VANE PUMP

• Main Authors: SUGIHARA MASAMICHI, KONDO HIROTOSHI, NAKAGAWA SATOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2017
• 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 improve startability of a vane pump.SOLUTION: A vane pump 100 includes: a rotor 2 connected to a driving shaft 1; plural vanes 3 which are provided so as to reciprocate relative to the rotor 2; a cam ring 4 having an inner peripheral surface 4a on which tips of the vanes 3 slidably move as the rotor 2 rotates; a pump chamber 6 defined by the rotor 2, the cam ring 4, and a pair of adjacent vanes 3; a pump body 10 which houses the cam ring 4; a pump cover 11 which seals the pump body 10; a suction passage 30 which is formed over the pump body 10 and the pump cover 11 to guide a hydraulic oil to the pump chamber 6; and an air pocket 40 which has a bottom part 40a, opens at the suction passage 30, and is formed so as to extend to an upper side in a vertical direction.SELECTED DRAWING: Figure 2 【課題】ベーンポンプの始動性を向上させる。【解決手段】ベーンポンプ１００は、駆動軸１に連結されたロータ２と、ロータ２に対して往復動自在に設けられる複数のベーン３と、ロータ２の回転に伴ってベーン３の先端が摺動する内周面４ａを有するカムリング４と、ロータ２とカムリング４と一対の隣り合うベーン３とによって区画されるポンプ室６と、カムリング４を収容するポンプボディ１０と、ポンプボディ１０を封止するポンプカバー１１と、ポンプボディ１０とポンプカバー１１とにわたって形成されポンプ室６に作動油を導く吸込通路３０と、底部４０ａを有すると共に吸込通路３０に開口し鉛直方向の上方に延びるように形成されるエアポケット４０と、を備える。【選択図】図２