• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The connector (C) comprises: an anchoring element (30) encompassing a bolt (20); a semi-tubular jaw (40) having an anterior end portion (41) inserted into and retained in the anchoring element (30), and a posterior end portion (42) internally provided with internal teeth (43) between which an extension of the cable jacket (CC) of an optical cable (1, 2) is inserted and retained by interference; and a tubular casing (50) encompassing the anchoring element (30) and the jaw (40). The jaw (40) comprises, in a middle region (44) defined between the anterior end portion (41) and the posterior end portion (42), at least one pair of lateral and mutually facing internal claws (45, 46) between which an extension of the fibre jacket (CF) of the optical cable (1, 2) is radially inserted and axially retained by interference.
    公开号:ES2725000A2
    申请号:ES201990068
    申请日:2018-02-09
    公开日:2019-09-18
    发明作者:Carneiro Matheus Kulcheski
    申请人:Furukawa Ind S A Produtos Eletricos；
    IPC主号:
    专利说明:

    [0001]
    [0002] Connector for fiber optic cable and clamp for fiber optic cable
    [0003]
    [0004] Field of the Invention
    [0005]
    [0006] [0001] The present invention refers to a connector for fiber optic cable and having a basic construction suitable for different cables of circular section, robust and tight enough for easy and simple application under different installation conditions, generally in the field, where the use of assembly tools is generally difficult and even impracticable.
    [0007]
    [0008] [0002] The invention also refers to a clamp for circular section fiber optic cable, to promote the retention of said optical cable to a connector.
    [0009]
    [0010] Background of the invention
    [0011]
    [0012] [0003] It is well known in the art a type of connector used to connect a single fiber optic cable (optical cable), with an outlet plug fixed to a port of an external, multi-port terminal box, installed in air mode or underground and in whose outlets plugs the optical fibers of a network are connected to which different users access through said single optical fiber optic cables.
    [0013]
    [0014] [0004] In the type of external application in question, the receptacles of the terminal box and the connectors of the individual cables must be constructed to withstand severe conditions of temperature, humidity, exposure to chemical agents and other adverse operating conditions, in general present in an external installation, exposed to the weather.
    [0015]
    [0016] [0005] Normally, the connectors are previously fixed to the end of an optical access cable, generally with the use of specific tools, to allow the optical fiber to be connected to one of the optical fibers of the network, by means of the simple Fit the connector to an outlet on a terminal box.
    [0017]
    [0018] [0006] In patent application BR 1020140164804 of the same applicant, a type of known connector is described which is formed by: a tubular internal body, which has a rear end, where one end of the optical cable is fixed, and a front end to which a connection socket is attached to an outlet of a terminal box; a tubular housing that includes and retains the internal body; an anchoring means defined by a crimping tube, to anchor the coating and the tensile elements of the optical cable to the internal body
    [0019]
    [0020] [0007] In this type of connector, the crimping tube includes an extension of the tensile elements arranged over a stretch of the internal body, to be crimped, in at least two regions axially spaced from each other and in conjunction with the facing portion of the tensile elements, towards the inside of an external circumferential recess of the internal body and to penetrate the outer covering of the optical cable, anchoring both the covering and the tensile elements to the internal body of the connector.
    [0021]
    [0022] [0008] The connector described above requires the provision of the crimping tube and, consequently, of specific tools for performing said crimping operation, making it difficult and even impossible to mount that connector to the end of an optical cable in the field.
    [0023]
    [0024] [0009] In addition to the aforementioned limitation and in relation to the requirement to have mounting tools installed in specific locations, the known connector also requires the provision of equipment to ensure the correct introduction of the bare optical fiber, which is projected from the end of the tube covering towards the inside of the internal tubular body, as well as the fitting and retention of the bare fiber optic inside the connector bushing, avoiding possible transmission continuity solutions between the optical fiber and the bushing and risks of damage in the operation of mounting the optical fiber in the connector.
    [0025]
    [0026] [00010] Another structure known and directed to a fiber optic cable connector is described in WO2013 / 129485. In this second structure, the connector also comprises a tubular internal body, which has an anterior end to which a connection socket is attached to an outlet of a terminal box and a rear end in which a configured jaw is fitted and fixed. to receive and lock the end of the coating of an optical cable of the "low frictiorí " type , which will be adapted to the connector. External termination and closure elements are usually provided around the internal body of the connector.
    [0027]
    [0028] [00011] A first aspect related to the aforementioned field connector refers to the fact that it does not provide for its adaptation to the end of the circular optical cables and provided with multiple traction cables, generally of aramid, where its project is exclusively oriented to "low friction" type cables.
    [0029]
    [0030] [00012] In these field connectors, the inner body is provided with means to direct the bare fiber optic extension, which projects from the end of the coating of the cable, for later coupling and retention inside the connector bushing, this operation being performed manually by the operator without the need for special tools. The internal body has an inspection window to allow the operator to accompany the guided displacement of the bare fiber optic through the interior of the internal body, towards the inside of the bushing, for fitting and retention in the jaw inside the rear end of the body internal.
