JPH08122570A - Optical connector plug binding mechanism connecting - Google Patents

Abstract

PURPOSE: To easily clean the end race or an optical connector plug to keep a good attaching/detaching performance with an inexpensive and simple structure even at the time when this end face is dirty by spot-welding a stopper having a claw to the plate of an optical connector adapter. CONSTITUTION: AD optical connector adapter 2 is fitted to an optical connector 5 on the enclosure side, and one flat face of a stopper 1 of a U-shaped spring having a claw 1a as a projecting part is spot-welded to a plate 3 on the outer wall of the optical connector adapter 2. The claw 1a of the stopper 1 is pressed by its spring property and is caught by a projection 6a provided in an enclosure 6. By this structure, the force of pressing to the enclosure 6 side is opposed by the optical connector plug 5 fixed to the enclosure 6 side, and the extracting force is opposed by catching the claw 1a of the stopper 1 by the enclosure 6. When the stopper 1 is pushed and the claw 1a is released from the enclosure 6 to pull out the optical connector adapter 2, the end face or the optical connector plug 5 is exposed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber fastening mechanism including an optical connector adapter for relaying an optical connector plug having an optical fiber, and more particularly to mounting a high-density mounting device, an optical component, an electrical component and the like. The present invention relates to an optical connector plug fastening mechanism for connecting to an optical connector plug fixed to the above device when the device is housed in a housing.

[0002]

2. Description of the Related Art For example, a JIS standard F04 type connector which relays an optical signal by opposing plugs adopting push-lock type simple fastening in an adapter fixes an optical fiber to the center of a cylindrical rod-shaped ferrule. Is inserted into a hollow cylindrical alignment sleeve having a precise inner diameter, and the end faces of the ferrules are butted against each other.

This optical connector is also called an SC type connector, and as shown in FIG. 5, a pair of optical connector plugs 101 are fitted and connected from both sides of an SC adapter 102. The optical connector plug 101 is a ferrule 10 attached to one end of an optical fiber 100.
3, the plug housing 104 and the knob 10
5 and the plug housing 104 is a knob 1
It is a structure that can slide in the axial direction of the ferrule 103 inside the inside of 05. The SC adapter 102 fitted with the optical connector plug 101 is composed of a hollow cylindrical alignment sleeve 106 into which the ferrule 103 is inserted, and an insertion hole 107 into which the tip portion of the knob 105 is integrally inserted. The optical connector plug 101 and the SC adapter 102 include the ferrule 103 and the alignment sleeve 106.
Also, the knob 105 and the insertion hole 107 are fitted to each other so as to be coupled. Incidentally, these locks are completed by engaging the locking recesses 109 of the grooves 108 provided on the two opposite side surfaces of the optical connector 101 and the locking portions 111 of the locking pieces 110 of the SC adapter 102. (See Japanese Patent Application No. 1-310680).

When such an optical connector adapter is used for connecting a single-mode optical fiber in particular, both plugs to be connected are connected in a fixed direction to each other,
Even if the core of the optical fiber is decentered with respect to the axis of the ferrule, it generally has a structure in which the connection characteristics are kept constant.

Therefore, in the above optical connector adapter, the projection 112 is formed on one side surface of the optical connector plug 101.
By providing the SC adapter 102 with a groove 113 into which the projection 112 fits, the optical connector plug 101 having a symmetrical surface is fitted into the SC adapter 102 only in a fixed direction.

The above-mentioned SC adapter is used for connection with an optical connector plug fixed to the above-mentioned device when a device for high-density mounting or a device equipped with optical components and electric components is housed in a housing. As a method of fixing it to the housing, a method of screwing the SC adapter 102 to the housing 90 with a bolt 91 and a nut 92 as shown in FIG. 3, and FIG.
The plate 80 attached to the SC adapter 102 as shown in
It was general to fix it by a fitting structure.

[0007]

However, the conventional optical connector adapter has the following problems. With the method of fixing to the housing as shown in FIG. 3 and FIG. 4, the SC adapter 102 cannot be removed unless the housing is disassembled, so that from the outside of the housing (on the side of the optical connector plug 93) to the inside of the housing. The end face of a certain optical connector plug 94 cannot be cleaned.

The end face cleaning of the optical connector plug is indispensable to obtain a good connection performance in the optical connector connection, and the conventional optical connector adapter cannot clean the connector end face inside the housing in a normal state, so that it is detached. There was a risk that the performance would deteriorate as the procedure was repeated.

Therefore, an object of the present invention is to provide a structure in which the optical connector adapter can be easily detached from the housing and to have a structure similar to the conventional one in other performances, in order to solve such a conventional problem. is there.

