PROBLEM TO BE SOLVED: To provide an assembly body ensuring high airtightness and high liquid tightness between a first cylindrical portion and a second cylindrical portion irrespective of shapes of the first cylindrical portion and the second cylindrical portion.SOLUTION: A cross-sectional shape of a first cylindrical portion 41 perpendicular to an axis Ax1 is an incomplete round. A second cylindrical portion 42 is provided outside of the first cylindrical portion 41 so as to be coaxial with the first cylindrical portion 41, and formed so that a cross-sectional shape thereof perpendicular to an axis Ax2 corresponds to the cross-sectional shape of the first cylindrical portion 41 perpendicular to the axis Ax1. A seal member 43 is formed into an annular shape out of a material having an elastic modulus equal to or lower than a predetermined value, disposed between the first cylindrical portion 41 and the second cylindrical portion 42, and can hold airtightness or liquid tightness between the first cylindrical portion 41 and the second cylindrical portion 42. In a cross-section of the seal member 43 perpendicular to a circumferential direction thereof, a length of the seal member 43 in a direction parallel to an axis Ax3 is larger than a length of the seal member 43 in a direction perpendicular to the axis Ax3.
【課題】第1筒部および第2筒部の形状にかかわらず第1筒部と第2筒部との間の気密性および液密性が高い組付体を提供する。【解決手段】第1筒部41は、軸Ax1に対し垂直な断面の形状が非真円である。第2筒部42は、第1筒部41と同軸になるよう第1筒部41の外側に設けられ、軸Ax2に対し垂直な断面の形状が第1筒部41の軸Ax1に対し垂直な断面の形状に対応するよう形成されている。シール部材43は、弾性率が所定値以下の材料により環状に形成され、第1筒部41と第2筒部42との間に設けられ、第1筒部41と第2筒部42との間を気密または液密に保持可能である。シール部材43の周方向に対し垂直な断面は、シール部材43の軸Ax3に対し平行な方向の長さが、シール部材43の軸Ax3に対し垂直な方向の長さより大きい。【選択図】図4
ASSEMBLY BODY, PUMP, AND EVAPORATIVE LEAK CHECK SYSTEM USING THE SAME
組付体、ポンプ、および、これを用いたエバポリークチェックシステム
2015-07-23
Patent
Electronic Resource
Japanese
IPC: | F16J Kolben , PISTONS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS , Rotationskolben- oder Schwenkkolbenmaschinen [Kraft- und Arbeitsmaschinen] für Flüssigkeiten |
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