Portable electronic device with an impact-protection function

1. A portable electronic device comprising:

a housing;

a gasbag module installed on the housing in an expansible manner; and

a pressure module connected to the gasbag module for conducting air outside the gasbag module into the gasbag module so as to expand the gasbag module.

2. The portable electronic device of claim 1 wherein the housing comprises:

a front casing; and

a back casing combined with the front casing.

3. The portable electronic device of claim 2 wherein the gasbag module comprises:

a first gasbag installed on the front casing; and

a second gasbag connected to the first gasbag and installed on the back casing.

4. The portable electronic device of claim 3 wherein the first gasbag and the second gasbag are disposed around the front casing and the back casing respectively.

5. The portable electronic device of claim 1 wherein the gasbag module is disposed around the housing.

6. The portable electronic device of claim 1 wherein a first chamber and a second chamber are formed inside the pressure module, the first chamber is for connecting the outside of the gasbag module, and the second chamber is for connecting the inside of the gasbag module.

7. The portable electronic device of claim 6 wherein the pressure module comprises:

a first valve disposed on a side of the first chamber for controlling inhalation of the air outside the gasbag module into the first chamber;

a second valve disposed between the first chamber and the second chamber for controlling inhalation of air inside the first chamber into the second chamber; and

a third valve disposed on a side of the second chamber for controlling exhaustion of the air inside the second chamber out of the gasbag module.

8. The portable electronic device of claim 7 wherein the pressure module further comprises a driving component disposed on a side of the first chamber for changing volume of the first chamber so as to drive the air inside the first chamber to the inside of the gasbag module via the second valve and the second chamber.

9. The portable electronic device of claim 8 wherein the air inside the first chamber pushes the second valve so as to flow into the inside of the gasbag module via the second chamber when the driving component is pressed.

10. The portable electronic device of claim 9 wherein the first valve is close for stopping the air outside the gasbag module from flowing into the first chamber when the driving component is pressed.

11. The portable electronic device of claim 10 wherein the first valve is open for allowing the air outside the gasbag module for flowing into the first chamber when the driving component recovers from a pressed condition.

12. The portable electronic device of claim 8 wherein the driving component is a button.

13. The portable electronic device of claim 8 wherein the driving component is a piston.

14. The portable electronic device of claim 7 wherein air inside the gasbag module flows outside the gasbag module via the second chamber when the third valve is pressed to open.

15. The portable electronic device of claim 1 wherein the gasbag module is made of silica gel material.