JP2008116602A - Fixed type right-angle bend connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector in which the direction of a boot can be set and fixed in a right-angle direction with respect to a stop ring while preventing deformation of the boot. <P>SOLUTION: The connector includes: a ferrule 2 to which a secondary coated optical fiber of an optical cable P is inserted and fixed and which holds a rear end flange 22; a stop ring 5 for supporting the rear end of a spring 4 that is in contact with the rear end of the flange 22 and energizes the ferrule 2 forward; a plug frame 3 for covering the above members; and a boot 8 to be coupled to the stop ring 5. The connector includes a right-angle coupling cylinder 10 between the boot 8 and the stop ring 5 so as to place the boot 8 in a right-angle direction with respect to the stop ring 5. The connector includes a knob 9 to be attached to the plug frame 3, the knob having a guide projection 9a for connection adaptor, in one side of the knob and having a notch portion 17 formed by notching from the edge of one open end of the knob 9 to the guide projection 9a side or to one side face opposite to the guide projection 9a, so that the right-angle portion of the right-angle coupling cylinder 10 can be inserted and positioned. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fixed right-angle bending connector that is connected to an optical outlet adapter or the like installed on an indoor wall surface in order to connect various optical communication devices.

  In recent years, FTTH (fiber to the home) has progressed, and an optical outlet has been installed in a room. Therefore, conventionally, as disclosed in Patent Document 1, a plurality of optical outlets are attached to an outlet box provided on a wall surface in the room, and an external light such as an optical fiber cord is connected to a connection adapter held in the optical outlet. There has been proposed a technique of an outlet part for connecting and inserting a connector plug perpendicular to a wall surface.

  However, since the conventional external optical connector plug is inserted and connected perpendicularly to the wall surface, the external optical connector plug itself protrudes vertically from the wall surface. For this reason, the external optical connector plug becomes an obstacle, and an accident such as a peripheral device hitting it and being damaged is expected.

Therefore, it is necessary to take some measures such as using a so-called bending connector in which the boot is bent and deformed at a right angle and this tip is attached and fixed to the end of the stop ring of the optical connector plug. ing. At this time, a guide protrusion that can be inserted into the key hole of the connection adapter is formed on the knob piece side of the optical connector plug.
JP 2005-106937 A

  However, in the past, once the boot is attached to the end of the stop ring of the bending connector, when changing the mounting direction of the boot, the boot is once pulled out of the stop ring, and then the boot is mounted so as to be in a predetermined direction. Must be reattached to the stop ring. For this reason, the work is time consuming and time consuming.

  In addition, since the conventional bending connector has a guide projection that can be inserted into the key hole of the connection adapter on one side of the knob, it is impossible to change the direction of the bending connector while the boot is mounted on the stop ring. In addition, when changing the direction of each bending connector in this way, there is a problem that the optical fiber cord on the boot side is pulled, which may adversely affect the optical fiber core wire attached to the center hole of the ferrule. .

  Therefore, the present invention has been devised in view of the conventional circumstances as described above, and the boot can be disposed and fixed in a direction perpendicular to the stop ring without deforming the boot. In addition, even if the boot-side optical fiber cord is pulled in such a boot arrangement state, the optical fiber cord in the right-angle connecting tubular member is not pulled, and the optical fiber cord extends from the boot. An object of the present invention is to provide a fixed right-angle bending connector that can be easily changed in one direction with a single touch.

  In order to solve the above-described problems, an optical fiber core of an optical cable is inserted and fixed, and a ferrule whose flange is held at the rear end, and a rear end of a spring that abuts the flange rear end and biases the ferrule forward A fixed right-angle bend connector comprising a stop ring for supporting each of the members, a plug frame covering each of the members, and a boot connected to the stop ring, the boot being oriented in a direction perpendicular to the stop ring. A right-angled connecting tubular member is interposed between the boot and the stop ring so as to be arranged in the manner described above.

  A knob that is attached to the plug frame and that is formed on one side with a guide protrusion that can be inserted into the key hole of the connection adapter is provided. From one end opening edge of the knob, either the guide protrusion side or the opposite side of the guide protrusion A right-angled portion of a right-angled connecting cylinder is inserted and arranged in a notch formed on one side.

  The right angle connecting cylinder is connected to the stop ring at one end, and at the other end via a caulking base, a caulking seat for fixing the kevlar, an caulking ring for fixing the optical cable sheath to the caulking seat, and a boot attached to the caulking ring Each is attached.

