TW200821099A - Electric screwdriver and electric screwdriver instrument - Google Patents

Abstract

To provide a rechargeable electric screwdriver which is compact and light-weight, can be rapidly charged and can reduce a running cost, and an electric screwdriver instrument. The electric screwdriver 10 accommodates or houses (carries) all functions of the electric screwdriver except a charger in a housing 12 made of resin for example. The housing 12 has an approximately cylindrical tube 16 for rotatably supporting a bit holder 14 on an aperture on a front face and a grip 18 branching downwardly from the tube 16 with an approximately right or obtuse angle from the side of the bit holder 14. A brake switch, a clutch, a gear, a motor, a printed wiring board, an electric double layer capacitor or the like are accommodated in the tube 16.

Description

200821099 IX. Description of the Invention: » Technical Field of the Invention The present invention relates to a rechargeable electric drive tool and an electric drive tool device. [Prior Art] - Generally, the 'chargeable electric drive tool uses a battery (secondary battery) such as a nickel-cadmium battery in the driving power supply. When the battery is gradually consumed and the torque is reduced, that is, the screw-retaining ability is lowered. Recharge the battery at any time with an external power source to restore its torque. However, the battery has many problems such as bulky, long charging time, short charge and discharge life, use of heavy metals, harmful substances, etc., and has adverse effects on the environment. Therefore, regarding the driving power supply of the electric drive tool for electric charging, the electric double layer capacitor Recently caught the eye. The electric double-layer capacitor is the opposite of the battery, and has the advantages of small size, light weight, rapid charging, long life of charge and discharge, no use of heavy metals, harmful substances, etc., which are beneficial to the environment. When the electric double-layer capacitor is used in the driving power supply, it is used in parallel with the battery to manage the charging voltage of the electric double-layer capacitor in conjunction with the output voltage of the battery (for example, please refer to the patent literature). 1). [Patent Document 1] Practical Application Registration No. 3100119 SUMMARY OF INVENTION [Problems to be Solved by the Invention] 2269-9098-PF; Ahddub 5 200821099 As described above, the conventional rechargeable electric drive tool is provided with an electric double layer capacitor. In the case of a battery, the charging voltage of the electric double layer capacitor is managed by the output voltage of the battery, so that the charger and the charging control circuit dedicated to the electric double layer capacitor are not required. However, from another point of view, it is found that the control technology for correctly charging the electric double layer capacitor to the rated voltage is not established, and the charging operation becomes convenient for the short-term charge and discharge cycle unique to the electric double layer capacitor. Technology has not been produced. In summary, having a battery at the same time does not take advantage of the electric double layer capacitor. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and aims to provide a rechargeable electric drive tool and an electric drive tool device which are small and lightweight, can be rapidly charged, and can reduce operating costs. Another object of the present invention is to provide a charging type electric driving tool and an electric driving tool, which can correctly charge an electric double layer capacitor to a predetermined reference voltage, and prevent an excessive right φ 丨 4 & Causes the electric double-layer capacitor to be damaged or faulty, and the anti-speaking|staining * two; widening to prevent the excessively small charging voltage, causing insufficient or early drop of the screw locking ability. Another object of the present invention is to provide a 禋 禋 electric electric driving tool and an electric driving tool device, which can accurately control the motor rotation according to the output voltage of the electric double layer electric barn. The stability of the surface lock screw lock. Another object of the present invention is to provide a rechargeable electric drive and an electric drive tool device, which can improve the ease of use of the charging operation, and reduce the cumbersomeness of the user with a short-term charge and discharge cycle. In addition, the workability of the original screw shackle action is provided. ^ [Means for Solving the Problem] 2269-9098-PF; Ahddub 6 200821099 To achieve the above object, the electric drive tool of the present invention has a drill holder for detachably supporting a drive tool bit, and rotationally drives the drill bit A motor of the holder, an electric double layer capacitor for the motor supply circuit, and a drive tool connection for electrically connecting the electric double layer capacitor and an external DC power supply? a control unit that controls an electric voltage of the electric double-layer t-tank and controls a rotation operation of the motor, and houses or supports the drill holding jig, the motor, the electric double-layer capacitor, the driving tool connection terminal, and the control unit. The control unit includes a first switching circuit that is connected in series to the DC power supply and the electric double layer capacitor, and a voltage keying circuit and a charging control circuit that are connected in parallel to the DC power supply and the electric double layer capacitor. In order to supply the charging current to the electric double layer capacitor by the DC power source, the first switching circuit is turned on, and the first switching circuit is turned off when the voltage monitoring circuit monitors the charging voltage of the electric double layer capacitor. When the state in which the charging voltage of the double layer capacitor reaches the first reference voltage is detected by the voltage monitoring circuit, the charging of the electric double layer capacitor is stopped. In the electric drive tool of the present invention, a control unit for collectively controlling the charging voltage of the electric double layer capacitor and the rotation operation of the motor is built in, and only the electric double layer capacitor constitutes the motor driving power source, so that # becomes small and lightweight It can be charged quickly and can reduce operating costs. According to one of the preferred configurations of the present invention, the first switching circuit is repeatedly turned on and off in a certain cycle. As a further preferred type of sorrow, the voltage monitoring circuit passes a predetermined delay time after the first switching circuit is switched from the on state to the off state (preferably, the closing period is about to end 2269-9098-PF; Ahddub 7 200821099 bundle) ), monitor the charging voltage of the electric double layer capacitor. In this way, after the first switching circuit is turned off, the voltage between the turns of the electric double layer capacitor is stabilized after a predetermined delay time, and then the voltage monitoring circuit is monitored, so that the tenth point at which the charging reaches saturation is completed. Charging, the charging voltage of the electric double layer capacitor after charging is not excessive and insufficient, and can be consistent with the first reference voltage (for example, the maximum rated voltage). Further, it is preferable to increase the ratio of the off period or shorten the cycle of the cycle as the number of times of the turn-on and turn-off cycles increases. As one of the best modes of the present invention, the voltage monitoring circuit has a signal for outputting a first logic value when the applied voltage is lower than the first reference voltage, and outputs a second logic when the applied voltage is above the first reference voltage. a reference voltage detecting circuit of the value signal and a second switching circuit connected in parallel with the reference voltage detecting circuit, in order to electronically block the reference voltage detecting circuit from the electric double layer capacitor, the second switching circuit is turned off, in order to turn the electric double The charging voltage of the layer capacitor is applied to the reference voltage detecting circuit to turn on the second switching circuit. In this case, 'as one of the best modes, the reference voltage detecting circuit has a shunt regulator including a switching element and causing the switching element to take one of an on state or a non-conduction state according to a voltage level at which a voltage is applied, and a shunting regulator as a first light-emitting element connected in series, and a first light-emitting element together forming a first light-receiving element of the first optocoupler and a binary signal generating circuit connected to the first light-receiving element, and at the first When the light receiving element is in a non-conducting state, a signal of a first logic value is generated, and a signal of a second logic value is generated when the first light receiving element is in an on state; when the electric double layer capacitor is 2269-9098-PF; Ahddub 8 200821099 When the voltage is lower than the first reference voltage, the shunt regulator maintains the switching element in a non-conducting state 'by this' in the first optocoupler, the light-emitting element does not emit light', and the first light-receiving element remains in a non-conducting state, The value signal generating circuit generates a signal of the first logic value; when the voltage of the electric double layer capacitor reaches the reference voltage, the shunt regulator makes the switching element conductive Thereby, in the first optocoupler, the light emitting element emits light, the first light receiving element is in an on state, and the second signal generating circuit generates a second logic value signal; the second switching circuit has a series connection with the reference voltage detecting circuit. The second light-receiving element and the second light-receiving element together constitute a second light-emitting element of the second optocoupler; and selectively (4) the second light-emitting element is in a state of light-emitting state or non-light-emitting state, selectively The second light receiving element is switched to one of a conductive state or a non-conductive state. Further, according to a preferred embodiment of the present invention, the (four) portion has a switching element for connecting the electric double layer capacitor and the motor in series, and a motor detection output voltage and voltage detecting circuit and a motor control circuit for the electric double layer capacitor, In order to generate a rotational torque of the motor, when the output voltage of the electric double layer capacitor is higher than the second reference voltage, the no-load rotation speed of the motor maintains the first reference rotational speed, and the switching element is controlled by the pulse width control. Turning off (4), when the output of the electric double-layer capacitor is repeatedly low, the reference material is kept in the on state. In this configuration, p makes the range of the output voltage of the electric double layer capacitor large, and the motor

The variation of the rotation speed is wide, and the knowledge (equality or reproducibility) of the screw (4) ability can be improved. The first electric drive tool device of the present month has the electric drive tool of the present invention built in the manner of 2269-9098-PF; Ahddub 9 200821099 as described above and houses or supports a DC power supply. The loading and unloading means is engaged with the driving tool engaging portion of the electric driving tool, and the connecting end element of the unit connecting terminal which is electrically connected to the DC power source and can be physically and electronically connected with the driving tool connecting terminal of the electric driving tool, by the electric driving tool Engaged to the drive tool engagement portion, the drive tool connection terminal of the electric drive tool and the unit connection terminal of the charging unit are physically and electronically connected.

