JP2009276493A - Optical connector plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized multiple optical connector plug with which a release lever can be easily operated without any special tool even during high-density packaging. <P>SOLUTION: The optical connector plug by a multiple type is constituted such that the optical adapter formed via partition disposed in a module of a plurality of branch structures is insertable and removable into/from respective insertion sections. A plug body 1 has a release lever 11 provided with a locking piece 12 for locking to the adapter before backward on one surface in a longitudinal direction of the plug body 1 and a release piece 11a at a rear end, and a slider 13 mounted movably in a regulation region in an axial direction of the plug body 1 via holder sections 19a, 19b vertically halved to incorporate a plurality of plug bodies 1. The slider 13 has a plurality of cam sections 13a pressably engaging the release piece 11a of each release lever 11 of the plurality of the plug bodies 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical connector plug with a release lever that is used when connecting an optical fiber, and more particularly to a multiple-type optical connector plug with improved operability for attachment to and removal from an adapter.

  Conventionally, this type of optical connector plug is integrally provided with a latch for engaging with and releasing from the adapter on the outer peripheral surface of the plug housing. The latch is inclined and extended so as to gradually move away from the outer surface of the plug housing from the front end portion to the rear end portion of the plug housing. When this optical connector plug is attached to an adapter, a latch slightly protrudes from the rear end of the adapter. When the optical connector plug is removed from the adapter, the latch is pushed down directly with the fingertip to release the engagement.

Also, the optical connector plug is provided with a separate latch release member engaged with the rear end of the latch on the body frame side, and the latch is indirectly pushed down via this latch release member to engage the adapter. It may be canceled.
nothing special

  In recent years, since high-density mounting of an optical connector is required, a small-sized optical connector plug has emerged in which the latch release member releases the latch engagement with the adapter when the optical connector plug is removed from the adapter. However, because of the small size, it becomes difficult to operate the latch release member, and there is a situation where the optical connector plug cannot be removed without using a tool.

  That is, as shown in the prior art described above, the latch of the optical connector plug slightly protruding from the rear end of the adapter is directly pushed down with the fingertip to release the engagement, or indirectly through the latch release member. Since the engagement must be released by pushing down the latch, the operability is particularly poor in high-density mounting.

  Therefore, the present invention has been devised in view of the conventional circumstances as described above, and is a small size capable of easily operating the release lever without using a special tool even during high-density mounting. An object of the present invention is to provide a multiple optical connector plug.

  In order to solve the above-described problems, in the present invention, in a multiple-type optical connector plug that can be inserted into and removed from each insertion portion of an optical adapter formed through a partition wall, A release lever formed on one surface from the front to the rear, having a locking piece at the approximate center for engaging with the adapter, and a release piece at the rear end, and a holder in which a plurality of plug bodies are incorporated And a plurality of cam portions that are slidably engaged with release pieces of the release levers of the plurality of plug bodies. It is characterized by comprising.

  The release lever is displaced downward by the guide of the adapter together with the locking piece when the plug body is attached to the adapter so that the locking piece and the adapter can be engaged. Is moved in the removal direction, and the release piece of the release lever is pushed down by the cam part of the slider. After the engagement between the engagement piece and the adapter is released, the movement is restricted by the stopper, and the slider is removed from the adapter. At the same time, the plug body and the release lever return to the initial positions by the elastic force of the release lever.

  The slider movement restriction range is set by the length of the long slot for sliding formed on the upper surface of the holder portion so that the leg portion protruding from the lower surface of the slider is inserted and held slidable back and forth. ing.

  On the upper surface of the rear end of the slider, a convex operation portion is provided for gripping during operation.

  The operation portion of the slider is provided with a hook attachment portion that allows the hook portion of the pull-out tab that allows the slider to be operated on the rear cord side.

