FR2790608A1 - CASSETTE, IN PARTICULAR FOR OPTICAL FIBERS OR CONDUCTIVE WIRES - Google Patents

Abstract

The invention concerns a closure having at least two passages (3) communicating with outside and comprising a base (1) spaced from two covers and provided on their two surfaces with a set of support plates defining a path for a conductor.

Description

Cassette especially for optical fibers or conductive wires This

  The invention relates to cassettes and, more particularly, to cassettes intended to receive conductors. In the present specification, the term “conductors” means both filiform or strip-shaped elements in which light can propagate, as filiform or strip-shaped elements conducting electricity, in particular metallic wires, by for example copper, or telephone copper wires. The organization of the optical fibers in a container requires a system of cassettes or trays which makes it possible to store the optical fibers, to respect the constraints of minimum radii of curvature and to facilitate interventions on the fibers. The existing cassettes are generally intended to allow a certain number of simple fiber connections (an input fiber connected to an output fiber). These connections are

  housed in one side of the cassette or tray.

  The invention relates to a cassette which, with the same size, can receive more conductors and which, for the reception of a given length of conductors, requires fewer parts and less space. In addition, the cassette according to the invention makes it possible to separate the conductors by application and to use different types of connectors. We search

  in particular to separate the coiling of the extra lengths of the connections.

  The invention therefore relates to a cassette comprising a body and a first cover having at least two communication passages with the outside. The bottom of the body is spaced from the front part of the first cover and is provided, on its first face opposite the first cover, with a first baffle for defining a path. According to the invention, the bottom is

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  spaced from the front part of a second cover and is provided with a second baffle on its second face opposite the front part of the second cover. The two faces of the bottom are thus used to provide two baffles for defining a path for conductors. We thus obtain: an economic advantage - a cassette (a single piece, a single production cycle, a single packaging ... etc), but with twice the storage area for fibers, 0 ergonomic advantages - the possibility of separate the fibers by application by arranging them in different sides (one side for client A, one side for client B), the use of one side for the connections and the other for the coiling of the extra lengths. An intervention on this one does not affect communications 1s, - the possibility of using different types of connectors (ex heat-shrinkable on one side, mechanical connection on the second - it is

  difficult to mix the two types on the same side).

  The baffling is most often as it defines a path whose radius of curvature is at any point greater than the minimum radius allowable for the conductor, for example 25 mm, so as to prevent any bending

untimely drivers.

  According to a very particularly preferred embodiment, the bottom has a through hole at a point in the path. It is thus possible to pass the conductors from one face to the other from the bottom. Preferably, this through hole is

  advantageously, at the edge of the bottom, several through holes are provided.

  To fix the cassette, the body usually comprises a projecting fixing tab and there is also usually provided a means of fixing a conductor in each passage and a member for holding the conductors on the path defined by the baffling. The cassette may have a lateral face extending on either side of the bottom, at least on three of its

  sides, excluding the side with the fixing lugs.

  In the accompanying drawing, given solely by way of example, FIG. 1 is a perspective view of the bottom of a cassette according to the invention, and

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  Figure 2 is a view on a smaller scale of one of the covers.

  The plastic cassette has one body and two

opposite covers.

  The body consists of a bottom 1 of substantially rectangular shape, except that one of the short sides is curved by turning its convexity towards the outside. On each face of the bottom are baffles defining a path for an optical fiber. On the small rectilinear side of the bottom are formed two passages 3 for communication with the outside. The bundle of optical fibers can enter through one of these passages in the cassette and exit through the other. These passages include a means 4 for fixing a conductor. In this case, the fixing means are constituted by the fact that the lateral face 5 of the cassette comprises, at the end close to the small straight side, slots 6 and that corresponding holes 7 are formed in the bottom 1, so that a collar passing through these slots 6 and holes 7 can clamp the optical fibers which pass through the

  passage 4. The side face 5 extends on either side of the bottom 1.

  On the edge of the bottom 1 and on the path defined by the baffles 2 are formed four notches 8 forming through holes which allow

  conductors to pass from one side of the bottom 1 to the other.

  On the small side of the bottom protrude two tabs 9 for fixing the cassette. It is also provided on the bottom 1 of the fixing jaws 10

a splice.

  The cassette also comprises means 11 for holding a

  driver on the path defined by baffling 2.

  FIG. 2 shows one of the covers which has a front part 12 which is intended to come opposite one of the faces of the bottom 1, the front part of another identical cover coming opposite the other face of the bottom 1. Each cover has latching means 13 which snap into corresponding latching holes 14 formed on the

  side 5 of the cassette body.

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Claims (7)

  1. Cassette comprising a body and a first cover and having at least two passages (3) for communication with the outside, the bottom (1) of the body being at a distance from the front part of the first cover and being provided, on its first opposite the first cover, a first baffle (2) for defining a path of a conductor, in particular an optical fiber or an electrically conductive metal wire or a copper wire telephone, characterized in that the bottom (1) is spaced from the front part of a second cover and is provided with a second baffle on its   second face opposite the front part of the second cover.   2. Cassette according to claim 1, characterized in that the baffling is such that it defines a path whose radius of curvature is in all   point greater than the minimum radius allowed by the conductor.   3. Cassette according to claim 1 or 2, characterized in that the   bottom (1) comprises a hole (8) crossing at a point of the path.   4. Cassette according to claim 3, characterized in that the hole (8) crossing is at the bottom edge.   5. Cassette according to one of claims 1 to 4, characterized in that   that the body has a protruding fixing lug (9).   6. Cassette according to one of claims 1 to 5, characterized by a   means (4, 6) for fixing a conductor in each passage.   7. Cassette according to one of claims 1 to 6, characterized in that   that it has a side face (5) extending on either side of the bottom (1).