Stopper for electrical equipment

Abstract

An accessory (1) for electrical equipment comprises at least one active face at least partly shaped as a stop adapted to block-type electrical equipment. The accessory comprises at least two matching parts (17; 19) each capable of being mounted on a respective wing (11; 13) of a rail forming a support (3) for the electrical equipment. The parts are assembled to one another with the possibility of relative sliding in a direction parallel to the active face. Each of the matching parts (17; 19) has a respective contact surface capable of cooperating internally with the respective wing (11; 13). The accessory comprises at least one spacing device, interposed between said parts (17; 19), arranged so as to move the respective contact surfaces away from one another in the sliding direction and to keep these surfaces away from one another when this device is actuated. Figure 1

Description

Title of the invention: Stopper for electrical equipment

[0001] The invention relates to an accessory for electrical equipment, and more particularly to an accessory of the type comprising at least one active face, at least partly shaped into a stop adapted to electrical equipment, in particular of the electrical block type.

[0002] An electrical enclosure, for example in the form of a panel, cabinet or box, for domestic or industrial use, typically comprises a plurality of electrical devices, generally in the form of blocks. Devices of this type include in particular, but not limited to, modular circuit breakers, contactors, relays and plates. These devices are usually installed on support rails which equip the enclosure, generally by means of fixing systems integrated into the devices.

[0003] Since these fixing systems are, to a certain extent at least, adapted to the shape and dimensions of the support rail, it is customary to use fairly standard rails. Among the most commonly used rails, we can cite for example DIN type rails, and in particular TH subtype rails, which have a top hat-shaped profile.

[0004] It is common, in certain fields at least, to install on the support rails, in addition to the equipment in question, one or more accessories of the stop type, which contribute to maintaining the position of the equipment on their respective rail. Where appropriate, these stops can be used to form groups among the equipment on the same rail, and to hold these equipment against each other, more or less tightly.

[0005] Each stop thus comprises at least one active face at least partly shaped so as to provide a stop surface adapted to an electrical device. Each device, or each group of devices, is then generally flanked by a pair of stop surfaces. The stop stops are generally provided with their own fixing system, adapted to the type of support rail for which these stops are intended.

[0006] An example of a stop is known from FR 2 940 877 AL. A stop of the type marketed by the company WAGO (registered trademark) under the reference 249-117 is also known.

[0007] Stops can be used in electrical enclosures for domestic or industrial use. In certain industrial fields, the constituent elements of the electrical enclosure are subject to strict requirements, which concern, in particular, their seismic resistance. This is the case, for example, in the field of electricity production, particularly in the nuclear sector. Maintaining the position of electrical equipment on its support rail is then critical and must be ensured, including in the event of an earthquake. The end stops must be designed so that, in such a case, they not only maintain their own position on the support rail, but also remain effective in maintaining the position of the equipment.

[0008] For example, there are vibration spectra, specific to seismic risk, which establish resistance thresholds for the end stops. Standards may also exist, which define the test conditions to which the elements of an electrical enclosure must be subjected, in particular the end stops.

[0009] The end stops currently known generally have insufficient retention in seismic conditions. The Applicant has therefore sought to improve the situation. More particularly, the Applicant has sought to propose an accessory for electrical equipment which can perform the function of a end stop even in the event of a seismic risk, by offering at least sufficient retention to meet the seismic standards of the industrial fields concerned. Even more particularly, the Applicant has sought to design an accessory of the end stop type capable of mechanically maintaining electrical equipment, in particular electrical blocks, in position on DIN rails of the TH35 type under accidental conditions, in particular earthquakes.

[0010] An accessory for electrical equipment is proposed, of the type comprising at least one active face at least partly shaped as a stop adapted to electrical equipment, in particular of the electrical block type. This accessory comprises at least two homologous parts each capable of being mounted on a respective wing of a rail forming a support for the electrical equipment and assembled to one another with the possibility of relative sliding in a direction parallel to the active face. Each of the homologous parts has a respective contact surface capable of cooperating internally with the respective wing. The accessory further comprises at least one spacing device, interposed between said parts, arranged so as to move the respective contact surfaces away from one another in the sliding direction and to keep these surfaces away from one another when this device is actuated.

[0011] The proposed accessory is capable of mechanically ensuring the positioning and maintenance of electrical equipment on support rails, in particular inside an electrical enclosure, including in seismic conditions.

[0012] This accessory makes it possible to meet high seismic resistance requirements, such as these requirements can be imposed on electrical equipment and their fixing systems by standards or the like. The proposed accessory is suitable for rails of different dimensions. The accessory in question is easily mounted on a support rail, regardless of its location on this rail.

[0013] The proposed accessory is capable of mechanically maintaining electrical equipment, in particular electrical blocks on DIN rails of type TH35, in the event of an earthquake with an intensity of up to 35 g of acceleration.

[0014] Optional, complementary or alternative features of the invention are set out below: - The spacing device comprises at least one threaded rod received in one of the mating parts perpendicular to the respective contact surface of this part and at least one bearing surface for this threaded rod on the other of the mating parts. The threaded rod is configured to exert a force on the bearing surface when the threaded rod is screwed. This force is capable of moving the mating parts away from each other. - The spacer device further comprises a threaded orifice formed in one of the mating parts and which extends perpendicular to the contact surface of this part. This threaded orifice opens opposite the other of the mating parts. - The spacer device also includes a flat-bottomed hole in the other of the mating parts. The flat-bottomed hole is located opposite the threaded hole. - The accessory comprises at least one additional part. At least one of the homologous parts is mounted in translation on the additional part in the sliding direction. - The other of the homologous parts is integral with the additional part. - The other matching part is mounted in translation on the additional part according to the sliding direction. The accessory further comprises a member inserted between the matching part and the additional part. The member blocks this translation. - At least one of the homologous parts has a stop surface capable of cooperating externally with an edge of the respective wing of the profile so as to retain the part on the rail in the event of withdrawal of the part in a direction normal to the rail. - At least one of the homologous parts has a groove through which the part engages at least part of the respective flange of the rail. - The groove comprises at least a portion of the contact surface or the stop surface. - At least one of the homologous parts has at least one lateral face belonging to the active face. - The matching part is mounted on the additional part by through a slide-type connection. The slide connection is organized between the part in question and the additional part. - The slide-type connection comprises at least one rectilinear groove provided in one of said part and the additional part and a rectilinear rib corresponding in shape to the groove, arranged on the other of said part and the additional part. - The other homologous part includes a groove similar to the straight groove or a rib similar to the straight rib, like its homologous part.

