JP2009229476A - Optical connector plug for termination - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical connector plug for termination, wherein the optical plugs for termination can be connected to the respective insertion parts of various modules which compose a multiple branching structure in an optical cabinet for high density indoor termination without any inconvenience, and insertion and pulling out of the respective optical connector plugs for termination are easily performed. <P>SOLUTION: The optical connector plug for termination P has a key projection 3 which is projected from a knob Q to be engaged with a key slot 2 provided at both open ends for connection at the respective insertion parts 1a (1b) of the modules of a plural branching structure in the optical cabinet for high density indoor termination, wherein an insertion and pulling out handling part 4 is integrally formed on the upper face on the rear side of the knob Q corresponding to the upper end of the key projection 3 or the key projection 3. The insertion and pulling out handling part 4 has an upper face having a single or continuous double slight chevron, and wavy graves 4a may be formed on the whole upper face for preventing slip. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical connector plug for termination that is connected to, for example, a 4-branch or 8-branch splitter module, a conversion core module, or the like in a high-density indoor termination optical cabinet.

  Conventionally, an optical connector plug assembled at the end of an optical fiber for termination is split into two or more branches by a splitter module SM provided in a high-density optical cabinet for termination as shown in FIGS. For example, it is connected to an SC connector or the like arranged in a horizontal arrangement such as four branches.

  At this time, so that the two optical connector plugs P for termination can be connected to each other, both ends of the splitter module SM made of a synthetic resin are aligned so that the optical axes coincide with each other, The other insertion portion 1b is provided.

  As shown in FIG. 6, the splitter module SM is formed by integrally forming an upper side wall, left and right side walls, and a bottom wall, and between the left and right side walls, four rectangular cylindrical inserts are interposed via three partition walls. 1a (1b) is formed. In addition, four SC connectors corresponding to each insertion portion 1a (1b) are arranged inside the center, and both open ends for connection in the one insertion portion 1a and the other insertion portion 1b described above are arranged in the horizontal direction. It is open.

  Further, in the center of the upper side wall of each insertion portion 1a (1b), there is a key groove 2 that is a straight groove along the optical axis direction for the purpose of guiding and stably holding the termination optical connector plug P. Each is formed.

  Incidentally, as a specific configuration of the termination optical connector plug P, as is well known, an optical fiber core wire is inserted and fixed, and a flange is press-fitted and held at the rear end, and a flange is in contact with the rear end. A stop ring that supports the rear end of the spring that urges the ferrule forward, a plug frame that covers these members, a caulking seat that fixes a Kevlar that is a tensile strength line of the optical cable to the stop ring, and an outer side of the Kevlar of the optical cable It generally includes a caulking ring that fixes a sheath, which is a covering synthetic resin, to the caulking seat, a boot that is attached to the stop ring, and a knob Q that covers the plug frame and the stop ring.

As shown in FIGS. 5A and 5B, the knob Q is provided at the center of the upper surface of the upper side wall, for example, at both opening ends for connection in the insertion portions 1a (1b) of the splitter module SM. Further, a key protrusion 3 having a substantially vertically long shape for fitting into the key groove 2 is provided.
nothing special

  However, in the prior art, the knob Q has a substantially flat shape with no projecting operation parts other than the key protrusions 3, so that the splitter module SM can be inserted into and removed from the insertion portions 1 a (1 b). The operability is very poor. In particular, when connected to, for example, a 4-branch or 8-branch splitter module SM or conversion core module TM in a high-density indoor termination optical cabinet, it is connected to each insertion portion 1a (1b). Since the terminating optical connector plugs P adjacent to the left and right are obstructing each other, it is very difficult to insert / remove the terminating optical connector plug P via the knob Q.

  Therefore, the present invention has been devised in view of the existing circumstances as described above, and is used for termination in each insertion portion of various modules having a multi-branch structure in a high-density optical termination termination cabinet. It is an object to provide an optical connector plug for termination that can be easily inserted / extracted without being disturbed by each other even if the optical connector plug is connected. And

  In order to solve the above-described problems, in the present invention, a key projection for fitting into a key groove provided in each insertion portion of a module having a multi-branch structure in an optical cabinet for high-density premises termination is provided with a knob. An optical connector plug for termination formed by projecting to the upper end of the key projection or an upper part of the key projection corresponding to the key projection, and an insertion / extraction operation part formed integrally on the upper surface of the knob. To do.

  According to the present invention, even if an optical connector plug for termination is connected to each insertion portion of various modules having a multi-branch structure in a high-density indoor termination optical cabinet, neighbors do not interfere with each other. Each termination optical connector plug P can be inserted and removed easily and quickly.

The best mode for carrying out the optical connector plug for termination according to the present invention will be described below in detail with reference to the drawings.
The optical connector plug P for termination assembled at the end of the optical fiber for termination is a variety of modules provided in a high-density indoor termination optical cabinet as shown in FIGS. For example, the splitter module SM is connected to an SC connector or the like that has a horizontal arrangement of two or more branches, for example, four branches.

  The splitter module SM may be configured to include an SC connector having a horizontal arrangement of, for example, 8 branches, or a vertical arrangement of 2 branches, 4 branches, 8 branches, or the like. In addition to the splitter module SM, the conversion core module TM may be used.

  At this time, as shown in FIG. 2, the optical axes coincide with both ends of the splitter module SM made of synthetic resin so that the two termination optical connector plugs P can be interconnected. One insertion portion 1a and the other insertion portion 1b are provided.

