Security lock for electronic device

1. A security apparatus for a portable device, comprising:

a lock head, having

a plurality of lock fingers extending out of the lock head and alterable between a first state and a second state, the plurality of lock fingers are in the first state when the lock head is secured to an interface of a portable device, and the plurality of lock fingers are in the second state when the lock head is readily removable from the interface of the portable device; and

a first engaging member; and

a lock body, having:

a first compartment for receiving the lock head via an opening of the first compartment;

a second engaging member proximate to the opening and complementary to the first engaging member, the second engaging member engages with the first engaging member to secure the lock head to the lock body when the plurality of lock fingers are in the first state; and

a second compartment for accommodating a locking mechanism operably coupled to the lock head, the state of the plurality of lock fingers being alterable via the locking mechanism,

wherein the lock head and the locking mechanism are axially spaced apart.

2. The security apparatus of claim 1 , wherein the plurality of lock fingers are in the second state when the first and second engaging member are disengaged and the lock head is readily removable from the lock body to be replaced by a different lock head.

3. The security apparatus of claim 1 , wherein the plurality of lock fingers shift in horizontal direction to increase friction with an inner wall of the interface.

4. The security apparatus of claim 1 ,

wherein the lock head has a first longitudinal axis extending from a distal end to an opposite proximal end of the lock head, and the locking mechanism has a second longitudinal axis extending from a distal end to an opposite proximal end of the locking mechanism,

wherein the first longitudinal axis is offset from the second longitudinal axis for a distance.

5. The security apparatus of claim 4 , wherein the first longitudinal axis and the second longitudinal axis are non-coaxial.

6. The security apparatus of claim 5 , wherein the first longitudinal axis and the second longitudinal axis are parallel to each other.

7. The security apparatus of claim 4 , wherein the lock body includes a bottom, and the second longitudinal axis is ≤3 millimeters above the bottom.

8. The security apparatus of claim 1 , wherein the lock body includes a bottom, and the plurality of lock fingers are no more than 2.6 millimeters above the bottom.

9. The security apparatus of claim 1 , wherein the lock head further comprises a fixing element configured to prevent the lock head from being removed from the lock body when the plurality of lock fingers are in the second state.

10. The security apparatus of claim 1 , wherein the lock body further includes a stabilizing element adapted to alter the states of the plurality of lock fingers corresponding to the locking mechanism's operation.

11. The security apparatus of claim 10 , wherein the stabilizing element is slideable between a first position and a second position, and the stabilizing element is in the first position when the plurality of lock fingers are in the first state, and the first position is closer to the interface than the second position.

12. The security apparatus of claim 1 , wherein the locking mechanism further includes a switch adapted to hold the plurality of lock fingers in the first state and to release the plurality of lock fingers from the first state.

13. A security apparatus for a portable device, comprising:

a lock head, having

a plurality of lock fingers extending out of the lock head and alterable between a first state and a second state, the plurality of lock fingers are in the first state when the lock head is secured to an interface of a portable device, and the plurality of lock fingers are in the second state when the lock head is readily removable from the interface of the portable device; and

a first engaging member; and

a lock body, having:

a first compartment for receiving the lock head via an opening of the first compartment;

a second engaging member proximate to the opening and complementary to the first engaging member, the second engaging member engages with the first engaging member to secure the lock head to the lock body when the plurality of lock fingers are in the first state; and

a second compartment for accommodating a locking mechanism operably coupled to the lock head, the state of the plurality of lock fingers being alterable via the locking mechanism,

wherein the lock head and the locking mechanism are on different planes.

14. The security apparatus of claim 13 , wherein the different planes are parallel with each other.

15. The security apparatus of claim 13 , wherein the different planes intersect with each other at an angle of 0-90 degrees.

16. The security apparatus of claim 13 , wherein the lock head sits on a first plane which passes through a central longitudinal axis of the lock head, and the locking mechanism sits on a second plane which passes through a central longitudinal axis of the locking mechanism, and the first plane and the second plane are spaced apart.

17. The security apparatus of claim 16 , wherein the first and second planes are horizontal planes.

18. The security apparatus of claim 17 , wherein the lock body includes a bottom, and the second horizontal plane is ≤3 millimeters above the bottom.

19. The security apparatus of claim 13 , wherein the lock head is pre-installed and not readily removable from the lock body.