Nsk Corporation

Yuka Kaneko

Daisuke Gunji

Yasuyuki Matsuda

Tetsu Takehara

Kazutaka Tanaka

Hiroyasu Yoshioka

Tomoharu Saito

Masafumi Hikida

Hiroki Nishii

Kota Fukuda

Yuya Daikoku

Toshirou Toyoda

Tohru Ueda

Tooru Ueda

The reverse input shutoff clutch includes: an input member, an output member coaxially arranged with the input member, a pressed member having a pressed surface, and an engaging element. The engaging element, when rotational torque is inputted to the input member, moves in a direction away from the pressed surface due to engagement with the input member and transmits the rotational torque to the output member, and when rotational torque is reversely inputted to the output member, moves in a direction toward the pressed surface due to engagement with the output member, and prevents or suppresses relative rotation between the output member and the pressed member.

Reverse input shutoff clutch, electric valve timing adjustment device, variable compression ratio device, and electric power steering device

A rotation transmission device having a high torque measurement resolution is provided. The rotation transmission device is provided with: a rotary-shaft unit () having a first and second rotary shaft () combined so as to be coaxial and such that the end sections thereof can rotate relative to each other and a torsion bar () that is provided on the inner-diameter side of the first and second rotary shafts so as to be coaxial therewith, has one end section connected to the first rotary shaft (), and has the other end section connected to the second rotary shaft (); a first gear () fastened to the outer peripheral surface of the first rotary shaft (); a second gear () fastened to the outer peripheral surface of the second rotary shaft (); a coupling shaft () provided on the inner-diameter side of the torsion bar () so as to be coaxial therewith, having one end section connected to one rotary shaft (), and having the other end section protruding from an end of the torsion bar () in the axial direction; a first encoder disposed and fixed on the other end of the coupling shaft () so as to be coaxial with the first rotary shaft () and having a first detected section (); a second encoder fastened on the other end of the second rotary shaft () so as to be close to the first encoder and having a second detected section (); and a sensor unit having at least one sensor () that faces the first and second detected sections ().

Rotation transmission device

In order to implement a structure capable of improving the resolution of torque measurement while preventing the plastic deformation of a torsion bar (), an input-side stopper () having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an input-side rotating body () that includes an input shaft () and an input gear (), and an output-side stopper () having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an output-side rotating body () that includes an output shaft () and an output gear (). The input-side stopper () and the output-side stopper () are combined so as to be engaged to be able to transmit torque only when the torsional angle within the elastic range of the torsion bar () reaches a predetermined amount.

Torque measurement device-equipped rotation transmission apparatus

Growing community of inventors

Fujisawa, Japan

Yuka Kaneko