Tdk Corporation

Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Tsutomu Hatakeyama

Tokuhiko Handa

Masayuki Ikemoto

Keiichi Kaneshige

Hisanao Tosaka

Masashi Matsumoto

Akiya Shichijoh

Kunio Mogi

Noriaki Hirano

Hirokazu Satoh

Tetsushi Mizutani

Satoru Shiraki

Tsukasa Kon

A stator for a rotary electric machine includes a stator core, three-phase coils, and a neutral point connection conductor. The three-phase coils are wound around the stator core. The neutral point connection conductor is connected to each of the three-phase coils. The neutral point connection conductor includes a linear conductor that is bent. The linear conductor includes two end portions and an overlapping portion in which the conductor is folded back and doubled up. One of the two end portions is connected to one-phase coil of the three-phase coils. The other of the two end portions is connected to another-phase coil of the three-phase coils. The overlapping portion is connected to the remaining-phase coil of the three-phase coils.

Stator of rotary electric machine

A thermistor includes a case having a bottom section at one end and an opening section at the other end, a thermistor element housed in the case, a conducting wire housed in the case and connected to the thermistor element, and a lead wire connected to the conducting wire. The lead wire has a first portion including an insulating coating, and a second portion connected to the conducting wire and exposed from the insulating coating. A resin is filled up to a position away from an end edge of the opening section toward the bottom section so as to enclose at least the thermistor element, the conducting wire, and the second portion. The first portion is guided out of the resin to the outside of the case. An inner peripheral surface of the opening section is curved so as to increase an opening area of the opening section.

Thermistor including a thermistor element and a case housing the thermistor

An object is to provide a PTC element capable of preventing lead terminals from delaminating from an element body. This PTC elementis a PTC element comprising an element bodyin which an electroconductive filler is dispersed in a crystalline polymer, and a pair of terminal electrodesthermocompression-bonded with the element bodyin between, wherein each of the pair of terminal electrodeshas an overlapping regionoverlapping with the element bodyand a nonoverlapping regionnot overlapping with the element bodyand wherein the nonoverlapping regionof each of the pair of terminal electrodesis constructed of a succession of a wide portiona width of which is large across a direction in which the terminal electrodeextends from the element bodyand a narrow portiona width of which is smaller than the width of the wide portion

PTC element

A method of manufacturing a PTC element comprising a pair of lead terminals bonded together by thermocompression with a matrix held therebetween comprises a matrix preparing step of preparing a matrix constructed by dispersing a conductive filler into a crystalline polymer; a terminal preparing step of preparing a pair of lead terminals holding the matrix therebetween, a surface of each lead terminal facing the matrix being formed with a plurality of anchor protrusions separated from each other; a flattening step of flattening the anchor protrusions formed in respective nonoverlapping areas in the pair of lead terminals kept from overlapping the matrix; and a thermocompression bonding step of holding the matrix between respective overlapping areas in the pair of lead terminals overlapping the matrix, and securing the pair of lead terminals and the matrix together by thermocompression bonding.

PTC element and production process thereof

Growing community of inventors

Toyota, Japan

Tsutomu Hatakeyama