[0015] A kit is also provided for forming an accessory for electrical equipment, of the type comprising at least one active face at least partly shaped into a stop adapted to electrical equipment, in particular of the electrical block type. The kit comprises at least two homologous parts which are each mounted on a respective wing of a rail forming a support for the electrical equipment and are assembled to one another with the possibility of relative sliding in a direction parallel to the stop surface, each of these parts having a respective contact surface capable of cooperating internally with the respective wing of the rail and at least one spacing device which is inserted between said parts and is actuated so as to move the respective bearing surfaces away from one another in the sliding direction and to keep these parts away from one another.

[0016] A mounting method is also proposed, in which at least one kit is provided for forming an accessory of the type comprising at least one active face at least partly shaped into a stop adapted to electrical equipment, in particular of the electrical block type, the kit comprising at least two homologous parts, each of these parts having a respective contact surface capable of cooperating internally with a respective wing of a rail. Each of said parts is mounted on a respective wing of a rail supporting the electrical equipment and these parts are assembled to one another with the possibility of relative sliding in a direction parallel to the stop surface. At least one spacing device is inserted between said parts and is actuated so as to move the parts away from one another in the sliding direction so that these parts each come to bear internally against the respective wing of the profile.

[0017] An electrical enclosure is also proposed, in particular of the box, cabinet or panel type, comprising at least one rail forming a support and at least one accessory of the type described above. The accessory is mounted on the rail.

[0018] Finally, a device is proposed comprising at least one electrical device and an accessory of the type described above. The accessory comprises at least one active face at least partly shaped into a stop adapted to the electrical device.

[0019] Other characteristics and advantages of the invention will appear on examining the detailed description below, and the appended drawings, in which: - [Fig.l] represents a perspective view of the accessory installed on a rail according to one aspect of the invention; - [Fig.2] represents a front view of the accessory installed on a rail according to one aspect of the invention; - [Fig.3] represents a sectional view of the accessory installed on a rail according to one aspect of the invention; - [Fig.4] represents a sectional view of the first part according to one aspect of the invention; - [Fig.5] represents a side view of the first part according to one aspect of the invention; - [Fig.6] represents a front view of the first part according to one aspect of the invention; - [Fig.7] represents a sectional view of the second part according to one aspect of the invention; - [Fig.8] represents a side view of the second part according to one aspect of the invention; - [Fig.9] represents a side view of the third part according to one aspect of the invention; - [Fig. 10] represents a perspective view of the third part according to one aspect of the invention; - [Fig. 11] represents a view of the mounting of the first part on the rail according to one aspect of the invention; - [Fig. 12] represents a view of the mounting of the second part on the rail according to one aspect of the invention; - [Fig. 13] represents a view during assembly of the accessory on the rail according to one aspect of the invention; - [Fig. 14] represents a front view of the accessory installed on a rail according to one aspect of the invention; - [Fig. 15] represents a perspective view of the accessory installed on a rail according to one aspect of the invention; - [Fig. 16] represents a front view of the accessory installed on a rail according to one aspect of the invention; - [Fig. 17] represents a perspective view of the accessory installed on a rail according to one aspect of the invention; - [Fig. 18] represents a vibration spectrum to which the accessory according to one aspect of the invention can be subjected; - [Fig. 19] represents a vibration spectrum to which the accessory according to one aspect of the invention can be subjected.

[0020] The attached drawings contain elements of a certain character. They may therefore not only serve to complete the invention, but also contribute to its definition, where appropriate.

[0021] Reference is made to Figures 1 to 3.

[0022] These figures show an example of an accessory for electrical equipment according to the invention, in the form of a stop 1. The stop 1 shown in these figures is installed on a support rail 3 of conventional type, intended to receive one or more electrical devices (not shown). As shown, the stop 1 is suitable for electrical devices formed in blocks, for example as modular circuit breakers, contactors, relays, plates and the like.

[0023] The rail 3 extends in a longitudinal direction, represented in [Fig.l] by a first double arrow 4. The rail 3 comprises a portion shaped as a pair of wings homologous to one another, namely a first wing 11 (to the left of figures 2 and 3) and a second wing 13 (to the right of these figures), and a portion shaped as a bottom 15, which connects the first wing 11 and the second wing 13 to one another. Here, the first wing 11 and the second wing 13 extend generally parallel to one another and perpendicular to the bottom 15. Here, the first wing 11 and the second wing 13 are each connected to the bottom 15 by means of a respective rounded portion (not referenced) of the rail 3. Here, the bottom 15 is generally flat.

[0024] Each of the wings has an inner face, oriented towards the inner face of the homologous wing, and an outer face oriented opposite to the inner face. The first wing 11 thus comprises an inner face 51 oriented towards the second wing 13 and an outer face 52, oriented opposite to the inner face 51. The second wing 13 likewise comprises an inner face 71 oriented towards the first wing 11 and an outer face 72, oriented opposite to the inner face 71.

[0025] In particular, the inner face 51 of the first wing 11 and the inner face 71 of the second wing 13 are generally planar. The inner face 51 of the first wing 11 and the inner face 71 of the second wing 13 extend here parallel to each other.

[0026] The bottom 15 has an inner face 151, from which the first wing 11 and the second wing 13 project, and an outer face 152 opposite this inner face 151. The inner face 51 of the first wing 11, the inner face 71 of the second wing 13 and the inner face 151 of the bottom 15 jointly delimit the interior of the rail 3.

[0027] Here, the rail 3 further comprises a pair of flanges each extending along a respective wing, from an end thereof opposite the bottom 15 and towards the outside of the rail 3. The rail 3 thus comprises a first flange 901 along the first wing 11 and a second flange 902 along the second wing 13. Here, the first flange 901 and the second flange 902 are respectively connected to the first wing 11 and the second wing 13 by a respective rounded portion (not referenced) of the rail 3.

[0028] Each edge has a lower face directed towards the bottom 15 of the rail 3 and an upper face opposite this lower face. The first edge 901 thus has a lower face 93 and an upper face 91, while the second edge 902 has a lower face 94 and an upper face 92.

