Lifting system for leaves of furniture
First Claim
1. A lifting system that oscillate about at least one horizontal axis between a closed position and a raised open position, the lifting system comprising a supporting body that is configured to connect to a fixed portion of a piece of furniture, a system of articulated levers which are configured to connect said supporting body to a leaf of the piece of furniture, said system of levers comprising a first lever which has a first end directly connected rotatably to said supporting body by way of a rotation pin and a second lever which has a first end that is configured to directly connect rotatably to an element for fixing on said leaf of the piece of furniture, said first lever and said second lever being mutually articulated at respective second ends and elastic actuation means that are configured to connect to said system of articulated levers in order to generate a rotation torque for said system of levers,comprising means for increasing said rotation torque, which cooperate with said elastic actuation means in order to increase said rotation torque at least along a portion of the oscillation in a direction for opening the leaf between the closed position and the raised open position wherein said means for increasing the torque comprise cam means provided on at least one of the first lever and the second lever, wherein said cam means comprise:
- a first cam element connected to said first lever, said elastic actuation means comprising first axially deformable elastic means, said first axially deformable elastic means connected to said first cam element and said first axially deformable elastic means arranged between said supporting body and said first end of said first lever, wherein said second end of said first lever opposes the first end of said first lever,a second cam element connected to said second lever, said elastic actuation means comprising second axially deformable elastic means, which are connected to said second cam element by way of a first sliding or rolling means configured to slide by the second lever, and wherein said second axially deformable elastic means is between said first end of said first lever and said said second cam element.
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Accused Products
Abstract
A lifting system for leaves of furniture that oscillate about at least one horizontal axis comprises a supporting body which can be connected to a fixed portion of the piece of furniture, a system of articulated levers with a first lever and a second lever which connect the supporting body to a leaf of the piece of furniture, and elastic actuation elements which are functionally connected to the system of articulated levers in order to generate a rotation torque for the system of levers; the lifting system further comprises elements for increasing the rotation torque which cooperate with the elastic actuation elements in order to increase the rotation torque at least along a portion of the oscillation in the direction for opening the leaf that includes the raised position of the leaf.
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Citations
14 Claims
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1. A lifting system that oscillate about at least one horizontal axis between a closed position and a raised open position, the lifting system comprising a supporting body that is configured to connect to a fixed portion of a piece of furniture, a system of articulated levers which are configured to connect said supporting body to a leaf of the piece of furniture, said system of levers comprising a first lever which has a first end directly connected rotatably to said supporting body by way of a rotation pin and a second lever which has a first end that is configured to directly connect rotatably to an element for fixing on said leaf of the piece of furniture, said first lever and said second lever being mutually articulated at respective second ends and elastic actuation means that are configured to connect to said system of articulated levers in order to generate a rotation torque for said system of levers,
comprising means for increasing said rotation torque, which cooperate with said elastic actuation means in order to increase said rotation torque at least along a portion of the oscillation in a direction for opening the leaf between the closed position and the raised open position wherein said means for increasing the torque comprise cam means provided on at least one of the first lever and the second lever, wherein said cam means comprise: -
a first cam element connected to said first lever, said elastic actuation means comprising first axially deformable elastic means, said first axially deformable elastic means connected to said first cam element and said first axially deformable elastic means arranged between said supporting body and said first end of said first lever, wherein said second end of said first lever opposes the first end of said first lever, a second cam element connected to said second lever, said elastic actuation means comprising second axially deformable elastic means, which are connected to said second cam element by way of a first sliding or rolling means configured to slide by the second lever, and wherein said second axially deformable elastic means is between said first end of said first lever and said said second cam element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification