| 发明名称 | Power tool with high-speed electric motor | ||
| 摘要 | A hand-held power tool includes a motor having a stator and a rotor, the motor being configured to rotate the rotor at a speed of at least 40,000 rpm, an output shaft directly driven by the rotor, a tool accessory shaft configured to support a tool accessory, and a two-stage speed reducing transmission operably connecting the output shaft to the tool accessory shaft. The two-stage speed reducing transmission is configured to drive the tool accessory shaft at a rate less than the rotor speed, for example, at a rate less than or equal to 37.5% of the rotor speed. | ||
| 申请公布号 | US9364906(B2) | 申请公布日期 | 2016.06.14 |
| 申请号 | US201414155358 | 申请日期 | 2014.01.15 |
| 申请人 | MAKITA CORPORATION | 发明人 | Abe Kenji;Okumi Masayoshi;Nagasaka Hidenori;Omura Motohiro;Fukumoto Masaaki;Shibata Kenji;Furui Nobuyasu;Higashi Masanori;Aoyama Kiyoshi |
| 分类号 | H02K7/14;B23D47/12;B24B23/02;B24B47/12;B25F5/02 | 主分类号 | H02K7/14 |
| 代理机构 | J-TEK LAW PLLC | 代理人 | J-TEK LAW PLLC ;Tekanic Jeffrey D.;Wakeman Scott T. |
| 主权项 | 1. A hand-held power tool comprising: a motor having a stator and a rotor, the motor being configured to rotate the rotor at a rotational speed of at least 40,000 rpm, and a speed-reducing transmission operably coupled to the rotor, the speed-reducing transmission comprising a first stage and a second stage, wherein the first stage has a gear ratio that is greater than a gear ratio of the second stage, wherein the speed-reducing transmission is configured to drive a tool accessory at a rotational speed within the range of 1,000-15,000 revolutions per minute. | ||
| 地址 | Anjo-Shi JP | ||