Toyota Jidosha Kabushiki Kaisha

Meiwa E-tec Co., Ltd.

Shingo Nakamura

Yuichi Furukawa

Fumio Kawahara

Yuji Okada

Tetsuo Hori

Atsushi Ota

Hidehiko Kadono

Seizi Uda

Yutaro Oguma

Takumi Samejima

Yutaka Ueno

A differential gear device including: a differential casing; and a pair of side gears which are disposed within the differential casing such that the side gears are rotatable about the above-indicated axis and are axially opposed to each other, and such that a rotary motion of the differential casing about the above-indicated axis is transmitted to the side gears through at least one pinion gear, the differential casing having a pair of bearing portions which extend from its respective inner surfaces toward back surfaces of the respective side gears, which are coaxial with said axis and which have respective annular seating surfaces which receive axial loads from the side gears, and wherein each of the pair of bearing portions has a protrusion extending from an outer circumference of corresponding one of the annular seating surfaces in a radially outward direction of the annular seating surface.

Differential gear device

A technique for an infrared radiation thermometer used for thermography that detects measurement abnormality of an infrared radiation thermometer and estimates the causes of the measurement abnormality such as contamination of an objective lens and a malfunction in a mechanism section of the infrared radiation thermometer.

Abnormal measurement detection device and method for infrared radiation thermometer

A technique for an infrared radiation thermometer used for thermography detects measurement abnormality of the infrared radiation thermometer and estimates the causes of the measurement abnormality such as contamination of an objective lens and a malfunction in a mechanism section of the infrared radiation thermometer. The measurement abnormality detector has a dummy lensplaced in the periphery of the objective lensof the thermometerso as to be at a position and in an attitude that are more susceptible to contamination than the objective lens, a laser displacement meterfor projecting light to the dummy lensat each predetermined time or at a predetermined timing, receiving the light reflected by the dummy lens, and measuring the quantity of the received light, and determination meansfor calculating the attenuation rate of the projected light on the basis of the quantity of the received light measured by the laser displacement meter, estimating the degree of contamination of the dummy lenson the basis of the calculated attenuation rate, and judging, on the basis of the degree of contamination of the dummy lens, the necessity of warning for contamination of the objective lensand measurement abnormality of the thermometer

Feature points () in the heat image () of a casting die () are extracted and a predetermined geometrical conversion processing is performed on the heat image () such that the feature points are superimposed on the reference feature points () set in a reference heat image () picked up previously to generate a corrected heat image (). A difference image () is generated by superimposing the corrected heat image () and the reference heat image () such that the corrected feature points () in the corrected heat image () is superimposed on the corresponding reference feature points (). With such an arrangement, a highly reliable difference image can be generated even when the imaging field of vision slips off among a plurality of heat images.

Temperature measuring device and temperature measuring method

A casting mold includes a cavity formed therein, and an auxiliary mold projecting into the cavity. The auxiliary mold forms a concave portion in a cast product, and it exhibits a thermal expansion coefficient being more than a thermal expansion coefficient exhibited by a molten metal to be charged into the cavity. Hence, the auxiliary mold greatly expands thermally during casting, and it keeps the expanded state during the solidification of the molten metal. Accordingly, the casting mold can prevent the casting defects resulting from the shrinkage cavities from arising in the resulting cast products. All in all, the casting mold can obviate to give the auxiliary mold a tapered configuration, and it can reduce the after-casting machining allowance to be provided in the resulting concave portion.

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Toyota, Japan

Shingo Nakamura