JPH1172656A - Dustproof cap for optical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the infiltration of dust, etc., into plug insertion holes and to stably and surely obtain desired connection loss between connected optical connector plugs by providing a cap body capable of closing the plug insertion holes, elastic pieces for clamping and holding in an optical connector adapter and a knob for detachment operation projecting to the outer side of the optical connector adapter from this cap body. SOLUTION: The optical connector adapter 1 has eight pieces of the plug insertion holes 3 to be inserted with the optical connector plugs. The dustproof cap 10 for the optical connector is integrally molded parts consisting of a synthetic resin, such as polypropylene, over the entire pat. The cap body 11 of a rectangular planar shape is capable of simultaneously closing all of eight pieces of the plug insertion holes 3 which are arranged and formed at one line at the optical connection adapter 1 at one time. The elastic pieces 13a to 13d are inserted to eight pieces of the projectingly disposed plug insertion holes 3 from one side 12 (one surface) of the cap body 11. The knob 15 for the detachment operation is projectingly disposed in the direction opposite to the elastic pieces 13a to 13d from the other surface 14 of the cap body 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust cover for an optical connector.

[0002]

2. Description of the Related Art FIG. 7 shows an optical connector adapter 1.
The optical connector adapter 1 has a plurality of plug insertion holes 3 into which the optical connector plug 2 is inserted (eight in FIG. 7).
They are connected in a row. Optical connector plug 2 is JIS
Optical connector ferrule 4 (so-called MT type optical connector ferrule. Mechanical Trans.
This is a so-called MPO connector in which the ferrule is housed in a plastic housing, and the optical connector ferrules 4 are butt-connected by being inserted into the plug insertion holes 3 from both sides.

[0003]

By the way, in the case of the optical connector adapter 1 described above, the plug insertion hole 3 into which the optical connector plug 2 is not inserted remains open, so that dust or the like easily enters. For this reason, the plug insertion hole 3
When the optical connector plug 2 is inserted into the optical connector ferrule 4, the joining end face 5 of the optical connector ferrule 4 is contaminated by dust or the like in the plug insertion hole 3, and a desired connection loss is obtained between the optical connector ferrules 4, which are butt-connected. There is concern that it will disappear.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problem, and prevents dust and the like from entering a plug insertion hole and reduces a desired connection loss between optical connector plugs connected in the plug insertion hole. Provided is a dustproof cover for an optical connector which can be obtained stably and reliably.

[0005]

SUMMARY OF THE INVENTION According to the present invention, an optical connector adapter having one or a plurality of plug insertion holes into which an optical connector plug is inserted is provided. What is claimed is: 1. A dustproof cover for an optical connector for closing a plug hole, comprising: a lid main body capable of closing the plug insertion hole; And an optical connector adapter, which is clamped and held in the optical connector adapter by inserting the elastic connector, and an optical connector adapter which protrudes from the lid body and closes the plug insertion hole when the elastic piece is inserted into the plug insertion hole. And a knob for detaching operation protruding outside of the optical connector. Further, in the present invention, the lid main body includes a plurality of divided lids which are detachably connected via a separating portion, and each of the divided lids has a plurality of elastic pieces and a knob for detaching operation. It is more preferable to adopt a configuration having the following.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a dustproof cover for an optical connector according to the present invention will be described below with reference to FIGS.
In the figure, the same components as those in FIG. 7 are denoted by the same reference numerals, and the description thereof will be simplified. In FIG. 1, the dustproof cover 10 for an optical connector is an integrally molded product entirely made of a synthetic resin such as polypropylene, and all the eight plug insertion holes 3 arranged and arranged in a line in the optical connector adapter 1. A lid body 11 in the form of a rectangular plate that can be closed at once, and the lid body 1
Elastic pieces 13 a, 13 b, 13 projecting from one side 12 (one surface) of one piece and inserted into the plug insertion hole 3.
c, 13d, and a detachment knob 15 protruding from the other surface 14 of the lid body 11 in a direction opposite to the elastic pieces 13a, 13b, 13c, 13d.