[0029] The rail 3 is typically made from a section of profile, for example made of sheet metal. The rail 3 thus has a generally constant cross-section, or profile, comprising a pair of branches extending parallel to each other, corresponding to the first flange 11 and the second flange 13. These branches are each terminated by a respective end branch which extends towards the outside of the rail and corresponds to the first flange 901 and the second flange 902. Such a profile can be seen as a profile in the shape of a top hat or an omega letter.

[0030] As illustrated here, the rail 3 may conform to the DIN standard, in particular to the TH type of this standard. In this case, the rail 3 has a profile shape and dimensions specified by this standard.

[0031] The stop 1 comprises a first part 17, engaged on the first wing 11 of the rail 3, and a second part 19, homologous to the first part 17, engaged on the second wing 13.

[0032] Each of the homologous parts of the stop 1 is capable of engaging on a respective wing of the rail 3, in such a way that this part can be in contact with the inner face of this wing. For example, the first part 17 is in contact with the inner face 51 of this first part 17, while the second part 19 is in contact with the inner face 71 of the second wing 13.

[0033] Optionally, at least one of the homologous parts of the stop 1 is also in contact with the bottom 15 of the rail 3. In the particular case shown here, the first part 17 and the second part 19 are each also in contact with the inner face 151 of the bottom 15 of the rail 3.

[0034] The first part 17 and the second part 19 are mounted to slide relative to each other, in a so-called sliding direction. This sliding direction is represented by a second arrow 27 in [Fig. 1]. The stop 1 is installed on the rail 3 in such a way that the sliding direction is perpendicular to the longitudinal direction of the rail 3 and to the wings of this rail 3.

[0035] According to the invention, the stop 1 further comprises a spacing device, or spacer in short, mounted between the homologous parts and configured so as to move these parts away from each other in the sliding direction when the spacer is actuated and keep these parts away from each other. Here, the spacer is interposed between the first part 17 and the second part 19.

[0036] In particular, the spacer comprises a threaded rod screwed into one of the homologous parts of the stop 1 and one end of which bears against the other of these parts, this threaded rod extending mainly in the sliding direction of the homologous parts. In other words, the threaded rod extends in a direction whose largest component corresponds to the sliding direction of the homologous parts.

[0037] For example, the spacer here comprises, as a threaded rod, a clamping screw 23, screwed into the second part 19 and which bears against the first part 17. The clamping screw 23 extends in the sliding direction.

[0038] Once actuated, the spreader exerts a tension force between the homologous parts of the stop 1, which results in a contact pressure between each of these parts and the respective wing of the rail 3 on which the part is engaged. This contact pressure between each of the homologous parts and the respective wing on which this part is engaged secures the stop 1 and the rail 3. Once tightened, the clamping screw 23 exerts a tension force between the first part 17 and the second part 19, which results in a contact pressure between the first part 17 and the first wing 11, on the one hand, and between the second part 19 and the second wing 13, on the other hand.

[0039] In the embodiment shown here, the stop 1 further comprises an additional part, or third part 21, while at least one of the homologous parts of the stop 1 is slidably mounted on this third part 21.

[0040] Here, the first part 17 and the third part 21 are integral with each other, while the second part 19 is slidably mounted on the third part 21 in the sliding direction. Here, the first part 17 is slidably mounted on the third part 21 and is then made integral with this third part 21 by an element capable of blocking this sliding, here a second screw, or fixing screw 25. In other words, the threaded rod of the spacer is here screwed into a homologous part of the stop 1 slidably mounted on the additional part 21, while the end of this rod comes to bear against a homologous part of the stop 1 integral with this additional part 21.

[0041] At least one of the first part 17 and the second part 19 is mounted on the third part 21 by means of a sliding connection whose direction corresponds to the direction of mutual sliding of the first part 17 and the second part 19. In particular, the sliding connection here comprises a female part and a male part arranged so as to slide in the female part, for example based on a groove and one or more ribs.

[0042] Here, the first part 17 and the second part 19 each comprise a similar male part capable of engaging a female part.

[0043] At least one of the homologous parts of the stop 1 comprises a pair of large faces, or lateral faces, mutually opposite and is engaged on a respective wing of the rail 3 in such a way that these lateral faces extend perpendicular to the longitudinal direction of the rail 3. In particular, at least some of these lateral faces are at least partially shaped into abutment surfaces, suitable for electrical equipment.

[0044] In particular, the first part 17 here comprises a pair of lateral faces 451 (only one of these faces is visible in [Fig.l]), mutually opposite and extending generally parallel to each other. The first part 17 is mounted on the rail 3 in such a way that its lateral faces 451 are arranged perpendicular to the longitudinal direction of the rail 3. Here, the lateral faces 451 are planar. These faces each offer a respective stop surface.

[0045] The first part 17 further comprises a pair of additional, mutually opposite faces, each connecting the side faces 451 to each other, namely a rear face 491 facing the second part 19 and a front face 471 opposite the rear face. The first part 17 is mounted on the first flange 11 such that the rear face 491 of the first part 17 is located inside the rail 3, while the front face 471 is located outside the rail 3. In other words, the first part 17 straddles the first flange 11 of the rail 3.

[0046] Similarly, the second part 19 comprises a pair of lateral faces 452 (only one of these faces is visible in [Fig.l]), mutually opposite and extending generally parallel to each other. The second part 19 is mounted on the rail 3 in such a way that these lateral faces 452 are arranged perpendicular to the longitudinal direction of the rail 3. Here, the lateral faces 452 of the second part 19 are planar. These faces each offer a respective stop surface.

[0047] The second part 19 further comprises a rear face 492 and a front face 472 which are mutually opposite, each connecting the side faces 452 of the second part 19 to each other. The rear face 492 is directed towards the first part 17. The second part 19 is mounted on the second wing 13 in such a way that the rear face 492 of this second part 19 is located inside the rail 3 while the front face 472 is located outside.

[0048] The actuation of the spreader, in particular the screwing of the clamping screw 23, moves the first part 17 and the second part 19 relative to each other in a direction normal to the front faces 471, 472 of these parts, in mutually opposite directions. This direction corresponds to the sliding direction.

[0049] The third part 21 here has a generally parallelepiped shape. In particular, the third part 21 comprises a pair of lateral faces 453 (only one of these faces is visible in [Fig.l]), mutually opposite, an upper face 473, connecting the lateral faces 453 together, and a pair of external faces 493, mutually opposite, each oriented towards the outside of the rail 3 and which connect the lateral faces 453 together. Here, the lateral faces 453 of the third part 21 are flat. These faces each offer a respective stop surface.

