Patent ID: 8188400

Claim:
A wireless dongle, comprising: a shell having a base board, a bottom surface of the base board defining a restraining cavity having a middle portion extending upward to form a receiving cavity and a switch section formed over the receiving cavity; a printed circuit board mounted in the shell and spaced from the base board of the shell, the printed circuit board defining a contact area facing toward the switch section of the shell; an elastic member made of elastic materials and mounted between the switch section of the shell and the contact area of the printed circuit board, the elastic member being further spaced from the contact area, wherein the elastic member can be elastically pressed to contact the contact area of the printed circuit board by means of pressing the switch section of the shell against the elastic member so as to trigger an electrical signal; and a restraining member having a base plate buckled in the restraining cavity, a middle portion of the base plate being punched upward to form an elastic portion with a receiving fillister opened in a bottom thereof, the elastic portion being received in the receiving cavity under the switch section, and the elastic member being received in the receiving fillister against an inside of the elastic portion; wherein a middle portion of the switch section protrudes into the receiving cavity to form an inserting post, a middle part of the elastic portion defines an inserting hole penetrating therethrough to communicate with the receiving fillister, and the inserting post is inserted in the inserting hole with a free end thereof abutting against a top of the elastic member.