CN211719876U

CN211719876U - Cable connection component

Info

Publication number: CN211719876U
Application number: CN201921858135.6U
Authority: CN
Inventors: 曼弗雷德·布罗德
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2018-10-31
Filing date: 2019-10-31
Publication date: 2020-10-20
Anticipated expiration: 2029-10-31
Also published as: ES1238689U; DE202019106038U1; ES1238689Y; JP3227153U

Abstract

A cable connection component in the form of a sleeve-like clamping basket (2) for electrically connecting a cable into a cable connection plug (15), having a lamella (5) arranged on the end provided for the insertion of the cable, which lamella has parallel lamella walls (8, 8') facing one another which deviate from the radial direction and which change at least their position relative to one another under the action of radial forces, wherein the lamella (5) has a first lamella section (6) at a fixed end of the lamella (5) and a second lamella section (7) at a subsequent free end of the lamella (5), wherein the second lamella section (7) has a larger inner and outer diameter relative to the first lamella section (6). According to a preferred embodiment, the width of the lamellae is greater on the outer lateral surface (10) than on the inner lateral surface (11) of the lamellae. The cable connection member allows fitting of larger cable diameters and at the same time meets increased mechanical requirements for strain relief and torsion.

Description

Cable connection component

Technical Field

The invention relates to a cable connection component for a cable connection plug in the form of a sleeve-shaped clamping basket, comprising a lamella arranged on the end provided for the insertion of a cable, said lamella having parallel lamella walls facing each other and deviating from a radial direction, said lamella walls at least changing their position relative to each other under the action of a radial force.

Background

It is known to combine such cable connection members with cable connection plugs. DE102010017265a1 or EP1710886a1 are exemplary listed for this purpose. These clamping bodies, which are designed in the form of a sleeve, are pushed together with the union nut onto the outer surface of the cable. When screwing the cable connection plug together, the lamellae are clamped onto the cable by means of a locking nut under a suitable force to ensure sufficient strain relief. In this case, the limited inner diameter of the union nut plays a decisive role, since it must be small enough to establish the required contact pressure on the cable in the installed state. Furthermore, the limiting diameter of the locking nut is not allowed to be smaller than the maximum diameter of the cable. Therefore, in the design according to the prior art, the maximum cable diameter to be assembled is limited by this condition.

SUMMERY OF THE UTILITY MODEL

The invention is therefore based on the object of providing a possibility whereby, with the same connector plug dimensions, larger cable diameters can still be reliably handled with respect to strain relief and torsion by means of the union nut and the clamping basket.

According to the utility model discloses, this purpose is realized through a cable junction component. Further advantageous embodiments are known from the dependent claims cited in the reverse direction.

According to the invention, the lamella has a first lamella section at the fixed end and a second lamella section at the subsequent free end, wherein the second lamella section has a larger inner diameter and a larger outer diameter relative to the first lamella section. In general, a limiting diameter is predetermined by the union nut, so that, when the diameter of the cable is increased, the contact pressure on the cable is reduced and therefore the simultaneously increased mechanical requirements with regard to strain relief and torsion cannot be met anymore. However, by means of the design according to the invention, the maximum diameter of the cable, which is originally predetermined by the limiting diameter of the union nut, can be increased, so that a larger cable diameter can therefore be fitted. Thus, larger cable diameters can be inserted in the clamping basket than would otherwise be the case for the same construction size. The limit for the limiting diameter of the adapter is thus increased to the maximum cable diameter and the additional air gap. In order to be able to compensate for the reduced pressing force on the cable due to the increased limiting diameter of the adapter, the lamellae clamping the basket are enlarged radially outwards. In this case, this measure is limited in diameter on the one hand by the thread of the union nut and on the other hand by mechanical failure in that the lever arm acting on the circumference of the lamella in the region of the second section is only so large that the lamella itself does not twist but rather rests on the next lamella in the rotational direction predetermined by the union nut. Nevertheless, due to the increase in the outer diameter in the second section, a sufficient pressing force can still be applied to the cable by the locking nut, which is itself limited in diameter.

The ratio of the dimensions of the first thin section and the second thin section meets the design specifications for the structural dimensions of the corresponding cable connector plug type.

With this embodiment, it is possible to connect cables of larger diameter during assembly than in the case of conventional clamping baskets, in which no sufficient contact pressure can be achieved, with the same limiting diameter of the union nut, for a substantially maximum cable thickness.

In order to reduce the high stresses in the lamellae and at the same time to further reduce the clamping diameter of the mounted clamping basket, the higher the contact pressure, the smaller the clamping diameter, so that according to a further embodiment of the invention the lamellae are provided with a chamfer at least on one side. This means that the sheet width on the outer side of the sheets is greater than on the inner side, so that the sheet walls facing one another have an angle at least on one side with the longitudinal axis of the sleeve-like clamping basket. The bevel or the lamella wall with the angle may be provided on one side or on both sides of the lamella. According to a particularly preferred embodiment, the lamella walls arranged on the side pointing in the direction of rotation are provided with an inclined surface which has said angle to the longitudinal axis of the clamping basket. By this measure, the clamping diameter is again reduced compared to a clamping diameter without a chamfer.

The sheet walls are inclined at an angle of 1 to 20 degrees, preferably 3 to 5 degrees, relative to the longitudinal axis. The angle is determined by the length and width of the lamellae and the clamping diameter formed by the free ends of the lamellae, and is advantageously selected here such that a mechanically stable residual lamella width is maintained at the free ends of the lamellae forming the clamping diameter. This means that the angle by which one or both lamella side walls are inclined, in relation to the size of the plug and the cable to be connected therewith, can be varied to such an extent that a mechanically stable lamella end remains on the free end.

