Spring force clamping connection piece and connection terminal

Abstract

The invention relates to a spring-loaded clamping connection, comprising a busbar and a clamping spring, the clamping spring comprising: a clamping leg, which has a clamping edge for connecting an electrical conductor to the busbar; a support leg; and a spring bow which connects the supporting leg to the clamping leg. The invention also relates to a connection terminal having an insulating material housing and such a spring force clamping connection in the insulating material housing.

Description

Technical Field

[0001] The present invention relates to a spring force clamping connector having a busbar and a clamping spring, the clamping spring having: clamping legs having clamping edges for clamping an electrical conductor to the busbar; support legs; and a spring bow connecting the support legs to the clamping legs.

[0002] The present invention further relates to a terminal having an insulating material housing and such a spring force clamping connector in the insulating material housing. Background Art

[0003] Spring force clamping connectors are used to clamp electrical conductors to a clamping site formed between the clamping legs of the clamping spring and the busbar. To clamp the electrical conductor, the clamping spring can be pressed open from the busbar by the electrical conductor against the force of the clamping spring during direct connection. This is feasible for rigid conductors, however, it is not feasible in the case of stranded or braided conductors.

[0004] There is a need to clamp electrical conductors such that the spring force clamping connector is provided in a self-retaining manner in the open position. Here, it is generally desirable to deliver terminals with open spring force clamping connectors from the factory.

[0005] EP 2 768 079 B1 discloses a spring force connection terminal having a busbar for contacting an electrical conductor and a clamping spring for fastening the electrical conductor in the spring force connection terminal. There is provided a retaining mechanism supported on the insulating material housing or connected to the support legs of the clamping spring for locking the clamping spring in the open retaining position, and a movable reset mechanism for pivoting the clamping legs back into the locked state.

[0006] DE 10 2019 109 975 A1 discloses a connection terminal for connecting an electrical conductor, including a housing having a wire introduction opening, a busbar, a clamping spring, and an operating element movably arranged in the housing along an operating direction. The operating direction of the operating element is configured transversely to the wire introduction direction. A retaining element is provided in the wire connection region of the housing, which retains the clamping legs of the clamping spring in the open position and releases the clamping legs in the clamping position. The retaining element has a pressing surface arranged transversely to the wire insertion direction, which can be operated by the wire to be connected in order to release the clamping so as to transfer the clamping legs from the open position to the clamping position. Summary of the Invention

[0007] The object of the present invention is to achieve an improved spring force clamping connection and an improved terminal. In particular, a compact opening retaining element with optimized support should be provided.

[0008] The object is achieved by means of a spring force clamping connection and a terminal having the features of the present invention. Advantageous embodiments are described below.

[0009] It is proposed that the spring force clamping connection has an opening retaining element which is fastened to the busbar by means of a fixing section and has a locking arm and a release section connected to the fixing section, wherein the locking arm has a locking profile which forms a stop for locking a clamping leg which is deflected against the spring force of a clamping spring towards a support leg in the opening retaining position, and wherein the release section is configured to be deflected by an electric wire inserted for clamping onto the busbar so as to displace the elastically springy locking arm and unlock the clamping leg locked at the locking profile in the opening retaining position.

[0010] The opening retaining element, designed as a separate component from the clamping spring and the busbar, enables additional degrees of freedom during construction in order to adapt the locking profile and the release section to a specific clamping spring and installation space. The fastening at the busbar ensures the connection of the opening retaining element to the busbar. The connection can be configured as a fixed, non-detachable connection. However, a detachable connection is also conceivable, for example by pushing the opening retaining element onto the busbar and clamping it firmly in place on the busbar.

[0011] Locking in the sense of the present invention includes a form-fit by means of a stop provided by the locking profile. The locking of the clamping leg at the locking profile takes place in such a way that the locking profile forms a stop for the clamping leg, which stop is pressed against the locking profile by a spring force-based return action and prevents further displacement in the opening retaining position by the locking profile.

[0012] The locking profile of the locking arm can, for example, form a stop for the free clamping end of the clamping leg.

[0013] However, it is also conceivable that the clamping leg has a locking opening and the locking profile of the locking arm is configured to sink into the locking opening and form a stop for the locking edge bounding the locking opening for the clamping leg.

[0014] The busbar can have a wire insertion opening, into which the clamping spring is inserted from the upper side of the busbar by means of its support leg and clamping leg.

[0015] The locking arm can extend from the fixed section fastened at the busbar along the lower side of the busbar opposite to the upper side, passing under the support leg and the clamping leg. The locking protrusion forming the locking profile can bend from the locking arm towards the busbar and the clamping leg.

[0016] The electrical conductor thus penetrates the busbar and the locking arm of the opening holding element is fixed at the busbar by means of its fixed section behind the clamping spring when viewed in the direction of insertion of the conductor. The locking arm then extends below the clamping spring such that there is ultimately a conductor receiving space for the locking arm below the conductor penetration opening.

[0017] Advantageously, the fixed section of the opening holding element is fastened at the busbar and an annularly bent and elastically resilient locking arm is connected to the fixed section. The locking arm can extend from the fixed section fastened at the busbar through between the support leg and the clamping leg through the conductor penetration opening by means of its free end. The locking protrusion forming the locking profile can bend from the locking arm towards the clamping leg.

[0018] The fixed section of the opening holding element can in particular be fastened immovably at the busbar, such that the fixed section cannot perform any relative movement with respect to the busbar. For example, the fixed section can be locked immovably with the busbar or fixed at the busbar by screws, rivets, etc. and / or connected to the busbar by a material-fit connection, such as welding and / or soldering.

[0019] As mentioned, a locking arm is connected to the fixed section. In an advantageous design, the locking arm can be directly connected to the fixed section without any other sections located therebetween, such as a release section for example.

[0020] In an advantageous design, the locking profile can be arranged at a first distance from the fixed section, and the release section can be arranged at a second distance from the fixed section, where the first distance is less than the second distance. For example, the first distance can be at least 10%, at least 20% or at least 30% smaller than the second distance. The first distance is measured here between the midpoints of the fixed section and the locking profile. The second distance is measured between the midpoints of the fixed section and the release section.

[0021] The stop for locking the clamping leg of the locking profile can be located in the middle region of the clamping leg or at the end of the clamping leg.

[0022] The elastically resilient release section can be integrally formed with the elastically resilient locking arm. The locking profile can protrude from the surface formed by the locking arm in its longitudinal extension. A support surface can be formed below the stop formed by the locking profile along the conductor penetration direction for the free end of the conductor to be clamped for insertion.

[0023] The free end of the clamping leg is the end at which the clamping leg terminates and to which no other sections are connected. The free end of the clamping leg can be used as a clamping edge for clamping an electrical conductor.

[0024] The busbar can have a wire insertion opening, and the clamping spring is inserted into the wire insertion opening from the upper side of the busbar by means of its support leg and clamping leg at a first edge region of the wire insertion opening. The clamping spring can spring open towards an opposite second edge region of the wire insertion opening by means of its clamping leg, so as to form a clamping site for clamping the electrical conductor by means of the second edge region and the clamping edge of the clamping leg. The fixed section of the opening holding element can be fastened at the side of the busbar that forms the second edge region. The locking arm can extend from the fixed section fastened to the busbar in the wire insertion direction at a distance from the plane formed by the wire insertion opening below the wire insertion opening towards the clamping spring, so as to form a stop for the clamping leg deflected towards the support leg in the open holding position by means of its locking profile. A release section can be connected to the locking arm, and the release section forms a support surface for the free end of the wire to be clamped below the stop formed by the locking profile in the wire insertion direction.

[0025] Thereby, the locking arm can form a locking plane and the support surface of the release section can form a plane that is below the locking plane in the wire introduction direction. The electrical conductor can sink through the locking arm or be guided laterally past the locking arm for operation until it strikes the support surface.

[0026] The busbar can have a wire insertion opening, and the clamping spring extends into the wire insertion opening by means of the clamping leg and the support leg, wherein the opening holding element has a fixed section that is fastened to the busbar. A spring-elastic locking arm can be connected to the fixed section, and the free end of the locking arm extends towards the clamping spring and forms a stop for the clamping leg deflected towards the support leg in the open holding position.

[0027] The free end of the locking arm can form a locking profile and a release section.

[0028] The locking profile and the release section are thus two functional regions that can overlap. It can be realized, for example, at the free end of the locking arm.

[0029] The wire insertion opening can have a flange that extends in the wire insertion direction away from the plane formed by the wire insertion opening of the busbar, the flange partially or completely bounds the wire insertion opening and has two spaced-apart and opposite flange end walls. The support leg can abut against the first flange end wall. The clamping leg can form a clamping site for clamping the electrical conductor together with the second flange end wall that is opposite to the first flange end wall.

[0030] The opening retaining element can be fastened on the upper side of the busbar and guided through the wire insertion opening. Thereby, a space-saving and stable form-fitting support of the opening retaining element at the busbar is achieved. For this purpose, the opening retaining element can be placed, for example, on the upper side of the busbar by means of its fixing section, without being further connected to the busbar there, and is pressed onto the busbar by means of the support legs in the region of the wire insertion opening. Thereby, the opening retaining element is connected to the busbar in a form-fitting and force-fitting manner.

[0031] The fixing section of the opening retaining element can be fastened at the busbar by clamping (i.e., force-fitting), by form-fitting or by material-fitting.

[0032] The support legs can abut against the busbar and the clamping legs are supported at the busbar.

[0033] The terminal has an insulating material housing and at least one of the above-mentioned spring-force clamping connectors. The insulating material housing has a wire introduction opening for guiding an electrical wire to a clamping site formed between the busbar clamping section of the busbar and the clamping edge of the clamping leg, in order to clamp the introduced electrical wire between the busbar clamping section and the clamping edge.

[0034] The wire introduction opening leads to the clamping site and is oriented such that the electrical wire introduced into the wire introduction opening contacts the release section and displaces the elastically resilient locking arm by the displacement of the release section, in order to unlock the clamping leg locked at the locking profile in the open retaining position.

[0035] The insulating material housing can have an operating opening that opens towards the clamping leg, in order to displace the clamping leg against the spring force of the clamping spring towards the support leg into the open retaining position by means of an operating tool introduced into the operating opening or an operating element movably inserted into the operating opening.

[0036] Generally speaking, in the context of the present application, the word "a", unless explicitly otherwise defined, should not be understood as a numeral, but rather as an indefinite article with the meaning of "at least one". Description of the Drawings

[0037] The present invention allows for different embodiments and is exemplarily explained hereinafter with reference to the drawings according to the embodiments. The drawings show:

[0038] Figure 1 A partial perspective side view of a terminal showing a first embodiment with a spring-force clamping connector in the open retaining position;

[0039] Figure 2 Shows Figure 1 The side view of the terminal in

[0040] Figure 3 Perspective view showing a first embodiment of a spring - force clamping connection in an open - holding position;

[0041] Figure 4 Showing Figure 3 a perspective view of the open - holding element of the spring - force clamping connection in;

[0042] Figure 5 Showing Figure 4 a side view of the open - holding element in;

[0043] Figure 6 Partial perspective side view showing a first embodiment of a spring - force clamping connection in a clamping position and a wire - inserted terminal;

[0044] Figure 7 Showing a terminal having Figure 6 a spring - force clamping connection in a clamping position in;

[0045] Figure 8 Perspective view showing a first embodiment of a spring - force clamping connection in a clamping position with a clamped electric wire;

[0046] Figure 9 Partial perspective side view showing a terminal having a spring - force clamping connection in an open - holding position of a second embodiment;

[0047] Figure 10 Showing Figure 9 a side view of the terminal in;

[0048] Figure 11 Perspective view showing a second embodiment of a spring - force clamping connection in an open - holding position;

[0049] Figure 12 Showing Figure 11 a perspective view of the open - holding element of the spring - force clamping connection in;

[0050] Figure 13 Showing Figure 12 a side view of the open - holding element in;

[0051] Figure 14 Partial perspective side view showing a terminal having a spring - force clamping connection in a clamping position of a second embodiment and an inserted electric wire;

[0052] Figure 15 Showing Figure 14 a side view of the terminal having a spring - force clamping connection in a clamping position in;

[0053] Figure 16 Perspective view showing a second embodiment of a spring force clamping connection in a clamped position with a clamped electrical conductor;

[0054] Figure 17 Partial perspective side view of a terminal showing a third embodiment of a spring force clamping connection in an open holding position;

[0055] Figure 18 Showing Figure 17 Side view of the terminal in;

[0056] Figure 19 Perspective view showing a third embodiment of a spring force clamping connection in an open holding position;

[0057] Figure 20 Showing Figure 19 Perspective view of the open holding element of the spring force clamping connection in;

[0058] Figure 21 Showing Figure 20 Side view of the open holding element in;

[0059] Figure 22 Partial perspective side view of a terminal showing a third embodiment of a spring force clamping connection in a clamped position and an inserted electrical conductor;

[0060] Figure 23 Showing having Figure 22 Side view of a terminal with a spring force clamping connection in a clamped position in;

[0061] Figure 24 Perspective view showing a third embodiment of a spring force clamping connection in a clamped position with a clamped electrical conductor;

