Dust collection device for electric power tool, electric power tool, and dust collection system

Patent metadata

Field	Value
Publication number	US-10493577-B2
Application number	US-201715608012-A
Country	US
Kind code	B2
Filing date	May 30, 2017
Priority date	Jul 21, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A dust collection device for an electric power tool includes a main body case that includes an air exhaust port and is attachable to a hammer drill, a dust box provided therein with a filter, and a tubular sliding portion that has a base end connected to a connection port provided on the main body case, that includes a suction port at its front end, and that is slidable in a front-rear direction, and includes therein a dust collection path formed to pass from the suction port through the filter to the air exhaust port. The connection port is provided on a side surface of the main body case, and connected to a flexible hose serving as a base end of the sliding portion, and a side surface of the dust box is provided with an inlet port communicating with the connection port.

First claim

What is claimed is:

1. A dust collection device for an electric power tool comprising:
a main body case that (1) includes an air exhaust port, (2) is attachable to an electric power tool, and (3) includes a connection port;
a dust box with a filter and an inlet port; and
a tubular sliding portion that (1) has a base end that is connected to the connection port, (2) includes a suction port at its front end, and (3) is slidable along a longitudinal axis in a front-rear direction, wherein:
a dust collection path is formed in the dust collection device to extend from the suction port through the filter to the air exhaust port;
the connection port is on a right side surface or a left side surface of the main body case;
the inlet port is in a right side surface or a left side surface of the dust box; and
the inlet port communicates with the connection port.

2. The dust collection device for an electric power tool according to claim 1 , wherein the connection port is disposed on an upper half side in a central portion in the front-rear direction of the dust box.

3. The dust collection device for an electric power tool according to claim 1 , wherein the sliding portion is disposed in a position offset in a right and left direction toward the side surface of the main body case provided with the connection port, and a hose serving as a base end is connected to the connection port.

4. The dust collection device for an electric power tool according to claim 3 , wherein a light-emitting member configured to emit light forward is provided on a front surface of the main body case.

5. The dust collection device for an electric power tool according to claim 4 , wherein the light-emitting member is disposed at a center in the light and left direction of the front surface of the main body case.

6. The dust collection device for an electric power tool according to claim 3 , wherein the hose is connected to the connection port from a direction intersecting with the connection port.

7. The dust collection device for an electric power tool according to claim 6 , wherein the connection port opens rearward, and the hose is connected to the connection port from behind.

8. The dust collection device for an electric power tool according to claim 7 , wherein the connection port is provided with an L-shaped tubular elbow that opens rearward, and the hose is connected to the connection port from behind through the elbow.

9. The dust collection device for an electric power tool according to claim 1 , wherein a predetermined distance is set between the inlet port and the filter in the dust box, and a wall is provided to a side surface of the filter, which faces the inlet port.

10. The dust collection device for an electric power tool according to claim 1 , wherein an O-ring is disposed between the connection port and the inlet port.

11. The dust collection device for an electric power tool according to claim 1 , wherein an accommodating recess configured to accommodate the dust box is formed on the main body case so as to open forward, and the dust box is attachable to and detachable from the accommodating recess at the front.

12. The dust collection device for an electric power tool according to claim 1 , wherein a motor and a dust collection fan are accommodated in the main body case, and the main body case is provided therein with a partitioning portion partitioning a flow path of an air flow passing through an accommodating chamber for the motor from wiring in the main body case to inhibit contact between the air flow and the wiring.

13. The dust collection device for an electric power tool according to claim 12 , wherein the main body case is formed by assembling a pair of right and left half-split cases, and the partitioning portion is formed by butting ribs provided in an erect manner on respective inner surfaces of the half-split cases to each other.

14. An electric power tool comprising the dust collection device for an electric power tool according to claim 1 attached to the electric power tool.

15. A dust collection system comprising:
an electric power tool that is provided, on an outer surface of a housing, with a guide groove for attaching the dust collection device for an electric power tool according to claim 1 , and that is provided, in the housing, with an electric power tool side terminal that is exposed through a plug-in port and a shutter member that is configured to close the plug-in port when the dust collection device for an electric power tool is not attached; and
the dust collection device for an electric power tool according to claim 1 that is provided, on the main body case, with a rail portion for being attached to the housing by fitting with the guide groove, and that is provided with a dust collection side terminal configured to be electrically coupled to the electric power tool side terminal by being inserted from the plug-in port when the dust collection device is attached to the housing, wherein
the shutter member is provided with a coupling portion configured to project into the guide groove in a close position of the plug-in port, and the rail portion is configured to engage with the coupling portion and to move the shutter member to an open position of the plug-in port when the rail portion of the main body case fits with the guide groove of the housing.

16. A dust collection device for an electric power tool comprising:
a main body case that includes an air exhaust port and that is attachable to an electric power tool;
a dust box provided therein with a filter; and
a tubular sliding portion that has a base end to which a connection port provided on the main body case is connected, that includes a suction port at its front end, and that is slidable in a front-rear direction, wherein
a dust collection path is formed in the dust collection device to extend from the suction port through the filter to the air exhaust port,
the connection port is provided on a side surface of the main body case and connected to the base end of the sliding portion, and a side surface of the dust box is provided with an inlet port communicating with the connection port, and
the sliding portion is disposed in a position offset in a right and left direction toward the side surface of the main body case provided with the connection port, and a hose serving as a base end is connected to the connection port.

17. A dust collection device for an electric power tool comprising:
a main body case that includes an air exhaust port and that is attachable to an electric power tool;
a dust box provided therein with a filter; and
a tubular sliding portion that has a base end to which a connection port provided on the main body case is connected, that includes a suction port at its front end, and that is slidable in a front-rear direction, wherein
a dust collection path is formed in the dust collection device to extend from the suction port through the filter to the air exhaust port,
the connection port is provided on a side surface of the main body case and connected to the base end of the sliding portion, and a side surface of the dust box is provided with an inlet port communicating with the connection port, and
a predetermined distance is set between the inlet port and the filter in the dust box, and a wall is provided to a side surface of the filter, which faces the inlet port.

Assignees

• Makita Corp

Inventors

• Furusawa Masanori
• Mori Keita

Classifications

• B23Q11/0071

  dust collectors for hand tools · CPC title

• B23B47/34

  Arrangements for removing chips out of the holes made; Chip- breaking arrangements attached to the tool {(chip-breaking in turning machines B23B25/02; in turning tools B23B27/22)} · CPC title

• B23B2270/30

  Chip guiding or removal · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B23Q11/0046 Primary

  by sucking · CPC title