Abstract: An electrical plug connector includes an insulated housing and a rear positioning block. The rear positioning block is assembled to the rear of the insulated housing. The rear positioning block includes a base and a gluing passage. The front of the base corresponds to the rear of the insulated housing. The width of the base is greater than the width of the insulated housing. The periphery of the base is protruded from the periphery of the insulated housing. The gluing passage is formed at a peripheral area of the base, and the gluing passage is defined through the base from the front to the rear.

Abstract: An electrical plug connector assembly has an insulative housing, a first terminal set, a second terminal set and a circuit board. The first and second terminal sets are mounted in the insulative housing. The first terminal set has multiple first conductive terminals each including a first soldering section. The second terminal set has multiple second conductive terminals each including a second soldering section. The first and second soldering sections are soldered on an identical surface of the circuit board such that only one single soldering process is required to solder all of the first and second conductive terminals to the circuit board. The production rate of the electrical plug connector assembly is therefore improved.

Abstract: An electrical plug connector includes an insulated housing, a plurality of upper-row plug terminals, a plurality of lower-row plug terminals, and a rear positioning block. The insulated housing includes a rear assembling portion defined at the rear of the insulated housing. The rear positioning block is assembled to the rear of the insulated housing. The rear positioning block includes a plurality of through holes and a buckling portion. The through holes are defined through the rear positioning block from the front to the rear. The rear of the upper-row plug terminals and the rear of the lower-row plug terminals respectively pass through the through holes. The buckling portion is defined at the front of the rear positioning block. The buckling portion is adapted to be mated and engaged with the rear assembling portion.

Abstract: An electrical plug connector includes a plug metal shell, an insulation housing bracket, a plug grounding contact, and a grounding member. The plug metal shell encloses a tongue portion of the insulation housing bracket. The plug grounding contact is held inside the insulation housing bracket. The grounding member is disposed between the plug metal shell and the plug grounding contact and spaced from the first side of the insulation housing bracket. A connecting portion is selectively disposed on the grounding member or on the plug grounding contact. The connecting portion mechanically contacts to the grounding member and the plug grounding contact such that the grounding member is electrically connected to the plug grounding contact.

Abstract: An electrical receptacle connector includes a receptacle shell, an insulation housing bracket, a receptacle grounding contact, and a grounding member. The insulation housing bracket is disposed inside the receptacle shell. The receptacle grounding contact is held inside the housing base. The grounding member is disposed on a first side of the insulation housing bracket and located between the insulation housing bracket and the receptacle shell. A connecting structure is selectively disposed on the grounding member or on the receptacle grounding contact. The connecting structure penetrates through the insulation housing bracket and mechanically or physically connects the grounding member and the receptacle grounding contact such that the grounding member is electrically connected to the receptacle grounding contact.

Abstract: A receptacle connector includes an insulation housing bracket, a first flat grounding contact and a shielding member. The housing base has a first outer surface, and the first flat grounding contact is combined with the insulation housing bracket. The shielding member includes a shielding body and a first connecting portion. The shielding body is installed inside the insulation housing bracket, and the first flat grounding contact is located between the first outer surface and the shielding member. The first connecting portion protrudes from the shielding body and is securely fixed on the first grounding contact in a laser welding manner, such that the shielding body is electrically connected to the first grounding contact.

Abstract: An electrical plug connector includes a metallic shell, an insulated housing, and a grounding sheet. The insulated housing is received in a receiving cavity of the metallic shell and includes a mating room and side assembling cavities. The side assembling cavities are defined at two sides of the insulated housing and communicate with the mating room. The grounding sheet is at the insulated housing and in contact with the metallic shell. The grounding sheet includes a main body in the insulated housing, side arms extended toward the side assembling cavities from two sides of the main body, hook portions extended toward the mating room from the fronts of the side arms, and mounting legs extended from the rears of the side arms and protruded from the side assembling cavities.