[0062] Figure 25 Partial side view of a terminal showing a fourth embodiment of a spring force clamping connection in an open holding position;

[0063] Figure 26 Showing a fourth embodiment of a spring force clamping connection in a clamped position together with an inserted electrical conductor and the Figure 25 Partial side view of the terminal in;

[0064] Figure 27 Front perspective view showing a fourth embodiment of a spring force clamping connection in an open holding position;

[0065] Figure 28Stereo rear view showing the fourth embodiment of the spring-force clamping connection in the open-holding position;

[0066] Figure 29 Stereo front view showing the fourth embodiment of the spring-force clamping connection in the clamping position;

[0067] Figure 30 Stereo rear view showing the fourth embodiment of the spring-force clamping connection in the clamping position. Detailed implementation

[0068] Figure 1 Stereo side view showing a partial view of the terminal 1. The terminal 1 has an insulating material housing 2, and the first embodiment of the spring-force clamping connection 3 is inserted into the insulating material housing. The spring-force clamping connection 3 is in the open-holding position.

[0069] The spring-force clamping connection 3 has a busbar 4 and a clamping spring 5. The clamping spring 5 is configured as a U-shaped bent annular spring, which has a support leg 6, a clamping leg 7, and a spring bow 8 connecting the support leg 6 and the clamping leg 7.

[0070] The busbar 4 has a wire insertion opening 9 in the busbar plane. The clamping spring 5 is inserted into the wire insertion opening 9 by means of its support leg 6 and clamping leg 7. The support leg 6 abuts against the first end wall 10 bounding the wire insertion opening 9. At the second end wall 11 of the wire insertion opening 9 opposite to the first end wall 10, a clamping connection plate 12 on the lower side of the busbar 4 is bent into the wire receiving recess 13 of the insulating material housing 2. The lower side of the busbar 4 is the side of the busbar 4 facing away from the spring bow 8. The clamping connection plate 12 has a contact edge 14 protruding towards the clamping leg 7, and the contact edge together with the clamping edge 15 of the clamping leg 7 forms a clamping portion for clamping an electrical wire, and the clamping edge can be present at the free end of the clamping leg 7 as shown, for example.

[0071] The insulating material housing 2 has a wire introduction opening 16, which extends along the wire introduction direction L towards the wire insertion opening 9 and leads there. Next to the wire introduction opening 16, the insulating material housing 2 has an operation opening 17, which leads to the clamping leg 7. The wire introduction opening 16 and the operation opening 17 can be separated from each other by a partition wall 18.

[0072] In the operating opening 17, the operating element 19 can be movably inserted as shown. The operating element loads the clamping leg 7 in the displaced state shown and displaces the clamping leg 7 towards the support leg 6 into the open position by the operating force transmitted via the operating element 19. It is conceivable to use a movable, pivotable or rotatable operating element 19. Alternatively, the operating opening 17 can also remain empty and be used to accommodate a separate operating tool, such as a screwdriver, which is introduced into the operating opening 17 for operation and then removed again.

[0073] The wire insertion opening 9 is laterally delimited by the edge tab 20. The free end support section 21 of the support leg 6 is narrower than the section extending from it to the spring bow 8, and this section can be supported on the busbar 4. The narrower free end support section 21 is inserted into the wire insertion opening delimited by the edge tab 20 and can be bent slightly back from the clamping leg 7.

[0074] The end section of the clamping leg 7 extending into the wire insertion opening 9 is also narrower than the section connecting it to the transition to the spring bow 8 in order to extend into the wire insertion opening 9 delimited by the edge tab 20.

[0075] An opening retaining element 22 is provided in the wire receiving recess 13. The opening retaining element abuts against the lower side of the busbar 4 adjacent to the first end wall 10 and the support leg 6 by means of the fixing section 23. A locking arm 24 that bends away from the busbar 4 is connected to the horizontal fixing section 23, and the locking arm has a locking profile 25. The locking profile 25 is freely cut from the material of the locking arm 24 and bends towards the busbar 4 in the form of a locking projection. The locking arm 24 transitions into a release section 26, and the release section is located in the alignment line F of the wire introduction opening 16 below the wire insertion opening 9.

[0076] In the shown open retaining position, the locking profile 25 forms a stop for the clamping leg 7 between the locking profile 25 and the alignment line of the locking arm 24 or the support leg 6 in the open position of the clamping spring 4. The free end of the clamping leg 7 having its clamping edge 15 is thus locked at the opening retaining element 22 by the locking profile 25 in such a way that the clamping leg is pressed against the locking profile 25 by the restoring force of the clamping spring 4. Thereby, the clamping spring 4 is held in the open retaining position.

[0077] Optionally, the insulating material housing can also have a bridge piece insertion opening 27 that leads to a bridge piece opening 28 in the busbar 4, where a bridge piece spring 29 can be inserted into the bridge piece opening 28 for spring pressure electrical contact of the bridge piece or other conductive plug-in elements at the busbar 4.

[0078] Figure 2 shownFigure 1 Side view of the terminal 1 in

[0079] It can be seen that the opening retaining element 22 is arranged on the lower side of the busbar 4 by means of its fixing section 23. The fixing section 23 transitions into the locking arm 24 via a bend at the free end of the end support section 21 of the support leg 6, and the locking arm extends away from the busbar 4 and the clamping spring 5 into the wire receiving recess 13. The free end support section 21 is bent towards the locking arm 24 here and supports the locking arm 24.

[0080] In the shown open retaining position, the free end of the clamping leg 7 extends into the free space formed between the locking profile 25 bent towards the busbar 4 and the locking arm 24. Here, the free end of the clamping leg 7 with the clamping edge 15 strikes against the upper end of the locking profile 25 and is locked in the open retaining position by means of the stop.

[0081] The locking arm 24 extending away from the busbar 4 transitions into a release section 26 after bending, and the release section extends into the wire receiving recess 13 at a distance below the wire insertion opening 9. The release section 26 is transverse to the alignment line F and forms a receiving bottom for an electrical wire that is inserted into the wire introduction opening 16 and passed through the wire insertion opening 9 along the wire introduction direction L and inserted into the wire receiving recess 13.

[0082] Figure 3 Perspective view showing a first embodiment of the spring force clamping connection 3 in the open retaining position.

[0083] It can be seen that the free end of the clamping leg 7 is pressed against the locking profile 25 positioned in the pivoting path of the clamping leg 7 by the restoring force of the clamping spring 5. The locking profile 25 forms a stop that prevents the clamping leg 7 from springing further away from the support leg 6 into the clamping position or the closed position, thereby approximately locking the clamping leg 7 at the opening retaining element 22.

