JP6613401B2 - Control adapter and power tool - Google Patents

Description

  The present invention relates to a control adapter that is detachably attached to a power tool and the power tool.

  The hot wire work is a work with a risk of electric shock. Therefore, various contrivances for improving the safety of work have been made, and one of them is a remote operation technique by wireless communication.

  For example, Patent Literature 1 (Japanese Patent Laid-Open No. 2017-225326) discloses a remote operation technique using a self-propelled power transmission line inspection device. In addition, Patent Document 2 (Japanese Patent Publication No. 2014-525840) or Patent Document 3 (Japanese Patent Application Laid-Open No. 2017-121681) is not attached to an electric tool, although it is not intended to remotely operate the electric tool. A technique for wirelessly communicating maintenance information such as remaining battery capacity from a communication adapter to an external device is disclosed.

JP 2017-225326 A Special table 2014-525840 gazette JP 2017-121681 A

  The electric tool exemplified in Patent Document 2 or Patent Document 3 is an electric tool designed to have a wireless communication function using a communication adapter. On the other hand, an electric tool that is driven by a detachable battery pack and does not have a wireless communication function is also widely used. However, regardless of the presence / absence of such a wireless communication function, none of the electric tools are operated by remote operation, and therefore it is desired to realize an electric tool having a remote operation function. Of these, it is particularly desirable for a power tool that does not have a wireless communication function to have a remote operation function without replacement or modification of parts, because costs can be reduced.

  The present invention has been made in view of the above circumstances, and is detachable so that a remote operation can be realized without replacing or refurbishing a power tool that is driven by a detachable battery pack and does not have a wireless communication function. An object is to provide a simple control adapter.

  The present invention solves the above-mentioned problem by means of solving as described below as an embodiment.

A control adapter according to the present invention is detachably mounted on an electric tool including a main body having a first connecting portion and a battery pack having a second connecting portion that is detachable from the first connecting portion. A control adapter that has the same outer shape in plan view as the battery pack, and is detachable from the first connection part and detachable from the second connection part. And the fourth connection portion are respectively provided on opposite surfaces, the third connection portion is engaged with the first connection portion, and the fourth connection portion is connected to the second connection portion. An energization circuit capable of energizing the main body from the battery pack in an engaged state, and a communication unit that performs one-to-one wireless communication with a predetermined controller, and wireless communication between the controller and the communication unit is turned on・ The ON / OFF state of the changeover switch to be turned OFF Display means for indicating to a requirement that is provided on the opposite side with respect to the plane in which the operating switch of the main body in a state of being mounted to the power tool is provided.

  According to this, a control adapter that can wirelessly communicate with the controller without replacing or refurbishing a power tool that does not have a wireless communication function is provided between the main body portion and the battery pack in the power tool. It can be put on as it is. At this time, since it is possible to energize the battery pack from the battery pack with the energization circuit, the electric power tool can be continuously driven by the battery pack with the control adapter sandwiched therebetween. Therefore, the tool can be remotely operated from the controller only by attaching the control adapter to the conventional electric tool.

  Moreover, it is preferable to provide a control unit that performs control to turn on and off the energization circuit according to a predetermined signal from the controller that is received via the communication unit. According to this, the power tool can be activated / stopped by remote control from the controller.

  Moreover, it is preferable that the said control part has a GPS circuit and memory, and performs control which returns the present or past position information according to the predetermined | prescribed signal from the said controller received via the said communication part. According to this, the position of the electric tool can be grasped, and when the tool is lost, it can be quickly found.

  Moreover, it is preferable that the said control part has a voltage detection circuit and performs control which returns energization information according to the predetermined signal from the said controller received via the said communication part. According to this, since it is possible to detect the energization state of an external object that comes into contact with or approaches, it is possible to grasp the live line state of the power transmission line, particularly in the live line work. In addition, with the GPS function, it is possible to record a live part and map a live state of the work place.

  Moreover, it is preferable that the said communication part is provided in the surface which does not contact | abut the said main-body part and the said battery pack in the state with which the said electric tool was mounted | worn. According to this, it can prevent that the electromagnetic wave transmitted / received between a communication part and a controller is inhibited by a main-body part or a battery pack.

  Moreover, it is preferable that the said electric tool is a compression tool, a crimping tool, a bending tool, a drilling tool, a cutting tool, or an electric wire peeling tool. According to this, it is possible to remotely operate and stop various tools used for hot-line work from the controller.

Next, an electric tool according to the present invention includes a main body, a battery pack that is detachably mounted on the main body, a control adapter that is detachably mounted between the main body and the battery pack, A power tool including a controller for remotely operating the control adapter, wherein the main body portion has a first connection portion, and the battery pack is detachable from the first connection portion. And the control adapter is formed in the same shape in plan view with respect to the battery pack, and is provided on surfaces opposite to each other, and can be engaged with and disengaged from the first connection portion. A fourth connecting portion that can be engaged with and disengaged from the second connecting portion, the first connecting portion and the third connecting portion are engaged, and the second connecting portion and the fourth connecting portion are engaged. The main body can be energized from the battery pack in a combined state It has an energization circuit and a communication unit that wirelessly communicates with a predetermined controller on a one-to-one basis, and shows an ON / OFF state of a changeover switch that turns ON / OFF wireless communication between the controller and the communication unit It is a requirement that the display means is provided on the surface opposite to the surface on which the operation switch of the main body portion is provided in a state where the display means is mounted on the power tool.

  According to this, the electric tool which can be remotely operated from the controller by wireless communication can be realized at a low cost with a simple configuration. Therefore, the safety of the hot work can be improved by applying to various tools used for the hot work.

  According to the present invention, a control adapter can be attached to an electric tool that does not have a wireless communication function while being sandwiched between the main body of the electric tool and the battery pack, and the control adapter is attached by an energization circuit. The electric tool can be driven by the battery pack in a sandwiched state. In other words, the control adapter can be mounted using the engagement part originally provided in the power tool, and the power tool can be operated by the battery pack after the mounting as well, so that the replacement or repair of parts is possible. A power tool having a wireless communication function can be realized by simply mounting the control adapter with the control adapter interposed therebetween. Moreover, since the control adapter can wirelessly communicate with the controller through the communication unit, an electric tool that can be remotely operated from the controller can be realized. Therefore, the control adapter according to the present invention can be widely applied to a power tool that does not have a wireless communication function as long as it has a detachable battery pack, and can be operated remotely without replacement or repair of parts. Can be realized at a low cost, and the safety of hot-line work can be further improved.

It is a basic composition of an electric tool, and is a perspective view showing a state before a battery pack is installed. It is a basic composition of an electric tool, and is a perspective view showing the state where a battery pack was installed. It is an example by which the control adapter which concerns on embodiment of this invention is mounted | worn with the electric tool of FIG. 1, Comprising: It is a perspective view from the upper side which shows the state before mounting | wearing. It is an example by which the control adapter which concerns on embodiment of this invention is mounted | worn with the electric tool of FIG. 1, Comprising: It is a perspective view from the lower part which shows the state before mounting | wearing. It is an example by which the control adapter which concerns on embodiment of this invention is mounted | worn with the electric tool of FIG. 1, Comprising: It is a perspective view which shows the state after mounting | wearing. It is the perspective view which expanded the control adapter of FIG. FIG. 4 is a front view showing an example of a controller that remotely operates the control adapter of FIG. 3. It is a block diagram which shows the example of the internal structure of a control adapter of FIG. 3, and a control mechanism. It is a block diagram which shows the internal structure of the control adapter of FIG. 3, and the modification of a control mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the basic configuration of the electric power tool 10 to which the control adapter 32 according to this embodiment is attached will be described.

  1 and 2 are perspective views showing a basic configuration of the electric power tool 10. FIG. 1 shows a state before the battery pack is attached, and FIG. 2 shows a state where the battery pack is attached. Yes. Hereinafter, the power tool 10 will be described using a cutting tool as an example.

  The electric tool 10 shown in FIG. 1 is comprised by the main-body part 12 which exhibits the function of the said tool, and the battery pack 14 in which a battery is accommodated. On the bottom surface of the main body portion 12, a first connection portion 16 having an engaging uneven portion is provided. On the other hand, on the upper surface of the battery pack 14, a second connection portion 18 having a convex concave portion for engagement is provided. Here, the concave and convex portions of the first connection portion 16 and the convex concave portions of the second connection portion 18 are configured in shapes corresponding to each other so as to be engageable with each other. Thereby, the battery pack 14 can be attached to and detached from the main body 12.

