in the case of a clamping spring in which the clamping leg has at least one bending area, an increase in the spring stiffness in this critical area, ie the bending area, can be increased by a modification that is relatively easy to implement from a manufacturing point of view, namely an embossed bead, thereby increasing the section modulus.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass sich die Sicke vom Biegebereich in den ersten Bereich und/oder in den zweiten Bereich des Klemmschenkels hineinerstreckt. Auf diese Weise wird der Verstärkungseffekt der Federsteifigkeit des Klemmschenkels (weiter) Platz- und Fertigungstechnisch optimiert. Die Sicke kann beispielsweise symmetrisch bezüglich des ersten und des zweiten Bereiches angeordnet sein, d.h. sie kann sich gleichlang vom Biegebereich in den ersten und den zweiten Bereich hineinerstrecken. Es ist dabei vorteilhaft, wenn sich die Sicke nicht bis zum Federbogen hin erstreckt, sondern davor endet. Alternativ kann die Sicke sich auch in den weiteren Federbogen erstrecken.According to an advantageous embodiment of the invention, it is provided that the bead extends from the bending area into the first area and / or into the second area of the clamping leg. In this way, the reinforcement effect of the spring stiffness of the clamping leg is (further) optimized in terms of space and production technology. The bead can for example be arranged symmetrically with respect to the first and the second area, i.e. it can extend from the bending area into the first and the second area of the same length. It is advantageous if the bead does not extend to the spring arch, but ends in front of it. Alternatively, the bead can also extend into the further spring arch.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Klemmschenkel zwischen dem ersten und dem zweiten Bereich einen weiteren Biegebereich aufweist, in dem der Klemmschenkel eine gebogene Form aufweist. Hierdurch kann eine noch besser an die jeweiligen Erfordernisse der Leiteranschlussklemme hinsichtlich der Formgebung angepasste Klemmfeder realisiert werden.According to an advantageous embodiment of the invention, it is provided that the clamping leg has a further bending area between the first and the second area, in which the clamping leg has a curved shape. In this way, a clamping spring which is even better adapted to the respective requirements of the conductor connection terminal with regard to the shape can be realized.
Der Biegebereich kann im gleichen Biegesinn (gleiche Biegerichtung) gebogen sein wie der weitere Biegebereich, oder in entgegengesetztem Biegesinn. Die Sicke kann sich insbesondere vom Biegebereich bis zum weiteren Biegebereich erstrecken.The bending area can be bent in the same bending direction (same bending direction) as the further bending area, or in the opposite bending direction. The bead can in particular extend from the bending area to the further bending area.
Der Biegebereich kann zusammen mit dem weiteren Biegebereich auch als ein gemeinsamer Biegebereich betrachtet werden, sodass die in das Material des Klemmschenkels eingeprägte Sicke sich in diesem gemeinsamen Biegebereich befinden kann, d.h., dass die Sicke sowohl im Biegebereich als auch im weiteren Biegebereich angeordnet sein kann.The bending area can also be viewed as a common bending area together with the further bending area, so that the bead embossed in the material of the clamping leg can be located in this common bending area, that is, the bead can be arranged both in the bending area and in the further bending area.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass sich die Sicke nicht in den weiteren Biegebereich hineinerstreckt. Dementsprechend ist die Sicke vergleichsweise kurz, sodass sie vor dem weiteren Biegebereich endet. Alternativ kann die Sicke sich auch in den weiteren Biegebereich erstrecken.According to an advantageous embodiment of the invention, it is provided that the bead does not extend into the further bending area. Accordingly, the bead is comparatively short so that it ends before the wider bending area. Alternatively, the bead can also extend into the wider bending area.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Sicke eine dem gebogenen Verlauf des Klemmschenkels im Biegebereich folgende gebogene Kontur aufweist. Damit folgt die Sicke dem Konturzug der Geometrie der Klemmfeder zumindest in dem Bereich des Klemmschenkels, in dem die Sicke angeordnet ist. Die Sicke hat damit eine zur gebogenen Form des Klemmschenkels im Biegebereich zumindest ungefähr parallel verlaufende Oberfläche.According to an advantageous embodiment of the invention it is provided that the bead has a curved contour following the curved course of the clamping leg in the bending area. The bead thus follows the contour of the geometry of the clamping spring at least in the area of the clamping leg in which the bead is arranged. The bead thus has a surface that runs at least approximately parallel to the curved shape of the clamping leg in the bending area.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Sicke den Biegebereich geradlinig überbrückt. Dies erlaubt eine besonders einfache Herstellung der Sicke.According to an advantageous embodiment of the invention it is provided that the bead bridges the bending area in a straight line. This allows a particularly simple production of the bead.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass ein durch den Biegebereich gebildeter Winkel zwischen dem ersten und dem zweiten Bereich des Klemmschenkels wenigstens 10 Grad oder wenigstens 15 Grad beträgt. Der Winkel kann auch größere Werte annehmen, beispielsweise wenigstens 30 Grad oder wenigstens 40 Grad. Der Winkel ist somit zwischen dem zweiten Abschnitt des Klemmschenkels und einer Verlängerung des ersten Bereiches des Klemmschenkels gebildet.According to an advantageous embodiment of the invention it is provided that an angle formed by the bending area between the first and the second area of the clamping leg is at least 10 degrees or at least 15 degrees. The angle can also assume larger values, for example at least 30 degrees or at least 40 degrees. The angle is thus formed between the second section of the clamping leg and an extension of the first area of the clamping leg.