Conductor connection terminal

Abstract

To provide a conductor connection terminal to be improved.SOLUTION: In a conductor connection terminal 1, a bus bar member 2 includes a first conductive reception part 8a and a second conductive reception part 8b, in each region opposite to an opposite side, respectively. The first conductive reception part 8a and the second conductive reception part 8b are connected via a connection part 8c each other, and a first conductor can be supplied to a first conductor insertion direction L1 via the first conductive reception part 8a, and a second conductor can be supplied to a second conductor insertion direction L2 via the second conductive reception part 8b at a clamp position, respectively. In the conductor connection terminal 1, the bus bar member 2 includes: a bottom part having the clamp position, an upper face 9, and two opposite side faces 13 connecting the bottom part and the upper face 9 each other, and the first conductive reception part 8a and the second conductive reception part 8b are structured so as to be closed to a peripheral direction. The connection part 8c includes at least one concave part in the bottom part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a conductor connection terminal comprising an insulating material housing, a busbar member, and a first clamping leg and a second clamping leg, the first clamping leg and the second clamping leg being arranged on a clamping spring or on different clamping springs, the first clamping leg and the busbar member forming a first clamping position for a first clamped conductor, the second clamping leg and the busbar member forming a second clamping position for a second clamped conductor, the busbar members being The bus bar member has a first conductor receiving portion and a second conductor receiving portion in opposing regions on opposite sides, the first conductor receiving portion and the second conductor receiving portion being connected to each other via a connection portion, the first conductor being capable of being supplied to each clamping position via the first conductor receiving portion in a first conductor insertion direction, and the second conductor being capable of being supplied to each clamping position via the second conductor receiving portion in a second conductor insertion direction, and the bus bar member has a bottom having clamping positions, a top surface, and two opposing side surfaces connecting the bottom and top surface. [Background technology]

[0002] German Utility Model No. 202016105702 discloses a conductor connection terminal with a contact insert, which has a holding frame, where the holding frame is formed from a plurality of side walls aligned next to each other, where one of the side walls is positively connected to another side wall. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] German Utility Model No. 202016105702 Summary of the Invention [Problem to be solved by the invention]

[0004] Based on this, it is an object of the present invention to provide an improved conductor connection terminal. [Means for solving the problem]

[0005] This problem is solved by a conductor connection terminal having the features of claim 1. Advantageous embodiments are set forth in the dependent claims. In this type of conductor connection terminal, it is proposed that the first conductor receiving portion and the second conductor receiving portion are configured to be closed in the circumferential direction, and the connection portion has at least one recess in its bottom.

[0006] In this way, a conductor connection terminal is provided that ensures the current flow and at the same time has the necessary stability. The corresponding recesses allow for material savings and at the same time provide space for additional components. Here, the busbar members can be constructed in one piece.

[0007] Furthermore, the recess can provide the busbar with a locking edge, which can be used, for example, in such a way that one or more locking connections are arranged on the insulating housing which surround the busbar and lock onto the locking edge of the recess.

[0008] The busbar member may have a mounting element for mounting the clamp spring to the busbar member, in particular the mounting element is configured as a mounting tab. Here, it is also conceivable that the clamp spring can be held in a free-standing, floating manner on the mounting tab, which has the advantage that the clamp spring can be attached to the busbar without additional mounting means.

[0009] The recess of the connection portion may be located approximately centrally between the first conductor receiving portion and the second conductor receiving portion. The recess may extend laterally. In particular, the recess may be configured with a U-shape in cross section perpendicular to the first conductor insertion direction and / or the second conductor insertion direction. A U-shaped recess can further save material and provide a higher locking edge.

[0010] The upper surface may be configured as a conductor-rising inclined surface. In particular, the upper surface may be configured in a V-shaped cross section in the first conductor insertion direction and / or the second conductor insertion direction. By configuring the upper surface as a conductor-rising inclined surface, the existing contour can be utilized to facilitate insertion of the conductor. Thus, the upper surface can be configured to rise in a direction opposite to the first and / or second conductor insertion direction. This results in a funnel-shaped first and / or second conductor receiving portion that expands in a direction opposite to the conductor insertion direction to guide the first and / or second conductor. The conductor to be clamped is inserted into the respective conductor receiving portion with a large cross-section that tapers toward the respective clamping position, thereby ensuring secure clamping of the conductor at the respective clamping position.

[0011] The clamp spring has an abutment leg, a clamp leg, and a spring arch disposed between the abutment leg and the clamp leg, the clamp leg extending toward the busbar member and having a spring clamp edge for clamping the first conductor and / or the second conductor.

[0012] The conductor connection terminal may have a conductor stopper for positioning the clamped first conductor and / or the clamped second conductor, the conductor stopper being located in the recessed area, or the conductor stopper may be located on the insulating housing.

[0013] The conductor stop serves to correctly position the conductor to be clamped. The conductor is then guided into the conductor connection terminal until it is blocked by the conductor stop. The conductor can then be clamped and fixed in this position. It is contemplated that conductor stops may be provided for the first and second conductors to be clamped. In this case, the opposing sides of the conductor stop are each assigned to one of the conductors to be clamped. However, it is also conceivable to assign a separate conductor stop to each conductor to be clamped.

[0014] To provide the conductor stop in a structurally simple manner, the conductor stop can be arranged on the insulating housing and engaged in a recess in the bus bar member, but it is also possible to arrange the conductor stop on the bus bar member itself, for example, so that it protrudes into the recess in the bus bar member.

[0015] The insulating material housing can be constructed transparent at least in the area of ​​the conductor stop, so that the conductor stop is visible through the insulating material housing. By configuring the insulating housing transparent, the insertion depth of the conductors to be clamped can be confirmed, allowing the user to actively check through the housing whether each conductor is positioned at the conductor stop. It is also possible to provide markings on the busbar member and / or the insulating housing, which indicate the minimum insertion depth of the first conductor and / or the second conductor. The minimum insertion depth is the depth at which secure clamping of the conductors to the busbar member is guaranteed. Such markings can be implemented, for example, as colored markings or indentations.

[0016] An inspection opening may be disposed in the insulator housing, the inspection opening being oriented transversely to the first clamped conductor and / or the second clamped conductor and extending from a surface of the insulator housing through the insulator housing toward the busbar member, allowing the busbar member to be contacted with an external measuring device.

[0017] The conductor connection terminal may have an operating lever, the operating lever being arranged to displace the first clamp leg and / or the second clamp leg, and in particular, the conductor connection terminal may have a support surface for the operating lever.

[0018] This allows the clamping positions to be easily opened and closed without the use of further auxiliary means. It is conceivable that the conductor connection terminal has at least two operating levers, each of which interacts with one of the clamp legs and is thus configured to open and close the clamping positions. The clamping positions can then be opened and closed independently of one another. In this case, it is preferable that the conductor cannot be removed from the clamping positions without operating the levers.

[0019] The support of the operating lever allows for a closed force transmission path through the conductor connection terminal, thereby reducing temporary load peaks. The support can be realized, for example, as a support tab, which is arranged in the first conductor insertion direction or the second conductor insertion direction, or one support tab is arranged upstream of the conductor receiving portion in each of the two conductor insertion directions. The support can be arranged, for example, on the insulating housing and / or the clamp spring and / or the busbar. The presence of multiple supports improves the distribution of forces caused by the operating lever.

[0020] The recess may be closed by an insulating material housing, which may for example protrude into the recess or may be guided through the recess from the outside, directly or indirectly nearby.

[0021] The indefinite article "ein" is to be understood as an indefinite article, not as a numeral. The conductor connection terminal according to the present invention may also have a plurality of adjacently arranged busbar members, where, for example, two, three, four, or five busbar members are arranged adjacently in the insulating housing, and each busbar member has two clamping springs for clamping two conductors.

