DE8300916U1 - Holder for conductor connection points of cables, especially of fiber optic cables - Google Patents

Description

PATENT LAWYERS

DIPL.-ING. BUSCHHOFF

Dl PL.-I NG. HENNICKE

Dipl.- ING. VOLLBACH

KAISER HELMET RING 24

5000 KDLN 1

Registration number. File number:

Pe 433 1 Cologne, January 13, 1983

please enter

Note t Preformed Line Products Company,

660 Beta Drive, Cleveland . CMo 44143

Title χ Bracket for parent connection points of cables, Especially of fiber optic cables

The invention relates to a holder for parent connection points of cables, in particular of fiber optic cables, In which the conductors before and after making the connection can be set in an orderly manner.

The invention can be used with particular advantage in fiber optic cables and is given particular reference to such Cable described. It will be recognized, however, that the invention has broader uses and that at least know some of their characteristics are also used in other types of cables.

Fiberoptlk cable or the like. have a very large number of too a bundle of combined optical fibers. If such cables are to be split, i.e. connected to one another, the individual fibers are separated from each other, i.e. fanned out and with them the corresponding fibers of another Cables or several other cables. Here it is very difficult to close the fibers and connection points arrange or subdivide if there is no means of retaining the separated individual fibers or fibers - groups and / or after connecting individual fibers is available. After making all connections or

• ♦ # t · I

I ι. · · · (I ■

Splicing is common, the splice in a splice housing to accommodate and to protect the splice and to create a strain relief for it. It is desirable to d & o the individual fibers in the fiber splice housing are set so that they do not vibrate or move in any other way and this creates the conditions for poor transmission properties create.

The object of the invention is therefore to provide a bracket for the orderly Establishing conductor connection points, in particular in fiber optic cables in which the conductor connections are held motionless in a cable splice box.

This task is achieved with the invention by a method described in the weeentli- (I. a flat, non-metallic plate, which is placed on a | Side holder for itself essentially parallel to the plate has extending cable turns and which has openings in the vicinity of their opposite end faces, through which the cables can pass from one side of the panel to the other.

r According to a further feature of the invention, the Kabelöffnvmgen preferably have an elongated shape in the longitudinal direction of the plate and at least one narrow to a Ltfngsrand the plate extending, open

Ϊ slot. Individual fibers can be pulled laterally through these slots, so that the entire cable can gradually be pulled out or pushed in laterally out of the cable opening by simply pulling out its individual fibers through the narrow slot.

In a preferred embodiment, that of the has cable holders opposite, other side of the plate according to the invention cable bracket holder for attaching cable

bake. The cable planers can be of various types Have shapes and are formed, for example, by holes in the plate, which fastening means for fastening the cable lugs on the other side of the plate.

The holder according to the invention is optionally usable Provided optical fiber mounts, which are arranged on the other side of the plate and several optical fibers Pick up and hold at a lateral distance from each other * The fiber optic holder has a block made of elastomer with several, laterally spaced, essentially V-shaped grooves for clamping individual optical fibers. The V-shaped design of the grooves allows glass fibers of different diameters to be clamped securely in the grooves. The block has a convex outer surface in which the V-shaped grooves are formed so that a large number of individual fibers are accommodated in a given width dimension of the plate can be. In a particularly preferred embodiment are two elastomer blocks aligned with each other at a distance from each other, being parallel to the Outer circumferential surfaces of the convex blocks and a support surface of a support element is located at a distance below these surfaces.

To fasten the plate between opposing end walls of a cable splice housing, end plate holders are advantageously provided. These End plate holders can be connected to torsion bars, on which in a preferred embodiment the end plates are attached at a mutual distance from each other. The faceplate holders are preferred adjustable in relation to the plate to allow different torsion or connecting rods and cable splice housings Customize sizes and styles.

