公开(公告)号：US06769507B2

公开(公告)日：2004-08-03

申请号：US10379191

申请日：2003-03-04

申请人： Tetsuya Murakami ,  Takeo Iino ,  Masanori Kobayashi ,  Akihiko Shiina ,  Yoshio Ito ,  Tatsuo Otsuka ,  Takayuki Todaka

发明人： Tetsuya Murakami ,  Takeo Iino ,  Masanori Kobayashi ,  Akihiko Shiina ,  Yoshio Ito ,  Tatsuo Otsuka ,  Takayuki Todaka

IPC分类号： B62D504

CPC分类号： B62D5/0409 ,  F16C27/066 ,  F16C2326/24 ,  F16C2361/61 ,  F16F1/3828 ,  F16F1/3873 ,  F16H1/16 ,  F16H57/021 ,  F16H2057/0224

摘要： On the outer periphery of a bearing 10 for supporting a worm 71 rotating interlocked with the rotation of a steering assist motor 6 inside the housing 8, elastic members 20 are provided to restrain the bearing 10 from moving in the radial direction thereof. The force for the restraint by the elastic members 20 is made different depending on the position in the peripheral direction thereof. A portion of the elastic member, wherein the force for restraining the movement of the bearing 10 in the radial direction is small, energizes the worm 71 to the meshing position of the worm 71 and a worm wheel 72. Another portion, wherein the force for restraining the movement is large, restrains the worm 71 from moving along the lead of the worm wheel 72. With this configuration, the elastic members 20 can reduce the amount of the backlash at the meshing portion of the worm 71 and the worm wheel 72, and can make the rotation torque applied to the meshing portion of the worm gears relatively small.

摘要翻译： 在用于支撑与转向辅助马达6在壳体8内的旋转相联动的蜗杆71的轴承10的外周上，设置弹性部件20以限制轴承10沿其径向方向的移动。 弹性构件20的约束力根据其周向的位置而不同。 弹性构件的一部分，其中用于限制轴承10在径向上的移动的力小，使得蜗杆71向蜗杆71和蜗轮72的啮合位置供能。另一部分，其中， 限制运动大，阻止蜗杆71沿着蜗轮72的引线移动。通过这种构造，弹性构件20可以减少蜗杆71和蜗轮72的啮合部分处的间隙量， 并且可以使施加到蜗轮的啮合部的旋转扭矩相对较小。

公开(公告)号：US06550567B2

公开(公告)日：2003-04-22

申请号：US09854164

申请日：2001-05-10

申请人： Tetsuya Murakami ,  Takeo Iino ,  Masanori Kobayashi ,  Akihiko Shiina ,  Yoshio Ito ,  Tatsuo Otsuka ,  Takayuki Todaka

发明人： Tetsuya Murakami ,  Takeo Iino ,  Masanori Kobayashi ,  Akihiko Shiina ,  Yoshio Ito ,  Tatsuo Otsuka ,  Takayuki Todaka

IPC分类号： B62D504

CPC分类号： B62D5/0409 ,  F16C27/066 ,  F16C2326/24 ,  F16C2361/61 ,  F16F1/3828 ,  F16F1/3873 ,  F16H1/16 ,  F16H57/021 ,  F16H2057/0224

摘要： On the outer periphery of a bearing 10 for supporting a worm 71 rotating interlocked with the rotation of a steering assist motor 6 inside the housing 8, elastic members 20 are provided to restrain the bearing 10 from moving in the radial direction thereof. The force for the restraint by the elastic members 20 is made different depending on the position in the peripheral direction thereof. A portion of the elastic member, wherein the force for restraining the movement of the bearing 10 in the radial direction is small, energizes the worm 71 to the meshing position of the worm 71 and a worm wheel 72. Another portion, wherein the force for restraining the movement is large, restrains the worm 71 from moving along the lead of the worm wheel 72. With this configuration, the elastic members 20 can reduce the amount of the backlash at the meshing portion of the worm 71 and the worm wheel 72, and can make the rotation torque applied to the meshing portion of the worm gears relatively small.

摘要翻译： 在用于支撑与转向辅助马达6在壳体8内的旋转相联动的蜗杆71的轴承10的外周上，设置弹性部件20以限制轴承10沿其径向方向的移动。 弹性构件20的约束力根据其周向的位置而不同。 弹性构件的一部分，其中用于限制轴承10在径向上的移动的力小，使得蜗杆71向蜗杆71和蜗轮72的啮合位置供能。另一部分，其中， 限制运动大，阻止蜗杆71沿着蜗轮72的引线移动。通过这种构造，弹性构件20可以减少蜗杆71和蜗轮72的啮合部分处的间隙量， 并且可以使施加到蜗轮的啮合部的旋转扭矩相对较小。