US 12,280,818 B2
Steering column device
Naofumi Kawamura, Kishiwada (JP); Hiroaki Suzuki, Toyota (JP); Tetsuya Ebisu, Shijonawate (JP); Yuki Fujioka, Kashiba (JP); Tomonori Sugiura, Yamatokoriyama (JP); Kosuke Ito, Shiki-gun (JP); Takahiro Baito, Kosai (JP); Takao Nakaaki, Kashihara (JP); Yoshiaki Murakami, Hamamatsu (JP); and Kazuhisa Asakawa, Shiki-gun (JP)
Assigned to JTEKT CORPORATION, Kariya (JP); and JTEKT COLUMN SYSTEMS CORPORATION, Kosai (JP)
Appl. No. 18/572,077
Filed by JTEKT CORPORATION, Kariya (JP); and JTEKT COLUMN SYSTEMS CORPORATION, Kosai (JP)
PCT Filed Jun. 25, 2021, PCT No. PCT/JP2021/024113
§ 371(c)(1), (2) Date Dec. 19, 2023,
PCT Pub. No. WO2022/269897, PCT Pub. Date Dec. 29, 2022.
Prior Publication US 2024/0286667 A1, Aug. 29, 2024
Int. Cl. B62D 1/181 (2006.01); B62D 1/187 (2006.01)
CPC B62D 1/181 (2013.01) [B62D 1/187 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A steering column device comprising:
a lower tube that is configured to be attached to a vehicle body so as to be pivotable in an up-down direction of a vehicle;
a column shaft that is configured to receive attachment of a steering wheel of the vehicle;
an upper tube that rotatably supports the column shaft and that also is attached to the lower tube so as to be movable in a front-rear direction of the vehicle;
a motor for generating motor torque that is power for causing pivoting of the lower tube in the up-down direction and also movement of the upper tube in the front-rear direction;
a link mechanism that couples the lower tube and the upper tube so as to be capable of moving in conjunction; and
a power transmission mechanism that acts to transmit the motor torque to the link mechanism, wherein the link mechanism is configured to act to cause the pivoting of the lower tube in the up-down direction and the movement of the upper tube in the front-rear direction to be performed in conjunction, when the motor torque is transmitted to the link mechanism by the power transmission mechanism, wherein
the power transmission mechanism includes
a screw shaft that extends in the front-rear direction and that also rotates about an axial line extending in the front-rear direction under the motor torque, and
a feed nut that is coupled to the upper tube and that moves in the front-rear direction along the screw shaft by the screw shaft rotating; and
the feed nut is configured to, when moving in the front-rear direction, move the upper tube in the front-rear direction and also move the lower tube in the up-down direction via the link mechanism.