发明授权
US06512509B1 Forked gimbal arm force feedback mechanism 有权
叉式万向臂力反馈机构

  • 专利标题: Forked gimbal arm force feedback mechanism
  • 专利标题(中): 叉式万向臂力反馈机构
  • 申请号: US09541439
    申请日: 2000-03-31
  • 公开(公告)号: US06512509B1
    公开(公告)日: 2003-01-28
  • 发明人: David McVicar
  • 申请人: David McVicar
  • 主分类号: G09G500
  • IPC分类号: G09G500
Forked gimbal arm force feedback mechanism
摘要:
A pointing device incorporates a force feedback mechanism driven by an actuator to convey physical sensations to the user. A position sensing apparatus is provided for monitoring the position of the user manipulable object in the pointing device. The sensing apparatus employs sensors that are directly or essentially directly connected to the user manipulable object to reduce backlash and are mounted in a way to eliminate off-axis loading on the sensors. The reduction of backlash produces more accurate position measurements, while the elimination of off-axis loading protects the sensors from damage to the internal mechanisms thereof. A computer controller processes the data from the sensors, and controls the actuator to produce feedback forces to the user manipulable object via the force feedback mechanism. The force feedback mechanism employs a gimbal mount having a pair of gimbal arms. One of the arms is a double sided or forked gimbal arm which substantially retains fully the joystick handle in all movements including applied torque about the axis of the handle as well as up-down and forward-backward forces. The improved constraint provides improved accuracy with reduced tolerances, resulting in better game play. The force feedback mechanism further includes a gear reduction system that utilizes an annular reduction gear portion for force transmission from the force feedback actuator to the user manipulable object. The annular reduction gear portion has gear teeth along an inner, concave side to produce a greater gear reduction, so that a smaller and cheaper actuator can be used. The gear reduction system is configured to take up less space. The pointing device is compact and accurate, and can be produced economically.
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