DE112018001686T5 - Electrically powered tool - Google Patents

Abstract

The present invention provides an electrically driven tool on which a communication adapter can be arranged to save space. An electrically driven tool (1) comprises a motor (6), a holding section (3) which can hold a cutting tool (43) which is driven by the motor (6) and can cut a cutting material, and a battery attachment section (4) , on which a battery for supplying the motor (6) with electrical energy can be attached. A communication adapter (202) is arranged on the battery mounting section (4) in order to operate an external device coupled to the operation of the motor (6).

Description

Technical field

The invention relates to electrically driven tools with a motor, and in particular to an electrically driven tool on which a radio coupling unit is arranged in order to couple an external device to the drive of a motor.

General state of the art

Electrically driven tools such as grinders and the like are usually used to carry out machining work and the like on a cutting material such as stone or concrete or the like. Since dust and chips are generated when using these electric power tools, the electric power tool and an external device such as a dust collector or the like are connected in advance by means of a hose, and the cutting or machining work is carried out with the operation of this external device. When such a hose is connected, the electrically powered tool can directly suck in the dust and chips generated, thereby preventing the dust and chips from flying around at the work site. In this way, the quality of the work environment can be increased. That is, an improvement of the work environment can be achieved. In Patent Document 1 below (unexamined Japanese Patent Application No. 2012-071218 ) discloses a technique for operating / stopping a dust collector coupled to operating / stopping an electrically powered tool. It is therefore not necessary to operate a separate switch to operate / stop the electrically powered tool and to operate / stop the dust collector. Thus, an improvement of the environment at the place of work can be achieved without impairing the user friendliness with regard to the switch actuation.

Summary of the invention

Object of the invention

However, in the technique of the above-mentioned Patent Document 1, it is necessary to connect the electric power tool and the dust collector with a cable. Therefore, there is sometimes the problem that the cable is a hindrance and disruption during the cutting or cutting work (when using the electrically driven tool). To solve this problem, it is conceivable to connect the electrically driven tool and the dust collector by means of radio communication. To implement this idea, however, a communication adapter must be arranged on the electrically driven tool and on the dust collector. If it is a small electrically powered tool such as a grinder, the new problem arises that the communication adapter must be arranged to save space.

The present invention has been made in view of this problem, and its object is to provide an electrically driven tool on which a communication adapter can be arranged to save space.

Means to solve the task

The object is achieved by the invention specified below. A first invention is an electrically powered tool that includes a motor, a holding portion that can hold a cutting tool that is driven by the motor and can cut a cutting material, and a battery attachment portion on which a battery for supplying electric power to the motor can be attached. A communication adapter is disposed on the battery mounting portion to operate an external device coupled to the operation of the motor.

According to the first invention, the communication adapter can be arranged in a space-saving manner if it is a small, electrically powered tool, such as a grinder.

A second invention is the electric power tool of the first invention, wherein an air suction port is formed on the battery attachment portion through which outside air can be taken. An exhaust air opening is formed on the holding section, via which outside air taken in through the air intake opening can be conveyed out via an air duct. The communication adapter is arranged with the air intake opening as a boundary with respect to the air duct between a connection plate for attaching the battery and a control device for controlling the motor.

According to the second invention, in the case where air flowing in the air duct contains dust and the like, the dust can be prevented from reaching the communication adapter. Therefore, malfunction of the communication adapter can be prevented.

A third invention is an electric power tool that includes a motor, a holding section that can hold a cutting tool that is driven by the motor and can cut a cutting material, and a power supply section for supplying electric power to the motor. Between the engine and the power supply section, a communication adapter is arranged to operate an external device coupled to the operation of the motor.

According to the third invention, the same effect as that of the first invention can be obtained.

A fourth invention is the electrically driven tool of the third invention, wherein an air suction opening is formed on the power supply section through which outside air can be taken in. An exhaust air opening is formed on the holding section, via which outside air taken in through the air intake opening can be conveyed out via an air duct. The communication adapter is arranged with the air intake opening as a boundary with respect to the air duct.

According to the fourth invention, the same effect as that of the second invention can be obtained.

A fifth invention is the electrically driven tool of the third invention, wherein the communication adapter is arranged on an opening side of a housing of the control device for controlling the motor.

According to the fifth invention, there is a structure in which the communication adapter and the air duct inside the electric power tool (the duct in which outside air taken in through the air suction port is conveyed to the exhaust air port) can be separated from each other by the control device. Since in this way outside air taken in through the air intake opening does not easily come into contact with the communication adapter by means of the control device, the dust resistance of the communication adapter can be increased.

A sixth invention is the electrically driven tool of the fifth invention, wherein an air suction opening is formed on the power supply section through which outside air can be taken in. An exhaust air opening is formed on the holding section, via which outside air taken in through the air intake opening can be conveyed out via an air duct. A connector that is electrically connected to the communication adapter is covered by a rib such that it is separated from the air duct.

Since, according to the sixth invention, outside air received through the air suction opening does not easily come into contact with the communication adapter due to the rib, the dust resistance of the communication adapter can be increased.

A seventh invention is an electric power tool that includes a motor, a holding portion that can hold a cutting tool that is driven by the motor and can cut a cutting material, a motor housing that houses the motor, and a handle housing that extends from the Engine case extends. A communication adapter is arranged on the side of the handle housing opposite the motor housing in order to operate an external device coupled to the operation of the motor.

According to the seventh invention, the same effect as that of the first invention can be obtained.

An eighth invention is the electrically driven tool of the seventh invention, an air intake opening being formed on the side of the handle housing opposite the motor housing, through which outside air can be taken in. An exhaust air opening is formed on the holding section, via which outside air taken in through the air intake opening can be conveyed out via an air duct. The communication adapter is arranged with the air intake opening as a boundary with respect to the air duct. A speed controller for changing the speed of the motor is arranged on the side of the handle housing opposite the motor housing.

According to the eighth invention, the same effect as that of the second invention can be obtained.

A ninth invention is the electrically powered tool of one of the first to eighth inventions, the cutting tool being a circular disk-shaped grindstone.

According to the ninth invention, machining work and the like can be performed on a cutting material such as stone or concrete or the like.

A tenth invention is the electric power tool of any one of the first to ninth inventions, wherein the external device is a dust collector.