    [0031]
    [0032] [00013] However, in that previous structure, a fiber coating defined by the acrylate coating, (protective coating of the individual optical fiber) is arranged along the inside of the inner body without any lock in relation to the latter, the only one being the one between the optical cable and the internal body, due to the blocking of the cable covering inside the jaw and the latter blocking inside the rear end of the internal body of the connector. In this structure, the set defined by the naked optical fiber and its fiber coating, in acrylate, is only guided inside the internal body, being "loose" inside the latter, even after the optical fiber Naked fit and locked inside the cap. It should be noted that in the type of "low frictiorí " cable , or the pair of traction cables is sectioned at the end of the cover, such traction cables not participating in the blocking of the optical cable to the connector.
    [0033]
    [0034] [00014] In this second connector of the prior art, no traction cable block is provided in relation to the internal body of the connector, it being evident that its project aims exclusively at the installation of cables of low frictiorí type under stress of relatively reduced traction, allowing the optical cable connector cable to be guaranteed exclusively by blocking the cable cover, without any blocking of the traction cables to the connector body.
    [0035]
    [0036] [00015] Thus, although the second structure described in WO2013 / 129485 allows the connector to be mounted at the end of a "low frictiorí " optical cable in the field, without the use of special tools, it has the drawbacks and the limitations mentioned above.
    [0037]
    [0038] Summary
    [0039]
    [0040] [00016] Considering the deficiencies and disadvantages of the prior art connectors, the invention has the generic object of providing a connector for fiber optic cables of circular cross-section, subject to different tensile conditions, to be mounted in the field, no need for special tools, to ensure the effective blocking of the cable to the connector and a secure mounting of the bare fiber optic to the connector socket.
    [0041] [00017] More specifically, the invention provides a connector and a clamp for use with optical cables of circular cross-section and of different diameters, without requiring any modification in the construction of the inner body, the bushing and the tubular housing, requiring only the dimensional adaptation of the jaw.
    [0042]
    [0043] [00018] These and other objects of the present invention are achieved from a connector for fiber optic cable, of the circular section type comprising: a cable cover, a fiber coating and an optical fiber, where the connector of the type comprises: a tubular anchoring element, which has a front end, which fixes a bushing and a rear end; a semi-tubular jaw, which has a front end portion, embedded and retained at the rear end of the anchoring element, and a rear end portion provided internally with internal teeth, between which radially fits and an extension of the coating is axially retained of the cable; a tubular housing that includes the anchoring element and the jaw and which has a front end that houses the bushing, and a rear end on which a lid is locked.
    [0044]
    [0045] [00019] According to the invention, the jaw comprising, in a median region, defined between the front and rear end portions, at least one pair of internal, lateral and mutually confronted claws, between which it is radially fitted and retained axially by interference, an extension of the fiber coating.
    [0046]
    [0047] [00020] In accordance with one aspect of the invention, the fiber cover extension, retained in at least one pair of internal claws, is defined by a "fiber -tight tight-buffer Jl" extension of an optical cable provided with a plurality of traction elements in the form of aramid traction wires, arranged longitudinally and externally to the "tight-buffer" of fiber insulation, where the extension of the cable sheathing is fitted and retained in the internal jaw teeth , is defined between an outer covering extension and an inner covering extension of said optical cable.
    [0048]
    [0049] Brief description of the drawings
    [0050]
    [0051] [00021] The invention will be described below based on the attached drawings, presented by way of example of the possible embodiments of the invention, and wherein:
    [0052]
    [0053] [00022] Figure 1 represents a detailed perspective view of the optical connector in question, illustrating a possible jaw construction, which is applied to an optical cable of circular section;
    [0054]
    [0055] [00023] Figure 2 depicts a detailed perspective view of an extension of the cable circular, with an outer covering, and of a respective jaw;
    [0056]
    [0057] [00024] Figure 2A represents a top view of the elements of Figure 2, with the terminal extension of the circular cable already engaged and retained in the jaw;
    [0058]
    [0059] [00025] Figure 3 represents a detailed perspective view of an extension of the circular cable with outer sheath and inner sheath and a respective jaw;
    [0060]
    [0061] [00026] Figure 3A represents a top view of the elements of Figure 3, with a terminal extension of the circular cable already fitted and retained in the jaw;
    [0062]
    [0063] [00027] Figure 4 represents a plan view of the optical connector mounted at the end of an optical cable of circular section and rotated 90 ° with respect to that illustrated in Figure 1;
    [0064]
    [0065] [00028] Figure 4A is a longitudinal sectional view of the connector of Figure 4, taken along line IV-IV, illustrating the connector when applied to a circular optical cable with an outer sheath, as shown in Figures 2 and 2A;
    [0066]
    [0067] [00029] Figure 4B is a longitudinal sectional view of the connector of Figure 4, taken along line IV-IV, but illustrating the connector when applied to a circular optical cable with an outer sheath and an inner sheath, as shown in figures 3 and 3A; Y
    [0068] [00030] Figures 5, 6 and 7 illustrate three different stages of the movements necessary for the operator to lock the tension wires in the jaw by using a locking ring applicable to a circular cable whose outer coating is locked on the teeth. jaw internals.