  According to the present invention, the release lever can be easily operated without using a tool even during high-density mounting. That is, the present invention provides a multiple-type optical connector plug that can be inserted / removed into / from each insertion portion of a multiple-type optical adapter formed through a partition wall. The plug is formed through a release lever formed with a locking piece in the approximate center for engaging with the adapter and a release piece at the rear end, and a holder portion in which a plurality of plug bodies are incorporated. And a slider mounted so as to be movable within a restriction range in the axial direction of the main body, and the slider has a plurality of cam portions that engage with the release pieces of the release levers of the plurality of plug bodies in a pressable manner. The release lever can be easily operated only by moving the slider in the front-rear direction. Therefore, even if the optical connector plug is small and densely mounted, the operability is remarkably improved.

  The release lever is displaced downward by the guide of the adapter together with the locking piece when the plug body is attached to the adapter so that the locking piece and the adapter can be engaged. Is moved in the removal direction, and the release piece of the release lever is pushed down by the cam part of the slider. After the engagement between the engagement piece and the adapter is released, the movement is restricted by the stopper, and the slider is removed from the adapter. At the same time, the plug body and the release lever are reset to the initial position by the elastic force of the release lever, so the plug body can be easily and securely attached to the adapter with multiple optical connector plugs with small and high-density mounting. Can be made.

  Since the slider movement restriction range is set by the length of the long slot for sliding formed on the upper surface of the holder portion so that the leg portion protruding from the lower surface of the slider is inserted and slidably held back and forth, for example, The position of the rear end edge side of the long slot for sliding is arranged at least rearward from the position where the engagement between the locking piece and the adapter is released by moving the slider, and the slider is moved in the rearward withdrawal direction. At that time, the movement of the slider is restricted by the rear edge of the long slot for sliding, and a force is generated that causes the plug body to act backward, enabling the plug body to be removed from the adapter, and the slider to be attached to the front. When the slider is moved in the direction, the movement of the slider is restricted by the front end edge of the long slot for sliding, and a force that acts on the plug body to the front is generated. To allow for wear. Therefore, the plug body can be smoothly removed with one touch with respect to the adapter of the multiple optical connector plug with small and high-density mounting.

  Since the upper surface of the rear end of the slider is provided with a convex operating portion for gripping during operation, the slider can be smoothly moved in the front-rear direction simply by operating the operating portion with a fingertip. Therefore, the operability of the optical connector plug at the time of small and high density mounting is remarkably improved.

  Since the slider operating portion is provided with a hook mounting portion that enables the hook portion of the pull-out tab that allows the slider to be operated on the rear cord side, the holder can be simply operated with the fingertip. The slider can move smoothly in the backward direction with respect to the part. Therefore, even if it is a multiple type optical connector plug with small and high-density mounting, its operability is remarkably improved.

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

  The present invention, for example, can be inserted into and removed from each insertion portion of a multiple optical adapter formed through a partition wall provided in a module having a multi-branch structure in an optical cabinet for high-density indoor termination. The present invention relates to an optical connector plug of a continuous type.

  As this optical connector plug, for example, two LC-type plug bodies 1 are juxtaposed, and both ends of the plug body 1 are bonded and fixed to both plug bodies 1, and the end surfaces are polished and polished. The two plug bodies 1 are incorporated into a holder portion to be described later to constitute a duplex system. It should be noted that the present invention is not limited to the duplex optical connector plug, and it is needless to say that the optical connector plug may be triple or quadruple or more.

  As shown in FIG. 1, the plug body 1 includes a coupling sleeve 2 made of a relatively high strength plastic, and a ferrule 5 incorporated in the coupling sleeve 2 by a ferrule tube 3 and a ferrule holder 4. And a spring 6 wound around the outer periphery of the ferrule tube 3 and a plastic extender cap 7 fitted to the rear end portion of the coupling sleeve 2 via the spring 6.

