US 12,293,873 B2
Input device
Tatsuhiro Tomiyama, Miyagi (JP); Kazunari Takahashi, Miyagi (JP); Yuki Ikezoe, Miyagi (JP); Takenori Takahashi, Miyagi (JP); Misuzu Suto, Miyagi (JP); Tomoya Endo, Miyagi (JP); and Takeshi Shirasaka, Miyagi (JP)
Assigned to ALPS ALPINE CO., LTD., Tokyo (JP)
Filed by ALPS ALPINE CO., LTD., Tokyo (JP)
Filed on Feb. 5, 2024, as Appl. No. 18/432,409.
Application 18/432,409 is a continuation of application No. PCT/JP2022/010994, filed on Mar. 11, 2022.
Claims priority of application No. 2021-138379 (JP), filed on Aug. 26, 2021.
Prior Publication US 2024/0177906 A1, May 30, 2024
Int. Cl. H01F 7/20 (2006.01); H01F 7/02 (2006.01)
CPC H01F 7/20 (2013.01) [H01F 7/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An input device which is capable of imparting a magnetic operational reaction force, comprising:
a stationary member;
a magnetic member fixed to the stationary member;
a movable member at least partially housed in the stationary member to which the magnetic member is fixed; and
a driving device including a magnet fixed to the movable member and coils fixed to the stationary member, configured to move the movable member in a first direction relative to the stationary member,
wherein the magnet is magnetized along a second direction perpendicular to the first direction,
wherein the coils have bundles of turns constituted by conductive wires, and the conductive wires in the bundles of turns extend along a third direction perpendicular to each of the first direction and the second direction, and the conducting wires are juxtaposed along the first direction,
wherein the magnetic member is positioned so as to generate an attraction force between the magnet and the magnetic member which acts to bring the movable member closer to a predetermined position from a position deviated from the predetermined position,
wherein the first direction is an up-and-down direction,
wherein the second direction is a left-and-right direction,
wherein the third direction is a front-and-back direction,
wherein a lower end of the magnetic member is positioned above a lower end of the magnet when the movable member is displaced downward,
wherein the stationary member has a stopper portion that contacts the movable member when the movable member is displaced downward by a predetermined distance, and
wherein the stopper portion is provided at a position contacted by the movable member after the magnetic operational reaction force, which increases as the movable member is displaced downward, has exceeded a maximum value and has started to decrease.