[0022] The invention will now be described in more detail with reference to embodiments, by way of example only, and using the accompanying drawings, in which: [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 2 is a perspective view of one embodiment of a conductor connection terminal. [Figure 2a] 2 is a cutaway side view of the conductor connection terminal according to FIG. 1 without an electrical conductor inserted therein; [Figure 2b] 2b is an enlarged partial view of the conductor connection terminal according to FIG. 2a; [Figure 3a] 2b , a cutaway side view of the conductor connection terminal according to FIGS. 1-2b with an electrical conductor inserted therein; FIG. [Figure 3b] 3b is an enlarged partial view of the conductor connection terminal according to FIG. 3a; [Figure 4] 1 is a cutaway side view of a conductor connection terminal with an insulating material housing. DETAILED DESCRIPTION OF THE INVENTION

[0024] FIG. 1 shows a perspective view of a conductor connection terminal 1 according to a first embodiment. The conductor connection terminal 1 includes a busbar member 2, with a first clamp spring 3a and a second clamp spring 3b arranged at opposite ends of the busbar member 2. The clamp springs 3a and 3b have abutment legs 4a and 4b connected to spring arches 5a and 5b, respectively, and extending to clamp legs 6a and 6b. The clamp legs 6a and 6b extend to the busbar member 2, and the clamp legs 6a and 6b have spring clamp edges 7a and 7b, which, together with the busbar member 2, form a first clamping position for a first clamped conductor and a second clamping position for a second clamped conductor.

[0025] It can be seen that a first conductor receiving portion 8a for a first conductor to be clamped and a second conductor receiving portion 8b for a second conductor to be clamped are respectively arranged at opposing ends of the busbar member 2. It is clear that the conductor receiving portions 8a, 8b are circumferentially closed. Here, the conductor receiving portions 8a, 8b have upper portions 9a, 9b of a top surface 9 associated with the abutment legs 4a, 4b and bottom portions 12 associated with the spring clamping edges 7a, 7b. The respective upper portions 9a, 9b and bottom portions 12 are connected to each other via two side surfaces 13 to form a continuous circumferentially closed conductor receiving portion 8a, 8b. Here, the conductor receiving portions 8a, 8b are connected to each other via a connecting portion 8c, and the conductor receiving portions 8a, 8b and the connecting portion 8c share a common top surface 9.

[0026] In the first conductor insertion direction L1 or the second conductor insertion direction L2 when viewed from the front of the conductor receiving portions 8a, 8b, the bus bar member 2 has tab-shaped conductor abutment portions 2a, 2b, which are preferably integrally molded, and the conductor abutment portions 2a, 2b are preferably abutted by spring clamp edge portions 7a, 7b in a closed state with no conductor inserted.

[0027] It can further be seen that two mounting tabs 10a, 10b are arranged on the upper surface 9 of the busbar member 2, the mounting tabs 10a, 10b being respectively arranged at opposite ends on opposite sides of the upper surface 9. One of the clamp springs 3a, 3b is held by the respective mounting tab 10a, 10b in a free-standing manner, i.e. in a floating state without any additional mounting means.

[0028] However, it is also conceivable that the clamping springs 3 a , 3 b are configured as a single clamping spring with two clamping legs 7 a , 7 b , which single clamping spring extends on the upper surface 9 of the busbar member 2 .

[0029] FIG. 2a is a cutaway side view of the conductor connection terminal 1 according to FIG. 1 without an inserted conductor. It can be seen that the busbar member 2 has busbar clamping edges 11a, 11b in the region of the spring clamping edges 7a, 7b, respectively. The busbar clamping edges 11a, 11b can advantageously be provided in the region of the conductor abutments 2a, 2b. The busbar clamping edges 11a, 11b have a radius of 0.2 mm or less, in particular a radius of 0.1 mm or less. The very small radius of the busbar clamping edges 11a, 11b provides the conductor connection terminal 1 with a high conductor retention force. The small radius of the busbar clamping edges 11a, 11b allows the busbar clamping edges 11a, 11b to be sharp enough to cut into the conductor to be clamped, which in turn allows the busbar clamping edges 11a, 11b to bite into the conductor to be clamped and thereby achieve a corresponding conductor retention force.

[0030] However, it is also conceivable that the busbar clamping edges 11a, 11b have an even smaller radius, which would further improve the cutting effect on the conductor. It can be seen that the bottom part 12 of the busbar member 2 can form a support for the conductor to be clamped. Here, the bottom part 12 can be provided with tab-like conductor abutments 2a, 2b. The bottom part 12 and the top part 9 are connected to each other by two opposing side surfaces 13. It is clear that the bottom part 12 and the side surface 13 have a recess 14 in the area of ​​the connection part 8c. Here, the recess 14 is located approximately in the center between the first conductor receiving part 8a and the second conductor receiving part 8b. Approximately in the center means that the recess 14 is located so that the conductor receiving parts 8a, 8b have the same length. In this case, a maximum error of 15% can occur.

[0031] Here, the recess 14 extends over more than half of the connection portion 8c. Here, "half" refers to the area occupied by the recess 14 when viewed from the side. The busbar member 2 has a U-shaped cross section due to the recess 14 extending over the bottom portion 12 and both side surfaces 13. This U-shaped configuration ensures good current flow and a stable conductor connection terminal 1.

[0032] It is further evident that the upper surface 9 is configured as a conductor-rising inclined surface, i.e., the upper surface 9 is configured V-shaped, where the cross section of the conductor receiving portions 8a, 8b tapers towards the centre of the conductor connection terminal 1 up to the region of the connection portion 8c. In this way, the corresponding conductors can be inserted into the larger cross section of the conductor receiving portions 8a, 8b and are guided through the tapered cross section towards the respective clamping position.

[0033] 2b is an enlarged partial view of the conductor connection terminal 1 according to FIG. 2a. Here, the area around the busbar clamping edge 11a is shown enlarged. It is clear that the busbar clamping edge 11a is arranged on a busbar clamping part 18. In this case, the busbar clamping part 18 is cut out or punched out from the busbar member 2.

[0034] Furthermore, it can be seen that the busbar member 2 has a recess 15 and a concave portion 16, the recess 15 being arranged behind the busbar clamping edge 11a in relation to the first conductor insertion direction L1 (in other words, when viewed from the first conductor insertion direction L1), and the concave portion 16 being arranged in front of the busbar clamping edge 11a in relation to the first conductor insertion direction L1. The concave portion 16 is configured to accommodate the spring clamping edge 7a when no conductor is inserted into the conductor connection terminal 1. In this way, the clamp spring 3a can be further stabilized, and the conductor connection terminal 1 can be transported more safely.

[0035] The recess 15 allows the busbar clamping edge 11a to be made high enough relative to the busbar so that it can bite into the conductor it clamps. Note that the height is limited because otherwise the conductor being clamped may be damaged.

[0036] What is also clear is that the distance ΔA2 from a plane E, which is parallel to the first conductor insertion direction L1 and extends through the busbar clamping edge 11a, to the busbar 2 behind the busbar clamping edge 11a is greater than the distance ΔA1 in front of the busbar clamping edge 11a.

[0037] Figure 3a shows a cutaway side view of the conductor connection terminal 1 according to Figures 1 to 2b with an inserted conductor 17. Figure 3b shows an enlarged partial view of the conductor connection terminal 1 according to Figure 3a, where the area around the busbar clamping edge 11a is shown enlarged.

