Invention Publication
- Patent Title: BRAKE DEVICE, ARRANGEMENT FOR CONTROLLING MOVEMENTS OF ACCESS MEMBER, AND ACCESS MEMBER SYSTEM
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Application No.: US18263006Application Date: 2022-01-12
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Publication No.: US20240084634A1Publication Date: 2024-03-14
- Inventor: Bernt Arbegard
- Applicant: ASSA ABLOY AB
- Applicant Address: SE Stockholm
- Assignee: ASSA ABLOY AB
- Current Assignee: ASSA ABLOY AB
- Current Assignee Address: SE Stockholm
- Priority: SE 501002 2021.01.28
- International Application: PCT/EP2022/050511 2022.01.12
- Date entered country: 2023-07-26
- Main IPC: E05F5/00
- IPC: E05F5/00 ; E05F3/22 ; F16D63/00 ; F16D65/16 ; H02K7/18 ; H02K49/04
Abstract:
A brake device (12a, 12b) comprising a hard magnet (20); a soft magnet (22) configured to switch polarity between a first polarity and a second polarity when being subjected to a magnetic field and configured to maintain the polarity when the magnetic field is removed; an electric coil (24) located around the soft magnet; an electric control system (16) configured to apply a current pulse to the electric coil to generate the magnetic field for changing the polarization of the soft magnet; and a brake element (18) comprising a magnetic target section (28), the brake element being arranged to move to a released position (40) when the soft magnet adopts the first polarity, and arranged to move to a braking position (64) due to a magnetic field generated by the hard magnet and the soft magnet in combination and acting on the magnetic target section when the soft magnet adopts the second polarity.
Information query