Further, the second electric drive tool device of the present invention has an electric drive tool having a bit holder that detachably supports the drive tool bit, a motor that rotationally drives the bit holder, and an electric double for the motor supply circuit a layer capacitor, a driving tool connection terminal for electrically connecting an electric double layer capacitor and an external DC power source, a first control unit for controlling a rotation operation of the motor, a storage or supporting bit holder, a motor, an electric double layer capacitor, and a driving tool a connection terminal and a housing of the first control unit; and a charging unit that accommodates or supports a DC power source, is detachably attached to a driving tool merging portion of the electric driving tool, and controls an electric double layer capacitor of the electric driving tool The second control unit of the charging voltage and the DC power supply and the second control unit are electrically connected: the (four)^ connection material of the movable driving fixture is physically combined, and the first control unit has a DC power supply for the DC power supply. The layer capacitor is used as the first circuit breaker circuit connected in series, and the parallel power supply and the electric double layer capacitor are connected in parallel for φ ^ reverse connection. Monitoring circuit and charging control:: In order to make the DC power supply to the electric double-layer capacitor to supply charging current, the =- switching circuit is turned on, in order to make the voltage monitoring circuit monitor the electric double-layer electric thief's charging and thundering / by the front The circuit is turned off, when the electric double layer capacitor 2269-9098-PF; Ahddub 1〇200821099 when the charging voltage reaches the first reference voltage is detected by the Thunderbolt voltage circuit, 'stop charging the electric double layer capacitor; The electric drive tool is coupled to the drive tool engagement portion, and the drive tool connection end of the electric drive tool and the unit connection terminal of the charging unit are physically and electronically connected. In the electric drive tool device of the present month, when the electric drive is engaged and engaged to the drive tool engagement portion of the charging unit, the drive tool connection terminal of the electric drive tool and the unit connection terminal of the charging unit are physically and electronically connected. The charging current is supplied to the electric double layer capacitor in the electric drive tool by the DC power source in the charging unit. In this case, on the first electric drive device, the control unit in the electric drive tool controls all charging operations of the electric double layer capacitor crying, and in the first electric drive tool device, the second control unit in the charging unit Control all charging actions of the electric double layer capacitor. According to one of the preferred configurations of the present invention, the driving tool connection terminal of the electric driving tool includes a driving tool connecting terminal of the positive electrode and a driving tool connecting terminal of the negative electrode. The unit connecting terminal of the charging unit includes the unit connecting terminal of the positive electrode and the negative electrode. The unit is connected to the terminal, so that when the electric drive is engaged to the charging unit, 'the unit connection terminal of the negative electrode is connected before the unit connection terminal of the positive electrode and the driving tool connection terminal of the positive electrode; and the driving tool connection terminal of the first negative electrode contacts. In this configuration, even if abnormal high voltage such as large wave = pressure enters the electric drive tool from the charging unit, it is surely jumped to the main power supply line to protect the circuit element 0 in the electric drive tool. According to the configuration of the best-mode, the micro-switch is arranged near the drive tool connection terminal or the unit connection terminal. The electric drive tool is correct 2269-9098-pF; Ahddub, 200821099 σ tooth is connected to the charging device. Drive tool engagement part 睥, i _ by the tool connection terminal, when the connection terminal or the drive ί k switch is opened and opened, the start of the lightning eclipse 1 is started, and the micro-switch is turned on. Charging action. According to its _ _ HL AL .  .  Better! State of the structure, in the electric Cong 7 Dingshi shell has and in the fl丨 male _s + & sway drive tool, the drill holder supports the driver and the direction of the drill bit A 妯 延伸 extends and is small (4) / ^, the hoe is the coaxial industry, the inner bit holder, the motor and the connecting terminal; the k-shaped 4 and the grip portion of the column portion from the bit holder; in the charging unit The middle is a right angle or an obtuse angle and is from the column = positive. The polarity of the tool connection terminal and the unit connection terminal is...the state or the tendency to receive the columnar shape of the outer casing from the side of the bit holder in the axial direction. A single-connection terminal is mounted inside the housing, and among the housing, the unit connection terminal is connected to a drive tool connection terminal of the electric drive tool. Further, according to one of the best-form configurations, in the electric drive tool, the double has a bulging portion which is bulged outward from the columnar portion in the radial direction and extends in the longitudinal direction of the columnar portion from the bit holder On the other hand, at least the front portion of the ridge portion is formed with a slit extending in the longitudinal direction of the columnar portion, and a driving tool connection terminal is disposed at a depth of the slit; on the other hand, in the charging unit, the driving tool is coupled The accommodating portion of the portion has a guiding groove for guiding the ridge portion of the outer casing of the electric driving tool, and the unit connecting terminal is disposed in the guiding groove. In addition, the ridge portion of the outer casing of the electric drive tool is guided by the guide groove of the drive tool engagement portion, and when the columnar portion of the outer casing of the electric drive tool is inserted into the accommodating portion of the drive tool engagement portion, the unit connection terminal relatively enters The slit of the ridge is connected to the drive tool connection terminal. Further, in the electric drive 2269~9〇98-PF; Ahddub 12 200821099 tool, the outer casing has first and second ridges at different positions on the outer circumference of the columnar portion, and the slit of the first ridge portion is disposed deep. There is a driving tool connection terminal of the positive electrode, and a driving process of the negative electrode and a connection * are arranged in the depth of the slit of the second raised portion. On the other hand, in the charging unit, the Guna 邛 of the driving tool engaging 邛 has first and second guiding grooves for guiding the first and first ridges, respectively, and is disposed in the first guiding groove The unit connection terminal of the positive electrode is provided with a cell connection terminal of a negative electrode among the other ones. In addition, the first and second raised portions of the electric driving tool are respectively guided by the first first and the leading grooves of the charging unit, and when the columnar portion of the outer casing of the electric driving tool is inserted into the receiving portion of the driving tool engaging portion, the charging unit The unit connection terminals of the positive electrode and the negative electrode are relatively inserted into the slits of the first and second raised portions, and the driving tool connection terminals of the electrode and the negative electrode are connected. Furthermore, in the electric drive tool, the first raised portion and the second raised portion have different widths in the outer direction of the cylindrical portion of the outer casing, and on the other hand, in the charging unit, the first 'ditch is in the valley The inner circumferential direction of the portion has a width corresponding to the first raised portion and the first guiding groove has a width corresponding to the second raised portion in the inner circumferential direction of the receiving portion. 2. According to one of the best-form configurations, in the charging unit, the P-Beitong drive tool mouth joint is driving the guard. The guide groove and the unit connection terminal are respectively disposed at predetermined positions in the vicinity of the first opening of the accommodating portion of the toothed portion, and the guide is also disposed at a predetermined position in the vicinity of the second opening on the opposite side of the first opening. Suppression - Bu 1 V 51 groove and early 兀 connection terminal. In addition, the columnar portion of the outer casing of the electric drive tool can be inserted into the column of the electric drive tool from the side of the first and the younger opening xlj, /, and the other one, and the inner cymbal, and at the same time, in the accommodating portion, Connect each 2269-9098-PF; Ahddub ^ 200821099 unit connection terminals to the drive tool connection terminals of their corresponding electric drive tools. Further, according to a configuration of one of the best modes, the charging unit can support the driving tool engaging portion in such a manner as to rotate about a fulcrum perpendicular to the central axis of the accommodating portion of the driving tool engaging portion, and has an angle at any angle Solid ~ support section. [Effect of the Invention] According to the structure of the electric drive tool and the electric drive tool device of the present invention, the structure and function as described above can be made compact and lightweight, can be charged at a high speed, and can be reduced in operation. cost. Furthermore, the electric double layer capacitor can be charged to a predetermined reference voltage without over or under: Therefore, the electric double layer capacitor can be destroyed, malfunctioned, etc., and the screw locking ability can be prevented from being insufficient or early. decline. Further, the motor rotation speed can be controlled to a predetermined characteristic according to the output voltage of the electric double layer capacitor, so that the stability of the screw inspection capability can be improved. Furthermore, ▼ improves the usability of the charging operation' to improve the workability of the screw shackle action. [Embodiment] The preferred embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a view showing the outer = configuration of an electric drive tool according to an embodiment of the present invention. This electric drive tool 1G can have a resinous casing 12 which can house or mount (support) functions of all electric drive tools other than the charger described later. The outer casing 12 has a cylindrical portion that supports the bit holder 14 in a rotatable manner at the front opening portion. 16 and gripping from the drill bit 2269-9098-PF; Ahddub 14 200821099 The side of the device 14 is approximately at right angles or obtuse angles and branches from the columnar portion 16 to the lower grip portion 18 of the lower portion. The rear end of the columnar portion 16 and the lower end of the grip portion 18 are blocked. Further, in this embodiment, the side of the drill holder 14 is used as the front portion of the outer casing 12 and the side of the lost portion 18 is the lower portion of the outer casing 12 with reference to the columnar portion 16. The bit holder 14 is detachably inserted into the driving tool bit 2 which will be a screw or a screw as a shackle object and is fixedly supported. In the center portion in the longitudinal direction of the outer columnar portion 16 is formed an upper raised portion 22 which is raised from the columnar portion 16 upward and has a substantially fixed height and width and which extends straight in the longitudinal direction of the columnar portion 16. In the upper raised portion 22, an upper slit 24 extending straight in the longitudinal direction of the columnar portion 16 is formed from the front portion through the intermediate portion and along the center line in the width direction of the upper raised portion 22. At the depth of the upper slit 24, an upper portion of the positive electrode 11 to be described later is connected to the terminal 56 (Fig. 2). A positive sign 26 is attached to the side surface of the front portion of the upper raised portion 22, which indicates that the upper connector terminal 56 provided on the inner side of the upper raised portion 22 is a positive electrode. Immediately behind the positive sign 26, the side surface of the outer casing column portion 16 is formed rearward, and a step portion 具有 having a larger diameter and having a substantially semicircular or circular arc shape is formed. As will be described later, the step portion 28 functions as a stopper that defines the insertion depth position when the electric driving tool 1 is inserted into the column hole of the driving tool holding portion of the charging unit m (Figs. 3 to 4). Further, the state display lamp 3A (the light-emitting diodes 196, 1 98 of the 14th drawing to be described later) which is formed of the light-emitting diodes directly behind the upper raised portion μ can expose the light-emitting surface and be attached to the columnar portion. The top of 1 6 . As will be described later, the state in the electric engraving electric drive tool 10, in particular, 2269-9098-PF/Ahddub 15 200821099 各个 various states during charging operation (charging, charging completion, charging abnormality, etc.) transmission status indicator lamp 3 The illuminating pattern of 0 is used to notify the user. On the opposite side of the upper raised portion 22, that is, the lower surface of the columnar portion 6, a lower raised portion 32 which is swelled at a substantially fixed height and width and which extends straight in the longitudinal direction of the columnar portion 16 is formed. On the lower raised portion 32, a lower slit 34 is formed which extends straight from the front portion through the intermediate portion and along the center line in the width direction of the lower raised portion 32 in the longitudinal direction of the columnar portion 16. In the depth of the lower slit 34, a lower connector terminal 60 (second drawing) of a negative electrode to be described later is disposed. On the side of the front portion of the lower raised portion 32, a minus sign 36 is attached, which indicates that the lower connector terminal (10) provided on the inner side thereof is a negative electrode. The lower ridge portion 32 has a smaller width than the upper ridge portion 22 and a smaller length, and the trailing end is in front of the grip portion 18. A trigger 38 is attached to the root of the front portion of the grip portion 18 near the tail end of the lower bulge portion. When the grip portion 18 is gripped and the trigger 38 is buckled with the index finger of the person, the motor 46 (Fig. 2) built in the outer & 12 starts to actuate 'to drive the driver bit 2 () and the bit holder 14 As one, and rotate it. Fig. 2 shows an arrangement structure of main components or machines housed in the electric drive tool 1A. Among the columnar bodies 16 of the outer casing 12, the brake switch 4, the clutch cry 42, the gear 44, the motor 46, the printed wiring board 48, and the first electric double layer are sequentially disposed from the bit holder 14 to the depth or the rear. Capacitor (Electric Double Layer Capacitor, hereinafter referred to as "edlc"). On the printed wiring board 48, an electronic component constituting a control unit ιι (described in Fig. 4) to be described later is packaged. 2269-9098-PF; Ahddub 16 200821099 The grip portion 18 is hollow, in which a double layer capacitor 5 〇 β is housed. Thus, the first and second electric double layer capacitors 50A, 50B are housed in the outer casing 12 at separate positions, but in terms of electrical circuits, they are connected in series via an electronic circuit (not shown). Inside the trigger 38, a microswitch 52 for starting the shackle screw that is engaged with the triggering of the trigger is disposed. At the root of the upper end of the rear portion of the nip portion 18, a slide switch 54 for switching the direction of rotation (forward/reverse rotation) of the drive tool bit is mounted. An upper connector terminal 56 is disposed at a position directly below the upper slit 24 (first drawing) on the inner side of the upper raised portion 22 of the outer casing column body 16, and directly behind the upper connector terminal 56, A microswitch 58 is provided for initiating a charging action. On the other hand, the lower connector terminal 60 is disposed at a position directly above the lower slit (Fig. 1) inside the lower raised portion 32. As will be described later, when the electric driving tool 1 is correctly mounted on the charging unit 70 (Fig. 3 to Fig. 1), the positive contact soldering upper connector terminal 56 of the charging unit 7 is physically and electronically connected. And, the micro switch 58 is switched from the open position to the closed position, and the negative contact of the charging unit 7 is also physically and electronically connected to the lower connector terminal 6. Fig. 3 through Fig. 8 show the construction of the charging unit 7A of this embodiment. The charging unit 70 and the above-described electric driving tool 1〇 form a combination of the electric drive forming devices. The charging unit 70 has a frame 72 having a rectangular parallelepiped shape, and is formed at a certain interval between the frame 72 and vertically and parallel to each other. The pair of support plates 74 are disposed to span the level between the pair of support plates 74. A drive (not shown) centered and supported by a rotatable displacement 2 2269-9098-PF; Ahddub 17 200821099 tool holding portion 76. In the casing 72, a charge 78 which may be composed of a switching power supply is housed. The charger 78 is connected to a commercial AC voltage such as 100V or 200V through a power line 8〇, and outputs 6.  Fixed DC voltage such as 5V. Further, the maximum rated voltage of the EDLC 50 (50A, 50B), that is, the 'charge reference voltage Vs is lower than the output voltage of the charger 78, for example, 5.4 volts. The output terminal of the charger 78 is electrically connected to the later-described contacts (98R, l〇〇R) and (98L, 100L) in the drive tool holding portion 76 through the cable line 82 in the transmission unit. A mounting plate is fixed to the bottom surface of the frame 72. The driving tool holding portion 76 has a pair of (left and right) end faces which are opposed to each other and a column hole 86 which is open in the middle. The column hole 86 can be inserted into the electric driving tool 1 in a state or a tendency as shown in the g-figure or the first drawing. . Here, FIG. 9 shows a fixed type of use case in which the charging unit 7 is disposed on the table 88 in an approximately horizontal manner, and FIG. 10 shows a wall-mounted type in which the charging unit 70 is suspended on the wall 9A in an approximately vertical manner. Use case. Figs. 3 to 5 show the state of the charging unit 70 (especially, the driving guard holding portion 76) of the stationary type (Fig. 9). In this case, as shown in Fig. 3, in the driving tool holding portion, the end surface 76R in which the side (right side) is directed obliquely upward and the end surface of the other side (left side) is inclined obliquely downward. In order to perform such posture change or adjustment, the screw 92 attached to the upper end portion of the support plate 74 is loosened, and the drive tool holding plate 76 is rotated and displaced to extract the angle of the clamper 92. To fix it. Thus, from the side facing the obliquely upward side toward the right end face 76R of the door tens of thousands, as indicated by the arrow A, the electric driving tool 1〇 (not shown in Figs. 3 to 5 is 2269-9098-PF; Ahddub 200821099 comes out) inserted into the post hole 86 of the drive tool holding portion 76. As shown in Figs. 4 and 5, the up-and-down groove 94r is formed from the right side m of the boring drive tool holding portion 76 toward the depth of the column hole 86, and (4). The k pairs of grooves 94R, 96R are the upper right guiding groove and the lower right guiding groove. In the fixed type of use, they respectively accommodate and guide the upper ridge of the outer cylindrical portion 16 of the electric (four) moving tool 1〇. The portion 22 and the lower raised portion 32. As described above, in the electric driving tool 1A, the upper ridge portion Μ has a larger width than the lower ridge portion 32, and correspondingly, in the charging unit 70, the upper right guide groove 94R is formed to be smaller than the lower right guide groove. _ still generous. The upper right side guide groove 94R and the bottom portion in the width direction of the bottom portion of the lower right guide groove _ are respectively attached to the upper right side of the positive electrode composed of a plate-shaped conductor extending parallel to the central axis of the column hole 86 and extending L Point (10) and the lower right contact surface of the negative electrode. The upper right side contact 98r and the lower right side contact point through the electric winding 82' are electrically connected to the positive electrode output terminal and the negative electrode output terminal of the charger 框 of the housing 72, respectively. As shown in Fig. 3, the upper right side corner portion of the side surface of the driving tool holding portion is attached with a positive sign 1R2R indicating that the upper right side contact 98R provided on the inner side upper right side guiding groove_ is positive. . On the other hand, at the lower right corner portion of the side surface of the driving tool holding portion 76, a negative sign 104R indicating that the lower right side contact i provided on the inner right lower side guiding groove 96R is hidden as a negative electrode is added. Fig. 6 through Fig. 8 show the state in which the charging type 70 (especially the driving tool holding portion 76) of the use type of the wall type (Fig. 1) is used. In the case of 2269-9098-PF; Ahddub 19 200821099, as shown in Fig. 6, on the driving tool holding portion 76, the left end surface 76L is obliquely upward and the right end surface 76R is obliquely downward. attitude. The screw 92 can also be operated in the same manner as described above by this posture change or adjustment. Thus, from the side of the left end surface 76L facing obliquely upward, as indicated by an arrow B, the electric driving tool 10 (not shown in Figs. 6 to 8) is inserted into the column hole 86 of the driving tool holding portion 76. As shown in Fig. 7 and Fig. 8, a pair of upper and lower grooves ml are formed from the left end surface 76L of the driving tool holding portion 76 toward the depth of the column hole 86. The pair of grooves 94L, 96L are an upper left guiding groove and a lower left guiding groove. In the wall-mounted type, they respectively receive and guide the lower ridge of the outer column portion 16 of the electric driving tool 10. 32 and upper raised portion 22. As described above, in the electric drive tool 10, the upper ridge portion 22 has a lower portion. The ridge portion 3 2 has a large width. Corresponding to this, on the left side of the driving tool holding portion 76, the lower left guiding groove 96L is formed to have a larger width than the upper left guiding groove 94B. The upper left side contact 98L of the negative electrode composed of a plate-shaped conductor extending parallel to the central axis of the post hole 86 is attached to the central portion in the width direction of the bottom portion of the upper left side guide groove 94L and the lower left side guide groove 96L. And the lower left contact of the positive pole is 1 00L. The upper left contact 98L and the lower left contact 100L are transmitted through the cable 82, and are electrically connected to the negative output terminal and the positive output terminal of the charger 78 of the housing 72, respectively. As shown in Fig. 6, the upper left side corner portion of the side surface of the driving main holder holding portion 76 is attached with a negative number i indicating that the upper left side contact 98L provided on the inner side upper left guiding groove 9 is the negative electrode. 〇 2L. On the other hand, in the lower left side corner portion of the side surface of the moving tool holding portion 76 of the drive 2269-9098-PF; Ahddub 20 200821099, the lower left side contact 丨00L indicating the left side guide groove 96L provided at the inner lower portion thereof is additionally Positive sign 104L of the positive electrode. Further, the structure may be such that the upper left side contact 98L of the upper left guiding groove 94]L is set to the positive pole, the lower left guiding groove 胤 is set to the negative pole, and the left side guiding groove 94L accommodates the electric driving tool. The outer casing column portion 16 (f) and the lower left guiding groove 96 accommodate the lower ridge portion 32. Here, a configuration (action) in which the electric drive tool 10 is electrically connected to the drive tool holding portion 76 of the charging unit 70 when the electric drive tool 10 is attached will be described in detail with reference to Figs. 11, 12, and 13. The illustrated example is a case where the fixed type (Fig. 9) is used, that is, the electric drive tool 10 is inserted into the driving tool holding portion 76 of the charging unit 7 from the side of the right end surface 76R. The 96R is guided while entering the depth of the column hole μ. Then, the upper right side contact 98R provided to the upper right side guide groove 94R enters the electric driving tool 1 在. In this case, as described above, the upper ridge portion 22 and the lower bulge of the outer casing column portion 16 of the electric drive tool 10 are as described above. The portion 32 is received by the upper right guiding groove 94R and the lower right guiding groove upper slit 24 of the driving tool holding portion 76, respectively. On the other hand, the lower right side contact lR of the lower right guide groove 96r is relatively inserted into the lower slit 32 of the electric drive tool 1''. As described above, in the electric drive tool 1A, the lower connector terminal 60 is disposed in front of the upper connector terminal 56 at a point (e.g., several millimeters). By this, as shown in Fig. U, before the upper connector terminal % 2269-9098-PF; Ahddub 21 200821099 is connected to the upper right side contact 98R (front-engagement), the lower connector terminal is lower right side. Further, the upper connector terminal 56 and the lower connector terminal 6A can be formed by a double-contact cantilever beam contact as shown. Further, as shown in Fig. 12, when the leading end of the upper right side contact 98R reaches (contacts) the contact portion of the upper connector terminal 56, the lower connector terminal 60 is frictionally contacted with the lower right side of the lower right side contact The contact portion of the point advances. Then, the upper right side contact 98R also frictionally contacts the contact portion of the upper connector terminal 56, and proceeds forward. Finally, as shown in the figure, the tip end of the upper right side contact 98R passes through the operating lever of the micro switch 58. 58a Press button 58b. By pressing the button on the microswitch 58, the contact position is switched from the previous open position to the closed position. At this stage, it is formed in the electric drive tool i. The slit on the side surface of the outer casing column portion 16 is engaged with the right end surface of the driving tool holding portion 76, that is, the edge portion of the column hole 86, by the protruding step portion 28. Thus, the mounting of the electric drive tool 1〇 on the charging unit 结束 ends. Further, in this embodiment, as described above, the position of the drive tool connecting terminal on the side of the electric drive unit, that is, the position of the connector terminal 56 of the positive electrode and the connector terminal 60 of the negative electrode are respectively indicated. The positive sign 26 and the minus 36 are attached to the outer casing column portion 6, and the unit connection terminals on the side of the charging unit, that is, the positions of the positive electrode contacts 98R (mL) 56 and the negative electrode contacts 100R (98L) are disposed. The positive sign 1_test) and the beneficiary (10) L), which are respectively shown, are attached to the single-handed portion 76 _ face. These polarities are indicated as symbols, and the user can move the outer 2269-9098-PF of the sitter; Ahddub 200821099 or the drive housing column 16 of the charging unit 7 方向 in the correct position with the holding portion 76. However, the user sometimes accidentally inserts the outer casing column portion 16 of the electric drive tool 1 in the opposite direction into the driver of the charging element 70 in the opposite direction, and keeps the surname 邛76. However, in this case, the electric drive tool 1 〇 轫 办 办 , 孕 孕 孕 孕 孕 孕 孕 孕 孕 孕 孕 孕 孕 孕 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部 上部The entrance of the 96R (94L) can't enter the deep, so it prevents the phase and the secret - the women's clothing that is not anti-polar, and the user can directly find their own mistakes. Next, the configuration and operation of the control unit in the electric drive tool 10 of this embodiment will be described with reference to Figs. 14 to 18. Fig. 14 shows the circuit configuration of the control unit 110 of the electric driving tool 1A. As described above, the control 11G is composed of a plurality of electronic circuits and electronic components mounted on the printed wiring board 48 (Fig. 2). In particular, the microcomputer 112 is in charge of all of the main control functions of the control unit 11〇. The upper clamp connector terminal 56 of the positive pole is connected to the positive power supply line 114, and the lower connector terminal 60 of the negative pole is connected to the negative power supply line 116 of the total potential. As described above, in a state where the electric driving tool 10 is correctly mounted to the charging unit, the positive electrode connector terminal 56 of the electric driving tool 10 is connected to the positive electrode contact 98R (or 1〇〇L) of the charging unit 70, and the charging unit 7 is connected. A negative electrode connector terminal 60 of the electric drive tool 1A is connected to the negative electrode contact 100R (or 98L) of the crucible. EDLC50 (50A, 50B) can be connected in series with the switching circuit composed of field effect transistor (FET) 118 between the positive power supply line 114 and the negative power supply line ι 6 6269-9098-PF; Ahddub 23 200821099 is connected in addition, EDLC50 and The voltage monitoring circuit 12 is connected in parallel. The gate terminal of the FET 118 is connected to the signal output terminal RB of the microcomputer ι2 through the resistor 119. When the microcomputer! ! 2 by the signal output terminal RB. When the low level signal is output, the FET 118 is turned off, and the EDLC 5 is electronically blocked from the charger 78. When the microcomputer 丨丨 2 is outputted by the signal terminal rb. When the signal of the south level is output, the FET 118 is turned on, and the charging current is supplied from the charger 78 to the EDLC 5 。. The voltage monitoring circuit 1 2 and the rated voltage detecting circuit 22 and the output end of the optical coupler 124 are connected in series by a light-receiving element (photoelectric crystal). The rated voltage detecting circuit 122 and the resistor 126, the input end of the optocoupler 128 emit 70 pieces (photodiode) and the shunt regulator 130 are connected in series. The shunt regulator 1 30 can be built in a switching element composed of a transistor, a voltage comparator, and a reference voltage generating circuit. In more detail, the switching element is connected to the photodiode of the photocoupler 128. An output terminal of the reference voltage generating circuit is connected to one of the input terminals of the voltage comparator, and a node of the voltage dividing point of the resistor dividing circuit composed of the two resistors 132, 134 is connected to the other input terminal. The output terminal is connected to the control terminal of the switching element. Here, the reference voltage generating circuit generates a maximum rated voltage V with respect to the EDLC 50. Corresponding set reference voltage. Further, at the node Na of the resistor divider circuit (132, ι 34), a divided voltage proportional to the charging voltage Ved of the EDLC 50 can be obtained. During this period when the divided voltage is lower than the above reference voltage, the voltage comparator can generate a low level output signal, and the switching element remains in a non-conducting state. In addition, when the charging voltage Ved of the EDLC 50 reaches the maximum rated voltage V s ( 5 · 4 volts), the divided voltage of the node na is equal to the above reference voltage, 2269-9098-PF; Ahddub 24 200821099 The voltage comparator generates a high level The output signal, the switching element is turned on. The output end of the optical unit 128 is an npn transistor. The connector terminal is connected to the output terminal of the voltage regulator 138 through the resistor 136, and is transmitted through The resistor 14 is connected to the signal input terminal RA" of the microcomputer 112 in the non-conducting state of the switching element of the shunt regulator 130. In the optical device 128, the photodiode does not emit light, and the photo transistor is turned off. A high-level signal is obtained at the node Nb between the resistors 136, 140. The high-level signal is input to the signal input terminal RA3 of the microcomputer i丨2. When the switching element of the shunt regulator 130 becomes conductive. When a current flows, in the optocoupler 128, the photodiode emits light, the phototransistor turns on (becomes turned on), and the signal from the low level is input from the node core to the microcomputer 112. Signal input terminal ra3. The insertion of the resistor 126 provided in the voltage monitoring circuit 12A is for limiting the current when the switching element of the shunt regulator 130 is turned on. Further, the output terminal and the node Na connected to the regulator 138 to be described later are connected. The resistor 136 forms a binary signal generating circuit for obtaining a value (H/L) signal at the output terminal of the