Abrégé

Provided is a link device, which can absorb a load and noise which are produced when a door of a refrigerator is inaccurately installed. The link device transfers an automatic return force of a hinge device to a door in which the hinge device is installed at a position spaced from a rotational axis of the door, and includes: a support bracket which is fixed to a main body and into which the rotational shaft of the door is installed; a driving link whose one end is combined with the shaft of the hinge device and which transfers the automatic return force of the hinge device when the door is closed; a follower link whose both ends are pivotably combined between the other end of the driving link and the support bracket to thus enforce the door to return to an initial position according to the automatic return operation; and first and second ball joints which combine both ends of the follower link pivotably with the driving link and the support bracket and movably support a pivot shaft.

Classes IPC  ?

• F25D 23/02 - PortesCouvercles

Abrégé

Provided is a height controllable hinge device having a height control function which enables a user to easily accurately install the door in a door frame even though the size of the door mismatches the door frame. The hinge device includes: a first cylindrical groove which is formed in the lower end of the door; a fixing bracket in which guide protrusions which play a role of a linear guide are radially arranged at every predetermined angle; a hinge shaft in which a screw thread is formed on the outer circumference of a screw connector and guide grooves corresponding to the guide protrusions are radially formed in the screw connector, and a cylindrical protrusion is formed in the screw connector, and in which the guide protrusions are slidably coupled with the guide grooves; and a control nut which is screw-combined with the screw connector, in which the hinge shaft ascends or descends according to rotation of the control nut.

Classes IPC  ?

• E05D 7/08 - Charnières, gonds ou pivots de structure particulière utilisées dans les suspensions comportant deux broches placées sur les bords opposés du battant, spécialement en haut et en bas, p. ex. tourillons
• E05D 7/00 - Charnières, gonds ou pivots de structure particulière
• F25D 23/00 - Caractéristiques générales de structure

Abrégé

Provided is a buried type hinge apparatus having an automatic return function in which a closing force of a door is provided with only a torsion spring. The hinge apparatus includes: a single body which is buried in a door; a shaft whose one end is projected through the upper cap and is rotatably supported; a piston which is slidably installed in the single body; a rotational/rectilinear motion conversion unit which converts a rotational motion of the shaft into an axial rectilinear motion of the piston according to opening and closing of the door; a damping unit that controls a descent and ascent speed of the piston, and provides a damping function selectively when the piston rises up; and a return unit that provides a restoring force for the rotational/rectilinear motion conversion unit so that the door is returned to an initial position of the door at the time of closing the door.

Classes IPC  ?

• E05D 3/06 - Charnières ou gonds à broches à plusieurs broches
• E05D 7/00 - Charnières, gonds ou pivots de structure particulière

Abrégé

A hinge apparatus having an automatic return function for building materials is provided, in which a return spring is removed to thereby offer a closing force of each door with only a torsion spring. The hinge apparatus includes an upper body; a lower body; a shaft whose lower end portion is rotatably installed in the lower body; a piston whose outer circumference is slidably installed along the inner surface of the lower body', a rotational/linear motion converter which converts a rotational motion of the shaft into an axial linear motion of the piston according to rotation of the door; a damping unit which provides a damping function selectively where the piston ascends according to return of the door; a torsion spring which rotates the shaft in the direction returning the door at the closing time; and a clutch unit for stopping an increment of an elastic force due to reverse twisting of the spring where an opening angle reaches a clutch stop start angle, or for restoring the elastic force of the spring.

Classes IPC  ?

• E05D 3/00 - Charnières ou gonds à broches
• E05F 3/20 - Appareils de fermeture ou d'ouverture à dispositif de freinage, p. ex. ralentisseursStructure des dispositifs de freinage pneumatique ou à liquide dans les charnières ou gonds

Abrégé

Provided is an automatic return hinge apparatus which includes a torsion spring to reinforce a door closing force and a clutch unit to minimize a door opening force, the torsion spring and the clutch unit being installed in the upper side thereof, and at least one oil-hydraulic circuit installed in the lower side thereof for controlling a restoring force by a return spring, thereby minimizing the diameter of the hinge apparatus. The hinge apparatus includes a first oil-hydraulic circuit providing a uniform damping power, and a second oil-hydraulic circuit which can variably control the damping power according to the ascending position of a piston. Moreover, the hinge apparatus can provide a restoring force for an actuator with only a clutch unit and a torsion spring. The hinge ap paratus emp loys a clutch unit connected with a to rsion sp ring and an oil-hydraulic circuit, which are separately manufactured from each other.

Classes IPC  ?

• E05F 3/20 - Appareils de fermeture ou d'ouverture à dispositif de freinage, p. ex. ralentisseursStructure des dispositifs de freinage pneumatique ou à liquide dans les charnières ou gonds