JP2010152084A - Optical fiber connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily remove each optical connector plug when optical connector plugs are connected to a plurality of insertion holes of a receptacle without being interfered by adjacent plugs. <P>SOLUTION: The optical fiber connector includes receptacle L which has a plurality of adjacent insertion holes 1a (1b) of optical connector plugs P, and the optical connector plugs P. The receptacle L of the optical fiber connector includes a pushing piece 4 for pushing out the optical connector plug P mounted in each insertion hole 1a (1b) into removing direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is, for example, a so-called finger touch receptacle and optical connector plug provided on the output side of, for example, a 4-branch or 8-branch splitter module or a conversion core module in a high-density indoor termination optical cabinet. The optical fiber connector comprised by these.

  Conventionally, as shown in FIG. 8, an optical connector plug assembled at the tip of an optical fiber is connected to a receptacle L provided with a plurality of adjacent insertion holes for the optical connector plug.

  At this time, one insertion hole 1a and the other insertion hole are arranged so that the optical axes coincide with each other of the receptacle L made of a synthetic resin so that the two optical connector plugs P can be interconnected. 1b.

  As shown in FIG. 8, the receptacle L is formed by integrally forming an upper side wall, left and right side walls, and a bottom wall, and four rectangular cylindrical insertion holes 1a are interposed between the left and right side walls via three partition walls. (1b) is formed, and the connection opening ends of the one insertion hole 1a and the other insertion hole 1b are open in the horizontal direction.

  In addition, a key groove 2 that is a straight groove along the optical axis direction is formed in the center of the upper side wall of each insertion hole 1a (1b) in order to guide and stably maintain the optical connector plug P. ing.

  Incidentally, as is well known, the specific configuration of the optical connector plug P includes, as is well known, a ferrule in which an optical fiber core wire is inserted and fixed, and a flange is press-fitted and held at the rear end, and a ferrule that contacts the rear end of the flange and moves the ferrule forward. A stop ring that supports the rear end of the spring urging the spring, a plug frame that covers these members, a caulking seat that fixes the Kevlar, which is a tensile wire of the optical cable, to the stop ring, and a synthetic resin that covers the outside of the Kevlar of the optical cable A caulking ring that fixes a sheath, which is an outer skin, to the caulking seat, a boot that is mounted on the stop ring, and a knob Q that covers the plug frame and the stop ring are generally configured.

Then, as shown in FIG. 8, the knob Q that forms the outer shell of the optical connector plug P is provided at the center of the upper surface of the upper side wall, for example, at both open ends for connection in each insertion hole 1a (1b) of the receptacle L. Further, a key protrusion 3 having a substantially oval shape in a plane for fitting into the key groove 2 is provided.
nothing special

  However, in the prior art, the knob Q of the optical connector plug P has a substantially flat shape with no projecting operation parts other than the key projections 3, so that the insertion of the receptacle L into each insertion hole 1a (1b) and The operability at the time of removal becomes very inferior. In particular, when the optical receptacle L is attached to a flat surface, the distance between the optical connector plugs P adjacent to the left and right connected to the respective insertion holes 1a (1b) of the receptacle L is very narrow, so that it interferes with each other. It becomes very difficult to perform the operation of removing the optical connector plug P via the knob Q.

  Therefore, the present invention has been devised in view of the conventional circumstances as described above, and even if an optical connector plug is connected to each insertion hole of the receptacle, the neighbors do not interfere with each other. An object of the present invention is to provide an optical fiber connector in which each optical connector plug can be easily pulled out and removed by finger touch.

  In order to solve the above-described problems, the present invention provides an optical fiber connector including a receptacle and an optical connector plug in which insertion holes for a plurality of optical connector plugs are provided adjacent to each other. The receptacle is characterized by being provided with an extruding tool that presses the optical connector plug inserted into each insertion hole and pushes it out in the removal direction.

  Each insertion hole of the receptacle is provided with a key groove for fitting a key protrusion protruding from a knob of the optical connector plug and a lock member for engaging with the optical connector plug when the optical connector plug is inserted. An optical fiber connector comprising: an extrusion tool slidably mounted along a key groove provided in the optical fiber connector, the push tool being an optical connector plug fitted in the key groove. The key projection is pressed, and the engagement of the lock member is released to expand the pressure so that it can be pushed out in the removal direction.

  The pusher is provided with an operating portion having a non-slip formed on the upper surface, and a slider portion that is provided via a root portion engaged with the key groove on the lower surface side of the operating portion, and that presses the key protrusion of the optical connector plug, Comprising.

  One end of the slider portion of the pusher is provided with an engaging recess for engaging the front end portion of the key projection of the optical connector plug.

  According to the present invention, even if an optical connector plug is connected to each insertion hole of a receptacle provided with an insertion hole for a plurality of optical connector plugs adjacent to each other, the adjacent ones do not interfere with each other. The extraction operation can be performed easily.

  In other words, the receptacle is provided with an extrusion tool that presses the optical connector plug mounted in each insertion hole so that the optical connector plug can be pushed out in the removal direction. The plug itself can be easily removed.

  Further, when the optical connector plug is inserted, a key groove for fitting a key protrusion protruding from a knob of the optical connector plug and a lock member for engaging with the optical connector plug are provided in each insertion hole of the receptacle. An optical fiber connector provided with a pusher that is slidable along a keyway provided in the optical fiber connector, and the pusher is fitted in the keyway. The key protrusion of the receptacle is released and the engagement of the lock member is released to release the pressure and can be pushed out in the removal direction. Therefore, the key protrusion for fitting in the key groove provided in each insertion hole of the receptacle is Any optical connector plug that protrudes from the connector can be easily removed with one touch.

  In particular, since the pusher is attached to the receptacle side with a wide surface width corresponding to each insertion hole, each optical connector plug can be smoothly pulled out by one finger operation (finger touch).

  The pusher is provided via an operating portion having a non-slip formed on the entire upper surface and a base portion engaged with the key groove on the lower surface side of the operating portion, and a slider portion that presses the key protrusion of the optical connector plug. Therefore, the key protrusion can be easily pressed by a sliding operation with fingers of the operation unit, and the optical connector plug can be smoothly removed.

  In particular, the engagement of the optical connector plug by the lock member provided in each insertion hole of the receptacle can be released easily and reliably by the slide operation of the pusher, and the subsequent removal of the optical connector plug is smooth. Can be done.

  Since one end of the slider part of the pusher is provided with an engaging recess for engaging a part of the key protrusion of the optical connector plug, axial displacement and lateral blurring when the key protrusion is pressed by the slider part are provided. This can be prevented, and the operability of the pusher itself is improved.

  The best mode for carrying out the optical fiber connector according to the present invention will be described below in detail with reference to the drawings.

This optical fiber connector includes an optical connector plug P and a receptacle L.
The optical connector plug P assembled at the tip of the optical fiber is provided in a high-density optical termination cabinet as shown in FIGS. 1, 2, and 5A to 5C. It is connected to an SC connector constituted by a so-called finger touch type receptacle L in a horizontal arrangement of two or more branches, for example, four branches provided on the output side of the adapter module.

  The receptacle L may have an SC connector having a horizontal arrangement of 8 branches, or a vertical arrangement of 2 branches, 4 branches, 8 branches, or the like.

  At this time, as shown in FIG. 5, optical axes are provided at both ends of the receptacle L made of a synthetic resin molded product so that the two optical connector plugs P on the optical indoor line side and the splitter module side can be interconnected. One insertion hole 1a and the other insertion hole 1b are provided so as to coincide with each other.

  As shown in FIGS. 2, 5A, and 5C, an optical connector plug P having a slightly small simple plug structure is inserted into the other insertion hole 1b. In order to fix the connector plug P, a pair of left and right locking pieces 8 and a pair of upper and lower guide pieces 9 project from the opening side edge of the insertion hole 1b.

  That is, as shown in FIGS. 5A to 5C, the receptacle L is formed by integrally forming an upper side wall, left and right side walls, and a bottom wall, and three partition walls are interposed between the left and right side walls. The four rectangular cylindrical insertion holes 1a (1b) are formed. As described above, four SC connectors are arranged in the center corresponding to each insertion hole 1a (1b).

  The two opening ends for connection in the one insertion hole 1a and the other insertion hole 1b described above may be opened obliquely upward, or both insertion holes 1a, 1b are opened in the horizontal direction. Of course, it may be.

