Abstract: A plug with replaceable fuse includes a base having an extended first terminal and second terminal, the first terminal is connected to a fuse, and a socket of the base has a first solder contact, and the second terminal extending as a second solder contact. The first solder contact and the second solder contact are contained in the solid block safely, and air entrance is reduced to avoid the first solder contact and the second solder contact and the wire soldered onto them from being oxidized.

Abstract: A plug structure includes a base having a peripheral wall. Two blades extend from the peripheral wall. The peripheral wall defines a compartment receiving front and rear clamping seats. The front and rear clamping seats releasably receives a fuse. The compartment includes an opening in communication with the outside. A lid is movably mounted to close or reveal the opening. The lid includes a fuse seat. The fuse seat releasably receives the fuse. The fuse is mountable or removable together with the lid while mounting or removing the lid into or from the opening.

Abstract: An assembly-type female connector is generally comprised of an internal frame body and a group of socket terminals. The internal frame body comprises a main body, a lateral cover, and an outer cover, wherein at least two first slots are formed on the outside of the main body. The outer cover is composed of at least two independent segments, wherein each segment has an inwardly extended first wall and an inwardly extended second wall for insertion into the first slots of the main body, respectively, whereby the first walls of the segments and the second walls of the segments can be jointly, tightly inserted into the first slots of the main body. As a result, the outer cover and the main body can be assembled to each other, and the integral structure has a detachable tight assemblage.

Abstract: An assembly-type female connector is generally comprised of an internal frame body and a group of socket terminals. The internal frame body comprises a main body, a lateral cover, and an outer cover, wherein at least two first slots are formed on the outside of the main body. The outer cover is composed of at least two independent segments, wherein each segment has an inwardly extended first wall and an inwardly extended second wall for insertion into the first slots of the main body, respectively, whereby the first walls of the segments and the second walls of the segments can be jointly, tightly inserted into the first slots of the main body. As a result, the outer cover and the main body can be assembled to each other, and the integral structure has a detachable tight assemblage for increasing the product quality after the subsequent injection-molding process.

Abstract: A plug inner frame comprises a frame in the form of a block and at least two blades securely held by the frame. Each blade includes an enclosed section and an exposed section. Each blade includes an end having a wire-receiving groove. A neck is defined between the wire-receiving groove and the exposed section. The neck of each blade is so twisted that the wire-receiving grooves of the blades face the same direction.

Abstract: A combination of an inner frame and at least two blades for a plug is provided. The combination includes an inner frame and at least two blades. The inner frame includes at least two positioning holes and at least two hook members respectively located adjacent to the positioning holes. Each blade extends through an associated one of the positioning holes of the inner frame. Each blade includes a portion engaged with an associated one of the hook members, thereby retaining the blades in the inner frame during formation of a housing of a plug by injection molding.

Abstract: A combination of an inner frame and at least two blades for a plug is provided. The combination includes an inner frame and at least two blades. The inner frame includes at least two positioning holes and at least two hook members respectively located adjacent to the positioning holes. Each blade extends through an associated one of the positioning holes of the inner frame. Each blade includes a portion engaged with an associated one of the hook members, thereby retaining the blades in the inner frame during formation of a housing of a plug by injection molding.

Abstract: A plug blade includes a front section and a rear section. The rear section has a through-hole extending from a first face of the rear section through a second face of the rear section opposite to the first face. An insulating laying is formed on the rear section by injection molding and fills the though-hole of the rear section of the plug blade. The insulating layer includes a flange that abuts against an inner face of an inner frame during a procedure for forming a housing of a plug, thereby preventing moisture from entering an interior of the housing of the plug.

Abstract: A plug inner frame comprises a frame in the form of a block and at least two blades securely held by the frame. Each blade includes an enclosed section and an exposed section. Each blade includes an end having a wire-receiving groove. A neck is defined between the wire-receiving groove and the exposed section. The neck of each blade is so twisted that the wire-receiving grooves of the blades face the same direction.

Abstract: A plug blade structure comprises an enclosed section and an exposed section. The exposed section includes a wider front section and a narrower rear section. The enclosed section includes a shallow recess in a front end thereof for filling molten plastic material into the narrower rear section. A transverse through-hole extends from a face of the narrower rear section to the other face of the narrower rear section. A reinforcing guide slot is defined in the narrower rear section and communicated with the transverse through-hole. The transverse through-hole and the reinforcing guide slot guide the molten plastic material from a face of the narrower rear section to the other face of the narrower rear section such that the air on the faces of the metal blade can be well expelled to thereby allow smooth injection and that the resultant insulting layer formed on the narrower rear section has flush surfaces.

Abstract: The present invention relates to an inner pin base for a three-pole plug. The inner pin base has a round-sectional passageway at a top portion and two channels at two sides of a bottom portion. An upper and a lower rims of the passageway extend backward to form an upper and a lower tongue pieces, respectively, allowing a ground terminal to pass through while a projected portion on a top surface of the lower tongue piece engages with an oval hole at the end of the ground terminal passing therethrough. The channels each has a vertical and slender slot formed at their substantially closed front end, allowing a positive or a negative terminal to pass through.