Spring force clamping joint

Abstract

The invention relates to a spring-loaded clamping connection (1) for connecting electrical conductors (2), having a busbar (100) for electrically contacting the conductors (2), having a clamping spring (200), the clamping spring (200) having a clamping arm (210) and a contact arm (220) connected to the clamping arm (210), having a rotatably mounted actuating element (400), the invention relates to an operating element (400) for displacing a clamping arm (210) from a closed position (GS) into an open position (OS), comprising a mechanical first coupling element (530, 535, 540, 550) for mechanically coupling a rotational movement of the operating element (400) to the displaced clamping arm (210).

Description

[0001] This application is a divisional application of the original invention application with an application date of March 12, 2020, application number 202010169509.4 and invention name “Spring force clamping joint”. Technical Field

[0002] The invention relates to a spring force clamping joint. Background Art

[0003] Spring force clamping joints, known as terminal clamps, are known, for example, from the document WO 2018 / 010893 A1. The terminal clamp for connecting an electrical conductor has a housing, a current bar arranged in the housing, a clamping spring arranged in the housing, and a rotatably supported actuating lever. The clamping arm of the clamping spring has an actuating plate, which is arranged so that pressure can be applied from the actuating lever to the actuating plate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a spring force clamping joint which is as improved as possible.

[0005] The above-mentioned technical problem is solved by the technical features of claim 1. Advantageous further developments are the subject matter of the dependent claims.

[0006] Accordingly, a spring force clamping terminal is provided for connecting an electrical conductor.

[0007] The spring force clamping terminal has busbars (or conductor rails) for electrical contacting of the conductors.

[0008] The spring-force clamping connection has a clamping spring, wherein the clamping spring has a clamping arm and a contact arm connected to the clamping arm.

[0009] The spring-force clamping connection has a rotatably mounted actuating element which serves to deflect the clamping arm from a closed position into an open position.

[0010] The spring force clamping connection has a first mechanical coupling element which serves to mechanically couple the rotational movement of the actuating element to the deflection movement of the clamping arm.

[0011] According to an advantageous improved design, the abutment arm has an opening. Advantageously, the first mechanical coupling element passes through the opening in the abutment arm. Alternatively, the first mechanical coupling element is guided past the side of the abutment arm, or the first mechanical coupling element has an opening through which the abutment arm passes.

[0012] According to an advantageous further development, the operating element is designed as an operating lever for manual operation. Alternatively, it is possible that the operating element is designed with an interface for an operating tool.

[0013] According to an advantageous development, the opening in the contact arm of the clamping spring is closed on the circumferential side.

[0014] According to an advantageous further development, the opening is formed in a central region over the width of the contact arm. The first mechanical coupling element passes through the opening in the central region.

[0015] According to an advantageous development, the opening extends from the contact arm through the spring arch into the clamping arm.

[0016] According to an advantageous development, the opening has dimensions that allow a movement of the first mechanical coupling element within the plane of extension of the contact arm and / or perpendicularly to the plane of extension of the contact arm.

[0017] According to advantageous improved design, the first mechanical coupling element is designed to be integral with the clamping spring. For example, this integrity is constituted by material fit or form fit between the first mechanical coupling element and the clamping spring.

[0018] According to an advantageous improved design, the first mechanical coupling element is formed in one piece with the clamping arm. For example, the first mechanical coupling element and the clamping arm of the clamping spring are formed and bent in one piece from spring steel.

[0019] According to an advantageous development, the first mechanical coupling element is cut out of a central region of the clamping arm and is bent.

[0020] According to an advantageous development, the first mechanical coupling element is designed integrally with the actuating element.

[0021] According to an advantageous development, the first mechanical coupling element is designed as a separate element which is mounted on the actuating element and / or the clamping arm for the mechanical coupling.

[0022] Another aspect of the invention is a spring force clamping terminal for connecting electrical conductors. The spring force clamping terminal has a busbar for electrical contacting of the conductors.

[0023] The spring-force clamping connection has a clamping spring, wherein the clamping spring has a clamping arm and a contact arm connected to the clamping arm.

[0024] The spring-force clamping connection has a rotatably mounted actuating element which serves to deflect the clamping arm from a closed position into an open position.

[0025] The spring force clamping connection has a first mechanical coupling element and a second mechanical coupling element, which serve for mechanically coupling the rotational movement of the actuating element to the deflection movement of the clamping arm.

[0026] According to an advantageous improved design, the abutment arm has a first recess and a second recess. Advantageously, the first mechanical coupling element is arranged inside the first recess. Advantageously, the second mechanical coupling element is arranged inside the second recess. Alternatively, the first mechanical coupling element and the second mechanical coupling element are guided past the side of the abutment arm.

[0027] According to an advantageous development, the first mechanical coupling element and / or the second mechanical coupling element are formed integrally with the clamping arm.

[0028] According to an advantageous development, the first mechanical coupling element and / or the second mechanical coupling element is / are designed integrally with the actuating element or as a separate element.

[0029] According to an advantageous development, the actuating element has at least one bearing device which serves to support the first mechanical coupling element and / or the second mechanical coupling element.

[0030] According to an advantageous development, the bearing device is a bracket or a (linear) sliding bearing.

[0031] According to an advantageous development, the first mechanical coupling element and / or the second mechanical coupling element has at least one bearing device for supporting the actuating element.

[0032] Another aspect of the present invention provides a spring force clamping connector for connecting electrical conductors.

[0033] The spring force clamping terminal has busbars for electrical contacting of the conductors.

[0034] The spring force clamping connection has a clamping spring, wherein the clamping spring has a clamping arm.

[0035] The spring force clamping connection has a rotatably mounted actuating element for a rotational movement between an open position and a closed position.