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass im Bereich der Sicke das Material des Klemmschenkels an einer Einprägeseite des Klemmschenkels zu einer Einbuchtung und an der der Einprägeseite gegenüberliegenden Seite zu einer Ausbuchtung verformt ist. Dementsprechend ist das Material des Klemmschenkels im Bereich der Sicke an der Einprägeseite hineingedrückt und ragt an der gegenüberliegenden Seite etwas ab. Die Einbuchtung bildet damit eine Vertiefung auf der Einprägeseite des Klemmschenkels, z.B. in Form einer konkav verlaufenden Einbuchtung. Die Ausbuchtung bildet damit eine abragende Erhebung auf der der Einprägeseite gegenüberliegenden Seite des Klemmschenkels, z.B. in Form einer konvex verlaufenden Ausbuchtung.According to an advantageous embodiment of the invention it is provided that in the area of the bead the material of the clamping leg is deformed into an indentation on an embossed side of the clamping leg and into a bulge on the side opposite the embossed side. Accordingly, the material of the clamping leg is pressed in in the area of the bead on the embossed side and protrudes slightly on the opposite side. The indentation thus forms a depression on the embossing side of the clamping leg, for example in the form of a concave indentation. The bulge thus forms a protruding elevation on the side of the clamping leg opposite the embossing side, for example in the form of a convex bulge.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die konvex verlaufende Seite des Biegebereichs die Einprägeseite bildet. Die Einprägeseite kann insbesondere die Seite des Klemmschenkels sein, die dem Anlageschenkel gegenüberliegt. Auf diese Weise kann die Erhöhung der Federsteifigkeit des Klemmschenkels weiter optimiert werden.According to an advantageous embodiment of the invention, it is provided that the convex side of the bending area forms the embossing side. The embossing side can in particular be the side of the clamping leg which is opposite the contact leg. In this way, the increase in the spring stiffness of the clamping leg can be further optimized.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Höhe der Ausbuchtung geringer ist als die Materialdicke des Klemmschenkels im Biegebereich. Dementsprechend ist die Verformung des Materials des Klemmschenkels durch die Sicke vergleichsweise gering, sodass unerwünschte Materialschwächungen des Klemmschenkels durch zu große Umformgrade vermieden werden können.According to an advantageous embodiment of the invention it is provided that the height of the bulge is less than the material thickness of the clamping leg in the bending area. Accordingly, the deformation of the material of the clamping leg by the bead is comparatively small, so that undesired material weakening of the clamping leg due to excessive deformation levels can be avoided.
Der Klemmschenkel erstreckt sich hinsichtlich seiner Längendimension vom Federbogen bis zum freien Ende. Der Klemmschenkel ist aus einem federharten Blechmaterial gebildet, dessen Materialdicke zugleich die Dicke des Klemmschenkels (Dickendimension) bildet. Die Breite des Klemmschenkels ist die Dimension, die sich orthogonal zur Dickendimension und Längendimension des Klemmschenkels erstreckt. Die Höhe der Ausbuchtung ist dabei in Richtung der Dickendimension des Klemmschenkels gemessen, ausgehend vom benachbarten nicht durch die Sicke verformten Oberflächenbereich des Klemmschenkels an der der Einprägeseite gegenüberliegenden Seite.The length of the clamping leg extends from the spring bow to the free end. The clamping leg is formed from a spring-hard sheet metal material, the material thickness of which also forms the thickness of the clamping leg (thickness dimension). The width of the clamping leg is the dimension that extends orthogonally to the thickness dimension and length dimension of the clamping leg. The height of the bulge is measured in the direction of the thickness dimension of the clamping leg, starting from the adjacent surface area of the clamping leg that is not deformed by the bead on the side opposite the embossing side.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass sich die Sicke nicht über die gesamte Breite des Klemmschenkels erstreckt. Insbesondere kann die Sicke innerhalb der Breite des Klemmschenkels eingeformt sein, sodass sie sich nicht bis zu den linken und rechten seitlichen Rändern in Richtung der Breitendimension des Klemmschenkels hin erstreckt. Auf diese Weise kann durch die Sicke ein ausreichend steifes Querschnittsprofil des Klemmschenkels ohne erneute Schwächungen realisiert werden. Die Länge der Sicke, gemessen in Längsrichtung des Klemmschenkels, kann beispielsweise ein- bis fünfmal so groß sein wie die Breite der Sicke.According to an advantageous embodiment of the invention it is provided that the bead does not extend over the entire width of the clamping leg. In particular, the bead can be formed within the width of the clamping leg so that it does not extend as far as the left and right lateral edges in the direction of the width dimension of the clamping leg. In this way, the bead allows a sufficiently rigid cross-sectional profile of the clamping leg without renewed Weakenings are realized. The length of the bead, measured in the longitudinal direction of the clamping leg, can for example be one to five times as large as the width of the bead.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Klemmschenkel wenigstens eine Verjüngung aufweist, durch die die Breite des Klemmschenkels vom Federbogen in Richtung des freien Endes des Klemmschenkels verringert ist, wobei die Sicke in dem Bereich des Klemmschenkels angeordnet ist, der die Verjüngung aufweist. Auf diese Weise kann durch die Sicke ein hinsichtlich der Federsteifigkeit besonders kritischer Bereich des Klemmschenkels verstärkt werden.According to an advantageous embodiment of the invention, it is provided that the clamping leg has at least one taper, by means of which the width of the clamping leg is reduced from the spring bow in the direction of the free end of the clamping leg, the bead being arranged in the area of the clamping leg which has the taper . In this way, an area of the clamping leg that is particularly critical with regard to the spring stiffness can be reinforced by the bead.
