JP6672232B2 - Optical connector - Google Patents

Description

  The present invention relates to an optical connector.

  Patent Documents 1 to 3 disclose an optical connector attached to an end of an optical cable. Such an optical connector is provided with a boot for reducing the bending load on the optical cable and protecting the optical cable.

US Patent No. 7090406 JP 2008-52236 A JP-A-2006-164598

  If water enters the inside of the optical connector through a gap near the boot, it causes a failure of the optical connector.

  An object of the present invention is to suppress inundation from a gap near a boot.

A main invention for achieving the above object is an optical connector attached to an end of an optical cable, which is fastened to the housing while covering a housing, a boot for protecting the optical cable, and at least a part of the boot. The boot has a receiving portion formed in a flange shape, and when the fastening member is fastened to the housing, the receiving portion of the boot moves the housing from the fastening member to the housing. The end face of the housing and the end face of the boot are in close contact with each other so as to surround the optical cable by being pressed in a direction toward the optical cable , and the space between the end face of the housing and the end face of the boot is waterproofed. Optical connector.

  Other features of the present invention will be apparent from the description in the specification and the drawings described below.

  ADVANTAGE OF THE INVENTION According to this invention, inundation from the clearance gap near a boot can be suppressed.

FIG. 1A is a perspective view of the optical connector 100. FIG. 1B is an exploded view of the optical connector 100. FIG. 2 is a sectional view of the optical connector 100. FIG. 3A to FIG. 3C are explanatory diagrams of a state when the clamp member 10 is attached to the end of the optical cable 1. 4A to 4E are explanatory diagrams of the state of the pre-processing of the optical fiber 3. FIG. 4A to 4E are explanatory diagrams of the holder 60 used for the pretreatment of the optical fiber 3. FIG. 5A to FIG. 5E are explanatory diagrams of a state in which the connector unit 20 is attached. FIG. 6 is an explanatory diagram of a state at the time of assembling the optical connector 100. 7A to 7C are explanatory diagrams of the clamp member 10. FIG. 8A is a cross-sectional view of the clamp member 10 before the retaining screw 13 is tightened. FIG. 8B is a cross-sectional view of the clamp member 10 in a state after the fastening screw 13 is tightened. FIG. 9A is a perspective view of the holder 60. FIG. 9B is an exploded view of the holder 60. FIG. 10A is a sectional view of the boot unit 40. FIG. 10B is an enlarged view of a region indicated by a dotted line in FIG. 10A and is an explanatory diagram of a state of the boot 44 when the tightening member 46 is tightened. FIG. 11A is a cross-sectional view of a boot unit 40 according to the second embodiment. 11B is an enlarged view of a region indicated by a dotted line in FIG. 11A and is an explanatory diagram of a state of the boot 44 when the fastening member 46 is tightened.

  At least the following matters will be apparent from the description in the specification and the drawings described below.

  An optical connector attached to an end of an optical cable, comprising: a housing; a boot for protecting the optical cable; and a fastening member fastened to the housing while covering at least a part of the boot. When the member is fastened to the housing, the optical connector is characterized in that the gap between the housing and the boot is narrowed by pressing the boot from the fastening member. Thereby, inundation from the gap between the housing and the boot can be suppressed.

  The boot has a tapered receiving portion, and when the fastening member is fastened to the housing, the receiving portion is pressed in a direction from the fastening member toward the housing, whereby It is desirable that the gap between the boot and the optical cable be narrowed by narrowing the gap between the housing and the boot and by pressing the receiving portion in the direction from the fastening member toward the optical cable. . Thereby, water intrusion from two gaps near the boot can be suppressed.

  The boot has a flange-shaped receiving portion, and when the fastening member is fastened to the housing, the receiving portion is pressed in a direction from the fastening member toward the housing, whereby the boot is pressed. It is desirable that the gap between the housing and the boot be reduced. Thereby, inundation from the gap between the housing and the boot can be suppressed.

  An optical connector attached to an end of an optical cable, comprising: a housing; a boot having a cable insertion hole through which the optical cable is inserted; and a tightening member fastened to the housing while covering at least a part of the boot. An optical connector, wherein when the fastening member is fastened to the housing, the boot is pressed from the fastening member, whereby a gap between the boot and the optical cable is narrowed. Becomes Thereby, inundation from the gap between the boot and the optical cable can be suppressed.

  The boot has a tapered receiving portion, and when the fastening member is fastened to the housing, the receiving portion is pressed in a direction from the fastening member toward the optical cable. It is desirable that a gap between the boot and the optical cable be narrowed, and that the gap between the housing and the boot be narrowed by pressing the receiving portion in a direction from the fastening member toward the housing. . Thereby, water intrusion from two gaps near the boot can be suppressed.

=== First Embodiment ===
<Basic configuration of optical connector 100>
FIG. 1A is a perspective view of the optical connector 100. FIG. 1B is an exploded view of the optical connector 100. FIG. 2 is a sectional view of the optical connector 100.

  In the following description, each direction is defined as shown in the figure. That is, the connector attaching / detaching direction is referred to as the “front-back direction”, the partner optical connector side is referred to as “front”, and the opposite side is referred to as “rear”. The longitudinal direction of the optical cable 1 (or the optical fiber 3 or the tensile strength member 5) is the front-back direction. Also, the major axis direction of the cross section of the flat optical cable 1 (the direction in which the two strength members 5 of the optical cable 1 are arranged) is defined as the left-right direction, and the right hand side when viewed from the rear side to the front side is defined as “right”. The opposite side is “left”. A direction perpendicular to the front-rear direction and the left-right direction is referred to as a “vertical direction”.

  The optical connector 100 in the figure is a connector attached to an end of the optical cable 1, and is a connector that can be attached to and detached from a receptacle-side optical connector (not shown). The optical connector 100 of the present embodiment is a connector attached to the end of the optical cable 1 processed on site, and is a connector called an on-site assembled optical connector or an on-site optical connector. When the optical connector 100 is connected to a receptacle-side optical connector (not shown), the end faces of the ferrule 21 abut. Thereby, the end faces of the optical fibers 3 physically abut each other, and the optical fibers 3 are optically connected. The optical cable 1 extends from the rear side of the optical connector 100. On the rear side of the optical connector 100, a boot 44 for protecting the optical cable 1 is attached. The optical cable 1 to which the optical connector 100 is attached is an optical cable with an optical connector.