The plate, terminal blocks, brackets and cable lugs are all made of non-metallic material, with the option of one Reduce damage to the fiber optics and / or problems with light transport through the fibers to a MInJ »im ·

The holder according to the invention has the advantage that it can be manufactured economically and can be very easily handled in the field of application and on the construction site. In addition, the holder has the advantage that individual fibers _f in the lateral distance are retained sorted from one another and the cable connection can remain in this position in the parent KabelsiteißgehäuBe ·

Further features and advantages of the invention emerge from the following description and the drawings, in which a preferred embodiment of the invention is explained in more detail using an example It shows:

Fig. 1 shows a holder according to the invention in a partially exploded perspective Depiction,

Figure 2 shows that attached to a cable splice case Bracket according to the invention in plan,

3 shows the object of FIG. 2 in a side view according to line 3-3 with parts of the cable flow housing removed up and down,

Fig. 4 is a front view of the object Fig. 3 according to line 4-4 and

Fig. 5 shows the stability of one in the holder

Terminal block used according to the invention.

In Fig. 1 there is an essentially flat, rectangular shape Plate denotes whose kisses · perimeter line from each other opposite parallel end faces 12 and 14 and the opposite parallel longitudinal sides 16 and 18 is formed.

Essentially Z-shaped cable holding cones B form cable holders, with which a coiled part of a cable In essentially parallel 2 »those opposite one another Surfaces of the plate A is held. Each cable holder bracket 3 has fastening legs 20 and support legs 22 which run parallel to one another and which are supported by a web 24 are integrally connected to each other, transversely between extends the thighs. The plate or platform A has several, spaced apart, continuous Holes 28, which are arranged on their longitudinal center line next to the end edges 12 and 14. Each attachment * leg 20 of the cable holding brackets has two holes 30 which are the same distance from one another as one of the Pairs of holes 28 penetrating platform A. Expandable inserts 32 can be inserted into the holes 28, which receive screws 34 passing through holes 30 inserted through and screwed into the insert 32 to securely attach the retaining brackets B to the plate A. The consoles B are preferably complete within the outer circumference of the plate A, with the designated 28, multiple holes allow the platform A an optional attachment of the consoles B at different distances from each other. The the Cable-receiving legs 22 of the brackets B, which are laid in loops, run parallel to the longitudinal axis and to the Long sides 16 and 18 of platform A. A cable can then be wound or spooled around the consoles B, so that these the coiled part of a cable in a substantially parallel to the platform A position keep.

In addition to the corners formed by the end faces 12 and 14 and longitudinal sides 18 and 18, there are essentially four corners in the plate A oval cable receiving openings 38 provided which penetrate the plate A · The cable receiving openings 38 have an elongated in the longitudinal direction of the plate Shape, each cable receiving opening 38 through a narrow slot 40 with the outer periphery of the platform A in communication. In the preferred embodiment The slots 40 extend from each cable receiving opening 38 to the outer longitudinal edge 16, 18 of the plate A. In addition Each slot is preferably at the end of a cable receiving opening lying next to a plate front edge arranged.

Venn a fiber optic tether in a cable through one of the Cable receiving openings and connections are made between individual fibers of connected cables, it would not be possible to remove the cables from panel A [without first having made the connections separation points again. With the help of the narrow; Slots 40, however, it is possible to cut the outer plastic : remove the sheath from the cable or cut it open lengthways, to expose the individual fibers so that they in turn laterally through the associated with the Receiving opening 38 communicating slot 40 can be pulled out. Here one or several individual fibers can go through each side laterally Slot 40 can be pulled out until the entire fiber bundle of the cable is outside of the plate A. Dien is advantageous in cases where it is necessary or desirable to remove the cables from the panel decrease after some or all of the connections between the individual fibers have been made

Among other things, the plate A of the bracket in a certain position • between two end walls of a cable splice housing

■ - 7 - ■

end plate holders are used. In the preferred embodiment shown in the drawings, in which known torsion bars are provided to hold the end walls at a previously tested distance, the end plate holders consist of essentially J-shaped support brackets C. These support brackets are connected to the torsion bars and hold the end edges 12 and 14 of the plate inside at a distance from the end walls. For this purpose, suitable holes are provided in the plate A, which are designated by 46 and stood parallel to the end edges 12 and 14 in A ^v . «Ι are arranged from one another and close to one another. Further inside, at a distance from the holes 46, there are interchangeable holes 48 for attaching the support brackets C to. the plate A is provided. Suitable, expandable inserts 50 can be inserted into the holes 46 and 48, which insert fasteners 52 which penetrate elongated holes 54 in the elongated fastening legs 58 of the essentially J-shaped brackets C. The legs 58 are attached to that side of the plate A which is opposite the surface on which the brackets B for holding the cable turns are attached.

The substantially J-shaped »consoles C have hook-shaped ) Parts that are formed by retaining legs 60 and extend essentially parallel to the fastening legs 58 and are connected to these by webs 62.

By optionally!, Loosening and tightening the screws 52 you can the supporting cone opposite the long sides 16 and 18 set and on cable splice housings of various types and sizes are adjusted, in other words serving da6 the consoles C in a perpendicular to the longitudinal axis of the Plate A can be adjusted along the direction to accommodate support rods that have different distances from each other. It can also be seen that other types and / or shapes can be used by end wall brackets in order to

different types and shapes of cable enclosures san to watch. However, such modifications are used in never leave the general idea of invention

The plate A has several, relatively small holes 70, which penetrate them at greater distances from each other and form a cable strap holding device, old one or several cable lugs D can be attached to that surface of the plate A which is opposite that surface, to which the bracket brackets B for the coiled part of the cable are attached have various shapes, one of which is shown in FIG. The Kabellascfae is made of plastic and has eleventh elongated, flexible tab part 72 with several, in the longitudinal direction At a distance from one another, through holes 74 which receive a locking projection 76, on which several teeth 78 are arranged. One with the catch tab one-piece fastening loop 80 extending to the side has a hole penetrating it for receiving a screw 82, the In a hole 70 or In • in this hole arranged, expandable insert is screwed in. Depending on the wishes or requirements of a particular splitter to be produced, any Place optionally one or more flaps D to be attached · Here a fiber bundle is simply over the flap part 62, which is then put in a loop around the bundle un £ is locked in this position so that the Locking projection 76 duroh a tab hole 74 is inserted through it.

On the plate A, a carrier E is arranged, the two in Having spaced apart, aligned clamping blocks G, The clamping blocks G are preferably made of a suitable elastomer, such as natural or neoprene rubber poured. The carrier E together with its clamping blocks G can be viewed as a splice block.

■ a. '9 -

As best seen in FIG. 5, each KLesablock G has «An essentially semi-cylindrical cross-sectional formation and a convex outer surface 86 and a convex inner surface 88 which first rake in an arc over an axis 90. From the outer convex surface 86 of the clamp look G, a plurality of grooves 92, which are arranged at the same distance from one another, run inwards. Here extend the grooves 92 over a larger part of the thickness of the clamping block G so far inward that the between adjacent Grooves 92 remaining fingers 92 have a certain flexibility. The grooves 92 run essentially parallel to the axis 90 and the support element E has an outer support surface 96, the curvature of which is the curved Inner surface 88 of the terminal block corresponds.

The clamping blocks G can be on the outer surface 96 of the support element E next to their opposite end faces This is where the wing is located of the support element S at a distance below the convex circumferential surfaces 86 of the clamping blocks G and extends substantially parallel to these. The opposite Ends 102 of the support element S are gently rounded and lie essentially on the surface of a Bullet. In addition, the support element has a peripheral flange 104 which protrudes outwardly beyond the support element.

The carrier element E with the KIc arranged on it blocks G can be placed in a suitable manner on one surface of the plate A, for example with mechanical Fasteners or with adhesive. For example, a foam plastic tape with a Coating of cold pressure sensitive adhesive can be used on both sides, one side up the underside of the flange 104 and with its other side to the surface of the plate A is glued.

