PROBLEM TO BE SOLVED: To prevent a push button for attaching and detaching a bar from being pressed when using a dental handpiece.SOLUTION: A dental handpiece is fitted with a bar 10 and rotates the fitted bar 10. The dental handpiece comprises: a drive shaft for transmitting a driving force to the bar 10 a screw shaft provided rotatably at the outer periphery of the drive shaft a bar latch moving between a limiting position for limiting the attachment and detachment of the bar 10 by engaging with the fitted bar 10 and an attaching/detaching position for enabling the attachment and detachment of the bar 10 by retreating from the bar 10 and a rear latch plate and a front latch plate which are provided to sandwich the bar latch and in which at least one of the latch plates is provided so as to move forward and backward with respect to the bar latch. The rear latch plate and/or the front latch plate press the bar latch while moving in accordance with the rotation of the screw shaft and move the bar latch from the limiting position to the attaching/detaching position.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT
