Wiring device and wiring terminal
By introducing a combination design of triggering elements and operating elements into the wiring device, the automatic clamping and release of flexible conductors is achieved, which solves the problem of complicated operation in the prior art and improves wiring efficiency.
Patent Information
- Application Number
- CN202411627003.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-17
- Filing Date
- 2024-11-14
- Publication Date
- 2025-05-20
AI Technical Summary
When connecting flexible conductors, the existing wiring devices are complicated to operate and require manual operation of the clamping spring, thereby increasing assembly time and difficulty.
A wiring device is designed, using a combination of trigger elements and operating elements. Through the transfer of clamping legs and the swinging movement of trigger elements, the automatic clamping and release of flexible conductors is achieved, simplifying the operation process.
The device can simply and reliably connect the flexible conductor and automatically clamp, significantly reducing operation steps and time and improving wiring efficiency.
Smart Images
Figure CN120021104A_ABST
Abstract
Description
Field of the Invention
[0001] The present invention relates to a connection device for connecting electrical conductors. The present invention also relates to a terminal, in particular a junction box, having such a connection device. Background Art
[0002] Such connection devices usually have a clamping spring configured as a helical torsion spring, which has a holding leg and a clamping leg, wherein a conductor inserted into the connection device can be clamped to a busbar by means of the clamping leg of the clamping spring. If, in particular, a flexible conductor is to be clamped, the clamping spring must be transferred to an open position by means of an operating element before the conductor is inserted and then be operated so that the clamping spring or the clamping leg pivots away from the busbar, whereby the conductor can be inserted into the intermediate space between the busbar and the clamping spring. Only in the case of a rigid and thus stable conductor can the conductor exert sufficient force on the clamping spring or the clamping leg of the clamping spring in order to be able to pivot the clamping leg away from the busbar without the user having to operate the operating element for this purpose. In the case of a flexible conductor, the user must first operate the operating element to pivot the clamping spring away from the busbar so that the flexible conductor can be inserted. In order to clamp the inserted conductor, the user must again manually operate the operating element to transfer the clamping spring from the open position to the clamping position. The above-mentioned manual operation of the operating element makes the assembly or wiring of the conductor difficult for the user because the operation is cumbersome and thus also increases the time consumption. Summary of the Invention
[0003] The object of the present invention is to provide a connection device in which the wiring of flexible conductors in particular can be simplified.
[0004] According to the present invention, this object is solved by the features of the independent claims. Suitable designs and advantageous developments of the present invention are given in the dependent claims.
[0005] The wiring device according to the present invention has: a housing with a conductor insertion opening; a busbar arranged in the housing; a clamping spring arranged in the housing, the clamping spring having a holding leg and a clamping leg, wherein the clamping leg is movable between a clamping position and an open position; and an operating element by means of which, by the movement of the operating element along an operating direction, the clamping leg can be moved from the clamping position to the open position. The wiring device also has a triggering element which, in the open position of the clamping leg, engages with the clamping leg such that the clamping leg is held in the open position by means of the triggering element, and the triggering element is pivotally supported on the clamping spring such that, when a conductor to be connected is inserted into the conductor insertion opening along an insertion direction, the triggering element can be operated by means of a pressure surface of the triggering element such that the clamping leg disengages from the triggering element and pivots from the open position to the clamping position, wherein the triggering element has a triggering arm which can be operated by means of the operating element such that the clamping leg disengages from the triggering element and pivots from the open position to the clamping position.
[0006] Now, with the wiring device according to the present invention, flexible conductors can also be simply and reliably connected and clamped on the busbar. The clamping spring is preferably configured as a helical torsion spring, which has a holding leg and a clamping leg pivotally configured relative to the holding leg. Through the pivoting movement of the clamping leg of the clamping spring, the clamping leg can be transferred to an open position and a clamping position. In the open position, the clamping leg is arranged spaced apart from the busbar, in particular spaced apart from the clamping section of the busbar, and the conductor to be connected can be inserted into the intermediate space or conductor connection space thus formed between the busbar or the clamping section of the busbar and the clamping leg, or can be removed therefrom. In the clamping position, the clamping leg can abut against the busbar or the clamping section of the busbar, or against the connected conductor, in order to clamp the conductor onto the busbar or the clamping section of the busbar. The transfer of the clamping leg, in particular from the clamping position to the open position, is effected by means of an operating element. The operating element is preferably guided in the housing in a purely linear manner. As long as the clamping leg reaches the open position by operating the operating element, the clamping leg engages with the triggering element, so that the clamping leg can be held in the open position by the triggering element, and thus the clamping leg can be prevented from undesirably swinging back to the clamping position from the open position. The triggering element and the clamping spring can form a closed force system in the open position of the clamping leg. If the open position of the clamping leg is reached, then, accordingly, the operating element can be moved again away from the clamping leg of the clamping spring against the operating direction of the operating element, at which time the clamping leg does not follow the operating element. Thus, in the open position itself, the operating element can be positioned spaced apart from the