Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
  • H01H23/02—Details
  • H01H23/04—Cases; Covers
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
  • H01H23/02—Details
  • H01H23/12—Movable parts; Contacts mounted thereon
  • H01H23/16—Driving mechanisms
  • H01H23/20—Driving mechanisms having snap action
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/086—Assembled boxes
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/10—Distribution boxes; Connection or junction boxes for surface mounting on a wall
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/14—Fastening of cover or lid to box
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2221/00—Actuators
  • H01H2221/036—Return force
  • H01H2221/044—Elastic part on actuator or casing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H2221/00—Actuators
  • H01H2221/09—Flexible integral part of housing
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/081—Bases, casings or covers
  • H02G3/083—Inlets
  • H02G3/085—Inlets including knock-out or tear-out sections
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets

Definitions

• the present invention relates generally to the field of insulating electrical boxes intended to house electrical mechanisms (typically, outlet or switch or detection mechanisms).
• It relates more particularly to electrical boxes to be attached projecting from the wall walls, and in particular waterproof electrical boxes.
• the invention relates more exactly to an electrical box in two parts, comprising a support plate and a frame, the support plate and the frame comprising complementary attachment means which are movable relative to each other between a fixing position of the frame on the support plate and a position of release of the frame relative to the support plate.
• latching tabs When it comes to latching tabs, it is necessary to act simultaneously on all the latching lugs with several tools, which in practice proves particularly difficult to achieve and which often causes the breakage of a part. of these latching tabs.
• the present invention proposes a new fixing system which allows easy assembly of the frame to the support plate and equally easy disassembly.
• an electrical box as defined in the introduction is proposed and in which: - the frame comprises at least one lever adapted to place the attachment means in the release position,
• an elastic return means adapted to automatically return the attachment means to the attachment position
• the attachment means are provided to automatically cooperate together during the assembly of the support plate with the frame.
• the retaining means make it possible to simultaneously maintain all the attachment means in the release position, which makes it possible to extract the frame from the support plate without difficulty.
• the retaining means in fact makes it possible to retain the attachment means in the release position while the frame is in the coupled position on the support plate, without any manual force having to be exerted on any of the elements of the electrical box (and in particular on the attachment or elastic return means).
• This retaining means is, preferably, a latching means adapted to cooperate with the attachment means.
• a ramp is provided which makes it possible to force the attachment means to move towards the release position, without reaching this release position, by means of the assembly of the frame on the support plate, this ramp being shaped to allow the attachment means to return to the attachment position when the frame reaches its assembled position on the support plate;
• the attachment means of the support plate comprises a notch which is fixed on the support plate, and the frame attachment means is carried by the lever and is adapted to be hooked to said notch;
• the frame attachment means comprises a notch which is fixed on the frame
• the attachment means of the support plate comprises an elastically deformable lug adapted to be hooked to said notch
• the lever is adapted to deform the lug elastically deformable in the release position
• the retaining means comprises a recessed notch in the lever, adapted to retain the elastically deformable tab in the release position; - the retaining means is formed with the support plate;
• the retaining means comprises two uprights which are arranged on either side of the lever and which are at least partly elastically deformable to move apart in order to allow the lever to pass in one direction and to automatically return to their initial position in order to hold the lever in the other direction;
• Each lever is formed in one piece with the frame and is elastically deformable
• Each lever is attached to a part of the frame so as to have a single pivoting mobility with respect to this part of the frame; - Each lever is adapted to pivot relative to said part of the frame about an axis perpendicular to a direction of assembly of the frame on the support plate;
• Each lever is adapted to pivot relative to said part of the frame about an axis parallel to a direction of assembly of the frame on the support plate;
• Each lever has a gripping part accessible to a finger of a user in order to maneuver it;
• Each lever has an operating part accessible to a tool for operating it;
• the invention also provides an electrical box comprising an electrical box as defined above and a cover to be attached to the front of the frame of the electrical box, said cover comprising a locking heel adapted to be placed against the lever for the 'prevent moving.
• the invention also proposes an assembly comprising an equipment mechanism, a cover and an electrical box as mentioned above, inside which the equipment mechanism is fixed and to the front of which the cover is fixed.
• Figure 1 is a schematic exploded perspective view of an electrical box comprising an electrical box according to a first embodiment of the invention and a cover;
• FIG. 2 is a schematic exploded perspective view of the frame of the electrical box of Figure 1;
• FIG. 3 is a schematic perspective view of a lever of the frame of the electrical box of Figure 1;
• FIG. 4 is a schematic perspective view of a detail of the support plate of the electrical box of Figure 1;
• FIG. 5 is a schematic sectional view of part of the electrical box of Figure
• FIG. 6 is a detail view of zone VI of FIG. 5;
• FIG. 7 is a schematic sectional view of the part of the electrical box of Figure 5, illustrating a second step of assembling the frame to the support plate;
• FIG. 8 is a schematic sectional view of the part of the electrical box of Figure
• FIG. 9 is a schematic cutaway perspective view of part of the electrical box of Figure 1;
• FIG. 10 is a schematic perspective view of the electrical box of Figure 1, illustrating a first step allowing the extraction of the frame relative to the support plate;
• FIG. 11 is a schematic perspective view of the electrical box of Figure 1, illustrating a second step allowing the extraction of the frame relative to the support plate;
• - Figure 12 is a schematic exploded perspective view of an electrical box according to a second embodiment of the invention.
• FIG. 13 is a schematic perspective view of a lever of the frame of the electrical box of Figure 12;
• FIG. 14 is a schematic cutaway perspective view of the lever of Figure 13;
• FIG. 15 is a schematic perspective view of a detail of the support plate of the electrical box of FIG. 12;
• FIG. 16 is a schematic cutaway perspective view of part of the electrical box of Figure 12, illustrating a first step of assembly of the frame to the support plate;
• FIG. 17 is a schematic cutaway perspective view of the part of the electrical box of Figure 16, illustrating a second step of assembling the frame to the support plate;
• FIG. 18 is a schematic perspective view of the electrical box of Figure 12, illustrating a first step allowing the extraction of the frame relative to the support plate;
• FIG. 19 is a schematic perspective view of the electrical box of Figure 12, illustrating a second step allowing the extraction of the frame relative to the support plate;
• FIG. 20 is a schematic exploded perspective view of a section of an electrical box according to a third embodiment of the invention.
• FIG. 21 is a diagrammatic cutaway perspective view of a lever of the frame and of a corresponding part of the support plate of the electrical box of FIG. 20;
• FIG. 22 is a schematic sectional view of part of the electrical box of Figure 20, illustrating a first step of assembling the frame to the support plate;
• FIG. 23 is a schematic sectional view of the part of the electrical box of Figure 22, illustrating a second step of assembling the frame to the support plate;
• FIG. 24 is a schematic sectional view of the part of the electrical box of Figure 22, illustrating a third step of assembling the frame to the support plate;
• FIG. 25 is a schematic sectional view of the part of the electrical box of Figure 22, illustrating a fourth step of assembling the frame to the support plate;
• FIG. 26 is a schematic sectional view of the part of the electrical box of Figure 22, illustrating a fifth step of assembling the frame to the support plate;
• - Figure U is a schematic sectional view of the electrical box of Figure 20, illustrating a first step allowing the extraction of the frame relative to the support plate
• - Figure 28 is a schematic sectional view of the electrical box of Figure 20, illustrating a second step allowing the extraction of the frame relative to the support plate;
• FIG. 29 is a schematic exploded perspective view of a section of an electrical box according to a fourth embodiment of the invention.
