---
publication_id: "OT-2026-000002948"
title: "Electric power tool"
published_at: "2026-09-15T19:16:19.651647Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000002948"
categories:
  - "tools-tooling/clamping-tools"
keywords:
  - "b25b21/02"
  - "b25f5/02"
  - "b25f5/02"
  - "b25f5/02"
  - "b25f5/00"
  - "b25f5/02"
---

# Electric power tool

## Abstract

An electric power tool includes a motor, an output unit driven by the motor, a metallic housing, a cover, an electrical part, and a battery mounting portion. The metallic housing houses the output unit and extends forward. The cover is made of resin that covers at least a part of the housing. The electrical part is disposed on a front portion side of the housing. The battery mounting portion has positive and negative terminals to which a mounted battery is electrically connected. On an outer surface between front and rear faces of the housing, a connecting portion of a ground wire connected to the negative terminal of the battery mounting portion is disposed in a conductive state with the outer surface. A partitioning portion is formed in the cover and partitions between a lead wire for electrical component connected to the electrical part and the connecting portion.