| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve such a problem that in a dust collecting apparatus equipped on a table-top circular saw, as it is conventionally constituted so that the dust is prevented from flowing reversely by a valve opening/closing by a force of a wind generated by rotation of the circular saw, and when the force of the wind is weak, the valve is not enough opened, there exists a possibility of efficiently collecting the dust, and to thereby always stably collect the dust to prevent the dust from reverse flow. <P>SOLUTION: A reverse flow preventing wall 12 decreasing gradually the flow path area as it reaches on the lee is fixed on a dust collecting opening 9 or its lee side to make stable dust collecting efficiency and preventing the reverse flow compatible. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
