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US 8,782,953 B2Granted
Door closing device
AssigneeIndustria Casearia Silvio Belladelli S.R.L.
InventorClaudio Bongiovanni
Life of this patent
Estimating the term…
Abstract
A door closing device (10) for an automatic closing of a door leaf (B) coupled with a floor and/or a doorpost (S) so as to swing. The door closing device (10) comprises a fixed unit (12) that is fixed on the floor and/or the doorpost (S), a translating unit (14) and a rotating unit (16) on which the door leaf (B) is fixed. The coupling of the three units (12, 14, 16) and the presence of spring (38) are such that, when the rotating unit (16) rotates in a first sense of rotation, the translating unit (14) is caused to translate in a direction and such that, when the translating unit (14) translates in an opposite direction, the rotating unit (16) is caused to rotate in an opposite sense of rotation.
Claims7
A door closing device (10) for an automatic closing of a door leaf (B) coupled with a floor and a doorpost (S) so as to swing, characterized in that the door closing device comprises:
- a fixed unit (12) that is fixed on the floor and the doorpost (S);
- a translating unit (14) that is coupled with the fixed unit (12) so as to translate and comprises a first spring (38) and at least a wheel (44) connected with the translating unit so as to rotate, the axis of rotation of said wheel (44) being perpendicular to the direction of translation of the translating unit (14);
- a rotating unit (16) on which the door leaf (B) is fixed and comprises a fixed element (60) that is integral with the rotating unit, and at least a body (51) having an inclined surface (52) in respect to the direction of translation of the translating unit (14);
- said rotating unit (16) is coupled with the translating unit (14) so that the wheel (44) can run along the inclined surface (52) of the body (51) and on rotating in a first sense of rotation the rotating unit (16) the running of the wheel (44) causes a translation of the translating unit (14) and a compression of the first spring (38) against the fixed element (60);
- an expansion of said first spring (38) causes a reverse rotation in respect to the first sense of rotation of the rotating unit (16) and door leaf fixed thereon;
- wherein the rotating unit (16) comprises a first cam (54) having an inclined surface and fixed on the body (51), a through-hole (58, 59) being obtained in said body (51), and wherein the translating unit (14) comprises a pin (30) which passes through the through-hole (58, 59) and with which the wheel (44) is connected so as to rotate;
- a second cam (40) having an inclined surface is fixed on said pin (30), the direction of inclination of said second cam being the same as the one of the first cam (54), so that the inclined surface of the first cam (54) can beat against the inclined surface of the second cam (40);
- wherein a hollow cylindrical structure (20), closed on the upper and lower parts, is fixed on the rotating unit (16), in which cylindrical structure (20) the translating unit (14) can translate and with which the fixed unit (12) is coupled so as to rotate, and a translating piston (46) is arranged in said cylindrical structure (20) so that the inner volume of the cylindrical structure (20) is divided into a lower chamber (66) and an upper chamber (68) for the containment of a fluid;
- at least a duct (72, 74, 76, 78, 84, 86) is obtained in said piston or cylindrical structure (20) for the exchange of fluid between the lower chamber (66) and the upper chamber (68);
- and said piston (46) is coupled with said translating unit (14) so that a translation of the translating unit (14) causes a corresponding translation of the piston (46);
- and
- wherein on the upper part, the piston (46) is connected through a second spring (48) with the upper end of the cylindrical structure (20) and on the lower part, the piston (46) beats against the upper end of the pin (30).
9 more elements
A door closing device (10) for an automatic closing of a door leaf (B) coupled with a floor or a doorpost (S) so as to swing, characterized in that door closing device comprises:
- a fixed unit (12) that is fixed on the floor or the doorpost (S);
- a translating unit (14) that is coupled with the fixed unit (12) so as to translate and comprises a first spring (38) and at least a wheel (44) connected with the translating unit so as to rotate, the axis of rotation of said wheel (44) being perpendicular to the direction of translation of the translating unit (14);
- a rotating unit (16) on which the door leaf (B) is fixed and comprises a fixed element (60) that is integral with the rotating unit, and at least a body (51) having an inclined surface (52) in respect to the direction of translation of the translating unit (14);
- said rotating unit (16) is coupled with the translating unit (14) so that the wheel (44) can run along the inclined surface (52) of the body (51) and on rotating in a first sense of rotation the rotating unit (16) the running of the wheel (44) causes a translation of the translating unit (14) and a compression of the first spring (38) against the fixed element (60);
- an expansion of said first spring (38) causes a reverse rotation in respect to the first sense of rotation of the rotating unit (16) and door leaf fixed thereon;
- wherein the rotating unit (16) comprises a first cam (54) having an inclined surface and fixed on the body (51), a through-hole (58, 59) being obtained in said body (51), and wherein the translating unit (14) comprises a pin (30) which passes through the through-hole (58, 59) and with which the wheel (44) is connected so as to rotate;
- a second cam (40) having an inclined surface is fixed on said pin (30), the direction of inclination of said second cam being the same as the one of the first cam (54), so that the inclined surface of the first cam (54) can beat against the inclined surface of the second cam (40);
- wherein a hollow cylindrical structure (20), closed on the upper and lower parts, is fixed on the rotating unit (16), in which cylindrical structure (20) the translating unit (14) can translate and with which the fixed unit (12) is coupled so as to rotate, and a translating piston (46) is arranged in said cylindrical structure (20) so that the inner volume of the cylindrical structure (20) is divided into a lower chamber (66) and an upper chamber (68) for the containment of a fluid;
- at least a duct (72, 74, 76, 78, 84, 86) is obtained in said piston or cylindrical structure (20) for the exchange of fluid between the lower chamber (66) and the upper chamber (68);
- and said piston (46) is coupled with said translating unit (14) so that a translation of the translating unit (14) causes a corresponding translation of the piston (46);
- and
- wherein on the upper part, the piston (46) is connected through a second spring (48) with the upper end of the cylindrical structure (20) and on the lower part, the piston (46) beats against the upper end of the pin (30).
9 more elements
Dependencies are inferred from the claim text.