Door Hinge Device with Fulcrum at Variable Position

• US 20080276425A1
• Filed: 12/21/2006
• Published: 11/13/2008
• Est. Priority Date: 12/22/2005
• Status: Active Grant

• Current Assignee: C.M.I. S.r.l.
• Original Assignee: C.M.I. S.r.l.
• Inventors: Ghedini, Teresa, Degli Esposti, Ermes, Gherardi, Eros
• Granted Patent: US 7,934,290 B2
• Time in Patent Office: Days
• US Class Current: 16/319
• CPC Class Codes: A47L 15/4261 Connections of the door to the casing, e.g. door hinges
• CPC Class Codes: E05D 2003/163 Horizontal pivot-axis
• CPC Class Codes: E05D 3/06 with two or more pins E05D7/08 takes precedence
• CPC Class Codes: E05D 3/16 with seven parallel pins and four arms
• CPC Class Codes: E05F 1/1261 for counterbalancing
• CPC Class Codes: E05F 1/1276 for counterbalancing
• CPC Class Codes: E05Y 2900/30 for domestic appliances
• CPC Class Codes: E05Y 2900/304 for dishwashers
• CPC Class Codes: E05Y 2900/308 for ovens
• CPC Class Codes: F24C 15/023 Mounting of doors, e.g. hinges, counterbalancing

Abstract

An hinge device with fulcrum at variable position for a door (2) of a structure (3) is provided with connecting members, first (4) and second (5), mutually connected and respectively fit to be fixed to the door (2) and to the structure (3) for rotating the door between the extreme closing (C) and the extreme opening (A) in which the door (2), in an operating condition of the structure, is respectively almost vertical and approximately horizontally orientated.

The second connecting member (5) has a first fixed pivot (6) and a second fixed pivot (7) for the rotating connection respectively with a first balancing mean (8) and a second balancing mean (9) mutually bound.

The end opposite to the first fixed pivot (6) of the first balancing mean (8) is connected by means of a first mobile pivot (10) to an end of the first arm mean (11) having the remaining end connected to the first connecting member (4) by means of a second mobile pivot (12).

The end opposite to the second fixed pivot (7) of the second balancing means (9) is connected by means of a third mobile pivot (13) to the first connecting member (4).

Claims

1. ) Hinge device with fulcrum at variable position for a door (2) of a structure (3) provided with connecting members, first (4) and second (5), mutually connected and respectively fit to be fixed to the door (2) and to the structure (3) for rotating the door between the extreme closing (C) and the extreme opening (A) in which the door (2), in an operating condition of the structure, is respectively almost vertical and approximately horizontally orientated;

said device (1) being characterized in that the second connecting member (5) has a first fixed pivot (6) and a second fixed pivot (7) for the rotating connection respectively with a first balancing mean (8) and a second balancing mean (9) mutually bound;

the end opposite to the first fixed pivot (6) of the first balancing mean (8) is connected by means of a first mobile pivot (10) to an end of the first arm mean (11) having the remaining end connected to the first connecting member (4) by means of a second mobile pivot (12);

the end opposite to the second fixed pivot (7) of the second balancing means (9) is connected by means of a third mobile pivot (13) to the first connecting member (4).

2. ) Device according to claim 1 characterized in that the first (8) and second (9) balancing means are mutually bound by means of a second arm means (14) bound to them with binding pivots respectively first (15) and second (16).

3. ) Device according to claim 1 characterized in that comprises first elastic means (17) fit to provide the connecting members, first (4) and (5), with a closing elastic force.

4. ) Device according to claim 2 characterized in that the first fixed pivot (6) is positioned higher and moved inside the structure (3) with respect to the second fixed pivot (7) and that, in the operating closing condition (C), the first mobile pivot (10) is placed between the vertical passages for the fixed pivots (6, 7) higher than them;

the second mobile pivot (12) is placed higher and more external of the third mobile pivot (13) and both are placed below and external to the second fixed pivot (7);

the binding pivots, first (15) and second (16), are placed between the vertical passages for the fixed pivots (6, 7), the first binding pivot (15) having the same height or a bit higher than the first fixed pivot (6), the second binding pivot (16) having the same height or a bit lower than the second fixed pivot (7).

5. ) Device according to claim 2 characterized in that the mobile and binding pivots (10, 12, 13, 16, 15) form the vertexes of an irregular and deformable pentagon.

6. ) Device according to claim 5 characterized in that the sides of the irregular pentagon comprised between the first binding pivot (15) and the first mobile pivot (10), between the first mobile pivot (10) and the second mobile pivot (12), between the second mobile pivot (12) and the third mobile pivot (13), between the third mobile pivot (13) and the second binding pivot (16) and between the first binding pivot (15) and the second binding pivot (16) have the lengths approximately equal to 1.5;

4.4;

1.4;

3.3 and 0.7 times of the distance between the fixed pivots (6, 7).

