DE2421054A1 - TERMINAL BOARD - Google Patents

Description

The invention relates to a terminal block for the connection of separate sets of wires.

Terminal blocks are used to electrically connect sets of wires. Usually there are terminal blocks of an elongated block of electrical insulating material which is intended for attachment to a carrier and includes a plurality of screws spaced from one another along the block in threaded sockets are arranged with some screws electrically connected. A set of wires is thereby attached,

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concluded that one end of the same was attached to one common screw or one of a series of electrically connected screws. Around To make such a connection, the insulation must be removed from the end of the wire. If the wire is massive the stripped end can be bent into a U-shaped hook around a screw, while with a stranded end Wire a special connector in the form of an eye or gable engaged with the stripped end after which the connector is inserted under the head of the screw. The screw is removed by means of a screwdriver attracted to complete the connection. This connection process is lengthy and demanding especially a lot of time when a large number of connections have to be established and released, what is the case when trying and rewiring. There are also connecting parts known which contact elements with in Have spaced fingers that delimit slots for receiving fingers by two or more small diameter wires. Such designs are in the United States patents No. 3,012,218, 3,388,370 and 3,609,644. On the other hand, no Klenssert strips are known which have such "

Contact elements for connecting separate wire sets and make it easier to connect and disconnect individual wires in a set.

A terminal block according to the present invention ensures an economical connection of sets of solid and / or stranded electrical wires up to size AWG 10 of the USA wire gauge (3.25 mm Diameter) by simply inserting the wire into a drill hole in the 'terminal block, and then the contact elements is brought into engagement with the wire by means of conventional pliers. Furthermore, the connection with any wire can be canceled simply by engaging the contact elements with a screwdriver is resolved.

According to the present invention, a terminal strip is for electrically connecting separate sets of wires, with an elongated block of electrical Insulating material created, which is divided in the longitudinal direction into a plurality of clamps, each of which is mutually exclusive includes opposite, first and second faces. The block of the terminal strip according to the invention comprises a plurality of mutually parallel, spaced apart and for receiving

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Wires serving holes extending between the surfaces of the terminal block, and also one Variety of sockets, each one from the first Surface extending transversely to at least two of the adjacent holes. There are one or more contact elements in each socket slidably arranged and between a non-contact position in which the wire engages Fingers spaced from the bores so that the wires can be inserted therein, and one Contact position movable in which the fingers extend across the adjacent bores to the therein contained wires to grasp and connect. Each pair of adjacent holes in each clamp is tagged with one of the connecting contact elements is provided to establish a connection between the wires in all of the bores Create terminal.

The terminal strip is also provided with brackets for contouring the block, so that the second surface with spacing is arranged by the carrier so that the jaws of a pair of pliers each on the second surface, as well as on one of the Contact elements can attack, so that the contact element can be pressed against the second surface in the contact position. For each socket, the connecting part is longitudinal the first

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Surface provided with a groove that crosses the socket and as access for the tip of a leaf-shaped Tool, e.g. a screwdriver, allows the contact element in the contact position, so it can be pressed into the contactless position to establish the electrical connection between adjacent ones To interrupt wires.

Furthermore, the terminal block can include a contact element that is shaped with a screw or a plug Projection is equipped for a quick connection cycle and "is" at the end of the contact element, outside is located on the first surface of the terminal strip when the contact element is in contact division, thus also a conventional one Connection can be made with a wire.

Exemplary embodiments of the terminal strip according to the invention are described in greater detail below with reference to the drawing explained. Show it:

Fig. 1 is a perspective view of a terminal block for connecting a set of wires in a clamp;

Fig. 2 is a section along the line 2-2 in Fig. 1, in which a contact element of the terminal strip is connected to a wire by means of pliers

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is pressed on a larger scale;

3 shows a section along the line 2-2 in FIG which a contact element using a screwdriver is detached from the wire, on a larger scale i

FIG. H shows a section along the line HU in FIG. 1, on a larger scale;

5 shows a section along the line 5-5 on a larger scale;

6 shows an oblique representation of a contact element 'for the contact strip according to FIG. 1, according to a first embodiment, on a larger scale;

7 shows a representation similar to FIG. 6, but according to a second embodiment;

FIG. 8 shows a representation similar to FIG. 7, but according to a third embodiment;

FIG. 9 shows a representation similar to FIG. 7, but according to a fourth embodiment;
In Fig. 1, a terminal block 10 is shown,

which is an elongated block of an electrical Insulating material, "e.g., polypropylene, which is used in its longitudinal direction is divided into a plurality of clamps 12, three of which are shown. Each terminal 12 is

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provided with a plurality of sockets 13 for receiving of inserted conductive contact elements 14 for connecting wires 16 are formed, which in bores 18 extending parallel to one another are used.

