公开(公告)号：KR101378831B1

公开(公告)日：2014-04-02

申请号：KR1020130050556

申请日：2013-05-06

Applicant: 고등기술연구원연구조합

Inventor： 허덕재 ,  고동신 ,  이재민

IPC: B25F5/02 ,  B25B23/00

Abstract: Disclosed is a gear box assembly for an electric tool. The gear box assembly includes: a gear box housing having a latch groove in an inner circumference thereof; a spindle installed within the gear box housing to be able to rotate by interposing a bushing therebetween; a gear box cap having a through-hole at the center thereof into which a rotating shaft of a driving motor is inserted, and a latch groove hole in an inner circumference thereof; a socket connecting and coupling the gear box housing and the gear box cap; a pinion installed within the gear box housing , and connected to the rotating shaft of the operation motor; a ring gear in which a gear unit is formed on an inner circumference thereof, a first latch protrusion is formed on an upper portion thereof and coupled to a latch groove of the gear box cap, and a second latch groove is formed on a lower portion thereof and coupled to the latch groove of the gear box housing; and a planetary gear engaged with the pinion, and rotating internally in the state of being in contact with the gear unit of the ring gear.

Abstract translation: 公开了一种用于电动工具的齿轮箱组件。 齿轮箱组件包括：齿轮箱壳体，其内圆周上具有一个闩锁槽; 安装在所述齿轮箱壳体内的主轴能够通过在其间插入衬套来旋转; 齿轮箱盖，其中心处具有插入有驱动电动机的旋转轴的通孔及其内周中的锁定槽孔; 连接齿轮箱壳体和齿轮箱盖的插座; 安装在齿轮箱壳体内的小齿轮，并连接到操作马达的旋转轴上; 在其内周上形成有齿轮单元的齿圈，在其上部形成有第一闩锁突起，并且联接到齿轮箱盖的闩锁槽，并且第二闩锁槽形成在下部 并联接到齿轮箱壳体的闩锁槽; 以及与小齿轮啮合的行星齿轮，并且在与齿圈的齿轮单元接触的状态下内部旋转。