Note: Descriptions are shown in the official language in which they were submitted.
20.DE2_2000 15:5? VJP MUNICH - NR.6~d S.2
Proteatlc~ix of v"Llass fi.b.~xs tuw l.eleuuiuusuiiieaClurs w~.th. hollow
leads
Thp invPnt-.inn rpl~t-.p~ t-.~ a protect7.cn f_or' ~'~'l.aA~ fihPr~ .for
telecorrnnumication with hollow leads :im ~listriLution fio1~15 ut
ra~~pt-.t-.P .~rray~ i n r.ahl ~ g1 apzra4.
LJp to tore, glass fihera a.rr~ ge~nRrally fPd into glass fiber
cable bundle leads for splicing up to the commercial oplioiz~.g
cassetfies and i:rom there, s.~-P rhpn fled lurfiher via the cables'
own bundle leads into the exiting cable. Zf however more glees
fibers are fed into a bundle lead than are to be spliced
within a splice cassette, these glass fi,bera must be
correspondingly split, i.e. they have to be removed from the
bundle lead and, as the case may be, be fed withizl other
suitable protective tubes. In one such splitting, a spllLCinq
adapter to which, for e:~ample, the tubes are ir~.dividually
attached is commonly used. zr~ anothex exemplary tecar,~~lc~ue d
corresponding numb~r of tubas lead directly out of the
cassette. Tt is howevet~ sermik~le Co pxwl,sc;l. 1.116 glass fibers
which are fed out of the cassettes or out of the bundle lead
c~c~. di,cisl, ttieLxicd~xic:al imt7,u~r.ic:et~ .
Tt is also gelzerally known to route glees fibers in th~.s~.
~5 to.hP:~, ~r ~o-r.a1 1 ~:c~ ho L'Lnw 1 Psc3~, i n the distribution field.
However, this r~~.i-res vaz-ying diameters and varying lengths
~f h~1 1 nw 1 parl~ . Tn addi.l-.i.on, 1-.h~ ho.Llnw leads must be
attached on both sides of the cassettes as well as at the end
of fihp ~~hlp. Tn t-.hi~ ~~n~P, r.a~~~i-tPS comprising Claitlp
~0 grooves for holding individual hollow leads arc known. Thic
then requirPS the installer at the construction site to, for
c~camplc, group hollow lcado belonging together into bundles
and to attach these wish cable connectors zo the reapac:tiv~
appropriate caaEette. This procedure, however, entails a high
35 degree of effort during assembly, since the rloll~w l~a~lb must
first be cut to length from a Supply roll, layed and
individually attached. This is the general prior ds lt- is
currently applied in distribution fields.
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'l~he goal Of the present in'lterstiori is Lo provide a protection
for glass Fibers fox' t~~,~communicaction with which the degree
of assembly complexity in making the distribution Fields ears
be reducEd. The posed goal ie met with a protection for glass
fibers for telecommunication with hollow leads of the type
mentioned at the outset, in which multiple holloea leads axe
gathered together lengthwise to a composite elernenL dL
least their first endE, and in which the ends of the hollow
lads can be ~.ndividually cut off to Lxm 1-~c~uircd lei~gth.
The embodiments according tv trie ir~.v~mLium for the protection
of glass fibers fox telecommunir_atiotz res,.~7 fi. i n ronsiderab:Le
work for the assembles, Since c;vrtxaec:l.ivm ~lcmcmta which have
already been gather for him are provided, which, as the case
ys ciidy be, d.c-e dlbo imdivi~lually out to the required length3.
Gathering the a.ndividual hollow leads a~~~ results in a
oonsid,erabla simplification during the fixing of these
composite elementR r~inr.P rhpy pan Pxiz from a splitting point
and can than be cosily routed to the eorreoponding
~3is1-rihution points. These composite elements of aachered
i~~da.v~,~lua1 hollow leads ca,n be designed as a round bundl~ or
a flat hand. The composite or the gathering of the
indiva.dual hollow lcadN can extend o~erer the ~ntire ler~.gth
required so that a Continual composite exis'CS. The asserr~lew
25 thct~, opcr~.o the individual hollow leads at the end poinf. nr -
close to the end point of the composite, so ~tm~ elm hollow
leads are routed starting from the oper~.ing point i n.di vi c3»a'L.Ly,
Eor example, Lo different c:dsseLl.es. Suclz a composite element
carp. either be o~~ered ire endl~ss Form ox can be c,.,fi. fin a
30 particular length. However, accc~r~c3,i~l~ to the ~.nvantion,
compooito elements axe .also provided in which the i.n~i~vi~7~~a1
hollow leads are held tvgeLt~ew Uilly aL ooze point or
diecorrtinuously at mmlt.ipl.r~ poi nt-.a wi th connection pieces or
by gluJ.xy . Fit a 5iw~n distributor sleeve, it i~ thcrcfoxc
35 basically pos~si.hl,P i-.n prwcri dP a composite element system
exactly tailored to the laying requiremento. For the
assembler, a raac~y-mac~P composite element system of Zhia sort
results in a considerable savings in acACmbly time. since the
rutt~.ng t.o R~ ~P, laying and fixing of individual rmlluw loads
40 i5 elimissated.
