In this study, a two-way clutch mechanism using planetary gear meshing was proposed. The proposed mechanism allows low torque loss and high-speed rotation instead of a larger backlash compared to a roller type two-way clutch. The unique structure of this mechanism that makes such functionality possible comprises two independent planetary gears with variable distances between the axes. When the input shaft rotated, the planetary gears rotated at a distance. Torque is transmitted by the input shaft pushing directly on the output shaft, so losses on the tooth surface are small. As with gear reducers, high-speed rotation is possible. When the output shaft rotated, the two planetary gears engaged, and the shaft locked. A flat cam was used to switch between the above two states, so the overall structure was simple. The diameter, thickness, and weight of the developed prototype were 44 mm, 24 mm, and 78.8 g, respectively. We experimentally confirmed that the mechanism worked as expected. The theoretical locking limit torque was 1.16 Nm. The torque loss was 5 mNm at the static condition and less than 10 mNm at a high speed of 4000 rpm.

中文翻译：

---

高速低扭矩损失双向离合器的开发

在这项研究中，提出了一种使用行星齿轮啮合的双向离合器机构。与滚子式双向离合器相比，所提出的机构允许低扭矩损失和高速旋转，而不是更大的齿隙。该机构的独特结构使这种功能成为可能，包括两个独立的行星齿轮，轴之间的距离可变。当输入轴旋转时，行星齿轮旋转一段距离。扭矩是由输入轴直接推动输出轴传递的，因此齿面损失小。与齿轮减速器一样，可以进行高速旋转。当输出轴旋转时，两个行星齿轮啮合，轴锁定。采用平面凸轮在上述两种状态之间切换，整体结构简单。直径、厚度、开发的原型的重量和重量分别为 44 毫米、24 毫米和 78.8 克。我们通过实验证实该机制按预期工作。理论锁定极限扭矩为 1.16 Nm。扭矩损失在静态条件下为 5 mNm，在 4000 rpm 的高速下小于 10 mNm。