KR101433946B1 - Optical connector - Google Patents

Abstract

The optical connector 1 includes a connector main body 6 into which a distal end portion of an optical fiber exposed from an outer surface of an optical cable is inserted, a cable jacket holder 7 for holding the jacket of the optical cable, a connector main body 6, And a holder protecting member 8 for detachably connecting the cover 7 and protecting the cable enclosure holder 7. The connector main body 6 has a ferrule 10 incorporating fibers of a short dimension and a mechanical splice for connecting fibers of a short size to an optical fiber is coupled to the rear end face of the ferrule 10 . The outer surface of the cable mantle holder 7 has a substantially square shape. The inner surface of the holder accommodating portion of the holder protecting member 8 has a substantially square shape so as to be fitted to the cable enclosure holder 7. [

Description

OPTICAL CONNECTOR

The present invention relates to an optical connector for connecting optical fibers to each other.

As a conventional optical connector, for example, one disclosed in Patent Document 1 is known. The optical connector described in this document includes a ferrule having a fiber of short dimension and a mechanical splice connected to the rear end of the ferrule and connecting the optical fiber exposed from the outer surface of the optical cable to a short- And a connecting member connected to the rear end of the mechanical splice and having a clamp portion for fixing the outer surface of the optical cable.

Patent Document 1: Japanese Patent Application Laid-Open No. 2005-114770

Some optical cables have anisotropy in ease of bending and the like. However, for example, when the optical fiber is taken out by removing the outer surface of the optical cable and assembling the optical connector by incorporating the optical fiber into the mechanical splice, it is possible to perform the operation without worrying about the anisotropy of such optical cable .

An object of the present invention is to provide an optical connector capable of performing an assembling operation without concern for anisotropy of an optical cable by an operator.

The optical connector of the present invention comprises a connector main body into which a distal end portion of an optical fiber exposed from an outer surface of an optical cable is inserted, a cable jacket holder which holds the jacket of the optical cable, and a cable jacket holder detachably connected to the connector main body and the cable jacket holder, A first restraining means for restraining the connector body in the axial direction of the optical fiber with respect to the holder protecting member, a second restraining means for restraining the cable sheath holder in the axial direction of the optical fiber with respect to the holder protecting member, Wherein the connector body comprises: a ferrule having a short dimension of fibers embedded therein; a mechanical splice disposed on a rear portion of the ferrule for connecting the optical fibers to the short dimension fibers; and a housing provided to cover the mechanical splice , The outer surface of the cable jacket holder has a substantially square shape, and the holder protecting member has a hole And a holder accommodating portion for accommodating the cable enclosure holder from the other end side of the holder protecting member, wherein the inner surface of the holder accommodating portion has a substantially square shape so as to fit into the cable enclosure holder .

To assemble the optical cable to the optical connector of the present invention, the housing of the connector body is housed in the housing housing portion of the holder protecting member. Further, the front end portion of the optical fiber is exposed from the outer surface of the optical cable, and the outer surface of the optical cable is held by the cable outer cover holder. Then, the optical fiber is inserted into the mechanical splice to connect with the short-length fiber, and the cable jacket holder is stored in the holder storage portion of the holder protecting member.

At this time, since the outer surface of the cable sheath holder has a substantially square shape and the inner surface of the holder housing portion has a substantially square shape to fit the cable sheath holder, the four outer surfaces of the cable sheath holder and the four inner surfaces Can be freely selected. That is, the cable sheath holder can be housed in four directions with respect to the holder housing portion. Therefore, it is possible to determine the storing direction of the cable sheath holder relative to the holder housing portion, for example, in accordance with the laying condition of the optical cable. Thus, the operator can perform the assembly work of the optical connector without worrying about the anisotropy of the optical cable.

Preferably, the outer surface of the housing has a substantially rectangular shape, and the inner surface of the housing receiving portion has a substantially rectangular shape to fit the housing. In this case, the manufacturing process of the holder protecting member can be simplified by, for example, fitting the inner surface shape of the housing containing portion to the inner surface shape (substantially square shape) of the holder containing portion.

