PUMP

• Main Authors: TAM NGUYEN THI THANH, LETHITHANH THAO, KATAOKA YOSHIHIRO, SHIZUKU OSAMICHI, YAHATA TAKANOBU
• Format: Patent
• Language: English; Japanese
• Published: 24.01.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

To provide a pump which can realize a highly reliable sealing structure in a simple manufacturing process.SOLUTION: One embodiment of a pump of the invention includes: a rotor which may rotate around a center axis; a stator which is positioned at the radial outer side of the rotor and encloses the rotor; a pump part connected to one axial side of the rotor; a support member which is positioned at the radial inner side of the stator and has a rotor housing part which houses the rotor therein; a motor housing which encloses the stator, the rotor, and the rotor housing part from the radial outer side; and a pump cover which is positioned at one axial side of the motor housing and the support member and covers the pump part. The pump cover has an annular first contact surface. The motor housing has a second contact surface which contacts with the first contact surface. The support member has a third contact surface which contacts with the first contact surface. The first contact surface is welded to the second contact surface and the third contact surface.SELECTED DRAWING: Figure 2 【課題】簡易な製造工程で信頼性が高い封止構造を実現できるポンプの提供。【解決手段】本発明のポンプの一つの態様は、中心軸線を中心として回転可能なロータと、ロータの径方向外側に位置しロータを囲むステータと、ロータの軸方向一方側に繋がるポンプ部と、ステータの径方向内側に位置しロータを内部に収容するロータ収容部を有する支持部材と、ステータ、ロータおよびロータ収容部を径方向外側から囲むモータハウジングと、モータハウジングおよび支持部材の軸方向一方側に位置しポンプ部を覆うポンプカバーと、を備える。ポンプカバーは、環状の第１接触面を有する。モータハウジングは、第１接触面に接触する第２接触面を有する。支持部材は、第１接触面に接触する第３接触面を有する。第１接触面は、第２接触面および第３接触面に溶着される。【選択図】図２