Spring clamp connection and conductor connection terminal

Abstract

Spring clamp connection (3) with - a busbar (4) which has a clamping area (13), and - a cage spring (5) having a contact leg (6) for contact with a first side of the busbar (4), a spring arc (7) adjoining the contact leg (6), and a clamping leg (8) adjoining the spring arc (7), wherein the clamping leg (8) has an actuating section (9) adjoining the spring arc (7) and extending away from the busbar (4), and a clamping section (10) bent away from the actuating section (9) and extending back towards the busbar (4), wherein the clamping section (10) has a recess (11) which is bounded by a transverse web (12) at the free end of the clamping section (10), wherein the busbar (4) with its clamping section (10) extends through the recess (11), and the transverse web (12) together with the clamping section (10) forms a clamping point for clamping an electrical conductor, characterized in that a pivotable mounted release element (20),the device comprises a release section (23) designed for pivoting the release element (20) by force exerted by an inserted, clampable electrical conductor and a locking section (22), wherein the locking section (22) in a locking pivot position of the release element (20) forms a stop for a holding contour (12, 30, 31) of the clamping section (10) when the cage tension spring (5) is in the open position in which the clamping point is opened by displacement of the actuating section (9) towards the mounting leg (6) and spacing of the cross web (12) from the clamping area (13) of the busbar (4), and wherein the release section (23) in the locking pivot position forms a rotation lock that prevents pivoting of the release element (20), and for releasing the rotation lock by force exerted by an inserted, clampable electrical conductor on the release section (23) is designed to withstand the applied triggering forceto release the release element (20) for pivoting away from the clamping section (10) to lift the stop.

Description

[0001] The invention relates to a spring-loaded terminal connection with a busbar having a clamping section, and with a cage clamp spring having a contact leg for contacting a first side of the busbar, a spring arch adjoining the contact leg, and a clamping leg adjoining the spring arch. The clamping leg has an actuating section adjoining the spring arch and extending away from the busbar, and a clamping section bent away from the actuating section and extending back towards the busbar. The clamping section has a recess defined by a transverse web at the free end of the clamping section, the busbar with its clamping section extending through the recess, and the transverse web, together with the clamping section, forms a clamping point for clamping an electrical conductor.

[0002] The invention further relates to a conductor connection terminal with an insulating housing and with a spring-loaded terminal connection in the insulating housing.

[0003] Spring-cage terminals are used to connect an electrical conductor to a terminal formed between the clamping leg of a spring clamp and a busbar. To connect the electrical conductor, the clamping spring can be pushed away from the busbar by the electrical conductor during direct connection, counteracting the force of the clamping spring. This is possible for rigid conductors, but not for stranded or multi-wire conductors.

[0004] There is a need for a self-retaining spring clamp connection in an open position for connecting electrical conductors. It is often desired that conductor terminals be delivered with the spring clamp connection open at the factory.

[0005] WO 2021 / 105280 A1 discloses a direct plug-in terminal for connecting an electrical conductor with a busbar and a clamping spring acting as a compression spring as well as a retaining spring for locking the clamping spring in an open position.

[0006] Based on this, it is the object of the present invention to provide an improved spring-loaded terminal connection and a conductor connection terminal with such a spring-loaded terminal connection.

[0007] The object is achieved with the spring-loaded terminal connection having the features of claim 1 and the conductor connection terminal having the features of claim 13. Advantageous embodiments are described in the subclaims.

[0008] It is proposed that the spring-loaded terminal connection has a pivotably mounted trigger element, which has a trigger section designed to pivot the trigger element by applying force to an inserted electrical conductor to be clamped, and a locking section, wherein the locking section forms a stop for a holding contour of the clamping section in a locking pivot position of the trigger element when the cage tension spring is in the open position, in which the clamping point is opened by displacing the actuating section in the direction of the contact leg and spacing the crossbar from the clamping section of the busbar, and wherein the trigger section forms a rotation lock in the locking pivot position, which prevents pivoting of the trigger element, and is designed to release the rotation lock by applying a trigger force exerted on the trigger section by an inserted electrical conductor to be clamped,to release the trigger element for pivoting away from the clamping section to release the stop.

[0009] This creates a cage clamp spring with a latching mechanism in the open position on the clamping leg by means of a pivoting release element. The latching and release by the release element is independent of actuation of the cage clamp spring into the open position using, for example, an actuation lever or actuation tool. The release element can be designed compactly and can also be integrated into existing spring terminal designs.

[0010] A “free end” is understood to be the freely movable end area where the clamping leg ends.

[0011] Numerous variations are possible for the design of the retaining contour. For example, the retaining contour can be designed as a negative contour with a recess or as a positive contour with a protruding tab. The negative contour can be designed as an additional hole (opening) in the clamping section. It is also conceivable that the existing recess in the clamping section, through which the busbar is guided and which serves to accommodate the conductor, is used as a negative contour, so that the crossbar forming the clamping edge acts as the stop. However, a further opening can also be created below the crossbar or above the recess.

[0012] However, an opening in the clamping section is not absolutely necessary. A positive retaining contour, in which a material tab is bent out of the clamping section, is also conceivable. Such a retaining tab could, for example, be bent out of the recess above the busbar. The locking section should be mounted on the upper side of the busbar.

[0013] "Above the busbar" or the "upper side of the busbar" refers to the contact side on which the cage clamp spring rests with its contact leg. This is therefore the side of the busbar facing the actuating section. The "underside of the busbar" is the clamping side opposite the top side, to which the electrical conductor is clamped.

[0014] A retaining tab can also be bent laterally past the busbar, so that the locking section rests on the underside of the busbar and locks into place next to the retaining tabs of the busbar. The locking section can be designed, for example, as a stop tab (locking tab).

[0015] The tripping section can extend transversely to the plane of the busbar. The term "transverse" does not necessarily mean exactly 90° or perpendicular. The tripping section only needs to be aligned with the plane into which an electrical conductor is inserted for connection to the busbar, so that the electrical conductor touches the tripping section. The tripping section is preferably positioned at a 90° angle to the plane of the busbar with a tolerance of ±20°. The relevant reference point for the busbar plane is the area closest to the tripping section or to which the tripping section extends.

[0016] The locking portion may extend away from the trigger portion in a direction toward the clamping portion in its open position.

[0017] The holding contour of the clamping section can be formed by the transverse web delimiting the recess of the clamping section, wherein the locking section projecting into the recess in the locking position forms a stop for the transverse web.

[0018] The clamping section can have a locking opening in the transverse web, in an edge web laterally delimiting the recess or in the region of the clamping section extending from the recess to the actuating section, wherein the locking opening forms the holding contour and the locking section projecting into the locking opening in the locking pivot position forms a stop for the clamping section.

[0019] On the clamping leg, a stop tongue can protrude from the plane of the clamping leg, which forms the holding contour, wherein the locking section is arranged in the locking pivot position between the stop tongue and the actuating section and forms a stop for the stop tongue.

[0020] A pivot bearing can be formed between the locking section and the release section of the release element. The release element can be pivotally mounted around the pivot bearing on the underside of the busbar, which is opposite the top side of the busbar with the contact leg of the cage clamp spring resting thereon, at a distance from the busbar and, in the open position of the cage clamp spring, adjacent to the clamping section.

[0021] The position adjacent to the clamping section means that the pivot bearing is arranged closer to the clamping section than to the trigger section of the trigger element.

[0022] The release element can be arranged with its locking section at a distance from the busbar and extend toward the clamping section in the open position of the cage clamp spring. A pivot bearing and a lever arm section extending at a distance from the busbar in the conductor insertion direction can be connected to the locking section, which merges into the release section extending transversely to the busbar.

[0023] The triggering section can extend past the busbar to the first side of the busbar and have a retaining lug which engages with the busbar or the contact leg and prevents pivoting of the triggering section in the locking pivot position of the triggering element, wherein the retaining lug can be unlocked by a triggering force exerted on the triggering section with an inserted electrical conductor.

[0024] The trigger element can be spring-elastic and designed to exert a restoring force on the trigger element, by means of which the locking section is displaced into the locking pivot position with the clamping section.

[0025] A spring-elastic return section can extend from the triggering section towards the busbar and be mounted on the busbar.

[0026] The trigger element can be U-shaped, with the trigger section merging into the lever arm section, which transitions into the locking section via the pivot bearing, and the spring arm section, on the other hand. The trigger section extends transversely to the longitudinal direction of the busbar.

[0027] The U-shaped tripping element and its tripping section are arranged in a conductor containment chamber defined by the clamping leg, the underside of the busbar, and the lever arm section. A lateral boundary can optionally be provided by the inner walls of an insulating housing for improved conductor guidance.

[0028] The conductor connection terminal has an insulating housing and at least one previously described spring-loaded terminal in the insulating housing, wherein the insulating housing has a conductor insertion opening leading to the triggering section of the triggering element.

[0029] The release element can be pivotably mounted within the insulating housing with its pivot bearing. The insulating housing thus forms a counterbearing for the pivot bearing. The bearing can, for example, be a pivot bearing around a fixed axis or a floating bearing along a movement path.

[0030] The insulating housing may have an actuating opening leading to the actuating section of the clamping leg.

[0031] The actuating opening can be designed to accommodate an actuating tool or an actuating element movably installed in the actuating opening. An actuating tool, such as a screwdriver, can be inserted into the actuating opening, or an actuating element can be movably installed.

[0032] The actuating tool or actuating element can be brought into contact with the actuating section of the cage clamp spring to pivot the clamping section into the open position and lock it into the locking section. For this purpose, the actuating section is displaced toward the contact leg.

[0033] However, the locking mechanism is in principle independent of the type of actuation.

[0034] In general, in the context of this application, the words “a / an”, unless expressly defined otherwise, are not to be understood as a number, but as an indefinite article with the literal meaning of “at least one”.

[0035] The invention permits various embodiments and is described in more detail below using an exemplary embodiment. Shown are: Fig. 1 - Side sectional view of a first embodiment of a conductor terminal in the closed position; Fig. 2 - perspective view of the closed conductor terminal from Fig. 1; Fig. 3 - Side sectional view of the conductor terminal from Fig. 1 in the locked open position; Fig. 4 - Perspective view of the opened and locked conductor terminal from Fig. 3; Fig. 5 - Perspective view of a holding and release element for the conductor connection terminal made of Fig. 1 to 4; Fig. 6 - Side sectional view of a second embodiment of a conductor terminal in the closed position; Fig. 7 - perspective view of the closed conductor terminal from Fig. 6; Fig. 8 - Side sectional view of the conductor terminal from Fig. 6 in the locked open position; Fig. 9 - Perspective view of the opened and locked conductor terminal from Fig. 8; Fig. 10 - Perspective view of a holding and release element for the conductor connection terminal made of Fig. 6 to 9; Fig. 11 - Perspective view of the clamping spring for the second embodiment of the conductor connection terminal from Fig. 6 to 9; Fig. 12 - Side sectional view of a third embodiment of a conductor terminal in the closed position; Fig. 13 - perspective view of the closed conductor terminal from Fig. 12; Fig. 14 - Side sectional view of the conductor terminal from Fig. 12 in the locked open position; Fig. 15 - Perspective view of the opened and locked conductor terminal from Fig. 12; Fig. 16 - Perspective view of a holding and release element for the conductor connection terminal made of Fig. 12 to 15; Fig. 17 - Perspective view of the clamping spring for the third embodiment of the conductor connection terminal from Fig. 12 to 15.

[0036] Fig. 1 shows a side sectional view of a first embodiment of a conductor connection terminal 1 in the closed position.

[0037] The conductor connection terminal 1 has an insulating housing 2 into which a spring-loaded terminal connection 3 is installed.

[0038] The spring-loaded terminal connection 3 comprises a busbar 4 and a cage clamp 5. The cage clamp 5 has a contact leg 6 resting on the top side of the busbar 4. Adjoining the contact leg 6 is a spring arch 7, which transitions into a clamping leg 8. The clamping leg 8 has an actuating section 9 extending away from the contact leg 6 and a clamping section 10 bent from the distal end of the actuating section 9, remote from the spring arch 7, and extending toward the contact leg 6 or the busbar 4. The clamping section 10 has a recess 11 defined by a transverse web 12, through which the busbar 4 extends.

[0039] The busbar 4 has a clamping area 13, which can be formed, for example, as a protrusion from the busbar plane, as shown. The clamping area 13, together with the crossbar 12, forms a clamping point for clamping an electrical conductor to the busbar 4 between the crossbar 12 and the clamping area 13 using the force of the cage clamp spring 5.

[0040] The bulged clamping area 13 of the busbar 4 merges into a free busbar end 14 projecting from the plane of the busbar 4, which is spanned by the busbar 4 in the area in front of the clamping area 13.

[0041] To move the cage clamp 5 into the open position, the insulating housing 2 can have an actuating opening 15. A guide wall 16 can be arranged in the actuating opening 15 to guide an actuating tool, such as a screwdriver, inserted into the actuating opening 15 to the actuating section 9 of the cage clamp 5. With the aid of the actuating tool, an actuating force can be exerted on the actuating section 9 in the direction of the contact leg 6 in order to move the actuating section 9 toward the contact section 6.

[0042] The busbar 4 can have a side wall 17 bent from the busbar plane and a base plate 18 protruding from the side wall 17 at a distance from the clamping area 13.

[0043] For locking and unlocking the spring-loaded terminal connection 3 locked in the open position, a clamping yoke 20 is provided as a separate part, which is pivotally mounted on the busbar 4 and / or the insulating housing 2 by means of a pivot bearing 21 adjacent to the clamping section 10 and the crosspiece 12. For example, the clamping yoke 20 can be inserted into a bearing opening 21b of the side wall 17 with a laterally projecting bearing pin 21a (see Fig. 2) to form the pivot bearing 21.

[0044] The tension yoke 20 forms a locking section 22 with its free end extending from the pivot bearing 21 to the free end arranged next to the clamping section 10. On the diametrically opposite side, the tension yoke 20 extends in the conductor insertion direction L from the free end region of the clamping section 10 approximately parallel to the busbar 4 to the base plate 18. Remote from the clamping section 10 of the cage clamp 5, the tension yoke 20 has a release section 23 pointing towards the busbar 4. The release section 23 is perpendicular to the conductor insertion direction L, so that a release force can be exerted on the release section 23 by an inserted electrical conductor, with which release force a pivoting of the tension yoke 20 about the pivot bearing 21 is effected.This allows the clamping leg 8 locked to the locking section 22 to be released when a force is exerted on the release section 23 by an electrical conductor to be clamped, which is inserted into the conductor insertion opening 24 in the insulating housing 2.

[0045] The locking section 22 of the clamping yoke 20 is matched to the clamping section 10 of the clamping leg 8 such that the locking section 22 forms a stop for the crossbar 12 at the free end of the clamping yoke 21 when the cage clamp spring 5 is in the open position. In the open position, the clamping point is opened by displacing the actuating section 9 in the direction of the contact leg 6 and by spacing the crossbar 12 away from the clamping area 13 of the busbar 4. The clamping section 10 of the cage clamp spring 5 is thus locked to the locking section 22.

[0046] In order to prevent the tension yoke 20 from pivoting automatically in the open position, the release section 23 has a retaining lug 25 protruding from the plane of the release section 23 towards the clamping section 10 or the adjacent area of ​​the busbar 4, which has the clamping area 13. This forms a rotation lock for the tension yoke 20.

[0047] Between this area of ​​the busbar 4 and the lever arm section 26 of the clamping yoke 21 extending towards the pivot bearing 21, the insulating housing 2 can have a protruding stop 27 with which the freedom of movement of the clamping yoke 20 is restricted.