• FIG. 30 is a schematic perspective view of a lever of the frame of the electrical box of Figure 29;
• FIG. 31 is a schematic perspective view of part of the electrical box of Figure 29, illustrating a first step of assembling the frame to the support plate;
• FIG. 32 is a schematic sectional view of the part of the electrical box of Figure 31, illustrating a second step of assembling the frame to the support plate;
• FIG. 33 is a schematic perspective view of the part of the electrical box of Figure 31, illustrating a third step of assembling the frame to the support plate;
• FIG. 34 is a schematic perspective view of an assembly comprising the electrical box of Figure 1 and a socket mechanism
• FIG. 35 is a schematic perspective view of an assembly comprising the electrical box of Figure 1 and a switch mechanism.
• it is a waterproof electrical box to be attached projecting on a wall wall and arranged to receive internally an electrical equipment mechanism such as a switch mechanism 3B (FIG. 35) or 3A socket (figure 34) or detector (smoke, light, etc.).
• an electrical equipment mechanism such as a switch mechanism 3B (FIG. 35) or 3A socket (figure 34) or detector (smoke, light, etc.).
• the terms “front” and “rear” will be used with respect to the direction of gaze of the installer of the electrical box on the wall to which the latter is attached.
• the wall will be a room wall partition
• the front of an element will designate the side of that element facing the interior of the room and the rear will designate the side of that element facing the interior of the room. outside the room.
• the terms “interior” (or “internal”) and “exterior” (or external ”) will be used in relation to the electrical box itself, to denote respectively the side of an element facing the center of the unit. electrical box and the side of an element facing the outside of this box.
• the electrical box 1 generally has the same shape.
• support plate 10 a rear part
• frame 20 a front part
• the support plate 10 is designed to be fixed to a support such as for example a wall partition, and to support the fitting mechanism 3A, 3B, while the frame 20 has a function of protecting this mechanism and of supporting the device.
• interface means allowing the user to interact with the switchgear mechanism 3A, 3B.
• the support plate 10 comprises a base 100 which here has a general parallelepipedal shape but which could of course have a different shape, in particular cylindrical.
• This base 100 open at the front, comprises a square base 102 bordered by a side wall 101 which rises from the base 102, substantially perpendicular thereto.
• the side wall 101 then follows a generally square contour.
• the bottom 102 has circular orifices 102A of small dimensions, here closed by pierceable sealing caps, through which screws can be screwed for fixing the support plate 10 to the wall partition.
• the bottom 102 also has a central opening 102B of larger dimension, here closed by a tear-off sealing cap for the passage of an electrical sheath of the ICTA type or of an electrical cable, for example of the U1000R02V or H07RNF type or else d 'an IRL type tube.
• the side wall 101 carries for its part, on opposite panels, two cable entry end pieces 101A of greater heights than the rest of the side wall 101, each having an opening 101B which is closed by a tear-off sealing cap. for the passage of an ICTA type electrical sheath or an IRL type tube or an electrical cable.
• the frame 20 for its part comprises a body 200 intended to extend in the extension of the side wall 101 of the base 100 of the support plate 10.
• this body 200 comprises two distinct parts assembled together, including a rear part called “side wall 220” and a front part called “extension 210”.
• the side wall 220 also follows a generally square outline and has a rear edge designed to interlock with the front edge of the side wall 101 of the pedestal 100.
• the interlocking of the side wall 220 of the body 200 of the frame 20 on the base 100 of the support plate 10 is here produced thanks to the particular shape of the rear edge of said side wall 220, which delimits a groove 221 open towards the rear and adapted to engage on the front edge of the side wall 101 of the base 100 of the support plate 10. It is observed here that a peripheral seal 180 is provided at this edge. front, all along the latter, so as to ensure the seal between the frame 20 and the support plate 10.
• the extension 210 for its part forms a frame designed to fit together and snap onto the front edge of the side wall 220.
• the body 200 of the frame 20 is produced by the association by clipping the side wall 220 and of the extension 210.
• the extension 210 comprises four clips arranged at the four corners, which are housed in the corresponding shaped housings provided at the four corners of the frame 20.
• the body 200 makes it possible to simplify its design by molding.
• the body of the frame could be made in one piece, for example in molded plastic material.
• this extension 210 is specifically designed to receive a cover 2 so that the electrical box 1 forms therewith an electrical box.
• this hubcap 2 has here a structural part 2B in the form of a frame, equipped with teeth (not visible) for its snap-fit onto the extension 210.
• the invention relates more specifically to the elements of the electrical box 1 which allow the support plate 10 and the frame 20 to be attached together. Indeed, if the body 200 of the frame 20 is designed to fit on the base 100 of the support plate 10, this interlocking only ensures a relative blocking of the frame 20 with respect to the support plate 10 in the plane (x , y) (which is parallel to the plane of the wall partition). On the other hand, this interlocking does not make it possible to block the frame 20 with respect to the support plate 10 along the z axis (which is orthogonal to the plane of the wall partition).
• the support plate 10 and the frame 20 include complementary attachment means.
• the attachment means of each set are arranged such that:
• the attachment means 260, 1260, 3253 provided on the frame 20 is movable relative to the body 200 of the frame 20, and / or that
• the attachment means 2110 provided on the support plate 10 is movable relative to the base 100 of the support plate 10.
• This set of two attachment means can thus have a fixing position in which the frame 20 is fixed on the support plate 10 and a release position in which the frame 20 is free to be withdrawn from the support plate 10. It can also have all the intermediate positions between these two extreme positions.
• the electrical box 1 furthermore comprises:
• an elastic return means 252, 3255 adapted to automatically return the set of fastening means to the fixing position
• lever 250, 1250, 2250, 3250 designed so that an installer can easily bring the attachment means into the release position
• the attachment means 110 provided on the support plate 10 is in the form of a notch 110A which is formed integrally with the base 100 of the support plate 10, for example by molding a plastic material.
• This notch 110A projects from the inside face of the side wall 101 of the base 100.
• this notch 110A has a pointed profile.
• the front face of this notch 110A thus forms a ramp 111, the function of which will be detailed below.
• the lever 250 is in the form of a rectangular plate bordered by two stiffening flanks 255. It comprises, in the central part, a shaft 253 which extends between the two flanks of stiffening 255 and which makes it possible to articulate the lever 250 on the body 200 of the frame 20, around an axis parallel to the plane (x, y).
• the internal face of the side wall 220 of the body 200 of the frame 20 comprises for this purpose a reception cradle open towards the front and inside which the shaft 253 can be snapped.
• the attachment means provided on the frame 20 to cooperate with the notch 110A of the support plate 10 is carried by the lever 250.
• the rear end of the lever 250 has an opening 260 adapted to engage on the notch 110A of the base 100 of the support plate 10.
• This opening 260 has in particular a rear edge 261 adapted to hook onto the rear face 112 of the notch 110A so as to block the frame 20 on the support plate 10.
• the “fixing position” of the attachment means of the frame 20 on the support plate 10 therefore corresponds to the position of the lever 250 in which the opening 260 of the lever 250 is engaged on the notch 110A.
• the "release position" of the attachment means of the frame 20 on the support plate 10 corresponds for its part to the position of the lever 250 in which the opening 260 of the lever 250 is entirely disengaged from the notch 110A and is located at a distance. of the last. In this position, the outer face of the front end of the lever 250 comes to rest against the inner face of the side wall 101 of the base 100 of the support plate 10.
• the internal face 251 of the front end of the lever 250 is provided to be accessible to the installer so that the latter can tilt the lever 250 from its fixing position to to its release position by simply pressing the finger.
• the return means are provided to automatically return the lever 250 to the fixing position.
• they comprise here an elastically deformable strip 252, which has been formed integrally with the rest of the lever 250 by molding of a plastic material, and which extends from the shaft. 253 outward and forward.
• This strip 252 is thus provided to rest against the inner face of the side wall 220 of the body 200 of the frame 20.
• this strip 252 is designed so that the support of the installer's finger on the internal face 251 of the front end of the lever 250 can counter the restoring force exerted by the strip 252, so as to that it is possible to manually tilt the lever 250 into the release position.