Thus, by the above-described design, it is possible to provide a cable with a larger diameter for assembly and at the same time to meet increased mechanical requirements for strain relief and torsion.

Drawings

The features and feature combinations mentioned above in the description and the features and feature combinations named below in the description of the figures and/or shown in the figures individually can be used not only in the respective given combination but also in other combinations or individually. In order to carry out the invention, not all features of the claims have to be implemented, and individual features of the independent claims can also be replaced by other disclosed features or combinations of features. All features and/or advantages which are apparent from the claims, the description or the drawings, including design details, spatial arrangements and method steps, are essential to the invention both individually and in various combinations. In the drawings, the same or similar components are denoted by the same or similar reference numerals. The attached drawings show that:

FIG. 1 is an exploded view of a cable connector plug having a cable connecting member and a locking nut cooperating therewith for mounting to a cable connector plug component;

fig. 2 is a perspective view of a clamping basket according to the present invention;

FIG. 3 is a top view of the clamping basket according to FIG. 2;

FIG. 4 is an enlarged partial view of a sheet having the angle of the sidewall surface of FIG. 5A; and

FIG. 5A is a side view of the clamp basket;

FIG. 5B is a second thin section taken along line 2 of FIG. 5A;

fig. 5C is a first thin segment along line 1 in fig. 5A.

Detailed Description

Fig. 1 shows a cable connector plug with a threaded union nut 1 for connection to a cable connector plug part 15. The union nut 1 embraces a cable connection part in the form of a clamping basket 2 in order to clamp a cable located in the clamping basket by its cable-side end when screwed onto the cable connection plug part 15 in a known manner.

Fig. 2 shows a sleeve-like clamping basket 2 with a guide region 3, by means of which the clamping basket 2 is connected in the cable connection plug part 15 to other components that may be required for the cable connection plug part 15. Following the guide area 3 is a foil area 4 into which a cable, not shown, is guided. The foil area 4 has foils 5 with gaps 9 between the foils 5, an outer foil side 10 and an inner foil side 11. The foil 5 has a first foil section 6, which is arranged at the fixed end facing the guide region 3. Following the first lamella section is a second lamella region 7 which is radially enlarged and whose outer diameter and whose inner diameter are greater than the outer diameter and the inner diameter of the first lamella section 6. Each lamella has a lamella side wall 8 and an opposite lamella side wall 8', wherein the lamella side wall 8 points in the direction of rotation in which the locking nut, when screwed on, rotates the lamella 5.

In fig. 3, this direction of rotation is indicated by an arrow and shows the individual lamellae 5 which have a lamella outer side 10 with lamella side walls 8 pointing in the direction of rotation. The foil side walls 8' pointing against the direction of rotation and the foil inner side 11 are not clearly visible. In this embodiment, the lamella side walls 8 pointing in the direction of rotation are provided with an angle α, while the other lamella side walls 8' are not provided with this angle α and therefore not provided with a bevel. The lamella side walls 8' thus extend parallel to the longitudinal axis of the clamping basket 2. In the illustration according to fig. 4, the lamella side walls 8 of the lamella 5 are shown, which are arranged at an angle α to the longitudinal axis of the clamping basket 2 and thus also at an angle α to the lamella side walls 8' of the preceding lamella 5 in fig. 4. The oblique arrangement of the lamella side walls 8 is such that in the mounted state the clamping diameter can be reduced to a solid line 14 relative to the clamping diameter without bevels, as is indicated by the broken line 13. In the uninstalled state, the clear diameter of the free end 16 of the lamella 5 can be seen from the circular line 12 of the dash-dot line. In one embodiment, the angle α is 3 to 5 degrees.

Fig. 5A shows a side view of the clamping basket 2 and the view lines for fig. 5B and 5C, from which the enlarged partial view in fig. 4 also originates. Fig. 5B shows the second thin section 6 along line 2, while fig. 5C shows a view along line 1 on the first thin section. The lever arm 17 and the tangential forces 18 in the second thin section (fig. 5B) and the first thin section (fig. 5c) can be seen.

Claims

1. A cable connection component for a cable connection plug (15) in the form of a sleeve-like clamping basket (2), having a lamella (5) arranged on the end provided for the insertion of a cable, which lamella has parallel lamella walls (8, 8') facing one another, deviating from a radial direction, which under radial forces change at least their position relative to one another, characterized in that the lamella (5) has a first lamella section (6) at a fixed end of the lamella (5) and a second lamella section (7) at a subsequent free end of the lamella (5), wherein the second lamella section (7) has a larger inner and outer diameter relative to the first lamella section (6).

2. Cable connection component according to claim 1, characterized in that the foil width on the outer side (10) of the foil (5) is larger than on the inner side (11) such that the foil walls (8, 8') facing each other have an angle (α) with the longitudinal axis of the sleeve-like clamping basket (2) at least on one side of the foil (5).

3. Cable connection component according to claim 2, characterized in that the lamella wall (8) directed in the direction of rotation has the angle (a).

4. A cable connection member according to claim 2 or 3, characterized in that the angle (a) is 1 to 20 degrees.

5. Cable connection element according to claim 4, characterized in that the angle (a) is 3 to 5 degrees.

6. Cable connection component according to claim 2, characterized in that the angle (a) is determined by the length and width of the lamella (5) and the inner clamping diameter (13, 14) formed by the lamella free ends, wherein the remaining lamella width remains sufficiently mechanically stable at the lamella free end (16).