[0048] The insulating housing 2 can have a centering pin 28, wherein the cage tension spring 5 surrounds the centering pin 28 and is mounted with its spring arch 7 on the centering pin 28. This restricts movement of the cage tension spring 5 in the insulating housing 2.

[0049] Fig. 2 shows a perspective view of the closed conductor terminal 1 from Fig. 1.

[0050] It is clear that the tension yoke 20 with a bearing pin 21a dips into a bearing opening 21b in the side wall 18 to form the pivot bearing 21 for the tension yoke 20.

[0051] It is also clear that the free end of the locking section 22, which adjoins the pivot bearing 21, protrudes toward the plane of the crosspiece 12. It can terminate with one or, as shown, several narrower locking bars. The narrower end reduces the frictional force required for unlocking.

[0052] It can also be seen that the recess 11 in the clamping section 10 of the clamping leg 8 is limited by edge webs 19 and the transverse web 12.

[0053] Fig. 3 shows a side sectional view of the conductor connection terminal 1 from Fig. 1 in the locked open position.

[0054] It can be seen that the locking section 22 extends into the recess 11 of the clamping section 10 and forms a stop for the crossbar 12 defining the recess 11. The clamping bracket 20 is pivoted into the locking pivot position and engages beneath the busbar 4. It is latched to the busbar 4 with its retaining lug 25. In this locking pivot position, the vertical lever arm section 26 of the clamping bracket 20 rests against the stop 27. The force exerted by the clamping section 10 on the clamping bracket 20 is thus absorbed not only by the pivot bearing 21, but also by the stop 27.

[0055] Alternatively, it is conceivable that the retaining lug 25 is formed as a recess or opening in the trigger section 23. A protruding pin or retaining lug can then be formed on the busbar 4, which engages the recess or opening of the trigger section 23 for locking.

[0056] Fig. 4 shows a perspective view of the opened and locked conductor connection terminal 1 from Fig. 3.

[0057] The clamping section 10 is latched to the clamping bracket 20 by the free end of the locking section 22 resting against the crosspiece 12 and forming a stop for the clamping leg 8. Automatic pivoting of the clamping bracket 20 is prevented by the fact that the release section 23 engages under the busbar 4 and is latched to the busbar 4 with the retaining lug 25.

[0058] If an electrical conductor is now inserted into the conductor insertion opening 24 and pushed through the recess 11, the free end of the electrical conductor reaches the release section 23 arranged in alignment F of the conductor insertion opening 24. The release section 23 is thus displaced downwards in the conductor insertion direction L and the retaining lug 25 is disengaged from the busbar 4. The spring-loaded clamping yoke 20 thus pivots, so that the stop of the locking web 29 for the cross web 12 is removed. The clamping leg 8 can thus pivot back into the clamping position due to the spring force of the cage clamp spring 5.

[0059] Fig. 5 shows a perspective view of a holding and release element, ie the clamping yoke 20 for the conductor connection terminal 1 from Fig. 1 to 4.

[0060] The holding and release element 20 is formed as an L-shaped sheet metal part, with the horizontal section in the illustration forming the release section 23 and the vertical section in the illustration forming the lever arm section 26 with the bearing pins 21b and the adjoining locking section 22. The locking section 22 can, as shown, have two locking webs 29. Other locking contours are equally conceivable. "Horizontal" here refers to the width direction of the lever arm section 26, and "vertical" refers to the longitudinal direction of the lever arm section 26.

[0061] It is clear that two bearing pins 21b protrude diametrically from each other at the edge of the lever arm section 26.

[0062] The retaining lug 25 on the upper side of the trigger section 23 protrudes towards the lever arm section 26.

[0063] Fig. Figure 6 shows a side sectional view of a second embodiment of a conductor terminal 1 in the closed position. This is essentially comparable to the first embodiment, so that the explanations for Fig. 1. In contrast to the first embodiment, an additional locking opening 30 is provided in the crosspiece 12.

[0064] Fig. 7 shows a perspective view of the closed conductor terminal 1 from Fig. 6.

[0065] It can be seen that the transverse web 12 has a locking opening 30. The locking section 22 is configured on the locking opening 30 such that the locking web 29 at the free end of the locking section 22 extends into the locking opening 30 in the locking position. This locks the clamping leg 8 to the locking section 22. This forms a negative retaining contour (negative contour) on the clamping section 10.

[0066] Fig. 8 shows a side sectional view of the conductor connection terminal 1 from Fig. 6 in the locked open position and Fig. 9 a perspective view of the opened and locked conductor connection terminal 1.

[0067] It can be seen that the release section 23 is latched to the busbar 4 by means of the retaining lug 25. The latching web 29 at the free end of the locking section 22 engages the locking opening 30 to form a stop for the clamping leg 8. The spring force applied by the cage clamp 5 to the clamping yoke 20 in this latched open position is absorbed by the pivot bearing 21 formed by the bearing pins 21a and the bearing openings 21b, as well as the stop 27.

[0068] When an electrical conductor is inserted into the conductor insertion opening 24 and pushed through the recess 11, the free end of the electrical conductor reaches the release section 23 arranged in alignment F with the conductor insertion opening 24. The release section 23 is thus displaced downward in the conductor insertion direction L, and the retaining lug 25 is disengaged from the busbar 4. The rotation lock is thus released. The spring-loaded clamping yoke 20 pivots, so that the stop of the locking web 29 for the cross web 12 is released. The clamping leg 8 can thus pivot back into the clamping position due to the spring force of the cage clamp spring 5.

[0069] Fig. 10 shows a perspective view of a holding and release element, ie the clamping yoke 20 for the conductor connection terminal 1 from Fig. 6 to 9.

[0070] The tension yoke 20 is again L-shaped. It differs from the embodiment in Fig. 5 through the free end of the locking section 22, which has a central locking web 29.

[0071] Fig. 11 shows a perspective view of the cage clamp 5 for the second embodiment of the conductor connection terminal 1 from Fig. 6 to 9.

[0072] The cage tension spring 5 is loop-shaped, as is typical for the spring, and consists of the contact leg 6, the spring arch 7, the actuating section 9, and the clamping section 10 bent back toward the contact leg 6. The clamping section 10 has the recess 11, which is defined by spaced-apart, parallel edge webs 19 and a transverse web 12 at the free end.

[0073] The crosspiece 12 has a rectangular locking opening 30 which is designed to lock the clamping leg 8 to the locking section 22.

[0074] Fig. 12 shows a side sectional view of a third embodiment of a conductor connection terminal 1 in the closed position.

[0075] In this embodiment, the clamping section 10 has a positive holding contour (positive contour) in the form of a stop tongue 31, which projects from the crossbar 12 to the busbar 4 or the contact leg 6 adjacent thereto.

[0076] The locking section 22 of the tension bracket 20 in turn has at least one locking web 29 at its free end, which forms a stop for the stop tongue 31 in the locked open position.

[0077] Fig. 13 shows a perspective view of the closed conductor terminal 1 from Fig. 12.

[0078] It can be seen that the stop tongue 31 is cut out of the material of the crossbar 12 in the central area of ​​the crossbar 21 and projects out of the plane of the crossbar 12 towards the contact leg 6 or spring arch 7.

[0079] The tension yoke 20 is in turn mounted with its projecting bearing pins 21a in the bearing openings 21b of the side walls 17 of the busbar 4.

[0080] Fig. 14 shows a side sectional view of the conductor connection terminal 1 from Fig. 12 in the locked open position and Fig. 15 a perspective view of the opened and locked conductor connection terminal 1.

[0081] The central locking web 29 at the free end of the locking section 22 projects towards the crossbar 12 in the open position or locking pivot position and forms a stop for the stop tongue 31 projecting in the opposite direction to the lever arm section 26. The locking section 22 ends directly below the crossbar 12.

