Connection terminal and spring force clamping connection

Abstract

The invention relates to a connection terminal having an insulating material housing and a spring-loaded clamping connection, the spring-loaded clamping connection having a busbar, a clamping spring and an operating element which engages with an operating leg and is designed to move the operating leg when the operating element is moved. The operating leg is mechanically coupled to the operating element for force transmission of a force acting on the operating element, the operating element having: an operating end which is accessible from outside the insulating material housing and which can be loaded with an operating force for moving the operating element; the inner end part is arranged in the insulating material shell; and an operating section arranged between the operating end and the inner end, the operating section being guided alongside the operating leg, the operating section being at least partially accommodated in a space on the side of the operating leg facing away from the spring bow at least in the operating state.

Description

Technical Field

[0001] The present invention relates to a terminal, which has an insulating material housing and a spring force clamping connection member, wherein the spring force clamping connection member has:

[0002] - a bus bar,

[0003] - a clamping spring, which has a supporting leg, a clamping leg with a clamping edge, a spring bow connecting the supporting leg and the clamping leg, and an operating leg extending from the clamping leg towards the supporting leg and passing through at the supporting leg, wherein the clamping edge is used for clamping an electrical wire at the clamping site, and

[0004] - an operating element, which engages with the operating leg and is configured to move the operating leg when the operating element moves.

[0005] The present invention also relates to a spring force clamping connection member, which has:

[0006] - a bus bar, which unfolds a bus bar plane,

[0007] - a clamping spring, which has a supporting leg, a clamping leg with a clamping edge, and a spring bow connecting the supporting leg and the clamping leg, wherein the clamping edge is used for clamping an electrical wire at the clamping site, and

[0008] - an operating element, which engages with the clamping spring and is configured to move the clamping leg when the operating element moves. Background Art

[0009] EP 2 843 764B1 discloses a spring force terminal for connecting stranded wires, which has a housing and a bus bar arranged therein and a clamping spring serving as a compression spring. The clamping spring has a clamping leg, which can pivot around a pivot axis in a pivoting direction, and the clamping leg can be adjusted from its locked state locked at a holding mechanism to a clamping state by moving an electrical wire, in which clamping state the clamping leg unlocks from the holding mechanism and presses the electrical wire against the bus bar. A moving sleeve is provided, which serves as an introduction aid for the wire.

[0010] EP 3 714 511B1 discloses a spring force terminal for connecting electrical wires, which has a spring element and an operating element acting on a spring leg of the spring element. In addition, an adjusting element is provided, which can be adjusted from a first position to a second position to change the operating element from a starting position to a release position for moving the spring leg. The adjusting element is locked relative to a contact element in the second position and has a release section, which releases the locking of the adjusting element by the action of the inserted electrical wire. Summary of the Invention

[0011] The object of the present invention is to achieve an improved terminal and an improved spring force clamping connection, in which the clamping spring can be simply operated to open and close by means of an operating element.

[0012] The above object is achieved by means of a terminal having the features of the present invention and a spring force clamping connection having the features of the present invention. Advantageous embodiments are described herein.

[0013] It is proposed here that the operating leg is mechanically coupled to the operating element for force transmission of the force acting on the operating element, wherein the operating element has:

[0014] - an operating end which is accessible from outside the insulating material housing and can be loaded with an operating force for moving the operating element,

[0015] - an inner end provided within the insulating material housing,

[0016] - an operating section provided between the operating end and the inner end, wherein

[0017] - the operating section is guided past the operating leg, wherein the operating section is at least partially received in a space on the side of the operating leg facing away from the spring bow at least in the operating state.

[0018] The guiding of the operating section past the operating leg is not only understood as a lateral guiding, but also as a guiding through a receiving opening introduced in the plane of the operating section. Such a receiving opening can be a surrounding opening or only a partially surrounding recess.

[0019] The inner end can be configured as a free end which moves during operation. Thus, the free end can move in the force direction of the operating force, i.e., the operating direction, when the operating element is movably supported.

[0020] However, the inner end can also be configured as a supporting end and form a support for the operating element. Thus, the pivotable operating element can be pivotally supported at the supporting end on the insulating material housing and / or the bus bar.

[0021] The operating leg can be configured as a flat spring strip section. However, it is also conceivable that the operating section has a different cross-sectional profile, such as a T-shaped profile.

[0022] The operating element can be supported on the bus bar by means of the supporting end. The operating element can be pivotable by means of the operating end opposite to the supporting end, wherein the operating leg is located between the supporting end and the operating end of the operating element.

[0023] Thus, the operating leg is spaced apart from the busbar plane, preferably substantially parallel. This results in a lever arm for an operating element supported at the busbar plane, which operating element subsequently moves the operating leg with good force conversion in the form of an operating rod. The operating end is located on the side opposite the inner support end for this purpose.

[0024] Advantageously, the contact busbar piece extends from the busbar plane towards the clamping spring. The support leg can be supported at the contact busbar piece. The contact busbar piece and the clamping end of the clamping leg together form a clamping site for clamping an electrical conductor.

[0025] Thus, a self-bearing spring force clamping connection is provided.

[0026] The contact busbar piece can have a first end wall at which the support leg is supported. There can also be a second end wall which has a clamping section for clamping the electrical conductor between the clamping end of the clamping leg and the clamping section. The two end walls can project from the busbar plane and be spaced apart from each other and each be connected to the busbar plane.

[0027] Thus, a self-bearing construction is achieved, in which the force of the clamping spring acts between the two end walls. The space between the two end walls can be used to accommodate a holding element which holds the clamping spring in the holding open position. The holding element is movably formed by the inserted electrical conductor in order to unlock the clamping spring.

[0028] The contact busbar piece can have side walls which connect the first end wall and the second end wall to each other and also project from the busbar plane.

[0029] Thus, the contact busbar piece circumscribes and delimits the following space, which space is also delimited by the busbar plane and can be used for the orientation of the holding element for opening.

[0030] Furthermore, a further stable structure of the contact busbar piece and a further improved current guidance in the contact busbar piece can be achieved thereby.

[0031] The support leg can be guided through the operating leg or guided laterally past the operating leg.

[0032] The spring-elastic holding element can be supported on the busbar plane by means of a support leg and has a holding section which has a holding profile for holding the clamping leg in the open position by forming a stop.

[0033] In such a spring clamping connector, the contact busbar piece can extend from the busbar plane toward the clamping spring. The contact busbar piece can have a first end wall and a second end wall. The support leg can be supported at the first end wall. The second end wall has a clamping section, which is used to clamp the electrical conductor between the clamping end of the clamping leg and the clamping section. The two end walls can extend from the busbar plane and be spaced apart from each other and connected to the busbar respectively. A spring-elastic retaining element can be arranged between the two end walls. The retaining element can be supported on the busbar plane by means of the support leg and has a retaining section, which has a retaining profile, and the retaining profile is used to keep the clamping leg open in the open position by forming a stop.

[0034] Therefore, the clamping spring can be supported by the contact busbar piece. A holding element for holding the clamping spring open, for example in the factory state, and automatically releasing the clamping spring by an inserted electrical conductor to be clamped can be supported in the gap of the contact busbar piece on the busbar.

[0035] Protruding from the plane means that the end wall is oriented at an angle, preferably transversely, away from the busbar plane. Transverse is not to be understood here as a strictly vertical angle, but as a right angle of 90° with a tolerance within an angle range that is still acceptable for the function, for example a maximum of ±30°. Thus, an arrangement transverse to the busbar plane can include a preferred angle range of 60° to 120°.

[0036] The operating element can be, for example, a movably mounted operating lever or a pivotably mounted operating lever.

[0037] The spring-elastic retaining element can be designed as an annular spring having a spring bow which connects the supporting leg to the retaining section.

[0038] The contact busbar piece can have side walls which connect the first end wall and the second end wall to one another and which at the same time protrude from the busbar plane.

[0039] The connecting terminal has an insulating material housing and the aforementioned spring force clamping connection in the insulating material housing. The insulating material housing has a wire insertion opening leading to a clamping location and an operating opening formed for receiving a component in a groove.

[0040] In the sense of the present invention, the indefinite article "a" is not to be understood as a quantifier. Thus, if, for example, a component is mentioned, this is to be understood as "at least one component". If an angular specification is made in degrees, the angular specification relates to a circle size of 360 degrees (360°). BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention is described below by way of example based on an embodiment. The accompanying drawings show:

[0042] Figure 1 Side sectional view of a first embodiment of a terminal with a pivotable operating element in the closed position;

[0043] Figure 2 Side sectional view of a first embodiment of a terminal with a pivotable operating element in the open position;

[0044] Figure 3 Shows Figure 1 and 2 Top view of the spring - force clamping connection in;

[0045] Figure 4 Side sectional view of a second embodiment of a terminal with a movable operating element in the closed position;

[0046] Figure 5 Side sectional view of a second embodiment of a terminal with a movable operating element in the open position. Detailed description of the specific embodiment

[0047] Figure 1 Side sectional view of a first embodiment of a terminal 1 with a pivotable operating element 2 in the closed position. The terminal 1 has an insulating - material housing 3 and a spring - force clamping connection, and the spring - force clamping connection has a bus bar 4 and a clamping spring 5.

[0048] In the example shown, the bus bar 4 unfolds a bus - bar plane 6, and contact bus - bar elements project from the bus - bar plane. The contact bus - bar elements have a first end wall 7 extending from the bus - bar plane 6 to the clamping spring 5 and a second end wall 8 spaced from the first end wall and extending substantially parallel to the first end wall 7. The contact bus - bar elements may also have side walls 9 that connect the first and second end walls 7, 8 to each other and also project from the bus - bar plane 6. Thereby, a U - shaped surrounding receiving cavity is realized, which is bounded at the bottom by the bus - bar plane 6.

[0049] The clamping spring 5 is configured as a U - shaped bent leg spring, which has a support leg 10, a spring bow 11 connected to the support leg 10, and a clamping leg 12 connected to the spring bow 11. The spring bow 11 connects the support leg 10 to the clamping leg 12. An operating leg 13 projects from the clamping leg 12 towards the support leg 10. The operating leg 13 is guided past beside the support leg 10. For this purpose, the support leg 10 can be guided through the operating leg 13 or laterally guided past beside the operating leg 13.

[0050] The clamping spring 5 can be received in a free space that matches the curvature of the spring bow 11, between a curved wall section of the insulating - material housing 3 and a guide pin 14 of the insulating - material housing 3.

[0051] The insulating material housing 3 has a wire inlet opening 15 for introducing the electrical wire 16 into the clamping region, in order to clamp the electrical wire at the busbar 4 by means of the clamping spring 5.

[0052] The clamping end 17 of the clamping leg 12, which faces away from the second end wall 8 and has a clamping edge 17a at its free end, and the second end wall 8 together form a clamping region, in order to clamp the electrical wire 16 between the clamping edge of the clamping end 17 of the clamping leg 12 and the clamping section of the second end wall 8.

[0053] In the closed position shown, the clamping spring 5 rebounds by its spring force, such that the clamping end 17 lies at the second end wall 8 or directly beside the second end wall 8. If now the electrical wire 16 is arranged with its de-insulated end between the second end wall 8 and the clamping end 17, then the spring force is applied to the electrical wire 16 by the clamping spring 5, in order to conductively connect the electrical wire to the second end wall 8 of the busbar 4. The clamping end 17 is here placed with its clamping edge 17a at the de-insulated end of the electrical wire 16, in order to also mechanically hold the electrical wire and prevent it from being pulled out.

[0054] In order to open the clamping region, the clamping leg 12 must be moved towards the support leg 10 against the spring force of the clamping spring 5. For this purpose, an operating force is applied to the operating leg 13 by means of the operating element 2, and the clamping leg 12 is pulled towards the support leg 10 by this operating force.

[0055] The support leg 10 is supported at the first end wall 7. The operating leg 13 can be guided along the upper end side of the first end wall 7. The clamping spring 5 is supported in this way at the first end wall 7 and at the insulating material housing 1.

[0056] In the embodiment shown, the operating element 2 is configured as a pivotably supported operating lever, which has an operating arm forming an operating section 18 and an operating head 19 protruding from the insulating material housing 3. The operating head 19 is arranged at the operating end of the operating element 2, which can be accessed from outside the insulating material housing 3. The operating section 18 extends with its inner end into the support opening 21 of the busbar plane 6. In the extension of the operating element 2, the inner end is opposite to the operating end with the operating head 19. Thereby, the operating element 2 is pivotably supported at the busbar 4. The operating leg 13 has a receiving opening 20, and the operating arm is guided through the receiving opening with its operating section 18 located between the inner end and the operating end.

[0057] The user can move the operating head 19 in the moving direction V so as to pivot the operating element 2 received in the operating opening 22 of the insulating material housing 3 away from the clamping spring 5. By engaging the operating section 18 into the operating leg 13, the operating leg 13 is moved, as indicated by the dashed line at the end of the operating leg 13. Accordingly, the clamping end 17 is moved in the direction of the arrow into the open position.

