JP2000171666A - Connector for optical communication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a connector for optical communication by providing a pin sleeve 1 with a detaining part for preventing rotation by rotary working. SOLUTION: This connector consists of a coupler 5 and the pin sleeve 1 inserted with one end part to the coupler 5. The pin sleeve 1 is provided with the detaining part 2 at its one end. The detaining part 2 has a dislodgment preventive part 4 for the pin sleeve 1 and a co-rotation preventive part 3 offcentered from the center P of the pin sleeve 1. At least the co-rotation preventive part 3 and the dislodgment preventive part 4 are inserted alternately to the coupler 5. The co-rotation preventive part 3 is a hollow groove 13 and penetrates deeper into the pin sleeve 1 from its outer peripheral surface 1a and is offcentered from the center of the pin sleeve 1, thereby forming a ring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector used for connecting optical communication equipment.

[0002]

2. Description of the Related Art When an optical cable is connected between optical communication devices, an optical communication connector (hereinafter abbreviated as a connector) or an optical communication adapter (hereinafter abbreviated as an adapter) is attached to an end of the optical cable. Is connected to the optical communication equipment. This connector has a metal pin sleeve,
In recent years, it has been changed to a method in which a pin sleeve is inserted into a synthetic resin coupler because the metallic sleeve is attached to the metallic coupler with an adhesive. In the case where the pin sleeve is inserted into the coupler, it is necessary to insert the pin sleeve so that the pin sleeve does not rotate or come off. Therefore, the pin sleeve 1 is fixed in advance as shown in FIG. The cutting tool B reciprocates to provide a notch C for stopping rotation on the outer periphery of one end of the pin sleeve 1.

[0003]

The pin sleeve is generally made of expensive zirconia, bronze alloy, or the like.
When cutting the notch for detent on the pin sleeve,
If it is strongly fixed so that it cannot rotate, it will be damaged and it will be defective.In addition, due to the reciprocating motion of the cutting tool, it will be in a non-working state when retreating, and it will take a lot of time to work, and it will be expensive. . Therefore, the present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide a locking portion for stopping rotation on a pin sleeve by a rotating process, thereby enabling optical communication. To provide an inexpensive connector.

[0004]

According to a first aspect of the present invention, there is provided an optical communication connector comprising a coupler and a pin sleeve having one end inserted into the coupler. The locking part has a pin sleeve detachment prevention part and a co-rotation prevention part eccentric from the center of the pin sleeve, and at least the co-rotation prevention part and the separation prevention part are staggered with respect to the coupler. Inserted. Here, the connector is not limited to a connector that connects one circuit to another circuit, but also includes an adapter that connects two parts that are originally not compatible. Here, the coupler is one that inserts and fixes one end of the pin sleeve, and the number of inserts of the pin sleeve is not limited,
A plurality of pin sleeves may be inserted. Here, the co-rotation preventing portion of the locking portion refers to a portion that is eccentric from the center of the pin sleeve, and the detachment preventing portion is closer to the end than the co-rotation preventing portion, and is located in the longitudinal direction of the pin sleeve. Say something that makes it impossible to move.

[0005] The optical communication connector according to the second aspect is the first aspect.
In the optical communication connector of the above, the locking part and the non-locking part continuous with the locking part are inserted into the coupler, and the non-locking part and the co-rotation prevention part of the locking part do not interfere with the coupler. Inserting. Here, the non-locking portion is one end of the pin sleeve, which is located on the center side of the pin sleeve from the locking portion, and the one end of the pin sleeve is the locking portion and the non-locking portion connected to the locking portion. Means the range including the part. The difference between the non-locking portion and the co-rotation prevention portion is that the center of the pin sleeve and the center of the co-rotation prevention portion are different, that is, the center of the co-rotation prevention portion is eccentric with respect to the center of the pin sleeve. Say the state.

[0006] The optical communication connector of claim 3 is claim 1.
In the optical communication connector according to the second aspect, the co-rotation preventing portion is a concave groove, bites into the inside from the outer peripheral surface of the pin sleeve, and is formed eccentrically from the center of the pin sleeve. Here, the concave groove is formed into the inside from the outer surface of the pin sleeve, and may have any shape as long as it forms an annular shape, and may be cut into the entire outer peripheral surface of the pin sleeve. A part may coincide with the outer peripheral surface. Here, the term “eccentrically forming an annular shape” means that the position distant from the center of the pin sleeve is defined as the processing center and the processing center is the center, and a state in which the pin sleeve is offset from the outer peripheral surface.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an optical communication connector according to a first embodiment of the present invention; FIG. It consists of a pin sleeve 1 with one end inserted,
The pin sleeve 1 is provided with a locking portion 2 at one end. The locking portion 2 includes a detachment preventing portion 4 of the pin sleeve 1 and a co-rotation preventing portion 3 eccentric from the center P of the pin sleeve 1. The rotation preventing portion 3 and the separation preventing portion 4 are staggeredly inserted into the coupler 5. The detachment preventing portion 4 is located at one end side of the pin sleeve 1 in the longitudinal direction, and the co-rotation preventing portion 3 is provided.
Is located on the center side of the detachment prevention unit 4.

