• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An electrical vertical cable duct for buildings, to which a support frame for modular electrical appliances can be attached, has two parallel grooves each having an interior surface with an overhanging cut, the frame comprising two vertical spars, which can be blocked. along the grooves at adjustable heights and forming through apertures in which locking levers are inserted, each is rotatably mounted on the spar in an oblique misalignment plane, and forms a snap fit terminal foot; in the groove, and is likely to take two angular positions. In a first angular position preliminary mounting the foot is inserted with a play in the groove, allowing the beam to slide vertically along the chute, whereby the operator can adjust the vertical position of the frame, after which ik can push the locking lever with the thumb in a second angular locking position Under the effect of the angle between the plane of rotation of the lever and the groove, the foot advances obliquely in the groove, so as to be pressed against the cutting surface overhanging.
    公开号:BE1024155B1
    申请号:E2016/5919
    申请日:2016-12-12
    公开日:2017-11-23
    发明作者:Diego Marchesi；Andrea Gipponi；Enzo Milesi
    申请人:Schneider Electric Industries Sas；
    IPC主号:
    专利说明:

    SYSTEM FOR MOUNTING A SUPPORT FRAME FOR MODULAR ELECTRIC APPLIANCES Technical area
    The present invention relates to a system for mounting a support frame for electrical devices on an electrical cable duct.
    Existing technique
    In electrical power distribution systems in buildings, boxes or switchboards are usually installed in which one or more carrier mounting struts are located, more commonly referred to as DIN guides or mounting guides for modular electrical devices (switches, circuit breaker modules, industrial control devices). Generally, the mounting struts are mounted on a support frame comprising a pair of vertical support spars; the mounting struts are spaced apart from each other so as to support different rows of modular electrical devices. The support frame is fixed at a given height to an electrical cable duct chute, oriented vertically and fixed to a wall of the building that receives the electrical panel.
    Conventionally, the support frame is attached to the electrical chute with screws. The fixing operation is not easy for a single installer, the latter having to hold with one hand the frame raised along the chute at the desired height, while the other hand fixed the screws. Generally, two people are needed to complete this operation.
    Patent Application No. IT-TO2014A000892 of October 30, 2014, in the name of the same applicant, and not yet published at the time of filing of this patent application, proposes a locking mechanism that uses a key-shaped locking element. , with an enlarged head. The head of the locking member is threaded into a hole through the frame, and engages in a groove in the electrical cable duct. Each groove has an overhanging cutout. In this position, the frame can be slid along the chute to a desired height. The sliding movement is guided by the enlarged head inserted into the grooves. To lock the frame on the chute, the operator rotates the handles of the locking elements by 90 ° (a quarter of a turn) around two parallel axes of rotation, perpendicular to the wall to which the chutes are fixed. The closing movement is identical to that which is accomplished by turning a key in a lock. The two locking elements act on arcuate ramps constituted by the longitudinal members of the frame; in order to produce the grip of the enlarged heads in the overhanging cutout grooves, the locking elements exert a pull which clamps the frame side members against the chute in the desired vertical position. Summary of the invention
    The object of the invention is to allow a single operator to mount a frame on a cable duct without tools, quickly, efficiently and safely. In particular, it is desired that the operator can perform the blocking of the frame, possibly with the modular electrical devices previously mounted on the DIN guides, without having to remove his hands from the side members, so as to be able to safely support the frame to block it at the desired height along the chute. In addition, it is desired to achieve a reliable mounting system, capable of maintaining its functionality over time, even after repeated assembly and disassembly cycles.
    The aims and advantages described above, as well as others, which will be better understood later, are achieved, according to the invention, using a system having the features defined in the appended claims.
