DE1913327A1 - Combined terminal block with clamping spring and clamping screw - Google Patents

Description

Georg Schlegel
^ Dürmentingen

Combined terminal block with clamping spring and clamping screw

The invention relates to the formation of a terminal block, which is used to connect lines or to connect the incoming with outgoing. Head a clamp spring and has a clamping screw, and wherein the incoming conductor by spring force sswischen one firmly in the Klemraenkbody inserted busbar and a bracket can be clamped, while the outgoing conductor by the clamping screw is being held "

The use of a clamping spring for securing the lead wire is known to have the advantage that the calibration Wire can be connected very quickly, which is particularly beneficial in test systems or during assembly in the workshop affects. On the other hand, there is the disadvantage with such connections that the holding effect is due to the spring force is limited, with lower contact pressure and lower safety must be expected.

The disadvantages mentioned are also associated with the known combinations of spring and screw as terminal lenient θ available, in addition, experience has shown that this is often forgotten tighten the clamp screw.

The task of Srfinduag is therefore to create a. «Terminal block of the type mentioned at the beginning, with which

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rather, the advantages of the Federkleramüng are fully exploited without their previous disadvantages having to be accepted, ie _t in which, despite the use of the quickly connectable spring clip, the holding effect of a full-fledged Kleram screw connection is guaranteed.

According to the invention, this is achieved with a terminal block with clamping spring ¹ ,, clamping screw and busbar firmly inserted into the clamping body in that the incoming and outgoing conductors are on top of each other * in the same plane, with the busbar running between the conductors and the upper conductor can be clamped via a pressure bracket and the lower one via a tension bracket through the clamping screw.

This arrangement makes it possible with simple means, the incoming conductor in the usual way first to grasp with the clamping spring, what then when clamping the outgoing conductor by the clamping screw at the same time also the conductor clamped by the spring the busbar is screwed on, scdaß both conductors by the full pressure of the screw over the associated Bracket above or below the busbar to be pressed against this.

In order to avoid that the tension bracket for the incoming conductor is tilted when it is pressed against the zylnderi'Örmigeii wire, according to the invention, one leg of the busbar is extended parallel to the clamping screw eye and runs within the tension bracket in a form-fitting manner with this. The extended limb of the busbar is used here for the tension bracket as a stop running parallel to the screw axis, so that the bracket is affected by the screw pressure

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It is not tilted from the plane perpendicular to the screw axis can be.

According to a further proposal of the invention is the busbar-side Leg dea U-shaped pressure bracket designed as a spring clip, its between the clamping screw and Head lying legs to achieve a resilient Contact pressure is domed.

This arrangement also provides an additional safeguard for the clamping screw "against self-loosening effective that the leg of the pressure bracket that is pressed into a groove of the clamping screw directly or indirectly is pressed against the screw head »as soon as the clamping screw is tightened.

Furthermore, according to the invention to secure a targeted Introduction of the head of the pressure bar and the pressure bar provided with a known cover.

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The drawing shows an embodiment of the invention, wherein in Fig. 1 and in Fig, 2 each have a terminal block is shown enlarged in vertical section.

The insulating body 1 made of insulating material is with the. Introductory openings 2 for the incoming (I) and 3 for the outgoing (II) conductor. Furthermore, a busbar k made of conductive flat material is firmly inserted into the insulating body, the width of which extends perpendicular to the plane of the drawing. The busbar has a contact part 5 running transversely to the clamping body axis A with which the conductors I and II are brought into contact (FIG. 2). Furthermore, one leg 6 of the busbar is extended parallel to the axis A and inserted with its bent end 7 into the insulating body 1. The other end 8 of the busbar runs parallel to the axis A and is inserted into a recess 9 in the insulating body 1.

The leg 7 of the busbar 4 receives a thread 7 ^{1 on the} attachment of connecting lugs | shy, sockets or similar accessories.

In a known manner, the insulating body can be placed on a support rail 10 can be detachably attached.

The clamping screw is located in the insulating body 1 as moving parts 11 with the pressure bracket 12 and the tension bracket 13 to «arranged, the latter is by a compression spring 14 in the direction the axis A is loaded, so that the leg 13 »on the contact part 5 of the busbar 4 is pressed.

The width of the two brackets 12 and 13 extends vertically », right to the Zelohen level and is dimensioned so that the pressure

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bracket 12 the screw neck 15 form-fitting »but relatively movably includes and the doubled cross piece 16 of the The tension bracket 13 can be screwed onto the shaft of the screw 11. The screw head 1? is form-fitting in a head piece 18 used, which is guided in the insulating body 1 and has a hole 19 as a screwdriver guide.