[0038] It is clear that the first conductor 17 is clamped and held at the bottom 12 of the busbar member 2 between the spring clamping edge 7a and the busbar clamping edge 11a. Here, the busbar clamping edge 11a is configured as a hook portion (in other words, a locking portion), and when the first conductor 17 is pulled, the busbar clamping edge 11a cuts into the first conductor 17 in the direction opposite to the first conductor insertion direction L1, and thus bites into the first conductor 17. In this way, a correspondingly high holding force can be exerted on the first conductor 17, and the first conductor 17 can be fixedly held in the clamped position of the conductor connection terminal 1.

[0039] Similarly, a second conductor can be clamped to the end opposite the clamped first conductor 17 . Here, the busbar clamping edge 11a can be configured with a higher stiffness than the spring clamping edge 7a. The higher stiffness of the busbar clamping edge 11a compared to the clamp spring 7a ensures that the busbar clamping edge 11a cuts into the clamped conductor.

[0040] 4 shows a cutaway side view of a conductor connection terminal 1 with an insulating housing 19, in which a busbar member 2 is arranged. Two clamping springs 3a, 3b are arranged on opposite ends of the busbar member 2. The clamping springs 3a, 3b have abutment legs 4a, 4b that connect to spring arches 5a, 5b and extend to clamping legs 6a, 6b. The clamping legs 6a, 6b have spring clamping edges 7a, 7b, respectively, which, together with the busbar member 2, form a first clamping position for a first clamped conductor and a second clamping position for a second clamped conductor.

[0041] The conductor connection terminal 1 has two operating levers 20a, 20b, which interact with clamping springs 3a, 3b, respectively, and are thus arranged to displace the clamping legs 6a, 6b. The clamping position of the conductor can be opened and / or closed by the operating levers.

[0042] It is further evident that the conductor connection terminal 1 has a conductor stop 21, which is arranged in the insulating housing 19. The conductor stop serves to position the first and second conductors to be clamped, and the conductor stop 21 is arranged in the region of the recess 14 of the busbar member 2. Here, the conductor stop 21 is guided through the recess 14 in the bottom 12 of the busbar member 14. In an advantageous embodiment, the insulating housing 19 is transparent, at least in the region of the recess 14. The transparent insulating housing allows the insertion depth of the conductors to be clamped to be confirmed, and the user can actively see through the insulating housing 19 whether the respective conductor is positioned at the conductor stop 21.

[0043] An inspection opening 22 is arranged in the conductor connection terminal 1, and extends from the surface of the insulating material housing 19 through the insulating material housing 19 towards the busbar 2. In this case, the inspection opening 22 extends transversely, in particular perpendicularly, to the first conductor insertion direction L1. Via the inspection opening 22, the busbar 2 can be contacted, for example, with an external measuring device. [Explanation of symbols]

[0044] 1 Conductor connection terminal 2 Bus bar member 2a, 2b Conductor contact part 3a, 3b Clamp spring 4a, 4b Contact legs 5a, 5b Spring arch 6a, 6b Clamp legs 7a, 7b Spring clamp edge 8a First conductor receiving portion 8b Second conductor receiving portion 8c Connection 9 Top side 9a, 9b upper part 10a, 10b Mounting tabs 11a, 11b Busbar clamp edge 12 Bottom 13 Side 14 Recess 15 Depression 16 Recess 17 First conductor 18 Busbar clamp 19 Insulating housing 20a, 20b Operating lever 21 Conductor stopper 22 Test opening ΔA1, ΔA2 distance E plane L1 First conductor insertion direction L2 Second conductor insertion direction