[0084] Furthermore, it is clear that the locking profile 25 can be configured as a locking projection that is freely cut from the sheet material of the locking arm 24 and bent from the plane of the locking arm 24 towards the clamping spring 5 and the wire insertion opening 9.

[0085] Furthermore, it can be seen that a clamping connection plate 12 is bent out at the second end wall 11 of the wire insertion opening 9, and the clamping connection plate is arranged inclined towards the clamping spring 5 or the locking arm 24 and provides a protruding contact edge 14 for clamping the electrical wire. The clamping connection plate 12 can be integrally formed from the material of the busbar 4. The clamping connection plate can be formed by free cutting and bending during the manufacture of the wire insertion opening 9.

[0086] FromFigure 4 is visible in Figure 3 a perspective view of the opening retaining element 22 of the spring force clamping connection 3 in and from Figure 5 whose side view is visible in

[0087] The opening retaining element 22 is formed from sheet material as a one-piece element. The fixing section 23 and the releasing section 26 are formed at opposite ends of the opening retaining element 22 which are opposite to each other. The fixing section 23 and the releasing section 26 extend almost parallel to each other and have a height difference in opposite directions. The fixing section and the releasing section are connected to each other by the locking arm 24 which extends obliquely. It is visible that the locking profile 25 bends out from the plane of the locking arm 24 on the side of the releasing section 26 such that a U-shaped locking projection is formed.

[0088] It is visible that the fixing section 23 can have optional fixing holes 30. Thereby, the fixing section 23 can be connected to the bus bar 4 in a form-fitting, force-fitting and / or material-fitting manner by introducing the fixing elements 32 into the associated fixing holes 30 respectively and connecting them to the bus bar 4. For this purpose, for form-fitting and force-fitting connection, rivets or screws can be guided through the fixing holes 30 and the corresponding aligned fixing holes in the bus bar 4. However, it is also conceivable to perform material-fitting welding by means of welding points introduced into the fixing holes 30.

[0089] Figure 6 a partial perspective side view of the terminal 1 with the spring force clamping connection 3 in the clamping position and the inserted electrical conductor 31.

[0090] The electrical conductor 31 is inserted into the wire receiving recess 13 through the wire introduction opening 16 and the wire insertion opening 9 along the wire introduction direction L. Here, the electrical conductor impinges on the releasing section 26 in the wire insertion path of the alignment line F and exerts a releasing force on the opening retaining element 22. The releasing section 26 is displaced downward away from the bus bar 4 by the releasing force acting along the wire insertion direction L and drives the locking arm 24 joined thereto. This causes the locking profile 25 to be displaced downward away from the free end of the clamping leg 7 and the stop to be removed. Thereby, the clamping leg 7 is unlocked and can spring back towards the stripped end of the electrical conductor 31 by the restoring force of the clamping spring 5. The stripped end of the electrical conductor 31 is here between the clamping edge 15 and the contact edge 14 and is clamped to the bus bar 4 by the clamping spring 5 with a clamping force.

[0091] It is clear that the releasing area 26 forms a bottom surface which is positioned approximately parallel to the plane of the wire insertion opening 9 in the insertion path of the electrical conductor 31.

[0092] Figure 7 shows havingFigure 6 Side view of the terminal 1 of the spring-force clamping connection 3 in the clamped position.

[0093] As can be seen here, the locking profile 25 is displaced away from the clamping edge 15 of the free end of the clamping leg 7, such that the clamping leg 7 springs open towards the contact edge 14 and clamps the electrical conductor 31 between the clamping edge 15 and the contact edge 14 onto the busbar 4.

[0094] The opening retaining element 12 is fixed in position by the fixing section 23 at the busbar 4 and the support at the free end support section 21. The locking arm 24 together with the release section 26 forms a spring-elastic element, which is displaced downward away from the clamping edge 15 by the electrical conductor 31 striking the release section 26 in the unlocked clamped position.

[0095] To remove the electrical conductor 31, the operating element 19 can be pressed towards the clamping leg 7 in order to release the clamping edge 15 from the electrical conductor 31 and release it. The electrical conductor 31 can then be pulled out, whereupon the locking arm 24 and the release section 26 spring back towards the busbar 4 into the open retaining position. By the movement of the clamping leg 7 towards the support leg 6, the clamping edge 15 of the clamping leg 7 again reaches behind the locking profile 25, such that the locking profile 25 again forms a stop for the clamping leg 7 and holds it in the open retaining position.

[0096] Figure 8 Perspective view showing a first embodiment of the spring-force clamping connection 3 in the clamped position with the electrical conductor 31 clamped.

[0097] It is clear that the free end of the electrical conductor 31 strikes the release section 26 as it is inserted through the conductor insertion opening 9. Here, the upper edge edge of the locking profile 25, i.e. the U-shaped bent-out locking projection, is displaced downward, i.e. away from the busbar 4 in the conductor insertion direction L, away from the clamping edge 15 of the clamping leg 7, such that the clamping edge 15 can spring open towards the contact edge 14 past the locking profile 25.

[0098] Figure 9 Partial perspective side view showing the terminal 1 of a second embodiment of the spring-force clamping connection 3 in the open retaining position.

[0099] The insulating material housing 2 is configured identically to the embodiment described above, such that reference is made to the above embodiment. The busbar 4 and the clamping spring 5 are also configured similarly.

[0100] The opening retaining element 22 in the second embodiment is configured such that the fixing section 23 is supported on the upper side of the busbar 4. The upper side of the busbar 4 is the side facing the spring bow 8, on which side the clamping spring 5 is substantially positioned and into which the wire insertion opening 16 of the insulating material housing 2 leads. The opening retaining element 22 extends through the wire insertion opening 9 in the transition from the fixing section 23 to the release section 26 and into the wire receiving recess 13. The release section 26 first extends past the support leg 6 and away from the busbar 4 and, after being bent, transitions into a horizontal region which is oriented approximately parallel to the busbar 4 in the alignment line of the wire insertion opening 16.

[0101] In this embodiment, at least one locking arm 24 projects from the root region of the fixing section 23 on the upper side of the busbar 4. The locking arm 24 extends laterally past the narrower region of the clamping leg 7 and below the opposite wider region of the clamping leg 7 and is bent such that the locking arm is directed upward away from the busbar 4 towards the operating opening 17.

[0102] In the illustrated open retaining position, the free end of the locking arm 24 forms a stop for the wider region of the clamping leg 7, which wider region is step-connected in the transition to the narrower region of the clamping leg 7. Thereby, the clamping leg 7 pivoting towards the support leg 6 in the open position is locked at the locking arm 24.

