JPS63191580A - Combination apparatus controller for power tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a control device for a power tool in conjunction with a power tool such as a tabletop quince, a grinder, a planer board, etc. to operate other combined equipment. It is.

(Prior art) Conventionally, in many cases, the suction hose of a dust collector is connected to the dust or cutting powder discharge part of the power tool, and work with the power tool is carried out while the dust collector is operating. Since power switches are installed separately for the tool and the dust collector, each time you start or stop working with a power tool, you have to turn both power switches on and off, making this operation extremely cumbersome. In particular, when the power tool is turned on and off relatively frequently, there is a drawback that the efficiency of working with the power tool is significantly reduced.

Therefore, in such cases, in order to avoid low F of work efficiency, the dust collector is often left without turning off the power, and in that case, power is wasted, especially since the dust collector has a relatively large power capacity. As a result, there was a problem in that not only wasted power consumption was large, but the noise was extremely noisy, which significantly degraded the surrounding working environment.

(Problem to be solved by the invention) As a countermeasure to this problem, for example, by making the power switch of the power tool and the power switch of the dust collector the same, the power tool and the dust collector can be started and stopped at the same time by operating one power switch. However, in that case, the power tools and dust collectors would be used for special purposes, and the original versatility of each would be lost. For example, the dust collector could not be used with other power tools, etc. The usage range is fixed, making it impossible to use each device effectively, and if the power supply voltages of both devices are different from each other, the specifications become even more complicated.

(Means for Solving the Problems) The present invention provides a power tool connection receptacle for connecting a power tool plug to a power source, a current transformer whose primary coil is a power circuit that connects the receptacle to a power source, A switching element that is turned on and off by the output from the current transformer, and a receptacle for connecting a combined device for connecting a combined device used together with the power tool to a power source via the switching element. This is a combined equipment control device for power tools.

(Function) In the power tool combination device control device configured as described above, the power tool combination device control device is connected to a power source,
The power tool is connected to the power tool connection receptacle, and the power tool combination device is connected to the power tool connection receptacle.

In this state, when the power switch of the power tool is turned on and the power tool is operated, an output is generated from the current transformer due to the load current of the power tool, the switching element is turned on, and the equipment for power tool 91 is activated. Moreover, when the power switch is turned off, the power tool is turned off and the output from the current transformer is also eliminated, and the switching element and the power tool combination device are also turned off.

As a result, the power tool and the combined equipment can be easily linked together while maintaining versatility without making the power tool and the combined equipment special specifications.

(Embodiment) Next, the configuration of a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

A power tool combination device control device 2 connected to a power source, for example, ACl 00V via a power cord 1, includes a power tool connection receptacle 3 and a combination device connection receptacle 4.
The power tool, in this case, the plug 7 attached to the power cord 6 of the electric planer 5 is inserted into the power tool connection receptacle 3, and the combination device, this In this case, the plug 10 attached to the power cord 9 of the dust collector 8 is inserted, and the suction hose 12 of the dust collector 8 is connected to the cutting waste discharge part 11 of the electric planer 5.

FIG. 2 is a block diagram of the power tool combined equipment control device 2, in which the current detection unit 13 detects load current conduction by turning on the electric planer 5, and the control circuit unit detects the load current. The dust collector 8 is activated by turning on the bidirectional switching element 15 via the electric planer 5, and the current detecting section 13 detects the load current interruption by turning off the electric planer 5, and the control circuit detects the load current interruption. By turning off the bidirectional switching element 15 via the section 14, the operation of the dust collector 8 is stopped.

Fig. 3 shows a specific electric circuit of the power tool combined equipment control system @2, and the line of the power cord 6 of the electric planer 5 connected to the power supply AC100V has a current detection function for detecting load current. As part 13, in this case, the current transformer CT
1 is attached, and the output from the current transformer 0-1 turns on the photocoupler PC1 using the Zener diode ZD1, capacitor C1, resistor R1, and diode D1 as DC power supplies.
Input to the base of the transistor Tr1 for off-control,
An off-delay circuit 16 consisting of a diode D2, a resistor R2, and a capacitor C2 is connected between the transistor Tri and the current transformer CTI, that is, when the output of the current transformer CTI is turned off, the charging energy of the capacitor C2 is transferred to the capacitor C2. An off-delay circuit 16 is connected to which the off-delay time is determined by discharging with a time constant determined by the input impedance of the transistor Tr1 and the resistance value of the resistor R2, and a current limiting resistor R3 is connected to the light emitting element circuit of the photocoupler PCI.
is connected, and the output from the photocoupler PC1 is input to the triac TR11 of the bidirectional switching element 15 via a trigger circuit formed by the light receiving element of the photocoupler PC1 and a resistor R4, and the output from the photocoupler PC1 is inputted to the triac TR11 of the bidirectional switching element 15. 'Turn on/off the dust collector 11t8 connected to the R source ΔC100V. Next, the operation of this embodiment will be explained.

