| 摘要 |
A grinding tool includes a handle with a grinding wheel connected thereto and driven by a driving device. An opening is defined in the handle and a switch device is received in the opening with which a cover is engaged. A recess is defined in an outer periphery of the cover and a hole is defined through the cover. A pushing member is slidably engaged with the recess and a stepped protrusion extending from an underside of a first end of the pushing member is engaged with an inner periphery of the hole. A gap is defined between a second end of the pushing member and a surface defining the recess. An activation member is connected to the sliding member via the hole and has a convex contacting the switch device. A spring is connected between the cover and the activation member. The activation member shuts off the switch device when the sliding member is pulled by the spring by pushing the second end of the pushing member.
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