FR2658379A1 - CONNECTING HOUSING FOR ELECTRICAL APPLIANCES. - Google Patents

Abstract

Connection box for electrical appliances, the lower part of which (2) or the base (1) can be inserted into a cutout in the wall of an appliance (12); at least one elastic stop hook (13) provided at the lower part which is taken up on the inner edge of the cutout, the stop hook (13) being able to be released by pivoting, and a cover (5) which can be snapped into closed position on the lower part (2). Until now there is the risk that the elastic stop hook is released untimely from the hooking position. With this invention this is avoided by the fact that the cover (5) is equipped with at least one locking notch (15) which engages, when the cover (5) is closed, on the stop hook ( 13) of the lower part (2), blocking it to prevent the cover from opening.

Description

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  CONNECTING HOUSING FOR ELECTRICAL APPLIANCES

  The invention relates to a connection box

for electrical appliances.

  Such connection boxes, on the one hand the lower part can be removably attached in a recess of the wall of an apparatus by an elastic stop hook and, on the other hand, the lid can be latched in the lower part or the sole of the housing, are known as cable connection boxes, for example that of the

DE 34 30 756 Ai.

  In order to be able to remove the housing of the apparatus when necessary, the stop hooks can be released from their stop position by exerting pressure in the direction

  from the bottom of the case.

  Currently, there is the possibility that the electrical stop hook will move unexpectedly, or is displaced

  by an unauthorized person from his stopping position.

  This risk can be caused in particular by differences, or even variations in the thickness of the wall. Indeed, the wall of the apparatus is generally subjected to a treatment.

  galvanizing, painting or enameling after stamping

  This treatment can cause the formation of bulges or beads, called "noses" at the edges of the cut of the wall of the device, on which the hooks can not anchor properly and that modify

  in a negative manner the angle of inclination of the stop hook.

  If the casing then undergoes significant tensile forces, that is to say pulling forces, particularly at an angle of about 900 relative to the wall of the apparatus, the beads of the noses can contribute to the Liberation

or tearing off the hooks.

  The invention aims to solve this problem and to avoid this untimely exit of the hooks of the party

  bottom of the housing outside their anchoring position.

  The solution of this problem is obtained by means of locking notches made in a suitable position on the lid S 'engage in the closed lid position on the corresponding locking hooks of the lower part, thus avoiding inadvertent pivoting of the hooks The hooks

  stoppers are anchored more securely in the

  but can be easily unlocked after opening

of the lid.

  For more details on this invention, we describe

  Here is an example of execution, explaining also

the secondary characteristics.

  Fig 1 Perspective view of the execution example.

  Fig 2 Next section Il-Il in Fig 1, posed in the

wall of a device, open.

  Fig 3 Section following Fig 2 with closed lid.

  Three screw terminals 3 are provided on the base 1 of the lower part of the housing 2 for the three conductors

  a power cable that can be attached to the

  bottom of the housing by means of a fastener / discharge clamp

in traction 4.

  The lid 5 is secured to the lower part

  upper case 2 by a film hinge 6.

  The wall 5a of the lid 5, opposite the hinge, has an elastic stop hook 7 which, when the lid is closed, 3 - engages in a hole 8 of the base 1 Through an opening 9 in the wall before Ea of the cover, the stop hook 7 can

  be removed from its anchoring position for opening the lid.

  The lower part 2 of the housing has two lateral sealing flanges 10 and, beneath the hinge 6 of the lid, a rigid bearing edge 11, so that when the lower part is mounted in the cutout of a wall 12, the rigid bearing edge It carries behind the device wall 12 while the lateral sealing flanges 10 rest on the edge of the upper or outer side of the cutout

in the device wall.

  The side of the lower part 2 opposite the hinge and the

  rigid support edge 11 has at least one elastic stop hook.

  This hook 13 is disposed at the lower end of a receptacle or housing 14 made on the lower part or

the sole.

  According to the present invention, the front wall 5a of the cover, opposite to the hinge 6, has for each locking hook 13 a locking catch 15 which,

  closed, adapt in their stop hook engaged in the de-

  cutting the device, the locking notch 15 is introduced into the receptacle 14 necessary anyway for the race

  engagement of the stop hook 13 (see Fig 2 and 3).

  Each lock notch 15 has a tip

contact point 15 a.

  The hook (s) 13 is (are) provided (s) at the end of its upper inclined face 13a, a rib 13b, itself having a beveled face 13 c facing the notch of This rib 13b engages in a housing 16

of the wall 5a of the cover 5.

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  Blocking and interlocking are

  Efficiently effective when the engagement receptacles of the locking hooks are substantially fully occupied by the locking notches, thus when the section of the locking catch corresponds to that of the receptacle. Of course, the junction box can have

  another form For example, instead of a film hinge

  Alternatively, one or two locking hooks may be provided. The connection box may be constructed not for its usual use, the mains connection, but for any other cable connection. Finally, such a housing may also be designed for receive printed circuit boards, so

  practically as an envelope of materials.

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Claims (3)

  1 Connection box for electrical appliances, whose lower part (2) or the base (1) is recessed in a cutout of the wall of an appliance (12), o at least one elastic stop hook (13) provided at the bottom resumes on the inner edge of the cut, this hook hook (13) can be released by pivoting, and o a cover (5) can be snapped in closed position on the lower part (2), characterized in that the cover (5) is provided with at least one locking catch (15) which engages, when the cover (5) is closed, on the catch (13) of the lower part. (2) blocking it to prevent the lid from opening. 2 junction box according to claim 1, characterized by the presence of a bevelled face (15 a) on the or the locking notches (15).   3 connection box according to claim 1 or 2, characterized in that the one or more locking hooks (13) of the lower part (2) is (are) provided with a rib (13b), comprising an inclined face (13c), engaging in a   receptacle (16) on the edge of the lid.