  The optical cable 1 has an optical fiber 3 and two strength members 5 (see FIG. 1A). Here, the optical fiber 3 is housed in a tube cable 2 in which a tube is filled with gel. The tube cable 2 accommodates one optical fiber 3, but may accommodate a plurality of optical fibers 3. Further, the optical fiber 3 may be directly housed in the jacket 7 of the optical cable 1 without passing through a tube. The two strength members 5 are arranged so as to sandwich the optical fiber 3 (tube cable 2). For this reason, the optical cable 1 configured by covering the optical fiber 3 (tube cable 2) and the two strength members 5 with the jacket 7 has a flat cross section. The optical cable 1 may include a member (for example, a lip cord or a water-absorbing yarn) different from the optical fiber 3 and the tensile member 5 housed in the jacket 7.

  The optical connector 100 includes a clamp member 10, a connector unit 20, a coupling unit 30, a providing mechanism 35, and a boot unit 40.

  The clamp member 10 is a housing attached to an end of the optical cable 1. Since the clamp member 10 is a housing fixed to the end of the optical cable 1, it may be called a fixing housing. The clamp member 10 has a fiber insertion hole 11A and a pair of strength member holes 11B. The clamp member 10 is fixed to the end portion of the optical cable 1 by being fixed to the strength member 5 protruded from the optical cable 1. In the present embodiment, the clamp member 10 can be fixed to the strength member 5 by tightening the retaining screw 13 of the clamp member 10. The detailed configuration of the clamp member 10 will be described later.

  The connector unit 20 includes a ferrule 21, a mechanical splice 23, and a connector unit housing 25. Here, the ferrule 21 is a cylindrical ferrule used for a single-core optical connector. The front end of the built-in fiber is fixed to the ferrule 21 in advance, and the built-in fiber is polished together with the ferrule 21 at the end face. The rear end of the built-in fiber is arranged in an alignment groove of the mechanical splice 23. The mechanical splice portion 23 is a member that axially aligns (aligns) the built-in fiber and the optical fiber 3 exiting from the optical cable 1 by a mechanical splice method, and fixes the built-in fiber and the optical fiber 3 in a state where they are put together. is there. The optical fiber 3 exiting from the optical cable 1 is inserted into the mechanical splice section 23 from the rear side of the connector unit 20 and hits the built-in fiber. When the insertion member 27 (see FIGS. 5A to 5C) attached to the connector unit 20 is removed in a state where the end faces of the optical fiber 3 abut against each other, the optical fiber 3 is fixed by the mechanical splice 23. become. The connector unit housing 25 is a housing for accommodating a part (flange portion) of the ferrule 21 and the mechanical splice portion 23. In the present embodiment, since the built-in fiber and the optical fiber 3 can be connected by the mechanical splice method, the optical connector can be assembled at the assembly site by a simple assembling operation.

  The coupling unit 30 is a member that is connected to a receptacle-side housing (not shown). The coupling unit 30 includes a rotating member 31 and a front housing 33, and is configured as a bayonet-type coupling mechanism. The rotating member 31 is a cylindrical member rotatable with respect to the front housing 33, and has a locking portion for locking (hooking) a coupling portion of the receptacle-side housing (not shown). The front housing 33 is a housing for housing the connector unit 20 and the application mechanism 35. The front portion of the front housing 33 is an insertion portion inserted inside a cylindrical receptacle-side housing (not shown). A male screw part 33A (a screw thread is not shown in the figure) is formed on the outer peripheral surface of the rear part of the front housing 33, and the male screw part 33A is a female screw part of the rear housing 42 of the boot unit 40. Fits with 42A.

  The applying mechanism 35 is a mechanism that applies a rearward force to the optical connector 100 (plug-side optical connector) when the connector is connected. The application mechanism 35 has a movable housing 35A and a spring 35B. The movable housing 35A is a housing movable in the front-rear direction with respect to the ferrule 21 while accommodating the front part of the connector unit 20 (ferrule 21) and the spring 35B. The movable housing 35A is formed in a tubular shape, and an end face of the ferrule 21 is exposed from an opening on the front side. A flange is formed on the movable housing 35A, and the flange contacts a protruding portion formed on the inner peripheral surface of the front housing 33, thereby preventing the movable housing 35A from slipping forward while connecting the connector. The movable housing 35 </ b> A is allowed to move rearward with respect to the front housing 33. The spring 35B is an elastic member that applies a rearward force to the optical connector 100 (plug-side optical connector) when the connector is connected. The ferrule 21 is inserted into the center cavity of the spring 35B. The spring 35B is arranged in a contracted state between the movable housing 35A and the connector unit 20, and generates a repulsive force between the both. Due to the repulsive force of the spring 35B, the coupling (jagging) between the rotating member 31 of the coupling unit 30 and the coupling portion of the receptacle-side housing (not shown) is strengthened, and the optical connector 100 is not easily detached.

  The boot unit 40 is a protection member for protecting the rear part of the optical connector 100 and the optical cable 1. The boot unit 40 has a rear housing 42, a boot 44, and a fastening member 46. The rear housing 42 is a housing for housing the clamp member 10. A female screw portion 42A (a screw thread is not shown in the drawing) is formed on the inner peripheral surface of the front portion of the rear housing 42, and the female screw portion 42A is formed on the front housing 33 of the coupling unit 30. It fits with the male screw part 33A. The boot 44 is a member that protects the optical cable 1. A cable insertion hole is formed in the boot 44, and the optical cable 1 is inserted into the cable insertion hole. The fastening member 46 is a tubular (nut-shaped) member for fixing the boot 44 to the rear housing 42. A male screw portion 42B (a screw thread is not shown in the figure) is formed on the outer peripheral surface of the rear portion of the rear housing 42, and a female screw portion 46A ( A thread is not shown in the figure), and a rear portion of the rear housing 42 and a front portion of the fastening member 46 are fitted. In this embodiment, the gap between the rear housing 42 and the boot 44 is narrowed by screwing the fastening member 46 to the rear housing 42, and the gap between the boot 44 and the optical cable 1 is narrowed. Water from the gap is suppressed. The detailed configuration of the boot unit 40 will be described later.

  An inner housing 51 is constituted by the clamp member 10 and the connector unit housing 25. A rear flange 11E (step portion) protruding outward is formed at the front of the clamp member 10, and a front flange 25A protruding outward is formed at the rear of the connector unit housing 25. . The rear flange 11E and the front flange 25A form a flange 51A protruding outward in the center of the inner housing.

