DE20300617U1 - Electrical terminal block has metal connector elements enclosed freely in insulating housing - Google Patents

Abstract

The electrical terminal block has a main body of insulating material [12] with a central cavity within which there is a freely located metal block [26] with holes at each end that receive the ends of wires. Spring contact clips [24] are pressed against the wires when clamping screws [22] are tightened.

Description

WECO Wester, Ebbinghaus GmbH & Co. KG Attorney file: 27138

63452 Hanau

German utility model

Electrical connection terminal

Description :

The present invention relates to an electrical connection terminal comprising at least one insulating housing with opposite insertion openings for the introduction of elements to be conductively connected to one another, wherein the insulating housing has side or partition walls such that at least one space is formed for receiving a respective conductive clamping body and the clamping body has a corresponding connection opening at the ends facing the insertion openings.

Such electrical connection terminals are known from the prior art. A disadvantage of the known connection terminals, however, is that the clearance and creepage distances within the insulating housing, especially in the case of several insulating housings or connection terminals lying next to one another, are very small, so that the known connection terminals can only be safely used for low voltages.

It is therefore an object of the present invention to provide an electrical connection terminal of the type mentioned at the outset, which has sufficiently large air and creepage distances within the insulating housing or to adjacent electrical connection terminals.

This task is solved by a connection terminal with the features of the

Claim 1.

Advantageous embodiments are described in the subclaims.

A connection terminal according to the invention has a clamping body which consists of a first and a second element body, the first and the second element body each having a corresponding connection opening for the introduction of elements to be connected to one another in a conductive manner and the element bodies being connected to one another via a web-shaped third element body. The third element body is designed smaller than the first and the second element body in such a way that the third element body is spaced from at least one side or partition wall of an insulating housing of the electrical connection terminal. This ensures that the clamping body no longer touches the side or partition walls of the insulating housing at at least one point, so that the air and creepage distance is significantly increased. In particular, the distance between the third element body and the respective side or partition wall is at least 0.5 mm. The distances between the respective side or partition wall and the third element body can also be the same. Such a waist of the clamping body in the area of the third element body is sufficient, for example, for 250 volts with a pollution level of 3.

In an advantageous embodiment of the invention, the first and second element bodies are formed in one piece with the third element body. The clamping body is usually made of metal or a metal alloy.

Furthermore, it is possible that the first and second element bodies are each cuboid-shaped.

In further advantageous embodiments of the invention, the insulating housing 0 consists of two housing elements which can be connected to one another, for example by means of a plug connection, or is designed as a single piece. It is possible for the connection terminal according to the invention to be part of a terminal block with

different connection points. For example, at least two separate connection terminals can be arranged within the insulating housing, which are insulated from one another by corresponding partitions. However, it is also possible for only one connection terminal according to the invention to be formed within a terminal block.

In a further advantageous embodiment of the invention, a soldering pin is formed on the first and/or second element body. A corresponding embodiment enables the connection of the connection terminal according to the invention to a base terminal.

Further details, features and advantages of the invention are explained in more detail in the embodiments described below.

Show it:

Figure 1 is a sectional view of a first embodiment of a

connecting terminal according to the invention;

Figure 2 is a partially sectioned plan view of the terminal according to

Figure 1;

Figure 3 shows a view of a clamping body of the inventive

connection terminal; and

Figure 4 is a partially sectioned plan view of an inventive

Connection terminal according to a second embodiment.

Figure 1 shows a side view of a first embodiment of an electrical connection terminal 10, consisting of a two-part insulating housing 12a, 12b with opposite insertion openings 16a, 16b for the introduction of

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elements to be connected to one another in a conductive manner (not shown). The insulating housing 12a, 12b has side walls or partition walls 14a, 14b (see Figure 2) such that at least one space is formed to accommodate a respective conductive clamping body 26. The clamping body 26 consists of metal or a metal alloy. Furthermore, it can be seen that a wire protector 24 protrudes into corresponding connection openings 28a, 28b of the clamping body 26 for the detachable fastening of the elements to be connected to one another in a conductive manner. To further fix the elements to be connected, two screws 22 are arranged in a screw opening 20a, 20b on the top of the insulating housing 12a, 12b. The connection openings 28a, 28b of the clamping body 26 face the insertion openings 16a, 16b of the insulating housing 12a, 12b.

Furthermore, it can be seen that the clamping body 26 is conductively connected to a soldering pin 18 that protrudes from the underside of the insulating housing 12a. In particular, the soldering pin 18 is soldered to the clamping body 26. In the exemplary embodiment shown, the insulating housing 12a, 12b is formed from two housing elements. However, it is also possible for the insulating housing to be formed in one piece.