.,
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The connection of the individual hollow leads along the
curfacc lines can for example be accomp7.~.shed by melting the
outer cover~.ng layer followed by compression. MuCUal gluing
with thermal glues or with UV-curing glues, two-component
glues or ins~.ant glues is also possible, wherein not only a
discontinuouE, but aloo a continuous compo3itc can be
produced. by Co-extruding multiple hollow leads, It is
possible even here to produce a cox'x'ccpor~da,r~,g compooite ,
l0
~,. special material combination is required in the hollow leads
Suitable for such an application. A haxd but elastic plastic
such as for example polycarbonate (PC) in the inner area of
the tLVllow lead is especially suitable for this, so that the
hollow lead does not crimp and possibly damage the glass
fibers. Tx~ the outer area, a soft, weakly adhesive layer, ~or
example made of polyurr?thane, is applied by which 'the mutual
adhesion of the hollow leads is enhanced.
The invention is now desc~;ibed in more detail by means of nine
fiig»rRS.
z5
Figure 1 shows the application of the protection according to
the invention wztha.n a cable sleeve.
Figure ~ shows a continuously adhering oompo3itc clement ~.z~
the shape of a band.
Figure 3 shows the front vzew of the composite element of
3o Figure 3.
Figur~ 4 shows a discont~.nuoue composite slam~nt with a
C:CUtIl'lCl:L1U11 ~Jll~C:fl.
35 Figure 5 shows a composite element with llollc~w leads already
cut t~ 1 ~angth .
Fi gnrp H ~hnws fi.hR o~mr~Ri.te element of Fig~.~r.P .5 i n frc7nt'.a'I
view.
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Figure 7 sh~w~ a romposite element with a connectlori piece and
hollow leads cut to length.
Figure D shows a trozztal view of the composite element of
Fig~_irP
FigvrP 9 shows a composite element of round bundle dtlape.
Figure 1 shows the use of the protection for c~ldb~ fil:~crs for
tclccommunication with hollow leads as an emhod.impnt-.. Shown
here ~.s a hood sleeve whose hood has, tl~w~vcz, been removed,
with a sealing body DK on which a caaaat-.fi.P ~1-.and KG is
mounted. Zndividudl ~s~lic:s cassettes for splices of light wave
coz~duCtora are hur~,g in a hin7ed marzzler in thi.~ r.a:~~Ptte stand
Kc~. On the back side or ~t~e c;ass~~~s stand Kc3 is rlow located
the dictribution field for the glass fibers F ~nri the bundle
leads sA, wherein ttm laLL~t ate routed from the cable
entrances KE to the i nrli vi c~ma.l :splice cassettes . The
1nc'ilvlc3ual ~'~.1a55 fibers F which are routed between the
2o indiv; ri,~a1 ~Fs1 i.r.e~ cassettes SK as well as for example the
Lumdl~ leads &A should be routed ~.n a protected manz~er in
order fio w~i~ ~lsmage. According to the invention, Lhe glass
fibers F and/or the bundle lade HA axe now provided with a
protec.~: i.on ma~3p of composite elements according Lo the
invention. zaven this glcctchcd xcprecentation makes clear that,
rp ~ afi i vP t-.o the use of lridividual hollow ledc3,s, the use of
composite elements according to the inerantior~. allows t.rP '
realization or considerable assembly ~tdvillgs. 'rhe designs of
such cornpositc elements are row described in more ~7Pt'.~i 1 by
;~o means of Lhe following fiqure5.
Figure 2 shows a band-shaped co~ttpvsi,l.c element VE1 according
to the invention, in which individual hnllc~w leads HZ CO Hn
are cvnnecl;ed l.c~ oils another over their entire length, wherein
for each one the possihility Pxiste to open Lh.e rnutuaJ.
~G1111eCt7.Gn of the hollow lead3 hl to Hn at least at the ends.
8y means of thp arrangement of the hollow lead6 ~.n a compvs~.l.~
j element v~ this sort, ~.t is po3eiblc that the attachmer~.t to at
least the roi nt-. of origin only 'Cakes place once for dll '
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indi.zri.c7.~.~.a.1 a1 ~:mPnts, and that on 'the seCOxLd end a splitting of
the individual elements in diffcrcz~t directions ie possible.
