Ejecting module for hard disk drives

An ejecting module is used in a server and includes a connector, a holder, a hard disk drive, a detecting circuit, a current output circuit, a first electromagnet and a second electromagnet. The hard disk drive is received in the holder. The detecting circuit detects whether the hard disk drive is electronically connected to the connector to output a control signal. The current output circuit receives the control signal and outputs a current. The first electromagnet is adjacent to the connector, and the second electromagnet faces the first electromagnet, the first electromagnet and the second electromagnet being electronically connected to the current output circuit. The current magnetizes the first electromagnet and the second electromagnet, a repulsion force is produced between the first electromagnet and the second electromagnet for moving the second electromagnet from the first electromagnet to be spaced from each other.

BACKGROUND

1. Technical Field

The disclosure generally relates to an ejecting module for separating hard disk drives from a printed circuit board.

2. Description of the Related Art

Servers have a plurality of hard disk drives placed in a cabinet. Each hard disk drive needs a holder to be carried in the server cabinet, and is electronically connected to a printed circuit board in the cabinet.

However, after a period of time, some of the hard disk drives might be damaged or problematic, and might not be electronically connected to the printed circuit board. A great deal of time is needed to find the problematic or damaged hard disk drives.

Therefore, there is room for improvement within the art.

DETAILED DESCRIPTION

FIGS. 1 to 2show an exemplary embodiment of a server100. The server100includes a printed circuit board10, a plurality of hard disk drives20, a plurality of holders30and a plurality of ejecting modules40. Each hard disk drive20is placed in a corresponding holder30. Each holder30is movably positioned in a housing (not shown) of the server100. The printed circuit board10includes a plurality of connectors11. When the hard disk drives20are respectively received in holders30, the holders30can be moved to allow the hard disk drives20on the holders30become electronically connected to the connectors11on the printed circuit board10. The ejecting modules40detect the connection between the hard disk drives20and the connectors11. If any of the hard disk drives20is not electronically connected to a corresponding connector11, the corresponding ejecting module40will separate the hard disk drive20with the holder30from a corresponding connector11.

Each ejecting module40includes a detecting circuit41, a current output circuit43, a first electromagnet45and a second electromagnet47. The detecting circuit41is located on the printed circuit board10, and is electronically connected to a corresponding connector11. The detecting circuit41can determine whether the hard disk drive20is electronically connected to the connector11. If the detecting circuit41detects the hard disk drive20not electronically connected to the connector11, the detecting circuit41will output a control signal. If the detecting circuit41detects the hard disk drive20at a normal state, the detecting circuit41has no response.

The current output circuit43is also located on the printed circuit board10and is electronically connected to the detecting circuit41, for receiving the control signal. If the detecting circuit41output the control signal, the current output circuit43will receive the control signal, and output a current. If the current output circuit43is not received the control signal, the current output circuit43will do nothing.

The first electromagnet45is located on the printed circuit board10, and is adjacent to the connector11. The second electromagnet47is located on the holder30, and contacts the first electromagnet45. The first electromagnet45and the second electromagnet47are electronically connected to the current output circuit43. When the current output circuit43outputs a current, the first electromagnet45and the second electromagnet47will be magnetized to respectively have S pole and N pole. Opposite ends of the first electromagnet45and the second electromagnet47have the same poles, and a repulsion force is produced between the first electromagnet45and the second electromagnet47. The repulsion force will move the second electromagnet47from the first electromagnet45to be spaced from each other. In this exemplary embodiment, the S pole of the first electromagnet45may face the S pole of the second electromagnet47. Referring toFIG. 3, the repulsion force between the first electromagnet45and the second electromagnet45will separate the hard disk drive20from the connector11, and move the holder30to extend from the server100. Thus, the damaged or problematic hard disk drive20is easily identified. The operation is very convenient.

FIG. 4shows a second exemplary embodiment of the ejecting module40. The ejecting module40includes two first electromagnets45and two second electromagnets47. The two first electromagnets45are positioned at two sides of the connector11. The second electromagnets47are positioned at two sides of the holder30. The first electromagnets45face the second electromagnets47. The repulsion force produced between the first electromagnets45and the second electromagnets47will move the second electromagnets47from the first electromagnets45to be spaced from each other. The second electromagnets47further move the holder30to extend from the server100. The two first electromagnets45and two second electromagnets47can effectively secure a balance point of the holder30, and will not tilt during movement.