[0058] On the busbar plane 6, the spring-elastic retaining element 23 is received between the first end wall 7 and the second end wall 8. The retaining element 23 has a support leg 24 which bears on the busbar plane 6 and which passes over into a retaining section 25. The retaining section 25 has a retaining profile 26 which projects towards the clamping spring 5 and which forms a stop for the clamping end 17 in the open position. This is indicated by the position of the clamping end 17 shown by the dashed line in the open position. Accordingly, the clamping spring 5 can be held open by means of the retaining element 23.

[0059] The retaining element 23 has a release section 27 which is arranged in the alignment line F of the conductor insertion opening 15. Accordingly, the insertion wire of the electrical wire 16 into the conductor insertion opening 15 and the de-insulated end guided along the second end wall 8 strike against the release section 27 so as to move the release section towards the support leg 24 of the retaining element 23. Accordingly, the stop formed by the retaining profile 26 for the clamping end 17 to be clamped is cancelled and the clamping leg 12 can move unhindered by the force of the clamping spring 5 away from the support leg 10 into the closed position.

[0060] The retaining element 13 itself can be formed from a spring-elastic material so as to spring into the shown locked position. Alternatively or additionally, a restoring force into the locked position can be caused by a restoring spring 28 which bears on the busbar plane 6 or on the support leg 24 and which bears on the underside of the retaining leg 25 on the opposite side. Accordingly, the restoring spring 28 acting as a compression spring forces the retaining profile in the direction of the clamping spring 5 so as to lock the clamping end 17 pivoted into the open position at the retaining element 23.

[0061] Figure 2 A side sectional view of the first embodiment of the terminal 1 in the open position is shown. Here, the operating element 2 pivots away from the clamping spring 5 in the pivoting direction V. Thereby, the operating leg 13 (towards the right in the viewing direction) is moved and the clamping leg 5 is pulled towards the support leg 10. The clamping end 17 of the clamping leg 12 thereby pivots into the open position behind the retaining profile 26 of the retaining element 23. Accordingly, the retaining profile 26 forms a stop for the clamping end 17 and holds the clamping spring 5 in the shown open position.

[0062] It can also be seen that the operating element 2 bends towards the operating end behind the operating section 18. For the pivoting angle of the operating element 2 about the support point L, the movement path for the operating head 19 becomes larger and larger as the radius increases. Since the operating element 2 is bent in the direction of the wire insertion opening 15 behind the operating leg 13 when viewed from the support point L, the movement path of the operating head 19 in the movement direction V can move along the wire insertion direction. In addition, the space of the insulating material housing 3 above the spring bow 11 next to the wire insertion opening 15 can be at least partially used to accommodate the operating end of the operating element 2 extending at the operating head 19. This enables a slightly more compact construction of the terminal 1 in the width direction (i.e., from left to right in Figure 1 and 2 ).

[0063] To clamp the electrical wire 16, the electrical wire is inserted into the wire insertion opening 15 and the de-insulated end of the electrical wire 16 is guided between the second end wall 8 and the clamping leg 12 together with its open clamping end 17. Then the end of the electrical wire 16 touches the release section 27 positioned in the alignment line F of the wire insertion opening 15 and extends in the direction of the support leg 24 via the release force. Therefore, the release section 27 together with the holding profile 26 connected thereto moves towards the busbar plane 6 and unlocks the clamping end 17. This becomes clear by comparing the spacing between the release section 27 and the support leg 24, which is smaller in the Figure 1 closed position than in the Figure 2 open position.

[0064] The movement of the operating element 2 is carried out by applying a pressure or a tensile force from the outside, for example by means of the user's hand, in a direction along the alignment line F transverse to the extension direction of the wire insertion opening 15 or parallel to the busbar plane 6 or transverse to the extension direction of the operating section 18, to the operating head 19. The force acting on the operating head 19 is substantially parallel to the extension direction of the operating leg 13 to be moved.

[0065] "Transverse" in the sense of the present invention is not understood as being exactly perpendicular or 90°, but as being less parallel, i.e., transverse (90° ± 45°, especially 90° ± 20°).

[0066] Figure 3 Shown Figure 1 and 2Top view of the spring-loaded clamping terminal of the terminal 1 in []. It can be seen that the support leg 10 is supported on one side of the second end wall and the operating section 18 is arranged on the other side. It becomes clear that the operating element 2 projects with its inner end into the support opening 21 in order to be supported there. It can also be seen that the busbar 4 has a busbar plane 6 from which contact busbar elements project, which are formed by a first and a second end wall 7, 8 spaced apart from each other and a side wall 9 connecting the two end walls 7, 8. The side wall 9 is laterally positioned at the edge of the long side of the busbar plane 9. The first and second end walls 7, 8 extend transversely to the longitudinal extension of the busbar plane 9. Thus, a U-shaped contact busbar element is realized.

