Non-upholstered ergonomic seat with anatomical properties for maximum comfort
A seat is configured to be mounted on chairs, benches with seats, stadium seats, and toilet seats. Characteristic for the seat is that an upper surface 1 of the seat is variously shaped such that from the side of a rear edge 2 it slopes downwards, following an arc, towards a front edge 3 of the seat and the upper surface 2 has rear recesses 4 , central recesses 5 , front recesses 6 , and side recesses 7 arranged thereon, symmetrically in relation to the longitudinal symmetry axis of the seat, where all of which are located within a profiled ergonomic niche 8 with a shape similar to the letter H, while transverse arm 9 of the profiled ergonomic niche 8 connects longitudinal arms 10 of the profiled ergonomic niche 8 forming a relief groove. The rear recesses 4 , central recesses 5 , and front recesses 6 have different length and depth, and have an ellipsoidal shape; they are arranged one after the other along the longitudinal arm 10 of the profiled ergonomic niche 8 , and the side recesses 7 are arranged between the central recesses 5 and front recesses 6 and side edges 11 of the seat.
1. A seat having a profiled upper surface with recesses and inclinations of a part of the upper surface, wherein the upper surface of the seat is variously shaped such that from a rear edge, said upper surface is inclined downwards, following an arc, towards a front edge of the seat, and the upper surface has rear recesses, central recesses, front recesses, and the side recesses arranged thereon, symmetrically in relation to the longitudinal symmetry axis of the seat, where all of which are located within a profiled ergonomic niche with a shape similar to the letter H, while a transverse arm of the profiled ergonomic niche connects longitudinal arms of the profiled ergonomic niche forming a relief groove, while the rear recesses, central recesses, and front recesses have different lengths and depths, and have an ellipsoidal shape; and are arranged one after the other along a longitudinal arm of the profiled ergonomic niche, and side recesses are arranged between the central recesses and front recesses and side edges of the seat.
2. The seat according to claim 1 , wherein the rear recesses, central recesses, and front recesses are situated at angles in relation to a longitudinal symmetry axis of the seat, wherein the central recesses are deeper than the front recesses, and wherein an angle of the front recesses increases towards the front edge of the seat.
3. The seat according to claim 1 , wherein the upper surface of the seat, from the rear recesses, central recesses, and front recesses towards the side edges, forms bulges which decrease in height from the side of the rear edge of the seat towards the front edge of the seat; and in a front part from the side of the front edge, the seat surface is flat.
4. The seat according to claim 1 , wherein the side recesses are located on bulges of the upper surface of the seat, which are situated approximately halfway across the bulges, between the side edges and a longitudinal arm of the profiled ergonomic niche.
5. The seat according to claim 1 , wherein the side recesses have longer axes arranged at an angle in relation to longitudinal arms of the profiled ergonomic niche.
6. The seat according to claim 1 , wherein the rear recesses and the central recesses, from the side of the rear edge of the seat to a central point of each of the central recesses, are situated at an angle in a range of 8-14 degrees, optionally 12 degrees, and wherein the central recesses and the front recesses, from the central point of each of the central recesses through the front recesses towards the front edge of the seat, the central recesses and the front recesses are situated at an angle in the range of 16-20 degrees, optionally 18 degrees.
7. The seat according to claim 1 , wherein centers of the central recesses are deepest at approximately ⅓ of a length of the seat from a rear edge of the seat thereof, respectively.
8. The seat according to claim 1 , wherein the side recesses are situated at approximately ⅖ of a length of the seat from a rear edge of the seat thereof and at approximately 1/10 of a width of the seat from a side edge of the seat thereof, respectively.
9. The seat according to claim 1 , wherein the rear recesses, central recesses, front recesses, and side recesses are arranged such that drawing a line through the central recess and a farthest point towards the front edge of the seat of the front recess forms an ascending line, and drawing a line through the side recess and a farthest point towards the front edge of the seat of the front recess forms a descending line; the lines intersect to form an X.
10. The seat according to claim 1 , wherein said seat is a seat part of at least one of chairs, benches with seats, stadium seats, or said seat is a toilet seat.
11. The seat according to claim 1 , wherein said seat has a centrally located pear shaped opening which has a taper in a front part of the seat.
12. The seat according to claim 11 , wherein an edge of an opening overlaps a part of the central recess and the relief groove.
13. The seat according to claim 1 , wherein said seat further comprises a lumbar support which is connected to the sea via a bracket attached to a bottom surface of the seat and to a rear surface of the lumbar support; the lumbar support is an element with a substantially flat rectangular back and a profiled contact part that has a recessed central part and side surfaces obliquely situated in relation to the recessed central part; wherein a surface of the recessed central part and obliquely situated side surfaces are convex, and between the recessed central part and the obliquely situated side surfaces, there are arranged concave triangular surfaces.
14. The seat according to claim 13 , wherein the profiled contact part of the lumbar support along a longer symmetry axis thereof is bulged along a radius R 25°; a profiled recessed central part is substantially half the width of the lumbar support, and a remaining width of a backrest is formed by two obliquely situated side surfaces, where along side edges of the profiled recessed central part in a direction of a longer axis, there are arranged concave triangular surfaces with a radius of R 100° and a width at the base of a triangle in a range of 15-25 mm, optionally 20 mm, the apices of which meet at half of a height of a backrest at a height of an longer axis of symmetry, and profiled side surfaces extend from an edge of concave triangular surfaces towards an outer side edge of the lumbar support, and an inclination angle α thereof is in a range of 20-30°, optionally 24°, and a length of said side surfaces is optionally in a range of 55-75 mm, optionally 65 mm.
15. The seat according to claim 1 , wherein said seat is made of one or more materials that are easy to disinfect, optionally of wood-based materials, plastics or metal.