    [0069]
    [0070] Description
    [0071]
    [0072] [00031] As shown in the accompanying drawings, the connector in question is constructed in two configurations in some of its internal components, to receive and retain the terminal portion of different CO optical cables, of circular section and defined as described below. .
    [0073]
    [0074] [00032] A first optical cable 1 with a DC cable sheath defined by an outer sheath 1a, of circular section, generally in polymeric material, a plurality of tensile elements ET in the form of tensile wires FT, generally defined by Kevlar fibers, which are normally known as aramid fibers, and arranged longitudinally and externally to a CF fiber cover, in the form of a "tight-buffet" fiber insulation 1b, where the FT tensile wires are wrapped by the outer coating 1a. The CF fiber coating, in the form of a " tight-buffet " fiber insulation 1b, wraps another CF fiber coating, internal and defining a fair cover 1c, generally of acrylate, which directly wraps an optical fiber FO.
    [0075]
    [0076] [00033] A second optical cable 2 with a DC cable sheath defined by an outer sheath 2a, of circular section, generally in polymeric material, a plurality of ET tensile elements in the form of FT tensile wires, generally defined by Kevlar fibers normally known as aramid fibers and located longitudinally around an internal coating 2b, also of circular section and in the form of a "loose" fiber insulating tube, in polymeric material, a CF fiber coating in the form of a 2c fiber -tight insulation buffer , which in turn involves another internal CF fiber coating and defines a fair 2d coating, generally of acrylate, which directly wraps a FO fiber optic. In this second optical cable 2, the tensile wires FT are also arranged longitudinally and externally to the CF fiber coating in the form of a "tight-buffer" of fiber insulation 2c, more specifically externally to the internal coating 2b (loose tube).
    [0077]
    [0078] [00034] The connector in question basically comprises a plug 10, tubular, in general of plastic material, which defines a terminal piece configured in accordance with the TIA-604-3-B standard, so that it fits into an outlet (not illustrated), generally mounted and retained through a wall of a terminal box, to receive and block, simply, securely and tightly, the connector, according to the well-known arrangement of the art.
    [0079]
    [0080] [00035] Inside the plug 10 is axially mounted a bushing 20 having an anterior end 20a projected slightly outward from the plug 10 and a rear end 20b seated by an elastic means 21, generally in the form of a helical spring, within a tubular anchoring element 30, which has a leading end 31 that includes the tube 20, around which the plug 10 is fitted and locked by any known structure. The anchoring element 30 has a rear end 32 in which an anterior end portion 41 of a semi-tubular jaw 40, which has side walls 40a, a bottom wall 40b and an upper opening 40c, are extended and axially retained. along said front end portion 41. The jaw 40 has a rear end portion 42, internally provided with internal teeth 43 and between which it is radially fitted and axially retained, by interference, an extension of DC cable sheathing which is it can be defined by the outer sheath 1a of the first optical cable 1, circular and which is exemplifyingly considered as 3 mm in diameter, or by the inner sheath 2b (loose tube) of the second optical cable 2, circular and which is exemplifyingly considered as of 5mm in diameter
    [0081] [00036] The connector in question comprises a tubular housing 50, constructed of any suitable material, plastic or metallic, which includes the anchoring element 30 and the jaw 40 and having an anterior end 50a including the bushing 20 and a rear end. 50b in which a lid 60 is locked.
    [0082]
    [0083] [00037] As best shown in Figures 4A and 4B, the leading end 50a of the tubular housing 50 is configured to be mounted, indexed and axially locked, as is well known in the art, around part of the plug 10, inside of which the bushing 20 is housed, constructed in the known way to receive and retain a fiber optic extension FO in a "bare" condition, which projects from the end of the CF fiber coating of the optical cable 1, 2, which is going to be mounted on the connector.
    [0084]
    [0085] [00038] The connector further comprises a locking ring 70, for use together with the first and second optical cable 1, 2, a tubular sealing cone 80, located between the rear portion 42 of the jaw 40 and the cover 60, a device coupler 90 that takes the form of a glove 91, with a rechargeable or otherwise molded outer surface, to facilitate the manual handle. The glove 91 is rotatably mounted freely around the tubular housing 50 between the cap 60 rear end with thread 20b and an external circumferential rib 54 incorporated in the tubular housing 50. The glove 91 has an anterior portion 92 with external contour, reduced and incorporating two opposite radial pins 93, to act, as bayonet type coupling elements, for the coupling device 90.