  Further, an outer housing 52 is constituted by the front housing 33 and the rear housing 42. The outer housing 52 is a housing that houses the inner housing 51 (the clamp member 10 and the connector unit housing 25). The rear end surface of the front housing 33 is a contact portion that comes into contact with the step surface of the front flange portion 25A (step portion) of the connector unit housing 25. A contact portion (step portion) protruding inward is formed on the inner peripheral surface of the rear housing 42, and comes into contact with the rear flange 11 </ b> E of the clamp member 10. When the front housing 33 and the rear housing 42 are fitted (screwed), the flange 51A of the inner housing 51 (the rear flange 11E of the clamp member 10 and the front flange 25A of the connector unit housing 25) are connected to the front housing. The inner housing 51 (the clamp member 10 and the connector unit housing 25) is fixed inside the outer housing 52 by being sandwiched between the rear housing 33 and the rear housing 42 in the front-rear direction.

<Assembling method of optical connector 100>
Next, a method of assembling the optical connector 100 will be described.

  FIG. 3A to FIG. 3C are explanatory diagrams of a state when the clamp member 10 is attached to the end of the optical cable 1. After inserting the boot unit 40 (see FIG. 6) into the optical cable 1 in advance, as shown in FIG. 3A, the operator removes the optical fiber 3 and the tensile strength member 5 from the end (outlet) of the jacket 7 of the optical cable 1. An end portion of the optical cable 1 is pre-processed (extracting process) so as to protrude forward. As shown in FIGS. 3A and 3B, the operator inserts the optical fiber 3 led out from the optical cable 1 into the fiber insertion hole 11A of the clamp member 10 and inserts the tensile member 5 led out from the optical cable 1 into the clamp member 10. Into the hole 11B for tensile strength. At this time, the optical fiber 3 penetrates the fiber insertion hole 11A and protrudes forward from the clamp member 10. On the other hand, the front end of the strength member 5 is disposed inside the strength member hole 11B without penetrating the strength member hole 11B.

  After inserting the strength member 5 into the strength member hole 11B of the clamp member 10 as shown in FIG. 3B, the worker tightens the retaining screw 13 as shown in FIG. It is fixed to the clamp member 10. As described above, in the present embodiment, the strength member 5 and the clamp member 10 can be fixed without using an adhesive. The detailed configuration of the clamp member 10 will be described later.

  By the way, as shown in FIG. 3A, before inserting the tensile strength member 5 into the clamp member 10, the screw head of the retaining screw 13 protrudes from the outer surface of the clamp member 10 (main body 11). When fixing the strength member 5 and the clamp member 10, the operator tightens the screw 13 until the screw head of the screw 13 is hidden from the outer surface of the clamp member 10. If the screw head of the retaining screw 13 protrudes from the outer surface of the clamp member 10, the screw head of the retaining screw 13 contacts the inner wall surface of the outer housing 52 (specifically, the rear housing 42 of the boot unit 40). As a result, the clamp member 10 cannot be accommodated in the outer housing 52. Thereby, insufficient tightening of the retaining screw 13 can be prevented, and the tensile strength member 5 can be fixed by the retaining screw 13 with a predetermined tightening force.

  4A to 4E are explanatory diagrams of the state of the pre-processing of the optical fiber 3. FIG. 4A to 4E are explanatory diagrams of the holder 60 used for the pretreatment of the optical fiber 3.

  4A and 4B, the worker mounts the clamp member 10 to which the optical cable 1 is attached on the holding member 70 of the holder 60. After attaching the clamp member 10 to the holding member 70 of the holder 60 as shown in FIG. 4B, the worker moves the holding member 70 forward with respect to the spacer member 80 as shown in FIG. The spacer member 80 is moved rearward with respect to the holding member 70), and the front end surface of the clamp member 10 is abutted against the spacer member 80. In the state shown in FIG. 4C, the worker removes the coating on the end of the optical fiber 3 using a stripper (not shown) and cuts the end of the optical fiber 3 using a cutter (not shown). At this time, by the holder 60 (specifically, the spacer member 80) functioning as a spacer, the end of the optical fiber 3 is pre-processed so that the optical fiber 3 of a predetermined length extends forward from the clamp member 10. After the pretreatment of the end of the optical fiber 3, the operator rotates the spacer member 80 with respect to the holding member 70, as shown in FIG. 4D and FIG. I can go away. The detailed configuration of the holder 60 will be described later.

  FIG. 5A to FIG. 5E are explanatory diagrams of a state in which the connector unit 20 is attached.

  As shown in FIG. 5A, the connector unit 20 to which the insertion member 27 is attached is held in advance by the slider 90. As shown in FIG. 5A, the operator sets the holder 60 holding the clamp member 10 on the slider 90, moves the holder 60 along the slider 90 to the connector unit 20 side, and moves the optical fiber 3 to the connector unit 20. (Specifically, it is inserted into the mechanical splice part 23). As shown in FIG. 5A, the holder 60 (specifically, the holding member 70) is provided with a claw portion 75, and the operator operates until the claw portion 75 of the holder 60 is caught on the front flange portion 25 </ b> A of the connector unit 20. The holder 60 is moved to the connector unit 20 side along the slider 90. By moving the holder 60 until the claw portion 75 is hooked on the front flange portion 25A of the connector unit 20, the operator inserts the optical fiber 3 of a predetermined length into the connector unit 20 (specifically, the mechanical splice portion 23). Thus, the optical fiber 3 can be reliably brought into contact with the end face of the built-in fiber (not shown) of the connector unit 20. In addition, since the claw portion 75 of the holder 60 is hooked on the front flange portion 25A of the connector unit 20, the state in which the end faces of the optical fibers 3 abut against each other can be maintained. After hooking the claw portion 75 of the holder 60 on the front flange portion 25A of the connector unit 20 as shown in FIG. 5B, as shown in FIG. 5C, the operator removes the insertion member 27 from the connector unit 20 and removes the wedge 27A. Is removed from the mechanical splice 23, and the optical fiber 3 is fixed by the mechanical splice 23. As shown in FIG. 5D, the connector unit 20 can be detached from the slider 90 when the insertion member 27 is detached. After removing the connector unit 20 from the slider 90, the worker takes out the clamp member 10 and the connector unit 20 from the holder 60 as shown in FIG. 5E.

  As shown in FIG. 5A, a pair of protrusions 25B are formed at the rear end of the connector unit housing 25 of the connector unit 20. In addition, a pair of engagement holes 11D are formed at the front end of the clamp member 10. The protruding portion 25B is formed slightly larger than the engaging hole 11D. As shown in FIG. 5B, when the holder 60 is moved until the claw portion 75 is hooked on the front flange portion 25A of the connector unit 20, the protruding portion 25B is The protrusion 25B and the engagement hole 11D are press-fitted into the engagement hole 11D and fitted like an interference fit. The connector unit 20 is fixed to the clamp member 10 even after the clamp member 10 and the connector unit 20 are taken out from the holder 60 by fitting the protrusion 25B and the engagement hole 11D like an interference fit. (See FIG. 5E).

  FIG. 6 is an explanatory diagram of a state at the time of assembling the optical connector 100. FIG. 6 shows a state in which the inner housing 51 (the clamp member 10 and the connector unit housing 25) is housed in the outer housing 52 (the front housing 33 and the rear housing 42).

  The operator fastens the front housing 33 of the coupling unit 30 and the rear housing 42 of the boot unit 40 with screws while disposing the applying mechanism 35 on the front side of the connector unit 20, and tightens the external housing 52 (the front housing 33). And the rear housing 42) accommodates the internal housing 51 (the clamp member 10 and the connector unit housing 25). When the front housing 33 and the rear housing 42 are fitted with each other, the flange 51A of the inner housing 51 (the rear flange 11E of the clamp member 10 and the front flange 25A of the connector unit housing 25) are connected to the front housing 33 and the rear. The inner housing 51 (the clamp member 10 and the connector unit housing 25) is fixed in the outer housing 52 by being sandwiched between the housing 42 and the front and rear directions. After the coupling unit 30 is attached, the worker tightens (fastens) the fastening member 46 to the rear housing 42 for waterproofing. The detailed configuration of the boot unit 40 will be described later.

  In the present embodiment, in a state where the screw head of the retaining screw 13 protrudes from the main body 11 (see FIG. 3B), when the internal housing 51 is accommodated in the external housing 52, the screw head of the retaining screw 13 is connected to the external housing 52. The inner housing 51 comes into contact with the inner wall surface of the outer housing 52 and cannot be housed in the outer housing 52 (the housing of the clamp member 10 in the outer housing 52 is hindered). Thereby, insufficient tightening of the retaining screw 13 can be prevented, and the tensile strength member 5 can be fixed by the retaining screw 13 with a predetermined tightening force.

  The optical connector 100 of the present embodiment is assembled (manufactured) by the above-described assembly procedure. According to the method for manufacturing the optical connector 100 of the present embodiment, the strength member 5 and the clamp member 10 can be fixed without using an adhesive. In the case where the optical connector 100 is a field-assembled optical connector as in the present embodiment, it is particularly convenient that the strength member 5 and the clamp member 10 can be fixed without using an adhesive.

<About the clamp member 10>
7A to 7C are explanatory diagrams of the clamp member 10. FIG. 7A is a perspective view of the clamp member 10. FIG. 7B is a transparent perspective view in which the main body 11 of the clamp member 10 is transmitted. FIG. 7C is a transparent perspective view in a state where the strength member 5 of the optical cable 1 is inserted into the strength member hole 11B of the clamp member 10. FIG. 8A is a cross-sectional view of the clamp member 10 before the retaining screw 13 is tightened. FIG. 8B is a cross-sectional view of the clamp member 10 in a state after the fastening screw 13 is tightened.

  The clamp member 10 has a main body 11 and a retaining screw 13. In addition, the clamp member 10 of the present embodiment also has a metal sleeve 15 that is an intervening member.

  The main body 11 is a member that forms the main body of the clamp member 10. The main body 11 has a fiber insertion hole 11A, a pair of strength member holes 11B, a screw hole 11C, an engagement hole 11D, a rear flange 11E, a key groove 11F, and a protrusion 11G.

  The fiber insertion hole 11A is a through hole through which the optical fiber 3 led out from the optical cable 1 is inserted. Since the optical fiber 3 bends when the optical fiber 3 is abutted against the built-in fiber by the mechanical splice method, the cross-sectional shape of the fiber insertion hole 11A has a shape extending vertically.

  The strength member hole 11 </ b> B is a hole for inserting the strength member 5 protruded from the optical cable 1. The strength member hole 11B is a through hole in this case, but may be a closed non-through hole on the front side as long as the strength member 5 can be inserted from the rear side. The pair of strength member holes 11B are arranged so as to sandwich the fiber insertion hole 11A from the left and right directions. In the present embodiment, the metal sleeve 15 is disposed in the strength member hole 11B (see FIG. 7B).

  The screw hole 11C is a screw hole 11C in which a female screw for the retaining screw 13 is formed. The screw hole 11 </ b> C is formed along the up-down direction, and is formed so as to penetrate the outside of the main body 11. When viewed from the left-right direction, the pair of screw holes 11C are arranged vertically symmetrically with respect to the strength member hole 11B. Also, when viewed from the left and right directions, two pairs of screw holes 11C arranged vertically symmetrically are arranged side by side in the front and rear direction. That is, two screw holes 11C are arranged side by side in the front-rear direction above each of the strength member holes 11B, and two screw holes 11C are also arranged side by side in the front-rear direction on the lower side. The screw hole 11C and the lower screw hole 11C are opposed to each other with the tensile strength body hole 11B interposed therebetween. For this reason, in this embodiment, a total of eight screw holes 11 </ b> C are formed in the main body 11. A retaining screw 13 is arranged in each screw hole 11C.

  The retaining screw 13 is a screw for retaining the strength member 5 to the clamp member 10 (the main body 11). When the retaining screw 13 is tightened, the tensile strength member 5 is tightened by the retaining screw 13, whereby the optical cable 1 is retained on the clamp member 10 (the main body 11) via the tensile strength member 5. The retaining screw 13 has a function as an anchor for retaining the strength member 5. In the present embodiment, a large holding force can be obtained because the holding screw 13 has a larger force for tightening the tensile strength member 5 than the holding screw 13 tightening force (torque). In addition, since the clamp member 10 (the inner housing 51) is required to have a size that can be accommodated in the outer housing 52, it is particularly important that the clamp member 10 of the present embodiment can obtain a large holding force even if it is small in size. is important.

  In the present embodiment, the retaining screw 13 is formed to be shorter than the length (depth) of the screw hole 11C, and the screw head of the retaining screw 13 has the same thickness as the shaft. That is, the retaining screw 13 is a set screw and a set screw. As a result, the screw head of the retaining screw 13 can be embedded in the screw hole 11C, and until the screw head of the retaining screw 13 is hidden from the outer surface of the clamp member 10 (the main body 11) (see FIG. 3C). Can be tightened. In other words, in the present embodiment, the main body 11 has a screw hole 11C into which the retaining screw 13 can be embedded. Note that the retaining screw 13 is not limited to a set screw, and even if the retaining screw 13 has a larger screw head than the shaft portion, if the opening of the screw hole 11C is enlarged, the retaining screw 13 can be attached to the main body 11. An implantable screw hole 11C can be configured. In the present embodiment, a hexagonal hole is formed in the screw head (head) of the retaining screw 13, but a plus groove or a minus groove may be formed instead of the hexagonal hole.