[0067] Figure 4 Side cross-sectional view showing a second embodiment of the terminal 1 with the operating element 2 in the closed position. The operating element 2 is embodied as a movable operating presser 29.

[0068] The construction of the clamping spring 5 and the holding element 23 is similar to that of the first embodiment, such that reference is made to the Figure 1 and 2 description, which also applies to Figure 3 and Figure 4 .

[0069] The second embodiment differs in the construction and mode of action of the operating element 2. The operating element is movably supported as an operating presser 29 in the operating opening 22 of the insulating material housing 3. The operating presser 29 has a pressing head 30 which transitions into a conically tapering operating section 31. The pressing head 30 forms an operating end which can be accessed from outside the insulating material housing 3 and which can be loaded with an operating force to move the operating element 2. The conically tapering end of the operating presser 29 opposite the pressing head 30 forms the inner end, which is arranged within the insulating material housing 3. The operating section 31 of the operating presser 29 located between the inner end and the pressing head 30 guides through the receiving opening 20 of the operating leg 13. By the conically tapering profile of the operating section 31, the operating leg 13 is displaced transversely to the movement direction V of the operating presser 29 when the operating presser is supported at the edge defining the receiving opening 20 and remote from the first end wall 7. On the side of the operating presser 29 opposite the abutment at the edge, the operating presser 29 can be supported at the first end wall 7. Thus, the first end wall 7 forms a guide wall for the operating presser 29.

[0070] The movement of the operating presser 29 is effected by applying pressure from the outside, for example by means of an operating tool (e.g. a screwdriver), in the direction of the busbar plane 9 to the pressing head 30. The force acting on the pressing head 30 is substantially transverse to the extension direction of the operating leg 13 to be moved.

[0071] Figure 5 Side cross-sectional view of a second embodiment of the terminal 1 with a movable operating pressing member 29 showing the open position.

[0072] It can be seen that the operating pressing member 29 now moves in the moving direction V towards the busbar plane 9. Therefore, now compared with Figure 4 In comparison, the wider part of the tapered contour of the operating section 31 is located in the receiving opening 20 of the operating leg 13. Therefore, by applying a force to the operating leg 13, the clamping leg 12 is pulled towards the support leg 10 through the operating leg. Thus, the clamping part is opened and the clamping end 17 reaches behind the retaining profile 26 of the retaining element 23 that forms a stop. The clamping spring 5 is held in the open position by the retaining element 23, as has already been described for Figure 2 the first embodiment in

[0073] The busbar plane 6 and the insulating material housing may optionally have a receiving space 32 formed by openings and depressions or grooves so that, depending on the structural shape of the operating pressing member 29, it is possible to move the operating pressing member 29 also downward beyond the busbar plane 9. This is not necessary in the illustrated embodiment, but is generally conceivable.