    In summary, an electrical cable trough, which can be vertically attached to a wall in a building, has a pair of parallel grooves each having an overhanging interior surface. It can be attached to the chute a support frame for modular electrical devices. The frame includes two vertical spars, each of which can be locked along a respective groove of the chute at adjustable heights and form one or more through openings. Lever locking elements are inserted through the openings. Each locking lever is mounted on the spar so as to rotate in an oblique plane of rotation, the latter being inclined relative to the vertical direction in which the grooves of the chute extend. The lever forms a rear end leg that can snap into the groove. The lever is capable of taking two angular operating positions: in a first angular position, preliminary mounting, the foot is inserted with a play in the groove, whereby the spar can slide vertically along the chute. The operator, in this condition, can adjust the vertical position of the frame. Once the desired height is reached along the chute, the operator, by a simple movement of the thumb, can push the locking lever in a second angular locking position. Under the effect of the inclination mentioned above, namely the angle between the plane of rotation of the lever and the groove, the portion of the cantilevered protruding foot is caused to advance obliquely in the groove, until pressed against the overhanging cutting surface.
    BRIEF DESCRIPTION OF THE DRAWINGS The structural and functional features of certain preferred but non-limiting embodiments of a mounting system according to the invention will now be described; reference is made to the accompanying drawings, in which: FIGS. 1 and 2 are partial perspective views illustrating the assembly of a mounting system in a mounting and preliminary adjustment phase and in a mounted condition, respectively; Figure 3 is a perspective view of a locking lever; Figure 4 is a partial perspective view of a front face of a spar; Figures 5 and 6 are partial perspective views of a rear face of the spar, opposite that of Figure 4; Figure 7 is another partial perspective view of the front face of a spar; Figures 8 and 9 are a partial perspective view and a side view, respectively, showing a locking lever inserted into a spar in the adjusting condition of Figure 1; Fig. 10 is a side view showing the lock lever rotated in the locked condition of Fig. 2; Figure 11 is a front view with a locking lever inserted into a spar in the adjusting condition of Figure 1; Figure 12 is a front view with a locking lever inserted into a spar in the locked condition of Figure 2; Figure 13 is a top view, in a preliminary phase, mounting a frame on a chute; Figure 14 shows an enlargement of a detail of Figure 13; Figure 15 is a top view in an intermediate mounting phase and adjustment of the vertical position of a frame on a chute; Figure 16 shows an enlargement of a detail of Figure 15; Figure 17 is a top view of the frame blocked on the chute; Figure 18 shows an enlargement of a detail of Figure 17; and Fig. 19 is a front view of the mounting system.
    detailed description
    Referring now to the drawings, there is indicated by No. 10 an electrical cable duct that can be attached to a vertical wall M of a building.
    The trough 10, itself known, comprises a bottom wall 10a and two lateral ribs 11a, 11b in the form of substantially parallel rectilinear reliefs, projecting forwards. As used herein, the term "towards the front" indicates a direction directed towards an observer who is in front of the wall to which is fixed the electrical channel 10. Between the ribs 11a, 11b and the bottom wall 10a is defines a channel 11c extending vertically, capable of receiving electrical cables (not shown).
    The chute 10 has a pair of parallel grooves 12, extending vertically. Each groove 12 is formed in one of the two lateral ribs 11a, 11b, and has a respective opening 13 directed towards the front and delimited by two edges 14 mutually facing each other. The two edges 14 of each of the openings 13 are spaced from each other a short distance, of the order of a few millimeters. Inside the groove 12 is formed at least one overhanging cutting surface 15, interior to the groove and extending in a vertical plane. In the embodiment illustrated in the drawings, two overhanging cutting surfaces 15, 15a (FIG 10) are located respectively in the vicinity of the two opposite edges 14 of the opening 13. The front side of each lateral rib 11a, 11b of the chute 10 further comprises a respective outer vertical surface 16 which acts as a bearing surface for one of the two rails 20 of a support frame for modular electrical appliances.
    A frame for the support of modular electrical appliances comprises two longitudinal members 20, vertical and separate, each of which can be mounted on a respective rib 11a, 11b of the chute 10, and can be fixed along the groove 12 at adjustable heights . In a preferred embodiment, the rails and chutes are made of a single piece of plastic, for example PS-HI, polycarbonate, ABS.