  When assembling the plug body 1, as shown in FIG. 1, the ferrule 5, the spring 6, and the extender cap 7 are sequentially inserted into the coupling sleeve 2, and the locking claw of the extender cap 7 is connected to the coupling sleeve 2. The extender cap 7 is fixed to the coupling sleeve 2 by engaging with the locking holes, and the ferrule 5 is urged and held in the coupling sleeve 2 via the spring 6 in the axial direction. Further, behind the extender cap 7, a heat shrinkable tube 9 and a boot 10 each having a crimping holder 8a and a crimping ring 8b for protecting the optical fiber and preventing disconnection due to deformation are attached.

  Further, as shown in FIGS. 1, 8.1, 8.2, 10.1, and 10.2, the outer peripheral surface of the coupling sleeve 2 is engaged with and released from the adapter P. For this purpose, the release lever 11 is provided with a locking piece 12 at substantially the center of both sides in the width direction, and a pair of release pieces 11a projecting laterally with respect to the axial direction at the symmetrical position of the rear end. 2 are integrally provided on the top.

  The release lever 11 is inclined and extended on one surface in the longitudinal direction of the coupling sleeve 2 of the plug body 1 so as to gradually move away from the outer surface of the coupling sleeve 2 from the front end portion toward the rear end portion. The pair of left and right release pieces 11a at the rear end portion is in a complementary relationship with the cam portion 13a so as to come into contact with the cam portion 13a at the left / right symmetrical position inside the opening 13b of the slider 13 as will be described later. Yes.

  Further, the two plug bodies 1 are assembled in the state of being adjacent to each other in holder parts 19a and 19b which are divided into upper and lower parts, and moved on the upper surface of the upper holder part 19a to the restriction range in the axial direction of each plug body 1 The slider 13 is mounted so that it can be mounted.

  That is, the holder portions 19a and 19b are composed of an upper holder portion 19a shown in FIGS. 3 (a) and 3 (b) and a lower holder portion 19b shown in FIGS. 4 (a) and 4 (b). A long slot 14 for sliding that is long in the front-rear direction is provided at the approximate center of the upper surface of the upper holder portion 19a. A pair of front and rear legs 13c projecting from the lower surface of the slider 13 is inserted into the slide long hole 14, and the legs 13c are inserted into a pair of front and rear holes of a rectangular stopper plate 16 attached from below. The slider 13 itself is held so as to be slidable back and forth along the upper surface of the upper holder portion 19a by caulking from the opposite side. At this time, the slider movement restriction range is set by the length in the front-rear direction of the slide long hole 14 formed on the upper surface of the upper holder portion 19a.

  On the other hand, the lower holder portion 19b is provided with a concave portion 20 for accommodating the IC chip 18 on the inner bottom surface, and the IC chip 18 is accommodated in the concave portion 20 so as to be sandwiched and fixed from the upper side by the pressing plate 21. . Further, a pair of left and right plug housing recesses 22 are formed on the upper surface of the pressing plate 21 so that the two plug bodies 1 can be accommodated in an adjacent state.

  In addition, a pair of front and rear arms 23a are provided downward on both the left and right sides of the upper holder portion 19a, and locking claws 23b project from the lower end inside the arm 23a. The holder claws 23b are engaged with the pair of front and rear engaging recesses 23c provided on the holder, whereby the holder parts 19a and 19b are assembled together (see FIG. 1). At this time, a plug-side opening 26 having a pair of left and right rectangular openings is formed on the front side surface by combining the holder parts 19a and 19b with each other. Each coupling sleeve 2 is in a protruding state, and each extender cap 7, caulking holder 8 a, and caulking ring 8 b are latched and held. Further, a boot side opening 27 having a circular opening is formed at the center of the rear surface, and the boot 10 press-fitted into the caulking ring 8b is extended rearward by the boot side opening 27 (FIGS. 1 and 2). 4, see FIG.

