JP7043301B2 - Interlocking adapter - Google Patents

Description

The present disclosure relates to interlocking adapters used for interlocking operation of electrical equipment with working machines.

Conventionally, an interlocking system that automatically operates and stops the dust collector when the power tool operates and stops is known.
In this interlocking system, the dust collector is provided with an outlet that outputs an AC voltage, which is the power supply voltage, and the dust collector supplies power to the electric tool from this outlet to detect the load current that flows when the electric tool operates. Start the dust collection operation.

Further, in this type of interlocking system, it has been proposed to provide an interlocking adapter in the outlet so that the dust collector can be operated in interlocking with the power tool without supplying power to the power tool from the outlet (for example). , Patent Document 1).

The interlocking adapter of this proposal is provided with a receiving unit that receives an interlocking operation command transmitted from the power tool side, and when the interlocking operation command is received by the receiving unit, the current path from the outlet to the resistor is conducted. It is configured to allow a load current to flow through the resistor.

Therefore, by using the interlocking adapter proposed above, the dust collector can be operated in conjunction with the power tool without supplying AC voltage from the dust collector to the power tool, eliminating the need for wiring between the dust collector and the power tool. can do.

Further, according to the interlocking adapter proposed above, not only AC-driven work machines such as electric tools that operate by receiving AC voltage, but also battery-powered work machines can interlock electric devices such as dust collectors. Can be driven.

Japanese Patent No. 4955332

By the way, the interlocking adapter of the above proposal is to operate an electric device such as a dust collector in interlocking operation with a working machine such as an electric tool. It is necessary to pass a load current that can detect the operation of the work equipment on the equipment side.

Therefore, in the interlocking adapter proposed above, it is necessary to use an electric load connected to the outlet that can continuously energize a load current equivalent to the current flowing when the work equipment is operating, and the interlocking adapter is used. There is a problem of increasing the size.

In addition, since the electric load generates heat when energized, it is necessary to take heat dissipation measures using a heat sink or the like, which also increases the size of the interlocking adapter. Further, there is a problem that the power supplied from the outlet of the electric device is wasted by passing the load current through the electric load.

One aspect of the present disclosure is to reduce the load current flowing to the electric load for interlocking operation in the interlocking adapter that causes the electric device to operate in conjunction with the work equipment by passing the load current from the outlet of the electric device to the electric load. Therefore, it is desirable to reduce power consumption and reduce the size of the interlocking adapter.

The interlocking adapter in one aspect of the present disclosure is attached to an outlet provided in an electric device, and a load current is passed through an electric load by an AC voltage supplied from the outlet to operate the electric device in conjunction with a work machine. It includes a switch unit and a control unit.

The switch unit is provided on the energization path of the load current, and is configured to conduct / cut off the energization path. Then, when the control unit receives a command for interlocking operation, it synchronizes with the voltage change of the AC voltage and turns the switch unit on and off at a predetermined time ratio every 1/2 cycle of the AC voltage, thereby performing an outlet. Load current is passed through.

As described above, in the interlocking adapter of the present disclosure, when the electric device is interlocked with the work machine in accordance with the instruction of the interlocking operation, the switch unit is not simply turned on and the load current is passed through the electric load, but the alternating current thereof. The switch unit is turned on and off at a predetermined time ratio every 1/2 cycle of the voltage.

For this reason, compared to the conventional interlocking adapter described above, the amount of load current (in other words, the effective current) that flows through the electric load to operate the electrical equipment in conjunction with the work equipment is reduced to suppress power consumption. Can be done. Further, since the effective current flowing through the electric load can be reduced, the calorific value of the electric load can be suppressed and the interlocking adapter can be miniaturized.

Here, the on period in which the switch unit is turned on in order to operate the electric device in conjunction with the working machine may correspond to the load current detection characteristic used for determining whether or not the electric device is operated in conjunction with the work machine.

For example, if the electrical equipment is configured to determine whether or not to start interlocking operation based on the load current that flows after the zero crossing point of the AC voltage, the control unit shall be configured every 1/2 cycle of the AC voltage. , The switch should be turned on for a certain period from the zero cross point.

Further, for example, when the electric device is configured to determine whether or not to start the interlocking operation based on the load current flowing before the zero crossing point of the AC voltage, the control unit is 1 / of the AC voltage. The switch unit may be turned on for a certain period before the zero cross point every two cycles.

Then, in order to carry out such energization control in the control unit, the control unit turns on the switch unit once within 1/2 cycle of the AC voltage so that the switch unit is in the ON state for a predetermined period. It should be configured to turn it off.

In addition, in order to operate multiple types of electrical equipment with different load current detection characteristics in conjunction with the work equipment using one interlocking adapter, the control unit must be switched multiple times within 1/2 cycle of the AC voltage. The switch unit may be turned on and off so that the switch unit remains on for a predetermined period of time.

By doing so, the user can operate a plurality of types of electric devices in conjunction with the work machine by using one interlocking adapter, and the usability of the interlocking adapter can be improved.
On the other hand, the electrical equipment is configured to continue operation for a certain period of time even if the load current is no longer detected after the interlocking operation is started by detecting that the load current is flowing from the outlet. There is something.

For example, a dust collector, which is an example of an electric device, is known to be configured to suck in surrounding dust by continuing operation for a certain period after that even if the operation of the working machine is stopped.
When the electric device is configured in this way, the control unit may control the energization of the load current according to the operating characteristics of the electric device.

That is, in this case, when the control unit receives the command of the interlocking operation, the energization execution control and the energization stop control are alternately executed, so that the interlocking operation is continued even after the electric device cannot detect the load current. It may be configured to temporarily stop the energization of the load current within the period.

By doing so, the amount of current (effective current) that the interlocking adapter draws through the electric load for interlocking operation can be reduced, the amount of heat generated by the energization of the load current can be suppressed, and the interlocking adapter can be made smaller. Is possible.

In this case, in the energization execution control, the control unit turns the switch unit on and off for one cycle of the AC voltage or a predetermined control period longer than one cycle, and causes a load current to flow from the outlet to the electric load. It may be configured as follows. Further, in the energization stop control, the switch unit may be turned off to cut off the load current during a predetermined stop period longer than one cycle of the AC voltage or one cycle.

Next, the control unit determines the control pattern when the switch unit is turned on / off in response to the interlocking operation command according to the selection command from the outside, and the control unit has a plurality of control patterns having different time ratios for turning the switch unit on / off. It may be configured to be selected from among.

In other words, since there are multiple types of electrical equipment that have different load current detection characteristics when determining whether or not to operate in conjunction with each other, the control pattern when the control unit turns the switch unit on and off can be determined. It can be changed according to the type of electrical equipment.

Even in this way, the user can operate a plurality of types of electric devices in conjunction with the working machine by using one interlocking adapter. Further, in this case, since the control pattern when the control unit turns the switch unit on and off can be changed according to the type of the electric device, the amount of current flowing through the electric load is required to operate the electric device in conjunction with the work machine. It is possible to minimize the size of the interlocking adapter.

Next, in the interlocking adapter of the present disclosure, the control unit intermittently flows a load current through the electric load by turning the switch unit on and off, and the load current intermittently operates in conjunction with the electric device. To judge.

Therefore, the control unit needs to accurately control the on-period and the off-period of the switch unit, and for that purpose, a semiconductor such as a FET or an IGBT that can turn the switch unit on / off at a desired timing. It may be composed of elements.

In this way, when the switch unit is composed of semiconductor elements, the interlocking adapter is provided with a full-wave rectifier unit that full-wave rectifies the AC voltage supplied from the outlet of the electric device, and the switch unit is a full-wave rectifier unit. It is advisable to provide it in the output path of the rectified voltage from.

That is, in this way, the switch unit is turned on and off at a desired timing, a load current is passed from the outlet of the electric device to the electric load, and the electric device is determined to operate in conjunction with the load current. You will be able to do it.

In this case, the electric load can be provided in the input path of the AC voltage to the full-wave rectifying unit or in the output path of the rectified voltage from the full-wave rectifying unit.
Next, the load characteristics (resistance value, etc.) of the electric load are set so that the load current flowing during the on period when the control unit turns on the switch unit is equal to or greater than the current value at which the electrical equipment determines the implementation of the interlocking operation. Just set it.

However, the load current that flows through the electric load during the ON period of the switch unit is determined by the voltage value of the AC voltage supplied from the outlet of the electrical equipment when the switch unit is in the ON state and the load characteristics of the electrical load. When the voltage value of the AC voltage is low, the load current decreases.

Therefore, the interlocking adapter of the present disclosure is provided with a voltage detection unit that detects the voltage value of the AC voltage supplied from the outlet, and the control unit is based on the voltage value of the AC voltage detected by the voltage detection unit. It may be configured to adjust the time ratio for turning on / off the switch unit so that the lower the voltage value, the longer the on time of the switch unit.

By doing so, it is desired that the electric device can determine the execution of the interlocking operation based on the load current flowing through the electric load within the ON period of the switch unit without being affected by the voltage fluctuation of the AC voltage supplied from the outlet. It becomes possible to control the load current of. Therefore, it becomes possible to more reliably operate the electric device in conjunction with the operation of the working machine.

By the way, as the electric load, a load resistance portion composed of a resistance capable of energizing a load current is usually used, but the load resistance portion generates heat when energized. Therefore, when the load resistance portion is used as the electric load, it is preferable to provide a fan for cooling the load resistance portion.

