Fiber optic connector

Abstract

The invention relates to a fiber optic connector (10) for connecting a cable (11) with a cable sheath (13), an optical fiber (12) and a cable strain relief element (14), wherein the fiber optic connector (10) has a connector housing (20) in which a plug-in element (15) connected to an optical fiber (12) is arranged, wherein a strain relief element (80) arranged on the connector housing (20) has a fastening area (110) with preformed fastening elements (122, 123) as well as a contact area (95) for fixing the cable strain relief element (14) to the connector housing (20) and a receiving area (81), wherein the material in the fastening area (110) of the strain relief element (80) is folded to form a double material thickness and has a termination surface (119).In order to further develop a generic fiber optic connector (10) in such a way that the design of the strain relief element (80) enables a space-saving construction of the connector (10) with minimal material usage while ensuring effective cable strain relief of the cable (11) to be connected, it is proposed that the installation area (95) has an installation section (98) and a wider retention section (99) with a retention surface (100, 101) which, when in contact with the end surface (119), counteracts deformation of the deformed fastening elements (124, 125).

Description

[0001] The invention relates to a fiber optic connector for connecting a fiber optic cable with a cable sheath, an optical fiber and a cable strain relief element, wherein the fiber optic connector has a connector housing in which a fiber optic plug element connected to an optical fiber is arranged, wherein a strain relief element arranged on the connector housing has a fastening area with deformable fastening elements and a contact area for fixing the cable strain relief element to the connector housing and a receiving area for receiving the connector housing, wherein the material in the fastening area of ​​the strain relief element is folded to form a double material thickness and has an end surface.

[0002] Generic fiber optic connectors are used, for example, to transmit optical signals to a complementary mating connector with a connected fiber optic cable as a signal connection between two fiber optic cables. Alternatively, the complementary mating connector can be arranged on a circuit board, thus establishing a signal connection between the cable connected to the fiber optic connector and the circuit board of a device.

[0003] A fiber optic cable, known to those skilled in the art as a breakout cable, has one or more optical fibers circumferentially surrounded by a layer of high-tensile threads, for example, made of an aramid material, which form the cable strain relief element of the fiber optic cable. To protect the individual optical fibers of the fiber optic cable against unwanted mechanical stress, a strain relief element is usually provided on the fiber optic connector, which secures the cable strain relief element arranged in the fiber optic cable to the housing of the fiber optic connector. Both separate strain relief elements and those integrated into the housing of the fiber optic connector are known from the prior art.

[0004] For very small fiber optic connectors, the challenge is to provide a secure attachment of the cable strain relief element to the fiber optic connector housing within a limited installation space with minimal strain relief element material thicknesses. In particular, strain relief element material thicknesses of less than 0.4 mm prevent the implementation of standard-compliant strain relief elements that can absorb tensile forces greater than 50 N to effectively protect the optical fibers of the fiber optic cable from unwanted mechanical stress.

[0005] DE 10 2023 002 960 B3 discloses a cable connector 10 for connecting a data transmission cable 11. The connector comprises a connector core 20 with a plurality of contact elements 60, 70 that extend through an insulating housing (19). The contact elements 60, 70 have, at their front end regions, a contact region 61, 71 for connecting to a mating connector and a connection element 62, 72 for connecting the wires 12 of the data transmission cable 11.A shield housing 80 surrounds the connector core 20 in the circumferential direction and has, at its end region facing the data transmission cable 11 to be connected, a cable shield connection region 110 with an end surface 122 and contact wings 114, 115 for electrical connection to the cable shield 16 of the data transmission cable 11, wherein the material in the cable shield connection region 110 is folded to form a double material thickness, and wherein an additional cable shield support 130 is arranged on the shield housing 80 opposite the cable shield connection region 110. To improve the strain relief effect, the cable shield support 130 has a contact section 131 and a wider retaining section 132 with blocking surfaces 133, 134, wherein the blocking surfaces 133, 134 counteract a deformation of the deformed contact wings 114, 115 when the end surface 122 of the cable shield connection area 110 is in contact.