[0050] The lateral faces 451 of the first part 17, the lateral faces 452 of the second part 19 and the lateral faces 453 of the third part 21 compose a pair of mutually opposite lateral faces (not referenced) of the stop 1. These lateral faces of the stop 1 form active faces, which respectively have one or more stop surfaces intended for electrical equipment. These stop surfaces are constituted by at least some of the lateral faces of the first part 17, the second part 19 and the third part 21. In particular, these lateral faces are shaped into generally planar surfaces and these surfaces are substantially in the same plane when the stop 1 is installed on the rail 3.

[0051] Reference is made to Figures 4 to 6.

[0052] These figures show the first part 17 isolated.

[0053] The first part 17 further comprises a mutually opposite lower face 441 and upper face 461, each of which connects the front face 471 to the rear face 491 and the side faces of this part.

[0054] The first part 17 comprises a groove 35 shaped so as to engage the first wing 11 of the support rail. This groove 35 is open on the lower face 441 of the first part 17 and extends, in a rectilinear manner, from one of the lateral faces of the first part 17 to the other of these lateral faces. The groove 35 passes through the first part 17.

[0055] The groove 35 has a lateral face at least partially arranged in a contact surface 431 adapted to the inner face of the flange of a support rail, in particular of the first flange 11 of the rail 3. This contact surface 431 is active when the stop 1 is installed on the rail 3 and fixed thereto. In particular, the contact face 431 is arranged so as to provide the interface between the first part 17 and the first flange 11 described in relation to FIGS. 1 to 3. The contact surface 431 is arranged to be clamped against the inner face 51 of the first flange 11 under the action of the spacer described in relation to FIGS. 1 to 3. The contact face 431 is carried by a lateral face of the groove 35.

[0056] This contact surface 431 is shaped in a corresponding manner to the inner face 51 of the first wing 11, so as to be able to transmit a pressure contributing to holding the first part 17 on the rail 3. Here, this contact surface 431 is generally flat. The contact surface 431 is oriented towards the front face 471 of the first part 17.

[0057] In particular, the contact surface 431 extends along the groove 35, generally perpendicular to the lateral faces of the first part 17, between the face rear 491 and front face 471.

[0058] The groove 35 further comprises a bottom 37 which connects to the lateral face.

[0059] The groove 35 also comprises a stop portion 39 which projects from the face lateral of the groove 35 opposite the contact surface 431. This stop portion 39 carries a stop surface 33 oriented towards the inside of the groove 35. This stop surface 33 is arranged so as to prevent removal of the first part 17 from the rail 3 once this part is engaged on the first wing 11, at least in a direction normal to the bottom 15 of the rail 3.

[0060] The stop portion 39 and the contact face 431 jointly delimit an opening 32 of the groove 35.

[0061] Here, the groove 35 has a generally rectangular cross-section.

[0062] The first part 17 further comprises a bearing surface 73 which projects from the lower face 441 of the first part 17. Here, this bearing surface 73 connects the contact surface 431 to the rear face 491. An internal chamfer 41 connects the contact surface 431 to the bearing face 73. An external chamfer 43 connects the rear face 491 to the bearing surface 73. Here, the bearing surface 73 generally extends perpendicularly to the contact surface 431. The bearing surface 73 is oriented opposite to the stop surface 33.

[0063] Here, the first part 17 comprises a male part adapted to cooperate with a female part of the sliding connection arranged in the third part. This male part is shaped as a rib 65 which projects from the upper face 461 of the first part 17.

[0064] This rib 65 generally extends in a rectilinear manner, here from the front face 471 of the first part 17 to the rear face 491 of this part. This rib 65 extends in a longitudinal direction substantially normal to the contact face 431.

[0065] Here, this rib 65 further extends generally parallel to the lateral faces 451 of the first part 17. The rib 65 has an upper surface 69 opposite the lower face 441. The upper surface 69 of the rib 65 here extends parallel to the bearing surface 73.

[0066] The rib 65 has a head portion 641 with two lateral faces 70 which extend parallel to the lateral faces 451 of the first part 17. Here, these lateral surfaces 70 are generally flat. The lateral surfaces 70 of the rib 65 have a smaller spacing than the spacing of the two lateral faces 451 of the first part 17 so that these lateral faces 70 are set back from the lateral faces 451 of the first part 17. The lateral surfaces 70 of the rib 65 and two lateral faces 451 of the first part 17 here have the same median plane.

[0067] The rib 65 further has a foot portion 661 which connects the head portion 641 to the rest of the first part 17. This foot portion 661 is set back by relative to the lateral surfaces 70 of the head portion. This foot portion thus forms two grooves 67 in the lateral faces of the rib 65 extending parallel to the sliding direction 27 on either side of the rib 65. Here, these grooves 67 have a rectangular cross section.

[0068] Thus, the rib 65 of the first part 17 here has a cross-section in the general shape of a T. The horizontal branch of the T corresponds to the head while the vertical branch of the T corresponds to the foot.

[0069] The first part 17 further has a tapped hole 61, formed from the upper face 461 of this part, here from the end surface 69 of the groove 65. In particular, the tapped hole 61 has an axis normal to the end surface 69. Here, this tapped hole 61 is formed near the front face 471 of the first part 17, approximately equidistant from the lateral faces of this part. The tapped hole 61 has a diameter corresponding to the fixing screw 25. For example, the tapped hole 61 is adapted to receive a fixing screw 25, for example of the M5 type. Here, the tapped hole 61 is blind.

[0070] The spacer here comprises a bearing surface arranged on the first part 17. This bearing surface is adapted here to the clamping screw 23. Once the stop 1 is installed on the rail 3, this bearing surface is normal to the sliding direction 27.

[0071] Here, the bearing surface of the first part 17 is shaped into a flat bottom 53 arranged in a blind hole 54 of the first part 17. This blind hole 54 is formed from the rear face 491 of the first part 17. The blind hole 54 here generally extends in the longitudinal direction of the rib 65. Here, this blind hole 54 is also parallel to the lateral surfaces 451 of the first part 17. In particular, the flat bottom 53 is normal to the longitudinal direction of the rib 65. Here, this flat bottom 53 is also normal to the axis of revolution of the blind hole 54.