Further, in this case, since the load resistance unit generates heat when the load current is flowing, the control unit may be configured to drive the fan in synchronization with the command of the interlocking operation.
In addition, the control unit stops energizing the load current to the load resistance unit according to the stop command of the interlocking operation, but if the fan drive is stopped at the same time as this energization stop, the interlocking adapter will be generated by the heat of the load resistance unit. It is conceivable that the temperature will rise.

Therefore, the control unit may be configured to stop driving the fan after a predetermined cooling time has elapsed after the load current to the load resistance unit is stopped to be energized. By doing so, it is possible to cool the load resistance portion and suppress the temperature rise of the interlocking adapter even after the energization of the load resistance portion is cut off.

Further, depending on the temperature around the interlocking adapter, the load resistance portion may not be sufficiently cooled even if the fan is continuously driven until a predetermined cooling time elapses after the energization of the load current is stopped.

Therefore, the control unit monitors the temperature of the load resistance unit even after stopping the energization of the load current to the load resistance unit according to the stop command of the interlocking operation, and continues to drive the fan if the load resistance unit is hot. It may be configured to do so. By doing so, it is possible to suppress the temperature rise of the interlocking adapter due to the heat of the load resistance portion after the fan drive is stopped after the energization to the load resistance portion is cut off.

Further, the control unit monitors whether or not the fan is rotating normally when the load current is applied to the load resistance unit, and if the fan rotation is abnormal, the load current is applied to the load resistance unit. May be configured to stop.

By doing so, when the load current is applied to the load resistance portion, the fan is out of order and the load resistance portion cannot be cooled, and it is possible to suppress the load resistance portion from excessively generating heat.
As described above, if the energization of the load current to the load resistance portion is forcibly stopped due to the failure of the fan, the electric device cannot be operated in conjunction with the work machine.

Therefore, when the energization of the load current to the load resistance part is forcibly stopped as described above, an error is displayed to indicate that the cause of the interlocking operation failure is due to the failure of the interlocking adapter. May be notified to the person.

On the other hand, when the fan is housed in the housing of the interlocking adapter together with the load resistance portion, the housing may be provided with an opening for sucking or discharging outside air, but if the opening is closed when the interlocking adapter is used. , The cooling effect of the load resistance part due to the rotation of the fan is reduced.

Therefore, among the plurality of outer wall surfaces constituting the housing, one outer wall surface has an opening for sucking or discharging outside air into the housing and an insertion hole through which a power cord for connecting to an outlet is inserted. It is advisable to provide.

By doing so, since the power cord is pulled out from the outer wall surface provided with the opening through the insertion hole, it is possible to prevent the opening from being blocked by the power cord. Therefore, the intake or exhaust path of the outside air can be secured by the opening, and the load resistance portion can be cooled by the rotation of the fan.

Further, in particular, if the fan is arranged in the vicinity of this opening, air can be forcibly flowed through the opening that is not blocked, so that the load resistance portion can be cooled more efficiently. can do.

Further, openings for sucking or discharging outside air into the housing are provided in the plurality of outer wall surfaces constituting the housing, the outer wall surface provided with the insertion hole for the power cord, and the other two or more outer wall surfaces. , Each may be provided.

In this way, in the housing, the opening provided in the outer wall surface from which the power cord is pulled out and the opening provided in the other outer wall surface can form a passage for outside air, and one of the openings is closed. Even if it comes off, it is possible to secure a passage for the outside air. Therefore, the cooling effect of the load resistance portion due to the rotation of the fan can be sufficiently exhibited.

Further, when the openings are provided on the plurality of outer wall surfaces of the housing in this way, each opening is arranged at a position facing the load resistance portion housed in the housing, and the fan is provided with one of the openings and the load resistance portion. It should be placed between.

In other words, in this way, the air flow generated by the rotation of the fan can be concentrated on the load resistance section, and the heat from the load resistance section can be suppressed from sneaking into other parts of the housing. The temperature rise can be suppressed.

By the way, as described above, when the control unit is configured to select a control pattern for turning on / off the switch unit from a plurality of control patterns according to a selection command from the outside, the selected control pattern is selected. May be notified to the user.

When this notification is given, for example, by lighting an LED or displaying an image, it is necessary that the display unit is not hidden when the user is operating the operation unit for a selection command. .. Further, even when an error is displayed due to a fan failure or the like, it is preferable that the display portion is not hidden.

For this reason, when the interlocking adapter is provided with a display unit that displays an operating state such as a selected control pattern or an error, the display unit and the operation unit are provided on the same outer wall surface of the housing, and the display unit is provided. Should be placed on the outside of the housing (in other words, the corner) rather than the operation unit.

By doing so, when the user is operating the operation unit by holding the housing of the interlocking adapter, the display unit arranged on the outside of the housing is not hidden by the user's hand, so that it can be used. The person can check the display unit while operating the operation unit.

It is explanatory drawing which shows the structure of the whole interlocking system of 1st Embodiment. It is a block diagram which shows the structure of the interlocking adapter of 1st Embodiment. It is explanatory drawing which shows the control pattern of the switch part set for each operation mode of the interlocking adapter. It is a flowchart which shows the control process which is executed to turn on / off a switch part in a control part. It is explanatory drawing which shows the modification of the control pattern of a switch part. It is a flowchart which shows the first half part of the control processing executed according to the control pattern of FIG. It is a flowchart which shows the latter half part of the control process shown in FIG. 6A. It is a block diagram which shows the structure of the interlocking adapter of 2nd Embodiment. It is a flowchart which shows the control process which is executed in the control part of 2nd Embodiment. It is a flowchart which shows the detail of the fan motor control process shown in FIG. It is a flowchart which shows the detail of the switch part failure diagnosis processing shown in FIG. It is explanatory drawing which shows the appearance of the interlocking adapter of 2nd Embodiment, FIG. 11A is a plan view, FIG. 11B is a side view seen from the lower side of FIG. 11A, FIG. 11C is a bottom view, FIG. 11D is a left side view, and FIG. 11E. Is the right side view. It is a top view which shows the state which the upper housing of the interlocking adapter is removed. FIG. 11 is a cross-sectional view taken along the line XIII-XIII shown in FIG. FIG. 14A is a perspective view showing the appearance of the interlocking adapter, FIG. 14A shows a state in which the hook is stored, and FIG. 14B shows a state in which the hook is pulled out. It is a perspective view which shows the state which the interlocking adapter of 2nd Embodiment is attached to the dust collector. It is a perspective view which shows the state which attached the band for fixing to the interlocking adapter of 2nd Embodiment. It is a circuit diagram which shows the structure of the interlocking adapter of a reference example. It is a circuit diagram which shows the modification of the interlocking adapter of FIG.

The embodiments of the present disclosure will be described below together with the drawings.
[First Embodiment]
As shown in FIG. 1, the interlocking system of the present embodiment includes a circular saw 10 as a working machine and a dust collector 20 as an electric device operated in conjunction with the circular saw 10.

The dust collector 20 has a configuration in which a dust collector main body 30 having a built-in AC motor and a suction fan is mounted on the upper part of the tank 22. A power cord 24 for receiving power supply from an AC power source such as a commercial power source is pulled out from the tank 22.

The AC motor built in the dust collector main body 30 is driven by the power supplied from the AC power source connected via the power cord 24 to rotate the suction fan. When the suction fan is rotated by the AC motor, it sucks dust and the like around the tip of the hose 28 together with the outside air through the hose 28 connected to the suction port 26 of the tank 22 and allows the suction fan to pass through the tank 22. Exhaust from the dust collector main body 30.

A filter is provided between the inside of the tank 22 and the dust collector main body 30, and dust or the like sucked through the hose 28 is captured by the filter and collected in the tank 22.
The circular saw 10 includes a circular saw main body 12 having a built-in motor, a disk-shaped saw blade 14 mounted on a rotating shaft protruding from the circular saw main body 12, and a blade case 16 mounted on the circular saw main body 12 to cover the saw blade 14. And. The tip of the hose 28 pulled out from the suction port 26 of the dust collector 20 is connected to the blade case 16.

Therefore, if the dust collector 20 is operated in conjunction with the user while operating the circular saw 10 to cut the work material, the dust collector 20 sucks the dust generated from the work material by the cutting work. Can be done.

On the other hand, the dust collector main body 30 detects an outlet 32 for supplying AC power to the work machine and a load current flowing from the outlet 32 to the work machine in order to operate in conjunction with the work machine such as the Marunoco 10, and AC. The control unit 34 that drives the motor is housed.

Therefore, for example, if the working machine is an AC drive type working machine, the dust collector 20 can be operated in conjunction with the operation of the working machine by inserting the AC plug of the working machine into the outlet 32 of the dust collector 20.

On the other hand, in the circular saw 10 of the present embodiment, the mounting portion 18 of the battery pack 40 is provided in the circular saw main body 12, and the motor is powered by the DC power supplied from the battery pack 40 mounted in the mounting portion 18. Is configured to drive.

Then, when the motor is driven by the operation of the user (in other words, during the cutting work of the work material), the circular saw 10 wirelessly transmits a command signal for interlocking operation of the electric device such as the dust collector 20. A transmitter 42 is provided.

Further, the outlet 32 of the dust collector 20 is equipped with an interlocking adapter 50 that receives a command signal for interlocking operation transmitted from the transmitter 42 and flows a predetermined load current.
The interlocking adapter 50 receives an AC plug 52 that is electrically connected to the dust collector 20 by being plugged into an outlet 32 and a command signal for interlocking operation transmitted from the transmitter 42, and receives the interlocking operation command signal transmitted from the transmitter 42, and the dust collector 20 via the AC plug 52. It is provided with an adapter main body 54 for supplying a load current from. The AC plug 52 is provided at the tip of the power cord 53 pulled out from the adapter main body 54.