[0008] The optical communication connector according to the second aspect is the first aspect.
In the optical communication connector, the locking portion 2 and the non-locking portion 11 continuous with the locking portion 2 are inserted into the coupler 5, and the non-locking portion 11 and the co-rotation preventing portion 3 of the locking portion 2 are inserted. Are staggered with respect to the coupler 5. The non-locking portion 11
It is located on the center side of the pin sleeve 1 with respect to the locking portion 2 and is in the range of one end of the pin sleeve 1. The center P of the non-locking portion 11 is different from the center Q of the co-rotation preventing portion 3, that is, the center Q of the co-rotation preventing portion is eccentric with respect to the center P of the non-locking portion 11.

As shown in FIGS. 4 to 6, the optical communication connector according to the third aspect is the optical communication connector according to the first and second aspects, wherein the co-rotation preventing portion 3 is a concave groove 13 and the outer peripheral surface of the pin sleeve 1. The pin sleeve 1 digs into the inside and is eccentric from the center P of the pin sleeve 1 to form an annular shape. The processing means of the concave groove 13 for the pin sleeve 1 holds both ends 1b and 1c of the pin sleeve 1 at eccentric positions away from the center P of the pin sleeve 1 as shown in FIG.
Then, the pin sleeve 1 is rotated about the processing center Q to perform cutting. The shape of the concave groove 13 is not limited as long as the groove 13 can be processed by rotating the pin sleeve 1, and may be provided on the entire outer peripheral surface 1a of the pin sleeve 1 as shown in FIG. A part of 3a may be provided so as to coincide with the outer peripheral surface 1a.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A pin sleeve 1 has a round bar shape and is mainly made of a metal such as zirconia or a bronze alloy. The concave groove 13 is not limited to a square groove, and achieves the object even if it is an inclined groove, a U-shaped groove, a V-shaped groove, etc. as shown in FIG.
The purpose is achieved even with a spiral groove. The coupler 5 is desirably formed of a synthetic resin, but may be formed of zinc die cast. Note that the optical communication connector according to the present invention is not limited to the above-described embodiment. For example, ST connector, ST adapter, FDDI connector, splice switch, SC connector, SC simplex,
It is also applicable to SC duplex, AC / ST duplex adapter, SC duplex connector, SC plastic lip, FC connector, FC adapter, FC / APC connector, SC / APC connector, and the like.

[0011]

Since the optical communication connector according to the present invention has the same structure as described above, the following effects can be obtained. In the optical communication connector according to the first aspect, the co-rotation preventing portion and the detachment preventing portion provided on the pin sleeve are eccentric and are inserted while being staggered in the coupler.

In the optical communication connector according to the second aspect, since the non-locking portion and the co-rotation preventing portion are eccentric and are inserted into the coupler so as to be staggered, the co-rotation of the pin sleeve and prevention of detachment are further improved.

In the optical communication connector according to the third aspect, since the co-rotation preventing portion is an annular groove, the pin sleeve can be efficiently processed while rotating the pin sleeve, and can be provided at a low cost.

[Brief description of the drawings]

FIGS. 1 (a), 1 (b) and 1 (c) are a front view, a side view, and a longitudinal sectional view of an optical communication connector according to the present invention.

FIGS. 2A and 2B are enlarged cross-sectional views of an insert portion.

3 (a) and (b) are a cross-sectional view taken along the line XX and a line YY of FIG.

4 (a), (b), (c), and (d) are front views of main parts of a pin sleeve showing examples of shapes of a locking portion and a detachment preventing portion.

FIGS. 5A and 5B are a front view and a cross-sectional view illustrating a processing example of a locking portion.

FIGS. 6A and 6B are cross-sectional views illustrating examples of eccentricity of a locking portion.

FIGS. 7A and 7B are a front view and a cross-sectional view showing a processing example of a conventional locking portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pin sleeve, 1a outer peripheral surface 2 Locking part 3 Co-rotation prevention part 4 Separation prevention part 5 Coupler 11 Non-locking part, 13 concave groove P Center of pin sleeve, Q Center of co-rotation prevention part

Claims (3)

[Claims] A pin sleeve having one end inserted into the coupler, wherein the pin sleeve has a locking portion at one end, and the locking portion is offset from a pin sleeve detachment preventing portion and a center of the pin sleeve. An optical communication connector comprising: a co-rotation prevention part having a core, wherein at least the co-rotation prevention part and the separation prevention part are staggeredly inserted into the coupler. 2. A locking portion and a non-locking portion connected to the locking portion are inserted into the coupler, and the non-locking portion and the co-rotation preventing portion of the locking portion are inserted with a stagger with respect to the coupler. The optical communication connector according to claim 1, wherein 3. The pinion according to claim 1, wherein the co-rotation preventing portion is a concave groove, bites into the pin sleeve from the outer peripheral surface, and is eccentric from the center of the pin sleeve. Optical communication connector.