阅读说明：本技术 电气接线端子 (Electrical connection terminal ) 是由 凯文·贝格哈恩 于 2020-03-27 设计创作，主要内容包括：本发明涉及一种用于连接导体(200)的电气接线端子(100),具有：母线(10)；夹箍弹簧(11),借助所述夹箍弹簧在夹紧状态下将导体(200)抵向母线(10)夹紧；以及操纵元件(32),其用于使夹箍弹簧(11)从夹紧状态进入未夹紧状态,其中夹箍弹簧(11)构建为板簧,以及,设有容置元件(12),夹箍弹簧固定在该容置元件上,其中容置元件(12)具有保持元件(16),夹箍弹簧(11)在未夹紧状态下保持在该保持元件上,并且夹箍弹簧(11)在夹紧状态下与该保持元件分离,其中为了将夹箍弹簧(11)从保持元件(16)分离,保持元件(16)具备可偏转性,其中保持元件(16)具有按压面(21),所述按压面是可被待连接的导体(200)操纵,以实施偏转运动。(The invention relates to an electrical connection terminal (100) for connecting conductors (200), comprising: a bus bar (10); a clamping spring (11) by means of which the conductor (200) is clamped against the busbar (10) in the clamped state; and an actuating element (32) for bringing the clamping spring (11) from the clamped state into the unclamped state, wherein the clamping spring (11) is designed as a leaf spring, and a receiving element (12) is provided, to which the clamping spring is fastened, wherein the receiving element (12) has a retaining element (16), on which the clamping spring (11) is retained in the unclamped state and from which the clamping spring (11) is separated in the clamped state, wherein the retaining element (16) has a deflectable property for separating the clamping spring (11) from the retaining element (16), wherein the retaining element (16) has a pressing surface (21) which can be actuated by a conductor (200) to be connected in order to carry out a deflecting movement.)

1. An electrical connection terminal (100) for connecting a conductor (200) has

A bus bar (10) which is provided with a plurality of bus bars,

a clamping spring (11) by means of which the conductor (200) is clamped in the clamped state against the busbar (10), and

an actuating element (32) for bringing the clamping spring (11) from a clamped state into an unclamped state,

characterized in that the clamping spring (11) is designed as a leaf spring and that a receiving element (12) is provided, to which the clamping spring is fastened, wherein the receiving element (12) has a retaining element (16), to which the clamping spring (11) is retained in the non-clamped state and from which the clamping spring (11) is separated in the clamped state, wherein the retaining element (16) has a deflectable property for separating the clamping spring (11) from the retaining element (16), wherein the retaining element (16) has a pressing surface (21), which can be actuated by a conductor (200) to be connected in order to perform a deflecting movement.

2. The electrical terminal (100) according to claim 1, characterised in that the receiving element (12) has a receiving groove (15) for receiving the clamping spring (11), wherein a resilient web (17) is formed on the receiving groove (15), on which web the retaining element (16) is arranged.

3. The electrical connection terminal (100) according to claim 2, wherein the resilient tab (17) has a cross-sectional reduction (24) along its length.

4. The electrical connection terminal (100) according to one of claims 1 to 3, characterised in that the retaining element (16) has two catch flanges (18, 19) opposite one another for retaining the clip spring (11) in the clamped state, wherein the catch flanges (18, 19) are bent relative to one another.

5. The electrical connection terminal (100) according to one of claims 1 to 4, characterised in that the clamping spring (11) has a clamping region by means of which the conductor (200) is clamped in the clamped state against the busbar (10), wherein the clamping region has two actuating surfaces (30, 31) which are formed on the side of the clamping region and by means of which the actuating element (32) actuates the clamping spring (11).

6. The electrical connection terminal (100) according to any one of claims 1 to 5, characterised in that the busbar (10) is fixed to the housing element (12).

7. The electrical connection terminal (100) according to any one of claims 1 to 6, characterised in that the actuating element (32) has an actuating direction (B) which is transverse to an insertion direction (E) of the conductor (200) to be connected into the electrical connection terminal (100).

8. The connection terminal (100) according to one of claims 1 to 7, characterised in that the actuating element (32) has two actuating fingers (38, 39) which are opposite one another and are used for actuating the clamping spring (11), wherein a free space is formed between the two actuating fingers (38, 39) for the conductor (200) to be connected to pass through.

9. The connection terminal (100) according to any one of claims 1 to 8, characterised in that an insulating material housing (33) is provided, in which the bus bar (10), the clamping spring (11), the actuating element (32) and the receiving element (12) are arranged.

Technical Field

The invention relates to an electrical connection terminal for connecting conductors, comprising: a bus bar; a clamp spring by which the conductor is clamped against the busbar in the clamped state; and an operating element for bringing the clamping spring from the clamped state into the unclamped state.

Background

Such connecting terminals usually have a leg spring with a retaining leg and a clamping leg, wherein the conductor inserted into the connecting terminal can be clamped against the busbar by means of the clamping leg. If, in particular, a flexible conductor is clamped, the clamping spring has to be actuated by means of an actuating element before the conductor is inserted, so that the clamping spring or the clamping foot is deflected away from the busbar in order to insert the conductor into the intermediate space between the busbar and the clamping spring. Only when the conductor is rigid and thus stable can the conductor apply sufficient force to the clamping spring or the clamping foot of the clamping spring, so that the clamping foot is deflected away from the busbar without the user having to actuate the actuating element for this purpose. In the case of flexible conductors, the user is first required to insert and clamp the flexible conductor by actuating the actuating element such that the clamping spring is deflected away from the busbar. The handling of the handling element by the user makes the installation or connection of the conductors more difficult, since the operation is cumbersome and the time consumption increases.

Disclosure of Invention

It is therefore an object of the present invention to provide an electrical connection terminal in which the connection of flexible conductors can be simplified.

The solution of the invention to achieve the above object is characterized by the features of the independent claims. Preferred embodiments and advantageous developments of the invention are disclosed in the dependent claims.

The terminal of the invention is characterized in that the clamping spring is designed as a leaf spring and that a receiving element is provided, to which the leaf spring is fastened, wherein the receiving element has a retaining element, to which the clamping spring is retained in the unclamped state and from which the clamping spring is separated in the clamped state, wherein the retaining element has a deflectable property for separating the clamping spring from the retaining element, wherein the retaining element has a pressing surface which can be actuated by the conductor to be connected in order to execute a deflecting movement.

With the terminal according to the invention, the flexible conductor can be connected in the terminal and clamped against the busbar without actuating the actuating element. The clamping spring is not designed as a leg spring, but as a leaf spring with an elongated shape. The clamping spring thus has a plate-like or strip-like contour. The clamping spring, which is designed as a leaf spring, has a fastening region on the first end section, by means of which the clamping spring is fastened to the receiving element. On a second end section opposite the first end section, the clamping spring has a clamping region which, in the clamped state, is in direct contact with the conductor, thereby clamping the conductor against the busbar. The receiving element, to which the clamping spring is fixed by means of its first end section, has a holding element, on which the clamping spring is held by means of its second end section in the clamped state in such a way that the clamping spring, in particular the second end section thereof forming the clamping region, is deflected away from the busbar, so that a conductor, in particular a flexible conductor, is inserted into the intermediate space formed thereby between the busbar and the clamping spring, without the clamping spring having to be actuated beforehand by means of an actuating element. The holding element has a pressing surface which is arranged in an insertion region of the connection terminal into which the conductor is inserted, so that the conductor is pressed against the pressing surface during insertion of the connection terminal. By applying a pressing force to the pressing surface by means of the conductor, the holding element can be brought into a deflecting movement, so that the holding element is moved away in the insertion direction of the conductor. The clamping spring can be separated from the holding element by a deflection movement of the holding element, so that the clamping spring can be moved, in particular deflected, by means of its clamping region toward the inserted conductor and can thereby clamp the inserted conductor against the busbar. By means of this particular mechanism, the connection of the flexible conductor can be realized particularly simply by an insertion movement of the conductor without the user having to manipulate other elements on the terminal, such as a manipulating element. This simplifies the handling of the connection terminal and also saves time during the connection of the conductors. In order to release the conductor to be connected from the clamped state again, the clamping spring can be pivoted back with its clamping region by means of the actuating element toward the holding element and the clamping spring can be fixed in a positionally fixed manner, in particular snapped onto the holding element.

The receiving element preferably has a receiving groove into which the clamping spring can be inserted, wherein an elastic web can be formed on the receiving groove, on which the holding element can be arranged. The accommodating groove is preferably constructed as follows: the accommodating groove surrounds the clamping spring arranged in the accommodating groove, so that the clamping spring is held in the accommodating groove in a position fixing mode. An elastic web can be formed on this receiving groove, and the retaining element can be arranged at the end of this web. The elastic web enables an elastic movement of the holding element relative to the receiving groove, and thus also a pivoting movement of the holding element for separating the clip spring from the holding element. Therefore, the holding member can perform a deflecting motion with respect to the accommodating groove. The receiving groove, the elastic web and the holding element are preferably formed integrally with one another.

In order to further improve the elastic effect of the elastic tab, the elastic tab may have a cross-sectional reduction along its length. The cross-sectional reduction may be constructed in the form of a narrow portion such that the width of the tab varies along its length. The width reduction and the cross-sectional reduction are preferably carried out toward the holding element such that the width of the web is greater in the region in which the web connects to the receiving groove than in the region in which the web connects to the holding element.

In order to hold the clip spring in the clamped state, the holding element can have two catch flanges which are opposite one another and which can be bent relative to one another. The snap-in lugs can each have an undercut, on which the clamping spring can be held, in particular snapped in, by means of its clamping region in the undamped state. The holding element may be U-shaped, wherein the snap-in flanges may be formed on two mutually opposite legs of the U-shape of the holding element. Wherein the first catch flange can be formed on a first limb and the second catch flange can be formed on a second limb of the U-shaped holding element opposite the first limb. The legs preferably extend parallel to each other. The snap flanges are then bendable relative to each other, so that they can extend from the connection with the edge legs towards each other. This improves the snap-fit of the clip spring on the snap flange.

The clamping spring can have a clamping region for clamping the conductor against the busbar in the clamped state, wherein the clamping region can have two actuating surfaces which are formed on the side of the clamping region and are used for actuating the clamping spring by an actuating element. By means of the control surfaces formed on the side edges, the clamping spring can have a greater width in its clamping region than the rest of the clamping spring. The actuating surface can form a pressing surface for the actuating element in order for the actuating element to actuate the clamping spring at the level of the clamping region of the clamping spring. The strength of the pressing force to be applied to the clamping spring by the actuating element for bringing the clamping spring from the clamped state into the unclamped state can thereby be reduced.

Furthermore, the bus bar can also be fixed to the receiving element. The bus bar can be placed in the containing groove of the containing element like the clamping spring. The clip spring may be disposed on a bottom section of the receiving groove, and the bus bar may be disposed on a top section of the receiving groove opposite to the bottom section such that the clip spring and the bus bar are opposite to each other. In particular, in the unclamped state, the clamping spring and the busbar can be arranged in a substantially parallel arrangement to one another. The busbar can be fixed to the receiving element by means of a snap connection.

Preferably, the following scheme is adopted by the operating element: the actuating direction of the actuating element is transverse to the insertion direction of the conductor to be connected into the electrical connection terminal. The actuating element is preferably actuated along a longitudinal axis of the actuating element, so that the actuating element is arranged in the connecting terminal in a preferably longitudinally displaceable manner. Wherein the actuating element is arranged in a longitudinally displaceable manner, preferably in a direction transverse to the conductor insertion direction. The actuating direction of the actuating element is therefore preferably not parallel to the insertion direction of the conductor.

The actuating element preferably has two actuating fingers arranged opposite one another for actuating the clamping spring, wherein a free space can be formed between the two actuating fingers for the conductor to be connected to pass through. For actuating the clamping spring, the actuating element can therefore be passed by its two actuating fingers on the side of the conductor. Due to this design of the actuating element, a particularly compact solution of the connecting terminal can be achieved. The two actuating fingers preferably extend in the direction of the longitudinal axis of the actuating element and can thus be designed as extensions of the actuating element.

