JP2015022222A - Adapter for connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adaptor for an optical connector capable of securely preventing poor fit needing neither surplus cost nor work for preventing erroneous pull-out due to carelessness.SOLUTION: An adaptor for an optical connector 1 includes a housing 2 having openings 6a and 6b and fitting parts 7a and 7b for fitting an SC type optical connector plug 9 inserted from the openings 6a and 6b on both sides of a direction in which the SC type optical connector plug 9 is inserted and withdrawn. A pawl part 3 that engages with a projection 10 provided on the outer surface of the SC type optical connector plug 9 inserted from the opening 6a, elastically deforms to latch the rear end 10a of the projection 10 is provided in at least one fitting part 7a of fitting parts 7a and 7b on both sides.

Description

  The present invention relates to an adapter for an optical connector.

  Patent Document 1 discloses an optical connector error prevention tool that is attached to an SC-type optical connector plug. Patent Document 2 discloses an optical connector misdetachment prevention tool to be attached to an SC2-type optical connector plug for high-density mounting. Patent Document 3 discloses an optical connector locking tool to be attached to an optical connector plug. Patent Document 4 discloses a configuration for visually confirming whether or not the optical connector adapter is in a half-inserted state using a connector that is separate from the main body of the adapter.

JP 2004-226666 A JP 2009-047995 A JP 04-081106 A JP 2012-083519 A

There is an SC type connector (SC) widely used as an adapter for an optical connector. The SC-type connector has excellent detachable operability and can be easily removed when the connector body is pulled. For this reason, if the connector body is inadvertently pulled, it may come off. In order to prevent this, for example, there is a cover-type erroneous removal prevention part for preventing the connector main body from being directly held as disclosed in Patent Documents 1 to 3 above.
In addition, there is a mark for confirmation of pushing in to prevent a fitting failure, or a mechanism disclosed in Patent Document 4 for visually displaying a half-inserted state in which fitting is incomplete.
However, inadvertent removal due to carelessness as described above requires preparation of an erroneous removal prevention component that is a separate component from the SC-type connector, resulting in extra costs. Furthermore, the operation | work which attaches an erroneous extraction prevention part to SC type | mold connector is also required. Further, the mechanism for visually displaying the mark or the half-inserted state is a means for confirming a poor fitting, and is not a means for preventing the poor fitting.

  Therefore, an object of the present invention is to provide an adapter for an optical connector that can reliably prevent poor fitting without requiring extra cost and work for preventing accidental removal due to carelessness.

In the optical connector adapter of the present invention that can solve the above-described problems, the SC-type optical connector plug inserted from the opening is fitted on both sides in the direction in which the SC-type optical connector plug is inserted and removed. A housing having a fitting portion,
A claw portion that engages with a protrusion provided on the outer surface of the SC-type optical connector plug inserted from the opening and elastically deforms to lock the rear end of the protrusion, It is provided in at least one of the fitting portions.

  According to the present invention, it is possible to reliably prevent a fitting failure without requiring extra cost and work for prevention of inadvertent removal due to carelessness.

It is a 6th page figure of the adapter for optical connectors concerning a 1st embodiment of the present invention. It is a top view of an optical connector plug. It is explanatory drawing of the state which engaged the optical connector plug with the adapter for optical connectors of FIG. It is a 6th page figure of the adapter for optical connectors concerning a 2nd embodiment of the present invention. It is explanatory drawing of the state which engaged the optical connector plug with the adapter for optical connectors of FIG.

[Description of Embodiment of Present Invention]
The adapter for optical connectors according to the embodiment of the present invention,
(1) Provided with housings each having an opening and a fitting portion for fitting the SC-type optical connector plug inserted from the opening on both sides in the direction of inserting and removing the SC-type optical connector plug;
A claw portion that engages with a protrusion provided on the outer surface of the SC-type optical connector plug inserted from the opening and elastically deforms to lock the rear end of the protrusion, It is provided in at least one of the fitting portions.
When the optical connector plug is inserted into the fitting portion provided with the claw portion, the rear end of the projection is locked by the claw portion. Thereby, even if the optical connector plug is inadvertently pulled, it is not easily removed. That is, inadvertent removal due to carelessness can be prevented without using a separate member, so that no extra cost or separate member mounting work is required to prevent erroneous removal. Moreover, the optical connector adapter and the optical connector plug can be reliably brought into a fitted state, and poor fitting can be prevented.

(2) The said nail | claw part is each provided in the fitting part of the said both sides.
When the optical connector plugs are respectively inserted into the fitting portions on both sides, the rear ends of the respective protrusions are locked by the respective claw portions. Thereby, the optical connector adapter can be used for connecting the optical connector plugs by fitting the optical connector plugs to the fitting portions on both sides, without using a separate member for the optical connector plug. Inadvertent removal due to carelessness can be prevented. In addition, the optical connector adapter and the optical connector plugs fitted on both sides can be reliably brought into a fitted state, and poor fitting can be prevented.

