公开(公告)号：US6142032A

公开(公告)日：2000-11-07

申请号：US14998

申请日：1998-01-30

申请人： Wesley Carl Creager

发明人： Wesley Carl Creager

IPC分类号： F16H25/20 ,  F16H55/18

CPC分类号： F16H25/2006 ,  Y10T74/18728 ,  Y10T74/19902

摘要： An anti-backlash nut assembly for translational movement along the axis of a leadscrew in response to rotational movement of the nut assembly relative to the leadscrew. The nut assembly comprises (i) a primary nut having an internal thread which mates with an external thread on the leadscrew; (ii) a secondary nut having an internal thread which mates with the external thread on the leadscrew, the secondary nut being capable of rotational movement about the leadscrew independent of the primary nut; (iii) a spring disposed intermediate the primary nut and the secondary nut; and (iv) a housing connected to the said primary nut which surrounds the spring and the secondary nut, for imparting rotational movement applied thereto simultaneously to the primary nut and the secondary nut. In a second embodiment, the nut assembly comprises (i) a primary nut having an internal thread which mates with an external thread on the leadscrew; (ii) a preload member having an internal thread which mates with the external thread on the leadscrew, the secondary nut being capable of rotational movement about the leadscrew independent of the primary nut; (iii) a spring disposed intermediate the preload member and an adjustment member; and (iv) an adjustment member connected to the housing and having a bore for insertion of the leadscrew therethrough; and (v) a housing connected to the primary nut which surrounds the spring, the preload member and the adjustment member, for imparting rotational movement applied thereto simultaneously to the primary nut and the preload member. The adjustment member capable of rotating about the leadscrew for adjusting the preload of the spring while the nut assembly is mounted on the leadscrew.

摘要翻译： 一种反间隙螺母组件，用于响应于螺母组件相对于丝杠的旋转运动而沿着丝杠的轴线平移运动。 螺母组件包括（i）具有内螺纹的主螺母，其与丝杠上的外螺纹配合; （ii）具有与所述丝杠上的外螺纹配合的内螺纹的次级螺母，所述次级螺母能够独立于所述主螺母围绕所述丝杠旋转运动; （iii）设置在所述主螺母和所述次级螺母之间的弹簧; 以及（iv）连接到所述主螺母的壳体，其围绕弹簧和次级螺母，用于将同时施加到主螺母和次级螺母的旋转运动。 在第二实施例中，螺母组件包括（i）主螺母，其具有与丝杠上的外螺纹配合的内螺纹; （ii）具有与所述丝杠上的所述外螺纹配合的内螺纹的预加载构件，所述次级螺母能够独立于所述主螺母围绕所述丝杠旋转运动; （iii）设置在所述预加载构件之间的弹簧和调节构件; 以及（iv）调节构件，其连接到所述壳体并且具有用于通过其插入所述丝杠的孔; 以及（v）连接到主螺母的壳体，其围绕弹簧，预加载构件和调节构件，用于向主螺母和预加载构件同时施加旋转运动。 所述调节构件能够围绕所述丝杠旋转，以在所述螺母组件安装在所述丝杠上时调节所述弹簧的预载荷。