公开(公告)号：US20020088287A1

公开(公告)日：2002-07-11

申请号：US09758410

申请日：2001-01-10

Inventor： Bruce Hardy ,  Paul Hauser

IPC: F16H021/44 ,  F16H021/54 ,  F16H025/18

CPC classification number: B64G1/66 ,  G02B26/10 ,  Y10T74/18856

Abstract: A high frequency mechanical scanning assembly which is capable of one or two dimensional scanning comprises an actuator assembly, a base assembly, a coil assembly and a sensor assembly. The actuator assembly includes an upper resonant system and a lower flexure. The upper resonant system has an upper mass, a reaction mass, and an upper flexure. The top surface of the upper mass is a mirrored surface which can be used to reflect a light beam. The actuator assembly is connected to the base assembly via the lower flexure. The lower flexure connects to the reaction mass at a point close to the center of mass of the reaction mass. Movement of the upper resonant system is caused by an excitation system which includes magnets securely mounted to at least the lower mass and the coil assembly which provides driving torques to the magnets. The lower flexure is less stiff than the upper flexure. The upper flexure acts as a spring which stores and releases kinetic energy as the upper mass and reaction mass move between deflected and undeflected positions. In operation, the upper resonant system resonates about an upper translational node and a lower translational node, with the upper mass deflecting in an opposite direction as the reaction mass. The opposite deflections of the upper and reaction masses, and the location and stiffness of the lower flexure result in very little torque being transmitted to the base assembly.

Abstract translation: 能够进行一维或二维扫描的高频机械扫描组件包括致动器组件，基座组件，线圈组件和传感器组件。 致动器组件包括上部谐振系统和较低的挠曲。 上部谐振系统具有上部质量，反作用质量和上挠曲。 上部质量块的上表面是可用于反射光束的镜面。 致动器组件经由下部挠曲件连接到基座组件。 较低的挠曲在接近反应物质质心的点处连接到反应物质。 上部谐振系统的运动是由一种励磁系统引起的，该励磁系统包括至少安装在至少下部质量的磁体和向磁体提供驱动转矩的线圈组件。 较低的弯曲度比上部挠曲件的刚度更低。 上挠曲用作弹簧，弹簧在上部质量和反作用质量在偏转位置和未偏转位置之间移动时存储和释放动能。 在操作中，上部谐振系统围绕上部平移节点和下部平移节点共振，其中上部质量沿与反作用质量相反的方向偏转。 上部和反作用质量块的相反偏转以及下部挠曲件的位置和刚度导致非常小的扭矩传递到基座组件。

公开(公告)号：US20020139207A1

公开(公告)日：2002-10-03

申请号：US09819432

申请日：2001-03-28

Applicant: TRW Inc.

Inventor： Richard A. Stoll ,  John S. Borza

IPC: F16H001/04 ,  F16H021/44 ,  F16H021/54 ,  F16H025/18 ,  B62D005/06

CPC classification number: B62D5/22 ,  F15B15/1447 ,  Y10T74/18856 ,  Y10T74/1967

Abstract: A hydraulic power assist rack and pinion steering system (12) for a vehicle includes a housing (14) in which a rack (10) is movable along an axis (16) to effect turning movement of steerable wheels of the vehicle. The rack (10) comprises a first rack part (50) having an elongate body portion (56) and an end portion formed as a first piston portion (58), and a second rack (80) part having an elongate body portion (86) and an end portion formed as a second piston portion (88). The first piston portion (58) of the first rack part (50) is joined to the second piston portion (88) of the second rack part (80) to form a piston (22). The body portion (56) of the first rack part (50) extends axially away from the piston (22) in a first direction (110). The body portion (86) of the second rack part (80) extends axially away from the piston (22) in a second direction (112) opposite the first direction (110).

Abstract translation: 用于车辆的液压动力辅助齿条和小齿轮转向系统（12）包括壳体（14），其中齿条（10）可沿着轴线（16）移动，以实现车辆的可转向车轮的转动。 齿条（10）包括具有细长主体部分（56）和形成为第一活塞部分（58）的端部的第一齿条部分（50）和具有细长主体部分（86）的第二齿条 ）和形成为第二活塞部（88）的端部。 第一齿条部（50）的第一活塞部（58）与第二齿条部（80）的第二活塞部（88）接合，形成活塞（22）。 第一齿条部分（50）的主体部分（56）在第一方向（110）上沿着轴向远离活塞（22）延伸。 第二齿条部分（80）的主体部分（86）沿与第一方向（110）相对的第二方向（112）轴向地远离活塞（22）延伸。