  The right-angled connecting cylinder is formed by two half members, and both half members are engaged and integrated with each other by patching stopping means.

  The right-angle connecting tubular member is formed by forming a bending space inside so as to allow the optical cable inserted therein to bend in the right-angle direction.

  According to the present invention, the boot can be arranged and fixed in a direction perpendicular to the stop ring without deforming the boot, and the optical fiber cord on the boot side can be fixed in such a boot arrangement state. Even if it is pulled, the optical fiber cord in the right-angled connecting cylinder is not pulled, and the installation change of the direction of the extension of the optical fiber cord from the boot can be easily and quickly performed with one touch.

  In other words, since the right-angled connecting cylinder is interposed between the boot and the stop ring so that the boot is arranged in a direction perpendicular to the stop ring, the direction of the boot can be easily set in the direction perpendicular to the stop ring. Can be placed.

  Also provided with a knob formed on one side of a guide projection that is attached to the plug frame and can be inserted into the key hole of the connection adapter, from one end opening edge of the knob, on the side opposite to the guide projection side or the guide projection Since the right-angled part of the right-angled connecting cylinder material is inserted into the notch part that is notched to one of the two sides, two knobs with different notch-forming positions can be selected arbitrarily according to the connection installation conditions By doing so, it is possible to easily change the extension direction of the optical cord from the boot so as to be either the upper or lower direction.

  The right angle connecting cylinder is connected to the stop ring at one end, and at the other end via a caulking base, a caulking seat for fixing the kevlar, an caulking ring for fixing the optical cable sheath to the caulking seat, and a boot attached to the caulking ring Since each is attached, the orientation of the boot can be surely arranged and fixed in the direction perpendicular to the stop ring with a simple configuration. In addition, even if the optical fiber cord on the boot side is pulled, the optical cord in the right-angle connecting tubular member is not pulled, and therefore, the optical fiber core wire attached to the center hole of the ferrule is not adversely affected. Furthermore, since the optical cable with the Kevlar and the sheath exposed is enclosed in the right angle connecting cylinder, the optical cable itself can be protected from the outside.

  The right-angled connecting cylinder is formed by two half members, and both half members are engaged and integrated with each other by the patching-fastening means. Therefore, the right-angle connecting cylinders to the stop ring and the caulking base respectively. Can be easily assembled or removed.

  Since the right angle connecting tubular material has a bending space formed therein so as to allow the optical cable inserted therein to bend in the right angle direction, the inner surface of the right angle connecting tubular material does not damage the optical cable.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Reference numeral 1 shown in the drawing is a fixed right-angled bending connector that connects to an optical outlet adapter Q built in an outlet box M installed on a wall surface in the room to connect various optical communication devices (see FIG. 6). ).

  As shown in FIG. 1 or FIG. 2, the fixed-type right-angle bending connector 1 includes a ferrule 2 in which a 9-core optical fiber is inserted and fixed, and a flange 22 is press-fitted and held at the rear end, and a rear end of the flange 22 A stop ring 5 that supports the rear end of the spring 4 that abuts and biases the ferrule 2 forward; a plug ferrule 3 that covers these members; and a right-angle connecting cylinder 10 that is connected to the stop ring 5 at one end opening side; A caulking base 11 fitted inside the other end opening side of the right-angled connecting cylinder 10, a caulking seat 6 for fixing the kevlar P1 which is a tensile strength line of the optical cable P to the caulking base 11, and a synthetic covering the outer side of the kevlar P1 of the optical cable P A caulking ring 7 for fixing the sheath P2 which is a resin outer shell to the caulking seat 6, a boot 8 attached to the caulking ring 7, the plug frame 3 and the spring It is generally composed of a knob 9 for is covered on the outside of Ppuringu 5.

  The ferrule 2 fixes the optical fiber core wire by bonding the tip of the optical fiber core wire with an adhesive or the like after insertion. The ferrule 2 is protected by being covered with the plug frame 3.

  The spring 4 is formed of a coil spring and is disposed so as to be sandwiched between the flange 22 and the stop ring 5, so that the rear end thereof is supported by the stop ring 5. By supporting the rear end of the stop ring 5 in this manner, the spring 4 acts to constantly urge the ferrule 2 forward.

  A spring 4 and a front portion of a stop ring 5 are inserted into the plug frame 3. In this case, a convex portion 5 a is formed on the outer surface of the front portion of the stop ring 5, and this convex portion 5 a serves as a guide when the stop ring 5 is inserted into the plug frame 3.

  The right angle connecting tubular member 10 is formed by two half members 10a and 10b. The opening sides of these half members 10a and 10b are matched with each other, and are engaged and integrated by, for example, the patching stop means 12. . As specific patching means 12, as shown in FIGS. 3 and 4, a fitting protrusion 12a that protrudes from the side surface of one half member 10a and has a rectangular fitting hole 12b in the center, Corresponding to the fitting protrusion 12a, the other half member 10b protrudes from the side surface and is inserted into a groove 12c having a rectangular protrusion-shaped locking part 12d at the center, and the locking hole 12b is engaged with the locking part 12d. Are integrated by fitting them together.

  At this time, as shown in FIG. 5, the fitting projection 12a and the groove portion 12c are formed opposite to each other half member 10a, and the groove portion 12c is formed on the other half member 10b so as to be able to correspond to these. And the fitting protrusion 12a are formed to face each other. Of course, in addition to the patching-stopping means 12, other mechanisms may be adopted as a configuration for engaging and integrating the two half members 10a and 10b.

  As shown in FIG. 1B or FIG. 2B, an annular engagement convex portion 14 is formed at the rear portion of the stop ring 5, and the portion near the one end side of the cylinder is bent at a right angle. An annular engagement recess 13 formed on the inner peripheral edge of the open end on the short side of the right-angled connecting cylinder 10 is fitted into the engagement protrusion 14 so that the rear portion of the stop ring 5 The right angle connecting cylinder 10 is connected and fixed.

  An annular engagement recess 16 is formed inside the opening end on the longitudinal side of the right-angle connecting cylinder 10, and the engagement protrusion protruding from the cylindrical caulking base 11 is formed in the end engagement recess 16. The caulking base 6 is fixed by fitting the caulking base 11, and the caulking seat 6 and the caulking ring 7 are both disposed in the reduced diameter portion of the caulking base 11. The caulking seat 6 and the caulking ring 7 hold the Kevlar P1 and the sheath P2 of the optical cable P with respect to the caulking base 11, respectively.

  That is, as shown in FIG. 1 (b) or FIG. 2 (b), the caulking seat 6 has a large-diameter front cylindrical portion 6a and a small-diameter rear cylindrical portion 6b connected via a substantially central step portion 6c. The front cylindrical portion 6a is fitted to the outer periphery of the rear end reduced diameter portion of the caulking base 11 together with the Kevlar P1 inside the sheath P2 where the optical cable P is cut. In addition, the sheath P2 is fixed by caulking the caulking ring 7 from the outside after the cutting end of the sheath P2 is put on the rear cylinder portion 6b. The wide opening side of the boot 8 holding the optical cable P is fitted to the outer periphery of the caulking ring 7.

  Further, the plug frame 3 is formed in a round structure, and a pair of guide portions (not shown) corresponding to the key holes at the vertically symmetrical positions formed on the knob 9 are provided at the vertically symmetrical positions of the plug frame 3. Is formed. When the guide 9 is mounted on the plug frame 3, the guide portions have different widths so that the guide portions are inserted and inserted in one direction into the key holes at the vertically symmetrical positions formed on the tab 9. Is formed.

  Further, on one side of the knob 9, a guide projection 9a is formed which can be inserted into the key hole of the connection adapter for guiding the optical outlet adapter Q so as to enable connection from one direction. A substantially rectangular cutout 17 is formed on one side of the guide projection 9a or on the opposite side of the guide projection 9a from the edge of the opening of the knob 9 toward the inside. A portion of the material 10 bent at a right angle is inserted and arranged in the notch 17. FIG. 7A shows the knob 9 provided with a notch 17 on the guide projection 9a side, and FIG. 7B shows the knob 9 provided with a notch 17 on the side opposite to the guide projection 9a. It is.

  Therefore, by arbitrarily selecting two knobs 9 having different positions for forming the notch 17 with respect to the guide projection 9a according to the connection installation conditions to the optical outlet adapter Q, the direction of the extension of the cord portion of the optical cable P from the boot 8 can be changed. It can be changed so as to be either up or down (see FIG. 1 or FIG. 2).

  Further, as shown in FIG. 1 (b) or FIG. 2 (b), the tube of the right angle connecting tube member 10 is wide enough to allow the optical cable P inserted therein to bend in the right angle direction. A K-shaped bending space S is formed.

