MALFUNCTION COUNTERMEASURE SWITCH MECHANISM FOR WET TYPE ELECTRIC DRILL, AND WET TYPE ELECTRIC DRILL

• Main Authors: TAKAGI KAZUMASA, SAKAMAKI KAZUYA, TAKAGI EIZO
• Format: Patent
• Language: English; Japanese
• Published: 02.09.2021
• Subjects: BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; PERFORMING OPERATIONS; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING STONE OR STONE-LIKE MATERIALS

To provide a malfunction countermeasure switch mechanism for a wet type electric drill free from a risk of the malfunction of a switch in a vacuum device or a water feed device and capable of preventing the staining and wetting of the circumference with cooling drainage or cooling water, and a wet type electric drill.SOLUTION: A malfunction countermeasure switch mechanism 1 for a wet type electric drill preventing the malfunction of a switch 4 in one or both of a vacuum device sucking cooling drainage in a wet type electric drill 100 and a water feed device feeding cooling water comprises: a telescopic tube 14 communicated with the vacuum device and draining cooling drainage, and further performing a telescopic motion in accordance with a drilled depth resulted in drilling by the wet type electric drill 100; the switch 4 linked with the telescopic motion of the telescopic tube 14; and a control member 20 disposed on the operation line of the ON-OFF operation of the switch 4 upon the shrinkage of the telescopic tube.SELECTED DRAWING: Figure 8 【課題】バキューム装置や給水装置のスイッチを誤動作するおそれがなく、冷却汚水や冷却水で周囲が汚れたり濡れたりすることを防止することができる湿式電動ドリルの誤動作対策スイッチ機構及びそれを備えた湿式電動ドリルを提供する。【解決手段】湿式電動ドリル１００の冷却汚水を吸引するバキューム装置又は冷却水を供給する給水装置のいずれか一方又は両方のスイッチ４の誤動作を防止する湿式電動ドリルの誤動作対策スイッチ機構１において、バキューム装置と連通されて冷却汚水を排水するとともに、湿式電動ドリル１００で削孔した削孔深さに応じて伸縮する伸縮チューブ１４と、伸縮チューブ１４の伸縮動作に連動するスイッチ４と、伸縮チューブが縮んだ時に、スイッチ４のＯＮ・ＯＦＦ動作の動作線上に配置される制御部材２０と、を備えることを特徴とする。【選択図】図８