Abstract: An electric component unit including a lead wire connection terminal fitment which is capable of being readily fixed on a terminal fitment mounting section of a casing and facilitating connection of a lead wire thereto is provided. A terminal fitment fit section of a terminal fitment mounting section of a casing is formed with a pair of terminal mounting fit grooves, in which a fitted section of a lead wire connection terminal fitment is fitted. The lead wire connection terminal fitment is made of a metal sheet of 0.7 mm in thickness by machining. A terminal section of the terminal fitment is formed into a width equal to or above a thickness of the metal sheet. The lead wire connection terminal fitment also includes a lead wire connection section, which is provided with a lead wire insertion opening which permits a core of a lead wire to be inserted therethrough and a lead wire press-fit groove in which the core of the lead wire displaced from the lead wire insertion opening is press-fitted.

Abstract: A high-voltage variable resistor unit capable of firmly fixing a lead wire connection terminal formed by bending a linear conductor to a terminal fixture of an insulating casing. The terminal fixture is formed with a coupling section receiving recess for receiving a coupling section of the lead wire connection terminal therein in a manner to be in proximity to a terminal holder of a terminal fixing structure including a pair of holding elements. The coupling section of the lead wire connection terminal is pressedly fitted in the coupling section receiving recess and a held section of the terminal is interposedly held between the holding elements of the terminal holder.

Abstract: A high-voltage variable resistor unit including a terminal connection structure capable of preventing upward movement or rotation of the terminal by simple construction. A terminal is provided with a connecting portion between a held portion and a lead wire connected portion. A terminal fixing portion of the insulating casing is provided adjacent to a terminal holding portion with a connecting portion receiving recess in which the connecting portion of the terminal is received. An insulating resin is charged in the connecting portion receiving recess and hardened. The walls surrounding the connecting portion receiving recess have a pair of grooves each formed on a pair of walls facing to a first linear connecting portion and a second linear connecting portion of the terminal.

Abstract: A high-voltage variable resistor unit capable of permitting a circuit board to be decreased in size and preventing interruption of output thereof. A circuit board having a resistive pattern including a plurality of variable resistance elements formed on a front surface thereof is arranged in a board receiving chamber. A terminal fitment and a slide element are so arranged that a contact point between a plate-like section of the slide element and a contact section of the terminal fitment is defined in a manner to be spaced from the front surface of the circuit board toward an operation member. A fit projection of the terminal fitment is fitted in a fit hole of the insulating casing. A silicone adhesive is applied to a board supporting rib of the insulating casing to the circuit board thereto.

Abstract: A high-voltage variable resistor includes a terminal fitment having an increased number of edge elements while being simplified in structure and down-sized. A circuit substrate which includes a circuit pattern having a plurality of electrodes and resistor elements formed thereon is received in a substrate receiving section of an insulating casing. The insulating casing is charged with insulating resin through an opening thereof to form an insulating resin layer on a rear surface of the circuit substrate. Terminal fitments are provided each of which includes a core holding section provided with three or more edge elements biting into a periphery of a core of a lead wire inserted thereinto. The edge elements each are formed between each adjacent two of three or more slits formed at a plate-like section of the terminal fitment so as to radially extend from a center thereof.

Abstract: A high-voltage variable resistor unit including a variable resistance circuit board and a fixed resistance circuit board, and capable of being down-sized and exhibiting satisfactory dielectric strength. A variable resistance circuit board which is provided on a front surface thereof with a variable resistance circuit pattern is received in a board receiving chamber of an insulating casing. A lid member made of an insulating resin material is arranged so as to close an opening of the board receiving chamber while keeping a front surface thereof facing a rear surface of the variable resistance circuit board. A fixed resistance circuit board is fixed on a rear surface of the lid member while keeping a rear surface thereof facing the rear surface of the lid member. A space for charging an insulating resin material therein is defined between a circuit board and the rear surface of the lid member.