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-loaded clamping joints, also known as terminal clamps, are known, for example, from WO 2018 / 010893 A1. These terminal clamps, used for connecting electrical conductors, comprise a housing, a current bar disposed in the housing, a clamping spring disposed in the housing, and a rotatably mounted actuating lever. The clamping arm of the clamping spring has an actuating tab, which is arranged so that pressure can be applied from the actuating lever to the actuating tab. 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] Accordingly, a spring-force clamping connection is provided for connecting an electrical conductor.

[0006] The spring-force clamping terminal has busbars (or conductor rails) for electrical contacting of the conductors.

[0007] 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.

[0008] The spring-force clamping connection has a rotatably mounted actuating element for deflecting the clamping arm from the closed position into the open position.

[0009] 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.

[0010] According to an advantageous refinement, the contact arm has an opening. Advantageously, the first mechanical coupling element passes through the opening in the contact arm. Alternatively, the first mechanical coupling element is guided past the side of the contact arm, or the first mechanical coupling element has an opening through which the contact arm passes.

[0011] According to an advantageous further development, the operating element is designed as a joystick for manual operation. Alternatively, it is possible that the operating element is designed with an interface for an operating tool.

[0012] According to an advantageous development, the opening in the contact arm of the clamping spring is closed on the circumferential side.

[0013] According to an advantageous further development, the opening is formed in a central region across the width of the contact arm. The first mechanical coupling element passes through the opening in the central region.

[0014] According to an advantageous development, the opening extends from the contact arm through the spring arch into the clamping arm.

[0015] 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 perpendicular to the plane of extension of the contact arm.

[0016] According to advantageous improved design scheme, it is one-piece that the first coupling element of machinery is designed to with the clamping spring.For example, this integrity is constituted by the material fit or form fit between the first coupling element of machinery and the clamping spring.

[0017] According to advantageous improved design, the first coupling element of the machine is formed in one piece with the clamping arm. For example, the first coupling element of the machine and the clamping arm of the clamping spring are formed in one piece and bent by spring steel.

[0018] According to an advantageous development, the first mechanical coupling element is cut out of a central region of the clamping arm and is bent.

[0019] According to an advantageous development, the first mechanical coupling element is designed integrally with the actuating element.

[0020] 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.

[0021] Another aspect of the present invention is a spring force clamping terminal for connecting electrical conductors. The spring force clamping terminal has a busbar for electrically contacting the conductors.

[0022] 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.

[0023] The spring-force clamping connection has a rotatably mounted actuating element for deflecting the clamping arm from the closed position into the open position.

[0024] The spring-force clamping joint has a first mechanical coupling element and a second mechanical coupling element, which serve to mechanically couple the rotational movement of the actuating element to the deflection movement of the clamping arm.

[0025] 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 within the first recess. Advantageously, the second mechanical coupling element is arranged within the second recess. Alternatively, the first mechanical coupling element and the second mechanical coupling element are guided past the side of the abutment arm.

[0026] According to an advantageous development, the first mechanical coupling element and / or the second mechanical coupling element are formed integrally with the clamping arm.

[0027] According to an advantageous development, the first mechanical coupling element and / or the second mechanical coupling element are designed integrally with the actuating element or as separate elements.

[0028] According to an advantageous development, the actuating element has at least one bearing device for supporting the first mechanical coupling element and / or the second mechanical coupling element.

[0029] According to an advantageous development, the bearing device is a bracket or a (linear) sliding bearing device.

[0030] 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.

[0031] Another aspect of the present invention provides a spring force clamping connector for connecting electrical conductors.

[0032] The spring-force clamping terminal has busbars for electrical contacting of the conductors.

[0033] The spring-force clamping connection has a clamping spring, wherein the clamping spring has a clamping arm.

[0034] The spring-force clamping connection has a rotatably mounted actuating element for a rotational movement between an open position and a closed position.

[0035] The actuating element is designed to deflect the clamping arm.

[0036] The actuating element has a first contour, which is mechanically coupled to the clamping arm via at least a portion of the rotational movement of the actuating element for the deflection movement.

