Anti-theft lock for portable electronic device

1. An anti-theft lock for a portable electronic device comprising:

a base having

an inner space;

a mounting groove concaved from a surface of the base toward the inner space; and

a moving channel; an end of the moving channel communicating with the inner space, and another end of the moving channel communicating with a bottom of the mounting groove;

a mounting shaft; two ends of the mounting shaft respectively mounted on two opposite side walls of the mounting groove;

two buckling units; the buckling units and the mounting shaft being individual to each other; each of the buckling units having

an inner end moveably mounted around the mounting shaft;

an outer end located outside the mounting groove;

a back surface located opposite to the other buckling unit;

a first point formed on the back surface; and

a second point formed on the back surface; the second point being closer to the outer end than the first point; a distance between the second points of the two buckling units being larger than a distance between the first points of the two buckling units;

a buckling resetting assembly connected to the two buckling units and configured to move the two buckling units toward each other;

a split-abutting unit moveably mounted in the moving channel and having

an engaging end located in the inner space; and

a split-abutting end being opposite to the engaging end, located in the mounting groove, and selectively abutting the two buckling units via the movement of the split-abutting unit;

a controlling unit pivotally mounted in the inner space of the base and having

an annular curved surface surrounding a rotating axis of the controlling unit and slidably abutting the engaging end of the split-abutting unit; during the rotation of the controlling unit, the annular curved surface being capable of pushing the split-abutting unit toward the outer ends of the two buckling units to make the split-abutting end of the split-abutting unit abut the two buckling units with inclined surfaces, and to move the two buckling units away from each other on the mounting shaft by the split-abutting unit pushing the two buckling units; wherein the larger a distance the split-abutting unit moves toward the outer ends of the two buckling units, the larger a distance the two buckling units move away from each other; the annular curved surface having

an unlocking point; wherein when the controlling unit is pivoted to abut the engaging end of the split-abutting unit with the unlocking point, the annular curved surface does not push the split-abutting unit toward the outer ends of the two buckling units; and

multiple locking points; the controlling unit abutting the split-abutting unit by the unlocking point or one of the locking points; wherein distances for which the annular curved surface pushes the split-abutting unit toward the outer ends of the two buckling units via each of the locking points are different;

a split-abutting resetting unit connected to the split-abutting unit and configured to make the split-abutting unit abut the annular curved surface of the controlling unit; and

a lock cylinder mounted on the base and having

a driving shaft extending into the inner space and being capable of driving the controlling unit to pivot;

wherein

each of the two buckling units is pivotally mounted around the mounting shaft and has

a pivot-abutting inclined surface; and

the split-abutting unit has

two pivot-pushing segments; wherein when the split-abutting unit moves toward the outer ends of the two buckling units, the two pivot-pushing segments are capable of respectively abutting the pivot-abutting inclined surfaces of the two buckling units and sliding relative to the pivot-abutting inclined surfaces to push the two buckling units to pivot with the mounting shaft as a rotating axis.

2. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein

each of the buckling units further has

a first buckling segment formed on the outer end and extending toward a direction away from the pivot-abutting inclined surface.

3. The anti-theft lock for a portable electronic device as claimed in claim 2 , wherein

the split-abutting unit further has

a second buckling segment formed on the split-abutting end and extending toward a direction opposite to the direction in which the first buckling segment extends; wherein when the split-abutting unit moves to the second buckling segment protruding out of the mounting groove, the two pivot-pushing segments respectively push the pivot-abutting inclined surfaces of the two buckling units.

4. The anti-theft lock for a portable electronic device as claimed in claim 3 , wherein

each of the two buckling units has

a split-abutting inclined surface formed on a side surface of said buckling unit, wherein the side surface faces the other buckling unit; when the split-abutting unit moves toward the outer ends of the two buckling units, the split-abutting unit is located between and abuts the split-abutting inclined surfaces of the two buckling units and slides relative to the split-abutting inclined surfaces of the two buckling units to push the two buckling units; the split-abutting inclined surfaces of the two buckling units gradually moving toward each other in a direction toward the outer ends of the two buckling units, such that the larger the distance the split-abutting unit moves toward the outer ends of the two buckling units, the larger the distance the two buckling units move away from each other.

5. The anti-theft lock for a portable electronic device as claimed in claim 4 , wherein

the split-abutting unit has

two push-abutting inclined surfaces respectively formed on two opposite sides of the split-abutting end; wherein when the split-abutting unit moves toward the outer ends of the two buckling units, the split-abutting unit abuts the split-abutting inclined surfaces of the two buckling units respectively with the two push-abutting inclined surfaces and slides relative to the split-abutting inclined surfaces of the two buckling units to push the two buckling units; the two push-abutting inclined surfaces gradually move toward each other in the direction toward the outer ends of the two buckling units, such that the larger the distance the split-abutting unit moves toward the outer ends of the two buckling units, the larger the distance the two buckling units move away from each other.

6. The anti-theft lock for a portable electronic device as claimed in claim 5 , wherein

the buckling resetting assembly has

two buckling elastic units respectively connected to the two buckling units and respectively connected to the two opposite side walls of the mounting groove; each of the buckling elastic units located between and abutting the corresponding buckling unit and the corresponding side wall; the two buckling elastic units configured to push the two buckling units toward each other.

7. The anti-theft lock for a portable electronic device as claimed in claim 6 , wherein

the split-abutting resetting unit

a split-abutting elastic unit located between and abutting the split-abutting unit and the base, and configured to push the split-abutting unit toward the controlling unit.

8. The anti-theft lock for a portable electronic device as claimed in claim 7 , wherein the anti-theft lock further has a rope mounted on the base.

9. The anti-theft lock for a portable electronic device as claimed in claim 8 , wherein the engaging end of the split-abutting unit has an arced surface.

10. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein

each of the two buckling units has

a split-abutting inclined surface formed on a side surface of said buckling unit, wherein the side surface faces the other buckling unit; when the split-abutting unit moves toward the outer ends of the two buckling units, the split-abutting unit is located between and abuts the split-abutting inclined surfaces of the two buckling units and slides relative to the split-abutting inclined surfaces of the two buckling units to push the two buckling units; the split-abutting inclined surfaces of the two buckling units gradually moving toward each other in a direction toward the outer ends of the two buckling units, such that the larger the distance the split-abutting unit moves toward the outer ends of the two buckling units, the larger the distance the two buckling units move away from each other.

11. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein

the split-abutting unit has

two push-abutting inclined surfaces respectively formed on two opposite sides of the split-abutting end; wherein when the split-abutting unit moves toward the outer ends of the two buckling units, the split-abutting unit abuts the two buckling units respectively with the two push-abutting inclined surfaces and slides relative to the two buckling units to push the two buckling units; the two push-abutting inclined surfaces gradually move toward each other in a direction toward the outer ends of the two buckling units, such that the larger the distance the split-abutting unit moves toward the outer ends of the two buckling units, the larger the distance the two buckling units move away from each other.

12. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein

the buckling resetting assembly has

two buckling elastic units respectively connected to the two buckling units and respectively connected to the two opposite side walls of the mounting groove; each of the buckling elastic units located between and abutting the corresponding buckling unit and the corresponding side wall; the two buckling elastic units configured to push the two buckling units toward each other.

13. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein

the split-abutting resetting unit

a split-abutting elastic unit abutting between the split-abutting unit and the base, and configured to push the split-abutting unit toward the controlling unit.

14. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein the anti-theft lock further has a rope mounted on the base.

15. The anti-theft lock for a portable electronic device as claimed in claim 1 , wherein the engaging end of the split-abutting unit has an arced surface.