[0072] Reference is made to Figures 7 and 8.

[0073] These figures show the second part 19 described in relation to figures 1 to 3 in isolation.

[0074] Generally, the second part 19 is shaped in a similar manner to the first part 17, except that this second part 19 is here devoid of a hole of the blind hole type 54 and a tapped hole 61. In particular, the second part comprises a lower face 442 and an upper face 462 mutually opposite, which each connect the front face 472 to the rear face 492 and the side faces. These faces are generally shaped in a similar manner to their counterpart faces of the first part 17.

[0075] The second part 19 thus comprises a respective groove 352 homologous to the groove of the first part 17, capable of engaging the second wing 13 open on the lower face 442 of the second part 19 and analogous to the groove of the first part 17. In particular, the groove 352 comprises a contact face 432 shaped correspondingly to the inner face of the second wing 13. The contact face 432 is arranged to be clamped against the inner face 71 of the second wing 13 under the action of the spacing device. Here, the contact face 432 of the second part 19 is analogous to the contact face 431 of the first part 17.

[0076] The second part 19 may further comprise a stop face 332 arranged to prevent the accessory 1 from leaving the rail 3 once installed.

[0077] The stop face 332 is arranged on a stop portion 392 projecting from the edge 372 of the groove 352, opposite the contact face 432. The stop face 332 is oriented towards the inside of the groove 32 and perpendicular to the contact face 432.

[0078] The second part 19 comprises a respective male part adapted to cooperate with a female part of the sliding connection arranged in the third part 21. This male part is shaped into a rib 652, similar to the rib 65 of the first part 17, which projects from the upper face 462 of the second part 19. In particular, these ribs have profiles similar to each other, which allows them to cooperate with the same female part, or with mutually similar female parts.

[0079] The spacer comprises a tapped hole 59 arranged in the second part 19. This tapped hole 59 extends from the front face 472 to the rear face 491 of the second part 19. The tapped hole 59 extends mainly in the longitudinal direction of the rib of the second part 19. In particular, this tapped hole 59 here has an axis which extends parallel to the lateral faces 452 of the second part 19.

[0080] The axis of the tapped hole 59 extends in a manner corresponding to the sliding direction 27, here in the longitudinal direction of the rib 652 of the second part 19.

[0081] Here, the first part 17 and the second part 19 have mutually homologous external faces. In particular, the first part 17 and the second part 19 here have similar external shapes and dimensions. The first part 17 is distinguished from the second part 19 by the presence of the tapped hole 61 and the flat-bottomed hole 53, while the second part 19 is distinguished from the first part 17 by the presence of the tapped hole 59. In other words, the first part 17 and the second part 19 are distinguished here from each other exclusively by their drillings.

[0082] Reference is made to Figures 9 and 10.

[0083] These figures show the third part 21 described in relation to the stop 1 of figures 1 to 3 in isolation.

[0084] The third part 21 further comprises a lower face 74, opposite the upper face 473, connecting the lateral faces 453 and the outer faces 493 to each other. others.

[0085] The third part 21 here comprises the female part of a sliding connection capable of receiving, in a sliding manner, at least the male part of the second part 19, in particular the rib 652 of this part. Here, this female part is also capable of receiving the male part of the first part 17, in particular its rib 65.

[0086] The female part of the third part 21 has a shape matching the male part of the second part 19 and, where appropriate, the male part of the first part 17.

[0087] Here, this female part comprises a groove 75 formed in the third part 21 and whose profile corresponds to that of the rib 652 of the second part 19 and, where appropriate, to that of the rib 65 of the first part 17. The groove 75 is open on the lower face 74 of the third part 21. This groove 75 extends in a rectilinear manner and opens onto at least one of the outer faces 493 of the third part 21, which makes it possible to insert the rib 65 of the first part 17 or the rib 652 of the second part 19 from this outer face. Here, this groove 75 opens onto the outer faces 493 of the third part 21, which allows insertion from each of these faces.

[0088] In particular, the groove 75 has a bottom 81 oriented opposite the upper face 77 and two lateral faces, directed towards the inside of the groove 75, which each connect the bottom 81 to the lower face 74 of the third part 21. Here, this bottom 81 generally extends parallel to the upper face 77 of the third part 21. The groove 75 of the third part 21 extends parallel to the upper face 77 and to the lateral faces 453 of this part.

[0089] Here, each lateral face of the groove 75 comprises a respective inner surface 83. Here, these inner surfaces 83 generally extend parallel to each other. In particular, the inner surfaces 83 of the groove 75 extend perpendicular to the bottom 81. Here, the groove 75 of the third part 21 extends approximately equidistant from the lateral faces 453 of the third part 21.

[0090] Here, the groove 75 comprises a pair of grooves 79, each formed in a respective lateral face of this groove 75. The grooves 79 each extend in a direction which corresponds to the sliding direction 27. These grooves 79 are shaped here in correspondence with the head portion of the rib 652 of the second part 19 and, where appropriate, that of the rib 65 of the first part.

[0091] The third part 21 comprises an element for fixing this third part 21 to one of the homologous parts, here the first part 17

[0092] Here, the third part 21 comprises a through hole 63 as a fixing element. The through hole extends from the upper face 77 of the third part to the lower face of the latter.

[0093] Here, the through hole 63 extends normally to the upper face 77. In particular, the axis of this through hole 63 is located at a distance from one of the outer faces 493 of the third part 21 close to the distance which separates the axis of the tapped hole 61 of the first part 17 and the front face 471 of this first part 17. This makes it possible to align the outer face and the front face in question.

[0094] The through hole 63 here has a diameter substantially greater than the diameter of the tapped hole 61. The diameter of the through hole 63 generally corresponds to the diameter of the fixing screw 25 mounted in the tapped blind hole 61. The through hole 63 is arranged in the third part 21 in such a way that there is a relative position of the first part 17 and the third part 21 in which the tapped blind hole 61 is aligned with the through hole 63.

[0095] Reference is made to Figures 11 to 14.

[0096] These figures illustrate the installation of an accessory according to the invention on a rail of the type of rail 3 described in relation to figures 1 to 3, here a stop of the type of stop 1 described in relation to the latter.

[0097] Initially, the stop 1 is in a disassembled, or kit, state in which the first part 17, the second part 19 and the third part 21 at least are separated from each other. The clamping screw 23 may or may not be housed in the tapped hole 61 of the second part 19. The fixing screw 25 may or may not be housed in the through hole 63 of the third part 21.

