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US 9,044,088 B2Granted
Pull-out guide for drawers
AssigneeJulius Blum GmbH
InventorUlrich Greussing
Life of this patent
Estimating the term…
Abstract
A pull-out guide for drawers includes a body rail to be fastened to a furniture body, a drawer rail to be fastened to the drawer, and a center rail movably mounted between the body rail and the drawer rail. The relative motion sequence of the rails is determined by a forced control unit, and the forced control unit has a synchronization wheel designed as a gear wheel, the synchronization wheel interacting with a running surface arranged or formed on the rails and/or with a running surface of a carriage, which is slidably mounted between the rails. An overload protection device is provided for reversibly lifting the forced control unit of the rails.
Claims23
An extension guide for a drawer, comprising:
- a set of rails including a carcass rail to be fixed to a furniture carcass, a drawer rail to be fixed to the drawer, and a central rail mounted movably between said carcass rail and said drawer rail;
- a carriage mounted displaceably between two rails of said set of rails;
- a positive control mechanism for synchronizing a relative movement sequence of said set of rails, said positive control mechanism including a first synchronization wheel in the form of a pinion gear cooperating with a first running surface on a first one of said set of rails or said carriage, and a second synchronization wheel in the form of a pinion gear cooperating with a second running surface on a second one of said set of rails or said carriage, said first synchronization wheel and said second synchronization wheel being motionally coupled together, said first synchronization wheel being located at a first side of a limb portion of said central rail and said second synchronization wheel being located at a second side of said limb portion of said central rail opposite said first side such that said first synchronization wheel and said second synchronization wheel are separated from each other by said limb portion of said central rail, said first synchronization wheel and said second synchronization wheel being connected by a shaft extending through said limb portion of said central rail;
- and
- an overload protection device configured to operate between said first synchronization wheel and said second synchronization wheel so as to uncouple and desynchronize the relative movement sequence of said set of rails when a predetermined torque acting on said first synchronization wheel and said second synchronization wheel is exceeded wherein said overload protection device comprises a coupling including a first latching wheel and a second latching wheel configured to remain in position relative to each other below the predetermined torque, said first latching wheel and said second latching wheel being made of plastic having different hardnesses so that said first latching wheel is more flexible than said second latching wheel to allow uncoupling of said first latching wheel from said second latching wheel above the predetermined torque.
2 more elements
An extension guide for a drawer, comprising:
- a set of rails including a carcass rail to be fixed to a furniture carcass, a drawer rail to be fixed to the drawer, and a central rail mounted movably between said carcass rail and said drawer rail;
- a carriage mounted displaceably between two rails of said set of rails;
- a positive control mechanism for synchronizing a relative movement sequence of said set of rails, said positive control mechanism including a first synchronization wheel in the form of a pinion gear engaging only a first running surface on only a first one of said carcass rail, said drawer rail, said central rail, or said carriage, and a second synchronization wheel in the form of a pinion gear engaging only a second running surface on only a second one of said carcass rail, said drawer rail, said central rail, or said carriage, said first one being different from said second one, said first synchronization wheel and said second synchronization wheel being motionally coupled together;
- and
- an overload protection device configured to operate between said first synchronization wheel and said second synchronization wheel to uncouple and desynchronize the relative movement sequence of said set of rails when a predetermined torque acting on said first synchronization wheel and said second synchronization wheel is exceeded said first synchronization wheel being located at a first side of a limb portion of said central rail and said second synchronization wheel being located at a second side of said limb portion of said central rail opposite said first side such that said first synchronization wheel and said second synchronization wheel are separated from each other by said limb portion of said central rail, said first synchronization wheel and said second synchronization wheel being connected by a shaft extending through said limb portion of said central rail.
2 more elements
Dependencies are inferred from the claim text.