JPH0446247Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an optical fiber connector for detachably connecting an optical fiber cord for transmitting optical signals to a mating connector having a light receiving element, for example. .

[Conventional technology]

In a conventional optical fiber connector of this kind, the cross-sectional shape of the mating part between the male connector and the female connector is generally square, with both sides of one side chamfered, as shown in FIG. 4, the mating part 2 of the male connector 1. It has become a deformed hexagon like this. Note that 3 is a plug that is arranged at the center of the fitting part 2 and coaxially surrounds the core part 4 of the optical fiber cord.

This is to prevent relative rotation of the male connector to the female connector and to regulate the insertion direction when mating, but since the optical fiber cord can only be connected from a specific direction, it causes various inconveniences. There are many things. For example, when the male connector's knob is shaped like a dogleg or L-shape to pull in the optical fiber cord from the side, or when connecting devices, the positional relationship of the devices can be arbitrarily selected. In some cases, the cross-sectional shape described above may lack the degree of freedom.

Furthermore, depending on the installation location and installation direction of the optical fiber connector, it may be difficult to insert or remove the male connector, and it may also be difficult to secure a sufficient minimum radius of curvature required for the optical fiber cord. be.

In order to solve this problem, it is conceivable to prepare a plurality of types of optical fiber connectors with different optical fiber cord retracting angles, but this is not economical because it requires many types of parts.

[Purpose of the invention] The purpose of the invention is to solve the problems of the conventional example by regulating the rotation of the connectors when they are mated together while using one type of member. To provide an optical fiber connector in which the pulling direction of an optical fiber cord can be arbitrarily selected before fitting.

[Summary of the idea]

The gist of this invention to achieve the above objectives is as follows:
It has a built-in optical fiber cord, has a rod-shaped plug coaxially provided around the core of the optical fiber cord at the tip, and has a regular polygonal connecting portion with a larger diameter than the plug at the base of the plug. A connector main body, a fitting portion that fits with the mating connector while regulating the rotational direction at the front end and covers the plug, and a regular polygonal hole portion that fits into the connecting portion at the rear end. The present invention is an optical fiber connector characterized by comprising a coupler provided with a mounting portion.

[Example of idea]

The present invention will be explained in detail based on the embodiments shown in FIGS. 1 and 2.

FIG. 1 is a perspective view of an optical fiber connector according to the present invention, and FIG. 2 is a partially cutaway exploded perspective view. An optical fiber cord 12 is drawn into the connector body 11 made of synthetic resin from the side of a knob 11a at the rear end, and a rod-shaped plug 11b at the tip.
Core part 12 with jacket 12a peeled off inside
b is inserted coaxially, and the tip end surface of the core portion 12b is exposed on the same plane as the tip end surface of the plug 11b.
A box-shaped connecting portion 11c is formed at the base of the plug 11b, and the plug 11b projects forward from the center of a square end face of the connecting portion 11c. A locking pawl 11d is provided on each of the four surfaces around the connecting portion 11c. In addition, the connecting part 1
1c is fitted with a synthetic resin coupler 13 so as to cover it from the outside, and the tip of this coupler 13 has a modified hexagonal shape as shown in FIG. A fitting part 13a is provided, and a mounting part 13b having a square hole inside for engaging with the connecting part 11c is provided at the rear end. A partition 13c is provided between the fitting part 13a and the mounting part 13b, and a hole 1 into which the plug 11b of the connector body 11 is inserted is provided in the center of the partition 13c.
3d, and 4 around the mounting part 13b.
There is a locking claw 11d provided on the connecting part 11c.
A locking hole 13e into which the locking hole 13e is inserted is provided. Further, the fitting portion 13a is provided with a guide portion 13f that serves as a guide when fitting with a mating fitting portion, and a locking rib 13g for locking after fitting.

Connect the attachment part 13b of the coupler 13 to the connector body 11.
The optical fiber connector is completed by attaching it to the connecting portion 11c and locking the locking claw 11d to the locking hole 13c. However, the fitting part 1 of the coupler 13
3a and the direction of the optical fiber cord 12 drawn into the connector body 11 from the side.
It is necessary to consider the mounting angle of the coupler 13. That is, the coupler 13 is 4
Since it can be rotated in any direction, you can select the desired direction and install it. Note that the attachment of the coupler 13 can be selected at the time of assembly, or the user can reattach it as necessary.

In the above embodiment, the connecting portion 11c is square, but it is not necessarily a square, and may be a regular triangle, a regular pentagon, a regular hexagon, or a regular octagon. In this case, it goes without saying that the square hole in the mounting portion 13b of the coupler 13 that is fitted into the connecting portion 11c also needs to be a regular polygon corresponding to the shape of the connecting portion 11c.

If the connecting portion 11c is made into a regular polygon in this way,
The insertion direction of the coupler 13 into the connector main body 11 can be selected in four ways in the case of a square, and in eight ways in the case of a regular octagon, and the degree of freedom increases as the shape becomes more polygonal.

In the embodiment, the plug 11b is made of the same material as the connector body 11, but it may be made of metal in consideration of strength.

FIG. 3 shows an example of use of the optical fiber connector according to the present invention, in which the connector body 11 is connected to the coupler 13.
The optical fiber cord 12 is drawn in from any direction, and when used to connect devices A, B, and C, the optical fiber cord 12 can be used to wire the shortest distance between devices A and C and between B and C. can do.

[Effect of idea]

As explained above, in the optical fiber connector according to the present invention, a coupler is attached to the connector body, and the insertion direction of the optical fiber cord can be freely rotated by adjusting the attachment angle of the coupler with respect to the mating connector whose insertion direction is determined. This provides significant advantages for wiring.

[Brief explanation of drawings]

The drawings show an embodiment of the optical fiber connector according to the present invention, FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, and FIG. 3 is an explanatory diagram when wiring an optical fiber cord between devices. FIG. 4 is a front view of a conventional optical fiber connector. The code 11 is the connector body, 11a is the knob part,
11b is a plug, 11c is a connecting portion, 12 is an optical fiber cord, 12a is a jacket, 12b is a core portion, 13 is a coupler, 13a is a fitting portion, 13b is a mounting portion, and 13c is a partition wall.

Claims (1)

[Scope of utility model registration request] It has a built-in optical fiber cord, has a rod-shaped plug coaxially provided around the core of the optical fiber cord at its tip, and has a regular polygonal connecting portion with a larger diameter than the plug at the base of the plug. a connector body having;
A fitting part is provided at the front end to restrict the rotational direction of the mating connector and to cover the plug, and a mounting part having a regular polygonal hole to fit into the connecting part is provided at the rear end. An optical fiber connector comprising a coupler.