Abstract: A USB-chargeable emergency light structure has a light base, a charging/outputting circuit unit, a connector and a charging socket. The light base defines an accommodating space therein for receiving the charging/outputting circuit unit that has a plurality of light sources. The connector partially protrudes from the base and is electrically connected to the charging/outputting circuit unit. The connector is a USB connector. The charging socket is mounted on the light base and electrically connected to the charging/outputting circuit unit. The lighting structure thereby constructed can be used as an emergency light, a night light, a flashlight or a charging device.

Abstract: A fast combinational charger includes a shell body, a circuit unit, and a combinational module. The shell body has a bearing seat at the outer side. The circuit unit is disposed in the shell body, and has a first connector. The combinational module includes a module shell body and a module circuit board. The module circuit board is disposed in the module shell body. The module circuit board has terminals protruding out of the module shell body. The combinational module can be placed on the bearing seat. The module circuit board can be connected with the first connector to achieve electric connection with the circuit unit.

Abstract: A portable device for coiling cable and amplifying sound, the device comprises a cover body and an amplifier with a coiled cable, wherein an accommodating space is formed in an inner portion of the cover body, and the accommodating pace partitioned into a first space and a second space by an isolating device. A fixing member is disposed on an outer side of the cover body. The portable device for coiling cable and amplifying sound includes a casing, a cable coiling mechanism, a communication cable, an earphone, a circuit unit, and a connector, wherein the communication cable is coiled around the cable coiling mechanism, and the earphone and the circuit unit connected to the communication cable. The circuit unit has an amplifying element, and the connector connected to the circuit unit by a connecting wire. And the amplifier with a coiled cable is accommodated to the second space of the cover body.

Abstract: A wire-winding box structure with an increased use area has a wire-winding box body, a wire-winding disk, a communication wire and a power spring. One end of the communication wire is wound around a wire-winding pivot of the wire-winding disk to form an inner ring portion. The other end of the communication wire is wound in a receiving groove to form an outer ring portion. The communication wire, can thus be disposed around the wire-winding pivot and in the receiving groove at two faces of a first disk body of the wire-winding disk, respectively. The power spring is received in a spring receiving groove of the wire-winding disk. One fastening end of the power spring is fastened at the wire-winding disk, and the other fastening end thereof is fastened at the wire-winding box body.

Abstract: A USB transmission line having switching function comprises a transmission line, a first connector, a second connector, and a circuit unit. The first and second connectors are USB connectors, and are connected at two ends of the transmission line. The circuit unit has switching function of unidirectional transmission and bi-directional transmission, and is disposed on the transmission line between the first and second connectors. The transmission line can thus flexibly select the unidirectional transmission function or the bi-directional transmission function according to practical necessity.

Abstract: A clamping device having loss-guard function includes a shell body, a circuit unit, and a connection component. The shell body has a receiving space therein. A clamping sheet is disposed on the outer wall of the shell body. The circuit unit is disposed in the receiving space, and can receive signals emitted by an emission component disposed on a portable electronic device. The circuit unit has alarming components. The connection component is connected on the portable electronic device. The connection component also is connected with the shell body in detachable way. The clamping device can clamp the portable electronic device onto a user's waistband. When the portable electronic device is away from the circuit unit a certain distance, the circuit unit will be immediately driven to give out alarming lights or sounds, thereby preventing the portable electronic device from being lost or stolen by thieves.

Abstract: The present invention provides a supporting and skidproof structure of car lighter plug, which comprises a plug body having an insertion portion, an elastic conducting post matched at the front end of the insertion portion, a plurality of elastic conducting sheets protruding out of the sidewall of the insertion portion, and a support unit disposed on the plug body. The support unit has a support component, which can be controlled to make outward spreading or inward retraction. Thereby, the car lighter plug can be supported and firmly positioned in a car lighter insertion hole, and will not skid or sway, hence achieving good electric connection.

Abstract: A car lighter plug of quick disassembly includes a first body, a second body, a pivot, and a first quick-disassembly twist button. The first body has an elastic conducting post and several elastic conducting sheets. The rear end of the first body has a through hole. Several elastic sheet portions, each having a positioning body, are formed in the through hole. The periphery of the elastic sheet portions has a vacant space. The front end of the second body has a second pivotal seat. The pivot has a pivotal portion, positioning teeth, and a stop ring. The pivotal portion passes through the through hole and the pivotal seat. One end of the first quick-disassembly twist button has a cam portion. The first quick-disassembly twist button is pivotally connected at one end of the first pivot. The cam portion abuts against the first body. The positioning teeth engage the positioning bodies.

Abstract: The present invention provides a supporting and skidproof structure of car lighter plug, which comprises a plug body having an insertion portion, an elastic conducting post matched at the front end of the insertion portion, a plurality of elastic conducting sheets protruding out of the sidewall of the insertion portion, and a support unit disposed on the plug body. The support unit has a support component, which can be controlled to make outward spreading or inward retraction. Thereby, the car lighter plug can be supported and firmly positioned in a car lighter insertion hole, and will not skid or sway, hence achieving good electric connection.

Abstract: A USB transmission line having switching function comprises a transmission line, a first connector, a second connector, and a circuit unit. The first and second connectors are USB connectors, and are connected at two ends of the transmission line. The circuit unit has switching function of unidirectional transmission and bi-directional transmission, and is disposed on the transmission line between the first and second connectors. The transmission line can thus flexibly select the unidirectional transmission function or the bi-directional transmission function according to practical necessity.

Abstract: A cable reel with a positioning mechanism includes a reel casing having a chamber therein; a cylindrical receptacle having a circumferential tracing line groove formed on a sidewall of the cylindrical receptacle; a winding plate having a pivot hole thereon and a guiding groove formed on an interior wall within the pivot hole, wherein the winding plate is pivotally mounted on the cylindrical receptacle through the pivot hole; a communication cable wound against the winding plate; a swirling spring connecting the reel casing with the winding plate; and a ball bearing movably disposed in the tracing line groove.

Abstract: A wire winding box with a charging unit comprises a casing, a rotary disk, a spiral spring, a communication wire, a charging unit and a generator. The casing has a receiving groove therewithin. The rotary disk is pivotally installed in the receiving groove. The spiral spring is installed between the casing and the rotary disk. The communication wire winds around the rotary disk, and one end of the communication wire passes out of the casing. The charging unit is installed within the casing and formed by a gear set and a generator; and the gear set is installed between the rotary disk and the generator. Thereby, when the communication wire is pulled, the power from the rotary disk is transferred to the generator through the gear set, so that the generator can generate power.

Abstract: A multifunctional car adapter is provided. The multifunctional car adapter includes a main body with a first chamber formed therein. The main body has extending therefrom a connecting portion defining a second chamber. A plug unit is disposed in the second chamber, while a socket unit is disposed in the first chamber and is electrically connected with the plug unit. A circuit board is also disposed in the first chamber to be electrically coupled to the plug unit for Universal Serial Bus (USB) interface thereto. A USB connector is coupled to the circuit board for electrical connection to the plug unit.

Abstract: The present invention provides a universal serial bus (USB) voltage transformer, which comprises a main body, a transformer circuit unit, and several connectors. The transformer circuit unit is disposed in or at the inside of the main body. The connectors are electrically connected to the transformer circuit unit directly or via a connection cable. A USB voltage transformer having travel charging function is thus formed. The USB voltage transformer of the present invention can simultaneously charge several portable electronic devices like mobile phones, personal digital assistants, electronic translators, and small cameras.

Abstract: An adapting head having a charging mechanism comprises a main body, a circuit unit, first insertion elements, second insertion elements, and a bearing seat. A receiving space is disposed in the main body to receive the circuit unit. The circuit unit has a circuit board and a plurality of contact sheets. The first and second insertion elements are connected to two ends of the circuit board. The bearing seat is joined on the outside of the main body. The bearing seat can be integrally joined on the main body, or can be separately on the main body. One end of each of the contact sheets sticks into the bearing seat. The adapting head can be attached on an adaptor to simultaneously charge a plurality of electronic devices or rechargeable batteries, hence achieving more flexible and convenient use.

Abstract: An earphone cable-receiving device includes a cable-receiving structure and a power recharge unit. The cable-receiving structure includes an outer case, a cable-winding plate, a communication cable, and a spiral spring. The cable-winding plate and the spiral spring, connected to each other, are further received within the outer case. The communication cable is wound on the cable-winding plate, and further has an external terminal mounted with a first connector that can removably connect an earphone. The power recharge unit is mounted into the outer case and is further connected to the communication cable. The power recharge unit is further connected to a second connector via a transmission cable to recharge a portable electrical device connected to the second connector. Thereby, various types of power sources can be connected to the earphone cable-receiving device to recharge the portable electrical device.

Abstract: A vocal transmitter device includes a cable-receiving structure, an earphone, a fastener and a microphone. The cable-receiving structure has a case, a cable-winding plate, a connection cable, and a spiral spring. The spiral spring and the cable-winding plate are arranged in the case and connected to each other. The earphone is connected to a terminal of the connection cable. The fastener is connected on the case of the cable-receiving structure. The microphone is arranged either in the case of the cable-receiving structure or in the fastener. Another terminal of the connection cable is connected to the microphone. A miniature vocal transmitter device is hence accomplished.

Abstract: A portable wire reel capable of doing emergency charging work is provided. The wire reel includes a main body having a chamber therein and a wire slot thereon; a circuit unit disposed in the chamber; a universal serial bus (USB) connector electrically connected with the circuit unit; an input line having one end electrically connected with the circuit unit and the other end connected with a plug, wherein the input line is wound around the main body lengthwise within the wire slot; and a battery connecting base electrically connected with the circuit unit.

Abstract: A portable multi-function charger for electronic devices comprises a body, a circuit section, an input end, an output end, an output cord and a battery connector. The body has a cavity therein to receive the circuit section. The circuit section has a circuit board therein and having a plurality of spring contacts. The input end, the output end, the output cord and the battery connector are connected to the circuit board. A mounting stage is arranged on outer surface of the body and has a plurality of contacts therein. The multi-function charger can be electrically connected to notebook computer, wall socket, vehicle charger or battery for inputting electric power. The inventive multi-function charger can be used to simultaneously charge a plurality of portable electronic devices and rechargeable battery.

Abstract: An improved short wire length wire-winding box includes a rotary disk driven by a spiral reed and pivotally installed in a casing having a receiving groove. The communication wire is at first wound around a pivotal shaft (inner circle) for several turns, and then is placed in the rotary disk. The rotary disk is rotated so that the communication wire is wound around a second ring (outer circle) in the same direction. When the communication wire is directly pulled out from the wire-winding box, the communication wire wound around the pivotal shaft will be pulled more and more tightly so that the communication wire wound around the pivotal shaft will not disperse for avoiding the situation that part of the communication wire can not be rewound. Moreover, the communication wire wound around the pivotal shaft can be tightly positioned thereon without any positioning device.