As shown in FIG. 2, in the adapter main body 54, when the AC plug 52 is plugged into the outlet 32, the full-wave rectifier unit 60 that full-wave rectifies the AC voltage supplied from the outlet 32 via the power cord 53. Is provided. The full-wave rectifying unit 60 is composed of a bridge circuit (so-called diode bridge) composed of four diodes for rectification.

Then, the rectified voltage rectified by the full-wave rectifying unit 60 is applied to the series circuit of the load resistance unit 62, the switch unit 64, and the current detecting unit 66.
Here, the load resistance unit 62 is an electric load for passing a load current capable of detecting the operation of the working machine on the dust collector 20 side, and is composed of a resistance capable of passing the load current.

Further, the switch unit 64 is for conducting / interrupting the energization path of the load current to the load resistance unit 62 composed of the series circuit of the load resistance unit 62, the switch unit 64, and the current detection unit 66. Yes, it is composed of IGBTs (Insulated Gate Bipolar Transistors). The switch unit 64 may be composed of a switching element such as an FET.

Further, the current detection unit 66 is for detecting the load current flowing in the energization path. For example, the current detection unit 66 is provided with a resistance for current detection connected in series with the energization path, and the voltage across the resistor is used as the load current. It is configured to be output as a detection signal of.

Then, the detection signal from the current detection unit 66 is input to the control unit 70 for turning on / off the switch unit 64 and the overcurrent protection unit 79.
The overcurrent protection unit 79 forcibly turns off the switch unit 64 when the load current detected by the current detection unit 66 exceeds a preset threshold value for overcurrent determination, and the load resistance unit 79. Prevents overcurrent from flowing through 62.

Further, the load resistance unit 62 is provided with a temperature detection unit 78 including a thermistor or the like, and a detection signal (temperature of the load resistance unit 62) from the temperature detection unit 78 is also input to the control unit 70.
Further, in order to detect the zero cross point of the AC voltage supplied from the outlet 32 of the dust collector 20 to the AC plug 52 at the output terminal of the rectified voltage from the full-wave rectifier unit 60, separately from the series circuit for energizing the load current. The zero cross detection unit 68 is connected. Then, the detection signal of the zero cross point from the zero cross detection unit 68 is also input to the control unit 70.

Since the rectified voltage rectified by the full-wave rectifying unit 60 is applied to the zero-cross detecting unit 68, the zero-cross detecting unit 68 detects the timing at which the rectified voltage becomes zero as the zero-crossing point. It is configured as follows.

Further, a control power supply unit 74 is connected to the output terminal of the rectified voltage from the full-wave rectifier unit 60 via a diode 72 for preventing backflow. The control power supply unit 74 is a power supply circuit that generates a power supply voltage (DC constant voltage) for operating the internal circuit of the adapter main body 54 such as the control unit 70 with the rectified voltage from the full-wave rectification unit 60.

Then, in the input path of the rectified voltage to the control power supply unit 74, for example, the rectified voltage is divided by a resistor to detect the voltage value of the rectified voltage (in other words, the voltage value of the AC voltage), and the detection thereof. A power supply voltage detection unit 76 for inputting a voltage to the control unit 70 is provided.

The control unit 70 is composed of a microcontroller (MCU) including a CPU, ROM, RAM, etc., and is connected to the load resistance unit 62 when a command signal for interlocking operation is transmitted from the transmitter 42 of the Marunoco 10. A control process for passing the load current is performed.

Further, in carrying out this control process, the control unit 70 uses the zero cross point of the AC voltage detected by the zero cross detection unit 68 and the voltage value of the AC voltage detected by the power supply voltage detection unit 76. ..

Further, the control unit 70 determines the overheated state of the load resistance unit 62 based on the temperature of the load resistance unit detected by the temperature detection unit 78 and the current value of the load current detected by the current detection unit 66. Then, a protection process for forcibly turning off the switch unit 64 is also performed.

Next, the adapter main body 54 is used for a receiving unit 80 that receives a command signal for interlocking operation transmitted from the transmitter 42 of the circular saw 10 and for the user to manually set the operation of the interlocking adapter 50. An operation unit 82 is provided.

The operation unit 82 is composed of a switch for sequentially switching and setting the operation mode of the interlocking adapter 50 to any of mode 1, mode 2, and mode 3, which will be described later.
The control unit 70 is connected to a reception input unit 86 for inputting a reception signal from the reception unit 80 and an operation input unit 88 for inputting an operation signal from the operation unit 82.

The receiving unit 80 is configured separately from the adapter main body 54, and is detachably attached to the adapter main body 54. Then, when the receiving unit 80 is supplied with power from the control power supply unit 74, the user touches the power supply terminal to the receiving unit 80 when the receiving unit 80 is not attached to the adapter main body 54, resulting in an electric shock. Or the control power supply unit 74 may fail.

Therefore, the interlocking adapter 50 is configured to take in an AC voltage from the input path of the AC voltage from the AC plug 52, convert the voltage with an isolation transformer, and then generate a power supply voltage for driving the receiving unit 80. An isolated power supply unit 90 is provided.

By supplying power to the receiving unit 80 from the insulated power supply unit 90, safety is ensured when the user touches the power supply terminal to the receiving unit 80. Further, since the operation unit 82 is also a part directly operated by the user, the insulated power supply unit 90 is also configured to supply power to the operation unit 82.

Further, even if the power is supplied to the receiving unit 80 and the operating unit 82 via the insulated power supply unit 90, the power is supplied between the receiving unit 80 and the receiving input unit 86, or between the operating unit 82 and the operating input unit 88. If it is configured to be directly connected with a signal line, it may not be possible to ensure safety.

Therefore, in the present embodiment, the reception unit 80 and the reception input unit 86, and the operation unit 82 and the operation input unit 88 are connected via a photocoupler composed of a light emitting element and a light receiving element. Has been done. Therefore, the space between the receiving unit 80 and the receiving input unit 86, and the space between the operating unit 82 and the operating input unit 88 are also electrically isolated, so that safety can be ensured.

A varistor 56 is provided as a surge absorber in the AC voltage input path from the AC plug 52, and the varistor 56 protects the internal circuit from external noise.

Further, the control unit 70 is connected to a display unit 84 for displaying an operation mode set via the operation unit 82, for example, by turning on an LED.
Next, the operation mode that can be set via the operation unit 82 is the type of the dust collector 20 that can be operated in conjunction with the interlocking adapter 50 of the present embodiment (specifically, the detection of the load current for determining the interlocking operation in the dust collector 20). Three types of operation modes shown in FIG. 3 are prepared according to the characteristics).

Of these, in mode 1, every detection cycle (that is, 1/2 cycle of the AC voltage) of the zero cross point (time point t0 shown in FIG. 3) by the zero cross detection unit 68, after the zero cross point is detected, W1 is the switch unit for a certain period of time. Turn 64 off. After that, W2 is set to turn on the switch unit 64 for a certain period until the next zero crossing point.

Further, in mode 2, although the time ratio for turning on / off the switch unit 64 is different from that in mode 1, W1 turns off the switch unit 64 for a certain period every 1/2 cycle of the AC voltage, as in mode 1. After that, W2 is set to turn on the switch unit 64 for a certain period of time.

Further, in mode 3, every 1/2 cycle of the AC voltage, after detecting the zero crossing point, the switch unit 64 is turned on after waiting for a short time (W1), and after that, when W2 elapses for a certain period, the switch unit 64 is turned on. It is preset to be turned off.

In mode 3, after the zero cross point is detected, the switch unit 64 is turned on after waiting for a short time because the current flowing through the motor of the AC drive type power tool originally connected to the outlet 32 is 0 with respect to the voltage phase. This is because it is delayed by about 1 ms. That is, in the mode 3, in order to control the power not to be energized for this delay time, the switch unit 64 is turned on after waiting for a short time after detecting the zero cross point.

Then, in the memory (ROM) of the control unit 70, a period W1 for turning off the switch unit 64 after the zero crossing point of the AC voltage is detected and a period W1 for turning on the switch unit 64 after the period W1 elapses in each mode 1 to 3. The period W2 to be performed is stored as setting data.

The periods W1 and W2 of the setting data shown in FIG. 3 are immediately after the zero cross point is detected when the switch unit 64 is turned on / off when the frequency of the AC voltage is 50 Hz and the 1/2 cycle is 10 ms. It represents the off time and the next on time.

Further, in mode 2, not only the on / off state of the switch unit 64 is switched every 1/2 cycle of the AC voltage, but also the energization execution control in which the load current is passed to the load resistance unit 62 is executed for a certain period by this switching. Is set to.

Then, when W3 elapses for a certain period of time, the energization stop control is performed by holding the W4 and the switch unit 64 in the off state for a certain period of time to stop the energization of the load current, and then every time W3 and W4 elapse for a certain period of time. It is set to alternately execute the energization execution control and the energization stop control.

Therefore, as shown in FIG. 3, in the setting data of the mode 2, a time representing the periods W3 and W4 for alternately executing the energization execution control and the energization stop control is set. Then, in the setting data of the modes 1 and 3, the periods W3 and W4 are set to 0.

The periods W3 and W4 for performing the energization execution control and the energization stop control in the mode 2 are set to a longer time than one cycle of the AC voltage, but the energization execution control period W3 is interlocked on the dust collector 20 side. As long as it can be determined that the operation is to be performed, it may be set to one cycle of the AC voltage.