  As a specific configuration of the SC connector of the receptacle L, as shown in FIG. 5 (a), a cylindrical sleeve 6 has a central axis on the optical axis on the joining end wall at the back of the insertion hole 1a. It is made to correspond and protrudes toward the opening end of the insertion hole 1a.

  A lock member 5 is provided so as to oppose a locking piece having a hook-like claw at the tip so as to surround the sleeve 6. The lock member 5 is provided corresponding to each insertion hole 1a, and the partition wall is disposed between adjacent locking pieces. At this time, a cylindrical split sleeve is mounted and held inside the sleeve 6.

  In addition, as shown in FIGS. 1, 2, 4, 5, 5A, 5B, 6A to 6C, and 7A to 7C, each insertion hole At the center of the upper side wall in 1a (1b), in order to guide and stably hold the optical connector plug P, the key projection 3 provided on the knob Q of the optical connector plug P is fitted in the optical axis direction. A key groove 2 that is a straight groove is formed.

  For example, a slide switch knob-type pusher 4 is slidably inserted into the key groove 2, and the optical connector plug P inserted into each insertion hole 1a (1b) is pressed to remove it. It is designed to be able to be pushed out in the direction of removal. Instead of using the knob-type pusher 4, for example, a lever-type pusher 4 may be employed.

  That is, as shown in FIG. 3, the pusher 4 includes an operation portion 4b in which a wavy groove 4a is formed as a non-slip on the entire upper surface, and a constricted neck engaged with the key groove 2 on the lower surface side of the operation portion 4b. A base portion 4c having a shape and a slider portion 4d provided at the lower end via the base portion 4c for pressing the key protrusion 3 of the optical connector plug P are configured. Further, at the tip of the slider portion 4d, there is provided an engagement recess 4e of an arc recess for engaging the arc-projecting front end portion of the key projection 3 of the optical connector plug P.

  Further, a pair of left and right stopper protrusions 4f for preventing the pusher 4 from being removed from the keyway 2 are provided at the rear end of the lower surface of the operation portion 4b shown in FIG. That is, the stopper protrusion 4f is slidably engaged with the pair of left and right groove guide rails 10 formed on the rear side of the key groove 2, and the front end of the guide rail 10 is closed. When the operation portion 4b is slid in the opening end direction of the insertion hole 1a, the stopper projection 4f is locked by the closed portion on the front side of the guide rail 10 so that the pusher 4 deviates from the keyway 2. It is supposed not to.

  On the other hand, as a specific configuration of the optical connector plug P, as shown in FIGS. 6A to 6C and FIGS. 7A to 7C, the optical fiber core wire M is inserted and fixed, and A ferrule F in which the flange FL is press-fitted and held at the end, a stop ring ST that is positioned at the rear end of the flange FL and supports the rear end of the spring SP that biases the ferrule F forward, and a plug frame PF that covers these members A caulking seat K for fixing a kevlar which is a tensile strength line of the optical cable to the stop ring ST, a caulking ring R for fixing a sheath which is a synthetic resin sheath covering the outer side of the optical cable to the caulking seat, and the stop ring ST. The boot is generally composed of a boot B to be mounted and a knob Q that covers the plug frame PF and the stop ring ST. As shown in FIG. 2, engagement grooves 7 for suspending the locking pieces of the lock member 5 are formed on the left and right side surfaces of the plug frame PF.

  Then, at the center of the upper surface of the knob Q constituting the outer shell of the optical connector plug P, for example, as shown in FIGS. 2, 6 (a) to (c), and FIGS. 7 (a) to (c). A key projection 3 having a substantially oval shape in a plane for fitting into the key groove 2 provided at both opening ends for connection in each insertion hole 1 of the receptacle L is projected.

  When connecting the optical connector plug P to the SC connector of the receptacle L, the key projection 3 of the knob Q is fitted into the key groove 2 of the receptacle L as shown in FIGS. 6 (a) and 6 (b). Then, the slide is inserted into the insertion hole 1a. At this time, the pusher 4 is moved backward from the state in which the pusher 4 is slid to the opening end side of the insertion hole 1a by the key projection 3 with the slider portion 4d being pushed.

  Further, the slider 4d is pushed and retracted by the key projection 3, and at the same time, the locking pieces of the lock member 5 are expanded outward by the tips of the knobs Q.

  Then, as shown in FIG. 6C, the ferrule of the optical connector plug P is inserted into the sleeve deep inside the insertion hole 1a of the receptacle L, and the optical fiber core wire is connected to the optical fiber core wire outside the splitter module. At the same time, the lock member 5 is suspended and fixed in the engagement groove of the plug frame. Thus, the optical connector plug P itself is stably held by the receptacle L.

  On the other hand, when the optical connector plug P is removed from the SC connector of the receptacle L, as shown in FIG. 7A, the pusher 4 is slid to the opening end side of the insertion hole 1a with fingers. At this time, the arc protruding tip of the key projection 3 of the optical connector plug P is engaged with the engagement recess 4e at the tip of the slider 4d of the pusher 4, and is pressed toward the opening end side of the insertion hole 1a.

  7B, the pusher 4 is further pressed toward the opening end side of the insertion hole 1a, and at the same time, the engagement of the lock member 5 is released by the engagement groove of the plug frame and free. Thus, as shown in FIG. 7C, the optical connector plug P can be removed from the insertion hole 1a.

  Even if other optical connector plugs P are connected to the insertion holes 1a of the receptacle L in a horizontal arrangement, the pushers 4 are exposed above the key grooves 2, so that other adjacent light beams The connector plug P can be easily removed without disturbing the operation. In addition, the wavy groove 4a provided on the upper surface of the pusher 4 plays a role of preventing slipping.

  In addition, this invention is not limited to the said embodiment, The improvement deformation | transformation etc. in the range which can achieve the objective of this invention are included by this invention.

It is a perspective view which shows the state which attaches an extrusion tool to the receptacle of the optical fiber connector in the best form for implementing this invention. It is a perspective view which shows the state which similarly inserts an optical connector plug in the receptacle of an optical fiber connector. It is the whole perspective view of an extrusion tool similarly. It is a front sectional view of the receptacle of the optical fiber connector in a state where the pusher is also attached. Similarly, it shows an example of a configuration of a receptacle of an optical fiber connector, (a) is a plan view showing a half section, (b) is a front view, (c) is a rear view. (A) thru | or (c) is sectional drawing which showed the state which inserts an optical connector plug in the receptacle of an optical fiber connector one by one. (A) thru | or (c) in the figure are sectional drawings which showed sequentially the state which extracts the optical connector plug from the receptacle of an optical fiber connector. It is a perspective view which shows the state which similarly inserts an optical connector plug in the receptacle of the optical fiber connector in a prior art example.

Explanation of symbols

P Optical connector plug Q Knob L Receptacle M Optical fiber core wire F Ferrule SP Spring ST Stop ring PF Plug frame FL Flange B Boot K Caulking seat R Caulking ring 1a, 1b Insertion hole 2 Key groove 3 Key protrusion 4 Pushing tool 4a Waved groove 4b Operation part 4c Base part 4d Slider part 4e Engaging recess 4f Stopper protrusion 5 Lock member 6 Sleeve 7 Engaging groove 8 Locking piece 9 Guide piece 10 Guide rail

Claims (4)

  An optical fiber connector comprising a receptacle provided with adjacent insertion holes for a plurality of optical connector plugs and an optical connector plug, wherein the optical connector is inserted into each insertion hole in the receptacle of the optical fiber connector An optical fiber connector comprising an extrusion tool that presses a plug so that the plug can be pushed out in a removal direction.   Each insertion hole of the receptacle is provided with a key groove for fitting a key protrusion protruding from a knob of the optical connector plug and a lock member for engaging with the optical connector plug when the optical connector plug is inserted. An optical fiber connector comprising: an extrusion tool slidably mounted along a key groove provided in the optical fiber connector, the push tool being an optical connector plug fitted in the key groove. An optical fiber connector characterized in that the key protrusion is pressed, the engagement of the lock member is released, the pressure is released, and the lock member can be pushed out in the removal direction.   The pusher is provided with an operating portion having a non-slip formed on the upper surface, and a slider portion that is provided via a root portion engaged with the key groove on the lower surface side of the operating portion, and that presses the key protrusion of the optical connector plug, The optical fiber connector according to claim 1 or 2, further comprising:   4. The optical fiber connector according to claim 3, wherein an engagement recess for engaging the front end portion of the key protrusion of the optical connector plug is provided at one end of the slider portion of the pusher.

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