clamping leg of the clamping spring. If the clamping leg is held in the open position by the triggering element, the operating element can preferably be moved back again to the intermediate position against the operating direction, so that in the open position of the clamping leg, no effective connection is formed between the operating element and the clamping leg. By means of the swinging movement of the triggering element, the clamping leg can be disengaged from the triggering element again, so that the clamping leg swings back to the clamping position and clamps the conductor to be connected on the busbar. The pivoting movement of the triggering element can be triggered by the conductor to be connected itself, in such a way that when the conductor to be connected is inserted into the conductor connection space through the conductor inlet opening, the conductor strikes against the triggering element in the region of the pressure surface of the triggering element, and thus triggers the tipping movement or pivoting movement of the triggering element. By means of the tipping movement or pivoting movement of the triggering element, the effective connection between the triggering element and the clamping leg of the clamping spring can then be released, in such a way that the triggering element releases the clamping leg, so that the clamping leg can pivot automatically in the direction of the conductor to be connected by its spring force. If, for example, the conductor to be connected has too small a conductor cross-section and not enough force can be applied to the pressure surface of the triggering element by means of this conductor, so that the triggering element cannot be triggered by the conductor to be connected, then according to the present invention it is provided that the triggering element can also be triggered by the operating element. For this purpose, the triggering element has a triggering arm.With the aid of the tool, the operating element can then move again from the intermediate position in the operating direction, whereby the operating element can apply a force in the operating direction of the operating element to the trigger arm. By applying the force in the operating direction to the trigger arm, a tipping movement or pivoting movement of the trigger element in the insertion direction or in the operating direction is initiated, whereby the effective connection between the trigger element and the clamping leg of the clamping spring can be released in such a way that the trigger element releases the clamping leg, so that the clamping leg can pivot automatically in the direction of the conductor to be connected by its spring force. Thus, the trigger element can be triggered not only by the conductor to be connected but also by the operating element, whereby the clamping leg can be disengaged from the trigger element and can then be pivoted into the clamping position. Therefore, after operating the clamping leg to move it from the clamping position to the open position, the operating element does not move back to its initial position but first moves back to the intermediate position in which the operating element is still sunk in the operating recess. Only after the trigger element has been triggered by the conductor to be connected or by the operating element does the operating element move back to its initial position in which the upper side of the operating element is arranged flush with the outer surface of the housing. The resetting of the operating element to the initial position can be achieved by the spring force of the clamping leg of the clamping spring in such a way that when the clamping leg moves from the open position to the clamping position, the clamping leg presses against the operating element and thereby moves the operating element against its operating direction to the initial position.
[0007] Preferably, the trigger element can engage with the clamping leg by means of a latching connection in the open position of the clamping leg, such that the trigger element can be latched with the clamping leg in the open position. This latching connection enables the trigger element and the clamping leg to be simply and easily engaged and disengaged. During the transfer of the clamping leg from the clamping position to the open position, by the pushing force of the operating element in the operating direction, the clamping leg can pivot in the direction of the retaining leg so far until the clamping leg can be latched onto the trigger element.
[0008] To construct the catch, at least one protrusion can be constructed on the clamping leg and arranged on the longitudinal edge surface of the clamping leg. The protrusion can be latched onto the undercut of the trigger element in the open position of the clamping leg of the clamping spring. When the clamping leg pivots from the clamping position to the open position, the clamping leg can move with its at least one protrusion in the direction of the holding leg so far that the clamping leg can hook its at least one protrusion into at least one undercut constructed on the trigger element or be latched there. Preferably, the clamping leg has a protrusion on each of its two oppositely constructed longitudinal edge surfaces, and the trigger element preferably also has two oppositely arranged undercuts such that the clamping leg can be latched onto the trigger element through its two longitudinal edge surfaces. This enables the clamping leg to be supported anti-tipping on the trigger element in the open position of the clamping leg. The at least one protrusion is preferably constructed on the clamping leg at a distance from the clamping edge of the clamping leg. For example, the at least one protrusion can be constructed approximately at the middle position of the length of the clamping leg. The at least one protrusion can extend out from the longitudinal edge surface of the clamping leg transversely to the longitudinal extension of the clamping leg.
[0009] The trigger element can preferably be pivotally supported on the holding leg of the clamping spring. Thus, the trigger element can be supported on the metal part of the clamping spring without having to be supported on the plastic part of the housing. The trigger element is preferably constructed as a component independent of the clamping spring. The trigger element can be detachably fixed on the holding leg of the clamping spring, especially detachably hooked and / or clipped onto the holding leg. The trigger element can then pivot relative to the holding leg of the clamping spring that is fixedly positioned in the housing. When assembling the wiring device, the trigger element can be pre-assembled on the clamping spring and positioned in the wiring device as a unit. In the assembled state, the trigger element and the clamping spring can form a pre-tensioned unit. This can avoid a pre-tensioning force acting on the housing of the wiring device.