[0036] The actuating element is designed to deflect the clamping arm.

[0037] The actuating element has a first contour which is mechanically coupled to the clamping arm via at least a part of the rotational movement of the actuating element for the deflection movement.

[0038] According to an advantageous improved design, the spring force clamping connection has a housing. According to an advantageous improved design, the actuating element has a second contour, which is mechanically coupled to the abutment arm and / or to the busbar and / or to the housing via at least a part of the rotational movement of the actuating element for the deflection movement.

[0039] According to an advantageous development, the actuating element is mounted such that a first part of the deflection is brought about by the first contour and a second part of the deflection is brought about by the second contour.

[0040] According to an advantageous development, the first contour is designed to be eccentric at least in sections.

[0041] According to an advantageous development, the second contour is designed to be eccentric at least in sections.

[0042] According to an advantageous refinement, a first part of the deflection is caused by a substantially rotational movement of the actuating element. According to an advantageous refinement, a second part of the deflection is caused by a substantially translational movement of the actuating element superimposed on the rotational movement.

[0043] According to an advantageous development, the second contour is an outer contour of the actuating element.

[0044] According to an advantageous development, the second contour is an inner contour of the actuating element.

[0045] According to an advantageous further development, the second contour is spaced apart from the first contour at least in a radial direction relative to the instantaneous center of the actuating element.

[0046] According to an advantageous development, the second contour is spaced apart from the first contour at least in a circumferential direction around the instantaneous center of the actuating element.

[0047] According to an advantageous development, the clamping arm has a first mechanical coupling element.

[0048] According to an advantageous development, the first contour is mechanically coupled to the first mechanical coupling element at least via the part of the rotational movement of the actuating element for the deflection of the clamping arm.

[0049] According to an advantageous development, for the mechanical coupling, the first contour exerts a pressure force on the first mechanical coupling element, which pressure force causes a tensile force in the first mechanical coupling element for deflecting the clamping arm.

[0050] According to one aspect of the invention, a spring force clamping joint is provided for connecting an electrical conductor. The spring force clamping joint has a busbar for electrical contacting of the conductor. The spring force clamping joint has a clamping spring, which has at least one clamping arm. The spring force clamping joint has a rotatably mounted actuating element, which is used for deflecting the clamping arm. The spring force clamping joint has a first mechanical coupling element, which is used for mechanical coupling of the rotational movement of the actuating element with the deflection of the clamping arm.

[0051] Indefinite article is not understood as a specific quantity in the specification. Therefore, an electric conductor is understood as at least one electric conductor, so that a spring force clamping joint can connect just one, two or more electric conductors to the busbar. The busbar is understood as just one, two or more busbars. A clamping spring is understood as just one, two or more clamping springs. An operating element is understood as just one, two or more operating elements. The busbar can also be called a current rod. The busbar is optimized for electrical contact and electrical conductivity and has, for example, copper or a copper alloy. The clamping spring is suitable for clamping the electric conductor. Advantageously, the clamping spring is formed and bent by spring steel. Advantageously, the clamping spring has just one clamping arm for clamping the attached electric conductor, so that the only conductor is not clamped by two or more clamping arms of the clamping spring. The abutment arm of the clamping spring is designed to abut on the fixed area of ​​the spring force clamping joint to withstand the spring force of the reverse action. For example, the abutment arm abuts on the busbar and / or the housing. Advantageously, the connection is designed to be self-supporting through the clamping spring and the busbar. The rest arm is directly or indirectly connected to the clamping arm. For example, the rest arm is connected to the clamping arm through a spring arch. Advantageously, the rest arm, the spring arch and the clamping arm are integrally formed and bent or alternatively the rest arm and the clamping arm are fixed to each other. The operating element is designed to be manipulable and can be operated, for example, manually or with the aid of a manipulating tool. The spring force clamping joint has a supporting device and a matching supporting device for supporting the operating element for rotational movement. The matching supporting device for the operating element is designed, for example, in a housing and / or a busbar. A mechanical coupling element is used to convert the rotational movement of the operating element into an offset of the clamping arm. For example, the first / second coupling element has one or more articulated joints and / or one or more rigid or at least partially flexible connecting rods and / or one or more supporting devices, etc. The improved design and technical features in the claims and in the specification, especially with respect to the design scheme described in the drawings, can be integrated into the spring force clamping joint individually or in combination. Here, the present invention is not limited to the specific design scheme shown in the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The design scheme of the present invention is further described below with reference to the accompanying drawings. In the accompanying drawings:

[0053] Figure 1 An embodiment of a spring terminal is shown;

[0054] Figure 2 Another embodiment of a spring terminal is shown;

[0055] Figure 3 Another embodiment of a spring terminal is shown;

[0056] Figure 4 Another embodiment of a spring terminal is shown;

[0057] Figure 5 Another embodiment of a spring terminal is shown;

[0058] Figure 6 Another embodiment of a spring terminal is shown;

[0059] Figure 7 Another embodiment of a spring terminal is shown. DETAILED DESCRIPTION

[0060] Figures 1 to 7 2 shows different embodiments of spring force clamping joints in partial views. The spring force clamping joint 1 enables the electrical connection of conductors (not shown). The conductor is, for example, a cable with one or more wires made of conductive metal, which form the cable core of the cable. The cable core is wrapped with insulating material. For the electrical connection, the conductor is clamped by a clamping spring 200. The spring force of the clamping spring 200 acts on the conductor in a clamping manner. For example, the free end 211 of the clamping spring 200 forms a clamping edge 211, which is pressed into the material of the conductor and thereby significantly increases the extraction force.