  FIG. 9 shows an example of the use of a fixed right angle bending connector, where M is an outlet box connected to the optical branching box B via a flexible pipe 18, and Q is attached to the front plate of the outlet box M. Optical outlet adapter.

  The optical outlet adapter Q is connected to the optical branching box B via the optical cable P at the rear end. On the other hand, the fixed right-angle bending connector 1 connected to the personal computer R via the optical cable P at the front end is detachably connected.

  Next, an example of assembly and use of the best mode configured as described above will be described. First, the boot 8 is inserted in advance from the cut end of the optical cable P. Then, after the sheath P2 and the Kevlar P1 are exposed from the cut end of the optical cable P, the cut end of the sheath P2 is placed on the rear cylindrical portion 6b of the caulking seat 6, and the caulking ring 7 is caulked from the outside. Fix it.

  Then, the boot 8 is moved to the cut end portion side of the optical cable P so as to be fitted on the outer periphery of the caulking ring 7, and at the same time, the front cylindrical portion 6a of the caulking seat 6 is caulked together with the Kevlar P1 expanded from the cut end portion of the sheath P2. The base 11 is fitted to the outer periphery of the rear reduced diameter portion.

  Thereafter, the caulking base 11 is made to fit between the opening sides of both half members 10a, 10b of the right-angled connecting cylinder 10 formed by the two half members 10a, 10b so as to be sandwiched from both sides, and patching means 12 is engaged and integrated. At this time, the caulking base 11 and the right angle connecting cylinder 10 are integrally connected and fixed by fitting the engaging recess 16 of the right angle connecting cylinder 10 to the engaging protrusion 15 of the caulking base 11. . Thus, the optical cable P from which the sheath P2 and the Kevlar P1 have been peeled is inserted into the bending space S along the right-angle direction by the right-angle connecting tubular member 10 (FIG. 1B or FIG. 2). b)).

  The tip of the optical fiber core a is inserted into the ferrule 2 and bonded with an adhesive or the like, so that the optical fiber core a is fixed. Then, the stop ring 5 is mounted on the ferrule 2, and the engagement concave portion 13 of the right-angle connecting cylinder 10 is fitted to the engagement convex portion 14 of the stop ring 5, so that the right-angle connection is made to the rear portion of the stop ring 5. The cylinder member 10 is integrally connected and fixed.

  Further, the engaging recesses 13 and 16 of the right-angled connecting tubular member 10 with respect to the engaging convex portion 14 of the stop ring 5 and the engaging convex portion 15 of the caulking base 11 are opposite to each other as shown in FIGS. Are formed with flat portions 13a and 16a, respectively. Further, the outer periphery of the stop ring 5 and the caulking base 11 fitted to the right angle connecting cylinder member 10 are also configured in the same shape, so that the function of determining the position (direction) at the time of fitting and the rotation stopper can be achieved.

  Then, the spring 4 is inserted from behind the flange 22 of the ferrule 2, and the plug frame 3 and the stop ring 5 are inserted and arranged at predetermined positions. At this time, the convex portion 5 a provided above the stop ring 5 serves as an insertion guide for the plug frame 3.

  At this time, the spring 4 is disposed so as to be sandwiched between the flange 22 and the stop ring 5, and acts to urge the ferrule 2 forward with respect to the stop ring 5.

  Finally, the knob 9 is put on the outside of the plug frame 3 and the stop ring 5. At this time, the plug frame 3 is inserted and inserted in one direction with respect to the key hole at the vertically symmetrical position formed in the knob 9.

  Thus, as shown in FIG. 1, FIG. 2, FIG. 7 (a), and FIG. 7 (b), two knobs 9 having different positions for forming the notches 17 with respect to the guide projection 9a are arbitrarily selected according to the connection installation conditions. .

  For example, when connecting the fixed right-angle bending connector 1 from the personal computer R to the counterpart terminal of the optical outlet adapter Q built in the outlet box M installed on the wall surface of the room, FIG. As shown in the figure, when the personal computer R is arranged below the optical outlet adapter Q, a knob 9 having a notch 17 formed on the side opposite to the guide projection 9a shown in FIG. Is attached to the plug frame 3 so that a right-angled portion of the right-angle connecting cylinder 10 is inserted and disposed in the notch 17.