  Here, the main body 12 supports the operation unit 12a having a blade 20 that cuts an object to be cut (hereinafter simply referred to as “object”) and the electric tool 10 by hand during use. It consists of a grip 12b. Among them, an operation switch 24 for operating / stopping the operation unit 12a is provided in front of the operation unit 12a in the grip 12b. Accordingly, the operation switch 24 can be operated with a fingertip while the grip 12b is gripped by a hand.

  Next, a mechanism for mounting the control adapter 32 according to the embodiment of the present invention to the electric power tool 10 will be described. 3 to 5 are perspective views illustrating an example in which the control adapter 32 according to the embodiment of the present invention is attached to the electric power tool 10. 3 shows a state before the control adapter 32 is attached to the electric tool 10 from above, and FIG. 4 shows from below. FIG. 5 shows a state in which the control adapter 32 is attached to the electric tool 10.

  The control adapter 32 shown in FIG. 3 is detachably mounted with being sandwiched between the main body 12 and the battery pack 14 in the electric tool 10. That is, the control adapter 32 is provided with a third connection portion 34 on the top surface and a fourth connection portion 36 on the bottom surface that is opposite. Among these, the 3rd connection part 34 is provided in the 1st connection part 16 of the power tool 10 main-body part 12 bottom face so that attachment / detachment is possible, and the 4th connection part 36 is connected to the 2nd connection part 18 of the electric tool 10 battery pack 14 upper surface. It is provided so that it can be engaged and disengaged.

  More specifically, the third connection portion 34 has the same convexity as the second connection portion 18 on the upper surface of the battery pack 14 (including the case where it can be engaged) (FIG. 3), and the fourth connection portion 36 is It has the same uneven | corrugated | grooved part as the 1st connection part 16 of the main-body part 12 bottom face (including the case corresponding to engagement possible) (FIG. 4). Accordingly, the convex / concave portion of the third connecting portion 34 and the concave / convex portion of the first connecting portion 16 can be engaged with the concave / convex portion of the fourth connecting portion 36 and the convex / concave portion of the second connecting portion 18. As a result, the control adapter 32 is detachably mounted with being sandwiched between the main body 12 and the battery pack 14 in the electric power tool 10 (FIG. 5). As a result, the control adapter 32 can be mounted using the mechanism originally provided in the electric power tool 10 without replacing or refurbishing parts.

  Here, the degree of “same” with respect to the convex concave position of the second connecting portion 18 in the convex concave portion position of the third connecting portion 34 here means that the convex concave portion position of the second connecting portion 18 is engaged with the concave / convex portion of the first connecting portion 16. Therefore, it is sufficient to have the same effect that the effect of being able to be detachably attached to the main body portion 12 can also be achieved by the convex and concave positions of the third connection portion 34. Similarly, the degree of “same” with respect to the uneven portion of the first connecting portion 16 in the uneven portion of the fourth connecting portion 36 causes the uneven portion of the first connecting portion 16 to engage with the convex concave portion of the second connecting portion 18. Therefore, it is sufficient that the operational effect that the battery pack 14 can be detachably attached can be achieved by the uneven portion of the fourth connection portion 36. Therefore, it is not necessary to have completely the same configuration. For example, the number of terminals may be different (FIG. 3).

  Next, the control adapter 32 and the controller 38 for remotely operating the control adapter 32 according to the embodiment of the present invention will be described in detail. FIG. 6 is an enlarged perspective view of the control adapter 32 of FIG. FIG. 8 is a block diagram showing an example of the internal configuration of the control adapter 32 and a control mechanism. FIG. 7 is a front view showing an example of a controller 38 for remotely operating the control adapter 32.

  First, the control adapter 32 shown in FIG. 6 is formed in substantially the same shape as the battery pack 14. As a result, when the control adapter 32 is mounted between the main body 12 and the battery pack 14, the shape extending from the main body 12 to the battery pack 14 can have a sense of unity. As a result, the attached control adapter 32 does not get in the way of use and storage, and has excellent design. The control adapter 32 does not necessarily have the same thickness as the battery pack 14, but it is preferable that at least the planar shape is the same.

  Here, on the rear side of the side surface of the control adapter 32, there is provided a changeover switch 40 for switching wireless communication between the control adapter 32 and the controller 38 for remotely operating the control adapter 32 to ON / OFF. Thereby, the operation mechanism by directly operating the operation switch 24 of the power tool 10 main body 12 and the operation mechanism by remotely operating from the controller 38 can be selectively changed. These operating mechanisms will be described later.