Fig. 1 shows the use of platelets 106, 108 on one of its surfaces is provided with a pressure-sensitive cold adhesive, so that the plate is on one Surface of the plate A can be glued, while the plate 108 on the underside of the flange 104 of the support element is attached. The opposite surface of the plate 106 is made of flexible material with many narrow brackets Plastic, while the other surface of the plate 108 has many flexible hooks made of plastic, which can interact with the plastic brackets on the plate. These tiles can be placed next to anyone Be arranged at the end of the support element a E in order to optionally fasten this on one side of the plate A «

Although in Fig. 1 two support elements £ are shown, one recognizes that in many cases only one support element could be used and that in other cases no support element at all or no clamping blocks at all-: < ke G can be used. For example, a person making the conductor connection may choose to: only cable lugs D to be used. As a result, the holder can also be viewed as a holder equipment in which all parts of plate A except

j ~ the cable lugs D and the one with the terminal blocks G

henen support elements S are available. At the installation site then the person who makes a ladder connection will choose either tabs D or support elements E. or attach both, depending on what you need or would like to have.

The inwardly tapered V-shaped grooves 92 in the clamping blocks G allow fibers of different diameters to be clamped securely in the hats. The outside The curved shape of the clamping blocks G makes it possible to produce a large number of grooves for a given width dimension the platform A to accommodate.

ν »11 ά.

The improved bracket of the invention is useful in conjunction with cable splice cases of known type. In Fig. 2 the subject of the invention is shown together with a Cable splice case H shown, which two each other having opposite torsion bars 112 on the end walls 114 are attached and hold them parallel at a distance from each other. The end walls 114 have continuous Openings through which cables 116, 118 can be inserted in a manner known per se. Furthermore, in As is known, suitable seals and clamps are provided to secure the cables to the end walls 114 or to to back up. The torsion bars 112 are supported by brackets C, with the end walls 114 extending outside the ends 12 and 14 of the plate.

The ends of the cables 116 and are passed through the holes in the end walls 114, and one or both cables can be looped around the cable support bracket B on the underside of platform A. Each cable can then pass through a cable receiving opening 38 can be pulled up. The individual fibers 116a of the Cables 116 are then connected or spliced to corresponding individual fibers 118a of the cable 118. You can see that the connection points themselves and the manner in which they are made may differ and are not the subject of the present Invention are. These connection points are generally provided with the reference numeral 120 and can through Fusion welding, gluing or mechanical connecting elements and the like.

Once the individual fibers have been bonded together, groups of fibers can be welded together be held in place by the cable tab D simply to keep it out of the area where additional fibers will be spliced.

Interconnected fibers can also be V-shaped Grooves are clamped in the clamping blocks G, the connection atelles from the curved outer surface of the support element E sure to be supported. Once all of the fibers are bonded together, the fibers are either with the Lugs D or the clamping blocks G firmly attached to the plate A so that the individual fibers neither vibrate nor can drive around.

Although only two cables are shown in FIG. 2, it is clear that other cables with the improved holder according to the invention are arranged and played with each other * Furthermore, several cable lugs D and terminal blocks G can be used if this is desired. aside from that the special steps described above for splicing can also be modified if this is under Circumstances deemed desirable or preferred by the individuals making the splice.

Flg. 3 shows a cable 116 penetrating an end wall 114 and a wound portion 130 which is wound around the winding brackets B so that it is in extends substantially parallel to plate A and completely within the outer circumference of platform A. is located. The cable 116 then runs straight through the dip plate, whereby it penetrates one of the cable receiving openings. Corresponding covers J arranged opposite have flanges 134 with aligned, through holes to accommodate Fasteners · The covers J have an essentially semi-cylindrical cross-section (Fig. 4) and are dimensioned so that they are tightly seated on the end walls 114, with the torsion bars 112 located inside them. "The flanges 134 of opposing covers J abut against one another and are secured by fastening" means interconnected in such a way that the entire holder and its individual parts sealingly inside

ti ·!

; ι ι

of the cable splice case is housed.

The plate A, the support elements E and the clamping blocks G are all made of non-metallic material, so that the Possibility of notching or other damage to a fiber optic is reduced to a minimum · The Holder according to the invention fulfills the person who makes the splice, many desires, because tabs or Klewabläcke Depending on the circumstances or wishes of the can be used by the person making the splice. Also the possibility of attaching the support element E without tools on platform A saves time in the workplace.

