PROBLEM TO BE SOLVED: To provide a lawn mower enabling lawn-mowing height to be adjusted by a simple adjusting operation.SOLUTION: The lawn mower 1 is installed on the body 3 and includes a base member in contact with lawn and a convex-concave fastener 8 for fixing the base member 6 onto the body 3 wherein the fastener 8 includes a plurality of recessed parts 33 formed either one of the body 3 and the base member 6 and a pair of projected parts 63 formed on either one of them. In the lawn mower, the base member 6 has a release knob 80 functioning to keep the recessed parts and the projected parts fixed or make both of them unfixed wherein the release knob 80 is set on the base member 6 turnably and has projections 80a and 80b for fixing or unfixing the recessed parts 33 and the projected parts 63, and the projections 80a and 80b can be transferred, by turning the release knob 80, from/to a fixing position where the recessed parts 33 and the projected parts 63 are fixed to/from an unfixing position where these parts 33 and 63 are unfixed.COPYRIGHT: (C)2010,JPO&INPIT【課題】単純な調整操作で刈り込み高さの調整をすることができる芝刈り機を提供する。【解決手段】本体3に取り付けられ、芝生と接するベース部材6とを備えた芝刈り機1であって、前記本体3に対して前記ベース部材6を固定する凹凸係合部8を備え、前記凹凸係合部8は、前記本体3又は前記ベース部材6のいずれか一方に形成された複数の凹部33と、いずれか他方に形成された一対の凸部63とから成り、前記ベース部材には、前記凹部と凸部の固定を維持又は固定を解除する固定解除ノブ80を備え、前記固定解除ノブ80は、前記ベース部材6に回動可能に取り付けられ、前記凹部33と凸部63を固定又は解除可能にするための突起80a、80bを有し、前記突起80a、80bは、前記固定解除ノブの回動により前記凹部33と凸部63を固定する固定位置と前記凹部33と凸部63の固定を解除する解除位置に移動可能である。【選択図】図1
