公开(公告)号：US20190093711A1

公开(公告)日：2019-03-28

申请号：US15536649

申请日：2015-03-02

Applicant: IONES CO., LTD.

Inventor： MUN KI LEE ,  JAE DEOK KO ,  KEUM MO KIM ,  SOON JONG SONG ,  JI MAN LEE ,  YOUNG WON CHOI ,  JEONG CHAN LEE ,  JIN HO PARK ,  BYUNG GI KIM

IPC: F16D9/10 ,  F16D3/78 ,  F16C3/02

Abstract: A power transmission shaft performs a fuse-like function when excessive torque is applied to a power input side. The power transmission shaft includes: a main shaft connected to a power device; flanges connected to the power device and provided at both sides of the main shaft; and a flexible coupling extending in the radial direction of the main shaft. The power transmission shaft includes a power shutoff unit which shuts off power by breaking the main shaft or the flanges when torque greater than a predetermined level is applied. When excessive torque is applied to the power input side, the power transmission shaft performs a fuse-like function with respect to the excessive torque, thereby enhancing safety, preventing sparks from occurring at the time of the breakage, facilitating the production thereof, and effectively preventing vibration while sufficiently supporting the speed or load in the event of a high rotation rate.

公开(公告)号：US20170343051A1

公开(公告)日：2017-11-30

申请号：US15536652

申请日：2015-03-03

Applicant: IONES CO., LTD.

Inventor： MUN KI LEE ,  JAE DEOK KO ,  KEUM MO KIM ,  SOON JONG SONG ,  JI MAN LEE ,  YOUNG WON CHOI ,  JEONG CHAN LEE ,  JIN HO PARK ,  BYUNG GI KIM

IPC: F16D3/78 ,  F16C3/02

CPC classification number: F16D3/78 ,  F16C3/02 ,  F16C2326/06 ,  F16C2326/43 ,  F16D3/005 ,  F16D3/72 ,  Y10T403/453

Abstract: A power transmission shaft which alleviates phenomenon in which stress is concentrated on a specific portion of a diaphragm to improve fatigue life span. The power transmission shaft connects a power apparatus and includes a flexible coupling, which is configured by a hub unit positioned inside in a radial direction. A rim unit is positioned outside in a radial direction of the hub unit. A flexible diaphragm unit is positioned between the hub unit and the rim unit. The thickness in the axial direction of the flexible diaphragm unit, from the hub unit toward the rim unit, becomes thinner then thicker to have a minimum thickness interval. The flexible diaphragm unit has a contoured first side on one side in the axial direction and a contoured second side on the other side. The first side has a first inflection point and the second side has a second inflection point.