  When viewed in the left-right direction, the pair of retaining screws 13 are arranged so as to sandwich the strength member hole 11B (the metal sleeve 15 in the present embodiment) from above and below (see FIGS. 8A and 8B). Thereby, the tensile strength member 5 can be sandwiched from both sides in the vertical direction by the pair of retaining screws 13, and a strong retaining force can be realized. When the tension member 5 is tightened with the retaining screw 13 from only one side in the vertical direction, the tension member 5 cannot be sandwiched with an equal force, and the tensile member 5 is bent, and the retention force is weakened.

  When viewed from the left and right directions, two pairs of the retaining screws 13 arranged vertically are arranged side by side in the front-rear direction (see FIGS. 8A and 8B). In other words, two retaining screws 13 are arranged in the front-rear direction above the respective strength member holes 11B, and two retaining screws 13 are also arranged in the front-rear direction on the lower side, The upper retaining screw 13 and the lower retaining screw 13 are opposed to each other with the tensile strength body hole 11B interposed therebetween. In this way, by arranging the plurality of retaining screws 13 in the front-rear direction, a strong retaining force can be realized.

  The engagement hole 11D is a hole into which the protrusion 25B (see FIG. 5A) at the rear end of the connector unit housing 25 fits. The engagement hole 11D is formed at the front end (front end surface) of the clamp member 10. The engagement hole 11D is formed to be slightly smaller than the protrusion 25B, and the protrusion 25B fits like an interference fit. By fitting the protrusion 25B and the engagement hole 11D like an interference fit, even before the inner housing 51 is housed in the outer housing 52 (see FIG. 5E), the connector unit 20 can be moved relative to the clamp member 10. Can be fixed.

  The rear flange 11 </ b> E is a portion (step portion) that protrudes outward at the front of the clamp member 10. The rear flange 11 </ b> E, together with the front flange 25 </ b> A of the connector unit housing 25, forms a flange 51 </ b> A that protrudes outward at the center of the internal housing 51. When the inner housing 51 is housed in the outer housing 52, the rear flange 11E comes into contact with a contact portion (step portion) projecting inward from the inner peripheral surface of the rear housing 42 (see FIG. 2). .

  The key groove 11F is a groove-shaped portion formed on the outer peripheral surface of the clamp member 10. The key groove 11F is configured to fit with the key projection 72 of the holder 60, and regulates the posture of the clamp member 10 when the clamp member 10 is accommodated in the holder 60. The key groove 11 </ b> F is formed in a groove shape extending in the vertical direction, and limits the rotational displacement of the clamp member 10 with respect to the holder 60 and the positional deviation of the clamp member 10 with respect to the holder 60 in the front-rear direction and the left-right direction.

  The protruding portion 11G is a portion formed to protrude rearward from the rear end of the clamp member 10. Projections 11G are formed above and below the rear end of the clamp member 10 so as to project rearward. The pair of upper and lower protrusions 11G grips the jacket 7 of the flat optical cable 1 from the vertical direction (the short diameter direction of the optical cable 1). Thus, even before the fastening screw 13 is tightened (see FIG. 3B), the displacement of the clamp member 10 with respect to the optical cable 1 (particularly, the displacement in the rotation direction) can be suppressed.

  The interposed member is a member interposed between the strength member 5 and the retaining screw 13. In the present embodiment, a cylindrical metal sleeve 15 is used as the intervening member. By arranging the intervening member (metal sleeve 15) between the tensile strength member 5 and the retaining screw 13 as in the present embodiment, compared with a case where the screw tip of the retaining screw 13 is directly contacted with the tensile strength member 5. Thus, the area for pressing the tensile strength member 5 can be widened, and a strong pulling force can be realized.

  By the way, when the strength member 5 is a glass fiber reinforced plastic (GRP), the strength member 5 may be damaged if a strong force is applied locally to the strength member 5. On the other hand, if the strength member 5 is tightened via the interposition member as in the present embodiment, the area for pressing the strength member 5 can be increased, and a strong force is locally applied to the strength member 5. Therefore, breakage of the strength member 5 can be suppressed.

  The metal sleeve 15 is a cylindrical member into which the strength member 5 can be inserted. The metal sleeve 15 is formed in a C-shaped cross section, and is configured to be elastically deformable when a force is applied from above and below. The metal sleeve 15 is inserted in advance into the strength member hole 11B. When the strength member 5 is inserted into the strength member hole 11 </ b> B, the strength member 5 is inserted into the cylindrical metal sleeve 15. A pair of retaining screws 13 are arranged so as to sandwich the metal sleeve 15 from above and below. When the anchoring screw 13 is tightened, the screw tip of the anchoring screw 13 presses the metal sleeve 15 and the metal sleeve 15 is deformed, and the inner wall surface of the metal sleeve 15 tightens the tensile strength member 5, whereby the optical cable 1 Is retained on the clamp member 10 via the tensile strength member 5. Since the inner wall surface of the cylindrical metal sleeve 15 is a curved surface (cylindrical surface) curved along the outer surface of the strength member 5, the contact area between the interposed member and the strength member 5 (the area pressing the strength member 5). ) Can be widened, so that a particularly strong retention force can be realized.

  In the present embodiment, before the fastening screw 13 is tightened, a gap is formed between the screw tip of the fastening screw 13 and the metal sleeve 15 (see FIG. 8A). In addition, a slight gap is also formed between the metal sleeve 15 and the strength member 5 (to enable the strength member 5 to be inserted into the metal sleeve 15). Therefore, when the worker tightens the retaining screw 13, first, as a first step, the screw tip of the retaining screw 13 comes into contact with the metal sleeve 15, and the user feels resistance to the tightening force. In the first stage (the stage where the resistance is felt, the stage where the tip of the retaining screw 13 comes into contact with the metal sleeve 15), the strength member 5 has not yet been pressed from the metal sleeve 15, and the strength member 5 is retained. Therefore, as the second stage, the operator further tightens the retaining screw 13 from the first stage, elastically deforms the metal sleeve 15, and presses the strength member 5 (see FIG. 8B). In the present embodiment, a stable retaining force can be obtained by setting the tightening amount (rotation amount) of the retaining screw 13 in the second stage after the first stage to a constant amount (for example, half a rotation). In other words, a gap is formed between the screw tip of the retaining screw 13 and the metal sleeve 15 in advance, and a gap is formed between the metal sleeve 15 and the strength member 5, so that a stable retaining force can be easily obtained. Structure. In addition, since the retaining screw 13 can be prevented from being excessively tightened, breakage of the strength member 5 can be suppressed.