  Also, immediately below the changeover switch 40, display means 42 is provided for displaying the ON / OFF state of the changeover switch 40, the communication state between the control adapter 32 and the controller 38, and the operation of the controller 38. Thereby, the selection state of the operating mechanism can be grasped. Further, since the display means 42 is provided on the rear side, the display means 42 can be confirmed while the grip 12b of the electric power tool 10 is gripped.

  The display means 42 in the present embodiment is a plurality of LEDs, and is provided with an adapter operation LED 42a, an adapter link LED 42b, and an adapter power LED 42c from the top. These can display the above information by a predetermined lighting method to be described later. However, the display means 42 is not limited to the LED, and for example, a configuration using a monitor or the like on which characters, figures, symbols, and the like are displayed is also conceivable.

  Next, in the control adapter 32 shown in FIG. 8, an energization circuit 54 that can energize the main body 12 from the battery pack 14 while being attached to the electric power tool 10 is provided. As a result, the electric power tool 10 can be operated by continuously operating the operation switch 24 of the main body 12 while the control adapter 32 is sandwiched between the main body 12 and the battery pack 14.

  Further, inside the control adapter 32, a control unit 56 that performs control to turn on and off the energization circuit 54 by a predetermined signal from the controller 38 and a communication unit 58 that performs wireless communication with the controller 38 are provided. Since the control adapter 32 is mounted between the main body 12 and the battery pack 14, the communication unit 58 is preferably provided on a surface that does not contact the main body 12 and the battery pack 14. Accordingly, it is possible to prevent radio waves transmitted and received between the communication unit 58 and the controller 38 from being obstructed by the main body unit 12 or the battery pack 14.

  Next, the controller 38 will be described. As shown in FIG. 7, the controller 38 according to the present embodiment is formed in a rectangular shape that is a general shape of a remote controller. A power switch 44 is provided on the right side surface. In addition, a plurality of operation buttons 46 (a first button 46a and a second button 46b) are provided at the front position. In the vicinity thereof, a display unit 48 that is an LED for displaying the ON / OFF state of the power switch 44, the communication state between the controller 38 and the control adapter 32 (communication unit 58), and the operation of the controller 38 is provided. . Thereby, the information can be grasped not only by the control adapter 32 (display means 42) but also by the controller 38. In addition, a controller and a battery housing (both not shown) are provided inside the controller 38. Reference numeral 50 denotes a battery remaining amount display section.

  Next, the control mechanism and operation of the control adapter 32 attached to the electric tool 10 will be described. First, when the changeover switch 40 shown in FIG. 6 is turned off, the control unit 56 does not operate and no control is performed. In this case, since the energization circuit 54 can energize the battery pack 14 to the main body 12, the power tool 10 can be operated by turning on the operation switch 24 of the main body 12.

  On the other hand, when the changeover switch 40 is turned on, control by the control unit 56 is started, and the adapter power supply LED 42c is turned on by the control unit 56. At this time, communication between the controller 38 and the communication unit 58 is impossible (non-link state). Subsequently, when the power switch 44 of the controller 38 is turned on, the communication unit 58 is activated, and the controller 38 and the communication unit 58 can communicate with each other (link state). At this time, the adapter link LED 42b and the display unit 48 are turned on (link state display) from blinking (link state display), and the energization circuit 54 is turned off by the control unit 56 (hereinafter referred to as “communication standby state”). Called). In the communication standby state, even if the operation switch 24 of the main body 12 is turned on, the electric tool 10 does not operate. In other words, the changeover switch 40 has a function as a power switch of the control adapter 32 and is remotely operated from the controller 38 by an operation mechanism by directly operating the operation switch 24 of the main body 12 of the electric tool 10 by the changeover switch 40. It is possible to selectively change the operation mechanism by operation.

  Here, when the electric tool 10 is remotely operated, first, the operation switch 24 is fixed in an ON state (a pressed state) using a fixing device (not shown) such as a binding band in a communication standby state. Subsequently, the electric tool 10 is positioned. In the cutting tool in the present embodiment, the blade 20 is placed on the object to be cut (fixing and positioning are preferably performed in an unlinked state for safety). Then, the power tool 10 is operated by remotely operating the controller 56 from the controller 38 to turn on the energization circuit 54. Thereby, the object can be cut.

