Resilient force clamping connection and terminal block having a resilient force clamping connection

Abstract

The present invention is directed to a resilient force clamping connection (2) for a terminal block (1), in particular a connection terminal or connecting terminal, so as to electrically connect at least one conductor, said resilient force clamping element comprising a busbar (3), and a clamping spring (4) having a support limb (40), a resilient bend (41) that adjoins the support limb (40), and a clamping limb (42) that adjoins the resilient bend (41), wherein the clamping limb (42) comprises at a free end (420) that is remote from the resilient bend (41) a clamping section (421) so as to form a conductor clamping site (K) between the clamping section (421) and the busbar (3) so as to electrically connect a conductor (L) to the resilient force clamping connection (2). At least one actuating limb (43) extends from the clamping limb (42) between the resilient bend (41) and the free end (420) in a direction away from the support limb (40), wherein the actuating limb (43) comprises an actuating section (430) in order to cooperate with a release element (5) so as to open the conductor clamping site (K). The present invention is further directed to a terminal block (1) so as to electrically connect at least one conductor, said terminal block comprising an insulated housing (6) and at least one resilient force clamping connection (2) according to the present invention and being received at least in part by the insulated housing (6).

Claims

1. A terminal block (1) so as to electrically connect at least one conductor, said terminal block comprising an insulated housing (6) and at least one resilient force clamping connection (2) that is received at least in part by the insulated housing (6), wherein the resilient force clamping connection (2) comprises: a busbar (3), and a clamping spring (4) having a support limb (40), a resilient bend (41) that adjoins the support limb (40), and a clamping limb (42) that adjoins the resilient bend (41), wherein the clamping limb (42) comprises at a free end (420) that is remote from the resilient bend (41) a clamping section (421) so as to form a conductor clamping site (K) between the clamping section (421) and the busbar (3) so as to electrically connect a conductor (L) to the resilient force clamping connection (2), wherein at least one actuating limb (43) extends from the clamping limb (42) between the resilient bend (41) and the free end (420) in a direction away from the support limb (40), wherein the actuating limb (43) comprises an actuating section (430) in order to cooperate with a release element (5) so as to open the conductor clamping site (K), wherein the clamping limb (42) and the actuating section (430) of the actuating limb (43) are separated from one another by means of a partition wall (63) that is formed by the insulated housing (6).

2. The terminal block (1) in accordance with claim 1, wherein at least the resilient bend (41) or the clamping spring (4) is embodied essentially in a U-shaped manner.

3. The terminal block (1) in accordance with claim 1, wherein the actuating limb (43) extends laterally with respect to the clamping limb (42).

4. The terminal block (1) in accordance with claim 1, wherein the actuating section (430) is provided at a free end (431) of the actuating limb (43), said free end being remote from the clamping limb (42).

5. The terminal block (1) in accordance with claim 1, wherein the actuating limb (43) comprises, on the actuating section (430), a bend section (432) that is curved in the direction of the clamping section (421) or of the conductor clamping site (K).

6. The terminal block (1) in accordance with claim 1, wherein the busbar (3) comprises a conductor feedthrough opening (31).

7. The terminal block (1) in accordance with claim 6, wherein the clamping spring (4) with its support limb (40) is mounted in the busbar (3) on a mounting side (32) of the conductor feedthrough opening (31) in such a manner that the clamping limb (42) lies at a side (33) that is remote from the mounting side (32) against the busbar (3) so as to form the conductor clamping site (K) and in the case of an open conductor clamping site (K) reveals the conductor feedthrough opening (31) at least in part in a conductor feed-in direction (E).

8. The terminal block (1) in accordance with claim 1, wherein the clamping section (421) is embodied as a clamping edge.

9. The terminal block (1) in accordance with claim 1, wherein the terminal block (1) is a connection terminal or connecting terminal.

10. The terminal block (1) in accordance with claim 9, wherein the clamping limb (42) and each of the actuating limbs (43) are separated from one another by means of the partition wall (63) in each actuating position of the clamping spring (4).

11. The terminal block (1) in accordance with claim 1, wherein the insulated housing (6) comprises for each conductor clamping site (K) at least one conductor feed-in duct (60) that extends in a conductor feed-in direction (E) to the conductor clamping site (K), wherein the partition wall (63) delimits the conductor feed-in duct (60) at least in part laterally.

12. The terminal block (1) in accordance with claim 1 moreover comprising a release element (5), which can be moved between an idle position in which the clamping limb (42) pushes into a closed position of the conductor clamping site (K), and an actuating position in which the release element (5) cooperates with the actuating limb (43) in such a manner that the conductor clamping site (K) is opened.

