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US 7,975,517 B2Granted
Multistage lock apparatus
OwnerWen-Kuei Liu, Chao-Hsuan Liu +1inventors
InventorsWen-Kuei Liu, Chao-Hsuan Liu, Yu-Chun Liu
Life of this patent
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Abstract
A multistage lock apparatus has a base, a disk holder, two selecting devices, two disk sets and at least one interfering element. The base has a mounting panel and a central tube. The disk holder is connected to the base and has a mounting beam, two extending beams, a middle beam, a connecting beam and two mounting spaces. The selecting devices are rotatably connected to the base. The disk sets are respectively mounted on the selecting devices in the mounting specs of the disk holder and each disk set has a driving disk and at least one driven disk. The at least one interfering element is mounted securely on the disk holder and each of the at least one interfering element has a mounting tab and two elastic panels.
Claims8
A multistage lock apparatus for a lock assembly having a door with an outer surface and an inner surface the multistage lock apparatus comprising:
- a base being adapted to mount on the door and having
- a mounting panel being adapted to mount on the outer surface of the door and having
- an inner side being adapted to abut the outer surface of the door;
- multiple through holes formed through the mounting panel;
- and
- multiple first fasteners extended through the through holes to attach the mounting panel securely on the door of the lock assembly;
- and
- a central tube formed on and protruding from the inner side of the mounting panel, extending through the door and having
- an inner end extending through the inner surface of the door;
- an external surface;
- and
- an outer thread formed on the external surface of the central tube near the inner end;
- a disk holder being adapted to mount on the door, connected to the base and having
- a mounting beam being adapted to mount on the inner surface of the door and having
- a mounting side being adapted to mount on the inner surface of the door;
- a forming side;
- a central threaded hole formed through the mounting beam and screwed with the outer thread of the central tube of the base;
- multiple side threaded holes formed through the mounting beam beside the central threaded hole and screwed with the first fasteners of the base;
- multiple mounting holes formed through the mounting beam beside the side threaded holes;
- and
- multiple second fasteners mounted in the mounting holes of the mounting beam to connect with the door of the lock assembly;
- two extending beams formed on and protruding from the forming side of the mounting beam, parallel to each other and each extending beam having
- a middle;
- and
- a free end;
- a middle beam formed on the middles of the extending beams parallel to the mounting beam and having
- two sides;
- a mounting recess formed in one of the sides of the middle beam and facing to the central threaded hole of the mounting beam;
- and
- a pivotal hole formed through the other side of the middle beam and communicating with the mounting recess,
- a connecting beam formed on the free ends of the extending beams parallel the middle beam and having a rod hole formed through the connecting beam and aligning with the pivotal hole of the middle beam;
- a first mounting space formed between the mounting beam, the middle beam and the extending beams;
- and
- a second mounting space formed between the middle beam, the connecting beam and the extending beams;
- a first selecting device rotatably connected to the base and having
- a driving sleeve rotatably extending through the central tube of the base and having
- an outer end extending out of the mounting panel of the base,
- an inner end extending out of the central tube of the base in the first mounting space of the disk holder;
- an external surface;
- a mounting protrusion formed on the inner end of the driving sleeve and pivotally mounted in the mounting recess of the middle beam of the disk holder;
- and
- a tube thread formed on the external surface of the driving sleeve near the mounting protrusion and mounted in the first mounting space of the disk holder;
- and
- a first selecting disk rotatably mounted on the mounting panel of the base and connected securely to the driving sleeve,
- a second selecting device rotatably connected to the first selecting device and the disk holder and having
- a driving rod rotatably extending through the driving sleeve of the first selecting device and having
- an outer end extending out of the outer end of the driving sleeve of the first selecting device;
- an inner end extending out of the inner end of the driving sleeve in the second mounting space of the disk holder;
- an external surface;
- a mounting protrusion formed on the inner end of the driving rod and pivotally mounted in the rod hole of the connecting beam of the disk holder;
- a tube thread formed on the external surface of the driving rod near the mounting protrusion and mounted in the second mounting space of the disk holder;
- a connecting hole axially formed in the mounting protrusion of the driving rod;
- and
- a third fastener mounted in the connecting hole to hold the driving rod with the disk holder;
- and
- a second selecting disk rotatably mounted on the outer side of the first selecting disk and connected securely to the driving rod;
- a first disk set mounted on the driving sleeve of the first selecting device in the first mounting space of the disk holder and having
- first driving disk securely mounted on the inner end of the driving sleeve and having
- a periphery;
- an inner side;
- a gap formed on the periphery of the first driving disk;
- a connecting tube formed on and protruding from the inner side of the first driving disk, mounted around the inner end of the driving sleeve of the first selecting device and having an external surface;
- and
- an attaching threaded hole formed through the connecting tube and the first driving disk and screwed with the tube thread of the driving sleeve of the first selecting device;
- and
- at least one first driven disk rotatably mounted around the connecting tube of the first driving disk and driven by the first driving disk and each of the at least one first driven disk having
- a periphery;
- two sides;
- and
- a gap formed on the periphery of the at least one first driven disk;
- and
- a second disk set mounted on the driving rod of the second selecting device in the second mounting space of the disk holder and having
- a second driving disk securely mounted on the inner end of the driving rod and having
- a periphery;
- an inner side;
- a gap formed on the periphery of the second driving disk;
- a connecting tube formed on and protruding from the inner side of the second driving disk, mounted around the inner end of the driving rod of the second selecting device and having an external surface;
- and
- an attaching threaded hole formed through the connecting tube and the second driving disk and screwed with the tube thread of the driving rod of the second selecting device;
- and
- a second driven disk rotatably mounted around the connecting tube of the second driving disk and driven by the second driving disk and having
- a periphery;
- two sides;
- and
- a gap formed on the periphery of the second driven disk.
82 more elements
Dependencies are inferred from the claim text.