According to the tenth invention, dust and swarf generated when using the electrically driven tool can be sucked in directly, for example, via a hose. Therefore, the flying of the dust and the chips at the place of work can be prevented. The quality of the work environment can thus be increased. That is, an improvement of the work environment can be achieved.

list of figures

• 1 eine perspektivische Gesamtansicht eines Schleifgeräts eines ersten Ausführungsbeispiels;
• 2 eine Seitenansicht von 1;
• 3 eine Ansicht eines Zustands, wobei eine Gehäusehälfte aus 1 abgenommen wurde;
• 4 eine Ansicht eines Zustands, wobei eine Gehäusehälfte aus 2 abgenommen wurde;
• 5 eine Rückseitenansicht von 1;
• 6 eine Schnittansicht entlang der Linie VI-VI aus 2;
• 7 eine Schnittansicht an der Linie VII-VII aus 2;
• 8 eine schematische Ansicht der Verbindung zwischen dem Schleifgerät 1 aus 1 und einem Staubsammler über einen Schlauch;
• 9 ein Blockdiagramm, das die elektrische Konfigurierung des Schleifgeräts und des Staubsammlers aus 8 darstellt;
• 10 ein Abwandlungsbeispiel von 8;
• 11 eine Längsschnittansicht eines Schleifgeräts gemäß einem zweiten Ausführungsbeispiel;
• 12 eine Längsschnittansicht eines Schleifgeräts gemäß einem dritten Ausführungsbeispiel;
• 13 ein Abwandlungsbeispiel des Schleifgeräts des zweiten Ausführungsbeispiels; und
• 14 ein Abwandlungsbeispiel des Schleifgeräts des dritten Ausführungsbeispiels.

Show it:

• 1 an overall perspective view of a grinding device of a first embodiment;
• 2 a side view of 1 ;
• 3 a view of a state, with a housing half 1 was removed;
• 4 a view of a state, with a housing half 2 was removed;
• 5 a rear view of 1 ;
• 6 a sectional view along the line VI-VI out 2 ;
• 7 a sectional view on the line VII-VII out 2 ;
• 8th a schematic view of the connection between the grinder 1 out 1 and a dust collector over a hose;
• 9 a block diagram showing the electrical configuration of the grinder and the dust collector 8th represents;
• 10 a modification example of 8th ;
• 11 a longitudinal sectional view of a grinding device according to a second embodiment;
• 12 a longitudinal sectional view of a grinding device according to a third embodiment;
• 13 a modification example of the grinder of the second embodiment; and
• 14 a modification example of the grinder of the third embodiment.

Embodiment of the invention

An embodiment of the present invention is described in detail below with reference to the figures.

First embodiment

With reference to 1-9 Embodiments of the present invention will now be described. A grinder is an example of the electrically powered tool 1 described that can cut a cutting material such as stone or concrete or the like. In the following description, the information relating to the top, bottom, front, rear, left and right relates in each case to the directions indicated in the figures. The same applies to all of the exemplary embodiments described below.

As in 1 . 2 and 5 shown is the grinder 1 essentially a tubular main body housing 2 that in the front section the brushless motor 6 can accommodate a gearbox 3 , one of which is in front of the main body case 2 fixed spindle 7 protrudes downward, and one at the rear end of the main body case 2 formed battery mounting section 4 educated. On the battery attachment section 4 is a battery pack 5 with a battery 5a (For example, 18 V DC) attached as a power source.

The main body case 2 is formed by a pair of left and right case halves 2a . 2 B with several screws 8th are assembled. A brushless motor receiving section 6 is a round tube section 9 with the greatest thickness and behind it is a corner tube section 10 , which is narrower than the round tube section 9 and a switch described below 46 receives. The round tube section 9 and the corner tube section 10 correspond to the "motor housing" and the "handle housing" of the claims. The corner tube section 10 has a length such that an operator's four fingers (index finger to little finger) rest thereon and is used as a handle held in use. That is, behind the brushless motor 6 is an easy to grip handle with a narrow diameter.

With the brushless motor 6 it is a motor of the inner rotor type, which consists of a stator 11 and a rotor 12 is formed on the inside (see 3 . 4 and 6 ). The stator 11 is made of a cylindrical stator core made of several laminated sheets 13 , one in the axial direction of the stator core 13 front insulators each provided on a front and rear end surface 14 and rear insulator 15 and several coils 16 educated.

The stator 11 is supported by ribs 25 , each on the inner surface of the housing halves 2a . 2 B of the main body case 2 project in the circumferential direction, in a position coaxial with the round tube section 9 held. In front of the support ribs 25 a locking rib (not shown) is provided, which in a on the front insulator 14 provided recess (not shown) snaps in, and behind the support ribs 25 a protrusion (not shown) is provided which fits into a rear insulator 15 provided, the positioning serving recess portion (not shown) is used, whereby a positioning takes place.

The rotor 12 in turn consists of a rotating shaft arranged on the central axis 26 , an essentially cylindrical rotor core 27 on the circumference of the rotating shaft 26 is arranged and comprises a plurality of steel sheets laminated one on top of the other, and four plate-shaped permanent magnets (not shown) formed inside the rotor core 27 are fixed. The permanent magnets are fixed in through holes by means of adhesive and / or pressing, which are formed in such a way that they are on a cross-sectional area of the rotor core 27 are arranged on four sides of a square, the center of which is the rotating shaft 26 is.

A rear end of the rotating shaft 26 is from a shaft bearing 29 stored by a between the main body case 2 and the gearbox 3 arranged partition plate 28 is held, and a front end jumps into the interior of the gear housing 3 in front. Behind the partition plate 28 is a centrifugal fan 30 on the rotating shaft 26 attached, and an inner front end surface of the main body case 2 in which the centrifugal fan 30 is formed in the form of a funnel that narrows towards the rear and can create an air stream radiating from the centrifugal fan 30 goes out, steer forward. On the partition plate 28 a through hole, not shown, is provided which blocks the air flow from the centrifugal fan 30 to the gearbox 3 can lead there. The gearbox 3 corresponds to the "holding section" of the claims.

The rear end of the rotating shaft 26 is from a shaft bearing 32 stored by a mounting plate 31 is held at the rear end of the round tube section 9 from the left and right half of the housing 2a . 2 B projects. It is also on the rotor 12 between the rotor core 27 and the centrifugal fan 30 a front stop 33 intended. The front stop 33 is for example made of brass and is a round plate that has the same diameter as the rotor core 27 and is coaxial with the rotor core 27 on the rotating shaft 26 appropriate.

