JPH0262403U

JPH0262403U -

Info

Publication number: JPH0262403U
Application number: JP14089488U
Authority: JP
Priority date: 1988-10-28
Filing date: 1988-10-28
Publication date: 1990-05-10

Description

[Brief explanation of the drawing]

第１図、第２図および第３図はそれぞれ本考案
の第１、第２および第３の実施例によるリードホ
ールまわりの構造を示す光機器の要部断面図、第
４図は光フアイバケーブルが導出されるケースの
リードホールまわりの従来の構造例を示す光機器
の要部断面図である。２：ケース、２ａ：リードホール、４：パツキ
ン、５，５１，５２，５３：パツキン押え、６，
７，８：スリーブ、６ａ：パツキン部、７ａ：あ
ご部、５２ａ：あご部。 1, 2 and 3 are sectional views of main parts of optical equipment showing the structure around the lead hole according to the first, second and third embodiments of the present invention, respectively, and FIG. 4 is an optical fiber cable FIG. 2 is a cross-sectional view of a main part of an optical device showing an example of a conventional structure around a lead hole of a case from which an optical device is led out. 2: case, 2a: lead hole, 4: seal, 5, 51, 52, 53: seal presser, 6,
7, 8: Sleeve, 6a: Packing part, 7a: Jaw part, 52a: Jaw part.

Claims

[Scope of Claim for Utility Model Registration] (1) The lead of an optical fiber cable that passes through a lead hole formed in a case that houses an optical device such as an optical microswitch and leads the optical signal of the optical device to the outside of the case. A device for suppressing deformation in the bending direction near the hole, which is formed as a hollow sleeve made of an elastic material, and is inserted into the lead hole by an optical fiber cable and is immovable in the longitudinal direction of the inserted optical fiber cable. A support device for an optical fiber cable, characterized in that it is fixed. (2) In the optical fiber cable support device according to claim 1, the hollow sleeve forming the support device becomes thinner as it goes from the end on the lead hole side to the end on the outside of the case. An optical fiber cable support device characterized in that it is formed as follows. (3) In the optical fiber cable support device according to claim 1, the hollow sleeve forming the support device is configured such that its rigidity is gradually reduced as it moves from the end on the lead hole side to the end on the outside of the case. A support device for an optical fiber cable, characterized in that a plurality of holes are formed in the sleeve. (4) In the optical fiber cable support device according to claim 1, the hollow sleeve forming the support device has an end portion on the lead hole side that supports the optical fiber cable against the case at the lead hole. 1. A support device for an optical fiber cable, comprising a ring-shaped packing portion for airtightly holding the hollow sleeve and fixing the hollow sleeve to the lead hole side. (5) In the optical fiber cable support device according to claim 1, the fixation of the hollow sleeve forming the support device to the lead hole side extends at least along the axial length of the lead hole through which the optical fiber cable passes. A part of the optical fiber cable is formed into a female thread, and the optical fiber cable is inserted into the case through a ring-shaped packing fitted to the cable by a packing holder having a hole in the center through which the optical fiber cable passes through, which is screwed into the female thread. This is achieved by forming a ring-shaped jaw on the packing holder and forming a ring-shaped jaw on the lead hole side end of the hollow sleeve to engage with the jaw of the packing holder. Characteristic optical fiber cable support device.