[0103] It can be seen that the fixing section 23 has optional fixing holes 30 for fixing the opening retaining element 22 to the busbar 4.

[0104] Figure 10 Shown Figure 9 is a side view of the terminal block 1.

[0105] It is clear that the locking arm 24 connected to the fixing section 23 bends upward from the plane of the busbar 4 with a bend and guides past the narrower regions of the support leg 6 and the clamping leg 7. The clamping leg 7 displaced towards the support leg 6 is positioned between the support leg 7 and the free end of the locking arm 24 forming the locking profile 25 by means of a step transition from the narrower region to the wider region such that the clamping leg 7 is locked at the locking arm 24. By the restoring force of the clamping spring 5, the clamping leg 7 presses against the locking arm 24 forming the stop.

[0106] Figure 11 A perspective view of the second embodiment of the spring force clamping connection 3 in the open retaining position is shown.

[0107] It can be seen that the fixing section 23 is supported on the upper side of the busbar 4 and is connected form-fittingly, force-fittingly and / or material-fittingly by means of the fixing holes 30. It can for example be welded to the busbar 4 by means of welding points introduced through the fixing holes 30.

[0108] It is clear that a narrower connecting plate projects in the root region of the fixed section 23. The connecting plate extends through the wire insertion opening 9, then widens and transitions into a horizontal section, which is positioned in the alignment line of the wire insertion opening 9. Thereby, a release section 26 is formed. In the edge region of the root region of the fixed section 23, the locking arms 24 are bent away on both sides. The locking arms are bent away from the busbar 4 towards the spring bow 8. The locking arms 24 form a locking profile 25 by means of their free ends. The locking profile engages below the clamping legs in the region of the step in the transition from the narrower region to the wider region and forms a stop for the horizontal step edge of the clamping legs 7.

[0109] From Figure 12 it can be seen Figure 11 a perspective view of the opening holding element 22 of the spring force clamping connection 3 and from Figure 13 a side view can be seen.

[0110] The opening holding element 22 is again formed from sheet material as a one-piece element. The fixed section 23 and the release section 26 are formed at opposite ends of the opening holding element 22 that are opposite to each other. The fixed section 23 and the release section 26 extend almost parallel to each other and have a height difference in opposite directions. The fixed section 23 transitions into an intermediate bent connecting plate after the root region. The connecting plate first extends obliquely away from the plane of the fixed section 23 and terminates in a horizontal section and forms the release section 26. The locking arms 24 project laterally from the root region of the fixed section 23 beside the central connecting plate. The locking arms are bent upwards away from the plane of the fixed section 23 and the release section 26. It forms a locking profile 25 by means of its free end.

[0111] It can be seen that the fixed section 23 can have optional fixing holes 30. Thereby, the fixed section 23 is connected to the busbar 4 in a form-fitting, force-fitting, and / or material-fitting manner. The way is that the fixing elements 32 are respectively introduced into the associated fixing holes 30 and connected to the busbar 4. For this, for form-fitting and force-fitting connections, rivets or screws can be guided through the fixing holes 30 and corresponding aligned fixing holes in the busbar 4. However, it is also conceivable to perform material-fitting welding by means of welding points introduced into the fixing holes 30.

[0112] Figure 14 A partial perspective side view of the terminal block 1 with the spring force clamping connection 3 in the clamping position and the inserted electrical wire 31 is shown.

[0113] It can be seen that the electrical conductor 31 strikes against the release section 26 with its free end and exerts a release force in the conductor insertion direction L. Thereby, the L-shaped bent release section 26 is displaced away from the clamping leg 7 and the free end support section 21 and causes spring stress in the root region. The spring stress causes a reduction in the curvature of the locking arm 24 such that the free end of the locking arm 24 moves away from the locking step of the clamping leg 7 and towards the bus bar 4. Thereby, the stop for the clamping leg 7 is removed and thus the unlocked clamping leg 7 can spring towards the contact edge 14 almost unhindered by the restoring force of the clamping spring 5. Thereby, the electrical conductor 31 is clamped between the clamping edge 15 of the clamping leg 7 and the contact edge 14 of the bus bar 4.

[0114] Figure 15 Shows a Figure 14 side view of the terminal 1 of the spring force clamping connector 3 in the clamped position in

[0115] It is clear that in the unlocked clamped position, the free end of the locking arm 24 forming the locking profile 25 is now below the locking edge in the step of the clamping leg 7 in the transition from the narrower region to the wider region of the clamping leg 7. The clamping leg 7 can thus spring past the locking arm 24.

[0116] Figure 16 Shows a perspective view of a second embodiment of the spring force clamping connector 3 in the clamped position with a clamped electrical conductor.

[0117] It is clear that the upper end edge of the locking arm 24 abuts against the lower edge of the step in the transition from the narrower region to the wider region of the clamping leg 7 and thus no longer impedes the clamping leg 7. The clamping leg 7 is thus unlocked and presses with its clamping edge 15 at the free end of the clamping leg 7 against the electrical conductor 31, which abuts on the opposite side against the protruding contact edge 14 of the clamping connection plate 12. The clamping force of the clamping spring 5 is thus concentrated via the clamping edge 15 and the stripped end of the electrical conductor 31 on the contact edge 14.

[0118] Figure 17 Shows a partial perspective side view of the terminal 1 of a third embodiment of the spring force clamping connector 3 in the open holding position.

[0119] The construction of the insulating material housing 2, the bus bar 4 and the clamping spring 5 is similar to that of the first embodiment, such that Figures 1 to 8 the embodiments thereof with respect to this apply to Figures 17 to 24 .

[0120] The opening and holding element 22 is now connected to the busbar 4 beside the clamping adapter plate 12 on a side different from that in the above-described embodiment by means of its fixing section 23. The opening and holding element is in turn connected to the welding point at the busbar 4 in the corresponding fixing hole 30 in the fixing hole 30 in the fixing section 23 of the busbar 4 and, for example, in a form-fitting manner with a fixing element 32.

[0121] Locking arms 24 project from the horizontal fixing section 23 that abuts against the busbar 4. The locking arms extend past the rear side of the clamping adapter plate 12 and into the wire receiving recess 13. The locking arms 24 transition into a further horizontal release section 26 at the free end of the opening and holding element 22, which extends in the opposite direction to the fixing section 23 with a height difference. The release section 26 is positioned in the alignment line F of the wire introduction opening 16 below the wire insertion opening 9.

[0122] Between the busbar 4 and the release section 26, locking projections project from the locking arms 24 below the clamping adapter plate 12. The locking projections form a locking profile 25 for locking the clamping leg 7 in the illustrated open and held position. The locking projections 25 are formed at two edge regions of the locking arms 24 such that the locking arms 24 extend downward in a narrower section starting from the root region and transition into a correspondingly narrower release section 26.

