TWI440910B - Optical connector - Google Patents

Description

Optical connector

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

As an optical connector of the related art, for example, an optical connector disclosed in Patent Document 1 is known. The optical connector contained in this document includes a sleeve that is fitted with a short optical fiber, a rear end portion that is connected to the sleeve, and a mechanical joint that connects the optical fiber and the short optical fiber exposed by the outer layer of the optical cable, and is connected to The mechanical joint has a rear end portion and has a joint member that fixes the nip portion of the outer layer of the optical cable.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-114770

Among the optical cable, there is an optical cable having anisotropy such as easy bendability. However, for example, in the field, the optical fiber is taken out by removing the optical cable, and the optical fiber is loaded into the mechanical joint to assemble the optical connector, and it is preferable to completely ignore the anisotropy of the optical cable. Work under.

It is an object of the present invention to provide an optical connector that an operator can perform an assembly operation without anisotropy of the optical cable.

The optical connector of the present invention is characterized in that: the connector body is inserted into the front end of the optical fiber exposed by the outer cover of the optical cable; the cable outer covering is used to hold the outer layer of the optical cable; Protecting member, which is detachably coupled to the connector body and the cable sheathing fixture, and protects the cable An outer sheath fixing mechanism; the first restraining mechanism is a pair of fixing member protecting the connector body from the axial direction of the optical fiber; and the second restraining mechanism is for the anchor protecting member to the axial direction of the optical fiber Restricting the cable outer covering fixture; the connector system comprises: a sleeve fitted with a short fiber; a mechanical joint disposed at the rear of the sleeve, connecting the optical fiber and the short optical fiber; and an outer casing provided to cover the mechanical joint; The outer surface of the cable outer covering has a substantially square shape; the retainer protection member has a housing receiving portion that receives the outer casing from one end side of the retainer protecting member, and the outer side storage cable of the retainer protecting member is externally fixed The holder housing portion of the holder; the inner surface of the holder housing portion is fitted to the cable outer covering and has a substantially square shape.

When the optical cable is assembled to the optical connector of the present invention, first, the outer casing of the connector body needs to be housed in the outer casing accommodating portion of the holder protection member. Further, the front end portion of the optical fiber is exposed by the outer covering of the optical cable, and the outer covering of the optical cable is held by the cable outer covering holder. Then, the optical fiber is inserted into the mechanical joint, and the cable outer covering is housed in the holder accommodating portion of the holder protection member while being connected to the short optical fiber.

In this case, the outer surface of the cable sheathing fixture has a substantially square shape, and the inner surface of the fixture housing portion is fitted to the cable sheathing fixture to have a substantially square shape, so that the cable outer cover can be freely selected. The combination of the four outer faces of the holder and the four inner faces of the holder receiving portion. In other words, the cable accommodating portion can accommodate the cable covering fixture in the four directions. Therefore, for example, the storage direction of the cable sheathing fixture to the holder accommodating portion can be determined in accordance with the laying condition of the optical cable. Thereby, the operator can perform the assembly work of the optical connector without paying attention to the anisotropy of the optical cable.

Preferably, the outer surface of the outer casing has a substantially square shape, and the inner surface of the outer casing accommodating portion has a substantially square shape in conformity with the outer casing. In this case, for example, the inner surface shape of the outer casing accommodating portion can be matched with the inner surface shape (substantially square shape) of the retainer accommodating portion, so that the process of the retainer protective member can be simplified.

Further, it is preferable that the holder protection member includes a member base that forms the case accommodating portion and the holder accommodating portion, and a lid that is integrated with the member base via the hinge. In this case, the housing of the connector body is housed in the housing accommodating portion, and the cable outer covering holder is housed in the holder accommodating portion, and the lid body is closed, whereby the connector body can be reliably coupled to the connector body by the holder protecting member. The cable covers the holder.

In this case, it is preferable that the first restraint mechanism includes a first uneven portion that is provided on the outer surface of the outer casing so as to extend in a direction orthogonal to the axial center of the optical fiber, and a second uneven portion that is The inner surface of the casing accommodating portion is provided so as to extend in a direction orthogonal to the axis of the optical fiber, and is fitted to the first uneven portion. In this case, even if the other members are not specially prepared, the connector body can be surely prevented from moving away from the anchor protection member toward the axial direction of the optical fiber.

