Dust collector

• US 10,307,842 B2
• Filed: 04/13/2018
• Issued: 06/04/2019
• Est. Priority Date: 08/02/2013
• Status: Active Grant

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: Suzuki, Hitoshi
• Primary Examiner(s): Garcia, Carlos
• Application Number:
  US15/952,660
• Publication Number:
  US 20180229317A1
• Time in Patent Office: 417 Days
• Field of Search: 152462, 15246, 15301, 15339, 15347, 340 125, 340 1251, 340 436, 340680, 3406862, 3406864, 340687
• CPC Class Codes: A47L 2201/06 Control of the cleaning action for autonomous devices; Automatic detection of the surface condition before, during or after cleaning
• CPC Class Codes: A47L 7/0095 Suction cleaners or attachments adapted to collect dust or waste from power tools
• CPC Class Codes: A47L 9/2842 Suction motors or blowers
• CPC Class Codes: A47L 9/2868 Arrangements for power supply of vacuum cleaners or the accessories thereof
• CPC Class Codes: A47L 9/2894 Details related to signal transmission in suction cleaners
• CPC Class Codes: B23D 59/001 Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade measuring in general G01; controlling in general G05
• CPC Class Codes: B23D 59/006 for removing or collecting chips
• CPC Class Codes: B23Q 11/0046 by sucking
• CPC Class Codes: B23Q 11/0071 dust collectors for hand tools
• CPC Class Codes: B24B 23/02 with rotating grinding tools; Accessories therefor
• CPC Class Codes: B24B 23/028 Angle tools
• CPC Class Codes: B24B 55/00 Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition of general applicability for machine tools B23Q11/00; in general F16P
• CPC Class Codes: B24B 55/10 specially designed for portable grinding machines, e.g. hand-guided
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: H01Q 1/12 Supports; Mounting means
• CPC Class Codes: H05K 3/36 Assembling printed circuits with other printed circuits H05K7/142 takes precedence

Abstract

A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

Claims

1. A dust collector comprising:

a dust collection portion configured to suck dust through a dust collection hose;

a communication portion configured to wirelessly communicate with an electric working machine;

a power plug configured to receive an alternating-current power from an alternating-current power source;

a changeover switch directly electrically coupled to the power plug, wherein the changeover switch is configured to be changed into a first state, a second state, and a third state, wherein the changeover switch in the first state makes the dust collection portion operate interlocking with an operation of the electric working machine, the changeover switch in the second state inhibits the dust collection portion from an interlock operation with the operation of the electric working machine, and the changeover switch in the third state stops an operation of the dust collection portion; and

an interlock operation control portion configured to make the dust collection portion perform the interlock operation with the electric working machine in response to receipt of an interlock command by the communication portion with the changeover switch being in the first state, wherein the interlock command is periodically transmitted from the electric working machine,

wherein the interlock operation control portion includes a storage portion in which identification information is stored, the identification information being specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation,

wherein the interlock command includes an interlock operation request signal and an identification signal, the interlock operation request signal requesting the interlock operation, and the identification signal indicating the identification information, and

wherein the interlock operation control portion is further configured such that,

the interlock operation control portion makes the dust collection portion perform the interlock operation in response to receipt of the interlock command by the communication portion during operation of the electric working machine, and

the interlock operation control portion stops the interlock operation of the dust collection portion in response to no receipt of the interlock command by the communication portion for a specified period of time or more.

2. The dust collector according to claim 1,

wherein the specified period of time is set to be longer than a transmission cycle in which the electric working machine periodically transmits the interlock command.

3. The dust collector according to claim 1, wherein:

the dust collection portion includes;

a motor; and

a motor driving circuit configured to drive the motor; and

the dust collector includes a transmission path extending from the power plug through the changeover switch to the motor driving circuit.

4. The dust collector according to claim 1, further comprising a signal isolation circuit coupled to the changeover switch and the interlock operation control portion,

wherein a state of the changeover switch is inputted to the interlock operation control portion via the signal isolation circuit.

5. The dust collector according to claim 4,

wherein the signal isolation circuit includes a photocoupler.

6. The dust collector according to claim 1, further comprising a control power source configured to receive the alternating-current power from the alternating-current power source, the control power source being configured to generate a direct-current voltage,

wherein the changeover switch is coupled to the control power source.

7. The dust collector according to claim 6,

wherein the control power source is electrically coupled to the power plug via the changeover switch in the first state or the second state.

8. The dust collector according to claim 7, wherein the control power source is supplied power via the power plug and the changeover switch independent of the power supplied to the dust collection portion.

9. The dust collector according to claim 6,

wherein the control power source includes an isolation transformer.

10. The dust collector according to claim 1, further comprising a power outlet configured to receive the alternating-current power from the alternating-current power source, the power outlet being configured to supply an alternating-current power to an external device,

wherein the changeover switch is coupled to the power outlet.

11. The dust collector according to claim 10,

wherein the power outlet is electrically coupled to the power plug via the changeover switch in the first state or the second state.