Preferably, the holder protecting member has a member base forming the housing housing portion and the holder housing portion, and a lid integrated with the member base through the hinge. In this case, by housing the housing of the connector main body in the housing housing portion and closing the cover in a state in which the cable housing holder is housed in the holder housing portion, it is possible to more reliably connect the connector body and the cable housing holder to the holder protecting member have.

At this time, the first restricting means is provided on the inner surface of the housing accommodating portion so as to extend in the direction orthogonal to the axial center of the optical fiber, And has a second concave-convex shape portion to be fitted to the first concave-convex shape portion. In this case, it is possible to reliably prevent the connector main body from being displaced with respect to the holder protecting member in the axial direction of the optical fiber, without particularly preparing another member.

The second restricting means is provided with a partition wall which is provided on the member base and which divides the housing housing portion and the holder housing portion and a restraining protrusion provided on the end of the housing housing portion on at least one of the member base body and the lid desirable. In this case, it is possible to reliably prevent the cable sheath holder from shifting in the axial direction of the optical fiber with respect to the holder shield member, particularly without preparing another member.

Preferably, the cable sheath holder has a holder base having a fixing portion for fixing the sheath, and a holder cover integrated with the holder base through a hinge. In this case, the operation of holding and fixing the outer surface of the optical cable to the cable jacket holder can be easily carried out with the holder cover opened.

Preferably, the cable jacket holder and the holder protecting member are formed of polyamide or polyacetal. Polyamides and polyacetals are elastic and resistant to tensile and bending. Therefore, for example, when the cable jacket holder and the holder protecting member have the hinge, the hinge becomes difficult to break.

According to the present invention, the operator can perform the assembly work of the optical connector without worrying about the anisotropy of the optical cable. As a result, the burden on the operator is reduced, and the workability can be improved.

Hereinafter, preferred embodiments of the optical connector according to the present invention will be described in detail with reference to the drawings.

1 is an exploded perspective view of an optical connector (excluding a part of members) shown in Fig. 1, Fig. 3 is an exploded perspective view of an optical connector shown in Fig. 1 Fig. In each drawing, the optical connector 1 of the present embodiment is connected to the SC connector through a dedicated adapter, for example, though not particularly shown.

An optical cable (2) is attached to the optical connector (1). The optical cable 2 is, for example, an indoor cable as shown in Fig. The optical cable 2 includes an optical fiber 3, a pair of tension members 4 arranged to sandwich the optical fiber 3, and a plurality of optical fibers 3 and a tensile member 4 And is covered with a covering 5. The optical cable 2 is easy to bend in the direction perpendicular to the direction of arrangement of the optical fiber 3 and the tensile member 4 but has anisotropy that is difficult to bend with respect to the arrangement direction of the optical fiber 3 and the tensile member 4 .

The optical connector 1 includes a connector main body 6 in which a distal end portion (referred to as an optical fiber 3a) of an optical fiber 3 exposed from the jacket 5 of the optical cable 2 is inserted, And a holder protecting member 8 for detachably connecting the connector body 6 and the cable jacket holder 7 and for protecting the cable jacket holder 7 Respectively.

The connector body 6 has a substantially cylindrical ferrule 10 having short fibers 9 embedded therein. The short fibers 9 protrude a predetermined length rearward from the rear end face of the ferrule 10. A mechanical splice 11 is connected to the rear end face of the ferrule 10 to connect the optical fiber 3a with the short-length fiber 9.

The mechanical splice 11 includes a substrate 12 having a V-groove (not shown) for positioning an optical fiber 3a and a short-length fiber 9, a pressure plate 13, And two clamper (14) sandwiching the pressure plate (13). The optical fiber 3a and the short-length fiber 9 are butted against each other in the V-groove of the substrate 12 via a matching agent. The mechanical splice 11 is provided with a wedge 42 (see Fig. 11) for pressing the substrate 12 and the pressure plate 13 when the optical fiber 3a is connected to the short- (Not shown) are provided on both sides of the wedge.