    The two longitudinal members 20 serve to support a series of horizontal mounting struts 27 (only one of which is shown). The mounting struts 27 (also referred to as DI guides or "rails") are each intended to support a plurality of modular electrical appliances, not shown, such as switches, circuit breaker modules, industrial control devices.
    Each spar 20 comprises a plurality of spaced apart support members 21, on each of which is mounted one of the two opposite ends of a respective mounting spacer 27. The height position of the spars along the grooves respective ones is adjusted so that the support members 21 of each spar are horizontally aligned with a corresponding support member of the other spar, so that the mounting struts 27 are horizontal. The number and shape of support elements may vary depending on the application.
    Preferably, at least one of the two sides of the groove 12 is constituted by a flange 17 protruding cantilevered forward, so as to have a certain flexibility or a certain ability to flex elastically in a plane of horizontal bending, so as to allow the insertion force of a foot 41 of a locking element 40 in the form of a lever. The locking lever 40 serves to lock a spar 20 along the respective lateral rib 11a or 11b in a selected position or height.
    The locking lever 40 comprises a handle 42 to facilitate its grip and maneuver, a rod 43, the end foot 41 and at least one rounded formation 44, and preferably two rounded formations in the form of cylindrical pins 44 which make protruding from opposite sides of the rod 43.
    In addition, the locking lever 40 has at least one movable opposing surface 45 facing the terminal foot 41, and preferably two movable opposing surfaces 45. In this example, the movable opposing surfaces 45 are present from a pair of projections 46 which protrude from opposite sides of the rod 43.
    The foot 41 has an elongated shape, and has two opposite ends 41a, 41b, which define a toe and a heel. The end 41a, or toe, protrudes cantilevered.
    The foot 41 has: a main dimension, which extends in a first direction, which connects the two ends 41a, 41b (heel-toe); and a secondary dimension, which extends in a second direction, perpendicular to the first direction (heel-toe), having a width which is preferably slightly greater than the distance d between the edges of the opening of the groove 12.
    Preferably, the main dimension of the foot 41, or, in other words, the distance between the two ends 41a and 41b, is greater than the distance D between the bottom of the groove 12 and the overhanging cutting surface 15.
    The longitudinal members 20 are applied against the outer front vertical surfaces 16 of the two respective lateral ribs 11a, 11b. Each spar 20 forms at least one through opening 22 capable of allowing the passage of an unlockable locking lever 40 which serves to lock the spar 20 on the trough 10 at a selected height. The through opening 22 is wider than the foot 41 is that the handle 42, so as to allow insertion. Near each opening 22, the spar may form a pair of resilient teeth 28 capable of temporarily holding a lever 40 by its rod 43 during a preliminary assembly phase.
    On two opposite sides of the opening 22, the spar 20 may have one or more fixed opposing surfaces 25 facing forward. In the illustrated example, two fixed opposition surfaces 25 are connected to a respective convex ramp 26. The ramp or each ramp has an end 26a less embossed, or arranged flush with the front face of the spar, and one end 26b more in relief, connected to the fixed opposition surface 25. The fixed opposition surface 25 may be less raised than the end 26b relative to the front face of the spar.
    On two opposite sides of the opening 22, the rear face of the spar comprises two concave seats 24 (FIG 5), capable of receiving in support the pin formations 44. The seats 24 are aligned in a direction which forms a different angle 90 °, preferably slightly greater than 90 °, relative to the vertical longitudinal direction in which the spar extends, for example about 100 °.
    The movable opposing surfaces 45 are capable of cooperating in creeping relation with the convex ramps. In order to better balance the movements and the forces exchanged between the locking lever, the spar and the chute, the ramps 26 are preferably , arranged symmetrically on opposite sides of the opening 22.
    The convex ramps may have centers of curvature located near the concave seats 24. According to other embodiments, not shown, the ramps 26 may have a rectilinear development rather than an arc.
    The spar also forms other parts, such as, for example, protrusions S which are used for attachment to other elements, such as a switchboard or cover, which will not be described, to the extent that they do not are not relevant for the purpose of understanding the present invention.