    [0086]
    [0087] [00039] A sealing cone 80, in elastomer, guarantees the tightness in the posterior region of the connector C, presenting an internal contour of cross section corresponding to the external contour of cross section of the optical cable 1 or 2. A sealing cone 80 incorporates a small outer peripheral flange 81, which projects radially from the circular outer contour to seat axially and press against the rear end 50b of the tubular housing 50.
    [0088]
    [0089] [00040] In addition to ensuring optimum sealing of the rear region of the connector C, the mounting of the sealing cone 80, radially compressed by the cover 60, provides an additional anchoring point of the optical cable 1, 2, in the tubular housing 50 , depending on the friction generated by the pressure exerted between the elastomeric material of the sealing cone 80 and an outer covering 1a, 2a, of the optical cable 1, 2, and against the inner surface of the cover 60 itself, avoiding the use of known sealing elements defined by a heat shrink tube.
    [0090]
    [0091] [00041] Tubular housing 50 incorporates at least one outer circumferential groove 55, into which an O-ring 56, of elastomer, was placed to be pressed and elastically deformed against an opposite inner wall of an outlet of a terminal box (both not illustrated).
    [0092]
    [0093] [00042] As can be seen in Figures 4A and 4B, the tubular housing 50 incorporates, in the region of its rear end 50b, two external radial projections 57 that can be fitted in respective radial windows 67 of the cover 60, allowing the latter is axially and rotationally locked on the rear end 50b of the housing 50. This structure allows the cover 60, of elongated tubular format, to be fitted on the rear end 50b of the tubular housing 50, include the sealing cone 80 , compressing it tightly, radially, against the outer sheath 1a, 2a of the fiber optic cable 1, 2, mounted to the connector and, axially against the rear end 50b of the tubular housing 50.
    [0094]
    [0095] [00043] The connector can also be provided with a tubular protector 100, generally made of elastomer, coupled to a rear end 62 of the cover 60 and extending axially, along a certain flexible extension, over a respective section of the cable CO optic, adjacent to the connector.
    [0096]
    [0097] [00044] According to the invention, the jaw 40 comprises, in a median region 44, defined between the front and rear end portions 41, at least one pair of internal, lateral and facing claws 45, between which it is radially fitted. and axially retained, by interference, an extension of the CF fiber coating, which can be defined by a fiber -tight insulation buffer extension 1b, 2c of the first or second optical cable 1,2.
    [0098]
    [0099] [00045] According to an illustrated structure, the middle region 44 of the jaw 40 has a pair of internal and laterally facing claws 45, radially projecting into the median portion 44 of the jaw 40, to finish, each, on a cutting edge 45a contained in a plane orthogonal to the geometric axis of the jaw 40 and external and anterior to the cross section of the respective internal claw 45.
    [0100]
    [0101] [00046] In another possible structure, the jaw 40 is provided with a pair of additional internal claws 46, lateral and facing, radially projecting into the median portion 44 of the jaw 40, to end, each, on an edge. shear 46a contained in a plane orthogonal to the geometric axis of the jaw 40 and external and subsequent to the cross section of the respective additional internal claw 46.
    [0102]
    [0103] [00047] The internal claws 45, 46, of any of the pairs of internal claws 45 and of Additional internal claws 46 are arranged in the same plane orthogonal to the geometric axis of the jaw 40 and where the planes of each of said pairs of internal claws 45, 46 are axially spaced apart from each other. This arrangement allows said internal claws 45, 46, to act in pairs and, preferably, in two axially different regions of a CF fiber coating of the optical cable mounted to the connector.
    [0104]
    [0105] [00048] In the preferred and illustrated structure, the inner teeth 43 of the jaw 40 project radially inwardly, from the inner surface of the rear end portion 42 of the jaw 40, to terminate, each, in a cutting edge 43a contained in a plane orthogonal to the geometric axis of the jaw 40 and anterior to the cross section of the respective internal tooth 43.
    [0106]
    [0107] [00049] In the illustrated embodiment, with the jaw having the semi-tubular shape, its rear end portion 42 has its internal surface defined by two opposite lateral sections and by a lower section, each inner tooth 43 extends so it continues along said lateral and lower sections of the internal surface of said rear end portion 42 of the jaw 40, keeping the cutting edge 43a in a same plane orthogonal to the longitudinal axis of the jaw 40.
    [0108]
    [0109] [00050] The CF fiber cover extension embedded and retained between at least one pair of internal claws 45, 46, is defined by a fiber-insulated "tight-buffer" extension 1b, 2c of the first or second optical cable 1,2, wherein said cables are provided with plurality of tensile elements ET in the form of tensile wires FT arranged longitudinally and externally to the "tight-buffer" of fiber insulation 1b, 2c, where the extension of the DC cable sheath, embedded and retained in the inner teeth 43 of the jaw 40, it is defined between an outer covering extension 1a and an inner covering extension 2b (loose tube) of the first and second optical cable 1,2, respectively.
    [0110]
    [0111] [00051] When the first optical cable 1, of circular section and in general with a diameter of 3 mm is used, for example, the axial locking of the latter in the connector is carried out not only by nailing the cutting edges 43a of the internal teeth 43 in the outer coating 1a, as well as in the nailing of the cutting edges 45a and / or 46a of the internal claws 45, 46 in the CF fiber coating, which takes the form of a "tightbuffer" extension of fiber insulation 1b, which wraps a fair cover 1c, of fiber coating in acrylate, inside which the optical fiber FO is housed. Therefore, in the case of the first optical cable 1, the proposed structure allows a more effective axial blockage not only of the outer covering 1a due to the intense nailing suffered by the cutting edges 43a of the internal teeth 43, but also by the effective nailing of the cutting edges 45a, 46a of the internal claws 45, 46, with a confronting extension of the CF fiber cover defined by the extension of " tight-buffer " insulation of fiber 1b disposed between said internal claws 45, 46.
    [0112]
    [0113] [00052] When the second optical cable 2 is used, of circular section and in general with a diameter of 5 mm, for example, the axial locking of the latter in the connector is not carried out by its outer covering 2a, which is sectioned in the region of the rear end 42 of the jaw 40, where it sits axially against the latter. In this case, the axial blocking of the optical cable is carried out by nailing the cutting edges 43a of the internal teeth 43 in the inner covering 2b (loose tube), of smaller diameter, as well as in the nailing of the cutting edges 45a and / or 46a of the internal claws 45, 46 in the CF fiber cover, which takes the form of a fiber -tight ' insulated tight-buffer' extension 2c of the second optical cable 2, wrapping a fair cover 2d inside the which houses the optical fiber FO. Thus, in the case of the second optical cable 2, the proposed structure allows a more effective axial blockage not only of the inner cover 2b (loose tube) due to the intense nailing suffered by the sharp edges 43a of the internal teeth 43, but also for the effective nailing, with a confronting extension of the CF fiber cover defined by the extension of "tight-buffer" of fiber insulation 2c of the second optical cable, arranged between said garr internal 45, 46.
    [0114]
    [0115] [00053] In addition to the above-mentioned blockages between the CC and CF fiber cable sheaths in the inner teeth 43 and in the internal jaws 45, 46, of the jaw 40, it should be noted that in the first and second optical cables 1,2, of the tensile elements ET in the form of tensile threads FT, generally of aramid, an additional axial block is obtained, depending on a particular structure for the jaw 40 and for the provision of the aforementioned locking ring 70 previously and illustrated in Figures 2, 2A, 3, 3A, 4A, 4B, 5, 6 and 7.
    [0116]
    [0117] [00054] The locking ring 70, generally in metal alloy and previously mounted around said optical cable 1,2, fits around the jaw 40, inside the tubular housing 50, where the FT tensile wires are directed radially outwardly of the jaw 40 and extended longitudinally and compressed, radially, between the locking ring 70 and the jaw 40, in a first longitudinal direction, and between the jaw 40 and the tubular housing 50, in a second direction opposite to the first . This arrangement simply and safely promotes efficient axial locking of the tensile wires FT in the jaw 40 and, consequently, in the anchoring element 30 and in the tubular housing 50 of the connector.
    [0118] [00055] To facilitate the blocking of the tension wires FT, when the jaw 40 is applied, to the first or the second optical cable 1,2, it has a window 47 provided in the bottom wall 40b of said jaw 40, in a region defined between the internal claws 45, 46, and the internal teeth 43, where said window 47 extends, through a groove 48 provided from the bottom wall 40b and extends through the side wall 40a, to an upper edge 40d of the latter .
    [0119]
    [0120] [00056] In the locking assembly proposed by the present invention, the locking ring 70 is placed around the rear part 42 of the jaw 40, subsequently to the window 47 and the groove 48, where the rear portion 42 of the jaw 40 and the locking ring 70 are projected axially outwardly from the rear end 32 of the anchoring element 30. This arrangement allows the tension wires FT to be easily locked to the jaw 40 in field operations without the use of tools or glue, after the outer covering 1a or the inner covering 2b (loose tube) of the first and second optical cable 1,2, respectively, are fitted and locked radially in the inner teeth 43 and being the extension of "tight- fiber isolation buffer 1b, 2c of the first or second optical cable 1.2, embedded and retained, by interference, between the internal claws 45, 46. Therefore, the blocking of the tensile wires FT can be h acer after locking the optical cable in the jaw 40, before the latter engages and locks axially at the rear end 32 of the anchoring element 30.
