公开(公告)号：US20220149757A1

公开(公告)日：2022-05-12

申请号：US17609329

申请日：2020-06-25

Applicant: Multimatic Inc.

Inventor： Kelsey Dale Krushel ,  Tomasz Tadeusz Dominik

IPC: H02P3/02 ,  E05F15/63

Abstract: A vehicle door checker integrated with a power drive unit for an automobile door includes a direct current permanent magnet electric motor subject to cogging torque. The electric motor includes a central shaft. The vehicle door checker also includes a cogging torque increase device that is mounted to the central shaft externally of the motor. The cogging torque increase device includes pairs of oppositely magnetized permanent magnets that are mounted coaxially in a stator and rotor respectively about the motor shaft. The stator magnets and the rotor magnets shift into and out of alignment with each other as the shaft is rotated such that the motor is held in multiple discrete stable positions that correspond to check positions of an automobile door.

公开(公告)号：US11831268B2

公开(公告)日：2023-11-28

申请号：US17609329

申请日：2020-06-25

Applicant: Multimatic Inc.

Inventor： Kelsey Dale Krushel ,  Tomasz Tadeusz Dominik

IPC: E05F15/00 ,  H02P3/02 ,  E05F15/63

CPC classification number: H02P3/025 ,  E05F15/63 ,  E05Y2201/218 ,  E05Y2201/246 ,  E05Y2201/258 ,  E05Y2201/418 ,  E05Y2201/438 ,  E05Y2201/442 ,  E05Y2201/46 ,  E05Y2201/626 ,  E05Y2201/702 ,  E05Y2201/72 ,  E05Y2900/531

Abstract: A vehicle door checker integrated with a power drive unit for an automobile door includes a direct current permanent magnet electric motor subject to cogging torque. The electric motor includes a central shaft. The vehicle door checker also includes a cogging torque increase device that is mounted to the central shaft externally of the motor. The cogging torque increase device includes pairs of oppositely magnetized permanent magnets that are mounted coaxially in a stator and rotor respectively about the motor shaft. The stator magnets and the rotor magnets shift into and out of alignment with each other as the shaft is rotated such that the motor is held in multiple discrete stable positions that correspond to check positions of an automobile door.