The front end side portions of the ferrule 10 and the mechanical splice 11 are covered with the housing 15. A split sleeve 16 is inserted into the gap between the housing 15 and the ferrule 10 so as to protrude forward from the front end surface of the ferrule 10. The rear end portion of the mechanical splice 11 is covered with the housing 16 together with a part of the housing 15 to be protected. The housing 15, 16 is provided with a wedge window (not shown) corresponding to the wedge insertion port (described above) of the mechanical splice 11.

The outer surface of the housing 17 has a substantially square shape when viewed from the front-rear direction (axial direction of the optical fiber 3) of the connector body 6. [ A linear convexo-concave portion 18 extending in the left-right and up-and-down directions (direction perpendicular to the axis of the optical fiber 3) of the connector body 6 is formed on the outer surface of the rear end portion of the housing 17. The linear convexo-concave portions 18 are continuously formed over the entire four outer surfaces of the housing 17.

Further, the connector main body 6 does not have a spring for imparting a connector coupling force to the optical connector (here, the SC connector) of the other side. Therefore, the connector main body 6 can be downsized. In this case, the connector coupling force is given by a spring provided on the optical connector of the other side.

The cable enclosure holder 7 is connected to the connector main body 6 via the holder protecting member 8. 5, the cable jacket holder 7 includes a holder base body 19 for storing the optical cable 2 in a longitudinally arranged state (see Fig. 6), and a holder base body 19 And a holder cover (21) integrated through a hinge (20).

The outer surface of the cable mantle holder 7 is formed into a substantially square shape when viewed from the front and rear direction of the cable mantle holder 7 (axial direction of the optical fiber 3) in a state in which the holder cover 21 is closed with respect to the holder base 19 I have. At the rear end of the holder base 19, a pair of fixing blades 22 for fixing the outer casing 5 of the optical cable 2 are provided. The outer skin 5 is fixed to the holder base 19 by digging the outer skin 5 so that the fixing blade portion 22 of these fixing portions 22 sandwich the outer skin 5. [

A fixing protrusion 23 is provided on the outer surface of one side of the holder base 19 and a hook portion 24a having a fixing receiving hole 24a engaging with the fixing protrusion 23 is formed at the tip end of the holder cover 21. [ (24) are provided. When the holder cover 21 is closed, the fixing protrusion 23 enters the fixing receiving hole 24a and is hooked on the hook portion 24, whereby the holder base 19 and the holder cover 21 are fixed 2).

As the material of the cable mantle holder 7, it is preferable to use a resin which is resistant to tensile or bending, has excellent elasticity, and is excellent in heat resistance. Examples of such resins include polyamides containing an aliphatic skeleton (trade name: nylon) and polyacetals. By adopting these resins, the hinge 20 is hardly broken, and a cable jacket holder 7 having high wear resistance can be obtained.

When the optical cable 2 is held in the cable jacket holder 7 with the optical cable 2 arranged in the longitudinal direction with respect to the holder base 19, 22, the optical cable 2 is pushed from above. At this time, the outer skin 5 of the optical cable 2 is gradually dug into the respective fixing blade portions 22. 6 (a), the optical cable 2 is housed in the holder base 19 while the outer shell 5 is fixed to each of the fixing blade portions 22. Thereafter, as shown in Fig. 6 (b), the holder cover 21 is closed. As a result, the optical cable 2 can be securely held and fixed to the cable jacket holder 7.

The cable sheath holder 7 is protected by the holder protecting member 8. 7 and 8, the holder protecting member 8 is composed of a member base 25 and a lid 27 integrally formed with the member base 25 and the hinge 26. As shown in Fig. The outer surface and the inner surface of the holder protecting member 8 are formed into a substantially square shape when viewed from the front and rear direction of the holder protecting member 8 (axial direction of the optical fiber 3) in a state in which the lid 27 is closed with respect to the member base 25. [ Shape.