The terminals 12 have right angles and a first surface 20 through which these Kontakteiemente IU, respectively are used, as well as a second surface 22 and an inner end surface 24. The clamps 12 are protruding Flanges 26 separated from each other to avoid sparking or inadvertent short circuits between the two accessible contact elements 14 to contain. Each clamp 12 has four holes 18 serving to accommodate wires, which are connected to the end face 24, are evenly distributed and parallel to each other in the axial direction, extend in the middle between the first 20 and the second surface 22.

Each clamp 12 also has three sockets 13 which are arranged along the bores 18 at a distance from one another are, each bushing 13 having two separate, spaced apart bore 18 under one at right angles to the axis thereof and the first surface 20 with the two bores 18 cut through

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connects. The contact elements 14 are each slidably arranged in the sockets 13 between a first contactless position and a second contact position. In the contactless position above the first surface 20, which is shown by the contact elements 14 in the middle terminal 12 according to FIG. 1, the fingers 30 of the contact element 14 engaging the wire are spaced from the two cut holes 18 so that the wires can be inserted into it. In the contact position _s which is represented by the contact elements 14 in the left terminal 12 of Fig.l, the end of the contact element 14 remote from the fingers 30 is aligned with the first surface 20, the fingers 20 crossing the adjacent bores 18 and pierce the insulation of the wires in order to create an electrical connection between the wires inside. Each bore is cut through by at least one bushing 13, a bushing 13 connecting two adjacent bores 18 in each clamp 12. As a result, the wires from two adjacent bores 18 can be connected to one another by means of one of the contact elements 14, with up to four wires 16 being able to be connected in each terminal 12, if one

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Bore 18 between the wires 16 to be connected to one another is not empty. As a variant, connections between two separate sets of wires in each terminal 12 can be made by the central contact element IU is left in the non-contact position.

The elongated block is equipped at the end with brackets 32 with feet 34 which are used for fastening, the one in the middle with a '36 groove to accommodate a Screws are provided * so that the terminal strip 10 can be fastened to a carrier. The brackets 32 hold the clamp 12 at a distance from the carrier, the first 20 and second surfaces 22 forming an angle of about 30 ° with the carrier. As a result, it is easily possible for a worker to use pliers 38 to remove one of the contact elements IU from the to bring the contactless position into the contact position by one of the jaws of the pliers against the second surface 22 and the other to be placed against the upper edge of the contact element 'IU, which is easily accessible on the first surface 20 (Fig. 2) is.

Each contact element 11 (Fig. 6) is a conductive, resilient, plate-shaped body made of metal with spaced apart fingers 30. The fingers delimit two slots UO which are used to receive wires,

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in which the wires are inserted with enough force to resiliently press fingers 30 away from each other, creating a secure electrical connection with the wire. The ends of the fingers 30 are arcuate in order to facilitate the spreading of the same for inserting the wires into the slots to. The contact elements IH are each equipped with a relief slot k2 arranged between the two inner fingers, which facilitates the spreading of the fingers 30. When a force is applied to the wires in the. Forcing slots ^ O into it, the ends of the fingers first penetrate the insulation of the wire and deform it. At the same time, the resilient fingers 30 are pressed away from each other, thereby applying continuous pressure against the wire to maintain a secure electrical connection.

From Fig. 5 it can be seen that each socket 13 of the block contains two transverse thin rods U3 which are aligned with the holes 18 crossing the socket 13, the upper edge of the rods> * 3 with the wall of the adjacent hole 18 on the side opposite to the first surface 20 is aligned. The rods ^ 3 are arranged in such a way and so thin that they fit into the slots ¹ ^ O

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of the contact elements m can be inserted into the contact position is inserted into the socket 13 without the rods 4 3 causing the fingers 30 to move. The upper Edge of the individual rods 4 3 is used to support the wire in the adjacent bore 18, which is pressed between the fingers when the contact element IU is in the contact position is moved.

The terminal block 10 also includes means for Movement of the contact element 14 from the contact position into the contactless position by means of a screwdriver 44 (FIG. 3). The contact element 14 (Fig. 6) is adjacent to its end edge remote from the fingers 30 is provided with an elongated opening 45 which is parallel to this End edge runs. When the contact element 14 is in the contact pitch, the opening 45 is with the floor a groove 46 along the first surface 2Q of the clamp 12 aligned, which groove 46 tapers downwards and crosses the socket. The tip of a screwdriver 44 can be inserted through the groove 46 and into the opening 45 and pivoted against the first surface 20 in order to pull the contact element into the non-contact position.

A specific exemplary embodiment is given below explained in more detail in which the terminal strip to connect

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of wires according to the USA-Drahtlehrβ (AWG) # 18 _by. No. IU, ie nit a diameter of 0.01 to 0 16 _$ era, is provided. Each clamp 12 is approximately 2.43 cm long between the end surfaces, 24.1 cm thick between the first 20 and second surfaces 22, and 1.8 cm wide between the flanges 26. The four bores 18 are approximately zero in diameter , 36 cm and. their centers are 0.46 cm apart. The brackets 32 supported by a mounting surface are designed such that an extension of the two surfaces 20, 22 form an angle of 30 ° with the mounting surface, with the edge of the second surface remote from the mounting surface about 2.16 cm away from it is. The contact element 14 is 0.09 cm thick and consists of tin-plated, spring-tempered cartridge brass. The fingers 30 are about 0.43 cm long and 0.15 cm wide, and the width of the slots 40 is about. 0.364 cm.

Fig. 7 shows a second embodiment of a contact element 48 for use in a terminal strip. That Contact element 48 has fingers 50, two slots 52 for receiving wire and a central relaxation slot 54 equipped. These parts are practically exactly the same as those of the contact element 14. The one and only significant one Difference is that instead of elongated

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Opening 45, the contact elements 48 are equipped with a plate-shaped projection 56 which extends perpendicularly from that edge of the contact element 48 which is remote from the fingers 50. "The contact element 48 is arranged in the socket 13 so that the projection extends over the groove 46. When the contact element 48 is in the contact position, the tip of a screwdriver can be inserted into the groove 46 between the first surface and the protrusion 56 to force the contact position 48 into the non-contact position.

In Fig. 8 is a third embodiment of a contact element 60 shown for use in terminal blocks. This Contact element 60 is. with fingers 61, two slots 62

for wires, a central relaxation slot 63 and an elongated opening 64 which is designed to receive the tip of a screwdriver. These parts of the contact element 60 correspond to those of the contact element 14. The contact element 60 has a plate-shaped projection 65 which extends at a right angle from that end of the contact element 60 which faces away from the fingers 61 and is equipped with a central threaded hole, which is used to hold a screw. The contact element 60 is in the

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Bushing 13 _s disposed so the projection 66 on the first surface 20, away from the groove · kB is that extends, while the screw 66 is directed perpendicular to the first surface of the twentieth A wire can be connected to wires connected in the bores 18 of the contact element 60 in that one end of the wire is arranged in a conventional manner under the screw 66 «

In Fig. 9, a fourth embodiment of the contact element 70 is shown for use in the terminal strip, The contact element 70 is provided with a projection 71, which the plug part of a quick connection according to the Complies with US NEMA Standards 7-15-1970. If that Contact element 70 is in the contact position, the projection 71 is arranged such that it is from the first Surface 20 of the terminal block extends forward, and engages in a receptacle of the quick connector to a Wire to connect to the wires in hole 18.

A first flat part of the contact element 70 is with fingers 72, two slots 73 for the wires, one Nittigen relaxation slot 74, as well as an elongated Equipped opening 75, which runs parallel and adjacent to the end facing away from the fingers and for receiving aligned with the tip of a screwdriver. The GE-

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The named part of the contact element 70 correspond to that of the contact element 14. The contact element 70 is also provided with an L-shaped projection which extends from the end of the flat part remote from the fingers 7 2 and one extending perpendicularly from the flat part Part 76 and one parallel to the flat part, but in the opposite direction, extending part 71 includes. The contact element 70 is arranged in a socket 13, so that the protrusion extends away from the groove 46. Thus, the protrusion for engaging the jaws is one Pliers accessible to bring the contact element 70 into the contact position. Here is part of the lead from the first surface 20 so that an electrical connection can be made with it.

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Claims (1)

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