Further, preferably, the second restraint mechanism includes a partition wall that is provided on the member base, and divides the outer casing accommodating portion and the retainer accommodating portion, and the restraining projection that is fixed to at least one of the member base and the lid. The end of the accommodating portion side. In this case, even if the other members are not specially prepared, it is possible to surely prevent the cable outer covering from shifting the holder protection member in the axial direction of the optical fiber.

In addition, it is preferable that the cable sheathing fixture comprises: a fixture base body, a fixing portion having a fixed outer cover; and a holder cover integrated with the holder base via a hinge. In this case, it is easy to perform the operation of holding and fixing the outer covering of the optical cable to the cable outer covering in a state where the holder cover is opened.

Further, it is preferable that the cable sheathing fixture and the holder protection member are formed of polyamine or polyacetal. Polyamide or polyacetal is a resin which is elastic and has strong tensile strength or bending resistance. Therefore, for example, in the case where the cable covering fixture and the holder protecting member have a hinge, the hinge is hard to be broken.

According to the present invention, the operator can perform the assembly work of the optical connector without the anisotropy of the optical cable. Thereby, the burden on the operator can be reduced and the workability can be improved.

Hereinafter, a suitable embodiment of the optical connector of the present invention will be described in detail with reference to the drawings.

1 is a perspective view showing an embodiment of an optical connector of the present invention, FIG. 2 is an exploded perspective view showing the optical connector shown in FIG. 1 (excluding a part of the member), and FIG. 3 is a view showing the optical connection shown in FIG. Sectional view of the device. Further, although not shown in the drawings, the optical connector 1 of the present embodiment is connected to the SC connector via a dedicated adapter, for example.

In the optical connector 1, an optical cable 2 is mounted. The optical cable 2 is, for example, an indoor cable as shown in FIG. The optical cable 2 is composed of an optical fiber 3, a tension member 4 sandwiched between one of the optical fibers 3, and a cover 5 surrounded by the optical fiber 3 and the tension member 4. The optical cable 2 has a pair perpendicular to the optical fiber 3 and the tension member 4 The direction of the arrangement direction is easily bent, but the anisotropy of the alignment of the optical fiber 3 and the tension member 4 is difficult to bend.

The optical connector 1 includes a connector body 6 for inserting a front end portion (referred to as an optical fiber 3a) of the optical fiber 3 exposed by the outer covering layer 5 of the optical cable 2, and a cable covering of the outer covering layer 5 for holding the optical cable 2 The holder 7 and the connector body 6 and the cable sheathing fixture 7 are detachably attached, and the holder protection member 8 of the cable sheathing fixture 7 is protected.

The connector body 6 has a slightly cylindrical sleeve 10 that is fitted with a short optical fiber 9. The short fiber 9 is protruded from the rear end of the sleeve 10 toward the rear by a specific length. At the rear end face of the sleeve 10, a mechanical joint 11 connecting the optical fiber 3a and the short optical fiber 9 is joined.

The mechanical joint 11 is composed of a substrate 12 having a V groove (not shown) for positioning the optical fiber 3a and the short optical fiber 9, a pressure plate 13, and two clampers 14 sandwiching the substrate 12 and the pressure plate 13. The optical fiber 3a and the short optical fiber 9 are butted together in the V groove of the substrate 12 via the refractive index integrator. Further, the mechanical joint 11 is provided with two wedge insertion ports (not shown) for inserting the wedges 42 (see FIG. 11) for pushing the substrate 12 and the platen 13 when the optical fibers 3a and the short fibers 9 are connected. .

The front end portions of the sleeve 10 and the mechanical joint 11 are covered by the outer casing 15. In the gap between the casing 15 and the sleeve 10, the split sleeve 16 is inserted so as to protrude forward from the front end of the sleeve 10. The rear end portion of the mechanical joint 11 is simultaneously covered and protected by the outer casing 16 with the outer casing 15. In the outer casings 15, 16, a wedge window (not shown) corresponding to the wedge insertion opening (described above) of the mechanical joint 11 is provided.

