| 主权项 |
1. A torque-limiting coupling for connecting coaxial, first and second rotating shafts, the coupling comprising:
a first connecting part on an end of the first shaft, a second connecting part on an end of the second shaft, and an interconnector which joins to the first connecting part at a first engagement formation, and which joins to the second connecting part at a second engagement formation; wherein the first engagement formation is a threaded engagement formation which threadingly joins the interconnector to the first connecting part, and the second engagement formation is configured to resist rotational movement of the interconnector relative to the second connecting part, but to allow movement of the interconnector in the axial direction of the shafts, wherein the interconnector is configured to be elastically deformed when joined to the first connecting part and the second connecting part, the elastic deformation exerting a predetermined radial pressure on the threaded engagement formation; whereby, when a torque transmitted by the shafts exceeds a predetermined value, the interconnector rotates relative to the first connecting part at the threaded engagement formation, the resistance to rotational movement relative to the second connecting part causing the interconnector to move in an axial direction of the shafts and come out of engagement with the first and/or the second connecting part. |