optoelectronic transistor of the optocoupler 128, that is, the node. In the optocoupler 124, the input terminal The positive terminal of the light-emitting element (photodiode) is connected to the output terminal of the voltage regulator 138 through the resistor 142, and the negative terminal is connected to the signal output terminal RB4 of the micro-point brain 112. When the microcomputer 2 outputs the output terminal RB4 In the high-level signal, in the optocoupler i 24, the photodiode does not emit light, and the photo-electric crystal is turned off, whereby the front-end voltage detecting circuit 122 is electrically separated from the EDLC 50. When the microcomputer 2269-9098- PF;Ahddub 25 200821099 112 When the signal output terminal RB4 outputs a low level signal, in the light logger 124, the photodiode emits light, and the photoelectric transistor turns on (turns on the conductive state), thereby, the rated voltage is detected. The circuit 122 and the EDLC 5 are electrically connected. The smoothing devices 124, 128 are electrically insulated from the EDLC 5 () and the microcomputer 112, so that the microcomputer 112 is not affected. The output terminal of the regulator 138 is also connected to the power supply voltage of the microcomputer 112. The terminal VCC is input to the input terminal of the voltage regulator 138, and the output voltage of the step-up DC/DC converter 144 is input. The DC/DC converter 144 can be composed of a switching power supply of the interrupting mode. 8~9. The DC voltage on the positive power supply line 114 is input in the range of 5 volts, and then a DC voltage of 95 volts is rotated. The voltage regulator 138 can be composed of a voltage regulator or a series of voltage regulators, which removes the variation of the output voltage of the DC/DC converter 144 and outputs an internal voltage of 5 volts with a stable voltage level. The output terminal of the voltage regulator 138 is also connected to the i-node through the resistors 146, 148, 150. These nodes Ne, Nd, Ne are connected to the signal input terminal 仏, RAe of the slave computer 112 through the resistors 152, 154, 156, and through the switch 58' 52, 40 is connected to the total potential. Further, the resistors 14A, 152' 154' 156 are connected to the total potential by the terminals on the side of the computer 112 to reduce the noise (4) low-level wave device. The first off 58 is as described above, and is a switch that is provided behind the upper connector terminal μ to start charging. When the switch Μ is turned on, the high-level signal is occupied by the node f, and Ρ", έ Nc is input to the signal input terminal RA4 of the microcomputer 112. Field: Motion: The movable tool 1 is mounted on the charging unit 7 The f bit that causes the switch Μ to turn off becomes a low level, the low level signal is input to the micro 2269-9098-Pp; Ahddub ώ Ο 200821099 • the signal input terminal RA4 of the computer 112. The microcomputer 112 is input at a low level signal. In response to the signal input terminal RA4, control of the charging operation of the EJ) LC5〇 is started. As described above, the switch 52 is a microswitch 52 for starting the slamming switch in conjunction with the trigger 38 (Fig. 2) When the switch 52 is turned on, the high level signal is input from the node Nd to the signal input terminal RA6 of the microcomputer 112. When the trigger 38 is buckled and the switch 52 is turned off, the power of the node Nd becomes low level. The bit and low level signals are input to the signal input terminal RA6 of the microcomputer 丨丨 2. When the low level signal is input to the signal input terminal RA6, the microcomputer 112 starts to drive control of the motor 46. Set on the bit holder 14 and the brake switch between the clutch 44 (Fig. 2). Normally, the switch 40 is turned on, and the high level signal is input from the node Ne to the signal input terminal RA of the microcomputer 112. In the screw lock action, when the screw When the positioning torque causes the load torque to reach a predetermined value, the switch 40 is turned off, the potential of the node Ne becomes a low level, and the low-level signal v number is turned into the signal input terminal RA of the microcomputer 112. The microcomputer 112 is at a low level. When the signal is input to the signal input terminal RA?, in response to this, the rotational driving of the motor 46 is stopped. Motor 46 is a DC motor with a brush attached. In the control unit 110, in order to control the rotation operation of the motor 46, between the positive power source line 114 and the negative power source line 116, the motor 46 and the forward/reverse switching switch 160 and the switching element such as the FET 162 are connected in series. In the forward/reverse switching switch 160, the first and second positive fixed contacts &, Sf and the positive power supply line 114 are connected in common, and the first and second negative fixed contact Se and the positive terminal of the FET 162 are common. Connection, first and second movable 2269~9098-PF; Ahddub 27 200821099 Electric shock sa: respectively connected to the two terminals of the motor 46. The two movable contacts Sa, Sb are selectively switched to a position (such as a forward rotation position) or a second connection with the first fixed contact (Sc, Se) in accordance with the operation of the slide switch 54 (Fig. 2) One of the positions (reverse positions) where the fixed contacts (Sd, Sf) are connected. The negative terminal of FET1 62 is connected to the negative supply line (ie, the total potential). The gate terminal of the FET 162 is connected to the signal output terminal RB3 of the microcomputer ία through the resistor 164, and is connected to the total potential through the resistor 166. By the signal output terminal of the microcomputer 112, when the high level signal is output, the FET 162 is turned on, and by the signal output terminal RB3, when the low level signal is output, the FET 162 is turned off. As will be described later, the microcomputer 112 performs switching control in a pulse width control (PWM) manner in accordance with the voltage level of the motor driving voltage from the EDLC 50, or maintains a continuous ON state. A switching element such as FET 168 for controlling the power generation of the motor 46 is connected between the positive fixed contact of the forward/reverse switching switch 16A and the & and the negative fixed contact Sd'S. When the motor drive unit 62 is energized to the off state, a closed circuit is formed between the motor 46 and mi68 through the forward/reverse switch 160. The microcomputer U2 performs switching control of the mi68 through a signal that is output from the signal output terminal through a driving circuit composed of a battery 172 and a core body. The control unit 110 is provided with a power supply voltage detecting circuit 176 for detecting the potential or power on the positive power source line 114 at any time. The power supply detecting circuit 176 sequentially inputs a resistor divider circuit composed of a type transistor m and resistors 180, 182 between the positive power source line 114 and the total potential, at a voltage dividing resistor 180, 182 ρ θ λ α μ The partial pressure obtained by the diner between Z is 2269-9098-PF; Ahddub 28 200821099 (detection voltage) is converted into a digital signal by A/D Han change μ μ 8 π conversion state 184, input to the microcomputer 112 of the age of dreams ☆ mountain 2 η Α children enter the stand and the child to 〇. The resistors 186, 188 and the 电-type transistor 190 constitute a driving circuit that drives the ΡΝ-type transistor 178 by a signal output from the signal output terminal 微 by the microcomputer 112. Resistor 192 and capacitor ί94 form a low pass filter for reducing noise. The 电-type transistor 178 constitutes a switching circuit for electronically connecting or disconnecting between the positive power source line U4 and the power source voltage detecting circuit 76. During the closing of the switching circuit 178, no current flows through the resistor dividing circuit (180, 182), which saves power consumption. At the signal output terminal RBe of the microcomputer 112, two (two-color) light-emitting diodes (LEDs) 1 96, 1 98 constituting the state display lamp 30 (i) are connected. By the signal output terminal RBee, when the signal of the high level is output, the LED1 96 is energized through the resistor 2, and emits light such as green. The signal output terminal RB7 is wrong. When the high level signal is output, the LED 196 is energized through the resistor 198 to emit light such as red. Next, the main function of this control unit 11〇 will be described. First, the effect of charging the EDLC 50 will be explained. As described above, when the electric drive tool is applied to the charging unit 7 to cause the switch 58 to be turned off, the microcomputer 11 2 responds to this and starts the control of the charging operation. In this charging operation, the microcomputer i丨2 turns the FET 118 on or off in a certain cycle (for example, i seconds) and a certain load (for example, 90%). While the FET 118 is on, the charging current is supplied from the charger 78 to E:DLC50, and the charging voltage of the EDIX 50 rises directly. While the FET 118 is off, the charging current is not supplied from the charger 78 to the EDLC 50, and the charging voltage of the EDLC 50 does not rise. 2269-9098-PF; Ahddub 29 200821099 The microcomputer 112 monitors the signal to the optocoupler 124 through the signal output terminal RB4 while the FET 118 is off, so that the voltage monitoring circuit monitors the voltage ED between the EDLC terminals. In this case, as shown in Fig. 15, after the FET 118 is turned off, the optocoupler 124 is turned on not immediately but after a certain delay time ^, so that the voltage monitoring circuit 12 is connected to the two terminals 51a of the edlc5〇. , 51b. In general, EDLC is a method in which activated carbon particles containing an electrolyte are filled so as to overlap between electrodes, and all of the particles are not uniformly charged by the charging field to a certain extent, and discharge from the charged particles is generated. A charging reaction to particles that have not been fully charged (diffusion due to this diffusion phenomenon, if the charging is suddenly stopped before the charging is completed, as shown in the 15th schematic diagram, the voltage between the terminals of the EDLC5〇 cannot be maintained and begins to drop. (falling down.) Therefore, if the voltage monitoring circuit 120 is monitored immediately after the FETU8 is turned off, the monitoring result of the voltage between the EDLC terminals reaching the large rated voltage ^ (due to rush) may be generated, and the microcomputer 112 may When the monitoring operation is completed, the charging operation is terminated. Further, when the charging operation is ended, the ON/OFF cycle of the FEn 丨 8 is stopped, and the FET 118 is kept in the off state. In this case, after the FET 118 is turned off, the FET 118 is turned off. The time 'the voltage monitoring circuit 120 is monitored in a state where the voltage Ved between the EDLC terminals is stable', so It is true that the charging is completed when the charging is completed. The charging voltage of the EDLC 50 and the maximum rated voltage Vs are just after the end of the charging. The EDLC 50 can be charged rapidly, so it takes only 10 to 15 seconds to charge from the start of charging. 