Patent ID: 7544116

Claim:
A grinder with easily replacing grinding tool, comprising: an elongated main body, a shaft chamber being formed in a front end of the main body; an activation switch being arranged on the main body and switchable between an activation position and a shutoff position; a passage being transversely formed in the main body to intersect the shaft chamber; a slide way being longitudinally formed in the main body, a front end of the slide way communicating with the passage; a rotary shaft rotatably mounted in the shaft chamber, one end of the rotary shaft outward protruding from the main body for installing a grinding tool thereon; at least one engaging section being disposed on the rotary shaft; a chucking button having at least one rod body, a chucking section being formed on a circumference of the rod body, the rod body of the chucking button being fitted in the passage and movable between a chucking position and a releasing position; when the chucking button is positioned in the chucking position, the rod body being engaged with the engaging section of the rotary shaft; when the chucking button is positioned in the releasing position, the rod body of the chucking button being disengaged from the engaging section, whereby the rotary shaft can freely rotate and the chucking section is aligned with the front end of the slide way; and a link mounted in the slide way of the main body and slidable along the slide way; a resilient member being disposed in the slide way to resiliently abut against the link, whereby in normal state, the resilient member resiliently pushes the link to move rearward; when the activation switch is positioned in the shutoff position, the link being rearward moved to a releasing position and the front end of the link being not chucked with the chucking button; when the activation switch is positioned in the activation position, the link is pushed to move forward, whereby the front end of the link is chucked with the chucking section of the chucking button.