JPH02195308A - Optical connector - Google Patents

Abstract

PURPOSE:To allow dealing with connection of many kinds of ferrules by forming an aligning sleeve, connector body and plug part of common parts and changing only the inner peripheral joint surface of the sleeve according to the ferrules. CONSTITUTION:An adapter is formed of the aligning sleeve 4 formed with a 1st joining recess 5 and a 2nd joining recess 6 to tapered holes of the same shape and the sleeve 8 having the tapered outer peripheral joint surface joined to the aligning sleeve 4 and the joint surface adapted to respective kinds of the ferrules 9 is formed on the inner periphery of the sleeve 8. Namely, the plug part 12 and the aligning sleeve 4 are formed commonly with the connector body and the sleeve 8 adapted to the respective ferrules is fitted into the aligning sleeve 4. The ferrule 9 is fitted into the sleeve 8. The connection of the optical fibers having the proper ferrules is possible in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION 0) Industrial Application Field This invention relates to an optical connector for connecting optical fibers having different types of ferrules.

(B) Conventional technology Conventionally, in order to connect optical fibers having different types of ferrules, as shown in FIG. The alignment sleeve has a first joining recess (54) having a shape and a second joining recess (55) having a shape suitable for fitting the second ferrule (53) of the second optical fiber (51'). an adapter (56) having a function, a first plug part (57) for the first ferrule (52), a second plug part (58) for the second ferrule (53), and the adapter (56). An optical connector is used that has a connector main body (59) that accommodates a connector main body (59) and a second plug part (58).

(c) Problems to be solved by the invention However, in the conventional optical connector, it is necessary to prepare a special adapter according to the shape of the ferrule, so a special optical connector that is completely different from a normal optical connector is required. However, there is a drawback that it is expensive, and the first plug part (57) and the second plug part for the first ferrule (52) are
Since the second plug part (58) for the ferrule (53) is required, there is a drawback that the size of the optical connector becomes large.

An object of the present invention is to eliminate the above-mentioned drawbacks of the conventional connectors and provide a compact optical connector that can be used with any type of ferrule and enables high-precision bonding at low cost.

In order to achieve the above object, the present invention provides an alignment sleeve in which a first joint recess and a second joint recess are formed as tapered holes of the same shape, and a taper joined to the alignment sleeve. An optical connector is formed by forming an adapter with a sleeve having a shaped outer periphery joining surface, and forming a joining surface suitable for each type of ferrule on the inner periphery of the sleeve.

[Effect]

According to this invention, the plug part, the alignment sleeve, and the connector body are common, and by fitting a sleeve suitable for each ferrule into the alignment sleeve and fitting the ferrule into the sleeve, an optical fiber having an appropriate ferrule can be connected. Bonding is possible.

For ferrules whose shape matches the joining recess of the alignment sleeve, there is no need to use a sleeve, and the ferrule can be joined directly to the alignment sleeve.

According to the present invention, only the sleeve needs to be prepared for each ferrule, and the plug portion, alignment sleeve, connector body, etc. can be made common parts.

〔Example〕

The details of this invention will be explained based on embodiments with reference to the drawings.

In Figure 1, the optical connector (1) is connected to the connector body (2).
) and an alignment sleeve (4) housed within the hollow portion (3) of the connector body (2).

The alignment sleeve (4) has a first joint recess (5) and a second joint recess (6) formed coaxially and facing each other. The first joining recess (5) and the second joining recess (6) are formed as tapered holes of the same shape into which one type of ferrule can be directly fitted and joined.

The outer periphery of the taper that can be fitted and joined into the joining recesses (5) and (6) of the alignment sleeve (4) is connected to the joining surface (7).
) is provided with a sleeve (8) having a joint recess (
5) and (6) are used when connecting a ferrule with a shape that cannot be directly fitted and joined. The sleeve (8) has a second
As shown in the figure, the joint surface (
A joint surface for fitting and joining 10) is formed on the inner periphery. For example, a sleeve (8) having a cylindrical surface as the joint surface (11) shown in the illustrated example is provided. A plurality of types of sleeves (8) are prepared depending on the shape and dimensions of the ferrule (9). When the ferrule (9) is inserted into the joint surface (ll), the sleeve (8) is inserted into the first joint recess (5) or the second joint recess (6) or both joint recesses (5) of the alignment sleeve (4).
), (6) are fitted and joined.

At both ends of the connector body (2) there are plug parts (12) for ferrules that are directly fitted into the alignment sleeve (4).
) is attached. The plug part (12) is screwed onto the end of the sleeve (8) and is connected to the ferrule (9) via the spring (13).
) of the flange (9a) of the sleeve (8).
a presser tube (16) that presses against the presser tube (15), and the presser tube (16)
The outer cylinder (1) is screwed onto the connector body (2) so as to surround the connector body (2).
7) and the action of a spring (18) that is screwed onto the presser tube (16) and stretched between the flange (16a) of the presser tube (16) and the shoulder (lea) of the outer tube (17). At the bottom presser foot tube (16
) to the outer cylinder (17).

(E) Effects According to this invention, the alignment sleeve, the connector body, and the plug part are made common parts, and only the inner circumferential joint surface of the sleeve is changed depending on the ferrule, thereby making it possible to connect many types of ferrules. , it is possible to reduce the cost and size of the optical connector, use common parts, make the first joint recess and the second joint recess coaxial, and pay attention only to the accuracy of the axis of the inner circumferential joint surface of the sleeve. This enables high-precision joining.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an optical connector according to the present invention, FIG. 2 is a sectional view of a sleeve, FIG. 3 is a front view of FIG. 2, and FIG. 4 is an explanatory sectional view of a conventional optical connector.・・・・・・・・・・・・Optical connector・・・・・・・・・Connex body・・・・・・・
・・・・・・Alignment sleeve・・・・・・・・・・・・1st
Joint recessed part... Second jointed recessed part...
・・・・・・・・・Outer joint surface ・・・・・・・・・・・・Sleeve ・・・・・・・・・ Ferrule ・・・・・・・・・・・・Inner peripheral joint surface・・・・・・・・・Plug part Utility model registration applicant Shinwa Kasei Co., Ltd. (1 idiot)

Claims (1)

[Scope of Claims] An optical connector having an adapter for fitting and joining two ferrules of different types, wherein the adapter includes an alignment sleeve having two joining recesses formed as the same tapered hole, and a joining recess of the alignment sleeve. An optical connector characterized in that it is formed by a tapered outer peripheral joining surface into which a ferrule of one type is fitted and a sleeve having a hole into which one type of ferrule is fitted.