Electrical wiring clamp

Abstract

The invention relates to an electrical connection terminal (10) having a clamping spring (200) for clamping an electrical conductor (20), having an actuating element (400), having a coupling element (510, 510 ', 520, 520', 530, 530 ', 540) for mechanically coupling the actuating element (400) and the clamping spring (200), the clamping spring (200) having a clamping arm (210) with a main direction of extension (EK), the clamping arm (210) having a main direction of extension (EK), the clamping arm (210) has a clamping edge (240) for clamping the electrical conductor (20),-wherein the clamping arm (210) has a coupling region (600) which is spaced from the clamping edge (240),-wherein the coupling region (600) has a bearing edge (601, 601 ', 602, 603, 604, 605, 604', 605 ', 606, 607, 608, 609, 610, 611, 612, 613, 614) which is substantially perpendicular to a main extension direction (EK) of the clamping arm (210) for bearing the coupling element (510, 510', 520, 520 ', 530, 530', 540).

Description

[0001] This invention application is a divisional application of an invention patent application with an international application date of May 19, 2020, a priority date of June 24, 2019, an international application number of PCT / EP2020 / 063923, a national application number of 202080004059.1, and an invention name of “Electrical terminal clamp”.

[0002] From document DE 10 2015 100 823 A1, an electrical terminal with a terminal housing is known, the terminal housing having a conductor entry opening, the terminal also having a busbar arranged in the terminal housing and having a spring element rotatably supported in the terminal housing. The spring element can be pivoted into an open position and a closed position, wherein in the closed position, the conductor inserted into the conductor entry opening can be clamped relative to the busbar by means of the spring element. The terminal has an actuating element rotatably supported in the terminal housing, by means of which the spring element can be driven to switch to the open position and the closed position. The actuating element has a base body and an actuating arm, the base body having a tool entry opening. Both the base body and the actuating arm are constructed in two parts, wherein the actuating arm is constructed to be pivotally movable relative to the base body.

[0003] Document DE 10 2017 108 171 A1 discloses a spring force terminal for connecting an electrical conductor. It comprises a housing part, a conductive contact element arranged on the housing part, and a spring element, wherein the contact element is used to make electrical contact with the conductor connected to the spring force terminal. The spring element has a clamping arm adjustable relative to the contact element, and is used to apply a spring force to the conductor connected to the spring force terminal. The spring force terminal has an operating element for adjusting the clamping arm. In addition, a pulling element is provided, which is movably coupled to the operating element and movably coupled and constructed with the clamping arm. When the operating element is operated, the pulling element applies a pulling force on the clamping arm to adjust the clamping arm relative to the contact element.

[0004] A terminal clamp for connecting an electrical conductor to a housing is known from the document WO 2018 / 010893 A1. The terminal clamp has a busbar arranged in the housing, a clamping spring arranged in the housing, and a pivotally supported operating lever. When the operating lever is pivoted, the clamping spring can be switched to an open position and a closed position. The clamping spring has a clamping arm for clamping a conductor introduced into the housing relative to the busbar in the closed position. An operating plate is arranged on the clamping arm so that pressure is applied to the operating plate as the clamping spring is switched from the closed position to the open position by the operating lever.

[0005] The object of the present invention is to provide an electrical terminal which is as improved as possible. This object is achieved by the features of independent claim 1. Advantageous developments are the subject matter of the dependent claims.

[0006] An electrical terminal is therefore provided. The electrical terminal has a clamping spring for clamping an electrical conductor. The electrical terminal has an actuating element. The electrical terminal has a coupling element for mechanically coupling the actuating element and the clamping spring.

[0007] The clamping spring has a clamping arm with a main extension direction. The clamping arm has a clamping edge for clamping the electrical conductor. The clamping arm has a coupling region spaced apart from the clamping edge. The coupling region has a supporting edge substantially perpendicular to the main extension direction of the clamping arm for supporting the coupling element.

[0008] The coupling element has a supporting region. The supporting region of the coupling element bears against the supporting edge of the clamping arm for support and / or the supporting region of the coupling element at least partially surrounds the supporting edge of the clamping arm for support.

[0009] According to an advantageous refinement, one or more supporting edges are formed in the coupling region. For example, one, two or four supporting edges can be formed in the same coupling region. According to an advantageous refinement, one or more coupling regions are formed.

[0010] According to an advantageous refinement, the clamping edge is formed at the free end of the clamping arm. Advantageously, the clamping edge is arranged relative to the inserted conductor, preferably at an angle relative to the insertion direction of the conductor. Preferably, exactly one clamping edge is provided, which clamps exactly one corresponding conductor. Alternatively, a further clamping edge is formed on the clamping spring relative to the clamping edge, for example in order to clamp different conductors.

[0011] According to an advantageous refinement, the clamping arm can be moved from the closed position into the open position and from the open position back into the closed position. Advantageously, the clamping arm can be deflected by means of the actuating element and the coupling element at least for the movement from the closed position into the open position. Advantageously, for the deflection, the actuating force acts substantially against the spring force.

[0012] According to an advantageous refinement, a coupling element is constructed between the operating element and the clamping arm for force transmission. Preferably, the coupling element is designed to mechanically couple the pivoting movement of the operating element with the deflecting movement of the clamping arm. For example, the coupling element is designed in the form of an articulated lever. Advantageously, the coupling element is supported with its first end on the clamping arm and / or with its second end on the operating element. Advantageously, the coupling element is made of plastic or metal.

