Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
  • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
  • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
  • G02B6/4439—Auxiliary devices
  • G02B6/4471—Terminating devices ; Cable clamps
  • G02B6/4477—Terminating devices ; Cable clamps with means for strain-relieving to interior strengths element

Definitions

• the invention relates to a strain relief device for at least one fiber optic cable.
• Fiber optic cables consist of one or more glass fibers, which are surrounded by a cable sheath for protection against damage. Between the glass fibers and the cable sheath, a fiber material is arranged, which consists for example of aramid fibers. In order to connect the individual optical fibers of the fiber optic cable with other optical fibers, the ends are either spliced or provided with a plug and / or a coupling. In the prior art, connectors and couplings are known which comprise a strain relief, so that acting on the fiber optic cable tensile forces do not hinder or destroy the connection of the individual glass fibers with those of another fiber optic cable. Splicing of glass fibers is usually done in distribution cabinets or sleeves.
• a strain relief of the fiber optic cable takes place only rudimentary in the prior art by the fiber optic cable is attached, for example by means of a cable tie to a component of the distribution cabinet or the sleeve.
• a strain relief device designed in this way is only of limited suitability to absorb tensile forces acting on the glass fiber cable.
• glass fibers that are not encased can be more easily routed into distribution devices. Nevertheless, it is desirable that tensile forces acting externally on the fiber optic cable be absorbed at a strain relief device so that the individual fibers in the distribution device remain free of force.
• a generic strain relief for fiber optic cable with a cable sheath, at least one glass fiber and between the at least one glass fiber and the cable sheath arranged fibers is known, wherein in the fiber optic cable to an end piece of the optical fiber cable jacket is deposited, wherein a Strain relief spaced from a termination or connection of the cable sheath freed at least one glass fiber is provided, comprising a base body with a clamping body and a fixing body with another clamping body, the strain relief device is formed in two pieces and the base body and the fixing body are connected to each other by means of a latch such that at least a portion of the fibers which are exposed upon weaning of the cable sheath from the at least one glass fiber are adjacent to their exit from the cable sheath between the clamping body and the further clamping body a clamp is locked, wherein the clamping body and the further clamping body have mutually complementary surfaces which are conically equipped and between which the at least a part of the fibers is clamped.
• the invention is based on the technical problem of providing a strain relief device for at least one fiber optic cable, which is simpler in construction.
• the solution of the technical problem results from the objects having the features of claim 1. Further advantageous embodiments of the invention will become apparent from the dependent claims.
• the strain relief for at least one fiber optic cable comprises a base body and at least one clamping element, wherein the base body has at least one passage opening for guiding at least one optical fiber cable extending from a front side of the base body to a rear side of the base body, wherein at the back of the base body Head part is arranged with at least one slot and at least one deflecting element is arranged on an outer surface of the base body, wherein the clamping body is detachably connected to the base body, wherein the connection is preferably a latching connection.
• the fibers between the cable sheath and glass fiber, in particular aramid fibers can be bundled, pulled through the slot and led back to the deflector and pulled back through the slot.
• the then protruding fibers can then be cut off as needed.
• the fibers between the deflector and slot are then pressed against the base body and held, so that then acts on a train on the glass fiber, the deflection as a loop coupling and the fibers tighten themselves.
• the structure is considerably simpler than in the prior art.
• the deflecting element is preferably formed on the upper side with a holding-down device.
• the number of through holes, the slots, deflectors and clamp body does not have to match.
• the number of slots is greater than that of the deflecting elements.
• the fibers of two fiber optic cables through a respective slot around the same deflection wound.
• a clamping body covers a plurality of deflecting elements.
• each slot is associated with a deflecting element and a clamping body.
• the passage opening on guides for two fiber optic cable wherein the base body is formed on the head part with two slots and on the outer surfaces with two deflecting elements, each associated with a clamping body.
• the clamping body is formed with a spring to generate or increase the pressure on the fibers.
• the clamping body is pivotally hinged to the base body.
• the base body preferably has pins which act as a pivot bearing.