Abstract: A wrist strap includes a receiving member for receiving an electronic device and a surrounding strap. The receiving member includes a base board and a side plate extending from an edge of the base board. The base board defines a slot. The slot defines a receiving hole and two positioning holes. The surrounding strap includes a first end, a second end opposite to the first end, and a protruding portion located between the first end and the second end. The free end of the protruding portion includes two fixing pieces. Each fixing piece protrudes a fixing portion toward the surrounding strap. The protruding portion and the two fixing pieces extend through the receiving hole of the receiving member, the receiving member and the surrounding strap rotate relative to each other to make the two fixing portion be locked in the two positioning holes.

Abstract: An electrical connector plug for electrical connection to an electrical connector socket. The electrical connector plug includes: an insulation body extending in a longitudinal direction and including a base portion a mounting portion fixed to the base portion; two rows of resilient conductive terminals mounted in the insulation body and arranged symmetrically in pivotal rotation with respect to the longitudinal direction, each comprising a horizontal segment fixed on the base portion and a bended protrusion contact segment extending from the horizontal segment; an electrical conductive plate mounted on the mounting portion including a front segment and an impedance drop segment, extending from the front segment toward the base portion; and a shielding case mounted on the base portion and electrically connected to the metal housing.

Abstract: A wrist strap includes a fixing strap and a surrounding strap. The fixing strap includes a fixing end and a movable end. The fixing strap defines a recess between the fixing end and the movable end. The recess defines a receiving hole penetrating the fixing strap and two grooves at two opposite sides of the receiving hole. The surrounding strap includes a first end and a second end. The surrounding strap includes a protrusion between the first end and the second end. The protrusion includes two fixing portions toward the surrounding strap. The protrusion extends through the receiving hole of the fixing strap. The fixing strap and the surrounding strap rotate relative turn to each other to make the two fixing portions lock in the two grooves.

Abstract: A wrist strap includes a receiving member for receiving an electronic device and a surrounding strap. The receiving member includes a base board and a side plate extending from an edge of the base board. The base board defines a slot. The slot defines a receiving hole and two positioning holes. The surrounding strap includes a first end, a second end opposite to the first end, and a protruding portion located between the first end and the second end. The free end of the protruding portion includes two fixing pieces. Each fixing piece protrudes a fixing portion toward the surrounding strap. The protruding portion and the two fixing pieces extend through the receiving hole of the receiving member, the receiving member and the surrounding strap rotate relative to each other to make the two fixing portion be locked in the two positioning holes.

Abstract: An electrical receptacle connector includes an insulated housing, upper-row terminals, lower-row terminals, and a grounding sheet. The insulated housing includes a base portion and a tongue portion. The tongue portion is extended from one side of the base portion and has an upper surface and a lower surface. The upper-row terminals are disposed at the base portion and the tongue portion and include a ground terminal located at the upper surface The lower-row terminals are disposed at the base portion and the tongue portion and include a ground terminal located at the lower surface. The grounding sheet is disposed at the insulated housing and located between the ground terminal of the upper-row terminals and the ground terminal of the lower-row terminals. The grounding sheet includes one or more protruded portion in contact with the ground terminal of the upper-row terminals or the ground terminal of the lower-row terminals.

Abstract: An electrical plug connector includes an insulating housing, two terminal sets, and a metallic component. The insulating housing includes a front portion and a rear portion, and a receiving cavity is formed inside the front portion. The two terminal sets separately include a plurality of terminals and are arranged in an upper-row terminal set and a lower-row terminal set. Each terminal includes a contact portion disposed in the receiving cavity, a retaining portion retained in the insulating housing, and a soldering portion disposed in the rear of the insulating housing. The metallic component includes a plate body and two latches. The plate body is disposed in the rear portion and clamped between the upper-row and lower-row terminal sets. The two latches are separately disposed at two sides of the plate body and symmetrical to each other. The plate body and the two latches are formed in one piece.

Abstract: The invention relates to an electrical plug connector which comprises an insulated housing, a metallic shell, two terminal sets, and a circuit board. The insulated housing includes a front portion and a rear portion. The front portion extends forwardly from the rear portion and an inside of the front portion forms a receiving cavity. The metallic shell covers the insulated housing. Each terminal set is composed with a plurality of terminals. Each terminal includes a contact portion, a retaining portion, and a soldering portion. The retaining portion is retained in the insulated housing. The soldering portion extends backwardly from the retaining portion. The soldering portions are arranged as a upper row and a lower row in symmetry and the soldering portion is in spring arm type. The circuit board is inserted between the upper row and the lower row of the soldering portions. The upper row and the lower row of the soldering portions clip elastically the circuit board.