[0123] Figure 18 Shown Figure 17 side view of the terminal block in.

[0124] It can be seen that the free end of the clamping leg 7 with the clamping edge 15 abuts against the end edge of the locking projection, i.e., the locking profile 25, by the restoring force of the clamping spring 7. Thereby, the locking profile 25 forms a stop for the clamping leg 7, which is locked in the open and held position by the opening and holding element 22.

[0125] It can be seen that the busbar 4, the locking projections 25, and the release section 26 extend almost parallel to each other and at a distance from each other in three mutually offset planes. The height plane of the locking projections 25 is thus coordinated with the clamping leg 7 such that the end edge of the locking projections 25 is at the height of the free end of the clamping leg 7 in the open position of the clamping spring 5 and forms a stop for the free end of the clamping leg 7, in which the clamping leg 7 is deflected towards the support leg 6.

[0126] Figure 19 Perspective view showing a third embodiment of the spring-loaded clamping connection 3 in the open and held position.

[0127] It can be seen that the support leg 6 projects through the wire insertion opening 9 by means of its narrower free end support section 21 and is supported at the first end wall 10 of the wire insertion opening 9.

[0128] It is also clear that the free end of the clamping leg 7 strikes against the end edge of the locking projection 25 and the clamping leg 7 is locked in this way.

[0129] The opening holding element 22 is connected to the bus bar 4 at the lower side of the bus bar 4 by means of its fixing section 23 by means of the fixing element 32. For this purpose, a screw can be inserted into the fixing hole 30 of the fixing section 23 and screwed into the blind hole introduced on the lower side of the bus bar 4. However, it is also possible to use the fixing element 32 in the form of a welding point introduced into the fixing hole 30 to fasten the opening holding element 22 to the bus bar 4. Other types of form-fitting, force-fitting and / or material-fitting fixation, for example by means of clamping elements that engage the bus bar from below and above, are also conceivable.

[0130] From Figure 20 it can be seen Figure 19 a perspective view of the opening holding element 22 of the spring force clamping connection 3 and from Figure 21 it can be seen a side view.

[0131] The opening holding element 22 is formed from sheet material as a one-piece element. The fixing section 23 and the release section 26 are formed at opposite ends of the opening holding element 22 that are opposite one another. The horizontal fixing section 23 and the horizontal release section 26 extend in opposite directions with a height difference almost parallel to one another. They are connected to one another by locking arms 24 that extend substantially or mostly vertically. It can be seen that the locking profile 25 is formed in the height plane between the plane of the fixing section 23 and the plane of the release section 26 in the form of locking projections (also referred to as holding tabs) that bend out from the locking arms 24 in two edge regions. The locking projections 25 project from the plane of the locking arms 24, the plane of which is formed by the connection plane between the transition of the locking arms 24 to the fixing section 23 on one side and to the release section 26 on the other side. The two locking projections 25 are spaced apart from one another with a free space left for inserting the electrical wire 31. The locking projections have, at their ends, raised portions 33 facing one another, by means of which the stop surface for the clamping leg 7 is increased and the electrical wire 31 is kept at a distance from the stop for the support leg 7. The locking projections 25 extend in the same direction as the release section 26.

[0132] The planes of the fixing section 23, the locking protrusion (i.e., the locking profile 25), and the release section 26 are oriented almost parallel to each other. The locking protrusion 25 can, however, also be optionally bent relative to the plane of the fixing section 23, provided that this is required for aligning the stop face with the clamping leg 7. Similarly, the plane of the release section 26 can be bent relative to the plane of the fixing section 23, in particular in order to coordinate the orientation of the release section 26 with the alignment line F of the wire insertion opening 16 and to ensure that the inserted electrical wire strikes the release section 26.

[0133] It can be seen that the fixing section 23 can have optional fixing holes 30. Thereby, the fixing section 23 can be connected to the busbar 4 in a form-fitting, force-fitting, and / or material-fitting manner by introducing fixing elements 32 into the associated fixing holes 30 and connecting them to the busbar 4. For this, for form-fitting and force-fitting connections, rivets or screws can be guided through the fixing holes 30 and corresponding aligned fixing holes in the busbar 4. However, it is also conceivable to use material-fitting welding by means of welding points introduced into the fixing holes 30. However, it is also conceivable that in this embodiment and also in other embodiments, an adhesive is used between the fixing section 23 and the busbar 4.

[0134] Figure 22 A partial perspective side view of the terminal 1 showing the third embodiment of the spring-force clamping connection 3 in the clamping position and the inserted electrical wire 31.

[0135] The electrical wire 31 is inserted into the wire insertion opening 16 in the wire insertion direction L, and the wire insertion opening leads to the wire penetration opening 9 in the form of a channel. Thereby, the stripped end of the electrical wire 31 extends through the wire penetration opening 9 and is introduced into the wire receiving recess 13. The stripped end of the electrical wire 31 extends between the spaced-apart locking protrusions of the locking profile 25 towards the release section 26 in order to strike there with its free front end. Thereby, a release force is applied to the release section 26 in the wire insertion direction L, and the release section pivots the locking arm 24 engaging therewith together with its locking profile away from the plane of the busbar 4 or the plane of the wire penetration opening 9 and away from the clamping edge 15 downwards. Thereby, the stop for the clamping leg 7 of the locking profile 25 is removed and the clamping leg 7 can spring onto the stripped end of the electrical wire 31 by the restoring force of the clamping spring 5. The electrical wire 31 is conductively clamped to the busbar between the clamping edge 15 and the contact edge 14 here.

[0136] Figure 23 Shows having Figure 22 A side view of the terminal 1 with the spring-force clamping connection 3 in the clamping position in

[0137] It is clear here that the stop edge of the locking profile 25 is displaced downward along the wire insertion direction L away from the clamping edge 15 of the clamping leg 7. This is achieved by the electrical wire 31, which strikes against the release section 26 and presses the release section open along the wire insertion direction L.

[0138] Since the locking profile 25 only locks the lower edge region of the free end of the clamping leg 7 in the open holding position, a small displacement of the release section 26 and thus of the locking profile 25 is sufficient to remove the stop and unlock the clamping leg 7.

[0139] Figure 24 Stereogram showing a third embodiment of the spring-force clamping connector 3 in the clamped position with a clamped electrical wire 31.

[0140] It is clear here that the plane of the locking profile 25 is below the clamping edge 15 when viewed in the direction of extension of the electrical wire 31 or the clamping leg 7 towards its free end having the clamping edge 15. The locking profile 25 thus no longer obstructs the clamping leg 7, such that the clamping leg loads the electrical wire 31 with its clamping edge 15 and presses it against the contact edge 14 of the busbar 4. The locking arm 24 is displaced by the displacement of the release section 26 away from the busbar 4, thereby driving the locking profile 25.