It is also between the rotor core 27 and the rear shaft bearing 32 a rear stop 34 intended. The rear stop 34 is made of brass, for example, and is a round plate that has a smaller diameter than the rotor core 27 and is coaxial with the rotor core 27 on the rotating shaft 26 appropriate. However, the outside diameter of the rear stop is 34 larger than an inner circle surrounded by the four permanent magnets, and the rear stop 34 is located behind the permanent magnet.

The gearbox 3 is fixed by four screws 35 , which are carried out at four corners, over the partition plate 28 into one on the outer periphery of the front end of the main body case 2 provided screwing section 36 are screwed. At the front end of the rotating shaft 26 that in the gearbox 3 protrudes is a bevel gear 37 attached and is with one at the top of the spindle 7 attached bevel gear 38 toothed. 39 denotes one on the front surface of the transmission case 3 formed exhaust air opening. 40 denotes a shaft lock with which the rotation of the spindle 7 over the bevel gear 38 can be locked.

The spindle 7 is made up of an upper and lower shaft bearing 42 stored by the gearbox 3 and one on the lower portion of the gearbox 3 attached storage box 41 can be stored, and at their lower end a cutting tool 43 such as a round disk-shaped grindstone. On the outer circumference of the storage box 41 is through a belt-shaped clamp 44 a wheel cover 45 attached that a rear half portion of the cutting tool 43 covers.

Inside the main body case 2 46 denotes a switch which is operated by pressing a key 47 is turned on and by one of the inner surface of the housing halves 2a . 2 B protruding holding rib 48 in a position with the button facing forward 47 at the top of the corner tube section 10 is held. This is under the switch 46 a room 49 for passing power lines (not shown) and communication lines (not shown). In front of the holding rib 48 jumps on the housing halves 2a . 2 B a partition 50 before that the brushless motor 6 and the switch 46 separates from each other, and between the partition 50 and the switch 46 is a change lever as a lever for forming a printing mechanism 51 intended.

The change lever 51 is like in 4 shown by one of the inner surface of the housing halves 2a . 2 B protruding pin supported with both ends on a support shoulder (not shown) 53 guided and rotatably supported, being on the underside of the pin 53 a cam section 54 is formed before the key 47 of the switch 46 arranged and arched backwards, being at the top of the pin 53 an upwardly projecting arm section 55 is formed. In the main body case 2 above the change lever 51 is as a slide member that can slide along an inner-front groove extending in the front-rear direction, which is in the inner surface of the main body case 2 is provided a sliding plate 57 provided, and in a coupling hole (not shown) at the rear end of the slide plate 57 is an arm section 55 of the change lever 51 introduced.

On the outer surface at the top of the main body case 2 is an outer guide groove running in the front-back direction 59 formed, and in the outer guide groove 59 is as an actuator a switch button 60 moved back and forth. On the underside of the switch button 60 jumps an L-shaped latch 61 facing down, protrudes through one in the main body case 2 formed slot running in the front-rear direction 62 into the main body case 2 and is in one at the front end of the slide plate 57 provided locking hole 63 engaged. If the switch button 60 in the outer guide groove 59 is pushed forward, the sliding plate also moves with it 57 , and the arm section 55 at the rear end is shifted forward, which is why the changeover lever 51 yourself around the pen 53 as the center of 2 turns to the right and the cam section 54 moved backwards, causing the button 47 is pressed.

This switch-on state is maintained by one at the front end of the switch button 60 projecting tab (not shown) on a front at the bottom portion of the outer guide groove 59 provided projection section (not shown) is locked. If, on the other hand, the switch button 60 is pushed back, the sliding plate moves 57 to the rear, the change lever 51 is about the arm section 55 turned to the left and the cam section 54 from the button 47 moved away. However, is a torsion spring 64 on the pen 53 set on the change lever 51 and on the partition 50 is locked, and tensions the changeover lever 51 clockwise (switch-off side of the switch).

Inside the battery mounting section 4 is an adapter mounting section 200 intended. The adapter mounting section 200 is designed such that a communication adapter 202 is releasably attachable to it. The adapter mounting section 200 has an adapter receiving portion 204 on the communication adapter 202 can record. This adapter receiving section 204 is in the interior of the battery mounting section 4 ,

In addition, the adapter attachment portion has 200 a clasp 208 on an exposed adapter insertion opening 206 covered that for plugging in the communication adapter 202 into the adapter receiving section 204 serves. The adapter insertion opening 206 is on the right front surface of the battery mounting portion 4 formed and designed such that the communication adapter 202 with respect to the adapter insertion opening 206 can be inserted and removed in the left-right direction.

The adapter mounting section 200 shows the clasp 208 to cover the adapter insertion opening 206 on. The closure 208 is designed such that it has the adapter insertion opening 206 can open and close in the left-right direction. The closure 208 is intended to prevent dust or water from entering through the adapter insertion opening 206 into the adapter receiving section 204 limit. Attaching and detaching the communication adapter 202 takes place in the opened state of the closure 208 , If the communication adapter 202 completely into the adapter receiving section 204 the closure can be inserted 208 to be closed completely. By the closure 208 is closed and the adapter insertion opening 206 covers the penetration of dust or water into the adapter receiving section 204 prevented.

The battery pack 5 has a connecting portion 66 with several connections, not shown, on the upper section of an outer box 65 in which several cells are accommodated and a pair of rail sections 67 jumps on both sides of the connection section 66 in front. The battery mounting section 4 has an opening portion that the connecting portion 66 the battery pack 5 picks up from above, and a pair of left and right guide rails jump on either side of the opening portion 68 before that with the rail sections 67 the connecting section 66 engage. Between the guide rails 68 is a connection socket facing upwards 69 provided the connection plates 70a . 70b having the connections of the connecting section 66 correspond.

The battery pack 5 will be in a vertical position with the connecting section 66 forward from above the battery mounting section 4 engaging the rail sections 67 with the guide rails 68 moved, causing the connections of the connecting section 66 and the connection plates 70a . 70b of the connection base 69 be electrically connected. 71 denotes one on the battery pack 5 provided latching claw, which in a on the battery attachment portion 4 provided recess section 72 clicks into place and the battery pack 5 guaranteed. By the claw 71 by pressing a release button 73 in the outer box 65 the battery pack can be pulled in 5 to solve.

On the battery attachment section 4 is in front of the connection base 69 a control device 74 added. At the control facility 74 is a circuit board 75 , on the six FET (not shown) that the coils 16 of the brushless motor 6 correspond to a capacitor 76 , a microcomputer (not shown), an LED (not shown) and the like are arranged in a bowl-shaped housing 78 made of aluminum, and it is through the top and bottom of the inner surface of the case halves 2a . 2 B provided holding sections 79 held, here the lower holding section 79 positioned further forward than the top, causing the control device 74 with respect to the axis of the main body case 2 is supported in an inclined position in which the lower end is positioned further forward than the upper end.