Abstract: This invention discloses systems and methods for determining the sequence of amino acids in a short peptide chain that constructs a protein. The protein is firstly hydrolyzed to various short peptides and amino acid enantiomers. Then, the systems and method are used to separate the short peptides and the amino acid enantiomers, identify qualitatively each of the amino acid enantiomers, and obtain the molecular mass signal for each of the peptides. After that, the identified amino acid enantiomers are used to construct any possible short peptides in an order from the smallest molecular weight dipeptide to higher molecular weight short peptides, and the correct short peptides is confirmed by matching the molecular weight obtained from the mass spectrometry measurement, then, the short peptides are combined to give a large peptide. The process is continued until the whole amino acid sequence of the peptide chain of protein can be determined.

Abstract: An electrical connector plug for electrical connection to an electrical connector socket. The electrical connector plug includes: an insulation body extending in a longitudinal direction and including a base portion a mounting portion fixed to the base portion; two rows of resilient conductive terminals mounted in the insulation body and arranged symmetrically in pivotal rotation with respect to the longitudinal direction, each comprising a horizontal segment fixed on the base portion and a bended protrusion contact segment extending from the horizontal segment; an electrical conductive plate mounted on the mounting portion including a front segment and an impedance drop segment, extending from the front segment toward the base portion; and a shielding case mounted on the base portion and electrically connected to the metal housing.

Abstract: An electrical receptacle connector includes a metallic shell, an insulated housing, a plurality of upper-row receptacle terminals, and a plurality of lower-row receptacle terminals. The insulated housing is received in the metallic shell. The upper-row receptacle terminals are held in the insulated housing and include a plurality of tail portions protruded from a bottom of the insulation body to be arranged into a row. The lower-row receptacle terminals are held in the insulated housing and include a plurality of tail portions protruded from the bottom of the insulated housing to be arranged into a first row and a second row. The tail portions of the lower-row receptacle terminals are parallel to the tail portions of the upper-row receptacle terminals.

Abstract: An electrical receptacle connector includes an insulated housing, a metallic shell and a plurality of connecting portions. The insulated housing is in the metallic shell. The metallic shell includes a tubular body, a connecting plate and a folded portion. The tubular body includes an outer wall and an inner wall. The connecting plate is at the outer wall or the inner wall, and the folded portion is extended from the tubular body toward the connecting plate. The connecting portions are configured to fix the connecting plate to the tubular body so that the connecting plate is fixed on the tubular body.

Abstract: A reciprocating device used for electric hair cutter includes a housing, a magnetism transmitting unit, a coil unit, a reciprocating unit, a pivotal unit and a stationary magnet unit. After the coil unit is fitted to the magnetism transmitting unit, the former is partially surrounded by the latter. Through the pivotal unit, the reciprocating unit is pivotally fitted to the reciprocating device near the latter's rear or front end. The front or rear portion of the reciprocating unit passes through the magnetism transmitting unit. The other end of the reciprocating unit passes through the stationary magnet unit. In this manner, a portion of the reciprocating unit is housed or enclosed in the magnetism transmitting unit, allowing a reduction in the size of the prior art reciprocating device and hence the electric hair cutter in the prior art.

Abstract: An electrical plug connector includes an insulated housing and a metallic shell. The insulated housing includes a base member, an upper portion, a lower portion and defines a mating room between the upper portion and the lower portion. The upper portion and the lower portion are extending from one side of the base member. The metallic shell encloses the insulated housing, and includes a front shell and a rear shell. The front shell includes a front cover portion and a rear cover portion. The rear cover portion is extending from a rear side of the front cover portion. The rear shell encloses the front side of the base member and includes a front extending plate propped on the rear cover portion, so that the front shell and the rear shell are fixed with each other.