[0098] First, one of the homologous parts of the stop 1 is installed on one of the wings of the rails 3, for example the first part 17 on the first wing 11. This installation involves engaging the wing by means of the engagement groove. To do this, the first part 17 can be inclined so as to make the first edge 901 of the first wing 11 pass into the opening 32 of the engagement groove ([Fig. 11]). The internal chamfer 41, which connects the inside of the groove 35 to the external face 441 of the first part 17, facilitates this passage. This first part 17 is then pivoted about an axis parallel to the longitudinal direction of the rail 3 until the contact face 431 of the first part 17 is opposite the internal face 51 of the first wing 11.If necessary, this pivoting can bring the first part 17 into a position relative to the rail 3 such that the bearing surface 73 of this first part touches the bottom 15 of the rail 3, as in [Fig. 12] for example. At this stage, the first part 17 can also be moved relative to the rail 3 until the contact surface 431 touches the inner face 51 of the first wing 11 ([Fig.11]).

[0099] With reference to [Fig. 11], the other homologous part of the accessory is then installed on the other wing, for example the second part 19 on the second wing 13, in a manner similar to the installation of the first part 17 on the first wing 11.

[0100] With reference to [Fig. 2], at least one of the first part and the second part 19 can be moved along the rail 3 until the first part 17 and the second part 19 are opposite each other. The respective ribs 65, 652 of these parts 17, 19 are then mutually aligned. The front face 471 of the first part 17 is arranged opposite the front face 472 of the second part 19.

[0101] The elements of the stop 1, in particular the first part 17 and the second part 19, are then assembled to each other, in particular by means of the third part 21.

[0102] The rib 65 of the first part 17 and the rib 652 of the second part 19 are engaged in the groove 75 of the third part 21. To do this, the third part 21 can be slid along the rib 65 of the first part 17 and along the rib 652 of the second part 19 until the through hole 63 is opposite the tapped hole 61 of the second part.

[0103] The first part 17 is then secured to the third part 21 by means of the fixing screw 25 which passes through the through hole 63 and is received in the tapped blind hole 61. The fixing screw 25 is tightened against the upper face 77 of the third part 21. For example, the fixing screw 25 is tightened to 3.5 Nm.

[0104] The spacing device of the accessory 1 is then installed between the first part 17 and the second part 19. In particular, the clamping screw 23 is screwed into the tapped hole 59 of the second part 19 from the front face 472 of the second part 19 until this screw is received in the blind hole 54 then in contact with the flat bottom 53 of the first part 17.

[0105] The stop surfaces 33, 332 of the grooves of the first and second parts then prevent the stop 1 from leaving the rail 3. This stop 1 remains free to slide along the rail 3, which allows the stop 1 to be moved along the rail 3 to an installation position. Generally, this position is such that one of the lateral faces 46 of the stop 1 is in contact with an electrical device.

[0106] The spreader is then actuated so as to move the contact face 431 of the first part 17 away from the contact face 432 of the second part 19. When the contact faces 431, 432 are in contact with the inner faces 51, 71 of the first and second wings 11, 13, the spreader then produces a clamping force, which leads to a contact pressure, induced by the previous movement.

[0107] Here, the clamping screw 23 is tightened against the bearing face of the first part 17, i.e. the flat bottom 53 of the hole 54, generating the clamping force.

[0108] This clamping force is transmitted to the contact face 431 of the first part 17 and to the contact face of the second part 19. The force exerted by the contact face 431 on the inner face 51 of the first wing 11 and the force exerted by the contact face 432 on the inner face 71 of the second wing 13 correspond to the clamping force.

[0109] The ability of the stop 1 to hold itself in position on the rail 3 is in proportion to the clamping force generated by the spacer. Thus, to increase the hold of the stop 1 on the rail 3, it is possible to increase the contact pressure linked to the clamping force, here linked to the tightening torque of the clamping screw 23. Here, the tightening torque of the clamping screw 23 is for example between 0.5 Nm and 5 Nm. The stop 1 is then secured to the rail 3.

[0110] Reference is made to Figures 2 and 14 to 17.

[0111] These figures illustrate that the same accessory, in particular the same stop 1, can be installed on support rails of different dimensions from each other.

[0112] In [Fig.2], the rail 3 has an overall height, that is to say a distance between the outer face 152 of the bottom 15 and the upper faces 91, 92 of the edges 901, 902, of approximately 15 millimeters. This rail 3 has an overall width, that is to say a distance between the ends of the edges 901, 902, of approximately 35 millimeters. The rail 3 also has a spacing, that is to say a distance between the inner face 51 of the first wing 11 and the inner face 71 of the second wing 13, of approximately 21 millimeters.

[0113] The distance which separates the bottom 37 of the groove 35 of the first part 17, respectively the bottom 372 of the groove 352 of the second part 19, from the bearing surface 73 of the first part 17, respectively the bearing surface 372 of the second part 19, is greater than the height of the first wing 11, respectively the height of the second wing 13. As a result, the first part 17, respectively the second part 19, are supported on the bottom 154 of the rail 3.

[0114] The rail 3 shown in Figures 14 and 15 differs from that of Figures 1 and 13 by a significantly smaller spacing between the first flange 11 and the second flange 13 (narrower rail).

[0115] The rail 3 of figures 14 and 15 has for example an overall height of approximately 15 millimeters, an overall width of approximately 35 millimeters and a spacing of approximately 19 millimeters. The first part 17, respectively the second part 19, rests on the bottom 154 of the rail 3

[0116] The rail 3 shown in Figures 16 and 17 differs from that of Figures 1 and 13 in that the spacing between the first flange 11 and the second flange 13 is greater than that of the rail of Figures 1 and 13 and, furthermore, that the height of these flanges is lower.

[0117] The rail 3 of figures 16 and 17 has an overall height of approximately 7.5 millimeters, an overall width of approximately 35 millimeters and a spacing of approximately 22 millimeters.

[0118] The distance which separates the bottom 37 of the groove 35 of the first part 17, respectively the bottom 372 of the groove 352 of the second part 19, from the bearing surface 73 of the first part 17, respectively the bearing surface 372 of the second part 19, is less than the height of the first wing 11, respectively the height of the second wing 13. As a result, the first part 17, respectively the second part 19, are supported on the edges of the rail 3.