[0037] According to an advantageous refinement, the spring-force clamping connection has a housing. According to an advantageous refinement, the actuating element has a second contour, which is mechanically coupled to the contact arm and / or to the busbar and / or to the housing by at least a portion of the rotational movement of the actuating element for the deflection movement.

[0038] According to an advantageous development, the actuating element is mounted such that a first part of the deflection is caused by the first contour and a second part of the deflection is caused by the second contour.

[0039] According to an advantageous development, the first contour is designed to be eccentric at least in sections.

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

[0041] According to an advantageous refinement, a first portion of the deflection is caused by a substantially rotational movement of the operating element. According to an advantageous refinement, a second portion of the deflection is caused by a substantially translational movement of the operating element superimposed on the rotational movement.

[0042] According to an advantageous development, the second contour is an outer contour of the actuating element.

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

[0044] According to an advantageous 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.

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

[0046] According to an advantageous development, the clamping arm has a first mechanical coupling element.

[0047] According to an advantageous development, the first contour is mechanically coupled to the first mechanical coupling element for deflecting the clamping arm at least via the portion of the rotational movement of the actuating element.

[0048] 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.

[0049] According to one aspect of the present invention, a spring-force clamping connector is provided for connecting an electrical conductor. The spring-force clamping connector has a busbar for electrically contacting the conductor. The spring-force clamping connector has a clamping spring with at least one clamping arm. The spring-force clamping connector has a rotatably mounted actuating element for deflecting the clamping arm. The spring-force clamping connector has a first mechanical coupling element for mechanically coupling the rotational movement of the actuating element to the deflection of the clamping arm.

[0050] In the present description, indefinite articles are not to be understood as meaning a specific quantity. Thus, an electrical conductor is understood to mean at least one electrical conductor, so that a spring-force clamping joint can connect exactly one, two, or more electrical conductors to a busbar. A busbar is understood to mean exactly one, two, or more busbars. A clamping spring is understood to mean exactly one, two, or more clamping springs. An operating element is understood to mean exactly one, two, or more operating elements. A busbar may also be referred to as a current bar. The busbar is optimized for electrical contact and electrical conductivity and, for example, comprises copper or a copper alloy. The clamping spring is suitable for clamping electrical conductors. Advantageously, the clamping spring is formed and bent from spring steel. Advantageously, the clamping spring has exactly one clamping arm for clamping the associated electrical conductor, so that a single conductor is not clamped by the two or more clamping arms of the clamping spring. The contact arm of the clamping spring is designed to rest on a fixed area of ​​the spring-force clamping joint in order to withstand the opposing spring force. For example, the contact arm rests on the busbar and / or the housing. Advantageously, the connection is designed to be self-supporting via the clamping spring and busbar. The rest arm is directly or indirectly connected to the clamping arm. For example, the rest arm is connected to the clamping arm via a spring arch. Advantageously, the rest arm, spring arch, and clamping arm are integrally formed and bent, or alternatively, the rest arm and clamping arm are fixed to each other. The operating element is designed to be operable and can be operated, for example, manually or with the aid of an operating tool. The spring-force clamping joint has a support device and a mating support device for supporting the operating element for rotational movement. The mating support device for the operating element is, for example, designed in the housing and / or busbar. A mechanical coupling element is used to convert the rotational movement of the operating element into a deflection of the clamping arm. For example, the first / second coupling element has one or more joints and / or one or more rigid or at least partially flexible connecting rods and / or one or more support devices, etc. The improved designs and technical features described in the claims and in the specification, especially with respect to the design solutions described in the drawings, can be integrated into the spring-force clamping joint individually or in combination. The present invention is not limited to the specific design solutions shown in the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The design scheme of the present invention will be further described below with reference to the accompanying drawings.