    [0121]
    [0122] [00057] The necessary movements for the operator, to lock the FT tensile wires, are illustrated in a simplified and summarized way in Figures 5, 6 and 7. After fitting the first or second optical cable 1,2, in the jaw 40, the tension wires FT are passed outside the bottom wall 40b of the jaw 40 through the groove 48 and the window 47, to then be extended towards the rear end portion 42 of the jaw, 40, as shown in Fig. 5. The locking ring 70 moves axially around the first or second optical cable 1, 2, until it engages above the rear end portion 42 of the jaw 40, holding the tension wires FT between the locking ring 70 and jaw 40, according to what is shown in sequential figures 6 and 7. FT pull wires bend to the front end portion 41 of jaw 40, to be cut with a suitable extension and to settle on lock ring 70, remaining compressed between the latter and the tubular housing 50, that final positioning not being illustrated in Figures 4A and 4B.
    [0123]
    [0124] [00058] To facilitate the correct axial positioning of the locking ring 70, the jaw 40 loads, in its median region 44, an outer stop 49 against one side of which the rear end 32 of the anchoring element 30 sits, where the side opposite of said outer stop 49 sits an adjacent end of the locking ring 70.
    [0125]
    [0126] [00059] Once the fixing of the optical cable 1, 2, in the jaw 40 is finished, the front end portion 41 of the latter can then be fitted and locked in the rear end 32 of the anchoring element 30, with the cover fitted 1c, 2d , and with an axial extension of bare fiber optic FO projected from said adjusted cover, which is introduced inside the anchoring element 30, for its engagement and retention inside the bushing 20.
    [0127]
    [0128] [00060] To facilitate the addressing of the fitted cover 1c, 2d, the anchoring element 30 is provided, near its rear end 32, with an inspection window 35, to be aligned with the upper opening 40c of the jaw 40, when the engagement and retention is carried out at the rear end 32 of the anchoring element 30, allowing the assembly operator to visualize the addressing of the adjusted covering 1c, 2d and of the bare fiber optic fiber within the anchoring element 30 until it fits into the bushing 20, an operation that can be facilitated with the use of disposable guides, not illustrated herein, because they are not part of the invention.
    [0129]
    [0130] [00061] The anchoring element 30 is provided internally in a middle region, before the inspection window 35, of a steering cone, with the larger base facing the inspection window 35 and with the smaller base facing the bushing and which has a slightly larger inner diameter than the fitted cover 1c, 2d, and which is aligned with the geometric axis of the bushing 20.
    [0131]
    [0132] [00062] The anchoring system proposed by the present invention provides a more intense jaw of the inner teeth 43 of the jaw 40 in the outer sheath 1a or in the inner sheath 2b (loose tube) of the first and second optical cables 1, 2, respectively, and the retention, also by bite, of at least one pair of internal claws 45, 46, on a confronting extension of "tight-buffer" fiber insulation 1b, 2c of the first or second optical cable 1, 2, fiber extension that involves the fair coating 1c, 2d of said optical cables 1,2. This double retention prints greater reliability to the fixing of the first and second optical cable 1,2, to the connector, using the CC cable coating and the CF fiber coating and the axial locking of the FT tensile wires through the ring of lock 70.
    [0133]
    [0134] [00063] Although only three constructive variations have been described for the connector and for the jaw, it will be understood that changes in the form of the components involved can be made without departing from the concept of the invention defined in the context of the claims accompanying The present specification.
    权利要求:
    Claims (22)
    [1]
    1. A connector for fiber optic cable of circular section type; characterized in that it comprises a cable sheath (CC), a fiber sheath (CF), an optical fiber (FO) and tensile elements (ET) external to the fiber sheath (CF), where the connector of the type comprising:
    - a tubular anchoring element (30), with a leading end (31), which fixes a bushing (20) and a trailing end (32);
    - a jaw (40), semi-tubular, which has side walls (40a), a bottom wall (40b) and an upper opening (40c) that extend through an anterior end portion (41) of the jaw (40) , fitted and retained at the rear end (32) of the anchoring element (30), and by a rear end part (42) of the jaw (40), internally provided with internal teeth (43), between which it is radially embedded and axially retained, by interference, an extension of the cable sheath (CC);
    - a tubular housing (50) covering the anchoring element (30) and the jaw (40) and having an anterior end (50a) that covers the bushing (20), and a rear end (50b) where it is locked a cover (60), where, in said connector, the jaw (40) comprises, in a medium region (44), defined between the front (41) and rear (42) end portions, at least one pair of internal claws (45), lateral and facing, between which an extension of the fiber cover (CF) is radially embedded and axially retained, by interference.
    [2]
    2. The connector according to claim 1; characterized in that it comprises a pair of internal claws (45), lateral and facing, projected radially into the median portion (44) of the jaw (40), to end, each, on a cutting edge (45d) contained in a plane orthogonal to the geometric axis of the jaw (40) and external and anterior to the cross section of the respective internal claw (45).
    [3]
    3. The connector according to claim 2; characterized in that it comprises a pair of additional internal claws (46) lateral and facing, projected radially into the median portion (44) of the jaw (40), to end, each, on a sharp cutting edge (46a) contained in a plane orthogonal to the geometric axis of the jaw (40) and external and posterior to the cross section of the respective additional internal claw (46).