[0119] The stop 1 may be dimensioned so as to resist the forces of a given mass, typically representative of the electrical equipment mounted on the rail 3, accelerated along the rail 3 in order to meet specific requirements, in particular relating to seismic resistance. The acceleration value is typically representative of a seismic intensity.

[0120] For example, the stop 1 may have an overall width, i.e. the distance between the lateral faces 451, of approximately 15 millimeters, an overall height, i.e. the distance between the bearing surface 73 and the upper face 77, of approximately 34 millimeters and a length, i.e. the distance between the two outer faces 493, of approximately 55 millimeters. The length of the stop 1 may be slightly greater, by a few millimeters for example, in the case where the first part 17 and the second part 19 protrude from the third part 21. In this case, the length considered is taken between the two front faces 471, 472. With the dimensions given as an example, the contact face 431 has a surface area of ​​approximately 165 square millimeters.

[0121] The dimensions given above allow the stop 1 to withstand the force of a mass of 1.44 kilograms, accelerated to 515 m / s2. This acceleration value is representative of an earthquake of 35 g. This represents a static force of 740 Newtons, applied perpendicular to the active face of the stop 1.

[0122] The dimensioning in question was also validated by a modal analysis.

[0123] Reference is made to [Fig.18].

[0124] In order to evaluate its resistance to earthquakes, a stop of the type 1 described above is subjected to vibration resistance tests. The stop is installed on a support rail. The rail is mounted in an electrical enclosure, itself installed on a vibrating pot. Calibrated masses, representative of electrical equipment, are installed on the rail.

[0125] The vibrating pot makes it possible to apply vibrations of varied amplitude and frequency to the electrical envelope, representative of earthquakes to which the envelope is likely to be subjected.

[0126] Different vibration spectra are determined to simulate shock resistance and fatigue resistance. Each spectrum defines the amplitudes of the vibrations according to their frequency. The stresses imposed on the electrical enclosure are horizontal and vertical.

[0127] The stop 1 is subjected to a first vibration spectrum, or "S2 (SND) UK" spectrum. representative of earthquake conditions.

[0128] This spectrum exhibits an increasing amplitude between 1 Hertz and 10 Hertz, with a reduction in slope at 2 Hertz. Between these frequencies, the vibration amplitude varies from 1 to 35 g with a change in slope at 2 Hertz and 4 g. Between 10 and 20 Hertz, the vibration amplitude remains constant at 35 g. Between 20 and 80 Hertz, the vibration amplitude decreases, from 35 to 6 g. From 80 Hertz, the vibration amplitude is constant, at 6 g.

[0129] Reference is made to [Fig.19].

[0130] The stop was subjected to a second vibration spectrum, or "S2 Components" spectrum.

[0131] This spectrum shows an increasing amplitude between 1 Hertz and 10 Hertz, with a reduction in slope at 2 Hertz. Between these frequencies, the amplitude of the vibrations varies from 1 to 30 g with a change in slope at 2 Hertz and 4 g. Between 10 and 20 Hertz, the amplitude remains constant at 30 g. Between 20 and 80 Hertz, the amplitude decreases, from 30 to 6 g. From 35 Hertz, the amplitude remains constant at 6 g.

[0132] Under these two stress conditions, the stop 1 remained in position on the rail.

[0133] An accessory for electrical equipment has been described in the form of a stop 1 comprising a first part 17 and a second part 19 each capable of engaging on a respective wing of a support rail. In particular, it has been described that each of the first part 17 and a second part 19 has a pair of lateral faces shaped as stop surfaces. As a result, the first part 17 can be seen as an elementary stop. The same is true of the second part 19. The third part 21, due to its main action in the stop 1, can be seen as a slide.

[0134] The first part 17, in that it carries the non-threaded part of the spacer, in the form of the blind hole 54, can be seen as a smooth elementary stop. In contrast, the second part 19 can be seen as a threaded stop.

[0135] The invention is not limited to the embodiment described above, by way of example only. In particular:

[0136] - An embodiment of the invention has been described in which the clamping screw passes through the part that is movable relative to the third part and bears against the part that is fixed to the third part. Alternatively, the clamping screw may pass through the part that is fixed relative to the third part and bear against the movable part.

[0137] - The spacing device may comprise a threaded rod equipped with a handle clamp, a compression spring or a series of spring washers.

[0138] - An embodiment has been described in which the first part and the second part are mounted to slide relative to each other by means of a sliding connection based on a groove and a rib in matching shape. The invention is not limited to this type of slide. For example, the sliding connection may comprise a shaft secured to one of the first part and the second part and slidably mounted in the other.

[0139] - A groove 35 of the first part 17 has been described having a section generally rectangular transverse. Alternatively, this groove 35 can have any shape except for the functional edges, namely the contact face 431 and the stop face 33. The same applies to the groove 352 of the second part 19.

[0140] - Once mounted, at least one of the first part 17 and the second part 19 could be devoid of a stop face. A single stop face may, in some cases at least, prove sufficient to hold the stop 1 on the rail 3.

[0141] - A first part 17 and a second part 19 have been described, each comprising a similar male part capable of engaging a female part provided in the third part 21. Similarly, the first part 17 and a second part 19 could each comprise a female part capable of cooperating with a male part provided in the third part 21.

[0142] - A first part 17 and a second part 19 have been described, each provided with front faces flat. These surfaces might not be.

[0143] - Generally flat contact surfaces 431 have been described. These surfaces are shaped so as to ensure sufficient contact pressure with the inner face of the wings. Other contact surface shapes may, if necessary, make it possible to obtain sufficient pressure. For example, the contact surfaces 431 could be at least partially curved.

[0144] - A first part 17 and a second part 19 provided with grooves have been described. engagement similar to each other. This analogy is due to the fact that the rail 3 described above has a pair of similar wings. The profile of the groove of the first part 17 and that of the second part 19 could differ from each other, in particular in the case of a support rail having wings shaped differently from each other.

[0145] - A sliding connection has been described with a single groove capable of cooperating with the male parts of the first part 17 and the second part 19. This allows for greater compactness. Alternatively, several grooves could be provided, each shaped to correspond to the male part of one of these parts.