Because of this tendency, even when a capacitor is provided 7 at the end section of the circuit board 75 positioning on the center side in the main body case 2 possible, which is why it is not necessary due to the capacitor 76 a protrusion shape on the main body case 2 provide. Due to the inclination of the control device 74 the distance between the housing also increases 78 and the connection base 69 , which is why the risk of current flow between them is extremely low. The condenser 76 can also be provided with extended electrode connections and from the circuit board 75 be provided away.

The control device 74 has a microcomputer with a CPU 74a and a memory 74b on (see 9 ). The memory includes RAM, ROM, flash memory and other semiconductor memory. In the storage room 74 are various programs and data for implementing the various functions of the grinder 1 saved. The various functions of the grinder 1 are made by running the various programs in memory 74b through the CPU 74a implemented. The through the control device 74 Various functions implemented are not limited to software processing, and some or all of the functions can also be implemented by hardware with a combination of logic circuits, analog circuits and the like.

On the battery attachment section 4 is one with the control device 74 connected connector 210 intended. The connector 210 is a connection circuit for electrically connecting the control device 74 and the communication adapter described below 202 , If the communication adapter 202 on the adapter mounting section 200 of the battery mounting section 4 is attached, therefore the connector 210 and the communication adapter 202 electrically connected to each other. The connector 210 is with an air intake 87 as a border on one side (front) opposite an air duct (duct through which the air intake opening 87 outside air taken to the exhaust air opening) is formed (see 3 ). That is, the communication adapter 202 is with the air intake opening 87 as a boundary with the air duct between the connection plates 70a . 70b to attach the battery 5a and the control device 74 to control the brushless motor 6 arranged.

The communication adapter 202 will now be described in more detail. The communication adapter 202 has a control circuit 212 , a connection terminal section 214 , an antenna 216 , a power supply circuit 218 , an adapter switch 220 and an LED 222 on (see 9 ). The connection terminal section 214 is an element for electrically connecting the communication adapter 202 and the control device 74 and in particular has several conductive contacts 214a on (see 7 ). If by attaching the communication adapter 202 on the adapter mounting section 200 the connection terminal section 214 of the communication adapter 202 with the connector 210 is connected, multiple contacts 214a of the connection terminal section 214 each with corresponding connections (not shown) on the connector 210 connected.

If from the control device 74 Operating information is output, this operating information on the connector 210 at the connection terminal section 214 of the communication adapter 202 fed and via the connection terminal section 214 into the control circuit 212 fed. If from the control device 74 Drive power of the communication adapter 202 via the connector 210 is output, this electrical drive current is on the communication adapter 202 via the connection terminal section 214 into the power supply circuit 218 fed.

If from the main body case 2 via the connection terminal section 214 electric drive current is fed, generates the power supply circuit 218 by means of this electrical drive current, internal electrical supply current for driving the various sections in the communication adapter 202 including the control circuit 212 and leads him to these sections. The different sections of the communication adapter 202 are powered by this internal electrical supply current.

The control circuit 212 of the communication adapter 202 has a microcomputer with a CPU 212a and a memory 212b on. The memory 212b includes RAM, ROM, flash memory and other semiconductor memory. In the storage room 212b are various programs and data for implementing the various functions of the communication adapter 202 saved. The different functions of the communication adapter 202 are made by running the various programs in memory 212b through the CPU 212a implemented. The through the control circuit 212 implemented various functions are not limited to software processing, and some or all functions can also be implemented by hardware with a combination of logic circuits, analog circuits and the like.

If from the main body case 2 via the connection terminal section 214 Operating information are fed in, sends the control circuit 212 this operating information including a coupling operation command by radio over the antenna 216 , The operational information is information that indicates that the switch 46 is on and the brushless motor 6 of the grinder 1 is in operation. The pairing operation command is a command that is a coupled operation of a dust collector 300 causes. The one from the communication adapter 202 of the grinder 1 Coupling operation command sent by radio is from a communication adapter 320 of the dust collector 300 received and in the dust collector 300 forwarded, causing the dust collector 300 is operated coupled.

If the switch 46 of the grinder 1 is turned off and the brushless motor 6 stops, is from the communication adapter 202 of the grinder 1 a coupling hold command sent by radio, which also causes the coupled operation of the dust collector 300 is stopped.

The dust collector 300 may be due to the operation of the grinder 1 expelled dust or chips through a hose 302 suck. Hence the grinder 1 and the dust collector 300 over the hose 302 interconnected (see 8th ). The communication adapter 320 is detachable on the dust collector 300 appropriate.

The dust collector 300 has a control device 310 , an engine 312 , a power supply circuit 314 , a connector 316 and a battery pack 318 with a battery 318a (e.g. 18 V DC). The battery pack 318 is just like the battery pack 5 of the grinder 1 designed and is detachable on the dust collector 300 mountable.

The control device 310 points as well as the control device 74 of the grinder 1 a microcomputer with a CPU and memory and the like and sets the various functions of the dust collector 300 around. If an actuation switch (not shown) of the dust collector 300 is turned on by a user, the control device drives 310 the engine 312 so that dust or chips can be sucked in. The connector 316 is a connection circuit for the electrical connection of the dust collector 300 and the communication adapter 320 and is just like the connector 316 of the grinder 1 designed.

The detachable on the dust collector 300 attachable communication adapter 320 has essentially the same configuration as the detachable on the grinder 1 attachable communication adapter 202 and performs the same function. That is, the detachable on the dust collector 300 attachable communication adapter 320 points like the detachable on the grinder 1 attachable communication adapter 202 a control circuit 322 , a connection terminal section 324 , an antenna 326 , an adapter switch 330 and an LED 332 on.

If the communication adapter 320 of the dust collector 300 from the communication adapter 202 of the grinder 1 receives a pairing operation command, it issues the pairing operation command through the connection terminal section 324 to the dust collector 300 out. When the pairing operation command from the communication adapter 320 via the connector 316 into the control device 310 of the dust collector 300 is fed, the motor 312 driven, and if subsequently by the communication adapter 320 via the connector 316 a coupling hold command is input, the motor 312 stopped. In this way the coupled operation of the grinder 1 and the dust collector 300 implemented.