13. The terminal block (1) in accordance with claim 12, wherein the release element (5) is arranged on a side of the clamping limb (42), said side lying opposite the support limb (40).

14. The terminal block (1) in accordance with claim 12, wherein the release element (5) is embodied in a planar manner, wherein in the idle position the release element (5) extends along one side of the insulated housing (6) or essentially laterally with respect to the resilient force clamping connection (2) or laterally with respect to the conductor feed-in duct (60) or parallel to a conductor feed-in direction (E).

15. The terminal block (1) in accordance with claim 12, wherein the release element (5) comprises a clamping spring actuating section (50) with which it cooperates at least in the actuating position with the actuating section (430) of said actuating limb (43), so as to open the conductor clamping site (K), and said release element comprises a lever actuating section (51) so as to move the release element (5) between the idle position and the actuating position.

16. The terminal block (1) in accordance with claim 15, wherein the clamping spring actuating section (50) and the lever actuating section (51) are provided on opposite-lying ends of the release element (5).

17. The terminal block (1) in accordance with claim 12, wherein the release element (5) is mounted in a rotational manner or a translational manner or a rotational and translational manner in the insulated housing (6) in order to be moved between the idle position and the actuating position.

18. The terminal block (1) in accordance with claim 17, wherein in the case of a rotational mounting, an axis of rotation (D) of the release element (5) extends in a transverse manner or perpendicular manner to the resilient force clamping connection (2) and to a conductor feed-in direction (E) or to the conductor feed-in duct (60), wherein the axis of rotation (D) extends laterally outside the conductor feed-in duct (60).

19. The terminal block (1) in accordance with claim 12, wherein the release element (5) comprises mounting sections (52) for the rotational mounting or for the translational mounting or for the rotational and translational mounting in the insulated housing (6), wherein the mounting sections (52) are arranged between the clamping spring actuating section (50) and the lever actuating section (51).

20. The terminal block (1) in accordance with claim 1, wherein two actuating limbs (43) extend on both sides of the clamping limb (42) and away from the clamping limb (42).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further configurations, features and advantages of the present invention are described below with the aid of the Figures and accompanying drawings. In the drawings:

(2) FIG. 1 illustrates a perspective view of a terminal block in accordance with the invention having a resilient force clamping connection in accordance with the invention in accordance with an exemplary embodiment of the present invention,

(3) FIG. 2A illustrates a lateral sectional view of the terminal block in accordance with FIG. 1 having a closed release element (release lever) and consequently a closed clamping site of the resilient force clamping connection,

(4) FIG. 2B illustrates a lateral sectional view of the terminal block in accordance with FIG. 1 having an open release element (release lever) and consequently an open clamping site of the resilient force clamping connection,

(5) FIG. 3A illustrates a frontal sectional view of the terminal block in accordance with FIG. 1 having a closed release element (release lever) and consequently a closed clamping site of the resilient force clamping connection,

(6) FIG. 3B illustrates a frontal sectional view of the terminal block in accordance with FIG. 1 having an open release element (release lever) and consequently an open clamping site of the resilient force clamping connection,

(7) FIG. 4A illustrates a lateral view of the resilient force clamping connection in accordance with the invention and a lateral view of the release element (release lever) of the terminal block in accordance with FIG. 1 having a closed release element (release lever) and consequently a closed clamping site of the resilient force clamping connection,

(8) FIG. 4B illustrates a lateral view of the resilient force clamping connection in accordance with the invention and a lateral view of the release element (release lever) of the terminal block in accordance with FIG. 1 having a slightly open release element (release lever) and a still closed clamping site of the resilient force clamping connection,

(9) FIG. 4C illustrates a lateral view of the resilient force clamping connection in accordance with the invention and a lateral view of the release element (release lever) of the terminal block in accordance with FIG. 1 having a closed release element (release lever) and consequently a closed clamping site of the resilient force clamping connection,

(10) FIG. 5A illustrates a frontal view of the resilient force clamping connection in accordance with the invention in accordance with the exemplary embodiment,

(11) FIG. 5B illustrates a lateral view of the resilient force clamping connection in accordance with FIG. 5A, and

(12) FIG. 5C illustrates a perspective view of the resilient force clamping connection in accordance with FIG. 5A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(13) The Figures illustrate different views of a terminal block 1 in accordance with the invention and of a resilient force clamping connection 2 in accordance with the invention for such a terminal block 1. The terminal block 1 is preferably a connection terminal or connecting terminal. The terminal block 1 or rather the resilient force clamping connection 2 serves to electrically connect at least one electrical conductor.

(14) Initially, the resilient force clamping connection 2 is described with reference to FIGS. 2 to 5 (i.e. FIGS. 2A, 2B, 3A, 3B, 4A, 4B, 4C, 5A, 5B and 5C).

(15) The resilient force clamping connection 2 comprises a busbar 3 and at least one clamping spring 4. The clamping spring 4, as illustrated, can be preferably embodied in an essentially U-shaped manner. In the illustrated embodiment, three clamping springs 4 are provided here for each busbar 3 and said clamping springs are provided or arranged adjacent to one another in a row, as is apparent in particular in FIGS. 5A and 5C. However, it is also conceivable to provide fewer or more clamping springs 4 for each busbar 3 and also to arrange them in a different manner relative to one another (for example opposite one another). The invention is not limited here to the number and arrangement of the clamping springs 4 for each busbar 3.

(16) The clamping spring 4 in turn comprises a support limb 40, a resilient bend 41 that adjoins the support limb 40, and a clamping limb 42 that adjoins the resilient bend 41. These three elements 40-42 form in this case in accordance with the illustrated exemplary embodiment essentially the U-shape of the clamping spring 4, as is apparent for example in FIGS. 2A, 3A, 4A and 5B. It is preferred that at least the resilient bend 41 is U-shaped.

(17) The clamping limb 42 comprises at a free end 420 that is remote from the resilient bend 41 a clamping section 421 so as to form a conductor clamping site K between the clamping section 421 and the busbar 3 so as to electrically connect a conductor to the resilient force clamping connection 2. In this case, the busbar 3 comprises preferably a clamping edge section 30 against which the clamping section 421 lies securely and in addition against which the clamping limb 42 or rather its clamping section 421 pushes as a result of the resilient force of the clamping spring 4. The clamping section 421 is preferably embodied as a clamping edge in order to provide a concentrated as possible clamping force so as to securely connect an electrically conductor in the conductor clamping site K.

(18) As is apparent for example in FIGS. 2A, 2B and 5C, the busbar 3 can comprise a conductor feedthrough opening 31. This is preferably provided downstream of the clamping site K when viewed in a conductor feed-in direction E. Consequently, it is possible for a conductor that is connected to the resilient force clamping connection 2 to be received securely in the busbar 3, whereby a secure electrical contact is ensured.

(19) The clamping spring 4 is preferably mounted with its support limb 40 in the busbar 3. It is preferred, as illustrated in FIGS. 5B and 5C, that the support limb 40 is clipped for this purpose in the busbar 3; this is preferably with a mounting section 400 against a free end 401 of the support limb, said free end being opposite the resilient bend 41. It is particularly preferred for this purpose that the support limb 40 can be mounted or rather clipped in on a mounting side 32 of the conductor feedthrough opening 31 or rather of the busbar 3 in such a manner that the clamping limb 42 lies against the busbar 3 at a side 33 that is remote from the mounting side 32 so as to form the conductor clamping site K and optionally in the case of an open conductor clamping site K reveals the conductor feedthrough opening 31 at least in part in the conductor feed-in direction E, such as is apparent for example when viewing FIGS. 5A, 4A and 4C.

(20) In accordance with the invention, at least one actuating limb 43 extends from the clamping limb 42 between the resilient bend 41 and the free end 420 in a direction away from the support limb 40; thus therefore directed away in the upwards direction in the illustrated Figures.

(21) As is particularly apparent in FIGS. 5A and 5C, in this case the actuating limb 43 preferably extends at the side of the clamping limb 42 accordingly away from the clamping limb 42. In the preferred embodiment illustrated here, the clamping spring 4 comprises here two actuating limbs 43. These then preferably extend on both sides of the clamping limb 42 accordingly away from the clamping limb 42.

(22) The actuating limb 43 comprises an actuating section 430 in order to cooperate with a release element 5 so as to open the conductor clamping site K.

(23) As is apparent for example in FIGS. 4 and 5, the actuating section 430 can be provided at a free end 431 of the actuating limb 43, said free end being remote from the clamping limb 42.

(24) As is apparent for example in FIGS. 4 and 5, the actuating limb 43 can comprise at the free end 431 that is remote from the clamping limb 42, preferably on the actuating section 430, a bend section 432 that is preferably curved in the direction of the clamping section or rather of the clamping edge 421 or of the conductor clamping site K. It is thus possible for a release element 5 to engage with the actuating limb 43 in a particularly simple manner, as is apparent for example in FIGS. 2 and 4.

