| 摘要 |
The invention relates to an electromagnetic actuator to be mounted in a haptic-feedback control device (1) for transmitting a haptic feedback to a user, wherein said actuator (5a, 5b) comprises a fixed portion (9) and a mobile portion (11), said fixed (9) and mobile (11) portions forming a magnetic circuit defining at least one air gap (e) between said fixed (9) and mobile (11) portions. According to the invention, the actuator (5a, 5b) further comprises: at least two permanent magnets (23a, 23b) respectively generating first (B1) and second (B2) opposite magnetic fields; and an electric coil (25) provided between said magnets (23a, 23b) such that the winding of said coil (25) extends successively through said first (B1) and second (B2) opposite magnetic fields so that, when a current flows through said coil (25), the actuator (5a, 5b) is submitted to a resulting actuation force in a common driving direction for translating said mobile part (11) in said air gap (e). |
| 主权项 |
1. An electromagnetic actuator intended to be mounted in a control device with haptic feedback so as to transmit a haptic feedback to a user, wherein the control device comprises: a plate that carries a tactile-surface sensor that is configured to detect a press on a tactile surface by the user; and a chassis comprising at least one part, said actuator comprising:
a fixed part and a mobile part, said fixed and mobile parts forming a magnetic circuit defining at least one air gap between said fixed and mobile parts; at least two permanent magnets generating respectively a first magnetic field and a second magnetic field opposite to the first magnetic field; and an electric coil disposed between said magnets such that a winding of said coil successively crosses said first and second opposite magnetic fields so that when said coil is traversed by a current, said actuator is subjected to a resultant actuation force along a common drive direction to drive said mobile part in translation in said air gap, wherein the at least one part is oriented parallel to the plate, and wherein the actuator is linked to the plate such that when the mobile part is driven in translation in the air gap as a result of the tactile-surface sensor detecting a press in the tactile surface by the user, the haptic feedback is transmitted to the user.
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