[0006] EP 1 860 473 B1 discloses in Fig. 3 shows a generic fiber optic connector 10 for connecting a fiber optic cable. Two plug-in elements 5, which can be connected to optical fibers, are arranged in the carrier part 3 in receptacles 4 provided for this purpose. At its front end region facing the fiber optic cable to be connected, the carrier part 3 has a tubular strain relief element 6 slotted in the axial direction. To assemble the fiber optic connector 10, the plug-in elements 5 connected to the free end regions of the optical fibers of the fiber optic cable are inserted laterally into the receptacles 4 provided for this purpose in the carrier part 3, and the exposed optical fibers are inserted through the slots 8 into the interior of the strain relief element 6.The cable strain relief element, arranged between the optical fibers and the cable sheath and formed of tensile-resistant threads, rests on the corrugated outer surface of the strain relief element 6 and is secured to the strain relief element 6 by means of a crimp sleeve 7 that can be deformed. The robust design of the strain relief element, which is integrally connected to the carrier part, is advantageous in this proposal. The disadvantage is the multiple different crimp sleeves required for different cable diameters.

[0007] EP 2 764 387 B1 shows a strain relief element for a fiber optic connector for connecting a fiber optic cable as a deformable crimp sleeve 4 made of plastic. Advantageously, this proposal simultaneously secures the cable strain relief element 7 and the cable sheath 6 using different crimp sleeves 3, 4 in a single work step. The number of parts and the required installation space are disadvantageous.

[0008] JP 2004 055 331 A discloses a cable connector for connecting a coaxial cable 50 to an insulating housing 80 that is penetrated in the longitudinal direction by a contact 70 for connecting the coaxial cable inner conductor 51. A shielding housing 2, at the end region facing the coaxial cable to be connected, has two contact wings arranged for contacting the coaxial cable shield 53, and surrounds the insulating housing 80 in the circumferential direction. Advantageously, the material in the region of the contact wings is folded by 180°, thereby doubling the material thickness and increasing the stability of the contact wings. Depending on the material thickness of the shielding housing used and the external loads on the coaxial cable connected to the connector, further measures / components are necessary to ensure stable cable strain relief.

[0009] The object of the present invention is therefore to further develop a generic fiber optic connector in such a way that the design of the strain relief element enables a space-saving construction of the fiber optic connector with minimal use of material while ensuring effective cable strain relief of the fiber optic cable to be connected.

[0010] This object is achieved according to the invention in a generic fiber optic connector with the characterizing features of claim 1.

[0011] In one embodiment according to the invention, the folding surfaces facing each other in the fastening area of ​​the strain relief element are connected to each other after folding. This enables a stable and robust design of the fastening area despite the low material thickness of the strain relief element.

[0012] The connection of the folded surfaces facing each other after folding in the cable shield connection area can be achieved, for example, by a method known to those skilled in the art, such as a clinch connection. Exemplary designs for clinch connections are disclosed in DE 10 2016 100 081 B4.

[0013] In alternative embodiments, the connection of the folding surfaces facing each other after folding in the fastening area of ​​the strain relief element can be carried out by other methods familiar to the person skilled in the art, for example by riveting or welding.

[0014] In a further embodiment of the invention, the strain relief element is constructed in one piece in order to achieve maximum mechanical stability.

[0015] In a further embodiment of the invention, it is particularly advantageous if additional engagement elements are arranged in the fastening area of ​​the strain relief element, which, after the fastening elements have been deformed, can penetrate radially into the cable sheath of the fiber optic cable to be connected or clamp it. This enhances the effect of the strain relief.

[0016] For example, the engagement elements can be designed as knobs or notches.

[0017] The arrangement of a contact area opposite the folded fastening area in an embodiment according to the invention enables an improved fixing of the cable strain relief element to the strain relief element by means of additional contact surfaces.

[0018] It proves particularly advantageous if the end regions of the folded fastening area extending transversely to the X-direction form deformable fastening elements that, after their deformation, surround the cable strain relief element in the circumferential direction. This enables secure fastening of the cable strain relief element in the circumferential direction of the fiber optic cable.

[0019] In an advantageous embodiment, the fastening elements are pre-bent prior to forming, forming an opening area for accommodating the fiber optic cable. This simplifies the design of a suitable crimping tool, with the V-shaped opening area advantageously serving as an insertion funnel for inserting the fiber optic cable to be connected, with different outer diameters, into the fastening area of ​​the strain relief element.

[0020] After the fastening elements have been deformed by means of a suitable crimping tool for fixing the cable strain relief element to the strain relief element, it proves to be particularly advantageous in an embodiment according to the invention if the contact area is enclosed in the circumferential direction by the deformed fastening elements in the circumferential direction.

[0021] In a further embodiment of the invention, an additional support element is provided, extending radially between the cable sheath and the cable strain relief element folded back over the cable sheath. In this case, the additional support element forms a stop to limit the deformation of the fastening elements and protects the optical fibers penetrating the cable sheath from undesirable mechanical stress caused by the deformation of the fastening elements.

