| 摘要 |
A storage unit includes a cabinet having an open front, and a counterbalanced door arrangement is interconnected with the cabinet for selectively closing the open front of the cabinet. The counterbalanced door arrangement includes an upper door member located between a pair of arms, each of which is pivotably mounted to the cabinet, in combination with a lower door member including a pair of arms pivotably interconnected with the cabinet. The pivotable connections of the upper and lower door member arms to the cabinet provides movement of the upper and lower door members between an open position, in which the upper and lower door members are moved apart, and a closed position in which the upper and lower door members are moved together. A link is interconnected between the upper and lower door member arms, for providing synchronous movement of the upper and lower door members between their open and closed positions. A counterbalancing member is interconnected with each of the upper door member arms for counterbalancing the weight of at least one of the door members. The counterbalancing member may be in the form of a spring having one end fixed to the cabinet and another end connected to each upper door member arm, for counterbalancing the weight of the upper door member toward its open position. The springs provide an assist when moving the upper and lower door members toward their open positions, and function to retain the upper and lower door members in any desired position when release by the user. When the upper and lower door members are in the closed positions, the weight of the upper door member and a forward portion of the upper door member arms is operable to overcome the biasing force of the spring so as to maintain the upper and lower door members in the closed position. |