The outer surface of the outer casing 17 has a substantially square shape when viewed from the front and rear directions of the connector body 6 (the axial direction of the optical fiber 3). At the end of the outer casing 17 On the outside, a linear concavo-convex portion 18 extending in the right and left direction of the connector body 6 (the direction orthogonal to the axis of the optical fiber 3) is formed. The linear concavo-convex portions 18 are continuously formed on the entire outer surface of the outer casing 17.

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

In the connector body 6, the cable sheathing fixture 7 is coupled via the holder protection member 8. As shown in FIG. 5, the cable outer cover 7 is integrated with the holder base 19 that houses the optical cable 2 in a vertically placed state (see FIG. 6), and is integrated with the holder base 19 via the hinge 20. The holder cover 21 is constructed.

The outer surface of the cable outer cover 7 has a substantially square shape when viewed from the rear direction (the axial direction of the optical fiber 3) before the cable outer cover 7 is closed in a state where the holder cover 21 is closed to the holder base 19. At the rear end portion of the holder base 19, a pair of fixing blade portions 22 for fixing the outer layer 5 of the optical cable 2 are provided. The fixing blade portion 22 is inserted into the outer cover 5 so as to sandwich the outer cover 5, and the outer cover 5 is fixed to the holder base 19.

Further, a locking projection 23 is provided on the outer surface of one side of the holder base 19, and a hook portion 24 having a locking socket 24a that engages with the locking projection 23 is provided at the front end of the holder cover 21. . When the holder cover 21 is closed, the locking projection 23 can be inserted into the locking socket 24a and caught in the hook portion 24, and the holder base 19 and the holder cover 21 can be locked (see Fig. 2).

As the material of the cable sheathing fixture 7, it is preferable to use a resin which is strong in both tensile strength and bending resistance and which has excellent elasticity and heat resistance. Make Examples of the resin include polyamine (trade name: nylon) or polyacetal containing an aliphatic bone anchor. When such a resin is used, the cable sheathing fixture 7 which is difficult to break the hinge 20 and has high abrasion resistance can be obtained.

When the optical cable 2 is to be held by the cable outer covering 7, the space between the fixing blades 22 of the holder base 19 is placed in a state where the optical cable 2 is disposed longitudinally to the holder base 19. Press the cable 2 above. At this time, the coating layer 5 outside the optical cable 2 is gradually inserted into each of the fixing blade portions 22. Therefore, as shown in FIG. 6(a), the optical cable 2 can be housed in the holder base 19 in a state in which the outer cover 5 is fixed to each of the fixing blade portions 22. Thereafter, as shown in FIG. 6(b), the holder cover 21 is closed. Therefore, the optical cable 2 can be securely held ‧ fixed to the cable sheathing fixture 7 .

This cable sheathing fixture 7 is protected by the holder protection member 8. As shown in FIG. 7 and FIG. 8, the holder protection member 8 is composed of a member base 25 and a lid body 27 that is integrated with the member base 25 via a hinge 26. The outer surface and the inner surface of the holder protection member 8 have a substantially square shape when viewed from the front and rear directions (the axial direction of the optical fiber 3) of the holder protection member 8 in a state where the lid member 27 is closed to the member base 25.

The member base 25 has a housing case accommodating portion 28 that is introduced from the front end side of the member base member 25 and houses the end portion of the outer casing 17 of the connector body 6, and is introduced from the rear end side of the member base member 25 to accommodate the fixing of the cable sheathing fixture 7. The accommodating portion 29 and the partition wall 30 that divides the outer casing accommodating portion 28 and the holder accommodating portion 29. The partition wall 30 has a concave shape so that the optical fiber 3a extending from the outer cover 5 of the optical cable 2 is passed from the holder accommodating portion 29 side to the outer casing accommodating portion 28 side.

The outer casing accommodating portion 28 is configured to be engageable with the cover 27 and the rear end of the outer casing 17 The part is fitted. The inner surface of the casing accommodating portion 28 is formed to extend in the right and left direction of the holder protection member 8 (in a direction orthogonal to the axis of the optical fiber 3), and is fitted to the linear concavo-convex portion 18 formed in the casing 17. The linear concavo-convex portion 31. Further, a notch 32 for inserting the wedge 42 (see FIG. 11) into the wedge insertion opening is formed in a portion of the bottom of the casing accommodating portion 28 corresponding to the wedge insertion opening (described above) of the mechanical joint 11.