[0146] - A stop 1 has been described comprising a first part 17 and a second part 19. counterparts of each other, fulfilling, for the most part, similar functions in the stop 1. In particular, the first part 17 is arranged so as to be mounted on one of the wings of the rail 3, in particular by engaging this wing, while the second part 19 is arranged so as to be mounted on the other wing of the rail 3, in particular by engaging on this wing. The first part 17 and the second part 19 each fit on a respective wing of the rail 3 in a similar manner. The first part 17 and the second part 19 may differ from each other, in particular as regards their shape. In particular, the first part 17 and the second part 19 may fit on the wings 11, 13 in a similar manner without having contact surfaces, or more generally engagement zones, of identical shape. This may be the case, in particular, when the wings of the rail have different shapes from each other.

[0147] - A stop 1 has been described which is capable of being mounted on a rail 3 having wings 11, 13 similar, of the same height and having edges 901, 902 oriented towards the outside of the rail 3. The stop 1, in particular the first part 17 and the second part 19, can be mounted on a support rail having wings of heights and / or shapes different from each other, and / or having one or more edges oriented towards the inside of the rail. In particular, the stop 1 can be adapted to DIN type rails, of subtype G.

Claims

Claims

1. Accessory (1) for electrical equipment, of the type comprising at least one active face at least partly shaped as a stop adapted to electrical equipment, in particular of the electrical block type, characterized in that the accessory comprises at least two homologous parts (17; 19) each capable of being mounted on a respective wing (11; 13) of a rail forming a support (3) for the electrical equipment and assembled to each other with the possibility of relative sliding in a direction parallel to the active face, each of the homologous parts (17; 19) having a respective contact surface (431, 432) capable of cooperating internally with the respective wing (11; 13) and at least one spacing device, interposed between said parts (17; 19), arranged so as to move the respective contact surfaces (431;432) from each other in the sliding direction and to keep these surfaces away from each other when this device is actuated.;

2. Accessory (1) according to claim 1, wherein the spacing device comprises at least one threaded rod (23) received in one of the homologous parts (17; 19) perpendicular to the respective contact surface (431; 432) of this part and at least one bearing surface (53) for this threaded rod (23) on the other of the homologous parts (17; 19), the threaded rod (23) being configured to exert a force on the bearing surface (53) when the threaded rod (23) is screwed, this force being capable of moving the homologous parts (17; 19) away from each other.

3. Accessory (1) according to one of claims 1 and 2, in which the spacing device further comprises a threaded orifice (59) formed in one of the homologous parts (17; 19) and which extends perpendicular to the contact surface (431; 432) of this part, and this threaded orifice (59) opening opposite the other of the homologous parts (17; 19).

4. Accessory (1) according to claim 3, in which the spacing device further comprises a flat-bottomed orifice (53) formed in the other of the homologous parts (17; 19), the flat-bottomed orifice (53) being located opposite the threaded orifice (59).

5. Accessory according to one of the preceding claims comprising at least one additional part (21), in which at least one of the homologous parts (17; 19) are mounted in translation on the additional part (21) in the sliding direction.

6. Accessory (1) according to claim 5, in which the other of the homologous parts (17; 19) is integral with the additional part (21).

7. Accessory (1) according to claim 6, in which the other homologous part (17; 19) is mounted in translation on the additional part (21) in the sliding direction, the accessory further comprising a member inserted between the homologous part and the additional part (21), the member blocking this translation.

8. Accessory (1) according to one of the preceding claims, in which at least one of the homologous parts (17, 19) has a stop surface capable of cooperating externally with an edge of the respective wing of the profile so as to retain the part on the rail (3) in the event of withdrawal of the part in a direction normal to the rail (3).

9. Accessory (1) according to one of the preceding claims, in which at least one of the homologous parts (17, 19) has a groove (35, 352) by means of which the part engages at least part of the respective wing (11, 13) of the rail (3).

10. Accessory (1) according to claim 9 attached to claim 8, in which the groove (35, 352) comprises at least a part of the contact surface (431, 432) or of the stop surface.

11. Accessory (1) according to one of the preceding claims, in which at least one of the homologous parts (17, 19) has at least one lateral face belonging to the active face.

12. Accessory (1) according to one of claims 5 and 6, in which the homologous part (17, 19) is mounted on the additional part (21) by means of a slide-type connection, the slide connection being organized between the part in question and the additional part (21).

13. Accessory (1) according to claim 12, wherein the slide-type connection comprises at least one rectilinear groove (75) provided in one of said part and the additional part (21) and a rectilinear rib (65, 652) in shape correspondence with the groove (75), arranged on the other of said part and the additional part.

14. Accessory (1) according to claim 13, in which the other homologous part comprises a groove (75) similar to the rectilinear groove or a rib similar to the rectilinear rib (65, 652), like its homologous part.

15. Kit for forming an accessory (1) for electrical equipment, of the type comprising at least one active face at least partly shaped into a stop adapted to electrical equipment, in particular of the electrical block type, characterized in that the kit comprises at least two homologous parts (17, 19) which are each mounted on a respective wing (11, 13) of a rail forming a support (3) for the electrical equipment and are assembled to each other with the possibility of relative sliding in a direction parallel to the stop surface, each of these parts having a respective contact surface (431) capable of cooperating internally with the respective wing (11, 13) of the rail and at least one spacing device which is inserted between said parts and is actuated so as to move the respective bearing surfaces away from each other in the sliding direction and to keep these parts away from each other.

16. Mounting method, in which: A. at least one kit is provided for forming an accessory (1) of the type comprising at least one active face at least partly shaped into a stop adapted to an electrical device, in particular of the electrical block type, the kit comprising at least two homologous parts (17, 19), each of these parts having a respective contact surface (431) capable of cooperating internally with a respective wing (11, 13) of a rail; B. each of said parts is mounted on a respective wing of a rail supporting the electrical device and these parts are assembled to each other with the possibility of relative sliding in a direction parallel to the stop surface, C.at least one spacing device is inserted between said parts and it is actuated so as to move the parts away from each other in the sliding direction so that these parts each come to bear internally against the respective wing of the profile.

17. Electrical enclosure, in particular of the box, cabinet or panel type, comprising at least one rail (3) forming a support and at least one accessory (1) according to one of claims 1 to 14, said accessory (1) being mounted on the rail (3).

18. Device comprising at least one electrical apparatus and an ac- accessory (1) according to one of claims 1 to 14, the accessory comprising at least one active face at least partly shaped into a stop adapted to the electrical equipment.

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