[0141] Figure 25 Partial side view showing a fourth embodiment of the terminal block 1 with the spring-force clamping connector 3 in the open holding position.

[0142] The construction of the insulation housing 2 and the clamping spring 5 is again similar in principle to the above-described embodiments, such that the previous embodiments are equally applicable. The busbar 4 has a flange 34 that bounds the wire insertion opening 9, and the flange has a first flange end wall 35 at which the free end support portion 21 of the support leg 6 is supported. The opposing flange end walls form the clamping connection plate 12 and have a protruding contact edge 14. The opposing flange end walls 35, 12 are connected to each other by a flange side wall 36.

[0143] The open holding element 22 is configured as a spring-elastic connection plate, which is fastened at its first end, for example, by means of its fixing section 23 on the underside of the busbar 4 by means of fixing elements 32 in the form of rivets or the like. A locking arm 24 that bends into the wire receiving recess 13 is connected to the fixing section 23, and its free end forms a locking profile 25 with its end edge for locking the free end of the clamping leg 7. The end section of the locking arm 24 that extends into the wire receiving recess 13 furthermore forms a release section 26, which is aligned with the wire introduction opening 19.

[0144] The opening holding element 22 is bent annularly. The locking arm 24 connected to the fixed section 23 first guides past the free end of the clamping leg 7 and, after bending, aligns with the free end of the clamping leg 7 pre-tensioned in the opening holding position. The free end of the locking arm 24 serves as a locking profile 25, which forms a stop in the locked state against which the free end of the clamping leg 7 abuts and is locked there. The section extending from the locking profile 25 at the free end of the locking arm towards the bend provides a release area 26 against which the inserted electrical conductor 31 to be clamped strikes in order to displace the release area 26 and remove the stop formed by the locking profile 25.

[0145] Figure 26 Partial side view of the terminal 1 Figure 25 in a fourth embodiment of the spring force clamping connection 3 in the clamped position.

[0146] The electrical conductor 31 is inserted into the wire introduction opening 16 in the wire insertion direction L, which leads to the wire penetration opening 9. As in the other embodiments, the wire introduction opening 16 is also bounded channel-shaped by a surrounding channel wall and tapers conically in the wire insertion direction L towards the busbar 4. The stripped end of the electrical conductor is introduced through the flange sidewall 36 of the flange 34 through the wire penetration opening 9 bounded by the flange into the wire receiving recess 13. The free end of the electrical conductor 31 strikes against the release section 26 of the opening holding element 22 in the alignment line F and presses it downwards away from the flange 34 by the release force acting in the wire insertion direction L. Thereby, the stop of the end edge of the locking profile 25 formed by the spring-elastic locking arm 24 against the end of the clamping leg 7 is removed, such that it bounces towards the contact edge 14 by the restoring force of the clamping spring 5. Thereby, the electrical conductor 31 is conductively clamped on the busbar 4 at the clamping site between the clamping edge 15 and the contact edge 14.

[0147] From Figure 27 it can be seen a perspective front view of the fourth embodiment of the spring force clamping connection 3 in the opening holding position and from Figure 28 a perspective rear view can be seen.

[0148] It is clear that the wire penetration opening 9 introduced into the busbar plane is bounded on the lower side by the flange 34. The flange forms, by its flange sidewalls 36 arranged parallel and spaced apart from each other and its flange end walls 35, 12 opposite each other transversely thereto, an additional guide channel for the electrical conductor and increases the current-carrying cross-section of the busbar 4.

[0149] The annularly bent spring-elastic opening retaining element 22 is positively fastened at the busbar 4 at its lower side by means of its fixing section 23 by means of a fixing element 32 in the form of a rivet bolt. The free end of the opening retaining element opposite the fixing section 23 is arranged below the flange 34 to form a release section 26. In the opening retaining position, the free end of the clamping leg 7 displaced towards the support leg 6 strikes against the end edge of the trailing end of the opening retaining element 22. The end edge thus forms a locking profile 25 for locking the clamping leg 7. The locking profile 25 is formed at the locking arm 24 in the sense of the present invention, wherein the release section 26 is formed in the region of the locking arm 24 extending below the flange 34 up to the end edge.

[0150] As can be seen from Figure 29 the perspective front view of the fourth embodiment of the spring force clamping connection 3 in the clamped position and as can be seen from Figure 30 the perspective rear view thereof.

[0151] The release section 26 is displaced away from the flange 34 such that the locking profile 25 formed by the end edge at the free end of the annular opening retaining element 22 is now below the plane of the free end of the clamping leg 7 and the clamping edge 15 provided thereon. Thereby, the clamping leg 7 is unlocked and can spring open by the restoring force of the clamping spring 5 towards the clamping connection plate 12, i.e. towards the second flange end wall, over the plane of the release section 26.

[0152] List of reference numerals:

[0153] 1 Terminal

[0154] 2 Insulation housing

[0155] 3 Spring force clamping connection

[0156] 4 Busbar

[0157] 5 Clamping spring

[0158] 6 Support leg

[0159] 7 Clamping leg

[0160] 8 Spring bow

[0161] 9 Wire insertion opening

[0162] 10 First end wall

[0163] 11 Second end wall

[0164] 12 Clamping connection plate

[0165] 13 Wire receiving recess

[0166] 14 Contact edge

[0167] 15 Clamping edge

[0168] 16 Wire inlet opening

[0169] 17 Operating opening

[0170] 18 Partition wall

[0171] 19 Operating element

[0172] 20 Edge tab

[0173] 21 Free end support section

[0174] 22 Opening retaining element

[0175] 23 Fixing section

[0176] 24 Locking arm

[0177] 25 Locking profile / locking projection

[0178] 26 Release section

[0179] 27 Bridging element inlet opening

[0180] 28 Bridging element opening

[0181] 29 Bridging element spring

[0182] 30 Fixing hole

[0183] 31 Electrical wire

[0184] 32 Fixing element

[0185] 33 Protrusion

[0186] 34 Flange

[0187] 35 First flange end wall

[0188] 36 Flange side wall

[0189] F Alignment line

[0190] L Wire insertion direction

Claims

1. A spring force clamping connector (3), comprising: - busbars (4), and - a clamping spring (5), comprising: a clamping leg (7) having a clamping edge (15) for clamping an electrical conductor to the busbar (4); a supporting leg (6); and a spring bow (8) connecting the supporting leg (6) to the clamping leg (7), It is characterized in that The spring force clamping connection (3) has an open holding element (22), which is fastened to the busbar (4) by means of a fixing section (23) and has a locking arm (24) and a release section (26) connected to the fixing section (23), wherein the locking arm (24) has a locking contour (25) which forms a stop for locking the clamping leg (7) deflected toward the support leg (6) in the open holding position against the spring force of the clamping spring (5), and wherein the release section (26) can be deflected by an electrical conductor inserted for clamping onto the busbar (4) and thereby displace the elastically elastic locking arm (24) and unlock the clamping leg (7) locked to the locking contour (25) in the open holding position.

