FR2616035A1 - PLASTIC INSERTING HOUSING FOR ELECTRICAL INSTALLATION DEVICES, ON A DEVICE SUPPORT BAR - Google Patents

Abstract

a) Snap-on plastic housing, for installation devices, on a device support bar. b) characterized in that the click arm 7, 8 is formed in a relatively rigid housing part, inside the housing 1, in an area between the outer ridges of the support bar which lies below and emerges out of the housing 1, through a housing opening 9 facing the support bar 2. c) The invention relates to a snap-on housing made of plastic, for installation devices, on a device support bar .

Description

Snap-in plastic housing for

  electrical installation wires, on a support bar

of appliances ".

The present invention relates to a

  snap-on housing made of plastic material for

  installation, on a device support bar with at least one click arm, with a stub

  meshing under the snap-fastening strips of the upper bar

  port and which is formed to provide a detachable fastening

  the snap-in strips of the support bar and

  are opposed to each other, and which is elastically deformable

  when opening the housing on the support bar

  Harbor. CH-PS 534 969 discloses a plastic sump on a support bar of the kind mentioned at the beginning. Sure

  this plastic casing which is provided for a

  Similarly, two elastically deformable snap-on arms are formed externally on two opposite housing walls and they mesh under the two snap-fastening strips of the support bar.

  stubborn heels that are formed at the end zones

  snap arm when the housing is snapped.

  A disadvantage of this arrangement lies in the fact that the snap arms protrude laterally from the plastic casing and are therefore an inconvenience. Another disadvantage is that a relatively weak force

  is necessary during the extraction, on the crankcase,

  that the plastic casing is not

  on the device support bar. The snap arm bends out of the device support bar and sneaks next to the edge of the device support bar. The object of the present invention is to create a plastic casing snap on a barupport apparatus of the kind mentioned at the beginning,

  which does not have any troublesome pieces emerging later

  can be used to obtain an arra-

  of the device support bar which is

high level.

  The problem is solved in that the snap arm is formed on a relatively rigid housing portion, inside the housing, in a

  area between the outer edges of the bar-

  support that is underneath and that it emerges out of the housing, through a housing opening turned towards the support bar. These measures make it possible to obtain

  snap arm does not protrude laterally from the car-

  ter so that it no longer disturbs and that the force of ar-

  removal of the casing from the support bar is relative

  high level. Because of this, that is the click arm

  formed on a casing part arranged in the

  In the area between the outer edges of the support bar underneath, when the crankcase

  forces the click arm to kiss the support bar.

  and thereby increases the pulling force.

  The opposite edges of the casing opening, which are located transversely to the longitudinal direction of the support bar, can

  be provided as a stop for the snap arm. who

  by bending. This measure makes it possible to avoid

  snap arm formation, above the limit of the

  elastic deformation and, as a result, avoid

  dommagement. 'In order to detach the heel

  stopping of the support bar, with a simple means, an ap-

  pendentifice is foreseen, acting on the area of ex-

  arm of the snap-in arm used to detach from the support bar the stub which acts on the arm to

click.

It is advantageously provided two

  snap arms, located parallel to a certain distance

  one of the other and a cross

  binding their end zones and carrying at least one ta-

  Stop ion. The stop stub may, on this occasion, be

  located in the middle zone of the transverse traverse

  the. When snapping and detaching the stop heel, respectively out of the support bar, the transverse cross member will be urged torsionally

  by the support bar and on this occasion, there is

  the elasticity of the stopping heel acting with the snap arms. An enterable appendix, used to

  detach the stubbing heel acting with the arms to de-

  click, from with the support bar, is arranged in the middle area and the side of the crossbar which is

opposite to the stub heel.

An example of realization of the in-

  The invention is described in more detail in the following, using the accompanying drawings. It is represented: FIG. 1: the side of a plastic casing which is turned towards the planned support bar and

  - figure 2: a section by the middle of the

  bottom of the plastic housing.

  Figures 1 and 2 represent only

  the lower part of a plastic casing

  which is important for the description of the pre-

  this invention. The plastic casing 1 is

  determined to receive electrical appliances from

  such as protections, thermal and / or dynamic overcurrent trip devices, motor protection circuit breakers, terminal blocks, etc. Figure 1 shows the crankcase

  made of plastic material 1, on the side facing the bar

  device support 2 provided and shown in Figure 2.