  The slider 13 includes a cam portion 13a that engages with a release piece 11a of the release lever 11 of the plug body 1 so as to be pressable. That is, the cam portion 13a is formed as a substantially arcuate tapered surface at the left and right symmetrical positions inside the opening 13b formed on the front end side of the slider 13, and the rear end of the release lever 11 inclined to the cam portion 13a. A pair of left and right release pieces 11a are engaged with each other.

  Specifically, as shown in FIG. 2 (f), FIG. 3 (a), FIG. 3 (b), and FIG. 6, the slider 13 is bulged slightly forward on the front end side of the upper surface. Two adjacent openings 13b formed in a substantially U-shaped arch shape so as to form a space in which the release lever 11 can be displaced in a direction substantially perpendicular to the axial direction on the upper side facing the extender cap 7. Are provided in the front-rear direction, and the left and right symmetrical portions inside the openings 13b are cam portions 13a that are inclined toward the distal end side of the extender cap 7. A pair of left and right release pieces 11a at the inclined rear end of the release lever 11 is engaged with the cam portion 13a.

  As shown in FIGS. 5, 6, 7 (a), and 7 (b), the lower edge of the slider 13 has an L-shaped projecting piece at the left and right ends and the center. The protrusions 24 are provided so as to protrude toward the opening 13b. The protrusions 24 are formed in a substantially U-shaped long groove shape on the upper edge of the front end side of the upper holder part 19a corresponding to the engagement protrusions 24. The engagement protrusion 24 is fitted into the engagement portion 25 from the front side toward the rear side. Thereby, even if a pressing force is applied to the cam portion 13 a by the release lever 11 of the plug main body 1, the slider 13 is prevented from floating upward from the holder portion 19.

  The central upper surface of the slider 13 is a gripping surface portion 15a on which knurled eyes for preventing slip are formed, and the upper surface of the rear end of the slider 13 is provided with a convex operation portion 15 for gripping during operation. Yes. As shown in FIGS. 6, 7A and 7B, the operation unit 15 may be a simple horizontally long projection.

  Alternatively, the operation unit 15 may be an intermediate unit as shown in FIGS. 1, 2 (a), 2 (b), 2 (c), 2 (f), 3 (a), or 3 (b). 9 is formed by a pair of L-shaped hook attachment portions 15b that are paired on the left and right sides through the slits, and the hook attachment portion 15b can operate the slider 13 on the rear cord side as shown in FIG. The hook portion 17a formed through the constricted portion of the strip-shaped pull-out tab 17 may be detachable. By moving the pull-out tab 17 in the pull-out direction, the slider 13 moves in conjunction with the pull-out direction.

  The plug body 1 is attached to the adapter P. At this time, the plug body 1 and the adapter P are engaged by the locking piece 12 of the release lever 11 as shown in FIG. It is supposed to be combined.

  That is, when the plug body 1 is attached to the adapter P, the release lever 11 is pressed by the guide of the plug insertion hole of the adapter P as shown in FIGS. 8.1 (a) to (c). It is mounted while being displaced downward together with the locking piece 12. And the latching piece 12 and the adapter P can be engaged by the latching piece 12 being elastically latched by the level | step difference currently formed in the guide back side of the adapter P toward the upper direction.

  Further, when the adapter P is mounted, it may be operated indirectly via the slider 13 instead of directly operating the plug body 1. In this case, when the slider 13 is moved in the direction of the adapter P, the movement of the slider 13 is restricted by the slide slot 14 of the upper holder portion 19a, so that the plug body 1 can be attached to the adapter P. Is displaced downward by the guide of the adapter P, and the locking piece 12 and the adapter P are engaged. At this time, as shown in FIGS. 8.1 (a) to (c) and FIGS. 8.2 (d) to (f), a guide having the above-mentioned step is provided in the plug insertion hole of the adapter P inward. The locking piece 12 is engaged with the step of the guide.

  On the other hand, when the plug body 1 is removed from the adapter P, the cam portion of the slider 13 is moved when the slider 13 is moved in the removal direction on the upper surface of the upper holder portion 19a as shown in FIGS. Since the release piece 11a of the release lever 11 is pushed down by 13a, the engagement between the locking piece 12 and the adapter P is easily released.