At what time the engine can be set as required 312 is stopped when the pairing hold command from the communication adapter 320 is fed. For example, it can be stopped immediately after the coupling hold command has been input.

It can also be stopped after a specified waiting time after the coupling hold command has been fed in. That is, the engine 312 of the dust collector 300 can also last for a set time after the brushless motor stops 6 of the grinder 1 continue to be driven. The same effect can also be achieved with the following configuration. An embodiment is also possible, with the switch being switched off 46 on the grinder 1 not immediately a coupling hold command to stop the brushless motor 6 is sent, but the coupling hold command is sent after a predetermined time after the brushless motor stops.

It is also possible to turn on the switch 46 on the grinder 1 the coupling operation command to the dust collector 300 to send but the brushless motor 6 of the grinder 1 not to drive immediately, but the brushless motor 6 after a certain time after sending the pairing operation command. That said, it is also possible to use the engine 312 of the dust collector 300 power first and then the brushless motor 6 of the grinder 1 drive.

The configuration is such that the communication adapter 320 detachable on the dust collector 300 is attachable, but an embodiment is also possible, the communication adapter 320 or a circuit module corresponding to it is already housed in it.

For the coupled operation of the grinder 1 and the dust collector 300 need the communication adapter 202 of the grinder 1 and the communication adapter 320 of the dust collector 300 be brought into a state of one-to-one radio communication, that is, there is a coupling between the two communication adapters 202 . 320 required.

In order to carry out this coupling, is on the communication adapter 202 of the grinder 1 the adapter switch 220 provided and on the communication adapter 320 of the dust collector 300 also the adapter switch 330 intended. The coupling takes place specifically as follows. First, the communication adapter 320 by turning on the adapter switch 330 of the communication adapter 320 of the dust collector 300 put into a pairing wait state by a user. If the user then the adapter switch 220 of the communication adapter 202 of the grinder 1 switches on takes place between the communication adapters 202 . 320 a fixed data transmission for the coupling, with which the coupling of the two communication adapters 202 . 320 is completed.

After the coupling is complete, there is a data transmission between the two communication adapters 202 . 320 possible, and if from the communication adapter 202 of the grinder 1 If a coupling operation command is sent by radio, it is sent by the communication adapter 320 of the dust collector 300 is received, and based on the pairing operation command, the dust collector 300 operated coupled. The function of the communication adapter 202 . 320 is not limited to coupling and sending and receiving coupling operation commands, and various other information can be sent and received.

The communication adapter 202 of the grinder 1 is designed in such a way that it switches the LED according to the operating state 222 goes out, lights up or flashes. The luminous color when the LED is lit or flashing 222 can be switched between several colors. When the LED flashes 222 the time intervals and flashing patterns can be switched between several types.

If in this first embodiment, the communication adapter 202 on the adapter mounting section 200 of the grinder 1 is attached and the communication adapter 202 powered and thereby the communication adapter 202 the LED lights up 222 in a certain color. If the adapter switch during startup 220 switched on and a certain data transfer is started for coupling, the LED flashes 222 during data transmission, i.e. while the coupling is being carried out. When pairing is complete, the LED flashes 222 for example faster than during pairing. By checking the lighting status of the LED 222 the user can see the operating status of the communication adapter 202 determine. The same applies to the communication adapter 320 of the dust collector 300 , with the LED depending on the operating status 332 has gone out, lights up or flashes.

The lower section of the battery mounting section 4 is in relation to the corner tube section 10 bulging section of bulge 80 , and between the control device 74 and the bulge section 80 is a room 81 formed by the front and rear parts of the control device 74 stay in contact. The LED 222 is several on an upper end side of the circuit board 75 arranged and through a window 83 to see that in a sloping section 82 is provided, which is on the top of the battery mounting portion 4 essentially in the same direction as the inclination of the control device 74 is formed extending. In the window 83 are separating plates (not shown) for separating the individual LEDs 222 and a display section covering the front surface of the partition plates 86 provided, creating a display section 86 for the remaining battery charge, which is visible from the outside. The display section extends here 86 in the up-down and front-back direction, which increases the visibility of the display section 86 is increased ( 4 ).

Between the connection base 69 and the control device 74 in turn, are on the left and right side surfaces of the battery mounting portion 4 air intake openings 87 educated. The air intake openings 87 are in line with that of the connection base 69 and the inclined control device 74 formed space formed triangular and extend downwards towards the front. 96 denotes an air intake cover, each at the position of the air intake openings 87 on the side faces of the battery mounting portion 4 is appropriate.

In a triangular frame 97 made of rubber, which is slightly larger than the air intake opening 87 , is a metal grid 98 provided, and by one from the back surface of the frame 97 at the respective apex projecting locking pin (not shown) in a on the side surface of the Battery attachment portion 4 provided locking hole (not shown) is inserted, it is installed in a state in which the air intake openings 87 through the metal grille 98 are covered. At the front end portion of the locking pin, a flange-shaped widening portion (not shown) is formed which, when inserted into the locking hole, generates resistance in the direction of extraction. Through these air intake covers 96 there is a flow of air through the air intake openings 87 approved, while the entry of foreign bodies can be prevented.

The reference number 101 that on the side surface and the bottom surface of the main body case 2 appears, denotes anti-slip recess portions which are elongated in the circumferential direction with a certain distance in the front-rear direction, between the anti-slip recess portions 101 an anti-slip elevation section elongated in the front-rear direction 102 is formed. The anti-slip well 101 and riser sections 102 are symmetrically formed to the left and right and improve the hand grip that the main body case 2 grasps.

On the inner surface of the housing halves 2a . 2 B between the control device 74 and the air intake openings 87 are guide walls 88 educated. The guide walls 88 jump parallel to the bottom surface of the housing 78 the control device 74 but their protruding end portions are not in contact and between the guide walls 88 a gap is provided. Outside air through the left and right air intake 87 is therefore sucked in through the guide walls 88 to the center of the battery mounting section 4 passed and flows through the gap between the guide walls 88 on the bottom surface of the housing 78 along down.

As the left and right connection plate 70a . 70b with a flow section towards the housing 78 are in the middle, there is no short circuit between them. On the back surface of the individual guide walls 88 are several ribs running in the left-right direction 103 with even distances in the up-down direction formed by the air intake openings 87 Smooth the sucked-in air and direct it to the center. In the middle of the back surface of the case 78 are grid-like grooves 104 formed, and through these grooves 104 is the back surface of the case 78 formed with depressions and elevations, whereby the contact area with the outside air increases.

