DE7510132U - Connector for optical fibers - Google Patents

Description

LICENTIA Patent-Verwaltungs-GmbH 6000 Vrankfurt (Main) 70, Theodor-Stern-Kai 1

Ulm (Danube), March 27, 1975 PT-UL / Bs UL 74 / 107a

"Connector for optical fibers ¹¹

The innovation relates to a connector for Optical fibers.

Due to their advantageous properties, optical fibers are used as a transmission medium in broadband optical Message transmission systems used. At predeterminable Such a transmission link should be easily separable, for example to set up branches can. There are coupling devices for connection at the separation points of the fiber end pieces to be provided. In these coupling devices, the end faces of the abutting

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Optical fiber end pieces with great precision on a common optical axis are aligned in order to avoid coupling losses.

A coupling device of this type, which also enables precise adjustment of the optical fibers, is from the DT-PS 2 159 327 known. With this coupling device, the end pieces of the optical fibers are spatially spaced at a fixed distance mutually offset axes, the distance between which lies within certain defined limits, rotatably arranged. However, this coupling device is relatively complex and expensive to manufacture. Furthermore the great adjustment accuracy that can be achieved with this coupling device is often not required at all in practice.

The innovation is based on the task of creating a simply structured and thus to specify connecting plugs for optical fibers that can be produced inexpensively, but also with a for practical applications completely sufficient accuracy the alignment of the end pieces of two abutting one another Allows optical fiber end pieces on a common optical axis.

This object is achieved according to the innovation by a connector for optical fibers, which is characterized by means of two connector housing parts which can be detachably connected by means of a union nut and which are arranged in the connector housing parts Support bodies and with the support bodies firmly connected light

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Guide fiber end pieces, of which the first end piece is set back in a prismatic widening funnel shape Hat of the first support body is arranged, and τοη which the second end piece only over part of its length firmly connected to the further support body by a calibration on the train belonging to the connector housing part supporting spring clip is arranged such that it can be loaded freely protruding into the connector housing part.

A connector designed in this way enables the coupling of two optical fibers with simultaneous alignment of their abutting end faces on a common optical axis.

An embodiment of the plug connection is explained in more detail with reference to the drawing. Figure 1 shows in a longitudinal section a first part of the connector plug from a connector housing part 2 and a first support body 12 arranged therein. The support body 12 has essentially the shape of a circular cylinder with a surface that interrupts the lateral surface and becomes one at one end of the cylinder Funnel 4 widening, prismatic groove 3 · In this groove is set back and firmly connected to the support body 12 End piece 1 of a first optical fiber arranged. A union nut 5 enables a detachable connection of the first Connector housing part 2 with the connector housing part 6 shown in FIG. 2.

Figure 2 also shows a longitudinal section through the second section of the connector, which in relation to Figure 1 to is guided rotated through an angle of 90 ° about the longitudinal axis. A further support body 8 is arranged in the connector housing part 6. With this support body only along a section The end piece 7 of a second optical fiber, which is otherwise arranged so as to protrude into the connector housing part 6 /, is firmly connected.

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Dae in the connector housing part 6 protruding end of the Optical fiber 7 can be loaded by means of a spring clip 9, which in turn is supported on housing part 6.

To set up a closed light guide transmission path, the housing parts 2, 6 are tightened by the union nut 5 connected to one another. The free end of the optical fiber 7 is directed into the prismatic groove 3 of the support body 12, which is achieved on the one hand by its funnel-shaped expansion 4 and on the other hand by a pressure exerted by the spring clip 9 on the fiber end piece in the direction of the groove 3 This pressure arises from the fact that one freely movable end 13 of the spring clip 9 is pressed down by a certain amount when the union nut 5 is tightened. After tightening the union nut, the end faces of the optical fiber end pieces 1 // ^ are within the groove 3 at a small distance or even directly abutting one another Aligned common optical axis, so that the lowest possible coupling losses result when optical signals are transmitted.

If necessary, the transmission path can be easily separated by loosening the union nut 5.

To align the fiber optic end pieces even in adverse environmental conditions, especially in the case of strongly fluctuating To maintain temperatures, at least one of the support bodies 12 is made of a ceramic material, the has the lowest possible expansion coefficient.

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Claims (1)

Claim to protection Connector for optical fibers characterized by two means of a union nut (5) releasably connectable connector housing parts (2,6), with supporting bodies (8,12) arranged in the plug housing parts and with the supporting bodies (8,12) firmly connected optical fiber end pieces (1,7), of which the first end piece (1) is set back in a funnel-shaped widening prismatic groove (3) of the first support body (12), and of which the second end piece (7) is fixedly connected to the further support body (8) only over part of its length of one on Plug housing part (6) supporting spring clip. ■ (9) is arranged so that it can bear loads and protrudes freely into the connector housing part (6) 7510132 08/07/75