The housing base 25 has a housing housing portion 28 for housing the rear end portion of the housing 17 of the connector body 6 from the front end side of the housing base 25 and housing the cable housing holder 7, And a partition wall 30 for partitioning the housing accommodating portion 28 and the holder accommodating portion 29. The holder accommodating portion 29 is formed of a resin material. The partition wall 30 has a concave shape in order to allow the optical fiber 3a extending from the shell 5 of the optical cable 2 to pass from the holder housing portion 29 side to the housing housing portion 28 side .

The housing accommodating portion 28 is configured to be engaged with the rear end of the housing 17 in cooperation with the lid 27. The straight protruding and recessed portion 18 formed on the housing 17 is provided on the inner surface of the housing accommodating portion 28 so as to extend in the left and right and up and down directions (direction perpendicular to the axis of the optical fiber 3) Shaped convexo-concave portion 31 is formed. A portion corresponding to the wedge insertion port (described above) of the mechanical splice 11 at the bottom portion of the housing accommodating portion 28 is provided at a position corresponding to the wedge insertion slot A notch 32 is formed.

The holder accommodating portion 29 is configured to be engaged with the cable jacket holder 7 in cooperation with the lid 27. Two restraining projections 33 are provided on an end portion of the inner surface of the bottom portion of the holder accommodating portion 29 opposite to the partition wall 30, that is, at the rear end portion of the member base 25.

A portion of the lid 27 corresponding to the linear convexo-concave portion 31 extends in the lateral direction of the holder protecting member 8 and is provided with a straight convexo-concave portion A shape portion 34 is formed. Two restraining projections 35 are provided at a portion corresponding to the restraining projections 33 of the lid 27, that is, at the rear end of the lid 27. [

The rectilinear convexo-concave portions 18 and the straight convexo-concave portions 31 and 34 provided on the holder 17 and the holder protection member 8 provided on the housing 17 allow the connector body 6 to be fixed to the holder protecting member 8 with the optical fiber (3) in the direction of the axis. The partition wall 30 and the restricting protrusions 33 and 35 formed on the holder protecting member 8 are provided for restricting the cable enclosure holder 7 to the holder protecting member 8 in the axial direction of the optical fiber 3 The second restricting means.

A fixing protrusion 36 is provided on the outer surface of one side of the base member 25 and a hook portion 37a having a fixing receiving hole 37a engaging with the fixing protrusion 36 is formed at the tip end of the lid 27 37 are provided. When the cover 27 is closed, the fixing projection 36 enters the fixing receiving hole 37a and is caught by the hook portion 37, so that the member base 25 and the lid 27 are fixed.

As the material of the holder protecting member 8, a resin such as a cable sheath holder 7 is preferably used. Thereby, the hinge 26 is hardly broken, and the holder protecting member 8 having high wear resistance can be obtained.

9, the wedge windows (described above) of the housings 15 and 17 of the connector body 6 are held by the holder protecting members (not shown) when the connector main body 6 is mounted on the holder protecting member 8 The linear convexo-concave portion 18 of the housing 17 and the straight convexo-concave portion 18 of the housing compartment portion 28 of the housing 17 are arranged in a downward direction with respect to the housing accommodating portion 28 of the housing 17, The rear end portion of the housing 17 is housed in the housing accommodating portion 28 so that the housing 31 is fitted. 9, when the cable sheath holder 7 holding the optical cable 2 is mounted on the holder protecting member 8, the holder holding member 29 of the holder protecting member 8 The cable jacket holder 7 is housed. By closing the lid 27, the connector main body 6 and the cable jacket holder 7 can be reliably connected via the holder protecting member 8.

In this state, since the linear protrusion-like portion 18 of the connector main body 6 and the straight protrusion-like portions 31, 34 of the holder protection member 8 are fitted, the connector main body 6 is held by the holder protecting member 8 in the axial direction of the optical fiber 3 is prevented from moving. At this time, the linear convexo-concave portions 18 are formed on all four outer surfaces of the housing 17, the concave-convex portions 31 are formed on the inner surface of the bottom portion and both side portions of the member body 25, The connector main body 6 is strongly constrained in the axial direction of the optical fiber 3 with respect to the holder protecting member 8 because the straight uneven portion 34 is also formed on the inner surface of the optical fiber 3. Since the holder protecting member 8 is provided with the partition wall 30 and the restraining projections 33 and 35, the cable covering holder 7 can be moved in the axial direction of the optical fiber 3 with respect to the holder protecting member 8 It is also prevented from shifting. Therefore, the mechanical strength of the optical cable 2 and the optical fiber 3 for bending, tensile, and the like is sufficiently maintained, so that it is possible to secure the optical characteristics of the optical fiber 3.