Die Verjüngung kann als kontinuierliche Verjüngung ausgebildet sein, z.B. mit einem linearen oder nicht linearen Übergang von einem breiten Bereich des Klemmschenkels zu einem schmaleren Bereich des Klemmschenkels. Wie erläutert, ist der schmalere Bereich des Klemmschenkels näher am freien Ende des Klemmschenkels angeordnet als der breitere Bereich des Klemmschenkels. Die Verjüngung kann auch als stufenartige Breitenverringerung ausgebildet sein. Dies hat insbesondere den Vorteil, dass an der auf diese Weise seitlich am Klemmschenkel gebildeten wenigstens einen Stufe ein Betätigungselement zur Betätigung der Klemmfeder, z.B. ein Betätigungshebel, ein Betätigungsdrücker oder ein sonstiges Werkzeug, angreifen kann. Der so gebildete stufenartige Absatz kann damit als Betätigungslasche der Klemmfeder genutzt werden. Die Verjüngung kann einseitig oder beidseitig am Klemmschenkel vorhanden sein. Dementsprechend kann auch die stufenartige Breitenverringerung einseitig oder beidseitig am Klemmschenkel vorhanden sein. Durch beidseitige Anordnung der stufenartigen Breitenverringerung kann insbesondere eine beidseitige, symmetrische Kraftbeaufschlagung des Klemmschenkels zum Öffnen der Klemmstelle aufgebracht werden.The taper can be designed as a continuous taper, for example with a linear or non-linear transition from a wide area of the clamping leg to a narrower area of the clamping leg. As explained, the narrower area of the clamping leg is arranged closer to the free end of the clamping leg than the wider area of the clamping leg. The taper can also be designed as a step-like reduction in width. This has the particular advantage that an actuating element for actuating the clamping spring, e.g. an actuating lever, an actuating lever or some other tool, can act on the at least one step formed on the side of the clamping leg in this way. The step-like shoulder formed in this way can thus be used as an actuating tab for the clamping spring. The taper can be present on one or both sides of the clamping leg. Accordingly, the step-like reduction in width can also be present on one side or on both sides of the clamping leg. By arranging the step-like reduction in width on both sides, in particular a two-sided, symmetrical application of force to the clamping leg can be applied to open the clamping point.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Sicke ihre größte Längendimension in Richtung der Längserstreckung des Klemmschenkels aufweist. Die Haupterstreckungsrichtung der Sicke entspricht damit der Richtung der Längserstreckung des Klemmschenkels. Auf diese Weise kann eine besonders effiziente Erhöhung der Klemmkraft der Klemmfeder realisiert werden.According to an advantageous embodiment of the invention it is provided that the bead has its greatest length dimension in the direction of the longitudinal extension of the clamping leg. The main direction of extent of the bead thus corresponds to Direction of the longitudinal extension of the clamping leg. In this way, a particularly efficient increase in the clamping force of the clamping spring can be achieved.
Die eingangs genannte Aufgabe wird außerdem gelöst durch eine Leiteranschlussklemme zum Anschluss eines elektrischen Leiters mittels Federkraftklemmung, aufweisend wenigstens eine Klemmfeder, eine Stromschiene und ein Isolierstoffgehäuse, das die Klemmfeder und die Stromschiene zumindest überwiegend umgibt, wobei die Klemmfeder als Klemmfeder der zuvor erläuterten Art ausgebildet ist. Auch hierdurch können die zuvor erläuterten Vorteile realisiert werden.The above-mentioned object is also achieved by a conductor connection terminal for connecting an electrical conductor by means of spring force clamping, having at least one clamping spring, a busbar and an insulating material housing which at least predominantly surrounds the clamping spring and the busbar, the clamping spring being designed as a clamping spring of the type explained above . The advantages explained above can also be realized in this way.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Leiteranschlussklemme einen verschwenkbaren Betätigungshebel zur manuellen Betätigung des Klemmschenkels der Klemmfeder aufweist. Der Betätigungshebel dient zum Öffnen und/oder Schließen einer zwischen dem Klemmschenkel und der Stromschiene gebildeten Klemmstelle zur Klemmung des elektrischen Leiters. Durch den Betätigungshebel kann somit die zwischen dem Klemmschenkel und der Stromschiene gebildete Klemmstelle nach Wahl des Benutzers geöffnet oder geschlossen werden kann. Dies erlaubt eine einfache und ergonomische Bedienung der Leiteranschlussklemme. Es ist kein zusätzliches Werkzeug für die Betätigung des Klemmschenkels erforderlich.According to an advantageous embodiment of the invention, it is provided that the conductor connection terminal has a pivotable actuating lever for manual actuation of the clamping leg of the clamping spring. The actuating lever is used to open and / or close a clamping point formed between the clamping leg and the busbar for clamping the electrical conductor. By means of the actuating lever, the clamping point formed between the clamping leg and the busbar can thus be opened or closed at the discretion of the user. This allows simple and ergonomic operation of the conductor connection terminal. No additional tools are required to operate the clamping leg.
