JPH02726Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is based on optical fiber cord (or core wire)
The present invention relates to a rectangular connector used for a composite cable consisting of an electric wire with a metal conductor, and particularly to its lock structure.

[Prior art and problems to be solved] In general, the lock structure of square connectors is as follows: 1)
It can be roughly divided into screw type and 2) hook type, but 1) screw type has problems in that the screws may come loose and operation is troublesome, while 2) hook type has problems with tightening. There are problems in that the attachment force is weak and the lock tends to come off when external force is applied.

This invention solves the above problems, is easy to operate, does not easily loosen or come off even when subjected to vibration or external force, and is particularly designed to prevent gaps from forming on the abutment surface of the ferrule attached to the tip of the optical fiber cord. The object of the present invention is to provide an optical composite connector that avoids this problem.

[Means for Solving the Problems] As shown in Figures 1 to 4, (1) Attach bayonet lock sockets 62 having lateral grooves 64 to both left and right ends of the receptacle 47, and engage the plug 21 with the lateral grooves 64. A bayonet lock rod 36 having a pin 38 is provided, and a spring 46 is attached to the rod 36,
(2) The spring constant of the spring 46 is made larger than the spring constant of the spring 28. .

[Example] For example, an optical composite cable 1 as shown in FIG.
0, i.e. around the tension member 12, 2
A case will be described in which the optical fiber cord 14 and the electric wire 16 are provided (18 is interposed), and the present invention is used in a cable in which a sheath 20 is provided thereon.

FIG. 1 is a plan view of the plug 21, showing a state in which the upper half of the hood 22 is removed, leaving only a portion.

24 is an insulator.

Reference numeral 26 denotes a known precision-machined ferrule, which is attached to the tip of the optical fiber cord 14, and its front end protrudes from the front of the insulator 24 (front, rear, left and right in FIG. 1 are determined as shown by arrows 25). ). Ferrule 26 is also constantly biased forward by spring 28 and nut 30.

A pin contact 32 is attached to the tip of the electric wire 16, is buried in the insulator 24, and has a front end protruding.

As shown in FIG. 3 (a side view of FIG. 1 from the left), the ferrule 26 and pin contact 32 are
There are two of each. 33 is a front shell surrounding them.

Furthermore, the tip of the tension member 12 is fixed to the hood 22 with a screw 34.

Bayonet lock rods 36 are provided at both left and right ends of the hood 22 in the front-rear direction. At their tips a small pin 38 is mounted laterally, and at their rear ends a head 42 with a groove 40.
Further, a spring 46 is inserted between the collar 44 and the shoulder 23 of the hood 22, and its spring constant is made larger than that of the spring 28 of the ferrule 26 (the reason for this will be described later).

47 in FIG. 4 indicates a receptacle.

48 is a shell, the front part 49 of which engages with the above-mentioned shell 33 (in FIG. 4, the front-rear direction is determined as shown by an arrow 51).

50 is an insulator, and an adapter 52 that mates with the ferrule 26 is embedded therein.
This adapter 52 has a holder 58 inside the body 54.
The sleeve 56 is provided through the well-known (Electrical and Telecommunications Corporation)
The structure is almost the same as the FC type.

60 is a socket contact.

Bayonet lock sockets 62 are attached to both left and right ends of the shell 48 by nuts 66. 64 is a horizontal groove in which the pin 38 engages.

[Function] An electric wire 68 is soldered to the socket contact 60 of the receptacle 47 (FIG. 4). Also, a known plug 7 is attached to the tip of the optical fiber cord 70.
2 (for example, the FC type of the Telegraph and Telephone Public Corporation),
Insert into the rear of the adapter 52. In addition, 74 is a ferrule, 76 is a spring, and 78 is a nut.

When the receptacle 47 is mated to the plug 21, the end surfaces of the ferrules 26 and 74 are connected to the adapter 5.
2 and the pin contact 32 is inserted into the socket contact 60.

The rod 36 for the bayonet lock and the spring 46
Push it in while compressing it, and insert the tip into the socket 62.
the pin 38 and rotate it slightly to engage the pin 38 in the lateral groove 64.

[Effects of the invention] (1) Since the spring constant of the spring 46 is made larger than that of the spring 28, the tip surfaces of the ferrules 26 and 74 can always maintain a pressure contact state even if vibration or external force is applied. Can be done.

(2) Since the bayonet is locked at both left and right ends of the flat rectangular connector, the plug 21 and receptacle 47 are fixed with a balanced tightening force. Also, since it uses a bayonet lock system, it is easy to operate.

[Brief explanation of the drawing]

The drawings are all related to the embodiments of the present invention, and the drawings are of the first embodiment.
2 is a cross-sectional view of the optical composite cable 10, FIG. 3 is a side view of FIG. 1 seen from the left, and FIG. 4 is a partially cut-away plan view of the receptacle 47. FIG. 10: Optical composite cable, 14: Optical fiber cord, 16: Electric wire, 21: Plug, 24: Insulator,
26: Ferrule, 28: Spring, 32: Pin contact, 36: Rod, 38: Pin, 46: Spring, 47: Receptacle, 52: Adapter, 5
6: Sleeve, 60: Socket contact, 6
2: Socket, 64: Horizontal groove.

Claims (1)

[Claims for Utility Model Registration] The ferrule 26 attached to the tip of the optical fiber cord 14 and the pin contact 32 attached to the tip of the electric wire 16 are made to protrude to the front, and the ferrule 26 is biased forward by the spring 28. an adapter 52 having a sleeve 56 with which the ferrule 26 engages from one side and the ferrule 72 of the plug 72 from the other; and a socket contact 60 that engages with the pin contact 32. A flat optical composite rectangular connector with a wide left and right width, comprising a receptacle 47, and a horizontal groove 64 at both left and right ends of the receptacle
Attach a socket 62 for a bayonet lock with a pin 38 to the plug 21; attach a spring 46 to the rod 36; An optical composite connector characterized in that the pin 38 is moved forward to engage the lateral groove 64; and the spring constant of the spring 46 is made larger than the spring constant of the spring 28.