公开(公告)号：US06528923B2

公开(公告)日：2003-03-04

申请号：US09988742

申请日：2001-11-20

申请人： Masahiro Katoh ,  Yasuyuki Wakahara ,  Masami Niimi

发明人： Masahiro Katoh ,  Yasuyuki Wakahara ,  Masami Niimi

IPC分类号： H01R3924

CPC分类号： H01R39/18 ,  H02K13/10

摘要： A rotary electric machine includes a stacked brush, where low-resistance and high-resistance brush layers are disposed at the front and rear end sides in the rotational direction of a commutator, respectively. When the insulation gap between the neighboring segments of a commutator is “a” and the width of the high-resistance brush layer is “b”, “a” and “b” are determined to satisfy a 2×a+c, d>b, a

公开(公告)号：US06245440B1

公开(公告)日：2001-06-12

申请号：US09147100

申请日：1999-02-05

申请人： Doris Kuhlmann-Wilsdorf ,  David D. Makel ,  George T. Gillies

发明人： Doris Kuhlmann-Wilsdorf ,  David D. Makel ,  George T. Gillies

IPC分类号： H01R3924

CPC分类号： H01R43/12 ,  H01R39/22 ,  H01R39/24 ,  Y10T29/49119 ,  Y10T428/12465

摘要： A conductive fiber brush including a brush stock composed of plural conductive fibers or strands of fibers at least some of which may have plural bends along the leg of the fibers or strands. The fibers may have a diameter less than 0.2 mm and are arranged in contacting engagement with each other with the touching points among the fibers or strands maintaining elastic tension between the fibers or strands and thereby maintaining voids between the fibers or strands to produce a packing fraction between 1 and 50% and in extreme cases up to 70% but generally between 10-20% depending on the various factors, including the materials used, the current densities to be conducted, and the sliding speeds under operation. The plural bends are implemented by producing fibers or strands having a regular or irregular spiral, wavy, saw-tooth, triangular, and/or rectangular pattern, or other undulating pattern. Optionally, the voids in brush stock may be partially filled with a strengthening, lubricating, abrasive, and/or polishing material, and may be wrapped in an outer sheath, slid into a casing, or provided with an other covering of all or part of the area of the brush stock, be infiltrated or sprayed at the surface with some material, have an increased packing fraction at the surface and/or have some or all of the touching points between the fibers or strands soldered, welded or otherwise thermally joined. Optionally also, the friction among the fibers may be reduced through light lubrication applied by rinsing the brush or brush stock in a lubricant. In one embodiment, the fiber brush is employed in a brush loading device having a hydrostatically controlled brush holder wherein the force exerted on the brush is controlled by a metallic or other conductive hydrostatic fluid which at the same time conducts the current to the brush.

摘要翻译： 一种导电纤维刷，其包括由多根导电纤维或纤维束构成的刷子，其中至少一些可沿着纤维或股线的腿部具有多个弯曲部。 纤维可以具有小于0.2mm的直径并且布置成彼此接触接合，纤维或股线之间的接触点保持纤维或股线之间的弹性张力，从而保持纤维或股线之间的空隙以产生填充分数 根据各种因素，包括使用的材料，要进行的电流密度，以及正在运行的滑动速度，在1％至50％之间，极端情况下最多可达70％，但通常在10-20％之间。 多个弯曲通过产生具有规则或不规则的螺旋，波浪，锯齿，三角形和/或矩形图案或其它起伏图案的纤维或股线来实现。 可选地，电刷原料中的空隙可以部分地填充有强化，润滑，磨蚀和/或抛光材料，并且可以包裹在外护套中，滑入外壳中，或者设置有全部或部分 刷子坯料的面积在某些材料的表面被渗透或喷射，在表面具有增加的填充分数和/或在焊接，焊接或以其他方式热连接的纤维或线之间具有一些或全部接触点。 还可选地，纤维之间的摩擦可以通过通过在润滑剂中冲洗刷子或刷子料而施加的轻微润滑来减少。 在一个实施例中，纤维刷被用于具有流体静力控制的电刷架的电刷加载装置中，其中施加在电刷上的力由金属或其它导电静电流体控制，同时将电流传导到电刷。