Patent ID: 11879506
Assignee: EAGLE INDUSTRY CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A coupling comprising:
a pair of connection members individually provided on each of a side of a driving shaft and a side of a driven shaft, both the driving shaft and the driven shaft being hollow;
a torque transmission portion placed between the pair of connection members, absorbing misalignment, and transmitting torque from the driving shaft to the driven shaft;
a communication passage letting hollow regions of the driving shaft and the driven shaft communicate with each other to form a circulation space for a cooling fluid; and
a seal portion sealing between the circulation space and an outside space,
wherein the torque transmission portion includes:
a center tube; and
a pair of diaphragms each having an inner diameter portion integrally fixed to both ends of the center tube and an outer diameter portion tightened and fixed to each of the pair of connection members and provided with a deflection portion between the inner diameter portion and the outer diameter portion,
the communication passage is formed by an inner hole of the center tube and an opening provided in each of the diaphragms, and
the seal portion includes an endless groove provided in each of joint surfaces between the outer diameter portions of the pair of diaphragms and the pair of connection members and an O-ring housed in each of the grooves.