A battery pack adapter system includes a device that allows different sized and shaped battery packs to be converted for use with multiple power tools from different brands. In one embodiment, a drill battery and drill are joined together through means of the battery pack adapter device. This allows the drill battery to power the drill even though the battery and drill have different configurations. The battery pack adapter device includes metal electrical connectors that extend from a top end of the device towards a bottom end of the device. The metal electrical connectors transfer the electrical energy from the battery to the power tool through by means of the adapter.

An inter-component connection structure includes a male fitting member; and a female fitting member that has a first nipping portion and a second nipping portion disposed to face each other, and nips an insertion portion of the male fitting member inserted between the first nipping portion and the second nipping portion. A pair of the male fitting member and the female fitting member is disposed in different components. The first nipping portion and the second nipping portion are respectively bent to form protruding portions toward surfaces thereof facing each other. A gap is provided at a tip portion of each of the first nipping portion and the second nipping portion. In at least one of the pair of the male fitting member and the female fitting member, an insulating portion is provided in a region that is not in contact with the other when fitted.

An interface (30) between a battery and an electrical device, the interface (30) comprising: a male terminal (24) and a female terminal (26) configured to receive the male terminal (24); the female terminal (26) having a female contact (36) of conductive material and the male terminal (24) having a male contact (32) of conductive material; wherein, at least one of the female contact (36) and the male contact (32) are resiliently deformable such that insertion of the male terminal (24) in the female terminal (26) provides an area (40) of face to face contact in which the male contact (32) and the female contact (36) conform to each other.

Discussed is a battery pack including: a plurality of battery cells; a case configured to receive the plurality of battery cells therein; a connector configured to electrically connect the battery pack to a device; and a printed circuit board (PCB) configured to control operation of the battery pack, the PCB being located inside or outside the case, and the connector being coupled to the PCB, wherein the connector comprises: a clip portion configured to form a first contact point at which the connector electrically contacts a device pin inserted into the connector; and a contact arm having one side connected to the clip portion, the contact arm being configured to form a second contact point having a distance to the device pin varying in inverse proportion to a distance to the device pin at the first contact point.

A wire harness including: a wire; a wire-side terminal that is electrically connected to the wire; and a terminal block to which the wire-side terminal is attached, wherein: the terminal block includes a holding fitting that holds the wire-side terminal in a state where the wire-side terminal is electrically connected to a contact, the holding fitting includes a plate, and at least one of the wire-side terminal and the holding fitting includes a curved surface that is in contact with the other of the wire-side terminal and the holding fitting in a state where rotation in two directions around two axes that intersect each other is allowed.

A female terminal includes a terminal body having a bottom wall and a spring member mounted in the terminal body. The terminal body includes a connecting tube portion continuous with the bottom wall, a tab of a male terminal being inserted into the connecting tube portion, a resilient contact piece configured to resiliently contact the tab inserted into the connecting tube portion, and a through hole penetrating through the bottom wall. The spring member is made of metal having a higher elastic modulus than the resilient contact piece. One end part of the spring member biases the resilient contact piece in a direction toward the tab by coming into contact with the resilient contact piece. The other end part of the spring member is located in a region inside a hole edge part of the through hole with the spring member mounted in the terminal body.

A female terminal is provided with a pair of connecting portions arranged to face each other across a male terminal insertion gap, a spring member held on the pair of connecting portions while sandwiching the pair of connecting portions and configured to bias the pair of connecting portions in mutually approaching directions along a facing direction, and a stopper protrusion projecting on at least one of the pair of connecting portions and configured to come into contact with the other of the pair of connecting portions to hold the male terminal insertion gap by restricting displacements of the pair of connecting portions in the approaching directions. Displacements in separating directions of the pair of connecting portions are allowed against a biasing force of the spring member, whereby a male terminal is press-fit into the male terminal insertion gap and disposed between the pair of connecting portions.

A receptacle socket assembly for lighting equipment comprising: a receptacle having a front side for receiving contacts of a control module, said receptacle housing a plurality of receptacle contacts, each receptacle contact being provided, at a front end, with a front contact portion for being electrically connected with a contact of a control module, and, at a rear end, with a rear contact portion; a wire connector having a front side and a rear side, said wire connector housing a plurality of connector contacts, each connector contact being provided, at a rear end, with a wire receiving contact for receiving and fixing a wire end and, at a front end, with a front contact portion; wherein the rear side of the receptacle and the front side of the wire connector are configured such that the wire connector is removably pluggable in the rear side of the receptacle.

A poke-in terminal includes a main body, a tab terminal socket at a mating end, and a wire socket at a terminating end. The tab terminal socket includes walls forming a tab terminal receptacle configured to receive a tab terminal. Upper and lower beam contacts extend into the tab terminal receptacle to interface with the tab terminal. The wire socket includes walls forming a wire receptacle configured to receive a wire. Poke-in retention beams extend into the wire receptacle to interface with the wire when poked into the wire socket. The wire socket includes a wire release element configured to be actuated to release the poke-in retention beams from the wire.

A circuit board assembly includes a circuit board substrate defining an aperture extending therethrough and configured to accept a planar male terminal from a first side of the circuit board substrate. The assembly further includes a female terminal extending from a second side of the circuit board substrate opposite the first side that defines a slot in a U-shaped portion on the second side of the circuit board substrate. The slot has an open end and a closed end. The slot is sized and arranged to receive the male terminal extending through the aperture be in an interference fit with the male terminal. The female terminal has a pair of tines, each tine having a fixed end attached to a base portion and a free end. The free end of one of the tines is disposed within a mounting hole in the circuit board substrate located adjacent the aperture.