<About the holder 60>
FIG. 9A is a perspective view of the holder 60. FIG. 9B is an exploded view of the holder 60.

  The holder 60 is a jig for holding the clamp member 10 to which the optical cable 1 is attached. The holder 60 is used, for example, as a jig for setting the clamp member 10 on a processing tool (for example, a stripper, a cutter, or the like) for pre-processing the end of the optical fiber 3. The holder 60 is used as a jig for setting the clamp member 10 on the slider 90 (see FIG. 5A) when inserting the optical fiber 3 into the connector unit 20.

  The holder 60 has a holding member 70 and a spacer member 80. The holding member 70 is movable in the front-rear direction with respect to the spacer member 80 (see FIGS. 4B and 4C), and is rotatable around the rotation shaft 73 (see FIG. 4D).

  The holding member 70 is a member for holding the clamp member 10. The holding member 70 has a housing 71, a key projection 72, a rotating shaft 73, a guide 74, and a claw 75.

  The accommodation section 71 is a part for accommodating the clamp member 10. The accommodation section 71 is configured in a U-shaped cross section, and has a pair of side walls and a bottom wall connecting the pair of side walls. The holding section 71 is formed with a holding section 71A for holding the clamp member 10. The inner wall surface of the grip portion 71A is formed so as to conform to the outer peripheral surface of the clamp member 10, and is configured to allow some elastic deformation. By the gripping portion 71A gripping the clamp member 10, the clamp member 10 is prevented from coming off the holding member 70 upward.

  The key protrusion 72 is a portion that protrudes inward from the side wall of the housing 71. The key projection 72 is configured to fit into the key groove 11F of the clamp member 10, and regulates the posture of the clamp member 10 when the clamp member 10 is accommodated in the holder 60 (specifically, the holding member 70).

  The rotation shaft 73 is a portion that becomes a rotation center of the spacer member 80 with respect to the holding member 70. The rotation shaft 73 is configured to protrude outward in the left-right direction from the side wall of the holding member 70, and is inserted into the elongated hole 82 </ b> A of the spacer member 80. Since the rotating shaft 73 is guided in the front-rear direction by the elongated hole 82A of the spacer member 80, the rotation shaft 73 also has a function of guiding the holding member 70 in the front-rear direction with respect to the spacer member 80.

  The guide part 74 is a part for guiding the holder 60 in the front-back direction along the slider 90. The guide portion 74 is formed in a groove shape along the front-rear direction on the bottom surface of the holding member 70.

  The claw portion 75 is a portion (engaging portion) that engages with the connector unit 20. By the engagement of the claw portion 75 with the connector unit 20, the positioning of the holding member 70 and the connector unit 20 in the front-rear direction is performed, whereby the clamp member 10 and the connector unit 20 held by the holding member 70 are aligned. Is performed in the front-rear direction. In the present embodiment, the claw portion 75 is configured to be hooked on the front side flange portion 25A of the connector unit 20 (specifically, the connector unit housing 25), but the caught portion of the claw portion 75 is limited to the front side flange portion 25A. It is not something that can be done. For example, a groove may be formed on the side surface of the connector unit 20 so that the claw 75 is hooked on the groove. As shown in FIG. 5B, the hook 75 is hooked on the connector unit 20 (specifically, the front flange 25A), thereby inserting the optical fiber 3 having a predetermined length into the connector unit 20 (specifically, the mechanical splice 23). This can be urged to the operator, whereby the optical fiber 3 can be reliably butted against the end face of the built-in fiber (not shown) of the connector unit 20. In addition, since the claw portion 75 is hooked on the connector unit 20, the state in which the end faces of the optical fibers 3 abut against each other can be maintained as shown in FIG. 5D.

  The claw portion 75 is formed at the tip (front end) of the arm portion 76 protruding forward from the front end of the housing portion 71. The holding member 70 is provided with a pair of arm portions 76, and each of the pair of arm portions 76 is formed such that a claw portion 75 protrudes inward from each of the ends. The pair of claws 75 and the pair of arms 76 are arranged to face each other in the left-right direction. When the hook 75 is hooked on the connector unit 20, the rear part of the connector unit 20 (specifically, the connector unit housing 25) enters inside the pair of arm parts 76. The arm portion 76 is a portion that extends in the front-rear direction, and also has a function of guiding the holding member 70 in the front-rear direction with respect to the spacer member 80.

  The spacer member 80 is a member that adjusts the position of the clamp member 10 with respect to a processing tool (for example, a stripper, a cutter, or the like) that performs pretreatment of the end of the optical fiber 3. The spacer member 80 has a spacer portion 81 and an outer frame portion 82.

  The spacer part 81 is a part for keeping the interval between the processing tool and the clamp member 10 at a predetermined length. The spacer portion 81 has an abutment surface 81A, a fiber groove 81B, a claw accommodating portion 81C, and a regulating portion 81D.

  The abutting surface 81A is a surface for abutting the front end surface of the clamp member 10. As shown in FIG. 4C, the holding member 70 is moved to the front side with respect to the spacer member 80 (or the spacer member 80 is moved to the rear side with respect to the holding member 70), and the front end face of the clamp member 10 is moved. By abutting against the abutting surface 81A of the spacer portion 81, the position of the clamp member 10 with respect to the holder 60 is adjusted. A predetermined length is set between the abutting surface 81A and the front end surface of the spacer member 80, whereby the stripper removes the coating from a predetermined position of the optical fiber 3 extending from the front side of the clamp member 10. It can be removed, and the cutter can cut the optical fiber 3 extending from the front side of the clamp member 10 at a predetermined position.

  The fiber groove 81B is a groove-shaped portion provided on the upper surface of the spacer portion 81. When the clamp member 10 is set on the holder 60, the optical fiber 3 extending from the front side of the clamp member 10 is disposed on the fiber groove 81B (see FIGS. 4B and 4C).

  The nail accommodating portion 81C is a portion for accommodating the nail portion 75 of the holding member 70. The claw accommodating portion 81C is formed along the front-rear direction so as to allow the movement of the claw portion 75 (and the arm portion 76) in the front-rear direction. The bottom surface of the claw accommodating portion 81C also has a function as a guide surface for guiding the arm portion 76 of the holding member 70 in the front-rear direction. The nail accommodating portion 81C has a groove 811C and a hole 812C.