[0013] According to an advantageous refinement, a first coupling element and a second coupling element are provided, wherein the first coupling element and the second coupling element are configured for mechanical coupling of the actuating element to the clamping spring. Preferably, the clamping arm has a first coupling region and a second coupling region. Preferably, the first coupling region has a first supporting edge and the second coupling region has a second supporting edge. According to an advantageous refinement, the first coupling region and the second coupling region are spaced apart from each other at least transversely to the main extension direction of the clamping arm.

[0014] According to an advantageous improved design, the operating element is configured as a lever. Alternatively, the operating element is configured as a pressure piece or the like. Advantageously, the operating element is configured at least for manual operation. Advantageously, the operating element has a gripping area. Alternatively, it is feasible that the operating element is configured with an interface for an operating tool.

[0015] According to an advantageous improved design, the coupling region is spaced apart from the clamping edge along the main extension direction of the clamping arm. Additionally or alternatively, the coupling region is spaced apart from the clamping edge perpendicular to the main extension direction of the clamping arm. Advantageously, the coupling region is configured outside the conductor entry region so that the probability of the conductor colliding with the coupling element is reduced when the conductor is introduced.

[0016] According to an advantageous improved design, the coupling element and the clamping spring are not of one-piece construction. Preferably, the coupling element and the clamping spring are separated and preferably constructed from different materials, for example, from different metals. According to an advantageous improved design, the coupling element and the operating element are composed of multiple parts. Alternatively, it is also possible that the coupling element and the operating element are of one-piece construction. For example, the coupling element is mechanically coupled to the operating element by means of a film hinge.

[0017] According to an advantageous refinement, the coupling element and the clamping spring are designed to be movable relative to one another. Preferably, the coupling element and the clamping spring are designed to be at least rotatable relative to one another. Alternatively or in combination with another refinement, the coupling element and the clamping spring are translatable relative to one another. According to an advantageous refinement, the coupling element and the clamping spring are designed for a detachable or releasable mechanical coupling. Advantageously, the coupling element and the clamping spring are designed to be able to engage and disengage.

[0018] According to advantageous improved design, the coupling element is configured to transmit the pulling force of the clamping arm that is used to deflect the clamping spring. Here, the pulling force acts in the direction basically opposite to the spring force.

[0019] According to alternative or combined improved design, coupling element is configured to transmit the pressure force of the clamping arm that is used to deflect the clamping spring. Here, the pressure acts along the direction opposite to the spring force basically.

[0020] According to an advantageous refinement, the support edge in the coupling region is formed by a step between a first region of the clamping arm and a second region which is narrower than the first region. Preferably, the second region is designed closer to the clamping edge than the first region. Advantageously, the first region and the narrower second region are formed on both longitudinal sides of the clamping arm. Advantageously, the first region and the second region are arranged symmetrically, in particular mirror-symmetrically.

[0021] According to an advantageous refinement, the supporting edge is formed in the coupling region by an opening in the clamping arm. Advantageously, the opening is substantially surrounded by the material of the clamping arm. For example, the open coupling region has two supporting edges. For example, the two supporting edges are formed on a connecting strip of the clamping arm in the coupling region that limits the opening.

[0022] According to an advantageous further development, the support edge protrudes from the plane of the clamping arm. Advantageously, the support edge is configured to point away from the clamping arm.

[0023] According to a further advantageous development, the support edge is formed in the plane of the clamping arm.

[0024] According to an advantageous improved design, the coupling element has a bearing opening. The coupling region projects into the bearing opening with a bearing edge. Advantageously, the coupling region is configured in the form of a freely projecting projection of the clamping arm. Advantageously, the projection projects into the bearing opening with two bearing edges.

[0025] According to an advantageous further development, the support edge is formed by a bend, wherein the support edge is defined by the outer region of the bend. For example, the clamping arm is bent at an angle of between 90° and 180° in the coupling region to form the support edge. Better support properties can be achieved by a larger radius and a lack of burrs in the outer region of the bend.

[0026] According to an advantageous further development, the coupling element has a bow-shaped section in which the coupling region is arranged with a supporting edge for support. For example, the bow-shaped section is designed in the form of a hook.

[0027] According to an advantageous further development, the coupling element has a bracket. The bracket advantageously rests on the supporting edge for support. This prevents the bracket from moving in the main extension direction when the actuating element is actuated and during the coupled movement of the clamping arm from the closed position to the open position.

[0028] According to an advantageous further development, the electrical terminal has a housing in which the clamping spring is arranged. Advantageously, the housing is made of an electrically insulating material, such as plastic. Advantageously, the electrically conductive components of the terminal are arranged inside the housing.

[0029] According to an advantageous refinement, the conductor entry region is defined by a conductor entry channel formed in the housing. In the conductor entry region, the conductor is guided to a clamping position formed in the region of the clamping edge. The clamping position is defined, for example, by the clamping edge and a busbar section of the busbar. In an alternative refinement, the clamping spring itself is designed for conducting electricity.

[0030] According to an advantageous refinement, the coupling region is designed to be offset outside the conductor entry region in the main extension direction of the clamping arm. According to an alternative or combinable refinement, the coupling region is designed to be offset outside the conductor entry region perpendicular to the main extension direction of the clamping arm.

[0031] According to an advantageous development, the housing has a guide in which the coupling element is positioned. The coupling element is guided in the guide in such a way that the position of the coupling element is defined for each deflection of the clamping arm.

