摘要:
A torque-limited fastener turnable in fastening and loosening directions for one-time use includes a fastener head with a base, a set of lugs extending from the base, and an optional set of ramps extending from the base. The lugs include abutment surfaces facing a fastening tool slot recess that receives a fastening tool. When the fastening tool is turned in the fastening direction it bears against the lug surfaces. The lugs shear off or plastically deform into recesses when the fastening tool applies a limiting fastening torque. The ramps have abutment surfaces facing a loosening tool slot recess that receives a loosening tool. The ramps cam the fastening tool over the ramp abutment surfaces if the fastening tool is in the fastening tool recess and is turned in the fastening direction after the lugs have sheared off or have plastically deformed in response to application of the limiting torque.
摘要:
An electrical connector (100) includes an insulative housing (40) and a terminal module (10) retained in the insulative housing and configured with a selected terminal (11), a determined terminal (12) and a specific terminal (13) molded within a dielectric wafer (2). A coupling lead-frame (3) is disposed onto a surface of the dielectric wafer and has its main portion (3a) parallel and aligned with the specific terminal. The coupling lead-frame includes one pin leg (311) crossing over the determined terminal and having a physical and electrical engagement with the selected terminal so as to establish an electrical coupling between the selected terminal and the specific terminal.
摘要:
The present invention provides an electrical connector comprising an insulative housing having a plurality of passageways, and a plurality of contacts received in the passageways, respectively. The passageways each defines two inner walls opposite to each other, the two inner walls each having at least one first retention device. The contacts each include a base, an upper arm extending from one side of the base and a lower arm extending from another side. The upper arm further defines two protrusions on opposite sides thereof and the lower arm defines two protrusions on opposite sides thereof. In assembly, protrusions on upper arm are located above the first retention device of the passageways, and protrusions on the lower arm are located below the first retention device of the passageways such that movement of the contact in the passageway along length axis of the passageway is limited in a predetermined distance.
摘要:
A flash memory device includes a control board with a circuit board and a plug connecting with the circuit board, and a case enclosing the control board. The circuit board has two opposite surfaces. The plug includes an insulative housing and a number of contacts retained therein. The insulative housing has a tongue extending in a front to back direction. The contacts include a number of first contacts and a number of second contacts. Each first contact has a nonelastic contact portion and a tail portion arranged on the circuit board. Each second contact has an elastic contact portion located behind the nonelastic contact portion along the front to back direction and a tail portion arranged on the circuit board.
摘要:
An electrical connector (100) for being mounted on a motherboard, includes an insulative housing (1) having a front mating face providing a receiving cavity (111) extending rearwardly thereinto, an internal circuit board (31) containing a safety insulating and filtering circuitry and a telephone line-side modem controller (33), a pair of conductive contacts (2) retained to the insulating housing, and a number of footer contacts (32) connected with the internal circuit board for connecting to the motherboard. The safety insulating and filtering circuitry and the telephone line-side modem controller perform partial functions of a modem card assembly. The conductive contacts electrically connect with the internal circuit board and extend into the receiving cavity for contacting with a complementary connector.
摘要:
An electrical connector (100) mounted on a main printed circuit board (PCB), includes an insulative housing (1) defining at least one cavity (11, 12), an insert module (3) received in the housing, a rear ground plate (4), and an outer shell (2). The insert module includes a plurality of contacts (31, 32) extending into the cavity of the housing, and at least one internal PCB (53) containing at least one ground pad. The rear ground plate is coupled to a rear portion of the insert module and includes at least one upper grounding contact (41) electrically connecting with ground pad of the internal PCB and at least one lower grounding contact (43) extending downwardly for engaging with a ground pad of the main PCB. The outer shell is provided for surrounding the insulative housing with the rear ground plate sandwiched therebetween.
摘要:
An electrical system (1) includes a number of PC boards (10, 12), a same number of electrical connectors (14, 16), and a half number of extenders (18, 20, 22) provided in sets. Each set includes two PC boards, two electrical connectors mounted onto respective PC boards and one extender located between and engaging with the two electrical connectors. There are extenders that have various heights so that extenders of different heights mating with the electrical connectors establish various distances between the PC boards mounting the electrical connectors.
摘要:
Retention system (10) for guiding a processor module during mating, and retention thereafter, having a pair of retention members (12) with upper sections (20) pivotable from upright positions to recumbent positions with respect to lower sections (22) when a processor module is absent. Retention members (12) latch a module (16,100) therebetween upon full insertion into guide channels (52). Module (16) includes latching surfaces (78) that latch beneath latch surfaces (76) defined on a latch (70) that is deflectable outwardly to delatch. Module (100) includes latch projections (102) that seat in apertures (88) adjacent the guide channel entrance.
摘要:
The invention minimizes openings or cracks near the position at which a solder tail of a lead frame extends through a wall of a case molded about the lead frame and through which wall the solder tail extends, so as to prevent leakage through the wall near the solder tail. To accomplish this, a double-bend is formed in the solder tail before encapsulation of the lead frame. The double-bend comprises a first downward right-angle bend just outside the case wall, and an adjacent distally-spaced opposite bend such that the distal end portion of the solder tail extends substantially parallel to the plane of the lead frame. Subsequently, an anvil is positioned to support the portion of the lead tail between the case wall and the first downward bend in the solder tail, while a forming tool forces the distal end portion of the soldering tail downward to the desired final position. The final bending occurs primarily around the previously-formed opposite bend, rather than at or immediately adjacent to the case wall, thereby substantially eliminating openings in the molded case body where the solder tail passes through the case wall.
摘要:
A chip carrier socket 2 comprises, a chip carrier receiving member, multiple electrical terminals 4 extending over component mounting pads 64 of a substrate 10, and surface mount contacts 62 of the terminals 4 being aligned so as to engage the conductive mounting pads 64 that are in alignment with conductive leads 6 of a chip carrier 8, whereby the same mounting pads 64 can be used for surface mount attachment to the leads 6, and can be used for surface mount attachment to the terminals 4 of the chip carrier socket 2. The terminals include recesses 66 on edges adjacent to the surface mount contacts to prevent these edges from being wetted by solder. Certain ones of the terminals include posts 38 to uniquely orient the socket 2 with respect to the substrate 10.