FR2788499A1 - HOUSING CLOSING DEVICE AND HOUSING COMPRISING SAME - Google Patents

Abstract

The closure device comprises at least one series (4) of rectilinear profile segments (5) carried by a flexible strip (1) equipped with tensioning means (2, 3) and is particularly suitable for closing a housing comprising a box (9) of polygonal shape and a cover (11) of corresponding shape.

Description

The present invention relates to a device for

  case closure and a case comprising it.

  Cases are known, in particular

  boxes containing a wireless transceiver, comprising

  both a box and a cover fixed to the box by a closure device formed by a curved profile having a U-shaped section and whose folded ends are

  equipped with tensioning means of the screw / nut type.

  Such devices provide satisfactory fixation.

  making the cover on the box but are relatively

  expensive because of their manufacturing technique consis-

  both to realize the bent profile by knurling a steel strip, which supposes the realization of a tool adapted to

bending radius of the profile.

  In addition, due to the stiffness of the curved profile, it can only be placed on circular housings having a radius close to the nominal radius of curvature of the profile so that it is necessary to provide different profiles each adapted to a case diameter and the installation or removal of the profile is not easy. In order to facilitate handling, it has been proposed to produce the closure device from a strip comprising lateral cutouts so that after knurling, sections of curvilinear profiles are obtained joined by sections of flat strips.

can flex easily.

  These closing devices are easy to handle.

  tion easier but it remains necessary to make the sections of sections curved according to the radii of curvature adapted to the diameter of each housing using a corresponding knurling tool. The cost of these devices remains

therefore high.

  According to the invention there is provided a housing closure device comprising at least one series of straight profile segments carried by a strip.

  flexible fitted with tensioning means.

  The profile segments can then be produced by inexpensive methods such as extrusion or, preferably, by cutting and unfolding a metal strip. Adaptation to different case diameters can then be easily achieved by varying the length of the profile segments as well as their spacing so that each profile segment can be applied simultaneously to a rim of the box and to the rim of the

  cover while pressing on them in a tangent.

  In the case of an embodiment by cutting and folding, different closing devices can therefore be

  made by simple adjustment of the cutting machine.

  According to other features of the invention, the profile segments are fixed to a metal strip by spot welding and the profile segments of a series are preferably made in one piece. The closure device can thus be produced entirely automatically and in the embodiment

  preferred we minimize the number of welding points required

  to ensure the series of fixing of profile segments. In addition, in this preferred embodiment, the series of profile segments can be fixed on a very flexible strip allowing the closure device to be mounted on a polygonal housing, in particular a square housing, offering a volume greater than that circular housing for the same size and also allowing easier shielding of the electronic circuit in the case

of a wireless transceiver.

  Other features and advantages of the

  vention will appear on reading the description which

  follows a particular non-limiting embodiment of the invention, in relation to the attached figures among which:

  - Figure 1 is a partial perspective view-

  Lement interrupted a closure device according to the invention, - Figure 2 is an enlarged perspective view of a series of straight profile segments according to the preferred embodiment of the invention, Figure 3 is a view in perspective with a

  cut away from a housing fitted with the device according to the invention

  tion. Referring to the figures, the case closure device according to the preferred embodiment illustrated comprises a carrier strip 1, for example a metal strip of the type used to make collars

  clamp, fitted at one end with a mechanism

  worm gear 2 and having slots 3 at the other end adapted to cooperate with the screw mechanism

endless 2.

  Furthermore, the case closure device comprises four modules 4 of profile segments generally designated at 5. As illustrated in FIG. 2, each module comprises a series of profile segments produced in one piece by cutting a metal strip for delimit wings 6 on either side of a central core 7, then fold the wings 6 to form

profile segments 5.

  As illustrated in Figure 3, each module 4 of straight profile segments is fixed to the strip

  carrier 1 by two welding points 8.

  The closure device according to the preferred embodiment illustrated is intended to be mounted on a housing comprising a box 9 and a cover 11 of

  substantially square shape with respective sides

  ment 10 and 12, slightly curved, the concavity of which faces the inside of the housing. The sides are connected by the box wall portions and also concave cover edge portions whose radius of curvature is smaller than the radius of curvature of the sides. In this embodiment, the modules 4 of profile segments are spaced from one another so as to come opposite the slightly curved sides of the housing when the closure device is presented with the profile segments straddling the cover and

  on a rim 13 of the box projecting outwards.

  When the closure device is put in place, the profile segments center the carrier strip 1 relative to the edges of the cover 11 and the flange 13. When the closure device is tightened by the mechanism 2, the segments of profile 5 are applied homogeneously so that the cover 11 is kept firmly applied to the box 13. At this

  the wings 6 of profile segments 5 are preferably

  inclined relative to each other and the cover

  key 11 has along its edge a bevel 14 on

  which the wings 6 are supported.

  Of course, the invention is not limited to the illustrated embodiment and can be brought to it.

  alternative embodiments without departing from the scope of the invention as defined by the claims. 25 In particular, although the series of profile segments have been described in the form of a module in one

  single piece, it will be possible to produce separate profile segments associated individually with the carrier strip 1, in particular in the case where the housing has an irregular shape. Conversely, the profile segments can be produced in one piece with the carrier strip 1 by cutting and folding a strip of appropriate width, which will make it possible to eliminate the assembly operation of the

  profile segments with the carrier strip.

Claims (7)

  1. Housing closing device, characteristic   laughed in that it comprises at least one series (4) of straight profile segments (5) carried by a flexible strip (1) equipped with tensioning means (2, 3).   2. Device according to claim 1, charac-   characterized in that the profile segments are made at   from a metal strip by cutting and folding.   3. Device according to claim 2, character-   risé in that the profile segments (5) are fixed to a   metal strip (1) by spot welding (8).   4. Device according to one of claims 1 to   3, characterized in that the profile segments of a   series (4) are made in one piece.   5. Housing characterized in that it comprises a   box (9) of substantially polygonal shape and a cover   key (11) of corresponding shape, and in that it comprises   a closure device according to one of claims 1 to 4.   6. Housing according to claim 5, characterized   in that the box and the cover are sensibly shaped squarely square.   7. Housing according to claim 5 or the res-   dication 6, characterized in that the box and the cover   key have curved sides having a concavity facing inside the housing.