[0082] The tensioning yoke 20 is in turn locked with the retaining lug 25 on the release section 23 on the busbar 4.

[0083] Fig. 16 shows a perspective view of a holding and release element in the form of the clamping yoke 20 for the conductor connection terminal 1 from Fig. 12 to 15.

[0084] The locking section 22 terminates in a central locking web 29, which is adapted for locking onto the stop tongue 31. For the embodiment with the stop tongue 31, it is also conceivable that the locking section 22 is not tapered at the free end and thus does not have a specific retaining contour.

[0085] Fig. 17 shows a perspective view of the cage clamp 5 for the third embodiment of the conductor connection terminal 1 from Fig. 12 to 15.

[0086] It can be seen that in the cage tension spring 5 in the crossbar 12 in the central area a stop tongue 31 is exposed and bent out of the plane towards the contact leg 6.

[0087] Other variants are equally conceivable, for example, in which at least one stop tongue 31 is bent at one or both edge regions of the crosspiece 12. A variant is also conceivable in which the free end of the clamping section 10, i.e., the crosspiece 12, is bent at its end toward the contact leg 6 to form a stop tongue 31. List of reference symbols 1 conductor connection terminal 2 insulating housings 3 spring-loaded terminal connection 4 busbar 5 cage clamp spring 6 investment legs 7 spring bows 8 clamping legs 9 Operating section 10 clamping section 11 Recess 12 crossbar 13 Clamping area 14 Busbar end 15 Operating opening 16 Guide wall 17 Side wall 18 Base plate 19 Edge bridge 20 tension yokes 21 swivel bearings 21a Bearing journal 21b bearing opening 22 locking section 23 Trigger section 24 conductor entry opening 25 retaining lug 26 Lever arm section 27 stop 28 centering pins 29 Rest bridge 30 locking opening 31 Stop tongue F Escape L Conductor insertion direction QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] WO 2021 / 105280 A1

[0005]