Figure 3 shows a front view onto the composite ~lgm~r~t VF1 0~
Fi g»rP '>, wi.r_h the hollow leads Hl Lo Hn. Het~e. it Leaomes
clear that this picture is concerned with a band-like
composite element V~1 in which connection betwe~~l the
individual hollow leads H1 to IIn. takco plane via lengthwise or
P~L~ngated conneCtioris v, A, necessary splitLinq ~L ~llis
composite clement takes place along the connections z~.
Figure 4 impart~ the construction of a composite plPment VE2
as a disCOtltinuously c~dl.hetwc~. ~lclnallt with hollow lead3 Hz to
Hn. Hers, two variants arc represex~,ted which nan. be used bo'Ch
in combination as well as individually. zn this way, the
mutual connection of the hollow leads H1 tn F~ln ran be
conducted at the Lirwl. ~t1~3~ ill a term~.r~al fixiz~g arcs F81. Tn
this way, the common starting poi r, r. for an attachment is
created. In the G:U.L~ZC~jJC'Jlll~.:Lll~ dl3tance gLOm this first fixing
area, which is dPi_'PY'mi earl for. examQle by a bx'anChing point, a
connection ,~i~~e VF1 is provided here in a Second fixing area
F82; with which o~nnpc:t-.i.on piece VF1 a fuxther composite ~7UJ.lil.
is created. This connection. piece VF'2 can be made for example
of a thr?rmal gJ.~.~p whi oh, under certain Conditions, can tirwl,
he displaced and then can b~ fixed by the influence of heat.
zn this case, a, sp1 i r.r_ing of the composite eleuwllL VE2 ii~,to
the individual hollow leads H1 to Hn takes place after this
onnnection piece Vr':l. so that, from here, a distribution to the
correapoadir~g part pointo can take place. If the length ha.~
'3O not already beets factory-determined, ttxe xlullow leads II1 t4 I-In.
can tow be manually cut to length.
A composite element with hollow leads H1 tn Hn ig represented
in Figure 5 wherein for exauyl~ tlm longest hollow lead length
has already been. factory-determined_ By mPan~ cat corresponding
cut-off lengths, c:UjtCSpVlld~.l~.g adaptiorr, lersgths am cut off,
once again for example in the factory. ThP individual hollow
leads Hl. to ~Ltl are r:oiuzeoted to one another in a eorsnection
area 'U"B lr~cated in fi.hP f i xi ng area FB3 of the first ends so
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chat afterwards , a broad fann~,z~g out of tt~e ~lUllUw ledd~t H1 LV
Hn of the compos~.te elem~nt ~TE3 carp take place .
Figure 6 EhoWS the composite element jlE3 acenrdirig t~ FigmrP 5
in frontal view with ihs ll~ll~w l~~aa H1 tv Hn aLranged in a
bandwiEe manner. Two variants are shown here aq r:~nn~r_tion
elements which can be dl~e~vlaL.lvcly used,. zt is possible to
coz~ncet the reepective individual hollow leads H7 t~.~ Hn r.o onP
another along surface lines wi~xi d c:~~um~aion element, for
example with a glue. But it is also laosRib~P 'ho connect the
individual hollow leads HZ l.c.~ Hm ~m ~m or l~~th sides to one
another with the help of an adl.~.eRivp Atri.p.
Figure ~ shows a simi.~.ar r.~mpn~ifis element V~4, in which the
indivic7,ua.l I~2 to Hn are held together with the help of a piece
VF2 close to the fi.r.~t-. wnc~ in 1-.hP fixing area k'ti4. This p~.eCe
uam Lc composed of plastic comp~-iaing corrcoponding groov~s or
.r.a~aa~~~ c'~r holes into which the hollow leads H1 to I~i~l c:dli Lc
zvuted and fixed. zn addition, the connection piece VF2 is
~(7 provided with attaChmen.t means 8, Por example wl~l liuoks, with
which the composite clomcnt cars be fix~d to a predetermineri.
attachment point.
Figure Li shows the embodiment of Figure 7 iii rroizt view, from
which one can see that the individual hollow leadq H'1 t-.~ Hn
are held in a band-shaped rndium.~ im openiizgs of the connection
piece VF2. In addition, the attachment means R ~f the!
Composite element vE~ c:am be seem.
~1 composite el~mcmt VE5 is shown iri Figure 9 in which the
hollow leads ~T are gat.hprRCi i n such a way that a round cross
sectional shape ~er~ull:a with am azlcompassing connection piece
VF3- Apart from that, all Rmt~nr7i.rnents shown G~iLh regard zo the
aCLa~:hrnei~.ts and the continuous as well ca discontinuous
connections can hP applied to this composite element VE5, ec
that a further description is superfluous.
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