The terminal block is in Pig. 1 shown in the unused state, so no conductor is connected. The connections are now made in the following way:

First of all, pressure is exerted on the clamping screw 11 'or the head piece 18 in the direction of the arrow P (Figure 2), which causes the screw 11 with the tension bracket 13 against the Compression spring I ^ is moved in the indicated arrow direction, sodaS between the skins 5 and 13 * a gap arises, in which the incoming conductor I can be inserted. So that this introduction of the conductor quickly and purposefully can take place, is the leg 13 'of the tension bracket provided with a bend 20, which compared to the Insertion opening 2 serves as a cover, iiaoh the insertion of conductor I, the pressure in direction P is released, so that now the ladder by the power of. Compression spring clamped between parts I3 · and 5 1st and with the busbar 4 is in contact.

Zn the. Remaining space between the leg 12 "of the Druok bracket 12 and the contact part 5 of the power rail % can now be pushed in the conductor II, whereby the cover of the EinführÖffmong by the Druok bracket also ensures a safe and quick insertion of the conductor.

File 2546 (a) 009-838 / 1844 _g_

The clamping screw is now used to clamp the conductor II 11, 1? rotated so that they fit into a threaded hole of the cross piece 16 of the tension bracket screwed in the direction P, the bracket leg 12 'on the Lei.ter II and this is pressed against the contact part 5. As soon as this effect occurs, if you continue to turn the vision hood the tension bracket 13 pulled against the direction of arrow P, so that now the clamping point of the conductor I of the effect the Klemmsehraube 11 is exposed, cia over the Screw 11 exerted force fully affects both clamping points. In doing so, the depressed elastic Bracket legs 12 'in the screw connection between the shaft 11 and the tension bracket 16 is a resilient one Contact pressure generated, the sum compensation of the so-called Cold flow-related yielding of the conductors I and II is required.

An additional securing of the clamping screw 11 against Self-loosening consists in the fact that the leg 12 '' at Tighten the clamping screw 11 against the head piece 18 and this is pressed against the screw head 17.

To increase the effectiveness, you can wipe this out Head piece 18 and the Kiemmsehraubenkopf 17 a. Spring washer 21 or other "friction-increasing Mittor" inserted will.

Since the leg 6 of the busbar b runs within the walls of the tension bracket 13 and is arranged so that it cannot make any sideways evasive or tilting movements, tilting of the tension bracket when it is pressed against the conductor I is avoided even if it is unavoidable is, the conductor I outside of the effective line through the

2546 (a) 009838 / 18U ■ »« * »« «.

Compression spring 2A or »/ and the clamping screw 11 exerted Clamping force is *

The connections are loosened analogously by turning back the clamping screw 11, bsi-i «. depress the pulling bow 13. ,

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Claims (3)

company Georg Schlegel Bürmentingen Claims / 1.) Eeihsnklenirae, which has a Klerarafedep and a clamping screw for connecting or connecting fe ^ * - '' the incoming with the outgoing electrical conductor, characterized in that the incoming conductor by spring force between a firmly inserted in c.en clamping body, can be busbar and a strap clamped _r during the outgoing conductor held w by the clamping screw: lrd _B ued that the incoming conductors (I) and the outgoing conductor (II) over each other in the same Sbeue Iieg3n _f wherein the bus bar between said conductors ( 8) runs and the lower conductor CD is positively locked by the force of a compression spring (3Λ) »ur.d after tightening the clamping screw (11) - for the upper conductor (II} both conductors ψ are positively clamped. 2. Terminal block according to claim I _5, characterized in that one leg (6) of the busbar (?) Is extended parallel to the clamping screw axis and runs in a Tormschlüssig manner within the side walls of the Zis & bil & els (13). 3. Eeiheaklemme according to the preceding claims, characterized in that the stroniiichienenseiten Leg (12) of the σ-shaped pressure bracket3 (12). with the support of a spring washer (21) as a spring clip is trained. 009838/184 I * ju BATH ORIGINAL " ² " 191332 ' Reihsaklerame according δ.βη preceding claims, characterized in that sswischen screw head a form-locking connected to the screw head (17) Iaolierstück (18) (17) with or without a spring disc (21) and Druckbtigel (12) is provided, soft serves, via to move the screw (11) the tension bracket (13) against the force of the compression spring (Ik) so that it is safe to touch and, on the other hand, to give the screwdriver a safe guide « Terminal block according to the preceding claims, characterized gekennselehnet that the Zu ^ bracket (13) and the pressure bracket (12) for securing a seten introduction of the conductor with a known cover (20) _r bZT, i. (20) are provided. File 25 ^ 6 (a) 009838/184 Blank page