7. ) Device according to claim 3 characterized in that an end of the first balancing mean (8) almost opposed to the first mobile pivot (10) with respect to the first fixed pivot (6) has a first coupling mean (18) for an end of the first elastic means (17) operating in traction and having the remaining end connected by means of a second coupling means (19) to the second connecting member (5).

8. ) Device according to claim 1 characterized in that an end of the first balancing mean (8) opposite to the first mobile pivot (10) has a matching mean (20) fit, in the conditions next to the extreme opening condition, to match respective second elastic means (21) transmitting to the first balancing mean (8) an elastic force in contrast to the weight force applied to the door (2).

9. ) Device according to claim 1 characterized in that the end portion of the first arm mean (11) having the first mobile pivot (10), has a cam surface (22) fit, in the conditions next to the extreme closing condition, to match a follower mean (23) driven by related second elastic means (21), said cam surface (22) being shaped to carry out at least a removable stop of the door (2) in a partial opening condition.

10. ) Device according to claim 9 characterized in that the follower mean (23) comprises a body (29) centrally pivoted, by means of a respective pivot (28) to the second connecting member (5), having an end bound to an end of the respective second elastic means (21) and the remaining end provided with an idle wheel (27) fit to rotate along the cam surface (22) adherent thereto due to the elastic force of the second elastic means (21).

11. ) Device according to claim 10 characterized in that the body (29) of follower mean (23), has a pivot for limiting the oscillation (30) movable into a slot (31) of the second connecting member (5).

12. ) Device according to claim 8 characterized in that the first balancing mean (21) of the matching mean (2) and of the follower mean (23) are constituted by the same element comprising at least a spring telescopic guide (24) for a spring (25) operating in compression and connected to the second connecting member (5) by means of guiding means (26).

13. ) Device according to claim 1 characterized in that the first balancing mean (8) is provided with a first limit stop mean (32) fit to match a first beating mean (33) fixed to the second connecting member (5) in the extreme opening condition (A).

14. ) Device according to claim 13 characterized in that the first beating mean (33) is carried out in the guiding means (26).

15. ) Device according to claim 1 characterized in that the first arm mean (11) has in proximity of the second mobile pivot (12) a second stop limit mean (34) fit to match a second beating mean (35) of the first connecting member (4) in the extreme opening condition (A).

16. ) Device according to any of claim 1, characterized in that the end next to the first mobile pivot (10) of the first arm mean (11) has a third limit stop mean (36) and the end next to the second fixed pivot (7) of the second balancing mean (9) has a third stop means (37), said third limit stop mean (36) and the stop mean (37) being fit for the mutual matching in the extreme opening condition (A).

17. ) Device according to claim 1 characterized in that the first arm mean (11), near to the second mobile pivot (12) has a protruding mean (38) sliding on a flat surface of the first connecting member (4).

18. ) Device according to claim 1 characterized in that the first connecting member (4) is removably fixed to the door (2) by means of an assembly (40) fixed to the door.

19. ) Device according to claim 18 characterized in that the assembly member (40) has a longitudinal concavity (41) fit to house the protruding mean (42) of the first connecting member (4) and a protrusion of the second mobile pivot (12) which can be inserted in said longitudinal concavity (41) by means of a respective opening (43) lower positioned in the extreme opening condition (A).

20. ) Device according to claim 18 characterized in that the internal portion of the first connecting (4) and opposite to the third mobile pivot (13) has a first seat (44) for a first assembly pivot (46) of the assembly member (40) and can be blocked in removable manner in said seat by means of a stop mean (45), manually movable, of the first connecting member (4).

21. ) Device according to claim 18 characterized in that the end of the first connecting member (4) opposite to the third mobile pivot (13) has a second seat (47) for a second assembly pivot (48) of the assembly member (40).

22. ) Device according to claim 18 characterized in that the external portion of the first connecting member (4) next to the third mobile pivot (13) has a third seat (49) for an assembly mean (50) of the assembly member (40).

23. ) Device according to claim 22 characterized in that the assembly mean (50) consists of an end of a refolded border of the assembly member (40).

24. ) Device according to claim 22 characterized in that the seats (44, 47, 49) are upwardly opened in the extreme closing condition (C).

25. ) Device according to claim 18 characterized in that comprises an assembly arm (51) having an end rotably connected by means of a respective pivot (52) to the first arm mean (11) and manually movable to match with the remaining end an edge of the second connecting member (5) to block the first connecting member (4) in a condition for the easy assembly to the assembly member (40) of the door.