Coupling
AssigneeEagle Industry Co., Ltd.
InventorYasunari Furukawa
Life of this patent
Estimating the term…
Abstract
A flexible unit absorbing misalignment and transmitting torque from a driving shaft to a driven shaft is provided between a pair of flanges individually provided on each of the driving shaft side and the driven shaft side, both the driving shaft and the driven shaft being hollow. 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 is provided in the flexible unit. The flow of the cooling fluid cooling a driving source driving and rotating the driving shaft from the inside is created in the circulation space. A seal portion seals between the circulation space and an outside space to prevent leakage of the cooling fluid from the circulation space to the outside space.
Claims4
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.
Dependencies are inferred from the claim text.