Further, the period W4 for performing the energization stop control may be set to be shorter than the operation duration from when the predetermined load current is no longer detected to when the drive of the AC motor is stopped on the dust collector 20 side.

The longer W4 is during this period, the smaller the amount of current (effective current) that flows through the load resistance unit 62 for interlocking operation, and the more the power consumption can be reduced. However, even if this period W4 is set to one cycle of the AC voltage, the power consumption can be reduced as compared with the case where the energization execution control is continuously executed. Therefore, the period W4 is the same as the period W3. , It may be set to one cycle of AC voltage.

Next, the control process executed in the control unit 70 to operate the dust collector 20 in conjunction with the circular saw 10 will be described.
As shown in FIG. 4, when the control process is started, the operation mode currently set by the operation of the operation unit 82 is checked in S110, and the current AC voltage from the power supply voltage detection unit 76 is checked in S120. Read the voltage value Vnow of.

Then, in S130, the off period W1 and the on period W2 are read from the setting data corresponding to the current operation mode, each period W1 and W2 are corrected by using the voltage value Vnow of the AC voltage, and the corrected period W1 and are corrected. W2 is set as a timer value for timing with a timer.

That is, as shown in FIG. 3, when the AC voltage supplied from the outlet 32 of the dust collector 20 decreases, the amount of the load current flowing through the load resistance unit 62 during the ON period W2 of the switch unit 64 decreases, and the dust collector It may not be possible to determine the interlocking operation on the 20 side.

Therefore, the timer values are corrected for each period W1 and W2 so that the amount of current flowing through the load resistance unit 62 during the ON period of the switch unit 64 is the amount of current required for determining the interlocking operation on the dust collector 20 side. It is set as.

In S130, the on period W2 becomes longer when the current voltage value Vnow is lower than the reference voltage value Vref based on the ratio of the reference voltage value Vref corresponding to the setting data to the current voltage value Vnow. In addition, W1 and W2 are corrected for each period. When the current voltage value Vnow is higher than the reference voltage value Vref, each period W1 and W2 are corrected so that the on period W2 becomes shorter.

Next, in S140, the period W3 of the energization execution control and the period W4 of the energization stop control are read from the setting data corresponding to the operation mode, and each of these periods W3 and W4 is set as a timer value for timing with a timer. ..

In this way, when the timer values of W1 to S4 are set for each period, the process shifts to S150, and the receiving unit 80 determines whether or not the interlocking operation command signal transmitted from the transmitter 42 of the circular saw 10 is received. do. Then, if the interlocking operation command signal is not received, the process proceeds to S110, and if the interlocking operation command signal is received, the process proceeds to S160.

In S160, the zero cross detection unit 68 determines whether or not the zero cross point of the AC voltage has been detected, and waits for the zero cross point to be detected. Further, when the zero cross point is detected, the process shifts to S170, and then, by determining whether or not the off period W1 set as the timer value has elapsed, the process waits for the off period W1 to elapse.

When it is determined in S170 that the off period W1 has elapsed, the process shifts to S180, the switch unit 64 is switched from the off state to the on state, the load current is energized to the load resistance unit 62, and the load current is supplied to S190. Transition.

In S190, it is determined in S180 whether or not the ON period W2 set as the timer value has elapsed after the switch unit 64 is switched to the ON state. Then, when it is determined in S190 that the on period W2 has not elapsed, the process shifts to S200, and it is detailed whether or not the temperature of the load resistance unit 62 detected by the temperature detection unit 78 is normal. Determines whether or not the temperature is lower than the preset upper limit temperature.

In S200, the temperature of the load resistance unit 62 is lower than the upper limit temperature, and when it is determined to be normal, the process shifts to S210 and the load current detected by the current detection unit 66 is lower than the upper limit value. , Judge whether it is normal or not. Then, in S210, when the load current is lower than the upper limit value and it is determined to be normal, the process shifts to S190 again, and it is determined whether or not the on period W2 has elapsed.

Next, when it is determined in S200 or S210 that the temperature or load current of the load resistance unit 62 is abnormal, the process shifts to S220, the switch unit 64 is switched to the off state, and the display unit 84 shows the abnormal state. Executes the error processing to be displayed and ends the control processing.

Further, when it is determined in S190 that the on period W2 has elapsed, the process shifts to S230, the switch unit 64 is switched to the off state, and the energization of the load current is stopped. Then, in the following S240, it is determined whether or not the period W3 of the energization execution control set as the timer value in S140 has elapsed, and if the period W3 has not elapsed, the process proceeds to S110. Further, when it is determined in S240 that the period W3 of the energization execution control has elapsed, the process shifts to S260.

In S260, as in S110, the operation mode currently set by the operation of the operation unit 82 is checked, and the process shifts to S270. Then, in S270, it is determined whether or not the operation mode has been changed, and if the operation mode has been changed, the process proceeds to S120.

Further, if it is determined in S270 that the operation mode has not been changed, the operation mode shifts to S280, and the interlocking operation command transmitted from the transmitter 42 of the circular saw 10 is transmitted by the receiving unit 80 in the receiving unit 80 as in S150. Determine if a signal is being received.

Then, if the command signal is not received, the process proceeds to S110, and if the command signal is received, the process proceeds to S290, and after it is determined in S240 that the period W3 has elapsed, the timer value is set in S140. It is determined whether or not the energization stop control period W4 set as has elapsed.

Then, when it is determined in S290 that the energization stop control period W4 has elapsed, the process proceeds to S110, and when it is determined that the energization stop control period W4 has not elapsed, the process proceeds to S260.

In this way, by executing the control process by the control unit 70 in the procedure shown in FIG. 4, the on / off state of the switch unit 64 is changed according to the operation mode set by the user by operating the operation unit 82. It is switched in synchronization with the voltage change of the AC voltage.

Further, the control pattern of the switch unit 64 in each of the operation modes 1 to 3 is preset as shown in FIG. 3, and the switch unit 64 has a predetermined time ratio every 1/2 cycle of the AC voltage. Is turned on and off.

Therefore, according to the interlocking adapter 50 of the present embodiment, the amount of load current (in other words, the effective current) in the load resistance portion 62 in order to operate the dust collector 20 in interlocking operation with the Marunoco 10 as compared with the conventional interlocking adapter described above. ) Can be reduced to reduce power consumption. Further, since the load current flowing through the load resistance unit 62 can be reduced, the amount of heat generated by the load resistance unit 62 can be suppressed and the interlocking adapter 50 can be miniaturized.

Further, as the operation mode of the interlocking adapter 50, a plurality of modes 1 to 3 are set according to the detection characteristic of the load current of the dust collector 20 interlocked and operated by the interlocking adapter 50, and the user can use the operation unit. The operation mode can be selected by operating 82.

Therefore, the user selects the operation mode of the interlocking adapter 50 according to the type of the dust collector 20 to minimize the energization period of the load current flowing through the load resistance unit 62 for interlocking operation of the dust collector 20. It can be set to suppress the power consumption of the interlocking adapter 50.

Further, in particular, in the mode 2, the control pattern of the switch unit 64 is set so that the energization execution control and the energization stop control are alternately executed according to the operation characteristics during the interlocking operation of the dust collector 20. Therefore, in the mode 2, the amount of current flowing through the load resistance unit 62 for the interlocking operation can be further reduced as compared with the other modes 1 and 3.

Further, the interlocking adapter 50 of the present embodiment can operate the dust collectors 20 of a plurality of types in an interlocking operation by operating the operation unit 82 to switch the operation mode, so that the usability by the user can be improved.
[Modification example]
Although one embodiment of the present disclosure has been described above, the interlocking adapter 50 of the present disclosure is not limited to the above embodiment and can be realized by various modifications.

For example, in the above embodiment, a plurality of operation modes corresponding to the load current detection characteristics on the dust collector 20 side are set according to the type of the dust collector 20, and the user selects one of the plurality of operation modes. Explained as what to do.

On the other hand, as shown in FIG. 5, as the control pattern of the switch unit 64, one control pattern may be set in which the load current is detected by the various dust collectors 20 and the interlocking operation is determined.

Then, in this way, when a command for interlocking operation is received from the circular saw 10, the on / off state of the switch unit 64 may be switched by one preset control pattern, and the operation mode may be set. It is possible to improve the usability of the user by eliminating the need for changes.

Therefore, next, as a modification of the above embodiment, a control process of turning the switch unit 64 on and off according to the control pattern of FIG. 5 and causing a load current to flow to the load resistance unit 62 will be described.

The control pattern of the switch unit 64 shown in FIG. 5 is set so that the on period for turning on the switch unit 64 occurs twice every 1/2 cycle of the AC voltage.
Further, the second ON period (the energization ON period in the latter half) is set so that the load current alternately switches between a large current and a small current every predetermined period W5 and W6 longer than one cycle of the AC voltage. There is.

That is, in the period W5, the switch unit 64 is turned on every 1/2 cycle of the AC voltage, and in the first half of the 1/2 cycle, the switch unit 64 is turned on only for the same on period W2 as the mode 3 of the above embodiment, and in the latter half of the 1/2 cycle. The switch unit 64 is turned on only for the same on period W2 as in the mode 2 of the above embodiment.

Further, in the period W6, the switch unit 64 is turned on every 1/2 cycle of the AC voltage, and in the first half of the 1/2 cycle, the switch unit 64 is turned on only for the same on period W2 as the mode 3 of the above embodiment, and in the latter half of the 1/2 cycle. The switch unit 64 is turned on only for the same on period W8 as in mode 1 of the above embodiment.

Therefore, if the switch unit 64 is turned on and off in the control pattern of the modified example, the load current energized by switching the operation mode in the above embodiment can be flowed in one control pattern.

The setting data of the control pattern of the period W5 includes an off period W1 that turns off the switch unit 64 after detecting the zero cross point, an on period W2 that turns on the switch unit 64 after the lapse of the off period W1, and an on period W2. After the lapse, the off period W3 for turning off the switch unit 64 and the on period W4 for turning on the switch unit 64 until the next zero crossing point after the lapse of the off period W3 are set.

Further, the setting data of the control pattern of the period W6 is the same as the setting data in the off period W1 after the zero cross point detection and the on period W2 in the period W5, and the switch unit 64 is turned off after the on period W2 elapses. The off period W7 is longer than the off period W3 in the period W5, and after the lapse of the off period W7 , the on period W8 that turns on the switch unit 64 until the next zero crossing point is shorter than the on period W4 in the period W5. Is set to.

As a result, in the period W6, the amount of the load current flowing in the half cycle of the AC voltage is reduced as compared with the period W5.
Next, the control process executed by the control unit 70 when the switch unit 64 is turned on and off and a load current is passed through the load resistance unit 62 in the control pattern shown in FIG. 5 will be described.

As shown in FIGS. 6A and 6B, in this control process, first, the receiving unit 80 determines whether or not the interlocking operation command signal transmitted from the transmitter 42 of the circular saw 10 is received by the receiving unit 80. By doing so, it waits for the command signal of the interlocking operation to be received.

Then, if the command signal for the interlocking operation is received, the process proceeds to S320, and the current voltage value Vnow of the AC voltage is read from the power supply voltage detection unit 76.
Next, in S330, the current voltage value Vnow read in S320 is used to correct the periods W1 to W4, W7, and W8 defined by the control pattern.

This correction is a process for preventing the load current flowing through the load resistance portion 62 from fluctuating due to the voltage fluctuation of the AC voltage, and is the reference voltage value Vref corresponding to the setting data of the control pattern as in the above-mentioned S130. And W1 to W4, W7 and W8 are corrected for each period based on the ratio of the current voltage value to Vnow.

Further, in S330, the corrected periods W1 to W4, W7 and W8 are set as timer values for timing by the timer.
Next, in S340, the periods W5 and W6 for high current energization and small current energization are read from the setting data of the control pattern, and each period W5 and W6 are set as timer values for timing with a timer.

In this way, when the timer values of W1 to W8 are set for each period, the process shifts to S350, and the zero cross point is detected by determining whether or not the zero cross point of the AC voltage is detected by the zero cross detection unit 68. stand by.

Further, when the zero cross point is detected, the process proceeds to S360, and after that, it is determined whether or not the off period W1 set as the timer value has elapsed, and the process waits for the off period W1 to elapse.

Then, when it is determined in S360 that the off period W1 has elapsed, the process shifts to S370, the switch unit 64 is switched from the off state to the on state, and the load current is energized to the load resistance unit 62. Move to S380.

In S380, it is determined in S370 whether or not the ON period W2 set as the timer value has elapsed after the switch unit 64 is switched to the ON state. Then, when it is determined in S380 that the on period W2 has not elapsed, the process proceeds to S390, and it is determined whether or not the temperature of the load resistance unit 62 detected by the temperature detection unit 78 is normal. do.

In S390, the temperature of the load resistance unit 62 is lower than the upper limit temperature, and when it is determined to be normal, the process shifts to S400 and the load current detected by the current detection unit 66 is normal or not. Judge. Then, in S400, when the load current is lower than the upper limit value and it is determined to be normal, the process shifts to S380 again, and it is determined whether or not the on period W2 has elapsed.

If it is determined in S390 or S400 that the temperature or load current of the load resistance unit 62 is abnormal, the process shifts to S470, the switch unit 64 is switched to the off state, and the abnormal state is displayed on the display unit 84. The error processing to be performed is executed, and the control processing is terminated.

Further, when it is determined in S380 that the on period W2 has elapsed, the process shifts to S410, the switch unit 64 is switched to the off state, and the energization of the load current is stopped. Then, in the subsequent S420, after the switch unit 64 is turned off in S410, it is determined whether or not the off period W3 set as the timer value has elapsed, and the process waits for the off period W3 to elapse.

When it is determined in S420 that the off period W3 has elapsed, the process shifts to S430, the switch unit 64 is switched to the on state, and in the subsequent S480, the switch unit 64 is switched to the on state, and then the timer value is set. It is determined whether or not the set on period W4 has elapsed.

Then, when it is determined in S480 that the on period W4 has not elapsed, the process shifts to S450, and it is determined whether or not the temperature of the load resistance unit 62 detected by the temperature detection unit 78 is normal. do.

Further, in S450, the temperature of the load resistance unit 62 is lower than the upper limit temperature, and when it is determined to be normal, the process shifts to S460, and the load current detected by the current detection unit 66 is normal. Judge whether or not.

Then, in S460, when the load current is lower than the upper limit value and it is determined to be normal, the process shifts to S480 again, and it is determined whether or not the ON period W4 set as the timer value has elapsed. ..

If it is determined in S450 or S460 that the temperature or load current of the load resistance unit 62 is abnormal, the process proceeds to S470, error processing is executed, and the control processing is terminated.
Next, when it is determined in S480 that the on period W4 set as the timer value has elapsed, the process shifts to S490, the switch unit 64 is switched to the off state, and in the subsequent S500, the interlocking operation is performed by the receiving unit 80. Judges whether or not the command signal of is received.

If it is determined in S500 that the interlocking operation command signal has not been received, the process proceeds to S310, and if it is determined that the interlocking operation command signal has been received, the process proceeds to S510 and the timer for the period W5. Set 0 seconds as the value.

Then, in the subsequent S530, after it is determined that the period W5 has elapsed, it is determined whether or not the period W6 set as the timer value has elapsed. Then, when it is determined in S530 that the period W6 has not elapsed, the current voltage value Vnow of the AC voltage is read from the power supply voltage detection unit 76 in S580, and the read current voltage is read in the subsequent S590. The values Vnow are used to correct the periods W7 and W8 specified in the control pattern.

Further, in S590, the corrected periods W7 and W8 are set as timer values of the periods W3 and W4, and the process shifts to S570.
In S590, the corrected periods W7 and W8 are set as the timer values of the periods W3 and W4 by changing the control pattern of the switch unit 64 to the control pattern for energizing a small current, and from S350 to the above-mentioned. This is so that the switch unit 64 can be driven by the changed control pattern in the process of S490.

Next, when it is determined in S530 that the period W6 has elapsed, the process proceeds to S540, the timer values of the periods W5 and W6 are set, and then the period W6 is set. Further, even if it is determined in S510 that the period W5 has not elapsed, the process shifts to S550.

Then, in S550, the current voltage value Vnow of the AC voltage is read from the power supply voltage detection unit 76, and in the subsequent S560, the read current voltage value Vnow is used for the period W3, W4 specified by the control pattern. To correct.

Further, in S560, the corrected period W3 and W4 are set as the timer values of the periods W3 and W4, and the process shifts to S570. Further, in S570, the periods W1 and W2 are corrected based on the current voltage value Vnow read in S580 or S550, and the timer values of the periods W1 and W2 are set. Then, when the process of S570 is executed, the process shifts to S350 and the processes after S350 are executed.

By executing the control processes of FIGS. 6A and 6B in this way, the switch unit 64 is controlled by the control pattern shown in FIG. 5, and a plurality of different types of dust collectors 20 are used as the circular saw 10 in the load resistance unit 62. A load current that can be operated in conjunction with each other can be passed.
[Second Embodiment]
Next, a second embodiment of the present disclosure will be described.

The interlocking adapter of the present embodiment has substantially the same configuration as the interlocking adapter 50 of the first embodiment, and the difference from the first embodiment is that the adapter main body 54 has a fan for cooling the load resistance portion 62. Is provided.

Therefore, in the present embodiment, the points different from those of the first embodiment such as the driving method of the fan will be described, and the description of the same parts as those of the first embodiment will be omitted.
As shown in FIG. 7, the adapter main body 54 is provided with a fan motor 92 in which a cooling fan is integrally assembled. Therefore, the adapter main body 54 is provided with a drive circuit 94 for driving the fan motor 92 by receiving power supply from the control power supply unit 74.

The drive circuit 94 is turned on by the FET 96 provided in the energization path to the fan motor 92 and the drive signal from the control unit 70, the gate of the FET 96 is set to a low level, and the transistor 98 is turned on. , And resistance.

Further, the fan motor 92 is configured to output a pulse signal according to the rotation of the motor, and the pulse signal (rotation pulse) is input to the control unit 70.
Further, in the energization path from the full-wave rectification unit 60 to the load resistance unit 62, a protection switch 65 is provided in addition to the energization control switch unit (hereinafter, energization switch) 64 and the current detection unit 66. There is. The protection switch 65 is provided so that the energization path to the load resistance portion 62 can be cut off even if the energization switch 64 fails.

Further, the display unit 84 includes a mode display unit 84A for displaying the operation mode by lighting three LEDs, and an error display unit 84B for displaying an error by lighting one LED.

Next, the control unit 70 executes the control process in substantially the same procedure as in the first embodiment, but in the present embodiment, since the fan motor 92 is provided, as shown in FIG. 8, in S140. After setting the timer value, the fan motor control process of S600 is executed.

Further, after executing the fan motor control process of S600, the process proceeds to S800, the failure diagnosis process of the switch unit including the energization switch 64 and the protection switch 65 is executed, and the process proceeds to S150.

