초록 ▼

A bed which is movable between a horizontal open position and a vertical closed position wherein a counterbalancing mechanism comprising two levers and gas springs are placed at the foot of the bed in order to provide a lifting moment for help in closing the bed and a gravitational restraint when op

A bed which is movable between a horizontal open position and a vertical closed position wherein a counterbalancing mechanism comprising two levers and gas springs are placed at the foot of the bed in order to provide a lifting moment for help in closing the bed and a gravitational restraint when opening the bed.

대표청구항 ▼

A bed which is moved between a horizontal open position for use and a vertical closed position for storage, and a counterbalancing mechanism which includes first pivot means which supports one end of said bed and provides first pivot with a first pivot axis about which said bed is swung in moving be

A bed which is moved between a horizontal open position for use and a vertical closed position for storage, and a counterbalancing mechanism which includes first pivot means which supports one end of said bed and provides first pivot with a first pivot axis about which said bed is swung in moving between said open and closed positions with said bed having a rigid frame and means which cooperates to provide said first pivot means, said counterbalancing mechanism comprising a rigid fixed structure and two lever and gas-spring assemblies mounted thereon, said rigid fixed structure comprising two support units spaced from each other substantially the width of said bed and positioned whereby said one end of said bed is between said support units when said bed is in said closed position, said rigid fixed structure also including means rigidly attaching said support units stationary in said spaced relationship, said lever and gas-spring assemblies being mounted respectively upon said support units and each including a lever and second pivot means therefor which provides a second pivot axis parallel to said first pivot axis and spaced horizontal and vertical distances from said first pivot axis with said horizontal distance being substantially equal to the length of said lever, each of said lever and gas-spring assemblies also including a link interconnecting the central portion of said lever to said frame with the connection to said frame being adjacent the bottom of said bed and spaced horizontally away from its support unit when said bed is in said open position and being positioned substantially above said first pivot when said bed is in said closed position, and a gas spring which is mounted to exert a force on said lever which is transmitted through said link to provide a lifting moment on said bed about said first axis, the relationship between said gas spring and said lever and said link and the pivot axes thereof being such that said lifting moment varying in a pattern which is similar to the pattern of the moment of the force of gravity about said first pivot axis as said bed is moved between said open and closed positions.