Electronic device, expansion structure for electronic card and assembly method thereof

An electronic device, for installing an electronic card, the electronic device comprising:

• a circuit board, provided with a connector slot;
• and
• an expansion structure, comprising a carrier board and a fixing element;
• wherein, the electronic card is disposed at the carrier board and is fixed by the fixing element, a sidewall is formed on a side of the carrier board, a blocking piece is extended inward from the sidewall, the blocking piece and the sidewall jointly define a sliding channel to cover the side of the electronic card along a sliding direction, the electronic card has an insertion end and a fixing end opposite to each other along the sliding direction, the electronic card is fixed by the fixing element at the fixing end, and the expansion structure is disposed at the circuit board and connects the insertion end and the connector slot with each other;
• wherein in the expansion structure, the sidewall and the blocking piece are located closer to the fixing end than the insertion end along the sliding direction.

An assembly method for assembling an expansion structure for an electronic device, comprising:

• providing an electronic device, a carrier board, a fixing element and an electronic card;
• wherein the electronic device is provided with a circuit board, the circuit board is provided with a connector slot, a sidewall is formed on a side of the carrier board, a blocking piece is extended from the sidewall, the carrier board, the sidewall and the blocking piece jointly define a sliding channel along a sliding direction, and the electronic card has an insertion end and a fixing end opposite to each other along the sliding direction;
• inserting the fixing end of the electronic card into the sliding channel along the sliding direction to install the electronic card at the carrier board;
• fixing the fixing end of the electronic card on the carrier board by the fixing element to form an expansion structure;
• and
• connecting the insertion end and the connector slot with each other to fix the expansion structure on the circuit board,
• wherein in the expansion structure, the sidewall and the blocking piece are located closer to the fixing end than the insertion end along the sliding direction.