Then, when it is determined in S160 that the zero cross point of the AC voltage is detected by the zero cross detection unit 68, the process proceeds to S165, and the fan motor 92 or the switch unit is subjected to the fan motor control process or the switch unit failure diagnosis process. Determine if a failure has been detected.

If it is determined in S165 that the fan motor 92 and the switch unit are normal, the process shifts to S170, and if it is determined in S165 that the fan motor 92 or the switch unit is out of order, the system shifts to S220. Then, the LED of the error display unit 84B is turned on.

In S220, even when the detection temperature or the detection current is determined to be abnormal in S200 or S210, the LED of the error display unit 84B is turned on to display an error.
Further, since the energization switch 64 and the protection switch 65 are provided in the energization path to the load resistance unit 62, the protection switch 65 is used when controlling the energization of the load current in S180 and S230. Hold it in the on state and turn on / off the energizing switch 64.

Then, when it is determined in S150 that the command signal for interlocking operation has not been received by the receiving unit 80, the energizing switch 64 and the protection switch 65 are turned off in S250, and the process proceeds to S110. ..

Next, the fan motor control process executed in S600 will be described.
As shown in FIG. 9, in the fan motor control process, first, in S610, it is determined whether or not the fan motor 92 is currently being driven. Then, if the fan motor 92 is not being driven, the process proceeds to S620, and it is determined whether or not the interlocking operation command signal is received by the receiving unit 80.

When it is determined in S620 that the command signal has been received, the fan motor 92 is driven in S630 to temporarily end the fan motor control process. Further, if it is determined in S620 that the command signal has not been received, the fan motor control process is terminated as it is.

Next, when it is determined in S610 that the fan motor 92 is currently being driven, the process shifts to S640, and the fan motor 92 rotates normally based on the rotation pulse input from the fan motor 92. Judge whether or not.

Then, when it is determined in S640 that the fan motor 92 is rotating normally, it shifts to S650, clears the stop time measurement count, and shifts to S660. In S660, it is determined whether or not the temperature of the load resistance unit 62 detected by the temperature detection unit 78 is a high temperature equal to or higher than a predetermined temperature.

When the load resistance unit 62 is determined to be hot in S660, the load resistance unit 62 shifts to S670, clears the time count without a command signal, and temporarily ends the fan motor control process. Further, if it is determined in S660 that the load resistance unit 62 is not at a high temperature, the process shifts to S680, and it is determined whether or not the interlocking operation command signal is received by the receiving unit 80.

Then, when it is determined in S680 that the command signal has been received, the process proceeds to S670, the time count without the command signal is cleared, and the fan motor control process is temporarily terminated. Further, when it is determined in S680 that the command signal has not been received, the process shifts to S690, the time count without command signal is updated (incremented), and the process shifts to S700.

In S700, it is determined from the value of the time count without command signal updated in S690 whether or not the time during which the command signal is not received has elapsed for a predetermined time (T1) or more. Then, if the predetermined time (T1) or more has elapsed, the process proceeds to S710, the driving of the fan motor 92 is stopped, and the fan motor control process is temporarily terminated. Further, if it is determined in S700 that the time for which the command signal is not received has not elapsed for a predetermined time (T1) or more, the fan motor control process is temporarily terminated as it is.

The time count without a command signal is cleared not only when the command signal is received but also when the load resistance unit 62 is at a high temperature, so that the load resistance unit 62 becomes lower than the predetermined temperature. , Not updated (incremented).

Therefore, when the load resistance unit 62 is at a high temperature, the fan motor 92 continues to rotate, the temperature of the load resistance unit 62 drops, and the fan motor 92 is stopped when the time during which the command signal is not received elapses for a predetermined time (T1) or more. Will be.

Next, if it is determined in S640 that the fan motor 92 is not rotating normally, that is, if the fan motor 92 is stopped or rotating at an extremely low speed, the process proceeds to S720. The stop time measurement count is updated (incremented).

Then, in the following S730, it is determined from the value of the stop time measurement count whether or not the stopped state of the fan motor 92 (specifically, the state of being stopped or rotating at an extremely low speed) is continued, and the fan motor 92 is determined. If the stopped state of is not continued, the process shifts to S660.

Further, if it is determined in S730 that the stopped state of the fan motor 92 (specifically, the state of being stopped or rotating at an extremely low speed) is continued, the process shifts to S740 and the fan motor 92 fails. It detects it, stores it, and shifts to S710.

That is, when the stopped state of the fan motor 92 continues for a certain period of time or more, it is determined that the fan motor 92 is out of order, and the driving of the fan motor 92 is stopped.
As described above, in the fan motor control process, when the receiving unit 80 receives the command signal for the interlocking operation, the driving of the fan motor 92 is started, and then the command signal is not received and continues for a predetermined time (T1) or more. Then, the drive of the fan motor 92 is stopped. Further, when the temperature of the load resistance portion 62 is high, the driving of the fan motor 92 is continued, and when the temperature of the load resistance portion 62 drops and a predetermined time (T1) or more elapses, the driving of the fan motor 92 is stopped. do.

Therefore, according to the present embodiment, even if the load resistance portion 62 is energized for interlocking operation, it is possible to suppress the temperature rise of the adapter main body 54 due to the heat generated by the load resistance portion 62. Further, it is possible to suppress the temperature rise of the adapter main body 54 due to the heat of the load resistance portion 62 after the drive of the fan motor 92 is stopped.

Next, the switch section failure diagnosis process executed in S800 will be described.
As shown in FIG. 10, in the switch unit failure diagnosis process, in S810, the command signal is received by the receiving unit 80, and it is determined whether or not the state without the command signal has changed to the state with the command signal. do.

Then, when it is determined in S810 that there is a state change from no command signal to yes, the process shifts to S820, and in S810, when it is determined that there is no state change, the switch unit failure diagnosis process is terminated. do.

In S820, the energization switch 64 is turned on and the protection switch 65 is turned off to shift to S830. Then, in S830, the current is not detected by the current detection unit 66, and the protection switch 65 turned off determines whether or not the energization path of the load current can be normally cut off.

When it is determined in S830 that the current detection by the current detection unit 66 is normal, the process proceeds to S840, the energization switch 64 is turned off, the protection switch 65 is turned on, and the process proceeds to S850. Then, in S850, the current is not detected by the current detection unit 66, and the energization switch 64 turned off determines whether or not the energization path of the load current can be normally cut off.

When it is determined in S850 that the current detection by the current detection unit 66 is normal, both the energization switch 64 and the protection switch 65 are determined to be normal, and the process proceeds to S860. Then, in S860, the energization switch 64 and the protection switch 65 are turned off to end the switch unit failure diagnosis process.

If the current detection unit 66 determines that the current detection by the current detection unit 66 is abnormal in S830 or S850, the protection switch 65 or the energization switch 64 is out of order. The failure of the part is memorized, and it shifts to S860.

That is, in the switch unit failure diagnosis process, either the energization switch 64 or the protection switch 65 is turned off, and it is determined whether or not the load current is detected by the current detection unit 66 to turn it off. Detects the failure of the switched part in the state.

Then, when the failure of the energization switch 64 or the protection switch 65 is detected in the switch section failure diagnosis process, or the failure of the fan motor 92 is detected in the fan motor control process, the determination process of S165 is performed. A failure is determined, and energization to the load resistance unit 62 is prohibited. Further, in this case, an error is displayed on the error display unit 84B in the error processing of S220.

Therefore, when the dust collector 20 cannot be operated in conjunction with the dust collector 20, the user can confirm that the cause is a failure of the interlocking adapter 50 by the error display of the error display unit 84B.

In the error processing in S220, when displaying an error, the energization to the load resistance unit 62 is not only stopped, but is continued while the receiving unit 80 receives the command signal for interlocking operation. It is advisable to display an error. Further, the error display may be continuously performed from the time when the receiving unit 80 stops receiving the command signal for the interlocking operation until a certain period of time elapses.

By doing so, even if the user is at a position away from the interlocking adapter 50 and the error display cannot be confirmed immediately, the user can be notified of the failure of the interlocking adapter 50. Further, in S220, when displaying an error, the error may be notified by sound, such as sounding a buzzer at the same time.

Further, in the error processing in S220, the failure content may be notified by changing the error display method, the buzzer sounding pattern, or the like according to the detected failure content. Specifically, for example, a fan failure is notified by lighting red or a buzzer sounds, and a switch failure is notified by blinking red or an intermittent sound of a buzzer. You may change it. As a result, the user can detect the content of the failure.

Further, the error processing in S220 is executed even when the power supply voltage detected by the power supply voltage detection unit 76 is out of the operation guarantee range or when the frequency of the power supply voltage is out of the operation guarantee range. You may do it.

Further, the error processing in S220 may not only display the error but also notify the tool side of the error by wireless communication. By doing so, the error can be notified on the tool side, and the user can more reliably detect the failure of the interlocking adapter 50 by the notification.

Next, the structure of the interlocking adapter 50 (specifically, the adapter main body 54) of the present embodiment will be described.
As shown in FIG. 11, the adapter main body 54 is configured by housing each of the above-mentioned parts including the load resistance part 62 and the fan motor 92 in the rectangular housing 100.

The housing 100 is divided into an upper case 101 and a lower case 102, and the openings of these two cases 101 and 102 are overlapped and connected with screws to form a single housing having an internal space. Assembled.

As shown in FIG. 11A, a protective cover 80A that covers the receiving unit 80 housed in the housing 100 from the outside is provided on the outer wall surface of the upper case 101 facing the lower case 102.