(25) Fundamentally, the respective limbs of the clamping spring 4 (in other words: support limb 40, resilient bend 41, clamping limb 42, actuating limb 43) can comprise any desired number of sections that are bent and/or curved toward one another. The clamping spring 4 or rather its resilient bend 41 is also not limited to a U-shape.

(26) The above mentioned terminal block 1 in accordance with the invention is now described below in particular with reference to FIGS. 1 to 3.

(27) The terminal block 1 comprises an insulated housing 6 and at least one resilient force clamping connection 2 in accordance with the invention that is received in the insulated housing 6 at least in part and here completely, as has already been described above by way of example with reference to FIGS. 2 to 5.

(28) The insulated housing 6 can comprise for each clamping site K or rather clamping spring 4 at least one conductor feed-in duct 60 that extends in a conductor feed-in direction E to the conductor clamping site K. When viewed in the conductor feed-in direction E, this duct 60 is delimited preferably around all sides by the insulated housing which as a result forms a preferably circumferentially closed duct wall 61 and consequently the conductor feed-in duct 60 that is illustrated here. The conductor feed-in duct 60 tapers preferably toward the clamping site K so as to form a conductor feed-in funnel in order to guide the conductor in a simple manner securely to the clamping site K.

(29) It is preferred that the resilient force clamping connection 2 is provided in the insulated housing 6 in such a manner that the clamping spring 4 is oriented with the resilient bend 41 facing a feed-in opening 62 of the conductor feed-in duct 60, as is particularly apparent in FIGS. 2A and 2B. The clamping spring 4 is thus arranged in such a manner that the support limb 40 and the clamping limb 42 extend in the conductor feed-in direction E away from the resilient bend 41 to the clamping site K. In this case, the clamping limb 42 is preferably arranged in such a manner that in the closed idle position of the clamping spring 4 or rather of the clamping site K said clamping limb passes transversely through the conductor feed-in duct 60 and consequently serves as a feed-in chamfer for a conductor that is to be fed into the resilient force clamping connection 2 or rather is fed into the conductor feed-in duct 60.

(30) The clamping limb 42 and each of the actuating limbs 43, at least of the actuating section 430 of the respective actuating limb 43, can be separated from one another by means of a partition wall 63 that is formed by the insulated housing 6; this preferably in each actuating position of the clamping spring 4. This is indicated by way of example in FIGS. 2A and 2B by means of dashed lines of the actuating limb 43 and is apparent in FIGS. 3A and 3B. As is likewise apparent in the Figures mentioned, in accordance with the illustrated embodiment the partition wall 63 preferably delimits the conductor feed-in duct 60 at least in part laterally. Consequently, it is possible to provide a spatial separation between the conductor feed-in duct 60 or rather a clamping space 65 on the one hand and an actuating space 64 that receives the actuating limb 43 or rather actuating sections 430 on the other hand. The partition wall 63 preferably comprises a recess 630 in order in the case of a spatially separated clamping limb 42 and actuating limb 43 or rather actuating section 430 to render possible an appropriate separation over the entire movement path of the clamping spring 4 (in other words of the clamping limb 42 and consequently of the actuating limb 43).

(31) The actuating limb 43 that protrudes upwards here provides a possibility for shortening the access path of a release element to the actuating section. Consequently, it is not necessary for a release element to advance as far as the “actual clamping spring 4” (in other words in particular as far as the clamping limb 42) since the clamping spring 4 can already be actuated at the upright tab (in other words the actuating limb 43). It is conceivable for example to use as a release element a separate part, such as for example a screw driver, with which the actuating limb 43 or rather its actuating section 430 is gripped and thus the clamping limb 42 can be moved here downward so as to open the clamping site K. For this purpose, the insulated housing can comprise an appropriate through-going duct between the actuating section 430 and the outer side of the terminal block 1 (here for example directed upward away from the actuating section 430). It is also conceivable to provide a pusher in such a duct.

(32) In accordance with a particularly preferred embodiment, however, it is also conceivable that the terminal block 1 itself moreover comprises a release element 5, such as a release lever that is illustrated here or also a release slide. The release element 5 can then be moved between an idle position (cf. for example FIGS. 1, 2A, 3A, 4A) in which the clamping limb 42 pushes into a closed position of the conductor clamping site K, and an actuating position (cf. for example FIGS. 2B, 3B, 4C) in which the release element 5 cooperates with the actuating limb 43 (or rather its actuating section 430) in such a manner that the conductor clamping site K is opened. By virtue of providing the actuating section 430 as a bend section 432, it is possible to perform an actuation in a safe and simple manner during the entire movement path of the release element 5.