The holder housing portion 29 is configured to be engageable with the lid body 27 and to be fitted to the cable sheathing fixture 7. At the end portion on the opposite side of the partition wall 30 on the inner surface of the bottom surface of the holder accommodating portion 29, that is, at the rear end portion of the member base 25, two restraining projections 33 are provided.

In a portion of the lid body 27 corresponding to the linear concavo-convex portion 31, a linear concavo-convex portion 34 that extends in the left-right direction of the holder protection member 8 and is fitted to the linear concavo-convex portion 18 of the outer casing 17 is formed. Further, in the portion of the lid body 27 corresponding to the restraining projection 33, that is, at the rear end portion of the lid body 27, two restraining projections 35 are provided.

Here, the linear concavo-convex portion 18 provided in the outer casing 17 and the linear concavo-convex portions 31 and 34 provided in the holder protection member 8 constitute the pair of holder protection members 8, and the connector body 6 is restrained in the axial direction of the optical fiber 3. The first constraint institution. Further, the partition wall 30 and the restraining projections 33 and 35 formed in the holder protection member 8 constitute a second restraining mechanism that binds the cable sheathing fixture 7 to the anchor protection member 8 in the axial direction of the optical fiber 3.

Further, a locking projection 36 is provided on the outer surface of one side of the member base 25, and a hook portion 37 having a locking hole 37a that engages with the locking projection 36 is provided at the end portion of the lid body 27. When the cover 27 is closed, the locking protrusion 36 can be inserted into the card The fixing hole 37a is locked to the hook portion 37, and the member base 25 and the lid body 27 are locked.

As the material of the holder protection member 8, it is preferable to use a material similar to the resin of the cable sheathing fixture 7. Thereby, the holder protection member 8 which is hard to be broken by the hinge 26 and has high abrasion resistance can be obtained.

When the connector body 6 is attached to such a holder protection member 8, as shown in FIG. 9, the connector body 6 is disposed such that the wedge windows (described above) of the outer casings 15, 17 of the connector body 6 are fixed to the holder. In a state in which the outer casing accommodating portion 28 of the protective member 8 faces downward, the rear end portion of the outer casing 17 is housed in the outer casing accommodating portion 28 such that the linear concavo-convex portion 18 of the outer casing 17 is fitted into the linear concavo-convex portion 31 of the outer casing accommodating portion 28. Further, when the cable sheathing fixture 7 holding the optical cable 2 is attached to the holder protection member 8, as shown in FIG. 9, the cable sheathing fixture 7 can be housed in the holder of the holder protection member 8. Part 29. On the other hand, when the lid body 27 is closed, the connector body 6 and the cable sheathing fixture 7 can be surely coupled via the holder protection member 8.

In this state, the linear concavo-convex portions 18 of the connector body 6 are fitted to the linear concavo-convex portions 31, 34 of the holder protection member 8, so that the connector body 6 can be prevented from being attached to the optical fiber 3 by the holder protection member 8. The direction of the axis shifts away. At this time, since the linear concavo-convex portions 18 are formed on the entire outer surface of the outer casing 17, the linear concavo-convex portions 31 are formed on the inner surface of the bottom portion and both side portions of the member base 25, and the linear concavo-convex portions 34 are also formed in the cover body 27. The inner surface of the connector body 6 is in a state in which the holder protection member 8 is firmly restrained in the axial direction of the optical fiber 3. Further, since the partition protecting member 8 is provided with the partition wall 30 and the restraining projections 33 and 35, it is possible to prevent the cable outer covering holder 7 from being paired. The holder protection member 8 is displaced from the axial direction of the optical fiber 3. Therefore, the mechanical strength of the optical cable 2 and the optical fiber 3 such as bending and tensile can be sufficiently maintained, so that the optical characteristics of the optical fiber 3 can be ensured.