2269-9098-PF; Ahddub 30 200821099 In the voltage monitoring circuit 120, before the terminal voltage Ved of the EDLC 50 reaches the maximum rated voltage Vs, the switching element of the shunt regulator 1 30 of the rated voltage detecting circuit 丨22 is turned off. Therefore, the optocoupler j 28 is also turned off, and a high-level signal is obtained at the node of the output circuit (binary signal generating circuit). When the voltage Ved between the terminals of the EDLC 50 reaches the maximum rated voltage Vs, the shunt The switching element in the voltage regulator 13 is turned on (becomes conductive), whereby the optocoupler 128 is also turned on, and a low-level signal is obtained at the node Nb of the output circuit (binary signal generating circuit). In the period in which the monitoring is stopped, that is, during the period in which the smoothing device 124 is turned off, no current flows through the resistance dividing circuit (13 2 134), so that power consumption is small. FIG 17 represents a modification of this embodiment of the voltage-controlled charge patterns method. FIG. 16 is a technology, as FETU8 opening / closing cycle counter increases the number of coating gradually increases during T (Ti, Ti + i ,. . )The ratio. That is, during charging, the ratio (load) during the turn-on period is made larger, and the efficiency of Edc charging is prioritized. The ratio of the off period is increased at the stage of approaching the end of charging (thus the delay time to is also increased) The accuracy or reliability of the EDLC voltage monitoring can be ensured first. The technique of Fig. 17 is to gradually shorten the cycle period c (Ci, c..., as the number of repetitions of the ON/OFF cycle of the FET 118 increases. . ). Also in this case, the timing of shortening the EDLC voltage monitoring (four) 'by this' can improve the accuracy of the end of charge detection at the stage of approaching the end of charging. · In addition, the cycle c of the cycle can be gradually shortened as the number of repetitions of the on/off cycle of the FET 118 increases (c and gradually increases during the period 2269-9098-PF; Ahddub 31 200821099 T (T i, T i +1, In addition, the microcomputer 112 monitors the power supply voltage and the voltage on the line 114 through the power supply detection circuit 176 immediately after the charging operation of the EDLC 5G is started. In other words, during the charging, the power supply voltage detecting circuit KG is permeable. The power supply voltage line m detects the output of the charging circuit 78. Even if the electric driving tool ίο is correctly mounted on the charging unit 7〇, in the case where the charging circuit 78 fails or the power supply line 8〇@ plug is not inserted into the socket of the commercial alternating current power supply' The power is not supplied from the charging unit 7 (M. At this time, the voltage of the power supply voltage line 114 becomes an abnormally low value. Therefore, the micro-power ΐ2 detects the abnormal state through the power supply voltage detecting circuit 176, and makes an alarm. The red light-emitting diode 198 emits light. When there is no such abnormal state, the voltage on the power voltage line 114 exceeds a certain value, so the microcomputer ιΐ2 regards it as EDLC charging. In the middle of the process, the green light-emitting diode 196 is caused to emit light. In this case, the green light-emitting diode 196 can be flashed during charging, and becomes continuous after the charging is completed. Next, the description is made after the EDLC is charged. The role of the control unit 11 。. As described above, when the EDLC charging of the electric drive tool 10 is completed, the status display lamp 30 (the light-emitting diode 196) changes from green flashing to continuous lighting, so any time after that The electric drive tool can be removed from the charging unit 7 to be used for the screw lock operation. When the electric drive tool 1 is pulled out from the drive tool holding portion 76 of the charging unit 70, the electric drive tool 10 is used. The reverse operation is performed between the charging unit 70 and the charging unit 70. That is, the operation when rewinding between the respective parts according to the original sequence is performed. In this case, the positive connector 2269-9098-pF of the electric driving tool 10 ; Ahddub 32 200821099 After the terminal 56 is separated from the positive contact 98R (or 1〇〇L) of the charging unit 70, later, the negative connector terminal 6 of the electric drive tool 100 is removed from the negative contact 100R of the charging unit 70 ( Or 98L) separation, whereby even if an abnormal high voltage such as a surge voltage enters the control unit 11〇, it can be surely jumped to the total power supply line, so that the circuit elements in the control unit 1 1 can be safely protected. When the electric drive tool is applied to the charging unit, the positive connector terminal 56 of the electric drive tool 1 is connected to the positive contact 98R (or 100L) sheath of the charging unit 7A, and the negative connector terminal 6 is connected. Since the negative contact 100R (or 98L) of the charging unit 70 is provided, the circuit elements in the control unit can be safely protected against abnormal high voltage such as surge voltage. When the electric drive tool 10 is used, the user depresses the trigger 38, the switch 52 is closed, and the microcomputer 112 responds to cause the FET 162 to open, so that the drive current flows through the motor 46 and rotates the drive motor 46. In this embodiment, as shown in Fig. 18, an appropriate reference voltage Vf is set in the operating range of the output voltage ED of the EDLC 5A of the motor 46 (in the illustrated example, 3.) 5 volts) 'When the EDLC50's turn-on voltage Ved is higher than the intermediate reference voltage V4, the no-load rotational speed becomes a certain rotational speed (in the illustrated example, 48 〇rpn〇' microcomputer 112 is controlled by the pwM method. Changing the load ratio) to perform switching control of the FET 162. In other words, in a voltage range higher than the intermediate reference voltage VF, the load ratio of the pwM control is increased by decreasing the output voltage of the muscle (10) from the maximum rated voltage Vs. The unloaded revolving speed is maintained at the reference speed. The microcomputer 112 can measure the output of the EDLC 50 through the power supply voltage detecting circuit Π6 (4), and determine the load ratio of the ρΜ control from the voltage load ratio characteristic preset by the tool such as the comparison table 2269-9098 - PF; Ahddub 33 200821099 or pulse width. In addition, after the output voltage Ved of the EDLC 50 is divided into the intermediate reference voltage, the FET 162 is kept in the on state, and the eDLC wheel voltage Ved is supplied from the original direct current (100% duty ratio). To the motor 46. Further, the drive current supplied from the EDLC 50 to the motor 46 flows through the bypass diode 115 connected in parallel with the FET Li8. Configuration, as described above, when the electric driving tool 10 is inserted into the driving tool holding portion 76 of the charging unit 70, the EDLC 50 in the electric driving machine /, 10 is correctly fully charged to the maximum rated voltage vs. thereby, without causing In the case of damage or failure of the EDLC 50, it is determined that the EDLC voltage is used for the motor drive voltage from the maximum rated voltage after charging. However, if the above PWM control is not performed, that is, if the load is not often 1% The EDLC output voltage Ved is supplied to the motor 46. In the one-time use cycle of the electric drive tool 10 (for example, a screw lock operation in which dozens of screws are installed), the fluctuation range of the screw yoke rotation speed (together with the torque) changes. Large, for the user, there is no use in use. In this embodiment, the EDLC voltage adopts a range higher than the intermediate reference voltage ^, and is uniformly controlled by the PWM control method described above. The flat-fixed driving tool rotates at a speed, so that the 疋 lockability (equality, reproducibility) can be improved. In addition, the microcomputer 丨丨 2 can transmit power. The voltage detecting circuit 176 monitors the output voltage of the EDLC5〇, and determines whether the EDLC voltage VED is higher or lower than the intermediate reference voltage V during normal or at any time. Further, when the EDLC voltage VED is at a lower limit voltage (for example, 25 volts) that can be used. When the temperature is lowered, the situation can also be detected, and the user is notified through the status indicator lamp 3 (for example, the status indicator lamp 30 is turned red). 2269-9〇98-PF; Ahddub 34 200821099 In the person's screw pickup operation In the middle, when the screw is positioned and the brake switch 40 is turned off, the microcomputer is smashed! 2 The Fm 62 for driving the motor is turned off, and instead, the FET m for power generation braking is turned on. In this embodiment t, the pulse width control side (four) mi68it line switch control is used to moderately control the degree of power generation braking or regenerative braking of the horse 46. In addition, FET 118 turns on while fet168 is off. Thus, a parasitic diode passing through 62 causes a current to flow, and energy is returned from the motor 46 to the EDLC 5 〇. As described above, the electric drive tool 1 in this embodiment only has the built-in EDLC as the power source for the motor drive, and does not have the battery at the same time, so that it can be compact, lightweight, and can be quickly charged and has a long life (not required). The advantages of EDLC, such as replacing the battery, that is, lowering the operating cost, are directly taken as an advantage of the electric drive tool. Moreover, the EDLC 5 内 in the electric drive tool 10 is often charged to the maximum rated voltage Vs without being excessive or insufficient, so that the EDLC 50 can be prevented from being damaged or malfunctioned due to an excessive charging voltage, and the EDLC 50 can be avoided. If the charging voltage is too small, there is a shortage of shackles in terms of torque or number of uses. Further, when the electric drive tool 1 is used for the screw pickup operation, the PWM control method maintains the degree of rotation at a constant value while the output voltage of the EDLC 50 is higher than the preset intermediate reference voltage Vf. The stability of the screw locking ability. Further, on the user side, as long as the operation is the same, the driver grip portion 18 is directly gripped to insert the electric drive tool 10 into the drive tool holding portion 76 of the charging unit 7A, so that the electric drive tool can be simply turned on. Place 2269-9098-PF; Ahddub 35 200821099 in charging mode. In addition, after Lei said that the state display lamp 3 of the electric driving tool 1 切换 is switched from the green blinking state to the continuous lighting (after the charging is completed), if the grip portion 18 of the electric driving tool 10 is gripped at any time, The driving tool holding portion 76 of the charging unit 7A is pulled out 'the electric driving tool 1G can be used arbitrarily directly for the pickup operation. Further, it is also possible to support any of the fixed type (Fig. 9) and the wall type (Fig. 1) in the use type (switching use). In this way, the electric drive tool and the electric drive tool device in the above embodiment have the advantages of Gufa k /, clothing, and the charging pull type and the use mode, and have comprehensive advantages in use, even if charging and discharging. The cycle is short, and the user is not too annoyed to improve the workability of the original screw-clip operation. The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the scope of the invention. For example, the number of EDLCs accommodated in the electric drive tool 1G may be any number, and the structure, shape, material, and the like of the respective components constituting the electric drive tool 1 () and the charging unit 7 may be arbitrarily modified. For example, in the above-described embodiment, the connector terminals 56, 60 on the side of the electric drive tool 1 and the contacts 98r (i〇〇l), i〇〇r (98l) on the side of the charging unit 7 are provided. And the configuration is an example in which an arbitrary connection terminal can be used. Further, in the charging unit 70, the columnar portion 16 of the outer casing column portion 16 of the electric drive tool 1 is housed in the above-described embodiment, but the column hole 86 for driving the tool holding portion 76 is not limited thereto, for example. A portion of the side wall may be open or may be constructed as a frame. The engagement pattern of the electric drive tool 1 to the charging unit is not limited to the plug-in type in the above embodiment, and may be of various types. 