Claims

1. A conductor connection terminal (1) comprising an insulating material housing (19), a busbar member (2), and a first clamping leg (6a) and a second clamping leg (6b), the first clamping leg (6a) and the second clamping leg (6b) being arranged on one clamping spring (3a, 3b) or on different clamping springs (3a, 3b), the first clamping leg (6a) and the busbar member (2) forming a first clamping position for a first conductor (17) to be clamped, the second clamping leg (6b) and the busbar member (2) forming a second clamping position for a second conductor to be clamped, the busbar member (2) having a first conductor receiving portion (8a) and a second conductor receiving portion (8b) in opposing regions on opposite sides thereof, the first conductor receiving portion (8a) the first conductor (17) can be supplied to its respective clamping positions via the first conductor receiving portion (8a) in a first conductor insertion direction (L1) and the second conductor can be supplied to its respective clamping positions via the second conductor receiving portion (8b) in a second conductor insertion direction (L2); the bus bar member (2) has a bottom (12) having the first and second clamping positions, a top surface (9), and two opposing side surfaces (13) connecting the bottom (12) to the top surface (9); the first conductor receiving portion (8a) and the second conductor receiving portion (8b) are configured to be closed in the circumferential direction, and the connection portion (8c) has at least one recess (14) in the form of a cutout in the bottom (12); The recess (14) provides a locking edge for the busbar member, and the insulating material housing (19) protrudes into the recess (14) and closes the opening in the bottom (12) provided by the recess (14).

2. 2. A conductor connection terminal (1) according to claim 1, characterized in that the busbar member (2) comprises mounting elements (10a, 10b) for mounting the clamping springs (3a, 3b) on the busbar member (2).

3. A conductor connection terminal (1) according to claim 2, characterized in that the mounting elements (10a, 10b) are configured as mounting tabs (10a, 10b).

4. The conductor connection terminal (1) according to any one of claims 1 to 3, characterized in that the recess (14) of the connection portion (8c) is arranged substantially centrally between the first conductor receiving portion (8a) and the second conductor receiving portion (8b).

5. A conductor connection terminal (1) according to any one of claims 1 to 4, characterized in that the recess (14) extends to the two side surfaces (13).

6. The conductor connection terminal (1) according to claim 5, characterized in that the bus bar member (2) is configured to be U-shaped in a cross section perpendicular to the first conductor insertion direction (L1) and / or the second conductor insertion direction (L2).

7. A conductor connection terminal (1) according to any one of claims 1 to 6, characterized in that the upper surface (9) is configured as a V-shaped conductor rising slope.

8. The conductor connection terminal (1) according to claim 6, characterized in that the upper surface (9) is configured in a V-shape in cross section in the first conductor insertion direction (L1) and / or the second conductor insertion direction (L2).

9. 9. The conductor connection terminal (1) according to claim 1, wherein the clamping spring (3a, 3b) has abutment legs (4a, 4b), clamping legs (6a, 6b) and spring arches (5a, 5b) arranged between the abutment legs (4a, 4b) and the clamping legs (6a, 6b), the clamping legs (6a, 6b) extending towards the busbar member (2) and having spring clamping edges (7a, 7b) for clamping the first conductor (17) and / or the second conductor.

10. 10. The conductor connection terminal (1) according to claim 1, wherein a conductor stop (21) for positioning the clamped first conductor (17) and / or the clamped second conductor is arranged on the conductor connection terminal (1), the conductor stop (21) being arranged in the region of the recess (14).

11. A conductor connection terminal (1) according to claim 10, characterized in that the conductor stop (21) is arranged on the insulating material housing (19).

12. 12. The conductor connection terminal (1) according to claim 10 or 11, wherein the insulating material housing (19) is transparent at least in the area of ​​the conductor stopper (21), and the conductor stopper (21) is visible through the insulating material housing (19).

13. 13. The conductor connection terminal (1) according to claim 1, wherein an inspection opening (22) is arranged in the insulating material housing (19), the inspection opening (22) extending perpendicular to the first conductor (17) to be clamped and / or the second conductor to be clamped and extending from the insulating material housing (19) towards the busbar member (2).

14. 14. The conductor connection terminal (1) according to any one of claims 1 to 13, characterized in that the conductor connection terminal (1) has operating levers (20a, 20b), which are arranged to displace the first clamping leg (6a) and / or the second clamping leg (6b).

15. The conductor connection terminal (1) according to claim 14, characterized in that the busbar member (2) has a support surface for the operating levers (20a, 20b).

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