[0074] List of reference numerals

[0075] 1 Terminal

[0076] 2 Operating element

[0077] 3 Insulating material housing

[0078] 4 Busbar

[0079] 5 Clamping spring

[0080] 6 Busbar plane

[0081] 7 First end wall

[0082] 8 Second end wall

[0083] 9 Side wall

[0084] 10 Support leg

[0085] 11 Spring bow

[0086] 12 Clamping leg

[0087] 13 Operating leg

[0088] 14 Guide pin

[0089] 15 Wire introduction opening

[0090] 16 Electric wire

[0091] 17 Clamping end

[0092] 17a Clamping edge

[0093] 18 Operating section

[0094] 19 Operating head

[0095] 20 Receiving opening

[0096] 21 Supporting opening

[0097] 22 Operating opening

[0098] 23 Holding element

[0099] 24 Support leg

[0100] 25 Holding section

[0101] 26 Holding profile

[0102] 27 Release section

[0103] 28 Return spring

[0104] 29 Operating press piece

[0105] 30 Pressing head

[0106] 31 Operating section

[0107] 32 Receiving cavity

[0108] F Alignment line

[0109] L Support point

[0110] V Pivoting direction

Claims

1. A terminal (1), the terminal having an insulating material housing (3) and a spring force clamping connection, wherein the spring force clamping connection has: - A busbar (4), - A clamping spring (5), the clamping spring having a support leg (10), a clamping leg (12) with a clamping edge (17a), a spring bow (11) connecting the support leg (10) and the clamping leg (12), and an operating leg (13) extending from the clamping leg (12) towards the support leg (10) and passing by the support leg (10), the clamping edge being for clamping an electrical conductor at a clamping site, and - An operating element (2), the operating element engaging with the operating leg (13) and configured to move the operating leg (13) when the operating element (2) is moved, characterized in that the operating element (2) has: - An operating end (19, 30), the operating end being accessible from outside the insulating material housing (3) and capable of being loaded with an operating force for moving the operating element (2), - An inner end provided within the insulating material housing (3), - An operating section (18, 31) provided between the operating end (19, 30) and the inner end, wherein - The operating section (18, 31) extends past the operating leg (13), wherein the operating section (18, 31) can be at least partially received in a space on the side of the operating leg (13) facing away from the spring bow (11) at least in the operating state.

2. The terminal (1) according to claim 1, characterized in that the operating element (2) is supported at the busbar (4) by a support end and is pivotable by means of an operating end (19) opposite to the support end, wherein the operating leg (13) is located between the support end and the operating end (19) of the operating element (2).

3. The terminal (1) according to claim 1 or 2, characterized in that A contact busbar member extends from the busbar plane (6) of the busbar (4) towards the clamping spring (5), wherein the support leg (10) is supported at the contact busbar member, and the contact busbar member and the clamping end (17) of the clamping leg (12) together form the clamping site for clamping the electrical conductor.

4. The terminal (1) according to claim 3, characterized in that the contact busbar member has a first end wall (7) and a second end wall (8), the support leg (10) is supported at the first end wall, the second end wall has a clamping section for clamping the electrical conductor between the clamping end (17) of the clamping leg (12) and the clamping section, wherein the two end walls (7, 8) project from the busbar plane (6) and are spaced apart from each other and are each connected to the busbar (4).

5. The terminal (1) according to claim 4, characterized in that The contact busbar part has side walls (9) which connect the first and second end walls (7, 8) to each other and also project from the busbar plane (6).

6. The terminal (1) according to any one of the preceding claims, characterized in that, the support leg (10) passes through the operating leg (13) or passes laterally beside the operating leg (13).

7. The terminal (1) according to any one of the preceding claims, characterized in that, the elastic holding element (23) is supported on the busbar plane (6) by means of a support leg (24) and has a holding section (25) which has a holding profile for holding the clamping leg (12) in the open position by forming a stop.

8. A spring force clamping connector having: - a busbar (4) which unfolds a busbar plane (6), - a clamping spring (5) having a support leg (10), a clamping leg (12) with a clamping edge (17a), and a spring bow (11) connecting the support leg (10) to the clamping leg (12), the clamping edge being for clamping an electrical conductor at a clamping site, and - an operating element (2) which engages with the clamping spring (5) and is configured to move the clamping leg (12) when the operating element (2) is moved, characterized in that, a contact busbar part extends from the busbar plane (6) towards the clamping spring (5), wherein the contact busbar part has a first end wall (7) and a second end wall (8), the support leg (10) is supported at the first end wall, the second end wall has a clamping section for clamping an electrical conductor between the clamping end of the clamping leg (12) and the clamping section, wherein the first and second end walls (7, 8) project from the busbar plane (6) and are spaced apart from each other and are each connected to the busbar (4), and an elastic holding element (23) is provided between the first and second end walls (7, 8) and is supported on the busbar plane (6) by means of a support leg (24) and has a holding section (25) which has a holding profile for holding the clamping leg (12) in the open position by forming a stop.

9. The spring force clamping connector according to claim 8, characterized in that, the operating element (2) is a movably supported operating press piece (29) or a pivotally supported operating lever.

10. The spring force clamping connector according to any one of claims 7 to 9, characterized in that, the holding element (23) is configured as an annular spring having a spring bow connecting the support leg (24) to the holding section (25).

11. The spring force clamping connector according to claim 7 or 8, characterized in that, The contact busbar part has side walls (9) which connect the first and second end walls (7, 8) to each other and also project from the busbar plane (6).

12. A terminal (1) having an insulating material housing (3) and having a spring force clamping connection according to any one of claims 8 to 11 in the insulating material housing (3), wherein the insulating material housing (3) has a wire introduction opening (15) leading to the clamping site and an operating opening (22) configured to receive the operating element (2).

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