• the clamping body may then have openings in order to put these on the pins.
• the pivotable clamping body is preferably latched to the base body.
• the one or more clamping body are attached to the head part, preferably locked.
• the base body and / or the clamping body is formed with at least one locking element, by means of which the strain relief device can be latched to a front panel or a housing.
• the base body and / or the clamping body are formed as one-piece or one-piece plastic injection molded parts.
• the Auße ⁇ abmessu ⁇ gen the strain relief device are designed to be compatible with a SC or LC coupling.
• FIG. 1 is an exploded view of a strain relief device in a front view
• 3a is a perspective plan view of a base body
• 3b is a side perspective view of the body
• FIG. 4a is a perspective bottom view of a clamping body
• Fig. 5a is a front perspective view of the assembled
• Fig. 5b is a rear perspective view of the assembled
• Fig. 6 is a rear perspective view of the assembled
• the strain relief device 1 comprises a base body 10 and two clamping bodies 30.
• the base body 10 comprises at the front side V a front part 11, a middle part 12 and at the rear side R a head part 13.
• the main body 10 has a passage opening 14 extending from the front part 11 extends to the head part 13 and has two guides 15 for fiber optic cable.
• the front part has two pins 16 on the upper side and two pins 17 (see FIG. 3b) on the underside, which are not recognizable in FIGS. 1 and 2.
• the head part 13 has two slots 18 laterally.
• the head part is formed with locking edges 19.
• the middle part 12 has in each case laterally a deflecting element 20 with hold-down
• the locking element 22 in the form of a locking tab.
• the clamping body 30 has two legs 31, which are connected to each other via two transverse webs 32, 33.
• the legs 31 On the front side V, the legs 31 each have an opening 34, which are matched to the pins 16, 17 of the main body 10.
• a spring 35 is arranged, which is U-shaped, wherein the two legs 36 of the spring 35 are connected to the transverse web 32.
• a cutaway head portion 37 is arranged, which has two bow-shaped elements 38 with inwardly directed locking edges 39, which serve for latching to the locking edges 19 on the head part 13 of the base body 10. By the free cut 40 of the head part 37, this has a better spring action during locking.
• the legs 31 are convex, wherein on respective inner sides of the legs 31, these have a tapered surface 43, which facilitates the pivoting movement. Accordingly, the base body 10 in the region of the pins 16, 17 concave indentations - on to the convex-shaped front of the legs 31 at a To guide pivoting movement.
• the base body 10 and in FIGS. 4a and 4b, the clamping body 30 are each shown alone.
• strain relief device 1 The operation of the strain relief device 1 will now be explained in more detail with reference to FIGS. 5 a and 5 b and FIG. 6.
• two fiber optic cables 45 are inserted through the passage opening 14, wherein from the head part 13 in each case a glass fiber 41 is continued.
• the fibers 42 (in particular aramide fibers) located between the cable sheathing and the glass fiber 41 are wound into a bundle and guided through the respective slot 18, looped around the deflecting element 20 and guided through the slot 18 back to the head part 13 (see FIG. 5b) ).
• the arrows on the fibers 42 while the winding direction is graphically illustrated. Subsequently, the protruding fibers 42 can be cut off.
• the associated clamping body is pivoted down, wherein the locking edges 39 engage the locking edges 19.
• Fig. 5b only the fibers 42 are shown for the front 45.
• the fibers of the rear fiber optic cable 45 are guided accordingly through the rear slot 18 to the other deflecting element 20.
• the locked state is shown in Fig. 6, wherein the spring 35, the fibers 42 pressed against the base body 10.
• the hold-down 21 lies between the legs 36, wherein in particular the hold-down 21 prevents a high sliding of the fibers 42.
• the strain relief device 1 can be latched instead of a coupling or an adapter in a front plate or a housing, wherein the illustrated embodiment is designed to be compatible with a SC or LC coupling.

Applications Claiming Priority (2)

Publications (1)

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• 2009
  • 2009-03-09 DE DE102009012335A patent/DE102009012335B4/de not_active Expired - Fee Related
  • 2009-12-16 MX MX2011009304A patent/MX2011009304A/es unknown
  • 2009-12-16 CN CN2009801580001A patent/CN102349016A/zh active Pending
  • 2009-12-16 US US13/255,746 patent/US20120002935A1/en not_active Abandoned
  • 2009-12-16 EP EP09801163A patent/EP2406677A1/de not_active Withdrawn
  • 2009-12-16 AU AU2009342056A patent/AU2009342056A1/en not_active Abandoned
  • 2009-12-16 KR KR1020117020279A patent/KR20110128837A/ko not_active Application Discontinuation
  • 2009-12-16 RU RU2011140841/28A patent/RU2499287C2/ru not_active IP Right Cessation
  • 2009-12-16 WO PCT/EP2009/009035 patent/WO2010102657A1/de active Application Filing
  • 2009-12-16 UA UAA201110850A patent/UA99566C2/ru unknown
• 2011
  • 2011-09-07 ZA ZA2011/06531A patent/ZA201106531B/en unknown

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