Furthermore, it is preferred that the connecting terminal has an insulating material housing in which the busbar, the clamping spring, the actuating element and the receiving element can be arranged. The insulating material housing may have a conductor insertion opening and an accommodation opening for the actuating element, wherein the conductor insertion opening may be formed on a first side of the insulating material housing, and wherein the accommodation opening may be formed on a second side of the insulating material housing extending transversely to the first side.

Drawings

The present invention will be described in detail with reference to preferred embodiments with reference to the accompanying drawings.

Wherein:

fig. 1 is a perspective schematic view of an electrical terminal of the invention, including a clamping spring in an undamped condition,

figure 2 is a schematic side view of the terminal shown in figure 1,

figure 3 is a schematic view of the terminal shown in figures 1 and 2 including a housing of insulating material,

fig. 4 is a schematic view of a terminal of the invention, with the clamping spring in a clamped condition and a conductor attached,

fig. 5 is a schematic view of the terminal block shown in fig. 3 comprising a housing of insulating material and an operating element, an

Fig. 6 is a schematic view of the terminal with the clip spring returned from a clamped state to an unclamped state.

Detailed Description

Fig. 1 shows an electrical connection terminal 100 for connecting an electrical conductor 200, having a busbar 10 and a clamping spring 11, wherein for connecting the conductor 200, this conductor is clamped against the busbar 10 by means of the clamping spring 11. Both the clamping spring 11 and the busbar 10 are arranged on the receiving element 12.

The clamping spring 11 is designed as a leaf spring, which is in the form of a plate or a strip. The clamping spring 11 is inserted into the receiving element 12 and is fixed to the receiving element 12. For this purpose, the clamping spring 11 has a fastening region on the first end section 13, by means of which the clamping spring 11 is fastened to the receiving element 12. On a second end section 14 opposite the first end section 13, the clamping spring 11 forms its clamping region, by means of which the clamping spring 11 clamps the conductor 200 inserted into the connecting terminal 100 against the busbar 10 in the clamped state and thereby electrically contacts the conductor. At its second end section 14, which forms the clamping region, the clamping spring 11 has two actuating surfaces 30, 31 formed laterally for actuating the clamping spring 11 by an actuating element 32.

The receiving element 12 has a receiving groove 15 and a holding element 16, wherein the receiving groove 15 and the holding element 16 are connected by an elastic web 17.

The holding element 16 serves to hold the clamping spring 11, in particular on the second end section 14 of the clamping spring forming the clamping region, in the undamped state, i.e. in the case of a clamping spring 11 not clamping the conductor 200 against the busbar 10, so that a free space or intermediate space into which the conductor 200 can be inserted is formed between the busbar 10 and the clamping spring 11, as shown in fig. 1, for example.

The holding element 16 is U-shaped. On a wall 20 formed between two legs 18, 19 extending parallel to one another, the holding element 16 has a pressing surface 21 which faces the conductor 200 to be inserted. When the conductor 200 to be connected is inserted into the connection terminal 100, this conductor 200 can be pressed against the pressing surface 21, so that the entire holding element 16 is deflected in the deflection direction S away from the conductor 200 and thus also away from the clip spring 11, so that the clip spring 11 is separated from the holding element 16 and is thereby moved by the second end section 14 of the clip spring toward the busbar 10, so that the inserted conductor 200 is clamped against the busbar 10.

Formed on the two limbs 18, 19 of the holding element 16 are in each case snap lugs 22, 23 which in each case have an undercut, on which the clip spring 11 can snap back in the undamped state in order to be held on the holding element 16. Unlike the legs 18, 19, the snap flanges 22, 23 do not extend parallel to each other, but are bent relative to each other so as to extend towards each other.

The holding element 16 is designed to be movable, in particular pivotable, relative to the receiving groove 15 by means of an elastic web 17. The holding member 16 itself has rigidity. The resilient tab 17 thus effects a pivoting movement of the holding element 16 in the pivoting direction S when the conductor 200 is pressed against the holding element 16, and, in the event that the conductor 200 is no longer clamped, the tab 17 pivots the holding element 16 back into its starting position counter to the pivoting direction S, so that the clamping spring can be retained or snapped back on the holding element 16 in the undamped state.

