摘要:
A Universal-Serial-Bus (USB) device has a USB plug that is centered over a center-line of a circuit board. The circuit board with flash memory and a USB flash controller has metal pads that a USB connector is soldered to. The USB connector has a rear step that is about half the height of the USB connector plug. Contacts on the rear step are soldered to the metal pads on the circuit board so that the USB connector is centered around the edge of the circuit board. The overall height of the flash device can be reduced since the bulky USB connector is not attached off-center to the circuit board, but is attached at the half-height rear step. Both the USB connector and the circuit board share the same center line, allowing a printed-circuit board assembly (PCBA) to be symmetric around the center line.
摘要:
A removable Flash integrated memory module card has a plastic shell and an integral Flash memory module. On the backside of the card, there are exposed contact pads. When the card is inserted into a card-hosting device, the card can communicate with the device through the exposed pads. The manufacturing method includes manufacturing of the memory module and utilizing plastic molding techniques for making the card outer body. The method involves preparing the substrate, mounting the components, testing the module, preparing the molding device, and molding the card body.
摘要:
A portable memory card including a molded plastic casing formed over a memory device and other circuits mounted on a substrate such that the molding material extends over side edges of the substrate to provide accurate width and thickness dimensions. Contact pads are formed on a lower surface of the PCBA substrate, which is exposed through a bottom of the casing. The PCBA is fabricated on a substrate carrier, then positioned inside of a mold assembly. During the molding process, a rod extends from an upper portion of the mold assembly and pushes the substrate against the lower surface. A vacuum is then applied to hold the substrate against the lower surface of the mold, and the rod is subsequently withdrawn from the mold cavity during injection of the molten molding material. A single cavity mold assembly provides molding material extends over front and back edges of the memory card.
摘要:
A card-type electronic apparatus such as an SD card, a CF card, a Memory Stick card, or a USB flash drive is formed from an upper and lower cover that are bonded together at an interior seam formed using ultrasonic joining. Lower sidewalls on the lower cover create an installation pocket for the upper cover. The installation pocket not only simplifies alignment between the upper and lower covers, but also contains any bonder material overflow that might otherwise affect the external dimensions of the apparatus housing. The lower sidewalls can completely surround the upper cover, for drop in installation. Alternatively, the lower sidewalls can partially surround the upper cover, so that the upper cover can be slid into place during assembly.
摘要:
Plastic casings are simultaneously molded onto several PCBAs attached to a carrier in a closely-spaced arrangement. All edges of each PCBA have integral connecting segments that extend through grooves formed in the associated mold assembly, and are pinched when the molds assembly is closed to precisely and reliably position the PCBA inside of an associated cavity during the molding process. In one embodiment, the PCB substrate is positioned in a bent arrangement to accommodate the use of inexpensive memory devices. Write-protect switches are provided.
摘要:
Secure-digital (SD) type memory cards are produced using one or more prefabricated cover portions and a molded casing portion. A sub-assembly is formed by mounting a printed circuit board assembly (PCBA) onto the cover portion such that the contact pads of the PCBA are exposed through associated windows defined in the cover. The sub-assembly is placed into a cavity formed in a mold assembly, and molten thermoplastic material is then injected into each cavity of the mold assembly under heat and pressure using known injection molding techniques, thereby forming a molded plastic casing portion that secures the PCBA to the cover and completes the memory card housing.
摘要:
A removable Flash integrated memory module card has a plastic shell and an integral Flash memory module. On the backside of the card, there are exposed contact pads. When the card is inserted into a card-hosting device, the card can communicate with the device through the exposed pads. The manufacturing method includes manufacturing of the memory module and utilizing plastic molding techniques for making the card outer body. The method involves preparing the substrate, mounting the components, testing the module, preparing the molding device, and molding the card body.
摘要:
A Universal-Serial-Bus (USB) device includes a PCBA mounted inside a plastic housing molded from a hard plastic (e.g., PC), and includes a handle portion mounted over a body section of the PCBA, and a plug support portion that is snap-coupled onto the housing and disposed under a plug section of the PCBA. The plug shell portion of the housing is integrally connected to (i.e., molded at the same time as or connected by way of molding to) the handle portion, and combines with the plug support structure extending under the plug section of the PCBA to form a structural arrangement similar to a conventional male USB connector plug that allows access to metal contacts formed on the PCBA, but without having the plug shell soldered to the PCBA.
摘要:
A low-profile Universal-Serial-Bus (USB) connector includes a substantially flat base structure that is received in the lower section of a conventional female USB connector, and includes metal contacts formed on an upper surface of the base structure. Wobble or vertical play is reduced by rails extending along side edges of the base structure that are partially inserted into gaps formed between the metal case and base structure of the female USB connector. Between metal contacts on the low-profile USB connector are raised ribs (dividers) that prevent undesirable damage or contamination to the metal contacts. The connector base structure of the low-profile USB connector can be separate or can be integrated with a circuit board that holds a flash memory chip and a USB controller chip.
摘要:
A two-piece flash-memory-drive card has an integrated slim Universal-Serial-Bus (USB) connector that fits into a standard USB socket. The slim USB connector has 4 metal contacts on a board that is encapsulated by a lower plastic case but no upper plastic case. Components are mounted onto the board on the side opposite the metal contacts and are covered by the lower plastic case. A thinner portion of the plastic case forms a light window that allows a light-emitting diode on the board to shine through the case. The lower plastic case is bonded to the board with adhesive or using snaps. Supporting underside ribs in the lower plastic case opposite the metal contacts allow most of the card to be thinner than the space inside the standard USB socket.