[0032] The indefinite article "one" is not to be understood as a specific quantity in this specification. Therefore, an electrical conductor is understood to be at least one electrical conductor, so that exactly one, two or more electrical conductors can be connected to the spring force clamp terminal. According to an advantageous improved design, the terminal has a busbar to which the conductors can be electrically connected. A busbar is understood to be exactly one, two or more busbars. The busbar can also be called a busbar. The busbar is optimized for electrical contact and electrical conductivity and has, for example, copper or a copper alloy.

[0033] A clamping spring is understood to be exactly one, two or more clamping springs. An operating element is understood to be exactly one, two or more operating elements. The clamping spring is suitable for clamping an electrical conductor. Advantageously, the clamping spring is formed and bent from spring steel. Advantageously, the clamping spring has exactly one clamping arm, which is used to clamp the corresponding electrical conductor so that the same conductor is not clamped by two or more clamping arms of the clamping spring. According to an advantageous improved design, the clamping spring has a resting arm. The resting arm of the clamping spring is configured to rest on the fixed region of the terminal clamp to withstand the spring force of the reaction. For example, the resting arm rests on the busbar and / or the housing. Advantageously, the terminal is constructed in a self-supporting manner by the clamping spring and the busbar. The resting arm is directly or indirectly connected to the clamping arm. For example, the resting arm is connected to the clamping arm by a spring bow. Advantageously, the resting arm, the spring bow and the clamping arm are integrally formed and bent, or alternatively, the resting arm and the clamping arm are fixed to each other.

[0034] The operating element is configured to be operable and can be operated, for example, manually or with the aid of an operating tool. The terminal clamp has a support and a mating support for supporting the operating element for pivoting movement. The mating support for the operating element is configured, for example, in a housing and / or a busbar. The coupling element is used to convert the pivoting movement of the operating element into a deflection of the clamping arm. For example, the first / second coupling element has one or more articulations and / or one or more rigid or at least partially flexible coupling rods and / or one or more supports, etc. Improvements to the design and features in the claims and the specification, in particular the design schemes described in the drawings, can be integrated into the terminal clamp individually or in combination. Here, the invention is not limited to the specific design schemes shown in the drawings.

[0035] The design scheme of the present invention is further described below with reference to the accompanying drawings.

[0036] Figure 1 An embodiment of a terminal clamp is shown,

[0037] Figure 2 An embodiment of a terminal clamp is shown,

[0038] Figure 3 An embodiment of a clamping spring is shown,

[0039] Figure 4 An embodiment of a terminal clamp is shown,

[0040] Figure 5 An embodiment of a terminal clamp is shown,

[0041] Figure 6 An embodiment of a clamping spring is shown,

[0042] Figure 7 An embodiment of a coupling region in a clamping arm is shown,

[0043] Figure 8 An embodiment of a coupling region in a clamping arm is shown,

[0044] Fig. 9 An embodiment of a coupling region in a clamping arm is shown,

[0045] Fig.10 An embodiment of a coupling region in a clamping arm is shown,

[0046] Fig.11 An embodiment of a coupling region in a clamping arm is shown,

[0047] Fig.12 An embodiment of a coupling region in a clamping arm is shown,

[0048] Fig.13 An embodiment of a coupling region in a clamping arm is shown,

[0049] Fig.14 shows an embodiment of a coupling region in a clamping arm,

[0050] Fig.15 An embodiment of a terminal clamp is shown,

[0051] Fig.16 An embodiment of a terminal clamp is shown,

[0052] Fig.17 An embodiment of a clamping spring is shown,

[0053] Fig.18 An embodiment of a terminal clamp is shown,

[0054] Fig.19 An embodiment of a terminal clip is shown, and

[0055] Fig. 20 An embodiment of a clamping spring is shown.

[0056] Figure 1 , 2 , 4, 5, 15, 16, 18 and 19 show different embodiments of the electrical terminal 10 in simplified partial views. The terminal 10 enables the conductor 20 (such as Figure 2 The conductor 20 is, for example, a cable having one or more wires made of conductive metal, which form the core of the cable. The core is covered with an insulating material. For electrical connection, the conductor 20 is clamped by a clamping spring 200. The spring force of the clamping spring 200 acts on the conductor 20 in a clamping manner. For example, the free end of the clamping spring 200 forms a clamping edge 240, which enters the material of the conductor 20 and thereby significantly increases the pull-out force.

[0057] The terminal 10 has a busbar 100 for making electrical contact with the conductor. Advantageously, the busbar 100 is made of a material having a better electrical conductivity than the clamping spring 200. Accordingly, the conductor 20 is electrically connected to the busbar 100. The busbar 100 also has further electrical connections (not shown) for further electrical contact, such as fork contacts, blade contacts or soldered connections. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Fig.15 , Fig.16 , Fig.18 and Fig.19 As an alternative to the illustrated embodiment, the busbar 100 and the clamping spring 200 can be formed integrally from one material, which simplifies production.

[0058] The terminal 10 also has a housing 300, which is shown in FIG. Figure 2The housing 300 contains the clamping spring 200. The housing 300 contains the busbar 100. Advantageously, the housing 300 is made of an insulating material, such as plastic or ceramic. In low-voltage applications, the housing is not mandatory. Figure 2 The housing 300 is shown only partially and in section. The housing 300 has a conductor guide channel 310 for guiding the conductor 20 to the clamping position K. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Fig.15 , Fig.16 , Fig.18 and Fig.19 , a terminal 10 is shown with exactly one busbar 100 and exactly one clamping spring 200. For multi-pole connection solutions, the terminal 10 has a corresponding number of busbars 100 and clamping springs 200, which can be insulated from one another, for example, by a housing 300 and / or can be electronically bridged by separate or integrated jumpers.

