Trigger switch

1. A trigger switch set on a bezel of an electrical device to trigger a trigger element of the electrical device, comprising: a pressing element slidably attached to the bezel, and comprising a trigger portion;

a first locating element configured to restrict the pressing element to a first position to prevent the trigger portion from contacting the trigger element;

an elastic second locating element configured to restrict the pressing element to a second position to further prevent the trigger portion from contacting the trigger element;

wherein the trigger portion contacts and applies a force to the trigger element to trigger the trigger element when the pressing element overcomes elastic forces of the second locating element.

2. The trigger switch of claim 1 , wherein the pressing element further comprises a pressing portion having a first end and second end, and comprising two attracting portions extending perpendicularly from opposite sides of the second end of the pressing portion; the trigger portion extends from the second end of the pressing portion; when the pressing element is positioned at the first position, the attracting portions are engaged with the first locating element.

3. The trigger switch of claim 2 , wherein the first locating element comprises two magnets positioned on an inner surface of the bezel; the attracting portions are capable of being attracted by the magnets to engage with the magnets.

4. The trigger switch of claim 3 , wherein the second locating element comprises two L-shaped elastic members, a first end of each member is fixed to the inner surface of the bezel and a second end of each member is positioned between the attracting portions and the trigger element.

5. The trigger switch of claim 3 , wherein the second locating element comprises two springs positioned on the circuit board and located opposite the trigger element to limit movement of the pressing element.

6. The trigger switch of claim 2 , wherein the first end of the pressing portion protrudes out of the bezel, opposite to the trigger element, to be operated.

7. An electronic device, comprising:

a bezel defining a through hole, and having an inner side and an outer side;

a circuit board opposite to the bezel and facing the inner side of the bezel;

a trigger element electrically mounted to the circuit board;

a pressing element having a first end and a second end, wherein the second end is facing the trigger element; the first end is passing through the through hole of the bezel to protrude out of the outer side of the bezel; the pressing element is capable of sliding along the through hole;

a first locating element configured to restrict the pressing element to a first position to prevent the second end of the pressing element from contacting the trigger element;

an elastic second locating element configured to restrict the pressing element to a second position to further prevent the second end of the pressing element from contacting the trigger element;

wherein the second end of the pressing element contacts and applies a force to the trigger element to trigger the trigger element when the pressing element overcomes elastic forces of the second locating element.

8. The electrical device of claim 7 , wherein the pressing element further comprises a pressing portion having a first end and a second end, and comprising two attracting portions extending perpendicularly from opposite sides of the second end of the pressing portion; and a trigger portion extends from the second end of the pressing portion; when the pressing element is positioned at the first position, the attracting portions are engaged with the first locating element.

9. The electrical device of claim 8 , wherein the first locating element comprises two magnets positioned on the inner side of the bezel; the attracting portions are capable of being attracted by the magnets to engage with the magnets.

10. The electrical device of claim 9 , wherein the second locating element comprises two L-shaped elastic members, a first end of each member is fixed to the inner side of the bezel and a second end of each member is positioned between the attracting portions and the trigger element.

11. The electrical device of claim 9 , wherein the second locating element comprises two springs positioned on the circuit board and located opposite the trigger element to limit movement of the pressing element.