    The locking of the longitudinal members on a chute can be achieved in the following manner. Two longitudinal members 20 may be previously connected to one another by means of one or more horizontal spacers or rails 27, before applying the longitudinal members to the chute. The longitudinal members will first be arranged against the outer front faces 16 of the ribs 11a, 11b.
    For each of the longitudinal members, a respective locking lever 40 is inserted through a through opening 22. The lever is threaded into the opening 22 from the rear side (visible in Fig. 5), by the introduction thereof by the handle 42. The cylindrical pin formations 44 are each disposed in a respective concave seat 24. The handle 42 can be inserted between the pair of elastic receiving teeth 28, with a slight forcing, so as to spread them elastically, then snap between them in the position of FIG. 8. In this configuration, the locking lever 40 is temporarily held on the beam 20 in a correct position to then insert the foot 41 into the groove 12 with the desired angular orientation, as will be explained later.
    In the illustrated embodiment, in order to maintain the correct positioning of the locking lever 40, the rod 43 thereof forms a shoulder 46 directed towards the pin formations 44. In the opening 22 may project one or a plurality of elastic lips 23 which lock by snapping on the rod 43 between the shoulder 46 and the pin formations 44, preventing the locking lever 40 from accidentally falling through the opening 22 during the phases which precede the coupling to the chute .
    According to the preferred embodiment illustrated in the drawings, the locking lever 40 is configured as an L, with the handle 42 forming an angle, in this example of about 90 °, with respect to the rod 43. The assembly consisting of a spar with at least one locking lever inserted as mentioned above will therefore be coupled to the chute. At first, the operator presses the spar against the chute. The foot 41 protrudes behind the spar (Fig. 13 and 14), and presses on the edges of the groove 12, and more precisely on the edges facing each other 14 of the opening 13 of the groove 12 The locking lever is in an angular position whereby the end 41a (defined as "toe") of the foot 41 slightly interferes with an edge 14 of the groove. By pressing the spar against the chute, the foot 41 snaps into the groove 12 (Figures 15 and 16). The snap-in insertion is facilitated if, as in the example shown, one of the two edges of the groove (the edge 17 in this case) is relatively flexible, having for example a cantilever formation, or, in another way, being constituted by a softer wall. Once inserted, within the groove 12, at least a portion of the toe 41a of the foot faces the overhanging cutting surface 15 (Fig. 16). The foot 41 is received with a lateral or horizontal clearance inside the groove 12.
    In this condition, the frame comprising two of the longitudinal members, preferably already connected by mounting spacers, can be slid along the groove 12 of the left ribs 11a and 11b right, to position the frame to the desired height. The sliding movement is guided by the feet 41 inserted with a play in the grooves 12.
    At this point, the operator, with a simple movement of one inch, pushes the handles 42 towards the chute (Fig. 2 and 17), rotating the levers in the concave seats 24. Each lever 40 rotates in a plane of rotation. rotation P inclined, so as to form an angle α with respect to the vertical direction V in which the grooves 12 extend (Fig 19). Under the effect of this angle, the rotation of the lever comprises the oblique advance of the foot of the lever inside the groove, namely with a transverse displacement component which brings the toe 41a behind the cutting surface. overhang 15 (Figs 17 and 18). At the end of the rotational movement, the movable opposing surfaces 45 of the locking lever 40 are pressed against the fixed opposing surfaces 25 of the spar. The locking lever remains in tension between the spar and the chute, whereby the spar remains tight against the chute and locked in position relative thereto.
    Preferably, rotation of the lever causes the other end, or heel, 41b of the foot 41 to strongly interfere with the bottom of the groove (Fig. 18). In this condition, the spar is clamped securely against the chute, and locked in position relative thereto, either longitudinally (or vertically), or transversely or laterally and horizontally, or, in other words, perpendicular to the wall.
    Particularly stable blockage occurs when using a metal locking lever, which deforms the plastic material of the chute. The heel can be pointed to anchor even more stable in the groove.
    Disassembly can be carried out simply by rotating the lever handle in the opposite direction, so as to move it away from the chute.