In order to increase the spring effect, the spring-loaded web 17 has a cross-sectional reduction 24 along its length, so that the web 17 is locally narrowed, as shown in particular in fig. 6. The cross-sectional reduction 24 is formed towards the holding element 16 such that the web 17 has a smaller cross section and a smaller width in the region of the connection of the web 17 to the holding element 16 than in the region of the connection of the web 17 to the receiving groove 15.

The receiving groove 15 is configured to surround the periphery of the clip spring 11 placed in the receiving groove 15. The receiving groove 15 also forms a window-like opening 25 through which the conductor 200 to be connected passes during the connection process, as shown in fig. 4. The window-like opening 25 is closed in the circumferential direction. The accommodation groove 15 has the same rigidity as the holding member 16.

The busbar 10 is also held on the receiving element 12 in such a way that the busbar 10 is fixed on the receiving groove 15. The busbar 10 is inserted into the receiving groove 15 of the receiving element 12 in the same way as the clamping spring 11. The clip spring 11 is arranged on the bottom section 26 of the receiving groove 15, and the bus bar 10 is arranged on the top section 27 of the receiving groove 15 opposite to the bottom section 26 such that the clip spring 11 and the bus bar 10 are opposite to each other. The busbar 10 is fixed to the receiving element 12 by means of a snap connection. For this purpose, the receiving element 12 has two opposing recesses 28, 29 in the region of the receiving groove 15, into which the busbar 10 can be snapped.

Fig. 2 is a side view of the terminal 100 shown in fig. 1, wherein it can be seen that the clamping spring 11 lies flat on the receiving element 12, in particular on the receiving groove 15 of the receiving element 12, in the region of its first end section 13.

Fig. 3 shows an insulating material housing 33 of the connecting terminal 100, in which the busbar 10, the clamping spring 11, the receiving element 12 and the actuating element 32 are arranged. The insulating material housing 33 has a conductor insertion opening 34 for inserting the conductor 200 into the connecting terminal 100 and has an accommodation opening 35 for guiding the actuating element 32 in a longitudinally movable manner, wherein the conductor insertion opening 34 is formed on a first side 36 of the insulating material housing 33 and wherein the accommodation opening 35 is formed on a second side 37 of the insulating material housing 33 extending transversely to the first side 36. The actuating element 32 therefore has an actuating direction B which is transverse to the insertion direction E of the conductor 200 to be connected into the connecting terminal 100.

The actuating element 32 is constructed in the form of a push block (Pusher). As shown in fig. 5, for example, the actuating element 32 has two actuating fingers 38, 39 opposite one another on its end facing the clamping spring 11, wherein a free space is formed between the actuating fingers 38, 39 for the conductor 200 to be connected to pass through. In order to bring the clamping spring 11 from the clamped state into the unclamped state, the actuating fingers 38, 39 can apply a pressing force to the actuating surfaces 30, 31 of the clamping spring 11, so that the clamping spring is moved away from the conductor 200 and is snapped back onto the holding element 16 by means of the second end section 14 of the clamping spring.

Fig. 4 and 5 show the conductor 200 inserted into the connection terminal 100, which is pressed against the pressing surface 21 of the holding element 16 and thereby deflects or deflects the holding element 16 back in the deflection direction S, so that the clamping spring 11 is separated by its second end section 14 and thus by its clamping region from the latching flanges 22, 23 of the holding element 16, so that the conductor 200 is clamped against the busbar 10.

If the conductor 200 is removed again from the connection terminal 100, the clamping spring 11 can be moved back toward the retaining element 16 and snapped onto the retaining element 16 under actuation by the actuating element 32, as shown in fig. 6.

Description of the reference numerals

100 terminal

10 bus

11 clamping spring

12 accommodating element

13 first end section

14 second end section

15 accommodation groove

16 holding element

17 contact piece

18 side foot

19 side foot

20 wall part

21 pressing surface

22 snap flange

23 Snap flange

24 cross-sectional reduction

25 opening

26 bottom section

27 top section

28 recess

29 recess

30 control surface

31 control surface

32 operating element

33 insulating material housing

34 conductor insertion opening

35 accommodating port

36 first side

37 second side

38 manipulating finger

39 handling finger

200 conductor

B steering direction

E direction of insertion

Direction of S deflection