  At this time, as shown in FIGS. 8.1 (a) to (c) and FIGS. 8.2 (d) to (f), the position of the rear end edge side of the slide long hole 14 is changed by the movement of the slider 13. Since the stopper 12 and the adapter P are disengaged at least from the position where the engagement is disengaged, when the slider 13 is moved in the rearward pulling direction, the operation shown in FIG. As shown in (f), the movement of the slider 13 is restricted by the rear end edge of the sliding long hole 14, and a force that causes the plug body 1 to act backward is generated, so that the plug body 1 can be removed from the adapter P. It becomes. At this time, the slider 13 is pulled out of the adapter P and at the same time returns to the initial position by the elastic force of the release lever 11.

  Further, when the slider 13 is moved in the forward mounting direction, as shown in FIGS. 8.1 (a) to (c), the slider 13 is restricted from moving by the front edge of the slide long hole 14, A force that causes the plug body 1 to act forward is generated, and the plug body 1 can be attached to the adapter P.

  Next, an example of the use of the best mode of the present invention / optical connector plug configured as described above will be described in detail.

  When the plug body 1 is attached to the adapter P, as shown in FIGS. 8.1 (a) to (c), the adapter P is attached by holding the operation portion 15 or the gripping surface portion 15a of the slider 13 and the lower holder portion 19b with the fingertips. Move in the direction. At this time, since the movement of the slider 13 is restricted by the front end edge of the long slot 14 for sliding, the plug body 1 can be moved into the adapter P. At the same time, the release lever 11 is displaced downward together with the locking piece 12 by the guide of the adapter P so that the locking piece 12 and the adapter P are engaged, whereby the plug body 1 is mounted on the adapter P.

  On the other hand, when the plug body 1 is removed from the adapter P, the operating portion 15 or the gripping surface portion 15a of the slider 13 is moved in the removal direction with the fingertip, as shown in FIGS. 8.2 (d) to (f). . At this time, the engagement of the locking piece 12 and the adapter P is released by pushing down the release piece 11 a at the rear end of the release lever 11 by the cam portion 13 a of the slider 13.

  Further, when the slider 13 moves in the removal direction, the movement of the slider 13 is restricted by the rear edge of the long slot 14 for sliding, so that the plug body 1 can be removed from the adapter P. As shown in FIG. 8.2 (f), the slider 13 is pulled out of the adapter P, and at the same time, the slider 13 itself returns to the initial position by the elastic force of the release lever 11.

  In order to allow the slider 13 to be operated on the rear cord side, as shown in FIGS. 9 and 10.1 (a), the pull-out tab 17 is attached to the hook mounting portion 15b of the operation portion 15 of the slider 13. A hook portion 17a is attached.

  When the plug body 1 is removed from the adapter P, as shown in FIGS. 10.1 (b) and 10.1 (c), the extraction tab 17 is moved in the removal direction with the fingertip. The slider 13 is interlocked and moved in the same removal direction, and the engagement between the locking piece 12 and the adapter P is released by pushing down the release piece 11a at the rear end of the release lever 11 with the cam portion 13a of the slider 13. The

  As shown in FIG. 10.2 (d), the plug body 1 is removed from the adapter P when the extraction tab 17 is further moved in the removal direction. Then, when the fingertip is released from the pull-out tab 17, the slider 13 itself returns to the initial position by the elastic force of the release lever 11. Finally, as shown in FIG. 10.2 (e), the pull-out tab 17 is moved slightly forward, and then, as shown in FIG. 10.2 (f), the hook mounting portion 15b of the operation portion 15 of the slider 13. Then, the hook portion 17a of the pull-out tab 17 is lifted off.