• the frame 20 For its mounting on the support plate 10, the frame 20 is attached in the z direction.
• This ramp 111 then makes it possible to force the lever 250 to switch to its release position (see FIG. 7) through the depression of the frame 20 on the support plate 10 (without the installer having to act directly on lever 250).
• the hubcap 2 includes a locking heel 2A which projects rearward and which, when the hubcap 2 is clipped onto the extension 210 of the frame 20, is suitable for press against the outer face of the front end of the lever 250. This support then prevents the lever 250 from tilting towards its release position.
• a retaining means 120 which is here designed to hold the lever 250 in the released position.
• this retaining means 120 is formed with the support plate 10.
• FIG 4 it comprises here two uprights 121, 122 which rise from the bottom 102 of the base 100 of the support plate 10 and which are arranged on either side of the notch 110A and of the lever 250 .
• These two uprights 121, 122 are at least partly elastically deformable so as to move away from one another when the lever 250 swings from its fixing position to its release position, so as not to form an obstacle to its passage.
• the two uprights 121, 122 carry facing ribs 121A, 122A which extend over the entire height of these uprights.
• the lever 250 has in correspondence two ribs 255A projecting from the opposite faces of its two stiffening flanks 255.
• the installer can release these levers and then exert a tensile force on the frame 20 along the z axis (towards the front) so as to remove the frame 20 of the support plate 10 (see figure 11).
• the ribs 255A of the lever 255 cease to cooperate with those of the uprights 121, 122, so that the lever 250 is automatically returned to the fixing position.
• the frame 20 is again ready to be installed on the support plate 10.
• the ramp 111 of the notch 110A is designed so that, during the assembly of the frame 20 on the support plate 10, the lever 250 only swings over part of its travel. In this way, the lever 250 does not swing enough for its ribs 255A to pass between the ribs 121A, 122A of the uprights 121, 122. This is the reason why, when assembling the frame 20 on the support plate 10, the lever 250 is not found blocked in the release position but is on the contrary automatically recalled to the fixing position.
• the set of attachment means differs from that shown in Figures 1 to 11 in that the lever does not form a separate part of the body 200 of the frame 20, but is formed integrally from a single part with the body 200, here by molding a plastic material.
• the attachment means 110 provided on the support plate 10 is here again in the form of a notch 110A.
• the lever 1250 is in the form of a rectangular plate 1251 bordered by two stiffening flanks 1255.
• This lever 1250 is attached to the body 200 of the frame 20 only by its front end. It is elastically deformable at its junction to the body 200, which thus forms a kind of hinge. It can thus be considered that the lever 1250 is articulated on the body 200 about an axis parallel to the plane (x, y).
• lever 1250 is bent towards the inside of the electrical box, so as to form a flange 1256.
• This flange 1256 has a slot 1257 into which the end of a screwdriver 400 can be inserted (see figures 18 and 19).
• the installer can thus force the lever 1250 to swing towards the interior of the electrical box.
• the lever 250 comprises, on the side of its front end, a return 1258 which extends orthogonally to the rectangular plate 1251, towards the inside the box electric.
• This return has an end edge which is curved so as to be able to match the shape of the shank of the screwdriver 400.
• lever 250 to have no return and for the side wall 220 of the body 20 to have an inner peripheral rib, which runs along the front edge of this side wall and whose inner face has curved zones 1258 ′ provided to match the shape of the shank of the screwdriver 400.
• the rectangular plate 1251 of the lever 1250 has, on the side of its rear end, an opening 1260 adapted to engage on the notch 110A of the base 100 of the support plate 10.
• the “fixing position” of the attachment means of the frame 20 on the support plate 10 therefore corresponds to the rest position of the lever 1250 (that is to say to the non-elastically deformed position of the lever).
• the opening 1260 of the lever 1250 is engaged on the notch 110A.
• the lever 1250 extends parallel to the side wall 220 of the body 200 of the frame 20.