  That is, as shown in FIG. 2, the splitter module SM is formed by integrally forming the upper side wall, the left and right side walls, and the bottom wall, and four rectangular tube-like shapes are interposed between the left and right side walls via three partition walls. An insertion portion 1a (1b) is formed. In addition, four SC connectors are arranged in the center corresponding to the respective insertion portions 1a (1b), and both open ends for connection in the one insertion portion 1a and the other insertion portion 1b described above are obliquely upward. It is open toward. Of course, both the insertion portions 1a and 1b may be opened in the horizontal direction.

  As shown in FIGS. 2 and 3, the center of the upper side wall of each insertion portion 1 a (1 b) is along the optical axis direction for guide and stable holding when the termination optical connector plug P is inserted. A key groove 2 which is a straight groove is formed.

  On the other hand, as a specific configuration of the termination optical connector plug P, as is well known, an optical fiber core wire is inserted and fixed, and a ferrule in which a flange is press-fitted and held at the rear end and a flange rear end abut. A stop ring that supports the rear end of the spring that urges the ferrule forward, a plug frame that covers these members, a caulking seat that fixes a Kevlar that is a tensile strength line of the optical cable to the stop ring, and an outer side of the Kevlar of the optical cable It generally includes a caulking ring that fixes a sheath, which is a covering synthetic resin, to the caulking seat, a boot that is attached to the stop ring, and a knob Q that covers the plug frame and the stop ring.

  Then, at the center of the upper surface of the upper side wall of the knob Q, for example, as shown in FIGS. 1 (a) and 1 (b), the key provided at both opening ends for connection in each insertion portion 1 of the splitter module SM. A key protrusion 3 having a substantially vertically long shape for fitting into the groove 2 is projected, and an insertion / extraction operation portion 4 of a rectangular plate shape having a large surface width is integrally formed at the upper end of the key protrusion 3. It is.

  The insertion / removal insertion operation unit 4 has an upper surface slightly raised, for example, in the form of two front and rear ridges, and an anti-slip wave groove 4a is formed on the entire raised upper surface. The upper surface of the insertion / extraction operation unit 4 may be a single mountain shape or a triple mountain shape.

  When connecting the termination optical connector plug P to the SC connector of the splitter module SM, as shown in FIGS. 3 and 4, the upper surface of the insertion / extraction operation part 4 at the upper end of the key projection 3 of the knob Q is touched with fingers. While holding down, the key protrusion 3 is slidably fitted into the key groove 2 at both open ends for connection in each insertion portion 1a (1b) of the splitter module SM. Therefore, the termination optical connector plug P itself is formed by the wide insertion / extraction operation portion 4 exposed upward through the key protrusion 3 fitted in the key groove 2 on the upper side wall of each insertion portion 1a (1b). Is stably held in the splitter module SM.

  At this time, even if the other termination optical connector plug P is connected in a horizontal arrangement to each insertion portion 1a (1b) of the splitter module SM, the insertion / removal operation portion 4 is located upward via the key protrusion 3. Therefore, it can be easily inserted by the other adjacent termination optical connector plug P without hindering the insertion operation. The same applies when the termination optical connector plug P being connected is removed. In any case, the wavy groove 4a provided on the upper surface of the insertion / extraction operation unit 4 serves as a slip stopper.

  Further, as another example of the insertion / extraction operation unit 4, a single or two front and rear chevron is slightly raised on the rear side of the knob Q corresponding to the key protrusion 3, and the entire upper surface is prevented from slipping. The insertion / extraction operation part 4 formed by forming the corrugated groove 4a may be integrally formed. The insertion / extraction operation unit 4 may be a simple protrusion as long as it can be operated with a fingertip.

  In this case, even if the other termination optical connector plug P is connected in a horizontal arrangement to each insertion portion 1a (1b) of the splitter module SM, the insertion / extraction operation portion 4 is raised upward on the rear side of the knob Q. Therefore, the adjacent optical connector plug P for termination can be easily and quickly inserted and removed without hindering the operation.

An example of the optical connector plug for termination | terminus in the best form for implementing this invention is shown, (a) is a perspective view, (b) is a side view. It is a perspective view which similarly shows an example of a splitter module. It is a perspective view which shows the state which similarly inserts the termination optical connector plug into a splitter module. It is the perspective view of the state which looked at the state which similarly inserts the termination | terminus optical connector plug into a splitter module from the other eyes | visual_axis. The termination | terminus optical connector plug in a prior art example is shown, (a) is a perspective view, (b) is a side view. It is a perspective view which shows the splitter module in a prior art example. It is a perspective view which shows the state which inserts the optical connector plug for termination | terminus in a prior art example into a splitter module. It is the perspective view of the state which looked at the state which inserts the optical connector plug for termination in a prior art example into a splitter module from the other eyes | visual_axis.

Explanation of symbols

P Termination optical connector plug Q Knob SM Splitter module TM Conversion core module 1a, 1b Insertion part 2 Key groove 3 Key protrusion 4 Insertion / extraction operation part 4a Wave-like groove

Claims (1)

  An optical connector plug for termination comprising a key projection for fitting into a key groove provided in each insertion portion of a module having a multi-branch structure in a high-density indoor termination optical cabinet. An optical connector plug for termination is formed by integrally forming an insertion / extraction operation portion on the upper end of the key projection or on the rear upper surface of the knob corresponding to the key projection.

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