Terminal box for electrotechnical uses and corresponding method of manufacturing

1. A terminal box for electrotechnical uses, comprising:

a base designed to be fixed to a supporting surface; and

a closing lid that can be connected thereto,

wherein said base is formed by a shaped metal body comprising a pressed sheet of metal defining four side walls and a rear wall for fixing to the supporting surface,

said four side walls extending transversely from said rear wall and having free edges which perimetrally delimit an open face arranged for coupling with the closing lid, and

said side walls having, along their surface development, a shaped portion perimetrally defining said free edges;

said closing lid is formed by a shaped metal body without joins at least along the development of surfaces constituting perimetral walls of said closing lid; and

said shaped portion includes a V-shaped portion, with two branches and a vertex, said vertex being set towards an internal area of the base;

wherein said terminal box further comprises a pair of supporting brackets fixed internally to the base at two sides opposite to one another;

wherein said supporting brackets have a first angular element and a second angular element fixed in positions corresponding to two internal sharp edges of the base, and a rod-shaped stretch that structually connects said two angular elements and along the development of which are defined holes for fixing a mounting plate;

wherein said angular elements comprise a first plane portion that is set parallel to said rear wall and a second portion that extends in the direction of said rear wall thereby joining said first portion to the rod-shaped stretch, at least one hole being provided on said plane portion and on said second portion;

wherein said rod-shaped stretch is set parallel to said rear wall, the distance between said rod-shaped stretch and said rear wall being shorter than the distance between the plane portion of said angular elements and said rear wall; and

wherein the plane portion of said angular elements is positioned relatively close to said V-shaped portion, substantially at a level of the vertex of said V-shaped portion.

2. The terminal box according to claim 1 , wherein said side walls have a predominant stretch with substantially rectilinear development, said predominant stretch having one end radiused to the rear wall and another end radiused to said shaped portion.

3. The terminal box according to claim 2 , wherein said V-shaped portion two branches and a vertex, with the vertex set towards an internal area of the base.

4. The terminal box according to claim 1 , wherein the two branches have different lengths and form between them an angle of less than 180°.

5. The terminal box according to claim 4 , wherein said angle is between 140° and 170°.

6. The terminal box according to claim 1 , wherein the metal body is formed by a pressed metal sheet defining a substantially plane wall for top closing of a cavity within the terminal box, and wherein four side walls arranged to embrace said shaped portion extend from said plane wall.

7. The terminal box according to claim 1 , wherein said lid is hinged on said base along one of said side walls.

8. The terminal box according to claim 1 , wherein said lid is coupled to the base and is fixed on said angular elements.