• the “release position” of the attachment means of the frame 20 on the support plate 10 corresponds for its part to the position of the lever 1250 in which the opening 1260 of the lever 1250 is entirely released from the notch 110A and located at a distance of this last.
• This elastically deformed position of the lever 1250 is achieved using the screwdriver 400.
• the return means which it will be recalled that they are intended to automatically return the lever 1250 to the fixing position, are formed by the lever 1250 itself, in that its elastically deformable character ensures its return to the fixing position when no effort is exerted on it.
• This ramp 111 then makes it possible to force the lever 1250 to switch to its release position (see FIG. 16) through the depression of the frame 20 on the support plate 10 (that is to say without the installer does not have to act directly on lever 1250).
• the rear end edge of the lever 1250 is here bevelled so as to facilitate its sliding on the notch 110A.
• the retaining means 120 which it will be recalled that it is designed to hold the lever 1250 in the release position, is here again formed of two uprights 121, 122 which rise from the bottom 102 of the base 100 of the support plate 10 and which are arranged on either side of the notch 110A and of the lever 1250.
• the two uprights 121, 122 are devoid of ribs and are therefore designed to tilt entirely in opposite directions during the passage of the lever 1250 from its fixing position to its release position.
• these uprights 121, 122 are bevelled at their ends, which form ramps 121B, 122B.
• the lever 1255 is here flanked in correspondence with two lateral teeth 1254 which project from the stiffening flanks 1255 and which are designed to slide on these ramps 121B.
• These lateral teeth 1254 each have an inclined inner face so as to facilitate the elastic deformation of the uprights 121, 122 during the passage of the lever 1250 from its fixing position to its release position.
• Each lateral tooth 1254 has an outer face orthogonal to the stiffening flank 1255 from which it extends, which is designed to bear against the ramps 121B, 122B in order to keep the lever 1250 in the release position.
• the ramp 111 of the notch 110A is designed so that, during the assembly of the frame 20 on the support plate 10, the lever 1250 only swings over part of its stroke. In this way, the lever 1250 does not tilt enough for its side teeth 1254 to press against the uprights 121, 122. This is the reason why, when assembling the frame 20 on the support plate 10, the lever 1250 is not found blocked in the release position but is on the contrary automatically returned to the fixing position.
• FIGS 20 to 28 there is shown a third embodiment of the invention.
• the means for attaching the frame 20 to the support plate 10 are not carried by the lever but by the body 200 of the frame 20. These are latching means. The main function of the lever is then to force the attachment means to disengage from one another.
• the attachment means provided on the frame 20 is in the form of a notch 2240 which is formed integrally with the body 200 of the frame 20, for example by molding a plastic material.
• This notch 2240 projects from the inner face of the side wall 220 of the frame 20. It has a front face extending in a plane (x, y) and a rear face inclined relative to this plane so as to that this notch 2240 has a trapezoidal profile. The rear face of this notch 2240 thus forms a ramp 2241.
• the attachment means provided on the support plate 10 is in the form of an elastically flexible tab 2110 which is formed in one piece with the base 100 of the support plate 10, for example by molding of a plastic material.
• This resiliently flexible tab 2110 rises from the bottom 102 of the base 100 of the support plate 10, along the lateral face 101 of this base 100. It has an opening 2112 adapted to engage on the notch 2240 of the frame 20 so as to cling to it.
• this elastically flexible tab 2110 is provided to rest and slide against the ramp 2241 of the notch 2240, which forces the flexible tab elastically 2110 to flex elastically towards the inside of the electrical box (see figures 22 to 24).
• the return means which it will be recalled that they are provided to automatically return the attachment means to the fixing position, are formed by the resiliently flexible tab 2110 itself, in the sense that its character elastically deformable ensures its return to the fixing position when no force is exerted on it.
• the opening 2112 provided in the resiliently flexible tab 2110 automatically engages on the notch 2240, which makes it possible to block the frame 20 on the support plate 10.
• the “fixing position” of the attachment means of the frame 20 on the support plate 10 therefore corresponds to the position in which the opening 2112 provided in the resiliently flexible tab 2110 is engaged on the notch 2240.