It is not always necessary to form the straight convexo-concave portions on all four outer surfaces of the housing 17 if the connector main body 6 can restrain the holder protective member 8 in the axial direction of the optical fiber 3 , It is not necessary to form the linear convexo-concave portions on all four inner surfaces of the holder protecting member 8 as well. The restricting projections may be provided only in the base member 25 as long as the cable sheath holder 7 is capable of restraining the cable protective member 8 in the axial direction of the optical fiber 3, A restraining projection may be provided.

Next, a process of end-processing the optical fiber 3 of the optical cable 2 and assembling the optical connector 1 will be described.

For the assembly of the optical connector 1, the assembly paper 38 as shown in Figs. 10 and 11 is used. In each drawing, the assembling jig 38 has a jig main body 39 and a slide head 40 which can be slidably attached to the jig main body 39. On the upper surface of the jig main body 39, a connector accommodating recess 41 for positioning the optical connector 1 is provided.

A wedge 42 for forming a gap between the substrate 12 of the mechanical splice 11 and the pressure plate 13 is provided inside the jig main body 39. The wedge 42 has two insertion portions 42a to be inserted into the mechanical splice 11 from the aforementioned wedge insertion port (not shown). The wedge 42 is attached to the wedge attachment portion 43 and the wedge stopper 44 is disposed at the upper portion of the wedge attachment portion 43. The wedge stopper (44) is connected to the wedge attaching portion (43) in a state where the insertion portion (42a) of the wedge (42) penetrates. As a result, the wedge 42 moves integrally with the wedge-attaching portion 43 and the wedge stopper 44. At the front end (the end on the side of the slide head 40) of the wedge stopper 44, an inclined surface 44a which is inclined upward in the rear direction is provided. Further, the wedge-attaching portion 43 is exposed downward of the jig main body 39. The wedge 42 can be raised by pushing the wedge attaching portion 43 with the fingers.

The slide head 40 has a wedge releasing portion 45 that protrudes rearward (toward the jig main body 39). An inclined surface 45a parallel to the inclined surface 44a of the wedge stopper 44 is provided at the tip of the wedge releasing portion 45. [ The wedge releasing portion 45 is slidable in the front-rear direction along the slide guide 46 provided in the jig main body 39. An elastic body (not shown) for pressing the wedge releasing portion 45 toward the front side (the opposite side of the jig body 39) is provided inside the slide head 40.

11 (a), the leading end portion of the wedge releasing portion 45 is inserted into the inside of the jig main body 39 in the initial state of the jig 38 for assembly. 11 (b), the inclined surface 45a of the wedge releasing portion 45 is inclined with respect to the inclined surface 44a of the wedge stop portion 44, as shown in Fig. 11 (b) The wedge stopper 44 is lowered by abutting against and pushing the wedge stopper 44a. When the slide head 40 is released from the hand, the slide head 40 is returned to the initial position by the urging force of the elastic body (not shown) disposed in the slide head 40. [

When assembling the optical connector 1 using the assembling jig 38, first, as shown in Fig. 12, in a state in which the cover 27 of the holder protecting member 8 is opened, the connector main body 6 Of the housing 17 of the holder protecting member 8 is housed in the housing accommodating portion 28 of the holder protecting member 8. At this time, a protective cap 47 is inserted into the split sleeve 16 of the connector main body 6.