2269-9098-PF; Ahddub 36 200821099 Further, in the above-described embodiment, a charge control circuit for controlling the charge voltage of the EDLC 50 is provided in the electric drive tool 10. However, as shown in Figs. 19 and 20, the configuration of the ed1C charging control circuit may be provided on the side of the charging unit 7A. In this configuration example, the microcomputers 112A, 112B are mounted on the charging unit 7A and the electric driving tool 10, and the microcomputer 112B on the side of the electric driving tool 10 is complicated to control the function of the rotation of the motor 46. The microcomputer ii2A complex controls the charging voltage of the EDLC50. More specifically, as shown in FIG. 19, the charging unit 70 is provided with a microcomputer ii2A, a voltage monitoring circuit 12A, a switch 58 dedicated for charging start, and the like, and is provided with a power supply voltage or an action. Voltage DC/DC converter 144A and voltage regulator 138A. The micro-computer 112A performs the same operation as that of the above-described embodiment of the light-emitting diodes 196, 198, only when the charging diodes are made to emit the diodes ι96 Α and i98a. Further, on the side of the electric drive tool 10, the light-emitting diode 196β is a red light-emitting diode, for example, when the voltage Ved of the EDLC 50 drops before the usable lower limit voltage. Further, the light-emitting diode 198B is a green light-emitting diode, and is turned on after the brake switch 40 is turned on. 200B is a resistor. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the appearance of an electric drive tool according to an embodiment of the present invention. Fig. 2 is a schematic exploded perspective view showing the arrangement of main components or mechanisms housed in the electric drive tool of the embodiment. Fig. 3 is a side view showing the state of the charging type unit of the fixed type of use in the electric drive tool of the embodiment type 2269-9098-PF; Ahddub 37 200821099. Fig. 4 is a plan view corresponding to the side view of Fig. 3. Fig. 5 is a right side view corresponding to the side view of Fig. 3. Fig. 6 is a side view showing a state in which a wall-mounted type of charging unit is used in an electric drive tool of an embodiment. Fig. 7 is a plan view corresponding to the side view of Fig. 6. Fig. 8 is a left side view corresponding to the side view of Fig. 6. Fig. 9 is a side elevational view showing the type of use of the fixed type relating to the charging unit in the electric drive tool of the embodiment. Fig. 10 is a side elevational view showing the wall-mounted type of use of the charging unit in the electric drive tool of the embodiment. Fig. 11 is a view showing a first order of the relative positional relationship of each part when the electronic connection between the electric drive tool and the charging unit is established in the embodiment. Fig. 12 is a view showing a first order of the relative positional relationship of each part when the electronic connection between the electric drive tool and the charging unit is established in the embodiment. Fig. 13 is a view showing a first order of the relative positional relationship of each part when the electronic connection between the electric drive tool and the charging unit is established in the embodiment. Fig. 14 is a view showing the circuit configuration of a control unit mounted on an electric drive tool of an embodiment. Fig. 15 is a waveform diagram showing the waveforms of the respective portions generated by the EDLC charging control mode of the embodiment. 2269-9098-pF; Ahddub 38 200821099 Figure 16 is a waveform diagram showing one modification of the implementation of the edLc charging control mode of the embodiment. Fig. 17 is a waveform diagram showing another modification of the eDLC charging control mode of the embodiment. Fig. 18 is a view showing the relationship between the voltage-no-load rotation speed characteristic generated by the motor drive control method using the PWM control method in the embodiment. Fig. 19 is a view showing the configuration of a main circuit provided on the side of the charging unit in the control unit in a modification of the embodiment. Fig. 20 shows the configuration of the main circuit provided on the side of the electric drive tool in the control of one of the modifications of the embodiment. ° [Main component symbol description] 10 ~ electric drive tool; 14 ~ drill bit; 18 ~ grip portion; 22 ~ upper ridge; 26 ~ positive; 3 〇 ~ status display light; 34 ~ lower slit; 3 8~ Trigger; 42~ clutch; 4 6~ stirrup; 50A~ first electric double layer capacitor; 5 2~ micro switch; 12~ outer casing; 16~ columnar part; 20~ drive tool bit; 24~ upper slit; ~ section difference; 32 ~ lower ridge; 3 6 ~ minus; ~ brake switch; 44 ~ gear; 48 ~ printed circuit board; 50B ~ second electric double layer capacitor; 54 ~ slide switch; 2269-9098-PF; Ahddub 39 200821099 58 ~ charging start with micro switch; 72 ~ frame; 76R ~ end face; 78 ~ charger; 8 2 ~ electric winding; 86 ~ cylindrical hole (accommodating part); 94R ~ upper right guiding groove; 96R~ lower right guiding groove; 1 0 2 R~ positive sign; 1 04R~ minus sign; 110~ control part; 118~FET (switching circuit); 124~ optocoupler (switching circuit); 17 6~ power supply Voltage detection circuit; 112A, 112B~ microcomputer; 70~ charging unit; 74~ support board (support department) ; 76L ~ end face; 8 0 ~ power cord; 8 4 ~ mounting plate; 92 ~ screw; 94L ~ upper left guiding groove · 96L ~ lower left guiding groove; 1 〇 2L ~ minus; 104L ~ positive; 112' 112A' 112B ~ microcomputer 120 ~ voltage monitoring circuit; 162 ~ FET (switching element); 196, 198 ~ light emitting diode; A ~ arrow; 98R ~ upper right side contact (unit connection terminal); 98L ~ upper Left contact (unit connection terminal), · 100R~ lower right contact (unit connection terminal); 100L~ lower left contact (unit connection terminal); 60~ lower connector terminal (driver connection terminal); 76~ Drive tool holding portion (drive tool engagement portion), · 56 to upper connector terminal (drive tool connection terminal); 122 to rated voltage detection circuit (reference power detection circuit). 2269-9098-PF; Ahddub 40

Claims (1)

200821099 X. Patent application scope: 1 · An electric drive tool, having: a bit holder, which can support the driving tool bit in an annual, J loading and unloading manner; a motor that rotationally drives the above bit holder; a barter for supplying the motor to the motor; a driving tool connecting terminal for electrically connecting the electric double layer capacitor and an external DC power source; and a control unit for controlling a charging voltage of the electric double layer capacitor and controlling a rotation operation of the motor; And storing or supporting the iron head holder, the motor, the electric double layer capacitor, the driving fixture connection terminal, and the control unit; wherein the control unit has: a switch circuit for the DC power source and The electric double layer capacitor is connected in series; the voltage monitoring circuit is connected in parallel to the DC power source and the electric double layer capacitor; and the charging control circuit is configured to supply the charging current to the electric double layer electric grid state. The above-mentioned first-switch circuit is turned on, in order to make the above voltage monitoring circuit Controlling the charging voltage of the electric double layer capacitor so that the first switching circuit is turned off, and when the state in which the charging voltage of the electric double layer capacitor reaches the first reference voltage is detected by the voltage monitoring circuit, the power is stopped. Charging of double layer capacitors. 2. The electric drive tool of claim </ RTI> wherein the first switch circuit is repeatedly turned on and off in a certain cycle. 2269-9098-PF; Ahddub 41 200821099 3. If the voltage monitoring circuit of the first or the above-mentioned first closed state is passed, the charging voltage of the predetermined extension container is passed. The electric drive tool of the two items, wherein the switch circuit is switched from the open state to the late time, and the electric double-layer electric power is monitored. 4. The electric drive tool according to the third item of the patent scope, wherein the electric control circuit is in the above _ When the period in which the switching circuit is turned off is ended, the charging voltage of the electric double layer capacitor is monitored. In the above, the increase in the number of times of repetition of the above-mentioned cycle of the voltage monitoring and batching control circuit Ik increases the ratio of the off period. 6. The electric drive tool according to any one of the items in the scope of the patent application, wherein the electric drive tool of any one of items i to 4 of the claim patents, wherein the voltage monitoring circuit repeats with the above cycle The increase increases the cycle time. 7. The electric drive tool of the application of the above-mentioned item, wherein the voltage monitoring circuit has: a reference voltage detecting circuit that outputs a first logic value when the applied voltage is lower than the first reference voltage a signal that outputs a second logic value when the applied voltage is above the first reference voltage; and a second switching circuit that is connected in parallel with the reference voltage detection circuit; The reference voltage detecting circuit is electronically blocked, and the second switching circuit is turned off, and the first switching circuit is turned on in order to apply a charging voltage of the electric double layer electric grid to the reference voltage detecting circuit. 