[0061] The spring force clamping terminal 1 has a busbar 100 for electrical contacting of the conductor. The busbar 100 is advantageously made of a material having a better electrical conductivity than the clamping spring 200. Accordingly, the conductor is electrically connected to the busbar 100. The busbar 100 also has further electrical connections (not shown), for example fork contacts, for further electrical connections.

[0062] The spring force clamping terminal 1 also has a housing 300 in which the busbar 100 and the clamping spring 200 are accommodated. Advantageously, the housing is made of an insulating material, such as plastic or ceramic. The housing is not mandatory in low-voltage applications. In the accompanying drawings, the housing 300 is only partially and cut away. The housing 300 has a conductor guide channel for guiding the conductor to the clamping position. A spring force clamping terminal with exactly one busbar 100 and exactly one clamping spring 200 is shown in the accompanying drawings. For multi-pole connection possibilities, the spring force clamping terminal 1 has a corresponding number of busbars 100 and clamping springs 200, which can be insulated from each other by the housing 300.

[0063] 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 6In the design shown in FIG. 2 , the clamping spring 200 has a clamping arm 210 and a contact arm 220 and a spring arch 230 connecting the clamping arm 210 and the contact arm 220 . The clamping spring 200 extends from the clamping arm 210 through the spring arch 230 to the contact arm 220 .

[0064] The clamping spring 200 is supported by the contact arm 220 against the spring force introduced by the clamping arm 210. The support is advantageously carried out by the contact arm 220 resting on the busbar 100. As shown in the figure, the busbar 100 has a base area 110 and a busbar wall 120 which is designed at an angle to the base section 110, wherein a section 228 of the contact arm 220 extends along the busbar wall 120 and a further section 229 of the contact arm 220 extends along the base area 110. The base area 110 of the busbar 100 forms a surface for contacting the conductor, wherein the further section 229 of the contact arm 220 is arranged opposite to the surface. In the case shown, the busbar 100 passes through the opening 227 of the contact arm 220. Of course, the busbar 100 can also be shaped in another way and, for example, have an opening in which the contact arm 220 is suspended (not shown).

[0065] The spring force clamping joint has a rotatably supported operating lever 400 as an operating element 400. The operating lever 400 has a gripping area 490 for manually operating the operating lever 400. The operating lever 400 is designed to deflect the clamping arm 210 from the closed position to the open position. In the open position, the clamping position determined by the clamping arm and the busbar is opened for the electrical conductor. In the closed position, the clamping position is not opened on the contrary. The clamping spring 200 is designed to press the previously introduced electrical conductor onto the busbar 100 by means of the clamping arm 210 in the closed position. For example, the clamping edge 211 presses the conductor at the free end, and the conductor then presses the busbar 100, and forms an electrical contact at the busbar 100.

[0066] In the embodiment of the figures, the operating rod 400 is arranged outside the conductor guiding area so that the conductor does not collide with parts of the operating rod when introduced. Therefore, the width of the conductor guiding channel 310 is optimized for the largest possible conductor.

[0067] By means of manual manipulation of the operating lever 400, the clamping position can be opened or closed by deflecting the clamping arm 210. If the operating lever 400 is in the closed position GS, Figures 5 to 7 As shown in , the clamping position is also closed. If the operating lever 400 is in the open position OS, as shown in Figures 1 to 4, the clamping arm 210 is deflected and the clamping position is opened. In the open position OS, the conductor can be easily introduced into the clamping position or released therefrom, because by actuating the actuating lever 400, the clamping edge 211 is moved forward from the contact position of the clamping edge on the busbar 100 or on the contact point on the electrical conductor by the deflection of the clamping arm 210.

[0068] Furthermore, in the embodiment of the figures, a single-core solid conductor can be directly inserted, so that in the closed position GS the conductor is guided through the conductor guide channel 310 and the clamping arms 210 of the clamping spring 200 are deflected by the additional thrust so that the conductor can be inserted up to the stop.

[0069] Then further elaborate on Figures 1 to 7 Individual features and differences in the exemplary embodiments of the present invention are described below. Different features of the exemplary embodiments may be combined with one another.

[0070] Figure 1 The spring force clamping joint 1 of the embodiment of the present invention has a first mechanical coupling element 530 for mechanically coupling the rotational movement of the actuating lever 400 with the deflection of the clamping arm 210 of the clamping spring 200. The actuating lever 400 is partially accommodated in the housing 300, wherein the gripping area 490 of the actuating lever 400 protrudes through the housing opening at the top side of the housing 300. The support device 450 for supporting the actuating lever 400 is provided at Figure 1 In the embodiment of the present invention, it is arranged inside the housing 300. Figure 1 In the embodiment of the present invention, the lever 400 is supported so that the instantaneous center (or base point) is fixed and thus the axis of rotation is fixed. For example, the lever 400 has a cylindrical opening, into which a cylindrical pin (not shown) of the housing 300 is inserted to form a rotary sliding bearing. Alternatively, the lever 300 can be supported by means of the busbar 100 or by means of the abutment arm 220 of the clamping spring 200 (not shown).

[0071] exist Figure 1 In the embodiment of the present invention, the operating lever 400 has an operating region 410, which is segmentally shaped in the form of an eccentric in the radial direction. Figure 1 In the embodiment of the present invention, it can even be called a tenon shape or a protruding nose shape. Here, the operating area 410 cooperates with the first coupling element 530 of the machinery so that the rotational movement of the operating lever 400 is mechanically coupled with the offset of the clamping arm 210.

[0072] The operating area 410 is Figure 1The width of the embodiment of the housing 300 is equal to the width of the space between the two walls of the housing 300. The first mechanical coupling element 530 can thus be actuated in the entire spatial width via the actuation region 410. It is also possible that the actuation region 410 has a guide device for guiding the movement of the first mechanical coupling element 530.

[0073] exist Figure 1 4 shows the operating lever 400 in the open position OS. Correspondingly, the swiveled clamping arm 210 is in the open position OS. The operating region 410 of the operating lever 400 presses on the first mechanical coupling element 530. This generates a tensile force in the first mechanical coupling element 530, which pulls on the clamping arm 210 and deflects the clamping arm into the open position OS.

[0074] exist Figure 1 In the embodiment of the invention, the contact arm 220 has an opening 290. Here, the first mechanical coupling element 530 passes through the opening 290 in the contact arm 220. The opening 290 is designed in a central area relative to the width of the contact arm 220. The first mechanical coupling element 530 passes through the opening 290 in this central area. Figure 1 In the embodiment of the invention, the opening 290 is designed in the region of the contact arm 220, which extends substantially in the same direction as the clamping arm 210 and, for example, is approximately parallel to the clamping arm. The actuating lever 400 can thus be designed on one side of the contact arm 220, whereas the clamping position is designed on the opposite side of the contact arm 220.

[0075] The opening 290 in the abutment arm 220 is Figure 1 In the embodiment of the present invention, the opening 290 is designed to be closed all around. Here, the opening 290 is defined transversely to the main extension direction by the first and second connecting pieces 221, 222 of the contact arm 220. For example, the opening 290 in the contact arm 220 is formed by a punching process. Figure 1 The embodiment in can realize a particularly narrow spring force clamping joint 1. The contact arms 220 of the clamping spring 200 can extend in width to the wall of the housing 300, since no movable elements have to be guided laterally on the contact arms 220.

[0076] exist Figure 1 In the exemplary embodiment, the first mechanical coupling element 530 and the clamping arm 210 of the clamping spring 200 are integrally formed and bent. Here, the first mechanical coupling element 530 is connected to the clamping arm 210 laterally relative to the main extension direction of the clamping arm 210, is bent there by approximately 180° and then by approximately 90° in the direction of the actuating lever 400, and passes through the opening 290 in the contact arm 220.

[0077] The opening 290 in the contact arm 220 is dimensioned in this case so that the first mechanical coupling element 530 can move within the opening 290. Figure 1 In the exemplary embodiment, the movement of the mechanical first coupling element 530 inside the opening 290 can be both along the main extension direction of the opening 290 and transversely to the main extension direction of the opening 290 .

[0078] exist Figure 2 In the embodiment of FIG. 4 , the operating lever 400 has an operating region 410 and a device 419 for supporting the first coupling element 540. For example, an eyelet 419 is provided in the operating region 410 as a supporting device. Figure 2 In the embodiment of the present invention, the means 419 for supporting are only schematically shown. Alternatively, even hinges or the like can be used.

[0079] exist Figure 2 In the embodiment, the first mechanical coupling element 540 is designed as a separate coupling element 540, which is supported on the operating lever 400 and the clamping arm 220 for mechanical coupling. For this purpose, the first mechanical coupling element 540 has supporting means 541, 542, 543. Here, the supporting means 541, 542, 543 are Figure 2 The embodiment of the embodiment of FIG. is shown greatly simplified. Alternatively, a supporting means such as a film hinge, a bracket, a swivel mount or the like can be provided. Figure 2 In the embodiment shown, when the clamp arm 210 is displaced due to advancement of the conductor (not shown), the separate coupling element 540 moves therewith.

[0080] exist Figure 2 4 shows the operating lever 400 in the open position OS. Correspondingly, the clamping arm 210 is offset in the open position OS. During the opening movement, the operating region 410 of the operating lever 400 presses against the separate mechanical first coupling element 540. This generates a tensile force in the mechanical first coupling element 540, which pulls on the clamping arm 210 and offsets the clamping arm into the open position OS. The separate mechanical first coupling element 540 can be made of plastic or metal, for example, in a flexurally rigid or elastic manner. The separate mechanical first coupling element 540 is in Figure 2 In the embodiment of the clamping spring 200, the clamping arm 210 is supported in the opening 209. By means of the separate first coupling element 540, the mechanical properties of the first coupling element 540 can be optimized separately from the mechanical properties of the clamping spring 200 and the actuating lever 400.

[0081] exist Figure 3 In the embodiment of Figure 2In contrast to the embodiment of the embodiment of the present invention, the opening 291 in the contact arm 220 extends through the spring arch 230 into the clamping arm 210. Here, the first mechanical coupling element 535 is also arranged in the opening 291 in the center region over the width of the opening 291 of the contact arm 220. Figure 3 In the embodiment of , the first mechanical coupling element 535 is formed integrally with the clamping spring 200 in that the first mechanical coupling element 535 is punched out and bent in a central region over the width of the clamping spring so that the first mechanical coupling element 535 passes through the opening 291 produced by the punching process and is supported in the operating lever 400 by a support element 531 for operation. Here, the opening 291 is only slightly wider than the first mechanical coupling element 535 due to the punching process, so that the mechanical coupling element 535 can advantageously move freely within the opening 291. Figure 3 In the exemplary embodiment of the present invention, the width of the clamping spring 200 can be maximized inside the inner wall of the housing 300. In this exemplary embodiment, no region is bent inwards from the edge of the clamping spring 200. It is not even necessary to provide the contact arm 220 and / or the clamping arm 210 with a recess for an element to pass by one arm 210, 220.

