JPS60198506A - Pressure resistance type element for penetration of optical transmission rod - Google Patents

Abstract

PURPOSE:To prevent the damage of an optical cable and the variance in the sealing state thereof and to eliminate the need for positioning of the optical cable in a partition block by plating metal on the surface of the optical cable, sealing the through-hole with solder and projecting the optical cable to both sides of the partition block. CONSTITUTION:A through-hole 3 is opened at the center of a circular cylindrical partition block 2 consisting of berrylium copper, etc. and an optical transmission rod 4 such as an optical cable, optical fiber core, optical axis pin or the like plated with metal such as copper in at least the part existing in the block 2 is passed through the hole 3. Solder 5 is packed into the hole 3 in which the rod 4 is penetrated to seal said hole. The rod 4 is projected to both sides of the block 2 at least at the length at which said rod can be bent.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is directed to
The present invention relates to a pressure-resistant photoconductive strip penetrating element suitable for use when transmitting and receiving optical signals with a pressure difference of 'lA11i at a location where the force K is large.

(Prior Art) This type of conventional pressure-resistant photoconductive strip penetrating element has a partition 71
A through-hole is provided in the center of the rod, and the optical fiber rod is inserted into the through-hole, and with the optical fiber rod positioned at the center, the through-hole is sealed with glass or epoxy resin. was.

However, in the case of a pressure-resistant type photoconductive strip penetrating element having such a structure, even though the glass is used for sealing, the optical fiber rod is not connected to the edge of the part surrounding the optical fiber rod on the end surface of the glass. Damaged when subjected to bending stress1
) There are some easy drawbacks. In addition, J'U with 1 poxy resin etc.
In the case of those in which the partition block L was stopped, the adhesion of the 1-boxy resin etc. changed depending on the surface treatment of the partition block and the optical fiber rod, which caused problems during work.

Furthermore, in the case of conventional pressure-resistant photoconductive strip penetrating elements, it is necessary to position the light 7 nozzle 1] at the center of the partition block, which has the disadvantage that this work becomes troublesome. .

(Object of the Invention) An object of the present invention is to prevent the optical cable from being damaged by the sealing member of the through hole of the partition block and to prevent variations in the sealing state, and to eliminate troublesome positioning work. It is an object of the present invention to provide a pressure-resistant type photoconductive strip penetrating element that can be omitted.

(Structure of the Invention) The pressure-resistant photoconductive strip penetrating element according to the present invention has a partition 71J.
'9. A through hole is drilled in the hole, a photoconductive strip whose surface is plated with metal is passed across the through hole, the inside of the through hole is sealed by filling solder, and the photoconductive strip has a metal plated surface. It is characterized in that both sides of the partition block protrude by at least a bendable length C.

When sealing the n through hole with sea urchin half 11 in this 3, half t]1
Since it is a soft metal, its edges will not damage the photoconductive strip. In addition, since the non-metal material is plated with metal, unlike the solder-sealed part, variations in the sealing state can be prevented. Furthermore, the photoconductive stripes (
Since the length protruding from both sides of the partition block L1 is at least long enough to allow bending, there is no need to position the photoconductive strip within the partition block L1, making it easier to manufacture the device. It can be carried out.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention. This resistant type photoconductive strip element 1 has a cylindrical partition block 2 made of beryllium copper or the like, and a through hole 3 is bored in the center of the partition block 2. Through the through hole 3, an optical conductive body 4 such as an optical cable, an optical fiber core wire, or an optical axis pin, which has metal plating such as copper plating applied to at least the portion existing inside the partition block L'' 2, is passed. There is.

Half [1
11b is filled and sealed. Photoconductive strip 4
The partition) 1" protrudes from both sides of the hook 2 to a length that can be bent 1+J.

Note that it is also possible to insert a large comb (a plurality of photoconductive strips 4) through the n-hole 3.

FIG. 2 shows a second embodiment of the invention. The pressure-resistant photoconducting strip penetrating element 1 of this embodiment has a partition plate L1 made of beryllium copper or the like having a cylindrical shape and a flange 6 at the end. A through hole 3 is formed in. The through hole 3 has a large diameter hole 3A on the pressure side (left side in the drawing) and a small diameter hole 3B on the low pressure side (right side in the drawing).

There is a stepped portion 3C at the boundary between the two. A cylindrical protrusion 7 is provided on the pressure side end surface of the partition hook 2 so as to match the large diameter hole 3Δ. Partition block 2 low pressure #ll
On the N side, a receptacle 8 is fitted with a screw 9e with its hole aligned with the small diameter hole 3B.

A photoconductive strip 4 made of an optical cable is passed through the opening hole 3. The photoconductive strip 4 protrudes from both ends of the partition block 2 by at least a bendable length. The protruding length of the body 4 should be set to a length that reaches the 11 devices etc. to be connected. By the way, the sheath 4A is peeled off to expose the optical fiber core wire 4B, the surface of which is coated with a metal plate 4 such as copper plating. The small diameter hole 3B is filled with solder 5 and sealed with τ. A molded portion 10 made of urethane rubber or the like is provided spanning the flange 6 and the photoconductive strip 4. A molded portion 11 made of urethane rubber or the like is provided spanning the receptacle 8 and the photoconductive strip 4. It is provided.

Such a pressure-resistant photoconductive strip penetrating element 1 is inserted from the pressure side into the wall penetrating hole 13 of a partition wall 12 made of a shell of a submersible, etc., and is inserted between the flange 6 and the partition wall 12 and between the partition block 2 and the partition block 2. l! 12, O-rings 14 and 15 are interposed between them to form a seal. The flange 6 is fixed to the partition wall 12 with bolts 16.

Both ends of the photoconductive strip 4 protruding from the partition block 2 are
It can be connected to other optical cables or equipment via connectors or the like, or it can be connected to other optical fibers by fusion splicing of optical fibers.

(Effects of the Invention) As explained above, the pressure-resistant photoconductive strip pass-through element according to the present invention seals the n-through holes with solder, and since the solder is a soft metal, the edges of the through-holes are sealed. Damage to the photoconductive strip can be prevented. In addition, in the solder-sealed part, metal e
Since the non-containing materials are plated with metal, variations in the sealing state can be prevented and a stable sealing state can be obtained. Furthermore, since the photoconductive strips are protruded from both sides of the partition by at least a bendable length,
There is an advantage that there is no need to position the photoconducting strip within the partition 10, and the production of the penetrating element becomes easier.

[Brief explanation of the drawing]

FIG. 1 shows the first voltage-resistant photoconductive striped element according to the present invention.
FIG. 2 is a perspective view of the embodiment, and FIG.
FIG. 3 is a longitudinal cross-sectional view of the embodiment. DESCRIPTION OF SYMBOLS 1...Pressure-resistant photoconductive strip contact element, 2...Partition block + ivy, 3...Kara through hole, 3A...Large diameter hole part, 3B...
... Small diameter hole part, 3C... Step part, 4... Photoconductive strip,
4Δ...Sheath, 4B...6 optical fibers, 5...
・Half Bit, 6...Flange, 7...Cylindrical protrusion,
8... Receptacle, 10° 11... Shield part.

Claims (1)

[Claims] A through hole is made in the partition 1u, a photoconductive strip whose surface is plated with metal is passed across the through hole, the inside of the through hole is sealed with solder, and the photoconductive strip is A pressure-resistant photoconductive strip v4 element, characterized in that the body protrudes from both sides of the partition button by at least a bendable length.