Patent Application
20080022737
The drawings included herein provide a further understanding of the invention. A brief introduction of the drawings is as follows:
Reference is made to
The housing 1 has a first shell body 11 and a second shell body 12 that are jointed together. On the front side of the first shell body 11, there is a through hole 110 and a plurality of windows 111. On the side of the first shell body 11, there are a plurality of openings 112. The second shell body 12 has another through hole 120. The housing 1 is connected with a sleeve 13 that is hollow. The sleeve 13 is connected with the second shell body 12 and corresponds to the two through holes 110 and 120. The housing 1 further is connected with a back board 14. The back board 14 has a through hole 140. The through hole 140 corresponds to the sleeve 13 and the back board 14 is screwed on the second shell body 12 of the housing 1.
The key locking mechanism 2 is sleeved on the sleeve 13 of the housing 1 and corresponds to the through hole 110 of the first shell body 11 of the housing 1. The key locking mechanism 2 includes a turning head 21, an inner shell 22 sleeved in the turning head 21, a lock core front sleeve 23 having a key hole 230 and plugged into the inner shell 22, a lock core 24 having another key hole 240 and connected with the lock core front sleeve 23, a first lock core sleeve 25 sleeved on the lock core 24, and a second lock core sleeve 26 sleeved on the lock core 24 and being adjacent to the first lock core sleeve 25, which are sleeved to each other. The key locking mechanism 2 has a function that is the same as the general key lock. The lock core 24 has a jointing part 241 that has a rectangular shape. The first lock core sleeve 25 has a rectangular jointing hole 250. The jointing hole 250 is sleeved on the jointing part 241 to joint the first lock core sleeve 25 with the lock core 24. The first lock core sleeve 25 has a first arc edge 251 and a first plane part 252 that are located at the same rotating path. The second lock core sleeve 26 also has a second arc edge 261 and a second plane part 262 that are located at the same rotating path. After the key locking mechanism 2 is assembled, the turning head 21 protrudes out of the housing via the through hole 110 and is turned by the user's hand.
The pushing assembly 3 is movably located in the housing 1 and has a first pushing member 31 and a second pushing member 32. On end of the first pushing member 31, there is a first contacting part 310. The first contacting part 310 has a first positioning surface 311 and a first contacting surface 312 that has a similar arc shape. From another end of the first pushing member 31, a plurality of first supporting parts 313 extend to two sides of the first pushing member 311. Each of the first supporting parts 313 has an arc surface 314 that has a semi-arc shape, and a semi-circular jointing arm 315 extended from a proper location of the arc surface 314. One end of the second pushing member 32 has a second contacting part 320. The second contacting part 320 has a second positioning surface 321 and a second contacting surface 322 that has a similar arc shape. From another end of the second pushing member 32, a plurality of semi-arc shaped second supporting parts 323 extend forward. On the second pushing member 32, there is a sliding slot 324 passing through the second pushing member 32. The sliding slot 324 is located between the second supporting parts 323.
Each of the figure-detecting members 4 has a sleeve member 41 and a first rotating member 42. The sleeve member 41 has a circular column shape and has a concave-ring part 410, a wedged part 411 and a cutting slot 412. The first rotating member 42 is a bevel gear and has a circular column shape. Each of the first rotating members 42 has a concave jointing part 420 and a blind hole 421. The wedged parts of the sleeve members 41 are individually movably located in the blind holes 421 of the first rotating member 42. There is a flexible member 43 between the sleeve members 41 and the first rotating members 42. The flexible member 43 is a compressed spring.
The figure locking mechanism 5 has a plurality of figure wheels 51, a front pressing board 52, and a rear pressing board 53. One end of each of the figure wheels 51 has a second rotating member 510. The second rotating member 510 is a bevel gear. The front pressing board 52 has a similar rectangular shape, and has a concave part 520 located at the rear side (as shown in
The first contacting surface 312 or the first positioning surface 311 of the first contacting part 310 of the first pushing member 31 is movably contacted and connected with the first arc edge 251 or the first plane part 252 of the first lock core sleeve 25. The second contacting surface 322 or the second positioning surface 321 of the second contacting part 320 of the second pushing member 31 is movably contacted and connected with the second arc edge 260 or the second plane part 261 of the second lock core sleeve 26. The concave-ring parts 410 of the sleeve members 41 of the figure-detecting members 4 are individually contacted and connected with the jointing arms 315 of the first supporting part 313 and correspond to the arc surfaces 314. The concave-jointing parts 420 of the first rotating members 42 of the figure-detecting members 4 are individually contacted and connected with the second supporting parts 323.
The second rotating members 510 of the figure wheels 51 are individually plugged into the openings 521 of the front pressing board 52, and the front pressing board 52 is screwed in the first shell body 11 of the housing 1. Therefore, another end of the figure wheels 51 is contacted and connected with the window 111 of the first shell body 11 of the housing 1 and exposed to the outside of the openings 11, and is operated by the user. The rear pressing board 53 pushes and presses the first pushing member 31 to position the first pushing member 31 between the front pressing board 52 and the rear pressing board 53 and make the cutting slot 412 of the figure-detecting member 4 correspond to the concave part 520 of the front pressing board 52 (as shown in
The rear side of the lock core 24 of the key locking mechanism 2 extends to outside of the sleeve 13 and has a locking tongue flake 27.
Reference is made to
When the user does not use the key, the user presses and rotates the turning head 21 of the key locking mechanism 2 to drive the lock core 24 (at this moment, the locking tongue flake 27 is not driven to unlock the lock). The lock core 24 drives the first lock core sleeve 25 and the second lock core sleeve 26 to rotate from a twelve-clock direction to a nine-clock direction. The first contacting surface 312 of the first contacting part 310 of the first pushing member 31 originally contacts the first arc edge 251 of the first lock core sleeve 25. It is a rising status. The second contacting surface 322 of the second contacting part 320 of the second pushing member 32 also originally contacts the second arc edge 260 of the second lock core sleeve 26. It also is a rising status. By rotating the first lock core sleeve 25 and the second lock core sleeve 26, the first positioning surface 311 of the first contacting part 310 of the first pushing member 31 contacts the first plane part 252 of the first lock core sleeve 25. The second positioning surface 321 of the second contacting part 320 of the second pushing member 32 contacts the second plane part 261 of the second lock core sleeve 26. Both the first pushing member 31 and the second pushing member 32 change to be in a falling status. At this moment, the second supporting part 323 of the second pushing member 32 drives the first rotating, member 42 to make the first rotating member 42 be interlinked with-the second rotating member 510.
When the user rotates the figure wheels 51 to the exact figures, the sleeve member 41 and the flexible member 43 of the figure-detecting member 4 movably push the first pushing member 31 so as to make the first positioning surface. 311 of the first contacting part 310 of the first pushing member 31 contact the first plane part 252 of the first lock core sleeve 25. Therefore, the first pushing member 31 moves upward at a distance to escape from the first plane part 252 of the first lock core sleeve 25. Thereby, when the user rotates the turning head 21 again, the turning head drives the lock core front sleeve 23 and lock core 24 to drive the locking tongue flake 27. The lock is then unlocked.
The present invention interlaces the first rotating axis A and the second rotating axis B of the first rotating members 42 and the second rotating members 510 to prevent the figure wheels from being axially disposed in serial. Therefore, the problem of figure wheels not working well due to the figure wheels being axially disposed in serial is solved. The lock can be unlocked by an exact key or an exact figure.
The description above only illustrates specific embodiments and examples of the invention. The invention should therefore cover various modifications and variations made to the herein-described structure and operations of the invention, provided they fall within the scope of the invention as defmed in the following appended claims.