[0082] Figure 4 The spring force clamping joint 4 of the embodiment of the present invention has a first mechanical coupling element 510 and a second mechanical coupling element 520, which are used to mechanically couple the rotational movement of the operating lever 400 with the deflection of the clamping arm 210 of the clamping spring 200. The operating lever 400 is partially accommodated in the housing 300, wherein the gripping area 490 of the operating lever 400 protrudes through the housing opening at the top side of the housing 300. The support device for supporting the operating lever 400 is provided at Figure 4 In the embodiment of the present invention, it is arranged inside the housing 300. Figure 4 In the embodiment of the present invention, the lever 400 is supported so that the instantaneous center is fixed and thus the axis of rotation is fixed. In the embodiment, the lever 400 has a cylindrical tenon 451, which is inserted into a cylindrical opening (not shown) of the housing 300 to form a rotary sliding bearing. Alternatively, the lever 300 can be supported by means of the busbar 100 or by means of the abutment arm 220 of the clamping spring 200 (not shown).

[0083] exist Figure 4 In the embodiment of the present invention, the operating lever 400 has an operating region 410, which is segmentally shaped in the form of an eccentric in the radial direction. Figure 4In the embodiment of the present invention, it can even be called a tenon shape or a protruding nose shape. Here, the operating area 410 cooperates with the first mechanical coupling element 510 and the second mechanical coupling element 520 so that the rotational movement of the operating rod 400 is mechanically coupled with the deflection of the clamping arm 210. The first mechanical coupling element 510 and the second mechanical coupling element 520 are designed for the mechanical coupling of the rotational movement of the operating rod 400 and the deflection of the clamping arm 210. For the mechanical coupling, the operating area 410 has a first guide groove 421, which serves as a sliding bearing device for guiding the first mechanical coupling element 510, and the operating area 410 has a second guide groove 422, which serves as a sliding bearing device for guiding the second mechanical coupling element 520.

[0084] The first mechanical coupling element 510 and the second mechanical coupling element 520 are connected to each other. Figure 4 In the embodiment of the present invention, the first mechanical coupling element 510 and the second mechanical coupling element 520 are integrally formed with the clamping arm 210 of the clamping spring 200. Here, the first mechanical coupling element 510 and the second mechanical coupling element 520 are deformed by about 90° laterally in the area of ​​the clamping arm 210 by the material of the clamping spring 200 and pass by the contact arm 220 of the clamping spring 200. The operating lever 400 can thus be arranged above the conductor guiding area. Through the design of the first mechanical coupling element 510 and the second mechanical coupling element 520, the adjustment force for offsetting the clamping arm 210 can act on both sides of the clamping arm 210 and thereby prevent the clamping spring from twisting or tilting, so as to reduce the lateral force on the housing 300.

[0085] exist Figure 4 In the embodiment of the invention, the contact arm 220 of the clamping spring 200 has a first recess 225 and a second recess 226. Figure 4 In the embodiment of the present invention, the first recess 225 and the second recess 226 are disposed opposite to each other with respect to the width of the abutment arm 220 , so that the width of the abutment arm 220 becomes thinner between the first recess 225 and the second recess 226 .

[0086] The first mechanical coupling element 510 is arranged inside the first recess 225, and the second mechanical coupling element 520 is arranged in the second recess 226. The length of the recesses 225, 226 and the arrangement of the recesses are designed here at least in terms of the movement of the coupling elements 510, 520 so that the coupling elements 510, 520 collide with the contact arm 220 as little as possible during the rotational movement of the actuating lever 400. In addition, the recesses can also be designed to be longer.

[0087] Relative to Figure 4 Alternatively to the embodiment in the embodiment, the first mechanical coupling element 510 and / or the second mechanical coupling element 520 are designed in one piece with the joystick 400. It is also possible that similar to Figure 2In an exemplary embodiment, the two mechanical coupling elements 510, 520 are designed as separate elements.

[0088] Alternatively, it is even possible that the first mechanical coupling element 510 and / or the second mechanical coupling element 520 each have a bearing device (eg, a support device) for supporting an actuating lever. Figure 4 ). Figure 4 The embodiment of the present invention differs in that the mechanical coupling elements 510, 520 overlap the operating section 410 of the operating lever 400 for this purpose and thus form a similar Figure 5 A bracket for manipulating section 410 of the embodiment.

[0089] exist Figure 5 In the embodiment of the invention, a spring force clamping joint 1 is shown in a partial view in the closed position GS. The actuating element is designed as an actuating lever 400, which is used to deflect the clamping arm 210 of the clamping spring 200. The actuating lever 400 has a first contour 460. The first contour 460 is designed as an outer contour. The first contour 460 is mechanically coupled to the clamping arm 210 for deflection by at least a part of the rotational movement of the actuating lever 400. Figure 5 In the exemplary embodiment, the first contour 460 is mechanically coupled to the clamping arm 210 via a first mechanical coupling element 550. The first mechanical coupling element 550 is fixedly connected to the clamping arm 210, for example supported on the clamping arm or as Figure 5 As shown, it is designed as an integral unit with the clamping arm 210. Figure 5 In the exemplary embodiment, the clamping arm 210 has a first mechanical coupling element 550. For example, the first mechanical coupling element 550 is formed integrally with the clamping spring 200 made of metal, for example spring steel. Figure 5 In the embodiment of the invention, the first mechanical coupling element 550 has a support 551 which, through at least a part of the rotational movement of the lever 400, contacts the first contour 460 for mechanical coupling, so that a force acting on the support 551 causes a deflection of the clamping arm 210. Figure 5 In the exemplary embodiment, the first contour 460 is designed to be at least partially eccentric.

[0090] The first contour 460 is mechanically coupled to the first mechanical coupling element 550 via at least part of the rotational movement of the actuating lever 400 for deflecting the clamping arm 210. Figure 5 As shown, an idle travel can also be provided in order to enable a better manual grip on the operating handle 490 .

[0091] exist Figure 5In the embodiment of the present invention, the first contour 460 exerts a pressure on the first mechanical coupling element 550 via the support 551 of the first mechanical coupling element 550 for mechanical coupling. This pressure causes a tensile force in the first mechanical coupling element 550 for deflecting the clamping arm 210. Figure 5 In the embodiment, the clamping arm 210 is pulled up to a certain extent in order to open the clamping position K. However, in Figure 5 The state in the closed position GS and the closed clamping position K are shown in FIG.

[0092] exist Figure 5 In the embodiment of the present invention, the operating lever 400 as the operating element has a second contour 470. The second contour 470 is also designed as an outer contour. Figure 5 In the embodiment of the invention, the second contour 470 has an eccentric shape. When operated, the joystick 400 performs a rotational movement, the instantaneous center of which is Figure 5 In the embodiment of is basically determined by the support pin 452. Figure 5 The first distance d1 is shown in FIG. 4 , and the first distance dimension is from the outer contour 470 of the joystick 400 to the instantaneous center. Figure 5 , a second distance d2 is shown, which measures from the outer contour 470 of the actuation lever 400 to the instantaneous center, but is offset by a rotation angle of, for example, 90°.

[0093] exist Figure 5 In the embodiment of the invention, the second contour 470 is mechanically coupled to the housing 300 for deflection via at least a portion of the rotational movement of the lever 400. Figure 5 In the embodiment, the housing wall 340 is in contact with the second contour 470 for mechanical coupling. Figure 5 Rotate upward to the open position (in Figure 5 (not shown in the figure), the second contour 470 continues to be in contact with the housing wall 340. However, in the open position, the second distance d2 between the housing wall 340 and the instantaneous center applies. If the second distance d2 is greater than the first distance d1, such as Figure 5 As shown in the embodiment of , the instantaneous center is shifted opposite to the conductor insertion direction ER.

[0094] Relative to Figure 5 Alternatively to the embodiment of the present invention, the second contour 470 is mechanically coupled to the contact arm 220 or to the busbar 100 for deflection by at least a part of the rotational movement of the actuating lever 400. For example, in Figure 5 In the embodiment, the housing wall 340 can be simply replaced by a section of the busbar 100 or by a section of the contact arm 220. It is even possible that a combination of sections of the housing 300 and / or of the busbar 100 and / or of the contact arm 220 forms a support for the second contour 470.

[0095] exist Figure 5 In an embodiment of the present invention, the control lever 400 is supported so that a first part of the deflection of the clamping arm 210 is caused by the first contour 460 and a second part of the deflection of the clamping arm 210 is caused by the second contour 470. In order to produce a superposition effect, all parts should not be too small. For example, the second part is at least 20%. For example, the first part is at least 20%. For example, it is feasible that the first part and the second part are about 50% for deflecting the clamping arm 210.

[0096] As in Figure 5 As shown in the embodiment of FIG. 4 , the second contour 470 is designed to be eccentric at least in sections. The second contour 470 is at least circumferentially away from the first contour 460 around the instantaneous center of the rotational movement of the joystick 400. Figure 5 In the embodiment of the present invention, the first contour 460 and the second contour 470 are opposed relative to the instantaneous center.

[0097] exist Figure 5 In the embodiment of the invention, the actuating lever 400 has a pin 452 for support, which is guided in an elongated hole 352 as a matching support. Additionally or alternatively, the actuating lever 400 can be guided via a sliding surface 353. The elongated hole 352 and the sliding surface can be designed, for example, in the housing 300 of the spring force clamping joint 1.

[0098] In order to further electrically connect the spring force clamping terminal 1, for example to a component assembly or a plug connector or a printed circuit board, Figure 5 In the embodiment of FIG. 1 , blade contacts 130 are shown as connection terminals by way of example. Alternatively, other contacts, such as fork contacts, can be used for further electrical connections.

[0099] exist Figure 6 In the embodiment of FIG. 1 , a spring force clamping joint 1 is shown in a partial view in the closed position GS. The actuating element is designed as an actuating lever 400, which is used to deflect the clamping arm 210 of the clamping spring 200. The actuating lever 400 has a first contour 460, similar to Figure 5 The first contour 460 is also designed as an external contour. Figure 5 4. The description of the first profile 460 in FIG.

[0100] exist Figure 6 In the embodiment of the present invention, the joystick 400 as the operating element has a second contour 471. The second contour 471 is designed as an inner contour. When operated, the joystick 400 performs a rotational movement, the instantaneous center of which is at Figure 6 In the embodiment of is basically determined by the support pin 452. Figure 6 The first distance d1 is shown in FIG. 4 , and the first distance is measured from the inner contour 471 of the joystick 400 to the instantaneous center. Figure 6, a second distance d2 is shown, which measures from the inner contour 471 of the joystick 400 to the instantaneous center, but is offset by a rotation angle, for example 90°.

[0101] exist Figure 6 In the embodiment of the invention, the second contour 471 is mechanically coupled to the housing 300 for deflection by at least a part of the rotational movement of the actuating lever 400. For this purpose, a fixed support rod 479 is provided, which is guided in the second contour 471 formed as a track along with the rotational movement. Figure 6 The middle support rod 479 is fixedly limited in the housing 300. Figure 6 Rotate upward to the open position (in Figure 6 471), the support rod 479 is in the final position in the second profile 471. However, in the open position, the second distance d2 between the support rod 479 and the instantaneous center applies. If the second distance d2 is greater than the first distance d1, such as Figure 6 As shown in the embodiment of , the instantaneous center is shifted opposite to the conductor insertion direction ER.

[0102] Relative to Figure 6 As an alternative to the exemplary embodiment of FIG. 4 , the support rod 479 is fixedly fastened to the contact arm 220 or to the busbar 100 , so that the second contour 471 is mechanically coupled for the deflection.

