Patent ID: 9718493
Date: 2017-08-01
CPC Classifications: B62D,F16D,F16F,F16H

Claim:
1. A torque transmission joint comprising: a drive-side transmission member supported by an end section of a drive shaft concentrically with the drive shaft; a driven-side transmission member supported by an end section of a driven shaft concentrically with the driven shaft and, arranged in series with the drive-side transmission member in an axial direction of the torque transmission joint; and a shock-absorbing member made of an elastic material and provided between the drive-side transmission member and the driven-side transmission member; the torque transmission joint transmitting torque between the end sections of the drive shaft and the driven shaft; wherein the drive-side transmission member comprises: a drive-side base section supported by the end section of the drive shaft, and having a surface facing the driven-side transmission member; and a plurality of drive-side arm sections provided on the surface of the drive-side base section intermittently in a circumferential direction of the torque transmission joint so as to protrude out in the axial direction, and each of the drive-side arm sections having paired side surfaces in the circumferential direction; the driven-side transmission member comprises: a driven-side base section supported by the end section of the driven shaft, and having a surface facing the drive-side transmission member; and a plurality of driven-side arm sections provided on the surface of the driven-side base section intermittently in the circumferential direction so as to protrude out in the axial direction, and each of the driven-side arm sections having paired side surfaces in the circumferential direction; the shock-absorbing member comprises combined held sections located at plural locations of the shock-absorbing member in the circumferential direction, the combined held sections comprising adjacent paired flat plate shaped held sections, inner-diameter side end sections of each of the paired flat plate shaped held sections being connected to each other directly or by an inner-diameter side cover section; and outer-diameter cover sections connecting outer-diameter side end sections of adjacent non-paired flat plate shaped held sections between the adjacent combined held sections, such that the held sections are connected on the inner-diameter side and the outer-diameter side alternately in the circumferential direction, and the shock-absorbing member being constructed so as to have a non-circular tube shape in a cross section thereof; the drive-side arm sections and the driven-side arm sections are arranged in an alternating sequence in the circumferential direction, and the held sections are respectively arranged between the side surfaces of the drive-side arm sections and the driven-side arm sections that are adjacent to each other in the circumferential direction; arm sections of one of the pluralities of arm sections being placed between the paired held sections, respectively, and arm sections of another of the pluralities of arm sections being places between the non-paired held sections, respectively, and outer circumferential surfaces of either of the drive-side arm sections or the driven-side arm sections are covered by the outer-diameter side cover sections which are exposed to an outside of the torque transmission joint; and the shock-absorbing member is formed from two or more shock-absorbing pieces, including at least two types of shock-absorbing pieces with different elasticities, and the shock-absorbing pieces have held pieces that form the held sections; and cover pieces that form the outer-diameter side cover sections, with the shock-absorbing pieces layered in the axial direction.