  The groove portion 811C is a groove-shaped portion formed at the rear of the claw accommodating portion 81C. The groove portion 811C is an upper open groove-shaped portion, and has a shape that allows vertical movement (specifically, rotational movement about the rotation shaft 73) of the claw portion 75. In the state shown in FIG. 4B, since the claw portion 75 is located in the groove portion 811C of the claw accommodating portion 81C, the rotational movement of the spacer member 80 with respect to the holding member 70 is allowed.

  The hole 812C is a hole-shaped portion formed at the front of the nail accommodating portion 81C. The hole 812 </ b> C is a closed hole on the upper side, and has a shape that restricts the upward movement of the claw 75. In the state shown in FIG. 4C, since the claw portion 75 is inserted into the hole 812C of the claw accommodating portion 81C, the upward movement of the claw portion 75 is restricted by the hole 812C. The rotational movement of the spacer member 80 is restricted.

  The restricting portion 81D is a portion that prevents the clamp member 10 from falling off. The restricting portion 81D is a portion that protrudes rearward from an upper portion of the abutting surface 81A. When the front end surface of the clamp member 10 abuts against the abutment surface 81A of the spacer member 80, the restricting portion 81D is disposed above the front portion of the clamp member 10, thereby preventing the clamp member 10 from coming off upward. You. The amount of protrusion of the restricting portion 81D (the amount of protrusion from the abutting surface 81A) is set shorter than the length in which the spacer member 80 can move in the front-rear direction with respect to the holding member 70. In other words, the amount of protrusion of the restricting portion 81D is determined until the front end surface of the clamp member 10 abuts against the abutment surface 81A of the spacer member 80 after the clamp member 10 is mounted on the holding member 70 (see FIG. 4B). 4C) is set to be shorter than the amount of movement of the holding member 70 and the spacer member 80 during this period.

  The outer frame portion 82 is a frame-shaped member that covers the side surface of the holding member 70. The outer frame portion 82 includes a pair of side plates, and the holding member 70 is disposed between the pair of side plates. The surface of the side plate constituting the outer frame portion 82 is a surface parallel to the front-rear direction, whereby the relative movement of the holding member 70 and the spacer member 80 in the front-rear direction and the rotation about the rotation shaft 73 are set. Movement is allowed. An elongated hole 82 </ b> A is formed in the outer frame portion 82. The rotating shaft 73 of the holding member 70 is inserted into the elongated hole 82A. The long hole 82 </ b> A is a hole that extends long in the front-rear direction, so that the relative movement of the holding member 70 and the spacer member 80 in the front-rear direction is allowed. The elongated hole 82A also has a function of guiding the rotation shaft 73 of the holding member 70 along the front-rear direction.

<About the boot unit 40>
FIG. 10A is a sectional view of the boot unit 40. FIG. 10B is an enlarged view of a region indicated by a dotted line in FIG. 10A and is an explanatory diagram of a state of the boot 44 when the tightening member 46 is tightened.

  As described above, the boot unit 40 includes the rear housing 42, the boot 44, and the fastening member 46. A cable insertion hole is formed in the boot 44, and the optical cable 1 is inserted into the cable insertion hole. The rear housing 42 and the fastening member 46 are made of a relatively hard material (for example, plastic or metal), while the boot 44 is made of a relatively soft material (for example, Rubber). The fastening member 46 is arranged so as to cover the rear part of the rear housing 42 and the front part of the boot 44 from outside.

  A receiving portion 44 </ b> A is formed at the front of the boot 44. The receiving portion 44 </ b> A is a portion that receives a force from the fastening member 46. Here, the receiving portion 44A is formed as a tapered portion inclined so that the outer shape becomes larger toward the front side. Thereby, the receiving portion 44A can receive a forward force and an inward force from the fastening member 46 (see the arrow in FIG. 10B).

  On the rear side of the fastening member 46, a pressing portion 46B is formed. The pressing portion 46B is a portion that presses the receiving portion 44A of the boot 44. Here, the pressing portion 46B has an inner wall surface inclined so that the inner diameter becomes smaller toward the rear side. However, the shape of the pressing portion 46B is not limited to this as long as the pressing portion 46B can press the receiving portion 44A of the boot 44 when the fastening member 46 is fastened to the rear housing 42 by screwing.

  As shown in FIG. 10A, a receiving portion 44A of the boot 44 is disposed between the rear housing 42 and the pressing portion 46B of the fastening member 46. When the fastening member 46 is screwed to the rear housing 42, the pressing portion 46B of the fastening member 46 moves toward the rear housing 42, and the pressing portion 46B of the fastening member 46 is moved as shown in FIG. 10B. The receiving portion 44A of the boot 44 is pressed. In other words, when the fastening member 46 is screwed to the rear housing 42, the receiving portion 44A of the boot 44 is sandwiched between the rear housing 42 and the pressing portion 46B of the fastening member 46, and the receiving portion 44A of the boot 44 is Receives the force from the pressing portion 46B. In the present embodiment, the receiving portion 44A of the boot 44 receives a force from the pressing portion 46B toward the front and a force toward the inside (the lower side of FIG. 10B, the side of the optical cable 1).

  The rear end face of the rear housing 42 and the front end face of the boot 44 face each other. If water enters through a gap between the rear end surface of the rear housing 42 and the front end surface of the boot 44, it may cause a failure of the optical connector 100. Therefore, in the present embodiment, when the fastening member 46 is screwed to the rear housing 42, the gap between the rear end surface of the rear housing 42 and the front end surface of the boot 44 is narrowed. That is, in this embodiment, when the fastening member 46 is screwed to the rear housing 42, the rear end surface of the rear housing 42 and the front end surface of the boot 44 come into close contact with each other. Specifically, when the fastening member 46 is screwed to the rear housing 42, the pressing portion 46B of the fastening member 46 pushes the receiving portion 44A of the boot 44 to the front side (the side of the rear housing 42) as shown in FIG. 10B. ), So that the front end face of the boot 44 is deformed toward the rear end face of the rear housing 42. Thereby, water infiltration from the gap between the rear end surface of the rear housing 42 and the front end surface of the boot 44 can be suppressed.

