摘要:
A screw fastener, for fastening a workpiece to a fixed member, including a screw having a head having circumferential knurling and a stem having a first stem portion abutting the head and second stem portion abutting the first stem portion, the first stem portion having a smooth surface and the second stem portion having threads; a fixed member having a countersink bore section for accommodating the head and a threaded bore section for engagement with the second stem portion, the countersink bore section having a larger diameter than the threaded section; and a plastic washer having a hole that allows the washer to engage with the threaded section and an outer diameter larger than the diameter of the bore; the second stem portion passing sequentially through the workpiece to be fastened, the plastic washer, the countersink bore section and engage with the threaded bore section of the fixed member.
摘要:
A connector assembly includes a connector and two screws. The connector includes a main body, a cable connected to a rear side of the main body, and a connection portion protruding from a front side of the main body. Two threaded holes are defined in opposite ends of the main body, respectively. Two resilient fixing portions protrude from the rear side of the main body. A through hole is defined in each of the fixing portions. The screws are detachably received into the corresponding through holes of the fixing portions, and operable to mount the connector to an object by extending through the threaded holes to engage with the object.
摘要:
A heat dissipation assembly includes a heat sink, a mounting member fixed to the heat sink, a pivot member pivotably attached to the mounting member, and a latch member attached to the pivot member. The latch member includes a first latch portion and a second latch portion. The pivot member is pivoted to switch between using the first latch portion or the second latch portion to be fixed to different types of circuit boards.
摘要:
A computer includes a motherboard, a chassis to receive the motherboard, a peripheral component interconnect (PCI) card perpendicularly connected to the motherboard, a fan, and a fixing bracket. The chassis includes a fixing portion in parallel to the motherboard. The fixing bracket includes a base board defining an opening and a fixing element connected to the base board. The fan is mounted to the base board with a first side of the fan facing the opening, the base board is parallel to the PCI card, with a second side of the fan opposite to the first side facing the PCI card. Positions of the fasteners in the corresponding first slots are adjustable, to adjust a position that the fan is located on the base board. The assembly of the fan and the fixing bracket is used to improve cooling efficiency for the PCI card.
摘要:
A heated keyboard includes a number of input keys and a circuit board. A heating member is arranged in each of the number of input keys connected to voltage pin of the circuit board via a heating switch. When the heating switch is turned on, the heating member receives a voltage signal from the circuit board, thereby the heating member generates heat for warming user's hand.
摘要:
An infrastructure-based mobility determination module (MDM) receives multiple measurement reports from the MS and, for each received measurement report, stores values corresponding to values included in the report that are associated with measurements of parameters associated with received signals, wherein each stored value is stored in association with a wireless access node sourcing the corresponding signal. For each of one or more pairings of received measurement reports, the MDM then determines a signal parameter measurement change value corresponding to a change from the signal parameter measurement values associated with a first measurement report of the pairing to the signal parameter measurement values associated with a second measurement report of the pairing. Based on the one or more signal parameter measurement change values, the MDM determines an average signal parameter measurement change value and, based on the average signal parameter measurement change value, determines a mobility of the MS.
摘要:
A method for preparing hydroxymethylfurfural, which includes: a) mixing and dissolving triose or its derivatives and solvent 1 to obtain the first reaction mixture; b) reacting the obtained first reaction mixture with Alkaline Catalyst 1 to condense into hexose; c) mixing and dissolving the resulting hexose and solvent 2 to obtain the second reaction mixture; d) adding acid catalyst 2 to the second reaction mixture, then heating the second reaction mixture at 80˜280° C. to form the third reaction mixture including hydroxymethylfurfural; e) obtaining the hydroxymethylfurfural separating by separating from the third mixture. The method is a new synthetic way for preparing 4-hydroxymethylfurfural and 5-hydroxymethylfurfural.
摘要:
A mounting apparatus for an expansion card includes a bracket, and a securing member. The bracket is capable of fixing a front end of the expansion card. The securing member is slidably mounted to the bracket back and forth, for fixing a rear end of the expansion card.
摘要:
An electromagnetic interference (EMI) shield apparatus includes a shell, a hub, a shield member, a partition plate, a resilient member, and a cover. The hub is rotatably mounted within the shell. The shield member is wrapped around the hub. The partition plate is fastened to and rotatable together with the hub. The cover covered on an open end of the shell. The resilient member is connected between the partition plate and the cover to drive the hub to rotate to reel the shield member. The shield member is made of EMI shield material.
摘要:
A computer includes a cabinet, a plurality of hard disk drives (HDDs), and a plurality of HDD trays. The cabinet defines a plurality of groups of screw holes therethrough. Each of the HDDs defines a group of screw holes in the bottom surface thereof respectively. Each of the HDD trays includes a loading bracket and a plurality of supporters, and the supporters extending outward from the loading bracket; the loading bracket defines a plurality of arrays of screw holes, each array of screw holes having a unique size to allow a corresponding size of HDD to be secured thereon, the supporters define a group of screw holes corresponding to the screw holes defined on the cabinet.