[0059] The clamping spring 200 has a clamping arm 210 and a contact arm 220 connected to the clamping arm 210. The clamping arm 210 and the contact arm 220 can be connected to each other by form fit, for example by cold rolling. Advantageously, the clamping arm 210 and the contact arm 220 of the clamping spring 200 are formed and bent in one piece from a material such as spring steel. For example, the clamping arm 210 and the contact arm 220 are connected to each other by a 180° fold. Figures 1 to 6 and Figures 15 to 20 In the embodiment of the present invention, the clamping spring 200 has a clamping arm 210 and a contact arm 220 as well as a spring bow 230 connecting the clamping arm 210 and the contact arm 220. The clamping spring 200 extends from the contact arm 220 via the spring bow 230 to the clamping arm 210. From the spring bow 230, the main extension direction EK of the clamping arm 210 extends to the clamping edge 240.

[0060] The clamping spring 200 is supported by the abutment arm 220 against the spring force introduced by the clamping arm 210. The support is advantageously carried out by the abutment arm 220 against the busbar 100. The figure shows that the busbar 100 has a base section 120 and a busbar wall 130 which is configured at an angle to the base section 120 and a support area 140 adjoining the busbar wall for supporting the abutment arm 200. The section of the abutment arm 220 extends along the support area 140. The base section 120 of the busbar 100 forms a surface for contacting the conductor 20. For example, a projection 110 can be provided from the surface of the base section 120 to define a contact area for the conductor 20. Of course, the busbar 100 can be shaped in another way and, for example, have an opening into which the abutment arm 220 is hung (not shown).

[0061] Figure 1 , Figure 2 , Figure 4 , Figure 5 , Fig.15 , Fig.16 , Fig.18 and Fig.19 In the embodiment, the terminal 10 has a pivotably mounted actuating lever 400 as an actuating element. The actuating lever 400 has a gripping region 410 for manually actuating the actuating lever 400. The actuating lever 400 is designed to pivot the clamping arm 210 from the closed position into the open position. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Fig.15 , Fig.16 , Fig.18 and Fig.19 The clamping arm 210 is shown in the closed position. In the open position, the clamping point K defined by the clamping arm 210 and the busbar 100 is open for the electrical conductor 20. In the closed position, by contrast, the clamping point K is not open. The clamping spring 200 is designed to press the previously introduced electrical conductor 20 against the busbar 100 by means of the clamping arm 210 in the closed position. For example, the clamping edge 240 at the free end of the clamping arm 210 presses the conductor 20, which in turn presses the busbar 100 and forms an electrical contact at the busbar 100.

[0062] In an exemplary embodiment, the actuating rod 400 is arranged outside the conductor entry region 320 so that the conductor 20 does not collide with the coupling elements 510, 510', 520, 520', 530, 530', 540 and / or parts of the actuating rod 400 during introduction. The width of the conductor guide channel 310 can thus be optimized for the largest possible conductor 20.

[0063] By means of manual actuation of the actuating lever 400, the clamping position K can be opened and closed by pivoting the clamping arm 210. If the actuating lever 400 is in the closed position, the clamping position K is also closed. If the actuating lever 400 is in the open position, the clamping arm 210 is pivoted and the clamping position K is opened. In the open position, the conductor 20 can be easily introduced into the terminal clamp 10 up to the clamping position K or moved out of the terminal clamp 10, because by actuating the actuating lever 400, the clamping edge 240 is moved away from its contact position on the busbar 100 or the contact point on the electrical conductor 20 by pivoting the clamping arm 210.

[0064] Furthermore, in the exemplary embodiment shown, the single-wire solid conductor 20 can be plugged directly, so that in the closed position the conductor 20 is guided through the conductor guide channel 310 and the clamping arms 210 of the clamping spring 200 are deflected by an additional advancing force so that the conductor 20 can be moved in until the stop.

[0065] The following explains in more detail Figures 1 to 20 Individual features and differences of the exemplary embodiments of the present invention are described in detail below. Different features of the exemplary embodiments can be combined with one another.

[0066] exist Figure 1 In the embodiment of the invention, the operating element is configured as a lever. The lever 400 can be manually gripped in the gripping area 410 and adjusted by a pivoting movement. The lever 400 has a pivot bearing 420 for support. A matching bearing of the lever 400 is not shown. For example, the lever can be supported in a housing or in a part of a busbar. It is also possible to support the lever 400 on the clamping spring 200. The two coupling elements 510, 510' are mechanically coupled to the lever 400 via bearings 431, 511. The coupling elements 510, 510' are configured in the form of an articulated rod. For example, the coupling elements 510, 510' are made of plastic or metal. For support, the operating element 400 has bearing elements 431 on both sides. Figure 1 In the embodiment of the present invention, the support element 431 is configured as a journal. Alternatively, the support element 431 can be configured as an eyelet, an elongated hole, etc. (not shown). The coupling elements 510, 510' have an associated mating support portion 511, such as an elongated hole. The coupling elements 510, 510' are rotatably and slidably supported relative to the operating element 400.

[0067] exist Figure 1 In the exemplary embodiment, the clamping spring 200 has a clamping arm 210. The clamping arm 210 has a coupling region 600 with a supporting edge 601. The coupling element 510 is supported at the supporting edge 601. The further coupling element 510' is also supported at the further supporting edge 601', such as Figure 3 The other supporting edge 601' is Figure 1 is not visible in the figure because it is covered by the clamping arm 210. Figure 1 2 shows that the clamping arm 210 has a width in the region of the clamping edge 240 which corresponds almost to the width of the base 120 of the busbar 100. In contrast, the coupling region 600 projects laterally beyond this width.