  At this time, the control unit 56 turns on the energization circuit 54 only when a predetermined signal is received from the controller 38 via the communication unit 58. In the present embodiment, a predetermined radio wave is transmitted from the controller 38 by pressing the second button 46b while pressing the first button 46a, and holding the two operation buttons 46 for 2 seconds. Control by the control unit 56 is started by a signal from the communication unit 58 that has received the radio wave, and the energization circuit is turned on. Thereby, it is possible to prevent the electric tool 10 from being operated when the operation button 46 is pushed by mistake. During this operation, when the first button 46a is pressed, the adapter operation LED 42a is turned on. Next, when the second button 46b is pressed, the adapter operation LED 42a blinks. Thereby, the reception state of the control adapter 32 with respect to the operation by the controller 38 can be grasped. In addition, the operation method of the operation button 46 is an example, Comprising: It is not restricted to this.

  Further, the communication unit 58 can perform wireless communication with the predetermined controller 38 only one-on-one. As a result, accidents due to unexpected operations can be prevented. However, it is not always necessary to be able to communicate only one-on-one.

  Furthermore, in order to continue the operation of the electric tool 10 (continue the cutting operation by the blade 20), the state where the two operation buttons 46 of the controller 38 are pressed is maintained, and a predetermined signal is sent to the communication unit 58. It is necessary to keep sending. As a result, the operation of the electric tool 10 (blade 20) can be remotely operated from the controller 38 for starting, continuing, and stopping.

  Thereafter, when the operation of the power tool 10 ends (the workpiece is cut), the motor 21 of the main body 12 automatically stops. The control unit 56 that has detected the automatic stop of the motor 21 temporarily creates a state (non-link state) in which remote control by the controller 38 is impossible. Accordingly, the adapter link LED 42b and the display unit 48 are turned on (link state display) to blink (non-link state display), and thus the display functions as an answer back signal for displaying the completion of disconnection. The controller 56 that detects interruption of a predetermined signal by releasing the two operation buttons 46 of the controller 38 with this as a signal cancels (resets) the non-link state, enters the link state again, and enters the communication standby state. Return to.

  As described above, the control unit 56 controls the display unit 42 to display the communication state between the control adapter 32 and the controller 38 and the operation of the controller 38 in addition to the ON / OFF state of the changeover switch 40 described above. A control unit (not shown) provided in the controller 38 also performs control to display the information on the display unit 48. As a result, the power tool 10 can be operated while confirming the state of the power tool 10 and the control adapter 32 from the display means 42 and the display unit 48.

  As mentioned above, although embodiment of this invention was described, the control part 56 can be provided with the GPS circuit 60 or the voltage detection circuit 62 as a modification. FIG. 6 is a block diagram showing the internal configuration and control mechanism of the control adapter 32 in this modification.

  According to this example, the position information of the electric power tool 10 can be acquired by the GPS circuit 60. The control unit 56 receives a signal output by a predetermined operation from the controller 38 via the communication unit 58, and performs control to return current or past position information stored in the memory 64 according to the signal. . In this example, the display unit 48 of the controller 38 is configured to use a monitor or the like, or the controller 38 is connected to an external display device. Can be made. Thereby, the position of the electric power tool 10 can be grasped, and when the electric power tool 10 is lost, it can be quickly found.

  Further, in this example, it is possible to detect the energization state of an external object that contacts or approaches the electric power tool 10 by the voltage detection circuit 62. The control unit 56 performs control to receive a signal output by a predetermined operation from the controller 38 via the communication unit 58 and return energization information according to the signal. In this example, the energization information can be displayed on the display unit 48 of the controller 38 by turning on a predetermined LED corresponding to the detection result.

  Thereby, since the energization state of a target object can be grasped | ascertained, especially in a hot-line operation | work, the hot wire state of a power transmission line can be grasped | ascertained. In addition, with the GPS function, it is possible to record a live part and map a live state of the work place.

  In this example, if the purpose is to acquire only the current position information or energization information, the memory is not necessarily required. In this case, each information is directly returned to the controller from the GPS circuit or the energization circuit without going through the memory.

  As described above, according to the control adapter according to the present invention, the control adapter can be attached to the power tool that does not have the wireless communication function while being sandwiched between the main body portion of the power tool and the battery pack. In addition, the power tool can be driven by the battery pack in a state where the control adapter is sandwiched between the energization circuits. In other words, the control adapter can be mounted using the engagement part originally provided in the power tool, and the power tool can be operated by the battery pack after the mounting as well, so that the replacement or repair of parts is possible. A power tool having a wireless communication function can be realized by simply mounting the control adapter with the control adapter interposed therebetween. Moreover, since the control adapter can wirelessly communicate with the controller through the communication unit, an electric tool that can be remotely operated from the controller can be realized. Therefore, the control adapter according to the present invention can be widely applied to a power tool that does not have a wireless communication function as long as it has a detachable battery pack, and can be operated remotely without replacement or repair of parts. Can be realized at a low cost, and the safety of hot-line work can be further improved.