Der Betätigungshebel kann eine linke und eine rechte Seitenwange aufweisen. Zwischen der linken und der rechten Seitenwange kann ein Leiteraufnahmeraum zur Aufnahme des an der Klemmstelle festgeklemmten elektrischen Leiters angeordnet sein. Dies ermöglicht die Realisierung einer besonders kleinbauenden Leiteranschlussklemme, da der zum Teil vom Betätigungshebel genutzte Bauraum zugleich für die Anordnung des elektrischen Leiters genutzt werden kann. Der elektrische Leiter kann damit zwischen der linken und der rechten Seitenwange des Betätigungshebels eingesteckt oder hindurchgesteckt werden, um in der Leiteranschlussklemme angeklemmt zu werden.The actuating lever can have a left and a right side wall. A conductor receiving space for receiving the electrical conductor clamped at the clamping point can be arranged between the left and the right side cheek. This enables the implementation of a particularly compact conductor connection terminal, since the installation space that is partly used by the actuating lever can also be used for the arrangement of the electrical conductor. The electrical conductor can thus be inserted or pushed through between the left and right side panels of the actuating lever in order to be clamped in the conductor connection terminal.
Der Betätigungshebel kann wenigstens ein mechanisch auf den Klemmschenkel zum Betätigen des Klemmschenkels einwirkendes Betätigungselement aufweisen, z.B. eine Betätigungskontur. Das Betätigungselement wirkt dann auf eine Betätigungslasche des Klemmschenkels ein. Die Betätigungslasche des Klemmschenkels kann insbesondere bei einem verjüngend ausgebildeten Klemmschenkel in dem breiteren Bereich des Klemmschenkels angeordnet sein.The actuating lever can have at least one actuating element that acts mechanically on the clamping limb to actuate the clamping limb, for example an actuating contour. The actuating element then acts on an actuating tab of the clamping leg. The actuating tab of the clamping leg can be arranged in the wider area of the clamping leg, in particular in the case of a tapering clamping leg.
Im Sinne der vorliegenden Erfindung ist unter dem unbestimmten Begriff "ein" kein Zahlwort zu verstehen. Wenn also z.B. von einem Bauteil die Rede ist, so ist dies im Sinne von "mindestens einem Bauteil" zu interpretieren. Soweit Winkelangaben in Grad gemacht werden, beziehen sich diese auf ein Kreismaß von 360 Grad (360°).In the context of the present invention, the indefinite term “a” is not to be understood as a numerical word. If, for example, a component is mentioned, this is to be interpreted in the sense of "at least one component". As far as angles are given in degrees, these refer to a circle of 360 degrees (360 °).
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Verwendung von Zeichnungen näher erläutert.The invention is explained in more detail below on the basis of exemplary embodiments using drawings.
Es zeigen
Figuren 1bis 4- eine Klemmfeder in verschiedenen Ansichten und
Figur 5- eine Leiteranschlussklemme mit einer Klemmfeder gemäß
den Figuren 1bis 4 in seitlicher Schnittansicht und - Figuren 6 bis 9
- eine weitere Ausführungsform einer Klemmfeder in verschiedenen Ansichten und
- Figur 10
- eine Leiteranschlussklemme mit einer Klemmfeder gemäß den Figuren 6 bis 9 in einer seitlichen Schnittansicht und
- Figur 11
- einen Betätigungshebel in einer perspektivischen Ansicht und
- Figur 12
- den Betätigungshebel gemäß
Figur 11 in seitlicher Schnittdarstellung.
- Figures 1 to 4
- a spring clip in different views and
- Figure 5
- a conductor connection terminal with a clamping spring according to Figures 1 to 4 in a side sectional view and
- Figures 6 to 9
- a further embodiment of a clamping spring in different views and
- Figure 10
- a conductor connection terminal with a clamping spring according to FIGS. 6 to 9 in a lateral sectional view and
- Figure 11
- an operating lever in a perspective view and
- Figure 12
- the operating lever according to
Figure 11 in a lateral sectional view.