    The spar may comprise holding teeth 47 that can releasably hold the handle 42 of the lever 40 when the latter is in the locking position, facing the chute.
    Preferably, the convex ramps 26 are eccentric with respect to the concave seats 24, so as to act as cams cooperating with the movable opposing surfaces 45 of the locking lever. According to one embodiment, the distance between the ramp 26 and the concave seat 24 can increase gradually from the less raised end 26a towards the end 26b more embossed.
    If the fixed opposing surface 25 is less in relief than the end 26 with respect to the front face of the spar, or in other words, less distant from the concave seat 24 than is the more embossed end 26b, the latter can define an upper dead point which contributes to maintaining the lever 40 stably in the locked position.
    As can be appreciated, the frame can be mounted on the cable tray in a convenient and quick way. The user can mount the frame with both hands without the help of tools and without screws. It can steadily maintain the frame at the desired height using thumbs to actuate the locking levers. Blocking is not achieved by small plastic components that may break or wear after a small number of lock and unblock cycles.
    Various aspects and embodiments of the mounting system have been described. It is understood that each embodiment may be combined with any other embodiment. In addition, the invention is not limited to the embodiments described, but it may be modified within the scope of the applicability defined by the appended claims.
    权利要求:
    Claims (17)
    [1]
    A system for mounting a support frame for modular electrical appliances on an electrical cable duct (10) mountable to a wall of a building, the chute comprising a pair of parallel vertical side ribs (11a). , 11b) spaced from each other, each rib (11a, 11b) having a vertical outer surface (16) directed, in use, away from the wall, and a groove (12) extending vertically, having at least one inner overhanging cutting surface (15) extending in a vertical plane rearward of the outer surface (16), the system comprising: - a support frame comprising two vertical spars (20); ), each being lockable along a respective groove of the two grooves (12) at adjustable heights, each spar (20) having a plurality of support means (21) vertically spaced to support mounting struts (27) who extend horizontally between the two side members (20) to support modular electrical appliances; and - a plurality of locking members (40) for removably locking the longitudinal members (20) on the chute (10); characterized in that: - each spar (20) has at least one through opening (22) and at least one fixed opposing surface (25) facing forward; each locking element (40) is a locking lever (40) inserted through a respective through opening (22) of a spar (20) and mounted on the spar (20) so as to be rotatable in a plane of rotation (P) inclined with respect to a vertical direction (V), the lever (40) comprising a handle (42) projecting towards the front of the spar (20), a rear end leg (41) having a portion making cantilever projection (41a), and at least one movable opposing surface (45) facing the spar (20); the lever (40) being capable of taking two angular operating positions in the plane of rotation (P): a first angular position, in which the foot (41) is inserted with a play in the groove (12), whereby the beam (20) can slide vertically along the chute (10); a second angular position, in which the portion (41a) of the cantilevered foot is pressed against the overhanging cutting surface (15) in the groove (12), and the movable opposing surface (45). ) of the locking lever (40) is pressed against the fixed opposition surface (25) of the spar (20), whereby the spar (20) is locked with respect to the chute (10).
    [2]
    System according to claim 1, characterized in that the locking lever (40) additionally forms at least one rounded formation (44) which pivotally engages in at least one corresponding seat (24) which is formed at from the respective spar (20) and extending in a direction which forms an angle different from 90 ° with respect to the vertical direction (V) in which the grooves (12) extend.
    [3]
    3. System according to claim 1, characterized in that the locking lever (40) forms: - a rod (43) which connects the handle (42) to the foot (41), - two cylindrical pin formations (44), which: protrude from opposite sides of the shank (43), and pivotably engage two respective seats (24) formed from the respective sill (20), and aligned with each other in a direction which forms a angle different from 90 ° with respect to the vertical direction (V) in which the grooves (12) extend.
    [4]
    4. System according to claim 2 or 3, characterized in that the two seats (24) are concave seats arranged on two opposite sides of the same through opening (22).