  The fixed stubs 3, 4, which are shown in the straight halves of FIGS. 1 and 2, are formed at

  this lower part and mesh under a band of

  ratcheting 5 of the support bar, when the casing 1

is snapped.

  A relatively rigid housing portion 6 is formed inside the housing 1 and has in our embodiment the shape of a rib passing through the entire housing 1. Two snap arms 7, 8 are formed on this housing part 6, spaced apart from one another and which emerge out of the casing 1, through a casing opening 9. The two end zones of the snap arms 7, 8 are connected together by a transverse cross member 10 which is formed.-A stopping heel 1i1 is shaped danis 1 zonoe the middle 'of the transverse cross member 10 and meshes under the snap-fastening strip 12 of the support bar 2, in Figure 2,

  when the casing 1 is snapped.

An annular appendage 13

  is formed in the middle zone of the trans-

  This appendix 13 may, for example, be pulled from the outside of the casing 1 in a direction away from the casing 1, for example with a screwdriver, the heel of stop

  11 being on this occasion detached from the support bar 2.

  In this state of the snap arms 7, 8, the casing 1 can

  be removed from the support bar 2.

  The edges 14, 15 of the housing opening 9 which are opposite, transversely to the longitudinal direction of the support bar serve as a stop for the snap arms 7, 8. With these stops,

  snap arms 7, 8 can not be folded over

  above the limit of elastic deformation or broken.

The casing 1 is placed on the bar

  support 2, while meshing the two heels of

  3, 4 with one of the bar snap strips 5

  2, which is the right in Figures 1 and 2. By a tilting movement of the housing 1, it is

  then in contact with the oblique surface which is

  below the other elastic stopper 11, with

  the edge of the support bar 2. At another flip-flop

  1, the resilient stub 11 is low

  abutted by the slanted surface sliding on the edge of the support bar 2, until it clicks under the

snap band 12.

  When the casing 1 snapped on the support bar 2 is torn off, a force is produced pushing the elastic stop lug 11 towards the support bar 2. This force which forces the snap arms 7, 8 to kiss the support bar 2 appears

  because the snap arms 7, 8 are formed on parts

  relatively rigid casing elements 6, inside the

  casing 1, between the outer edges of the support bar

  port 2 which is below. By this measure,

  requirements for the crankcase and concerning the

  this tearing are practically fulfilled in all

cases that arise.

  The crankcase detachment

  1 of the support bar 2 is effected

  Appendix 13 in the direction away from the car-

  ter 1, making the elastic stop heel 11

Z 103 [.

  and the housing 1 is detached from the support bar 2. The appendix 13 can be actuated in the

  simpler, using a screwdriver.

Claims (4)

R E V E N D I C A T I 0 N S   1) Snap-on plastic housing, for installation devices, on a device support bar, with at least one snap arm carrying a stopper stubbing under the strips of   ratcheting of the support bar and which is formed to pre-   see detachable attachment to the snap-fastening strips of the support bar and which are opposed to each other, and which is elastically deformable when opening the housing on the support bar, characterized in that the snap arm (7, 8) is formed in a relatively rigid portion of the housing (6), inside the housing (1), in an area between the outer edges of the support bar which is below and emerges from the housing (1) through a crankcase opening (9) to the support bar (2). ) Plastic casing se-   1, characterized in that the edges   (14, 15) which are opposite and arranged transversely   with respect to the longitudinal direction of the support bar (2) are provided as stops for the arm   snap (7, 8) which opens by folding.   3) Plastic housing se-   one of claims 1 or 2, characterized in that   an appendage (13) which can be grasped from outside the casing (1), acting on the end zone of the snap arm, is provided for detaching from the support bar (2), the stop heel (11). ) acting with the click arm (7, 8). 4) Plastic housing   according to one of claims 1 to 3, characterized in that   two snap arms (7, 8) are provided, parallel to each other at a distance from one another and a transverse cross member (10), connecting their end zones and carrying at least a stop stub (11).    Plastic casing according to claim 4, characterized in that the heel   (11) is in the middle zone of the work area. transverse shed (10). 6) Plastic housing   according to one of claims 4 to 5, characterized in that   an appendage (13) for detaching the stub (11) acting with the snap arms (7, 8) from the support bar (2) is arranged in the middle and side of the transverse cross member (10) which is opposite to the stopping heel (11), and can be grasped from the side outside the housing (1).