Locking device for open-close mechanism of a cabinet
First Claim
1. A locking device for locking an open-close mechanism such as door on a cabinet, to be freely opened and closed, comprising a fastening member attached to either the open-close mechanism or the cabinet and a lock unit attached to the other counterpart at a position corresponding to the fastening member, characterized in that:
- the lock unit comprises a lock lever having a hook at front end, a control lever, first and second springs, a base member and a rolling body supported on the control lever,the lock lever being rotatably supported by a horizontal shaft on the base member of the lock unit and pressed by the first spring in such a way that the hook moves downward, said lock lever including a lower side having a tapered face for receiving a force for moving the hook upwardly,the control lever being provided beneath the lock lever for sliding movement in a longitudinal direction under force from the second spring, said second spring having a larger pressing force relative to the first spring, the front part of said control lever protruding from the base member, said control lever including a projection for pressing against the tapered face of the lock lever, said control ever including a central part adapted to bend in a conical shape upon application of a force in the axial direction causing the rolling body supported thereon to roll out of the turning range of the lock lever, andsaid rolling body being positioned in between a bottom face of the lock lever and a top face of the control lever when the cabinet swings thereby preventing rotation of the lock lever.
1 Assignment
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Accused Products
Abstract
A locking device for the open-close mechanism such as door, drawer and the like of a cabinet, such as cupboard and the like, comprises a fastening member attached to either the open-close mechanism or the cabinet and a lock unit attached to the other counterpart. The lock unit is provided with a lock lever for fastening and unfastening a hook to the fastening member by rotating, and a rolling body which controls rotation of the lock lever in the releasing direction by moving into the path of rotation of the lock lever if the cabinet swings, thus preventing the open-close mechanism of the cabinet from opening in case of an earthquake or the like.
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Citations
13 Claims
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1. A locking device for locking an open-close mechanism such as door on a cabinet, to be freely opened and closed, comprising a fastening member attached to either the open-close mechanism or the cabinet and a lock unit attached to the other counterpart at a position corresponding to the fastening member, characterized in that:
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the lock unit comprises a lock lever having a hook at front end, a control lever, first and second springs, a base member and a rolling body supported on the control lever, the lock lever being rotatably supported by a horizontal shaft on the base member of the lock unit and pressed by the first spring in such a way that the hook moves downward, said lock lever including a lower side having a tapered face for receiving a force for moving the hook upwardly, the control lever being provided beneath the lock lever for sliding movement in a longitudinal direction under force from the second spring, said second spring having a larger pressing force relative to the first spring, the front part of said control lever protruding from the base member, said control lever including a projection for pressing against the tapered face of the lock lever, said control ever including a central part adapted to bend in a conical shape upon application of a force in the axial direction causing the rolling body supported thereon to roll out of the turning range of the lock lever, and said rolling body being positioned in between a bottom face of the lock lever and a top face of the control lever when the cabinet swings thereby preventing rotation of the lock lever. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification