SCROLL COMPRESSOR

• Main Authors: YOSUKE YOSHINOBU, KAWAMOTO TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 26.10.2017
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

PROBLEM TO BE SOLVED: To provide a scroll compressor having high reliability by sufficiently securing the sliding length of a key part of an Oldham joint.SOLUTION: A scroll compressor includes: a movable scroll having a first key groove; a stationary member having a second key groove; and an Oldham joint between the movable scroll and the stationary member. The Oldham joint is relatively movable with respect to the stationary member and the movable scroll along a first axis and a second axis respectively. The Oldham joint has: an annular body part; two pairs of first key parts screwed in the first key groove; and a pair of second key parts screwed in the second key groove. A first inner peripheral edge which is the inner peripheral edge of the annular body part between the two first key parts on the same side with respect to the first axis has an arc shape. A first horizontal surface of the annular body part has an entering surface which goes further into the gravity center side of the Oldham joint than a virtual extension line of the arc of the first inner peripheral edge. The first key part has an entering part protruding from the entering surface.SELECTED DRAWING: Figure 8 【課題】本発明に係るスクロール圧縮機は、オルダム継手のキー部の摺動長さを十分に確保することで、高い信頼性を有する。【解決手段】スクロール圧縮機は、第１キー溝を有する可動スクロールと、第２キー溝を有する静止部材と、可動スクロールと静止部材との間のオルダム継手とを備える。オルダム継手は、第１軸および第２軸に沿って、それぞれ、静止部材および可動スクロールに対して相対的に移動可能である。オルダム継手は、環状本体部と、第１キー溝に嵌め込まれる２対の第１キー部と、第２キー溝に嵌め込まれる１対の第２キー部とを有する。第１軸に対して同じ側にある２つの第１キー部の間における環状本体部の内周縁である第１内周縁は、円弧の形状を有する。環状本体部の第１水平面は、第１内周縁の円弧の仮想延長線よりもオルダム継手の重心側に入り込んだ入り込み面を有する。第１キー部は、入り込み面から突出している入り込み部を有する。【選択図】図８