[Details of the embodiment of the present invention]
An optical connector adapter according to an embodiment of the present invention will be described below with reference to the drawings.
In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.

[First Embodiment]
1A and 1B are six views of an optical connector adapter according to a first embodiment, wherein FIG. 1A is a plan view, FIG. 1B is a bottom view, FIG. 1C is a rear view, and FIG. , (E) is a right side view, and (f) is a front view. FIG. 2 is a plan view of the SC type optical connector plug. 3 is a view of the optical connector adapter of FIG. 1 engaged with the SC type optical connector plug of FIG. 2, wherein (a) is a plan view, (b) is a left side view, and (c) is a view of the left side. It is a rear view.

As shown in FIG. 1, an optical connector adapter (hereinafter also simply referred to as an adapter) 1 according to the first embodiment includes a housing 2, a claw portion 3, an engagement groove 4, and an adapter locking portion 5. , Openings 6a and 6b, fitting portions 7a and 7b, and a flange 8.
The main body portion of the adapter 1 is a substantially rectangular tube-shaped housing 2 having a flange 8 at a substantially central portion. Openings 6a and 6b are provided on both sides of the housing 2 in the axial direction (plug insertion / extraction direction) with the flange 8 interposed therebetween. Further, on both sides in the axial direction of the housing 2, there are provided fitting portions 7a and 7b for fitting SC type optical connector plugs (hereinafter also simply referred to as plugs) 9 inserted from the openings 6a and 6b. .

  One fitting portion 7a is provided with a claw portion 3 between a central engagement groove 3a and slits 3b at both ends. The claw portion 3 can be elastically deformed toward the engagement groove 3a side and the slit 3b side. The claw portion 3 includes a convex portion 3c that protrudes toward the engagement groove 3a. The convex portion 3 c has a tip end side (opening portion 6 a side) that is tapered, and a rear end side that is bent in a direction perpendicular to the axial direction of the housing 2.

  An adapter locking portion 5 and an engaging groove 4 are provided on the outside of the other fitting portion 7b. The protrusion of the SC type optical connector plug 9 can be fitted into the engaging groove 4. The adapter locking portion 5 is used to lock the adapter 1 with, for example, the flange 8 when the adapter 1 is fixed to the side surface of the casing of the apparatus. In addition, when fixing the adapter 1 to a housing | casing, it fixes so that the opening part 6b may face the inside of an apparatus. Thereby, the fitting part 7b can be fitted with an SC-type wiring plug or the like inside the apparatus, and the fitting part 7a can be fitted with a plug 9 as shown in FIG. 2 from the outside of the apparatus.

  The plug 9 shown in FIG. 2 is a normal SC type optical connector plug, and has a protrusion 10 in the vicinity of the center thereof. The rear end (rear end of the plug 9 insertion direction) 10a of the protrusion 10 is formed in a planar shape that is orthogonal to the front-rear direction of insertion / extraction.

Next, the fitting state of the adapter 1 and the plug 9 will be described with reference to FIG. FIG. 3 is an explanatory diagram of a state in which the plug 9 is fitted to the adapter 1.
When the plug 9 is inserted into the fitting portion 7a from the opening 6a and the projection 10 comes into contact with the convex portion 3c of the claw portion 3, the claw portion 3 is elastically deformed toward the slits 3b on both sides to allow the projection 10 to pass. . When the projection 10 gets over the convex portion 3c, the claw portion 3 returns to the central engagement groove 3a side by an elastic reaction force, and as shown in FIG. 3, the projection 10 entering the central engagement groove 3a The rear end 10a is locked by the convex portion 3c.
Further, when the plug 9 is removed from the adapter 1, the plug 9 is pulled out by forcibly elastically deforming the claw portion 3 toward the slits 3 b on both sides using a removal jig or the like. Thereby, the protrusion 10 gets over the convex part 3 c and the plug 9 is removed from the adapter 1.

  As described above, the adapter 1 according to the first embodiment is an adapter that can be fitted to the plug 9 which is a normal SC type optical connector plug with the fitting portion 7a, and the plug 9 is inserted from the opening 6a. In the state shown in FIG. 3, the rear end 10a of the protrusion 10 is locked by the convex portion 3c. Further, it is necessary to use a removal jig or the like at the time of extraction, and even if the plug 9 is pulled carelessly, the plug 9 is not easily removed. That is, it is possible to prevent inadvertent removal without using a separate member, so that no extra cost or a separate member mounting operation is required. Further, the adapter 1 and the plug 9 can be reliably brought into a fitted state, and poor fitting can be prevented. For example, the adapter 1 is useful for an application in which the plug 9 is fixed to a housing of the device and the plug 9 is inserted into and removed from the fitting portion 7a from the outside of the device. Further, since the plug 9 is a normal SC type optical connector plug, the adapter 1 is excellent in versatility.

