A power transfer system to facilitate the transfer of electrical power between tree trunk sections of an artificial tree is disclosed. The power transfer system can advantageously enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections. Power distribution subsystems can be partially disposed within the trunk sections. The power distribution subsystems can comprise a male end, a female end, or both. The male ends can have prongs and the female ends can have channels, and the prongs and channels may be positioned outside of the trunk sections. The prongs can be inserted into the channels to electrically connect the power distribution subsystems of neighboring tree trunk sections. The prongs and channels may be configured to engage one another without the need to rotationally align the tree trunk sections.

A power adapter may include a base wall mounted power adapter configured to be plugged into a wall power outlet and at least one extension adapter unit electrically coupled to the base wall mounted power adapter and configured to be extended away from the wall power outlet. The at least one extension adapter unit may include an electrical conduit reel configured to unravel in response to the at least one extension adapter unit being extended.

A power adapter may include a base wall mounted power adapter configured to be plugged into a wall power outlet and at least one extension adapter unit electrically coupled to the base wall mounted power adapter and configured to be extended away from the wall power outlet. The at least one extension adapter unit may include an electrical conduit reel configured to unravel in response to the at least one extension adapter unit being extended.

Systems, methods, and devices are provided in which cord storage cartridges are removably connected to a power distribution unit (PDU). The cord storage cartridge may include a cartridge housing having at least one aperture, a PDU interface associated with the cartridge housing and configured to removably connect the cord storage device to a mateable interface of the PDU, and a power output cord having a proximal end in electrical communication with the PDU interface and a distal end coupled with an output connector that is configured to connect to electronic equipment. The power output cord may be stowed at least partially within the cartridge housing in a retracted state and moveable through the at least one aperture to an extended state at least partially external to the cartridge housing.

A connector apparatus configured to connect to a connection port in order to transfer data and/or electrical power between two electronic devices or between an electronic device and an electrical outlet, the connector apparatus comprising: a first part configured to connect to the connection port by friction; two or more coupling portions which can engage or disengage when a force is applied to at least one of the coupling portions; and a retracting mechanism which pulls the two or more coupling portions towards each other when the coupling portions are separated by a separating force larger than a threshold force; wherein the first part remains connected to the connection port, while the two or more coupling portions engage or disengage when the force is applied and/or while the retracting mechanism pulls the two or more coupling portions towards each other.

A connector apparatus configured to connect to a connection port in order to transfer data and/or electrical power between two electronic devices or between an electronic device and an electrical outlet, the connector apparatus comprising: a first part configured to connect to the connection port by friction; two or more coupling portions which can engage or disengage when a force is applied to at least one of the coupling portions; and a retracting mechanism which pulls the two or more coupling portions towards each other when the coupling portions are separated by a separating force larger than a threshold force; wherein the first part remains connected to the connection port, while the two or more coupling portions engage or disengage when the force is applied and/or while the retracting mechanism pulls the two or more coupling portions towards each other.

A line tube adapter assembly and an endoscope. The line tube adapter assembly comprises: a housing 100 formed with an accommodation cavity 111; a connector 200 comprising a base 210 and a transmission line 220, the base 200 being accommodated in the accommodation cavity 111, and the transmission line 220 being connected to one end of the base 210; a line storage device 300 accommodated in the accommodation cavity 111, the line storage device 300 being formed with an accommodation space 310, and the accommodation space 310 being configured to accommodate part of the transmission line 222; and a line tube 400 arranged at the end of the line storage device 300 away from the base 210, the line tube 400 being connected to the housing 100. The line tube adapter assembly comprises the line storage device 300, and the overlong transmission line 220 can be accommodated in the accommodation space 310 of the line storage device 300 in a bending and folding manner, so that the overlong transmission line 220 is prevented from being accommodated in the housing 100 disorderly, and the transmission line 220 is further prevented from being extruded and damaged in a matching process of the housing 100 and the line tube 400.

A line tube adapter assembly and an endoscope. The line tube adapter assembly comprises: a housing 100 formed with an accommodation cavity 111; a connector 200 comprising a base 210 and a transmission line 220, the base 200 being accommodated in the accommodation cavity 111, and the transmission line 220 being connected to one end of the base 210; a line storage device 300 accommodated in the accommodation cavity 111, the line storage device 300 being formed with an accommodation space 310, and the accommodation space 310 being configured to accommodate part of the transmission line 222; and a line tube 400 arranged at the end of the line storage device 300 away from the base 210, the line tube 400 being connected to the housing 100. The line tube adapter assembly comprises the line storage device 300, and the overlong transmission line 220 can be accommodated in the accommodation space 310 of the line storage device 300 in a bending and folding manner, so that the overlong transmission line 220 is prevented from being accommodated in the housing 100 disorderly, and the transmission line 220 is further prevented from being extruded and damaged in a matching process of the housing 100 and the line tube 400.

A power adapter may include a base wall mounted power adapter configured to be plugged into a wall power outlet and at least one extension adapter unit electrically coupled to the base wall mounted power adapter and configured to be extended away from the wall power outlet. The at least one extension adapter unit may include an electrical conduit reel configured to unravel in response to the at least one extension adapter unit being extended.

A power adapter may include a base wall mounted power adapter configured to be plugged into a wall power outlet and at least one extension adapter unit electrically coupled to the base wall mounted power adapter and configured to be extended away from the wall power outlet. The at least one extension adapter unit may include an electrical conduit reel configured to unravel in response to the at least one extension adapter unit being extended.