Brushless motor signal and power supply lines 6 run through the room 49 under the counter 46 to the control device 74 , and the power supply line (not shown) of the connector base 69 runs through the under the control device 74 formed space 81 to the control device 74 , In this way, the signal and power supply lines can be easily combined and laid. Because the switch 46 with button in front 47 facing forward, runs with the rear end of the switch 46 connected lead wire (not shown) not through the room 49 , but over the shortest distance back to the control device 74 and to the connection base 69 , Since the power supply line and the line wire are thus behind the switch 46 extend, it is not necessary to switch 46 to get around and the room 49 can be small and the corner tube section 10 formed narrow and is easier to grip in this way. It is also not necessary to bend the lead wire, which makes wiring easier. On the top surface of the battery attachment section 4 is a speed controller 106 grown. This statement corresponds to the statement from the claims that a speed controller for changing the speed of the motor is arranged on the side of the handle housing opposite the motor housing. With it, for example, the speed of the brushless motor 6 be changed.

If with the grinder 1 with the configuration of the corner tube section described above 10 seized and the switch button 60 is pushed forward, the sliding plate moves, as mentioned 57 forward, turns the change lever 51 and turns the switch 46 on. The brushless motor 6 is thus by the current from the battery pack 5 driven. That is, the microcomputer of the control device 74 obtains a rotation detection signal output from a rotation detection element of a sensor board (not shown) and the position of a permanent magnet of the rotor 12 displays, determines the rotational state of the rotor 12 , controls the on / off status of switching elements in accordance with the rotating state, allows current to the individual coils in succession 16 of the stator 11 flow and thus offset the rotor 12 in rotation. This turns the rotating shaft 6 and turns over the bevel gears 37 . 38 the spindle 7 , so with the cutting tool 43 Cutting or cutting work on stone or concrete are possible.

Because of the rotating rotor 12 the front stop at the front and rear 33 and the rear stop 34 are provided, the relocation of the permanent magnets 35 restricted in the longitudinal direction, which prevents them from coming out of the rotor core 27 escape. As a result, there is no risk of the permanent magnets falling out, resulting in a brushless motor 6 of high reliability is made possible. While using the grinder 1 the display section reports 86 by letting the LEDs light up the remaining charge of the battery, due to the inclined position of the control device 74 the display section 86 is more visible. Because even with this inclined position of the control device 74 the battery pack 5 orthogonal to the main body case 2 is attached, it is possible to use the grinder 1 with battery pack below 5 park upright (free-standing). There is also no increase in the length of the grinding device 1 ,

If together with the rotating shaft 26 the centrifugal fan 30 turns, is from the rear air intake vents 87 Outside air is sucked in and flows between the ribs 103 guided by the guide walls 88 from the middle section of the case 78 the control device 74 to the room 81 and under the control device 74 forth up into the main body case 2 , Then it flows across the room 49 between the stator 11 and the rotor 12 of the brushless motor 6 from the main body case 2 to the gearbox 3 and is through the exhaust vent 39 given to the outside.

Through this air flow, the control device 74 and the connector base 69 and also the brushless motor 6 cooled. Because especially at the control device 74 the air temporarily through the guide walls 88 is directed to the middle section and then to the bottom surface of the housing 78 When flowing along to the outer peripheral side, the contact area with the air increases, causing the control device 74 is effectively cooled. If the switch button 60 is pushed backwards, the sliding plate moves 57 backwards, turns the change lever 51 and turns the switch 46 off, causing the operation of the brushless motor 6 is stopped.

By according to the grinder described above 1 the control device 74 on the battery mounting section 4 in the main body case 2 provided and adjacent to that electrically with the battery pack 5 connected connection base 69 is arranged and between the control device 74 and the connection base 69 the air intake openings 87 are provided in addition to the control device 74 also the connection base 69 be advantageously cooled. In particular here are the brushless motor 6 , the control device 74 and the connector base 69 arranged on a straight line, the control device 74 is inclined with respect to the straight line, and at the end portion of the control device 74 on the side close to the connection base 69 is the display section 86 provided for the remaining battery charge, the display section 86 through that on the battery mounting section 4 provided windows 83 is visible, so the visibility of the display section 86 is excellent. Between the control device 74 and the air intake openings 87 are on the inner surface of the main body case 2 the guide walls 88 provided through the air intake openings 87 outside air drawn in to the middle side of the control device 74 conduct, thereby an even more effective cooling of the control device 74 he follows.

By according to the grinder 1 the above embodiment of the switch 46 in one position with the button 47 the switch is wired to the front 46 easily perform and it can be a more compact main body case 2 be achieved. In particular, here is in the main body case 2 which together with the switch button 60 Sliding plate moved in the front-rear direction 57 provided, and between the sliding plate 57 and the switch 46 a printing mechanism is provided which is when the slide plate is advanced 57 Press the key 47 of the switch 46 exercises and when pushing back the sliding plate 57 from the button 47 removed (change lever 51 ), so that even with the switch facing forward 46 is not necessary, the direction of operation of the switch button 60 (forward: on, back: off) to change, which maintains the ease of use. The printing mechanism can be constructed in a simple manner by moving the printing mechanism through the changeover lever 51 is formed, which is rotatable in the main body housing 2 is stored, and the arm portion 55 at the top end on the sliding plate 57 is locked while the cam section 54 at the bottom in front of the button 47 is positioned and when the sliding plate is pushed forward 57 rotates, causing the cam section 54 Press the key 47 exercises.

In the above embodiment, only the control device is inclined, but the connector base may also be inclined, and the battery pack may also be inclined with respect to the axis of the main body case. The air intake opening, which in this case is formed between the control device and the connection base, which are parallel to one another, is formed in the same length at the front and rear over the vertical extent. The air intake port is not limited to both the left and right sides of the battery attachment portion, but may be provided on only one of the two sides. In this case there is only one guide wall on one side. However, the guide wall and the ribs can be omitted. Also, the switch button may not be provided on the top surface of the main body case but on the side surface thereof. In this case, the changeover lever is pivoted to the side.

With regard to the cooling of the control device and the connection base, the invention is not restricted to a grinding device, and as long as it is a device with a battery as a power source and a controller, it can be applied to any other electric tool regardless of the orientation of the switch and the like. As for the invention with respect to the orientation of the switch, there is no limitation to a grinder, and as long as it is a switch device in which an operating member is turned on and off by sliding operation, it is also applied to an AC power tool Possible without a battery as a power supply source, for example a joint cutter, a nibbling machine, tin snips or another electrically powered tool. Even with the dust collector 300 need not be a device whose power source is the battery 318a the battery pack 318 , but it can also be a device that is supplied with 100 V mains power.