The power source 1 of the power tool combined equipment control device 2, which is formed completely separately from the standard specification electric planer 5 and dust collector 8 that are used individually in this way, is connected to the power source A0100V, and Insert and connect the plug 7 of the electric can 5 into the receptacle 3 for connecting power tools, and collect dust in the receptacle 4 for connecting the combined equipment! With the plug 10 of the II 8 inserted and connected, and the suction hose 12 of the dust collector 8 connected to the cutting waste discharge part 11 of the electric plane 5, turn on the power switch (not shown) of the electric plane 5 to operate the electric plane 5. When this happens, an output is generated from the current transformer CT1 due to the load current of the electric planer 5, turning on the transistor Tr1, and the triac TRII is turned on via the photocoupler RC1.
is turned on and the dust collector 8 is activated.

Next, when the power switch of the electric plane 5 is turned off while the dust collector 8 is in operation, the output of the current transformer CT1 is turned off, but the charging energy of the capacitor C2 is combined with the capacitance of the capacitor C2, the input impedance of the transistor Tr1, and the resistance. During a time constant determined by the resistance value of R2, the transistor Tr1 remains on and then turns off, and then the triac TR[1 is turned off via the photocoupler PC1 to stop the operation of the dust collector 8.

As a result, when the power switch of the electric plane ±5 is turned off, the cutting waste discharge part 11 of the electric plane 5 and the suction hose 1 of the dust collector 8 are removed.
The cutting work by the electric planer 5 is stopped while the cutting waste remaining in the dust collector 2 is surely sucked into the dust collector 8, and the electric planer 5 and the dust collector 8 can be easily interlocked without special use of each. Can be done.

Next, FIG. 4 shows a second embodiment of the present invention, in which a plurality of power tool connection receptacles 21A to 21C are formed in the power tool combined equipment control device 2o, and each receptacle 21A to 21C is formed in the power tool combined equipment control device 2o. Power tools 22A~ connected separately to 21C
22G is detected by current transformers CT2A to CT2G for each receptacle 21A to 21C, each diode D
The transistor Trl is turned on via the diode OR consisting of 3 to D5, thereby each power tool 22A to 22
The configuration, operation, and effects are almost the same as those of the first embodiment, except that the common combined equipment 23 is easily linked even when the units C are operated individually.

Next, the configuration of a third embodiment of the present invention will be explained with reference to FIGS. 5 to 7.

In this case, this is an embodiment that can be used even when the power supply voltages of the power tool and the combined equipment used together are different from each other, and the combined power tool equipment t111tII device is connected to the electric power IA0200V via the power cord 31A. ff32
(7) 20OV side mounting [32A k: c. A power tool connection receptacle 33 is attached to the power tool connection receptacle 33, in which the power tool, in this case, the automatic planer 3
A receptacle 37 for connecting a combined device is inserted into the 100V side device 32B of the power tool combined device control device 32, into which the plug 36 attached to the power cord 35 of No. 4 is inserted and connected to the power source A0100V via the power cord 31B. A plug 40 attached to the power cord 39 of the combined equipment, in this case, the power tool 1!1tl138, is inserted into the receptacle 37 for connecting the combined equipment, and the 200V side device 32A of the combined equipment control device 32 for power tools is inserted. It is connected to the 100V side device 32B through an optical fiber 41, and the suction hose 43 of the dust collector 38 is connected to the cutting waste discharge section 42 of the automatic planer 34.

FIG. 6 is a block diagram of the power tool combined equipment control device 32, in which a current detection section 44 detects the load current energization caused by turning on the automatic planer 34, and the output from the current detection section 44 is sent to a modulation section. After modulation by 45, it is sent to a demodulator 46 via an optical fiber 41, and then sent to a control circuit 47.
When the bidirectional switching element f48 is turned on via the switch 138, the current detection section 44 detects load current interruption by turning off the automatic planer 34, and the modulation section detects the load current interruption. 45, the operation of the dust collector 38 is stopped by turning off the bidirectional switching element 48 via the optical fiber 41, the demodulating section 46, and the control circuit section 47.