[0068] exist Figure 2 1 shows a terminal 10 with a housing 300. The housing 300 is shown in a greatly simplified cross-section. The housing 300 has a conductor guide channel 310, which guides the conductor 20 into a clamping position K when it is inserted in the conductor insertion direction LE. The conductor introduction area 320 is defined by the conductor guide channel 310, a section of the base area 120 of the busbar 100, the clamping arm 210 and, if necessary, further walls (not shown) of the housing 300.

[0069] The coupling element 510 has a support region 590. The support region 590 of the coupling element 510 surrounds the support edge 601. Figure 2 In the embodiment of the coupling element 510, the supporting area 590 has a bow 591. Figure 2 In the embodiment of the present invention, the bow 591 is constructed in the form of a hook 591. Figure 2 In the exemplary embodiment of , the lever 400 is pivoted for actuation, the coupling element 510 is displaced and exerts a tensile force on the clamping arm 210, since the coupling element 510 is located in the deflection direction of the clamping arm 210. The spring force acts counteracting the tensile force.

[0070] If pressure is to be exerted on the clamping arm 210, the coupling element 510 is arranged on the opposite side of the clamping arm 210 (not shown). The lever 400 is also supported at different positions and presses the coupling element in the direction of the clamping arm 210 (not shown).

[0071] exist Figure 3 In the embodiment of the invention, a clamping spring 200 is shown. The clamping spring 200 has a contact arm 220, a spring bow 230 connected to the contact arm 220, and a clamping arm 210 connected to the spring bow 230. The clamping arm 210 extends in its largest dimension in the main extension direction EK. The clamping arm 210 extends from the spring bow 230 to a clamping edge 240 at the free end of the clamping arm 210. The clamping arm 210 can be formed flat, for example. Figure 3 In the embodiment of the present invention, the clamping arm 210 further has a curved portion, so that the clamping edge 240 is steeper or more inclined relative to the conductor 20. Figure 3 Alternatively, the clamping spring 200 can have other shapes with multiple bows and / or width changes and / or bends. However, it is important that the clamping spring 200 has a clamping arm 210 with a clamping edge 240. The clamping edge 240 is, for example, configured to be straight, V-shaped or bow-shaped.

[0072] The clamping arm 210 has a coupling region 600 remote from the clamping edge 240. The coupling region 600 has a supporting edge 601. The supporting edge 601 is designed substantially perpendicular to the main extension direction EK of the clamping arm 210. The supporting edge 601 is designed to support the coupling element 510. Figure 3 In the embodiment of the present invention, the supporting edge 601 is configured to be substantially parallel to the clamping edge 240 .

[0073] exist Figure 3In the embodiment of the present invention, the two supporting edges 601, 601' are formed on the longitudinal sides of the clamping arm 210. The two supporting edges 601, 601' are formed to be mirror-symmetrical to each other. If the two coupling elements 510, 510' act evenly on the supporting edges 601, 601', the clamping arm 210 does not twist or only twists slightly during deflection.

[0074] Figure 4 , Figure 5 and Figure 6 The embodiment of shows the difference from the previous embodiment. Figure 4 and Figure 5 In each coupling element 520, 520', each coupling element 520, 520' is constructed in a different manner. Figures 4 to 6 In the embodiment shown in FIG. 6 , the coupling region 600 of the clamping arm is designed in a different manner.

[0075] Figure 4 The exemplary embodiment of FIG. 4 again shows two coupling elements 520 , 520 ′. The coupling elements 520 , 520 ′ are mounted on the actuating element 400 only so that they can rotate.

[0076] exist Figure 5 In the embodiment of the coupling region 600, a support edge 603 is formed by free cutting and bending 90° from the plane PK of the clamping arm 210. The second support edge is Figure 6 The clamping arm 210 is not visible behind the clamping arm 210. By bending, a recess 215, 215' is produced in each case in the clamping arm 210. Figure 6 In the exemplary embodiment of FIG. 6 , the support edge 603 is remote from the clamping arm 210. The support edge 603 and the recess 215, 215' are arranged remote from the conductor entry region in the main extension direction EK.

[0077] exist Figure 5 In the embodiment of the coupling element 510, the coupling element 510 has a bow section 592. The coupling region 600 is arranged with a supporting edge 603 for supporting in the bow section 592. The coupling element 520 has a hook-shaped bow 592 which at least partially surrounds the supporting edge 603. Figure 5 , in which the support edge 603 and the support area 590 of the coupling element 520 engage. Figure 5 In the embodiment of the present invention, when the conductor is inserted without first actuating the lever 400, the support region 590 of the coupling element 520 and the support edge 603 of the clamping arm 210 are disengaged when the conductor abuts against the clamping arm 210 and the clamping arm is deflected by the forward movement. Advantageously, the coupling element 520 is guided in a housing (not shown) so that when the lever 400 is actuated, the support region 590 of the coupling element 520 and the support edge 603 of the clamping arm 210 reengage after the idle travel. Thus, the clamping position K can be opened manually.

[0078] Figures 7 to 14 The various embodiments of the present invention each show a detail of a clamping arm 210 having a coupling region 600. Figures 7 to 14 In these embodiments, the coupling region 600 is configured in different ways. Figures 7 to 14 The embodiments can be combined with one another depending on the geometry of the terminal. Figures 7 to 14 In the exemplary embodiment of FIG. 6 , the coupling region 600 is formed only on one longitudinal side of the clamping arm 210 . However, the coupling region can alternatively be formed symmetrically or asymmetrically on both longitudinal sides of the clamping arm 210 .

