Dust collector and power tool

Patent metadata

Field	Value
Publication number	US-10857644-B2
Application number	US-201816220436-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Dec 26, 2017
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

A dust collector includes body, a dust-storing part, a sliding part, a dust-transfer passage, and a biasing member. The sliding part is held by the body to be slidable in a specified axial direction and has a suction port. The dust-transfer passage connects the suction port and the dust-storing part. The biasing member biases the sliding part in a first direction of the axial direction. The sliding part is configured to be normally held in an initial position in which the sliding part protrudes from the body by a specified length in the first direction, and to be moved in a second direction opposite to the first direction against the biasing force when pressed in the second direction. The dust collector includes a cushioning member configured to be interposed between the body and the sliding part in the axial direction when the sliding part is placed in the initial position.

First claim

What is claimed is:

1. A dust collector configured to be mounted to a power tool, the power tool being configured to perform a processing operation on a workpiece by driving a tool accessory, the dust collector being configured to collect dust generated during the processing operation, the dust collector comprising:
a body having a mounting part, the mounting part being configured to be removably mounted to the power tool;
a dust-storing part mounted to the body and configured to store the dust;
a sliding part held by the body so as to be slidable in a specified axial direction, the sliding part having a suction part, the suction part having a suction port for the dust;
a dust-transfer passage connecting the suction port and the dust-storing part, at least a portion of the dust-transfer passage extending within the sliding part; and
a biasing member biasing the sliding part in a first direction of the axial direction, the sliding part protruding from the body in the first direction, wherein:
the sliding part is configured to be normally held in an initial position in which the sliding part protrudes from the body by a specified length in the first direction, by a biasing force of the biasing member, and configured to be moved in a second direction opposite to the first direction in the axial direction against the biasing force when pressed in the second direction, and
the dust collector includes a cushioning member configured to absorb impact applied to the body when the sliding part returns to the initial position, after the sliding part has been moved in the second direction from the initial position, by being interposed between the body and the sliding part in the axial direction when the sliding part is placed in the initial position.

2. The dust collector as defined in claim 1 , wherein the cushioning member is mounted to the body.

3. The dust collector as defined in claim 2 , wherein:
the sliding part has an adjusting member whose locking position with respect to the sliding part is changeable in the axial direction, the adjusting member being configured to adjust the specified length by which the sliding part protrudes from the body in the initial position, and
the cushioning member is configured to be interposed between the body and the adjusting member in the axial direction when the sliding part is placed in the initial position.

4. The dust collector as defined in claim 1 , wherein at least a portion of the sliding part is formed of metal having a lower specific gravity than iron.

5. The dust collector as defined in claim 1 , further comprising:
a lock member held by the body so as to be pivotable around a specified pivot axis, wherein:
the lock member has a hook configured to be engaged with a recess of the power tool to thereby restrict a movement of the dust collector relative to the power tool when the mounting part is mounted to the power tool, and
a distance between the pivot axis and a tip end of the hook is shorter than a distance between the pivot axis and a base end of the hook.

6. The dust collector as defined in claim 1 , further comprising:
a lock member held by the body so as to be pivotable around a specified pivot axis, wherein:
the lock member has a hook configured to be engaged with a recess of the power tool to thereby restrict a movement of the dust collector relative to the power tool when the mounting part is mounted to the power tool, and
the hook has a sliding-resistance part provided in an inside region of the hook and configured to restrict a sliding movement of the hook relative to the recess.

7. A power tool configured to perform a processing operation on a workpiece by driving a tool accessory, the power tool comprising:
a tool body; and
the dust collector as defined in claim 1 , the dust collector being removably mounted to the tool body via the mounting part.

8. The power tool as defined in claim 7 , wherein:
the mounting part of the dust collector includes a guide rail or a guide groove extending in the axial direction, and
the tool body has a guide groove configured to be slidingly engaged with the guide rail of the mounting part in the axial direction, or a guide rail configured to be slidingly engaged with the guide groove of the mounting part in the axial direction.

9. A dust collector configured to be mounted to a power tool, the power tool being configured to perform a processing operation on a workpiece by driving a tool accessory, the dust collector being configured to collect dust generated during the processing operation, the dust collector comprising:
a body having a mounting part, the mounting part being configured to be removably mounted to the power tool;
a dust-storing part mounted to the body and configured to store the dust;
a sliding part held by the body so as to be slidable in a specified axial direction, the sliding part having a suction part, the suction part having a suction port for the dust;
a dust-transfer passage connecting the suction port and the dust-storing part, at least a portion of the dust-transfer passage extending within the sliding part;
a biasing member biasing the sliding part in a first direction of the axial direction, the sliding part protruding from the body in the first direction, wherein:
the sliding part is configured to be normally held in an initial position in which the sliding part protrudes from the body by a specified length in the first direction, by a biasing force of the biasing member, and configured to be moved in a second direction opposite to the first direction in the axial direction against the biasing force when pressed in the second direction, and
the dust collector includes a cushioning member configured to be interposed between the body and the sliding part in the axial direction when the sliding part is placed in the initial position; and

an abutment member disposed adjacent to and on the second direction side of the cushioning member and configured to come into abutment with the sliding part when the sliding part is placed in the initial position.

10. The dust collector as defined in claim 9 , wherein the abutment member is held to be slidable in the axial direction in a state in which a movement of the abutment member in the second direction is restricted.

11. A power tool configured to perform a processing operation on a workpiece by driving a tool accessory, the power tool comprising:
a tool body; and
the dust collector as defined in claim 9 , the dust collector being removably mounted to the tool body via the mounting part.

12. A dust collector configured to be mounted to a power tool, the power tool being configured to perform a processing operation on a workpiece by driving a tool accessory, the dust collector being configured to collect dust generated during the processing operation, the dust collector comprising:
a body having a mounting part, the mounting part being configured to be removably mounted to the power tool;
a dust-storing part mounted to the body and configured to store the dust;
a sliding part held by the body so as to be slidable in a specified axial direction, the sliding part having a suction part, the suction part having a suction port for the dust;
a dust-transfer passage connecting the suction port and the dust-storing part, at least a portion of the dust-transfer passage extending within the sliding part;
a biasing member biasing the sliding part in a first direction of the axial direction, the sliding part protruding from the body in the first direction, wherein:
the sliding part is configured to be normally held in an initial position in which the sliding part protrudes from the body by a speci

Assignees

• Makita Corp

Inventors

• Furusawa Masanori
• Tsuji Hideki

Classifications

• B25F5/003 Primary

  Stops for limiting depth in rotary hand tools (for drilling tools: B23B49/003) · CPC title

• B23Q11/0071 Primary

  dust collectors for hand tools · CPC title

• B23B2270/62

  Use of suction · CPC title

• B25F5/029

  with storage compartments (B25F5/027 takes precedence; handles with provisions for storing tool elements B25C1/08) · CPC title

• B23Q11/0046

  by sucking · CPC title