Claims

[1] Spring clamp connection (3) with - a busbar (4) having a clamping area (13), and - a cage tension spring (5) having a contact leg (6) for contacting a first side of the busbar (4), a spring arch (7) adjoining the contact leg (6), and a clamping leg (8) adjoining the spring arch (7), wherein the clamping leg (8) has an actuating section (9) adjoining the spring arch (7) and extending away from the busbar (4), and a clamping section (10) bent away from the actuating section (9) and extending back in the direction of the busbar (4), wherein the clamping section (10) has a recess (11) delimited by a transverse web (12) at the free end of the clamping section (10), wherein the busbar (4) extends with its clamping section (10) through the recess (11), and the transverse web (12) together with the clamping section (10) forms a clamping point for clamping an electrical conductor, characterized bythat a pivotably mounted trigger element (20) which has a trigger section (23) designed to pivot the trigger element (20) by the action of force with an inserted electrical conductor to be clamped, and a locking section (22), wherein the locking section (22) forms a stop for a holding contour (12, 30, 31) of the clamping section (10) in a locking pivot position of the trigger element (20) when the cage tension spring (5) is in the open position, in which the clamping point is opened by displacement of the actuating section (9) in the direction of the contact leg (6) and spacing of the crossbar (12) from the clamping area (13) of the busbar (4), and wherein the trigger section (23) in the locking pivot position forms a rotation lock which prevents pivoting of the trigger element (20),and is designed to release the rotation lock by the action of a release force exerted on the release section (23) by an inserted electrical conductor to be clamped, in order to release the release element (20) for pivoting away from the clamping section (10) to release the stop. [2] Spring-loaded terminal connection (3) according to claim 1, characterized by that the triggering section (23) extends transversely to the plane of the contact leg (6) resting on the busbar (4). [3] Spring-loaded terminal connection (3) according to claim 1 or 2, characterized by that the locking portion (22) extends away from the triggering portion (23) in a direction towards the clamping portion (10) in its open position. [4] Spring-loaded terminal connection (3) according to one of claims 1 to 3, characterized bythat the holding contour of the clamping section (10) is formed by the transverse web (12) delimiting the recess (11) of the clamping section (10), wherein the locking section (22) projecting into the recess (11) in the locking position forms a stop for the transverse web (12). [5] Spring-loaded terminal connection (3) according to one of claims 1 to 3, characterized by in that the clamping section (10) has a locking opening (30) in the transverse web (12), in an edge web (19) laterally delimiting the recess (11) or in the region of the clamping section (10) extending from the recess (11) to the actuating section (9), wherein the locking opening (30) forms the holding contour and the locking section (22) projecting into the locking opening (30) in the locking pivot position forms a stop for the clamping section (10). [6] Spring-loaded terminal connection (3) according to one of claims 1 to 3, characterized bythat on the clamping leg (8) a stop tongue (31) projects from the plane of the clamping leg (8), which forms the holding contour, wherein the locking section (22) is arranged in the locking pivot position between the stop tongue (31) and the actuating section (9) and forms a stop for the stop tongue (31). [7] Spring-loaded terminal connection (3) according to one of claims 1 to 6, characterized by that a pivot bearing (21) is formed between the locking section (22) and the triggering section (23) of the triggering element (20), wherein the triggering element (20) is rotatably mounted around the pivot bearing (21) on the second side of the busbar (4), which is opposite the first support side of the busbar (4) with the contact leg (6) of the cage tension spring (5) resting thereon, at a distance from the busbar (4) and, in the open position of the cage tension spring (5), adjacent to the clamping section (10). [8] Spring clamp connection (3) according to one of the preceding claims, characterized by that the trigger element (20) with its locking section (22) is arranged at a distance from the busbar (4) and extends towards the clamping section (10) in the open position of the cage tension spring (5), and that a pivot bearing (21) and a lever arm section (26) extending at a distance from the busbar (4) in the conductor insertion direction (L) are connected to the locking section (22), which lever arm section (26) extends in the conductor insertion direction (L) and merges into the trigger section (23) extending transversely to the busbar (4). [9] Spring-loaded terminal connection (3) according to claim 8, characterized byin that the triggering section (23) extends past the busbar (4) to the first side of the busbar (4) and has a retaining lug (25) which engages with the busbar (4) or the contact leg (6) and prevents pivoting of the triggering section (23) in the locking pivot position of the triggering element (20), wherein the retaining lug (25) can be unlocked by a triggering force exerted on the triggering section (23) with an inserted electrical conductor. [10] Spring-loaded terminal connection (3) according to one of the preceding claims, characterized by that the trigger element (20) is spring-elastic and is designed to exert a restoring force on the trigger element (20), by means of which the locking section (22) is displaced into the locking pivot position with the clamping section (10). [11] Spring-loaded terminal connection (3) according to claim 10, characterized bythat a spring-elastic return section extends from the triggering section (23) towards the busbar (4) and is mounted on the busbar (4). [12] Spring-loaded terminal connection (3) according to claim 11, characterized by that the triggering element (20) is U-shaped, wherein the triggering section (23) merges on the one hand into the lever arm section (26), which merges into the locking section (22) via the pivot bearing (21), and on the other hand into the spring arm section, wherein the triggering section (23) extends transversely to the longitudinal direction of the busbar (4) or the contact leg (6). [13] Conductor connection terminal (1) with an insulating housing (2) and with a spring-loaded terminal connection (3) according to one of the preceding claims in the insulating housing (2), wherein the insulating housing (2) has a conductor insertion opening (24) leading to the triggering section (23) of the triggering element (20). [14] Conductor connection terminal (1) according to claim 13, characterized by that the trigger element (20) with its pivot bearing (21) is pivotally mounted in the insulating housing (2). [15] Conductor connection terminal (1) according to claim 13 or 14, characterized by that the insulating housing (2) has an actuating opening (15) which leads to the actuating section (9) of the clamping leg (8). [16] Conductor connection terminal (1) according to claim 15, characterized by that the actuating opening (15) is designed to receive an actuating tool or an actuating element movably installed in the actuating opening.

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