The grinder 1 The first embodiment of the present invention is configured as described above. According to this configuration, is on the battery attachment portion 4 the communication adapter 202 arranged to the dust collector 300 coupled to the operation of the brushless motor 6 to operate. By the communication adapter 202 in this way on the battery attachment portion 4 is arranged, the communication adapter 202 be arranged to save space when it is a small electrically powered tool such as a grinder. With this arrangement, there is also no obstruction at the point where the grinder 1 is held (corner tube section 10 ). This makes the grinder easy to use 1 not affected.

According to this configuration, the communication adapter 202 with the air intake opening 87 as a boundary on the side (front) opposite the air duct (duct in which outside air taken in through the air intake opening is conveyed to the exhaust air opening). Therefore, in the case where air flowing in the air duct contains dust and the like, the dust can be prevented from the communication adapter 202 reached. Therefore, the communication adapter may malfunction 202 be prevented.

According to this configuration, the cutting tool 43 a round disk-shaped grindstone or the like. Therefore, machining work and the like can be performed on a cutting material such as stone or concrete or the like.

According to this embodiment, the external device is the dust collector 300 , Therefore, when using the grinder 1 generated dust and chips over the hose 302 be sucked in directly. This prevents the dust and chips from flying around at the place of work. The quality of the work environment can thus be increased. That is, an improvement of the work environment can be achieved.

Second embodiment

Next, a second embodiment of the present invention will be described. In comparison to the grinding machine already described 1 of the first embodiment is in the grinder 101 of the second embodiment, the arrangement of the control device 74 and the adapter mounting section 200 changed. In the following description, elements that are identical or equivalent to the first exemplary embodiment are provided with the same reference symbols in the figures, and their re-description is omitted. The same applies to the third embodiment described later.

As in 11 shown is the grinder 101 essentially from the tubular main body housing 2 that in the front section the brushless motor 6 can accommodate the gearbox 3 , of which the front of the main body case 2 fixed spindle 7 protrudes downward, and that at the rear end of the main body case 2 formed battery mounting section 4 educated. On the battery attachment section 4 is the battery pack 5 with the battery 5a (For example, 18 V DC) attached as a power source.

How out 11 emerges is the control device 74 in the main body case 2 to the battery mounting section 4 there and with an opening 78a of their housing 78 facing downward in the height direction of the main body case 2 taken approximately in the middle. The position of the control device recorded in this way 74 is such that an axis L1 orthogonal to a surface through the opening 78a of the housing 78 is formed with respect to an axis L2 of the main body case 2 is orthogonal.

Because with such an alignment the surface on the housing 78 the control device 74 that needs cooling (area on the side of the grooves 104 ) along the air duct (duct in which through the air intake opening 87 outside air flows to the exhaust opening) is positioned, the cooling capacity for the control device 74 be increased (the control device 74 can be cooled sufficiently). From the front and rear holding sections 79 for holding the control device 74 is the rear holding section 79 essentially L-shaped educated. Through the air intake 87 Outside air taken in therefore becomes the surface on the side of the grooves 104 of the housing 78 the control device 74 passed, which is why the cooling capacity for the control device 74 can be further increased (the control device 74 can be cooled even better).

How out 11 is also the adapter attachment section 200 on which the communication adapter 202 is attached in the main body case 2 to the battery mounting section 4 upright on the side of the opening 78a of the housing 78 the control device 74 added. By being accommodated in this way, a structure results, with the communication adapter 202 and the air duct through the control device 74 be separated. Therefore, it gets through the air intake 87 Outside air not easily taken up with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased.

There is also a structure with the adapter attachment portion 200 through the rear holding section 79 from the air intake 87 is separated. Therefore, it gets through the air intake 87 Outside air not easily taken up with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased. The outer circumference of the connector 210 with which the communication adapter 202 is electrically connected by a rib 224 covered. Therefore, it gets through the air intake 87 Outside air not easily taken up with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased. This is the structure of the grinder 1 ,

The grinder 101 of the second embodiment of the present invention is configured as described above. According to this configuration, the same effect as the grinder 1 of the first embodiment can be obtained. Also is the adapter attachment section 200 on which the communication adapter 202 is attached in the main body case 2 to the battery mounting section 4 upright on the side of the opening 78a of the housing 78 the control device 74 added. By being accommodated in this way, a structure results, with the communication adapter 202 and the air duct through the control device 74 be separated. Therefore, it gets through the air intake 87 outside air absorbed due to the control device 74 not easily with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased.

According to this configuration, the outer circumference of the connector 210 with which the communication adapter 202 is electrically connected by the rib 224 covered. Therefore, it gets through the air intake 87 outside air absorbed due to the rib 224 not easily with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased.

Third embodiment

Next, a third embodiment of the present invention will be described. In comparison to the grinding machine already described 1 of the first embodiment is in the grinder 201 of the third embodiment, the arrangement of the adapter attachment portion 200 changed.

As in 12 shown is the grinder 201 essentially from the tubular main body housing 2 that in the front section the brushless motor 6 can accommodate the gearbox 3 , of which the front of the main body case 2 fixed spindle 7 protrudes downward, and that at the rear end of the main body case 2 formed battery mounting section 4 educated. On the battery attachment section 4 is the battery pack 5 with the battery 5a (For example, 18 V DC) attached as a power source.

How out 12 is the adapter mounting section 200 on which the communication adapter 202 is attached in the main body case 2 to the battery mounting section 4 towards the side of the opening 78a of the housing 78 the control device 74 in an inclined state (essentially parallel with respect on the inclined state of the control device 74 ) added. The outer circumference of the connector 210 with which the communication adapter 202 is electrically connected is through the rib 224 covered. Therefore, it gets through the air intake 87 Outside air not easily taken up with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased. This is the structure of the grinder 201 ,

The grinder 201 of the third embodiment of the present invention is configured as described above. According to this configuration, the same effect as the grinder 1 of the first embodiment can be obtained. The adapter mounting section 200 on which the communication adapter 202 is attached is in the main body case 2 to the battery mounting section 4 towards the side of the opening 78a of the housing 78 the control device 74 in the inclined state (substantially parallel with respect to the inclined state of the control device 74 ) added. The outer circumference of the connector 210 with which the communication adapter 202 is electrically connected is through the rib 224 covered. Therefore, it gets through the air intake 87 Outside air not easily taken up with the communication adapter 202 in contact, which is why the dust resistance of the communication adapter 202 can be increased.