[0022] It is advantageous to design the additional support element as a metal tube. Alternatively, with appropriate dimensions, a plastic material, such as ABS, can be used.

[0023] To protect against moisture and dust, it is advantageous if a cable grommet surrounds the connector housing with the connected fiber optic cable at least partially in the circumferential direction.

[0024] The cable grommet, which at least partially surrounds the connector housing and the connected fiber optic cable in the circumferential direction, can be provided as a separate component or alternatively as an overmolding.

[0025] In one embodiment according to the invention, the connector housing comprises a connector receptacle and a connector cover. Sliding the receiving area of ​​the strain relief element, which is designed as a form-fit, over the connector housing in the axial direction results in a detachable connection between the connector receptacle and the connector cover.

[0026] In an alternative embodiment, the connector receptacle and the connector cover can be connected in one piece via a film hinge.

[0027] The following description of advantageous embodiments of the invention serves to explain it in more detail in conjunction with the drawing. They show: Fig. 1: a perspective view of a fiber optic connector according to the invention in a first advantageous embodiment; Fig. 2: a perspective view of the fiber optic connector from Fig. 1 in the form of an exploded view; Fig. 3: a perspective view of the connector holder from Fig. 2; Fig. 4: another perspective view of the connector holder from Fig. 3; Fig. 5: a perspective view of the connector cover from Fig. 2; Fig. 6: an enlarged view of detail X from Fig. 5; Fig. 7: another perspective view of the connector cover from Fig. 5; Fig. 8: a perspective view of the strain relief element from Fig. 2 with unfolded attachment area; Fig. 9: an enlarged view of detail Y from Fig. 8; Fig. 10: another perspective view of the strain relief element from Fig. 8 with unfolded attachment area; Fig. 11: a perspective view of the strain relief element from Fig. 2 with folded fastening area; Fig. 12: an enlarged view of detail R from Fig. 11; Fig. 13: another perspective view of the strain relief element from Fig. 11 with folded fastening area; Fig. 14: a perspective view of the strain relief element from Fig. 2 with pre-formed fasteners; Fig. 15: an enlarged view of detail Z from Fig. 14; Fig. 16: a rear view of the strain relief element from Fig. 14; Fig. 17: a perspective view of the support element Fig. 18: a perspective view of the connector housing with an inserted fiber optic cable in the manner of an exploded view; Fig. 19: a perspective view of the connector housing with an inserted fiber optic cable and with the strain relief element in the manner of an exploded view; Fig. 20: another perspective view of the fiber optic connector from Fig. 2; Fig. 21: a perspective view of the connector from Fig. 20 with deformed fasteners; Fig. 22: an enlarged view of detail W from Fig. 21; Fig. 23: another perspective view of the fiber optic connector from Fig. 21; Fig. 24: an enlarged view of detail S from Fig. 23;

[0028] In the Fig. 1 to 24, an advantageous embodiment of a fiber optic connector according to the invention is shown schematically and is designated overall by the reference numeral 10. According to the Fig. 1 and Fig. 2, the fiber optic connector 10 for connecting a fiber optic cable 11 comprises a connector housing 20, which is partially surrounded circumferentially by a strain relief element 80. The connector housing 20 consists of a connector receptacle 30 and a connector cover 50, which can be detachably connected. Within the connector housing 20 are two plug elements 15 connected to the exposed end regions of the optical fibers 12, which are embodied, for example, as SC connectors. Such SC connectors are known to those skilled in the art and need not be explained in detail here.

[0029] The fiber optic cable 11, familiar to those skilled in the art, has a cable sheath 13, through which, in the exemplary embodiment, two optical fibers 12 pass. A layer of high-tensile threads circumferentially surrounds the two optical fibers 12 as a cable strain relief element 14. The cable strain relief element 14, arranged radially between the optical fibers 12 and the cable sheath 13, protrudes axially from the cable sheath 13 at the end region facing the plug-in elements 15 and is then folded back 180° over the cable sheath 13.

[0030] The Fig. 3 and Fig. 4 show the connector receptacle 30 as a component of the connector housing 20. The connector receptacle 30 extends longitudinally as a U-shaped profile between the end face 31 and the rear wall 32 and is laterally delimited by the side walls 33, 34. In the vertical direction, the connector receptacle 30 extends between the contact surface 36 and the cover surface 35. A rib 37 rises from the cover surface 35 and the side walls 33, 34, the stop surface 38 of which serves as a mechanical stop for the corresponding contact surface 82 of the strain relief element 80.

