Interlocking adapter, and method for operating electric apparatus in interlocking manner with working machine

Patent metadata

Field	Value
Publication number	US-10898041-B2
Application number	US-201816232827-A
Country	US
Kind code	B2
Filing date	Dec 26, 2018
Priority date	Dec 28, 2017
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

An interlocking adapter in one aspect of the present disclosure includes a current path, an electric load, a switch, and a controller. The controller turns on and off the switch in synchronization with a change of an alternating-current voltage received from an electric outlet of an electric apparatus in response to reception of an interlocking command signal from a working machine so as to supply a load current from the electric outlet to the electric load. The controller turns on and off the switch at a specified ratio of a time every ½ cycle of the alternating-current voltage.

First claim

What is claimed is:

1. An interlocking adapter comprising:
an adapter main body;
a plug configured to be plugged into an electric outlet provided in a dust collector; and
a power cord having a first end and a second end, the first end being coupled to the plug, and the second end being coupled to the adapter main body,
the adapter main body including:
a reception input device configured to receive an interlocking command signal wirelessly transmitted from a working machine;
a full-wave rectifier configured to rectify full wave of an alternating-current voltage received from the electric outlet via the plug and the power cord and generate a rectified voltage;
a current path provided to supply a load current based on the rectified voltage from the full-wave rectifier, the dust collector being configured to detect operation of the working machine based on the load current;
a resistive load provided in the current path;
a switch provided in the current path and configured to be turned on and off, the current path being completed in response to the switch being turned on, and the current path being interrupted in response to the switch being turned off; and
a controller configured to control the switch so that the load current is supplied to the resistive load in response to reception of the interlocking command signal by the reception input device, the controller being configured to turn on the switch every time an on-period arrives and to turn off the switch every time an off-period arrives, the on-period being included in a first half of ½ cycle of the alternating-current voltage, and the off-period being included in a second half of the ½ cycle.

2. An interlocking adapter comprising:
a current path provided to supply a load current based on an alternating-current voltage received from an electric outlet provided in an electric apparatus;
an electric load provided in the current path, wherein the electric load includes a resistive load;
a switch provided in the current path and configured to be turned on and off, the current path being completed in response to the switch being turned on, and the current path being interrupted in response to the switch being turned off;
a controller configured to:
turn on and off the switch in synchronization with a change of the alternating-current voltage in response to reception of an interlocking command signal from a working machine so as to supply the load current from the electric outlet to the electric load; and
turn on and off the switch at a specified ratio of a time every ½ cycle of the alternating-current voltage; and

a fan configured to cool the resistive load.

3. The interlocking adapter according to claim 2 , wherein the controller is configured to drive the fan in synchronization with the interlocking command signal.

4. The interlocking adapter according to claim 3 , wherein the controller is configured to:
stop supply of the load current to the electric load in response to stop of reception of the interlocking command signal; and
stop driving of the fan according to elapse of a specified cooling time after stopping the supply of the load current.

5. The interlocking adapter according to claim 3 , further comprising:
a temperature detector configured to detect a temperature of the electric load,
wherein the controller is configured to:
stop supply of the load current to the electric load in response to stop of reception of the interlocking command signal; and
continue driving of the fan in response to the temperature being equal to or higher than a specified temperature after stop of the supply of the load current, the temperature being detected by the temperature detector.

6. The interlocking adapter according to claim 2 , wherein the controller is configured to:
determine whether the fan is normally rotating during supply of the load current to the electric load; and
stop the supply of the load current to the electric load in response to determination by the controller that the fan is not normally rotating.

7. The interlocking adapter according to claim 2 , further comprising:
a power cord configured to be coupled to the electric outlet; and
a housing that houses the fan together with the electric load; and
a first outer wall surface of the housing, the first outer wall surface including:
a first opening configured to suck air into the housing or discharge air from the housing; and
an insertion hole configured for inserting the power cord into the housing,

wherein the power cord is drawn out from the insertion hole to outside of the housing.

8. The interlocking adapter according to claim 7 ,
wherein the housing includes a second outer wall surface and a third outer wall surface,
the second outer wall surface includes a second opening configured to suck air into the housing or discharge air from the housing, and
the third outer wall surface includes a third opening configured to suck air into the housing or discharge air from the housing.

9. The interlocking adapter according to claim 8 , wherein the first opening, the second opening, and the third opening are arranged so as to face the electric load.

10. The interlocking adapter according to claim 9 , wherein the fan is arranged between one of the first opening, the second opening and the third opening, and the electric load.

11. The interlocking adapter according to claim 2 , further comprising:
a receiver configured to receive the interlocking command signal from the working machine; and
an insulation power supply configured to generate a power supply voltage to drive the receiver based on the alternating-current voltage, and isolate the power supply voltage from the alternating-current voltage.

12. The interlocking adapter according to claim 2 , wherein the controller is configured to turn on and off the switch so that the switch is turned on once or at least twice for a specified period within the ½ cycle of the alternating-current voltage.

13. The interlocking adapter according to claim 2 , wherein the controller is configured to:
alternately execute a conduction implementation control and a conduction stop control in response to reception of the interlocking command signal,
when executing the conduction implementation control, turn on and off the switch for 1 cycle of the alternating-current voltage or a specified control period longer than the 1 cycle so as to supply the load current from the electric outlet to the electric load, and
when executing the conduction stop control, turn off the switch for 1 cycle of the alternating-current voltage or a specified stop period longer than the 1 cycle so as to stop supply of the load current.

14. The interlocking adapter according to claim 2 ,
wherein the controller is configured to select one of control patterns according to a selection command received by the controller, and
the control patterns are different from each other in a ratio between an on-period of the switch and an off-period of the switch.

15. The interlocking adapter according to claim 2 , further comprising:
a full-wave rectifier configured to rectify full wave of the alternating-current voltage to thereby generate a rectified voltage, the full-wave rectifier including an output stage, and being configured to output the rectified voltage from the output stage,
wherein the current path is coupled to the output stage.

16. The interlocking adapter according to claim 2 , further comprising:
a voltage detector configured to detect a value of the alternating-current voltage,
wherein the controller is configured to adj

Assignees

• Makita Corp

Inventors

• Suzuki Hitoshi
• Kawai Yuki
• Kato Itsuku
• Hotta Yasutaka

Classifications

• H02M1/082

  with digital control · CPC title

• A47L7/0095 Primary

  Suction cleaners or attachments adapted to collect dust or waste from power tools · CPC title

• B25F5/00

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• A47L9/2868

  Arrangements for power supply of vacuum cleaners or the accessories thereof · CPC title

• G05F1/445

  being transistors in series with the load · CPC title