Cupboard door balance system
AssigneeCmech (Guangzhou) Ltd.
InventorDing Gou Kun
Life of this patent
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Abstract
A balance system used with a door of a cupboard comprises a transmission shaft, a first pulley on the transmission shaft, and a balance component. The first pulley is connected to a door belt, one end of the door belt is secured to the first pulley, and the other end of the belt is connected to the door. The balance component comprises a balancing member, a balancing belt and a second pulley on the transmission shaft. One end of the balancing belt is connected to the second pulley, and the other end of the balancing belt is connected to the balancing member, such that the balancing member is hung on the second pulley. The first pulley and the second pulley rotate synchronously, and the door belt and the balancing belt are wound oppositely. With the balance system, a small driving force can open/close the door.
Claims21
A cupboard, comprising:
- a box with an open front, a back, and opposite sides;
- a door mounted to the box for vertical movement between open and closed positions relative to the open front;
- pulley system mounted adjacent to the box back and connected to the door;
- and
- a weight connected to the pulley system at a location behind the door to counter-balance the door.
A cupboard having a door and a pulley system for opening and closing the door, the pulley system comprising:
- first and second pulleys rotatably mounted on the cupboard behind the door;
- a first belt extending horizontally between the first pulley and the door;
- a second belt extending vertically from the second pulley;
- a weight on a lower end of the second belt to counter-balance the door.
Dependencies are inferred from the claim text.