    [4]
    4. The connector according to claim 3; characterized in that the internal claws (45, 46), of any of the pairs of internal claws (45) and of additional internal claws (46) are arranged in the same plane orthogonal to the geometric axis of the jaw (40) and where the planes of each of said pairs of internal claws (45, 46) are axially separated from each other.
    [5]
    5. The connector according to any of claims 1 to 4; characterized in that the inner teeth (43) of the jaw (40) project radially inwardly, from the inner surface of the rear end portion (42) of the jaw (40), to terminate, each, in a cutting edge (43a) contained in a plane orthogonal to the geometric axis of the jaw (40) and external and anterior to the cross section of the respective internal tooth (43).
    [6]
    6. The connector according to claim 5; characterized in that the rear end portion (42) of the jaw (40) has its internal surface defined by two opposite lateral sections and by a lower section, where each internal tooth (43) extends continuously through said lateral and lower sections of the internal surface of the rear end portion (42) of the jaw (40), keeping the cutting edge (43a) in a plane orthogonal to the longitudinal axis of the jaw (40).
    [7]
    7. The connector according to claim 1 to 6; characterized in that the extension of the fiber coating (CF), embedded and retained between at least one pair of internal claws (45, 46), defined by a "fiber-tight" insulation buffer extension (1b, 2c) of a first or second optical cable (1,2) provided with a plurality of tensile elements (ET) in the form of tensile wires (FT) arranged longitudinally and externally to the fiber-tight "buffer" (1b, 2c) , where the cable cover extension (CC), is embedded and retained in the inner teeth (43) of the jaw (40), defined between an outer covering extension (1a) of the first optical cable (1) and an extension of the inner lining (2b), of the second optical cable (2).
    [8]
    8. The connector according to claim 7; characterized in that the internal covering extension (2b) of the second optical cable (2) is in the form of a "loose" fiber insulation tube.
    [9]
    9. The connector according to any of claims 7 or 8; characterized in that it comprises a locking ring (70) that fits around the jaw (40), inside the tubular housing (50), where the pulling wires (FT) are directed radially outward from the jaw ( 40) and extended longitudinally and radially compressed, between the locking ring (70) and the jaw (40), in a first longitudinal direction, and between the jaw (40) and the tubular housing (50) and the tubular housing.
    [10]
    10. The connector according to claim 9; characterized in that the traction threads (FT) are directed radially outwards of the jaw (40) through a window (46) in the bottom wall (40b) of the latter, in a defined region between the inner claws (45, 46) and the internal teeth (43), where said window (47) extends, through a groove (48) to an upper edge (40d) of one of the side walls (40a) of the jaw (40) .
    [11]
    11. The connector according to claim 10; characterized in that the locking ring (70) fits around the rear portion (42) of the jaw (40), then the window (47) and the groove (48), where the rear portion (42) of the jaw (40) and the locking ring (70), are projected axially outward from the rear end (32) of the anchoring element (30).
    [12]
    12. The connector according to claim 11; characterized in that the jaw (40) loads, in its median region (44), an outer stop (49) against one side of which the rear end (32) of the anchoring element (30) sits, where the opposite side of said outer stop (49) sits an adjacent end of the locking ring (70).
    [13]
    13. The connector according to any one of claims 1 to 12; characterized in that the anchoring element (30) is provided with an inspection window (35) to be aligned with the upper opening (40c) of the jaw (40), in the front end portion (41) of the latter, when the engagement and retention is carried out at the rear end (32) of the anchoring element (30).
    [14]
    14. The connector according to any one of claims 1 to 13; characterized in that the tubular and elongated cover (60) is fitted and locked on the rear end (50b) of the tubular housing (50), wherein said cover (60) includes a sealing cone (80), and compresses it radially, tightly, against the outer covering (1a, 2a) of the optical cable (1, 2) and axially, against the rear end (50b) of the tubular housing (50).
    [15]
    15. The connector according to claim 14; characterized in that the tubular housing (50) incorporates two external radial projections (57) while the cover (60) is provided with a pair of radial windows (67) in each of which fits and locks a respective radial projection external (57) of the tubular housing (50).
    [16]
    16. A fiber optic cable clamp, for attaching an optical cable (1, 2) of circular section, to a connector provided with an anchoring element (30), where at least one cable sheath (CC) and by at least one fiber cover (CF) that surrounds an optical fiber (FO) and tensile elements (ET), where said jaw (40) is semi-tubular and with a portion front end (41) embedded and retained at a rear end (32) of the anchoring element (30) and a rear end portion (42) provided internally with facing inner teeth (43), between which it engages and is retained by interference , the cable cover (CC); characterized in that the jaw (40) comprises, in a medium region (44), defined between the anterior (41) and posterior (42) extreme portions, at least one pair of internal claws (44), lateral and facing, between the which is radially embedded and axially retained, by interference, an extension of the fiber cover (CF).