Further, if the connector body 8 can be restrained in the axial direction of the optical fiber 3 with respect to the anchor protection member 8, it is not necessary to form the linear concavo-convex portions on the outer surfaces of the outer casing 17 or to form the linear concavo-convex portions. The four inner faces of the holder protection member 8 are comprehensive. In addition, as long as the cable sheathing fixture 7 can be restrained in the axial direction of the optical fiber 3 with respect to the anchor protection member 8, the restraining projections may be provided only in the member base 25, or the restraining projections may be provided only in the lid body 27.

Next, a process of assembling the optical connector 2 by performing terminal processing on the optical cable 2 and the optical fiber 3 will be described.

In the assembly of the optical connector 1, an assembly jig 38 as shown in Figs. 10 and 11 is used. In each of the drawings, the assembly jig 38 has a jig body 39 and a slider 40 slidably attached to the jig body 39. A connector accommodating recess 41 for positioning the optical connector 1 is provided on the upper surface of the jig body 39.

Inside the jig body 39, a wedge 42 for forming a gap between the substrate 12 of the mechanical joint 11 and the pressure plate 13 is provided. The wedge 42 has two insertion portions 42a that are inserted into the mechanical joint 11 by the aforementioned wedge insertion opening (not shown). The wedge 42 is attached to the wedge attachment portion 43, and a wedge portion 44 is disposed above the wedge attachment portion 43. The wedge portion 44 is coupled to the wedge attachment portion 43 in a state in which the insertion portions 42a of the wedge 42 are penetrated. Thereby, the wedge 42 is movable integrally with the wedge mounting portion 43 and the wedge stop portion 44. The front end portion (the end portion on the side of the sliding head 40) of the front end portion of the wedge portion 44 is provided with an inclined surface 44a which is inclined rearward and upward. Further, the wedge attachment portion 43 is exposed to the lower side of the jig body 39. Thereby, when the operator presses the wedge mounting portion 43, the wedge can be made 42 rose.

The slider 40 has a wedge releasing portion 45 that protrudes toward the rear side (the side of the jig body 39). An inclined surface 45a parallel to the inclined surface 44a of the wedge portion 44 is provided at an end portion of the wedge releasing portion 45. The wedge releasing portion 45 is slidable in the front-rear direction along the guide portion 46 provided in the jig body 39. Further, inside the slider 40, an elastic body (not shown) that biases the wedge releasing portion 45 toward the front side (opposite side of the jig body 39) is provided.

In the initial state of the assembling jig 38, as shown in FIG. 11(a), the front end portion of the wedge releasing portion 45 is inserted into the inside of the jig body 39. In this state, when the slider 40 is pressed by hand to slide rearward, as shown in FIG. 11(b), the inclined surface 45a of the wedge releasing portion 45 abuts against the inclined surface 44a of the wedge portion 44. The wedge portion 44 is lowered, and at the same time, the wedge 42 is lowered. On the other hand, when the slider 40 is released by the hand, the slider 40 can be returned to the initial position by the biasing force of the elastic body (not shown) disposed in the slider 40.

In the case where the optical connector 1 is to be assembled by the assembly jig 38, first, as shown in Fig. 12, the rear end of the outer casing 17 of the connector body 6 is opened in a state where the cover 27 of the holder protection member 8 is opened. The housing accommodating portion 28 is housed in the holder protection member 8. At this time, the protective cover 47 is previously fitted into the split sleeve 16 of the connector body 6.

In this state, the notch 32 of the holder protection member 8 is placed on the lower side, and the connector body 6 and the holder protection member 8 in the connected state are placed in the connector housing recess 41 of the assembly jig 38. When the wedge mounting portion 43 of the assembly jig 38 is pressed to raise the wedge 42, the insertion portion 42a of the wedge 42 can be inserted into the wedge insertion opening of the mechanical joint 11, and the substrate 12 of the mechanical joint 11 can be A gap is formed between the pressure plates 13.

Further, the outer layer 5 of the optical cable 2 is pulled apart to take out the optical fiber 3a. On the other hand, as shown in FIG. 6, the optical cable 2 is attached to the cable outer covering holder 7. On the other hand, after the cable sheathing fixture 7 to which the optical cable is attached is attached to a peeling gauge (not shown), a fiber blade is used in a state in which the sheath of the end portion of the optical fiber 3a is removed. The optical fiber 3a is cut so that the optical fiber 3a has a specific length.