Dabei werden folgende Bezugszeichen verwendet:
- 1
- Leiteranschlussklemme
- 2
- Isolierstoffgehäuse
- 3
- Stromschiene
- 4
- Klemmfeder
- 5
- Betätigungshebel
- 7
- Sicke
- 20
- Leitereinführungsöffnung
- 30
- Klemmstelle
- 40
- Anlageschenkel
- 41
- schmaler Abschnitt des Anlageschenkels
- 42
- Federbogen
- 43
- Klemmschenkel
- 50
- manueller Betätigungsbereich
- 51
- Betätigungswulst
- 52, 53
- Seitenwandabschnitte
- 54
- Leiteraufnahmeraum
- 55
- Rastnase
- 56
- Betätigungselement
- 57, 58
- Betätigungsscheiben
- 59
- Außenstirnseite
- 60, 64
- Endbereiche
- 61, 65
- Führungsschlitz
- 62
- V-förmiger Einschnitt
- 63
- Drehachse
- 431
- erster Bereich des Klemmschenkels
- 432
- zweiter Bereich des Klemmschenkels
- 433
- Biegebereich des Klemmschenkels
- 434
- weiterer Biegebereich des Klemmschenkels
- 435
- Zwischenbereich des Klemmschenkels
- 436
- Klemmkante
- 437
- Fixierungsabschnitt
- 438
- Verjüngung des Klemmschenkels
- 439
- Verjüngung des Klemmschenkels
- B1
- Breite des Klemmschenkels
- B2
- Breite des Klemmschenkels
- B3
- Breite der Sicke
- D
- Dicke des Klemmschenkels
- H
- Höhe der Sicke
- L
- Länge der Sicke
- α
- Winkel
- 1
- Conductor connection terminal
- 2
- Insulated housing
- 3
- Busbar
- 4th
- Clamp spring
- 5
- Operating lever
- 7th
- Bead
- 20th
- Conductor entry opening
- 30th
- Terminal point
- 40
- Contact leg
- 41
- narrow section of the contact leg
- 42
- Spring bow
- 43
- Clamp leg
- 50
- manual operating range
- 51
- Actuating bead
- 52, 53
- Sidewall sections
- 54
- Ladder reception room
- 55
- Locking lug
- 56
- Actuator
- 57, 58
- Actuating discs
- 59
- Outer face
- 60, 64
- End areas
- 61, 65
- Guide slot
- 62
- V-shaped incision
- 63
- Axis of rotation
- 431
- first area of the clamp leg
- 432
- second area of the clamp leg
- 433
- Bending area of the clamping leg
- 434
- further bending area of the clamping leg
- 435
- Intermediate area of the clamping leg
- 436
- Clamping edge
- 437
- Fixation section
- 438
- Taper of the clamping leg
- 439
- Taper of the clamping leg
- B1
- Width of the clamp leg
- B2
- Width of the clamp leg
- B3
- Width of the bead
- D.
- Thickness of the clamp leg
- H
- Height of the bead
- L.
- Length of the bead
- α
- angle
Unter Bezugnahme auf die
Der Anlageschenkel 40 dient zur Fixierung der Klemmfeder 4 in der Leiteranschlussklemme 1, z.B. an einer Stromschiene 3, einem Isolierstoffgehäuse 2 oder einem sonstigen zur Befestigung der Klemmfeder 4 geeigneten Bauteil der Leiteranschlussklemme1 . Hierzu weist der Anlageschenkel 40 an seinem freien Ende einen gebogenen Fixierungsabschnitt 437 auf. Über den Fixierungsabschnitt 437 kann der Anlageschenkel 40 beispielsweise in einer Aussparung einer Stromschiene 3 eingehängt werden. Wie man erkennt, kann der Anlageschenkel 40 derart ausgebildet sein, dass er sich vom Federbogen 42 zu seinem freien Ende hin verjüngt, z.B. einfach oder mehrfach abgestuft verjüngt. Im Ausführungsbeispiel ist dargestellt, dass der Anlageschenkel 40 im Übergang zu einem Abschnitt 41 schmaler wird. Der Fixierungsabschnitt 437 kann gegenüber dem Abschnitt 41 noch schmaler ausgebildet sein.The
Der Klemmschenkel 43 weist einen ersten Bereich 431 auf, der sich an den Federbogen 43 anschließt. Der Klemmschenkel 43 weist außerdem einen zweiten Bereich 432 auf, der mit dem freien Ende des Klemmschenkels 43 endet. Am freien Ende des Klemmschenkels 43 kann beispielsweise eine Klemmkante 436 vorhanden sein. Der Klemmschenkel 43 geht vom ersten Bereich 431 über einen oder mehrere Biegebereiche 433, 434 in den zweiten Bereich 432 über. Beispielhaft sind zwei Biegebereiche 433, 434 dargestellt. Zwischen den Biegebereichen 433, 434 weist der Klemmschenkel 43 einen Zwischenbereich 435 auf.The clamping
Der Klemmschenkel 43 kann, wie dargestellt, ebenfalls zum freien Ende hin verjüngend ausgebildet sein, d.h. die Breite des Klemmschenkels 43 verringert sich vom Federbogen 42 zum freien Ende hin. Die Breite des Klemmschenkels kann sich beispielsweise von dem Maß B1 auf das B2 reduzieren. Hierzu kann der Klemmschenkel 43 eine Verjüngung 438, 439 aufweisen, durch die die Breitenverringerung kontinuierlich oder, wie im Ausführungsbeispiel dargestellt, stufenartig erfolgt. Beispielhaft ist dargestellt, dass an beiden Seiten des Klemmschenkels 43, d.h. links und rechts des schmaleren zweiten Bereichs 432, jeweils eine Verjüngung 438, 439 vorhanden ist. Die sich an die Verjüngung 438, 439 anschließenden breiteren Materialbereiche des Klemmschenkels können beispielsweise als Betätigungslaschen für die Betätigung des Klemmschenkels 43 durch einen Betätigungshebel 5, einen Betätigungsdrücker oder ein Betätigungswerkzeug genutzt werden.The clamping
