| 摘要 |
The present invention relates to a protective case for preventing damages to a mobile terminal, wherein the protective case comprises: an actuator (12) including a substrate (18), a piezoelectric element layer (20) of a ceramic material which is attached to at least one side of the substrate (18), at least one weight (22) which is attached to and fixated to the piezoelectric element layer (20) to increase vibration force, and a bracket (24) which is formed to attach and fixate both ends of the substrate (18); an auxiliary battery (10) used for supplying power to the actuator (12) and charging a mobile terminal (4) when a battery of the mobile terminal (4) is discharged or consumed; and a Bluetooth receiving module (30) for receiving a signal transmitted from a Bluetooth transmitting module (28) of the mobile terminal (4). By installing the actuator (12) supplying real time vibration feedback to the inside of the protective case (2) for preventing damages to the mobile terminal (4), it is possible to provide a user with a haptic signal which is suitable to an image and sound outputted from the mobile terminal (4) in a form of a quick vibration response, whereby the user can feel everything happens at the same time. Also, by adjusting vibration amount of the actuator (12) according to the size of the vibration or controlling vibration feedback to be provided by cylinder-type vibration motor (14), various vibration patterns such as large vibration, minute vibration, and the like can be delivered, thereby giving a user realism. |
