Retaining device for heat sink

An assembly comprising:

• an electronic device surrounded by a retention module;
• a heat sink positioned on said electronic device;
• and
• a heat sink retainer for retaining said heat sink to said electronic device, the heat sink retainer comprising:
• a clip including a pair of spaced pressing beams for biasing said heat sink toward said electronic device at opposite sides of the heat sink at least one latching beam being provided at one side of the pressing beams and engaging with the retention module at one side thereof, a crossbeam extending between the pressing beams at an opposite side thereof;
• a locking device for engaging with the retention module at an opposite side thereof;
• and
• a camming member pivotably attached to the locking device and including a cam being engageable with said crossbeam, the camming member being capable of moving relative to said locking device in a first plane between an unlocked position and a locked position;
• wherein
• when the camming member moves from said unlocked position to said locked position, the locking member is driven to move in the first plane to engage with the retention module and the pressing beams of the clip resiliently deflect in a second perpendicular to the first plane to press the heat sink toward the electronic device.

A retainer for retaining a heat sink to an electronic device, comprising:

• a wire clip having at least one pressing beam extending along said heat sink and placed thereon, a latching beam formed at one end of said at least one pressing beam and securely engagable beside said electronic device for retaining said heat sink to said electronic device, and a crossbeam formed at the other end of said at least one pressing beam;
• a locking device disposed next to said crossbeam and securely engagable beside said electronic device for said retaining;
• and
• an urging member attached to said locking device and used to urge said crossbeam of said wire clip linearly moving toward said electronic device relative to said locking device so as to result in resilient deformation of said at least one pressing beam against said heat sink for being forcedly retained to said electronic device.