Figure 2 shows the connection terminal 10 in a partially sectioned top view. It can be seen that the side or partition walls 14a, 14b of the insulating housing 12a, 12b form several spaces for accommodating a conductive clamping body 26. The clamping body 26 consists of a first and a second element body 32a, 32b, the first and second element bodies 32a, 32b each having the corresponding connection opening 28a, 28b for introducing the elements to be conductively connected to one another. Furthermore, it can be seen that the element bodies 32a, 32b are connected to one another via a web-shaped element body 34. The third element body 34 is smaller than the first and the second element body 32a, 32b, such that the third element body 34 is spaced from at least one side or partition wall 14a, 14b of the insulating housing 12a, 12b.

The distance between the third element body 34 and the respective side or partition wall 14a, 14b is at least 0.5 mm. In the exemplary embodiment shown, the distances between the respective side or partition wall 14a, 14b and the third element body 34 are always the same. Figure 2 also shows that the electrical connection terminal 10 is part of a terminal block 30 in which a plurality of separate connection terminals 10 are arranged, which are insulated from one another by corresponding partition walls 14b. In the exemplary embodiment shown, the terminal block 30 consists of a total of four separate connection terminals 10.
10

Figure 3 shows a representation of a clamping body 26 of the connection terminal 10. It can be seen that in the embodiment shown, the first and second element bodies 32a, 32b are each cuboid-shaped. In addition, the first and second element bodies 32a, 32b are formed in one piece with the third element body 34. At the end opposite the screw opening 20a, the first element body 32a has the soldering pin 18. Overall, the tapered design of the clamping body 26 can be seen from Figure 3.

Figure 4 shows a partially sectioned top view of an electrical connection terminal 10' according to a second embodiment. It can be seen that the connection terminal 10' is designed as part of a terminal block 30 with different connection points 36. Only one pole of this terminal block 30 is equipped with the electrical connection terminal 10'. It can be seen that a large number of combinations of different connection points are possible. Furthermore, it is also possible to design the electrical connection terminals 10, 10' without solder pins.

Claims (10)

1. Electrical connection terminal comprising at least one insulating housing ( 12 a, 12 b) with opposite insertion openings ( 16 a, 16 b) for the introduction of elements to be conductively connected to one another, wherein the insulating housing ( 12 a, 12 b) has side or partition walls ( 14 a, 14 b) such that at least one space is formed for receiving a respective conductive clamping body ( 26 ) and the clamping body ( 26 ) has a respective connection opening ( 28 a, 28 b) at the ends facing the insertion openings ( 16 a, 16 b), characterized in that the clamping body ( 26 ) consists of a first and a second element body ( 32 a, 32 b), wherein the first and the second element body ( 32 a, 32 b) each have the respective connection opening ( 28 a, 28 b) and the element bodies ( 32 a, 32 b) are connected to one another via a web-shaped third element body ( 34 ), wherein the third element body ( 34 ) is smaller than the first and second element bodies ( 32 a, 32 b) in such a way that the third element body ( 34 ) is spaced from at least one side or partition wall ( 14 a, 14 b) of the insulating housing ( 12 a, 12 b). 2. Connection terminal according to claim 1, characterized in that the distance between the third element body ( 34 ) and the respective side or partition wall ( 14a , 14b ) is at least 0.5 mm. 3. Connection terminal according to claim 1 or 2, characterized in that the distances between the respective side or partition wall ( 14 a, 14 b) and the third element body ( 34 ) are equal. 4. Connection terminal according to one of the preceding claims, characterized in that the insulating housing ( 12 a, 12 b) consists of two housing elements or is formed in one piece. 5. Connection terminal according to one of the preceding claims, characterized in that at least two separate connection terminals ( 10 , 10 ') are arranged within the insulating housing ( 12a , 12b ), which are insulated from one another by corresponding partitions. 6. Connection terminal according to one of the preceding claims, characterized in that the connection terminal ( 10 , 10 ') is designed as part of a terminal block ( 30 ) with different connection points ( 36 ). 7. Connection terminal according to one of the preceding claims, characterized in that a soldering pin ( 42 ) is formed on the first and/or second element body ( 32a , 32b ). 8. Connection terminal according to one of the preceding claims, characterized in that the first and second element bodies ( 32 a, 32 b) are each cuboid-shaped. 9. Connection terminal according to one of the preceding claims, characterized in that the first and second element body ( 32 a, 32 b) are formed integrally with the third element body ( 34 ). 10. Connection terminal according to one of the preceding claims, characterized in that the clamping body ( 16 ) consists of metal or a metal alloy.