The invention is not limited to the illustrated and described embodiment, but there are several Changes and additions are possible without departing from the scope of the invention. For example, several Cable lugs for holding the individual conductors that have already been spliced or that have yet to be spliced together in groups be provided, which are arranged in several rows side by side. It is also possible to have more than to attach two clamping blocks to one support element each or to form the clamping blocks so that the V-shaped grooves perpendicular to a plane in a row next to one another stand.

Claims (15)

Il ■ · · ■ "4th-14th Claims x 1 «Holder for conductor connection points of cables, in particular of fiber optic cables, characterized by an essentially flat plate (A) ₉ which has cable holding devices (B) on its lower surface, with which parts (130) of the cable wound in loops in the can be held essentially parallel to the surface of the holder and the near iher ^ opposite end faces (12, 14) cable receiving openings (38) for inserting a cable (116 or 118) from one side of the plate (A) having their opposite side. 2. Holder according to claim 1, characterized in that the plate (A) has fastening devices (C) with which it can be fastened via support elements (112) between the end walls (114) of a cable splice housing (J) Oe . 3. Holder according to claim 1 or 2, characterized that the plate (A) is arranged in a cable splice housing (J), the end walls (114) of which are made of torsion bars (112) are kept at a distance from each other, supported by brackets (C) attached to the plate (A) will· 4. Holder according to one of claims 1 to 3, characterized by that the consoles (C) are adjustable perpendicular to the longitudinal sides (16, 18) of the plate (A). 5. Holder according to one of Claims 1 to 4, characterized in that that at least one of the cable receiving bend openings (38) one to one long side (16 or 18) of the peripheral edge of the plate (A) formed by the longitudinal sides (16 and 18) and the end sides (12 and 14), extending, narrow, open-edged slot (40). 6. retaining ring according to one of claims 1 to 5, characterized in that all openings (38) to the longitudinal edges the plate (A) have continuous slots (40) « 7. Holder according to one of claims 1 to 6, characterized in that that on the plate (A) cable strap holder (D) can be attached, which cable straps (72) on the one Carry the side of the plate (A) opposite the underside on which the cable retention devices (B) are arranged. 8. Holder according to one of claims 1 to 7, characterized in that the cable lashing device in
the plate (A) has several holes (70). 9 «Holder according to one of claims 1 to 8, characterized in that on the side of the plate (A) opposite the cable holders (B), individual conductor holding devices (G) are provided, with which several individual conductors (116a, 118a) of the cable are arranged and in
lateral distance from each other can be kept. 10. Holder according to one of claims 1 to 9, characterized in that the single ^ iterhalterimg (G) consists of an elastomer block, the several in the side
Has essentially V-shaped clamping grooves (92) arranged at a distance from one another for receiving the individual conductors or optical fibers (116a or 118a). 11. Holder according to one of claims «1 to 10, characterized
characterized in that the terminal block (G) has a convex has curved surface (86) »and that the clamping grooves (92) extend inwardly from this convex surface (86). 12 · exhilaration according to one of claims 1 to 11 »characterized» that find between the end faces (12 and 14) of the plate (A) two la spaced from each other Clamping blocks (G) are arranged and that between these clamping blocks (G) a curved, parallel to the Convex surfaces (86) of the blocks (G) extending support surface (96) is arranged. 13. Holder according to one of claims 1 to 12 »characterized» that on one side of the plate there are several cable laughs (72) are attached. 14 · Holder according to one of claims 1 to 13 »characterized» that the Klcaattock (G) made of elastomer essentially is semi-cylindrical and that its outer peripheral surface (86) in the longitudinal direction »parallel to its Has substantially V-shaped grooves (92) extending along the longitudinal axis. 15. Holder according to one of claims 1 to 14, characterized »that the support element (£) is rounded on opposite sides of the clamping blocks (G), has smooth end surfaces (102).