[0010] To be able to pivotally support the trigger element on the holding leg, a bolt can be constructed on at least one longitudinal edge surface of the holding leg, and the bolt can engage into an opening constructed on the trigger element. This enables the trigger element to be simply assembled on the clamping spring. The at least one bolt can form a pivot axis around which the trigger element can pivot. Preferably, the holding leg has two oppositely arranged bolts, so bolts are respectively constructed on the two oppositely arranged longitudinal edge surfaces of the holding leg. The trigger element also preferably has two oppositely arranged openings, and each of the bolts in the bolts can respectively engage into the openings. This enables anti-tipping rotational support of the trigger element on the holding leg of the clamping spring. These bolts preferably extend out from the corresponding longitudinal edge surface of the holding leg transversely to the longitudinal extension of the holding leg.
[0011] The triggering element can be configured such that it can have a base body configured in a U-shape, the base body having a first side wall and a second side wall arranged opposite thereto. These two side walls can laterally delimit a conductor connection space. These two side walls can form a guiding surface for the conductor to be connected when it is inserted into the conductor connection space. When observed along the insertion direction, these two side walls can be configured to be so long that these side walls start from the wall defining the conductor insertion opening of the housing and thus form a continuous guiding portion of the wall of the housing. Therefore, incorrect insertion of the conductor to be connected can be prevented by the two side walls of the triggering element.
[0012] The base body can have a connecting wall extending transversely to the insertion direction, which is used to connect the first side wall and the second side wall, and a pressure surface can be configured on the connecting wall. The connecting wall preferably extends transversely to the insertion direction. The connecting wall can delimit the conductor connection space downward along the insertion direction. Thus, when the conductor is inserted into the conductor connection space, the conductor can purposefully strike against the pressure surface so as to pivot the triggering element and thus release the clamping legs, whereby the clamping legs can automatically pivot from the open position to the clamping position by their spring force.
[0013] At least one holding arm extending substantially transversely to the insertion direction can be formed on the base body, and the triggering element can be swingably supported on the clamping spring through this holding arm. Thus, the swingable support of the triggering element can be configured at a distance from the base body or the side walls of the base body. At least one holding arm can start from one of the side walls of the base body and extend in the direction of the holding leg of the clamping spring. An opening can be configured on at least one holding arm, and at least one bolt of the holding leg of the clamping spring can be hooked or hung into this opening. Preferably, the triggering element has two holding arms extending substantially parallel to each other. Then, the first holding arm can start from the first side wall and extend in the direction of the holding leg, and the second holding arm can start from the second side wall and extend in the direction of the holding leg. Openings can be respectively configured on the two holding arms, and the respective bolts of the holding leg can be respectively engaged into the openings so as to swingably support the triggering element on the holding leg of the clamping spring through the two holding arms.
[0014] The operating element can preferably have a ramp profile, which can cooperate with the triggering arm of the triggering element. The ramp profile can be configured such that when the clamping legs are transferred from the clamping position to the open position, the operating element can be guided past the triggering arm with its ramp profile. For this purpose, the ramp profile can have a guiding inclined surface along which the triggering arm can slide. The ramp profile can be configured on the longitudinal side surface of the operating element.
[0015] The ramp profile may have a shoulder against which the trigger arm of the trigger element can bear after the clamping leg has been transferred from the clamping position to the open position by means of the operating element and after the operating element has moved back against the operating direction into the intermediate position of the operating element. If the triggering of the trigger element is effected by means of the operating element, the operating element can, by moving in the operating direction, apply a pushing force in the operating direction to the trigger arm with the shoulder of its ramp profile, whereby the entire trigger element tilts or pivots and, as a result, the clamping leg can be disengaged from the trigger element. The shoulder can be configured at the guiding bevel, in particular at the edge that limits the guiding bevel downward when viewed in the operating direction. If the operating element moves from the operating position to the intermediate position, the trigger arm can slide along the guiding bevel of the operating element and bear against the shoulder at the end of the guiding bevel.
[0016] In order to reliably move the operating element from the operating position against the operating direction to the intermediate position or the initial position, the clamping spring can have an operating leg by means of which the operating element can move into the intermediate position after the clamping leg has been transferred from the clamping position to the open position. The operating leg can project from the clamping leg. The operating element can have an undercut against which the operating leg can bear. The undercut can be configured on the longitudinal side of the operating element, which longitudinal side is preferably opposite the longitudinal side of the operating element on which the ramp profile is configured. The ramp profile and the undercut are thus preferably configured on different longitudinal sides of the operating element.
[0017] Furthermore, it is possible that the clamping spring has spring legs which can interact with the trigger element such that the trigger element is pre-tensioned in the clamping position of the clamping leg of the clamping spring. The spring legs are preferably arranged and configured such that they press against the trigger element with their spring force against the insertion direction. When viewed along the insertion direction, the spring legs interact with the trigger element below the pressure surface. For this purpose, the spring legs can apply a pushing force to the trigger element against the connecting wall below the conductor connection space. When connecting the conductor, by applying a pushing force on the pressure surface by means of the conductor, the spring legs are deflected along the insertion direction and are thus tensioned, whereby the trigger element is pre-tensioned by means of the spring legs in the clamping position. If the conductor is to be loosened again from the clamping position and thus from the connection device, the spring legs can swing the trigger element back against the insertion direction into its initial position again, so that the trigger element can engage with the clamping leg in order to hold the clamping leg in the open position. The spring legs can thus act as a reset element for the trigger element. Furthermore, by means of the spring legs, the trigger element can be clamped to the clamping spring in the open position, whereby the trigger element and the clamping spring can form a pre-tensioned unit in order to be able to be assembled together in the connection device and in particular on the busbar.
