| 摘要 |
An electronic device includes a circuit substrate, a bottom case, and a top case. The circuit substrate has a plurality of slits penetrating therethrough. The bottom case has a groove portion positioned at an inside surface of the bottom case such that edge portions of the circuit substrate are slidable and inserted into the groove portion. Besides, a plurality of pin-shaped protrusion portions is provided in the bottom case to be snib-fitted with the top case, and each protrusion portion has a plurality of locking portions at a tip end portion. Each protrusion portion elastically biases the circuit substrate toward the top side of the bottom case and presses the circuit substrate to a top surface of the groove portion by locking the locking portions to the circuit substrate after the locking portions are respectively inserted into the slits. |