On the other hand, as shown in FIG. 12, the receiving unit 80 is attached to the connector 86A on the receiving input unit 86 side in the housing 100. Therefore, the user can attach / detach the receiving unit 80 to / from the connector 86A by opening the protective cover 80A.

Further, as shown in FIG. 11B, the LED constituting the mode display unit 84A and the error display unit 84B and the switch constituting the operation unit 82 are located on the side wall along the longitudinal direction of the housing, which is located below in FIG. 11A. The assembled operation panel 85 is provided.

The receiving unit 80 and the operation panel 85 are arranged at positions biased in one direction (left direction in the figure) from the central portion in the longitudinal direction of the housing. Then, as shown in FIGS. 11A to 11C, the fan motor 92 rotates on the two outer wall surfaces provided with the receiving unit 80 and the operation panel 85 and on the outer wall surface facing the upper case 101 in the lower case 102. An intake port 104 for sucking outside air into the housing is provided.

The intake port 104 is arranged on each outer wall surface at a position deviated from the central portion in the longitudinal direction of the housing 100 to the side opposite to the receiving unit 80 and the operation panel 85 (to the right in the figure).
As shown in FIG. 12, the load resistance portion 62 is arranged in the housing 100 at a position biased from the longitudinal center portion of the housing 100 to the side opposite to the receiving unit 80 and the operation panel 85. Because it is.

That is, in the present embodiment, the load resistance portion 62 in the housing 100 is surrounded by the intake ports 104 provided on the three outer wall surfaces of the housing 100 from three directions, and the load resistance portions 62 in the housing 100 are enclosed in the housing 100 from each intake port 104. The sucked outside air directly hits the load resistance portion 62.

Further, as shown in FIG. 11E, in the housing 100, the air inside the housing 100 is provided by the rotation of the fan motor 92 on the side wall on the one end side in the longitudinal direction (one end side in the right direction in the figure) where the intake port 104 is provided. Is provided with an exhaust port 105 for discharging the air to the outside. The fan motor 92 is arranged between the load resistance portion 62 and the exhaust port 105 in the housing 100.

Therefore, the outside air sucked from the intake port 104 on each outer wall surface due to the rotation of the fan motor 92 is discharged from the exhaust port 105 through the fan motor 92 after cooling the load resistance portion 62 in the housing 100. Will be done.

Therefore, even if the load resistance portion 62 generates heat due to the energization of the load current, it is possible to suppress the high temperature air from staying in the housing 100 and efficiently dissipate the heat of the load resistance portion 62.
Further, since the intake port 104 is provided on the three outer wall surfaces of the housing 100, when the interlocking adapter 50 is attached to an electric device such as a dust collector 20, all of the intake ports 104 are not blocked. .. Therefore, according to the present embodiment, it is possible to secure a path for sucking outside air in the housing 100 and cool the load resistance portion 62.

Further, in the housing 100, an insertion hole 107 for inserting the power cord 53 is provided in the side wall where the exhaust port 105 is provided, and the insertion hole 107 is for protecting and fixing the power cord 53. Protective member 106 is fitted.

Therefore, the power cord 53 is pulled out from the insertion hole 107 of the housing 100 in a state of being fixed to the housing 100 by the protective member 106, and when an object exists in the vicinity of the exhaust port 105, the exhaust port 105 Can be prevented from being blocked by an object.

That is, when the object is at a position facing the exhaust port 105, the object hits the power cord 53 before closing the exhaust port 105, so that it is possible to prevent the exhaust port 105 from being blocked by the object.

Therefore, according to the present embodiment, it is possible to secure an exhaust path for the internal air by the exhaust port 105 and suppress the cooling effect of the load resistance portion 62 from being impaired.
Further, as shown in FIG. 12, a circuit board 71 on which various electronic components constituting the control unit 70 and the like are mounted is housed in the housing 100 in addition to the load resistance unit 62. Therefore, in the housing 100, the load resistance portion 62 and the circuit board 71 are connected via the lead wire 120 shown by the dotted line in FIG.

By the way, when the lead wire 120 hits the load resistance portion 62, it is conceivable that the coating of the lead wire 120 deteriorates due to the heat of the load resistance portion 62. Then, when the coating of the lead wire 120 deteriorates, the energization path of the load current may come into contact with the surrounding conductor, and the interlocking adapter 50 may fail.

In particular, in the present embodiment, as shown in FIG. 13, since the load resistance portion 62 is composed of the resistor 62A and the heat sink 62B for heat dissipation, the heat of the load resistance portion 62 covers the lead wire 120. When it deteriorates, the energization path of the load current comes into contact with the heat sink 62B and fails.

Therefore, in the lower case 102 and the upper case 101, a lead wire 120 arranged between the circuit board 71 and the load resistance portion 62 and wired to the circuit board 71 side is a load resistance portion on the inner walls facing each other. Ribs 121 and 122 are provided to prevent contact with 62.

Further, if the ribs 121 and 122 are composed of one plate, the lead wire 120 can be more reliably prevented from coming into contact with the load resistance portion 62. However, in this way, the air flow path around the load resistance portion 62 is blocked, and the cooling effect is impaired. Therefore, the ribs 121 and 122 are partially cut out and separated into a plurality of ribs 121 and 122 so that air can flow around the load resistance portion 62 and the load resistance portion 62 can be cooled. ing.

On the other hand, as shown in FIGS. 11D, 12 and 13, in the housing 100, the user picks and rotates the head on the side wall opposite to the side wall where the exhaust port 105 is provided. An L-shaped hook 112 is fixed via a screw 110 that can be formed.

The hook 112 is slid so that one of the two L-shaped plate surfaces is fixed to the side wall of the housing 100 via the screw 110 and the other can be brought into contact with and separated from the housing 100. , The insertion hole of the screw 110 is a long hole 112A.

Therefore, the hook 112 can be fixed along the outer wall of the housing 100 as shown in FIG. 14A, or can be fixed in a state of being pulled out from the housing 100 as shown in FIG. 14B.

Then, in the state where the hook 112 is pulled out from the housing 100, the adapter main body 54 can be fixed at a desired position by hooking the hook 112 on a hole or a protrusion. For example, as shown in FIG. 15, when the dust collector 20 has a hole 36 in which the hook 112 can be hooked, the hook 112 is pulled out from the housing 100 and hooked in the hole 36 to hook the adapter main body 54 to the dust collector 20. Can be attached to.

As shown in FIG. 13, the screw 110 can be fixed to the housing 100 by screwing and tightening the screw 110 to the nut 114 provided on the housing 100 side.
In this case, if the nut 114 is provided in the housing 100, the nut 114 may fall off and the nut 114 may move in the housing 100 when the screw 110 and the nut 114 are unscrewed. Then, when the nut 114 moves the housing 110, the circuit in the housing described above may be short-circuited, so that the housing 100 must be disassembled for repair work.

Therefore, in the present embodiment, as shown in FIG. 13, a gap 109 into which the nut 114 can be inserted from the outside of the housing 100 is provided in the housing 100, and the nut 114 is inserted into the gap 109 to insert the nut 114. Can be fixed to the housing 100.

As a result, even if the screw 110 and the nut 114 are disengaged, it is not necessary to perform troublesome repair work such as disassembling the housing 100.
Further, the gap 109 is concealed by a hook 112 attached to the housing 100 via the screw 110 so as to prevent the nut 114 from falling off when the screw 110 is removed from the nut 114.

Next, in the housing 100, rod-shaped connecting portions 108 for inserting the screws connecting the upper case 101 and the lower case 102 are provided on both sides of the housing 100 sandwiching the screw 110 and the hook 112. As shown in FIG. 16, a gap through which the fixing band 130 can be inserted is formed between the connecting portion 108 and the housing 100.

Therefore, by passing the band 130 of a desired length through the gap between the connecting portion 108 and the housing 100, the adapter main body 54 can be attached to an electric device such as a dust collector 20 via the band 130. Further, in this case, the user can move the interlocking adapter 50 to a desired place by holding the band 130, so that the usability of the interlocking adapter 50 can be improved.

On the other hand, since the operation panel 85 to which the LED of the mode display unit 84A and the error display unit 84B and the switch of the operation unit 82 are assembled is arranged on one end side in the longitudinal direction of the housing 100, the user can use the adapter main body 54. The operation unit 82 can be operated while holding the.

Then, by operating the operation unit 82, the operation mode of the interlocking adapter 50 is switched, the lighting state of the LED constituting the mode display unit 84A is changed, and the operation mode after the switching is displayed.

Therefore, it is preferable that the LED of the mode display unit 84A is not hidden by the user's hand when the user grips the adapter main body 54 and operates the operation unit 82. Further, it is preferable that the LED of the error display unit 84B is not hidden by the user's hand when the user is holding the adapter main body 54.

Therefore, in the present embodiment, as shown in FIG. 11B, in the operation panel 85, the switch of the operation unit 82 is arranged at a position close to the center in the longitudinal direction of the housing 100, and the mode display unit 84A and the error display unit 84B are arranged. LED is arranged on the end side in the longitudinal direction of the housing 100.

Therefore, the user can easily check the lighting state of the LEDs of the mode display unit 84A and the error display unit 84B while holding the adapter main body 54, and as a result, the usability of the interlocking adapter 50 is improved. be able to.

Although the embodiments and modifications of the present disclosure have been described above, the present disclosure is not limited to the above-mentioned embodiments or modifications, and can be variously modified and carried out.
For example, in the above embodiment, the electric device for interlocking operation using the interlocking adapter 50 is the dust collector 20, and the working machine for interlocking operation of the dust collector 20 is the circular saw 10.

However, if the interlocking adapter 50 of the present disclosure is an electric device configured to detect the load current flowing through the outlet 32 and start the operation, it is used in the same manner as in the above embodiment and is interlocked with the working machine. be able to.

Further, the working machine for interlocking the electric equipment may be an electric working machine other than the circular saw 10, or may be a working machine driven by an engine or an air motor such as an engine cutter or an air grinder. In any case, it is necessary to equip the working machine with a device that outputs a command for interlocking operation at the time of operation.

However, the device that outputs the command for interlocking operation may be the transmitter 42 for wireless signal transmission as in the above embodiment, or may be a device that outputs the command signal via the signal line.
Further, in the above embodiment, the operation mode has been described as being able to be set via the operation unit 82 operated by the user, but the operation mode can be set / changed by using a mobile terminal or the like possessed by the user. It may be possible to carry out.
[Reference example]
By the way, in the above-described embodiment and modification, the electric device is described as being operated in conjunction with the working machine by passing the load current through the load resistance unit 62, but as shown in FIG. 17 or FIG. 18, the load current is applied. As the electric load to be passed, a capacitive load 58 made of a capacitor or the like may be used.

That is, in the interlocking adapter 50, the capacitive load 58 is provided in the input path of the AC voltage from the AC plug 52, and the switch unit 64 is turned on so that the AC current flows through the capacitive load.

With this configuration, an AC current (reactive current) whose phase is advanced by 90 ° with respect to the AC voltage can be passed through the capacitive load 58, and the load current can be passed through the electrical equipment with low loss. .. Therefore, by passing the load current, it is possible to suppress the occurrence of problems such as heat generation and to reduce the size of the interlocking adapter 50.

The interlocking adapter 50 shown in FIG. 17 is provided with a switch unit 64 in the output path of the rectified voltage from the full-wave rectifying unit 60, and the command signal from the receiving unit 80 is sent to the receiving input unit 86 configured by the light receiving element. Is configured to receive.

Then, when the light receiving element of the reception input unit 86 is turned on when the command signal is received, the DC voltage supplied from the control power supply unit 74 is applied to the bias circuit 202 connected to the gate of the switch unit 64. , The switch unit 64 is turned on, and the load current flows.

In this case, the bias circuit 202 can be configured by a voltage divider circuit of the resistors R1 and R2. Further, the control power supply unit 74 has a Zener diode ZD, a resistor R0 that causes a breakdown current to flow by applying a reverse bias voltage from the diode 72 to the Zener diode ZD, and a power supply voltage generated by the breakdown current flowing through the Zener diode ZD. It can be configured by using a diode C0 that stabilizes.

Therefore, if a capacitive load such as a capacitor is used as the electric load for passing the load current through the electric device, the configuration of the interlocking adapter 50 can be extremely simplified.
Further, the interlocking adapter 50 shown in FIG. 18 is configured by providing the interlocking adapter 50 shown in FIG. 17 with an oscillation unit 204 and a resistor R2 for converting a light receiving current flowing through a light receiving element of the receiving input unit 86 into a voltage. Has been done.

According to this interlocking adapter 50, by setting the oscillation frequency of the oscillation unit 204 to a frequency higher than the frequency of the AC voltage, the switch unit is switched multiple times for each cycle of the AC voltage at the output from the oscillation unit 204. 64 can be turned on and off.

Therefore, the energization period of the load current flowing through the capacitive load 58 can be shortened, and the load current can flow with lower loss.
In addition, a plurality of functions possessed by one component in the above embodiment or a modification may be realized by a plurality of components, or one function possessed by one component may be realized by a plurality of components. May be good. Further, a plurality of functions possessed by the plurality of components may be realized by one component, or one function realized by the plurality of components may be realized by one component. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above embodiment may be added or replaced with the configuration of the other above embodiment. It should be noted that all aspects included in the technical idea specified only by the wording described in the claims are embodiments of the present invention.

10 ... Marunoco, 20 ... Dust collector, 32 ... Outlet, 42 ... Transmitter, 50 ... Interlocking adapter, 52 ... AC plug, 53 ... Power cord, 54 ... Adapter body, 60 ... Full-wave rectifier section, 62 ... Load resistance section, 64 ... Switch unit (energization switch), 65 ... Protection switch, 66 ... Current detection unit, 68 ... Zero cross detection unit, 70 ... Control unit, 71 ... Circuit board, 72 ... Diode, 74 ... Control power supply unit, 76 ... Power supply voltage detection unit, 78 ... temperature detection unit, 79 ... overcurrent protection unit, 80 ... receiver unit, 82 ... operation unit, 84 ... display unit, 84A ... mode display unit, 84B ... error display unit, 85 ... operation panel, 86 ... Receive input unit, 88 ... Operation input unit, 90 ... Insulated power supply unit, 92 ... Fan motor, 94 ... Drive circuit, 100 ... Housing, 104 ... Intake port, 105 ... Exhaust port, 107 ... Insert hole.

Claims (15)

The electric device having an outlet for supplying AC power to the work machine, detecting the operation of the work machine from the load current flowing from the outlet to the work machine, and operating in conjunction with the work machine. It is an interlocking adapter that is attached to an outlet and receives an interlocking operation command wirelessly transmitted from the working machine when the working machine is operating, so that the electric device is operated in interlocking with the working machine.
An energization path including an electric load for passing the load current capable of detecting the operation of the work machine on the electric device side by an AC voltage supplied from the outlet.
A switch unit provided on the energization path to conduct / cut off the energization path,
A zero-cross detection unit that detects the zero-cross point of the AC voltage,
Upon receiving the interlocking operation command, the switch unit is turned on and off at a predetermined time ratio every 1/2 cycle of the AC voltage, which is the detection cycle of the zero cross point by the zero cross detection unit. A control unit that allows the load current to flow from the outlet to the electric load to operate the electric device in conjunction with the work machine .
Interlocking adapter with. The first aspect of the present invention, wherein the control unit is configured to turn on / off the switch unit so that the switch unit is in the ON state for a predetermined period once within 1/2 cycle of the AC voltage. Interlocking adapter. The first aspect of the present invention, wherein the control unit is configured to turn on / off the switch unit so that the switch unit is in the ON state for a predetermined period a plurality of times within a half cycle of the AC voltage. Interlocking adapter. When the control unit receives the command of the interlocking operation, the control unit receives a command.
During one cycle of the AC voltage or a predetermined control period longer than the one cycle, the switch unit is turned on and off to pass the load current from the outlet to the electric load, and energization execution control.
During one cycle of the AC voltage or a predetermined stop period longer than the one cycle, the switch unit is turned off to cut off the load current, and the energization stop control is performed.
The interlocking adapter according to any one of claims 1 to 3, wherein the above is alternately performed. The control unit is configured to select a control pattern for turning on / off the switch unit in response to a command for interlocking operation from a plurality of control patterns having different time ratios in accordance with a selection command from the outside. The interlocking adapter according to any one of claims 1 to 4. It is equipped with a full-wave rectifier that rectifies the AC voltage supplied from the outlet.
The interlocking adapter according to any one of claims 1 to 5, wherein the switch unit is provided in an output path of a rectified voltage from the full-wave rectifying unit. A voltage detector for detecting the voltage value of the AC voltage supplied from the outlet is provided.
The control unit is configured to adjust the time ratio based on the voltage value of the AC voltage detected by the voltage detection unit so that the lower the voltage value, the longer the on-time of the switch unit. The interlocking adapter according to any one of claims 1 to 6. As the electric load, a load resistance portion composed of a resistance capable of energizing the load current is provided.
The interlocking adapter according to claim 1 to 7, further comprising a fan for cooling the load resistance portion. The interlocking adapter according to claim 8, wherein the control unit is configured to drive the fan in synchronization with the interlocking operation command. 9. The control unit is configured to stop driving the fan after a predetermined cooling time elapses when the energization of the load current to the load resistance unit is stopped in accordance with the stop command of the interlocking operation. Interlocking adapter described in. The control unit monitors the temperature of the load resistance unit even after stopping the energization of the load current to the load resistance unit in accordance with the stop command of the interlocking operation, and if the load resistance unit is high temperature, the control unit may monitor the temperature of the load resistance unit. The interlocking adapter according to claim 9 or 10, which is configured to continue driving the fan. The control unit monitors whether or not the fan is rotating normally when the load current is applied to the load resistance unit, and if the fan rotation is abnormal, the control unit monitors the load resistance unit. The interlocking adapter according to any one of claims 8 to 11, which is configured to stop energization of the load current. The fan is housed in the housing of the interlocking adapter together with the load resistance portion.
Among the plurality of outer wall surfaces constituting the housing, one outer wall surface has an opening for sucking or discharging outside air into the housing and an insertion hole through which a power cord for connecting to the outlet is inserted. And are provided,
The interlocking adapter according to any one of claims 8 to 12, wherein the power cord is pulled out from the insertion hole to the outside of the housing. The openings for sucking or discharging the outside air into the housing include, among the plurality of outer wall surfaces constituting the housing, an outer wall surface provided with an insertion hole for the power cord, and two or more other outer wall surfaces. The interlocking adapter according to claim 13, which is provided in each of the above. The openings provided in the plurality of outer wall surfaces of the housing are arranged at positions facing the load resistance portion housed in the housing, and the fan is located between one of the openings and the load resistance portion. The interlocking adapter according to claim 14, which is arranged in.

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