[0018] The spring leg is preferably constructed such that it can extend substantially transversely to the insertion direction starting from the holding leg that clamps the spring.
[0019] The clamping spring can be hooked onto the busbar. Thus, the clamping spring together with the trigger element that is swingably supported on the clamping spring can be hooked onto the busbar as a pre-assembled unit. Thereby, the support of the clamping spring and / or the trigger element on the housing can be minimized as much as possible. The clamping spring can be hooked onto the busbar by its holding leg by constructing a through-hole in the holding leg, and the clamping section of the busbar can be inserted into this through-hole such that the clamping section of the busbar can extend through the through-hole in the holding leg of the clamping spring.
[0020] Furthermore, the object of the present invention can be solved by means of a terminal block, in particular a junction box, which can have at least a wiring device designed and improved as described above.
[0021] The wiring device designed and improved as described above can be part of a terminal block, which can be constructed, for example, as a junction box or a printed circuit board terminal block. The wiring device can also be used in a plug connector.
[0022] Especially when used in a junction box that can be snapped onto a support rail, it is preferably possible to use two or more wiring devices constructed and improved as described above. Description of the Drawings
[0023] The present invention will be described in detail below with reference to the drawings according to preferred embodiments.
[0024] Wherein:
[0025] Figures 1A to 1C shows a schematic view or a cross-sectional view of the wiring device according to the present invention when the clamping leg of the clamping spring is transferred from the clamping position to the open position,
[0026] Figures 2A to 2D shows in Figures 1A to 1C a schematic view or a cross-sectional view of the wiring device shown therein, wherein the operating element is in the intermediate position and the clamping leg of the clamping spring is in the open position,
[0027] Figure 3A and Figure 3B shows in Figures 1A to 1C a schematic view or a cross-sectional view of the wiring device shown therein when connecting a conductor, and
[0028] Figure 4A and Figure 4B shows in Figures 1A to 1C a schematic view or a cross-sectional view of the wiring device shown therein when a conductor is connected, wherein the clamping leg of the clamping spring is in the clamping position. Detailed Description of the Preferred Embodiments
[0029] shown Figures 1A to 4B shows a wiring device 100 according to the present invention. The wiring device 100 includes a housing 110. The housing 110 can be constructed of an insulating material, such as a plastic material. The housing 110 has a conductor insertion opening 111 through which a conductor to be connected can be inserted into the housing 110 along an insertion direction E so as to be connectable to the wiring device 100.
[0030] A busbar 112 and a clamping spring 113 are positioned in the housing 110. By means of the clamping spring 113, the conductor L inserted into the housing 110 can be clamped on the busbar 112 and thus be wired. The busbar 112 has a clamping section 114 on which the conductor L to be connected can be clamped by means of the clamping spring 113 and thus be wired. The busbar 112 further has a support section 115 which extends at an angle of 90° relative to the clamping section 114.
[0031] The clamping spring 113 is configured as a helical torsion spring. The clamping spring 113 has a retaining leg 116 and a clamping leg 117. The clamping leg 117 is pivotable relative to the retaining leg 116 so as to move the clamping leg 117 into a clamping position and an open position. The clamping leg 117 has a clamping edge 118 at its free end section, which is visible in a cross-sectional view, and the clamping edge clamps the conductor L to be connected on the clamping section 114 of the busbar 112 in the clamping position of the clamping leg 117.
[0032] Viewed along the insertion direction E of the conductor L, a conductor connection space 150 formed between the clamping section 114 of the busbar 112 and the clamping leg 117 of the clamping spring 113 is defined downward by a pressure surface 120 of a trigger element 119. The trigger element 119 is detachably connected to the clamping spring 113, in particular pivotally supported on the clamping spring 113.
[0033] The trigger element 119 has a pressure surface 120 pointing in the direction of the conductor insertion opening 111, against which the conductor L strikes when inserted into the conductor connection space 150. If the conductor L strikes the pressure surface 120, a pivotal movement or tipping movement V of the trigger element 119 along the insertion direction E is triggered, as depicted in Figure 3A and 3B as shown.