FIG. 7 shows a specific electric circuit of the power tool combined equipment control device 32, in which a current detection unit is installed in the line of the power cord 35 of the automatic planer 34 connected to the AC 200V power supply to detect the load current. In this case, as 44, a current transformer CT3 is installed, and the output from the current transformer CT3 is inputted to the base of a transistor Tr2 connected to the DC power supply circuit 49 via a resistor R6, and the output from the current transformer CT3 is connected to the base of the transistor Tr2,
A diode D6 and a resistor R5 are connected between the current transformer CT3 and the current transformer CT3.
, and a capacitor C3, and a transistor Tr3 that turns on and off together with the transistor Tr2 is connected to an LED 51, which is a light emitting element forming the modulation section 45, and an optical signal from the LED 51 is transmitted through an optical fiber. The output from the photodiode 52 is input to the base of the transistor Tr4 via the amplifier 54 connected to the DC power supply circuit 53. In addition, a transistor r whose on/off is similarly controlled by the on/off of the transistor Tr4
An off-delay circuit 55 consisting of a diode D7, a resistor R9, and a capacitor C4 is connected between the capacitor C4 and the input impedance of the transistor r5. A photocoupler P is connected to an off-delay circuit 55 whose off-delay time is determined by discharging with a time constant determined by the resistance value of the resistor RIO, and is connected to the transistor Tr5 via a current-limiting resistor 11.
The output from C2 is sent to the bidirectional switching element ? It is input to the triac TRI2 gate terminal of 48 and controls on/off of the collector 38 connected to the power supply ACI OOV via the triac TRI2.

Next, the operation of this embodiment will be explained.

In this case, a power tool combined equipment control device 32 is formed completely separately from the standard automatic planer 34 and dust collector 38, which are used individually with different power supply voltages.
(7) 200VIllH position 32A (7) I source code 31
Connect Δ to the power supply C200V, insert and connect the insertion 36 of the automatic planer 34 to the power tool connection receptacle 33, and connect the power cord 31B of the 100V side device 32B of the power tool combined equipment control device 32 to the power supply A0100V. Connect and collect the gI machine 38 into the receptacle 37 for connecting the concomitant equipment.
After inserting and connecting the insert 40 of the automatic power pump 34 and connecting the suction hose 43 of the dust collector 38 to the cutting waste discharge part 42 of the automatic power pump 34, turn on the power switch (not shown) of the automatic planer 34 to operate the automatic planer 34. When this happens, an output is generated from the current transformer CT3 due to the load current of the automatic planer 34, turning on each transistor Tr2 and Tr3.
Triac rRI2 is turned on with 5, and collection 1711
3B is activated.

Next, when the dust collector 38 is in operation, the automatic planer 34 is
When the power switch is turned off, the output of the current transformer CT3 is turned off, but the charging energy of the capacitor 1t04 remains for a time constant determined by the capacitance of the capacitor C4, the input impedance of the transistor Tr5, and the resistance value of the resistor R10.
The transistor r5 remains on and then turns off, and then is connected to the triac rRI via the photocoupler PC2.
2 is turned off, and the operation of the dust collector 38 is stopped.

As a result, when the power switch of the automatic plane 34 is turned off, the cutting swarf remaining in the cutting waste discharge part 42 of the automatic plane 34 and the suction hose 43 of the dust collector 38 is reliably sucked into the dust collector 38, and the cutting operation by the automatic plane 34 is performed. stop,
Moreover, even if the automatic planer 34 and the dust collector 138 have different power supply voltages, they can be easily linked together without any special use.

(Effects of the Invention) The present invention provides a receptacle for connecting a power tool for connecting a power tool to a power source, a current transformer whose primary coil is a power circuit for connecting the receptacle to a power source, and a current transformer that connects the receptacle to a power source. for a power tool, comprising: a switching element that is turned on and off by an output from the power tool; and a receptacle for connecting a combined device for connecting a combined device used together with the power tool to a power source via the switching element. It is located in the control device for the combined equipment.

As a result, the present invention has the advantage that the power tool and the combined equipment can be easily linked together while maintaining versatility without making the power tool and the combined equipment special specifications.

[Brief explanation of the drawing]

1 is a perspective view of a first practical example of the present invention, FIG. 2 is a block diagram thereof, FIG. 3 is an electric circuit diagram thereof, and FIG. 4 is an electric circuit diagram of a second embodiment of the present invention. 5 is a perspective view of a third embodiment of the present invention, FIG. 6 is a block diagram thereof, and FIG. 7 is an electric circuit diagram thereof. 1.6.9...Power cord 2.32...Used equipment control device 3.33...Receptacle for power tool connection 4.37.
・Receptacle for connection of combined equipment 5 ・Electric planer 7.10.36.40 ・Plug-in 13.44 ・Current detection part 15.48 ・Bidirectional switching cable f34 ・Automatic planer application Person Makita Electric Manufacturing Co., Ltd. Agent Patent Attorney Oka 1) Hidehiko (3 others) Figure 6

Claims (2)

[Claims] (1) A receptacle for connecting the power tool to connect the power tool to the power source, a current transformer whose primary coil is the power circuit that connects the receptacle to the power source, and a current transformer that is turned on by the output from the current transformer. - A combined equipment control device for a power tool, comprising a switching element that is operated to turn off, and a combined equipment connection receptacle for connecting a combined equipment that is used together with the power tool to a power source via the switching element. (2) The combined equipment control device for a power tool according to claim 1, wherein the switching element has an off-time delay characteristic.