• the “release position” of the attachment means corresponds for its part to the position in which the opening 2112 provided in the resiliently flexible tab 2110 is entirely released from the notch 2240 and located at a distance from the latter.
• the lever 2250 is provided to force the resiliently flexible tab 2110 to flex into the release position.
• a curved main plate 2251 which carries on its outer face a shaft 2253 whose ends extend on either side of the main plate 2251.
• This shaft 2253 allows to articulate the lever 2250 on the body 200 of the frame 20, around an axis parallel to the plane (x, y).
• the internal face of the side wall 220 of the body 200 of the frame 20 comprises in correspondence two reception cradles 2230 which are open towards the front and inside which the ends of the shaft 2253 can be snapped.
• these cradles 2230 are provided at the tops of two ribs which project from the internal face of the side wall 220, on either side of the notch 2240, and between which slides the resiliently flexible tab 2110 during the '' assembly of the frame 20 on the support plate 10.
• the lever 2250 is adapted to switch between two extreme positions, hereinafter called inactive position and activated position.
• the front end of the main plate 2251 of the lever 2250 is intended to be manipulated by the installer's finger. It has for this purpose a curved shape.
• lever 2250 presses against resiliently flexible tab 2110 to force it to flex until it locks. release position (see figure 27).
• lever 2250 defines an interior groove 2252 shaped to receive the upper end of the resiliently flexible tab 2110.
• this internal groove 2252 is thus bordered, on one side, by an internal rim 2252A, and, on the other, by an external rim 2252B.
• the inner rim 2252A is inclined outwards so that, during the assembly of the frame 20 on the support plate 10, the front end of the resiliently flexible tab 2110 comes to rest against this inner rim 2252A, forcing thus the lever to swing to its activated position (see figures 23 and 24).
• the cover 2 comprises a locking heel 2A which projects rearward and which, when the hubcap 2 is clipped onto the extension 210 of the frame 20, is adapted to press against the lever 2250. This support then prevents the lever 2250 from tilting towards its release position.
• the installer acts on the lever 2250 in order to place it in the activated position.
• the lever 2250 presses by its outer rim 2252B against the resiliently flexible tab 2110 and forces the latter to move into the release position (see FIG. 27).
• the outer rim 2252B of the lever 2250 forms a recessed notch 2254.
• This notch 2254 constitutes the means for retaining the resiliently flexible tab 2110 in the release position (see FIG. 28). It is in fact designed to fit on the upper edge of the resiliently flexible tab 2110 when the lever 2250 arrives in the release position.
• the ramp 2241 of the notch 2240 is designed so that, when assembling the frame 20 on the support plate 10, the resiliently flexible tab 2110 flexes towards its position of liberation, without however reaching this position. In this way, the resiliently flexible tab 2110 only swings the lever 2250 over part of its travel, so that its notch 2254 does not fit on the upper edge of the elastically flexible tab 2110. Thus, when letting go Assembly of the frame 20 on the support plate 10, the resiliently flexible tab 2110 is not found blocked in the release position.
• the lever 3250 carries, as in the first two modes, the means for attaching the frame 20 to the support plate 10. However, in this mode, the lever is mounted so as to be able to rotate around the z axis, and functions like a quarter-turn screw.
• the side wall 220 of the frame 20 carries on its inner face a tubular sleeve 3221 substantially cylindrical of revolution.
• the lever 3250 has a cylindrical body of revolution, with a front portion 3251 of diameter equal to the inner diameter of the tubular sleeve 3221, and a rear portion 3252 of lesser diameter.
• the rear part 3252 comprises, near its free end, a lateral lug 3253.
• This lateral lug 3253 has a section of rectangular shape, so that its front face 3257 is orthogonal to the z axis.
• One of its rear edges is however bevelled so as to form a ramp 3254.
• the front part 3251 of the lever 3250 comprises, near its free end, a return tab 3255 which has an S shape extending in a plane orthogonal to the z axis.