[0103] exist Figure 6 In the embodiment of the present invention, the control lever 400 is supported so that a first part of the deflection of the clamping arm 210 is caused by the first contour 460 and a second part of the deflection of the clamping arm 210 is caused by the second contour 471. In order to produce a superposition effect, all parts should not be too small. For example, the second part is at least 20%. For example, the first part is at least 20%. For example, it is feasible that the first part and the second part are about 50% for deflecting the clamping arm 210.

[0104] As in Figure 6 In the embodiment shown in FIG. 4 , the second contour 471 is designed to be eccentric at least in sections. The second contour 471 is spaced apart from the first contour 460 not only in the circumferential direction around the instantaneous center of the rotational movement of the operating lever 400 , but also in the radial direction.

[0105] exist Figure 6In the embodiment of the embodiment of the invention, the operating lever 400 has a bearing pin 452, which is supported in the long hole 352 of the housing 300. Alternatively, the long hole 352 can be designed in a part of the contact arm 220 of the clamping spring 200 or in a part of the busbar 100. When the operating lever 400 rotates, it rotates around the instantaneous center. This rotational movement component of the operating lever 400 causes the first part of the deflection of the clamping arm 210. This rotational movement component is superimposed on the translational movement component, wherein the translational movement of the instantaneous center is caused by the second contour 471. The instantaneous center moves inside the long hole 352 in the opposite direction of the insertion direction ER of the conductor. Here, the second part of the deflection of the clamping arm 210 of the clamping spring 200 is caused by the substantially translational movement of the operating lever 400.

[0106] exist Figure 7 In the embodiment of the present invention, a spring force clamping terminal 1 is shown in a partial view in a closed position GS, which is used to connect an electrical conductor 2. The actuating element is designed as an actuating lever 400, which is used to deflect the clamping arm 210 of the clamping spring 200. The actuating lever 400 has a first contour 460, similar to Figure 5 The first contour 460 is also designed as an external contour. Figure 5 4. The description of the first profile 460 in FIG.

[0107] exist Figure 7 In the embodiment of FIG. 4 , the operating lever 400 as the operating element has a second contour 472. The second contour 472 is designed as an inner contour. Figure 7 In the embodiment of the invention, the second contour 472 is mechanically coupled to the housing 300 for deflection by at least a part of the rotational movement of the actuating lever 400. For this purpose, a fixed support rod 479 is provided, which is guided in the second contour 472 formed as a track along with the rotational movement. Figure 7 In the embodiment, the support rod 479 is fixedly positioned in the housing 300 and / or the abutment arm 220 and / or the busbar 100. Figure 7 Rotate upward to the open position (in Figure 7 ), the support rod 479 is in the final position in the second profile 472. The instantaneous center is displaced in the opposite direction of the conductor insertion direction ER.

[0108] exist Figure 7 In the embodiment of the second contour 472, only radially spaced apart from the first contour 460. The two contours 460, 470 increase the stroke and contribute decisively to the deflection of the clamping arm 220 of the clamping spring 200. Figure 7 As shown in the embodiment of FIG. 4 , the second profile 472 is designed in the form of a track.

[0109] The invention is not limited to the illustrated embodiment. The invention can combine features of different embodiments with one another. It is even possible that the second contour is designed with other geometric shapes.

[0110] Reference numerals list

[0111] 1 Spring force clamping connector

[0112] 100 Bus

[0113] 110 bottom area, bottom section

[0114] 120 Busbar wall

[0115] 130 Connector, blade contact

[0116] 200 Clamping spring

[0117] 209 Opening

[0118] 210 Clamping arm

[0119] 211 Clamping edge

[0120] 220 arm rest

[0121] 221, 222 Connecting piece

[0122] 225, 226 concave part

[0123] 227 Opening

[0124] 228, 229 resting arm section

[0125] 230 Spring arch, spring root

[0126] 290, 291 Opening

[0127] 300 Shell

[0128] 310 Conductor guide channel

[0129] 352 Support, long hole

[0130] 400 Joystick

[0131] 410 Control area, control section

[0132] 419 Support device, eyelet

[0133] 450, 451 Rotating support device

[0134] 452 Rotating support device, pin

[0135] 460, 470, 471, 472 profile

[0136] 479 Support rod

[0137] 490 Grip Section

[0138] 510, 520, 530, 535, 540, 550 Mechanical coupling elements

[0139] 531, 541, 542, 543, 551 Supporting devices

[0140] d1, d2 distance

[0141] ER insertion direction

[0142] GS closed position

[0143] K Clamping position

[0144] OS Open Position

Claims

1. A spring force clamping connector (1) for connecting electrical conductors, - a busbar (100) having an electrical contact for an electrical conductor, - having a clamping spring (200), wherein The clamping spring comprises a clamping arm (210) and a contact arm (220) connected to the clamping arm (210). - having a rotatably mounted actuating element (400) for shifting the clamping arm (210) from a closed position (GS) into an open position (OS), - having a first mechanical coupling element, wherein the first coupling element is designed as a separate element, wherein the first mechanical coupling element is supported on the actuating element (400) and the clamping arm (210) for mechanical coupling, - wherein the operating element (400) has an operating area (410), which is radially shaped in sections in the form of an eccentric, and the operating area (410) cooperates with the first coupling element so that the rotational movement of the operating element (400) is mechanically coupled to the deflection of the clamping arm (210).

2. The spring force clamping joint (1) according to claim 1, in, The operating element (400) is designed as an operating lever for manual operation.

3. The spring force clamping joint (1) according to claim 2, in, The joystick is partially accommodated in the housing (300), with a gripping area (490) of the joystick protruding through a housing opening at the top side of the housing (300).