FIGS. 2A and 2B are diagrams showing details of the dust cover 10 for an optical connector, wherein FIG. 2A is a plan view, FIG.
(C) is a side view, (d) is a rear view, (e) is a plan sectional view,
(F) is a sectional view taken along line AA of (e). FIG.
As shown in (a), (d), and (e), the lid main body 11 is formed so as to cross the central portion in the longitudinal direction.
6. Separable lids 17, 18 detachably connected via 6
The split lid 17 has a pair of elastic pieces 13a, 1
3b and a knob 15 for detaching operation, and the other split lid 18 also includes a pair of elastic pieces 13c and 13d and a knob 15. The separating portion 16 is a thin portion formed on the lid main body 11 and can be cut with scissors or a cutter or manually torn. Therefore, as shown in FIG. 3, the split lids 17 and 18 can be easily separated from each other, so that one or two optical connector adapters having four plug insertion holes 3 can be accommodated. .

As shown in FIG. 1, the elastic pieces 13a, 13
b, 13c and 13d are the lid main body 1 at both ends of the arrangement of the plug insertion holes 3 and at the positions corresponding to the two central fours.
It protrudes from 1. A pair of elastic pieces 13a and 13b protruding from the divided lid 17 are provided with two plug insertion holes 3 at one end and the center arranged in the optical connector adapter 1,
Inserted into 3. Each of the plug insertion holes 3, 3 of the optical connector plug 1 is partitioned by partition walls 6, 6. The elastic pieces 13a and 13b are inserted into the plug insertion holes 3 and 3 at the same time, thereby pressing and sandwiching the partition walls 6 from the inside of the plug insertion holes 3 in directions approaching each other. Moreover, when the elastic pieces 13a and 13b are pushed into the plug insertion hole 3 until the lid main body 11 comes into contact with the optical connector plug 1, a plurality of fitting flanges 19 protruding from one side 12 of the lid main body 11 are respectively plugged. It fits into the insertion hole 3. As a result, the divided cover 17 portion of the optical connector dustproof cover 10 is stably mounted at a predetermined position of the optical connector plug 1, and the four plug insertion holes 3 can be closed. In addition, split lid 1
Similarly, the eight portions can be attached to the optical connector plug 1 by inserting the elastic pieces 13c and 13d into the plug insertion holes 3 so that a total of four plug insertion holes 3 can be closed. As a result, one optical connector dustproof cover 10 can close a total of eight plug insertion holes 3.

The fitting flange 19 is a projection having an outer surface shape substantially corresponding to the inner surface shape of the plug insertion hole 3, and the opening of the plug insertion hole 3 is also formed at the side of the optical connector adapter 1. In response to being continuous, the lid body 1
One side 12 has a continuous protruding wall. When the fitting flange 19 is inserted into the plug insertion hole 3, the openings of the plurality of plug insertion holes 3 can be sealed at a time, and dust and the like can be reliably prevented from entering the plug insertion hole 3. . Thereby, when the optical connector plugs 2 are connected to each other in the plug insertion hole 3 opened by detaching the optical connector dustproof cover 10 from the optical connector adapter 1, the optical connector ferrule of each optical connector plug 2 is connected. The inconvenience that dust or the like adheres to the joining end face 5 of 4 and the desired connection loss cannot be obtained can be reliably prevented, and the desired connection loss can be reliably obtained in the connection work.

When the optical connector dustproof cover 10 is attached to the optical connector plug 1 and the plug insertion hole 3 is closed, the knob 15 projects outside the optical connector adapter 1, and the knob 15 is operated. Thereby, the optical connector dustproof cover 10 can be easily detached from the optical connector adapter 1. Note that the knob is not limited to a protruding piece vertically protruding from the other surface 14 of the lid main body 11 as shown in FIGS. 1 and 2. Since the position is not limited to the position shown in FIGS. 1 and 2 as long as it is outside the optical connector adapter 1 when the cover 3 is closed, various shapes such as an extended shape of the lid body 11 can be adopted.

