DOOR HINGE

• US 20100148646A1
• Filed: 05/18/2007
• Published: 06/17/2010
• Est. Priority Date: 05/18/2007
• Status: Active Grant

• Current Assignee: Faringosi Hinges S.r.l.
• Original Assignee: Faringosi Hinges S.r.l.
• Inventors: Bettinzoli, Angelo
• Granted Patent: US 8,683,653 B2
• Time in Patent Office: Days
• US Class Current: 312/326
• CPC Class Codes: E05F 1/1261 for counterbalancing
• CPC Class Codes: E05F 3/22 Additional arrangements for closers, e.g. for holding the wing in opened or other position
• CPC Class Codes: E05F 5/02 specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
• CPC Class Codes: E05F 5/10 with piston brakes
• CPC Class Codes: E05Y 2201/21 Brakes
• CPC Class Codes: E05Y 2201/256 with pistons or vanes
• CPC Class Codes: E05Y 2201/264 linear
• CPC Class Codes: E05Y 2900/308 for ovens
• CPC Class Codes: F16F 9/3214 of pistons F16F9/0227 and F16F9/36 take precedence; throttling passages in or on piston body F16F9/3405
• CPC Class Codes: F16F 9/49 Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping fluid-actuated displacement devices with means for accelerating or decelerating the stroke F15B15/22
• CPC Class Codes: F24C 15/023 Mounting of doors, e.g. hinges, counterbalancing

Abstract

A hinge (1) for a door opening over a horizontal axis, of the type comprising first and second supports (2, 3) that can be fixed to a compartment structure and to a door, at least rotatably constrained to each other through a pin (10). The hinge (1) comprises a fluidic cylinder-piston damper (9) of the type with internal flow leakage of the fluid contained therein. The damper (9) has a piston (18, 19) with a through-hole (20). The piston (18, 19) can have an appendix (19) that non-sealingly engages a chamber (17) when the door is closed, to increase the dampening. The hinge (1) has elastic means (7) such as a spring, to counteract the falling movement of the door when it is opened. The hinge (1) can be of the cam type, with a cam (4) and an abutment (5).

Claims

1. A hinge for a door at least partially covering a compartment, of the type comprising first and second supports that are fixed to the compartment structure and to said door, respectively, or vice versa, and that are at least rotatably constrained to each other, and at least one fluidic damper, of the cylinder-piston type, the piston of which beings constrained, either directly or indirectly, to said first support, or to said compartment structure, and the cylinder of which being constrained, either directly or indirectly, to said second support, or to said door, or vice versa, characterized in that said at least one damper is of the type with internal flow leakage of the fluid contained therein.

2. The hinge according to claim 1, characterized in that it comprises movement guide means having at least one moving arm being engaged with a respective abutment, which are functionally connected to said first and second supports respectively, or vice versa, and at least one element connected to said movement guide means, which is moving relative to said second support during the movement of said door, said moving element being constrained to the rod of said piston of said at least one fluidic cylinder-piston damper, and said cylinder being fixed to said second support.

3. The hinge according to claim 1, characterized in that said damper comprises at least one region, within said cylinder, wherein a higher resistance is offered against the relative movement, at least in one direction, of said piston, relative to other inner regions of said cylinder.

4. The hinge according to claim 3, characterized in that said at least one inner higher-resistance region of said cylinder is defined by the geometrical configuration of said cylinder and/or of said piston, and/or of the sections for internal flow leakage of the fluid.

5. The hinge according to claim 4, characterized in that in said inner higher-resistance region of the damper, said cylinder and said piston are configured to define a variation of the fluid flow section at least in one direction of the travel of said piston.

6. The hinge according to claim 2, wherein said higher-resistance region is located at that end of said cylinder towards which said piston moves when said moving element moves relative to said second support during the movement of said door to at least partially close said compartment.

7. The hinge according to claim 3, wherein the piston of said at least one fluidic damper comprises a cylindrical body sliding within said cylinder, on a base thereof being formed at least one cylindrical appendix of reduced section, which is suitable to be non-sealingly engaged within a chamber, also of reduced section, which is placed at one end of said cylinder, said chamber being said higher-resistance inner region.

8. The hinge according to claim 1, characterized in that said piston is sealingly sliding within said cylinder and comprises a through hole for internal flow leakage of said fluid.

9. The hinge according to claims 7, characterized in that an inlet port of said internal flow leakage hole is formed on said reduced-section appendix, the other inlet port being formed on the base of said cylindrical body opposite to that from which said appendix projects.

10. The hinge according to claim 9, characterized in that an inlet port of said internal flow leakage hole is formed on the side wall of said appendix of cylindrical section.

11. The hinge according to claim 1, characterized in that it comprises elastic means counteracting the movement of said first support relative to said second support, or vice versa.

12. The hinge according to claim 11, characterized in that between said moving element and said second support said elastic means are interposed which counteract the sliding movement, at least in one direction, of said moving element.

13. The hinge according to claim 11, wherein said elastic means counteract the sliding movement of said moving element relative to said second support at least while said door is moving to at least partially open said compartment.

14. The hinge according to claim 3, wherein said moving element coincides with an end of said at least one moving arm with which said movement guide means are provided.

15. The hinge according to claim 3, wherein said moving element is constrained to said at least one moving arm with which said movement guide means are provided.

16. The hinge according to claims 2, wherein said at least one moving arm of said movement guide means comprises at least one portion acting as a cam and said respective abutment comprises at least one follower for said portion acting as a cam.

17. An oven door comprising a hinge of claim 1.

18. A cabinet door comprising a hinge of claim 1.