    [17]
    17. The jaw according to claim 16; characterized in that it comprises a pair of internal claws (45), lateral and facing, project radially into the median portion (44) of the jaw (40), to terminate, each, on a cutting edge (45a) contained in a plane orthogonal to the geometric axis of the jaw (40) and external and anterior to the cross section of the respective internal claw (45).
    [18]
    18. The jaw according to claim 17; characterized in that it comprises a pair of additional internal claws (44), lateral and facing, project radially into the median portion (44) of the jaw (40), to terminate, each, on a cutting edge (46a ) contained in a plane orthogonal to the geometric axis of the jaw (40) and external and posterior to the cross section of the respective additional internal claw (46).
    [19]
    19. The jaw according to claim 18; characterized in that the internal claws (45, 46), of any of the pairs of internal claws (45) and of additional internal claws (46) are arranged in the same plane orthogonal to the geometric axis of the jaw (40) and where the planes of each of said pairs of internal claws (45, 46) are axially separated from each other.
    [20]
    20. The jaw according to any of claims 16 to 19; characterized in that the inner teeth (43) of the jaw (40) project radially inwardly, from the inner surface of the rear end portion (42) of the jaw (40), to terminate, each, in a cutting edge (43a) contained in a plane orthogonal to the geometric axis of the jaw (40) and external and anterior to the cross section of the respective internal tooth (43).
    [21]
    21. The jaw according to claim 20; characterized in that the rear end portion (42) of the jaw (40) has its internal surface defined by two opposite lateral sections and by a lower section, where each internal tooth (43) extends continuously through said lateral and lower sections of the inner surface of the rear end portion (41) of the jaw (40), keeping the cutting edge (43a) in a plane orthogonal to the longitudinal axis of the jaw (40).
    [22]
    22. The jaw according to any of claims 16 to 21; characterized in that the fiber cover extension (CF) fitted and retained between at least one pair of internal claws (45, 46) defined by a fiber insulated " tight-buffer " extension of the first or second optical cable ( 1.2) provided with a plurality of tensile elements (ET) in the form of tensile threads (FT) arranged longitudinally and externally to the " tight-buffer " fiber insulation (1b, 2c), where the cover extension of cable (CC), fits and retains the inner teeth (43) of the jaw (40), defined between an extension of the outer sheath (1a) of the first optical cable (1) and an inner sheath extension (2b) of the second optical cable (2).
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    同族专利:
    公开号 | 公开日
    CL2019002300A1|2019-12-20|
    MX2019009731A|2020-01-30|
    CO2019008790A2|2019-09-18|
    ES2725000R1|2020-02-20|
    PE20191313A1|2019-09-23|
    BR102017002948A2|2018-09-25|
    ZA201905929B|2021-02-24|
    AR111104A1|2019-06-05|
    US20180231719A1|2018-08-16|
    ES2725000B2|2020-06-19|
    US10254489B2|2019-04-09|
    WO2018148814A1|2018-08-23|
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    US20060045428A1|2004-08-24|2006-03-02|Thomas Theuerkorn|Fiber optic receptacle and plug assemblies|
    US7244066B2|2005-02-25|2007-07-17|Corning Cable Systems Llc|Fiber optic receptacle and plug assembly including alignment sleeve insert|
    US7572065B2|2007-01-24|2009-08-11|Adc Telecommunications, Inc.|Hardened fiber optic connector|
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    US8295669B2|2009-08-27|2012-10-23|3M Innovative Properties Company|Compact optical fiber splice holder device|
    US8746987B2|2010-10-28|2014-06-10|A.J. World Co., Ltd.|Field assembled optical connector|
    WO2013000102A1|2011-06-30|2013-01-03|Corning Cable Systems Co., Ltd.|Fiber optic connectors,cable assemblies and method for making the same|
    CN103502861B|2012-02-29|2016-01-20|株式会社藤仓|The joints of optical fibre|
    BR102014016480B1|2014-07-02|2020-12-29|Furukawa Electric Latam S.A|fiber optic cable connector|JP2019086572A|2017-11-02|2019-06-06|株式会社フジクラ|Optical connector, gripping member, and method of manufacturing optical connector|
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    法律状态:
    2019-09-18| BA2A| Patent application published|Ref document number: 2725000 Country of ref document: ES Kind code of ref document: A2 Effective date: 20190918 |
    2019-11-21| PC2A| Transfer of patent|Owner name: FURUKAWA ELECTRIC LATAM S.A. Effective date: 20191121 |
    2020-06-19| FG2A| Definitive protection|Ref document number: 2725000 Country of ref document: ES Kind code of ref document: B2 Effective date: 20200619 |
    优先权:
    申请号 | 申请日 | 专利标题
    BR102017002948A|BR102017002948A2|2017-02-14|2017-02-14|fiber optic cable connector and fiber optic cable clamp|
    PCT/BR2018/050029|WO2018148814A1|2017-02-14|2018-02-09|Connector for an optical fibre cable and jaw for an optical fibre cable|
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