[0034] The triggering element 119 has a base body 121 configured in a U-shape, which has two side walls 122A, 122B extending parallel to each other, and a connecting wall 123 connecting the two side walls 122A, 122B to each other. The two side walls 122A, 122B extend in the insertion direction E. The connecting wall 123 extends transversely to the insertion direction E. A pressure surface 120 pointing in the direction of the conductor insertion opening 111 is configured on the connecting wall 123. The connecting wall 123 delimits a conductor connection space 150 downward along the insertion direction E. The two side walls 122A, 122B laterally delimit the conductor connection space 150, so that the conductor L to be connected can be prevented from being incorrectly inserted. The two side walls 122A, 122B form a lateral guiding portion for the conductor L to be connected in the direction towards the pressure surface 120. The side walls 122A, 122B adjoin the wall 124 of the housing 110 that delimits the conductor insertion opening 111, and starting from the wall 124, extend to the connecting wall 123 that delimits the conductor connection space 150 downward. Therefore, after leaving the conductor insertion opening 111, the conductor L to be connected is directly laterally guided by the side walls 122A, 122B of the triggering element 119 over the entire length of the conductor connection space 150 up to the pressure surface 120.
[0035] In addition, the triggering element 119 has two holding arms 125A, 125B that extend substantially parallel to each other. The first holding arm 125A starts from the first side wall 122A and extends towards the holding leg 116 of the clamping spring 113, and the second holding arm 125B starts from the second side wall 122B and extends towards the holding leg 116 of the clamping spring 113. The two holding arms 125A, 125B start from the two side walls 122A, 122B and extend substantially transversely to the insertion direction E.
[0036] In addition, the triggering element 119 has a triggering arm 137. The triggering arm 137 interacts with the operating element 139 of the connection device 100. The triggering arm 137 is connected to the first holding arm 125A. Therefore, the triggering arm 137 is only arranged on one side of the triggering element 119 here. The triggering arm 137 starts from the holding arm 125A and extends in the direction of the operating element 139. The triggering arm 137 is configured in a bent shape. In the design shown here, the triggering arm 137 is configured to be bent substantially in an S-shape.
[0037] In particular Figures 2A to 2DShows the case where the clamping legs 117 of the clamping spring 113 are in the open position. In the open position, the trigger element 119 engages with the clamping legs 117 of the clamping spring 113 to hold the clamping legs 117 in the open position. This is achieved by a latching between the trigger element 119 and the clamping legs 117. To construct this latching, in the design shown here, the clamping legs 117 of the clamping spring 113 each have protrusions 127A, 127B on their two longitudinal edge surfaces 126 (only one of the two longitudinal edge surfaces 126 is visible here). The protrusions 127A, 127B extend at a right angle from the respective longitudinal edge surfaces 126. In addition, the trigger element 119 has two oppositely configured undercuts 128A, 128B, and in the open position of the clamping legs 117, the two protrusions 127A, 127B of the clamping legs 117 can be hooked or latched into the undercuts respectively. The two undercuts 128A, 128B each have the shape of a recess. The two undercuts 128A, 128B are constructed on the two holding arms 125A, 125B of the trigger element 119, so the first undercut 128A is constructed on the first holding arm 125A, and the second undercut 128B is constructed on the second holding arm 125B. The two protrusions 127A, 127B are constructed at a distance from the clamping edge 118 such that the clamping legs 117 are not just latched or held in position by their clamping edge 118 in the open position.
[0038] The trigger element 119 is constructed as a component independent of the clamping spring 113, wherein the trigger element 119 is detachably fixed to the clamping spring 113. The trigger element 119 is pivotally supported on the holding legs 116 of the clamping spring 113 by its two holding arms 125A, 125B. The trigger element 119 can pivot relative to the position-fixed holding legs 116.
[0039] To construct the pivotable support, in the design shown here, the holding legs 116 each have pins 130A, 130B on their two oppositely arranged longitudinal edge surfaces 129 (only one longitudinal edge surface is visible here). Openings 131A, 131B are respectively constructed on the two holding arms 125A, 125B of the trigger element 119, and each of the two pins 130A, 130B engages into the openings. The two pins 130A, 130B constitute the swing axis of the trigger element 119, and the trigger element 119 can swing around this swing axis. The pins 130A, 130B extend transversely to the longitudinal extension of the holding legs 116 from the respective longitudinal edge surfaces 129 of the holding legs 116.
[0040] To transfer the clamping legs 117 of the clamping spring 113 from the clamping position to the open position, the operating element 139 is moved along the operating direction B by means of a tool W inside the operating recess 140 of the housing 110, as shown in Figures 1A to 1C As shown. By the displacement movement of the operating element 139, the operating element 139 presses against the clamping leg 117 with its operating section 141, moving it away from the clamping section 114 of the conductor L or the busbar 112, so that the clamping leg 117 pivots in the direction of the retaining leg 116. The operating element 139 exerts a pushing force on the clamping leg 117 along the operating direction B, moving the clamping leg 117 in the direction of the retaining leg 116 so far that the clamping leg 117 engages with the triggering element 119 and thus is in the open position and held there. The operating element 139 is linearly movably supported in the operating recess 140 of the housing 110.
