公开(公告)号：US20080073995A1

公开(公告)日：2008-03-27

申请号：US11861752

申请日：2007-09-26

Applicant: Noboru Niguchi ,  Hirohide Inayama ,  Naotake Kanda ,  Masaru Horikawa

Inventor： Noboru Niguchi ,  Hirohide Inayama ,  Naotake Kanda ,  Masaru Horikawa

IPC: H02K1/00

CPC classification number: H02K29/03

Abstract: A brushless motor includes an annular stator and a rotor which has a plurality of permanent magnets alternately arranged in circumferential direction on the rotor to form poles and which is disposed within the stator to be rotatable with respect to the stator. The stator includes a cylindrical yoke and a plurality of teeth which are same in size one another, are connected to the yoke to extend therefrom toward the rotor, and are disposed at even interval in the circumferential direction. Width of each of the teeth in the circumferential direction is set to be greater than or at a vicinity of the value which is obtained by dividing outer diameter of the rotor by the number of the teeth and multiplying the result of dividing by π/2.

Abstract translation: 无刷电动机包括环形定子和转子，该转子具有在转子上沿圆周方向交替设置的多个永久磁铁，以形成磁极，并设置在定子内以相对于定子可转动。 定子包括一个圆柱形磁轭和多个彼此大小相同的齿，它们连接到磁轭，从而朝向转子延伸，并且在圆周方向上以均匀间隔设置。 每个齿的圆周方向的宽度被设定为大于或接近通过将转子的外径除以齿数并将乘以除以pi / 2的结果而得到的值。

公开(公告)号：US20080054737A1

公开(公告)日：2008-03-06

申请号：US11892734

申请日：2007-08-27

Applicant: Hirohide Inayama ,  Noboru Niguchi ,  Masaru Horikawa ,  Ken Matsubara ,  Naotake Kanda

Inventor： Hirohide Inayama ,  Noboru Niguchi ,  Masaru Horikawa ,  Ken Matsubara ,  Naotake Kanda

IPC: H02K1/12 ,  H02K1/02

CPC classification number: H02K1/148 ,  H02K2201/06

Abstract: A stator of an electric motor includes a stator core including an annular yoke. The stator core includes a plurality of teeth formed on, for example, an inner periphery of the yoke and has a coil wound on each of the teeth. Each of the teeth includes first and second end portions opposed to each other in a radial direction of the stator core. The first end portion is connected to the yoke. The second end portion is formed with an axially extending projection extending in an axial direction of the stator core. A coil receiving groove is defined between the axially extending projection and the yoke. The axially extending projection includes a distal end portion in the axial direction, and a root portion adjoining a bottom of the coil receiving groove. In the radial direction, a thickness of the root portion is greater than a thickness of the distal end portion.

Abstract translation: 电动机的定子包括具有环形轭的定子铁芯。 定子铁芯包括形成在例如轭的内周上的多个齿，并且具有缠绕在每个齿上的线圈。 每个齿包括在定子芯的径向上彼此相对的第一和第二端部。 第一端部连接到轭。 第二端部形成有在定子芯的轴向方向上延伸的轴向延伸的突起。 线圈接收槽限定在轴向延伸的突起和轭之间。 轴向延伸的突出部包括在轴向方向上的远端部分和邻接线圈容纳槽的底部的根部部分。 在径向方向上，根部的厚度大于前端部的厚度。