The foregoing description is only of one embodiment of the present invention and is not intended to limit the present invention.

One embodiment has been described in the various exemplary embodiments, the adapter insertion opening 206 on the right surface of the battery mounting portion 4 is formed. However, there is no limitation to this and the adapter insertion opening 206 can also be on the left, top, or bottom surface of the battery mounting portion 4 be educated.

In the various exemplary embodiments, an embodiment has been described in which the external device is a dust collector 300 is. However, there is no limitation to this, and the external device can be various devices, such as those that can emit light or output sound.

In the various exemplary embodiments, an embodiment has been described in which the motor is a brushless motor 6 is. However, there is no limitation to this, and the motor can be different types of motor.

One embodiment has been described in the various exemplary embodiments, the communication adapter 202 of the grinder 1 from the battery pack 5 is powered. However, there is no limitation to this and the communication adapter 202 can also be powered by its own battery. The same applies to the communication adapter 320 of the dust collector 300 ,

The communication adapter 202 can also be between the brushless motor 6 and the power supply section (for example, the battery mounting section 4 ) be arranged. In this case, too, is the communication adapter 202 with the air intake opening 87 as a boundary on the side (front) opposite the air duct (duct in which outside air taken in through the air intake opening is conveyed to the exhaust air opening). Therefore, in the case where air flowing in the air duct contains dust and the like, the dust can be prevented from the communication adapter 202 reached. Therefore, the communication adapter may malfunction 202 be prevented.

The communication adapter 202 can also on the side opposite the round tube section 9 at the corner pipe section 10 be arranged. In this case, too, is the communication adapter 202 with the air intake opening 87 as a boundary on the side (front) opposite the air duct (duct in which outside air taken in through the air intake opening is conveyed to the exhaust air opening). Therefore, in the case where air flowing in the air duct contains dust and the like, the dust can be prevented from the communication adapter 202 reached. Therefore, the communication adapter may malfunction 202 be prevented.

In the various exemplary embodiments, an embodiment has been described in which a single dust collector 300 is present (see 8th ). However, there is no limitation in this regard and it is also a two dust collector version 300 possible (see 10 ). In this case, as in 10 shown, for example a dust box 340 provided when cutting or machining concrete 342 through the grinder 1 generated dust 344 picks up, and the dust box 340 and two dust collectors 300 are each via a hose 302 connected. Just like with a single dust collector 300 become the two dust collectors 300 coupled to the operation of the grinder 1 operated. This way you can use two dust collectors 300 the dust collection performance for the dust 344 increase.

A speed controller was used in the various exemplary embodiments 106 described. However, there is no restriction in this regard and it can also be a changeover regulator. In this case, the control mode can be used to control the brushless motor 6 can be switched.

In the second embodiment, the control device 74 in the main body case 2 also be recorded above the center in the vertical direction. In this case, as with the grinder 301 out 13 shown, the adapter mounting section 200 on which the communication adapter 202 is attached laterally on the side of the opening 78a of the housing 78 the control device 74 be included. Since this type of recording is also possible, the degree of freedom when arranging the control device increases 74 and the adapter mounting section 200 in the main body case 2 ,

In the third embodiment, the adapter attachment portion can 200 on which the communication adapter 202 is attached in the main body case 2 also to the side of the switch 46 be included. In this case there is a sharpener 401 as it is in 14 is shown. Since this type of receptacle is also possible, the degree of freedom when arranging the adapter attachment section increases 200 in the main body case 2 ,

In the various exemplary embodiments, the communication adapter 202 also outside the battery mounting section 4 and the main body case 2 (on the outside of the grinder 1 ) must be arranged (type with external attachment).

In the second embodiment, the connector 210 not through the rib 224 be covered. The same applies to the third embodiment.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• JP 2012071218 [0002]

Claims (10)

Electrically powered tool comprising: an engine, a holding portion that can hold a cutting tool that is driven by the motor and can cut a cutting material, and a battery attachment portion to which a battery for supplying electric power to the motor can be attached, wherein a communication adapter is disposed on the battery mounting portion to operate an external device coupled to the operation of the motor. Electrically powered tool after Claim 1 , wherein an air intake opening is formed on the battery attachment section, through which outside air can be received, wherein an exhaust air opening is formed on the holding section, through which outside air received through the air intake opening can be conveyed out via an air duct, and wherein the communication adapter with the air intake opening as a boundary with respect to the air duct is arranged between a connection plate for attaching the battery and a control device for controlling the motor. Electrically powered tool comprising: an engine, a holding portion that can hold a cutting tool that is driven by the motor and can cut a cutting material, and a power supply section for supplying electric power to the motor, wherein a communication adapter is disposed between the motor and the power supply section to operate an external device coupled to the operation of the motor. Electrically powered tool after Claim 3 , wherein an air intake opening is formed on the power supply section, through which outside air can be received, an exhaust air opening is formed on the holding section, through which outside air received through the air intake opening can be conveyed out via an air duct, and wherein the communication adapter with the air intake opening as a boundary with respect to the air duct is arranged. Electrically powered tool after Claim 3 , wherein the communication adapter is arranged on an opening side of a housing of the control device for controlling the motor. Electrically powered tool after Claim 5 , wherein an air intake opening is formed on the power supply section, through which outside air can be received, wherein an exhaust air opening is formed on the holding section, via which outside air received through the air intake opening can be conveyed out via an air duct, and wherein a connector that is electrically connected to the communication adapter , is covered by a rib such that it is separated from the air duct. Electrically powered tool comprising: an engine, a holding section that can hold a cutting tool that is driven by the motor and can cut a cutting material, a motor housing that houses the motor, and a handle housing that extends from the motor housing, wherein a communication adapter is arranged on the side of the handle housing opposite the motor housing in order to operate an external device coupled to the operation of the motor. Electrically powered tool after Claim 7 , an air intake opening is formed on the side of the handle housing opposite the motor housing, through which outside air can be taken in, an exhaust air opening is formed on the holding section, through which outside air taken up through the air intake opening can be conveyed out via an air duct, the communication adapter with the air intake opening is arranged as a boundary with respect to the air duct and a speed controller for changing the speed of the motor is arranged on the side of the handle housing with respect to the motor housing. Electrically powered tool according to one of the Claims 1 to 8th , wherein the cutting tool is a round disk-shaped grindstone. Electrically powered tool according to one of the Claims 1 to 9 , where the external device is a dust collector.

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