PROBLEM TO BE SOLVED: To obtain a torque transmission joint which can improve efficiency of assembling work and a freedom of adjustment of torque transmission characteristics.SOLUTION: A torque transmission joint 15a is constituted of a drive-side transmission member 16a fixed to an output shaft of an electric motor, a driven-side transmission member 17a fixed to a base end part of a worm shaft, and a buffer member 18a arranged between both the transmission members. The buffer member 18a is constituted by laminating three buffer pieces 28, 28a in an axial direction. A pair of the buffer pieces 28 arranged at both sides in the axial direction is formed of synthetic resins, and the buffer piece 28a arranged at a center in the axial direction are formed of rubber, integrally, respectively. In a state that the three buffer pieces 28, 28a are laminated in the axial direction, buffer bodies 24a are constituted of outside buffer elements 29 arranged at the buffer pieces 28 at both the sides in the axial direction, and an intermediate buffer element 41 arranged at the buffer piece 28a at the center in the axial direction, and the respective buffer bodies 24a are interposed in a portion between teeth parts 20a, 23a.SELECTED DRAWING: Figure 3
【課題】組立作業効率、並びに、トルク伝達特性の調整の自由度を向上できるトルク伝達用継手を実現する。【解決手段】トルク伝達用継手15aを、電動モータの出力軸に固定する駆動側伝達部材16aと、ウォーム軸の基端部に固定する被駆動側伝達部材17aと、これら両伝達部材同士の間に配置する緩衝部材18aとから構成する。この緩衝部材18aを、3つの緩衝片28、28aを軸方向に積層して構成すると共に、軸方向両側に設ける1対の緩衝片28を合成樹脂により、軸方向中央に設ける緩衝片28aをゴムにより、それぞれ一体に形成する。3つの緩衝片を28、28aを軸方向に積層した状態で、軸方向両側の緩衝片28に設けた外側緩衝素子29と、軸方向中央の緩衝片28aに設けた中間緩衝素子41とにより緩衝体24aを構成し、これら各緩衝体24aを歯部20a、23a同士の間部分に介在させる。【選択図】図3
TORQUE TRANSMISSION JOINT AND ELECTRIC POWER STEERING DEVICE
トルク伝達用継手及び電動式パワーステアリング装置
2016-04-21
Patent
Electronic Resource
Japanese
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