[0041] Viewed along the operating direction B, the operating element 139 has a ramp profile 147 above its operating section 141. The ramp profile 147 is formed on the first longitudinal side 148A of the operating element 139. As can be seen especially in Figure 1C As shown, the ramp profile 147 has a guiding inclined surface 149 along which the triggering arm 137 of the triggering element 119 can slide. As shown in Figures 1A to 1C As shown, when the clamping leg 117 is transferred from the clamping position to the open position, the operating element 139 is guided past the triggering arm 137 with its ramp profile 147, where the triggering arm 137 can bend out laterally. Figures 1A to 1C The situation where the operating element 139 is in the operating position is shown.
[0042] As long as the clamping leg 117 reaches the open position and engages with the triggering element 119, the operating element 139 can be moved against the operating direction B to an intermediate position, as shown in Figures 2A to 2D As shown. In the intermediate position, the operating element 139 is spaced apart from the clamping leg 117 of the clamping spring 113 such that the operating section 141 of the operating element 139 is not in effective connection with the clamping leg 117. In the open position, the conductor connection space 150 is released so that the conductor L to be connected can be inserted into the conductor connection space 150 through the conductor insertion opening 111.
[0043] In this intermediate position, the triggering arm 137 abuts against the shoulder 151 of the ramp profile 147 of the operating element 139. When the operating element 139 moves from the operating position (as shown in Figures 1A to 1C As shown) to the intermediate position (as shown in Figures 2A to 2D As shown), the triggering arm 137 slides along the guiding inclined surface 149 until the triggering arm abuts against the shoulder 151 below the guiding inclined surface 147, as shown inFigure 2D as can be seen.
[0044] In order to enable the operating element 139 to be easily reset to the intermediate position, an operating leg 138 is formed on the clamping spring 113, as can be seen in Figure 2C the sectional view of. The operating leg 138 projects from the clamping leg 117. The operating leg 138 is blanked out from the material of the clamping leg 117 and bent out of the plane of the clamping leg 117. The operating leg 138 bends out from the clamping leg 117 in the direction of the operating element 139.
[0045] The operating element 139 has an undercut 152 against which the operating leg 138 abuts in the operating position and the intermediate position of the operating element 139. The undercut 152 is formed on the second longitudinal side 148B of the operating element 139, which is opposite to the first longitudinal side 148A of the operating element 139 on which a ramp profile 147 is formed. Thus, the ramp profile 147 and the undercut 152 are formed on different longitudinal sides 148A, 148B of the operating element 139. Viewed along the operating direction B, the undercut 152 is formed above the operating section 141. The undercut 152 forms a step on the operating element 139.
[0046] If the clamping leg 117 is in the open position and the operating element 139 is in the intermediate position, the conductor L to be connected can be inserted into the conductor connection space 150. By positioning the operating element 139 in the intermediate position, it is shown to the user that the clamping leg 117 is in the open position at this time. In the intermediate position, the operating element 139 sinks into the operating notch 140 such that the upper side 145 of the operating element 139 is arranged just not to be flush with the outer surface 146 of the housing 110, as can be seen in Figures 2A to 2D as can be seen.
[0047] In Figure 3A , 3B the wiring of the conductor L is shown. When the conductor L to be connected is inserted into the conductor connection space along the insertion direction E, the conductor L to be connected strikes against the pressure surface 120 of the trigger element 119. Thereby causing the trigger element 119 to perform a tipping movement or a pivoting movement V along the insertion direction E, whereby the two protrusions 127 of the clamping leg 117 can be disengaged from the two undercuts 128A, 128B of the trigger element 119. Thereby, the clamping leg 117 is disengaged from the trigger element 119, such that the clamping leg 117 can automatically swing away from the trigger element 119 or the holding leg 116 by its restoring force or its spring force and pivot in the direction of the conductor L inserted into the conductor connection space 150, so that the conductor L can be clamped on the clamping section 114 of the bus bar 112, as shown in Figure 4A , 4B as shown.
[0048] If the conductor cross-section of the conductor L to be connected is, for example, too small such that the conductor L cannot exert sufficient force on the pressure surface 120, the triggering element 119 can also be triggered by means of the operating element 139. For this purpose, as can be seen in Figure 3A and Figure 3B , the operating element 139 moves from the intermediate position along the operating direction B by means of the tool W. Thereby, the shoulder 151 of the ramp profile 147 presses against the triggering arm 137, thereby causing the triggering arm 137 to move along the operating direction B. By this movement of the triggering arm 137, a pivoting movement or tipping movement V of the triggering element 119 along the insertion direction E is initiated, whereby the two protrusions 127 of the clamping leg 117 can be decoupled from the two undercuts 128A, 128B of the triggering element 119. Thereby, the clamping leg 117 is disengaged from the triggering element 119, such that the clamping leg 117 can automatically swing away from the triggering element 119 or the holding leg 116 by its restoring force or its spring force, and pivot in the direction of the conductor L inserted into the conductor connection space 150, so that the conductor L can be clamped on the clamping section 114 of the busbar 112, as shown in Figure 4A , 4B .
