DE9306328U1 - Fiber holder - Google Patents

Description

DR.-ING. JÜRGEN SCKM ¹ DT-BOGATZKy

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Niebuhr Optoelectronics GmbH
2000 Hamburg-54

Our Reference G 936321 DE B &bgr; Z &bgr; i Chnung : Your Reference

Fiber holder

Date
21.04.1993

The invention relates to a fiber holder for optical fibers for fixing the position in a connection device for optical fibers, which consists of a base profile body and at least one cover body, which can be connected to one another and have grooves into which the fiber holders and the optical fibers are inserted, whereby the fiber holders consist of two half shells each with a groove formed coaxially to their longitudinal axis for receiving an optical fiber and an external material thickening and are held together in the connection device by an external clamping device which is pushed onto the external material thickenings of the holder halves.

Such a fiber holder is known from DE 92 10 401 Ul. In this fiber holder, semicircular material thickenings are formed on the holder halves in the middle area, around which a clamping ring is attached when the holder halves are assembled. The disadvantage of this fiber holder is that if there are unavoidable tolerance inaccuracies in the inner diameter of the clamping ring, it can sit loosely on the material thickenings and move, which makes installation in the recesses provided for the material thickenings in the base profile body and the

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at least one cover body is not possible.

The object of the invention is to improve the fiber holder of the type mentioned at the outset so that the outer clamping device can be arranged on the superimposed holder halves in a way that prevents it from slipping.

According to the invention, the object is achieved by the characterizing features of claim 1. Advantageous embodiments of the invention are described in the dependent claims.

The invention is explained in more detail below using the example of the fiber holder shown in the drawings. It shows:

Fig. 1 a fiber holder in side view in partial section,

Fig. 2 the fibre holder according to Fig. 1 in plan view with ground front section,

Fig. 3 shows a fiber holder according to Fig. 1 with a further embodiment of a clamping device in side view,

Fig. 4 shows one half of the fiber holder according to Fig. 1 to 3 in top view and side view.

Each fiber holder 2 consists of two holder halves 17, 18, in each of which a groove 21 extending coaxially to the longitudinal axis 14 of the fiber holder 2 is formed in the middle for receiving an optical waveguide. The middle part 30 of each fiber holder 2 has two semi-cylindrical material thickenings 19 formed on the holder halves 17, 18, on one end section 3 of which a semi-circular ring-shaped web 4 is formed that protrudes from the material thickenings 19. On the surfaces 2 3 that come into contact with one another

the holder halves 17, 18 have blind holes 25 and pins 26 as well as a web 27. When the two holder halves 17, 18 are placed on top of each other, the pins 26 and the web 27 are inserted into the respective blind holes 25 so that the holder halves 17, 18 cannot move on each other. In this position, a clamping device 1 is pushed onto the material thickenings 19 until it rests against the webs 4. The clamping device 1 can be a clamping bush 15 or a spring 5. The use of a spring 5 is particularly advantageous, since existing problems with regard to the inner diameter tolerances are avoided with clamping bushes 15.

It is also possible to design the clamping device 1 as an elastic rolling ring made of rubber or similar. If one rolling ring is not sufficient for such a connection of the holder halves 17, 18, additional rolling rings can be pushed onto the material thickenings 19.

Before inserting each fiber holder 2 into the respective base profile body, the respective front section 28 of the fiber holder 2 with the clamped optical fibers is ground flat and polished in a known manner at right angles to the longitudinal axis 14 of the fiber holder 2. This creates a defined transmission surface for measured values, which rests immovably on the respective optical or optoelectronic coupling element, provided that the cover body or bodies are firmly connected to the base profile body.

Claims (4)

PROTECTION CLAIMS 1. Fiber holder for optical fibers for fixing the position in a connection device for optical fibers, which consists of a base profile body and at least one cover body, which can be connected to one another and have grooves into which the fiber holders and the optical fibers are inserted, whereby the fiber holders consist of two half shells each with a groove formed coaxially to their longitudinal axis for receiving an optical fiber and an external material thickening and are held together in the connection device by an external clamping device which is pushed onto the external material thickenings of the half shells, characterized in that on one end section (3) of the material thickenings (19) of the holder halves (17, 18) formed as half shells, a semicircular ring-shaped web (4) is formed which protrudes relative to the material thickenings (19), against which the clamping device (1) rests when the fiber holder (2) is assembled. 2. Fiber holder according to claim 1, characterized in that the clamping device (1) is designed as a clamping bush (15). 3. Fiber holder according to claim 1, characterized in that the clamping device (1) is designed as a spring (5). 4. Fiber holder according to claim 1, characterized in that the clamping device (1) is designed as a rolling ring made of rubber or the like.