The connector main body 6 and the holder protecting member 8 in the connected state are inserted into the connector accommodating concave portions of the assembling jig 38 in such a manner that the notch 32 of the holder protecting member 8 is downward, 41). The insertion portion 42a of the wedge 42 is inserted into the wedge insertion port of the mechanical splice 11 by pressing the wedge attachment portion 43 of the assembly jig 38 to raise the wedge 42, A gap is formed between the substrate 12 of the mechanical splice 11 and the pressure plate 13. [

Further, the outer shell 5 of the optical cable 2 is torn and torn to pick up the optical fiber 3a. Then, as shown in Fig. 6, the optical cable 2 is attached to the cable jacket holder 7. Fig. Then, after the cable sheath holder 7 with the optical cable attached thereto is attached to a strip gauge (not shown), the optical fiber 3a is placed in a predetermined The optical fiber 3a is cut into a fiber cutter (not shown).

Next, while the optical fiber 3a is inserted into the mechanical splice 11 from the back of the connector body 6 after detaching the cable jacket holder 7 with the optical cable from the strip gauge, The cable sheath holder 7 is housed in the holder housing portion 29 of the holder protecting member 8, as shown in Fig. At this time, the refractive index matching agent is pre-filled in the vicinity of the end of the short-length fiber 9 in the V groove of the substrate 12, and the optical fiber 3a is pushed in the state of being positioned in the V groove.

11 (b), the slide head 40 of the assembling jig 38 is slid toward the jig main body 39 when the optical fiber 3a is brought into contact with the short-length fiber 9, The respective insertion portions 42a of the wedge 42 are pulled out of the mechanical splice 11. Thereby, the substrate 12 and the pressure plate 13 are brought into close contact with each other by the clamper 14, so that the optical fiber 3a and the short-length fiber 9 are connected.

Then, by closing the lid 27 of the holder protecting member 8, the assembling of the optical connector 1 is completed. Thereafter, the optical connector 1 is picked up from the connector housing recess 41 of the assembly jig 38.

In the optical connector 1 of the present embodiment as described above, the outer surface of the cable mantle holder 7 has a substantially square cross section, and the inner surface of the holder accommodating portion 29 of the holder protective member 8 is covered by the cable sheath And has a substantially square cross-section so as to be fitted to the holder 7. Therefore, the cable enclosure holder 7 can be freely housed in the holder accommodating portion 29 in four directions.

Therefore, as shown in Fig. 13 (a), the cable jacket holder 7 is set so that the optical cable 2 is in a standing state (longitudinally arranged state) with respect to the bottom surface of the holder protecting member 8 The cable enclosure holder 7 may be housed so that the optical cable 2 is placed transversely to the bottom surface of the holder protecting member 8 as shown in Figure 13 (b) You may.

Thus, even in the field, the operator can assemble the optical connector 1 so that the worker can easily work without recognizing the anisotropy (described above) of the optical cable 2, so that the burden on the operator can be reduced. Further, since it is possible to lay the optical cable 2 so that unnecessary twisting is not applied to the optical cable 2, the desired optical characteristics of the optical fiber 3 can be ensured. Furthermore, since it is not necessary to prepare a plurality of types of optical connectors in advance and to select an optical connector to be used in accordance with the laying direction of the optical cable 2, it is possible to deal with one type of optical connector 1, .

The present invention is not limited to the above-described embodiments. For example, in the optical connector 1 of the above-described embodiment, the housing 17 of the connector body 6 has a substantially square cross-section, and the housing accommodating portion 28 of the holder protecting member 8 has a substantially square- The outer shape of the housing 17 and the inner shape of the housing accommodating portion 28 are not limited to those described above and may be a substantially rectangular shape Or a circular cross section.

The optical connector 1 of the above embodiment is connected to the SC connector, but the present invention is also applicable to connection with other optical connectors.

1 is a perspective view showing an embodiment of an optical connector according to the present invention,

Fig. 2 is an exploded perspective view of the optical connector (excluding a part of members) shown in Fig. 1,

3 is a cross-sectional view of the optical connector shown in Fig. 1,

Fig. 4 is a perspective view of the optical cable shown in Fig. 1,

Fig. 5 is a perspective view showing a state in which the holder cover is opened in the cable jacket holder shown in Fig. 1;

Fig. 6 is a perspective view showing a state in which the optical cable is held in the cable jacket holder shown in Fig. 5,

Fig. 7 is a perspective view showing a state in which the lid is opened in the holder protecting member shown in Fig. 1;

8 is a perspective view of the holder protecting member in the state shown in Fig. 7 when viewed from the other direction, Fig.

