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US 2012/0204611 A1Published application
Exchangeable cylinder lock assembly
AssigneeTong Lung Metal Industry Co., Ltd.
InventorsMing-Shyang CHIOU, Kuang-I LIAO
Life of this patent
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Abstract
An exchangeable cylinder lock includes a plug shell connected to a pin chest. A locking pin is disposed in a radial pin hole in the pin chest and is biased to protrude from an aperture in a cover plate and to engage a lock housing. The locking pin is depressable to retract for disengaging from the lock housing. A locking ring is disposed around the plug proximate to the locking pin, and has at least one indentation. When the plug is rotated using a right key, the locking ring can be rotated to align the indentation with the locking pin so as to permit depression of the locking pin, or to move the indentation away from the locking pin so as to prevent depression of the locking pin.
Claims16
An exchangeable cylinder lock that can be mounted removably in a lock housing, comprising:
- an outer shell having a plug shell defining a cylindrical hole, and a pin chest connected to said plug shell, said pin chest including a first pin hole and a second pin hole, both of which extend along a radial direction of said cylindrical hole;
- a plug disposed inside said cylindrical hole, and having a third pin hole that can be aligned with said second pin hole;
- first and second tumbler pins respectively disposed in said second and third pin holes;
- a cover plate disposed on said pin chest to cover said first and second pin holes, said cover plate having an aperture aligned with said first pin hole;
- a locking pin disposed in said first pin hole and biased to protrude out of said aperture for engaging the lock housing, said locking pin being depressable to retract for disengaging from the lock housing;
- and
- a locking ring disposed around said plug proximate to said first pin hole and rotatable together with said plug, said locking ring having an inner periphery engaging said plug, and an outer periphery capable of abutting against said locking pin, said outer periphery having at least one indentation;
- wherein, when said plug is rotated using a right key, said locking ring can be moved to a non-blocking position, in which said indentation is aligned with said locking pin to permit depression of said locking pin, or to a blocking position, in which said indentation is moved away from said locking pin to prevent depression of said lacking pin.
5 more elements
An exchangeable lock assembly comprising:
- a plug shell having a cylindrical hole;
- a pin chest connected to said plug shell and including a first pin hole and a second pin hole, both of which extend along a radial direction of said cylindrical hole;
- a plug disposed in said cylindrical hole, and having a third pin hole that can be aligned with said second pin hole;
- first and second tumbler pins respectively disposed in said second and third pin holes;
- a cover plate disposed on said pin chest to cover said first and second pin holes, said cover plate having an aperture aligned with said first pin hole;
- a lock housing receiving said plug shell and said pin chest, and having a slot aligned with said aperture;
- a locking pin disposed in said first pin hole and biased to protrude out of said aperture for engagement with said slot of said lock housing, said locking pin being depressable to retract for disengaging from said lock housing;
- and
- a locking ring disposed around said plug proximate to said first pin hole and rotatable together with said plug, said locking ring having an inner periphery engaging said plug, and an outer periphery capable of abutting against said locking pin, said outer periphery having at least one indentation;
- wherein, when said plug is rotated using a right key, said locking ring can be moved to a non-blocking position, in which said indentation is aligned with said locking pin to permit depression of said locking pin, or to a blocking position, in which said indentation is moved away from said locking pin to prevent depression of said locking pin.
7 more elements
An exchangeable cylinder lock that can be mounted removably in a lock housing, comprising:
- an outer shell adapted to be disposed inside said lock housing, and including a cylindrical hole, and a first pin hole spaced apart from said cylindrical hole;
- a plug disposed rotatably in said cylindrical hole;
- a locking pin disposed in said first pin hole and extending substantially in a radial direction of said plug, said locking pin having one end biased to protrude out of said first pin hole for engagement with the lock housing, said locking pin being depressable to retract and disengage from said lock housing;
- and
- a locking ring disposed around said plug and rotatable together with said plug, said locking ring having an inner periphery engaging said plug, and an outer periphery capable of abutting against another end of said locking pin, said outer periphery having at least one indentation;
- wherein, when said plug is rotated using a right key, said locking ring can be moved to a non-blocking position, in which said indentation is aligned with said locking pin to permit depression of said locking pin, or to a blocking position, in which said indentation is moved away from said locking pin to prevent depression of said locking pin.
3 more elements
Dependencies are inferred from the claim text.