DE919654C - Two-part strain relief clamp for connecting electrical lines - Google Patents

Description

The invention relates to two-part strain relief clamps for the connection of electrical lines, especially for plugs and couplings who should be able to use cables of different strengths with the same clamping device to fix.

Although there are known different types of strain relief clamps, which, however, do not fully meet the requirements of practice.

Apart from the well-known strain relief clamps where the connection line with the help of a clamp, which on both sides with the help of screws the line presses against the connector base or against another connector part, fastened is, two-part strain relief clamps have also become known in which only one screw is required for clamping while the other end is using a U-shaped recess is provided. In the loosened state the screw is the clamp in question around the screw axis against one provided with a collar Pin pivoted and clamped when the screw is tightened. This facility has the disadvantage that the cross-section of the clamping bracket is precisely at the greatest stress point is strongly weakened by the U-shaped incision and after repeated Use strongly bends.

According to the invention, this disadvantage is intended for a two-part strain relief clamp be eliminated by the fact that, for example, on the connector base or at Protective contact plugs on the protective contact bridge attached terminal part on the one side has a U-shaped bend against which when you tighten the Screw is a hook-shaped bent screw with no cross-section reduction Part of the clamp upper part.

The invention is explained in more detail with reference to the drawing.

Figure i shows the side view, Figure 2 the top view of the strain relief clamp. The lower part i is attached to the protective contact bridge 2: the latter can also be placed directly on the lower part of the plug or on any other plug part be attached. It is also easily possible to use molded parts of the connector itself to train in a similar way. On one side of the clamp part is the leg with 'an expression 3 with the thread for the screw 4 provided. On the opposite On the side, the lower clamp part i is provided with a U-shaped bend 5, against which move when tightening the screw q. the upper clamp part 6 at 7 applies. That Upper part 6 can be swiveled out to the side when the screw is loosened, namely around the axis the screw q .. So that the upper part 6 is in its normal position during tightening the screw q. does not move, a nose serving as a stop is attached, which, however, is also readily available on the screw q. opposite side can be arranged. The terminal is in the graphic representation on hers Inner wall completely flat; it is also easily possible to use them with to provide any unevenness in the tightened state of the clamp Press lightly into the surface of the cable insulation.

The new facility ensures a flawless clamping device created that meets all practical requirements and even with frequent use Use to maintain their shape. It consists of relatively few components, which only require extremely easy installation work. In addition, the connecting line encompassed by a large clamp and clamped evenly around its circumference, without any damage to the insulation.

Claims (3)

PATENT CLAIMS: i. Two-part strain relief clamp for the connection of electrical lines, characterized in that the clamp part fastened to the lower part of the connector or to the protective contact bridge has a U-shaped bend on one side, against which a hook-shaped bent part of the hook-shaped bent part of the The upper part of the clamp. 2. Two-part strain relief clamp according to claim r; characterized, that the upper part of the clamp can be swiveled out to the side when the screw is loosened. 3. Two-piece Strain relief clamp according to Claims 1 and 2, characterized in that the upper part of the clamp can only be swung out to one side when the screw is loosened.