[0031] In the interior space 42 of the connector receptacle 30, a separating rib 41 is provided centrally to the side walls 33, 34, which vertically terminates flush with the contact surface 36. In the longitudinal direction, the separating rib 41 terminates in the end face 31. At its end region facing the rear wall 32, the separating rib terminates with the rear surface 49, forming a free space to the rear wall 32. This free space serves to store the end regions of the optical fibers 12 exposed by the cable sheath 13. This is described in Fig. 18 is particularly clearly shown. The rear wall 32 also has a semicircular recess 39 for the positive reception of the cable sheath 13 with the folded-back cable strain relief element 14. Due to the space required by the plug elements 15 connected to the optical fibers 12, the side walls 33, 34 are equipped with recesses 43, 44. The guide grooves 45 serve to positively receive the corresponding guide surfaces of the plug elements 15. At the front end region of the front surface 31, two recesses 46, 47 and a shoulder 40 are provided to enable collision-free reception of the plug elements 15 in the connector receptacle 30.

[0032] Starting from the contact surface 36 of the separating rib 41, two rectangular guide openings 48 extend toward the cover surface 35 for the positive reception of complementary guide blocks 68 of the connector cover 50. Inserting the aforementioned guide blocks 68 into the provided guide openings 48 aligns and guides the connector receptacle 30 relative to the connector cover 50 in the horizontal direction. Additional mechanical coding can be provided for clear assembly. This can be achieved, for example, by different dimensions of the two guide blocks 68 and the guide openings 48.

[0033] The Fig. 5 to 7 disclose the connector cover 50 with a U-shaped profile that extends between the end face 51 and the rear wall 52 and is delimited by the side walls 53, 54. In the vertical direction, the connector cover 50 is delimited by the support surface 56 and the cover surface 55. A rib 57 rises from the cover surface 55 and the side walls 53, 54 in correspondence with the connector receptacle 30. The stop surface 58 of the rib serves as a mechanical stop for the corresponding contact surface 82 of the strain relief element 80. For this purpose, the stop surfaces 38, 58 are aligned flat with one another.

[0034] A recess 70 extends from the cover surface 55 toward the support surface 56, into which the locking element 91 engages during assembly with the strain relief element 80 and, by engaging the contact edge 94 against the corresponding stop surface 75, secures the position of the strain relief element 80 in the longitudinal direction relative to the connector housing 20. The aforementioned recess 70 has two contact ramps 71, 73 with end surfaces 72, 74. An insertion bevel 76 is provided for secure engagement of the locking element 91 in the recess 70.

[0035] In the interior space 62 of the connector cover 50, a separating rib 61 is provided centrally to the side walls 53, 54, which is flush with the contact surface 56 in the vertical direction. In the longitudinal direction, the separating rib 61 opens into the end face 51. At its end region facing the rear wall 52, the separating rib 51 terminates with the rear surface 69, forming a free space from the rear wall 52. This free space serves to store the end regions of the optical fibers 12 exposed by the cable sheath 13. The rear wall 52 also has a semicircular recess 59 for the positive reception of the cable sheath 13 with the folded-back cable strain relief element 14. Due to the space required by the plug-in elements 15 connected to the optical fibers 12, the side walls 53, 54 are equipped with recesses 63, 64. The guide grooves 65 serve to positively accommodate the corresponding guide surfaces of the plug-in elements 15.At the front end region of the end face 51, two recesses 66, 67 are provided, which form a shoulder 60 in order to enable a collision-free reception of the plug elements 15 in the connector cover 50.

[0036] The connector receptacle 30 and the connector cover 50 can be designed as injection-molded parts and manufactured, for example, from ABS.

[0037] The Fig. 8 to 16 describe the structure of the strain relief element 80, with a receiving area 81, a contact area 95 and a fastening area 110. According to the Fig. 8, the receiving area 81 extends as a rectangular hollow profile between the contact area 82 and the end face 83, delimited by the side walls 84, 85, 86, 87 with a longitudinally continuous free space 89 for the positive reception of the connector housing 20. The mechanical connection of the side walls 84, 85, 86, 87 is achieved by closure-like connections 88, which are known to those skilled in the art. The side wall 84 has a breakthrough opening 90 for the arrangement of a locking element 91. The locking element 91 is connected to the side wall 84 via a connection area 92 and opens via a bent section 93, which projects into the free space 89, into the contact edge 94, which secures the position of the strain relief element 80 relative to the connector housing 20 by contacting the stop surface 75 provided for this purpose on the connector cover 50.