[0010]

In order to solve the above-mentioned problems, the present invention spot-welds a spring-shaped stopper having a pawl to a plate attached to an existing optical connector adapter, and fixes it to the housing on the housing side. The optical connector plug is fixed and the optical connector adapter is fitted to the optical connector plug.

[0011]

[Function] With this structure, the optical connector plug fixed to the housing side opposes the pushing force to the housing side.
With respect to the pulling-out force, the claw of the stopper catches against the casing and opposes it, and a fixing strength equivalent to that when the conventional optical connector adapter is fixed by the conventionally known method described above is obtained. Further, the end face of the optical connector plug on the housing side is exposed by pushing up the spring-shaped stopper and pulling out the optical connector adapter with the pawl removed from the housing. This allows the optical connector plug on the housing side to be easily cleaned.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a top view (a) and a side view (b) showing a state where the optical connector adapter is fixed to a housing of this embodiment, and FIG. 2 is a top view (a) showing a state where an optical connector adapter is removed from the housing of this embodiment. ) And a side view (b).

In FIG. 1B, an optical connector plug 5 fixed as an optical input or output terminal on the housing side is fixed to a housing 6 by a fixing plate 8, bolts 7 and spacers 5. The optical connector adapter 2 of the present invention is fitted in the optical connector plug 5 on the housing side. Top view (a)
1c, the plate 3 on the outer wall of the optical connector adapter 2 is spot-welded to one flat surface of a U-shaped spring-shaped stopper 1 having a pawl 1a as a protrusion. The pawl 1a of the stopper 1 is pressed by its spring property and is caught by the projection 6a provided on the housing 6. The optical signal is relayed by fitting the outer optical connector plug 4 to the end of the optical adapter 2 that opposes the optical connector plug 5 on the housing side. In this state, when the outer optical connector plug 4 is pushed in, it is opposed by the housing-side optical connector plug 5 fixed to the housing 6, and when the outer optical connector plug 4 is pulled, the pawl 1a of the stopper 1 is mounted on the housing. It catches on the protrusion 6a of the body 6 and opposes it. As a result, the same fixing strength as the method of fixing the optical connector adapter to the housing described in the above-mentioned conventional embodiment can be obtained.

In FIG. 2, by pushing the 1b portion of the stopper 1, the pawl 6a of the stopper 6 is disengaged from the projection 6a of the housing 6, and the optical connector adapter 2 is kept in this state.
By pulling out, the end face of the optical connector plug 5 on the housing side is exposed near the entire surface of the housing. As a result, even if the end surface of the optical connector plug 5 on the housing side becomes dirty and the connection performance deteriorates during repeated attachment and detachment, it can be easily cleaned and the connection performance can be restored.

Although the above-described embodiment provides an embodiment of a single-fiber optical connector adapter, it goes without saying that the same effect can be obtained even when used in a multiple optical connector adapter.

[0016]

As described above, the present invention has an inexpensive and simple structure in which a stopper having a claw is spot-welded to a plate of an existing optical connector adapter, and the optical connector plug on the housing side is repeatedly attached and detached. Even if the end face of the is dirty and the connection performance is deteriorated, it can be easily cleaned, and it is an epoch-making invention that can maintain good attachment / detachment performance.

[Brief description of drawings]

1A and 1B are a top view and a side view in a connected state showing an embodiment of the present invention.

2A and 2B are a top view and a side view in a detached state showing an embodiment of the present invention.

FIG. 3 is a top view showing a case where a conventionally known SC adapter is fixed by screwing.

FIG. 4 is a top view showing a case where a conventionally known SC adapter is fixed by a plate-fitting structure.

FIG. 5 is a perspective view showing a structure of a conventionally known SC adapter.

[Explanation of symbols]

 1 stopper 2 optical connector adapter 4 outer optical connector plug 5 housing side optical connector plug 6 housing 6a projection provided on the housing

Claims (3)

[Claims] 1. A first optical connector plug fixed to the housing as an optical input or optical output terminal, and a second optical connector plug connected to the first optical connector plug.
By pushing the plugs from both sides, they collide internally,
An optical connector adapter which aligns and releasably fixes the optical fibers to each other by abutting connection with each other. The outer wall of the optical connector adapter is engaged with the housing, and the engagement can be arbitrarily released. An optical connector plug fastening mechanism, which is provided with possible projections. 2. The protrusion is a pawl provided on a surface opposite to a U-shaped spring, one surface of which is fixed to an outer wall of the optical connector adapter, and the engagement is achieved by pressing down the spring. The optical connector plug fastening mechanism according to claim 1, wherein the optical connector plug fastening mechanism is detached. 3. The optical connector plug fastening mechanism according to claim 1, wherein the U-shaped spring is spot-welded to the outer wall of the optical connector adapter.