(33) The release element 5 can preferably be arranged on a side of the clamping limb 42, said side lying opposite the support limb 40, (in other words here above the clamping limb 42), whereby the release element 5 can be positioned in a particularly favorable manner and close to the actuating section 430.

(34) The release element 5 is preferably embodied in a planar manner and, as is particularly apparent in FIGS. 2 to 4, extends particularly preferably essentially in one plane.

(35) As is apparent for example in FIGS. 1, 2A and 4A, in the idle position the release element 5 can extend preferably along one side (here the upper side) of the insulated housing 6 or essentially laterally (here the upper side/above) with respect to the resilient force clamping connection 2 or laterally (here the upper side/above) with respect to the conductor feed-in duct 60 or parallel to a conductor feed-in direction E in order to form a terminal block 1 that is embodied in a particularly planar manner.

(36) The release element 5 can comprise a clamping spring actuating section 50 with which it cooperates at least in the actuating position (cf. for example FIGS. 2B, 3B, 4C) with the actuating limb 43, preferably with the actuating section 430 of said actuating limb, so as to open the conductor clamping site K. Moreover, the release element 5 can comprise a lever actuating section 51 so that a user can move the release element 5 between the idle position and the actuating position. The clamping spring actuating section 50 and the lever actuating section 51 can be provided in this case preferably on opposite-lying ends of the release element 5, such as is clearly apparent in FIGS. 2 to 4.

(37) The release element 5 can be moved in different manners between the idle position and the actuating position; preferably in a defined movement. Thus, as illustrated in the exemplary embodiment, the release element 5 can be mounted for example in a rotational manner in the housing in order for said release element to be moved between the idle position and the actuating position. It is also conceivable to mount the release element in the housing in a translational manner (for example by means of a release slide) or also in a rotational and translational manner.

(38) In the case of the rotational mounting illustrated here, an axis of rotation D of the release element 5 can preferably extend in a transverse manner or perpendicular to the resilient force clamping connection 2 and preferably to a conductor feed-in direction E or to the conductor feed-in duct 60. As is particularly apparent in FIGS. 2 and 3, the axis of rotation D can in this case particularly preferably extend laterally outside (here above) the conductor feed-in duct 60.

(39) The release element 5 can preferably comprise mounting sections 52 so as to provide the rotational and/or translational mounting in the insulated housing 6. In this case, it can be an axis section 52 that is illustrated here by way of example and that is embodied here about the axis of rotation D in order to render it possible for the release element 5 to pivot about the axis of rotation. The mounting section 52 is in this case preferably mounted in corresponding mounting sections 64 of the insulated housing 6. In the case of a translational mounting arrangement, it is conceivable that the release lever 5 on the one hand and the insulated housing on the other hand comprise a corresponding mounting section in the form of rail-like guides. The mounting sections 52 are preferably arranged between the clamping spring actuating section 50 and the lever actuating section 51, as is particularly apparent in FIGS. 2 and 3.

(40) Moreover, the release element 5 can comprise latching structures 53 with which it can be releaseably fixed here preferably at least in the idle position. The latching structures 53 cooperate in this case preferably in a latching manner with corresponding latching structures 66 of the insulated housing 6, as is apparent for example in FIG. 2A.

(41) The clamping spring actuating section 50 can preferably comprise an actuating mounting section 54 that protrudes in a direction parallel to the axis of rotation D. In the illustrated exemplary embodiment, the release element comprises two such actuating bearing sections 54, which here preferably protrude toward one another, as is particularly apparent in FIG. 3B. It is possible to provide between these actuating mounting sections 54 and the mounting section 52 in the insulated housing 6 preferably a guiding bend section 67 along which the actuating bearing sections 54 moves here in the case of a rotational movement about the axis of rotation and said guiding bend section supports the release element 5. The release element 5 is thus also mounted in the open actuating position securely in the insulated housing 6. The release element 5 then comprises at its side remote from the guiding bend section 67 a release actuating section 55 of the clamping spring actuating section 50 which cooperates with the actuating section 430 so as to open the clamping spring 4. In this case, the release actuating section 55 preferably comprises a curved shape in order to cooperate with the actuating section 430. Since in the actuating position of the release element 5 the clamping spring actuating section 50 or rather its release actuating section 55 is arranged between the clamping spring 4 (or rather the actuating limb 43 or its actuating section 430) on the one hand and the insulated housing 6 or its guiding bend section 67 on the other hand, it is possible to minimize the lever forces for opening the clamping site K or rather to minimize the loads on the insulated housing 6.

(42) The present invention is not limited to the above described exemplary embodiment insofar as it is covered by the subject matter of the following claims.