    [5]
    5. System according to claim 3, characterized in that the locking lever (40) forms a shoulder (46) directed towards the pin formations (44), and the spar forms receiving means (23) capable of coming into effect. taken against the shoulder (46).
    [6]
    6. System according to claim 5, characterized in that the receiving means (23) comprise one or more lips formed in the opening (22).
    [7]
    7. System according to any one of the preceding claims, characterized in that the locking lever (40) is configured in L, with the handle (42) which forms an angle relative to the rod (43) which carries the foot terminal (41).
    [8]
    8. System according to any one of the preceding claims, characterized in that each spar (20) forms, near each through opening (22), elastic receiving means (28) capable of temporarily receiving the locking lever ( 40) in a predetermined position before insertion of the terminal foot (41) into the groove (12).
    [9]
    9. System according to any one of the preceding claims, characterized in that the terminal foot (41) has two opposite ends (41a, 41b), one of which constitutes the projecting cantilevered part (41a). , the two opposite ends defining between them a length greater than the distance (D) between a bottom wall of the groove (12) and the overhanging cutting surface (15), whereby when the locking lever (40) ) is rotated in the second angular position, the first end (41a) of the foot (41) is pressed against the overhanging cutting surface (15) of the groove (12), and the second end (41b) of the foot is pressed against the bottom wall of the groove (12).
    [10]
    10. System according to any one of the preceding claims, characterized in that the spar (20) comprises receiving elements (47) capable of releasably receiving the handle (42) of the lever (40) when the lever (40) ) is in the second angular position.
    [11]
    11. System according to any one of the preceding claims, characterized in that the locking lever (40) comprises two of said movable opposing surfaces (45) protruding on opposite sides of the rod (43).
    [12]
    12. System according to any one of the preceding claims, characterized in that said at least one fixed opposition surface (25) is connected to a respective ramp (26) which has a first end (26a) less raised relative to a front face of the spar (20) and a second end (26b) more in relief relative to said front face of the spar (20).
    [13]
    13. System according to claim 12, characterized in that the fixed opposition surface (25) is less raised than the second end (26b) of the ramp relative to said front face of the spar (20).
    [14]
    14. System according to claim 12 or 13, characterized in that the at least one ramp (26) is a convex ramp forward.
    [15]
    15. System according to claim 12, 13 or 14, characterized in that the at least one ramp (26) is eccentric with respect to the concave seat (24), and in that the distance between the ramp (26) and the concave seat (24) progressively increases from the less raised first end (26a) to the further raised end (26b) (26b).
    [16]
    16. System according to any one of claims 12 to 15, characterized in that the ramps (26) are two in number, arranged on respective sides opposite the opening (22).
    [17]
    17. System according to any one of the preceding claims, characterized in that the locking lever (40) is made of a metallic material.
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    BE1024155A1|2017-11-22|
    FR3045227A1|2017-06-16|
    ITUB20159270A1|2017-06-14|
    FR3045227B1|2019-05-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1069660A1|1999-07-15|2001-01-17|Schneider Electric Industries SA|Fastening device with rotating latch for modular electrical appliances|
    EP2320531A1|2009-11-05|2011-05-11|Legrand France|Support of a rail for the installation of modular electrical appliances and frame for an electrical panel or box comprising such a rail support|
    FR2956257A1|2010-02-09|2011-08-12|Legrand France|Unit for pre-assembling frame of electrical appliance on lengthened electric chute, has mounting units arranged to hook and to slide along longitudinal axis of lengthened electric chute|
    FR3011160A1|2013-09-24|2015-03-27|Hager Electro Gmbh & Co Kg|ARRANGEMENT COMPRISING A CARRIER CHASSIS AND MAINTAINING RAILS RECEIVING THE CARRIER CHASSIS|
    法律状态:
    2018-02-12| FG| Patent granted|Effective date: 20171123 |
    优先权:
    申请号 | 申请日 | 专利标题
    ITUB2015A009270A|ITUB20159270A1|2015-12-14|2015-12-14|System for mounting a support frame for modular electrical appliances.|
    IT102015000082825|2015-12-14|
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