Patent Application
20090013738
1. Site of the Invention
The present invention relates to a key lock structure, and in particular to a key lock structure arranged in a mechanical number lock device for lowering risks of being stolen.
2. Background of the Invention
Most market-sale mechanical key locks are of a function that locks part of keyboard keys depending on the number settings selected.
Without knowing lock numbers, the non-destruction manner for unlocking the mechanical key locks is repeat trying the different numbers while keep forcing a lock tongue in a predetermined direction.
Finding out the correct numbers in conventional mechanical key locks is troublesome, but still is effortless if keeping try and error. Besides, there is no order setting, which may raise trying times and reduce risks of being stolen, in the mechanical key locks.
It is the object of the present invention to provide a key lock structure refusing any code pressing and inputting while locked, so as to avoid finding out the correct codes by try and error.
The present invention provides a key lock structure arranged in a mechanical key lock device including a casing, a sliding base disposed in the casing, an orientation frame arranged on a bottom face of the sliding base and a plurality of code-locked keystroke bodies. The sliding base has a plurality of elongation arms parallel to one another, a plurality of slots arranged with the elongation arms in a alternate manner, a plurality of stop portions disposed in the respective slots, and a tongue portion and a manual push portion together extended from front ends of the elongation arms. The tongue portion is extruded from a front portion of the casing. The manual portion is extruded from a top face of the casing. The code-locked keystroke bodies penetrate the respective slots and the orientation frame. Each of the code-locked keystroke bodies has a first slit and a sliding member. The sliding member has an extrusion portion exposed out the respective code-locked keystroke body via the respective first slit and further blocked by the respective stop portion.
The key lock structure indeed achieves the object of the present invention refusing any code pressing and inputting to avoid finding out the correct codes by try and error.
To provide a further understanding of the invention, the following detailed description illustrates embodiments and examples of the invention. Examples of the more important features of the invention have thus been summarized rather broadly in order that the detailed description thereof that follows may be better understood, and in order that the contributions to the art may be appreciated. There are, of course, additional features of the invention that will be described hereinafter which will form the subject of the claims appended hereto.
These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings, wherein:
With respect to
The casing 1 is made of high-strength metallic materials. The sliding base 2, the orientation frame 3, the code-locked keystroke bodies 4 and the arbitrary lock body 5 are arranged in the casing 1 for avoid damages. The casing 1 has a plurality of openings formed on a top face thereof for being penetrated by a manual push portion 23, the code-locked keystroke bodies 4 and the arbitrary lock body 5. A bottom face of the casing 1 can be disposed on a door or a door case.
The sling base 2 illustrated in
The orientation frame 3 is a rectangular metallic frame, and slides forwards and backwards on a bottom face of the sliding base 2. The orientation frame 3 encloses the slots 24 and 24′. The orientation frame 3 has a first ramp 31 formed on a corner thereof, and a plurality of arc slits 32 formed on two lateral edges thereof. The arc slits 32 correspond to the vertical slots 24 respectively. The arc slits 32 and the corresponding vertical slots 24 together form a pathway for the respective code-locked keystroke bodies 4 moving.
The code-locked keystroke bodies 4 penetrate the respective slots 24 and the orientation frame 3. The code-locked keystroke bodies 4 are even arrayed on the top face of the casing 1 for the user touching and pressing. Each of the code-locked keystroke bodies 4 has a first slit 41 formed on a lateral side and a sliding member 43 moving upwards and downwards therein. The sliding member 43 has an extrusion portion 431 exposed out the respective code-locked keystroke body 4 via the respective first slit 41. The extrusion portion 431 can move in the respective slot 24. When the key lock structure is enabled, the extrusion portion 431 is blocked by-the respective stop portion 25 in the respective slot 24, each code-locked keystroke body 4 cannot be pressed thereby.
Each code-locked keystroke body 4 illustrated in
Each code-locked keystroke body 4 has a second slit 42 formed on an opposite side thereof and a retaining member 45. The retaining member 45 is a spring made of plastic materials integrally in one piece. The retaining member 45 is exposed slantingly out of the respective code-locked keystroke body 4 via the second slit 42 for resisting against a lower portion of the orientation frame 3 or a lower portion of the sliding base 2.
By the combinations between the retaining member 45, the extrusion portion 431, the spheroid 434, and further the relative motion between the sliding base 2 and the orientation frame 3, the number setting, inputting and resetting are allowed.
The arbitrary lock body 5 is disposed on the orientation frame 3 and extrudes out of the top face of the casing 1. The arbitrary lock body 5 has a second ramp 51 mating with and corresponding to the first ramp 31. When the user press the arbitrary lock body 5, the second ramp 51 pushing the first ramp 31 to forcing the orientation frame 3 forwards.
Referring in
Under the code-locked keystroke bodies 4 and the arbitrary lock body 5, a plurality of springs (not shown) are arranged for supporting thereby. When part of the code-locked keystroke bodies 4 are pressed, the retaining member 45 moves downwardly thereby under the sliding base 2 to engage with the bottom face of the orientation frame 3. If the code-locked keystroke bodies 4 need to be back to the extrusion positions, the arbitrary lock body 5 can be pressed down to make the first ramp 31 mating with and forcing the second ramp 51. Thus, the orientation frame 3 moves forwards, the arc slits 32 of the orientation frame 3 correspond to the slots 24 of the sliding base 2 respectively, and a pathway is formed. The retaining member 45 can move in the pathway to lift the respective code-locked keystroke bodies 4, and the ode-locked keystroke bodies 4 bounce and recover to extrusion positions.
With respect to
The key lock structure according to the present invention also matches manual lock. Illustrating in
The stop portion 25 of the slide base 2 can barricade the extrusion portion 431 of the corresponding code-locked keystroke body 4. When the key lock structure according to the present invention is locked. No numerals can be input and no try-and-error manner can work.
Although the invention has been described in language specific to structural features and/or methodological steps, it is to be understood that the invention defined in the appended claims is not necessarily limited to the specific features or steps described. Rather, the specific features and steps are disclosed as preferred forms of implementing the claimed invention.