Der Klemmschenkel 43 weist zumindest im Biegebereich 433 eine in das Material des Klemmschenkels 43 eingeprägte Sicke 7 auf. Die Sicke 7 dient zur Erhöhung der Federsteifigkeit des Klemmschenkels 43. Wie man erkennt, erstreckt sich die Sicke 7 vom Biegebereich 433 ein Stück in den zweiten Bereich 432 hinein. In der anderen Richtung kann sich die Sicke 7 vom Biegebereich 433 ein Stück in den ersten Bereich 431 hineinerstrecken, oder zumindest in den Zwischenbereich 435. Beispielsweise kann die Sicke 7 vor dem weiteren Biegebereich 434 enden.The clamping
Vorteilhaft ist es ferner, wenn die Breite B3 der Sicke 7 geringer ist als die Breite des Klemmschenkels 43 in dem die Sicke 7 aufweisenden Bereich, d.h. kleiner als das Maß B2. Die Länge L der Sicke 7 kann vorteilhafterweise größer als die Breite B3 der Sicke 7 sein, z.B. ein- bis fünfmal so lang wie die Breite B3. Die Höhe H der Sicke 7 kann vorteilhafterweise kleiner als die Materialdicke D des Klemmschenkels 43 sein, insbesondere die Materialdicke des Klemmschenkels 43 im Biegebereich 433.It is also advantageous if the width B3 of the
Die
Die Leiteranschlussklemme 1 weist einen Betätigungshebel 5 auf, der an einem manuellen Betätigungsbereich 50 von einem Anwender manuell in einer Verschwenkbewegung betätigt werden kann. Hierdurch kann ein Betätigungselement 56 des Betätigungshebels 5 bewegt werden, das gegen den Klemmschenkel 43 im Bereich der jeweiligen Verjüngung 438, 439 drückt und hierdurch den Klemmschenkel 43 zum Anlageschenkel 40 hin auslenkt. Die Klemmkante 436 wird hierdurch von der Stromschiene 3 fortbewegt, sodass die Klemmstelle 30 geöffnet wird.The
Die Ausführungsbeispiele gemäß den
Die
Die
Die
Zwischen den Seitenwandabschnitten 52, 53 ist ein Leiteraufnahmeraum 54 zur Aufnahme des anzuklemmenden elektrischen Leiters vorhanden.A
Erkennbar ist weiterhin, dass von den Seitenwandabschnitten 52, 53 mit einem Führungsschlitz 61, 65 beabstandete teilkreisförmige Betätigungsscheiben 57, 58 mit einem V-förmigen Einschnitt 62 angeordnet sind. Im Bereich der V-förmigen Einschnitte 62 ist jeweils ein Betätigungsabschnitt 56 ausgebildet, der zur Beaufschlagung des zugeordneten Klemmschenkels 43 mit einer Federbetätigungskraft dient. Erkennbar ist, dass die Betätigungsabschnitte 56, ebenso wie der manuelle Betätigungsbereich 50, auf den eine Hebelschwenkkraft ausgeübt wird, auf der gleichen Seite relativ zur Drehachse 63 liegen. Dies führt dazu, dass die über die Betätigungsabschnitte 56 ausgeübten Federbetätigungskräfte auf der gleichen Seite relativ zur Drehachse 63 wie die zum Verschwenken auf den manuellen Betätigungsbereich 50 aufgebrachte Hebelschwenkkraft wirken.It can also be seen that part-
Erkennbar ist weiterhin, dass die Betätigungsscheiben 57, 58 teilkreisförmig gekrümmte Außenstirnseiten 59 haben, mit denen der Betätigungshebel 5 um eine virtuelle Drehachse 63 schwenkbar im Gehäuseteil 1 gelagert wird.It can also be seen that the
Die Drehachse 63 erstreckt sich durch das Zentrum eines durch die Außenstirnseite 59 gebildeten Teilkreises.The axis of
Deutlich wird zudem, dass von dem manuellen Betätigungsbereich 50 auf der Seite, die der Betätigungswulst 51 gegenüberliegt, eine Rastnase 55 zum Leiteraufnahmeraum 54 hin hervorragt. Die Rastnase 55 dient der Verrastung des Betätigungshebels 5 mit dem Isolierstoffgehäuse 2 in der Schließstellung.It is also clear that from the
Claims (17)
- Clamping spring (4) for a conductor terminal (1) for connecting an electrical conductor by means of spring force clamping, the clamping spring (4) having an abutment leg (40) for fixing the clamping spring (4) in the conductor terminal (1), a spring bend (42) adjoining the abutment leg (40) and a clamping leg (43) adjoining the spring bend (42), the clamping leg (43) being set up for clamping the electrical conductor by means of its free end, the clamping leg (43) having at least one bead (7) embossed in the material of the clamping leg (43), characterized in that the bead (7) does not extend as far as the free end of the clamping leg (43) but ends before it.