[0052] Figure 1 An embodiment of a spring terminal is shown;

[0053] Figure 2 Another embodiment of a spring terminal is shown;

[0054] Figure 3 Another embodiment of a spring terminal is shown;

[0055] Figure 4 Another embodiment of a spring terminal is shown;

[0056] Figure 5 Another embodiment of a spring terminal is shown;

[0057] Figure 6 Another embodiment of a spring terminal is shown;

[0058] Figure 7 Another embodiment of a spring terminal is shown. DETAILED DESCRIPTION

[0059] Figures 1 to 7 The following shows a partial view of various embodiments of spring-force clamping connectors. A spring-force clamping connector 1 enables 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. The core is surrounded by insulating material. To achieve 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 presses into the material of the conductor and thereby significantly increases the extraction force.

[0060] The spring-force clamping terminal 1 has a busbar 100 for electrically contacting the conductor. The busbar 100 is advantageously made of a material with a higher 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), such as fork contacts, for further electrical connections.

[0061] 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. A housing is not absolutely necessary in low-voltage applications. In the figures, the housing 300 is only partially shown and cut away. The housing 300 has a conductor guide channel for guiding the conductor to the clamping position. The figures show a spring-force clamping terminal with exactly one busbar 100 and exactly one clamping spring 200. For a multi-pole connection possibility, the spring-force clamping terminal 1 has a corresponding number of busbars 100 and clamping springs 200, which can be insulated from one another by the housing 300.

[0062] 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, the clamping spring 200 has a clamping arm 210 and an abutment arm 220 and a spring arch 230 connecting the clamping arm 210 and the abutment arm 220. The clamping spring 200 extends from the clamping arm 210 through the spring arch 230 to the abutment arm 220.

[0063] The clamping spring 200 is supported against the spring force introduced by the clamping arms 210 by the contact arms 220. This support is advantageously achieved by the contact arms 220 resting against the busbar 100. As shown, the busbar 100 has a base region 110 and a busbar wall 120 that is angled relative to the base section 110. A section 228 of the contact arms 220 extends along the busbar wall 120, while a further section 229 of the contact arms 220 extends along the base region 110. The base region 110 of the busbar 100 forms a surface for contacting a conductor, with the further section 229 of the contact arms 220 situated opposite this surface. In the illustrated embodiment, the busbar 100 extends through the opening 227 of the contact arms 220. Of course, the busbar 100 can also be shaped differently and, for example, have an opening into which the contact arms 220 hang (not shown).

[0064] The spring-force clamping joint has a rotatably mounted 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 for the electrical conductor, which is determined by the clamping arm and the busbar, is opened. In the closed position, the clamping position is not opened. The clamping spring 200 is designed to press the previously introduced electrical conductor onto the busbar 100 with the help of the clamping arm 210 in the closed position. For example, the clamping edge 211 presses the conductor at the free end, which in turn presses the conductor against the busbar 100 and forms an electrical contact at the busbar 100.

[0065] In the embodiment of the drawings, the operating rod 400 is arranged outside the conductor guide area so that the conductor does not collide with parts of the operating rod when being introduced. Therefore, the width of the conductor guide channel 310 is optimized for the largest possible conductor.

[0066] By 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, as shown in FIG. Figures 5 to 7 If the operating lever 400 is in the open position OS, as shown in Figures 1 to 4, the clamping arm 210 is then 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 its contact position on the busbar 100 or at the contact point on the electrical conductor by the deflection of the clamping arm 210.

[0067] 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.

[0068] Then further elaborate on Figures 1 to 7 Individual features and distinctions of the exemplary embodiments of the present invention are described. Different features of the exemplary embodiments can be combined with one another.

[0069] Figure 1 The spring force clamping joint 1 of the embodiment of the present invention has a mechanical first 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 in the interior of the housing 300. Figure 1 In the embodiment, the actuating lever 400 is supported such that the instantaneous center (or base point) is fixed, and thus the axis of rotation is fixed. For example, the actuating 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 actuating lever 300 can be supported by means of the busbar 100 or by the abutment arm 220 of the clamping spring 200 (not shown).

[0070] exist Figure 1 In the embodiment of the present invention, the operating lever 400 has an operating area 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 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 and the offset of the clamping arm 210 are mechanically coupled.

[0071] The operating area 410 is Figure 1In the embodiment of the embodiment, the width 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 over the entire width of the space via the actuation region 410. It is also possible for the actuation region 410 to have guide means for guiding the movement of the first mechanical coupling element 530.

