Please refer to
The input interface 140 such as a keyboard of a mobile telephone or an external connected keyboard of a PDA is provided on the body 110 for inputting an access password. The control unit 150 is electrically connected to input interface 140 and electronic switch 130 respectively, and the control unit 150 is provided in the body 110 for receiving an access password and obtaining the default password. When the access password matches the default password, the control unit 150 controls the electronic switch 130 to release the cover 120. When the access password does not match the default password for a default number of times, the electronic switch 130 will be locked preferably by the control unit 150, and cannot be opened by inputting the access password so that the memory card can be secured. Moreover, the electronic device 100 further includes a display module 160 such as a liquid crystal or light emitting diode display screen for displaying the inputted password so that users can input and modify the password easily.
As shown in
The locking module 132 further includes a protrusion 132b and a pin 132c connecting with the protrusion 132b. The second end of the locking module 132 lies on the pin 132c, while the first end of the locking module 132 lies on another side of the protrusion 132b relatively to the pin 132c. In this embodiment, an elastic element 133 is preferably inserted by the pin 132c, and the baffle 135 is fixed on the body 110. The pin 132c is inserted into the baffle 135, and can be moved relatively to the baffle 135. The elastic element 133, such as a spring, lies between the baffle 135 and the protrusion 132b.
In this embodiment, the first joint part 122 has a recess and the second joint part 132a has a convex part, so that the first joint part 122 can interfere with the second joint part 132a. Wherein, the convex part can preferably be a fillet. Therefore, when the cover 120 is pressed down and contacts with the fillet, the cover 120 exerts a lateral component force on the second joint part 132a, which makes the protrusion 132b draw back, and the elastic element 133 is against the cover 135 and generates an corresponding elastic stress. When the convex part of the second joint part 132a reaches the recess of the first joint part 122, the elastic stress produced by elastic module 133 pushes the convex part into the recess to fix the cover 120 with the body 110. There is no limitation thereon, as a further embodiment, the first joint part 122 can have a convex part, while the second joint part 134a has a recess.
Please refer to
The electronic device disclosed by the above embodiment of this invention utilizes an electronic switch with the password-input method and cooperate with a proper protection mechanism to protect the memory card. Since the action force is an electromagnetic force, the password must be inputted in power-on state to active the protect device so that the security of the memory card is assured.
Although the invention has been described in considerable detail with reference to certain preferred embodiments thereof, the disclosure is not for limiting the scope of the invention. Persons having ordinary skill in the art may make various modifications and changes without departing from the scope and spirit of the invention. Therefore, the scope of the appended claims should not be limited to the description of the preferred embodiments described above.
Number | Date | Country | Kind |
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95134622 | Sep 2006 | TW | national |