Patent EA-001300-B1 (EA)
Title: Electrical wiring frame
IPC: H02B1/20
Filed: 1998-03-25
Abstract: 1. An electrical wiring frame for housing electrical appliances and the wiring thereof, comprising at least two vertical members (2) arranged parallel and at least a horizontal rail (4) linked to the two vertical members by at least two generally omega-shaped stirrups (3), the stirrup base determining the spacing of the horizontal rail relative to the vertical members, the internal space defined by said stirrups being used as wiring duct, the horizontal rail (4) being provided with a standardised support (5) designed for housing electrical appliances and at least one binding post (6) arranged parallel to the support designed for fixing in position the electric wires connected to the electrical appliances, characterized in that the mounting of the stirrups (3) on the vertical members (2), of the horizontal rail (4) on the stirrups (3), of the support (5) and of the binding post (6) on the horizontal rail (4) is a demountable jointing and locking assembly, the elements to be mutually assembled comprising respectively matching jointing and locking means arranged to co-operate mutually. 2. The frame as claimed in claim 1, characterized in that additional jointing and locking means arranged to co-operate mutually are designed for possible jointing by mutual translation displacement perpendicular to the elements to be assembled. 3. The frame as claimed in claim 1, characterized in that additional jointing and locking means arranged to co-operate mutually are designed for possible jointing by rotation of the elements to be assembled. 4. The frame as claimed in claim 3, characterized in that the vertical member (2) is formed by a profile, along one side of which there is a rounded pivot (21), and on the other end - a slot. 5. The frame as claimed in claim 4, characterized in that the vertical member (2) has an essentially square section, symmetrical respective to the median plane, parallel side with the pivot and the slot. 6. The frame as claimed in claim 4, characterized in that a stirrup (3) has at its lateral side (31) disposed from the side of the vertical member (2) an outer projection forming rounded hook (33) mating with the pivot of the vertical member (2) and a free end of the stirrup, bent outward, forms an elastic tong (34) with a nose (35) locking in the slot (23) of the vertical member after rotating the stirrup around the pivot, wherein the distance between the hook and the nose is less or equal to the distance between the pivot and the slot, and the stirrup and/or the vertical member are provided with protrusions in the mating zone, said protrusions form thrusts (24, 36). 7. The frame as claimed in claim 6, characterized in that a stirrup (3) has at its lateral side (31) disposed from the side of the vertical member (2) at least one aperture (37) designed for the mounted fixing device, sliding in the slot (25) of the vertical member (2) and blocking the position of said stirrup. 8. The frame as claimed in claim 6, characterized in that a stirrup (3) has at its lateral side (31) disposed from the side of the horizontal rail (4) a free edge (38), bent outward, forming an angle of about 90 degree  with the lateral side and provided with a slot (39). 9. The frame as claimed in claim 8, characterized in that the horizontal rail (4) is formed from a profile, having on the rear side a longitudinal slot (41) in the form of "C", the free end of one of sides (42) of which is bent and having a thickening (44), designed for introducing a stirrup along the first edge of the corresponding lateral side (32), the free end of the other side (43) of the slot forms an elastic tong with a nose (45), providing locking by the second edge of the corresponding lateral side (32) of the stirrup after turning the horizontal rail around the first edge, wherein the distance between the twi branches of the slot in the form of "C" is not greater than the width of the stirrup base, and there is a special relief  on the stirrup and/or on the rail in the mating zone, said relief serves as a thrust. 10. The frame as claimed in claim 9, characterized in that the horizontal rail is provided with a longitudinal slot (141) on the front side in the form of turned over "T". 11. The frame as claimed in claim 10, characterized in that the support is formed from a profile and has two elastic linking paws (51, 52) and a protrusion (53), the paws (51, 52) are designed enabling to enter into the slot (141) in the form of "T" on the front side of the horizontal rail (4) after turning around the protrusion (53) resting on said rail (4), one end of the paws (51) is bent for resting along the stirrup base (141), wherein there is a hook at the other end of the paw (52) for locking a free edge on the rear side, wherein the distance between the outer sides of the paws (51, 52) is not less than the distance  between the free edges (142, 143) of the slot (141), and the distance between the protrusion (53) and the hook's paw (52) is not greater than the thickness of this free edge. 12. The frame as claimed in claim 2 or 9, characterized in that the horizontal rail is provided with at least one longitudinal U-shaped slot (145) along its total length, the slot having , at least, one longitudinal recess (146) in one of its branches, and the binding post (6) for cables has a closing element (64) with two elastic tongs (65, 66), one of which there is a projection (67), elastically entering into the longitudinal recess (146) of the U-shaped slot, for which the base is inserted into the slot after moving the binding post in the direction of the horizontal rail. 13. The frame as claimed in claim 12, characterized in that the binding post (6) for cables has a base (62) having in the rear portion a catch (68), being inserted into the rear part of the horizontal rail (4), wherein the distance between the catch (68) and the base (64) is less orequal to the width of the rail in the mating zone. 14. The frame as claimed in claim 13, characterized in that the binding post (6) for cables is provided with a number of teeth (61), parallel to each other with at least one groove (63) in each tooth, wherein the grooves of two adjacent teeth form the zone of receiving and fixation an electrical cable (63'). 15. The frame as claimed in claim 8, characterized in that the frame comprises an isolating plate (8) designed for overlapping, at least, part of the stirrup (3) and having, at lest, one big branch (82) jointing  with the lateral side (31) of the stirrup from the side of a perpendicular member (2) and having  a slot (83) on the free end. 16. The frame as claimed in claim 15, characterized in that the frame comprises, at least, one cover plate (9) for overlapping the clearance between two adjacent frames (1) with at least one slot (91) along its edge for introducing  corresponding free ends of the lateral sides (32, 82) of the stirrup (3) and the isolating plate (8). 17. The frame as claimed in claim 16, characterized in that a longitudinal deformable corrugaion is made in the central zone for fitting the width of the cover plate (9) to the interval between two frames (1) and for levelling the difference between two frame by height. 18. The frame as claimed in claim 15, characterized in that the frame is provided with, at least, one pressure side strip (7) for closing frame's end, along the longitudinal edges (71, 72) of which at least one slot (73) is provided for introducing corresponding free ends of the lateral side (32) and the branch (82) of the stirrup (3) and the isolating plate correspondingly. 19. The frame as claimed in any preceding claim, characterized in that the vertical members (2), horizontal rails, stirrups (3) and supports (5) are produced by extrusion from the material selected from the group including aluminum, aluminum alloys, stainless steel, steel, synthetic materials. 20. The frame as claimed in any preceding claim, characterized in that the isolating plates (8), binding posts (6), cover plates (9) and the pressure side strips (7) are made of synthetic dielectric.