Further, since each of the split lids 17 and 18 is provided with a pair of elastic pieces 13a and 13b or a pair of elastic pieces 13c and 13d and a knob 15, as shown in FIG. Even in the case of division, it is possible to ensure the workability of attaching to and detaching from the optical connector adapter 1 in each of the divided lids 17 and 18. In addition, since the fitting flange 19 also forms a continuous protruding wall at each of the divided lids 17 and 18, a high dustproof effect can be obtained when mounted on the optical connector adapter.

FIGS. 4 to 6 show an optical connector dust cover 20 according to a second embodiment of the present invention. As shown in FIG. 4, the dust cover 20 for an optical connector is applied to the optical connector adapter 7 in which the plug insertion holes 3 are arranged in a different direction as compared with the optical connector adapter 1 shown in FIGS. Is done. That is, in the optical connector adapter 1 shown in FIGS. 1 and 7, a plurality of plug insertion holes 3 having an elliptical cross section are arranged so that their short axes are on the same straight line, but as shown in FIG. In the optical connector adapter 7, a plurality of plug insertion holes 3 are arranged so that the major axis is on the same straight line.

FIGS. 5A and 5B are views showing details of the dustproof cover 20 for an optical connector, wherein FIG. 5A is a plan view, FIG.
(C) is a side view, (d) is a rear view, (e) is a plan sectional view,
(F) is a sectional view taken along line BB of (e). FIG.
As shown in (a) to (f), the dustproof cover 20 for an optical connector is an integrally molded product entirely made of a synthetic resin such as polypropylene, and can close all the plug insertion holes 3 of the optical connector adapter 7. The cover body 21 has a rectangular plate-like lid body 21 having a simple shape.

As shown in FIGS. 5 (a), 5 (b) and 5 (d), one side 22 (one surface) of the lid main body 21 has a plurality ( (8 in the figure) fitting projections 23 and a plurality of elastic pieces 24 to be inserted into the plug insertion holes 3 are projected. Each of the fitting flanges 23 has an independent elliptical shape corresponding to the plug insertion hole 3. As shown in FIG. 4, two elastic pieces 24 are inserted into one plug insertion hole 3, and a pair of elastic pieces 24 inserted into the same plug insertion hole 3 are the same. Project from the inside of the fitting flange 23. Then, the pair of elastic pieces 24 inserted into the same plug insertion hole 3 are respectively pressed against the inner surfaces of the plug insertion holes 3 opposed to each other in the short side direction so as to be clamped and held in the plug insertion holes 3. Has become. Accordingly, when each pair of the elastic pieces 24 is inserted into the plug insertion hole 3 and clamped and held in the plug insertion hole 3, the dustproof lid 20 for an optical connector is mounted on the optical connector adapter 7. At this time, by fitting the fitting flange 23 into the plug insertion hole 3, the opening of the plug insertion hole 3 is sealed by the fitting flange 23, and it is ensured that dust or the like enters the plug insertion hole 3. Can be prevented.

Further, since a knob 26 for detachment is protruded from the other surface 25 of the lid body 21, the dustproof lid 20 for the optical connector attached to the optical connector adapter 7 is operated by operating the knob 26. Can be easily separated. The knob 26 can have various shapes.

At the center of the lid body 21 in the longitudinal direction, a separating portion 27 which can be cut manually is formed, and the two divided lids 28 and 29 are connected via the separating portion 27. Separation unit 27
Is a thin portion formed on the lid main body 21 and can be cut using scissors or a cutter or manually torn.
Therefore, as shown in FIG. 6, the split lids 28 and 29 can be easily separated, and accordingly, can be adapted to one or two optical connector adapters having four plug insertion holes 3. .

The number of plug insertion holes 3 formed in the optical connector adapter is not limited to the eight shown in the first and second embodiments, but can be changed as appropriate such as two, four, six, and the like. Also,
It is needless to say that the number of the fitting flanges 19 and the number of the elastic pieces in the optical connector dustproof lids 10 and 20 are appropriately changed. Further, in the first and second embodiments, the dustproof lids 10 and 20 for the optical connector which can be separated into two divided lids are shown, but a configuration which can be separated into three or more divided lids can be adopted. In addition, various configurations can be adopted as the separation unit. For example, a configuration in which the divided lids can be detached from each other can also be adopted.

