Dust collecting devices for machining apparatus
AssigneeMakita Corporation
InventorsToshiyuki Kani, Kenji Abe
Life of this patent
Estimating the term…
Abstract
A dust collecting device for collecting cutting chips into a dust collecting container is provided. A back-flow preventing wall(s) is fixedly disposed on a flow path member defining a flow path between a machining apparatus and the dust collecting container. The back-flow preventing wall(s) is configured to decrease a cross sectional area of a flow path part defined by the flow path member in a downstream direction with respect to the flow of the air containing the cutting chips toward the dust collecting container.
Claims12
An apparatus comprising:
- a table circular saw including a rotary circular saw blade and a dust discharge pipe, the rotary circular saw blade producing a flow of air during a cutting operation of a workpiece, so that cutting chips produced by the rotary circular saw blade flow into the dust discharge pipe with the flow of air;
- and
- a dust collecting device comprising:
- a dust collecting container;
- and
- an adaptor including a connector connected to the dust discharge pipe of the table circular saw, a container support disposed within the dust collecting container and configured to support the dust collecting container, and a back-flow preventing wall fixedly disposed on the container support, wherein:
- the container support includes opposite side walls, so that flow paths are defined between the side walls and the back-flow preventing wall;
- a cross sectional area of each of the flow paths decreases in a downstream direction with respect to the flow of air containing cutting chips flowing from the connector into the dust collecting container;
- the back-flow preventing wall is opposed to the connector and extends downward from the container support beyond a position opposed to a central axis of the connector;
- the back-flow preventing wall has a V-shape in a horizontal cross section, with a closed side opposite to an opening of the V-shape oriented toward a side of the connector, the back-flow preventing wall extends from the container support in a cantilever manner and in a direction substantially perpendicular to the downstream direction.
A dust collecting device for a table circular saw including a rotary circular saw blade and a dust discharge pipe, the rotary circular saw blade producing a flow of air during a cutting operation of a workpiece, so that cutting chips produced by the rotary circular saw blade flow into the dust discharge pipe with the flow of air, the dust collecting device, comprising:
- a dust collecting container;
- and
- an adaptor including a connector connected to the dust discharge pipe of the table circular saw, a container support disposed within the dust collecting container and configured to support the dust collecting container, and a back-flow preventing wall fixedly disposed on the container support, wherein:
- the container support includes opposite side walls, so that flow paths are defined between the side walls and the back-flow preventing wall,
- a cross sectional area of each of the flow paths decreases in a downstream direction with respect to the flow of air containing cutting chips flowing from the connector into the dust collecting container,
- the back-flow preventing wall is opposed to the connector and extends downward from the container support beyond a position opposed to a central axis of the connector, and
- the back-flow preventing wall has a V-shape in a horizontal cross section, with a closed side opposite to an opening of the V-shape oriented toward a side of the connector, the back-flow preventing wall extends from the container support in a cantilever manner and in a direction substantially perpendicular to the downstream direction.
Dependencies are inferred from the claim text.