Next, after the cable outer covering holder 7 with the optical cable is removed by the peeling gauge, the optical fiber 3a is inserted into the mechanical joint 11 from the rear of the connector body 6, and as shown in Fig. 13, the cable is externally The cover fixture 7 is housed in the holder accommodating portion 29 of the holder protection member 8. At this time, the refractive index integrator is filled in the vicinity of the end portion of the short optical fiber 9 of the V-groove of the substrate 12, and is pressed into the optical fiber 3a while being positioned in the V-groove.

After the optical fiber 3a hits the short optical fiber 9, as shown in Fig. 11(b), the sliding head 40 of the assembling jig 38 is slid toward the jig body 39 side, and the wedge 42 is pulled out from the mechanical joint 11. Each insertion portion 42a. Thereby, the substrate 12 and the platen 13 can be brought into close contact by the clamper 14, and the optical fiber 3a and the short optical fiber 9 can be connected.

On the other hand, when the cover 27 of the holder protection member 8 is closed, the assembly of the optical connector 1 is completed. Thereafter, the optical connector 1 is taken out by 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 outer covering 7 has a substantially square cross section, and the inner surface of the holder accommodating portion 29 of the holder protecting member 8 is external to the cable. The covering fixture 7 is fitted in a substantially square shape in cross section. Therefore, the cable covering cover 7 can be freely accommodated in the holder accommodating portion 29 in the four directions.

Therefore, as shown in FIG. 13(a), the cable outer covering holder 7 can be housed in the state (vertical state) of the bottom optical cable 2 of the holder protection member 8, as shown in FIG. 13(b). The cable sheathing fixture 7 can be housed in a state in which the bottom surface of the holder protection member 8 is placed transverse to the optical cable 2.

As a result, the operator can perform the assembly of the optical connector 1 without having to care about the anisotropy (described above) of the optical cable 2, and the burden on the operator can be reduced. Moreover, since the optical cable 2 can be laid without applying unnecessary twist to the optical cable 2, the desired optical properties of the optical fiber 3 can be ensured. Further, it is possible to prepare a plurality of types of optical connectors in advance, and it is possible to use one of the optical connectors 1 without having to use the optical connector to be used in conjunction with the laying direction of the optical cable 2, which is also advantageous in terms of cost.

Further, the present invention is not limited to the above-described embodiment. For example, in the optical connector 1 of the above-described embodiment, the outer surface of the outer casing 17 of the connector body 6 is formed into a substantially square shape in cross section, and the holder protection member 8 is The shape of the inner surface of the outer casing accommodating portion 28 is formed so as to be substantially square-shaped in cross section with the lid body 27. However, the outer surface shape of the outer casing 17 and the inner surface shape of the outer casing accommodating portion 28 are not particularly limited to the above-described shape, and may be The profile is slightly rectangular or has a circular cross section.

Although the optical connector 1 of the above embodiment is an optical connector that is connected to the SC connector, the present invention is also applicable to an optical connector that is connected to other optical connectors.

1‧‧‧ optical connector

2‧‧‧ optical cable

3, 3a‧‧‧ fiber

5‧‧‧Overcoat

6‧‧‧Connector body

7‧‧‧Cable outer covering fixture

8‧‧‧Retainer protection components

9‧‧‧Short fiber

10‧‧‧ casing

11‧‧‧Mechanical joints

17‧‧‧Shell

18‧‧‧Linear embossed part (first embossed part, first restraint mechanism)

19‧‧‧Retainer base

20‧‧‧ Hinges

21‧‧‧Retainer cover

22‧‧‧Fixed blade (fixed part)

25‧‧‧Component base

26‧‧‧ Hinges

27‧‧‧ Cover

28‧‧‧Shell storage unit

29‧‧‧Retainer storage unit

30‧‧‧ partition wall (2nd restraint agency)

31‧‧‧Linear embossed part (second embossed part, first restraint mechanism)

33 ‧ ‧ Weapons of restraint (second restraint agency)

34‧‧‧Linear embossed part (second embossed part, first restraint mechanism)

35 ‧ ‧ 拘 拘 ( (2nd restraint agency)

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an embodiment of an optical connector of the present invention.