[0079] exist Figure 7 In the embodiment of , the coupling region 600 is formed by material removal in such a way that a step is produced between a first region having a larger width B1 and a second region having a narrower width B2. Figure 7 In the embodiment of , this step just forms the support edge 601. Here, the support edge 601 is in the plane PK of the clamping arm 210.

[0080] exist Figure 8 In the embodiment of the present invention, the coupling region 600 is formed by a 180° bend. Here, the tongue 620 of the clamping arm 210 is cut and bent 180°. The outer radius of the bend forms the supporting edge 602. Here, the supporting edge 602 has a larger radius and is free of burrs, so that the coupling element can be better supported.

[0081] exist Fig. 9 In the exemplary embodiment of the present invention, the coupling region 600 is formed by a 90° bend. Here, the tongue 621 of the clamping arm 210 protrudes freely and is bent by 90°. The supporting edge 603 at the end of the tongue 621 protrudes from the plane PK of the clamping arm 210. The clamping edge 603 thus points away from the clamping arm 210 and enables a particularly reliable support of the coupling element.

[0082] exist Figures 7 to 9 In the exemplary embodiment, the supporting edges 601, 602, 603 are at least away from the clamping edge 240 of the clamping arm 210 along the main extension direction EK of the clamping arm 210. Fig.10 In the embodiment of FIG. 6 , the supporting edge 614 is spaced apart from the clamping edge 240 at a distance d2 perpendicular to the main extension direction EK. Fig.10 In the exemplary embodiment of the present invention, the support edge 614 and the clamping edge 240 are flush. As shown, the support edge 614 and the clamping edge 240 are separated from each other by a small recess in the clamping arm 210. However, this recess can also be omitted. Advantageously, the support edge 614 and the clamping edge 240 are spaced apart from each other both in the main extension direction EK and perpendicularly to the main extension direction EK ( Fig.10 not shown).

[0083] exist Fig.11 In the exemplary embodiment of FIG. 6 , a coupling region 600 is schematically shown with two supporting edges 604, 605. The coupling element can be supported on one or both supporting edges 604, 605. Fig.11 In the exemplary embodiment of FIG. 6 , the coupling region 600 is designed as a tongue 620 which protrudes perpendicularly to the main extension direction on the longitudinal side of the clamping arm 210 .

[0084] exist Fig.12 In the embodiment of the present invention, the coupling region 600 has four supporting edges 606, 607, 608 and 609. The coupling element (e.g., 510, Fig.12 606, 607, 608, 609. For example, the supporting region 590 of the coupling element is S-shaped and has two arcuate sections, into which the tongues of the coupling region 600 protrude to form the support. Each supporting edge 606, 607, 608, 609 is formed in the coupling region 600 by a step between a first region of the clamping arm 210 and a second region narrower than the first region.

[0085] Fig.13 In the exemplary embodiment of the present invention, the coupling region 600 is formed by a recess in the clamping arm 210. The recess is delimited by edges forming the supporting edges 610, 611. The supporting edges 610, 611 are formed in the plane PK of the clamping arm 210. The clamping arm 210 has a width B2 in the region of the recess that is narrower than the width B1 outside the coupling region 600.

[0086] Fig.14 In the exemplary embodiment of FIG. 6 , the supporting edge 612 is formed in the coupling region 600 by an opening 622 in the clamping arm 210 . Fig.14 In the embodiment of the present invention, the opening is rectangular so that two supporting edges 612, 613 can be used for supporting the coupling element. The supporting edge 612 is spaced apart from the clamping edge 240 of the clamping arm 210 by a distance d1 only along the main extension direction EK.

[0087] exist Fig.15 An embodiment of a terminal 10 is shown in FIG. The coupling element 530 has a bearing opening 532 into which the coupling region 600 projects with the bearing edges 604 , 605 . The coupling region 600 is, for example, Fig.11 In the embodiment of Fig.15 As shown in FIG. 5 , the two coupling elements 530 , 530 ′ are arranged symmetrically. Accordingly, the coupling region 600 can also be constructed symmetrically. Fig.17 In the embodiment of FIG. 6 , the coupling region 600 has mirror-symmetrical supporting edges 604 , 605 , 604 ′, 605 ′.

[0088] exist Fig.16In the exemplary embodiment of FIG. 5 , the coupling element 530 has, in addition to the bearing opening 532 , a further bearing opening 531 for the bearing element 431 of the actuating element 400 . Fig.16 In the embodiment of the present invention, the operating element 400 has a bearing element 431 for mechanically coupling with the coupling element 530. The bearing element 431 is configured, for example, as a bearing journal 431. Alternatively, it is also possible that the operating element 400 has a bearing opening and the coupling element 530 has a bearing journal (not shown). Fig.16 In the embodiment of the coupling element 530 rigidly couples the pivoting movement of the operating element 400 and the deflecting movement of the clamping arm 210. In order to allow the clamping arm 210 to deflect even when the lever 400 is not actuated, one of the bearing openings 531, 532 can be configured as a long hole, for example.

