Vacuum pump

• Main Authors: YAZAWA HIROSHI, EBATO AKIHIRO, ODA NOBUYOSHI, TSUSHIMA MASANORI, ISHII TOSHIHIRO, TAKASAKI YUSUKE
• Format: Patent
• Language: Chinese; English
• Published: 18.03.2022
• 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

Provided is a vacuum pump capable of suppressing an oil supply pipe from remaining on the engine side when the vacuum pump is detached from the engine. A vacuum pump (1) is provided with: an oil supply pipe (2) in which a lubricating oil inlet (12) is formed at one end (10) and a lubricating oil outlet (20) is formed at the other end (18); a rotor (4) including a shaft portion (28) in which a recess (26) into which the other end portion (18) of the oil supply pipe (2) can be inserted is formed; a coupling (6) that engages with the shaft section (28); and a bush (8) configured so as to press the coupling (6), fit into the inner peripheral surface (30) of the recess (26), and restrict the separation of the other end (18) of the oil supply pipe (2) from the recess (26). 提供一种真空泵，当从发动机拆卸时，能够抑制供油管留在发动机侧。真空泵(1)具备：供油管(2)，其在一端部(10)形成有润滑油的入口(12)，并在另一端部(18)形成有润滑油的出口(20)；转子(4)，其包含轴部(28)，该轴部(28)形成有可供供油管(2)的另一端部(18)插入的凹部(26)；联轴器(6)，其卡合于轴部(28)；以及衬套(8)，其构成为按压联轴器(6)并且嵌合于凹部(26)的内周面(30)，并限制供油管(2)的另一端部(18)从凹部(26)脱离。