A housing element (1) of the type adapted to be mounted onto a support and guide magnetic structure (100), said housing element (1) being adapted to hold a conveyor (102) with articulated links, which is movable along said support and guide magnetic structure (100), integral with said support and guide magnetic structure (100), wherein said housing element (1) comprises:
- at least two magnets (12, 14);
- at least one plate (34), which is manufactured with a ferromagnetic material and is designed to come into contact with said magnets (12, 14);
- and
- a box-shaped body (10),
- wherein said box-shaped body (10) comprises:
- at least one bottom wall (16), at least one side wall (18), at least one end wall (20) and at least one internal central wall (22), wherein said walls (16;
- 18;
- 20;
- 22) delimit at least two seats (24, 26) in the box-shaped body (10) for housing said magnets (12, 14);
- at least two openings (28, 30) for inserting said magnets (12, 14) in said seats (24, 26), wherein said openings (28, 30) are in the opposite position with respect to said bottom wall (16);
- at least one housing portion (32) which is shaped and sized in such a way that it can house said plate (34);
- at least one retaining portion (36), which is designed to retain said magnets (12, 14) constrained to said box-shaped body (10) in a predetermined position, in order to facilitate the positioning and/or handling of the magnets (12, 14) and the assembly of the housing element (1);
- and
- at least one sealing element (40), which is arranged to prevent the access of unwanted substances inside said seats (24, 26) and said at least one housing portion (32) when the housing element (1) is mounted onto the support and guide magnetic structure (100),
- wherein said retaining portion (36) is shaped and sized in such a way that it can retain said magnets (12, 14) constrained in the respective seats (24, 26) by mutual friction between the surfaces of said magnets (12, 14) and the surfaces of said seats (24, 26), which come into contact with each other, wherein said plate (34) is held in the respective housing portion (32) at least by the magnetic force of said magnets (12, 14), wherein on the external surface of said at least one side wall (18) and/or said at least one end wall (20), which is the surface facing the opposite side with respect to said seats (24, 26), there are obtained:
- at least one notch (38), which is designed to house and retain at least one corresponding sealing element (40);
- connecting means (44) for connecting the housing element (1) with respective connecting means which are provided in said support and guide magnetic structure (100), wherein the connecting means (44) of the housing element (1) and the respective connecting means of the support and guide magnetic structure (100) are of the male/female type and are adapted to snap-connecting the housing element (1) with the support and guide magnetic structure (100),
- wherein said connecting means (44) are formed by a projection with a rounded cross-section, which protrudes from the external surface of said at least one side wall (18) and/or said at least one end wall (20), the housing element (1) being wherein said notch (38) with the corresponding sealing element (40) are at an average distance (D1) from said openings (28, 30) which is less than the average distance (D2) of said projection from said openings (28, 30), hence said notch (38) with the corresponding sealing element (40) are at an average distance (D3) from said bottom wall (16) which is greater than the average distance (D4) of said projection from said bottom wall (16), and in that the maximum distance (L1) between the opposite terminal ends of said projection is greater than the maximum distance (L2) between the corresponding opposite terminal ends of said sealing element (40).