Figure 2 is a view showing the decomposition of the optical connector shown in Figure 1 (excluding a part of the components) Stereo picture.

Figure 3 is a cross-sectional view showing the optical connector shown in Figure 1.

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

Fig. 5 is a perspective view showing the state in which the holder cover is opened in the cable outer covering of Fig. 1.

6(a) and 6(b) are perspective views showing the state in which the optical cable is held in the cable sheathing fixture shown in Fig. 5.

Fig. 7 is a perspective view showing a state in which the cover body is opened in the holder protection member shown in Fig. 1.

Fig. 8 is a perspective view showing the holder protection member in the state shown in Fig. 7 in a different direction.

Fig. 9 is a perspective view showing a state in which the connector body and the holder protection member are attached to the holder protection member shown in Figs. 7 and 8;

Fig. 10 is a perspective view showing an assembly jig used when the optical connector shown in Fig. 1 is assembled.

11(a) and 11(b) are cross-sectional views showing the jig for assembly shown in Fig. 10.

Fig. 12 is a perspective view showing a state in which the connector body and the holder protection member are placed in the connector housing recess of the assembly jig shown in Fig. 10.

(a) and (b) of FIG. 13 are perspective views showing a state in which the cable sheathing with the optical cable is housed in the holder housing portion of the holder protection member shown in FIG.

1‧‧‧ optical connector

6‧‧‧Connector body

7‧‧‧Cable outer covering fixture

8‧‧‧Retainer protection components

10‧‧‧ casing

15, 17‧‧‧ Shell

18‧‧‧Linear embossed part (first embossed part, first restraint mechanism)

19‧‧‧Retainer base

21‧‧‧Retainer cover

23‧‧‧Card with protrusion

24‧‧‧ hook

24a‧‧‧卡定承孔

25‧‧‧Component base

26‧‧‧ Hinges

27‧‧‧ Cover

31‧‧‧Linear embossed part (second embossed part, first restraint mechanism)

32‧‧‧ gap

Claims (3)

An optical connector, comprising: a connector body inserted into an end portion of an optical fiber exposed by a coating outside the optical cable; and a cable outer covering device for holding the outer covering layer of the optical cable; a holder protection member that detachably connects the connector body and the cable sheathing fixture and protects the cable sheathing fixture; and a first restraining mechanism that faces the holder protection member The connector body is restrained in the axial direction of the optical fiber; and the second restraining mechanism binds the cable sheathing fixture to the axial direction of the optical fiber with respect to the anchor protection member; the connector system includes: a casing for inserting a short fiber; a mechanical joint disposed at a rear portion of the sleeve, connecting the optical fiber and the short optical fiber; and a casing provided to cover the mechanical joint; the outer surface of the cable outer covering has a rough a square shape; the holder protection member has an outer casing accommodating portion for accommodating the outer casing from one end side of the holder protection member, and the holder The other edge side guard member accommodating the cable retainer housing portion of the outer cover is fixed; the inner surface of the receiving portion of the holder with the cable holder fitting outer cover has a roughly rectangular shape. The aforementioned retainer protection member includes a front housing receiving portion and a front portion A member base of the holder accommodating portion and a lid body integrated with the member base via a hinge. The outer surface of the outer casing has a substantially square shape, and the inner surface of the outer casing accommodating portion has a substantially square shape in fitting with the outer casing. The first restraint mechanism includes: a first uneven portion that is provided on an outer surface of the outer casing so as to extend in a direction orthogonal to an axial center of the optical fiber; and a second uneven portion that is oriented The axial direction of the optical fiber extends in a direction orthogonal to the inner surface of the outer casing accommodating portion, and is fitted to the first concave-convex portion. The second restraint mechanism includes a partition wall that is disposed on the member base, and divides the outer casing accommodating portion and the retainer accommodating portion, and a restraining projection that is attached to at least one of the member base and the cover. The end of the holder accommodating portion side. The optical connector of claim 1, wherein the cable outer cover comprises: a holder base having a fixing portion for fixing the outer cover; and a holder cover that is coupled to the holder via a hinge Matrix integration. The optical connector of claim 1, wherein the cable outer covering holder and the aforementioned holder protecting member are formed of polyamine or polyacetal.