[0089] exist Fig.18 In the embodiment of the present invention, the coupling element 540 is designed as a bracket 540. The bracket 540 surrounds the clamping arm 210. The bracket is rotatably supported on both sides of the lever 400. The bracket 540 extends from one side of the lever 400 around the clamping arm 210 to the opposite side of the lever 400. The bracket 540 rests on the supporting edge 601 for support. Fig.19 In the embodiment of FIG. 5 , the bracket 540 cannot move in the direction of the spring bow 230 in the support area 590 . Accordingly, the bracket 540 is fixed in position by being supported on the support edge 601 of the clamping arm 210 in the main extension direction EK of the clamping arm 210 . Fig. 20 In the embodiment of the present invention, the coupling region 600 of the clamping arm 210 has two supporting edges 601, 601', Fig.19 The bow frame 540 in the embodiment of the present invention is supported on the supporting edge. If the lever 400 is operated, the tension F in the bow frame 540 P Causes the clamp arm 210 to resist the spring force F S If a solid conductor is inserted without operating the lever 400, the clamping arm 210 is deflected by the thrust force and the conductor is clamped in the clamping position K. If, on the other hand, a stranded wire as a conductor is to be clamped, the lever 400 is operated before introduction and the clamping arm 210 is moved to the open position and the stranded wire is then introduced into the terminal clamp 10. The coupling region 600 is offset along the main extension direction EK of the clamping arm 210 and is constructed outside the conductor entry region. In addition, the coupling region 600 is offset perpendicular to the main extension direction EK of the clamping arm 210 and is constructed outside the conductor entry region 320. In both cases, the risk of the introduced stranded wire colliding with the supporting edge 601 can be advantageously reduced, making it less likely that the stranded wires will get tangled or hooked.

[0090] After the stranded or solid conductor has been introduced, the lever 400 is closed and the conductor is clamped. To release the conductor, the lever 400 is actuated again and the clamping position K is opened. During the pivoting movement of the lever 400, the bracket 540 contacts the supporting edge 601 again and deflects the clamping arm 210. The conductor is free and can be removed from the terminal clamp 10.

[0091] List of reference numerals:

[0092] 10 Terminal clamp

[0093] 20 Conductors

[0094] 100 Bus

[0095] 110 protrusion

[0096] 120 Bottom area

[0097] 130 Busbar wall

[0098] 140 Support area

[0099] 200 Clamping spring

[0100] 210 Clamping arm

[0101] 215, 215' recess

[0102] 220 Support arm 230 Spring bow, spring root 240 Clamping edge

[0103] 300 Shell

[0104] 310 Conductor guide channel

[0105] 320 Conductor entry area

[0106] 400 Control elements

[0107] 410 grip area

[0108] 420 pivot support

[0109] 431 Supporting elements, supporting journals 510, 510', 520, 520', 530, 530', 540 coupling element

[0110] 511, 521, 531, 541, 542 matching support parts

[0111] 532 Rotating support

[0112] 590 Support area

[0113] 591, 592 Bow, hook

[0114] 600 Coupling area 601、601'、602、603、604、605、606、 Support edge 607, 608, 609, 610, 611, 612, 613, 614

[0116] 620, 621 tongue

[0117] 622 Window Department EK Main extension direction

[0118] F P pull

[0119] F S Spring force

[0120] K Clamping position

[0121] LE conductor introduction direction

[0122] PK plane

Claims

1. An electrical connection clamp (10), - having a clamping spring (200) for clamping the electrical conductor, - having an operating element (400), - a coupling element (520) for mechanical coupling of the actuating element (400) and the clamping spring (200), -in, The clamping spring (200) has a clamping arm (210) with a main extension direction (EK), wherein the clamping arm has a clamping edge (240) for clamping an electrical conductor. wherein the clamping arm (210) has a coupling region (600) which is spaced apart from the clamping edge (240), wherein the coupling region (600) has a supporting edge (603) substantially perpendicular to a main extension direction (EK) of the clamping arm (210) for supporting the coupling element (520), - wherein the supporting edge (603) is constituted by a curved portion, wherein the supporting edge is defined by an outer area of ​​the curved portion, -Wherein, the coupling element (520) has a supporting area (590), wherein the supporting area (590) of the coupling element (520) abuts against a supporting edge (603) of the clamping arm (210), and / or wherein the supporting area (590) of the coupling element (520) at least partially surrounds the supporting edge (603) of the clamping arm (210).

2. The electrical terminal (10) according to claim 1, - wherein the outer region is burr-free.

3. The electrical terminal (10) according to claim 1, - wherein the outer region has a larger radius.

4. The electrical terminal (10) according to claim 1, In this case, the supporting edge (603) is formed by a bent portion of a cut-out tongue (620) of the clamping arm (210).

5. The electrical terminal (10) according to claim 1, wherein the clamping arm (210) is bent at an angle between 90° and 180° in the coupling region (600) to form the outer region in order to form a supporting edge.

6. The electrical terminal (10) according to claim 1, -in, The clamping arm (210) of the clamping spring (200) has a first coupling region and a second coupling region, wherein the first coupling region has a first supporting edge (601, 604) and the second coupling region has a second supporting edge (601', 604'), wherein the first coupling region and the second coupling region are spaced apart from one another at least transversely to a main extension direction (EK) of the clamping arm (210).

7. The electrical terminal (10) according to claim 6, wherein the first supporting edge (601, 604, 605) and the second supporting edge (601', 604', 605') are formed on a longitudinal side of the clamping arm (210) and are mirror-symmetrical to one another.

8. The electrical terminal (10) according to claim 1, -in, The coupling element and the operating element are composed of multiple parts.

9. The electrical terminal (10) according to claim 1, -in, The coupling element (520) is mechanically coupled to the operating element (400) via the support portion (431, 511).

10. The electrical terminal (10) according to claim 1, -in, The coupling element (520) is made of metal.

11. The electrical terminal (10) according to claim 1, -in, The housing has a guide in which the coupling element is guided.

