THERMOSTAT, WATER COOLING DEVICE, WATER COOLING ENGINE, AND OUTBOARD ENGINE

• Main Authors: ISOZAKI KOICHI, SARUWATARI KIMITAKA, MAEKAWA MASAYA
• Format: Patent
• Language: English; Japanese
• Published: 07.05.2015
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; DEVICES FOR VENTING OR AERATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To provide a thermostat capable of preventing a frame of the thermostat from contacting with a housing inner surface forming a coolant passage.SOLUTION: A thermostat 36 includes: an annular flange 38 which is enclosed by a cylindrical large diameter part 59b of an inner surface 59 and extends in a radius direction R; and a frame 39 extending from the flange 38 in an axial direction X. The thermostat 36 includes a seal member 40 which seals an area between the flange 38 and the inner surface 59. The seal member 40 includes: an annular outer peripheral part 61 which is sandwiched between the inner surface 59 and a thermostat cover 58 in the axial direction X at the inner side of the large diameter part 59b; and multiple protruding parts 62 which extend from the outer peripheral part 61 to the outer side in the radial direction R toward the large diameter part 59b. The thermostat 36 is disposed in a housing 37 which forms a part of a coolant passage 23 with the cylindrical inner surface 59 and opens and closes the coolant passage 23 according to a temperature of a coolant in the coolant passage 23. 【課題】冷却水通路を形成するハウジング内面にサーモスタットのフレームが接触することを防止できるサーモスタットを提供すること。【解決手段】サーモスタット３６は、内面５９の筒状の大径部５９ｂによって取り囲まれる径方向Ｒに延びる環状のフランジ３８と、フランジ３８から軸方向Ｘに延びるフレーム３９とを備える。サーモスタット３６は、さらに、フランジ３８と内面５９との間を密閉するシール部材４０と、を備える。シール部材４０は、大径部５９ｂの内側で内面５９とサーモスタットカバー５８とによって軸方向Ｘに挟まれる環状の外周部６１と、大径部５９ｂに向かって外周部６１から径方向Ｒ外方に延びる複数の突出部６２とを含む。サーモスタット３６は、筒状の内面５９によって冷却水通路２３の一部を形成するハウジング３７内に配置され、冷却水通路２３内の冷却水の温度に応じて冷却水通路２３を開閉する。【選択図】図３