[0049] Figure 4A , 4B shows the clamping leg 117 in the clamping position, and at this time the conductor L is connected. Here, the operating element 139 moves against the operating direction B so far that the triggering arm 137 is no longer engaged with the ramp profile 147. By means of the operating leg 138 of the clamping spring 113 and / or the clamping leg 117 of the clamping spring 113, such a large pushing force can be exerted on the operating element when the clamping leg 117 is reset from the open position to the clamping position, such that the operating element 139 can automatically reset to the Figure 4A , 4B shown initial position.
[0050] The operating element 139 has a latching projection 142. Viewed along the operating direction B, the latching projection 142 is arranged on the operating element 139 above the operating section 141. The latching projection 142 is arranged on the first longitudinal side 148A of the operating element 139, on which a ramp profile 147 is also formed. In the middle position of the operating element 139 and thus in the open position of the clamping leg 117, the latching projection 142 latches or rear-hooks onto the lower edge surface 143 of the operating recess 140 of the housing 110, such that the operating element 139 remains sunk in its middle position in the operating recess 140 in the open position, whereby the open position can be indicated to the user by the position of the operating element 139. If, when operating the triggering element 119 by means of the conductor L or the operating element 139, the clamping leg 117 is released from the latching with the triggering element 119, the clamping leg 117 of the clamping spring 113 presses against the operating element 139 by its spring force, such that the operating element 139 moves upward against the operating direction B until the upper side 145 of the operating element 139 with the tool engagement portion 144 is positioned flush with the outer surface 146 of the housing 110, as visible in Figure 4A , 4B . Thus, in the clamping position of the clamping leg 117, the operating element 139 terminates flush with the outer surface 146 of the housing 110 with its upper side 145. In this position, the latching projection 142 of the operating element 139 can latch into a cutout (not visible here) formed in the operating recess 140 of the housing 110 in order to hold and latch the operating element 139 in this position.
[0051] In order that, when the conductor L is released, the triggering element 119 also pivots back again into its initial position (as shown in Figures 1A to 1C ), the clamping spring 113 has a spring leg 136 which acts as a reset element. The spring leg 136 is formed on the holding leg 116. Viewed along the insertion direction E, the spring leg 136 acts together with the triggering element 119 below the pressure surface 120. The spring leg 136 exerts a pushing force on the triggering element 119 against the connecting wall 123 below the conductor connection space 150. When wiring the conductor L, by applying a pushing force on the pressure surface 120 by means of the conductor L, the spring leg 136 is deflected along the insertion direction E and thus tensioned, whereby the triggering element 119 is pre-tensioned by means of the spring leg 136 in the clamping position, as in Figure 4A , 4BAs shown. If the conductor L is to be loosened again from the clamping position and thus from the connection device 100, the spring leg 136 can swing the trigger element 119 back against the insertion direction E into its initial position again, so that the trigger element 119 can engage with the clamping leg 117 via its two undercuts 128A, 128B to hold the clamping leg in the open position. In the open position, the clamping of the trigger element 119 with the clamping spring 113 can also be achieved by engaging the spring leg 136 and the projection 127 of the clamping leg into the undercuts 128A, 128B of the trigger element 119, whereby the trigger element 119 and the clamping spring 113 can form a pre-tensioned unit in order to be able to be assembled together in the connection device 100 and in particular on the busbar 112.
[0052] In the design shown here, the holding leg 116 has a first section 132, a second section 133 and a third section 134. These sections 132, 133, 134 are each constructed at an angle to one another. A bolt 130 is constructed on the first section 132 in order to pivotably hold the trigger element 119 on the holding leg 116. The first section 132 extends at an angle between approximately 20
[0053] ° and 70° with respect to the insertion direction E. The second section 133 adjoins the first section 132. The second section 133 extends substantially transversely to the insertion direction E. The clamping spring 113 has the second section 133 located on the support section 115 of the busbar 112. The spring leg 136 is punched out of the second section 133 such that the spring leg 136 can spring relative to the second section 133. In addition, a through-hole 135 is constructed in the second section 133, through which the clamping section 114 of the busbar 112 is guided. Thereby, the clamping spring 113 can be hooked onto the busbar 112. With the third section 134, which adjoins the second section 133 and extends in the insertion direction E, the holding leg 116 lies flat against the clamping section 114 of the busbar 112.