8. The electric drive tool of claim 7 of the patent scope, wherein the upper 2269-9098-PF; Ahddub 42 200821099 describes the reference voltage detection circuit having: the shunt regulator 'contains the switching element and is based on the voltage level of the applied voltage The switching element obtains one of an on state or a non-conduction state; the first illuminating element ′ is connected in series with the shunt regulator; the first illuminating element and the first illuminating element together form a first optocoupler; a binary signal generating circuit connected to the first light receiving element, and generating a signal of the first logic value when the first light receiving element is in a non-conducting state, and generating the above when the first light receiving element is in an on state a signal of the second logic value; § the voltage of the electric double layer capacitor is lower than the first reference voltage, and the shunt regulator maintains the switching element in a non-conducting state, whereby the first optocoupler is The light-emitting element does not emit light, and the first light-emitting element remains in a non-conducting state, and the second-level signal generates electricity. Generating a signal of the first logic value; when the voltage of the electric double layer capacitor reaches the reference voltage, the shunt regulator causes the switching element to be in an on state, whereby in the first optocoupler, the illuminating The second light-receiving element is in an on state, and the second signal generating circuit generates the second logic value signal; the second switching circuit has a second light-receiving element connected in series with the reference voltage detecting circuit; And 2269-9098-PF; Ahddub 43 200821099 the second light-emitting element, and the second light-receiving element together constitute a second optocoupler; by selectively controlling the second light-emitting element to be one of a light-emitting state or a non-light-emitting state And selectively switching the second light receiving element to one of a conductive state or a non-conductive state. The electric drive tool according to any one of claims 1 to 8, wherein the control unit has: a switching element that is connected in series with the electric double layer capacitor and the motor; and a voltage detecting circuit for the electric The motor of the double layer capacitor detects an output voltage; and the motor control circuit, in order to generate a rotational torque of the motor, when the output voltage of the electric double layer capacitor is higher than the second reference voltage, the no-load rotation speed of the motor is maintained in advance The set reference rotational speed, the switch 7L is controlled to be turned on and off by a pulse width control method, and when the output voltage of the electric double layer capacitor is lower than the second reference voltage, the switching element is kept in an open state. An electric drive tool device, comprising: the electric drive tool according to any one of claims 1 to 9; and the charging unit housing or supporting the DC power source and slidably attached to the above a driving tool engaging portion of the electric driving tool, and a #-connecting terminal electrically connected to the DC power source and physically and electronically connectable with the driving tool connecting terminal of the electric driving fixture; 2269~9098-PF; Ahddub 44 200821099 The drive tool connecting terminal of the electric drive target tool and the charging unit early connection terminal are physically and electronically connected by the electric drive driver. 1 1 · An electric drive tool device, with an electric drive, &quot;/, a drill chuck that supports the drive tool drill bit in a detachable manner, and a motor that condenses and drives the drill holder The above-mentioned motor supply circuit &amp; belt + vertical and electric layer, the electric double-layer capacitor and the straight-line power supply of the cymbal are electrically connected to the driving tool connection terminal, and the control control material (4) is controlled (4) And accommodating or supporting the above-mentioned drill holding gain, the motor, the electric double layer capacitor, the driving tool connecting terminal and the outer casing of the first control unit; and the charging unit 7 〇, accommodating or supporting the DC power supply, and being detachable The second control neighbor of the driving tool of the electric double-layer capacitor of the above-mentioned electric driving tool is electrically connected to the DC power supply and the second control unit. a unit connection terminal physically and electronically connected to a drive tool connection terminal of the electric drive tool; wherein the second control unit has: a first switching circuit for serially connecting the DC power source and the electric double layer capacitor; a voltage monitoring circuit for parallel connection of the DC power source and the electric double layer capacitor; and a charging control circuit, in order to make the DC power source The electric double-layer electric grid supplies the charging current, so that the first switching circuit is turned on, in order to make the voltage monitoring circuit of the above-mentioned electric double-layer capacitor of the voltage monitoring circuit of the upper 45 2269-9098~PF; Ahddub 200821099 make the first switching circuit Turning off, when the state in which the charging voltage of the electric double layer capacitor reaches the first reference voltage is detected by the voltage monitoring circuit 35, the charging of the electric double layer capacitor is stopped; by the electric driving tool being engaged to The drive tool engagement portion is electrically and electronically connected to a drive tool connection terminal of the electric drive tool and a unit connection terminal of the charging unit. 12. The electric drive tool device of claim 1G or u, wherein the drive tool connection terminal of the electric drive tool includes a drive tool connection terminal of a positive electrode and a drive tool connection terminal of a negative electrode, and a unit connection terminal of the above charging unit a unit connection terminal including a positive electrode and a cell connection terminal of a negative electrode. When the electric drive tool is normally tempered to the charging unit, the unit of the negative electrode is before the unit connection terminal of the positive electrode is in contact with the driving tool connection terminal of the positive electrode. The connection terminal first comes into contact with the drive tool connection terminal of the above negative electrode. The electric drive tool device according to any one of the above claims, wherein the micro-switch is disposed in the vicinity of the drive tool connection terminal or the unit connection terminal, and the electric drive tool is correctly engaged to the = charging unit (four) b (four) At the time of the unit, the unit connection terminal or the above-mentioned driving tool connection end + ί the above-mentioned switch is opened to respond to the charging operation of the micro switch. An electric tool device according to any one of the items 10 to 13 of the above-mentioned electric double-layer capacitor, wherein the above-mentioned outer casing has ... 2269-9〇98~PF; Ahddub 46 200821099 The columnar section ' extends in the direction coaxial with the drive tool bit supported by the drill holder described above, go! l extending and receiving the bit holder, the horse and the connecting terminal; and the grip portion 'approx. a right angle or a pure angle from the side of the bit holder and extending from the columnar portion ^ In the above charging unit 70, the driving tool merging portion has a receiving portion 'the correct state or tendency τ in relation to the (4) jade connecting terminal and the domain unit connecting terminal, from the bit holder The side receives the columnar portion of the upper casing along the axial direction, and the unit connecting terminal is mounted on the fourth portion of the accommodating portion, and the unit connecting terminal and the driving of the electric driving tool are among the accommodating portions. The tool connection terminal is connected. The electric drive tool device according to claim 14, wherein in the electric drive tool, the outer casing has a raised portion that is bulged outward from a radial direction of the columnar portion in a longitudinal direction of the columnar portion. Extending from the side of the drill holder, a slit extending in a longitudinal direction of the columnar portion of the raised portion to the J-shaped portion is disposed, and the drive tool connecting terminal is disposed at a depth of the slit; In the charging unit, the housing portion of the driving tool engagement portion has a guiding groove for guiding a raised portion of the outer casing of the electric driving tool, and the unit connecting terminal is disposed in the guiding groove; the electric driving tool The raised portion of the outer casing is guided by the guiding groove of the driving tool merging portion. When the columnar portion of the outer casing of the electric driving tool is inserted into the receiving portion of the driving tool engaging portion, the unit connecting end 2269-9098- PF; Ahddub 47 200821099 The opposite entry into the slit of the above-mentioned ridge, and connected to the above-mentioned driving tool connection terminal; ^ in the above electric In the driving tool, the outer casing has first and second raised portions at different positions on the outer circumference of the columnar portion, and a driving tool connecting terminal of the positive electrode is disposed deep in the slit of the fourth (fourth), and the second raised portion is a driving tool connecting terminal of the negative electrode is disposed at a depth of the slit; a in the charging unit, the receiving portion of the driving guard merging portion has first and second guiding grooves for guiding the first and the first a second ridge portion' having a positive electrode connection terminal disposed in the first guide groove, a negative electrode unit connection terminal disposed in the second guide groove, and first and second ridges of the electric drive tool The portions are respectively guided by the first and second guiding grooves of the charging unit, and when the columnar portion of the outer casing of the electric driving tool is inserted into the housing portion of the driving tool engaging portion, the unit of the positive electrode and the negative electrode of the charging unit The connection terminal is relatively inserted into the slit of the first and second raised portions and is connected to the driving tool connection terminal of the positive electrode and the negative electrode; The first raised portion and the second raised portion have different widths in an outer circumferential direction of the columnar portion of the outer casing. In the charging unit, the first guiding groove has an inner circumferential direction of the housing portion. The second guide groove has a width corresponding to the second raised portion in an inner circumferential direction of the housing portion in a width corresponding to the first raised portion. 16. The electric drive tool device of claim 14 or 5, wherein in the charging unit, the receiving portion penetrates the driving 2269-9098-PF; the Ahddub 48 200821099 tool merging portion is in the driving tool The guide groove and the unit connection terminal are respectively disposed at predetermined positions in the vicinity of the first opening of the accommodating portion of the human mouth, and are also located at a predetermined position in the vicinity of the second opening opposite to the first opening. The guiding groove guard and the early element connecting terminal are disposed; the columnar portion of the outer casing of the electric driving tool may be inserted into the receiving portion of the charging unit from a side of one of the first and second openings At the same time, each of the unit connection terminals may be connected to the drive tool connection terminal of the electric drive tool corresponding thereto in the above-mentioned housing portion. The electric drive tool device of any one of clauses 14 to 16, wherein the charging unit is rotatable about a fulcrum perpendicular to a central axis of the accommodating portion of the driving tool engaging portion. The above-described driving tool engaging portion is supported, and has a support portion that can be fixed at an arbitrary angle. , 2269-9098-PF; Ahddub 49