4. The spring force clamping joint (1) according to claim 1, in, The actuating element (400) is arranged outside the conductor guiding region so that the electrical conductor does not collide with parts of the actuating rod during introduction.

5. The spring force clamping joint (1) according to any one of the preceding claims, in, The actuating element (400) is provided with an idle travel.

6. The spring force clamping joint (1) according to claim 1, in, The width of the operating area (410) is equal to the width of the space between the two walls of the housing (300).

7. The spring force clamping joint (1) according to any one of the preceding claims, The actuation region (410) is designed in the form of a tenon or a nose.

8. The spring force clamping joint (1) according to claim 1, The operating area (410) has a guide device to guide the movement of the first coupling element.

9. The spring force clamping joint (1) according to one of the preceding claims, in, The operating element (400) has a first contour (460) which is mechanically coupled to the clamping arm (210) for the deflection movement via at least a portion of the rotational movement of the operating element (400).

10. The spring force clamping joint (1) according to claim 9, in, The first contour (460) is an outer contour.

11. Spring force clamping joint (1) according to claim 9 or 10, in, The first contour (460) is designed to be eccentric at least in sections.

12. The spring force clamping joint (1) according to claim 1, in, The outer contour of the actuation region (410) exerts pressure on the first coupling element during actuation.

13. The spring force clamping joint (1) according to claim 1, in, The first coupling element has a carrier (551) which, through at least a part of the rotational movement of the operating element (400), comes into contact with the outer contour of the operating region (410) for mechanical coupling.

14. Spring force clamping joint (1) according to claim 9 or 10, in, The operating element (400) has a second contour, which is mechanically coupled to the contact arm (220) and / or to the busbar (100) and / or to the housing (300) via at least a portion of the rotational movement of the operating element (400) to deflect the clamping arm (210).

15. The spring force clamping joint (1) according to claim 14, in, The second contour is an inner or outer contour of the manipulation element (400).

16. The spring force clamping joint (1) according to claim 14, in, The second contour is designed to be eccentric at least in sections.

17. The spring force clamping joint (1) according to claim 14, in, A first portion of the deflection of the clamp arm (210) is caused by the first profile (460), and a second portion of the deflection is caused by the second profile.

18. The spring force clamping joint (1) according to claim 14, in, The second contour is spaced apart from the first contour (460) at least in a circumferential direction and / or a radial direction based on an instantaneous center of the manipulation element (400).

19. The spring force clamping joint (1) according to claim 14, in, The second contour is spaced apart from the first contour (460) at least along a circumferential direction based on an instantaneous center of the manipulation element (400).

20. The spring force clamping joint (1) according to claim 14, in, The first contour (460) and the second contour are opposed relative to the instantaneous center.

21. The spring force clamping connection (1) according to claim 1, in, The actuating element (400) is mounted such that the instantaneous center and thus the axis of rotation are fixed.

22. The spring force clamping joint (1) according to one of the preceding claims, in, When the operating element (400) deflects the clamping arm (210) from the closed position (GS) to the open position (OS), the instantaneous center is displaced opposite to the conductor insertion direction.

23. The spring force clamping joint (1) according to one of the preceding claims, in, A first part of the deflection of the clamping arm (210) is caused by a substantially rotational movement of the actuating element (400), and a second part of the deflection is caused by a substantially translational movement of the actuating element (400) superimposed on the rotational movement.

24. The spring force clamping joint (1) according to one of the preceding claims, in, The operating element (400) has a cylindrical opening into which a cylindrical pin of the housing (300) is inserted to form a bearing device, or the operating element (400) has a pin which is guided through a long hole or a sliding surface in the housing (300) forming the bearing device.

25. The spring force clamping joint (1) according to one of the preceding claims, in, The actuating element (400) is supported by means of the busbar (100) or by means of the contact arm (220).

26. The spring force clamping joint (1) according to one of the preceding claims, in, The actuating element (400) has at least one supporting device for supporting the first coupling element.

27. The spring force clamping joint (1) according to one of the preceding claims, in, The first coupling element has at least one bearing device (541) for supporting the actuating element (400).

28. The spring force clamping joint (1) according to one of the preceding claims, in, The first coupling element has bearing means (542, 543) for bearing on the clamping arm (210).

29. The spring force clamping joint (1) according to one of the preceding claims, in, The spring force clamping joint (1) also has a second mechanical coupling element.

30. The spring force clamping joint (1) according to any one of the preceding claims, in, The second coupling element is integral with the operating element (400) or is a separate element.

31. The spring force clamping joint (1) according to any one of the preceding claims, in, The first coupling element and / or the second coupling element has at least one supporting device (551) for supporting the actuating element (400).

32. The spring force clamping joint (1) according to any one of the preceding claims, in, The supporting device (551) is a bracket or a sliding supporting device.

33. The spring force clamping joint (1) according to any one of the preceding claims, in, The first coupling element (530, 535, 540, 550) is made of metal in a flexurally rigid manner.

34. The spring force clamping joint (1) according to any one of the preceding claims, in, The abutment arm (220) abuts against the busbar (100).

35. The spring force clamping joint (1) according to claim 34, in, The connection is designed to be self-supporting via the clamping spring (200) and the busbar (100).

36. The spring force clamping joint (1) according to any one of the preceding claims, in, The contact arm (220) is connected to the clamping arm (210) via a spring arch (230) and is formed in one piece.

37. The spring force clamping joint (1) according to any one of the preceding claims, in, The busbar (100) has contacts (130) for electrically connecting to a plug connector or a circuit board.

38. The spring force clamping joint (1) according to any one of the preceding claims, in, The busbar (100) passes through the opening of the abutment arm (220), or the abutment arm (220) is hung in the opening of the busbar (100).

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