[Second Embodiment]
Next, an optical connector adapter according to a second embodiment of the present invention will be described.
4A and 4B are six views of an optical connector adapter (hereinafter also simply referred to as an adapter) 11 according to the second embodiment, wherein FIG. 4A is a plan view, FIG. 4B is a bottom view, and FIG. (D) is a left side view, (e) is a right side view, and (f) is a front view. FIG. 5 is a plan view of a state in which two plugs 9 are fitted to the adapter 11 of FIG.

As shown in FIG. 4, the adapter 11 includes a housing 2, claw portions 31 and 32, an engagement groove 4, an adapter locking portion 5, openings 6 a and 6 b, fitting portions 7 a and 7 b, And a flange 8.
The difference between the adapter 11 according to the second embodiment and the adapter 1 according to the first embodiment is that the claw portions 31 and 32 are provided in the fitting portions 7a and 7b on both sides in the axial direction of the housing 2, respectively. The other parts are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted.

  One fitting portion 7a is provided with a claw portion 31 between a central engagement groove 31a and slits 31b at both ends. The claw portion 31 is elastically deformable on the engagement groove 31a side and the slit 31b side. And the nail | claw part 31 is provided with the convex part 31c which protrudes toward the engagement groove | channel 31a. Similarly to the one fitting portion 7a, the other fitting portion 7b is also provided with a claw portion 32 provided with a convex portion 32c, an engaging groove 32a, and a slit 32b.

Next, the fitting state between the adapter 11 and the plug 9 will be described with reference to FIG. FIG. 5 is an explanatory diagram of a state in which the plug 9 is fitted to the fitting portions 7a and 7b on both sides.
When the plug 9 is inserted into the fitting portion 7a from the one opening 6a of the adapter 11 and the protrusion 10 comes into contact with the convex portion 31c of the claw portion 31, the claw portion 31 is elastically deformed toward the slits 31b on both sides. The protrusion 10 is passed. Then, when the projection 10 gets over the convex portion 31c, the claw portion 31 returns to the center engaging groove 31a side by an elastic reaction force, and the rear end 10a of the projection 10 entering the central engaging groove 31a is the convex portion 31c. It is locked with.
When the plug 9 is removed from the one opening 6a of the adapter 11, the claw 31 is forcibly elastically deformed toward the slits 31b on both sides using a removal jig or the like, and the plug 9 is pulled out. . Thereby, the protrusion 10 gets over the convex portion 31 c and the plug 9 is removed from the adapter 1.
The case where the plug 9 is inserted into and removed from the fitting portion 7b from the other opening 6b is the same as the case where the plug 9 is inserted and removed from the one opening 6a.

As described above, in the adapter 11 according to the second embodiment, when the plug 9 is inserted into the fitting portion 7a from the one opening 6a, the rear end 10a of the protrusion 10 is the convex portion 31c in the state shown in FIG. Lock with. Similarly, when the plug 9 is inserted into the fitting portion 7b from the other opening 6b, the rear end 10a of the protrusion 10 is locked by the convex portion 32c. Further, it is necessary to use a removal jig or the like at the time of extraction, and even if the plug 9 is pulled carelessly, the plug 9 is not easily removed.
As a result, the adapter 11 can prevent the inadvertent removal due to carelessness by fitting the plugs 9 to the fitting portions 7a and 7b on both sides and using a separate member for the connected plugs 9 respectively. .
In addition, the adapter 11 and the plug 9 can be reliably brought into a fitted state, and poor fitting can be prevented. Further, since the plug 9 is a normal SC type optical connector plug, the adapter 11 is excellent in versatility.
That is, the adapter 11 according to the second embodiment is useful when the plug 9 can be easily inserted and removed from both sides in the axial direction.

  In addition, in the said 1st Embodiment and 2nd Embodiment, the adapter latching | locking part 5 may be provided in the fitting part 7a side or both sides, and does not need to be provided at all.

1,11 Adapter (Adapter for optical connector)
2 Housing 3, 31, 32 Claw 3a, 31a, 32a Engaging groove 3b, 31b, 32b Slit 3c, 31c, 32c Protruding part 4 Engaging groove 5 Adapter locking part 6a, 6b Opening part 7a, 7b Fitting part 8 Flange 9 Plug (SC type optical connector plug)
10 Protrusion 10a Rear end

Claims (2)

A housing having an opening and a fitting portion for fitting the SC-type optical connector plug inserted from the opening, on both sides of the SC-type optical connector plug;
A claw portion that engages with a protrusion provided on the outer surface of the SC-type optical connector plug inserted from the opening and elastically deforms to lock the rear end of the protrusion, The adapter for optical connectors provided in at least one fitting part.   The adapter for an optical connector according to claim 1, wherein the claw portions are respectively provided in the fitting portions on both sides.

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