[0054] Explanation of reference numerals
[0055] 100 Connection device
[0056] 110 Housing
[0057] 111 Conductor insertion opening
[0058] 112 Busbar
[0059] 113 Clamping spring
[0060] 114 Clamping section
[0061] 115 Support section
[0062] 116 Holding leg
[0063] 117 Clamping leg
[0064] 118 Clamping edge
[0065] 119 Trigger element
[0066] 120 Pressure surface
[0067] 121 Substrate
[0068] 122A, 122B Side walls
[0069] 123 Connecting wall
[0070] 124 Wall
[0071] 125A, 125B Holding arms
[0072] 126 Longitudinal edge surface
[0073] 127A, 127B Protrusions
[0074] 128A, 128B Undercuts
[0075] 129 Longitudinal edge surface
[0076] 130A, 130B Bolts
[0077] 131A, 131B Openings
[0078] 132 First section
[0079] 133 Second section
[0080] 134 Third section
[0081] 135 Through hole
[0082] 136 Spring leg
[0083] 137 Trigger arm
[0084] 138 Operating leg
[0085] 139 Operating element
[0086] 140 Operating notch
[0087] 141 Operating section
[0088] 142 Latching projection
[0089] 143 Lower edge surface
[0090] 144 Tool engagement part
[0091] 145 Upper side
[0092] 146 Outer surface
[0093] 147 Ramp profile
[0094] 148A, 148B Longitudinal sides
[0095] 149 Guide ramp
[0096] 150 Conductor connection space
[0097] 151 Shoulder
[0098] 152 Undercut
[0099] E Introduction direction
[0100] B Operating direction
[0101] V Pivoting movement
[0102] L Conductor
[0103] W Tool
Claims
1. A connection device (100) for connecting an electrical conductor (L), comprising: A housing (110) comprising a conductor introduction opening (111), a manifold (112) disposed in the housing (110), A clamping spring (113) is arranged in a housing (110) and has a retaining leg (116) and a clamping leg (117), wherein: The clamping leg (117) can be moved into a clamping position and an open position. an operating element (139), by means of which the clamping leg (117) can be transferred from a clamping position into an open position by moving the operating element (139) in an operating direction (B), and A trigger element (119) is engaged with the clamping leg (117) in the open position of the clamping leg (117) in such a way that the clamping leg (117) is held in the open position by means of the trigger element (119), and the trigger element is supported on the clamping spring (113) in such a way that it can be pivoted so that when the conductor (L) to be connected is inserted into the conductor introduction opening (111) along the introduction direction (E), the trigger element (119) can be operated by the pressure surface (120) of the trigger element (119) in such a way that the clamping leg (117) is disengaged from the trigger element (119) and is pivoted from the open position to the clamping position, wherein the trigger element (119) has a trigger arm (137) which can be operated by means of an operating element (139) in such a way that the clamping leg (117) is disengaged from the trigger element (119) and is pivoted from the open position to the clamping position.
2. The wiring device (100) according to claim 1, characterized in that: In the open position, the triggering element (119) latches with the clamping leg (117).
3. The wiring device (100) according to claim 2, characterized in that: At least one projection (127A, 127B) is formed on the clamping leg (117) and is arranged on a longitudinal edge surface (126) of the clamping leg (117), which latches on an undercut (128A, 128B) of the triggering element (119) in the open position.
4. The wiring device (100) according to any one of claims 1 to 3, characterized in that: The triggering element (119) is pivotably mounted on a retaining leg (116) of a clamping spring (113).
5. The wiring device (100) according to claim 4, characterized in that: A bolt (130) is formed on at least one longitudinal edge surface (129) of the retaining leg (116), which bolt engages in an opening (131A, 131B) formed on the triggering element (119).
6. The wiring device (100) according to any one of claims 1 to 5, characterized in that: The triggering element (119) has a U-shaped main body (121) having a first side wall (122A) and a second side wall (122B) arranged opposite thereto.
7. The wiring device (100) according to claim 6, characterized in that: The base body (121) has a connecting wall (123) extending transversely to the introduction direction (E) and serving to connect the first side wall (122A) to the second side wall (122B), wherein the pressure surface (120) is formed on the connecting wall (123).
8. The wiring device (100) according to claim 6 or 7, characterized in that: At least one holding arm (125A, 125B) extending substantially transversely to the insertion direction (E) is formed on the base body (121) and the triggering element (119) is pivotably supported on the clamping spring (113) by means of the holding arm.
9. The wiring device (100) according to any one of claims 1 to 8, characterized in that: The operating element (139) has a ramp profile (147) which interacts with a triggering arm (138) of the triggering element (119).
10. The wiring device (100) according to claim 9, characterized in that: The ramp profile (147) has a shoulder (151) against which the trigger arm (138) of the trigger element (119) rests after the clamping leg (117) is transferred from the clamping position to the open position by means of the operating element (139) and the operating element (139) is subsequently moved back to the middle position of the operating element (139) in the opposite direction of the operating direction (B).
11. The wiring device (100) according to claim 10, characterized in that: The clamping spring (113) has an actuating leg (138) by which the actuating element (139) is moved into an intermediate position after the clamping leg (117) has been transferred from the clamping position into the open position.
12. The wiring device (100) according to any one of claims 1 to 11, characterized in that: The clamping spring (113) has a spring leg (136) which interacts with the triggering element (119) in such a way that the triggering element (119) is prestressed in the clamped position.
13. The wiring device (100) according to claim 12, characterized in that: The spring leg (136) extends from the holding leg (116) transversely to the insertion direction (E).
14. The wiring device (100) according to any one of claims 1 to 13, characterized in that: The clamping spring (113) is hung on the manifold (112).
15. A connection terminal, in particular a connection box, having at least one connection device (100) configured according to any one of claims 1 to 14.