  On the other hand, as shown in FIG. 9B, when the personal computer R is disposed above the optical outlet adapter Q, a notch 17 is formed on the guide projection 9a side shown in FIG. The knob 9 is attached to the plug frame 3 so that the portion of the right-angle connecting tubular member 10 bent at a right angle is inserted into the notch 17. In this way, the extension direction of the optical cable P from the boot 8 can be appropriately changed so as to be either upward or downward, and the optical outlet adapter Q can be installed at any location such as the lower side or upper side of the wall surface or the ceiling, The external fixed right-angle bending connector 1 itself connected to the optical outlet adapter Q does not become an obstacle to peripheral devices.

BRIEF DESCRIPTION OF THE DRAWINGS It shows an example of the fixed type right angle bending connector (for optical cable downward extension) in the best form for implementing this invention, (a) is a front view, (b) is an AA arrow view of (a). Sectional drawing and (c) are rear views. Similarly, it shows an example of a fixed-type right-angle bending connector (for optical cable upward extension), (a) is a front view, (b) is a cross-sectional view taken along line BB in (a), and (c) is a rear view. is there. Similarly, an example of one half member of a right-angled connecting cylinder is shown, (a) is a front view, (b) is a plan view seen from the open side, and (c) is a rear view. Similarly, an example of the other half member of the right-angled connecting cylinder is shown, (a) is a front view, (b) is a plan view seen from the open side, and (c) is a rear view. It is a BB arrow sectional drawing of Drawing 3 similarly. Similarly, it is CC sectional view taken on the line of FIG. Similarly, two examples of the knob are shown, (a) is a plan view of the knob provided with a notch on the guide protrusion side, and (b) is a bottom view of the knob provided with a notch on the side opposite to the guide protrusion. . It is sectional drawing which shows the state which matches the half members of a right angle connection cylinder material similarly. Similarly, it shows an example of the usage state of the fixed type right angle bending connector, (a) is a partially cutaway sectional view showing the usage state when the personal computer is arranged below the optical outlet adapter, (b) It is a partially cutaway sectional view showing a use state in the case where the personal computer is arranged on the upper side of the optical outlet adapter.

Explanation of symbols

P Optical cable P1 Kevlar P2 Sheath Q Optical outlet adapter R PC S Bending space M Outlet box a Optical fiber core wire 1 Fixed right angle bending connector 2 Ferrule 3 Plug frame 4 Spring 5 Stop ring 5a Convex part 6 Caulking seat 6a Front cylinder part 6b Rear Side cylinder portion 6c Stepped portion 7 Caulking ring 8 Boot 9 Knob 9a Guide projection 10 Right angle connecting cylinder material 10a, 10b Half body member 11 Caulking base 12 Patching stop means 12a Fitting projection 12b Fitting hole 12c Groove portion 12d Locking portion 13 Engagement Joint recess 14 Engagement protrusion 15 Engagement protrusion 16 Engagement recess 17 Notch 18 Flexible pipe 22 Flange

Claims (5)

  An optical fiber core of an optical cable is inserted and fixed, a ferrule whose flange is held at the rear end, a stop ring that supports the rear end of a spring that abuts the rear end of the flange and biases the ferrule forward, A fixed right-angle bending connector having a plug frame covering each member and a boot connected to the stop ring, wherein the boot and the stop are arranged so as to be oriented in a direction perpendicular to the stop ring. A fixed right-angle bending connector, characterized in that a right-angle connecting cylinder is interposed between the ring and the ring.   A knob that is attached to the plug frame and that is formed on one side with a guide protrusion that can be inserted into the key hole of the connection adapter is provided. From one end opening edge of the knob, either the guide protrusion side or the opposite side of the guide protrusion 2. A fixed right angle bending connector according to claim 1, wherein a right angle portion of a right angle connecting cylinder member is inserted and disposed in a notch portion formed on one side surface.   The right angle connecting cylinder is connected to the stop ring at one end, and at the other end via a caulking base, a caulking seat for fixing the kevlar, an caulking ring for fixing the optical cable sheath to the caulking seat, and a boot attached to the caulking ring The fixed right angle bending connector according to claim 1 or 2, wherein each is attached.   The fixed right angle bending connector according to any one of claims 1 to 3, wherein the right-angle connecting tubular member is formed by two half members, and the two half members are engaged and integrated by patching means.   The fixed right-angled bending connector according to any one of claims 1 to 4, wherein the right-angle connecting tubular member has a bending space formed therein so as to allow bending of the inserted optical cable in a right angle direction.

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