[0018]

As described above, according to the dustproof lid for an optical connector of the present invention, a lid body capable of closing a plug insertion hole of an optical connector adapter, and a plurality of projecting projections from one side of the lid body. An elastic piece that is clamped and held in the optical connector adapter by being inserted into the plug insertion hole; and a lid body that protrudes from the lid body and closes the plug insertion hole when the elastic piece is inserted into the plug insertion hole. (A) the plug insertion hole can be efficiently closed, and the intrusion of dust and the like into the plug insertion hole can be prevented. Therefore, when the optical connector plugs are connected to each other in the plug insertion hole, the desired connection loss can be reliably obtained. (B) The elastic piece and the knob provide high workability for attaching and detaching to and from the optical connector adapter. Excellent effects such as are.

According to the second aspect of the present invention, the lid main body is composed of a plurality of divided lids which are detachably connected via a separating portion, and each of the divided lids has a plurality of elastic pieces and a release operation knob. Therefore, it is possible to close the plug insertion hole corresponding to both the optical connector adapter having a large number of plug insertion holes and the optical connector adapter having a smaller number of plug insertion holes, and In addition, there is an excellent effect that the work of attaching and detaching the split connector to and from the optical connector adapter can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a dustproof cover for an optical connector of the present invention.

2A and 2B are diagrams showing details of a configuration of a dustproof cover for an optical connector of FIG. 1, wherein FIG. 2A is a plan view, FIG.
(C) is a side view, (d) is a rear view, (e) is a plan sectional view,
(F) is a sectional view taken along line AA of (e).

FIG. 3 is a perspective view showing a state in which the dustproof cover for an optical connector of FIG. 1 is separated into two divided covers.

FIG. 4 is a perspective view showing a second embodiment of the dustproof cover for an optical connector of the present invention.

5A and 5B are diagrams showing details of the configuration of the dustproof cover for an optical connector of FIG. 2, wherein FIG. 5A is a plan view, FIG.
(C) is a side view, (d) is a rear view, (e) is a plan sectional view,
(F) is a sectional view taken along line BB of (e).

6 is a perspective view showing a state in which the dust cover for optical connector of FIG. 2 is separated into two divided covers.

FIG. 7 is a perspective view showing an optical connector adapter.

[Explanation of symbols]

1: Optical connector adapter, 2: Optical connector plug, 3:
Plug insertion hole, 7: optical connector adapter, 10: dustproof cover for optical connector, 11: lid body, 12: one side (one surface), 13a, 13b, 13c, 13d: elastic piece, 15
... knob, 16 ... separating part, 17 ... split lid, 18 ... split lid, 20 ... dustproof cover for optical connector, 21 ... lid body, 22 ...
One side (one side), 24 elastic pieces, 26 knobs, 27
... Separating section, 28... Split lid, 29.

Claims (2)

[Claims] 1. An optical connector plug (2) is inserted into an optical connector adapter (1, 7) having one or a plurality of plug insertion holes (3) so that the optical connector plug is not inserted. A dust cover for an optical connector for closing the plug insertion hole, wherein the lid body is capable of closing the plug insertion hole.
And a plurality of projecting ones from one side (12, 22) of the lid body.
Or elastic pieces (13a, 13b, 13c, 13d, 24) clamped and held in the optical connector adapter by simultaneously inserting a plurality of plugs into the plurality of plug insertion holes;
Detachment knobs (15, 26) protruding from the lid body and projecting outside the optical connector adapter from the lid body that closes the plug insertion hole when the elastic piece is inserted into the plug insertion hole. A dustproof cover (10, 20) for an optical connector, comprising: 2. A plurality of divided lids (17, 1) to which the lid body is detachably connected via separation portions (16, 27).
2. A dustproof cover for an optical connector according to claim 1, wherein each divided cover includes a plurality of elastic pieces and a knob for detachment operation.