[0072] exist Figure 1 , the actuating lever 400 is shown in the open position OS. Accordingly, the swiveled-away clamping arm 210 is in the open position OS. The actuating region 410 of the actuating lever 400 presses against 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 it into the open position OS.

[0073] 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 region relative to the width of the contact arm 220. The first mechanical coupling element 530 passes through the opening 290 in this central region. Figure 1 In the exemplary embodiment, the opening 290 is formed in the region of the contact arm 220, which extends essentially 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 formed on one side of the contact arm 220, whereas the clamping position is formed on the opposite side of the contact arm 220.

[0074] 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 circumferentially. 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 need to be guided laterally on the contact arms 220.

[0075] exist Figure 1 In the exemplary embodiment, the first mechanical coupling element 530 is integrally formed and bent with the clamping arm 210 of the clamping spring 200. 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 is guided through the opening 290 in the contact arm 220.

[0076] The opening 290 in the contact arm 220 is dimensioned such that the first mechanical coupling element 530 is movable within the opening 290. Figure 1 In the exemplary embodiment, the movement of the mechanical first coupling element 530 within the opening 290 can occur not only along the main extension direction of the opening 290 , but also transversely to the main extension direction of the opening 290 .

[0077] exist Figure 2 In the embodiment of FIG, 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 shown only schematically. Alternatively, even hinges or the like can be used.

[0078] 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 arranged on the Figure 2 The embodiment of the embodiment is shown in a greatly simplified manner. Alternatively, supporting means such as film hinges, brackets, swivel mounts 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.

[0079] 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 area 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, for example, be made of plastic or metal in a flexurally rigid or elastic manner. The separate mechanical first coupling element 540 is Figure 2 In the embodiment of the clamping spring 200 , the clamping arm 210 is supported in the opening 209. By means of a 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 .

[0080] exist Figure 3 In the embodiment, compared with Figure 2In contrast to the embodiment of the embodiment of the 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 again arranged in the opening 291 in the central region over the width of the opening 291 of the contact arm 220. Figure 3 In the embodiment of the invention, 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 the support element 531 for actuation. In this case, 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, the width of the clamping spring 200 can be maximized inside the inner wall of the housing 300. In this exemplary embodiment, no areas are bent inward from the edge of the clamping spring 200. It is not even necessary to provide recesses for the contact arm 220 and / or the clamping arm 210 in order for a component to pass past one arm 210, 220.

[0081] 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 for mechanically coupling 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 in the interior of the housing 300. Figure 4 In the exemplary embodiment, the actuating lever 400 is supported such that the instantaneous center, and thus the axis of rotation, is fixed. In the exemplary embodiment, the actuating lever 400 has a cylindrical tenon 451 that fits into a cylindrical opening (not shown) in the housing 300 to form a rotary sliding bearing. Alternatively, the actuating lever 300 can be supported by means of a busbar 100 or by means of an abutment arm 220 of a clamping spring 200 (not shown).

[0082] exist Figure 4 In the embodiment of the present invention, the operating lever 400 has an operating area 410, which is segmentally shaped in the form of an eccentric in the radial direction. Figure 4In certain embodiments, the actuating region 410 can even be described as being in the form of a tenon or protruding nose. Here, the actuating region 410 cooperates with the first mechanical coupling element 510 and the second mechanical coupling element 520 to mechanically couple the rotational movement of the actuating lever 400 to the deflection of the clamping arm 210. The first mechanical coupling element 510 and the second mechanical coupling element 520 are designed for mechanically coupling the rotational movement of the actuating lever 400 to the deflection of the clamping arm 210. For this mechanical coupling, the actuating region 410 has a first guide groove 421, which serves as a sliding bearing for guiding the first mechanical coupling element 510, and a second guide groove 422, which serves as a sliding bearing for guiding the second mechanical coupling element 520.

[0083] The first mechanical coupling element 510 and the second mechanical coupling element 520 are connected to each other. Figure 4 In the exemplary embodiment, 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 laterally by approximately 90° in the region of the clamping arm 210 from the material of the clamping spring 200 and pass past the contact arm 220 of the clamping spring 200. This allows the operating lever 400 to be positioned above the conductor guide region. Due to the design of the first mechanical coupling element 510 and the second mechanical coupling element 520, the adjustment force for deflecting the clamping arm 210 can act on both sides of the clamping arm 210, thereby preventing twisting or tilting of the clamping spring and reducing lateral forces on the housing 300.

[0084] 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 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 .

[0085] The first mechanical coupling element 510 is arranged within 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 at least in this case with respect to 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. Furthermore, the recesses can also be designed to be longer.

[0086] Relative to Figure 4 Alternatively to the embodiment in FIG. 5 , the mechanical first coupling element 510 and / or the mechanical second coupling element 520 are designed integrally with the joystick 400. It is also possible that, similar to Figure 2In the exemplary embodiment, the two mechanical coupling elements 510 , 520 are designed as separate elements.

[0087] 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 ( Figure 4 (not shown). Figure 4 The embodiment differs in that the mechanical coupling elements 510, 520 overlap the operating section 410 of the operating lever 400 and thereby form a similar Figure 5 The bracket for manipulating the section 410 of the embodiment.

[0088] exist Figure 5 In the embodiment of FIG, a partial view of a spring-force clamping joint 1 is shown in the closed position GS. The actuating element is designed as an actuating lever 400, which serves 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 via at least a portion of the rotational movement of the actuating lever 400. Figure 5 In the embodiment of the present invention, 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 shown in FIG. Figure 5 As shown, it is designed as a whole 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 bracket 551 which, through at least a portion of the rotational movement of the operating lever 400, comes into contact with the first contour 460 for mechanical coupling, so that a force acting on the bracket 551 causes a deflection of the clamping arm 210. Figure 5 In the embodiment of FIG. 4 , the first contour 460 is designed to be eccentric at least in sections.

[0089] The first contour 460 is mechanically coupled to the first mechanical coupling element 550 via at least the portion of the rotational movement of the operating 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 .

[0090] exist Figure 5In the embodiment of the present invention, the first contour 460 exerts a pressure force on the first mechanical coupling element 550 via the support 551 of the first mechanical coupling element 550 for mechanical coupling. This pressure force 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.

[0091] exist Figure 5 In the embodiment of FIG, 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 profile 470 has an eccentric shape. When actuated, the actuating lever 400 performs a rotational movement with its instantaneous center at 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 , which is the distance from the outer contour 470 of the joystick 400 to the instantaneous center. Figure 5 , a second distance d2 is shown, which measures the distance from the outer contour 470 of the actuating lever 400 to the instantaneous center, but offset by a rotation angle of, for example, 90°.

[0092] exist Figure 5 In the embodiment of the invention, the second profile 470 is mechanically coupled to the housing 300 for deflection via at least a portion of the rotational movement of the operating 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), the second profile 470 continues to be in contact with the housing wall 340. However, in the open position, a second distance d2 applies between the housing wall 340 and the instantaneous center. If the second distance d2 is greater than the first distance d1, as Figure 5 As shown in the embodiment of FIG, the instantaneous center is shifted opposite to the conductor insertion direction ER.

[0093] Relative to Figure 5 Alternatively to the embodiment of the 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, Figure 5 In this 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.

[0094] exist Figure 5 In the embodiment of FIG. 4 , the operating lever 400 is supported such that a first portion of the deflection of the clamping arm 210 is caused by the first contour 460, and a second portion of the deflection of the clamping arm 210 is caused by the second contour 470. To achieve a synergistic effect, both portions should not be too small. For example, the second portion is at least 20%. For example, the first portion is at least 20%. For example, it is feasible that the first portion and the second portion are approximately 50% of the deflection of the clamping arm 210.

[0095] As in Figure 5 As shown in the embodiment of FIG, 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 FIG. 4 , the first contour 460 and the second contour 470 are opposed relative to the instantaneous center.

[0096] exist Figure 5 In the exemplary embodiment, the actuating lever 400 has a pin 452 for support, which is guided in an elongated hole 352 as a counter-supporting device. 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 formed, for example, in the housing 300 of the spring-force clamping joint 1.