- A clamping spring according to claim 1, characterised in that the clamping leg (43) has a first region (431) adjoining the spring bend (42) and a second region (432) ending with the free end of the clamping leg (43), the first region (431) being connected to the second region (432) via a bending region (433) of the clamping leg (43) in which the clamping leg (43) has a bent shape.
- A clamping spring according to claim 2, characterised in that the clamping leg (43) has the at least one bead (7) embossed into the material of the clamping leg (43) at least in the bending region (433).
- A clamping spring according to claim 3, characterised in that the bead (7) extends from the bending region (433) into the first region (431) and/or into the second region (432) of the clamping leg (43).
- A clamping spring according to any one of claims 2 to 4, characterised in that the clamping leg (43) has a further bending region (434) between the first and second regions (431, 432) in which the clamping leg (43) has a bent shape.
- A clamping spring according to claim 5, characterised in that the bead (7) does not extend into the further bending region (434).
- A clamping spring according to one of claims 2 to 6, characterised in that the bead (7) has a curved contour following the curved course of the clamping leg (43) in the bending region (433).
- A clamping spring according to claim 3 or 4, characterised in that the bead (7) bridges the bending area (433) in a straight line.
- A clamping spring according to any one of the preceding claims, characterised in that an angle (a) formed by the bending region (433) between the first and second regions (431, 432) of the clamping leg (43) is at least 10 degrees or at least 15 degrees.
- A clamping spring according to one of the preceding claims, characterised in that in the region of the bead (7) the material of the clamping leg (43) is deformed into an indentation on an embossed side of the clamping leg (43) and into a bulge on the side opposite the embossed side.
- A clamping spring according to claim 10, characterised in that the convex side of the bending area (433) forms the embossing side.
- A clamping spring according to claim 10 or 11, characterised in that the height (H) of the bulge is less than the material thickness (D) of the clamping leg (43) in the bending region (433).
- A clamping spring according to one of the preceding claims, characterised in that the bead (7) does not extend over the entire width (B1, B2) of the clamping leg (43).
- A clamping spring according to any one of the preceding claims, characterised in that the clamping leg (43) has at least one taper (438, 439) by which the width of the clamping leg (43) is reduced from the spring bend (42) towards the free end of the clamping leg (43), the bead (7) being arranged in the region of the clamping leg (43) having the taper (438, 439).
- A clamping spring according to one of the preceding claims, characterised in that the bead (7) has its greatest longitudinal dimension (L) in the direction of the longitudinal extension of the clamping leg (43).
- A conductor terminal (1) for connecting an electrical conductor by means of spring force clamping, comprising at least one clamping spring (4), a busbar (3) and an insulating material housing (2) which at least predominantly surrounds the clamping spring (4) and the busbar (3), characterised in that the clamping spring (4) is constructed according to one of the preceding claims.