[0038] According to the Fig. 10, a contact area 95 adjoins the side wall 86 in the direction of the fiber optic cable 11 to be connected, which contact area is connected to the side wall 86 via a transition section 96. The contact area 95 comprises a contact element 97, a contact section 98, and a wider retaining section 99 with the retaining surfaces 100, 101. The contact element 97 also has a greater width than the contact section 98 and is provided with the blocking surfaces 102, 103.

[0039] On the side opposite the contact area 95, a fastening area 110 is connected to the side wall 87 in the direction of the fiber optic cable 11 to be connected via a transition area 105, which Fig. 10 is shown in the unfolded state. The fastening area 110 has, on its side facing the contact area 95, the inner folding surfaces 112, 112', which are divided by the inner folding line 111. On its side facing away from the contact area 95, the outer folding surfaces 113, 113' are located, divided by the outer folding line 109. In the horizontal direction, the unfolded fastening elements 116, 116' and 117, 117' are located. Two engagement elements 114, 115 protrude from the inner folding surface 113 in the direction of the side wall 87, which can be realized by means of notches.

[0040] The Fig. 11 to 13 disclose the strain relief element 80 with a fastening area 110 folded over the fold line 111, forming the end surface 119 and the contact surface 120, so that the previously flat inner folding surfaces 112, 112' lie facing each other parallel to each other. This is shown in the Fig. 12. A non-detachable mechanical connection 118 between the folded surfaces 112, 112' of the folded fastening region 110 prevents undesired widening of the mutually facing inner and outer folding surfaces 112, 112', 113, 113' due to a springback effect during folding. This can be achieved, for example, by a clinch connection known to those skilled in the art, which is illustrated in the exemplary embodiment. Depending on the size of the fastening region 110, several clinch connections can also be distributed across the fastening region 110.

[0041] According to the Fig. 14 to 16, the folded fastening area 110 is pre-bent by means of a suitable bending tool to form an opening angle A between the pre-bent fastening elements 122, 123 and an arcuate connection 121. The dimension of the arcuate connection 121 and the opening angle A between the pre-bent fastening elements 122, 123 depends on the diameter of the cable sheath 13 of the fiber optic cable 11 to be connected. In a preferred embodiment, the opening angle A can have a value of 50° to 75°.

[0042] The strain relief element 80 can be provided as a stamped and bent part made of brass.

[0043] The Fig. The support element 130 shown in Figure 17 is designed as a tube and extends with an annular cross-section between the end faces 131, 132, forming a continuous cavity 133 and a cylindrical support surface 134. It can be manufactured, for example, as a turned part made of brass.

[0044] In the Fig. 18 to 24 describe the assembly of a fiber optic cable 11, the light guides 12 of which are connected at their free end regions to plug-in elements 15, with a fiber optic connector 10 according to the invention.

[0045] Before connecting the plug-in elements 15 to the exposed end areas of the optical fibers 13, the support element 130 and the strain relief element 80 are pushed over the free end area of ​​the cable sheath 13 of the fiber optic cable 11 to be connected. In a first assembly step, Fig. 18 the insertion of the plug-in elements 15 connected to the free end regions of the optical fibers 12 into the spaces provided for this purpose in the connector receptacle 30. The free end region of the cable sheath 13 with the folded-back cable strain relief element 14 is inserted into the cable opening 39. The support element 130 is inserted between the cable sheath 13 and the folded-back cable strain relief element 14. The stability of the support element 130 protects the optical fibers 12 penetrating the cable sheath 13 from mechanical stress when the cable strain relief element 14 is secured to the connector housing 20 by deforming the preformed fastening elements 122, 123 into the deformed fastening elements 124, 125. Depending on the stability of the cable sheath 13, particularly in the case of a very stable and robust cable sheath 13, the use of the support element 130 can be dispensed with.

[0046] In a second assembly step, the connector cover 50 is placed on the connector receptacle 30 according to Fig. 19 until the contact surfaces 36, 56 are in contact with each other. The guide blocks 68 of the connector cover 50 engage in the complementary guide openings 48 of the connector receptacle 30 and thus secure the horizontal position of the connector receptacle 30 to the connector cover 50. This assembly state is shown in Fig. 19 can be seen.

[0047] Sliding the strain relief element 80 in the direction of the plug-in elements 15 causes the receiving area 81 to encompass the connector housing 20 formed from the connector receptacle 30 and the connector cover 50 in the circumferential direction. The free space 89 extending through the receiving area 81 in the longitudinal direction is dimensioned such that it forms a positive connection with the connector housing 20 and secures the position of the connector receptacle 30 relative to the connector cover 50 in the vertical direction. Fig. 20, the system 82 rests on the stop surfaces 38, 58.

[0048] As the strain relief element 80 is pushed over the connector housing 20, the pre-bent locking element 91 temporarily expands. Upon reaching the previously described contact point of the stop surfaces 38, 58 on the contact surface 82, the locking element 91 engages in the recess 70 provided for this purpose, with the contact edge 94 resting against the corresponding stop surface 75. In this state, the curved connection 121 and the pre-formed fastening elements 122, 123 of the fastening area 110 encompass the cable strain relief element 14, which has been folded back over the cable sheath 13 and over the support element 130.

[0049] In the next assembly step, the cable strain relief element 14 is fixed to the connector housing 20 by deforming the preformed fastening elements 122, 123 into the deformed fastening elements 124, 125 according to Fig. 21, Fig. 22, which thereby encompass the contact area 95. The deformed fastening elements 124, 125 act with a defined preload on the cable strain relief element 14 and thus secure it by clamping it to the strain relief element 80, which is connected to the connector housing 20.

[0050] Additional support against undesired deformation of the deformed fastening elements 124, 125 due to an external tensile force on the fiber optic cable 11 is achieved by the design of the receiving area 95. Under a tensile load on the fiber optic cable 11 in the direction X, the retaining surfaces 100, 101 of the retaining section 99 counteract deformation when the end surface 119 is in contact. This is the Fig. 21, Fig. 22 removable.

[0051] In an appropriate manner, a compressive load on the fiber optic cable 11 in the direction X causes the connection surface 120 to engage the locking surfaces 102, 103 and thereby reduces undesirable deformation of the deformed fastening elements 124, 125. This is evident from the Fig. 23, Fig. 24 can be seen.

Claims

[1] Fiber optic connector (10) for connecting a fiber optic cable (11) with a cable sheath (13) surrounding an optical waveguide (12) and with a cable strain relief element (14), wherein the fiber optic connector (10) has a connector housing (20) in which a fiber optic plug element (15) connected to the optical waveguide (12) is arranged, wherein a strain relief element (80) arranged on the connector housing (20) has a fastening area (110) with deformable fastening elements (122, 123) and a contact area (95) for fixing the cable strain relief element (14) to the connector housing (20) and a receiving area (81) for receiving the connector housing (20), wherein the material in the fastening area (110) of the strain relief element (80) is folded to form a double material thickness and a end surface (119), characterized byin that the contact area (95) has a contact section (98) and a wider retaining section (99) with a retaining surface (100, 101), wherein the retaining surface (100, 101) of the retaining section (99) counteracts a deformation of the deformed fastening elements (124, 125) when the end surface (119) of the fastening area (110) is in contact. [2] Fiber optic connector (10) according to claim 1, characterized by that in the fastening area (110) the inner folding surfaces (112, 112') facing each other after folding are connected to each other. [3] Fiber optic connector (10) according to one of the preceding claims, characterized by that the strain relief element (80) is constructed in one piece. [4] Fiber optic connector (10) according to one of the preceding claims, characterized by that additional engagement elements (114, 115) are arranged in the fastening area (110). [5] Fiber optic connector (10) according to one of the preceding claims, characterized by that the contact area (95) is arranged opposite the fastening area (110). [6] Fiber optic connector (10) according to one of the preceding claims, characterized by that the deformed fastening elements (124, 125) arranged in the fastening area (110) of the strain relief element (80) surround the cable strain relief element (14) in the circumferential direction and fix it to the connector housing (20). [7] Fiber optic connector (10) according to one of the preceding claims, characterized by that the deformed fastening elements (124, 125) enclose the contact area (95) in the circumferential direction. [8] Fiber optic connector (10) according to one of the preceding claims, characterized by that a support element (130) is arranged in the radial direction between the cable strain relief element (14) and the cable sheath (13). [9] Fiber optic connector (10) according to one of the preceding claims, characterized by that the support element (130) is designed as a metallic tube. [10] Fiber optic connector (10) according to one of the preceding claims, characterized by that the connector housing (20) has a connector receptacle (30) and a connector cover (50), wherein the receptacle region (81) of the strain relief element (80) forms a positive connection to the connector housing (20) and detachably connects the connector receptacle (30) to the connector cover (50) of the connector housing (20).

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