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US 8,881,562 B2Granted
Mortise lock
AssigneeStanley Security Solutions Taiwan Ltd.
InventorsTsung-Chung Huang, Cheng-Chung Liu, Wei-Liang Chiang, Ju-Lin Yang, Song-Gen Shyu, Ching-Chuan Kuo
Life of this patent
Estimating the term…
Abstract
A mortise lock is provided with a reinforcing plate to enhance structural rigidity and robustness for resistance against external destructive pulling forces. The reinforcing plate is disposed in abutment with an exterior cover and a door panel, and is mounted on a mounting post of the exterior cover. The reinforcing plate has a notch to receive and engage a key lock. A securing plate may be disposed between and in abutment with the door panel and a main body of a torsional returning unit which is connected to an exterior handle to further increase structural rigidity.
Claims14
A mortise lock mountable on a door panel, comprising:
- a latch unit having a key lock hole;
- an exterior cover having a base plate portion, an aperture formed in said base plate portion in alignment with said key lock hole, a mounting post projecting inwardly from an inner surface of said base plate portion, a peripheral wall projecting inwardly and laterally from said base plate portion and surrounding said aperture and said mounting post;
- a key lock disposed in said aperture and said key lock hole, said key lock being interlocked with said key lock hole and having an outer periphery that is formed with a first engaging part;
- a torsional returning unit and a securing plate, said exterior cover further having a pair of internally threaded securing post, said torsional returning unit being mounted on said securing posts and disposed between said exterior cover and said securing plate, said securing plate having securing post holes each of which is disposed around one of said securing posts;
- and a reinforcing plate mounted on said mounting post and disposed around said key lock, said reinforcing plate including a mounting post hole disposed around said mounting post, a notch that receives said key lock, and a second engaging part disposed in proximity to said notch to engage said first engaging part, said reinforcing plate abutting against said base plate portion and having a lateral flange that projects inwardly away from said base plate portion and that has an inner end substantially flush with an inner end of said peripheral wall of said exterior cover, said lateral flange being adapted to abut against the door panel.
2 more elements
A mortise lock comprising:
- a latch unit having a key lock hole;
- an exterior cover having a base plate portion, an aperture formed in said base plate portion in alignment with said key lock hole, a securing post projecting inwardly from an inner surface of said base plate portion, and a peripheral wall projecting inwardly and laterally from said base plate portion and surrounding said aperture and said securing post;
- a key lock extending through said aperture and interlocked with said key lock hole;
- a securing plate mounted on said securing post, and having a securing post hole disposed around said securing post, and a transmission rod hole;
- an exterior handle attached to said exterior cover;
- a torsional returning unit having a main body that is mounted on said securing post and that is disposed between said exterior cover and said securing plate, and a cam member that projects from said main body to said securing plate;
- and a transmission rod connected to said exterior handle to actuate said latch unit and extending through said cam member and said transmission rod hole;
- said securing plate having an outer side engaging said main body and an inner side adapted to engage the door panel.
5 more elements
A mortise lock comprising:
- a latch unit having a key lock hole;
- an exterior cover having a base plate portion, an aperture formed in said base plate portion in alignment with said key lock hole, a pair of mounting posts and a pair of securing posts, all of which project inwardly from an inner surface of said base plate portion, and a peripheral wall projecting inwardly and laterally from said base plate portion and surrounding said aperture and said mounting and securing posts;
- a key lock disposed in said aperture and said key lock hole, said key lock being interlocked with said key lock hole and having an outer periphery that is formed with a first engaging part;
- a reinforcing plate mounted on one of said mounting posts, disposed around said key lock and abutting against said base plate portion, said reinforcing plate including a notch that receives said key lock, a second engaging part disposed in proximity to said notch to engage said first engaging part, and a lateral flange projecting inwardly away from said base plate portion and having an inner end substantially flush with an inner end of said peripheral wall of said exterior cover, said lateral flange being adapted to abut against the door panel;
- an exterior handle attached to said exterior cover;
- a torsional returning unit having a main body that is mounted on said securing posts, and a cam member that projects from said main body;
- and a transmission rod connected to said exterior handle to actuate said latch unit and extending through said cam member.
4 more elements
Dependencies are inferred from the claim text.