9 is a perspective view showing a state in which a connector main body and a holder protecting member are mounted on the holder protecting member shown in Figs. 7 and 8. Fig.

10 is a perspective view of an assembling jig used when assembling the optical connector shown in Fig. 1, Fig.

11 is a cross-sectional view of the assembly jig shown in Fig. 10,

Fig. 12 is a perspective view showing a state in which a connector body and a holder protecting member are set in a connector housing recess of the assembling jig shown in Fig. 10; Fig.

Fig. 13 is a perspective view showing a state in which a cable jacket holder with an optical cable is housed in a holder housing portion of the holder protecting member shown in Fig. 12; Fig.

DESCRIPTION OF THE REFERENCE NUMERALS

1: Connector 2: Optical cable

3, 3a: optical fiber 5: sheath

6: Connector body 7: Cable sheath holder

8: holder protective member 9: short-length fiber

10: ferrule 11: mechanical splice

17: Housing

18: straight uneven portion (first uneven portion, first restricting means)

19: holder base 20: hinge

21: holder cover 22: fixing blade portion (fixing portion)

25: member gas 26: hinge

27: lid 28: housing housing part

29: holder holder 30: partition wall (second restraining means)

31: Straight uneven shape (second uneven shape, first restricting means)

33: restraining projection (second restraining means)

34: Straight uneven shape (second uneven shape, first restraining means)

35: restraining projection (second restraining means)

Claims (7)

A connector body into which a distal end portion of an optical fiber exposed from an outer surface of the optical cable is inserted, A cable sheath holder for holding the sheath of the optical cable, A holder protecting member detachably connecting the connector body and the cable jacket holder and protecting the cable jacket holder, First restricting means for restricting the connector main body in the axial direction of the optical fiber with respect to the holder protecting member, And second restraining means for restraining the cable jacket holder in the axial direction of the optical fiber with respect to the holder protecting member, Wherein the connector body comprises a ferrule having a short length of fibers embedded therein and a mechanical splice disposed on a rear portion of the ferrule for connecting the optical fiber to the short dimension fibers, And a housing, The outer surface of the cable jacket holder has a square shape, Wherein the holder protecting member has a housing accommodating portion for housing the housing from one end side of the holder protecting member and a holder accommodating portion for accommodating the cable enclosing holder from the other end side of the holder protecting member, And the inner surface of the holder accommodating portion has a square shape so as to be fitted to the cable enclosure holder so that the cable enclosure holder can be freely accommodated in the holder accommodating portion in four directions Optical connector. The method according to claim 1, Wherein an outer surface of the housing has a rectangular shape and an inner surface of the housing receiving portion has a rectangular shape to fit into the housing Optical connector. 3. The method according to claim 1 or 2, Wherein the holder protecting member has a member base forming the housing housing portion and the holder housing portion and a lid integrated with the member base through a hinge Optical connector. The method of claim 3, The first restricting means is provided on the inner surface of the housing accommodating portion so as to extend in a direction orthogonal to the axial center of the optical fiber, , And a second concave-convex shape portion that is fitted to the first concave-convex shape portion Optical connector. The method of claim 3, And the second restraining means is provided on the member base body and includes a partition wall partitioning the housing housing portion and the holder housing portion and a restricting portion provided on an end of the housing body and the cover at the side of the holder housing portion, Characterized in that it has a projection Optical connector. The method according to claim 1, Wherein the cable jacket holder includes a holder base having a fixing portion for fixing the casing, and a holder cover integrally formed with the holder base through a hinge Optical connector. The method according to claim 1, Wherein the cable jacket holder and the holder protecting member are formed of polyamide or polyacetal. Optical connector.

Images