PNEUMATIC TOOL

PROBLEM TO BE SOLVED: To provide a pneumatic tool for allowing a bit holder to continue slow rotation even while jetting compressed air.SOLUTION: A pneumatic tool 1 includes a flow passage switching member 84 mounted in a tool housing 30 so as to cross an air supply passage 35. The flow passage swit...

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Bibliographic Details
Main Author AOKI YOSHITOMO
Format Patent
LanguageEnglish
Japanese
Published 02.03.2017
Subjects
COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR
DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR
HAND TOOLS
MANIPULATORS
PERFORMING OPERATIONS
PORTABLE POWER-DRIVEN TOOLS
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a pneumatic tool for allowing a bit holder to continue slow rotation even while jetting compressed air.SOLUTION: A pneumatic tool 1 includes a flow passage switching member 84 mounted in a tool housing 30 so as to cross an air supply passage 35. The flow passage switching member 84 has first and second flow passages 86 and 87. The second flow passage 87 has a limit flow passage section 88 narrower than the first flow passage 86 and an open flow passage section 89 opened to the atmosphere. When the flow passage switching member 84 is located at a normal drive position. the first flow passage 86 is communicated with the air supply passage 35 and compressed air flows toward an air motor 20 through the first flow passage 86. When the flow passage switching member 84 is located at an air injection position, the second flow passage 87 is communicated with the air supply passage 35, a part of the compressed air supplied from an air supply port 34 is jetted in the atmosphere from the open flow passage section 89, the remaining compressed air flows toward the air motor 20 through the limit flow passage section 88, and the air motor 20 is driven to slowly rotate.SELECTED DRAWING: Figure 8 【課題】圧縮空気を噴射している最中にもビットホルダがゆっくりと回転をし続けるようにした空気式工具を提供すること。【解決手段】当該空気式工具１は、工具ハウジング３０に空気供給路３５を横断するように取り付けられた流路切替部材８４を備える。流路切替部材８４は、第１及び第２流路８６、８７を有し、第２流路８７が、第１流路８６よりも狭い制限流路部８８、及び大気に開放された開放流路部８９を有する。流路切替部材８４を通常駆動位置とすると、第１流路８６が空気供給路３５に連通されて、圧縮空気が第１流路８６を通ってエアモータ２０に向かって流れる。流路切替部材８４を空気噴射位置とすると、第２流路８７が空気供給路３５に連通され、空気供給口３４から供給された圧縮空気の一部が開放流路部８９から大気中に噴射され、残りの圧縮空気が制限流路部８８を通ってエアモータ２０に向かって流れてエアモータ２０をゆっくりと回転駆動する。【選択図】図８
Bibliography:Application Number: JP20150167798