[0097] In order to further electrically connect the spring force clamping terminal 1, for example to a component assembly or a plug-in connector or a printed circuit board, Figure 5 In the embodiment of FIG, blade contacts 130 are shown as terminals by way of example. Alternatively, other contacts, such as fork contacts, can be used for further electrical connections.

[0098] exist Figure 6 In the embodiment of FIG. 1 , a partial view of a spring-force clamping joint 1 in the closed position GS is shown. The actuating element is designed as an actuating lever 400, which serves 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 outer contour. Figure 5 4. The description of the first profile 460 in FIG.

[0099] exist Figure 6 In the embodiment of the present invention, the operating lever 400 as the operating element has a second contour 471. The second contour 471 is designed as an inner contour. When operated, the operating lever 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, which is the distance from the inner contour 471 of the joystick 400 to the instantaneous center. Figure 6A second distance d2 is shown in FIG. 4 , which measures the distance from the inner contour 471 of the joystick 400 to the instantaneous center, but offset by a rotation angle of, for example, 90°.

[0100] exist Figure 6 In the embodiment of the invention, the second contour 471 is mechanically coupled to the housing 300 for deflection via at least a portion of the rotational movement of the operating lever 400. For this purpose, a fixed support rod 479 is provided, which is guided in the second contour 471 formed as a rail 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 (not shown), 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, as Figure 6 As shown in the embodiment of FIG, the instantaneous center is shifted opposite to the conductor insertion direction ER.

[0101] Relative to Figure 6 Alternatively to the exemplary embodiment, 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.

[0102] exist Figure 6 In the embodiment of FIG. 4 , the operating lever 400 is supported so that a first portion of the deflection of the clamping arm 210 is caused by the first contour 460, and a second portion of the deflection of the clamping arm 210 is caused by the second contour 471. To achieve a superposition effect, both portions should not be too small. For example, the second portion is at least 20%. For example, the first portion is at least 20%. For example, it is feasible that the first portion and the second portion are approximately 50% of the deflection of the clamping arm 210.

[0103] As in Figure 6 In the embodiment shown in FIG, the second contour 471 is designed at least in sections to be eccentric. 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.

[0104] exist Figure 6In the embodiment shown, the actuating lever 400 includes a bearing pin 452, which is supported in the elongated hole 352 of the housing 300. Alternatively, the elongated hole 352 can be formed in a portion of the contact arm 220 of the clamping spring 200 or in a portion of the busbar 100. During rotational movement of the actuating lever 400, it rotates about the instantaneous center. This rotational motion component of the actuating lever 400 causes a first portion of the deflection of the clamping arm 210. This rotational motion component is superimposed on a translational motion component, wherein the translational motion of the instantaneous center is caused by the second contour 471. The instantaneous center moves within the elongated hole 352 counter to the conductor insertion direction ER. The second portion of the deflection of the clamping arm 210 of the clamping spring 200 is caused by the essentially translational motion of the actuating lever 400.

[0105] exist Figure 7 In the embodiment of FIG. 1 , a spring force clamping terminal 1 is shown in a partial view in the closed position GS for connecting an electrical conductor 2. The actuating element is designed as an actuating lever 400 for deflecting 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 outer contour. Figure 5 4. The description of the first profile 460 in FIG.

[0106] exist Figure 7 In the embodiment of FIG, 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 profile 472 is mechanically coupled to the housing 300 for deflection via at least a portion of the rotational movement of the operating lever 400. For this purpose, a fixed support rod 479 is provided, which is guided in the second profile 472 formed as a rail along with the rotational movement. Figure 7 In the embodiment, the support rod 479 is fixedly positioned in the housing 300 and / or the support arm 220 and / or the busbar 100. Figure 7 Rotate upward to the open position (in Figure 7 ), the strut 479 is in the final position in the second profile 472. The instantaneous center is displaced counter to the conductor insertion direction ER.

[0107] exist Figure 7 In the embodiment of the second contour 472, the first contour 460 is only radially spaced apart. The two contours 460, 470 increase the stroke and contribute significantly to the deflection of the clamping arm 220 of the clamping spring 200. Figure 7 As shown in the embodiment of FIG, the second profile 472 is designed in the form of a rail.

[0108] The present invention is not limited to the exemplary embodiments shown. The present invention can combine features of different exemplary embodiments. It is even possible to design the second contour with other geometric shapes.

[0109] Reference Signs List

[0110] 1 Spring-loaded clamping connector

[0111] 100 bus

[0112] 110 bottom area, bottom section

[0113] 120 busbar wall

[0114] 130 connector, blade contact

[0115] 200 Clamping spring

[0116] 209 Opening

[0117] 210 Clamping Arm

[0118] 211 Clamping edge

[0119] 220 resting arm

[0120] 221, 222 connecting piece

[0121] 225, 226 concave part

[0122] 227 Opening

[0123] 228, 229 resting on arm sections

[0124] 230 Spring arch, spring root

[0125] 290, 291 opening

[0126] 300 shell

[0127] 310 conductor guide channel

[0128] 352 support, long hole

[0129] 400 Joystick

[0130] 410 Control area, control section

[0131] 419 Support device, eyelet

[0132] 450, 451 Rotating support device

[0133] 452 Rotating support device, pin

[0134] 460, 470, 471, 472 outlines

[0135] 479 support rod

[0136] 490 grip section

[0137] 510, 520, 530, 535, 540, 550 Mechanical coupling elements

[0138] 531, 541, 542, 543, 551 supporting devices

[0139] d1, d2 distance

[0140] ER insertion direction

[0141] GS closed position

[0142] K Clamping position

[0143] OS Open Position

Claims

1. A spring force clamping connector (1) for connecting electrical conductors, - a busbar (100) having electrical contacts for electrical conductors, - 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). - a rotatably mounted actuating element (400) for shifting the clamping arm (210) from a closed position (GS) into an open position (OS), - wherein the operating element (400) has a first contour (460), the first contour (460) being an outer contour, - a first mechanical coupling element for mechanically coupling the rotational movement of the actuating element (400) to the deflection movement of the clamping arm (210), wherein the first coupling element is designed as a separate element (540) which is supported on the actuating element (400) and the clamping arm (210) for mechanical coupling, wherein the first coupling element comes into contact with the first contour (460) for mechanical coupling via at least a portion of the rotational movement of the operating element (400).

2. A spring force clamping connector (1) for connecting electrical conductors, - a busbar (100) having electrical contacts for electrical conductors, - 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). - a rotatably mounted actuating element (400) for shifting the clamping arm (210) from a closed position (GS) into an open position (OS), - wherein the operating element (400) has a first contour (460), - a first mechanical coupling element for mechanically coupling the rotational movement of the actuating element (400) to the deflection movement of the clamping arm (210), - wherein the first coupling element is guided laterally past the contact arm (220).

3. A spring force clamping connector (1) for connecting electrical conductors, - a busbar (100) having electrical contacts for electrical conductors, - 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). - a rotatably mounted actuating element (400) for shifting the clamping arm (210) from a closed position (GS) into an open position (OS), - a first mechanical coupling element for mechanically coupling the rotational movement of the actuating element (400) to the deflection movement of the clamping arm (210), wherein the first coupling element is made of an elastic or flexurally rigid plastic.

4. Spring force clamping joint (1) according to claim 3, in, The operating element (400) has a first contour (460).

5. Spring force clamping joint (1) according to claim 2 or 3, in, The first coupling element is a separate element which is supported on the actuating element (400) and / or the clamping arm (210) for mechanical coupling.

6. Spring force clamping joint (1) according to claim 2 or 3, in, The first coupling element is integral with the operating element (400).

7. Spring force clamping joint (1) according to claim 2 or 4, in, The first contour (460) is an outer contour.

8. Spring force clamping joint (1) according to any one of the preceding claims 1, 2, 4, in, The first contour (460) 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).

9. Spring force clamping joint (1) according to any one of the preceding claims 1, 2, 4, in, The first contour (460) is designed at least in sections to be eccentric, or to be tongue-shaped, or to be nose-shaped.

10. Spring force clamping joint (1) according to any one of the preceding claims 1, 2, 4, in, The first profile (460) applies pressure to the first coupling element.

11. Spring force clamping joint (1) according to claim 10, in, This pressure induces a tensile force in the first coupling element which serves to deflect the clamping arm (210).

12. Spring-force clamping joint (1) according to one of the preceding claims 1 to 3, in, The actuating element (400) has at least one bearing device for supporting the first coupling element and / or the mechanical second coupling element.

13. Spring force clamping joint (1) according to claim 12, in, The first coupling element and / or the second coupling element are designed integrally with the operating element (400).

14. Spring force clamping joint (1) according to claim 12, in, The first coupling element and the second coupling element are designed as separate elements.

15. Spring force clamping joint (1) according to claim 12, in, The supporting device is a bracket or a sliding supporting device.

16. Spring-force clamping joint (1) according to one of the preceding claims 1 to 3, in, The first coupling element has at least one supporting device for supporting the actuating element (400).

17. The spring force clamping joint (1) according to any one of the preceding claims 1, 2, 4, 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).

18. Spring force clamping joint (1) according to claim 17, in, A first portion of the deflection is caused by the first profile (460), and a second portion of the deflection is caused by the second profile.

19. Spring force clamping joint (1) according to claim 17 or 18, The second contour is an outer contour or an inner contour of the operating element (400).

20. Spring force clamping joint (1) according to claim 19, in, The second contour is designed to be eccentric at least in sections.

21. Spring-force clamping joint (1) according to one of claims 17 to 20, The second contour is spaced apart from the first contour (460) at least in a circumferential and / or radial direction around the instantaneous center of the operating element (400).

22. Spring-force clamping joint (1) according to one of the preceding claims 1 to 3, in, A first part of the deflection is caused by a substantially rotational movement of the operating element (400), and / or a second part of the deflection is caused by a substantially translational movement of the operating element (400) superimposed on the rotational movement.

23. The spring force clamping joint (1) according to any one of the preceding claims 1 to 3, The operating element (400) is designed as an operating lever for manual operation and has a gripping area (490) which protrudes through a housing opening at the top side of the housing (300), wherein the operating element (400) is arranged outside the conductor guide area.

24. Spring force clamping joint (1) according to claim 23, in, The operating lever has a cylindrical opening, into which a cylindrical pin of the housing (300) is installed to form a rotary sliding support device.

25. Spring force clamping joint (1) according to claim 23 or 24, in, The operating lever has an operating region (410) which cooperates with the first coupling element so that the rotational movement of the operating lever is mechanically coupled to the deflection of the clamping arm (210), wherein the operating region (410) presses on the first coupling element.

26. Spring force clamping joint (1) according to claim 25, in, The operating region (410) has guide means for guiding the movement of the first coupling element.

27. Spring force clamping joint (1) according to claim 25, in, The width of the manipulation area (410) is equal to the width of the space between the two walls of the housing (300).

28. Spring force clamping joint (1) according to one of the preceding claims 1 to 3, in, The first coupling element has a bracket, a rotary mount as a bearing means.

29. The spring-force clamping connection (1) according to claim 1, comprising terminals for a printed circuit board or terminals for a plug-in connector.

30. The spring force clamping joint (1) according to any one of the preceding claims 1 to 3, in, The abutment arm (220) abuts against a fixed region of the spring-force clamping connection (1), so that the clamping spring (200) and the busbar (100) are designed to be self-supporting.

31. The spring force clamping joint (1) according to any one of the preceding claims 1 to 3, in, The actuating element (400) is designed on one side of the contact arm (220), and / or the clamping position for the electrical conductor, which is determined by the clamping arm (210) and the busbar (100), is designed on the opposite side of the contact arm (220).

32. The spring force clamping joint (1) according to any one of the preceding claims 1 to 3, in, The actuating element (400) is provided with an idle travel.

33. The spring force clamping joint (1) according to claim 29, wherein The terminal is a blade contact or a fork contact.

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