12. The electrical terminal (10) according to claim 1, -in, During the pivoting movement of the actuating element (400), the coupling element (520) contacts the supporting edge (603) and thereby deflects the clamping arm (210).

13. The electrical terminal (10) according to claim 1, -in, In order to pivot the clamping arm (210), a force is exerted on the supporting edge (603) via the coupling element (520).

14. The electrical terminal (10) according to claim 1, wherein the coupling region (600) is formed as a tongue (620) protruding perpendicularly to the main extension direction (EK) on a longitudinal side of the clamping arm (210).

15. The electrical terminal (10) according to claim 1, wherein the coupling region (600) is spaced apart from the clamping edge (240) along a main extension direction (EK) of the clamping arm (210), and / or -in, The coupling region (600) is spaced apart from the clamping edge (240) perpendicularly to a main extension direction (EK) of the clamping arm (210).

16. The electrical terminal (10) according to claim 1, - wherein the coupling element (520) and the clamping spring (200) are not designed in one piece.

17. The electrical terminal (10) according to claim 1, - wherein the coupling element (520) and the clamping spring (200) are designed to be movable relative to one another.

18. The electrical terminal (10) according to claim 1, wherein the coupling element (520) is configured to transmit a tensile force (F) of the clamping arm (210) for deflecting the clamping spring (200) P ), and / or -in, The coupling element (520) is configured to transmit a pressure force for deflecting a clamping arm (210) of a clamping spring (200).

19. The electrical terminal (10) according to claim 1, -in, The supporting edge (603) in the coupling region (600) is formed by a step between a first region of the clamping arm (210) and a second region which is narrower than the first region.

20. The electrical terminal (10) according to claim 1, - wherein the supporting edge (603) protrudes from the plane (PK) of the clamping arm (210).

21. The electrical terminal (10) according to claim 1, - wherein the supporting edge (603) is formed in the plane (PK) of the clamping arm (210).

22. The electrical terminal (10) according to claim 1, -in, The coupling element (520) has bearing openings (531, 532) into which the coupling region (600) projects with a bearing edge (603).

23. The electrical terminal (10) according to claim 1, - wherein the coupling element (520) has a bow section (591) in which the coupling region (600) is arranged with a supporting edge (603) for support.

24. The electrical terminal (10) according to claim 1, - wherein the coupling element (520) has a bracket (540), wherein The bracket (540) rests on the supporting edge (603).

25. The electrical terminal (10) according to claim 1, - having a housing (300) in which the clamping spring (200) is accommodated, -in, The conductor entry region (320) is defined by a conductor entry channel (310) formed in the housing and which guides the electrical conductor to a clamping point (K) formed in the region of the clamping edge (240).

26. The electrical terminal (10) according to claim 25, -in, The coupling region (600) is designed to be offset in a main extension direction (EK) of the clamping arm (210) outside the conductor entry region (320), and / or wherein the coupling region (600) is designed to be offset perpendicularly to a main extension direction (EK) of the clamping arm (210) outside the conductor entry region (320).

27. The electrical terminal (10) according to one of the preceding claims, - wherein the actuating element (400) is designed as a lever or a push piece.

28. The electrical terminal (10) according to claim 1, wherein the operating element (400) has a gripping region (410) for manual operation or an interface for an operating tool.

29. The electrical terminal (10) according to any one of the preceding claims, - wherein the supporting edge (603) is designed to be substantially parallel to the clamping edge (240).

30. The electrical terminal (10) according to claim 1, A busbar (100) is provided, the clamping spring (200) pressing an electrical conductor against the busbar (100) to form an electrical contact.

31. The electrical terminal (10) according to claim 1, -in, The clamping spring (200) is supported by means of a contact arm (220) against a spring force introduced by the clamping arm (210), the support being effected by the contact arm (220) being in contact with the busbar (100) or the housing (300).

32. The electrical terminal (10) according to claim 1, The busbar (100) has a base region (120), a busbar wall (130) formed at an angle to the base region (120), and a busbar support region (140) adjoining the busbar wall for supporting abutment arms (220) of a clamping spring (200).

33. The electrical terminal (10) according to claim 1, in, The coupling element (520) is configured to mechanically couple the pivoting movement of the operating element (400) to the deflecting movement of the clamping arm (210).

34. The electrical terminal (10) according to any one of the preceding claims, -in, The coupling element (520) and the clamping spring (200) are designed to be rotatable relative to one another and / or translatably relative to one another.

35. The electrical terminal (10) according to claim 1, wherein the actuating element (400) designed as a lever is rotatably mounted in the housing (300).

36. An electrical connection clamp (10) - having a clamping spring (200) for clamping the electrical conductor, - having an operating element (400), - a coupling element (520) for mechanical coupling of the actuating element (400) and the clamping spring (200), -in, The clamping spring (200) has a clamping arm (210) with a main extension direction (EK), wherein the clamping arm has a clamping edge (240) for clamping an electrical conductor. wherein the clamping arm (210) has a coupling region (600) which is spaced apart from the clamping edge (240), - wherein the coupling region (600) is formed by material removal, wherein the coupling region (600) has a supporting edge (603) substantially perpendicular to a main extension direction (EK) of the clamping arm (210) for supporting the coupling element (520), -Wherein, the coupling element (520) has a supporting area (590), wherein the supporting area (590) of the coupling element (520) abuts against a supporting edge (603) of the clamping arm (210), and / or wherein the supporting area (590) of the coupling element (520) at least partially surrounds the supporting edge (603) of the clamping arm (210).

Images