It is a disassembled perspective view of the optical connector plug in the best form for implementing this invention. Similarly, FIG. 1 shows an example of a slider, (a) is a plan view, (b) is a side view, (c) is a bottom view, (d) is a rear view, (e) is a front view, and (f) is (a) It is AA sectional drawing of). Similarly, a state where the slider is assembled to the upper holder portion is shown, (a) is an exploded sectional view before assembly, and (b) is a sectional view after assembly. Similarly, the state where the IC chip and the pressing plate are assembled into the lower holder part is shown, (a) is an exploded sectional view before assembling, and (b) is a sectional view after assembling. It is a front view which similarly shows the state after the assembly of a slider and an upper and lower holder part. It is a disassembled perspective view of a slider and an upper holder part similarly. Similarly, the operation of the slider will be described. (A) is a side view of the state in which the slider is moved forward with respect to the upper holder part, and (b) is a state in which the slider is moved backward with respect to the upper holder part. FIG. (A) thru | or (c) is explanatory drawing which showed the procedure of attachment of the optical connector plug with respect to an adapter with sectional drawing. (D) thru | or (f) is explanatory drawing which showed the procedure of removal of the optical connector plug with respect to an adapter with sectional drawing. It is a perspective view of the state before mounting | wearing a drawing tab with a slider. (A) thru | or (c) is explanatory drawing which showed the procedure of extraction / removal of the optical connector plug with respect to the adapter using an extraction tab with sectional drawing. Similarly, (d) to (f) in the drawing are explanatory views showing the procedure of removing the optical connector plug from the adapter using the pull-out tab in cross-sectional views.

Explanation of symbols

P Adapter 1 Plug body 2 Coupling sleeve 3 Ferrule tube 4 Ferrule holder 5 Ferrule 6 Spring 7 Extender cap 8a Caulking holder 8b Caulking ring 9 Heat shrinkable tube 10 Boot 11 Release lever 11a Release piece 12 Locking piece 13 Slider 13a Cam part 13b Opening portion 13c Leg portion 14 Sliding long hole 15 Operation portion 15a Grip surface portion 15b Hook mounting portion 16 Stopper plate 17 Pull-out tab 17a Hook portion 18 IC chip 19a Upper holder portion 19b Lower holder portion 20 Recess 21 Holding plate 22 Plug receiving recess 23a Arm 23b Locking claw 23c Locking recess 24 Engaging protrusion 25 Engaged portion 26 Plug side opening 27 Boot side opening

Claims (5)

  In a multi-connector optical connector plug that can be inserted into and removed from each insertion portion of an optical adapter formed through a partition wall, it is formed from one side of the plug body in the longitudinal direction from the front to the rear, and engages with the adapter. It moves to the restriction range in the axial direction of the plug body via a release lever with a locking piece at the center and a release piece at the rear end and a holder part in which multiple plug bodies are incorporated An optical connector plug comprising a plurality of cam portions that are pressably engaged with release pieces of release levers of the plurality of plug bodies.   The release lever is displaced downward by the guide of the adapter together with the locking piece when the plug body is attached to the adapter so that the locking piece and the adapter can be engaged. Is moved in the removal direction, and the release piece of the release lever is pushed down by the cam part of the slider. After the engagement between the engagement piece and the adapter is released, the movement is restricted by the stopper, and the slider is removed from the adapter. 2. The optical connector plug according to claim 1, wherein at the same time, the plug body and the release lever are returned to their initial positions by the elastic force of the release lever.   The slider movement restriction range is set by the length of the long slot for sliding formed on the upper surface of the holder portion so that the leg portion protruding from the lower surface of the slider is inserted and held slidable back and forth. The optical connector plug according to claim 1 or 2.   The optical connector plug according to any one of claims 1 to 3, wherein a convex operation portion for gripping at the time of operation is provided on a rear end upper surface of the slider.   The optical connector plug according to claim 4, wherein the slider operating portion includes a hook mounting portion that allows a hook portion of a pull-out tab that allows the slider to be operated on the rear cord side.

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