OIL TEMPERATURE RAISING DEVICE

• Main Authors: INOUE SATOSHI, ATSUSHI KOTARO, NIINUMA TOSHIKI, YUZAWA YOSHIAKI, AOKI MITSUO
• Format: Patent
• Language: English; Japanese
• Published: 22.11.2018
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide an oil temperature raising device capable of enhancing temperature raising of an oil.SOLUTION: A temperature raising device 1 includes a driven gear 5 housed in a case 9 and disposed on a rotary shaft 6, a frictional material 11 disposed on an outer race 7a of a bearing 7, a disc spring 10 disposed on a side portion of the driven gear 5, and kept into contact with the frictional material 11 when a space between the side portion and the frictional material 11 is a prescribed space or less, and a shape memory alloy 12 expanded at least in an axial direction of the rotary shaft 6 at a prescribed temperature or more. The driven gear 5 is a helical gear, thrust force of the driven gear 5 is generated in a direction of a bearing 7 side in coast traveling of an electric automobile, the case 9 has a coefficient of linear expansion larger than that of the rotary shaft 6, the case 9 is expanded more than the rotary shaft 6 in the axial direction of the rotary shaft 6 in accompany with temperature raising, and the space between the side portion of the driven gear 5 and the frictional material 11 becomes larger than the prescribed space by the shape memory alloy 12 at the prescribed temperature or more.SELECTED DRAWING: Figure 1 【課題】オイルの昇温を促進させることが可能なオイルの昇温装置を提供する。【解決手段】昇温装置１は、ケース９に収容され、回転軸６に設けられるドリブンギヤ５と、ベアリング７のアウターレース７ａに設けられる摩擦材１１と、ドリブンギヤ５の側部に設けられ、この側部と摩擦材１１との間隔が所定の間隔以下のときに摩擦材１１に接触する皿ばね１０と、所定の温度以上になると少なくとも回転軸６の軸方向に大きくなる形状記憶合金１２とを備え、ドリブンギヤ５がヘリカルギヤであり、ドリブンギヤ５のスラスト力が電気自動車のコースト走行時にベアリング７側の方向に発生し、ケース９が回転軸６よりも大きい線膨張係数を有し、温度の上昇に伴って回転軸６の軸方向においてケース９が回転軸６よりも膨張し、所定の温度以上になると形状記憶合金１２によってドリブンギヤ５の側部と摩擦材１１との間隔が所定の間隔よりも大きくなる。【選択図】 図１