Abstract: An electrical connector includes an insulation housing having an insertion passage arranged at a top surface thereon, a receiving space arranged at a bottom surface thereon. An electrical contact covers the bottom surface and side surfaces of the insulation housing having a body portion covering the bottom surface, an elastic connection portion received in the receiving space, sidewalls covering the side surfaces and soldering portions. An engagement portion includes a projection member arranged at the side surface of the insulation housing and a fixing hole opened through the sidewall of the electrical contact for engaging with the projection member. While a contact of a matching device obliquely inserts into the insertion passage and presses the elastic connection portion, the electrical contact engages with the insulation housing securely via the engagement portion for preventing the electrical contact departing from the insulation housing by the pressing force from the contact of the matching device.

Abstract: A memory connector includes an insulative housing, a plurality of terminals accommodated in the insulative housing, a cover engaged with the insulative housing and a switch mechanism secured in the insulative housing. The switch mechanism includes a first member and a second member. The first member keeps a proper distance to the second member. When a memory card is fully inserted into the memory card connector, the memory card passes over and pushes the first member to make electric connection to the second member. The connection between the first member and the second member generates a signal to judge whether the memory card is right inserted or not.

Abstract: A card connector includes an insulating housing and an upper cover coupling with the insulating housing. The insulating housing includes a bottom wall, two sidewalls and a back wall, all the walls forming a receiving space therebetween to receive one of a variety of memory cards. One side of the receiving space defines a sliding groove and the other side defines a terminal cavity. Contacts which are divided into two groups are received in the insulating housing respectively. An ejecting apparatus is arranged in the sliding groove. An elastic terminal, located in the terminal cavity, has a base portion. An elastic arm connects with the base portion and continuously protrudes toward the inside bottom wall to form a contacting portion.

Abstract: A memory card connector includes an insulating housing, an ejector, a plurality of first electric terminals, a plurality of second electric terminals, a detected apparatus and a cover. The insulating housing includes a base, a left wall, a right wall and a front wall. All the walls define an upper space and a down space. A glide notch is formed in the right wall. The first electric terminals and the second electric terminals are located in the insulating housing. The ejector is located in the glide notch. The memory card connector can accept a memory card. The detected apparatus determines the correctness of the way that inserting the memory card into the memory card connector.

Abstract: A plug connector includes an upper metal cover, a lower metal cover and a conductor assembly. The upper metal cover has a front cavity and a back cavity which has a top plank. The bottom of the front cavity extends backward and forms an extension portion. Two sides of the back of the top plank bend downward and form two opposite side planks. The side plank stretches forward from its front and forms a locking slice. The conductor assembly includes a plurality of conductor pins, a housing and latches. The conductor pins and the latches are held in the housing. The housing includes a front housing and a back housing. Each side of the back housing opens a preventing recess. At the junction of the back housing and the front housing, a front wall of the back housing hollows inside and defines a recessed portion.

Abstract: A manually operated brushless DC motor is disclosed herein, which is an educational electric motor and can overcome the shortcoming hard to visualize the movement of a motor due to the high-speed rotation of the motor. The manually operated brushless DC motor according to the present invention provides two switches to replace the brushes used in a conventional motor. Users/learners have to alternatively press the switches to complete a closed circuit and drive the motor to rotate. Only when the rotor rotates in synchronism with the pressing rate of the switches, the rotor accelerates. Otherwise the rotation speed of the rotor decreases. The manually operated brushless DC motor provides the users/learners with the opportunity of viewing the rotor rotating in a slow motion, and the experience of manually operating the motor.

Abstract: A plug connector includes an insulative housing and a plurality of spring contacts retained therein. The insulative housing has a front face, a first mating face protruding from the front face, a plurality of passages extending rearwards from the first mating face for receiving a respective spring contact therein and a locking member secured in the insulative housing. The locking member has a second mating face abutting against the first mating face, a locking arm projecting forwards from the second mating face, and a pad positioned on the second mating face beside the locking arm. The shape of the gap between the plug connector and receptacle connector can be changed by adjusting the thickness of the pad. Properly, the gap is shaped to be a rectangle, so that the spring contact is provided with sufficient normal force to obtain a stable connection.

Abstract: A battery connector includes a dielectric housing having a plurality of terminal passages. A plurality of terminals are received in the terminal passages. Each terminal includes a supporting portion, a press portion twisted up in the front portion of the supporting portion, a first bending portion extending from the rear portion of the supporting portion, an elastic portion formed on the end of the first bending portion, a plug portion extending from the end of the elastic portion, a second bending portion formed on the upper portion of the plug portion, a guidable portion extending from the second bending portion. The supporting portion and the press portion extending out of a bottom surface of the dielectric housing to contact a printed circuit board elastically so that the signal between the battery connector and a electronic device transmits stably and the assembly height of the battery connector is adjustable.

Abstract: A manually operated brushless DC motor is disclosed herein, which is an educational electric motor and can overcome the shortcoming hard to visualize the movement of a motor due to the high-speed rotation of the motor. The manually operated brushless DC motor according to the present invention provides two switches to replace the brushes used in a conventional motor. Users/learners have to alternatively press the switches to complete a closed circuit and drive the motor to rotate. Only when the rotor rotates in synchronism with the pressing rate of the switches, the rotor accelerates. Otherwise the rotation speed of the rotor decreases. The manually operated brushless DC motor provides the users/learners with the opportunity of viewing the rotor rotating in a slow motion, and the experience of manually operating the motor.

Abstract: A dustproof receptacle connector includes a dielectric housing, a plurality of female contacts disposed in the housing, and a slider unit installed in the housing. The housing has a receiving cavity with a front opening defined in a front surface thereof, and a pair of mounting holes defined in a rear wall of the housing communicating with the receiving cavity. The slider unit includes a dustproof cover slidably received in the receiving cavity for sealing the front opening and a pair of springs disposed on the dustproof cover. A pair of longitudinal pillars extending backwards from the dustproof cover, with the free end of each pillar slidably disposed in the corresponding mounting hole of the housing. Each spring is retained on the corresponding longitudinal pillar, with one end thereof abutting against the dustproof cover and the other end thereof abutting against the rear wall of the housing.