JPH02297507A - Optical connector - Google Patents

Abstract

PURPOSE:To improve the work efficiency by constituting this connector so that frictional force of one half part of a positioning pin and a pin hole of one connector block into which it is inserted becomes larger than frictional force of the other half part of the positioning pin and a pin hole of the other connector block into which it is inserted. CONSTITUTION:Two connector blocks 1A, 1B have the same shape and the same size, and the inside diameters of pin holes 5a, 5b are all the same. Also, a pair of positioning pins 2a, 2b also have the same shape and the same size, but both the positioning pins 2a, 2b are formed so that the outside diameter of one half part in the lengthwise direction becomes larger than that of the other half part. Accordingly, one of the positioning pins 2a, 2b, whose diameter is larger may be larger in frictional force with the pin hole, therefore, at the time of releasing the coupling, the positioning pin is always left in the connector block into which the part of a larger diameter is inserted. In such a way, the work efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical connector for connecting optical fibers.

[Prior art]

Conventionally, as an optical connector for detachably connecting multi-core optical fibers, etc., two connector blocks whose end faces are abutted are connected by a pair of positioning pins inserted across the pin holes of both connector blocks. A positioning type is used.

In conventional optical connectors of this type, the two connector blocks are made to have the same shape and size, and the pair of positioning pins are also made to be the same size and have a uniform diameter over the entire length, due to manufacturing and precision advantages. There is.

〔assignment〕

However, because conventional optical connectors have the above-mentioned configuration, when the two connector blocks are uncoupled, it is not known in which connector block the positioning pins will remain, and even if they remain in one connector block, There are cases where the insertion state is incomplete, or even when the pin is removed without remaining in either connector block, and it is troublesome to have to check the state of the positioning pins each time they are reconnected. Ta.

[Means for solving problems and their effects]

In order to solve the problems of the prior art as described above, the present invention provides an optical connector that has two connector blocks whose end faces are butted against each other, and a pair of positioning pins that are inserted across the pin holes of both connector blocks. In , the frictional force between one half of the locating pin and the pin hole of one connector block into which that part is inserted is calculated by the frictional force between the other half of the locating pin and the pin hole of the other connector block into which that part is inserted. The feature is that the force is greater than the frictional force.

In this way, when the two connector blocks are separated from each other, the positioning pin will always remain in the connector block with the greater frictional force.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In Figure-1, IA-IB is the connector block, 2a
- 2b is a positioning pin. Connector block IA・
IB is the multi-core optical fiber core wire 3A and 3 to be connected respectively.
It is attached to the end of B, and the end faces of the optical fibers 4 are exposed on the end face in a state arranged at a predetermined pitch.

In addition, a pair of pin holes 5a and 5b are formed on both sides of the connector blocks LA and IB, respectively, and in this example, one half of one positioning pin 2a is inserted into the pin hole 5a on one side of one connector block IA. , one half of the other positioning pin 2b is inserted into the pin hole 5b on the opposite side of the other connector block IB.

The two connector blocks IA and IB have the same shape and size, and therefore the inner diameters of the pin holes 5a and 5b are also all the same. Also, the pair of positioning pins 2a and 2b are the same shape and the same size, but both positioning pins 2a and 2
For example, as shown in FIG. 2(a), one half of b has a slightly larger outer diameter than the other half in the length direction. This outer diameter difference is set to a level that does not substantially affect positioning accuracy.

When the two connector blocks LA and IB are connected using such positioning pins 2a and 2b, the positioning pin 2
For a and 2b, the larger diameter part has a greater frictional force with the pin hole, so when the connection is released, the positioning pin will always remain in the connector block where the larger diameter part is inserted. In the example of Figure 0-1, one of the positioning pins 2a has a large diameter at the portion inserted into one of the connector blocks IA, and the other positioning pin 2b has a large diameter.
The diameter of the portion inserted into the other connector block IB is large.

In the above embodiment, a case was explained in which a positioning pin as shown in Fig. 2(a) was used. The one in which the bulging part 6 is formed by crushing, and the one in which the diameter of a part of the associative part is made thinner to reduce the contact area with the pin hole as shown in bl, or the one in which the contact area with the pin hole is made smaller as shown in the same figure (fd in the same figure) are shown. It is also possible to use a material in which the surface of one half is roughened by sandblasting or the like.

Also, if you use positioning pins with a uniform outer diameter over the entire length, manufacturing will be complicated, but you can either make the inner diameter of the pin hole slightly different on one connector block and the other, or The inner diameter of the pin hole on the one side and the other side may be slightly different.

〔Effect of the invention〕

As explained above, according to the present invention, the frictional force between one half of the locating pin and the pin hole of one connector block into which it is inserted is reduced by the frictional force between the other half of the locating pin and the pin hole of the other connector block into which it is inserted. Since the frictional force is greater than the frictional force with the pin hole of the connector block, when the coupling state of both connector blocks is separated, the positioning pin will always remain in the connector block with the greater frictional force, and it will be difficult to reconnect both connector blocks. Connections can always be made in the same state. This has the advantage of improving work efficiency.

[Brief explanation of the drawing]

Figure 1 is a perspective view of an optical connector according to an embodiment of the present invention;
FIGS. 2(a) to 2(d+) are plan views of positioning pins used in the optical connector, respectively.

Claims (1)

[Claims] 1. Two connector blocks whose end faces are butted together,
In an optical connector having a pair of positioning pins inserted across the pin holes of both connector blocks, the frictional force between one half of the positioning pin and the pin hole of one connector block into which the half part is inserted is An optical connector characterized in that the frictional force between the other half of the positioning pin and the pin hole of the other connector block into which the other half is inserted is greater than that of the other half of the positioning pin.