Patent Application
20050061039
1. Field of the Invention
This invention relates to a padlock, particularly to one able to be assembled conveniently and quickly, having excellent effect of antitheft and greatly lowering producing cost. In using, only insert a key in the keyhole of a lock core and turn it around to rotate the rotary member of the lock core together with a stop block to let the engage groove of the stop block disengaged from the annular groove of a movable bolt and make a spring extended elastically. At this time, the movable bolt is no longer held by the engage groove of stop block so it can be drawn out of the movable bolt insert hole of an upper fundamental base. Then, a steel cable having one end secured in the upper fundamental base is wound around an article to be locked and the movable bolt is inserted through the movable bolt threading hole of an upper shell and positioned in the movable bolt insert hole of the upper fundamental base and the insert hole of a lower fundamental base. Simultaneously, the stop block is pulled and moved to its original position by the recovering resilience of the spring and has its engage groove engaged with the annular groove of the movable bolt to stably lock the movable bolt in a lock body, thus finishing locking of a padlock.
2. Description of the Prior Art
A conventional laminated lock 1, as shown in
However, the lock core body 10 of a conventional laminated lock 1 is made by piling together a number of steel plates 100 with different shaped insert and through holes, and then these steel plates 100 are riveted together, taking too much time and labor in assembly. Especially, if any one of the steel plates 100 is arranged mistakenly during assembling, the steel plates 100 have to be disassembled one by one and rearranged, resulting in much delay in assembly and increasing its producing cost.
The objective of the invention is to offer a padlock, convenient to be assembled, able to lower producing cost and having excellent effect of antitheft.
The feature of the invention is an upper fundamental base having a recessed chamber formed in the interior and a cut surface defining one side of the recessed chamber and having a movable-bolt insert hole, the upper fundamental base further bored with a stationary-bolt insert hole. A lower fundamental base to be combined with the upper fundamental base is provided with a cut surface with an insert hole on the inner side and has a lock core accommodating chamber in the center and a through hole communicating with the lock core accommodating chamber. A lock core received in the lock core-accommodating chamber of the lower fundamental base has one end provided with a rotary member and the other end bored with a keyhole. A stop block to be received in the recessed chamber of the upper fundamental base is provided with an insert hole in the center and an engage groove at the right end, with the lower end of a spring hooked with the right end of the stop block and the upper end of the spring hooked with the upper fundamental base. A stationary bolt to be inserted in the stationary-bolt insert hole of the upper fundamental base is formed with an annular groove and an axial insert hole. A movable bolt is to be inserted in the movable-bolt insert hole of the upper fundamental base and the insert hole of the lower fundamental base, having an annular groove and an axial insert hole. An upper shell to be covered on the exterior of the upper fundamental base is provided with a stationary-bolt threading hole and a movable-bolt threading hole. A lower shell to be covered on the interior of the lower fundamental base and combined with the upper shell is bored with a through hole in the center.
This invention will be better understood by referring to the accompanying drawing, wherein:
A preferred embodiment of a padlock in the present invention, as shown in
The upper fundamental base 2 is formed with a recessed chamber 20 in the interior and a cut surface 21 defining one side of the recessed chamber 20 and provided with a movable-bolt inserting hole 22 and a horizontal projecting stud 23. Further, the upper fundamental base 2 is provided with a stationary-bolt inserting hole 24 in a left portion, a pinhole 25 in the left sidewall for a fixing pin 26 to be inserted therein and two positioning studs 27 on the front side.
The lower fundamental base 3 to be combined with the upper fundamental base 2 has a cut surface 30 formed on its inner side and bored with a lengthwise insert hole 31 and also having a lengthwise lock core accommodating chamber 32 in the center. Further, the lower fundamental base 3 is bored with a through hole 33 communicating with the lock core accommodating chamber 32 and two stud holes 34 in the inner side.
The lock core 4 to be received in the lock core-accommodating chamber 32 of the lower fundamental base 3 has one end provided with a rotary member 40 and the other end formed with a keyhole 41.
The stop block 5 to be received in the recessed chamber 20 of the upper fundamental base 2 has its central part bored with an insert hole 50 and its right end provided with a horizontal projecting stud 51 and an engage groove 52, with one end of a spring 53 hooked with the projecting stud 51.
The stationary bolt 6 to be inserted and fixed in the stationary-bolt inserting hole 24 of the upper fundamental base 2 is formed with an annular groove 60 and an axial insert hole 61.
The movable bolt 7 is to be inserted in the movable-bolt inserting hole 22 of the upper fundamental base 2 and the insert hole 31 of the lower fundamental base 3, having an annular groove 70 and an axial insert hole 71.
The upper shell 8 to be covered on the exterior of the upper fundamental base 2 is bored with a stationary-bolt insert hole 80 and a movable-bolt insert hole 81.
The lower shell 9 to be covered on the exterior of the lower fundamental base 3 and combined with the upper shell 8 is bored with a through hole 90 in the center.
In assembling, as shown in
Next, the stop block 5 is received in the recessed chamber 20 and has its right end positioned on the cut surface 21 of the upper fundamental base 2, and the spring 53 has its lower end fitted on the projecting stud 51 of the stop block 5 and its upper end fitted on the projecting stud 23 of the upper fundamental base 2, letting the engage groove 52 of the stop block 5 aligned to the movable-bolt insert hole 22 of the upper fundamental base 2. Subsequently, the lock core 4 is fitted in the lock core accommodating chamber 32 of the lower fundamental base 3, and the upper fundamental base 2 and the lower fundamental base 3 are combined together, letting the positioning studs 27 of the upper fundamental base 2 inserted in the stud holes 34 of the lower fundamental base 3. Afterward, the rotary member 40 of the lock core 4 is inserted in the insert hole 50 of the stop block 5, and the upper shell 8 is covered on the exterior of the upper fundamental base 2 and the lower shell 9 is covered on the exterior of the lower fundamental base 3.
Lastly, the upper shell 8 and the lower shell 9 are combined and welded together and their exterior is enveloped with a wrapping material to complete a padlock body. Then, the movable bolt 7 is inserted through the movable-bolt threading hole 81 of the upper shell 8 and positioned in the movable-bolt insert hole 22 of the upper fundamental base 2 and the insert hole 31 of the lower fundamental base 3 to finish assembly of the padlock.
In using, as shown in
When the movable bolt 7 passes through the movable-bolt insert hole 22 of the upper fundamental base 2 to be inserted in the insert hole 31 of the lower fundamental base 3, its end will push the stop block 5 downward to let the end of the stop block 5 turned and disengaged from the movable-bolt insert hole 22 of the upper fundamental base 2 and the spring will be elastically pulled and extended. After the movable bolt 7 has its end inserted and positioned in the insert hole 31 of the lower fundamental base 3, the annular groove 70 of the movable bolt 7 is positioned in the engage groove 52 of the stop block 5 and the end of the stop block 5 is no longer pushed by the end of the movable bolt 7. Therefore, the stop block 5 is pulled and moved to its original position by the recovering resilience of the spring 53 and its engage groove 52 is fixedly engaged with the annular groove 70 of the movable bolt 7, letting the movable bolt 7 locked stably in the lock body to finish locking of the padlock.
To unlock the padlock, as shown in
As can be noted from the above description, this invention has the following advantages.
While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
