SHIBAURA ELECTRONICS CO., LTD.

A temperature sensor includes: a sensor element including a thermosensitive body configured to detect a temperature of a measurement object, and a protector that internally houses the thermosensitive body; and an elastic bracket that holds the protector and is configured to apply elastic force to the protector toward the measurement object. The elastic bracket includes a first spring piece holding the protector, a second spring piece facing the first spring piece, and a connection piece of the first spring piece and the second spring piece.

Positional deviation of a temperature sensor from a prescribed position of a coil due to external force such as vibration is prevented. A temperature sensor for detecting a temperature of a coil provided in a stator of a rotary electric machine, includes: a sensor element including a thermosensitive body, an electric wire electrically connected to the thermosensitive body, and a covering body made of an elastic material and covering a part of the electric wire and the thermosensitive body; and a bracket including a first holding portion configured to hold the covering body. The bracket includes a predetermined rotation axis, and the covering body is configured to be pressable against the coil by rotation operation of the bracket in a predetermined rotation direction.

A temperature sensor includes: a thermosensitive element including a thermosensitive body, an extension wire having one end electrically connected to the thermosensitive body, and a sealing body made of an insulation material and covering a part of the extension wire and the thermosensitive body; a lead wire electrically connected to another end of the extension wire; and a covering body made of a resin and having a long shape and a rectangular cross-section, the covering body covering a part of the lead wire and the thermosensitive element. In a lateral direction of the covering body, a dimension of a region of the covering body covering the thermosensitive element is set less than a dimension of a region of the covering body covering the lead wire.

A temperature sensor includes a temperature measurement unit that is configured to measure a temperature of a measurement object, the temperature measurement unit having a heat-sensitive body and a pair of electric wires electrically connected to the heat-sensitive body; a holding portion that holds the temperature measurement unit and is composed of a single member; and an elastic portion that applies an elastic force to the temperature measurement unit toward the measurement object, the elastic portion being provided between the temperature measurement unit and the holding portion. The electric wires of the temperature measurement unit are pulled out from the holding portion along a first direction in which the elastic force is applied.

A temperature sensor eliminates the necessity of removing a filler in order to check the condition of a thermosensitive body, while retaining the position of the thermosensitive body relative to a protective tube. The temperature sensor includes: a sensor element including the thermosensitive body, a protective layer made of glass and surrounding the thermosensitive body, and a lead wire electrically connected to the thermosensitive body; a protector including the protective tube in which the thermosensitive body is housed; and a retainer mechanically retaining a position of the thermosensitive body relative to the protective tube inside the protective tube.

A thermistor sintered body has a thickness in a range of 1 μm to 100 μm and an area in a range of 1 mm 2 to 10 mm 2 , and is composed of a single body of a sintered body having a composition of NiMn 2 O 4 . This thermistor sintered body can be manufactured by a first step of dropping a raw material liquid RL onto a surface of a substrate rotatably supported, a second step of rotating the substrate with the dropped raw material liquid RL and spreading the raw material liquid RL, a third step of forming a sintered body having the composition of NiMn 2 O 4 on the surface of the substrate by heating and holding the raw material liquid RL and the substrate on which the raw material liquid RL has been placed, and a fourth step of separating the sintered body from the substrate.

A temperature sensor element includes: an element main body including a heat sensitive body including a thermistor sintered body of which the electrical characteristics change with temperature, and a pair of lead wires that is connected to the heat sensitive body through electrodes; and a protective layer that protects the heat sensitive body. The protective layer has an inner protective layer covering the heat sensitive body and an outer protective layer covering the outer side of the inner protective layer. The inner protective layer is formed of an aggregate of particles that are chemically stable with respect to the thermistor sintered body and made of non-metal.

A temperature sensor that sufficiently has heat insulation property and the pressing force to a temperature measurement object to a degree allowing a ceramic paper to be substituted, and that has a good responsiveness, and a temperature detection device and an image formation device that include the temperature sensor. The temperature sensor is disposed so as to maintain an abutting state with a temperature measurement object, the temperature sensor including: a thermosensitive element configured to detect the temperature of the temperature measurement object; a heat collection member configured to pressurize the temperature measurement object and to be thermally coupled with the thermosensitive element; and a holding member supporting the heat collection member and forming a space that faces the heat collection member.

Provided is a thermistor sintered body which stably provides a desired B constant even if a composition deviation of an additive element has occurred. The thermistor sintered body-includes a Y 2 O 3 phase and a YMnO 3 phase, wherein a chemical composition of Cr, Mn, Ca and Y excluding oxygen includes Cr: 3 mol % or less (while including 0%), Mn: 5 to 18 mol %, Ca: 1 to 18 mol %, and Sr: 1 to 25 mol %, with the balance being unavoidable impurities and Y. In the thermistor sintered body, Ca and Sr may be dissolved in the YMnO 3 phase.

[Solution] A temperature sensor element 1 according to the present invention includes: a heat sensitive body 11 of which electric resistance changes according to a temperature; a first coating layer 20 that covers a periphery of the heat sensitive body 11 ; a pair of lead-out wires 15 and 15 that are connected to the heat sensitive body 11 and also are led out in penetration through the first coating layer 20 , toward a rear end side; a second coating layer 25 that covers a periphery of the pair of lead-out wires 15 and 15 which are led out in penetration through the first coating layer 20 ; and a third coating layer 30 that covers peripheries of the first coating layer 20 and the second coating layers 25 and 27 . In the temperature sensor element 1 , the second coating layer 25 is formed from a mixture of an oxygen-supplying oxide and glass.