Abstract: This application provides flow channel structure. The flow channel structure includes a substrate body, the substrate body comprises fluid channels and heat insulated cavities. Wherein, the fluid channels are configured for facilitating a flow of heat conduction medium; the fluid channels are arranged at intervals, and a heat insulated cavity of the heat insulated cavities is defined between two adjacent fluid channels of the fluid channels; the heat insulated cavities receives the heat insulation medium, thereby preventing heat exchange of the heat conduction mediums in the two adjacent fluid channels.

Abstract: A heat dissipation device is provided for a server. The heat dissipation device comprises a plurality of first heat-conducting members, a plurality of second heat-conducting members and two liquid cooling members. Each of the plurality of second heat-conducting members is elastic deformable along the first direction, so that each of the slots squeezes a corresponding memory storage and the plurality of second heat-conducting members is closely in contact with the corresponding memory storage.

Abstract: A heating dissipation device, comprising a medium transmission member, a plurality of heat exchange units and a plurality of heat exchange members. The medium transmission member comprising a transmission cavity for conveying a heat exchange medium. The plurality of heat exchange units are spaced apart from each other and connected to the medium transmission member, two adjacent heat exchange units are defined a receiving space therebetween, the receiving space receives a corresponding heat source member therein, the heat exchange units has a heat exchange cavity. Each of the plurality of heat exchange members is respectively arranged in a corresponding each of the plurality of heat exchange cavities, the heat exchange unit absorbs heat generated from the heat source member, then the heat is transferred to the transmission member via the heat exchange member. Each of the plurality of heat exchange units has a first state and a second state.

Abstract: An electronic device includes a lens body, a rotatable portion, a base, and a main body. The lens body contains a lens module. The rotatable portion is secured to the lens body, and defines a number of grooves on the circumference surface thereof. The base defines a through hole with the rotatable portion received therein. An elastic sheet is disposed at a lateral side of the through hole and has a protrusion projecting into the through hole for engaging with the grooves of the rotatable portion. The main body is secured with the base.

Abstract: A knob module is set on a circuit board of an electric device and comprises: a pedestal fixed on the circuit board with a plurality of interference parts and a pivotally connecting part; a rotative body with a plurality of pivotally connecting bodies corresponding to the pivotally connecting part and a plurality of interference bodies corresponding to the interference part, the rotative body is connected to the pedestal by pivotally connecting the pivotally connecting bodies with the pivotally connecting part, the interference bodies are interfered with the interference part, respectively; and, an elastically contacting piece is fixed on the rotative body, a first contacting part and a second contacting part of the elastically contacting piece are situated on the outer and inner circle of the pivot rod, the first contacting part and a second contacting part are electrically connected to corresponding places of the circuit board.

Abstract: A knob module is set on a circuit board of an electric device and comprises: a pedestal fixed on the circuit board with a plurality of interference parts and a pivotally connecting part; a rotative body with a plurality of pivotally connecting bodies corresponding to the pivotally connecting part and a plurality of interference bodies corresponding to the interference part, the rotative body is connected to the pedestal by pivotally connecting the pivotally connecting bodies with the pivotally connecting part, the interference bodies are interfered with the interference part, respectively; and, an elastically contacting piece is fixed on the rotative body, a first contacting part and a second contacting part of the elastically contacting piece are situated on the outer and inner circle of the pivot rod, the first contacting part and a second contacting part are electrically connected to corresponding places of the circuit board.