  Further, if water enters through a gap between the optical cable insertion hole of the boot 44 and the optical cable 1, it causes a failure of the optical connector 100. Thus, in the present embodiment, when the fastening member 46 is screwed to the rear housing 42, the gap between the optical cable insertion hole of the boot 44 and the optical cable 1 is narrowed. That is, when the fastening member 46 is screwed to the rear housing 42, the pressing portion 46B of the fastening member 46 presses the receiving portion 44A of the boot 44 inward (toward the optical cable 1), as shown in FIG. 10B. The inner wall surface of the optical cable insertion hole of the boot 44 is configured to deform toward the optical cable 1. Thereby, the inner wall surface of the optical cable insertion hole of the boot 44 and the outer surface of the optical cable 1 are in close contact with each other, and it is possible to prevent water from flowing from a gap between the optical cable insertion hole of the boot 44 and the optical cable 1.

<Summary>
The above-described optical connector 100 is an optical connector attached to the end of the optical cable 1, and is fastened to the rear housing 42 while covering at least a part of the rear housing 42 (housing), the boot 44, and the boot 44. And a fastening member 46. In the present embodiment, when the fastening member 46 is fastened to the rear housing 42, the boot 44 is deformed by pressing the boot 44 from the fastening member 46, and a gap between the rear housing 42 and the boot 44 is formed. Is narrowed. Thereby, it is possible to suppress inundation from a gap near the boot 44.

  In the present embodiment, when the fastening member 46 is fastened to the rear housing 42, the boot 44 is deformed by the pressing of the boot 44 from the fastening member 46, and the gap between the boot 44 and the optical cable 1 is changed. Is narrowed. Thereby, it is possible to suppress inundation from a gap near the boot 44.

  Further, in the present embodiment, the boot 44 has a receiving portion 44A formed in a tapered shape. When the fastening member 46 is fastened to the rear housing 42, the receiving portion 44A is moved rearward from the fastening member 46. By being pressed in the direction toward the side housing 42, the gap between the rear housing 42 and the boot 44 is reduced, and the receiving portion 44A is pressed in the direction toward the optical cable 1 from the fastening member 46. The gap between the boot 44 and the optical cable 1 is reduced. Thereby, inundation from two gaps can be suppressed.

=== Another embodiment ===
FIG. 11A is a cross-sectional view of a boot unit 40 according to the second embodiment. 11B is an enlarged view of a region indicated by a dotted line in FIG. 11A and is an explanatory diagram of a state of the boot 44 when the fastening member 46 is tightened.

  In the above-described first embodiment, the receiving portion 44A of the boot 44 is formed in a tapered shape so that the outer shape becomes larger toward the front side. On the other hand, in the second embodiment, the receiving portion 44A of the boot 44 is formed in a flange shape protruding outward. Thereby, the receiving portion 44A can receive a forward force from the fastening member 46 (see the arrow in FIG. 10B).

  In the first embodiment described above, the pressing portion 46B of the fastening member 46 has an inner wall surface that is inclined such that the inner diameter becomes smaller toward the rear side. On the other hand, in the second embodiment, the pressing portion 46B of the fastening member 46 has a step surface protruding inward.

  Also in the second embodiment, as shown in FIG. 11A, the receiving portion 44A of the boot 44 is disposed between the rear housing 42 and the pressing portion 46B of the fastening member 46. When the fastening member 46 is screwed to the rear housing 42, the pressing portion 46B of the fastening member 46 moves toward the rear housing 42, and the pressing portion 46B of the fastening member 46 is moved as shown in FIG. 11B. The receiving portion 44A of the boot 44 is pressed. In other words, when the fastening member 46 is screwed to the rear housing 42, the receiving portion 44A of the boot 44 is sandwiched between the rear housing 42 and the pressing portion 46B of the fastening member 46, and the receiving portion 44A of the boot 44 is Receives the force from the pressing portion 46B.

  Also in the second embodiment, the optical connector 100 is an optical connector attached to the end of the optical cable 1 as in the first embodiment, and includes a rear housing 42 (housing), a boot 44, and a boot 44. A fastening member 46 that is fastened to the rear housing 42 while covering at least a part thereof. Also in the second embodiment, when the fastening member 46 is fastened to the rear housing 42, the boot 44 is deformed by the pressing of the boot 44 from the fastening member 46, and the space between the rear housing 42 and the boot 44 is changed. Is narrowed. Thereby, it is possible to suppress inundation from a gap near the boot 44.

  Note that the second embodiment has a structure in which the gap between the boot 44 and the optical cable 1 is less likely to be narrowed even when the fastening member 46 is screwed to the rear housing 42 as compared with the first embodiment. However, if the cable insertion hole of the boot 44 is configured to be slightly smaller than the outer shape of the optical cable 1 and the optical cable 1 is inserted into the cable insertion hole like an interference fit, the clearance between the boot 44 and the optical cable 1 can be reduced. This is preferable because water infiltration can be suppressed.

=== Others ===
The above embodiments are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. The present invention can be changed and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof.

1 optical cable, 2 tube cable, 3 optical fiber,
5 strength member, 7 jacket,
10 clamp member, 11 main body,
11A Fiber insertion hole, 11B Tensile strength hole,
11C screw hole, 11D engagement hole,
11E rear flange, 11F keyway, 11G protrusion,
13 Screw for retention,
15 metal sleeve (intervening member), 16 intervening member,
20 connector units, 21 ferrules,
23 mechanical splice, 25 connector unit housing,
25A front flange, 25B protrusion,
27 insertion member, 27A wedge,
30 coupling unit, 31 rotating member,
33 front housing, 33A male thread,
35 application mechanism, 35A movable housing, 35B spring,
40 boot unit, 42 rear housing (outer housing),
42A female thread, 42B male thread,
44 boots, 44A receiving part,
46 fastening member, 46A female screw part, 46B pressing part,
51 inner housing, 51A flange, 52 outer housing,
60 holder, 70 holding member,
71 accommodation section, 71A grip section,
72 key projection, 73 rotation axis,
74 guide part, 75 claw part, 76 arm part,
80 spacer member, 81 spacer part,
81A butting surface, 81B fiber groove,
81C claw receiving part, 811C groove part, 812C hole part,
81D regulation part, 82 outer frame part, 82A long hole,
90 slider, 100 optical connector

Claims (1)

An optical connector attached to an end of an optical cable,
A housing,
Boots for protecting the optical cable,
A fastening member that is fastened to the housing while covering at least a part of the boot,
The boot has a receiving portion formed in a flange shape,
When the fastening member is fastened to the housing, the receiving portion of the boot is pressed in a direction from the fastening member toward the housing, so that the end face of the housing and the boot are surrounded by the optical cable . An optical connector , wherein an end face is in close contact with the end face of the housing and the end face of the boot is waterproofed .

Images