  In addition, the control adapter according to the present invention is provided with a changeover switch to selectively change the operation mechanism by directly operating the operation switch of the electric power tool main body and the operation mechanism by remotely operating from the controller. Can do. As a result, the power switch can be safely positioned by turning on the changeover switch and switched to the communication standby state, and then the tool can be operated remotely by performing a predetermined operation on the operation button. be able to.

  In the present embodiment, the cutting tool has been described as an example of the electric power tool. However, the control adapter according to the embodiment of the present invention is not limited to the cutting tool, and includes a compression tool, a crimping tool, a bending tool, and a drilling tool. Any power tool driven by a detachable battery pack, such as a tool or a wire peeling tool, can be widely applied. By applying the control adapter according to the present invention to various power tools used for hot-line work, it is possible to further improve work safety.

  Finally, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the present invention.

DESCRIPTION OF SYMBOLS 10 Electric tool 12 Main body part 14 Battery pack 16 1st connection part 18 2nd connection part 24 Operation switch 32 Control adapter 34 3rd connection part 36 4th connection part 38 Controller 40 Changeover switch 42 Display means 44 Power switch 46 Operation button 48 Display unit 54 Energizing circuit 56 Control unit 58 Communication unit

Claims (7)

A control adapter that is detachably attached to a power tool including a main body portion having a first connection portion and a battery pack having a second connection portion detachable from the first connection portion,
The outer shape of the plan view is the same for the battery pack,
A third connecting part that can be engaged with and disengaged from the first connecting part and a fourth connecting part that can be engaged and disengaged from the second connecting part are provided on surfaces opposite to each other;
An energizing circuit capable of energizing the main body from the battery pack in a state where the third connecting portion is engaged with the first connecting portion and the fourth connecting portion is engaged with the second connecting portion;
A communication unit that wirelessly communicates with a predetermined controller on a one-to-one basis,
The surface on which the operation switch of the main body is provided in a state in which the display means indicating the ON / OFF state of the changeover switch for turning ON / OFF the wireless communication between the controller and the communication unit is mounted on the power tool . The control adapter is provided on the opposite side to the control adapter. The control adapter according to claim 1, further comprising a control unit that performs control to turn on and off the energization circuit according to a predetermined signal from the controller received via the communication unit. The control unit includes a GPS circuit and a memory, and performs control to return current or past position information in response to a predetermined signal from the controller received via the communication unit. Item 3. The control adapter according to item 2. 3. The control unit according to claim 2, wherein the control unit includes a voltage detection circuit, and performs control to return energization information in response to a predetermined signal from the controller received via the communication unit. 3. The control adapter according to 3. 5. The control adapter according to claim 1, wherein the communication unit is provided on a surface that is not in contact with the main body unit and the battery pack in a state where the communication unit is attached to the electric power tool. . The control adapter according to any one of claims 1 to 5, wherein the electric tool is a compression tool, a crimping tool, a bending tool, a drilling tool, a cutting tool, or a wire peeling tool. A main body, a battery pack detachably mounted on the main body, a control adapter detachably mounted between the main body and the battery pack, and a controller for remotely operating the control adapter. A power tool comprising:
The main body has a first connection part,
The battery pack has a second connection part that can be engaged with and disengaged from the first connection part,
The control adapter is
The external shape of the plan view is the same for the battery pack,
A third connection portion that is provided on surfaces opposite to each other and that is detachable from the first connection portion; a fourth connection portion that is detachable from the second connection portion;
An energization circuit capable of energizing the main body from the battery pack in a state where the first connection portion and the third connection portion are engaged and the second connection portion and the fourth connection portion are engaged. When,
A communication unit that wirelessly communicates with a predetermined controller on a one-to-one basis,
The surface on which the operation switch of the main body is provided in a state in which the display means indicating the ON / OFF state of the changeover switch for turning ON / OFF the wireless communication between the controller and the communication unit is mounted on the power tool . It is provided in the surface on the opposite side with respect to, The electric tool characterized by the above-mentioned.

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