• This return tab 3255 comprises a first part 3255A which extends radially with respect to the front part 3251 of the lever 3250, and a second part which extends the first, which is curved in S and which has a reduced thickness so as to be elastically deformable.
• the lever 3250 is engaged through the tubular sleeve 3221 of the side wall 220 of the frame 20, so that its return tab 3255 rests against the front end edge of this sleeve tubular 3221 and that its rear part 3252 protrudes from the rear of this sleeve.
• the return tab 3255 is then provided to rest by its free end against the inner face of the side wall 220 of the body 200 of the frame 20, so as to maintain the lever 3250 in a first angular position in which the return tab 3255 is not distorted. This is its fixing position.
• the attachment means which is provided on the support plate 10 and which is adapted to cooperate with the lever 3250 to block the frame 20 on the support plate 10 is provided under the in the form of a tubular base 3110.
• This tubular base 3110 rises from the bottom 102 of the base 100 of the support plate 10 and is formed integrally therewith, for example by molding a plastic material. It delimits a reception housing of the rear end of lever 3250.
• This tubular base 3110 has a front edge 3111, one half of which has the shape of a spiral on a half-turn.
• This tubular base 3110 is thus shaped so that, when the frame 20 is attached to the support plate 10, the rear end of the lever 3250 can engage inside the tubular base 3110.
• the return tab 3255 returns the lever 3250 to the fixing position, so that the front face 3257 of the side lug 3253 is placed in the rear of the shoulder 3112 of the tubular base 3110, which thus forms a stop preventing the lever 3250 and the frame 20 from being extracted from the support plate 10.
• the first part of the return tab 3255 is accessible to the installer and therefore forms a bearing surface allowing the installer to force the lever to pivot until his position of liberation.
• the retaining means which is designed to keep the lever 3250 in the release position, is here in the form of a ratchet tooth (not visible in the figures) which is located inside the tubular base. 3110 and which is adapted to hook onto the lateral lug 3253 when the lever 3250 pivots over its entire travel, up to its release position.
• the ratchet tooth could be located elsewhere, for example in the tubular sleeve 3221 (in which case the lever will be equipped with a rib to which the ratchet tooth can hook).
• a hubcap 2 which is adapted to be fixed to the front of this electrical box and whose shape is associated with the mechanism.
• the cover 2 comprises, inside the structural part 2B in the form of a frame, a well 2C for receiving an electrical plug. It also carries a folding cover 2E for protecting the well 2C.
• the cover 2 comprises on the contrary a 2D control key adapted to snap onto receiving means 2G provided on a wall 2F which closes the structural part 2B in the form of a frame.
• These 2G reception means are provided to provide the 2D control key with tilting mobility.
• this wall 2F has two oblong windows closed by rigid plates 2H which are connected to the edges of these oblong windows by flexible sealing membranes.
• These rigid plates 2H are thus adapted to tilt relative to the wall 2F when the studs provided at the rear of the 2D control key come to press on it, which allows them to in turn tilt the coaches 3C of the mechanism. switch 3B.
• the switch mechanism 3B can switch by tilting the control key 2D.
• the electrical box has a square section and it defines a single station making it possible to accommodate one or two switchgear mechanisms: this is said to be a single station box.
• it could be a multi-station box, having a section of rectangular shape and defining two or three stations.
• the electrical box will preferably include more sets of attachment means. It will include, for example, six in the case of a box with two stations and eight in the case of a box with three stations.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Casings For Electric Apparatus (AREA)
• Connection Or Junction Boxes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=70154573

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• 2019
  • 2019-12-20 FR FR1915130A patent/FR3105561B1/fr active Active
• 2020
  • 2020-12-03 WO PCT/EP2020/084520 patent/WO2021122043A1/fr active Application Filing
  • 2020-12-03 EP EP20815881.6A patent/EP4078745A1/de active Pending
  • 2020-12-03 CN CN202080088162.9A patent/CN114830477B/zh active Active

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