2. The spring force clamping connection (3) according to claim 1, It is characterized in that The locking contour (25) of the locking arm (24) forms a stop for the free clamping end (15) of the clamping leg (7).

3. The spring force clamping connection (3) according to claim 1, It is characterized in that The clamping leg (7) has a locking opening, and the locking contour (25) of the locking arm (24) is designed to penetrate into the locking opening and form a stop for a locking edge of the clamping leg (7) that delimits the locking opening.

4. A spring force clamping connection (3) according to any one of claims 1 to 3, It is characterized in that The busbar (4) has a wire insertion opening (9) and the clamping spring (5) is inserted into the wire insertion opening (9) from the upper side of the busbar (4) by means of its supporting leg (6) and clamping leg (7), wherein the locking arm (24) extends from a fixing section (23) fastened to the busbar (4) and passes below the supporting leg (6) and clamping leg (7) at the lower side of the busbar (4), and a locking projection forming the locking contour (25) is bent from the locking arm (24) towards the busbar (4) and the clamping leg (7).

5. A spring force clamping connection (3) according to any one of claims 1 to 3, It is characterized in that The busbar (4) has a wire insertion opening (9), and the clamping spring (5) is inserted into the wire insertion opening (9) from the upper side of the busbar (4) by means of its supporting leg (6) and the clamping leg (7), wherein the annularly bent locking arm (24) is connected to the fixing section (23), and the locking arm extends from the fixing section (23) fastened to the busbar (4) through the supporting leg (6) and the clamping leg (7) through the wire insertion opening (9), and wherein a locking protrusion forming the locking contour (25) is bent from the locking arm (24) toward the clamping leg (7).

6. A spring force clamping connection (3) according to any one of claims 1 to 3, It is characterized in that The elastically springable release section (26) is integrally formed with the locking arm (24), wherein the locking contour (25) protrudes from a surface formed by the locking arm (24) along its longitudinal extension, and the release section (26) forms a support surface for the free end of the inserted electrical conductor to be clamped in the conductor insertion direction (L) below the stop formed by the locking contour (25).

7. A spring force clamping connection (3) according to any one of claims 1 to 3, It is characterized in that The busbar (4) has a conductor insertion opening (9), and the clamping spring (5) is inserted into the conductor insertion opening (9) from the upper side of the busbar (4) by means of its supporting legs (6) and clamping legs (7) at a first edge region (10) of the conductor insertion opening (9), and is sprung open by means of its clamping legs (7) toward an opposite second edge region (11, 12) of the conductor insertion opening (9), so as to form a clamping location for clamping an electrical conductor by means of the second edge region (11, 12) and the clamping edges (15) of the clamping legs (7), wherein the fixing section (23) is fastened to the busbar (4) forming the second edge region (11, 12). The locking arm (24) is located at the side of the conductor (4), and the locking arm (24) extends from a fixing section (23) fastened to the busbar (4) in the conductor insertion direction (L) at a distance from the plane formed by the conductor insertion opening (9) below the conductor insertion opening (9) towards the clamping spring (7), so as to form a stop for the clamping leg (7) deflected toward the support leg (6) in the open holding position by means of its locking contour (25), and the release section (26) is connected to the locking arm (24), which forms a support surface for the free end of the inserted electrical conductor to be clamped in the conductor insertion direction (L) below the stop formed by the locking contour (25).

8. A spring force clamping connection (3) according to any one of claims 1 to 3, It is characterized in that The busbar (4) has a wire insertion opening (9) and the clamping spring (5) extends into the wire insertion opening (9) by means of the clamping leg (7) and the supporting leg (6), wherein the locking arm (24) is connected to the fixing section (23), the free end of the locking arm extending toward the clamping spring (7) and forming a stop for the clamping leg (7) which is deflected toward the supporting leg (6) in the open holding position.

9. The spring force clamping connection (3) according to claim 8, It is characterized in that The free end section of the locking arm (24) forms the locking contour (25) and the release section (26).

10. A spring force clamping connection (3) according to any one of the preceding claims, It is characterized in that The conductor insertion opening (9) has a flange (34) extending from a plane formed by the conductor insertion opening (9) away from the busbar (4) in a conductor insertion direction (L), the flange partially or completely delimiting the conductor insertion opening (9) and having two flange end walls (35, 12) spaced apart from each other and opposite to each other, wherein the supporting leg (6) abuts against the first flange end wall (35), and the clamping leg (7) and the second flange end wall (12) form a clamping portion for clamping an electrical conductor, the second flange end wall being opposite to the first flange end wall (35).

11. The spring force clamping connection (3) according to any one of claims 4 to 10, It is characterized in that The open holding element (22) is fastened to the upper side of the busbar (4) and is guided through the conductor insertion opening (9).

12. A spring force clamping connection (3) according to any one of the preceding claims, It is characterized in that The fastening section (23) is fastened to the busbar (4) by clamping, by form fit or by material fit.

13. A spring force clamping connection (3) according to any one of the preceding claims, It is characterized in that The supporting leg (6) bears against the busbar (4) and supports the clamping spring (7) on the busbar (4).

14. A terminal block (1) comprising: - a housing (2) of insulating material, and - a spring force clamping connection (3) according to any one of the preceding claims, The insulating material housing (2) has a wire introduction opening (19) for guiding an electrical wire to a clamping position formed between a contact edge (14) of the busbar (4) and the clamping edge (15) of the clamping leg (7) to clamp the electrical wire. It is characterized in that The wire insertion opening (19) leads to the clamping position and is oriented so that an electrical wire introduced into the wire insertion opening (19) contacts the release section (26) and the locking arm (24) is displaced by displacing the release section (26) to unlock the clamping leg (7) locked at the locking contour (25) in the open holding position.

15. The connecting terminal (1) according to claim 14, It is characterized in that The insulating material housing (2) has an operating opening (17) which is open toward the clamping leg (7) so that the clamping leg (7) can be displaced toward the supporting leg (6) into the open holding position against the spring force of the clamping spring (5) by means of an operating tool introduced into the operating opening (17) or an operating element movably inserted into the operating opening (17).

Images