- Conductor terminal (1) according to claim 16, characterised in that the conductor terminal (1) has a pivotable actuating lever (5) for manual actuation of the clamping leg (43) of the clamping spring (4), for opening and/or closing a clamping point (30) formed between the clamping leg (43) and the busbar (3) for clamping the electrical conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL20152197T PL3687002T3 (en) | 2019-01-25 | 2020-01-16 | Spring clamp and cable connection clamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019101880.3A DE102019101880B4 (en) | 2019-01-25 | 2019-01-25 | Clamping spring and conductor connection terminal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3687002A1 EP3687002A1 (en) | 2020-07-29 |
EP3687002B1 true EP3687002B1 (en) | 2021-09-01 |
Family
ID=69174391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20152197.8A Active EP3687002B1 (en) | 2019-01-25 | 2020-01-16 | Spring clamp and cable connection clamp |
Country Status (6)
Country | Link |
---|---|
US (1) | US11024987B2 (en) |
EP (1) | EP3687002B1 (en) |
CN (1) | CN111490367A (en) |
DE (1) | DE102019101880B4 (en) |
ES (1) | ES2894353T3 (en) |
PL (1) | PL3687002T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202018106897U1 (en) * | 2018-12-04 | 2020-03-05 | WAGO Verwaltungsgesellschaft mit beschränkter Haftung | Spring terminal |
USD937219S1 (en) * | 2019-06-27 | 2021-11-30 | Jiangmen Krealux Electrical Appliances Co., Ltd. | Wire connector for terminal block |
DE102020119372B4 (en) * | 2020-07-22 | 2023-12-07 | WAGO Verwaltungsgesellschaft mit beschränkter Haftung | Conductor connection terminal |
US11749927B1 (en) | 2022-03-03 | 2023-09-05 | Richard Goren Enterprises, Llc | Quick install banana plug |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3346027C2 (en) | 1983-12-20 | 1986-03-27 | Phönix Elektrizitätsgesellschaft H. Knümann GmbH & Co KG, 4933 Blomberg | Electrical connector |
DE3515842C2 (en) * | 1985-05-02 | 1994-08-04 | Linde Ag | Industrial furnace and method for operating the same |
DE9002887U1 (en) * | 1990-03-15 | 1990-05-17 | Heinrich Kopp Gmbh & Co Kg, 8756 Kahl, De | |
JP3208507B2 (en) * | 1992-11-13 | 2001-09-17 | 能美防災株式会社 | Self-locking terminal device for fire detector |
DE19646103C1 (en) | 1996-11-08 | 1998-03-12 | Phoenix Contact Gmbh & Co | Bent metal cage spring clamp for mounting on current rail |
DE10153170C1 (en) | 2001-10-27 | 2003-02-20 | Phoenix Contact Gmbh & Co | Electrical spring clamp for connecting electrical conductor with printed circuit board has bearing arm provided with integral solder pins for direct mounting on latter |
US6893286B2 (en) * | 2003-09-06 | 2005-05-17 | Weidmüller Interface GmbH & Co. KG | Connector apparatus adapted for the direct plug-in connection of conductors |
DE102004046471B3 (en) * | 2004-09-23 | 2006-02-09 | Phoenix Contact Gmbh & Co. Kg | Electrical connection or connection terminal |
DE102006047254B3 (en) * | 2006-10-06 | 2008-05-21 | Abb Ag | Installation switching device e.g. line safety switch, has opening covered by covering part pivotably mounted on housing, where part has connecting area with number of connection openings that correspond to number of conductors |
DE102007024690B4 (en) * | 2007-05-25 | 2009-06-04 | Phoenix Contact Gmbh & Co. Kg | Electrical connection or connection terminal |
DE102008039864B4 (en) * | 2008-08-27 | 2011-01-05 | Wago Verwaltungsgesellschaft Mbh | clamping device |
CN102035079A (en) * | 2009-09-29 | 2011-04-27 | 卢迪 | Spring clamping mechanism for clamping wire and method for processing conductive bar |
CN201584518U (en) * | 2009-10-29 | 2010-09-15 | 北京宝力马传感技术有限公司 | Wiring clamp |
DE102013101406B4 (en) * | 2013-02-13 | 2018-07-12 | Wago Verwaltungsgesellschaft Mbh | Conductor terminal |
DE102013101409B4 (en) * | 2013-02-13 | 2022-01-20 | Wago Verwaltungsgesellschaft Mbh | conductor terminal |
ES2834962T3 (en) * | 2013-08-27 | 2021-06-21 | Weidmueller Interface Gmbh & Co Kg | Spring terminal for cable |
DE102014119421B4 (en) | 2014-12-22 | 2017-02-02 | Wago Verwaltungsgesellschaft Mbh | Connection terminal and method for mounting a connection terminal |
CN105375121B (en) * | 2015-12-02 | 2019-11-19 | 宁波速普电子有限公司 | A kind of elastic wire folder |
DE202016104374U1 (en) | 2016-08-09 | 2017-11-13 | Wago Verwaltungsgesellschaft Mbh | Spring terminal for connecting an electrical conductor |
DE202017107800U1 (en) * | 2017-05-12 | 2018-08-17 | Electro Terminal Gmbh & Co Kg | clamp |
DE202017105162U1 (en) | 2017-08-28 | 2018-11-30 | Wago Verwaltungsgesellschaft Mbh | Conductor terminal |
CN208385649U (en) * | 2018-06-28 | 2019-01-15 | 慈溪市鼎力塑胶有限公司 | A kind of electric connector |
-
2019
- 2019-01-25 DE DE102019101880.3A patent/DE102019101880B4/en active Active
-
2020
- 2020-01-16 ES ES20152197T patent/ES2894353T3/en active Active
- 2020-01-16 PL PL20152197T patent/PL3687002T3/en unknown
- 2020-01-16 EP EP20152197.8A patent/EP3687002B1/en active Active
- 2020-01-19 CN CN202010060969.3A patent/CN111490367A/en active Pending
- 2020-01-24 US US16/752,098 patent/US11024987B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20200243986A1 (en) | 2020-07-30 |
DE102019101880A1 (en) | 2020-07-30 |
EP3687002A1 (en) | 2020-07-29 |
US11024987B2 (en) | 2021-06-01 |
ES2894353T3 (en) | 2022-02-14 |
CN111490367A (en) | 2020-08-04 |
DE102019101880B4 (en) | 2023-09-14 |
PL3687002T3 (en) | 2022-01-17 |
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