MXPA99005708A - Protective device for a power outlet for optical fibre - Google Patents

Abstract

A thin protective sheet (11) is connected for contact making with the protective plate (10) of a rear printed circuit (1) in a module and provided with contact holes (14), whereby the protective sheet (11) can be set in contact with metal guide-pin bushings (4), into which connectors (8) may be plugged for optical fibre coming from outside. The contact holes (14) present star-shaped notches between which contact tongues (15) capable of elastically deflecting and radially bending are formed. Thus, a simple and reliable cable socket protection can be obtained at a low building and assembly cost.

Description

PROTECTIVE DEVICE FOR A DISPOSITION OF PLUGS OF A WAVE GUIDE FIELD OF THE INVENTION The invention relates to a protection device for an arrangement for connecting by plug at least one waveguide to a group carrier.

BACKGROUND OF THE INVENTION A device of this type was disclosed, for example, through WO 94/12900. According to this, on the internal side of a rear wall conductive plate of a group carrier a housing is fitted, in which guide sleeves are arranged, which pass through a perforation of the conductive plate of the wall back In said guide sleeves a plug connector of a waveguide coming from the outside can be plugged. The plug connector has a metal union nut, which can be screwed to the guide sleeves. The conductive plate of the rear wall has a protective layer on its outer side, on which a metal body is fixed, in which a metal protective sleeve is screwed. The union nut and the protection sleeve are extended beyond the socket. In this area, the protective sleeve has exposed elastic tabs, which touch a smooth contact section of the union nut. The diameter of the perforation is so great that the guide sleeve or the plug connector does not contact the conductive plate of the rear wall laterally, in order to avoid stressing the plug connector arrangement. By means of the protection device in the form of a chimney, the perforation closes electromagnetically and is sufficiently protected.

OBJECTIVES AND ADVANTAGES OF THE INVENTION The invention is based on the objective of reducing the work of production and assembly of the protection device. This object is achieved by the invention in accordance with claim 1. The guide sleeve can be so long that it not only enters the perforation, but protrudes from it. The protection body bypasses the distance between the guide sleeve and the protective layer on the short path. It makes direct contact between the protective layer and the guide sleeve, so that they do not make intermediate contacts. The protection body can be configured simply and economically and requires little space, which allows easy assembly. The plug connection is much more easily accessible compared to an arrangement with a screw-in protection sleeve, so that the distance between adjacent plug-in connectors can be reduced. Thanks to the lateral elasticity of the contact opening with respect to the guide sleeve, it is prevented that lateral forces act on it, which flex the guide sleeve, for example, grooving and affect the quality of optical connection. The perforation can be configured, for example, as galvanized drilling joined to the protective layer; the sleeve-shaped protective body may consist, for example, of elastomeric plastic of good conductivity and have a rib extending on the inside. The protective body is inserted into the perforation and makes contact with the guide sleeve with the elastic rib. The lateral elasticity of the protective body also results in reliable contact along the periphery of the protective sleeve. Advantageous embodiments of the invention are characterized in the sub-claims. The protective sheet according to claim 2 can be punched out in a simple manner from a contact plate, for example made of brass, bronze, alpaca or chrome-nickel-steel. The guide sleeve may have along its periphery sharp-edged ribs indicating in the longitudinal direction, for example, in the form of a knurling, which sink into the smooth round contact opening. The above results in a plurality of secure contact points, which electromagnetically close the remaining slot. The protective sheet can be joined to the protective layer, for example, by welding. It can be made so thin that it does not hinder the integration of other components. The contact tabs according to claim 3 deviate obliquely from the plane of the material upon insertion of the guide sleeve and adapt under elastic tension to the external, for example, cylindrical jacket of the guide sleeve. The above results in a safe contact with a high lateral elasticity, which allows a corresponding tolerance compensation between the protective plate and the guide sleeve. Through the embodiment according to claim 4 it is possible to contact several guide sleeves with a single protective sheet. By means of the embodiments according to claim 5, the protective sheet makes contact with the protective layer in a simple manner. A particular advantage is that the protective sheet can be supplied already pre-assembled in the housing, so that any additional work in assembling the carrier of the groups is eliminated. Through the embodiment according to claim 6, the protection sheet is centered on the housing. The centering openings can be arranged in such a way that the protective sheet is fixed to them and thus securely fastened to the final assembly.

BRIEF DESCRIPTION OF THE DRAWINGS Next, the invention is illustrated in more detail with the help of an example of embodiment shown in the drawing. Figure 1 shows in perspective a section of a group carrier with a plug connector for a waveguide. Figure 2 shows parts of a carrier of groups according to Figure 1 just before assembling. Figure 3 shows the parts according to Figure 2 in another perspective view after assembly.

DETAILED DESCRIPTION OF THE INVENTION According to Figure 1, a carrier of groups for insertible groups, not shown in detail, has a rear wall conductive plate 1, shown in section, on the side of the groups of which a housing 2 is fixed. , which is provided with receptions 3 for guide sleeves 4 (Figure 2). An insertion group 5, shown in section, has an angular edge connector 6 with rod pins 7 connected to the waveguide, which can be plugged into the guide sleeves 4 of the housing 2 with non-visible plug-in rods. On the side opposite the housing 2 of the rear wall conductive plate 1, they can be plugged individually into the guide sleeves 4 with their plug-in rods 16, plug-in connectors 8 for waveguides. According to Figures 2 and 3, the rear wall conductive plate 1 is provided with cylindrical perforations 9, in which the guide sleeves 4 are introduced with play after assembly. On the side of the housing 2, the rear wall conductive plate 1 is provided with a protective layer 10, which is exposed at least in the area of the housing 2. A protective body formed as a protective plate 11 is disposed between the housing 2 and protective layer 10 and, in an assembled state, is fixed providing contact. It has centering perforations 12, with which it is fixed in centering pins 13 of the housing 2 arranged in a corresponding manner. The protective plate 11 is further provided with contact openings 14, in which narrow, radially extending star-shaped slots are arranged, between which contact tongues 15 are formed, the free ends of which are directed inwards. . The gap between the contact tabs 15 is narrower than the outer diameter of the guide sleeves 4 in the area of the protective plate 11. When the parts are assembled, the guide sleeves 4 pass through the contact openings 14 of the protective sheet 11, the contact tongues 15 being deviated within the bore and adapted under elastic tension to the outer jacket of the guide sleeves 4. The elasticity of the contact tongues 15 makes it possible to compensate for position variations between the metal sheet protection 11 and the guide sleeves 4 and, moreover, results in a plurality of secure contacts between the protective plate 11 and the guide sleeves 4.

Claims (6)

NOVELTY OF THE INVENTION Having described the above invention, it is considered as a novelty, and therefore, the content of the following is claimed as property: CLAIMS

1. A protection device for an arrangement for the plug-in connection of at least one waveguide with a group carrier, wherein the pin arrangement has a metal guide sleeve (4) for a plug-in connector (8) of the guide rail. waves, wherein the guide sleeve (4) is inserted in a perforation (9) of a back wall conductive plate (1) of the group carrier, wherein the rear wall conductive plate is provided with a protective layer ( 10) and wherein the protection device can make contact with the protective layer (10), characterized in that the protection device is configured as a protective body (for example, 11) to protectively bridge the interspace between the sleeve gula (4) and the rear wall conductive plate (1); because the protective body is provided with a contact opening (14) for peripheral contact with an outer jacket of the guide sleeve (4), and because the protective body (for example, 11), at least in the area of the The contact opening (14) is configured in such a way that it can be brought into contact with the guide sleeve (4) transversely to the latter.

2. A protection device according to claim 1, characterized in that the protection body is configured as a thin protective sheet (11) to cover the intermediate space; because the protective plate (11), by means of an external protective layer (10) of the rear wall conductive plate (1), can be contacted in a flat manner, and because the contact opening (14), at least by sectors , is narrower than the thickness of the contacted area of the guide sleeve (4).

3. A protection device according to claim 2, characterized in that the protective plate (11) of the contact opening (14) has outwardly extending grooves in the shape of a star, between which they conform deflecting contact tongues (15) of the plane of the protective sheet (11), the free ends of which point inwards form the contact opening (14).

4. A protection device according to claim 2 or 3, characterized in that the protective plate (11) is provided with several contact openings (14) for several guide sleeves (4) adjacent to each other.

5. A protection device according to claim 2, 3 or 4, wherein a receptacle (2) with receptions (3) for the guide sleeves can be fixed to the rear wall conductive plate (1). (4), characterized in that the protective layer (10) is arranged on the side of the rear wall conductive plate (1) directed towards the housing and in that the protective sheet (11) can be clamped between the housing (2) and the protective layer (10) of the rear wall conductive plate (1). 6 A protection device according to claim 5, characterized in that the sheet-like protection plate (11) is provided with centering openings (12) for centering pins (13) of the housing (2).